diff options
Diffstat (limited to 'mdk-stage1/ppp/pppd')
58 files changed, 0 insertions, 36639 deletions
diff --git a/mdk-stage1/ppp/pppd/.cvsignore b/mdk-stage1/ppp/pppd/.cvsignore deleted file mode 100644 index 476ef2253..000000000 --- a/mdk-stage1/ppp/pppd/.cvsignore +++ /dev/null @@ -1,2 +0,0 @@ -pppd -pppd-DIET diff --git a/mdk-stage1/ppp/pppd/Makefile b/mdk-stage1/ppp/pppd/Makefile deleted file mode 100644 index ad2bdae90..000000000 --- a/mdk-stage1/ppp/pppd/Makefile +++ /dev/null @@ -1,59 +0,0 @@ - #****************************************************************************** - # - # Guillaume Cottenceau (gc@mandrakesoft.com) - # - # Copyright 2000 MandrakeSoft - # - # This software may be freely redistributed under the terms of the GNU - # public license. - # - # You should have received a copy of the GNU General Public License - # along with this program; if not, write to the Free Software - # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - # - #***************************************************************************** - -top_dir = ../.. - -include $(top_dir)/Makefile.common - - -TARGETS = pppd - -ifeq (DIETLIBC, $(L)) -TARGETS += pppd-DIET -endif - -BINTARGET = ../pppd-bin - - -all: $(TARGETS) - -clean: - rm -f *.o *.a $(BINTARGET) pppd pppd-DIET - -FLAGS = -Wall -Werror -Os -fomit-frame-pointer -DDO_BSD_COMPRESS=0 -D_linux_=1 -DHAVE_MMAP -DNO_DRAND48 - -INCS = -I../include -I. - - -OBJS = main.o magic.o fsm.o lcp.o ipcp.o upap.o chap.o md5.o ccp.o auth.o options.o demand.o utils.o sys-linux.o ipxcp.o multilink.o tdb.o tty.o -OBJS-DIET = $(subst .o,-DIET.o,$(OBJS)) - - -pppd: $(OBJS) - gcc -static -o $@ $^ -lcrypt - $(STRIPCMD) $@ - cp -f $@ $(BINTARGET) - -pppd-DIET: $(OBJS-DIET) - gcc $(DIETLIBC_LDFLAGS_STAGE1) -o $@ $^ $(DIETLIBC_LIBC) - $(STRIPCMD) $@ - cp -f $@ $(BINTARGET) - -$(OBJS): %.o: %.c - gcc $(FLAGS) $(INCS) $(GLIBC_INCLUDES) -c $< -o $@ - -$(OBJS-DIET): %-DIET.o: %.c - gcc $(FLAGS) $(INCS) $(DIETLIBC_INCLUDES) -c $< -o $@ - diff --git a/mdk-stage1/ppp/pppd/Makefile.linux b/mdk-stage1/ppp/pppd/Makefile.linux deleted file mode 100644 index 47d6ba01e..000000000 --- a/mdk-stage1/ppp/pppd/Makefile.linux +++ /dev/null @@ -1,129 +0,0 @@ -# -# pppd makefile for Linux -# $Id$ -# - -# Default installation locations -BINDIR = $(DESTDIR)/usr/sbin -MANDIR = $(DESTDIR)/usr/man - -PPPDSRCS = main.c magic.c fsm.c lcp.c ipcp.c upap.c chap.c md5.c ccp.c \ - ipxcp.c auth.c options.c sys-linux.c md4.c chap_ms.c cbcp.c \ - demand.c utils.c multilink.c tdb.c tty.c -HEADERS = callout.h pathnames.h patchlevel.h chap.h md5.h chap_ms.h md4.h \ - ipxcp.h cbcp.h tdb.h -MANPAGES = pppd.8 -PPPDOBJS = main.o magic.o fsm.o lcp.o ipcp.o upap.o chap.o md5.o ccp.o \ - auth.o options.o demand.o utils.o sys-linux.o ipxcp.o multilink.o \ - tdb.o tty.o - -all: pppd - -# -# include dependancies if present and backup if as a header file -ifeq (.depend,$(wildcard .depend)) -include .depend -endif - -CC = gcc -# -COPTS = -Wall $(RPM_OPT_FLAGS) -LIBS = -lutil - -ifneq ($(wildcard /usr/lib/libcrypt.*),) -LIBS += -lcrypt -endif - -# Uncomment the next 2 lines to include support for Microsoft's -# MS-CHAP authentication protocol. -CHAPMS=y -USE_CRYPT=y -ifneq ($(wildcard /usr/lib/libcrypt.*),) -HAVE_CRYPT_H=y -endif - -# Uncomment the next line to include support for PPP packet filtering. -# This requires that the libpcap library and headers be installed -# and that the kernel driver support PPP packet filtering, which it -# doesn't yet. -#FILTER=y - -HAS_SHADOW=y -USE_PAM=y -#HAVE_INET6=y - -PLUGIN=y - -INCLUDE_DIRS= -I../include - -COMPILE_FLAGS= -D_linux_=1 -DHAVE_PATHS_H -DIPX_CHANGE -DHAVE_MULTILINK -DHAVE_MMAP - -CFLAGS= $(COPTS) $(COMPILE_FLAGS) $(INCLUDE_DIRS) - -ifdef CHAPMS -CFLAGS += -DCHAPMS=1 -ifndef USE_CRYPT -LIBS := -ldes $(LIBS) -else -CFLAGS += -DUSE_CRYPT=1 -ifneq ($(wildcard /usr/include/crypt.h),) -CFLAGS += -DHAVE_CRYPT_H=1 -endif -endif -PPPDOBJS += md4.o chap_ms.o -ifdef MSLANMAN -CFLAGS += -DMSLANMAN=1 -endif -endif - -ifdef HAS_SHADOW -CFLAGS += -DHAS_SHADOW -#LIBS := -lshadow $(LIBS) -endif - -# For "Pluggable Authentication Modules", see ftp.redhat.com:/pub/pam/. -ifdef USE_PAM -CFLAGS += -DUSE_PAM -LIBS := -lpam -ldl $(LIBS) -endif - -# Lock library binary for Linux is included in 'linux' subdirectory. -ifdef LOCKLIB -LIBS := -llock $(LIBS) -CFLAGS += -DLOCKLIB=1 -endif - -ifdef PLUGIN -CFLAGS += -DPLUGIN -LDFLAGS += -Wl,-E -LIBS += -ldl -endif - -ifdef FILTER -LIBS += -lpcap -CFLAGS += -DPPP_FILTER -I/usr/include/pcap -endif - -ifdef HAVE_INET6 - PPPDSRCS += ipv6cp.c eui64.c - HEADERS += ipv6cp.h eui64.h - PPPDOBJS += ipv6cp.o eui64.o - CFLAGS += -DINET6=1 -endif - - -INSTALL= install - -install: pppd - mkdir -p $(BINDIR) $(MANDIR) - $(INSTALL) -m 555 pppd $(BINDIR)/pppd - $(INSTALL) -c -m 444 pppd.8 $(MANDIR)/man8 - -pppd: $(PPPDOBJS) - $(CC) $(CFLAGS) $(LDFLAGS) -o pppd $(PPPDOBJS) $(LIBS) - -clean: - rm -f $(PPPDOBJS) pppd *~ #* core - -depend: - $(CPP) -M $(CFLAGS) $(PPPDSRCS) >.depend diff --git a/mdk-stage1/ppp/pppd/Makefile.linux.make b/mdk-stage1/ppp/pppd/Makefile.linux.make deleted file mode 100644 index d98a32562..000000000 --- a/mdk-stage1/ppp/pppd/Makefile.linux.make +++ /dev/null @@ -1,131 +0,0 @@ -# -# pppd makefile for Linux -# $Id$ -# - -# Default installation locations -BINDIR = /usr/sbin -MANDIR = /usr/man - -PPPDSRCS = main.c magic.c fsm.c lcp.c ipcp.c upap.c chap.c md5.c ccp.c \ - ipxcp.c auth.c options.c sys-linux.c md4.c chap_ms.c cbcp.c \ - demand.c utils.c multilink.c tdb.c tty.c -HEADERS = callout.h pathnames.h patchlevel.h chap.h md5.h chap_ms.h md4.h \ - ipxcp.h cbcp.h tdb.h -MANPAGES = pppd.8 -PPPDOBJS = main.o magic.o fsm.o lcp.o ipcp.o upap.o chap.o md5.o ccp.o \ - auth.o options.o demand.o utils.o sys-linux.o ipxcp.o multilink.o \ - tdb.o tty.o - -all: pppd - -# -# include dependancies if present and backup if as a header file -ifeq (.depend,$(wildcard .depend)) -include .depend -endif - -# CC = gcc -# -COPTS = -O2 -pipe -Wall -g -LIBS = - -ifneq ($(wildcard /usr/lib/libcrypt.*),) -LIBS += -lcrypt -endif - -# Uncomment the next 2 lines to include support for Microsoft's -# MS-CHAP authentication protocol. -CHAPMS=y -USE_CRYPT=y -ifneq ($(wildcard /usr/lib/libcrypt.*),) -HAVE_CRYPT_H=y -endif - -# Uncomment the next line to include support for PPP packet filtering. -# This requires that the libpcap library and headers be installed -# and that the kernel driver support PPP packet filtering, which it -# doesn't yet. -#FILTER=y - -HAS_SHADOW=y -#USE_PAM=y -#HAVE_INET6=y - -PLUGIN=y - -INCLUDE_DIRS= -I../include - -COMPILE_FLAGS= -D_linux_=1 -DHAVE_PATHS_H -DIPX_CHANGE -DHAVE_MULTILINK -DHAVE_MMAP - -CFLAGS= $(COPTS) $(COMPILE_FLAGS) $(INCLUDE_DIRS) - -ifdef CHAPMS -CFLAGS += -DCHAPMS=1 -ifndef USE_CRYPT -LIBS := -ldes $(LIBS) -else -CFLAGS += -DUSE_CRYPT=1 -ifneq ($(wildcard /usr/include/crypt.h),) -CFLAGS += -DHAVE_CRYPT_H=1 -endif -endif -PPPDOBJS += md4.o chap_ms.o -ifdef MSLANMAN -CFLAGS += -DMSLANMAN=1 -endif -endif - -ifdef HAS_SHADOW -CFLAGS += -DHAS_SHADOW -#LIBS := -lshadow $(LIBS) -endif - -# For "Pluggable Authentication Modules", see ftp.redhat.com:/pub/pam/. -ifdef USE_PAM -CFLAGS += -DUSE_PAM -LIBS := -lpam -ldl $(LIBS) -endif - -# Lock library binary for Linux is included in 'linux' subdirectory. -ifdef LOCKLIB -LIBS := -llock $(LIBS) -CFLAGS += -DLOCKLIB=1 -endif - -ifdef PLUGIN -CFLAGS += -DPLUGIN -LDFLAGS += -Wl,-E -LIBS += -ldl -endif - -ifdef FILTER -LIBS += -lpcap -CFLAGS += -DPPP_FILTER -I/usr/include/pcap -endif - -ifdef HAVE_INET6 - PPPDSRCS += ipv6cp.c eui64.c - HEADERS += ipv6cp.h eui64.h - PPPDOBJS += ipv6cp.o eui64.o - CFLAGS += -DINET6=1 -endif - - -INSTALL= install -o root - -install: pppd - mkdir -p $(BINDIR) $(MANDIR) - $(INSTALL) -s -c -m 555 pppd $(BINDIR)/pppd - if chgrp pppusers $(BINDIR)/pppd 2>/dev/null; then \ - chmod o-rx,u+s $(BINDIR)/pppd; fi - $(INSTALL) -c -m 444 pppd.8 $(MANDIR)/man8 - -pppd: $(PPPDOBJS) - $(CC) $(CFLAGS) $(LDFLAGS) -o pppd $(PPPDOBJS) $(LIBS) - -clean: - rm -f $(PPPDOBJS) pppd *~ #* core - -depend: - $(CPP) -M $(CFLAGS) $(PPPDSRCS) >.depend diff --git a/mdk-stage1/ppp/pppd/Makefile.linux.makeopt b/mdk-stage1/ppp/pppd/Makefile.linux.makeopt deleted file mode 100644 index 3094c941c..000000000 --- a/mdk-stage1/ppp/pppd/Makefile.linux.makeopt +++ /dev/null @@ -1,129 +0,0 @@ -# -# pppd makefile for Linux -# $Id$ -# - -# Default installation locations -BINDIR = $(DESTDIR)/usr/sbin -MANDIR = $(DESTDIR)/usr/man - -PPPDSRCS = main.c magic.c fsm.c lcp.c ipcp.c upap.c chap.c md5.c ccp.c \ - ipxcp.c auth.c options.c sys-linux.c md4.c chap_ms.c cbcp.c \ - demand.c utils.c multilink.c tdb.c tty.c -HEADERS = callout.h pathnames.h patchlevel.h chap.h md5.h chap_ms.h md4.h \ - ipxcp.h cbcp.h tdb.h -MANPAGES = pppd.8 -PPPDOBJS = main.o magic.o fsm.o lcp.o ipcp.o upap.o chap.o md5.o ccp.o \ - auth.o options.o demand.o utils.o sys-linux.o ipxcp.o multilink.o \ - tdb.o tty.o - -all: pppd - -# -# include dependancies if present and backup if as a header file -ifeq (.depend,$(wildcard .depend)) -include .depend -endif - -CC = gcc -# -COPTS = -O2 -pipe -Wall -g -LIBS = -lutil - -ifneq ($(wildcard /usr/lib/libcrypt.*),) -LIBS += -lcrypt -endif - -# Uncomment the next 2 lines to include support for Microsoft's -# MS-CHAP authentication protocol. -CHAPMS=y -USE_CRYPT=y -ifneq ($(wildcard /usr/lib/libcrypt.*),) -HAVE_CRYPT_H=y -endif - -# Uncomment the next line to include support for PPP packet filtering. -# This requires that the libpcap library and headers be installed -# and that the kernel driver support PPP packet filtering, which it -# doesn't yet. -#FILTER=y - -HAS_SHADOW=y -USE_PAM=y -#HAVE_INET6=y - -PLUGIN=y - -INCLUDE_DIRS= -I../include - -COMPILE_FLAGS= -D_linux_=1 -DHAVE_PATHS_H -DIPX_CHANGE -DHAVE_MULTILINK -DHAVE_MMAP - -CFLAGS= $(COPTS) $(COMPILE_FLAGS) $(INCLUDE_DIRS) - -ifdef CHAPMS -CFLAGS += -DCHAPMS=1 -ifndef USE_CRYPT -LIBS := -ldes $(LIBS) -else -CFLAGS += -DUSE_CRYPT=1 -ifneq ($(wildcard /usr/include/crypt.h),) -CFLAGS += -DHAVE_CRYPT_H=1 -endif -endif -PPPDOBJS += md4.o chap_ms.o -ifdef MSLANMAN -CFLAGS += -DMSLANMAN=1 -endif -endif - -ifdef HAS_SHADOW -CFLAGS += -DHAS_SHADOW -#LIBS := -lshadow $(LIBS) -endif - -# For "Pluggable Authentication Modules", see ftp.redhat.com:/pub/pam/. -ifdef USE_PAM -CFLAGS += -DUSE_PAM -LIBS := -lpam -ldl $(LIBS) -endif - -# Lock library binary for Linux is included in 'linux' subdirectory. -ifdef LOCKLIB -LIBS := -llock $(LIBS) -CFLAGS += -DLOCKLIB=1 -endif - -ifdef PLUGIN -CFLAGS += -DPLUGIN -LDFLAGS += -Wl,-E -LIBS += -ldl -endif - -ifdef FILTER -LIBS += -lpcap -CFLAGS += -DPPP_FILTER -I/usr/include/pcap -endif - -ifdef HAVE_INET6 - PPPDSRCS += ipv6cp.c eui64.c - HEADERS += ipv6cp.h eui64.h - PPPDOBJS += ipv6cp.o eui64.o - CFLAGS += -DINET6=1 -endif - - -INSTALL= install - -install: pppd - mkdir -p $(BINDIR) $(MANDIR) - $(INSTALL) -m 555 pppd $(BINDIR)/pppd - $(INSTALL) -c -m 444 pppd.8 $(MANDIR)/man8 - -pppd: $(PPPDOBJS) - $(CC) $(CFLAGS) $(LDFLAGS) -o pppd $(PPPDOBJS) $(LIBS) - -clean: - rm -f $(PPPDOBJS) pppd *~ #* core - -depend: - $(CPP) -M $(CFLAGS) $(PPPDSRCS) >.depend diff --git a/mdk-stage1/ppp/pppd/Makefile.sol2 b/mdk-stage1/ppp/pppd/Makefile.sol2 deleted file mode 100644 index dfdcddd97..000000000 --- a/mdk-stage1/ppp/pppd/Makefile.sol2 +++ /dev/null @@ -1,48 +0,0 @@ -# -# Makefile for pppd under Solaris 2. -# $Id$ -# - -include ../solaris/Makedefs - -COPTS += -xO2 -xspace -W0,-Lt -CFLAGS = -I../include -DSVR4 -DSOL2 $(COPTS) -LIBS = -lsocket -lnsl - -OBJS = main.o magic.o fsm.o lcp.o ipcp.o upap.o chap.o md5.o tty.o \ - ccp.o auth.o options.o demand.o utils.o sys-solaris.o tdb.o - -# -# uncomment the following to enable plugins -# -CFLAGS += -DPLUGIN -LIBS += -ldl - -# -# Solaris 8 and above accomodates /var/run, so uncomment the -# following to place pppd process IDs on that location -# -#CFLAGS += -D_PATH_VARRUN='"/var/run/"' - -# -# uncomment the following to enable IPv6 -# -# Solaris 8 and on includes support for IPv6 -# -#CFLAGS += -DINET6 -#OBJS += ipv6cp.o eui64.o - -# -# Make targets -# -all: pppd - -pppd: $(OBJS) - $(CC) -o pppd $(OBJS) $(LIBS) - -install: - $(INSTALL) -f $(BINDIR) -m 4755 -u root pppd - $(INSTALL) -f $(MANDIR)/man8 -m 444 pppd.8 - -clean: - rm -f $(OBJS) pppd *~ core y.tab.c y.tab.h diff --git a/mdk-stage1/ppp/pppd/Makefile.sunos4 b/mdk-stage1/ppp/pppd/Makefile.sunos4 deleted file mode 100644 index 694ac341f..000000000 --- a/mdk-stage1/ppp/pppd/Makefile.sunos4 +++ /dev/null @@ -1,26 +0,0 @@ -# -# Makefile for pppd under SunOS 4. -# $Id$ -# - -include ../sunos4/Makedefs - -LIBS = - -CFLAGS = $(COPTS) -I../include -DSUNOS4 -DGIDSET_TYPE=int \ - -DLOCK_DIR=\"/usr/spool/locks\" - -all: pppd - -OBJS = main.o magic.o fsm.o lcp.o ipcp.o upap.o chap.o md5.o ccp.o \ - auth.o options.o demand.o utils.o sys-sunos4.o tty.o - -pppd: $(OBJS) - $(CC) -o pppd $(OBJS) $(LIBS) - -install: - $(INSTALL) -c -m 4555 pppd $(BINDIR)/pppd - $(INSTALL) -c -m 444 pppd.8 $(MANDIR)/man8/pppd.8 - -clean: - rm -f $(OBJS) pppd *~ core diff --git a/mdk-stage1/ppp/pppd/auth.c b/mdk-stage1/ppp/pppd/auth.c deleted file mode 100644 index 5f95a2982..000000000 --- a/mdk-stage1/ppp/pppd/auth.c +++ /dev/null @@ -1,1939 +0,0 @@ -/* - * auth.c - PPP authentication and phase control. - * - * Copyright (c) 1993 The Australian National University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the Australian National University. The name of the University - * may not be used to endorse or promote products derived from this - * software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -#include <stdio.h> -#include <stddef.h> -#include <stdlib.h> -#include <unistd.h> -#include <pwd.h> -#include <grp.h> -#include <string.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/socket.h> -#include <utmp.h> -#include <fcntl.h> -#if defined(_PATH_LASTLOG) && defined(_linux_) -#include <lastlog.h> -#endif - -#include <netdb.h> -#include <netinet/in.h> -#include <arpa/inet.h> - -#ifdef USE_PAM -#include <security/pam_appl.h> -#endif - -#ifdef HAS_SHADOW -#include <shadow.h> -#ifndef PW_PPP -#define PW_PPP PW_LOGIN -#endif -#endif - -#include "pppd.h" -#include "fsm.h" -#include "lcp.h" -#include "ipcp.h" -#include "upap.h" -#include "chap.h" -#ifdef CBCP_SUPPORT -#include "cbcp.h" -#endif -#include "pathnames.h" - -#include <time.h> - -static const char rcsid[] = RCSID; - -/* Bits in scan_authfile return value */ -#define NONWILD_SERVER 1 -#define NONWILD_CLIENT 2 - -#define ISWILD(word) (word[0] == '*' && word[1] == 0) - -/* The name by which the peer authenticated itself to us. */ -char peer_authname[MAXNAMELEN]; - -/* Records which authentication operations haven't completed yet. */ -static int auth_pending[NUM_PPP]; - -/* Set if we have successfully called plogin() */ -static int logged_in; - -/* List of addresses which the peer may use. */ -static struct permitted_ip *addresses[NUM_PPP]; - -/* Wordlist giving addresses which the peer may use - without authenticating itself. */ -static struct wordlist *noauth_addrs; - -/* Extra options to apply, from the secrets file entry for the peer. */ -static struct wordlist *extra_options; - -/* Number of network protocols which we have opened. */ -static int num_np_open; - -/* Number of network protocols which have come up. */ -static int num_np_up; - -/* Set if we got the contents of passwd[] from the pap-secrets file. */ -static int passwd_from_file; - -/* Set if we require authentication only because we have a default route. */ -static bool default_auth; - -/* Hook to enable a plugin to control the idle time limit */ -int (*idle_time_hook) __P((struct ppp_idle *)) = NULL; - -/* Hook for a plugin to say whether we can possibly authenticate any peer */ -int (*pap_check_hook) __P((void)) = NULL; - -/* Hook for a plugin to check the PAP user and password */ -int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp, - struct wordlist **paddrs, - struct wordlist **popts)) = NULL; - -/* Hook for a plugin to know about the PAP user logout */ -void (*pap_logout_hook) __P((void)) = NULL; - -/* Hook for a plugin to get the PAP password for authenticating us */ -int (*pap_passwd_hook) __P((char *user, char *passwd)) = NULL; - -/* - * This is used to ensure that we don't start an auth-up/down - * script while one is already running. - */ -enum script_state { - s_down, - s_up -}; - -static enum script_state auth_state = s_down; -static enum script_state auth_script_state = s_down; -static pid_t auth_script_pid = 0; - -static int used_login; /* peer authenticated against login database */ - -/* - * Option variables. - */ -bool uselogin = 0; /* Use /etc/passwd for checking PAP */ -bool cryptpap = 0; /* Passwords in pap-secrets are encrypted */ -bool refuse_pap = 0; /* Don't wanna auth. ourselves with PAP */ -bool refuse_chap = 0; /* Don't wanna auth. ourselves with CHAP */ -bool usehostname = 0; /* Use hostname for our_name */ -bool auth_required = 0; /* Always require authentication from peer */ -bool allow_any_ip = 0; /* Allow peer to use any IP address */ -bool explicit_remote = 0; /* User specified explicit remote name */ -char remote_name[MAXNAMELEN]; /* Peer's name for authentication */ - -static char *uafname; /* name of most recent +ua file */ - -/* Bits in auth_pending[] */ -#define PAP_WITHPEER 1 -#define PAP_PEER 2 -#define CHAP_WITHPEER 4 -#define CHAP_PEER 8 - -extern char *crypt __P((const char *, const char *)); - -/* Prototypes for procedures local to this file. */ - -static void network_phase __P((int)); -static void check_idle __P((void *)); -static void connect_time_expired __P((void *)); -static int plogin __P((char *, char *, char **)); -static void plogout __P((void)); -static int null_login __P((int)); -static int get_pap_passwd __P((char *)); -static int have_pap_secret __P((int *)); -static int have_chap_secret __P((char *, char *, int, int *)); -static int ip_addr_check __P((u_int32_t, struct permitted_ip *)); -static int scan_authfile __P((FILE *, char *, char *, char *, - struct wordlist **, struct wordlist **, - char *)); -static void free_wordlist __P((struct wordlist *)); -static void auth_script __P((char *)); -static void auth_script_done __P((void *)); -static void set_allowed_addrs __P((int, struct wordlist *, struct wordlist *)); -static int some_ip_ok __P((struct wordlist *)); -static int setupapfile __P((char **)); -static int privgroup __P((char **)); -static int set_noauth_addr __P((char **)); -static void check_access __P((FILE *, char *)); -static int wordlist_count __P((struct wordlist *)); - -/* - * Authentication-related options. - */ -option_t auth_options[] = { - { "auth", o_bool, &auth_required, - "Require authentication from peer", OPT_PRIO | 1 }, - { "noauth", o_bool, &auth_required, - "Don't require peer to authenticate", OPT_PRIOSUB | OPT_PRIV, - &allow_any_ip }, - { "require-pap", o_bool, &lcp_wantoptions[0].neg_upap, - "Require PAP authentication from peer", - OPT_PRIOSUB | 1, &auth_required }, - { "+pap", o_bool, &lcp_wantoptions[0].neg_upap, - "Require PAP authentication from peer", - OPT_ALIAS | OPT_PRIOSUB | 1, &auth_required }, - { "require-chap", o_bool, &lcp_wantoptions[0].neg_chap, - "Require CHAP authentication from peer", - OPT_PRIOSUB | 1, &auth_required }, - { "+chap", o_bool, &lcp_wantoptions[0].neg_chap, - "Require CHAP authentication from peer", - OPT_ALIAS | OPT_PRIOSUB | 1, &auth_required }, - - { "refuse-pap", o_bool, &refuse_pap, - "Don't agree to auth to peer with PAP", 1 }, - { "-pap", o_bool, &refuse_pap, - "Don't allow PAP authentication with peer", OPT_ALIAS | 1 }, - - { "refuse-chap", o_bool, &refuse_chap, - "Don't agree to auth to peer with CHAP", 1 }, - { "-chap", o_bool, &refuse_chap, - "Don't allow CHAP authentication with peer", OPT_ALIAS | 1 }, - - { "name", o_string, our_name, - "Set local name for authentication", - OPT_PRIO | OPT_PRIV | OPT_STATIC, NULL, MAXNAMELEN }, - - { "+ua", o_special, (void *)setupapfile, - "Get PAP user and password from file", - OPT_PRIO | OPT_A2STRVAL, &uafname }, - - { "user", o_string, user, - "Set name for auth with peer", OPT_PRIO | OPT_STATIC, NULL, MAXNAMELEN }, - - { "password", o_string, passwd, - "Password for authenticating us to the peer", - OPT_PRIO | OPT_STATIC | OPT_HIDE, NULL, MAXSECRETLEN }, - - { "usehostname", o_bool, &usehostname, - "Must use hostname for authentication", 1 }, - - { "remotename", o_string, remote_name, - "Set remote name for authentication", OPT_PRIO | OPT_STATIC, - &explicit_remote, MAXNAMELEN }, - - { "login", o_bool, &uselogin, - "Use system password database for PAP", 1 }, - - { "papcrypt", o_bool, &cryptpap, - "PAP passwords are encrypted", 1 }, - - { "privgroup", o_special, (void *)privgroup, - "Allow group members to use privileged options", OPT_PRIV | OPT_A2LIST }, - - { "allow-ip", o_special, (void *)set_noauth_addr, - "Set IP address(es) which can be used without authentication", - OPT_PRIV | OPT_A2LIST }, - - { NULL } -}; - -/* - * setupapfile - specifies UPAP info for authenticating with peer. - */ -static int -setupapfile(argv) - char **argv; -{ - FILE *ufile; - int l; - char u[MAXNAMELEN], p[MAXSECRETLEN]; - char *fname; - - lcp_allowoptions[0].neg_upap = 1; - - /* open user info file */ - fname = strdup(*argv); - if (fname == NULL) - novm("+ua file name"); - seteuid(getuid()); - ufile = fopen(fname, "r"); - seteuid(0); - if (ufile == NULL) { - option_error("unable to open user login data file %s", fname); - return 0; - } - check_access(ufile, fname); - uafname = fname; - - /* get username */ - if (fgets(u, MAXNAMELEN - 1, ufile) == NULL - || fgets(p, MAXSECRETLEN - 1, ufile) == NULL){ - option_error("unable to read user login data file %s", fname); - return 0; - } - fclose(ufile); - - /* get rid of newlines */ - l = strlen(u); - if (l > 0 && u[l-1] == '\n') - u[l-1] = 0; - l = strlen(p); - if (l > 0 && p[l-1] == '\n') - p[l-1] = 0; - - if (override_value("user", option_priority, fname)) - strlcpy(user, u, sizeof(user)); - if (override_value("passwd", option_priority, fname)) - strlcpy(passwd, p, sizeof(passwd)); - - return (1); -} - - -/* - * privgroup - allow members of the group to have privileged access. - */ -static int -privgroup(argv) - char **argv; -{ - struct group *g; - int i; - - g = getgrnam(*argv); - if (g == 0) { - option_error("group %s is unknown", *argv); - return 0; - } - for (i = 0; i < ngroups; ++i) { - if (groups[i] == g->gr_gid) { - privileged = 1; - break; - } - } - return 1; -} - - -/* - * set_noauth_addr - set address(es) that can be used without authentication. - * Equivalent to specifying an entry like `"" * "" addr' in pap-secrets. - */ -static int -set_noauth_addr(argv) - char **argv; -{ - char *addr = *argv; - int l = strlen(addr) + 1; - struct wordlist *wp; - - wp = (struct wordlist *) malloc(sizeof(struct wordlist) + l); - if (wp == NULL) - novm("allow-ip argument"); - wp->word = (char *) (wp + 1); - wp->next = noauth_addrs; - BCOPY(addr, wp->word, l); - noauth_addrs = wp; - return 1; -} - - -/* - * An Open on LCP has requested a change from Dead to Establish phase. - * Do what's necessary to bring the physical layer up. - */ -void -link_required(unit) - int unit; -{ -} - -/* - * LCP has terminated the link; go to the Dead phase and take the - * physical layer down. - */ -void -link_terminated(unit) - int unit; -{ - if (phase == PHASE_DEAD) - return; - if (pap_logout_hook) { - pap_logout_hook(); - } else { - if (logged_in) - plogout(); - } - new_phase(PHASE_DEAD); - notice("Connection terminated."); -} - -/* - * LCP has gone down; it will either die or try to re-establish. - */ -void -link_down(unit) - int unit; -{ - int i; - struct protent *protp; - - auth_state = s_down; - if (auth_script_state == s_up && auth_script_pid == 0) { - update_link_stats(unit); - auth_script_state = s_down; - auth_script(_PATH_AUTHDOWN); - } - for (i = 0; (protp = protocols[i]) != NULL; ++i) { - if (!protp->enabled_flag) - continue; - if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) - (*protp->lowerdown)(unit); - if (protp->protocol < 0xC000 && protp->close != NULL) - (*protp->close)(unit, "LCP down"); - } - num_np_open = 0; - num_np_up = 0; - if (phase != PHASE_DEAD) - new_phase(PHASE_TERMINATE); -} - -/* - * The link is established. - * Proceed to the Dead, Authenticate or Network phase as appropriate. - */ -void -link_established(unit) - int unit; -{ - int auth; - lcp_options *wo = &lcp_wantoptions[unit]; - lcp_options *go = &lcp_gotoptions[unit]; - lcp_options *ho = &lcp_hisoptions[unit]; - int i; - struct protent *protp; - - /* - * Tell higher-level protocols that LCP is up. - */ - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (protp->protocol != PPP_LCP && protp->enabled_flag - && protp->lowerup != NULL) - (*protp->lowerup)(unit); - - if (auth_required && !(go->neg_chap || go->neg_upap)) { - /* - * We wanted the peer to authenticate itself, and it refused: - * if we have some address(es) it can use without auth, fine, - * otherwise treat it as though it authenticated with PAP using - * a username * of "" and a password of "". If that's not OK, - * boot it out. - */ - if (noauth_addrs != NULL) { - set_allowed_addrs(unit, NULL, NULL); - } else if (!wo->neg_upap || uselogin || !null_login(unit)) { - warn("peer refused to authenticate: terminating link"); - lcp_close(unit, "peer refused to authenticate"); - status = EXIT_PEER_AUTH_FAILED; - return; - } - } - - new_phase(PHASE_AUTHENTICATE); - used_login = 0; - auth = 0; - if (go->neg_chap) { - ChapAuthPeer(unit, our_name, go->chap_mdtype); - auth |= CHAP_PEER; - } else if (go->neg_upap) { - upap_authpeer(unit); - auth |= PAP_PEER; - } - if (ho->neg_chap) { - ChapAuthWithPeer(unit, user, ho->chap_mdtype); - auth |= CHAP_WITHPEER; - } else if (ho->neg_upap) { - if (passwd[0] == 0) { - passwd_from_file = 1; - if (!get_pap_passwd(passwd)) - error("No secret found for PAP login"); - } - upap_authwithpeer(unit, user, passwd); - auth |= PAP_WITHPEER; - } - auth_pending[unit] = auth; - - if (!auth) - network_phase(unit); -} - -/* - * Proceed to the network phase. - */ -static void -network_phase(unit) - int unit; -{ - lcp_options *go = &lcp_gotoptions[unit]; - - /* - * If the peer had to authenticate, run the auth-up script now. - */ - if (go->neg_chap || go->neg_upap) { - auth_state = s_up; - if (auth_script_state == s_down && auth_script_pid == 0) { - auth_script_state = s_up; - auth_script(_PATH_AUTHUP); - } - } - -#ifdef CBCP_SUPPORT - /* - * If we negotiated callback, do it now. - */ - if (go->neg_cbcp) { - new_phase(PHASE_CALLBACK); - (*cbcp_protent.open)(unit); - return; - } -#endif - - /* - * Process extra options from the secrets file - */ - if (extra_options) { - options_from_list(extra_options, 1); - free_wordlist(extra_options); - extra_options = 0; - } - start_networks(); -} - -void -start_networks() -{ - int i; - struct protent *protp; - - new_phase(PHASE_NETWORK); - -#ifdef HAVE_MULTILINK - if (multilink) { - if (mp_join_bundle()) { - if (updetach && !nodetach) - detach(); - return; - } - } -#endif /* HAVE_MULTILINK */ - -#ifdef PPP_FILTER - if (!demand) - set_filters(&pass_filter, &active_filter); -#endif - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (protp->protocol < 0xC000 && protp->enabled_flag - && protp->open != NULL) { - (*protp->open)(0); - if (protp->protocol != PPP_CCP) - ++num_np_open; - } - - if (num_np_open == 0) - /* nothing to do */ - lcp_close(0, "No network protocols running"); -} - -/* - * The peer has failed to authenticate himself using `protocol'. - */ -void -auth_peer_fail(unit, protocol) - int unit, protocol; -{ - /* - * Authentication failure: take the link down - */ - lcp_close(unit, "Authentication failed"); - status = EXIT_PEER_AUTH_FAILED; -} - -/* - * The peer has been successfully authenticated using `protocol'. - */ -void -auth_peer_success(unit, protocol, name, namelen) - int unit, protocol; - char *name; - int namelen; -{ - int bit; - - switch (protocol) { - case PPP_CHAP: - bit = CHAP_PEER; - break; - case PPP_PAP: - bit = PAP_PEER; - break; - default: - warn("auth_peer_success: unknown protocol %x", protocol); - return; - } - - /* - * Save the authenticated name of the peer for later. - */ - if (namelen > sizeof(peer_authname) - 1) - namelen = sizeof(peer_authname) - 1; - BCOPY(name, peer_authname, namelen); - peer_authname[namelen] = 0; - script_setenv("PEERNAME", peer_authname, 0); - - /* - * If there is no more authentication still to be done, - * proceed to the network (or callback) phase. - */ - if ((auth_pending[unit] &= ~bit) == 0) - network_phase(unit); -} - -/* - * We have failed to authenticate ourselves to the peer using `protocol'. - */ -void -auth_withpeer_fail(unit, protocol) - int unit, protocol; -{ - if (passwd_from_file) - BZERO(passwd, MAXSECRETLEN); - /* - * We've failed to authenticate ourselves to our peer. - * Some servers keep sending CHAP challenges, but there - * is no point in persisting without any way to get updated - * authentication secrets. - */ - lcp_close(unit, "Failed to authenticate ourselves to peer"); - status = EXIT_AUTH_TOPEER_FAILED; -} - -/* - * We have successfully authenticated ourselves with the peer using `protocol'. - */ -void -auth_withpeer_success(unit, protocol) - int unit, protocol; -{ - int bit; - - switch (protocol) { - case PPP_CHAP: - bit = CHAP_WITHPEER; - break; - case PPP_PAP: - if (passwd_from_file) - BZERO(passwd, MAXSECRETLEN); - bit = PAP_WITHPEER; - break; - default: - warn("auth_withpeer_success: unknown protocol %x", protocol); - bit = 0; - } - - /* - * If there is no more authentication still being done, - * proceed to the network (or callback) phase. - */ - if ((auth_pending[unit] &= ~bit) == 0) - network_phase(unit); -} - - -/* - * np_up - a network protocol has come up. - */ -void -np_up(unit, proto) - int unit, proto; -{ - int tlim; - - if (num_np_up == 0) { - /* - * At this point we consider that the link has come up successfully. - */ - status = EXIT_OK; - unsuccess = 0; - new_phase(PHASE_RUNNING); - - if (idle_time_hook != 0) - tlim = (*idle_time_hook)(NULL); - else - tlim = idle_time_limit; - if (tlim > 0) - TIMEOUT(check_idle, NULL, tlim); - - /* - * Set a timeout to close the connection once the maximum - * connect time has expired. - */ - if (maxconnect > 0) - TIMEOUT(connect_time_expired, 0, maxconnect); - - /* - * Detach now, if the updetach option was given. - */ - if (updetach && !nodetach) - detach(); - } - ++num_np_up; -} - -/* - * np_down - a network protocol has gone down. - */ -void -np_down(unit, proto) - int unit, proto; -{ - if (--num_np_up == 0) { - UNTIMEOUT(check_idle, NULL); - new_phase(PHASE_NETWORK); - } -} - -/* - * np_finished - a network protocol has finished using the link. - */ -void -np_finished(unit, proto) - int unit, proto; -{ - if (--num_np_open <= 0) { - /* no further use for the link: shut up shop. */ - lcp_close(0, "No network protocols running"); - } -} - -/* - * check_idle - check whether the link has been idle for long - * enough that we can shut it down. - */ -static void -check_idle(arg) - void *arg; -{ - struct ppp_idle idle; - time_t itime; - int tlim; - - if (!get_idle_time(0, &idle)) - return; - if (idle_time_hook != 0) { - tlim = idle_time_hook(&idle); - } else { - itime = MIN(idle.xmit_idle, idle.recv_idle); - tlim = idle_time_limit - itime; - } - if (tlim <= 0) { - /* link is idle: shut it down. */ - notice("Terminating connection due to lack of activity."); - lcp_close(0, "Link inactive"); - need_holdoff = 0; - status = EXIT_IDLE_TIMEOUT; - } else { - TIMEOUT(check_idle, NULL, tlim); - } -} - -/* - * connect_time_expired - log a message and close the connection. - */ -static void -connect_time_expired(arg) - void *arg; -{ - info("Connect time expired"); - lcp_close(0, "Connect time expired"); /* Close connection */ - status = EXIT_CONNECT_TIME; -} - -/* - * auth_check_options - called to check authentication options. - */ -void -auth_check_options() -{ - lcp_options *wo = &lcp_wantoptions[0]; - int can_auth; - int lacks_ip; - - /* Default our_name to hostname, and user to our_name */ - if (our_name[0] == 0 || usehostname) - strlcpy(our_name, hostname, sizeof(our_name)); - if (user[0] == 0) - strlcpy(user, our_name, sizeof(user)); - - /* - * If we have a default route, require the peer to authenticate - * unless the noauth option was given or the real user is root. - */ - if (!auth_required && !allow_any_ip && have_route_to(0) && !privileged) { - auth_required = 1; - default_auth = 1; - } - - /* If authentication is required, ask peer for CHAP or PAP. */ - if (auth_required) { - allow_any_ip = 0; - if (!wo->neg_chap && !wo->neg_upap) { - wo->neg_chap = 1; - wo->neg_upap = 1; - } - } else { - wo->neg_chap = 0; - wo->neg_upap = 0; - } - - /* - * Check whether we have appropriate secrets to use - * to authenticate the peer. - */ - lacks_ip = 0; - can_auth = wo->neg_upap && (uselogin || have_pap_secret(&lacks_ip)); - if (!can_auth && wo->neg_chap) { - can_auth = have_chap_secret((explicit_remote? remote_name: NULL), - our_name, 1, &lacks_ip); - } - - if (auth_required && !can_auth && noauth_addrs == NULL) { - if (default_auth) { - option_error( -"By default the remote system is required to authenticate itself"); - option_error( -"(because this system has a default route to the internet)"); - } else if (explicit_remote) - option_error( -"The remote system (%s) is required to authenticate itself", - remote_name); - else - option_error( -"The remote system is required to authenticate itself"); - option_error( -"but I couldn't find any suitable secret (password) for it to use to do so."); - if (lacks_ip) - option_error( -"(None of the available passwords would let it use an IP address.)"); - - exit(1); - } -} - -/* - * auth_reset - called when LCP is starting negotiations to recheck - * authentication options, i.e. whether we have appropriate secrets - * to use for authenticating ourselves and/or the peer. - */ -void -auth_reset(unit) - int unit; -{ - lcp_options *go = &lcp_gotoptions[unit]; - lcp_options *ao = &lcp_allowoptions[0]; - - ao->neg_upap = !refuse_pap && (passwd[0] != 0 || get_pap_passwd(NULL)); - ao->neg_chap = !refuse_chap - && (passwd[0] != 0 - || have_chap_secret(user, (explicit_remote? remote_name: NULL), - 0, NULL)); - - if (go->neg_upap && !uselogin && !have_pap_secret(NULL)) - go->neg_upap = 0; - if (go->neg_chap) { - if (!have_chap_secret((explicit_remote? remote_name: NULL), - our_name, 1, NULL)) - go->neg_chap = 0; - } -} - - -/* - * check_passwd - Check the user name and passwd against the PAP secrets - * file. If requested, also check against the system password database, - * and login the user if OK. - * - * returns: - * UPAP_AUTHNAK: Authentication failed. - * UPAP_AUTHACK: Authentication succeeded. - * In either case, msg points to an appropriate message. - */ -int -check_passwd(unit, auser, userlen, apasswd, passwdlen, msg) - int unit; - char *auser; - int userlen; - char *apasswd; - int passwdlen; - char **msg; -{ - int ret; - char *filename; - FILE *f; - struct wordlist *addrs = NULL, *opts = NULL; - char passwd[256], user[256]; - char secret[MAXWORDLEN]; - static int attempts = 0; - - /* - * Make copies of apasswd and auser, then null-terminate them. - * If there are unprintable characters in the password, make - * them visible. - */ - slprintf(passwd, sizeof(passwd), "%.*v", passwdlen, apasswd); - slprintf(user, sizeof(user), "%.*v", userlen, auser); - *msg = ""; - - /* - * Check if a plugin wants to handle this. - */ - if (pap_auth_hook) { - ret = (*pap_auth_hook)(user, passwd, msg, &addrs, &opts); - if (ret >= 0) { - if (ret) - set_allowed_addrs(unit, addrs, opts); - BZERO(passwd, sizeof(passwd)); - if (addrs != 0) - free_wordlist(addrs); - return ret? UPAP_AUTHACK: UPAP_AUTHNAK; - } - } - - /* - * Open the file of pap secrets and scan for a suitable secret - * for authenticating this user. - */ - filename = _PATH_UPAPFILE; - addrs = opts = NULL; - ret = UPAP_AUTHNAK; - f = fopen(filename, "r"); - if (f == NULL) { - error("Can't open PAP password file %s: %m", filename); - - } else { - check_access(f, filename); - if (scan_authfile(f, user, our_name, secret, &addrs, &opts, filename) < 0) { - warn("no PAP secret found for %s", user); - } else { - /* - * If the secret is "@login", it means to check - * the password against the login database. - */ - int login_secret = strcmp(secret, "@login") == 0; - ret = UPAP_AUTHACK; - if (uselogin || login_secret) { - /* login option or secret is @login */ - ret = plogin(user, passwd, msg); - if (ret == UPAP_AUTHNAK) - warn("PAP login failure for %s", user); - else - used_login = 1; - } - if (secret[0] != 0 && !login_secret) { - /* password given in pap-secrets - must match */ - if ((cryptpap || strcmp(passwd, secret) != 0) - && strcmp(crypt(passwd, secret), secret) != 0) { - ret = UPAP_AUTHNAK; - warn("PAP authentication failure for %s", user); - } - } - } - fclose(f); - } - - if (ret == UPAP_AUTHNAK) { - if (**msg == 0) - *msg = "Login incorrect"; - /* - * XXX can we ever get here more than once?? - * Frustrate passwd stealer programs. - * Allow 10 tries, but start backing off after 3 (stolen from login). - * On 10'th, drop the connection. - */ - if (attempts++ >= 10) { - warn("%d LOGIN FAILURES ON %s, %s", attempts, devnam, user); - lcp_close(unit, "login failed"); - } - if (attempts > 3) - sleep((u_int) (attempts - 3) * 5); - if (opts != NULL) - free_wordlist(opts); - - } else { - attempts = 0; /* Reset count */ - if (**msg == 0) - *msg = "Login ok"; - set_allowed_addrs(unit, addrs, opts); - } - - if (addrs != NULL) - free_wordlist(addrs); - BZERO(passwd, sizeof(passwd)); - BZERO(secret, sizeof(secret)); - - return ret; -} - -/* - * This function is needed for PAM. - */ - -#ifdef USE_PAM -/* Static variables used to communicate between the conversation function - * and the server_login function - */ -static char *PAM_username; -static char *PAM_password; -static int PAM_error = 0; -static pam_handle_t *pamh = NULL; - -/* PAM conversation function - * Here we assume (for now, at least) that echo on means login name, and - * echo off means password. - */ - -static int PAM_conv (int num_msg, const struct pam_message **msg, - struct pam_response **resp, void *appdata_ptr) -{ - int replies = 0; - struct pam_response *reply = NULL; - -#define COPY_STRING(s) (s) ? strdup(s) : NULL - - reply = malloc(sizeof(struct pam_response) * num_msg); - if (!reply) return PAM_CONV_ERR; - - for (replies = 0; replies < num_msg; replies++) { - switch (msg[replies]->msg_style) { - case PAM_PROMPT_ECHO_ON: - reply[replies].resp_retcode = PAM_SUCCESS; - reply[replies].resp = COPY_STRING(PAM_username); - /* PAM frees resp */ - break; - case PAM_PROMPT_ECHO_OFF: - reply[replies].resp_retcode = PAM_SUCCESS; - reply[replies].resp = COPY_STRING(PAM_password); - /* PAM frees resp */ - break; - case PAM_TEXT_INFO: - /* fall through */ - case PAM_ERROR_MSG: - /* ignore it, but pam still wants a NULL response... */ - reply[replies].resp_retcode = PAM_SUCCESS; - reply[replies].resp = NULL; - break; - default: - /* Must be an error of some sort... */ - free (reply); - PAM_error = 1; - return PAM_CONV_ERR; - } - } - *resp = reply; - return PAM_SUCCESS; -} - -static struct pam_conv PAM_conversation = { - &PAM_conv, - NULL -}; -#endif /* USE_PAM */ - -/* - * plogin - Check the user name and password against the system - * password database, and login the user if OK. - * - * returns: - * UPAP_AUTHNAK: Login failed. - * UPAP_AUTHACK: Login succeeded. - * In either case, msg points to an appropriate message. - */ - -static int -plogin(user, passwd, msg) - char *user; - char *passwd; - char **msg; -{ - char *tty; - -#ifdef USE_PAM - int pam_error; - - pam_error = pam_start ("ppp", user, &PAM_conversation, &pamh); - if (pam_error != PAM_SUCCESS) { - *msg = (char *) pam_strerror (pamh, pam_error); - reopen_log(); - return UPAP_AUTHNAK; - } - /* - * Define the fields for the credential validation - */ - - PAM_username = user; - PAM_password = passwd; - PAM_error = 0; - pam_set_item (pamh, PAM_TTY, devnam); /* this might be useful to some modules */ - - /* - * Validate the user - */ - pam_error = pam_authenticate (pamh, PAM_SILENT); - if (pam_error == PAM_SUCCESS && !PAM_error) { - pam_error = pam_acct_mgmt (pamh, PAM_SILENT); - if (pam_error == PAM_SUCCESS) - pam_error = pam_open_session (pamh, PAM_SILENT); - } - - *msg = (char *) pam_strerror (pamh, pam_error); - - /* - * Clean up the mess - */ - reopen_log(); /* apparently the PAM stuff does closelog() */ - PAM_username = NULL; - PAM_password = NULL; - if (pam_error != PAM_SUCCESS) - return UPAP_AUTHNAK; -#else /* #ifdef USE_PAM */ - -/* - * Use the non-PAM methods directly - */ - -#ifdef HAS_SHADOW - struct spwd *spwd; - struct spwd *getspnam(); -#endif - struct passwd *pw = getpwnam(user); - - endpwent(); - if (pw == NULL) - return (UPAP_AUTHNAK); - -#ifdef HAS_SHADOW - spwd = getspnam(user); - endspent(); - if (spwd) { - /* check the age of the password entry */ - long now = time(NULL) / 86400L; - - if ((spwd->sp_expire > 0 && now >= spwd->sp_expire) - || ((spwd->sp_max >= 0 && spwd->sp_max < 10000) - && spwd->sp_lstchg >= 0 - && now >= spwd->sp_lstchg + spwd->sp_max)) { - warn("Password for %s has expired", user); - return (UPAP_AUTHNAK); - } - pw->pw_passwd = spwd->sp_pwdp; - } -#endif - - /* - * If no passwd, don't let them login. - */ - if (pw->pw_passwd == NULL || strlen(pw->pw_passwd) < 2 - || strcmp(crypt(passwd, pw->pw_passwd), pw->pw_passwd) != 0) - return (UPAP_AUTHNAK); - -#endif /* #ifdef USE_PAM */ - - /* - * Write a wtmp entry for this user. - */ - - tty = devnam; - if (strncmp(tty, "/dev/", 5) == 0) - tty += 5; -// logwtmp(tty, user, remote_name); /* Add wtmp login entry */ - -#if defined(_PATH_LASTLOG) && !defined(USE_PAM) - if (pw != (struct passwd *)NULL) { - struct lastlog ll; - int fd; - - if ((fd = open(_PATH_LASTLOG, O_RDWR, 0)) >= 0) { - (void)lseek(fd, (off_t)(pw->pw_uid * sizeof(ll)), SEEK_SET); - memset((void *)&ll, 0, sizeof(ll)); - (void)time(&ll.ll_time); - (void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line)); - (void)write(fd, (char *)&ll, sizeof(ll)); - (void)close(fd); - } - } -#endif /* _PATH_LASTLOG and not USE_PAM */ - - info("user %s logged in", user); - logged_in = 1; - - return (UPAP_AUTHACK); -} - -/* - * plogout - Logout the user. - */ -static void -plogout() -{ -#ifdef USE_PAM - int pam_error; - - if (pamh != NULL) { - pam_error = pam_close_session (pamh, PAM_SILENT); - pam_end (pamh, pam_error); - pamh = NULL; - } - /* Apparently the pam stuff does closelog(). */ - reopen_log(); -#else /* ! USE_PAM */ - char *tty; - - tty = devnam; - if (strncmp(tty, "/dev/", 5) == 0) - tty += 5; -// logwtmp(tty, "", ""); /* Wipe out utmp logout entry */ -#endif /* ! USE_PAM */ - logged_in = 0; -} - - -/* - * null_login - Check if a username of "" and a password of "" are - * acceptable, and iff so, set the list of acceptable IP addresses - * and return 1. - */ -static int -null_login(unit) - int unit; -{ - char *filename; - FILE *f; - int i, ret; - struct wordlist *addrs, *opts; - char secret[MAXWORDLEN]; - - /* - * Open the file of pap secrets and scan for a suitable secret. - */ - filename = _PATH_UPAPFILE; - addrs = NULL; - f = fopen(filename, "r"); - if (f == NULL) - return 0; - check_access(f, filename); - - i = scan_authfile(f, "", our_name, secret, &addrs, &opts, filename); - ret = i >= 0 && secret[0] == 0; - BZERO(secret, sizeof(secret)); - - if (ret) - set_allowed_addrs(unit, addrs, opts); - else if (opts != 0) - free_wordlist(opts); - if (addrs != 0) - free_wordlist(addrs); - - fclose(f); - return ret; -} - - -/* - * get_pap_passwd - get a password for authenticating ourselves with - * our peer using PAP. Returns 1 on success, 0 if no suitable password - * could be found. - * Assumes passwd points to MAXSECRETLEN bytes of space (if non-null). - */ -static int -get_pap_passwd(passwd) - char *passwd; -{ - char *filename; - FILE *f; - int ret; - char secret[MAXWORDLEN]; - - /* - * Check whether a plugin wants to supply this. - */ - if (pap_passwd_hook) { - ret = (*pap_passwd_hook)(user, passwd); - if (ret >= 0) - return ret; - } - - filename = _PATH_UPAPFILE; - f = fopen(filename, "r"); - if (f == NULL) - return 0; - check_access(f, filename); - ret = scan_authfile(f, user, - (remote_name[0]? remote_name: NULL), - secret, NULL, NULL, filename); - fclose(f); - if (ret < 0) - return 0; - if (passwd != NULL) - strlcpy(passwd, secret, MAXSECRETLEN); - BZERO(secret, sizeof(secret)); - return 1; -} - - -/* - * have_pap_secret - check whether we have a PAP file with any - * secrets that we could possibly use for authenticating the peer. - */ -static int -have_pap_secret(lacks_ipp) - int *lacks_ipp; -{ - FILE *f; - int ret; - char *filename; - struct wordlist *addrs; - - /* let the plugin decide, if there is one */ - if (pap_check_hook) { - ret = (*pap_check_hook)(); - if (ret >= 0) - return ret; - } - - filename = _PATH_UPAPFILE; - f = fopen(filename, "r"); - if (f == NULL) - return 0; - - ret = scan_authfile(f, (explicit_remote? remote_name: NULL), our_name, - NULL, &addrs, NULL, filename); - fclose(f); - if (ret >= 0 && !some_ip_ok(addrs)) { - if (lacks_ipp != 0) - *lacks_ipp = 1; - ret = -1; - } - if (addrs != 0) - free_wordlist(addrs); - - return ret >= 0; -} - - -/* - * have_chap_secret - check whether we have a CHAP file with a - * secret that we could possibly use for authenticating `client' - * on `server'. Either can be the null string, meaning we don't - * know the identity yet. - */ -static int -have_chap_secret(client, server, need_ip, lacks_ipp) - char *client; - char *server; - int need_ip; - int *lacks_ipp; -{ - FILE *f; - int ret; - char *filename; - struct wordlist *addrs; - - filename = _PATH_CHAPFILE; - f = fopen(filename, "r"); - if (f == NULL) - return 0; - - if (client != NULL && client[0] == 0) - client = NULL; - else if (server != NULL && server[0] == 0) - server = NULL; - - ret = scan_authfile(f, client, server, NULL, &addrs, NULL, filename); - fclose(f); - if (ret >= 0 && need_ip && !some_ip_ok(addrs)) { - if (lacks_ipp != 0) - *lacks_ipp = 1; - ret = -1; - } - if (addrs != 0) - free_wordlist(addrs); - - return ret >= 0; -} - - -/* - * get_secret - open the CHAP secret file and return the secret - * for authenticating the given client on the given server. - * (We could be either client or server). - */ -int -get_secret(unit, client, server, secret, secret_len, am_server) - int unit; - char *client; - char *server; - char *secret; - int *secret_len; - int am_server; -{ - FILE *f; - int ret, len; - char *filename; - struct wordlist *addrs, *opts; - char secbuf[MAXWORDLEN]; - - if (!am_server && passwd[0] != 0) { - strlcpy(secbuf, passwd, sizeof(secbuf)); - } else { - filename = _PATH_CHAPFILE; - addrs = NULL; - secbuf[0] = 0; - - f = fopen(filename, "r"); - if (f == NULL) { - error("Can't open chap secret file %s: %m", filename); - return 0; - } - check_access(f, filename); - - ret = scan_authfile(f, client, server, secbuf, &addrs, &opts, filename); - fclose(f); - if (ret < 0) - return 0; - - if (am_server) - set_allowed_addrs(unit, addrs, opts); - else if (opts != 0) - free_wordlist(opts); - if (addrs != 0) - free_wordlist(addrs); - } - - len = strlen(secbuf); - if (len > MAXSECRETLEN) { - error("Secret for %s on %s is too long", client, server); - len = MAXSECRETLEN; - } - BCOPY(secbuf, secret, len); - BZERO(secbuf, sizeof(secbuf)); - *secret_len = len; - - return 1; -} - -/* - * set_allowed_addrs() - set the list of allowed addresses. - * Also looks for `--' indicating options to apply for this peer - * and leaves the following words in extra_options. - */ -static void -set_allowed_addrs(unit, addrs, opts) - int unit; - struct wordlist *addrs; - struct wordlist *opts; -{ - int n; - struct wordlist *ap, **plink; - struct permitted_ip *ip; - char *ptr_word, *ptr_mask; - struct hostent *hp; - u_int32_t a, mask, offset; - struct ipcp_options *wo = &ipcp_wantoptions[unit]; - u_int32_t suggested_ip = 0; - - if (addresses[unit] != NULL) - free(addresses[unit]); - addresses[unit] = NULL; - if (extra_options != NULL) - free_wordlist(extra_options); - extra_options = opts; - - /* - * Count the number of IP addresses given. - */ - n = wordlist_count(addrs) + wordlist_count(noauth_addrs); - if (n == 0) - return; - ip = (struct permitted_ip *) malloc((n + 1) * sizeof(struct permitted_ip)); - if (ip == 0) - return; - - /* temporarily append the noauth_addrs list to addrs */ - for (plink = &addrs; *plink != NULL; plink = &(*plink)->next) - ; - *plink = noauth_addrs; - - n = 0; - for (ap = addrs; ap != NULL; ap = ap->next) { - /* "-" means no addresses authorized, "*" means any address allowed */ - ptr_word = ap->word; - if (strcmp(ptr_word, "-") == 0) - break; - if (strcmp(ptr_word, "*") == 0) { - ip[n].permit = 1; - ip[n].base = ip[n].mask = 0; - ++n; - break; - } - - ip[n].permit = 1; - if (*ptr_word == '!') { - ip[n].permit = 0; - ++ptr_word; - } - - mask = ~ (u_int32_t) 0; - offset = 0; - ptr_mask = strchr (ptr_word, '/'); - if (ptr_mask != NULL) { - int bit_count; - char *endp; - - bit_count = (int) strtol (ptr_mask+1, &endp, 10); - if (bit_count <= 0 || bit_count > 32) { - warn("invalid address length %v in auth. address list", - ptr_mask+1); - continue; - } - bit_count = 32 - bit_count; /* # bits in host part */ - if (*endp == '+') { - offset = ifunit + 1; - ++endp; - } - if (*endp != 0) { - warn("invalid address length syntax: %v", ptr_mask+1); - continue; - } - *ptr_mask = '\0'; - mask <<= bit_count; - } - - hp = gethostbyname(ptr_word); - if (hp != NULL && hp->h_addrtype == AF_INET) { - a = *(u_int32_t *)hp->h_addr; - } else { - printf("*** getnetbyname is unsupported, please report bug! ***\n"); - return; - } - - if (ptr_mask != NULL) - *ptr_mask = '/'; - - if (a == (u_int32_t)-1L) { - warn("unknown host %s in auth. address list", ap->word); - continue; - } - if (offset != 0) { - if (offset >= ~mask) { - warn("interface unit %d too large for subnet %v", - ifunit, ptr_word); - continue; - } - a = htonl((ntohl(a) & mask) + offset); - mask = ~(u_int32_t)0; - } - ip[n].mask = htonl(mask); - ip[n].base = a & ip[n].mask; - ++n; - if (~mask == 0 && suggested_ip == 0) - suggested_ip = a; - } - *plink = NULL; - - ip[n].permit = 0; /* make the last entry forbid all addresses */ - ip[n].base = 0; /* to terminate the list */ - ip[n].mask = 0; - - addresses[unit] = ip; - - /* - * If the address given for the peer isn't authorized, or if - * the user hasn't given one, AND there is an authorized address - * which is a single host, then use that if we find one. - */ - if (suggested_ip != 0 - && (wo->hisaddr == 0 || !auth_ip_addr(unit, wo->hisaddr))) { - wo->hisaddr = suggested_ip; - /* - * Do we insist on this address? No, if there are other - * addresses authorized than the suggested one. - */ - if (n > 1) - wo->accept_remote = 1; - } -} - -/* - * auth_ip_addr - check whether the peer is authorized to use - * a given IP address. Returns 1 if authorized, 0 otherwise. - */ -int -auth_ip_addr(unit, addr) - int unit; - u_int32_t addr; -{ - int ok; - - /* don't allow loopback or multicast address */ - if (bad_ip_adrs(addr)) - return 0; - - if (addresses[unit] != NULL) { - ok = ip_addr_check(addr, addresses[unit]); - if (ok >= 0) - return ok; - } - if (auth_required) - return 0; /* no addresses authorized */ - return allow_any_ip || privileged || !have_route_to(addr); -} - -static int -ip_addr_check(addr, addrs) - u_int32_t addr; - struct permitted_ip *addrs; -{ - for (; ; ++addrs) - if ((addr & addrs->mask) == addrs->base) - return addrs->permit; -} - -/* - * bad_ip_adrs - return 1 if the IP address is one we don't want - * to use, such as an address in the loopback net or a multicast address. - * addr is in network byte order. - */ -int -bad_ip_adrs(addr) - u_int32_t addr; -{ - addr = ntohl(addr); - return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET - || IN_MULTICAST(addr) || IN_BADCLASS(addr); -} - -/* - * some_ip_ok - check a wordlist to see if it authorizes any - * IP address(es). - */ -static int -some_ip_ok(addrs) - struct wordlist *addrs; -{ - for (; addrs != 0; addrs = addrs->next) { - if (addrs->word[0] == '-') - break; - if (addrs->word[0] != '!') - return 1; /* some IP address is allowed */ - } - return 0; -} - -/* - * check_access - complain if a secret file has too-liberal permissions. - */ -static void -check_access(f, filename) - FILE *f; - char *filename; -{ - struct stat sbuf; - - if (fstat(fileno(f), &sbuf) < 0) { - warn("cannot stat secret file %s: %m", filename); - } else if ((sbuf.st_mode & (S_IRWXG | S_IRWXO)) != 0) { - warn("Warning - secret file %s has world and/or group access", - filename); - } -} - - -/* - * scan_authfile - Scan an authorization file for a secret suitable - * for authenticating `client' on `server'. The return value is -1 - * if no secret is found, otherwise >= 0. The return value has - * NONWILD_CLIENT set if the secret didn't have "*" for the client, and - * NONWILD_SERVER set if the secret didn't have "*" for the server. - * Any following words on the line up to a "--" (i.e. address authorization - * info) are placed in a wordlist and returned in *addrs. Any - * following words (extra options) are placed in a wordlist and - * returned in *opts. - * We assume secret is NULL or points to MAXWORDLEN bytes of space. - */ -static int -scan_authfile(f, client, server, secret, addrs, opts, filename) - FILE *f; - char *client; - char *server; - char *secret; - struct wordlist **addrs; - struct wordlist **opts; - char *filename; -{ - int newline, xxx; - int got_flag, best_flag; - FILE *sf; - struct wordlist *ap, *addr_list, *alist, **app; - char word[MAXWORDLEN]; - char atfile[MAXWORDLEN]; - char lsecret[MAXWORDLEN]; - - if (addrs != NULL) - *addrs = NULL; - if (opts != NULL) - *opts = NULL; - addr_list = NULL; - if (!getword(f, word, &newline, filename)) - return -1; /* file is empty??? */ - newline = 1; - best_flag = -1; - for (;;) { - /* - * Skip until we find a word at the start of a line. - */ - while (!newline && getword(f, word, &newline, filename)) - ; - if (!newline) - break; /* got to end of file */ - - /* - * Got a client - check if it's a match or a wildcard. - */ - got_flag = 0; - if (client != NULL && strcmp(word, client) != 0 && !ISWILD(word)) { - newline = 0; - continue; - } - if (!ISWILD(word)) - got_flag = NONWILD_CLIENT; - - /* - * Now get a server and check if it matches. - */ - if (!getword(f, word, &newline, filename)) - break; - if (newline) - continue; - if (!ISWILD(word)) { - if (server != NULL && strcmp(word, server) != 0) - continue; - got_flag |= NONWILD_SERVER; - } - - /* - * Got some sort of a match - see if it's better than what - * we have already. - */ - if (got_flag <= best_flag) - continue; - - /* - * Get the secret. - */ - if (!getword(f, word, &newline, filename)) - break; - if (newline) - continue; - - if (secret != NULL) { - /* - * Special syntax: @/pathname means read secret from file. - */ - if (word[0] == '@' && word[1] == '/') { - strlcpy(atfile, word+1, sizeof(atfile)); - if ((sf = fopen(atfile, "r")) == NULL) { - warn("can't open indirect secret file %s", atfile); - continue; - } - check_access(sf, atfile); - if (!getword(sf, word, &xxx, atfile)) { - warn("no secret in indirect secret file %s", atfile); - fclose(sf); - continue; - } - fclose(sf); - } - strlcpy(lsecret, word, sizeof(lsecret)); - } - - /* - * Now read address authorization info and make a wordlist. - */ - app = &alist; - for (;;) { - if (!getword(f, word, &newline, filename) || newline) - break; - ap = (struct wordlist *) - malloc(sizeof(struct wordlist) + strlen(word) + 1); - if (ap == NULL) - novm("authorized addresses"); - ap->word = (char *) (ap + 1); - strcpy(ap->word, word); - *app = ap; - app = &ap->next; - } - *app = NULL; - - /* - * This is the best so far; remember it. - */ - best_flag = got_flag; - if (addr_list) - free_wordlist(addr_list); - addr_list = alist; - if (secret != NULL) - strlcpy(secret, lsecret, MAXWORDLEN); - - if (!newline) - break; - } - - /* scan for a -- word indicating the start of options */ - for (app = &addr_list; (ap = *app) != NULL; app = &ap->next) - if (strcmp(ap->word, "--") == 0) - break; - /* ap = start of options */ - if (ap != NULL) { - ap = ap->next; /* first option */ - free(*app); /* free the "--" word */ - *app = NULL; /* terminate addr list */ - } - if (opts != NULL) - *opts = ap; - else if (ap != NULL) - free_wordlist(ap); - if (addrs != NULL) - *addrs = addr_list; - else if (addr_list != NULL) - free_wordlist(addr_list); - - return best_flag; -} - -/* - * wordlist_count - return the number of items in a wordlist - */ -static int -wordlist_count(wp) - struct wordlist *wp; -{ - int n; - - for (n = 0; wp != NULL; wp = wp->next) - ++n; - return n; -} - -/* - * free_wordlist - release memory allocated for a wordlist. - */ -static void -free_wordlist(wp) - struct wordlist *wp; -{ - struct wordlist *next; - - while (wp != NULL) { - next = wp->next; - free(wp); - wp = next; - } -} - -/* - * auth_script_done - called when the auth-up or auth-down script - * has finished. - */ -static void -auth_script_done(arg) - void *arg; -{ - auth_script_pid = 0; - switch (auth_script_state) { - case s_up: - if (auth_state == s_down) { - auth_script_state = s_down; - auth_script(_PATH_AUTHDOWN); - } - break; - case s_down: - if (auth_state == s_up) { - auth_script_state = s_up; - auth_script(_PATH_AUTHUP); - } - break; - } -} - -/* - * auth_script - execute a script with arguments - * interface-name peer-name real-user tty speed - */ -static void -auth_script(script) - char *script; -{ - char strspeed[32]; - struct passwd *pw; - char struid[32]; - char *user_name; - char *argv[8]; - - if ((pw = getpwuid(getuid())) != NULL && pw->pw_name != NULL) - user_name = pw->pw_name; - else { - slprintf(struid, sizeof(struid), "%d", getuid()); - user_name = struid; - } - slprintf(strspeed, sizeof(strspeed), "%d", baud_rate); - - argv[0] = script; - argv[1] = ifname; - argv[2] = peer_authname; - argv[3] = user_name; - argv[4] = devnam; - argv[5] = strspeed; - argv[6] = NULL; - - auth_script_pid = run_program(script, argv, 0, auth_script_done, NULL); -} diff --git a/mdk-stage1/ppp/pppd/cbcp.c b/mdk-stage1/ppp/pppd/cbcp.c deleted file mode 100644 index 8c57b3cde..000000000 --- a/mdk-stage1/ppp/pppd/cbcp.c +++ /dev/null @@ -1,456 +0,0 @@ -/* - * cbcp - Call Back Configuration Protocol. - * - * Copyright (c) 1995 Pedro Roque Marques - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Pedro Roque Marques. The name of the author may not be used to - * endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -#include <stdio.h> -#include <string.h> -#include <sys/types.h> -#include <sys/time.h> - -#include "pppd.h" -#include "cbcp.h" -#include "fsm.h" -#include "lcp.h" - -static const char rcsid[] = RCSID; - -/* - * Options. - */ -static int setcbcp __P((char **)); - -static option_t cbcp_option_list[] = { - { "callback", o_special, setcbcp, - "Ask for callback", OPT_PRIO | OPT_A2STRVAL, &cbcp[0].us_number }, - { NULL } -}; - -/* - * Protocol entry points. - */ -static void cbcp_init __P((int unit)); -static void cbcp_open __P((int unit)); -static void cbcp_lowerup __P((int unit)); -static void cbcp_input __P((int unit, u_char *pkt, int len)); -static void cbcp_protrej __P((int unit)); -static int cbcp_printpkt __P((u_char *pkt, int len, - void (*printer) __P((void *, char *, ...)), - void *arg)); - -struct protent cbcp_protent = { - PPP_CBCP, - cbcp_init, - cbcp_input, - cbcp_protrej, - cbcp_lowerup, - NULL, - cbcp_open, - NULL, - cbcp_printpkt, - NULL, - 0, - "CBCP", - NULL, - cbcp_option_list, - NULL, - NULL, - NULL -}; - -cbcp_state cbcp[NUM_PPP]; - -/* internal prototypes */ - -static void cbcp_recvreq __P((cbcp_state *us, char *pckt, int len)); -static void cbcp_resp __P((cbcp_state *us)); -static void cbcp_up __P((cbcp_state *us)); -static void cbcp_recvack __P((cbcp_state *us, char *pckt, int len)); -static void cbcp_send __P((cbcp_state *us, u_char code, u_char *buf, int len)); - -/* option processing */ -static int -setcbcp(argv) - char **argv; -{ - lcp_wantoptions[0].neg_cbcp = 1; - cbcp_protent.enabled_flag = 1; - cbcp[0].us_number = strdup(*argv); - if (cbcp[0].us_number == 0) - novm("callback number"); - cbcp[0].us_type |= (1 << CB_CONF_USER); - cbcp[0].us_type |= (1 << CB_CONF_ADMIN); - return (1); -} - -/* init state */ -static void -cbcp_init(iface) - int iface; -{ - cbcp_state *us; - - us = &cbcp[iface]; - memset(us, 0, sizeof(cbcp_state)); - us->us_unit = iface; - us->us_type |= (1 << CB_CONF_NO); -} - -/* lower layer is up */ -static void -cbcp_lowerup(iface) - int iface; -{ - cbcp_state *us = &cbcp[iface]; - - dbglog("cbcp_lowerup"); - dbglog("want: %d", us->us_type); - - if (us->us_type == CB_CONF_USER) - dbglog("phone no: %s", us->us_number); -} - -static void -cbcp_open(unit) - int unit; -{ - dbglog("cbcp_open"); -} - -/* process an incomming packet */ -static void -cbcp_input(unit, inpacket, pktlen) - int unit; - u_char *inpacket; - int pktlen; -{ - u_char *inp; - u_char code, id; - u_short len; - - cbcp_state *us = &cbcp[unit]; - - inp = inpacket; - - if (pktlen < CBCP_MINLEN) { - error("CBCP packet is too small"); - return; - } - - GETCHAR(code, inp); - GETCHAR(id, inp); - GETSHORT(len, inp); - -#if 0 - if (len > pktlen) { - error("CBCP packet: invalid length"); - return; - } -#endif - - len -= CBCP_MINLEN; - - switch(code) { - case CBCP_REQ: - us->us_id = id; - cbcp_recvreq(us, inp, len); - break; - - case CBCP_RESP: - dbglog("CBCP_RESP received"); - break; - - case CBCP_ACK: - if (id != us->us_id) - dbglog("id doesn't match: expected %d recv %d", - us->us_id, id); - - cbcp_recvack(us, inp, len); - break; - - default: - break; - } -} - -/* protocol was rejected by foe */ -void cbcp_protrej(int iface) -{ -} - -char *cbcp_codenames[] = { - "Request", "Response", "Ack" -}; - -char *cbcp_optionnames[] = { - "NoCallback", - "UserDefined", - "AdminDefined", - "List" -}; - -/* pretty print a packet */ -static int -cbcp_printpkt(p, plen, printer, arg) - u_char *p; - int plen; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int code, opt, id, len, olen, delay; - u_char *pstart; - - if (plen < HEADERLEN) - return 0; - pstart = p; - GETCHAR(code, p); - GETCHAR(id, p); - GETSHORT(len, p); - if (len < HEADERLEN || len > plen) - return 0; - - if (code >= 1 && code <= sizeof(cbcp_codenames) / sizeof(char *)) - printer(arg, " %s", cbcp_codenames[code-1]); - else - printer(arg, " code=0x%x", code); - - printer(arg, " id=0x%x", id); - len -= HEADERLEN; - - switch (code) { - case CBCP_REQ: - case CBCP_RESP: - case CBCP_ACK: - while(len >= 2) { - GETCHAR(opt, p); - GETCHAR(olen, p); - - if (olen < 2 || olen > len) { - break; - } - - printer(arg, " <"); - len -= olen; - - if (opt >= 1 && opt <= sizeof(cbcp_optionnames) / sizeof(char *)) - printer(arg, " %s", cbcp_optionnames[opt-1]); - else - printer(arg, " option=0x%x", opt); - - if (olen > 2) { - GETCHAR(delay, p); - printer(arg, " delay = %d", delay); - } - - if (olen > 3) { - int addrt; - char str[256]; - - GETCHAR(addrt, p); - memcpy(str, p, olen - 4); - str[olen - 4] = 0; - printer(arg, " number = %s", str); - } - printer(arg, ">"); - break; - } - - default: - break; - } - - for (; len > 0; --len) { - GETCHAR(code, p); - printer(arg, " %.2x", code); - } - - return p - pstart; -} - -/* received CBCP request */ -static void -cbcp_recvreq(us, pckt, pcktlen) - cbcp_state *us; - char *pckt; - int pcktlen; -{ - u_char type, opt_len, delay, addr_type; - char address[256]; - int len = pcktlen; - - address[0] = 0; - - while (len) { - dbglog("length: %d", len); - - GETCHAR(type, pckt); - GETCHAR(opt_len, pckt); - - if (opt_len > 2) - GETCHAR(delay, pckt); - - us->us_allowed |= (1 << type); - - switch(type) { - case CB_CONF_NO: - dbglog("no callback allowed"); - break; - - case CB_CONF_USER: - dbglog("user callback allowed"); - if (opt_len > 4) { - GETCHAR(addr_type, pckt); - memcpy(address, pckt, opt_len - 4); - address[opt_len - 4] = 0; - if (address[0]) - dbglog("address: %s", address); - } - break; - - case CB_CONF_ADMIN: - dbglog("user admin defined allowed"); - break; - - case CB_CONF_LIST: - break; - } - len -= opt_len; - } - - cbcp_resp(us); -} - -static void -cbcp_resp(us) - cbcp_state *us; -{ - u_char cb_type; - u_char buf[256]; - u_char *bufp = buf; - int len = 0; - - cb_type = us->us_allowed & us->us_type; - dbglog("cbcp_resp cb_type=%d", cb_type); - -#if 0 - if (!cb_type) - lcp_down(us->us_unit); -#endif - - if (cb_type & ( 1 << CB_CONF_USER ) ) { - dbglog("cbcp_resp CONF_USER"); - PUTCHAR(CB_CONF_USER, bufp); - len = 3 + 1 + strlen(us->us_number) + 1; - PUTCHAR(len , bufp); - PUTCHAR(5, bufp); /* delay */ - PUTCHAR(1, bufp); - BCOPY(us->us_number, bufp, strlen(us->us_number) + 1); - cbcp_send(us, CBCP_RESP, buf, len); - return; - } - - if (cb_type & ( 1 << CB_CONF_ADMIN ) ) { - dbglog("cbcp_resp CONF_ADMIN"); - PUTCHAR(CB_CONF_ADMIN, bufp); - len = 3; - PUTCHAR(len, bufp); - PUTCHAR(5, bufp); /* delay */ - cbcp_send(us, CBCP_RESP, buf, len); - return; - } - - if (cb_type & ( 1 << CB_CONF_NO ) ) { - dbglog("cbcp_resp CONF_NO"); - PUTCHAR(CB_CONF_NO, bufp); - len = 3; - PUTCHAR(len , bufp); - PUTCHAR(0, bufp); - cbcp_send(us, CBCP_RESP, buf, len); - start_networks(); - return; - } -} - -static void -cbcp_send(us, code, buf, len) - cbcp_state *us; - u_char code; - u_char *buf; - int len; -{ - u_char *outp; - int outlen; - - outp = outpacket_buf; - - outlen = 4 + len; - - MAKEHEADER(outp, PPP_CBCP); - - PUTCHAR(code, outp); - PUTCHAR(us->us_id, outp); - PUTSHORT(outlen, outp); - - if (len) - BCOPY(buf, outp, len); - - output(us->us_unit, outpacket_buf, outlen + PPP_HDRLEN); -} - -static void -cbcp_recvack(us, pckt, len) - cbcp_state *us; - char *pckt; - int len; -{ - u_char type, delay, addr_type; - int opt_len; - char address[256]; - - if (len) { - GETCHAR(type, pckt); - GETCHAR(opt_len, pckt); - - if (opt_len > 2) - GETCHAR(delay, pckt); - - if (opt_len > 4) { - GETCHAR(addr_type, pckt); - memcpy(address, pckt, opt_len - 4); - address[opt_len - 4] = 0; - if (address[0]) - dbglog("peer will call: %s", address); - } - if (type == CB_CONF_NO) - return; - } - - cbcp_up(us); -} - -/* ok peer will do callback */ -static void -cbcp_up(us) - cbcp_state *us; -{ - persist = 0; - lcp_close(0, "Call me back, please"); - status = EXIT_CALLBACK; -} diff --git a/mdk-stage1/ppp/pppd/cbcp.h b/mdk-stage1/ppp/pppd/cbcp.h deleted file mode 100644 index c2ab3f689..000000000 --- a/mdk-stage1/ppp/pppd/cbcp.h +++ /dev/null @@ -1,26 +0,0 @@ -#ifndef CBCP_H -#define CBCP_H - -typedef struct cbcp_state { - int us_unit; /* Interface unit number */ - u_char us_id; /* Current id */ - u_char us_allowed; - int us_type; - char *us_number; /* Telefone Number */ -} cbcp_state; - -extern cbcp_state cbcp[]; - -extern struct protent cbcp_protent; - -#define CBCP_MINLEN 4 - -#define CBCP_REQ 1 -#define CBCP_RESP 2 -#define CBCP_ACK 3 - -#define CB_CONF_NO 1 -#define CB_CONF_USER 2 -#define CB_CONF_ADMIN 3 -#define CB_CONF_LIST 4 -#endif diff --git a/mdk-stage1/ppp/pppd/ccp.c b/mdk-stage1/ppp/pppd/ccp.c deleted file mode 100644 index 7e36e384e..000000000 --- a/mdk-stage1/ppp/pppd/ccp.c +++ /dev/null @@ -1,1257 +0,0 @@ -/* - * ccp.c - PPP Compression Control Protocol. - * - * Copyright (c) 1994 The Australian National University. - * All rights reserved. - * - * Permission to use, copy, modify, and distribute this software and its - * documentation is hereby granted, provided that the above copyright - * notice appears in all copies. This software is provided without any - * warranty, express or implied. The Australian National University - * makes no representations about the suitability of this software for - * any purpose. - * - * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY - * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF - * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGE. - * - * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO - * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, - * OR MODIFICATIONS. - */ - -#define RCSID "$Id$" - -#include <stdlib.h> -#include <string.h> - -#include "pppd.h" -#include "fsm.h" -#include "ccp.h" -#include <net/ppp-comp.h> - -static const char rcsid[] = RCSID; - -/* - * Unfortunately there is a bug in zlib which means that using a - * size of 8 (window size = 256) for Deflate compression will cause - * buffer overruns and kernel crashes in the deflate module. - * Until this is fixed we only accept sizes in the range 9 .. 15. - * Thanks to James Carlson for pointing this out. - */ -#define DEFLATE_MIN_WORKS 9 - -/* - * Command-line options. - */ -static int setbsdcomp __P((char **)); -static int setdeflate __P((char **)); -static char bsd_value[8]; -static char deflate_value[8]; - -static option_t ccp_option_list[] = { - { "noccp", o_bool, &ccp_protent.enabled_flag, - "Disable CCP negotiation" }, - { "-ccp", o_bool, &ccp_protent.enabled_flag, - "Disable CCP negotiation", OPT_ALIAS }, - - { "bsdcomp", o_special, (void *)setbsdcomp, - "Request BSD-Compress packet compression", - OPT_PRIO | OPT_A2STRVAL | OPT_STATIC, bsd_value }, - { "nobsdcomp", o_bool, &ccp_wantoptions[0].bsd_compress, - "don't allow BSD-Compress", OPT_PRIOSUB | OPT_A2CLR, - &ccp_allowoptions[0].bsd_compress }, - { "-bsdcomp", o_bool, &ccp_wantoptions[0].bsd_compress, - "don't allow BSD-Compress", OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLR, - &ccp_allowoptions[0].bsd_compress }, - - { "deflate", o_special, (void *)setdeflate, - "request Deflate compression", - OPT_PRIO | OPT_A2STRVAL | OPT_STATIC, deflate_value }, - { "nodeflate", o_bool, &ccp_wantoptions[0].deflate, - "don't allow Deflate compression", OPT_PRIOSUB | OPT_A2CLR, - &ccp_allowoptions[0].deflate }, - { "-deflate", o_bool, &ccp_wantoptions[0].deflate, - "don't allow Deflate compression", OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLR, - &ccp_allowoptions[0].deflate }, - - { "nodeflatedraft", o_bool, &ccp_wantoptions[0].deflate_draft, - "don't use draft deflate #", OPT_A2COPY, - &ccp_allowoptions[0].deflate_draft }, - - { "predictor1", o_bool, &ccp_wantoptions[0].predictor_1, - "request Predictor-1", 1, &ccp_allowoptions[0].predictor_1, OPT_PRIO }, - { "nopredictor1", o_bool, &ccp_wantoptions[0].predictor_1, - "don't allow Predictor-1", OPT_PRIOSUB | OPT_A2CLR, - &ccp_allowoptions[0].predictor_1 }, - { "-predictor1", o_bool, &ccp_wantoptions[0].predictor_1, - "don't allow Predictor-1", OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLR, - &ccp_allowoptions[0].predictor_1 }, - - { NULL } -}; - -/* - * Protocol entry points from main code. - */ -static void ccp_init __P((int unit)); -static void ccp_open __P((int unit)); -static void ccp_close __P((int unit, char *)); -static void ccp_lowerup __P((int unit)); -static void ccp_lowerdown __P((int)); -static void ccp_input __P((int unit, u_char *pkt, int len)); -static void ccp_protrej __P((int unit)); -static int ccp_printpkt __P((u_char *pkt, int len, - void (*printer) __P((void *, char *, ...)), - void *arg)); -static void ccp_datainput __P((int unit, u_char *pkt, int len)); - -struct protent ccp_protent = { - PPP_CCP, - ccp_init, - ccp_input, - ccp_protrej, - ccp_lowerup, - ccp_lowerdown, - ccp_open, - ccp_close, - ccp_printpkt, - ccp_datainput, - 1, - "CCP", - "Compressed", - ccp_option_list, - NULL, - NULL, - NULL -}; - -fsm ccp_fsm[NUM_PPP]; -ccp_options ccp_wantoptions[NUM_PPP]; /* what to request the peer to use */ -ccp_options ccp_gotoptions[NUM_PPP]; /* what the peer agreed to do */ -ccp_options ccp_allowoptions[NUM_PPP]; /* what we'll agree to do */ -ccp_options ccp_hisoptions[NUM_PPP]; /* what we agreed to do */ - -/* - * Callbacks for fsm code. - */ -static void ccp_resetci __P((fsm *)); -static int ccp_cilen __P((fsm *)); -static void ccp_addci __P((fsm *, u_char *, int *)); -static int ccp_ackci __P((fsm *, u_char *, int)); -static int ccp_nakci __P((fsm *, u_char *, int)); -static int ccp_rejci __P((fsm *, u_char *, int)); -static int ccp_reqci __P((fsm *, u_char *, int *, int)); -static void ccp_up __P((fsm *)); -static void ccp_down __P((fsm *)); -static int ccp_extcode __P((fsm *, int, int, u_char *, int)); -static void ccp_rack_timeout __P((void *)); -static char *method_name __P((ccp_options *, ccp_options *)); - -static fsm_callbacks ccp_callbacks = { - ccp_resetci, - ccp_cilen, - ccp_addci, - ccp_ackci, - ccp_nakci, - ccp_rejci, - ccp_reqci, - ccp_up, - ccp_down, - NULL, - NULL, - NULL, - NULL, - ccp_extcode, - "CCP" -}; - -/* - * Do we want / did we get any compression? - */ -#define ANY_COMPRESS(opt) ((opt).deflate || (opt).bsd_compress \ - || (opt).predictor_1 || (opt).predictor_2) - -/* - * Local state (mainly for handling reset-reqs and reset-acks). - */ -static int ccp_localstate[NUM_PPP]; -#define RACK_PENDING 1 /* waiting for reset-ack */ -#define RREQ_REPEAT 2 /* send another reset-req if no reset-ack */ - -#define RACKTIMEOUT 1 /* second */ - -static int all_rejected[NUM_PPP]; /* we rejected all peer's options */ - -/* - * Option parsing. - */ -static int -setbsdcomp(argv) - char **argv; -{ - int rbits, abits; - char *str, *endp; - - str = *argv; - abits = rbits = strtol(str, &endp, 0); - if (endp != str && *endp == ',') { - str = endp + 1; - abits = strtol(str, &endp, 0); - } - if (*endp != 0 || endp == str) { - option_error("invalid parameter '%s' for bsdcomp option", *argv); - return 0; - } - if ((rbits != 0 && (rbits < BSD_MIN_BITS || rbits > BSD_MAX_BITS)) - || (abits != 0 && (abits < BSD_MIN_BITS || abits > BSD_MAX_BITS))) { - option_error("bsdcomp option values must be 0 or %d .. %d", - BSD_MIN_BITS, BSD_MAX_BITS); - return 0; - } - if (rbits > 0) { - ccp_wantoptions[0].bsd_compress = 1; - ccp_wantoptions[0].bsd_bits = rbits; - } else - ccp_wantoptions[0].bsd_compress = 0; - if (abits > 0) { - ccp_allowoptions[0].bsd_compress = 1; - ccp_allowoptions[0].bsd_bits = abits; - } else - ccp_allowoptions[0].bsd_compress = 0; - slprintf(bsd_value, sizeof(bsd_value), - rbits == abits? "%d": "%d,%d", rbits, abits); - - return 1; -} - -static int -setdeflate(argv) - char **argv; -{ - int rbits, abits; - char *str, *endp; - - str = *argv; - abits = rbits = strtol(str, &endp, 0); - if (endp != str && *endp == ',') { - str = endp + 1; - abits = strtol(str, &endp, 0); - } - if (*endp != 0 || endp == str) { - option_error("invalid parameter '%s' for deflate option", *argv); - return 0; - } - if ((rbits != 0 && (rbits < DEFLATE_MIN_SIZE || rbits > DEFLATE_MAX_SIZE)) - || (abits != 0 && (abits < DEFLATE_MIN_SIZE - || abits > DEFLATE_MAX_SIZE))) { - option_error("deflate option values must be 0 or %d .. %d", - DEFLATE_MIN_SIZE, DEFLATE_MAX_SIZE); - return 0; - } - if (rbits == DEFLATE_MIN_SIZE || abits == DEFLATE_MIN_SIZE) { - if (rbits == DEFLATE_MIN_SIZE) - rbits = DEFLATE_MIN_WORKS; - if (abits == DEFLATE_MIN_SIZE) - abits = DEFLATE_MIN_WORKS; - warn("deflate option value of %d changed to %d to avoid zlib bug", - DEFLATE_MIN_SIZE, DEFLATE_MIN_WORKS); - } - if (rbits > 0) { - ccp_wantoptions[0].deflate = 1; - ccp_wantoptions[0].deflate_size = rbits; - } else - ccp_wantoptions[0].deflate = 0; - if (abits > 0) { - ccp_allowoptions[0].deflate = 1; - ccp_allowoptions[0].deflate_size = abits; - } else - ccp_allowoptions[0].deflate = 0; - slprintf(deflate_value, sizeof(deflate_value), - rbits == abits? "%d": "%d,%d", rbits, abits); - - return 1; -} - -/* - * ccp_init - initialize CCP. - */ -static void -ccp_init(unit) - int unit; -{ - fsm *f = &ccp_fsm[unit]; - - f->unit = unit; - f->protocol = PPP_CCP; - f->callbacks = &ccp_callbacks; - fsm_init(f); - - memset(&ccp_wantoptions[unit], 0, sizeof(ccp_options)); - memset(&ccp_gotoptions[unit], 0, sizeof(ccp_options)); - memset(&ccp_allowoptions[unit], 0, sizeof(ccp_options)); - memset(&ccp_hisoptions[unit], 0, sizeof(ccp_options)); - - ccp_wantoptions[0].deflate = 1; - ccp_wantoptions[0].deflate_size = DEFLATE_MAX_SIZE; - ccp_wantoptions[0].deflate_correct = 1; - ccp_wantoptions[0].deflate_draft = 1; - ccp_allowoptions[0].deflate = 1; - ccp_allowoptions[0].deflate_size = DEFLATE_MAX_SIZE; - ccp_allowoptions[0].deflate_correct = 1; - ccp_allowoptions[0].deflate_draft = 1; - - ccp_wantoptions[0].bsd_compress = 1; - ccp_wantoptions[0].bsd_bits = BSD_MAX_BITS; - ccp_allowoptions[0].bsd_compress = 1; - ccp_allowoptions[0].bsd_bits = BSD_MAX_BITS; - - ccp_allowoptions[0].predictor_1 = 1; -} - -/* - * ccp_open - CCP is allowed to come up. - */ -static void -ccp_open(unit) - int unit; -{ - fsm *f = &ccp_fsm[unit]; - - if (f->state != OPENED) - ccp_flags_set(unit, 1, 0); - - /* - * Find out which compressors the kernel supports before - * deciding whether to open in silent mode. - */ - ccp_resetci(f); - if (!ANY_COMPRESS(ccp_gotoptions[unit])) - f->flags |= OPT_SILENT; - - fsm_open(f); -} - -/* - * ccp_close - Terminate CCP. - */ -static void -ccp_close(unit, reason) - int unit; - char *reason; -{ - ccp_flags_set(unit, 0, 0); - fsm_close(&ccp_fsm[unit], reason); -} - -/* - * ccp_lowerup - we may now transmit CCP packets. - */ -static void -ccp_lowerup(unit) - int unit; -{ - fsm_lowerup(&ccp_fsm[unit]); -} - -/* - * ccp_lowerdown - we may not transmit CCP packets. - */ -static void -ccp_lowerdown(unit) - int unit; -{ - fsm_lowerdown(&ccp_fsm[unit]); -} - -/* - * ccp_input - process a received CCP packet. - */ -static void -ccp_input(unit, p, len) - int unit; - u_char *p; - int len; -{ - fsm *f = &ccp_fsm[unit]; - int oldstate; - - /* - * Check for a terminate-request so we can print a message. - */ - oldstate = f->state; - fsm_input(f, p, len); - if (oldstate == OPENED && p[0] == TERMREQ && f->state != OPENED) - notice("Compression disabled by peer."); - - /* - * If we get a terminate-ack and we're not asking for compression, - * close CCP. - */ - if (oldstate == REQSENT && p[0] == TERMACK - && !ANY_COMPRESS(ccp_gotoptions[unit])) - ccp_close(unit, "No compression negotiated"); -} - -/* - * Handle a CCP-specific code. - */ -static int -ccp_extcode(f, code, id, p, len) - fsm *f; - int code, id; - u_char *p; - int len; -{ - switch (code) { - case CCP_RESETREQ: - if (f->state != OPENED) - break; - /* send a reset-ack, which the transmitter will see and - reset its compression state. */ - fsm_sdata(f, CCP_RESETACK, id, NULL, 0); - break; - - case CCP_RESETACK: - if (ccp_localstate[f->unit] & RACK_PENDING && id == f->reqid) { - ccp_localstate[f->unit] &= ~(RACK_PENDING | RREQ_REPEAT); - UNTIMEOUT(ccp_rack_timeout, f); - } - break; - - default: - return 0; - } - - return 1; -} - -/* - * ccp_protrej - peer doesn't talk CCP. - */ -static void -ccp_protrej(unit) - int unit; -{ - ccp_flags_set(unit, 0, 0); - fsm_lowerdown(&ccp_fsm[unit]); -} - -/* - * ccp_resetci - initialize at start of negotiation. - */ -static void -ccp_resetci(f) - fsm *f; -{ - ccp_options *go = &ccp_gotoptions[f->unit]; - u_char opt_buf[16]; - - *go = ccp_wantoptions[f->unit]; - all_rejected[f->unit] = 0; - - /* - * Check whether the kernel knows about the various - * compression methods we might request. - */ - if (go->bsd_compress) { - opt_buf[0] = CI_BSD_COMPRESS; - opt_buf[1] = CILEN_BSD_COMPRESS; - opt_buf[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, BSD_MIN_BITS); - if (ccp_test(f->unit, opt_buf, CILEN_BSD_COMPRESS, 0) <= 0) - go->bsd_compress = 0; - } - if (go->deflate) { - if (go->deflate_correct) { - opt_buf[0] = CI_DEFLATE; - opt_buf[1] = CILEN_DEFLATE; - opt_buf[2] = DEFLATE_MAKE_OPT(DEFLATE_MIN_WORKS); - opt_buf[3] = DEFLATE_CHK_SEQUENCE; - if (ccp_test(f->unit, opt_buf, CILEN_DEFLATE, 0) <= 0) - go->deflate_correct = 0; - } - if (go->deflate_draft) { - opt_buf[0] = CI_DEFLATE_DRAFT; - opt_buf[1] = CILEN_DEFLATE; - opt_buf[2] = DEFLATE_MAKE_OPT(DEFLATE_MIN_WORKS); - opt_buf[3] = DEFLATE_CHK_SEQUENCE; - if (ccp_test(f->unit, opt_buf, CILEN_DEFLATE, 0) <= 0) - go->deflate_draft = 0; - } - if (!go->deflate_correct && !go->deflate_draft) - go->deflate = 0; - } - if (go->predictor_1) { - opt_buf[0] = CI_PREDICTOR_1; - opt_buf[1] = CILEN_PREDICTOR_1; - if (ccp_test(f->unit, opt_buf, CILEN_PREDICTOR_1, 0) <= 0) - go->predictor_1 = 0; - } - if (go->predictor_2) { - opt_buf[0] = CI_PREDICTOR_2; - opt_buf[1] = CILEN_PREDICTOR_2; - if (ccp_test(f->unit, opt_buf, CILEN_PREDICTOR_2, 0) <= 0) - go->predictor_2 = 0; - } -} - -/* - * ccp_cilen - Return total length of our configuration info. - */ -static int -ccp_cilen(f) - fsm *f; -{ - ccp_options *go = &ccp_gotoptions[f->unit]; - - return (go->bsd_compress? CILEN_BSD_COMPRESS: 0) - + (go->deflate? CILEN_DEFLATE: 0) - + (go->predictor_1? CILEN_PREDICTOR_1: 0) - + (go->predictor_2? CILEN_PREDICTOR_2: 0); -} - -/* - * ccp_addci - put our requests in a packet. - */ -static void -ccp_addci(f, p, lenp) - fsm *f; - u_char *p; - int *lenp; -{ - int res; - ccp_options *go = &ccp_gotoptions[f->unit]; - u_char *p0 = p; - - /* - * Add the compression types that we can receive, in decreasing - * preference order. Get the kernel to allocate the first one - * in case it gets Acked. - */ - if (go->deflate) { - p[0] = go->deflate_correct? CI_DEFLATE: CI_DEFLATE_DRAFT; - p[1] = CILEN_DEFLATE; - p[2] = DEFLATE_MAKE_OPT(go->deflate_size); - p[3] = DEFLATE_CHK_SEQUENCE; - for (;;) { - res = ccp_test(f->unit, p, CILEN_DEFLATE, 0); - if (res > 0) { - p += CILEN_DEFLATE; - break; - } - if (res < 0 || go->deflate_size <= DEFLATE_MIN_WORKS) { - go->deflate = 0; - break; - } - --go->deflate_size; - p[2] = DEFLATE_MAKE_OPT(go->deflate_size); - } - if (p != p0 && go->deflate_correct && go->deflate_draft) { - p[0] = CI_DEFLATE_DRAFT; - p[1] = CILEN_DEFLATE; - p[2] = p[2 - CILEN_DEFLATE]; - p[3] = DEFLATE_CHK_SEQUENCE; - p += CILEN_DEFLATE; - } - } - if (go->bsd_compress) { - p[0] = CI_BSD_COMPRESS; - p[1] = CILEN_BSD_COMPRESS; - p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits); - if (p != p0) { - p += CILEN_BSD_COMPRESS; /* not the first option */ - } else { - for (;;) { - res = ccp_test(f->unit, p, CILEN_BSD_COMPRESS, 0); - if (res > 0) { - p += CILEN_BSD_COMPRESS; - break; - } - if (res < 0 || go->bsd_bits <= BSD_MIN_BITS) { - go->bsd_compress = 0; - break; - } - --go->bsd_bits; - p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits); - } - } - } - /* XXX Should Predictor 2 be preferable to Predictor 1? */ - if (go->predictor_1) { - p[0] = CI_PREDICTOR_1; - p[1] = CILEN_PREDICTOR_1; - if (p == p0 && ccp_test(f->unit, p, CILEN_PREDICTOR_1, 0) <= 0) { - go->predictor_1 = 0; - } else { - p += CILEN_PREDICTOR_1; - } - } - if (go->predictor_2) { - p[0] = CI_PREDICTOR_2; - p[1] = CILEN_PREDICTOR_2; - if (p == p0 && ccp_test(f->unit, p, CILEN_PREDICTOR_2, 0) <= 0) { - go->predictor_2 = 0; - } else { - p += CILEN_PREDICTOR_2; - } - } - - go->method = (p > p0)? p0[0]: -1; - - *lenp = p - p0; -} - -/* - * ccp_ackci - process a received configure-ack, and return - * 1 iff the packet was OK. - */ -static int -ccp_ackci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ccp_options *go = &ccp_gotoptions[f->unit]; - u_char *p0 = p; - - if (go->deflate) { - if (len < CILEN_DEFLATE - || p[0] != (go->deflate_correct? CI_DEFLATE: CI_DEFLATE_DRAFT) - || p[1] != CILEN_DEFLATE - || p[2] != DEFLATE_MAKE_OPT(go->deflate_size) - || p[3] != DEFLATE_CHK_SEQUENCE) - return 0; - p += CILEN_DEFLATE; - len -= CILEN_DEFLATE; - /* XXX Cope with first/fast ack */ - if (len == 0) - return 1; - if (go->deflate_correct && go->deflate_draft) { - if (len < CILEN_DEFLATE - || p[0] != CI_DEFLATE_DRAFT - || p[1] != CILEN_DEFLATE - || p[2] != DEFLATE_MAKE_OPT(go->deflate_size) - || p[3] != DEFLATE_CHK_SEQUENCE) - return 0; - p += CILEN_DEFLATE; - len -= CILEN_DEFLATE; - } - } - if (go->bsd_compress) { - if (len < CILEN_BSD_COMPRESS - || p[0] != CI_BSD_COMPRESS || p[1] != CILEN_BSD_COMPRESS - || p[2] != BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits)) - return 0; - p += CILEN_BSD_COMPRESS; - len -= CILEN_BSD_COMPRESS; - /* XXX Cope with first/fast ack */ - if (p == p0 && len == 0) - return 1; - } - if (go->predictor_1) { - if (len < CILEN_PREDICTOR_1 - || p[0] != CI_PREDICTOR_1 || p[1] != CILEN_PREDICTOR_1) - return 0; - p += CILEN_PREDICTOR_1; - len -= CILEN_PREDICTOR_1; - /* XXX Cope with first/fast ack */ - if (p == p0 && len == 0) - return 1; - } - if (go->predictor_2) { - if (len < CILEN_PREDICTOR_2 - || p[0] != CI_PREDICTOR_2 || p[1] != CILEN_PREDICTOR_2) - return 0; - p += CILEN_PREDICTOR_2; - len -= CILEN_PREDICTOR_2; - /* XXX Cope with first/fast ack */ - if (p == p0 && len == 0) - return 1; - } - - if (len != 0) - return 0; - return 1; -} - -/* - * ccp_nakci - process received configure-nak. - * Returns 1 iff the nak was OK. - */ -static int -ccp_nakci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ccp_options *go = &ccp_gotoptions[f->unit]; - ccp_options no; /* options we've seen already */ - ccp_options try; /* options to ask for next time */ - - memset(&no, 0, sizeof(no)); - try = *go; - - if (go->deflate && len >= CILEN_DEFLATE - && p[0] == (go->deflate_correct? CI_DEFLATE: CI_DEFLATE_DRAFT) - && p[1] == CILEN_DEFLATE) { - no.deflate = 1; - /* - * Peer wants us to use a different code size or something. - * Stop asking for Deflate if we don't understand his suggestion. - */ - if (DEFLATE_METHOD(p[2]) != DEFLATE_METHOD_VAL - || DEFLATE_SIZE(p[2]) < DEFLATE_MIN_WORKS - || p[3] != DEFLATE_CHK_SEQUENCE) - try.deflate = 0; - else if (DEFLATE_SIZE(p[2]) < go->deflate_size) - try.deflate_size = DEFLATE_SIZE(p[2]); - p += CILEN_DEFLATE; - len -= CILEN_DEFLATE; - if (go->deflate_correct && go->deflate_draft - && len >= CILEN_DEFLATE && p[0] == CI_DEFLATE_DRAFT - && p[1] == CILEN_DEFLATE) { - p += CILEN_DEFLATE; - len -= CILEN_DEFLATE; - } - } - - if (go->bsd_compress && len >= CILEN_BSD_COMPRESS - && p[0] == CI_BSD_COMPRESS && p[1] == CILEN_BSD_COMPRESS) { - no.bsd_compress = 1; - /* - * Peer wants us to use a different number of bits - * or a different version. - */ - if (BSD_VERSION(p[2]) != BSD_CURRENT_VERSION) - try.bsd_compress = 0; - else if (BSD_NBITS(p[2]) < go->bsd_bits) - try.bsd_bits = BSD_NBITS(p[2]); - p += CILEN_BSD_COMPRESS; - len -= CILEN_BSD_COMPRESS; - } - - /* - * Predictor-1 and 2 have no options, so they can't be Naked. - * - * There may be remaining options but we ignore them. - */ - - if (f->state != OPENED) - *go = try; - return 1; -} - -/* - * ccp_rejci - reject some of our suggested compression methods. - */ -static int -ccp_rejci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ccp_options *go = &ccp_gotoptions[f->unit]; - ccp_options try; /* options to request next time */ - - try = *go; - - /* - * Cope with empty configure-rejects by ceasing to send - * configure-requests. - */ - if (len == 0 && all_rejected[f->unit]) - return -1; - - if (go->deflate && len >= CILEN_DEFLATE - && p[0] == (go->deflate_correct? CI_DEFLATE: CI_DEFLATE_DRAFT) - && p[1] == CILEN_DEFLATE) { - if (p[2] != DEFLATE_MAKE_OPT(go->deflate_size) - || p[3] != DEFLATE_CHK_SEQUENCE) - return 0; /* Rej is bad */ - if (go->deflate_correct) - try.deflate_correct = 0; - else - try.deflate_draft = 0; - p += CILEN_DEFLATE; - len -= CILEN_DEFLATE; - if (go->deflate_correct && go->deflate_draft - && len >= CILEN_DEFLATE && p[0] == CI_DEFLATE_DRAFT - && p[1] == CILEN_DEFLATE) { - if (p[2] != DEFLATE_MAKE_OPT(go->deflate_size) - || p[3] != DEFLATE_CHK_SEQUENCE) - return 0; /* Rej is bad */ - try.deflate_draft = 0; - p += CILEN_DEFLATE; - len -= CILEN_DEFLATE; - } - if (!try.deflate_correct && !try.deflate_draft) - try.deflate = 0; - } - if (go->bsd_compress && len >= CILEN_BSD_COMPRESS - && p[0] == CI_BSD_COMPRESS && p[1] == CILEN_BSD_COMPRESS) { - if (p[2] != BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits)) - return 0; - try.bsd_compress = 0; - p += CILEN_BSD_COMPRESS; - len -= CILEN_BSD_COMPRESS; - } - if (go->predictor_1 && len >= CILEN_PREDICTOR_1 - && p[0] == CI_PREDICTOR_1 && p[1] == CILEN_PREDICTOR_1) { - try.predictor_1 = 0; - p += CILEN_PREDICTOR_1; - len -= CILEN_PREDICTOR_1; - } - if (go->predictor_2 && len >= CILEN_PREDICTOR_2 - && p[0] == CI_PREDICTOR_2 && p[1] == CILEN_PREDICTOR_2) { - try.predictor_2 = 0; - p += CILEN_PREDICTOR_2; - len -= CILEN_PREDICTOR_2; - } - - if (len != 0) - return 0; - - if (f->state != OPENED) - *go = try; - - return 1; -} - -/* - * ccp_reqci - processed a received configure-request. - * Returns CONFACK, CONFNAK or CONFREJ and the packet modified - * appropriately. - */ -static int -ccp_reqci(f, p, lenp, dont_nak) - fsm *f; - u_char *p; - int *lenp; - int dont_nak; -{ - int ret, newret, res; - u_char *p0, *retp; - int len, clen, type, nb; - ccp_options *ho = &ccp_hisoptions[f->unit]; - ccp_options *ao = &ccp_allowoptions[f->unit]; - - ret = CONFACK; - retp = p0 = p; - len = *lenp; - - memset(ho, 0, sizeof(ccp_options)); - ho->method = (len > 0)? p[0]: -1; - - while (len > 0) { - newret = CONFACK; - if (len < 2 || p[1] < 2 || p[1] > len) { - /* length is bad */ - clen = len; - newret = CONFREJ; - - } else { - type = p[0]; - clen = p[1]; - - switch (type) { - case CI_DEFLATE: - case CI_DEFLATE_DRAFT: - if (!ao->deflate || clen != CILEN_DEFLATE - || (!ao->deflate_correct && type == CI_DEFLATE) - || (!ao->deflate_draft && type == CI_DEFLATE_DRAFT)) { - newret = CONFREJ; - break; - } - - ho->deflate = 1; - ho->deflate_size = nb = DEFLATE_SIZE(p[2]); - if (DEFLATE_METHOD(p[2]) != DEFLATE_METHOD_VAL - || p[3] != DEFLATE_CHK_SEQUENCE - || nb > ao->deflate_size || nb < DEFLATE_MIN_WORKS) { - newret = CONFNAK; - if (!dont_nak) { - p[2] = DEFLATE_MAKE_OPT(ao->deflate_size); - p[3] = DEFLATE_CHK_SEQUENCE; - /* fall through to test this #bits below */ - } else - break; - } - - /* - * Check whether we can do Deflate with the window - * size they want. If the window is too big, reduce - * it until the kernel can cope and nak with that. - * We only check this for the first option. - */ - if (p == p0) { - for (;;) { - res = ccp_test(f->unit, p, CILEN_DEFLATE, 1); - if (res > 0) - break; /* it's OK now */ - if (res < 0 || nb == DEFLATE_MIN_WORKS || dont_nak) { - newret = CONFREJ; - p[2] = DEFLATE_MAKE_OPT(ho->deflate_size); - break; - } - newret = CONFNAK; - --nb; - p[2] = DEFLATE_MAKE_OPT(nb); - } - } - break; - - case CI_BSD_COMPRESS: - if (!ao->bsd_compress || clen != CILEN_BSD_COMPRESS) { - newret = CONFREJ; - break; - } - - ho->bsd_compress = 1; - ho->bsd_bits = nb = BSD_NBITS(p[2]); - if (BSD_VERSION(p[2]) != BSD_CURRENT_VERSION - || nb > ao->bsd_bits || nb < BSD_MIN_BITS) { - newret = CONFNAK; - if (!dont_nak) { - p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, ao->bsd_bits); - /* fall through to test this #bits below */ - } else - break; - } - - /* - * Check whether we can do BSD-Compress with the code - * size they want. If the code size is too big, reduce - * it until the kernel can cope and nak with that. - * We only check this for the first option. - */ - if (p == p0) { - for (;;) { - res = ccp_test(f->unit, p, CILEN_BSD_COMPRESS, 1); - if (res > 0) - break; - if (res < 0 || nb == BSD_MIN_BITS || dont_nak) { - newret = CONFREJ; - p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, - ho->bsd_bits); - break; - } - newret = CONFNAK; - --nb; - p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, nb); - } - } - break; - - case CI_PREDICTOR_1: - if (!ao->predictor_1 || clen != CILEN_PREDICTOR_1) { - newret = CONFREJ; - break; - } - - ho->predictor_1 = 1; - if (p == p0 - && ccp_test(f->unit, p, CILEN_PREDICTOR_1, 1) <= 0) { - newret = CONFREJ; - } - break; - - case CI_PREDICTOR_2: - if (!ao->predictor_2 || clen != CILEN_PREDICTOR_2) { - newret = CONFREJ; - break; - } - - ho->predictor_2 = 1; - if (p == p0 - && ccp_test(f->unit, p, CILEN_PREDICTOR_2, 1) <= 0) { - newret = CONFREJ; - } - break; - - default: - newret = CONFREJ; - } - } - - if (newret == CONFNAK && dont_nak) - newret = CONFREJ; - if (!(newret == CONFACK || (newret == CONFNAK && ret == CONFREJ))) { - /* we're returning this option */ - if (newret == CONFREJ && ret == CONFNAK) - retp = p0; - ret = newret; - if (p != retp) - BCOPY(p, retp, clen); - retp += clen; - } - - p += clen; - len -= clen; - } - - if (ret != CONFACK) { - if (ret == CONFREJ && *lenp == retp - p0) - all_rejected[f->unit] = 1; - else - *lenp = retp - p0; - } - return ret; -} - -/* - * Make a string name for a compression method (or 2). - */ -static char * -method_name(opt, opt2) - ccp_options *opt, *opt2; -{ - static char result[64]; - - if (!ANY_COMPRESS(*opt)) - return "(none)"; - switch (opt->method) { - case CI_DEFLATE: - case CI_DEFLATE_DRAFT: - if (opt2 != NULL && opt2->deflate_size != opt->deflate_size) - slprintf(result, sizeof(result), "Deflate%s (%d/%d)", - (opt->method == CI_DEFLATE_DRAFT? "(old#)": ""), - opt->deflate_size, opt2->deflate_size); - else - slprintf(result, sizeof(result), "Deflate%s (%d)", - (opt->method == CI_DEFLATE_DRAFT? "(old#)": ""), - opt->deflate_size); - break; - case CI_BSD_COMPRESS: - if (opt2 != NULL && opt2->bsd_bits != opt->bsd_bits) - slprintf(result, sizeof(result), "BSD-Compress (%d/%d)", - opt->bsd_bits, opt2->bsd_bits); - else - slprintf(result, sizeof(result), "BSD-Compress (%d)", - opt->bsd_bits); - break; - case CI_PREDICTOR_1: - return "Predictor 1"; - case CI_PREDICTOR_2: - return "Predictor 2"; - default: - slprintf(result, sizeof(result), "Method %d", opt->method); - } - return result; -} - -/* - * CCP has come up - inform the kernel driver and log a message. - */ -static void -ccp_up(f) - fsm *f; -{ - ccp_options *go = &ccp_gotoptions[f->unit]; - ccp_options *ho = &ccp_hisoptions[f->unit]; - char method1[64]; - - ccp_flags_set(f->unit, 1, 1); - if (ANY_COMPRESS(*go)) { - if (ANY_COMPRESS(*ho)) { - if (go->method == ho->method) { - notice("%s compression enabled", method_name(go, ho)); - } else { - strlcpy(method1, method_name(go, NULL), sizeof(method1)); - notice("%s / %s compression enabled", - method1, method_name(ho, NULL)); - } - } else - notice("%s receive compression enabled", method_name(go, NULL)); - } else if (ANY_COMPRESS(*ho)) - notice("%s transmit compression enabled", method_name(ho, NULL)); -} - -/* - * CCP has gone down - inform the kernel driver. - */ -static void -ccp_down(f) - fsm *f; -{ - if (ccp_localstate[f->unit] & RACK_PENDING) - UNTIMEOUT(ccp_rack_timeout, f); - ccp_localstate[f->unit] = 0; - ccp_flags_set(f->unit, 1, 0); -} - -/* - * Print the contents of a CCP packet. - */ -static char *ccp_codenames[] = { - "ConfReq", "ConfAck", "ConfNak", "ConfRej", - "TermReq", "TermAck", "CodeRej", - NULL, NULL, NULL, NULL, NULL, NULL, - "ResetReq", "ResetAck", -}; - -static int -ccp_printpkt(p, plen, printer, arg) - u_char *p; - int plen; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - u_char *p0, *optend; - int code, id, len; - int optlen; - - p0 = p; - if (plen < HEADERLEN) - return 0; - code = p[0]; - id = p[1]; - len = (p[2] << 8) + p[3]; - if (len < HEADERLEN || len > plen) - return 0; - - if (code >= 1 && code <= sizeof(ccp_codenames) / sizeof(char *) - && ccp_codenames[code-1] != NULL) - printer(arg, " %s", ccp_codenames[code-1]); - else - printer(arg, " code=0x%x", code); - printer(arg, " id=0x%x", id); - len -= HEADERLEN; - p += HEADERLEN; - - switch (code) { - case CONFREQ: - case CONFACK: - case CONFNAK: - case CONFREJ: - /* print list of possible compression methods */ - while (len >= 2) { - code = p[0]; - optlen = p[1]; - if (optlen < 2 || optlen > len) - break; - printer(arg, " <"); - len -= optlen; - optend = p + optlen; - switch (code) { - case CI_DEFLATE: - case CI_DEFLATE_DRAFT: - if (optlen >= CILEN_DEFLATE) { - printer(arg, "deflate%s %d", - (code == CI_DEFLATE_DRAFT? "(old#)": ""), - DEFLATE_SIZE(p[2])); - if (DEFLATE_METHOD(p[2]) != DEFLATE_METHOD_VAL) - printer(arg, " method %d", DEFLATE_METHOD(p[2])); - if (p[3] != DEFLATE_CHK_SEQUENCE) - printer(arg, " check %d", p[3]); - p += CILEN_DEFLATE; - } - break; - case CI_BSD_COMPRESS: - if (optlen >= CILEN_BSD_COMPRESS) { - printer(arg, "bsd v%d %d", BSD_VERSION(p[2]), - BSD_NBITS(p[2])); - p += CILEN_BSD_COMPRESS; - } - break; - case CI_PREDICTOR_1: - if (optlen >= CILEN_PREDICTOR_1) { - printer(arg, "predictor 1"); - p += CILEN_PREDICTOR_1; - } - break; - case CI_PREDICTOR_2: - if (optlen >= CILEN_PREDICTOR_2) { - printer(arg, "predictor 2"); - p += CILEN_PREDICTOR_2; - } - break; - } - while (p < optend) - printer(arg, " %.2x", *p++); - printer(arg, ">"); - } - break; - - case TERMACK: - case TERMREQ: - if (len > 0 && *p >= ' ' && *p < 0x7f) { - print_string((char *)p, len, printer, arg); - p += len; - len = 0; - } - break; - } - - /* dump out the rest of the packet in hex */ - while (--len >= 0) - printer(arg, " %.2x", *p++); - - return p - p0; -} - -/* - * We have received a packet that the decompressor failed to - * decompress. Here we would expect to issue a reset-request, but - * Motorola has a patent on resetting the compressor as a result of - * detecting an error in the decompressed data after decompression. - * (See US patent 5,130,993; international patent publication number - * WO 91/10289; Australian patent 73296/91.) - * - * So we ask the kernel whether the error was detected after - * decompression; if it was, we take CCP down, thus disabling - * compression :-(, otherwise we issue the reset-request. - */ -static void -ccp_datainput(unit, pkt, len) - int unit; - u_char *pkt; - int len; -{ - fsm *f; - - f = &ccp_fsm[unit]; - if (f->state == OPENED) { - if (ccp_fatal_error(unit)) { - /* - * Disable compression by taking CCP down. - */ - error("Lost compression sync: disabling compression"); - ccp_close(unit, "Lost compression sync"); - } else { - /* - * Send a reset-request to reset the peer's compressor. - * We don't do that if we are still waiting for an - * acknowledgement to a previous reset-request. - */ - if (!(ccp_localstate[f->unit] & RACK_PENDING)) { - fsm_sdata(f, CCP_RESETREQ, f->reqid = ++f->id, NULL, 0); - TIMEOUT(ccp_rack_timeout, f, RACKTIMEOUT); - ccp_localstate[f->unit] |= RACK_PENDING; - } else - ccp_localstate[f->unit] |= RREQ_REPEAT; - } - } -} - -/* - * Timeout waiting for reset-ack. - */ -static void -ccp_rack_timeout(arg) - void *arg; -{ - fsm *f = arg; - - if (f->state == OPENED && ccp_localstate[f->unit] & RREQ_REPEAT) { - fsm_sdata(f, CCP_RESETREQ, f->reqid, NULL, 0); - TIMEOUT(ccp_rack_timeout, f, RACKTIMEOUT); - ccp_localstate[f->unit] &= ~RREQ_REPEAT; - } else - ccp_localstate[f->unit] &= ~RACK_PENDING; -} - diff --git a/mdk-stage1/ppp/pppd/ccp.h b/mdk-stage1/ppp/pppd/ccp.h deleted file mode 100644 index 609d858c5..000000000 --- a/mdk-stage1/ppp/pppd/ccp.h +++ /dev/null @@ -1,48 +0,0 @@ -/* - * ccp.h - Definitions for PPP Compression Control Protocol. - * - * Copyright (c) 1994 The Australian National University. - * All rights reserved. - * - * Permission to use, copy, modify, and distribute this software and its - * documentation is hereby granted, provided that the above copyright - * notice appears in all copies. This software is provided without any - * warranty, express or implied. The Australian National University - * makes no representations about the suitability of this software for - * any purpose. - * - * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY - * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF - * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGE. - * - * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO - * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, - * OR MODIFICATIONS. - * - * $Id$ - */ - -typedef struct ccp_options { - bool bsd_compress; /* do BSD Compress? */ - bool deflate; /* do Deflate? */ - bool predictor_1; /* do Predictor-1? */ - bool predictor_2; /* do Predictor-2? */ - bool deflate_correct; /* use correct code for deflate? */ - bool deflate_draft; /* use draft RFC code for deflate? */ - u_short bsd_bits; /* # bits/code for BSD Compress */ - u_short deflate_size; /* lg(window size) for Deflate */ - short method; /* code for chosen compression method */ -} ccp_options; - -extern fsm ccp_fsm[]; -extern ccp_options ccp_wantoptions[]; -extern ccp_options ccp_gotoptions[]; -extern ccp_options ccp_allowoptions[]; -extern ccp_options ccp_hisoptions[]; - -extern struct protent ccp_protent; diff --git a/mdk-stage1/ppp/pppd/chap.c b/mdk-stage1/ppp/pppd/chap.c deleted file mode 100644 index 54c0e0095..000000000 --- a/mdk-stage1/ppp/pppd/chap.c +++ /dev/null @@ -1,860 +0,0 @@ -/* - * chap.c - Challenge Handshake Authentication Protocol. - * - * Copyright (c) 1993 The Australian National University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the Australian National University. The name of the University - * may not be used to endorse or promote products derived from this - * software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * Copyright (c) 1991 Gregory M. Christy. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Gregory M. Christy. The name of the author may not be used to - * endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -/* - * TODO: - */ - -#include <stdio.h> -#include <string.h> -#include <sys/types.h> -#include <sys/time.h> - -#include "pppd.h" -#include "chap.h" -#include "md5.h" -#ifdef CHAPMS -#include "chap_ms.h" -#endif - -static const char rcsid[] = RCSID; - -/* - * Command-line options. - */ -static option_t chap_option_list[] = { - { "chap-restart", o_int, &chap[0].timeouttime, - "Set timeout for CHAP", OPT_PRIO }, - { "chap-max-challenge", o_int, &chap[0].max_transmits, - "Set max #xmits for challenge", OPT_PRIO }, - { "chap-interval", o_int, &chap[0].chal_interval, - "Set interval for rechallenge", OPT_PRIO }, -#ifdef MSLANMAN - { "ms-lanman", o_bool, &ms_lanman, - "Use LanMan passwd when using MS-CHAP", 1 }, -#endif - { NULL } -}; - -/* - * Protocol entry points. - */ -static void ChapInit __P((int)); -static void ChapLowerUp __P((int)); -static void ChapLowerDown __P((int)); -static void ChapInput __P((int, u_char *, int)); -static void ChapProtocolReject __P((int)); -static int ChapPrintPkt __P((u_char *, int, - void (*) __P((void *, char *, ...)), void *)); - -struct protent chap_protent = { - PPP_CHAP, - ChapInit, - ChapInput, - ChapProtocolReject, - ChapLowerUp, - ChapLowerDown, - NULL, - NULL, - ChapPrintPkt, - NULL, - 1, - "CHAP", - NULL, - chap_option_list, - NULL, - NULL, - NULL -}; - -chap_state chap[NUM_PPP]; /* CHAP state; one for each unit */ - -static void ChapChallengeTimeout __P((void *)); -static void ChapResponseTimeout __P((void *)); -static void ChapReceiveChallenge __P((chap_state *, u_char *, int, int)); -static void ChapRechallenge __P((void *)); -static void ChapReceiveResponse __P((chap_state *, u_char *, int, int)); -static void ChapReceiveSuccess __P((chap_state *, u_char *, int, int)); -static void ChapReceiveFailure __P((chap_state *, u_char *, int, int)); -static void ChapSendStatus __P((chap_state *, int)); -static void ChapSendChallenge __P((chap_state *)); -static void ChapSendResponse __P((chap_state *)); -static void ChapGenChallenge __P((chap_state *)); - -extern double drand48 __P((void)); -extern void srand48 __P((long)); - -/* - * ChapInit - Initialize a CHAP unit. - */ -static void -ChapInit(unit) - int unit; -{ - chap_state *cstate = &chap[unit]; - - BZERO(cstate, sizeof(*cstate)); - cstate->unit = unit; - cstate->clientstate = CHAPCS_INITIAL; - cstate->serverstate = CHAPSS_INITIAL; - cstate->timeouttime = CHAP_DEFTIMEOUT; - cstate->max_transmits = CHAP_DEFTRANSMITS; - /* random number generator is initialized in magic_init */ -} - - -/* - * ChapAuthWithPeer - Authenticate us with our peer (start client). - * - */ -void -ChapAuthWithPeer(unit, our_name, digest) - int unit; - char *our_name; - int digest; -{ - chap_state *cstate = &chap[unit]; - - cstate->resp_name = our_name; - cstate->resp_type = digest; - - if (cstate->clientstate == CHAPCS_INITIAL || - cstate->clientstate == CHAPCS_PENDING) { - /* lower layer isn't up - wait until later */ - cstate->clientstate = CHAPCS_PENDING; - return; - } - - /* - * We get here as a result of LCP coming up. - * So even if CHAP was open before, we will - * have to re-authenticate ourselves. - */ - cstate->clientstate = CHAPCS_LISTEN; -} - - -/* - * ChapAuthPeer - Authenticate our peer (start server). - */ -void -ChapAuthPeer(unit, our_name, digest) - int unit; - char *our_name; - int digest; -{ - chap_state *cstate = &chap[unit]; - - cstate->chal_name = our_name; - cstate->chal_type = digest; - - if (cstate->serverstate == CHAPSS_INITIAL || - cstate->serverstate == CHAPSS_PENDING) { - /* lower layer isn't up - wait until later */ - cstate->serverstate = CHAPSS_PENDING; - return; - } - - ChapGenChallenge(cstate); - ChapSendChallenge(cstate); /* crank it up dude! */ - cstate->serverstate = CHAPSS_INITIAL_CHAL; -} - - -/* - * ChapChallengeTimeout - Timeout expired on sending challenge. - */ -static void -ChapChallengeTimeout(arg) - void *arg; -{ - chap_state *cstate = (chap_state *) arg; - - /* if we aren't sending challenges, don't worry. then again we */ - /* probably shouldn't be here either */ - if (cstate->serverstate != CHAPSS_INITIAL_CHAL && - cstate->serverstate != CHAPSS_RECHALLENGE) - return; - - if (cstate->chal_transmits >= cstate->max_transmits) { - /* give up on peer */ - error("Peer failed to respond to CHAP challenge"); - cstate->serverstate = CHAPSS_BADAUTH; - auth_peer_fail(cstate->unit, PPP_CHAP); - return; - } - - ChapSendChallenge(cstate); /* Re-send challenge */ -} - - -/* - * ChapResponseTimeout - Timeout expired on sending response. - */ -static void -ChapResponseTimeout(arg) - void *arg; -{ - chap_state *cstate = (chap_state *) arg; - - /* if we aren't sending a response, don't worry. */ - if (cstate->clientstate != CHAPCS_RESPONSE) - return; - - ChapSendResponse(cstate); /* re-send response */ -} - - -/* - * ChapRechallenge - Time to challenge the peer again. - */ -static void -ChapRechallenge(arg) - void *arg; -{ - chap_state *cstate = (chap_state *) arg; - - /* if we aren't sending a response, don't worry. */ - if (cstate->serverstate != CHAPSS_OPEN) - return; - - ChapGenChallenge(cstate); - ChapSendChallenge(cstate); - cstate->serverstate = CHAPSS_RECHALLENGE; -} - - -/* - * ChapLowerUp - The lower layer is up. - * - * Start up if we have pending requests. - */ -static void -ChapLowerUp(unit) - int unit; -{ - chap_state *cstate = &chap[unit]; - - if (cstate->clientstate == CHAPCS_INITIAL) - cstate->clientstate = CHAPCS_CLOSED; - else if (cstate->clientstate == CHAPCS_PENDING) - cstate->clientstate = CHAPCS_LISTEN; - - if (cstate->serverstate == CHAPSS_INITIAL) - cstate->serverstate = CHAPSS_CLOSED; - else if (cstate->serverstate == CHAPSS_PENDING) { - ChapGenChallenge(cstate); - ChapSendChallenge(cstate); - cstate->serverstate = CHAPSS_INITIAL_CHAL; - } -} - - -/* - * ChapLowerDown - The lower layer is down. - * - * Cancel all timeouts. - */ -static void -ChapLowerDown(unit) - int unit; -{ - chap_state *cstate = &chap[unit]; - - /* Timeout(s) pending? Cancel if so. */ - if (cstate->serverstate == CHAPSS_INITIAL_CHAL || - cstate->serverstate == CHAPSS_RECHALLENGE) - UNTIMEOUT(ChapChallengeTimeout, cstate); - else if (cstate->serverstate == CHAPSS_OPEN - && cstate->chal_interval != 0) - UNTIMEOUT(ChapRechallenge, cstate); - if (cstate->clientstate == CHAPCS_RESPONSE) - UNTIMEOUT(ChapResponseTimeout, cstate); - - cstate->clientstate = CHAPCS_INITIAL; - cstate->serverstate = CHAPSS_INITIAL; -} - - -/* - * ChapProtocolReject - Peer doesn't grok CHAP. - */ -static void -ChapProtocolReject(unit) - int unit; -{ - chap_state *cstate = &chap[unit]; - - if (cstate->serverstate != CHAPSS_INITIAL && - cstate->serverstate != CHAPSS_CLOSED) - auth_peer_fail(unit, PPP_CHAP); - if (cstate->clientstate != CHAPCS_INITIAL && - cstate->clientstate != CHAPCS_CLOSED) - auth_withpeer_fail(unit, PPP_CHAP); - ChapLowerDown(unit); /* shutdown chap */ -} - - -/* - * ChapInput - Input CHAP packet. - */ -static void -ChapInput(unit, inpacket, packet_len) - int unit; - u_char *inpacket; - int packet_len; -{ - chap_state *cstate = &chap[unit]; - u_char *inp; - u_char code, id; - int len; - - /* - * Parse header (code, id and length). - * If packet too short, drop it. - */ - inp = inpacket; - if (packet_len < CHAP_HEADERLEN) { - CHAPDEBUG(("ChapInput: rcvd short header.")); - return; - } - GETCHAR(code, inp); - GETCHAR(id, inp); - GETSHORT(len, inp); - if (len < CHAP_HEADERLEN) { - CHAPDEBUG(("ChapInput: rcvd illegal length.")); - return; - } - if (len > packet_len) { - CHAPDEBUG(("ChapInput: rcvd short packet.")); - return; - } - len -= CHAP_HEADERLEN; - - /* - * Action depends on code (as in fact it usually does :-). - */ - switch (code) { - case CHAP_CHALLENGE: - ChapReceiveChallenge(cstate, inp, id, len); - break; - - case CHAP_RESPONSE: - ChapReceiveResponse(cstate, inp, id, len); - break; - - case CHAP_FAILURE: - ChapReceiveFailure(cstate, inp, id, len); - break; - - case CHAP_SUCCESS: - ChapReceiveSuccess(cstate, inp, id, len); - break; - - default: /* Need code reject? */ - warn("Unknown CHAP code (%d) received.", code); - break; - } -} - - -/* - * ChapReceiveChallenge - Receive Challenge and send Response. - */ -static void -ChapReceiveChallenge(cstate, inp, id, len) - chap_state *cstate; - u_char *inp; - int id; - int len; -{ - int rchallenge_len; - u_char *rchallenge; - int secret_len; - char secret[MAXSECRETLEN]; - char rhostname[256]; - MD5_CTX mdContext; - u_char hash[MD5_SIGNATURE_SIZE]; - - if (cstate->clientstate == CHAPCS_CLOSED || - cstate->clientstate == CHAPCS_PENDING) { - CHAPDEBUG(("ChapReceiveChallenge: in state %d", cstate->clientstate)); - return; - } - - if (len < 2) { - CHAPDEBUG(("ChapReceiveChallenge: rcvd short packet.")); - return; - } - - GETCHAR(rchallenge_len, inp); - len -= sizeof (u_char) + rchallenge_len; /* now name field length */ - if (len < 0) { - CHAPDEBUG(("ChapReceiveChallenge: rcvd short packet.")); - return; - } - rchallenge = inp; - INCPTR(rchallenge_len, inp); - - if (len >= sizeof(rhostname)) - len = sizeof(rhostname) - 1; - BCOPY(inp, rhostname, len); - rhostname[len] = '\000'; - - /* Microsoft doesn't send their name back in the PPP packet */ - if (explicit_remote || (remote_name[0] != 0 && rhostname[0] == 0)) { - strlcpy(rhostname, remote_name, sizeof(rhostname)); - CHAPDEBUG(("ChapReceiveChallenge: using '%q' as remote name", - rhostname)); - } - - /* get secret for authenticating ourselves with the specified host */ - if (!get_secret(cstate->unit, cstate->resp_name, rhostname, - secret, &secret_len, 0)) { - secret_len = 0; /* assume null secret if can't find one */ - warn("No CHAP secret found for authenticating us to %q", rhostname); - } - - /* cancel response send timeout if necessary */ - if (cstate->clientstate == CHAPCS_RESPONSE) - UNTIMEOUT(ChapResponseTimeout, cstate); - - cstate->resp_id = id; - cstate->resp_transmits = 0; - - /* generate MD based on negotiated type */ - switch (cstate->resp_type) { - - case CHAP_DIGEST_MD5: - MD5Init(&mdContext); - MD5Update(&mdContext, &cstate->resp_id, 1); - MD5Update(&mdContext, secret, secret_len); - MD5Update(&mdContext, rchallenge, rchallenge_len); - MD5Final(hash, &mdContext); - BCOPY(hash, cstate->response, MD5_SIGNATURE_SIZE); - cstate->resp_length = MD5_SIGNATURE_SIZE; - break; - -#ifdef CHAPMS - case CHAP_MICROSOFT: - ChapMS(cstate, rchallenge, rchallenge_len, secret, secret_len); - break; -#endif - - default: - CHAPDEBUG(("unknown digest type %d", cstate->resp_type)); - return; - } - - BZERO(secret, sizeof(secret)); - ChapSendResponse(cstate); -} - - -/* - * ChapReceiveResponse - Receive and process response. - */ -static void -ChapReceiveResponse(cstate, inp, id, len) - chap_state *cstate; - u_char *inp; - int id; - int len; -{ - u_char *remmd, remmd_len; - int secret_len, old_state; - int code; - char rhostname[256]; - MD5_CTX mdContext; - char secret[MAXSECRETLEN]; - u_char hash[MD5_SIGNATURE_SIZE]; - - if (cstate->serverstate == CHAPSS_CLOSED || - cstate->serverstate == CHAPSS_PENDING) { - CHAPDEBUG(("ChapReceiveResponse: in state %d", cstate->serverstate)); - return; - } - - if (id != cstate->chal_id) - return; /* doesn't match ID of last challenge */ - - /* - * If we have received a duplicate or bogus Response, - * we have to send the same answer (Success/Failure) - * as we did for the first Response we saw. - */ - if (cstate->serverstate == CHAPSS_OPEN) { - ChapSendStatus(cstate, CHAP_SUCCESS); - return; - } - if (cstate->serverstate == CHAPSS_BADAUTH) { - ChapSendStatus(cstate, CHAP_FAILURE); - return; - } - - if (len < 2) { - CHAPDEBUG(("ChapReceiveResponse: rcvd short packet.")); - return; - } - GETCHAR(remmd_len, inp); /* get length of MD */ - remmd = inp; /* get pointer to MD */ - INCPTR(remmd_len, inp); - - len -= sizeof (u_char) + remmd_len; - if (len < 0) { - CHAPDEBUG(("ChapReceiveResponse: rcvd short packet.")); - return; - } - - UNTIMEOUT(ChapChallengeTimeout, cstate); - - if (len >= sizeof(rhostname)) - len = sizeof(rhostname) - 1; - BCOPY(inp, rhostname, len); - rhostname[len] = '\000'; - - /* - * Get secret for authenticating them with us, - * do the hash ourselves, and compare the result. - */ - code = CHAP_FAILURE; - if (!get_secret(cstate->unit, (explicit_remote? remote_name: rhostname), - cstate->chal_name, secret, &secret_len, 1)) { - warn("No CHAP secret found for authenticating %q", rhostname); - } else { - - /* generate MD based on negotiated type */ - switch (cstate->chal_type) { - - case CHAP_DIGEST_MD5: /* only MD5 is defined for now */ - if (remmd_len != MD5_SIGNATURE_SIZE) - break; /* it's not even the right length */ - MD5Init(&mdContext); - MD5Update(&mdContext, &cstate->chal_id, 1); - MD5Update(&mdContext, secret, secret_len); - MD5Update(&mdContext, cstate->challenge, cstate->chal_len); - MD5Final(hash, &mdContext); - - /* compare local and remote MDs and send the appropriate status */ - if (memcmp (hash, remmd, MD5_SIGNATURE_SIZE) == 0) - code = CHAP_SUCCESS; /* they are the same! */ - break; - - default: - CHAPDEBUG(("unknown digest type %d", cstate->chal_type)); - } - } - - BZERO(secret, sizeof(secret)); - ChapSendStatus(cstate, code); - - if (code == CHAP_SUCCESS) { - old_state = cstate->serverstate; - cstate->serverstate = CHAPSS_OPEN; - if (old_state == CHAPSS_INITIAL_CHAL) { - auth_peer_success(cstate->unit, PPP_CHAP, rhostname, len); - } - if (cstate->chal_interval != 0) - TIMEOUT(ChapRechallenge, cstate, cstate->chal_interval); - notice("CHAP peer authentication succeeded for %q", rhostname); - - } else { - error("CHAP peer authentication failed for remote host %q", rhostname); - cstate->serverstate = CHAPSS_BADAUTH; - auth_peer_fail(cstate->unit, PPP_CHAP); - } -} - -/* - * ChapReceiveSuccess - Receive Success - */ -static void -ChapReceiveSuccess(cstate, inp, id, len) - chap_state *cstate; - u_char *inp; - u_char id; - int len; -{ - - if (cstate->clientstate == CHAPCS_OPEN) - /* presumably an answer to a duplicate response */ - return; - - if (cstate->clientstate != CHAPCS_RESPONSE) { - /* don't know what this is */ - CHAPDEBUG(("ChapReceiveSuccess: in state %d\n", cstate->clientstate)); - return; - } - - UNTIMEOUT(ChapResponseTimeout, cstate); - - /* - * Print message. - */ - if (len > 0) - PRINTMSG(inp, len); - - cstate->clientstate = CHAPCS_OPEN; - - auth_withpeer_success(cstate->unit, PPP_CHAP); -} - - -/* - * ChapReceiveFailure - Receive failure. - */ -static void -ChapReceiveFailure(cstate, inp, id, len) - chap_state *cstate; - u_char *inp; - u_char id; - int len; -{ - if (cstate->clientstate != CHAPCS_RESPONSE) { - /* don't know what this is */ - CHAPDEBUG(("ChapReceiveFailure: in state %d\n", cstate->clientstate)); - return; - } - - UNTIMEOUT(ChapResponseTimeout, cstate); - - /* - * Print message. - */ - if (len > 0) - PRINTMSG(inp, len); - - error("CHAP authentication failed"); - auth_withpeer_fail(cstate->unit, PPP_CHAP); -} - - -/* - * ChapSendChallenge - Send an Authenticate challenge. - */ -static void -ChapSendChallenge(cstate) - chap_state *cstate; -{ - u_char *outp; - int chal_len, name_len; - int outlen; - - chal_len = cstate->chal_len; - name_len = strlen(cstate->chal_name); - outlen = CHAP_HEADERLEN + sizeof (u_char) + chal_len + name_len; - outp = outpacket_buf; - - MAKEHEADER(outp, PPP_CHAP); /* paste in a CHAP header */ - - PUTCHAR(CHAP_CHALLENGE, outp); - PUTCHAR(cstate->chal_id, outp); - PUTSHORT(outlen, outp); - - PUTCHAR(chal_len, outp); /* put length of challenge */ - BCOPY(cstate->challenge, outp, chal_len); - INCPTR(chal_len, outp); - - BCOPY(cstate->chal_name, outp, name_len); /* append hostname */ - - output(cstate->unit, outpacket_buf, outlen + PPP_HDRLEN); - - TIMEOUT(ChapChallengeTimeout, cstate, cstate->timeouttime); - ++cstate->chal_transmits; -} - - -/* - * ChapSendStatus - Send a status response (ack or nak). - */ -static void -ChapSendStatus(cstate, code) - chap_state *cstate; - int code; -{ - u_char *outp; - int outlen, msglen; - char msg[256]; - - if (code == CHAP_SUCCESS) - slprintf(msg, sizeof(msg), "Welcome to %s.", hostname); - else - slprintf(msg, sizeof(msg), "I don't like you. Go 'way."); - msglen = strlen(msg); - - outlen = CHAP_HEADERLEN + msglen; - outp = outpacket_buf; - - MAKEHEADER(outp, PPP_CHAP); /* paste in a header */ - - PUTCHAR(code, outp); - PUTCHAR(cstate->chal_id, outp); - PUTSHORT(outlen, outp); - BCOPY(msg, outp, msglen); - output(cstate->unit, outpacket_buf, outlen + PPP_HDRLEN); -} - -/* - * ChapGenChallenge is used to generate a pseudo-random challenge string of - * a pseudo-random length between min_len and max_len. The challenge - * string and its length are stored in *cstate, and various other fields of - * *cstate are initialized. - */ - -static void -ChapGenChallenge(cstate) - chap_state *cstate; -{ - int chal_len; - u_char *ptr = cstate->challenge; - int i; - - /* pick a random challenge length between MIN_CHALLENGE_LENGTH and - MAX_CHALLENGE_LENGTH */ - chal_len = (unsigned) ((drand48() * - (MAX_CHALLENGE_LENGTH - MIN_CHALLENGE_LENGTH)) + - MIN_CHALLENGE_LENGTH); - cstate->chal_len = chal_len; - cstate->chal_id = ++cstate->id; - cstate->chal_transmits = 0; - - /* generate a random string */ - for (i = 0; i < chal_len; i++) - *ptr++ = (char) (drand48() * 0xff); -} - -/* - * ChapSendResponse - send a response packet with values as specified - * in *cstate. - */ -/* ARGSUSED */ -static void -ChapSendResponse(cstate) - chap_state *cstate; -{ - u_char *outp; - int outlen, md_len, name_len; - - md_len = cstate->resp_length; - name_len = strlen(cstate->resp_name); - outlen = CHAP_HEADERLEN + sizeof (u_char) + md_len + name_len; - outp = outpacket_buf; - - MAKEHEADER(outp, PPP_CHAP); - - PUTCHAR(CHAP_RESPONSE, outp); /* we are a response */ - PUTCHAR(cstate->resp_id, outp); /* copy id from challenge packet */ - PUTSHORT(outlen, outp); /* packet length */ - - PUTCHAR(md_len, outp); /* length of MD */ - BCOPY(cstate->response, outp, md_len); /* copy MD to buffer */ - INCPTR(md_len, outp); - - BCOPY(cstate->resp_name, outp, name_len); /* append our name */ - - /* send the packet */ - output(cstate->unit, outpacket_buf, outlen + PPP_HDRLEN); - - cstate->clientstate = CHAPCS_RESPONSE; - TIMEOUT(ChapResponseTimeout, cstate, cstate->timeouttime); - ++cstate->resp_transmits; -} - -/* - * ChapPrintPkt - print the contents of a CHAP packet. - */ -static char *ChapCodenames[] = { - "Challenge", "Response", "Success", "Failure" -}; - -static int -ChapPrintPkt(p, plen, printer, arg) - u_char *p; - int plen; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int code, id, len; - int clen, nlen; - u_char x; - - if (plen < CHAP_HEADERLEN) - return 0; - GETCHAR(code, p); - GETCHAR(id, p); - GETSHORT(len, p); - if (len < CHAP_HEADERLEN || len > plen) - return 0; - - if (code >= 1 && code <= sizeof(ChapCodenames) / sizeof(char *)) - printer(arg, " %s", ChapCodenames[code-1]); - else - printer(arg, " code=0x%x", code); - printer(arg, " id=0x%x", id); - len -= CHAP_HEADERLEN; - switch (code) { - case CHAP_CHALLENGE: - case CHAP_RESPONSE: - if (len < 1) - break; - clen = p[0]; - if (len < clen + 1) - break; - ++p; - nlen = len - clen - 1; - printer(arg, " <"); - for (; clen > 0; --clen) { - GETCHAR(x, p); - printer(arg, "%.2x", x); - } - printer(arg, ">, name = "); - print_string((char *)p, nlen, printer, arg); - break; - case CHAP_FAILURE: - case CHAP_SUCCESS: - printer(arg, " "); - print_string((char *)p, len, printer, arg); - break; - default: - for (clen = len; clen > 0; --clen) { - GETCHAR(x, p); - printer(arg, " %.2x", x); - } - } - - return len + CHAP_HEADERLEN; -} diff --git a/mdk-stage1/ppp/pppd/chap.h b/mdk-stage1/ppp/pppd/chap.h deleted file mode 100644 index 945d051d0..000000000 --- a/mdk-stage1/ppp/pppd/chap.h +++ /dev/null @@ -1,124 +0,0 @@ -/* - * chap.h - Challenge Handshake Authentication Protocol definitions. - * - * Copyright (c) 1993 The Australian National University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the Australian National University. The name of the University - * may not be used to endorse or promote products derived from this - * software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * Copyright (c) 1991 Gregory M. Christy - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the author. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -#ifndef __CHAP_INCLUDE__ - -/* Code + ID + length */ -#define CHAP_HEADERLEN 4 - -/* - * CHAP codes. - */ - -#define CHAP_DIGEST_MD5 5 /* use MD5 algorithm */ -#define MD5_SIGNATURE_SIZE 16 /* 16 bytes in a MD5 message digest */ -#define CHAP_MICROSOFT 0x80 /* use Microsoft-compatible alg. */ -#define MS_CHAP_RESPONSE_LEN 49 /* Response length for MS-CHAP */ - -#define CHAP_CHALLENGE 1 -#define CHAP_RESPONSE 2 -#define CHAP_SUCCESS 3 -#define CHAP_FAILURE 4 - -/* - * Challenge lengths (for challenges we send) and other limits. - */ -#define MIN_CHALLENGE_LENGTH 16 -#define MAX_CHALLENGE_LENGTH 24 -#define MAX_RESPONSE_LENGTH 64 /* sufficient for MD5 or MS-CHAP */ - -/* - * Each interface is described by a chap structure. - */ - -typedef struct chap_state { - int unit; /* Interface unit number */ - int clientstate; /* Client state */ - int serverstate; /* Server state */ - u_char challenge[MAX_CHALLENGE_LENGTH]; /* last challenge string sent */ - u_char chal_len; /* challenge length */ - u_char chal_id; /* ID of last challenge */ - u_char chal_type; /* hash algorithm for challenges */ - u_char id; /* Current id */ - char *chal_name; /* Our name to use with challenge */ - int chal_interval; /* Time until we challenge peer again */ - int timeouttime; /* Timeout time in seconds */ - int max_transmits; /* Maximum # of challenge transmissions */ - int chal_transmits; /* Number of transmissions of challenge */ - int resp_transmits; /* Number of transmissions of response */ - u_char response[MAX_RESPONSE_LENGTH]; /* Response to send */ - u_char resp_length; /* length of response */ - u_char resp_id; /* ID for response messages */ - u_char resp_type; /* hash algorithm for responses */ - char *resp_name; /* Our name to send with response */ -} chap_state; - - -/* - * Client (peer) states. - */ -#define CHAPCS_INITIAL 0 /* Lower layer down, not opened */ -#define CHAPCS_CLOSED 1 /* Lower layer up, not opened */ -#define CHAPCS_PENDING 2 /* Auth us to peer when lower up */ -#define CHAPCS_LISTEN 3 /* Listening for a challenge */ -#define CHAPCS_RESPONSE 4 /* Sent response, waiting for status */ -#define CHAPCS_OPEN 5 /* We've received Success */ - -/* - * Server (authenticator) states. - */ -#define CHAPSS_INITIAL 0 /* Lower layer down, not opened */ -#define CHAPSS_CLOSED 1 /* Lower layer up, not opened */ -#define CHAPSS_PENDING 2 /* Auth peer when lower up */ -#define CHAPSS_INITIAL_CHAL 3 /* We've sent the first challenge */ -#define CHAPSS_OPEN 4 /* We've sent a Success msg */ -#define CHAPSS_RECHALLENGE 5 /* We've sent another challenge */ -#define CHAPSS_BADAUTH 6 /* We've sent a Failure msg */ - -/* - * Timeouts. - */ -#define CHAP_DEFTIMEOUT 3 /* Timeout time in seconds */ -#define CHAP_DEFTRANSMITS 10 /* max # times to send challenge */ - -extern chap_state chap[]; - -void ChapAuthWithPeer __P((int, char *, int)); -void ChapAuthPeer __P((int, char *, int)); - -extern struct protent chap_protent; - -#define __CHAP_INCLUDE__ -#endif /* __CHAP_INCLUDE__ */ diff --git a/mdk-stage1/ppp/pppd/chap_ms.c b/mdk-stage1/ppp/pppd/chap_ms.c deleted file mode 100644 index 81a57bb5a..000000000 --- a/mdk-stage1/ppp/pppd/chap_ms.c +++ /dev/null @@ -1,338 +0,0 @@ -/* - * chap_ms.c - Microsoft MS-CHAP compatible implementation. - * - * Copyright (c) 1995 Eric Rosenquist, Strata Software Limited. - * http://www.strataware.com/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Eric Rosenquist. The name of the author may not be used to - * endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -/* - * Modifications by Lauri Pesonen / lpesonen@clinet.fi, april 1997 - * - * Implemented LANManager type password response to MS-CHAP challenges. - * Now pppd provides both NT style and LANMan style blocks, and the - * prefered is set by option "ms-lanman". Default is to use NT. - * The hash text (StdText) was taken from Win95 RASAPI32.DLL. - * - * You should also use DOMAIN\\USERNAME as described in README.MSCHAP80 - */ - -#define RCSID "$Id$" - -#ifdef CHAPMS - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <ctype.h> -#include <sys/types.h> -#include <sys/time.h> -#include <unistd.h> -#ifdef HAVE_CRYPT_H -#include <crypt.h> -#endif - -#include "pppd.h" -#include "chap.h" -#include "chap_ms.h" -#include "md4.h" - -#ifndef USE_CRYPT -#include <des.h> -#endif - -static const char rcsid[] = RCSID; - -typedef struct { - u_char LANManResp[24]; - u_char NTResp[24]; - u_char UseNT; /* If 1, ignore the LANMan response field */ -} MS_ChapResponse; -/* We use MS_CHAP_RESPONSE_LEN, rather than sizeof(MS_ChapResponse), - in case this struct gets padded. */ - - -static void ChallengeResponse __P((u_char *, u_char *, u_char *)); -static void DesEncrypt __P((u_char *, u_char *, u_char *)); -static void MakeKey __P((u_char *, u_char *)); -static u_char Get7Bits __P((u_char *, int)); -static void ChapMS_NT __P((char *, int, char *, int, MS_ChapResponse *)); -#ifdef MSLANMAN -static void ChapMS_LANMan __P((char *, int, char *, int, MS_ChapResponse *)); -#endif - -#ifdef USE_CRYPT -static void Expand __P((u_char *, u_char *)); -static void Collapse __P((u_char *, u_char *)); -#endif - -#ifdef MSLANMAN -bool ms_lanman = 0; /* Use LanMan password instead of NT */ - /* Has meaning only with MS-CHAP challenges */ -#endif - -static void -ChallengeResponse(challenge, pwHash, response) - u_char *challenge; /* IN 8 octets */ - u_char *pwHash; /* IN 16 octets */ - u_char *response; /* OUT 24 octets */ -{ - char ZPasswordHash[21]; - - BZERO(ZPasswordHash, sizeof(ZPasswordHash)); - BCOPY(pwHash, ZPasswordHash, MD4_SIGNATURE_SIZE); - -#if 0 - dbglog("ChallengeResponse - ZPasswordHash %.*B", - sizeof(ZPasswordHash), ZPasswordHash); -#endif - - DesEncrypt(challenge, ZPasswordHash + 0, response + 0); - DesEncrypt(challenge, ZPasswordHash + 7, response + 8); - DesEncrypt(challenge, ZPasswordHash + 14, response + 16); - -#if 0 - dbglog("ChallengeResponse - response %.24B", response); -#endif -} - - -#ifdef USE_CRYPT -static void -DesEncrypt(clear, key, cipher) - u_char *clear; /* IN 8 octets */ - u_char *key; /* IN 7 octets */ - u_char *cipher; /* OUT 8 octets */ -{ - u_char des_key[8]; - u_char crypt_key[66]; - u_char des_input[66]; - - MakeKey(key, des_key); - - Expand(des_key, crypt_key); - setkey(crypt_key); - -#if 0 - CHAPDEBUG((LOG_INFO, "DesEncrypt: 8 octet input : %.8B", clear)); -#endif - - Expand(clear, des_input); - encrypt(des_input, 0); - Collapse(des_input, cipher); - -#if 0 - CHAPDEBUG((LOG_INFO, "DesEncrypt: 8 octet output: %.8B", cipher)); -#endif -} - -#else /* USE_CRYPT */ - -static void -DesEncrypt(clear, key, cipher) - u_char *clear; /* IN 8 octets */ - u_char *key; /* IN 7 octets */ - u_char *cipher; /* OUT 8 octets */ -{ - des_cblock des_key; - des_key_schedule key_schedule; - - MakeKey(key, des_key); - - des_set_key(&des_key, key_schedule); - -#if 0 - CHAPDEBUG((LOG_INFO, "DesEncrypt: 8 octet input : %.8B", clear)); -#endif - - des_ecb_encrypt((des_cblock *)clear, (des_cblock *)cipher, key_schedule, 1); - -#if 0 - CHAPDEBUG((LOG_INFO, "DesEncrypt: 8 octet output: %.8B", cipher)); -#endif -} - -#endif /* USE_CRYPT */ - - -static u_char Get7Bits(input, startBit) - u_char *input; - int startBit; -{ - register unsigned int word; - - word = (unsigned)input[startBit / 8] << 8; - word |= (unsigned)input[startBit / 8 + 1]; - - word >>= 15 - (startBit % 8 + 7); - - return word & 0xFE; -} - -#ifdef USE_CRYPT - -/* in == 8-byte string (expanded version of the 56-bit key) - * out == 64-byte string where each byte is either 1 or 0 - * Note that the low-order "bit" is always ignored by by setkey() - */ -static void Expand(in, out) - u_char *in; - u_char *out; -{ - int j, c; - int i; - - for(i = 0; i < 64; in++){ - c = *in; - for(j = 7; j >= 0; j--) - *out++ = (c >> j) & 01; - i += 8; - } -} - -/* The inverse of Expand - */ -static void Collapse(in, out) - u_char *in; - u_char *out; -{ - int j; - int i; - unsigned int c; - - for (i = 0; i < 64; i += 8, out++) { - c = 0; - for (j = 7; j >= 0; j--, in++) - c |= *in << j; - *out = c & 0xff; - } -} -#endif - -static void MakeKey(key, des_key) - u_char *key; /* IN 56 bit DES key missing parity bits */ - u_char *des_key; /* OUT 64 bit DES key with parity bits added */ -{ - des_key[0] = Get7Bits(key, 0); - des_key[1] = Get7Bits(key, 7); - des_key[2] = Get7Bits(key, 14); - des_key[3] = Get7Bits(key, 21); - des_key[4] = Get7Bits(key, 28); - des_key[5] = Get7Bits(key, 35); - des_key[6] = Get7Bits(key, 42); - des_key[7] = Get7Bits(key, 49); - -#ifndef USE_CRYPT - des_set_odd_parity((des_cblock *)des_key); -#endif - -#if 0 - CHAPDEBUG((LOG_INFO, "MakeKey: 56-bit input : %.7B", key)); - CHAPDEBUG((LOG_INFO, "MakeKey: 64-bit output: %.8B", des_key)); -#endif -} - -static void -ChapMS_NT(rchallenge, rchallenge_len, secret, secret_len, response) - char *rchallenge; - int rchallenge_len; - char *secret; - int secret_len; - MS_ChapResponse *response; -{ - int i; -#ifdef __NetBSD__ - /* NetBSD uses the libc md4 routines which take bytes instead of bits */ - int mdlen = secret_len * 2; -#else - int mdlen = secret_len * 2 * 8; -#endif - MD4_CTX md4Context; - u_char hash[MD4_SIGNATURE_SIZE]; - u_char unicodePassword[MAX_NT_PASSWORD * 2]; - - /* Initialize the Unicode version of the secret (== password). */ - /* This implicitly supports 8-bit ISO8859/1 characters. */ - BZERO(unicodePassword, sizeof(unicodePassword)); - for (i = 0; i < secret_len; i++) - unicodePassword[i * 2] = (u_char)secret[i]; - - MD4Init(&md4Context); - MD4Update(&md4Context, unicodePassword, mdlen); - - MD4Final(hash, &md4Context); /* Tell MD4 we're done */ - - ChallengeResponse(rchallenge, hash, response->NTResp); -} - -#ifdef MSLANMAN -static u_char *StdText = (u_char *)"KGS!@#$%"; /* key from rasapi32.dll */ - -static void -ChapMS_LANMan(rchallenge, rchallenge_len, secret, secret_len, response) - char *rchallenge; - int rchallenge_len; - char *secret; - int secret_len; - MS_ChapResponse *response; -{ - int i; - u_char UcasePassword[MAX_NT_PASSWORD]; /* max is actually 14 */ - u_char PasswordHash[MD4_SIGNATURE_SIZE]; - - /* LANMan password is case insensitive */ - BZERO(UcasePassword, sizeof(UcasePassword)); - for (i = 0; i < secret_len; i++) - UcasePassword[i] = (u_char)toupper(secret[i]); - DesEncrypt( StdText, UcasePassword + 0, PasswordHash + 0 ); - DesEncrypt( StdText, UcasePassword + 7, PasswordHash + 8 ); - ChallengeResponse(rchallenge, PasswordHash, response->LANManResp); -} -#endif - -void -ChapMS(cstate, rchallenge, rchallenge_len, secret, secret_len) - chap_state *cstate; - char *rchallenge; - int rchallenge_len; - char *secret; - int secret_len; -{ - MS_ChapResponse response; - -#if 0 - CHAPDEBUG((LOG_INFO, "ChapMS: secret is '%.*s'", secret_len, secret)); -#endif - BZERO(&response, sizeof(response)); - - /* Calculate both always */ - ChapMS_NT(rchallenge, rchallenge_len, secret, secret_len, &response); - -#ifdef MSLANMAN - ChapMS_LANMan(rchallenge, rchallenge_len, secret, secret_len, &response); - - /* prefered method is set by option */ - response.UseNT = !ms_lanman; -#else - response.UseNT = 1; -#endif - - BCOPY(&response, cstate->response, MS_CHAP_RESPONSE_LEN); - cstate->resp_length = MS_CHAP_RESPONSE_LEN; -} - -#endif /* CHAPMS */ diff --git a/mdk-stage1/ppp/pppd/chap_ms.h b/mdk-stage1/ppp/pppd/chap_ms.h deleted file mode 100644 index fad2755c8..000000000 --- a/mdk-stage1/ppp/pppd/chap_ms.h +++ /dev/null @@ -1,33 +0,0 @@ -/* - * chap.h - Challenge Handshake Authentication Protocol definitions. - * - * Copyright (c) 1995 Eric Rosenquist, Strata Software Limited. - * http://www.strataware.com/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Eric Rosenquist. The name of the author may not be used to - * endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -#ifndef __CHAPMS_INCLUDE__ - -#define MD4_SIGNATURE_SIZE 16 /* 16 bytes in a MD4 message digest */ -#define MAX_NT_PASSWORD 256 /* Maximum number of (Unicode) chars in an NT password */ - -void ChapMS __P((chap_state *, char *, int, char *, int)); - -#define __CHAPMS_INCLUDE__ -#endif /* __CHAPMS_INCLUDE__ */ diff --git a/mdk-stage1/ppp/pppd/demand.c b/mdk-stage1/ppp/pppd/demand.c deleted file mode 100644 index 9a740be8d..000000000 --- a/mdk-stage1/ppp/pppd/demand.c +++ /dev/null @@ -1,351 +0,0 @@ -/* - * demand.c - Support routines for demand-dialling. - * - * Copyright (c) 1993 The Australian National University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the Australian National University. The name of the University - * may not be used to endorse or promote products derived from this - * software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <fcntl.h> -#include <netdb.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <sys/time.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <sys/socket.h> -#ifdef PPP_FILTER -#include <net/if.h> -#include <net/bpf.h> -#include <pcap.h> -#endif - -#include "pppd.h" -#include "fsm.h" -#include "ipcp.h" -#include "lcp.h" - -static const char rcsid[] = RCSID; - -char *frame; -int framelen; -int framemax; -int escape_flag; -int flush_flag; -int fcs; - -struct packet { - int length; - struct packet *next; - unsigned char data[1]; -}; - -struct packet *pend_q; -struct packet *pend_qtail; - -static int active_packet __P((unsigned char *, int)); - -/* - * demand_conf - configure the interface for doing dial-on-demand. - */ -void -demand_conf() -{ - int i; - struct protent *protp; - -/* framemax = lcp_allowoptions[0].mru; - if (framemax < PPP_MRU) */ - framemax = PPP_MRU; - framemax += PPP_HDRLEN + PPP_FCSLEN; - frame = malloc(framemax); - if (frame == NULL) - novm("demand frame"); - framelen = 0; - pend_q = NULL; - escape_flag = 0; - flush_flag = 0; - fcs = PPP_INITFCS; - - netif_set_mtu(0, MIN(lcp_allowoptions[0].mru, PPP_MRU)); - ppp_send_config(0, PPP_MRU, (u_int32_t) 0, 0, 0); - ppp_recv_config(0, PPP_MRU, (u_int32_t) 0, 0, 0); - -#ifdef PPP_FILTER - set_filters(&pass_filter, &active_filter); -#endif - - /* - * Call the demand_conf procedure for each protocol that's got one. - */ - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (protp->enabled_flag && protp->demand_conf != NULL) - if (!((*protp->demand_conf)(0))) - die(1); -} - - -/* - * demand_block - set each network protocol to block further packets. - */ -void -demand_block() -{ - int i; - struct protent *protp; - - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (protp->enabled_flag && protp->demand_conf != NULL) - sifnpmode(0, protp->protocol & ~0x8000, NPMODE_QUEUE); - get_loop_output(); -} - -/* - * demand_discard - set each network protocol to discard packets - * with an error. - */ -void -demand_discard() -{ - struct packet *pkt, *nextpkt; - int i; - struct protent *protp; - - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (protp->enabled_flag && protp->demand_conf != NULL) - sifnpmode(0, protp->protocol & ~0x8000, NPMODE_ERROR); - get_loop_output(); - - /* discard all saved packets */ - for (pkt = pend_q; pkt != NULL; pkt = nextpkt) { - nextpkt = pkt->next; - free(pkt); - } - pend_q = NULL; - framelen = 0; - flush_flag = 0; - escape_flag = 0; - fcs = PPP_INITFCS; -} - -/* - * demand_unblock - set each enabled network protocol to pass packets. - */ -void -demand_unblock() -{ - int i; - struct protent *protp; - - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (protp->enabled_flag && protp->demand_conf != NULL) - sifnpmode(0, protp->protocol & ~0x8000, NPMODE_PASS); -} - -/* - * FCS lookup table as calculated by genfcstab. - */ -static u_short fcstab[256] = { - 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, - 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, - 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, - 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, - 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, - 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, - 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, - 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, - 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, - 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, - 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, - 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, - 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, - 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, - 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, - 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, - 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, - 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, - 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, - 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, - 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, - 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, - 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, - 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, - 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, - 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, - 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, - 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, - 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, - 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, - 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, - 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 -}; - -/* - * loop_chars - process characters received from the loopback. - * Calls loop_frame when a complete frame has been accumulated. - * Return value is 1 if we need to bring up the link, 0 otherwise. - */ -int -loop_chars(p, n) - unsigned char *p; - int n; -{ - int c, rv; - - rv = 0; - for (; n > 0; --n) { - c = *p++; - if (c == PPP_FLAG) { - if (!escape_flag && !flush_flag - && framelen > 2 && fcs == PPP_GOODFCS) { - framelen -= 2; - if (loop_frame((unsigned char *)frame, framelen)) - rv = 1; - } - framelen = 0; - flush_flag = 0; - escape_flag = 0; - fcs = PPP_INITFCS; - continue; - } - if (flush_flag) - continue; - if (escape_flag) { - c ^= PPP_TRANS; - escape_flag = 0; - } else if (c == PPP_ESCAPE) { - escape_flag = 1; - continue; - } - if (framelen >= framemax) { - flush_flag = 1; - continue; - } - frame[framelen++] = c; - fcs = PPP_FCS(fcs, c); - } - return rv; -} - -/* - * loop_frame - given a frame obtained from the loopback, - * decide whether to bring up the link or not, and, if we want - * to transmit this frame later, put it on the pending queue. - * Return value is 1 if we need to bring up the link, 0 otherwise. - * We assume that the kernel driver has already applied the - * pass_filter, so we won't get packets it rejected. - * We apply the active_filter to see if we want this packet to - * bring up the link. - */ -int -loop_frame(frame, len) - unsigned char *frame; - int len; -{ - struct packet *pkt; - - /* dbglog("from loop: %P", frame, len); */ - if (len < PPP_HDRLEN) - return 0; - if ((PPP_PROTOCOL(frame) & 0x8000) != 0) - return 0; /* shouldn't get any of these anyway */ - if (!active_packet(frame, len)) - return 0; - - pkt = (struct packet *) malloc(sizeof(struct packet) + len); - if (pkt != NULL) { - pkt->length = len; - pkt->next = NULL; - memcpy(pkt->data, frame, len); - if (pend_q == NULL) - pend_q = pkt; - else - pend_qtail->next = pkt; - pend_qtail = pkt; - } - return 1; -} - -/* - * demand_rexmit - Resend all those frames which we got via the - * loopback, now that the real serial link is up. - */ -void -demand_rexmit(proto) - int proto; -{ - struct packet *pkt, *prev, *nextpkt; - - prev = NULL; - pkt = pend_q; - pend_q = NULL; - for (; pkt != NULL; pkt = nextpkt) { - nextpkt = pkt->next; - if (PPP_PROTOCOL(pkt->data) == proto) { - output(0, pkt->data, pkt->length); - free(pkt); - } else { - if (prev == NULL) - pend_q = pkt; - else - prev->next = pkt; - prev = pkt; - } - } - pend_qtail = prev; - if (prev != NULL) - prev->next = NULL; -} - -/* - * Scan a packet to decide whether it is an "active" packet, - * that is, whether it is worth bringing up the link for. - */ -static int -active_packet(p, len) - unsigned char *p; - int len; -{ - int proto, i; - struct protent *protp; - - if (len < PPP_HDRLEN) - return 0; - proto = PPP_PROTOCOL(p); -#ifdef PPP_FILTER - if (pass_filter.bf_len != 0 - && bpf_filter(pass_filter.bf_insns, p, len, len) == 0) - return 0; - if (active_filter.bf_len != 0 - && bpf_filter(active_filter.bf_insns, p, len, len) == 0) - return 0; -#endif - for (i = 0; (protp = protocols[i]) != NULL; ++i) { - if (protp->protocol < 0xC000 && (protp->protocol & ~0x8000) == proto) { - if (!protp->enabled_flag) - return 0; - if (protp->active_pkt == NULL) - return 1; - return (*protp->active_pkt)(p, len); - } - } - return 0; /* not a supported protocol !!?? */ -} diff --git a/mdk-stage1/ppp/pppd/eui64.c b/mdk-stage1/ppp/pppd/eui64.c deleted file mode 100644 index 7f3176035..000000000 --- a/mdk-stage1/ppp/pppd/eui64.c +++ /dev/null @@ -1,40 +0,0 @@ -/* - eui64.c - EUI64 routines for IPv6CP. - Copyright (C) 1999 Tommi Komulainen <Tommi.Komulainen@iki.fi> - - Redistribution and use in source and binary forms are permitted - provided that the above copyright notice and this paragraph are - duplicated in all such forms and that any documentation, - advertising materials, and other materials related to such - distribution and use acknowledge that the software was developed - by Tommi Komulainen. The name of the author may not be used - to endorse or promote products derived from this software without - specific prior written permission. - THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - - - $Id$ -*/ - -#define RCSID "$Id$" - -#include "pppd.h" - -static const char rcsid[] = RCSID; - -/* - * eui64_ntoa - Make an ascii representation of an interface identifier - */ -char * -eui64_ntoa(e) - eui64_t e; -{ - static char buf[32]; - - snprintf(buf, 32, "%02x%02x:%02x%02x:%02x%02x:%02x%02x", - e.e8[0], e.e8[1], e.e8[2], e.e8[3], - e.e8[4], e.e8[5], e.e8[6], e.e8[7]); - return buf; -} diff --git a/mdk-stage1/ppp/pppd/eui64.h b/mdk-stage1/ppp/pppd/eui64.h deleted file mode 100644 index ca4445345..000000000 --- a/mdk-stage1/ppp/pppd/eui64.h +++ /dev/null @@ -1,97 +0,0 @@ -/* - eui64.h - EUI64 routines for IPv6CP. - Copyright (C) 1999 Tommi Komulainen <Tommi.Komulainen@iki.fi> - - Redistribution and use in source and binary forms are permitted - provided that the above copyright notice and this paragraph are - duplicated in all such forms and that any documentation, - advertising materials, and other materials related to such - distribution and use acknowledge that the software was developed - by Tommi Komulainen. The name of the author may not be used - to endorse or promote products derived from this software without - specific prior written permission. - THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - - - $Id$ -*/ - -#ifndef __EUI64_H__ -#define __EUI64_H__ - -#if !defined(INET6) -#error "this file should only be included when INET6 is defined" -#endif /* not defined(INET6) */ - -#if defined(SOL2) -#include <netinet/in.h> - -typedef union { - uint8_t e8[8]; /* lower 64-bit IPv6 address */ - uint32_t e32[2]; /* lower 64-bit IPv6 address */ -} eui64_t; - -/* - * Declare the two below, since in.h only defines them when _KERNEL - * is declared - which shouldn't be true when dealing with user-land programs - */ -#define s6_addr8 _S6_un._S6_u8 -#define s6_addr32 _S6_un._S6_u32 - -#else /* else if not defined(SOL2) */ - -/* - * TODO: - * - * Maybe this should be done by processing struct in6_addr directly... - */ -typedef union -{ - u_int8_t e8[8]; - u_int16_t e16[4]; - u_int32_t e32[2]; -} eui64_t; - -#endif /* defined(SOL2) */ - -#define eui64_iszero(e) (((e).e32[0] | (e).e32[1]) == 0) -#define eui64_equals(e, o) (((e).e32[0] == (o).e32[0]) && \ - ((e).e32[1] == (o).e32[1])) -#define eui64_zero(e) (e).e32[0] = (e).e32[1] = 0; - -#define eui64_copy(s, d) memcpy(&(d), &(s), sizeof(eui64_t)) - -#define eui64_magic(e) do { \ - (e).e32[0] = magic(); \ - (e).e32[1] = magic(); \ - (e).e8[0] &= ~2; \ - } while (0) -#define eui64_magic_nz(x) do { \ - eui64_magic(x); \ - } while (eui64_iszero(x)) -#define eui64_magic_ne(x, y) do { \ - eui64_magic(x); \ - } while (eui64_equals(x, y)) - -#define eui64_get(ll, cp) do { \ - eui64_copy((*cp), (ll)); \ - (cp) += sizeof(eui64_t); \ - } while (0) - -#define eui64_put(ll, cp) do { \ - eui64_copy((ll), (*cp)); \ - (cp) += sizeof(eui64_t); \ - } while (0) - -#define eui64_set32(e, l) do { \ - (e).e32[0] = 0; \ - (e).e32[1] = htonl(l); \ - } while (0) -#define eui64_setlo32(e, l) eui64_set32(e, l) - -char *eui64_ntoa __P((eui64_t)); /* Returns ascii representation of id */ - -#endif /* __EUI64_H__ */ - diff --git a/mdk-stage1/ppp/pppd/fsm.c b/mdk-stage1/ppp/pppd/fsm.c deleted file mode 100644 index 07a8c11f1..000000000 --- a/mdk-stage1/ppp/pppd/fsm.c +++ /dev/null @@ -1,762 +0,0 @@ -/* - * fsm.c - {Link, IP} Control Protocol Finite State Machine. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -/* - * TODO: - * Randomize fsm id on link/init. - * Deal with variable outgoing MTU. - */ - -#include <stdio.h> -#include <string.h> -#include <sys/types.h> - -#include "pppd.h" -#include "fsm.h" - -static const char rcsid[] = RCSID; - -static void fsm_timeout __P((void *)); -static void fsm_rconfreq __P((fsm *, int, u_char *, int)); -static void fsm_rconfack __P((fsm *, int, u_char *, int)); -static void fsm_rconfnakrej __P((fsm *, int, int, u_char *, int)); -static void fsm_rtermreq __P((fsm *, int, u_char *, int)); -static void fsm_rtermack __P((fsm *)); -static void fsm_rcoderej __P((fsm *, u_char *, int)); -static void fsm_sconfreq __P((fsm *, int)); - -#define PROTO_NAME(f) ((f)->callbacks->proto_name) - -int peer_mru[NUM_PPP]; - - -/* - * fsm_init - Initialize fsm. - * - * Initialize fsm state. - */ -void -fsm_init(f) - fsm *f; -{ - f->state = INITIAL; - f->flags = 0; - f->id = 0; /* XXX Start with random id? */ - f->timeouttime = DEFTIMEOUT; - f->maxconfreqtransmits = DEFMAXCONFREQS; - f->maxtermtransmits = DEFMAXTERMREQS; - f->maxnakloops = DEFMAXNAKLOOPS; - f->term_reason_len = 0; -} - - -/* - * fsm_lowerup - The lower layer is up. - */ -void -fsm_lowerup(f) - fsm *f; -{ - switch( f->state ){ - case INITIAL: - f->state = CLOSED; - break; - - case STARTING: - if( f->flags & OPT_SILENT ) - f->state = STOPPED; - else { - /* Send an initial configure-request */ - fsm_sconfreq(f, 0); - f->state = REQSENT; - } - break; - - default: - FSMDEBUG(("%s: Up event in state %d!", PROTO_NAME(f), f->state)); - } -} - - -/* - * fsm_lowerdown - The lower layer is down. - * - * Cancel all timeouts and inform upper layers. - */ -void -fsm_lowerdown(f) - fsm *f; -{ - switch( f->state ){ - case CLOSED: - f->state = INITIAL; - break; - - case STOPPED: - f->state = STARTING; - if( f->callbacks->starting ) - (*f->callbacks->starting)(f); - break; - - case CLOSING: - f->state = INITIAL; - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - break; - - case STOPPING: - case REQSENT: - case ACKRCVD: - case ACKSENT: - f->state = STARTING; - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - break; - - case OPENED: - if( f->callbacks->down ) - (*f->callbacks->down)(f); - f->state = STARTING; - break; - - default: - FSMDEBUG(("%s: Down event in state %d!", PROTO_NAME(f), f->state)); - } -} - - -/* - * fsm_open - Link is allowed to come up. - */ -void -fsm_open(f) - fsm *f; -{ - switch( f->state ){ - case INITIAL: - f->state = STARTING; - if( f->callbacks->starting ) - (*f->callbacks->starting)(f); - break; - - case CLOSED: - if( f->flags & OPT_SILENT ) - f->state = STOPPED; - else { - /* Send an initial configure-request */ - fsm_sconfreq(f, 0); - f->state = REQSENT; - } - break; - - case CLOSING: - f->state = STOPPING; - /* fall through */ - case STOPPED: - case OPENED: - if( f->flags & OPT_RESTART ){ - fsm_lowerdown(f); - fsm_lowerup(f); - } - break; - } -} - - -/* - * fsm_close - Start closing connection. - * - * Cancel timeouts and either initiate close or possibly go directly to - * the CLOSED state. - */ -void -fsm_close(f, reason) - fsm *f; - char *reason; -{ - f->term_reason = reason; - f->term_reason_len = (reason == NULL? 0: strlen(reason)); - switch( f->state ){ - case STARTING: - f->state = INITIAL; - break; - case STOPPED: - f->state = CLOSED; - break; - case STOPPING: - f->state = CLOSING; - break; - - case REQSENT: - case ACKRCVD: - case ACKSENT: - case OPENED: - if( f->state != OPENED ) - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - else if( f->callbacks->down ) - (*f->callbacks->down)(f); /* Inform upper layers we're down */ - - /* Init restart counter, send Terminate-Request */ - f->retransmits = f->maxtermtransmits; - fsm_sdata(f, TERMREQ, f->reqid = ++f->id, - (u_char *) f->term_reason, f->term_reason_len); - TIMEOUT(fsm_timeout, f, f->timeouttime); - --f->retransmits; - - f->state = CLOSING; - break; - } -} - - -/* - * fsm_timeout - Timeout expired. - */ -static void -fsm_timeout(arg) - void *arg; -{ - fsm *f = (fsm *) arg; - - switch (f->state) { - case CLOSING: - case STOPPING: - if( f->retransmits <= 0 ){ - /* - * We've waited for an ack long enough. Peer probably heard us. - */ - f->state = (f->state == CLOSING)? CLOSED: STOPPED; - if( f->callbacks->finished ) - (*f->callbacks->finished)(f); - } else { - /* Send Terminate-Request */ - fsm_sdata(f, TERMREQ, f->reqid = ++f->id, - (u_char *) f->term_reason, f->term_reason_len); - TIMEOUT(fsm_timeout, f, f->timeouttime); - --f->retransmits; - } - break; - - case REQSENT: - case ACKRCVD: - case ACKSENT: - if (f->retransmits <= 0) { - warn("%s: timeout sending Config-Requests\n", PROTO_NAME(f)); - f->state = STOPPED; - if( (f->flags & OPT_PASSIVE) == 0 && f->callbacks->finished ) - (*f->callbacks->finished)(f); - - } else { - /* Retransmit the configure-request */ - if (f->callbacks->retransmit) - (*f->callbacks->retransmit)(f); - fsm_sconfreq(f, 1); /* Re-send Configure-Request */ - if( f->state == ACKRCVD ) - f->state = REQSENT; - } - break; - - default: - FSMDEBUG(("%s: Timeout event in state %d!", PROTO_NAME(f), f->state)); - } -} - - -/* - * fsm_input - Input packet. - */ -void -fsm_input(f, inpacket, l) - fsm *f; - u_char *inpacket; - int l; -{ - u_char *inp; - u_char code, id; - int len; - - /* - * Parse header (code, id and length). - * If packet too short, drop it. - */ - inp = inpacket; - if (l < HEADERLEN) { - FSMDEBUG(("fsm_input(%x): Rcvd short header.", f->protocol)); - return; - } - GETCHAR(code, inp); - GETCHAR(id, inp); - GETSHORT(len, inp); - if (len < HEADERLEN) { - FSMDEBUG(("fsm_input(%x): Rcvd illegal length.", f->protocol)); - return; - } - if (len > l) { - FSMDEBUG(("fsm_input(%x): Rcvd short packet.", f->protocol)); - return; - } - len -= HEADERLEN; /* subtract header length */ - - if( f->state == INITIAL || f->state == STARTING ){ - FSMDEBUG(("fsm_input(%x): Rcvd packet in state %d.", - f->protocol, f->state)); - return; - } - - /* - * Action depends on code. - */ - switch (code) { - case CONFREQ: - fsm_rconfreq(f, id, inp, len); - break; - - case CONFACK: - fsm_rconfack(f, id, inp, len); - break; - - case CONFNAK: - case CONFREJ: - fsm_rconfnakrej(f, code, id, inp, len); - break; - - case TERMREQ: - fsm_rtermreq(f, id, inp, len); - break; - - case TERMACK: - fsm_rtermack(f); - break; - - case CODEREJ: - fsm_rcoderej(f, inp, len); - break; - - default: - if( !f->callbacks->extcode - || !(*f->callbacks->extcode)(f, code, id, inp, len) ) - fsm_sdata(f, CODEREJ, ++f->id, inpacket, len + HEADERLEN); - break; - } -} - - -/* - * fsm_rconfreq - Receive Configure-Request. - */ -static void -fsm_rconfreq(f, id, inp, len) - fsm *f; - u_char id; - u_char *inp; - int len; -{ - int code, reject_if_disagree; - - switch( f->state ){ - case CLOSED: - /* Go away, we're closed */ - fsm_sdata(f, TERMACK, id, NULL, 0); - return; - case CLOSING: - case STOPPING: - return; - - case OPENED: - /* Go down and restart negotiation */ - if( f->callbacks->down ) - (*f->callbacks->down)(f); /* Inform upper layers */ - fsm_sconfreq(f, 0); /* Send initial Configure-Request */ - break; - - case STOPPED: - /* Negotiation started by our peer */ - fsm_sconfreq(f, 0); /* Send initial Configure-Request */ - f->state = REQSENT; - break; - } - - /* - * Pass the requested configuration options - * to protocol-specific code for checking. - */ - if (f->callbacks->reqci){ /* Check CI */ - reject_if_disagree = (f->nakloops >= f->maxnakloops); - code = (*f->callbacks->reqci)(f, inp, &len, reject_if_disagree); - } else if (len) - code = CONFREJ; /* Reject all CI */ - else - code = CONFACK; - - /* send the Ack, Nak or Rej to the peer */ - fsm_sdata(f, code, id, inp, len); - - if (code == CONFACK) { - if (f->state == ACKRCVD) { - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - f->state = OPENED; - if (f->callbacks->up) - (*f->callbacks->up)(f); /* Inform upper layers */ - } else - f->state = ACKSENT; - f->nakloops = 0; - - } else { - /* we sent CONFACK or CONFREJ */ - if (f->state != ACKRCVD) - f->state = REQSENT; - if( code == CONFNAK ) - ++f->nakloops; - } -} - - -/* - * fsm_rconfack - Receive Configure-Ack. - */ -static void -fsm_rconfack(f, id, inp, len) - fsm *f; - int id; - u_char *inp; - int len; -{ - if (id != f->reqid || f->seen_ack) /* Expected id? */ - return; /* Nope, toss... */ - if( !(f->callbacks->ackci? (*f->callbacks->ackci)(f, inp, len): - (len == 0)) ){ - /* Ack is bad - ignore it */ - error("Received bad configure-ack: %P", inp, len); - return; - } - f->seen_ack = 1; - - switch (f->state) { - case CLOSED: - case STOPPED: - fsm_sdata(f, TERMACK, id, NULL, 0); - break; - - case REQSENT: - f->state = ACKRCVD; - f->retransmits = f->maxconfreqtransmits; - break; - - case ACKRCVD: - /* Huh? an extra valid Ack? oh well... */ - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - fsm_sconfreq(f, 0); - f->state = REQSENT; - break; - - case ACKSENT: - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - f->state = OPENED; - f->retransmits = f->maxconfreqtransmits; - if (f->callbacks->up) - (*f->callbacks->up)(f); /* Inform upper layers */ - break; - - case OPENED: - /* Go down and restart negotiation */ - if (f->callbacks->down) - (*f->callbacks->down)(f); /* Inform upper layers */ - fsm_sconfreq(f, 0); /* Send initial Configure-Request */ - f->state = REQSENT; - break; - } -} - - -/* - * fsm_rconfnakrej - Receive Configure-Nak or Configure-Reject. - */ -static void -fsm_rconfnakrej(f, code, id, inp, len) - fsm *f; - int code, id; - u_char *inp; - int len; -{ - int (*proc) __P((fsm *, u_char *, int)); - int ret; - - if (id != f->reqid || f->seen_ack) /* Expected id? */ - return; /* Nope, toss... */ - proc = (code == CONFNAK)? f->callbacks->nakci: f->callbacks->rejci; - if (!proc || !(ret = proc(f, inp, len))) { - /* Nak/reject is bad - ignore it */ - error("Received bad configure-nak/rej: %P", inp, len); - return; - } - f->seen_ack = 1; - - switch (f->state) { - case CLOSED: - case STOPPED: - fsm_sdata(f, TERMACK, id, NULL, 0); - break; - - case REQSENT: - case ACKSENT: - /* They didn't agree to what we wanted - try another request */ - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - if (ret < 0) - f->state = STOPPED; /* kludge for stopping CCP */ - else - fsm_sconfreq(f, 0); /* Send Configure-Request */ - break; - - case ACKRCVD: - /* Got a Nak/reject when we had already had an Ack?? oh well... */ - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - fsm_sconfreq(f, 0); - f->state = REQSENT; - break; - - case OPENED: - /* Go down and restart negotiation */ - if (f->callbacks->down) - (*f->callbacks->down)(f); /* Inform upper layers */ - fsm_sconfreq(f, 0); /* Send initial Configure-Request */ - f->state = REQSENT; - break; - } -} - - -/* - * fsm_rtermreq - Receive Terminate-Req. - */ -static void -fsm_rtermreq(f, id, p, len) - fsm *f; - int id; - u_char *p; - int len; -{ - switch (f->state) { - case ACKRCVD: - case ACKSENT: - f->state = REQSENT; /* Start over but keep trying */ - break; - - case OPENED: - if (len > 0) { - info("%s terminated by peer (%0.*v)", PROTO_NAME(f), len, p); - } else - info("%s terminated by peer", PROTO_NAME(f)); - if (f->callbacks->down) - (*f->callbacks->down)(f); /* Inform upper layers */ - f->retransmits = 0; - f->state = STOPPING; - TIMEOUT(fsm_timeout, f, f->timeouttime); - break; - } - - fsm_sdata(f, TERMACK, id, NULL, 0); -} - - -/* - * fsm_rtermack - Receive Terminate-Ack. - */ -static void -fsm_rtermack(f) - fsm *f; -{ - switch (f->state) { - case CLOSING: - UNTIMEOUT(fsm_timeout, f); - f->state = CLOSED; - if( f->callbacks->finished ) - (*f->callbacks->finished)(f); - break; - case STOPPING: - UNTIMEOUT(fsm_timeout, f); - f->state = STOPPED; - if( f->callbacks->finished ) - (*f->callbacks->finished)(f); - break; - - case ACKRCVD: - f->state = REQSENT; - break; - - case OPENED: - if (f->callbacks->down) - (*f->callbacks->down)(f); /* Inform upper layers */ - fsm_sconfreq(f, 0); - break; - } -} - - -/* - * fsm_rcoderej - Receive an Code-Reject. - */ -static void -fsm_rcoderej(f, inp, len) - fsm *f; - u_char *inp; - int len; -{ - u_char code, id; - - if (len < HEADERLEN) { - FSMDEBUG(("fsm_rcoderej: Rcvd short Code-Reject packet!")); - return; - } - GETCHAR(code, inp); - GETCHAR(id, inp); - warn("%s: Rcvd Code-Reject for code %d, id %d", PROTO_NAME(f), code, id); - - if( f->state == ACKRCVD ) - f->state = REQSENT; -} - - -/* - * fsm_protreject - Peer doesn't speak this protocol. - * - * Treat this as a catastrophic error (RXJ-). - */ -void -fsm_protreject(f) - fsm *f; -{ - switch( f->state ){ - case CLOSING: - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - /* fall through */ - case CLOSED: - f->state = CLOSED; - if( f->callbacks->finished ) - (*f->callbacks->finished)(f); - break; - - case STOPPING: - case REQSENT: - case ACKRCVD: - case ACKSENT: - UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ - /* fall through */ - case STOPPED: - f->state = STOPPED; - if( f->callbacks->finished ) - (*f->callbacks->finished)(f); - break; - - case OPENED: - if( f->callbacks->down ) - (*f->callbacks->down)(f); - - /* Init restart counter, send Terminate-Request */ - f->retransmits = f->maxtermtransmits; - fsm_sdata(f, TERMREQ, f->reqid = ++f->id, - (u_char *) f->term_reason, f->term_reason_len); - TIMEOUT(fsm_timeout, f, f->timeouttime); - --f->retransmits; - - f->state = STOPPING; - break; - - default: - FSMDEBUG(("%s: Protocol-reject event in state %d!", - PROTO_NAME(f), f->state)); - } -} - - -/* - * fsm_sconfreq - Send a Configure-Request. - */ -static void -fsm_sconfreq(f, retransmit) - fsm *f; - int retransmit; -{ - u_char *outp; - int cilen; - - if( f->state != REQSENT && f->state != ACKRCVD && f->state != ACKSENT ){ - /* Not currently negotiating - reset options */ - if( f->callbacks->resetci ) - (*f->callbacks->resetci)(f); - f->nakloops = 0; - } - - if( !retransmit ){ - /* New request - reset retransmission counter, use new ID */ - f->retransmits = f->maxconfreqtransmits; - f->reqid = ++f->id; - } - - f->seen_ack = 0; - - /* - * Make up the request packet - */ - outp = outpacket_buf + PPP_HDRLEN + HEADERLEN; - if( f->callbacks->cilen && f->callbacks->addci ){ - cilen = (*f->callbacks->cilen)(f); - if( cilen > peer_mru[f->unit] - HEADERLEN ) - cilen = peer_mru[f->unit] - HEADERLEN; - if (f->callbacks->addci) - (*f->callbacks->addci)(f, outp, &cilen); - } else - cilen = 0; - - /* send the request to our peer */ - fsm_sdata(f, CONFREQ, f->reqid, outp, cilen); - - /* start the retransmit timer */ - --f->retransmits; - TIMEOUT(fsm_timeout, f, f->timeouttime); -} - - -/* - * fsm_sdata - Send some data. - * - * Used for all packets sent to our peer by this module. - */ -void -fsm_sdata(f, code, id, data, datalen) - fsm *f; - u_char code, id; - u_char *data; - int datalen; -{ - u_char *outp; - int outlen; - - /* Adjust length to be smaller than MTU */ - outp = outpacket_buf; - if (datalen > peer_mru[f->unit] - HEADERLEN) - datalen = peer_mru[f->unit] - HEADERLEN; - if (datalen && data != outp + PPP_HDRLEN + HEADERLEN) - BCOPY(data, outp + PPP_HDRLEN + HEADERLEN, datalen); - outlen = datalen + HEADERLEN; - MAKEHEADER(outp, f->protocol); - PUTCHAR(code, outp); - PUTCHAR(id, outp); - PUTSHORT(outlen, outp); - output(f->unit, outpacket_buf, outlen + PPP_HDRLEN); -} diff --git a/mdk-stage1/ppp/pppd/fsm.h b/mdk-stage1/ppp/pppd/fsm.h deleted file mode 100644 index c94a68e6c..000000000 --- a/mdk-stage1/ppp/pppd/fsm.h +++ /dev/null @@ -1,144 +0,0 @@ -/* - * fsm.h - {Link, IP} Control Protocol Finite State Machine definitions. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -/* - * Packet header = Code, id, length. - */ -#define HEADERLEN 4 - - -/* - * CP (LCP, IPCP, etc.) codes. - */ -#define CONFREQ 1 /* Configuration Request */ -#define CONFACK 2 /* Configuration Ack */ -#define CONFNAK 3 /* Configuration Nak */ -#define CONFREJ 4 /* Configuration Reject */ -#define TERMREQ 5 /* Termination Request */ -#define TERMACK 6 /* Termination Ack */ -#define CODEREJ 7 /* Code Reject */ - - -/* - * Each FSM is described by an fsm structure and fsm callbacks. - */ -typedef struct fsm { - int unit; /* Interface unit number */ - int protocol; /* Data Link Layer Protocol field value */ - int state; /* State */ - int flags; /* Contains option bits */ - u_char id; /* Current id */ - u_char reqid; /* Current request id */ - u_char seen_ack; /* Have received valid Ack/Nak/Rej to Req */ - int timeouttime; /* Timeout time in milliseconds */ - int maxconfreqtransmits; /* Maximum Configure-Request transmissions */ - int retransmits; /* Number of retransmissions left */ - int maxtermtransmits; /* Maximum Terminate-Request transmissions */ - int nakloops; /* Number of nak loops since last ack */ - int maxnakloops; /* Maximum number of nak loops tolerated */ - struct fsm_callbacks *callbacks; /* Callback routines */ - char *term_reason; /* Reason for closing protocol */ - int term_reason_len; /* Length of term_reason */ -} fsm; - - -typedef struct fsm_callbacks { - void (*resetci) /* Reset our Configuration Information */ - __P((fsm *)); - int (*cilen) /* Length of our Configuration Information */ - __P((fsm *)); - void (*addci) /* Add our Configuration Information */ - __P((fsm *, u_char *, int *)); - int (*ackci) /* ACK our Configuration Information */ - __P((fsm *, u_char *, int)); - int (*nakci) /* NAK our Configuration Information */ - __P((fsm *, u_char *, int)); - int (*rejci) /* Reject our Configuration Information */ - __P((fsm *, u_char *, int)); - int (*reqci) /* Request peer's Configuration Information */ - __P((fsm *, u_char *, int *, int)); - void (*up) /* Called when fsm reaches OPENED state */ - __P((fsm *)); - void (*down) /* Called when fsm leaves OPENED state */ - __P((fsm *)); - void (*starting) /* Called when we want the lower layer */ - __P((fsm *)); - void (*finished) /* Called when we don't want the lower layer */ - __P((fsm *)); - void (*protreject) /* Called when Protocol-Reject received */ - __P((int)); - void (*retransmit) /* Retransmission is necessary */ - __P((fsm *)); - int (*extcode) /* Called when unknown code received */ - __P((fsm *, int, int, u_char *, int)); - char *proto_name; /* String name for protocol (for messages) */ -} fsm_callbacks; - - -/* - * Link states. - */ -#define INITIAL 0 /* Down, hasn't been opened */ -#define STARTING 1 /* Down, been opened */ -#define CLOSED 2 /* Up, hasn't been opened */ -#define STOPPED 3 /* Open, waiting for down event */ -#define CLOSING 4 /* Terminating the connection, not open */ -#define STOPPING 5 /* Terminating, but open */ -#define REQSENT 6 /* We've sent a Config Request */ -#define ACKRCVD 7 /* We've received a Config Ack */ -#define ACKSENT 8 /* We've sent a Config Ack */ -#define OPENED 9 /* Connection available */ - - -/* - * Flags - indicate options controlling FSM operation - */ -#define OPT_PASSIVE 1 /* Don't die if we don't get a response */ -#define OPT_RESTART 2 /* Treat 2nd OPEN as DOWN, UP */ -#define OPT_SILENT 4 /* Wait for peer to speak first */ - - -/* - * Timeouts. - */ -#define DEFTIMEOUT 3 /* Timeout time in seconds */ -#define DEFMAXTERMREQS 2 /* Maximum Terminate-Request transmissions */ -#define DEFMAXCONFREQS 10 /* Maximum Configure-Request transmissions */ -#define DEFMAXNAKLOOPS 5 /* Maximum number of nak loops */ - - -/* - * Prototypes - */ -void fsm_init __P((fsm *)); -void fsm_lowerup __P((fsm *)); -void fsm_lowerdown __P((fsm *)); -void fsm_open __P((fsm *)); -void fsm_close __P((fsm *, char *)); -void fsm_input __P((fsm *, u_char *, int)); -void fsm_protreject __P((fsm *)); -void fsm_sdata __P((fsm *, int, int, u_char *, int)); - - -/* - * Variables - */ -extern int peer_mru[]; /* currently negotiated peer MRU (per unit) */ diff --git a/mdk-stage1/ppp/pppd/ipcp.c b/mdk-stage1/ppp/pppd/ipcp.c deleted file mode 100644 index 3f64357ed..000000000 --- a/mdk-stage1/ppp/pppd/ipcp.c +++ /dev/null @@ -1,2054 +0,0 @@ -/* - * ipcp.c - PPP IP Control Protocol. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -/* - * TODO: - */ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <netdb.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> - -#include "pppd.h" -#include "fsm.h" -#include "ipcp.h" -#include "pathnames.h" - -static const char rcsid[] = RCSID; - -/* global vars */ -ipcp_options ipcp_wantoptions[NUM_PPP]; /* Options that we want to request */ -ipcp_options ipcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */ -ipcp_options ipcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */ -ipcp_options ipcp_hisoptions[NUM_PPP]; /* Options that we ack'd */ - -u_int32_t netmask = 0; /* IP netmask to set on interface */ - -bool disable_defaultip = 0; /* Don't use hostname for default IP adrs */ - -/* Hook for a plugin to know when IP protocol has come up */ -void (*ip_up_hook) __P((void)) = NULL; - -/* Hook for a plugin to know when IP protocol has come down */ -void (*ip_down_hook) __P((void)) = NULL; - -/* Hook for a plugin to choose the remote IP address */ -void (*ip_choose_hook) __P((u_int32_t *)) = NULL; - -/* local vars */ -static int default_route_set[NUM_PPP]; /* Have set up a default route */ -static int proxy_arp_set[NUM_PPP]; /* Have created proxy arp entry */ -static bool usepeerdns; /* Ask peer for DNS addrs */ -static int ipcp_is_up; /* have called np_up() */ -static bool ask_for_local; /* request our address from peer */ -static char vj_value[8]; /* string form of vj option value */ -static char netmask_str[20]; /* string form of netmask value */ - -/* - * Callbacks for fsm code. (CI = Configuration Information) - */ -static void ipcp_resetci __P((fsm *)); /* Reset our CI */ -static int ipcp_cilen __P((fsm *)); /* Return length of our CI */ -static void ipcp_addci __P((fsm *, u_char *, int *)); /* Add our CI */ -static int ipcp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */ -static int ipcp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */ -static int ipcp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */ -static int ipcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */ -static void ipcp_up __P((fsm *)); /* We're UP */ -static void ipcp_down __P((fsm *)); /* We're DOWN */ -static void ipcp_finished __P((fsm *)); /* Don't need lower layer */ - -fsm ipcp_fsm[NUM_PPP]; /* IPCP fsm structure */ - -static fsm_callbacks ipcp_callbacks = { /* IPCP callback routines */ - ipcp_resetci, /* Reset our Configuration Information */ - ipcp_cilen, /* Length of our Configuration Information */ - ipcp_addci, /* Add our Configuration Information */ - ipcp_ackci, /* ACK our Configuration Information */ - ipcp_nakci, /* NAK our Configuration Information */ - ipcp_rejci, /* Reject our Configuration Information */ - ipcp_reqci, /* Request peer's Configuration Information */ - ipcp_up, /* Called when fsm reaches OPENED state */ - ipcp_down, /* Called when fsm leaves OPENED state */ - NULL, /* Called when we want the lower layer up */ - ipcp_finished, /* Called when we want the lower layer down */ - NULL, /* Called when Protocol-Reject received */ - NULL, /* Retransmission is necessary */ - NULL, /* Called to handle protocol-specific codes */ - "IPCP" /* String name of protocol */ -}; - -/* - * Command-line options. - */ -static int setvjslots __P((char **)); -static int setdnsaddr __P((char **)); -static int setwinsaddr __P((char **)); -static int setnetmask __P((char **)); -static int setipaddr __P((char *, char **, int)); -static void printipaddr __P((option_t *, void (*)(void *, char *,...),void *)); - -static option_t ipcp_option_list[] = { - { "noip", o_bool, &ipcp_protent.enabled_flag, - "Disable IP and IPCP" }, - { "-ip", o_bool, &ipcp_protent.enabled_flag, - "Disable IP and IPCP", OPT_ALIAS }, - - { "novj", o_bool, &ipcp_wantoptions[0].neg_vj, - "Disable VJ compression", OPT_A2CLR, &ipcp_allowoptions[0].neg_vj }, - { "-vj", o_bool, &ipcp_wantoptions[0].neg_vj, - "Disable VJ compression", OPT_ALIAS | OPT_A2CLR, - &ipcp_allowoptions[0].neg_vj }, - - { "novjccomp", o_bool, &ipcp_wantoptions[0].cflag, - "Disable VJ connection-ID compression", OPT_A2CLR, - &ipcp_allowoptions[0].cflag }, - { "-vjccomp", o_bool, &ipcp_wantoptions[0].cflag, - "Disable VJ connection-ID compression", OPT_ALIAS | OPT_A2CLR, - &ipcp_allowoptions[0].cflag }, - - { "vj-max-slots", o_special, (void *)setvjslots, - "Set maximum VJ header slots", - OPT_PRIO | OPT_A2STRVAL | OPT_STATIC, vj_value }, - - { "ipcp-accept-local", o_bool, &ipcp_wantoptions[0].accept_local, - "Accept peer's address for us", 1 }, - { "ipcp-accept-remote", o_bool, &ipcp_wantoptions[0].accept_remote, - "Accept peer's address for it", 1 }, - - { "ipparam", o_string, &ipparam, - "Set ip script parameter", OPT_PRIO }, - - { "noipdefault", o_bool, &disable_defaultip, - "Don't use name for default IP adrs", 1 }, - - { "ms-dns", 1, (void *)setdnsaddr, - "DNS address for the peer's use" }, - { "ms-wins", 1, (void *)setwinsaddr, - "Nameserver for SMB over TCP/IP for peer" }, - - { "ipcp-restart", o_int, &ipcp_fsm[0].timeouttime, - "Set timeout for IPCP", OPT_PRIO }, - { "ipcp-max-terminate", o_int, &ipcp_fsm[0].maxtermtransmits, - "Set max #xmits for term-reqs", OPT_PRIO }, - { "ipcp-max-configure", o_int, &ipcp_fsm[0].maxconfreqtransmits, - "Set max #xmits for conf-reqs", OPT_PRIO }, - { "ipcp-max-failure", o_int, &ipcp_fsm[0].maxnakloops, - "Set max #conf-naks for IPCP", OPT_PRIO }, - - { "defaultroute", o_bool, &ipcp_wantoptions[0].default_route, - "Add default route", OPT_ENABLE|1, &ipcp_allowoptions[0].default_route }, - { "nodefaultroute", o_bool, &ipcp_allowoptions[0].default_route, - "disable defaultroute option", OPT_A2CLR, - &ipcp_wantoptions[0].default_route }, - { "-defaultroute", o_bool, &ipcp_allowoptions[0].default_route, - "disable defaultroute option", OPT_ALIAS | OPT_A2CLR, - &ipcp_wantoptions[0].default_route }, - - { "proxyarp", o_bool, &ipcp_wantoptions[0].proxy_arp, - "Add proxy ARP entry", OPT_ENABLE|1, &ipcp_allowoptions[0].proxy_arp }, - { "noproxyarp", o_bool, &ipcp_allowoptions[0].proxy_arp, - "disable proxyarp option", OPT_A2CLR, - &ipcp_wantoptions[0].proxy_arp }, - { "-proxyarp", o_bool, &ipcp_allowoptions[0].proxy_arp, - "disable proxyarp option", OPT_ALIAS | OPT_A2CLR, - &ipcp_wantoptions[0].proxy_arp }, - - { "usepeerdns", o_bool, &usepeerdns, - "Ask peer for DNS address(es)", 1 }, - - { "netmask", o_special, (void *)setnetmask, - "set netmask", OPT_PRIO | OPT_A2STRVAL | OPT_STATIC, netmask_str }, - - { "IP addresses", o_wild, (void *) &setipaddr, - "set local and remote IP addresses", - OPT_NOARG | OPT_A2PRINTER, (void *) &printipaddr }, - - { NULL } -}; - -/* - * Protocol entry points from main code. - */ -static void ipcp_init __P((int)); -static void ipcp_open __P((int)); -static void ipcp_close __P((int, char *)); -static void ipcp_lowerup __P((int)); -static void ipcp_lowerdown __P((int)); -static void ipcp_input __P((int, u_char *, int)); -static void ipcp_protrej __P((int)); -static int ipcp_printpkt __P((u_char *, int, - void (*) __P((void *, char *, ...)), void *)); -static void ip_check_options __P((void)); -static int ip_demand_conf __P((int)); -static int ip_active_pkt __P((u_char *, int)); -static void create_resolv __P((u_int32_t, u_int32_t)); - -struct protent ipcp_protent = { - PPP_IPCP, - ipcp_init, - ipcp_input, - ipcp_protrej, - ipcp_lowerup, - ipcp_lowerdown, - ipcp_open, - ipcp_close, - ipcp_printpkt, - NULL, - 1, - "IPCP", - "IP", - ipcp_option_list, - ip_check_options, - ip_demand_conf, - ip_active_pkt -}; - -static void ipcp_clear_addrs __P((int, u_int32_t, u_int32_t)); -static void ipcp_script __P((char *)); /* Run an up/down script */ -static void ipcp_script_done __P((void *)); - -/* - * Lengths of configuration options. - */ -#define CILEN_VOID 2 -#define CILEN_COMPRESS 4 /* min length for compression protocol opt. */ -#define CILEN_VJ 6 /* length for RFC1332 Van-Jacobson opt. */ -#define CILEN_ADDR 6 /* new-style single address option */ -#define CILEN_ADDRS 10 /* old-style dual address option */ - - -#define CODENAME(x) ((x) == CONFACK ? "ACK" : \ - (x) == CONFNAK ? "NAK" : "REJ") - -/* - * This state variable is used to ensure that we don't - * run an ipcp-up/down script while one is already running. - */ -static enum script_state { - s_down, - s_up, -} ipcp_script_state; -static pid_t ipcp_script_pid; - -/* - * Make a string representation of a network IP address. - */ -char * -ip_ntoa(ipaddr) -u_int32_t ipaddr; -{ - static char b[64]; - - slprintf(b, sizeof(b), "%I", ipaddr); - return b; -} - -/* - * Option parsing. - */ - -/* - * setvjslots - set maximum number of connection slots for VJ compression - */ -static int -setvjslots(argv) - char **argv; -{ - int value; - - if (!int_option(*argv, &value)) - return 0; - if (value < 2 || value > 16) { - option_error("vj-max-slots value must be between 2 and 16"); - return 0; - } - ipcp_wantoptions [0].maxslotindex = - ipcp_allowoptions[0].maxslotindex = value - 1; - slprintf(vj_value, sizeof(vj_value), "%d", value); - return 1; -} - -/* - * setdnsaddr - set the dns address(es) - */ -static int -setdnsaddr(argv) - char **argv; -{ - u_int32_t dns; - struct hostent *hp; - - dns = inet_addr(*argv); - if (dns == (u_int32_t) -1) { - if ((hp = gethostbyname(*argv)) == NULL) { - option_error("invalid address parameter '%s' for ms-dns option", - *argv); - return 0; - } - dns = *(u_int32_t *)hp->h_addr; - } - - /* We take the last 2 values given, the 2nd-last as the primary - and the last as the secondary. If only one is given it - becomes both primary and secondary. */ - if (ipcp_allowoptions[0].dnsaddr[1] == 0) - ipcp_allowoptions[0].dnsaddr[0] = dns; - else - ipcp_allowoptions[0].dnsaddr[0] = ipcp_allowoptions[0].dnsaddr[1]; - - /* always set the secondary address value. */ - ipcp_allowoptions[0].dnsaddr[1] = dns; - - return (1); -} - -/* - * setwinsaddr - set the wins address(es) - * This is primrarly used with the Samba package under UNIX or for pointing - * the caller to the existing WINS server on a Windows NT platform. - */ -static int -setwinsaddr(argv) - char **argv; -{ - u_int32_t wins; - struct hostent *hp; - - wins = inet_addr(*argv); - if (wins == (u_int32_t) -1) { - if ((hp = gethostbyname(*argv)) == NULL) { - option_error("invalid address parameter '%s' for ms-wins option", - *argv); - return 0; - } - wins = *(u_int32_t *)hp->h_addr; - } - - /* We take the last 2 values given, the 2nd-last as the primary - and the last as the secondary. If only one is given it - becomes both primary and secondary. */ - if (ipcp_allowoptions[0].winsaddr[1] == 0) - ipcp_allowoptions[0].winsaddr[0] = wins; - else - ipcp_allowoptions[0].winsaddr[0] = ipcp_allowoptions[0].winsaddr[1]; - - /* always set the secondary address value. */ - ipcp_allowoptions[0].winsaddr[1] = wins; - - return (1); -} - -/* - * setipaddr - Set the IP address - * If doit is 0, the call is to check whether this option is - * potentially an IP address specification. - */ -static int -setipaddr(arg, argv, doit) - char *arg; - char **argv; - int doit; -{ - struct hostent *hp; - char *colon; - u_int32_t local, remote; - ipcp_options *wo = &ipcp_wantoptions[0]; - static int prio_local = 0, prio_remote = 0; - - /* - * IP address pair separated by ":". - */ - if ((colon = strchr(arg, ':')) == NULL) - return 0; - if (!doit) - return 1; - - /* - * If colon first character, then no local addr. - */ - if (colon != arg && option_priority >= prio_local) { - *colon = '\0'; - if ((local = inet_addr(arg)) == (u_int32_t) -1) { - if ((hp = gethostbyname(arg)) == NULL) { - option_error("unknown host: %s", arg); - return 0; - } - local = *(u_int32_t *)hp->h_addr; - } - if (bad_ip_adrs(local)) { - option_error("bad local IP address %s", ip_ntoa(local)); - return 0; - } - if (local != 0) - wo->ouraddr = local; - *colon = ':'; - prio_local = option_priority; - } - - /* - * If colon last character, then no remote addr. - */ - if (*++colon != '\0' && option_priority >= prio_remote) { - if ((remote = inet_addr(colon)) == (u_int32_t) -1) { - if ((hp = gethostbyname(colon)) == NULL) { - option_error("unknown host: %s", colon); - return 0; - } - remote = *(u_int32_t *)hp->h_addr; - if (remote_name[0] == 0) - strlcpy(remote_name, colon, sizeof(remote_name)); - } - if (bad_ip_adrs(remote)) { - option_error("bad remote IP address %s", ip_ntoa(remote)); - return 0; - } - if (remote != 0) - wo->hisaddr = remote; - prio_remote = option_priority; - } - - return 1; -} - -static void -printipaddr(opt, printer, arg) - option_t *opt; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - ipcp_options *wo = &ipcp_wantoptions[0]; - - if (wo->ouraddr != 0) - printer(arg, "%I", wo->ouraddr); - printer(arg, ":"); - if (wo->hisaddr != 0) - printer(arg, "%I", wo->hisaddr); -} - -/* - * setnetmask - set the netmask to be used on the interface. - */ -static int -setnetmask(argv) - char **argv; -{ - u_int32_t mask; - int n; - char *p; - - /* - * Unfortunately, if we use inet_addr, we can't tell whether - * a result of all 1s is an error or a valid 255.255.255.255. - */ - p = *argv; - n = parse_dotted_ip(p, &mask); - - mask = htonl(mask); - - if (n == 0 || p[n] != 0 || (netmask & ~mask) != 0) { - option_error("invalid netmask value '%s'", *argv); - return 0; - } - - netmask = mask; - slprintf(netmask_str, sizeof(netmask_str), "%I", mask); - - return (1); -} - -int -parse_dotted_ip(p, vp) - char *p; - u_int32_t *vp; -{ - int n; - u_int32_t v, b; - char *endp, *p0 = p; - - v = 0; - for (n = 3;; --n) { - b = strtoul(p, &endp, 0); - if (endp == p) - return 0; - if (b > 255) { - if (n < 3) - return 0; - /* accept e.g. 0xffffff00 */ - *vp = b; - return endp - p0; - } - v |= b << (n * 8); - p = endp; - if (n == 0) - break; - if (*p != '.') - return 0; - ++p; - } - *vp = v; - return p - p0; -} - - -/* - * ipcp_init - Initialize IPCP. - */ -static void -ipcp_init(unit) - int unit; -{ - fsm *f = &ipcp_fsm[unit]; - ipcp_options *wo = &ipcp_wantoptions[unit]; - ipcp_options *ao = &ipcp_allowoptions[unit]; - - f->unit = unit; - f->protocol = PPP_IPCP; - f->callbacks = &ipcp_callbacks; - fsm_init(&ipcp_fsm[unit]); - - memset(wo, 0, sizeof(*wo)); - memset(ao, 0, sizeof(*ao)); - - wo->neg_addr = 1; - wo->neg_vj = 1; - wo->vj_protocol = IPCP_VJ_COMP; - wo->maxslotindex = MAX_STATES - 1; /* really max index */ - wo->cflag = 1; - - - /* max slots and slot-id compression are currently hardwired in */ - /* ppp_if.c to 16 and 1, this needs to be changed (among other */ - /* things) gmc */ - - ao->neg_addr = 1; - ao->neg_vj = 1; - ao->maxslotindex = MAX_STATES - 1; - ao->cflag = 1; - - /* - * XXX These control whether the user may use the proxyarp - * and defaultroute options. - */ - ao->proxy_arp = 1; - ao->default_route = 1; -} - - -/* - * ipcp_open - IPCP is allowed to come up. - */ -static void -ipcp_open(unit) - int unit; -{ - fsm_open(&ipcp_fsm[unit]); -} - - -/* - * ipcp_close - Take IPCP down. - */ -static void -ipcp_close(unit, reason) - int unit; - char *reason; -{ - fsm_close(&ipcp_fsm[unit], reason); -} - - -/* - * ipcp_lowerup - The lower layer is up. - */ -static void -ipcp_lowerup(unit) - int unit; -{ - fsm_lowerup(&ipcp_fsm[unit]); -} - - -/* - * ipcp_lowerdown - The lower layer is down. - */ -static void -ipcp_lowerdown(unit) - int unit; -{ - fsm_lowerdown(&ipcp_fsm[unit]); -} - - -/* - * ipcp_input - Input IPCP packet. - */ -static void -ipcp_input(unit, p, len) - int unit; - u_char *p; - int len; -{ - fsm_input(&ipcp_fsm[unit], p, len); -} - - -/* - * ipcp_protrej - A Protocol-Reject was received for IPCP. - * - * Pretend the lower layer went down, so we shut up. - */ -static void -ipcp_protrej(unit) - int unit; -{ - fsm_lowerdown(&ipcp_fsm[unit]); -} - - -/* - * ipcp_resetci - Reset our CI. - * Called by fsm_sconfreq, Send Configure Request. - */ -static void -ipcp_resetci(f) - fsm *f; -{ - ipcp_options *wo = &ipcp_wantoptions[f->unit]; - ipcp_options *go = &ipcp_gotoptions[f->unit]; - - wo->req_addr = wo->neg_addr && ipcp_allowoptions[f->unit].neg_addr; - if (wo->ouraddr == 0) - wo->accept_local = 1; - if (wo->hisaddr == 0) - wo->accept_remote = 1; - wo->req_dns1 = usepeerdns; /* Request DNS addresses from the peer */ - wo->req_dns2 = usepeerdns; - *go = *wo; - if (!ask_for_local) - go->ouraddr = 0; - if (ip_choose_hook) - ip_choose_hook(&wo->hisaddr); -} - - -/* - * ipcp_cilen - Return length of our CI. - * Called by fsm_sconfreq, Send Configure Request. - */ -static int -ipcp_cilen(f) - fsm *f; -{ - ipcp_options *go = &ipcp_gotoptions[f->unit]; - ipcp_options *wo = &ipcp_wantoptions[f->unit]; - ipcp_options *ho = &ipcp_hisoptions[f->unit]; - -#define LENCIVJ(neg, old) (neg ? (old? CILEN_COMPRESS : CILEN_VJ) : 0) -#define LENCIADDR(neg, old) (neg ? (old? CILEN_ADDRS : CILEN_ADDR) : 0) -#define LENCIDNS(neg) (neg ? (CILEN_ADDR) : 0) - - /* - * First see if we want to change our options to the old - * forms because we have received old forms from the peer. - */ - if (wo->neg_addr && !go->neg_addr && !go->old_addrs) { - /* use the old style of address negotiation */ - go->neg_addr = 1; - go->old_addrs = 1; - } - if (wo->neg_vj && !go->neg_vj && !go->old_vj) { - /* try an older style of VJ negotiation */ - /* use the old style only if the peer did */ - if (ho->neg_vj && ho->old_vj) { - go->neg_vj = 1; - go->old_vj = 1; - go->vj_protocol = ho->vj_protocol; - } - } - - return (LENCIADDR(go->neg_addr, go->old_addrs) + - LENCIVJ(go->neg_vj, go->old_vj) + - LENCIDNS(go->req_dns1) + - LENCIDNS(go->req_dns2)) ; -} - - -/* - * ipcp_addci - Add our desired CIs to a packet. - * Called by fsm_sconfreq, Send Configure Request. - */ -static void -ipcp_addci(f, ucp, lenp) - fsm *f; - u_char *ucp; - int *lenp; -{ - ipcp_options *go = &ipcp_gotoptions[f->unit]; - int len = *lenp; - -#define ADDCIVJ(opt, neg, val, old, maxslotindex, cflag) \ - if (neg) { \ - int vjlen = old? CILEN_COMPRESS : CILEN_VJ; \ - if (len >= vjlen) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(vjlen, ucp); \ - PUTSHORT(val, ucp); \ - if (!old) { \ - PUTCHAR(maxslotindex, ucp); \ - PUTCHAR(cflag, ucp); \ - } \ - len -= vjlen; \ - } else \ - neg = 0; \ - } - -#define ADDCIADDR(opt, neg, old, val1, val2) \ - if (neg) { \ - int addrlen = (old? CILEN_ADDRS: CILEN_ADDR); \ - if (len >= addrlen) { \ - u_int32_t l; \ - PUTCHAR(opt, ucp); \ - PUTCHAR(addrlen, ucp); \ - l = ntohl(val1); \ - PUTLONG(l, ucp); \ - if (old) { \ - l = ntohl(val2); \ - PUTLONG(l, ucp); \ - } \ - len -= addrlen; \ - } else \ - neg = 0; \ - } - -#define ADDCIDNS(opt, neg, addr) \ - if (neg) { \ - if (len >= CILEN_ADDR) { \ - u_int32_t l; \ - PUTCHAR(opt, ucp); \ - PUTCHAR(CILEN_ADDR, ucp); \ - l = ntohl(addr); \ - PUTLONG(l, ucp); \ - len -= CILEN_ADDR; \ - } else \ - neg = 0; \ - } - - ADDCIADDR((go->old_addrs? CI_ADDRS: CI_ADDR), go->neg_addr, - go->old_addrs, go->ouraddr, go->hisaddr); - - ADDCIVJ(CI_COMPRESSTYPE, go->neg_vj, go->vj_protocol, go->old_vj, - go->maxslotindex, go->cflag); - - ADDCIDNS(CI_MS_DNS1, go->req_dns1, go->dnsaddr[0]); - - ADDCIDNS(CI_MS_DNS2, go->req_dns2, go->dnsaddr[1]); - - *lenp -= len; -} - - -/* - * ipcp_ackci - Ack our CIs. - * Called by fsm_rconfack, Receive Configure ACK. - * - * Returns: - * 0 - Ack was bad. - * 1 - Ack was good. - */ -static int -ipcp_ackci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ipcp_options *go = &ipcp_gotoptions[f->unit]; - u_short cilen, citype, cishort; - u_int32_t cilong; - u_char cimaxslotindex, cicflag; - - /* - * CIs must be in exactly the same order that we sent... - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ - -#define ACKCIVJ(opt, neg, val, old, maxslotindex, cflag) \ - if (neg) { \ - int vjlen = old? CILEN_COMPRESS : CILEN_VJ; \ - if ((len -= vjlen) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != vjlen || \ - citype != opt) \ - goto bad; \ - GETSHORT(cishort, p); \ - if (cishort != val) \ - goto bad; \ - if (!old) { \ - GETCHAR(cimaxslotindex, p); \ - if (cimaxslotindex != maxslotindex) \ - goto bad; \ - GETCHAR(cicflag, p); \ - if (cicflag != cflag) \ - goto bad; \ - } \ - } - -#define ACKCIADDR(opt, neg, old, val1, val2) \ - if (neg) { \ - int addrlen = (old? CILEN_ADDRS: CILEN_ADDR); \ - u_int32_t l; \ - if ((len -= addrlen) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != addrlen || \ - citype != opt) \ - goto bad; \ - GETLONG(l, p); \ - cilong = htonl(l); \ - if (val1 != cilong) \ - goto bad; \ - if (old) { \ - GETLONG(l, p); \ - cilong = htonl(l); \ - if (val2 != cilong) \ - goto bad; \ - } \ - } - -#define ACKCIDNS(opt, neg, addr) \ - if (neg) { \ - u_int32_t l; \ - if ((len -= CILEN_ADDR) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_ADDR || citype != opt) \ - goto bad; \ - GETLONG(l, p); \ - cilong = htonl(l); \ - if (addr != cilong) \ - goto bad; \ - } - - ACKCIADDR((go->old_addrs? CI_ADDRS: CI_ADDR), go->neg_addr, - go->old_addrs, go->ouraddr, go->hisaddr); - - ACKCIVJ(CI_COMPRESSTYPE, go->neg_vj, go->vj_protocol, go->old_vj, - go->maxslotindex, go->cflag); - - ACKCIDNS(CI_MS_DNS1, go->req_dns1, go->dnsaddr[0]); - - ACKCIDNS(CI_MS_DNS2, go->req_dns2, go->dnsaddr[1]); - - /* - * If there are any remaining CIs, then this packet is bad. - */ - if (len != 0) - goto bad; - return (1); - -bad: - IPCPDEBUG(("ipcp_ackci: received bad Ack!")); - return (0); -} - -/* - * ipcp_nakci - Peer has sent a NAK for some of our CIs. - * This should not modify any state if the Nak is bad - * or if IPCP is in the OPENED state. - * Calback from fsm_rconfnakrej - Receive Configure-Nak or Configure-Reject. - * - * Returns: - * 0 - Nak was bad. - * 1 - Nak was good. - */ -static int -ipcp_nakci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ipcp_options *go = &ipcp_gotoptions[f->unit]; - u_char cimaxslotindex, cicflag; - u_char citype, cilen, *next; - u_short cishort; - u_int32_t ciaddr1, ciaddr2, l, cidnsaddr; - ipcp_options no; /* options we've seen Naks for */ - ipcp_options try; /* options to request next time */ - - BZERO(&no, sizeof(no)); - try = *go; - - /* - * Any Nak'd CIs must be in exactly the same order that we sent. - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ -#define NAKCIADDR(opt, neg, old, code) \ - if (go->neg && \ - len >= (cilen = (old? CILEN_ADDRS: CILEN_ADDR)) && \ - p[1] == cilen && \ - p[0] == opt) { \ - len -= cilen; \ - INCPTR(2, p); \ - GETLONG(l, p); \ - ciaddr1 = htonl(l); \ - if (old) { \ - GETLONG(l, p); \ - ciaddr2 = htonl(l); \ - no.old_addrs = 1; \ - } else \ - ciaddr2 = 0; \ - no.neg = 1; \ - code \ - } - -#define NAKCIVJ(opt, neg, code) \ - if (go->neg && \ - ((cilen = p[1]) == CILEN_COMPRESS || cilen == CILEN_VJ) && \ - len >= cilen && \ - p[0] == opt) { \ - len -= cilen; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - no.neg = 1; \ - code \ - } - -#define NAKCIDNS(opt, neg, code) \ - if (go->neg && \ - ((cilen = p[1]) == CILEN_ADDR) && \ - len >= cilen && \ - p[0] == opt) { \ - len -= cilen; \ - INCPTR(2, p); \ - GETLONG(l, p); \ - cidnsaddr = htonl(l); \ - no.neg = 1; \ - code \ - } - - /* - * Accept the peer's idea of {our,his} address, if different - * from our idea, only if the accept_{local,remote} flag is set. - */ - NAKCIADDR((go->old_addrs? CI_ADDRS: CI_ADDR), neg_addr, go->old_addrs, - if (go->accept_local && ciaddr1) { /* Do we know our address? */ - try.ouraddr = ciaddr1; - } - if (go->accept_remote && ciaddr2) { /* Does he know his? */ - try.hisaddr = ciaddr2; - } - ); - - /* - * Accept the peer's value of maxslotindex provided that it - * is less than what we asked for. Turn off slot-ID compression - * if the peer wants. Send old-style compress-type option if - * the peer wants. - */ - NAKCIVJ(CI_COMPRESSTYPE, neg_vj, - if (cilen == CILEN_VJ) { - GETCHAR(cimaxslotindex, p); - GETCHAR(cicflag, p); - if (cishort == IPCP_VJ_COMP) { - try.old_vj = 0; - if (cimaxslotindex < go->maxslotindex) - try.maxslotindex = cimaxslotindex; - if (!cicflag) - try.cflag = 0; - } else { - try.neg_vj = 0; - } - } else { - if (cishort == IPCP_VJ_COMP || cishort == IPCP_VJ_COMP_OLD) { - try.old_vj = 1; - try.vj_protocol = cishort; - } else { - try.neg_vj = 0; - } - } - ); - - NAKCIDNS(CI_MS_DNS1, req_dns1, - try.dnsaddr[0] = cidnsaddr; - ); - - NAKCIDNS(CI_MS_DNS2, req_dns2, - try.dnsaddr[1] = cidnsaddr; - ); - - /* - * There may be remaining CIs, if the peer is requesting negotiation - * on an option that we didn't include in our request packet. - * If they want to negotiate about IP addresses, we comply. - * If they want us to ask for compression, we refuse. - */ - while (len > CILEN_VOID) { - GETCHAR(citype, p); - GETCHAR(cilen, p); - if( (len -= cilen) < 0 ) - goto bad; - next = p + cilen - 2; - - switch (citype) { - case CI_COMPRESSTYPE: - if (go->neg_vj || no.neg_vj || - (cilen != CILEN_VJ && cilen != CILEN_COMPRESS)) - goto bad; - no.neg_vj = 1; - break; - case CI_ADDRS: - if ((go->neg_addr && go->old_addrs) || no.old_addrs - || cilen != CILEN_ADDRS) - goto bad; - try.neg_addr = 1; - try.old_addrs = 1; - GETLONG(l, p); - ciaddr1 = htonl(l); - if (ciaddr1 && go->accept_local) - try.ouraddr = ciaddr1; - GETLONG(l, p); - ciaddr2 = htonl(l); - if (ciaddr2 && go->accept_remote) - try.hisaddr = ciaddr2; - no.old_addrs = 1; - break; - case CI_ADDR: - if (go->neg_addr || no.neg_addr || cilen != CILEN_ADDR) - goto bad; - try.old_addrs = 0; - GETLONG(l, p); - ciaddr1 = htonl(l); - if (ciaddr1 && go->accept_local) - try.ouraddr = ciaddr1; - if (try.ouraddr != 0) - try.neg_addr = 1; - no.neg_addr = 1; - break; - } - p = next; - } - - /* - * OK, the Nak is good. Now we can update state. - * If there are any remaining options, we ignore them. - */ - if (f->state != OPENED) - *go = try; - - return 1; - -bad: - IPCPDEBUG(("ipcp_nakci: received bad Nak!")); - return 0; -} - - -/* - * ipcp_rejci - Reject some of our CIs. - * Callback from fsm_rconfnakrej. - */ -static int -ipcp_rejci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ipcp_options *go = &ipcp_gotoptions[f->unit]; - u_char cimaxslotindex, ciflag, cilen; - u_short cishort; - u_int32_t cilong; - ipcp_options try; /* options to request next time */ - - try = *go; - /* - * Any Rejected CIs must be in exactly the same order that we sent. - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ -#define REJCIADDR(opt, neg, old, val1, val2) \ - if (go->neg && \ - len >= (cilen = old? CILEN_ADDRS: CILEN_ADDR) && \ - p[1] == cilen && \ - p[0] == opt) { \ - u_int32_t l; \ - len -= cilen; \ - INCPTR(2, p); \ - GETLONG(l, p); \ - cilong = htonl(l); \ - /* Check rejected value. */ \ - if (cilong != val1) \ - goto bad; \ - if (old) { \ - GETLONG(l, p); \ - cilong = htonl(l); \ - /* Check rejected value. */ \ - if (cilong != val2) \ - goto bad; \ - } \ - try.neg = 0; \ - } - -#define REJCIVJ(opt, neg, val, old, maxslot, cflag) \ - if (go->neg && \ - p[1] == (old? CILEN_COMPRESS : CILEN_VJ) && \ - len >= p[1] && \ - p[0] == opt) { \ - len -= p[1]; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - /* Check rejected value. */ \ - if (cishort != val) \ - goto bad; \ - if (!old) { \ - GETCHAR(cimaxslotindex, p); \ - if (cimaxslotindex != maxslot) \ - goto bad; \ - GETCHAR(ciflag, p); \ - if (ciflag != cflag) \ - goto bad; \ - } \ - try.neg = 0; \ - } - -#define REJCIDNS(opt, neg, dnsaddr) \ - if (go->neg && \ - ((cilen = p[1]) == CILEN_ADDR) && \ - len >= cilen && \ - p[0] == opt) { \ - u_int32_t l; \ - len -= cilen; \ - INCPTR(2, p); \ - GETLONG(l, p); \ - cilong = htonl(l); \ - /* Check rejected value. */ \ - if (cilong != dnsaddr) \ - goto bad; \ - try.neg = 0; \ - } - - - REJCIADDR((go->old_addrs? CI_ADDRS: CI_ADDR), neg_addr, - go->old_addrs, go->ouraddr, go->hisaddr); - - REJCIVJ(CI_COMPRESSTYPE, neg_vj, go->vj_protocol, go->old_vj, - go->maxslotindex, go->cflag); - - REJCIDNS(CI_MS_DNS1, req_dns1, go->dnsaddr[0]); - - REJCIDNS(CI_MS_DNS2, req_dns2, go->dnsaddr[1]); - - /* - * If there are any remaining CIs, then this packet is bad. - */ - if (len != 0) - goto bad; - /* - * Now we can update state. - */ - if (f->state != OPENED) - *go = try; - return 1; - -bad: - IPCPDEBUG(("ipcp_rejci: received bad Reject!")); - return 0; -} - - -/* - * ipcp_reqci - Check the peer's requested CIs and send appropriate response. - * Callback from fsm_rconfreq, Receive Configure Request - * - * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified - * appropriately. If reject_if_disagree is non-zero, doesn't return - * CONFNAK; returns CONFREJ if it can't return CONFACK. - */ -static int -ipcp_reqci(f, inp, len, reject_if_disagree) - fsm *f; - u_char *inp; /* Requested CIs */ - int *len; /* Length of requested CIs */ - int reject_if_disagree; -{ - ipcp_options *wo = &ipcp_wantoptions[f->unit]; - ipcp_options *ho = &ipcp_hisoptions[f->unit]; - ipcp_options *ao = &ipcp_allowoptions[f->unit]; - ipcp_options *go = &ipcp_gotoptions[f->unit]; - u_char *cip, *next; /* Pointer to current and next CIs */ - u_short cilen, citype; /* Parsed len, type */ - u_short cishort; /* Parsed short value */ - u_int32_t tl, ciaddr1, ciaddr2;/* Parsed address values */ - int rc = CONFACK; /* Final packet return code */ - int orc; /* Individual option return code */ - u_char *p; /* Pointer to next char to parse */ - u_char *ucp = inp; /* Pointer to current output char */ - int l = *len; /* Length left */ - u_char maxslotindex, cflag; - int d; - - /* - * Reset all his options. - */ - BZERO(ho, sizeof(*ho)); - - /* - * Process all his options. - */ - next = inp; - while (l) { - orc = CONFACK; /* Assume success */ - cip = p = next; /* Remember begining of CI */ - if (l < 2 || /* Not enough data for CI header or */ - p[1] < 2 || /* CI length too small or */ - p[1] > l) { /* CI length too big? */ - IPCPDEBUG(("ipcp_reqci: bad CI length!")); - orc = CONFREJ; /* Reject bad CI */ - cilen = l; /* Reject till end of packet */ - l = 0; /* Don't loop again */ - goto endswitch; - } - GETCHAR(citype, p); /* Parse CI type */ - GETCHAR(cilen, p); /* Parse CI length */ - l -= cilen; /* Adjust remaining length */ - next += cilen; /* Step to next CI */ - - switch (citype) { /* Check CI type */ - case CI_ADDRS: - if (!ao->neg_addr || - cilen != CILEN_ADDRS) { /* Check CI length */ - orc = CONFREJ; /* Reject CI */ - break; - } - - /* - * If he has no address, or if we both have his address but - * disagree about it, then NAK it with our idea. - * In particular, if we don't know his address, but he does, - * then accept it. - */ - GETLONG(tl, p); /* Parse source address (his) */ - ciaddr1 = htonl(tl); - if (ciaddr1 != wo->hisaddr - && (ciaddr1 == 0 || !wo->accept_remote)) { - orc = CONFNAK; - if (!reject_if_disagree) { - DECPTR(sizeof(u_int32_t), p); - tl = ntohl(wo->hisaddr); - PUTLONG(tl, p); - } - } else if (ciaddr1 == 0 && wo->hisaddr == 0) { - /* - * If neither we nor he knows his address, reject the option. - */ - orc = CONFREJ; - wo->req_addr = 0; /* don't NAK with 0.0.0.0 later */ - break; - } - - /* - * If he doesn't know our address, or if we both have our address - * but disagree about it, then NAK it with our idea. - */ - GETLONG(tl, p); /* Parse desination address (ours) */ - ciaddr2 = htonl(tl); - if (ciaddr2 != wo->ouraddr) { - if (ciaddr2 == 0 || !wo->accept_local) { - orc = CONFNAK; - if (!reject_if_disagree) { - DECPTR(sizeof(u_int32_t), p); - tl = ntohl(wo->ouraddr); - PUTLONG(tl, p); - } - } else { - go->ouraddr = ciaddr2; /* accept peer's idea */ - } - } - - ho->neg_addr = 1; - ho->old_addrs = 1; - ho->hisaddr = ciaddr1; - ho->ouraddr = ciaddr2; - break; - - case CI_ADDR: - if (!ao->neg_addr || - cilen != CILEN_ADDR) { /* Check CI length */ - orc = CONFREJ; /* Reject CI */ - break; - } - - /* - * If he has no address, or if we both have his address but - * disagree about it, then NAK it with our idea. - * In particular, if we don't know his address, but he does, - * then accept it. - */ - GETLONG(tl, p); /* Parse source address (his) */ - ciaddr1 = htonl(tl); - if (ciaddr1 != wo->hisaddr - && (ciaddr1 == 0 || !wo->accept_remote)) { - orc = CONFNAK; - if (!reject_if_disagree) { - DECPTR(sizeof(u_int32_t), p); - tl = ntohl(wo->hisaddr); - PUTLONG(tl, p); - } - } else if (ciaddr1 == 0 && wo->hisaddr == 0) { - /* - * Don't ACK an address of 0.0.0.0 - reject it instead. - */ - orc = CONFREJ; - wo->req_addr = 0; /* don't NAK with 0.0.0.0 later */ - break; - } - - ho->neg_addr = 1; - ho->hisaddr = ciaddr1; - break; - - case CI_MS_DNS1: - case CI_MS_DNS2: - /* Microsoft primary or secondary DNS request */ - d = citype == CI_MS_DNS2; - - /* If we do not have a DNS address then we cannot send it */ - if (ao->dnsaddr[d] == 0 || - cilen != CILEN_ADDR) { /* Check CI length */ - orc = CONFREJ; /* Reject CI */ - break; - } - GETLONG(tl, p); - if (htonl(tl) != ao->dnsaddr[d]) { - DECPTR(sizeof(u_int32_t), p); - tl = ntohl(ao->dnsaddr[d]); - PUTLONG(tl, p); - orc = CONFNAK; - } - break; - - case CI_MS_WINS1: - case CI_MS_WINS2: - /* Microsoft primary or secondary WINS request */ - d = citype == CI_MS_WINS2; - - /* If we do not have a DNS address then we cannot send it */ - if (ao->winsaddr[d] == 0 || - cilen != CILEN_ADDR) { /* Check CI length */ - orc = CONFREJ; /* Reject CI */ - break; - } - GETLONG(tl, p); - if (htonl(tl) != ao->winsaddr[d]) { - DECPTR(sizeof(u_int32_t), p); - tl = ntohl(ao->winsaddr[d]); - PUTLONG(tl, p); - orc = CONFNAK; - } - break; - - case CI_COMPRESSTYPE: - if (!ao->neg_vj || - (cilen != CILEN_VJ && cilen != CILEN_COMPRESS)) { - orc = CONFREJ; - break; - } - GETSHORT(cishort, p); - - if (!(cishort == IPCP_VJ_COMP || - (cishort == IPCP_VJ_COMP_OLD && cilen == CILEN_COMPRESS))) { - orc = CONFREJ; - break; - } - - ho->neg_vj = 1; - ho->vj_protocol = cishort; - if (cilen == CILEN_VJ) { - GETCHAR(maxslotindex, p); - if (maxslotindex > ao->maxslotindex) { - orc = CONFNAK; - if (!reject_if_disagree){ - DECPTR(1, p); - PUTCHAR(ao->maxslotindex, p); - } - } - GETCHAR(cflag, p); - if (cflag && !ao->cflag) { - orc = CONFNAK; - if (!reject_if_disagree){ - DECPTR(1, p); - PUTCHAR(wo->cflag, p); - } - } - ho->maxslotindex = maxslotindex; - ho->cflag = cflag; - } else { - ho->old_vj = 1; - ho->maxslotindex = MAX_STATES - 1; - ho->cflag = 1; - } - break; - - default: - orc = CONFREJ; - break; - } -endswitch: - if (orc == CONFACK && /* Good CI */ - rc != CONFACK) /* but prior CI wasnt? */ - continue; /* Don't send this one */ - - if (orc == CONFNAK) { /* Nak this CI? */ - if (reject_if_disagree) /* Getting fed up with sending NAKs? */ - orc = CONFREJ; /* Get tough if so */ - else { - if (rc == CONFREJ) /* Rejecting prior CI? */ - continue; /* Don't send this one */ - if (rc == CONFACK) { /* Ack'd all prior CIs? */ - rc = CONFNAK; /* Not anymore... */ - ucp = inp; /* Backup */ - } - } - } - - if (orc == CONFREJ && /* Reject this CI */ - rc != CONFREJ) { /* but no prior ones? */ - rc = CONFREJ; - ucp = inp; /* Backup */ - } - - /* Need to move CI? */ - if (ucp != cip) - BCOPY(cip, ucp, cilen); /* Move it */ - - /* Update output pointer */ - INCPTR(cilen, ucp); - } - - /* - * If we aren't rejecting this packet, and we want to negotiate - * their address, and they didn't send their address, then we - * send a NAK with a CI_ADDR option appended. We assume the - * input buffer is long enough that we can append the extra - * option safely. - */ - if (rc != CONFREJ && !ho->neg_addr && - wo->req_addr && !reject_if_disagree) { - if (rc == CONFACK) { - rc = CONFNAK; - ucp = inp; /* reset pointer */ - wo->req_addr = 0; /* don't ask again */ - } - PUTCHAR(CI_ADDR, ucp); - PUTCHAR(CILEN_ADDR, ucp); - tl = ntohl(wo->hisaddr); - PUTLONG(tl, ucp); - } - - *len = ucp - inp; /* Compute output length */ - IPCPDEBUG(("ipcp: returning Configure-%s", CODENAME(rc))); - return (rc); /* Return final code */ -} - - -/* - * ip_check_options - check that any IP-related options are OK, - * and assign appropriate defaults. - */ -static void -ip_check_options() -{ - struct hostent *hp; - u_int32_t local; - ipcp_options *wo = &ipcp_wantoptions[0]; - - /* - * Default our local IP address based on our hostname. - * If local IP address already given, don't bother. - */ - if (wo->ouraddr == 0 && !disable_defaultip) { - /* - * Look up our hostname (possibly with domain name appended) - * and take the first IP address as our local IP address. - * If there isn't an IP address for our hostname, too bad. - */ - wo->accept_local = 1; /* don't insist on this default value */ - if ((hp = gethostbyname(hostname)) != NULL) { - local = *(u_int32_t *)hp->h_addr; - if (local != 0 && !bad_ip_adrs(local)) - wo->ouraddr = local; - } - } - ask_for_local = wo->ouraddr != 0 || !disable_defaultip; -} - - -/* - * ip_demand_conf - configure the interface as though - * IPCP were up, for use with dial-on-demand. - */ -static int -ip_demand_conf(u) - int u; -{ - ipcp_options *wo = &ipcp_wantoptions[u]; - - if (wo->hisaddr == 0) { - /* make up an arbitrary address for the peer */ - wo->hisaddr = htonl(0x0a707070 + ifunit); - wo->accept_remote = 1; - } - if (wo->ouraddr == 0) { - /* make up an arbitrary address for us */ - wo->ouraddr = htonl(0x0a404040 + ifunit); - wo->accept_local = 1; - ask_for_local = 0; /* don't tell the peer this address */ - } - if (!sifaddr(u, wo->ouraddr, wo->hisaddr, GetMask(wo->ouraddr))) - return 0; - if (!sifup(u)) - return 0; - if (!sifnpmode(u, PPP_IP, NPMODE_QUEUE)) - return 0; - if (wo->default_route) - if (sifdefaultroute(u, wo->ouraddr, wo->hisaddr)) - default_route_set[u] = 1; - if (wo->proxy_arp) - if (sifproxyarp(u, wo->hisaddr)) - proxy_arp_set[u] = 1; - - notice("local IP address %I", wo->ouraddr); - notice("remote IP address %I", wo->hisaddr); - - return 1; -} - - -/* - * ipcp_up - IPCP has come UP. - * - * Configure the IP network interface appropriately and bring it up. - */ -static void -ipcp_up(f) - fsm *f; -{ - u_int32_t mask; - ipcp_options *ho = &ipcp_hisoptions[f->unit]; - ipcp_options *go = &ipcp_gotoptions[f->unit]; - ipcp_options *wo = &ipcp_wantoptions[f->unit]; - - IPCPDEBUG(("ipcp: up")); - - /* - * We must have a non-zero IP address for both ends of the link. - */ - if (!ho->neg_addr) - ho->hisaddr = wo->hisaddr; - - if (go->ouraddr == 0) { - error("Could not determine local IP address"); - ipcp_close(f->unit, "Could not determine local IP address"); - return; - } - if (ho->hisaddr == 0) { - ho->hisaddr = htonl(0x0a404040 + ifunit); - warn("Could not determine remote IP address: defaulting to %I", - ho->hisaddr); - } - script_setenv("IPLOCAL", ip_ntoa(go->ouraddr), 0); - script_setenv("IPREMOTE", ip_ntoa(ho->hisaddr), 1); - - if (usepeerdns && (go->dnsaddr[0] || go->dnsaddr[1])) { - script_setenv("USEPEERDNS", "1", 0); - if (go->dnsaddr[0]) - script_setenv("DNS1", ip_ntoa(go->dnsaddr[0]), 0); - if (go->dnsaddr[1]) - script_setenv("DNS2", ip_ntoa(go->dnsaddr[1]), 0); - create_resolv(go->dnsaddr[0], go->dnsaddr[1]); - } - - /* - * Check that the peer is allowed to use the IP address it wants. - */ - if (!auth_ip_addr(f->unit, ho->hisaddr)) { - error("Peer is not authorized to use remote address %I", ho->hisaddr); - ipcp_close(f->unit, "Unauthorized remote IP address"); - return; - } - - /* set tcp compression */ - sifvjcomp(f->unit, ho->neg_vj, ho->cflag, ho->maxslotindex); - - /* - * If we are doing dial-on-demand, the interface is already - * configured, so we put out any saved-up packets, then set the - * interface to pass IP packets. - */ - if (demand) { - if (go->ouraddr != wo->ouraddr || ho->hisaddr != wo->hisaddr) { - ipcp_clear_addrs(f->unit, wo->ouraddr, wo->hisaddr); - if (go->ouraddr != wo->ouraddr) { - warn("Local IP address changed to %I", go->ouraddr); - script_setenv("OLDIPLOCAL", ip_ntoa(wo->ouraddr), 0); - wo->ouraddr = go->ouraddr; - } else - script_unsetenv("OLDIPLOCAL"); - if (ho->hisaddr != wo->hisaddr) { - warn("Remote IP address changed to %I", ho->hisaddr); - script_setenv("OLDIPREMOTE", ip_ntoa(wo->hisaddr), 0); - wo->hisaddr = ho->hisaddr; - } else - script_unsetenv("OLDIPREMOTE"); - - /* Set the interface to the new addresses */ - mask = GetMask(go->ouraddr); - if (!sifaddr(f->unit, go->ouraddr, ho->hisaddr, mask)) { - if (debug) - warn("Interface configuration failed"); - ipcp_close(f->unit, "Interface configuration failed"); - return; - } - - /* assign a default route through the interface if required */ - if (ipcp_wantoptions[f->unit].default_route) - if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr)) - default_route_set[f->unit] = 1; - - /* Make a proxy ARP entry if requested. */ - if (ipcp_wantoptions[f->unit].proxy_arp) - if (sifproxyarp(f->unit, ho->hisaddr)) - proxy_arp_set[f->unit] = 1; - - } - demand_rexmit(PPP_IP); - sifnpmode(f->unit, PPP_IP, NPMODE_PASS); - - } else { - /* - * Set IP addresses and (if specified) netmask. - */ - mask = GetMask(go->ouraddr); - -#if !(defined(SVR4) && (defined(SNI) || defined(__USLC__))) - if (!sifaddr(f->unit, go->ouraddr, ho->hisaddr, mask)) { - if (debug) - warn("Interface configuration failed"); - ipcp_close(f->unit, "Interface configuration failed"); - return; - } -#endif - - /* bring the interface up for IP */ - if (!sifup(f->unit)) { - if (debug) - warn("Interface failed to come up"); - ipcp_close(f->unit, "Interface configuration failed"); - return; - } - -#if (defined(SVR4) && (defined(SNI) || defined(__USLC__))) - if (!sifaddr(f->unit, go->ouraddr, ho->hisaddr, mask)) { - if (debug) - warn("Interface configuration failed"); - ipcp_close(f->unit, "Interface configuration failed"); - return; - } -#endif - sifnpmode(f->unit, PPP_IP, NPMODE_PASS); - - /* assign a default route through the interface if required */ - if (ipcp_wantoptions[f->unit].default_route) - if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr)) - default_route_set[f->unit] = 1; - - /* Make a proxy ARP entry if requested. */ - if (ipcp_wantoptions[f->unit].proxy_arp) - if (sifproxyarp(f->unit, ho->hisaddr)) - proxy_arp_set[f->unit] = 1; - - ipcp_wantoptions[0].ouraddr = go->ouraddr; - - notice("local IP address %I", go->ouraddr); - notice("remote IP address %I", ho->hisaddr); - if (go->dnsaddr[0]) - notice("primary DNS address %I", go->dnsaddr[0]); - if (go->dnsaddr[1]) - notice("secondary DNS address %I", go->dnsaddr[1]); - } - - np_up(f->unit, PPP_IP); - ipcp_is_up = 1; - - if (ip_up_hook) - ip_up_hook(); - - /* - * Execute the ip-up script, like this: - * /etc/ppp/ip-up interface tty speed local-IP remote-IP - */ - if (ipcp_script_state == s_down && ipcp_script_pid == 0) { - ipcp_script_state = s_up; - ipcp_script(_PATH_IPUP); - } -} - - -/* - * ipcp_down - IPCP has gone DOWN. - * - * Take the IP network interface down, clear its addresses - * and delete routes through it. - */ -static void -ipcp_down(f) - fsm *f; -{ - IPCPDEBUG(("ipcp: down")); - /* XXX a bit IPv4-centric here, we only need to get the stats - * before the interface is marked down. */ - update_link_stats(f->unit); - if (ip_down_hook) - ip_down_hook(); - if (ipcp_is_up) { - ipcp_is_up = 0; - np_down(f->unit, PPP_IP); - } - sifvjcomp(f->unit, 0, 0, 0); - - /* - * If we are doing dial-on-demand, set the interface - * to queue up outgoing packets (for now). - */ - if (demand) { - sifnpmode(f->unit, PPP_IP, NPMODE_QUEUE); - } else { - sifnpmode(f->unit, PPP_IP, NPMODE_DROP); - sifdown(f->unit); - ipcp_clear_addrs(f->unit, ipcp_gotoptions[f->unit].ouraddr, - ipcp_hisoptions[f->unit].hisaddr); - } - - /* Execute the ip-down script */ - if (ipcp_script_state == s_up && ipcp_script_pid == 0) { - ipcp_script_state = s_down; - ipcp_script(_PATH_IPDOWN); - } -} - - -/* - * ipcp_clear_addrs() - clear the interface addresses, routes, - * proxy arp entries, etc. - */ -static void -ipcp_clear_addrs(unit, ouraddr, hisaddr) - int unit; - u_int32_t ouraddr; /* local address */ - u_int32_t hisaddr; /* remote address */ -{ - if (proxy_arp_set[unit]) { - cifproxyarp(unit, hisaddr); - proxy_arp_set[unit] = 0; - } - if (default_route_set[unit]) { - cifdefaultroute(unit, ouraddr, hisaddr); - default_route_set[unit] = 0; - } - cifaddr(unit, ouraddr, hisaddr); -} - - -/* - * ipcp_finished - possibly shut down the lower layers. - */ -static void -ipcp_finished(f) - fsm *f; -{ - np_finished(f->unit, PPP_IP); -} - - -/* - * ipcp_script_done - called when the ip-up or ip-down script - * has finished. - */ -static void -ipcp_script_done(arg) - void *arg; -{ - ipcp_script_pid = 0; - switch (ipcp_script_state) { - case s_up: - if (ipcp_fsm[0].state != OPENED) { - ipcp_script_state = s_down; - ipcp_script(_PATH_IPDOWN); - } - break; - case s_down: - if (ipcp_fsm[0].state == OPENED) { - ipcp_script_state = s_up; - ipcp_script(_PATH_IPUP); - } - break; - } -} - - -/* - * ipcp_script - Execute a script with arguments - * interface-name tty-name speed local-IP remote-IP. - */ -static void -ipcp_script(script) - char *script; -{ - char strspeed[32], strlocal[32], strremote[32]; - char *argv[8]; - - slprintf(strspeed, sizeof(strspeed), "%d", baud_rate); - slprintf(strlocal, sizeof(strlocal), "%I", ipcp_gotoptions[0].ouraddr); - slprintf(strremote, sizeof(strremote), "%I", ipcp_hisoptions[0].hisaddr); - - argv[0] = script; - argv[1] = ifname; - argv[2] = devnam; - argv[3] = strspeed; - argv[4] = strlocal; - argv[5] = strremote; - argv[6] = ipparam; - argv[7] = NULL; - ipcp_script_pid = run_program(script, argv, 0, ipcp_script_done, NULL); -} - -/* - * create_resolv - create the replacement resolv.conf file - */ -static void -create_resolv(peerdns1, peerdns2) - u_int32_t peerdns1, peerdns2; -{ - FILE *f; - - f = fopen(_PATH_RESOLV, "w"); - if (f == NULL) { - error("Failed to create %s: %m", _PATH_RESOLV); - return; - } - - if (peerdns1) - fprintf(f, "nameserver %s\n", ip_ntoa(peerdns1)); - - if (peerdns2) - fprintf(f, "nameserver %s\n", ip_ntoa(peerdns2)); - - if (ferror(f)) - error("Write failed to %s: %m", _PATH_RESOLV); - - fclose(f); -} - -/* - * ipcp_printpkt - print the contents of an IPCP packet. - */ -static char *ipcp_codenames[] = { - "ConfReq", "ConfAck", "ConfNak", "ConfRej", - "TermReq", "TermAck", "CodeRej" -}; - -static int -ipcp_printpkt(p, plen, printer, arg) - u_char *p; - int plen; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int code, id, len, olen; - u_char *pstart, *optend; - u_short cishort; - u_int32_t cilong; - - if (plen < HEADERLEN) - return 0; - pstart = p; - GETCHAR(code, p); - GETCHAR(id, p); - GETSHORT(len, p); - if (len < HEADERLEN || len > plen) - return 0; - - if (code >= 1 && code <= sizeof(ipcp_codenames) / sizeof(char *)) - printer(arg, " %s", ipcp_codenames[code-1]); - else - printer(arg, " code=0x%x", code); - printer(arg, " id=0x%x", id); - len -= HEADERLEN; - switch (code) { - case CONFREQ: - case CONFACK: - case CONFNAK: - case CONFREJ: - /* print option list */ - while (len >= 2) { - GETCHAR(code, p); - GETCHAR(olen, p); - p -= 2; - if (olen < 2 || olen > len) { - break; - } - printer(arg, " <"); - len -= olen; - optend = p + olen; - switch (code) { - case CI_ADDRS: - if (olen == CILEN_ADDRS) { - p += 2; - GETLONG(cilong, p); - printer(arg, "addrs %I", htonl(cilong)); - GETLONG(cilong, p); - printer(arg, " %I", htonl(cilong)); - } - break; - case CI_COMPRESSTYPE: - if (olen >= CILEN_COMPRESS) { - p += 2; - GETSHORT(cishort, p); - printer(arg, "compress "); - switch (cishort) { - case IPCP_VJ_COMP: - printer(arg, "VJ"); - break; - case IPCP_VJ_COMP_OLD: - printer(arg, "old-VJ"); - break; - default: - printer(arg, "0x%x", cishort); - } - } - break; - case CI_ADDR: - if (olen == CILEN_ADDR) { - p += 2; - GETLONG(cilong, p); - printer(arg, "addr %I", htonl(cilong)); - } - break; - case CI_MS_DNS1: - case CI_MS_DNS2: - p += 2; - GETLONG(cilong, p); - printer(arg, "ms-dns%d %I", code - CI_MS_DNS1 + 1, - htonl(cilong)); - break; - case CI_MS_WINS1: - case CI_MS_WINS2: - p += 2; - GETLONG(cilong, p); - printer(arg, "ms-wins %I", htonl(cilong)); - break; - } - while (p < optend) { - GETCHAR(code, p); - printer(arg, " %.2x", code); - } - printer(arg, ">"); - } - break; - - case TERMACK: - case TERMREQ: - if (len > 0 && *p >= ' ' && *p < 0x7f) { - printer(arg, " "); - print_string((char *)p, len, printer, arg); - p += len; - len = 0; - } - break; - } - - /* print the rest of the bytes in the packet */ - for (; len > 0; --len) { - GETCHAR(code, p); - printer(arg, " %.2x", code); - } - - return p - pstart; -} - -/* - * ip_active_pkt - see if this IP packet is worth bringing the link up for. - * We don't bring the link up for IP fragments or for TCP FIN packets - * with no data. - */ -#define IP_HDRLEN 20 /* bytes */ -#define IP_OFFMASK 0x1fff -// #define IPPROTO_TCP 6 -#define TCP_HDRLEN 20 -#define TH_FIN 0x01 - -/* - * We use these macros because the IP header may be at an odd address, - * and some compilers might use word loads to get th_off or ip_hl. - */ - -#define net_short(x) (((x)[0] << 8) + (x)[1]) -#define get_iphl(x) (((unsigned char *)(x))[0] & 0xF) -#define get_ipoff(x) net_short((unsigned char *)(x) + 6) -#define get_ipproto(x) (((unsigned char *)(x))[9]) -#define get_tcpoff(x) (((unsigned char *)(x))[12] >> 4) -#define get_tcpflags(x) (((unsigned char *)(x))[13]) - -static int -ip_active_pkt(pkt, len) - u_char *pkt; - int len; -{ - u_char *tcp; - int hlen; - - len -= PPP_HDRLEN; - pkt += PPP_HDRLEN; - if (len < IP_HDRLEN) - return 0; - if ((get_ipoff(pkt) & IP_OFFMASK) != 0) - return 0; - if (get_ipproto(pkt) != IPPROTO_TCP) - return 1; - hlen = get_iphl(pkt) * 4; - if (len < hlen + TCP_HDRLEN) - return 0; - tcp = pkt + hlen; - if ((get_tcpflags(tcp) & TH_FIN) != 0 && len == hlen + get_tcpoff(tcp) * 4) - return 0; - return 1; -} diff --git a/mdk-stage1/ppp/pppd/ipcp.h b/mdk-stage1/ppp/pppd/ipcp.h deleted file mode 100644 index 8c5aca861..000000000 --- a/mdk-stage1/ppp/pppd/ipcp.h +++ /dev/null @@ -1,73 +0,0 @@ -/* - * ipcp.h - IP Control Protocol definitions. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -/* - * Options. - */ -#define CI_ADDRS 1 /* IP Addresses */ -#define CI_COMPRESSTYPE 2 /* Compression Type */ -#define CI_ADDR 3 - -#define CI_MS_DNS1 129 /* Primary DNS value */ -#define CI_MS_WINS1 130 /* Primary WINS value */ -#define CI_MS_DNS2 131 /* Secondary DNS value */ -#define CI_MS_WINS2 132 /* Secondary WINS value */ - -#define MAX_STATES 16 /* from slcompress.h */ - -#define IPCP_VJMODE_OLD 1 /* "old" mode (option # = 0x0037) */ -#define IPCP_VJMODE_RFC1172 2 /* "old-rfc"mode (option # = 0x002d) */ -#define IPCP_VJMODE_RFC1332 3 /* "new-rfc"mode (option # = 0x002d, */ - /* maxslot and slot number compression) */ - -#define IPCP_VJ_COMP 0x002d /* current value for VJ compression option*/ -#define IPCP_VJ_COMP_OLD 0x0037 /* "old" (i.e, broken) value for VJ */ - /* compression option*/ - -typedef struct ipcp_options { - bool neg_addr; /* Negotiate IP Address? */ - bool old_addrs; /* Use old (IP-Addresses) option? */ - bool req_addr; /* Ask peer to send IP address? */ - bool default_route; /* Assign default route through interface? */ - bool proxy_arp; /* Make proxy ARP entry for peer? */ - bool neg_vj; /* Van Jacobson Compression? */ - bool old_vj; /* use old (short) form of VJ option? */ - bool accept_local; /* accept peer's value for ouraddr */ - bool accept_remote; /* accept peer's value for hisaddr */ - bool req_dns1; /* Ask peer to send primary DNS address? */ - bool req_dns2; /* Ask peer to send secondary DNS address? */ - int vj_protocol; /* protocol value to use in VJ option */ - int maxslotindex; /* values for RFC1332 VJ compression neg. */ - bool cflag; - u_int32_t ouraddr, hisaddr; /* Addresses in NETWORK BYTE ORDER */ - u_int32_t dnsaddr[2]; /* Primary and secondary MS DNS entries */ - u_int32_t winsaddr[2]; /* Primary and secondary MS WINS entries */ -} ipcp_options; - -extern fsm ipcp_fsm[]; -extern ipcp_options ipcp_wantoptions[]; -extern ipcp_options ipcp_gotoptions[]; -extern ipcp_options ipcp_allowoptions[]; -extern ipcp_options ipcp_hisoptions[]; - -char *ip_ntoa __P((u_int32_t)); - -extern struct protent ipcp_protent; diff --git a/mdk-stage1/ppp/pppd/ipv6cp.c b/mdk-stage1/ppp/pppd/ipv6cp.c deleted file mode 100644 index 54ff7d7d8..000000000 --- a/mdk-stage1/ppp/pppd/ipv6cp.c +++ /dev/null @@ -1,1512 +0,0 @@ -/* - ipv6cp.c - PPP IPV6 Control Protocol. - Copyright (C) 1999 Tommi Komulainen <Tommi.Komulainen@iki.fi> - - Redistribution and use in source and binary forms are permitted - provided that the above copyright notice and this paragraph are - duplicated in all such forms. The name of the author may not be - used to endorse or promote products derived from this software - without specific prior written permission. - THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. -*/ - -/* Original version, based on RFC2023 : - - Copyright (c) 1995, 1996, 1997 Francis.Dupont@inria.fr, INRIA Rocquencourt, - Alain.Durand@imag.fr, IMAG, - Jean-Luc.Richier@imag.fr, IMAG-LSR. - - Copyright (c) 1998, 1999 Francis.Dupont@inria.fr, GIE DYADE, - Alain.Durand@imag.fr, IMAG, - Jean-Luc.Richier@imag.fr, IMAG-LSR. - - Ce travail a été fait au sein du GIE DYADE (Groupement d'Intérêt - Économique ayant pour membres BULL S.A. et l'INRIA). - - Ce logiciel informatique est disponible aux conditions - usuelles dans la recherche, c'est-à-dire qu'il peut - être utilisé, copié, modifié, distribué à l'unique - condition que ce texte soit conservé afin que - l'origine de ce logiciel soit reconnue. - - Le nom de l'Institut National de Recherche en Informatique - et en Automatique (INRIA), de l'IMAG, ou d'une personne morale - ou physique ayant participé à l'élaboration de ce logiciel ne peut - être utilisé sans son accord préalable explicite. - - Ce logiciel est fourni tel quel sans aucune garantie, - support ou responsabilité d'aucune sorte. - Ce logiciel est dérivé de sources d'origine - "University of California at Berkeley" et - "Digital Equipment Corporation" couvertes par des copyrights. - - L'Institut d'Informatique et de Mathématiques Appliquées de Grenoble (IMAG) - est une fédération d'unités mixtes de recherche du CNRS, de l'Institut National - Polytechnique de Grenoble et de l'Université Joseph Fourier regroupant - sept laboratoires dont le laboratoire Logiciels, Systèmes, Réseaux (LSR). - - This work has been done in the context of GIE DYADE (joint R & D venture - between BULL S.A. and INRIA). - - This software is available with usual "research" terms - with the aim of retain credits of the software. - Permission to use, copy, modify and distribute this software for any - purpose and without fee is hereby granted, provided that the above - copyright notice and this permission notice appear in all copies, - and the name of INRIA, IMAG, or any contributor not be used in advertising - or publicity pertaining to this material without the prior explicit - permission. The software is provided "as is" without any - warranties, support or liabilities of any kind. - This software is derived from source code from - "University of California at Berkeley" and - "Digital Equipment Corporation" protected by copyrights. - - Grenoble's Institute of Computer Science and Applied Mathematics (IMAG) - is a federation of seven research units funded by the CNRS, National - Polytechnic Institute of Grenoble and University Joseph Fourier. - The research unit in Software, Systems, Networks (LSR) is member of IMAG. -*/ - -/* - * Derived from : - * - * - * ipcp.c - PPP IP Control Protocol. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -#define RCSID "$Id$" - -/* - * TODO: - * - * Proxy Neighbour Discovery. - * - * Better defines for selecting the ordering of - * interface up / set address. (currently checks for __linux__, - * since SVR4 && (SNI || __USLC__) didn't work properly) - */ - -#include <stdio.h> -#include <string.h> -#include <unistd.h> -#include <netdb.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> - -#include "pppd.h" -#include "fsm.h" -#include "ipcp.h" -#include "ipv6cp.h" -#include "magic.h" -#include "pathnames.h" - -static const char rcsid[] = RCSID; - -/* global vars */ -ipv6cp_options ipv6cp_wantoptions[NUM_PPP]; /* Options that we want to request */ -ipv6cp_options ipv6cp_gotoptions[NUM_PPP]; /* Options that peer ack'd */ -ipv6cp_options ipv6cp_allowoptions[NUM_PPP]; /* Options we allow peer to request */ -ipv6cp_options ipv6cp_hisoptions[NUM_PPP]; /* Options that we ack'd */ -int no_ifaceid_neg = 0; - -/* local vars */ -static int ipv6cp_is_up; - -/* - * Callbacks for fsm code. (CI = Configuration Information) - */ -static void ipv6cp_resetci __P((fsm *)); /* Reset our CI */ -static int ipv6cp_cilen __P((fsm *)); /* Return length of our CI */ -static void ipv6cp_addci __P((fsm *, u_char *, int *)); /* Add our CI */ -static int ipv6cp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */ -static int ipv6cp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */ -static int ipv6cp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */ -static int ipv6cp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */ -static void ipv6cp_up __P((fsm *)); /* We're UP */ -static void ipv6cp_down __P((fsm *)); /* We're DOWN */ -static void ipv6cp_finished __P((fsm *)); /* Don't need lower layer */ - -fsm ipv6cp_fsm[NUM_PPP]; /* IPV6CP fsm structure */ - -static fsm_callbacks ipv6cp_callbacks = { /* IPV6CP callback routines */ - ipv6cp_resetci, /* Reset our Configuration Information */ - ipv6cp_cilen, /* Length of our Configuration Information */ - ipv6cp_addci, /* Add our Configuration Information */ - ipv6cp_ackci, /* ACK our Configuration Information */ - ipv6cp_nakci, /* NAK our Configuration Information */ - ipv6cp_rejci, /* Reject our Configuration Information */ - ipv6cp_reqci, /* Request peer's Configuration Information */ - ipv6cp_up, /* Called when fsm reaches OPENED state */ - ipv6cp_down, /* Called when fsm leaves OPENED state */ - NULL, /* Called when we want the lower layer up */ - ipv6cp_finished, /* Called when we want the lower layer down */ - NULL, /* Called when Protocol-Reject received */ - NULL, /* Retransmission is necessary */ - NULL, /* Called to handle protocol-specific codes */ - "IPV6CP" /* String name of protocol */ -}; - -/* - * Command-line options. - */ -static int setifaceid __P((char **arg)); -static void printifaceid __P((option_t *, - void (*)(void *, char *, ...), void *)); - -static option_t ipv6cp_option_list[] = { - { "ipv6", o_special, (void *)setifaceid, - "Set interface identifiers for IPV6", - OPT_A2PRINTER, (void *)printifaceid }, - - { "+ipv6", o_bool, &ipv6cp_protent.enabled_flag, - "Enable IPv6 and IPv6CP", OPT_PRIO | 1 }, - { "noipv6", o_bool, &ipv6cp_protent.enabled_flag, - "Disable IPv6 and IPv6CP", OPT_PRIOSUB }, - { "-ipv6", o_bool, &ipv6cp_protent.enabled_flag, - "Disable IPv6 and IPv6CP", OPT_PRIOSUB | OPT_ALIAS }, - - { "ipv6cp-accept-local", o_bool, &ipv6cp_allowoptions[0].accept_local, - "Accept peer's interface identifier for us", 1 }, - - { "ipv6cp-use-ipaddr", o_bool, &ipv6cp_allowoptions[0].use_ip, - "Use (default) IPv4 address as interface identifier", 1 }, - -#if defined(SOL2) - { "ipv6cp-use-persistent", o_bool, &ipv6cp_wantoptions[0].use_persistent, - "Use uniquely-available persistent value for link local address", 1 }, -#endif /* defined(SOL2) */ - - { "ipv6cp-restart", o_int, &ipv6cp_fsm[0].timeouttime, - "Set timeout for IPv6CP", OPT_PRIO }, - { "ipv6cp-max-terminate", o_int, &ipv6cp_fsm[0].maxtermtransmits, - "Set max #xmits for term-reqs", OPT_PRIO }, - { "ipv6cp-max-configure", o_int, &ipv6cp_fsm[0].maxconfreqtransmits, - "Set max #xmits for conf-reqs", OPT_PRIO }, - { "ipv6cp-max-failure", o_int, &ipv6cp_fsm[0].maxnakloops, - "Set max #conf-naks for IPv6CP", OPT_PRIO }, - - { NULL } -}; - - -/* - * Protocol entry points from main code. - */ -static void ipv6cp_init __P((int)); -static void ipv6cp_open __P((int)); -static void ipv6cp_close __P((int, char *)); -static void ipv6cp_lowerup __P((int)); -static void ipv6cp_lowerdown __P((int)); -static void ipv6cp_input __P((int, u_char *, int)); -static void ipv6cp_protrej __P((int)); -static int ipv6cp_printpkt __P((u_char *, int, - void (*) __P((void *, char *, ...)), void *)); -static void ipv6_check_options __P((void)); -static int ipv6_demand_conf __P((int)); -static int ipv6_active_pkt __P((u_char *, int)); - -struct protent ipv6cp_protent = { - PPP_IPV6CP, - ipv6cp_init, - ipv6cp_input, - ipv6cp_protrej, - ipv6cp_lowerup, - ipv6cp_lowerdown, - ipv6cp_open, - ipv6cp_close, - ipv6cp_printpkt, - NULL, - 0, - "IPV6CP", - "IPV6", - ipv6cp_option_list, - ipv6_check_options, - ipv6_demand_conf, - ipv6_active_pkt -}; - -static void ipv6cp_clear_addrs __P((int, eui64_t, eui64_t)); -static void ipv6cp_script __P((char *)); -static void ipv6cp_script_done __P((void *)); - -/* - * Lengths of configuration options. - */ -#define CILEN_VOID 2 -#define CILEN_COMPRESS 4 /* length for RFC2023 compress opt. */ -#define CILEN_IFACEID 10 /* RFC2472, interface identifier */ - -#define CODENAME(x) ((x) == CONFACK ? "ACK" : \ - (x) == CONFNAK ? "NAK" : "REJ") - -/* - * This state variable is used to ensure that we don't - * run an ipcp-up/down script while one is already running. - */ -static enum script_state { - s_down, - s_up, -} ipv6cp_script_state; -static pid_t ipv6cp_script_pid; - -/* - * setifaceid - set the interface identifiers manually - */ -static int -setifaceid(argv) - char **argv; -{ - char *comma, *arg, c; - ipv6cp_options *wo = &ipv6cp_wantoptions[0]; - struct in6_addr addr; - static int prio_local, prio_remote; - -#define VALIDID(a) ( (((a).s6_addr32[0] == 0) && ((a).s6_addr32[1] == 0)) && \ - (((a).s6_addr32[2] != 0) || ((a).s6_addr32[3] != 0)) ) - - arg = *argv; - if ((comma = strchr(arg, ',')) == NULL) - comma = arg + strlen(arg); - - /* - * If comma first character, then no local identifier - */ - if (comma != arg) { - c = *comma; - *comma = '\0'; - - if (inet_pton(AF_INET6, arg, &addr) == 0 || !VALIDID(addr)) { - option_error("Illegal interface identifier (local): %s", arg); - return 0; - } - - if (option_priority >= prio_local) { - eui64_copy(addr.s6_addr32[2], wo->ourid); - wo->opt_local = 1; - prio_local = option_priority; - } - *comma = c; - } - - /* - * If comma last character, the no remote identifier - */ - if (*comma != 0 && *++comma != '\0') { - if (inet_pton(AF_INET6, comma, &addr) == 0 || !VALIDID(addr)) { - option_error("Illegal interface identifier (remote): %s", comma); - return 0; - } - if (option_priority >= prio_remote) { - eui64_copy(addr.s6_addr32[2], wo->hisid); - wo->opt_remote = 1; - prio_remote = option_priority; - } - } - - if (override_value("+ipv6", option_priority, option_source)) - ipv6cp_protent.enabled_flag = 1; - return 1; -} - -static void -printifaceid(opt, printer, arg) - option_t *opt; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - ipv6cp_options *wo = &ipv6cp_wantoptions[0]; - - if (wo->opt_local) - printer(arg, "%s", llv6_ntoa(wo->ourid)); - printer(arg, ","); - if (wo->opt_remote) - printer(arg, "%s", llv6_ntoa(wo->hisid)); -} - -/* - * Make a string representation of a network address. - */ -char * -llv6_ntoa(ifaceid) - eui64_t ifaceid; -{ - static char b[64]; - - sprintf(b, "fe80::%s", eui64_ntoa(ifaceid)); - return b; -} - - -/* - * ipv6cp_init - Initialize IPV6CP. - */ -static void -ipv6cp_init(unit) - int unit; -{ - fsm *f = &ipv6cp_fsm[unit]; - ipv6cp_options *wo = &ipv6cp_wantoptions[unit]; - ipv6cp_options *ao = &ipv6cp_allowoptions[unit]; - - f->unit = unit; - f->protocol = PPP_IPV6CP; - f->callbacks = &ipv6cp_callbacks; - fsm_init(&ipv6cp_fsm[unit]); - - memset(wo, 0, sizeof(*wo)); - memset(ao, 0, sizeof(*ao)); - - wo->accept_local = 1; - wo->neg_ifaceid = 1; - ao->neg_ifaceid = 1; - -#ifdef IPV6CP_COMP - wo->neg_vj = 1; - ao->neg_vj = 1; - wo->vj_protocol = IPV6CP_COMP; -#endif - -} - - -/* - * ipv6cp_open - IPV6CP is allowed to come up. - */ -static void -ipv6cp_open(unit) - int unit; -{ - fsm_open(&ipv6cp_fsm[unit]); -} - - -/* - * ipv6cp_close - Take IPV6CP down. - */ -static void -ipv6cp_close(unit, reason) - int unit; - char *reason; -{ - fsm_close(&ipv6cp_fsm[unit], reason); -} - - -/* - * ipv6cp_lowerup - The lower layer is up. - */ -static void -ipv6cp_lowerup(unit) - int unit; -{ - fsm_lowerup(&ipv6cp_fsm[unit]); -} - - -/* - * ipv6cp_lowerdown - The lower layer is down. - */ -static void -ipv6cp_lowerdown(unit) - int unit; -{ - fsm_lowerdown(&ipv6cp_fsm[unit]); -} - - -/* - * ipv6cp_input - Input IPV6CP packet. - */ -static void -ipv6cp_input(unit, p, len) - int unit; - u_char *p; - int len; -{ - fsm_input(&ipv6cp_fsm[unit], p, len); -} - - -/* - * ipv6cp_protrej - A Protocol-Reject was received for IPV6CP. - * - * Pretend the lower layer went down, so we shut up. - */ -static void -ipv6cp_protrej(unit) - int unit; -{ - fsm_lowerdown(&ipv6cp_fsm[unit]); -} - - -/* - * ipv6cp_resetci - Reset our CI. - */ -static void -ipv6cp_resetci(f) - fsm *f; -{ - ipv6cp_options *wo = &ipv6cp_wantoptions[f->unit]; - ipv6cp_options *go = &ipv6cp_gotoptions[f->unit]; - - wo->req_ifaceid = wo->neg_ifaceid && ipv6cp_allowoptions[f->unit].neg_ifaceid; - - if (!wo->opt_local) { - eui64_magic_nz(wo->ourid); - } - - *go = *wo; - eui64_zero(go->hisid); /* last proposed interface identifier */ -} - - -/* - * ipv6cp_cilen - Return length of our CI. - */ -static int -ipv6cp_cilen(f) - fsm *f; -{ - ipv6cp_options *go = &ipv6cp_gotoptions[f->unit]; - -#define LENCIVJ(neg) (neg ? CILEN_COMPRESS : 0) -#define LENCIIFACEID(neg) (neg ? CILEN_IFACEID : 0) - - return (LENCIIFACEID(go->neg_ifaceid) + - LENCIVJ(go->neg_vj)); -} - - -/* - * ipv6cp_addci - Add our desired CIs to a packet. - */ -static void -ipv6cp_addci(f, ucp, lenp) - fsm *f; - u_char *ucp; - int *lenp; -{ - ipv6cp_options *go = &ipv6cp_gotoptions[f->unit]; - int len = *lenp; - -#define ADDCIVJ(opt, neg, val) \ - if (neg) { \ - int vjlen = CILEN_COMPRESS; \ - if (len >= vjlen) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(vjlen, ucp); \ - PUTSHORT(val, ucp); \ - len -= vjlen; \ - } else \ - neg = 0; \ - } - -#define ADDCIIFACEID(opt, neg, val1) \ - if (neg) { \ - int idlen = CILEN_IFACEID; \ - if (len >= idlen) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(idlen, ucp); \ - eui64_put(val1, ucp); \ - len -= idlen; \ - } else \ - neg = 0; \ - } - - ADDCIIFACEID(CI_IFACEID, go->neg_ifaceid, go->ourid); - - ADDCIVJ(CI_COMPRESSTYPE, go->neg_vj, go->vj_protocol); - - *lenp -= len; -} - - -/* - * ipv6cp_ackci - Ack our CIs. - * - * Returns: - * 0 - Ack was bad. - * 1 - Ack was good. - */ -static int -ipv6cp_ackci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ipv6cp_options *go = &ipv6cp_gotoptions[f->unit]; - u_short cilen, citype, cishort; - eui64_t ifaceid; - - /* - * CIs must be in exactly the same order that we sent... - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ - -#define ACKCIVJ(opt, neg, val) \ - if (neg) { \ - int vjlen = CILEN_COMPRESS; \ - if ((len -= vjlen) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != vjlen || \ - citype != opt) \ - goto bad; \ - GETSHORT(cishort, p); \ - if (cishort != val) \ - goto bad; \ - } - -#define ACKCIIFACEID(opt, neg, val1) \ - if (neg) { \ - int idlen = CILEN_IFACEID; \ - if ((len -= idlen) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != idlen || \ - citype != opt) \ - goto bad; \ - eui64_get(ifaceid, p); \ - if (! eui64_equals(val1, ifaceid)) \ - goto bad; \ - } - - ACKCIIFACEID(CI_IFACEID, go->neg_ifaceid, go->ourid); - - ACKCIVJ(CI_COMPRESSTYPE, go->neg_vj, go->vj_protocol); - - /* - * If there are any remaining CIs, then this packet is bad. - */ - if (len != 0) - goto bad; - return (1); - -bad: - IPV6CPDEBUG(("ipv6cp_ackci: received bad Ack!")); - return (0); -} - -/* - * ipv6cp_nakci - Peer has sent a NAK for some of our CIs. - * This should not modify any state if the Nak is bad - * or if IPV6CP is in the OPENED state. - * - * Returns: - * 0 - Nak was bad. - * 1 - Nak was good. - */ -static int -ipv6cp_nakci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ipv6cp_options *go = &ipv6cp_gotoptions[f->unit]; - u_char citype, cilen, *next; - u_short cishort; - eui64_t ifaceid; - ipv6cp_options no; /* options we've seen Naks for */ - ipv6cp_options try; /* options to request next time */ - - BZERO(&no, sizeof(no)); - try = *go; - - /* - * Any Nak'd CIs must be in exactly the same order that we sent. - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ -#define NAKCIIFACEID(opt, neg, code) \ - if (go->neg && \ - len >= (cilen = CILEN_IFACEID) && \ - p[1] == cilen && \ - p[0] == opt) { \ - len -= cilen; \ - INCPTR(2, p); \ - eui64_get(ifaceid, p); \ - no.neg = 1; \ - code \ - } - -#define NAKCIVJ(opt, neg, code) \ - if (go->neg && \ - ((cilen = p[1]) == CILEN_COMPRESS) && \ - len >= cilen && \ - p[0] == opt) { \ - len -= cilen; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - no.neg = 1; \ - code \ - } - - /* - * Accept the peer's idea of {our,his} interface identifier, if different - * from our idea, only if the accept_{local,remote} flag is set. - */ - NAKCIIFACEID(CI_IFACEID, neg_ifaceid, - if (go->accept_local) { - while (eui64_iszero(ifaceid) || - eui64_equals(ifaceid, go->hisid)) /* bad luck */ - eui64_magic(ifaceid); - try.ourid = ifaceid; - IPV6CPDEBUG(("local LL address %s", llv6_ntoa(ifaceid))); - } - ); - -#ifdef IPV6CP_COMP - NAKCIVJ(CI_COMPRESSTYPE, neg_vj, - { - if (cishort == IPV6CP_COMP) { - try.vj_protocol = cishort; - } else { - try.neg_vj = 0; - } - } - ); -#else - NAKCIVJ(CI_COMPRESSTYPE, neg_vj, - { - try.neg_vj = 0; - } - ); -#endif - - /* - * There may be remaining CIs, if the peer is requesting negotiation - * on an option that we didn't include in our request packet. - * If they want to negotiate about interface identifier, we comply. - * If they want us to ask for compression, we refuse. - */ - while (len > CILEN_VOID) { - GETCHAR(citype, p); - GETCHAR(cilen, p); - if( (len -= cilen) < 0 ) - goto bad; - next = p + cilen - 2; - - switch (citype) { - case CI_COMPRESSTYPE: - if (go->neg_vj || no.neg_vj || - (cilen != CILEN_COMPRESS)) - goto bad; - no.neg_vj = 1; - break; - case CI_IFACEID: - if (go->neg_ifaceid || no.neg_ifaceid || cilen != CILEN_IFACEID) - goto bad; - try.neg_ifaceid = 1; - eui64_get(ifaceid, p); - if (go->accept_local) { - while (eui64_iszero(ifaceid) || - eui64_equals(ifaceid, go->hisid)) /* bad luck */ - eui64_magic(ifaceid); - try.ourid = ifaceid; - } - no.neg_ifaceid = 1; - break; - } - p = next; - } - - /* If there is still anything left, this packet is bad. */ - if (len != 0) - goto bad; - - /* - * OK, the Nak is good. Now we can update state. - */ - if (f->state != OPENED) - *go = try; - - return 1; - -bad: - IPV6CPDEBUG(("ipv6cp_nakci: received bad Nak!")); - return 0; -} - - -/* - * ipv6cp_rejci - Reject some of our CIs. - */ -static int -ipv6cp_rejci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - ipv6cp_options *go = &ipv6cp_gotoptions[f->unit]; - u_char cilen; - u_short cishort; - eui64_t ifaceid; - ipv6cp_options try; /* options to request next time */ - - try = *go; - /* - * Any Rejected CIs must be in exactly the same order that we sent. - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ -#define REJCIIFACEID(opt, neg, val1) \ - if (go->neg && \ - len >= (cilen = CILEN_IFACEID) && \ - p[1] == cilen && \ - p[0] == opt) { \ - len -= cilen; \ - INCPTR(2, p); \ - eui64_get(ifaceid, p); \ - /* Check rejected value. */ \ - if (! eui64_equals(ifaceid, val1)) \ - goto bad; \ - try.neg = 0; \ - } - -#define REJCIVJ(opt, neg, val) \ - if (go->neg && \ - p[1] == CILEN_COMPRESS && \ - len >= p[1] && \ - p[0] == opt) { \ - len -= p[1]; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - /* Check rejected value. */ \ - if (cishort != val) \ - goto bad; \ - try.neg = 0; \ - } - - REJCIIFACEID(CI_IFACEID, neg_ifaceid, go->ourid); - - REJCIVJ(CI_COMPRESSTYPE, neg_vj, go->vj_protocol); - - /* - * If there are any remaining CIs, then this packet is bad. - */ - if (len != 0) - goto bad; - /* - * Now we can update state. - */ - if (f->state != OPENED) - *go = try; - return 1; - -bad: - IPV6CPDEBUG(("ipv6cp_rejci: received bad Reject!")); - return 0; -} - - -/* - * ipv6cp_reqci - Check the peer's requested CIs and send appropriate response. - * - * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified - * appropriately. If reject_if_disagree is non-zero, doesn't return - * CONFNAK; returns CONFREJ if it can't return CONFACK. - */ -static int -ipv6cp_reqci(f, inp, len, reject_if_disagree) - fsm *f; - u_char *inp; /* Requested CIs */ - int *len; /* Length of requested CIs */ - int reject_if_disagree; -{ - ipv6cp_options *wo = &ipv6cp_wantoptions[f->unit]; - ipv6cp_options *ho = &ipv6cp_hisoptions[f->unit]; - ipv6cp_options *ao = &ipv6cp_allowoptions[f->unit]; - ipv6cp_options *go = &ipv6cp_gotoptions[f->unit]; - u_char *cip, *next; /* Pointer to current and next CIs */ - u_short cilen, citype; /* Parsed len, type */ - u_short cishort; /* Parsed short value */ - eui64_t ifaceid; /* Parsed interface identifier */ - int rc = CONFACK; /* Final packet return code */ - int orc; /* Individual option return code */ - u_char *p; /* Pointer to next char to parse */ - u_char *ucp = inp; /* Pointer to current output char */ - int l = *len; /* Length left */ - - /* - * Reset all his options. - */ - BZERO(ho, sizeof(*ho)); - - /* - * Process all his options. - */ - next = inp; - while (l) { - orc = CONFACK; /* Assume success */ - cip = p = next; /* Remember begining of CI */ - if (l < 2 || /* Not enough data for CI header or */ - p[1] < 2 || /* CI length too small or */ - p[1] > l) { /* CI length too big? */ - IPV6CPDEBUG(("ipv6cp_reqci: bad CI length!")); - orc = CONFREJ; /* Reject bad CI */ - cilen = l; /* Reject till end of packet */ - l = 0; /* Don't loop again */ - goto endswitch; - } - GETCHAR(citype, p); /* Parse CI type */ - GETCHAR(cilen, p); /* Parse CI length */ - l -= cilen; /* Adjust remaining length */ - next += cilen; /* Step to next CI */ - - switch (citype) { /* Check CI type */ - case CI_IFACEID: - IPV6CPDEBUG(("ipv6cp: received interface identifier ")); - - if (!ao->neg_ifaceid || - cilen != CILEN_IFACEID) { /* Check CI length */ - orc = CONFREJ; /* Reject CI */ - break; - } - - /* - * If he has no interface identifier, or if we both have same - * identifier then NAK it with new idea. - * In particular, if we don't know his identifier, but he does, - * then accept it. - */ - eui64_get(ifaceid, p); - IPV6CPDEBUG(("(%s)", llv6_ntoa(ifaceid))); - if (eui64_iszero(ifaceid) && eui64_iszero(go->ourid)) { - orc = CONFREJ; /* Reject CI */ - break; - } - if (!eui64_iszero(wo->hisid) && - !eui64_equals(ifaceid, wo->hisid) && - eui64_iszero(go->hisid)) { - - orc = CONFNAK; - ifaceid = wo->hisid; - go->hisid = ifaceid; - DECPTR(sizeof(ifaceid), p); - eui64_put(ifaceid, p); - } else - if (eui64_iszero(ifaceid) || eui64_equals(ifaceid, go->ourid)) { - orc = CONFNAK; - if (eui64_iszero(go->hisid)) /* first time, try option */ - ifaceid = wo->hisid; - while (eui64_iszero(ifaceid) || - eui64_equals(ifaceid, go->ourid)) /* bad luck */ - eui64_magic(ifaceid); - go->hisid = ifaceid; - DECPTR(sizeof(ifaceid), p); - eui64_put(ifaceid, p); - } - - ho->neg_ifaceid = 1; - ho->hisid = ifaceid; - break; - - case CI_COMPRESSTYPE: - IPV6CPDEBUG(("ipv6cp: received COMPRESSTYPE ")); - if (!ao->neg_vj || - (cilen != CILEN_COMPRESS)) { - orc = CONFREJ; - break; - } - GETSHORT(cishort, p); - IPV6CPDEBUG(("(%d)", cishort)); - -#ifdef IPV6CP_COMP - if (!(cishort == IPV6CP_COMP)) { - orc = CONFREJ; - break; - } - - ho->neg_vj = 1; - ho->vj_protocol = cishort; - break; -#else - orc = CONFREJ; - break; -#endif - - default: - orc = CONFREJ; - break; - } - -endswitch: - IPV6CPDEBUG((" (%s)\n", CODENAME(orc))); - - if (orc == CONFACK && /* Good CI */ - rc != CONFACK) /* but prior CI wasnt? */ - continue; /* Don't send this one */ - - if (orc == CONFNAK) { /* Nak this CI? */ - if (reject_if_disagree) /* Getting fed up with sending NAKs? */ - orc = CONFREJ; /* Get tough if so */ - else { - if (rc == CONFREJ) /* Rejecting prior CI? */ - continue; /* Don't send this one */ - if (rc == CONFACK) { /* Ack'd all prior CIs? */ - rc = CONFNAK; /* Not anymore... */ - ucp = inp; /* Backup */ - } - } - } - - if (orc == CONFREJ && /* Reject this CI */ - rc != CONFREJ) { /* but no prior ones? */ - rc = CONFREJ; - ucp = inp; /* Backup */ - } - - /* Need to move CI? */ - if (ucp != cip) - BCOPY(cip, ucp, cilen); /* Move it */ - - /* Update output pointer */ - INCPTR(cilen, ucp); - } - - /* - * If we aren't rejecting this packet, and we want to negotiate - * their identifier and they didn't send their identifier, then we - * send a NAK with a CI_IFACEID option appended. We assume the - * input buffer is long enough that we can append the extra - * option safely. - */ - if (rc != CONFREJ && !ho->neg_ifaceid && - wo->req_ifaceid && !reject_if_disagree) { - if (rc == CONFACK) { - rc = CONFNAK; - ucp = inp; /* reset pointer */ - wo->req_ifaceid = 0; /* don't ask again */ - } - PUTCHAR(CI_IFACEID, ucp); - PUTCHAR(CILEN_IFACEID, ucp); - eui64_put(wo->hisid, ucp); - } - - *len = ucp - inp; /* Compute output length */ - IPV6CPDEBUG(("ipv6cp: returning Configure-%s", CODENAME(rc))); - return (rc); /* Return final code */ -} - - -/* - * ipv6_check_options - check that any IP-related options are OK, - * and assign appropriate defaults. - */ -static void -ipv6_check_options() -{ - ipv6cp_options *wo = &ipv6cp_wantoptions[0]; - - if (!ipv6cp_protent.enabled_flag) - return; - -#if defined(SOL2) - /* - * Persistent link-local id is only used when user has not explicitly - * configure/hard-code the id - */ - if ((wo->use_persistent) && (!wo->opt_local) && (!wo->opt_remote)) { - - /* - * On systems where there are no Ethernet interfaces used, there - * may be other ways to obtain a persistent id. Right now, it - * will fall back to using magic [see eui64_magic] below when - * an EUI-48 from MAC address can't be obtained. Other possibilities - * include obtaining EEPROM serial numbers, or some other unique - * yet persistent number. On Sparc platforms, this is possible, - * but too bad there's no standards yet for x86 machines. - */ - if (ether_to_eui64(&wo->ourid)) { - wo->opt_local = 1; - } - } -#endif - - if (!wo->opt_local) { /* init interface identifier */ - if (wo->use_ip && eui64_iszero(wo->ourid)) { - eui64_setlo32(wo->ourid, ntohl(ipcp_wantoptions[0].ouraddr)); - if (!eui64_iszero(wo->ourid)) - wo->opt_local = 1; - } - - while (eui64_iszero(wo->ourid)) - eui64_magic(wo->ourid); - } - - if (!wo->opt_remote) { - if (wo->use_ip && eui64_iszero(wo->hisid)) { - eui64_setlo32(wo->hisid, ntohl(ipcp_wantoptions[0].hisaddr)); - if (!eui64_iszero(wo->hisid)) - wo->opt_remote = 1; - } - } - - if (demand && (eui64_iszero(wo->ourid) || eui64_iszero(wo->hisid))) { - option_error("local/remote LL address required for demand-dialling\n"); - exit(1); - } -} - - -/* - * ipv6_demand_conf - configure the interface as though - * IPV6CP were up, for use with dial-on-demand. - */ -static int -ipv6_demand_conf(u) - int u; -{ - ipv6cp_options *wo = &ipv6cp_wantoptions[u]; - -#if defined(__linux__) || defined(SOL2) || (defined(SVR4) && (defined(SNI) || defined(__USLC__))) -#if defined(SOL2) - if (!sif6up(u)) - return 0; -#else - if (!sifup(u)) - return 0; -#endif /* defined(SOL2) */ -#endif - if (!sif6addr(u, wo->ourid, wo->hisid)) - return 0; -#if !defined(__linux__) && !(defined(SVR4) && (defined(SNI) || defined(__USLC__))) - if (!sifup(u)) - return 0; -#endif - if (!sifnpmode(u, PPP_IPV6, NPMODE_QUEUE)) - return 0; - - notice("ipv6_demand_conf"); - notice("local LL address %s", llv6_ntoa(wo->ourid)); - notice("remote LL address %s", llv6_ntoa(wo->hisid)); - - return 1; -} - - -/* - * ipv6cp_up - IPV6CP has come UP. - * - * Configure the IPv6 network interface appropriately and bring it up. - */ -static void -ipv6cp_up(f) - fsm *f; -{ - ipv6cp_options *ho = &ipv6cp_hisoptions[f->unit]; - ipv6cp_options *go = &ipv6cp_gotoptions[f->unit]; - ipv6cp_options *wo = &ipv6cp_wantoptions[f->unit]; - - IPV6CPDEBUG(("ipv6cp: up")); - - /* - * We must have a non-zero LL address for both ends of the link. - */ - if (!ho->neg_ifaceid) - ho->hisid = wo->hisid; - - if(!no_ifaceid_neg) { - if (eui64_iszero(ho->hisid)) { - error("Could not determine remote LL address"); - ipv6cp_close(f->unit, "Could not determine remote LL address"); - return; - } - if (eui64_iszero(go->ourid)) { - error("Could not determine local LL address"); - ipv6cp_close(f->unit, "Could not determine local LL address"); - return; - } - if (eui64_equals(go->ourid, ho->hisid)) { - error("local and remote LL addresses are equal"); - ipv6cp_close(f->unit, "local and remote LL addresses are equal"); - return; - } - } - script_setenv("LLLOCAL", llv6_ntoa(go->ourid), 0); - script_setenv("LLREMOTE", llv6_ntoa(ho->hisid), 0); - -#ifdef IPV6CP_COMP - /* set tcp compression */ - sif6comp(f->unit, ho->neg_vj); -#endif - - /* - * If we are doing dial-on-demand, the interface is already - * configured, so we put out any saved-up packets, then set the - * interface to pass IPv6 packets. - */ - if (demand) { - if (! eui64_equals(go->ourid, wo->ourid) || - ! eui64_equals(ho->hisid, wo->hisid)) { - if (! eui64_equals(go->ourid, wo->ourid)) - warn("Local LL address changed to %s", - llv6_ntoa(go->ourid)); - if (! eui64_equals(ho->hisid, wo->hisid)) - warn("Remote LL address changed to %s", - llv6_ntoa(ho->hisid)); - ipv6cp_clear_addrs(f->unit, go->ourid, ho->hisid); - - /* Set the interface to the new addresses */ - if (!sif6addr(f->unit, go->ourid, ho->hisid)) { - if (debug) - warn("sif6addr failed"); - ipv6cp_close(f->unit, "Interface configuration failed"); - return; - } - - } - demand_rexmit(PPP_IPV6); - sifnpmode(f->unit, PPP_IPV6, NPMODE_PASS); - - } else { - /* - * Set LL addresses - */ -#if !defined(__linux__) && !defined(SOL2) && !(defined(SVR4) && (defined(SNI) || defined(__USLC__))) - if (!sif6addr(f->unit, go->ourid, ho->hisid)) { - if (debug) - warn("sif6addr failed"); - ipv6cp_close(f->unit, "Interface configuration failed"); - return; - } -#endif - - /* bring the interface up for IPv6 */ -#if defined(SOL2) - if (!sif6up(f->unit)) { - if (debug) - warn("sifup failed (IPV6)"); - ipv6cp_close(f->unit, "Interface configuration failed"); - return; - } -#else - if (!sifup(f->unit)) { - if (debug) - warn("sifup failed (IPV6)"); - ipv6cp_close(f->unit, "Interface configuration failed"); - return; - } -#endif /* defined(SOL2) */ - -#if defined(__linux__) || defined(SOL2) || (defined(SVR4) && (defined(SNI) || defined(__USLC__))) - if (!sif6addr(f->unit, go->ourid, ho->hisid)) { - if (debug) - warn("sif6addr failed"); - ipv6cp_close(f->unit, "Interface configuration failed"); - return; - } -#endif - sifnpmode(f->unit, PPP_IPV6, NPMODE_PASS); - - notice("local LL address %s", llv6_ntoa(go->ourid)); - notice("remote LL address %s", llv6_ntoa(ho->hisid)); - } - - np_up(f->unit, PPP_IPV6); - ipv6cp_is_up = 1; - - /* - * Execute the ipv6-up script, like this: - * /etc/ppp/ipv6-up interface tty speed local-LL remote-LL - */ - if (ipv6cp_script_state == s_down && ipv6cp_script_pid == 0) { - ipv6cp_script_state = s_up; - ipv6cp_script(_PATH_IPV6UP); - } -} - - -/* - * ipv6cp_down - IPV6CP has gone DOWN. - * - * Take the IPv6 network interface down, clear its addresses - * and delete routes through it. - */ -static void -ipv6cp_down(f) - fsm *f; -{ - IPV6CPDEBUG(("ipv6cp: down")); - update_link_stats(f->unit); - if (ipv6cp_is_up) { - ipv6cp_is_up = 0; - np_down(f->unit, PPP_IPV6); - } -#ifdef IPV6CP_COMP - sif6comp(f->unit, 0); -#endif - - /* - * If we are doing dial-on-demand, set the interface - * to queue up outgoing packets (for now). - */ - if (demand) { - sifnpmode(f->unit, PPP_IPV6, NPMODE_QUEUE); - } else { - sifnpmode(f->unit, PPP_IPV6, NPMODE_DROP); -#if !defined(__linux__) && !(defined(SVR4) && (defined(SNI) || defined(__USLC))) -#if defined(SOL2) - sif6down(f->unit); -#else - sifdown(f->unit); -#endif /* defined(SOL2) */ -#endif - ipv6cp_clear_addrs(f->unit, - ipv6cp_gotoptions[f->unit].ourid, - ipv6cp_hisoptions[f->unit].hisid); -#if defined(__linux__) || (defined(SVR4) && (defined(SNI) || defined(__USLC))) - sifdown(f->unit); -#endif - } - - /* Execute the ipv6-down script */ - if (ipv6cp_script_state == s_up && ipv6cp_script_pid == 0) { - ipv6cp_script_state = s_down; - ipv6cp_script(_PATH_IPV6DOWN); - } -} - - -/* - * ipv6cp_clear_addrs() - clear the interface addresses, routes, - * proxy neighbour discovery entries, etc. - */ -static void -ipv6cp_clear_addrs(unit, ourid, hisid) - int unit; - eui64_t ourid; - eui64_t hisid; -{ - cif6addr(unit, ourid, hisid); -} - - -/* - * ipv6cp_finished - possibly shut down the lower layers. - */ -static void -ipv6cp_finished(f) - fsm *f; -{ - np_finished(f->unit, PPP_IPV6); -} - - -/* - * ipv6cp_script_done - called when the ipv6-up or ipv6-down script - * has finished. - */ -static void -ipv6cp_script_done(arg) - void *arg; -{ - ipv6cp_script_pid = 0; - switch (ipv6cp_script_state) { - case s_up: - if (ipv6cp_fsm[0].state != OPENED) { - ipv6cp_script_state = s_down; - ipv6cp_script(_PATH_IPV6DOWN); - } - break; - case s_down: - if (ipv6cp_fsm[0].state == OPENED) { - ipv6cp_script_state = s_up; - ipv6cp_script(_PATH_IPV6UP); - } - break; - } -} - - -/* - * ipv6cp_script - Execute a script with arguments - * interface-name tty-name speed local-LL remote-LL. - */ -static void -ipv6cp_script(script) - char *script; -{ - char strspeed[32], strlocal[32], strremote[32]; - char *argv[8]; - - sprintf(strspeed, "%d", baud_rate); - strcpy(strlocal, llv6_ntoa(ipv6cp_gotoptions[0].ourid)); - strcpy(strremote, llv6_ntoa(ipv6cp_hisoptions[0].hisid)); - - argv[0] = script; - argv[1] = ifname; - argv[2] = devnam; - argv[3] = strspeed; - argv[4] = strlocal; - argv[5] = strremote; - argv[6] = ipparam; - argv[7] = NULL; - - ipv6cp_script_pid = run_program(script, argv, 0, ipv6cp_script_done, NULL); -} - -/* - * ipv6cp_printpkt - print the contents of an IPV6CP packet. - */ -static char *ipv6cp_codenames[] = { - "ConfReq", "ConfAck", "ConfNak", "ConfRej", - "TermReq", "TermAck", "CodeRej" -}; - -static int -ipv6cp_printpkt(p, plen, printer, arg) - u_char *p; - int plen; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int code, id, len, olen; - u_char *pstart, *optend; - u_short cishort; - eui64_t ifaceid; - - if (plen < HEADERLEN) - return 0; - pstart = p; - GETCHAR(code, p); - GETCHAR(id, p); - GETSHORT(len, p); - if (len < HEADERLEN || len > plen) - return 0; - - if (code >= 1 && code <= sizeof(ipv6cp_codenames) / sizeof(char *)) - printer(arg, " %s", ipv6cp_codenames[code-1]); - else - printer(arg, " code=0x%x", code); - printer(arg, " id=0x%x", id); - len -= HEADERLEN; - switch (code) { - case CONFREQ: - case CONFACK: - case CONFNAK: - case CONFREJ: - /* print option list */ - while (len >= 2) { - GETCHAR(code, p); - GETCHAR(olen, p); - p -= 2; - if (olen < 2 || olen > len) { - break; - } - printer(arg, " <"); - len -= olen; - optend = p + olen; - switch (code) { - case CI_COMPRESSTYPE: - if (olen >= CILEN_COMPRESS) { - p += 2; - GETSHORT(cishort, p); - printer(arg, "compress "); - printer(arg, "0x%x", cishort); - } - break; - case CI_IFACEID: - if (olen == CILEN_IFACEID) { - p += 2; - eui64_get(ifaceid, p); - printer(arg, "addr %s", llv6_ntoa(ifaceid)); - } - break; - } - while (p < optend) { - GETCHAR(code, p); - printer(arg, " %.2x", code); - } - printer(arg, ">"); - } - break; - - case TERMACK: - case TERMREQ: - if (len > 0 && *p >= ' ' && *p < 0x7f) { - printer(arg, " "); - print_string((char *)p, len, printer, arg); - p += len; - len = 0; - } - break; - } - - /* print the rest of the bytes in the packet */ - for (; len > 0; --len) { - GETCHAR(code, p); - printer(arg, " %.2x", code); - } - - return p - pstart; -} - -/* - * ipv6_active_pkt - see if this IP packet is worth bringing the link up for. - * We don't bring the link up for IP fragments or for TCP FIN packets - * with no data. - */ -#define IP6_HDRLEN 40 /* bytes */ -#define IP6_NHDR_FRAG 44 /* fragment IPv6 header */ -#define IPPROTO_TCP 6 -#define TCP_HDRLEN 20 -#define TH_FIN 0x01 - -/* - * We use these macros because the IP header may be at an odd address, - * and some compilers might use word loads to get th_off or ip_hl. - */ - -#define get_ip6nh(x) (((unsigned char *)(x))[6]) -#define get_tcpoff(x) (((unsigned char *)(x))[12] >> 4) -#define get_tcpflags(x) (((unsigned char *)(x))[13]) - -static int -ipv6_active_pkt(pkt, len) - u_char *pkt; - int len; -{ - u_char *tcp; - - len -= PPP_HDRLEN; - pkt += PPP_HDRLEN; - if (len < IP6_HDRLEN) - return 0; - if (get_ip6nh(pkt) == IP6_NHDR_FRAG) - return 0; - if (get_ip6nh(pkt) != IPPROTO_TCP) - return 1; - if (len < IP6_HDRLEN + TCP_HDRLEN) - return 0; - tcp = pkt + IP6_HDRLEN; - if ((get_tcpflags(tcp) & TH_FIN) != 0 && len == IP6_HDRLEN + get_tcpoff(tcp) * 4) - return 0; - return 1; -} diff --git a/mdk-stage1/ppp/pppd/ipv6cp.h b/mdk-stage1/ppp/pppd/ipv6cp.h deleted file mode 100644 index 60d366eb3..000000000 --- a/mdk-stage1/ppp/pppd/ipv6cp.h +++ /dev/null @@ -1,126 +0,0 @@ -/* - ipv6cp.h - PPP IPV6 Control Protocol. - Copyright (C) 1999 Tommi Komulainen <Tommi.Komulainen@iki.fi> - - Redistribution and use in source and binary forms are permitted - provided that the above copyright notice and this paragraph are - duplicated in all such forms. The name of the author may not be - used to endorse or promote products derived from this software - without specific prior written permission. - THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. -*/ - -/* Original version, based on RFC2023 : - - Copyright (c) 1995, 1996, 1997 Francis.Dupont@inria.fr, INRIA Rocquencourt, - Alain.Durand@imag.fr, IMAG, - Jean-Luc.Richier@imag.fr, IMAG-LSR. - - Copyright (c) 1998, 1999 Francis.Dupont@inria.fr, GIE DYADE, - Alain.Durand@imag.fr, IMAG, - Jean-Luc.Richier@imag.fr, IMAG-LSR. - - Ce travail a été fait au sein du GIE DYADE (Groupement d'Intérêt - Économique ayant pour membres BULL S.A. et l'INRIA). - - Ce logiciel informatique est disponible aux conditions - usuelles dans la recherche, c'est-à-dire qu'il peut - être utilisé, copié, modifié, distribué à l'unique - condition que ce texte soit conservé afin que - l'origine de ce logiciel soit reconnue. - - Le nom de l'Institut National de Recherche en Informatique - et en Automatique (INRIA), de l'IMAG, ou d'une personne morale - ou physique ayant participé à l'élaboration de ce logiciel ne peut - être utilisé sans son accord préalable explicite. - - Ce logiciel est fourni tel quel sans aucune garantie, - support ou responsabilité d'aucune sorte. - Ce logiciel est dérivé de sources d'origine - "University of California at Berkeley" et - "Digital Equipment Corporation" couvertes par des copyrights. - - L'Institut d'Informatique et de Mathématiques Appliquées de Grenoble (IMAG) - est une fédération d'unités mixtes de recherche du CNRS, de l'Institut National - Polytechnique de Grenoble et de l'Université Joseph Fourier regroupant - sept laboratoires dont le laboratoire Logiciels, Systèmes, Réseaux (LSR). - - This work has been done in the context of GIE DYADE (joint R & D venture - between BULL S.A. and INRIA). - - This software is available with usual "research" terms - with the aim of retain credits of the software. - Permission to use, copy, modify and distribute this software for any - purpose and without fee is hereby granted, provided that the above - copyright notice and this permission notice appear in all copies, - and the name of INRIA, IMAG, or any contributor not be used in advertising - or publicity pertaining to this material without the prior explicit - permission. The software is provided "as is" without any - warranties, support or liabilities of any kind. - This software is derived from source code from - "University of California at Berkeley" and - "Digital Equipment Corporation" protected by copyrights. - - Grenoble's Institute of Computer Science and Applied Mathematics (IMAG) - is a federation of seven research units funded by the CNRS, National - Polytechnic Institute of Grenoble and University Joseph Fourier. - The research unit in Software, Systems, Networks (LSR) is member of IMAG. -*/ - -/* - * Derived from : - * - * - * ipcp.h - IP Control Protocol definitions. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -/* - * Options. - */ -#define CI_IFACEID 1 /* Interface Identifier */ -#define CI_COMPRESSTYPE 2 /* Compression Type */ - -/* No compression types yet defined. - *#define IPV6CP_COMP 0x004f - */ -typedef struct ipv6cp_options { - int neg_ifaceid; /* Negotiate interface identifier? */ - int req_ifaceid; /* Ask peer to send interface identifier? */ - int accept_local; /* accept peer's value for iface id? */ - int opt_local; /* ourtoken set by option */ - int opt_remote; /* histoken set by option */ - int use_ip; /* use IP as interface identifier */ -#if defined(SOL2) - int use_persistent; /* use uniquely persistent value for address */ -#endif /* defined(SOL2) */ - int neg_vj; /* Van Jacobson Compression? */ - u_short vj_protocol; /* protocol value to use in VJ option */ - eui64_t ourid, hisid; /* Interface identifiers */ -} ipv6cp_options; - -extern fsm ipv6cp_fsm[]; -extern ipv6cp_options ipv6cp_wantoptions[]; -extern ipv6cp_options ipv6cp_gotoptions[]; -extern ipv6cp_options ipv6cp_allowoptions[]; -extern ipv6cp_options ipv6cp_hisoptions[]; - -extern struct protent ipv6cp_protent; diff --git a/mdk-stage1/ppp/pppd/ipxcp.c b/mdk-stage1/ppp/pppd/ipxcp.c deleted file mode 100644 index f9a12b934..000000000 --- a/mdk-stage1/ppp/pppd/ipxcp.c +++ /dev/null @@ -1,1570 +0,0 @@ -/* - * ipxcp.c - PPP IPX Control Protocol. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#ifdef IPX_CHANGE - -#define RCSID "$Id$" - -/* - * TODO: - */ - -#include <stdio.h> -#include <string.h> -#include <unistd.h> -#include <ctype.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> - -#include "pppd.h" -#include "fsm.h" -#include "ipxcp.h" -#include "pathnames.h" -#include "magic.h" - -static const char rcsid[] = RCSID; - -/* global vars */ -ipxcp_options ipxcp_wantoptions[NUM_PPP]; /* Options that we want to request */ -ipxcp_options ipxcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */ -ipxcp_options ipxcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */ -ipxcp_options ipxcp_hisoptions[NUM_PPP]; /* Options that we ack'd */ - -#define wo (&ipxcp_wantoptions[0]) -#define ao (&ipxcp_allowoptions[0]) -#define go (&ipxcp_gotoptions[0]) -#define ho (&ipxcp_hisoptions[0]) - -/* - * Callbacks for fsm code. (CI = Configuration Information) - */ -static void ipxcp_resetci __P((fsm *)); /* Reset our CI */ -static int ipxcp_cilen __P((fsm *)); /* Return length of our CI */ -static void ipxcp_addci __P((fsm *, u_char *, int *)); /* Add our CI */ -static int ipxcp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */ -static int ipxcp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */ -static int ipxcp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */ -static int ipxcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */ -static void ipxcp_up __P((fsm *)); /* We're UP */ -static void ipxcp_down __P((fsm *)); /* We're DOWN */ -static void ipxcp_finished __P((fsm *)); /* Don't need lower layer */ -static void ipxcp_script __P((fsm *, char *)); /* Run an up/down script */ - -fsm ipxcp_fsm[NUM_PPP]; /* IPXCP fsm structure */ - -static fsm_callbacks ipxcp_callbacks = { /* IPXCP callback routines */ - ipxcp_resetci, /* Reset our Configuration Information */ - ipxcp_cilen, /* Length of our Configuration Information */ - ipxcp_addci, /* Add our Configuration Information */ - ipxcp_ackci, /* ACK our Configuration Information */ - ipxcp_nakci, /* NAK our Configuration Information */ - ipxcp_rejci, /* Reject our Configuration Information */ - ipxcp_reqci, /* Request peer's Configuration Information */ - ipxcp_up, /* Called when fsm reaches OPENED state */ - ipxcp_down, /* Called when fsm leaves OPENED state */ - NULL, /* Called when we want the lower layer up */ - ipxcp_finished, /* Called when we want the lower layer down */ - NULL, /* Called when Protocol-Reject received */ - NULL, /* Retransmission is necessary */ - NULL, /* Called to handle protocol-specific codes */ - "IPXCP" /* String name of protocol */ -}; - -/* - * Command-line options. - */ -static int setipxnode __P((char **)); -static void printipxnode __P((option_t *, - void (*)(void *, char *, ...), void *)); -static int setipxname __P((char **)); - -static option_t ipxcp_option_list[] = { - { "ipx", o_bool, &ipxcp_protent.enabled_flag, - "Enable IPXCP (and IPX)", OPT_PRIO | 1 }, - { "+ipx", o_bool, &ipxcp_protent.enabled_flag, - "Enable IPXCP (and IPX)", OPT_PRIOSUB | OPT_ALIAS | 1 }, - { "noipx", o_bool, &ipxcp_protent.enabled_flag, - "Disable IPXCP (and IPX)", OPT_PRIOSUB }, - { "-ipx", o_bool, &ipxcp_protent.enabled_flag, - "Disable IPXCP (and IPX)", OPT_PRIOSUB | OPT_ALIAS }, - - { "ipx-network", o_uint32, &ipxcp_wantoptions[0].our_network, - "Set our IPX network number", OPT_PRIO, &ipxcp_wantoptions[0].neg_nn }, - - { "ipxcp-accept-network", o_bool, &ipxcp_wantoptions[0].accept_network, - "Accept peer IPX network number", 1, - &ipxcp_allowoptions[0].accept_network }, - - { "ipx-node", o_special, (void *)setipxnode, - "Set IPX node number", OPT_A2PRINTER, (void *)printipxnode }, - - { "ipxcp-accept-local", o_bool, &ipxcp_wantoptions[0].accept_local, - "Accept our IPX address", 1, - &ipxcp_allowoptions[0].accept_local }, - - { "ipxcp-accept-remote", o_bool, &ipxcp_wantoptions[0].accept_remote, - "Accept peer's IPX address", 1, - &ipxcp_allowoptions[0].accept_remote }, - - { "ipx-routing", o_int, &ipxcp_wantoptions[0].router, - "Set IPX routing proto number", OPT_PRIO, - &ipxcp_wantoptions[0].neg_router }, - - { "ipx-router-name", o_special, setipxname, - "Set IPX router name", OPT_PRIO | OPT_A2STRVAL | OPT_STATIC, - &ipxcp_wantoptions[0].name }, - - { "ipxcp-restart", o_int, &ipxcp_fsm[0].timeouttime, - "Set timeout for IPXCP", OPT_PRIO }, - { "ipxcp-max-terminate", o_int, &ipxcp_fsm[0].maxtermtransmits, - "Set max #xmits for IPXCP term-reqs", OPT_PRIO }, - { "ipxcp-max-configure", o_int, &ipxcp_fsm[0].maxconfreqtransmits, - "Set max #xmits for IPXCP conf-reqs", OPT_PRIO }, - { "ipxcp-max-failure", o_int, &ipxcp_fsm[0].maxnakloops, - "Set max #conf-naks for IPXCP", OPT_PRIO }, - - { NULL } -}; - -/* - * Protocol entry points. - */ - -static void ipxcp_init __P((int)); -static void ipxcp_open __P((int)); -static void ipxcp_close __P((int, char *)); -static void ipxcp_lowerup __P((int)); -static void ipxcp_lowerdown __P((int)); -static void ipxcp_input __P((int, u_char *, int)); -static void ipxcp_protrej __P((int)); -static int ipxcp_printpkt __P((u_char *, int, - void (*) __P((void *, char *, ...)), void *)); - -struct protent ipxcp_protent = { - PPP_IPXCP, - ipxcp_init, - ipxcp_input, - ipxcp_protrej, - ipxcp_lowerup, - ipxcp_lowerdown, - ipxcp_open, - ipxcp_close, - ipxcp_printpkt, - NULL, - 0, - "IPXCP", - "IPX", - ipxcp_option_list, - NULL, - NULL, - NULL -}; - -/* - * Lengths of configuration options. - */ - -#define CILEN_VOID 2 -#define CILEN_COMPLETE 2 /* length of complete option */ -#define CILEN_NETN 6 /* network number length option */ -#define CILEN_NODEN 8 /* node number length option */ -#define CILEN_PROTOCOL 4 /* Minimum length of routing protocol */ -#define CILEN_NAME 3 /* Minimum length of router name */ -#define CILEN_COMPRESS 4 /* Minimum length of compression protocol */ - -#define CODENAME(x) ((x) == CONFACK ? "ACK" : \ - (x) == CONFNAK ? "NAK" : "REJ") - -static int ipxcp_is_up; - -static char *ipx_ntoa __P((u_int32_t)); - -/* Used in printing the node number */ -#define NODE(base) base[0], base[1], base[2], base[3], base[4], base[5] - -/* Used to generate the proper bit mask */ -#define BIT(num) (1 << (num)) - -/* - * Convert from internal to external notation - */ - -static short int -to_external(internal) -short int internal; -{ - short int external; - - if (internal & BIT(IPX_NONE) ) - external = IPX_NONE; - else - external = RIP_SAP; - - return external; -} - -/* - * Make a string representation of a network IP address. - */ - -static char * -ipx_ntoa(ipxaddr) -u_int32_t ipxaddr; -{ - static char b[64]; - slprintf(b, sizeof(b), "%x", ipxaddr); - return b; -} - - -static u_char * -setipxnodevalue(src,dst) -u_char *src, *dst; -{ - int indx; - int item; - - for (;;) { - if (!isxdigit (*src)) - break; - - for (indx = 0; indx < 5; ++indx) { - dst[indx] <<= 4; - dst[indx] |= (dst[indx + 1] >> 4) & 0x0F; - } - - item = toupper (*src) - '0'; - if (item > 9) - item -= 7; - - dst[5] = (dst[5] << 4) | item; - ++src; - } - return src; -} - -static int ipx_prio_our, ipx_prio_his; - -static int -setipxnode(argv) - char **argv; -{ - char *end; - int have_his = 0; - u_char our_node[6]; - u_char his_node[6]; - - memset (our_node, 0, 6); - memset (his_node, 0, 6); - - end = setipxnodevalue (*argv, our_node); - if (*end == ':') { - have_his = 1; - end = setipxnodevalue (++end, his_node); - } - - if (*end == '\0') { - ipxcp_wantoptions[0].neg_node = 1; - if (option_priority >= ipx_prio_our) { - memcpy(&ipxcp_wantoptions[0].our_node[0], our_node, 6); - ipx_prio_our = option_priority; - } - if (have_his && option_priority >= ipx_prio_his) { - memcpy(&ipxcp_wantoptions[0].his_node[0], his_node, 6); - ipx_prio_his = option_priority; - } - return 1; - } - - option_error("invalid parameter '%s' for ipx-node option", *argv); - return 0; -} - -static void -printipxnode(opt, printer, arg) - option_t *opt; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - unsigned char *p; - - p = ipxcp_wantoptions[0].our_node; - if (ipx_prio_our) - printer(arg, "%.2x%.2x%.2x%.2x%.2x%.2x", - p[0], p[1], p[2], p[3], p[4], p[5]); - printer(arg, ":"); - p = ipxcp_wantoptions[0].his_node; - if (ipx_prio_his) - printer(arg, "%.2x%.2x%.2x%.2x%.2x%.2x", - p[0], p[1], p[2], p[3], p[4], p[5]); -} - -static int -setipxname (argv) - char **argv; -{ - char *dest = ipxcp_wantoptions[0].name; - char *src = *argv; - int count; - char ch; - - ipxcp_wantoptions[0].neg_name = 1; - ipxcp_allowoptions[0].neg_name = 1; - memset (dest, '\0', sizeof (ipxcp_wantoptions[0].name)); - - count = 0; - while (*src) { - ch = *src++; - if (! isalnum (ch) && ch != '_') { - option_error("IPX router name must be alphanumeric or _"); - return 0; - } - - if (count >= sizeof (ipxcp_wantoptions[0].name) - 1) { - option_error("IPX router name is limited to %d characters", - sizeof (ipxcp_wantoptions[0].name) - 1); - return 0; - } - - dest[count++] = toupper (ch); - } - dest[count] = 0; - - return 1; -} - -/* - * ipxcp_init - Initialize IPXCP. - */ -static void -ipxcp_init(unit) - int unit; -{ - fsm *f = &ipxcp_fsm[unit]; - - f->unit = unit; - f->protocol = PPP_IPXCP; - f->callbacks = &ipxcp_callbacks; - fsm_init(&ipxcp_fsm[unit]); - - memset (wo->name, 0, sizeof (wo->name)); - memset (wo->our_node, 0, sizeof (wo->our_node)); - memset (wo->his_node, 0, sizeof (wo->his_node)); - - wo->neg_nn = 1; - wo->neg_complete = 1; - wo->network = 0; - - ao->neg_node = 1; - ao->neg_nn = 1; - ao->neg_name = 1; - ao->neg_complete = 1; - ao->neg_router = 1; - - ao->accept_local = 0; - ao->accept_remote = 0; - ao->accept_network = 0; - - wo->tried_rip = 0; - wo->tried_nlsp = 0; -} - -/* - * Copy the node number - */ - -static void -copy_node (src, dst) -u_char *src, *dst; -{ - memcpy (dst, src, sizeof (ipxcp_wantoptions[0].our_node)); -} - -/* - * Compare node numbers - */ - -static int -compare_node (src, dst) -u_char *src, *dst; -{ - return memcmp (dst, src, sizeof (ipxcp_wantoptions[0].our_node)) == 0; -} - -/* - * Is the node number zero? - */ - -static int -zero_node (node) -u_char *node; -{ - int indx; - for (indx = 0; indx < sizeof (ipxcp_wantoptions[0].our_node); ++indx) - if (node [indx] != 0) - return 0; - return 1; -} - -/* - * Increment the node number - */ - -static void -inc_node (node) -u_char *node; -{ - u_char *outp; - u_int32_t magic_num; - - outp = node; - magic_num = magic(); - *outp++ = '\0'; - *outp++ = '\0'; - PUTLONG (magic_num, outp); -} - -/* - * ipxcp_open - IPXCP is allowed to come up. - */ -static void -ipxcp_open(unit) - int unit; -{ - fsm_open(&ipxcp_fsm[unit]); -} - -/* - * ipxcp_close - Take IPXCP down. - */ -static void -ipxcp_close(unit, reason) - int unit; - char *reason; -{ - fsm_close(&ipxcp_fsm[unit], reason); -} - - -/* - * ipxcp_lowerup - The lower layer is up. - */ -static void -ipxcp_lowerup(unit) - int unit; -{ - fsm_lowerup(&ipxcp_fsm[unit]); -} - - -/* - * ipxcp_lowerdown - The lower layer is down. - */ -static void -ipxcp_lowerdown(unit) - int unit; -{ - fsm_lowerdown(&ipxcp_fsm[unit]); -} - - -/* - * ipxcp_input - Input IPXCP packet. - */ -static void -ipxcp_input(unit, p, len) - int unit; - u_char *p; - int len; -{ - fsm_input(&ipxcp_fsm[unit], p, len); -} - - -/* - * ipxcp_protrej - A Protocol-Reject was received for IPXCP. - * - * Pretend the lower layer went down, so we shut up. - */ -static void -ipxcp_protrej(unit) - int unit; -{ - fsm_lowerdown(&ipxcp_fsm[unit]); -} - - -/* - * ipxcp_resetci - Reset our CI. - */ -static void -ipxcp_resetci(f) - fsm *f; -{ - wo->req_node = wo->neg_node && ao->neg_node; - wo->req_nn = wo->neg_nn && ao->neg_nn; - - if (wo->our_network == 0) { - wo->neg_node = 1; - ao->accept_network = 1; - } -/* - * If our node number is zero then change it. - */ - if (zero_node (wo->our_node)) { - inc_node (wo->our_node); - ao->accept_local = 1; - wo->neg_node = 1; - } -/* - * If his node number is zero then change it. - */ - if (zero_node (wo->his_node)) { - inc_node (wo->his_node); - ao->accept_remote = 1; - } -/* - * If no routing agent was specified then we do RIP/SAP according to the - * RFC documents. If you have specified something then OK. Otherwise, we - * do RIP/SAP. - */ - if (ao->router == 0) { - ao->router |= BIT(RIP_SAP); - wo->router |= BIT(RIP_SAP); - } - - /* Always specify a routing protocol unless it was REJected. */ - wo->neg_router = 1; -/* - * Start with these default values - */ - *go = *wo; -} - -/* - * ipxcp_cilen - Return length of our CI. - */ - -static int -ipxcp_cilen(f) - fsm *f; -{ - int len; - - len = go->neg_nn ? CILEN_NETN : 0; - len += go->neg_node ? CILEN_NODEN : 0; - len += go->neg_name ? CILEN_NAME + strlen (go->name) - 1 : 0; - - /* RFC says that defaults should not be included. */ - if (go->neg_router && to_external(go->router) != RIP_SAP) - len += CILEN_PROTOCOL; - - return (len); -} - - -/* - * ipxcp_addci - Add our desired CIs to a packet. - */ -static void -ipxcp_addci(f, ucp, lenp) - fsm *f; - u_char *ucp; - int *lenp; -{ -/* - * Add the options to the record. - */ - if (go->neg_nn) { - PUTCHAR (IPX_NETWORK_NUMBER, ucp); - PUTCHAR (CILEN_NETN, ucp); - PUTLONG (go->our_network, ucp); - } - - if (go->neg_node) { - int indx; - PUTCHAR (IPX_NODE_NUMBER, ucp); - PUTCHAR (CILEN_NODEN, ucp); - for (indx = 0; indx < sizeof (go->our_node); ++indx) - PUTCHAR (go->our_node[indx], ucp); - } - - if (go->neg_name) { - int cilen = strlen (go->name); - int indx; - PUTCHAR (IPX_ROUTER_NAME, ucp); - PUTCHAR (CILEN_NAME + cilen - 1, ucp); - for (indx = 0; indx < cilen; ++indx) - PUTCHAR (go->name [indx], ucp); - } - - if (go->neg_router) { - short external = to_external (go->router); - if (external != RIP_SAP) { - PUTCHAR (IPX_ROUTER_PROTOCOL, ucp); - PUTCHAR (CILEN_PROTOCOL, ucp); - PUTSHORT (external, ucp); - } - } -} - -/* - * ipxcp_ackci - Ack our CIs. - * - * Returns: - * 0 - Ack was bad. - * 1 - Ack was good. - */ -static int -ipxcp_ackci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - u_short cilen, citype, cishort; - u_char cichar; - u_int32_t cilong; - -#define ACKCIVOID(opt, neg) \ - if (neg) { \ - if ((len -= CILEN_VOID) < 0) \ - break; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_VOID || \ - citype != opt) \ - break; \ - } - -#define ACKCICOMPLETE(opt,neg) ACKCIVOID(opt, neg) - -#define ACKCICHARS(opt, neg, val, cnt) \ - if (neg) { \ - int indx, count = cnt; \ - len -= (count + 2); \ - if (len < 0) \ - break; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != (count + 2) || \ - citype != opt) \ - break; \ - for (indx = 0; indx < count; ++indx) {\ - GETCHAR(cichar, p); \ - if (cichar != ((u_char *) &val)[indx]) \ - break; \ - }\ - if (indx != count) \ - break; \ - } - -#define ACKCINODE(opt,neg,val) ACKCICHARS(opt,neg,val,sizeof(val)) -#define ACKCINAME(opt,neg,val) ACKCICHARS(opt,neg,val,strlen(val)) - -#define ACKCINETWORK(opt, neg, val) \ - if (neg) { \ - if ((len -= CILEN_NETN) < 0) \ - break; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_NETN || \ - citype != opt) \ - break; \ - GETLONG(cilong, p); \ - if (cilong != val) \ - break; \ - } - -#define ACKCIPROTO(opt, neg, val) \ - if (neg) { \ - if (len < 2) \ - break; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_PROTOCOL || citype != opt) \ - break; \ - len -= cilen; \ - if (len < 0) \ - break; \ - GETSHORT(cishort, p); \ - if (cishort != to_external (val) || cishort == RIP_SAP) \ - break; \ - } -/* - * Process the ACK frame in the order in which the frame was assembled - */ - do { - ACKCINETWORK (IPX_NETWORK_NUMBER, go->neg_nn, go->our_network); - ACKCINODE (IPX_NODE_NUMBER, go->neg_node, go->our_node); - ACKCINAME (IPX_ROUTER_NAME, go->neg_name, go->name); - if (len > 0) - ACKCIPROTO (IPX_ROUTER_PROTOCOL, go->neg_router, go->router); -/* - * This is the end of the record. - */ - if (len == 0) - return (1); - } while (0); -/* - * The frame is invalid - */ - IPXCPDEBUG(("ipxcp_ackci: received bad Ack!")); - return (0); -} - -/* - * ipxcp_nakci - Peer has sent a NAK for some of our CIs. - * This should not modify any state if the Nak is bad - * or if IPXCP is in the OPENED state. - * - * Returns: - * 0 - Nak was bad. - * 1 - Nak was good. - */ - -static int -ipxcp_nakci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - u_char citype, cilen, *next; - u_short s; - u_int32_t l; - ipxcp_options no; /* options we've seen Naks for */ - ipxcp_options try; /* options to request next time */ - - BZERO(&no, sizeof(no)); - try = *go; - - while (len > CILEN_VOID) { - GETCHAR (citype, p); - GETCHAR (cilen, p); - len -= cilen; - if (len < 0) - goto bad; - next = &p [cilen - CILEN_VOID]; - - switch (citype) { - case IPX_NETWORK_NUMBER: - if (!go->neg_nn || no.neg_nn || (cilen != CILEN_NETN)) - goto bad; - no.neg_nn = 1; - - GETLONG(l, p); - if (l && ao->accept_network) - try.our_network = l; - break; - - case IPX_NODE_NUMBER: - if (!go->neg_node || no.neg_node || (cilen != CILEN_NODEN)) - goto bad; - no.neg_node = 1; - - if (!zero_node (p) && ao->accept_local && - ! compare_node (p, ho->his_node)) - copy_node (p, try.our_node); - break; - - /* This has never been sent. Ignore the NAK frame */ - case IPX_COMPRESSION_PROTOCOL: - goto bad; - - case IPX_ROUTER_PROTOCOL: - if (!go->neg_router || (cilen < CILEN_PROTOCOL)) - goto bad; - - GETSHORT (s, p); - if (s > 15) /* This is just bad, but ignore for now. */ - break; - - s = BIT(s); - if (no.router & s) /* duplicate NAKs are always bad */ - goto bad; - - if (no.router == 0) /* Reset on first NAK only */ - try.router = 0; - - no.router |= s; - try.router |= s; - try.neg_router = 1; - break; - - /* These, according to the RFC, must never be NAKed. */ - case IPX_ROUTER_NAME: - case IPX_COMPLETE: - goto bad; - - /* These are for options which we have not seen. */ - default: - break; - } - p = next; - } - - /* - * Do not permit the peer to force a router protocol which we do not - * support. However, default to the condition that will accept "NONE". - */ - try.router &= (ao->router | BIT(IPX_NONE)); - if (try.router == 0 && ao->router != 0) - try.router = BIT(IPX_NONE); - - if (try.router != 0) - try.neg_router = 1; - - /* - * OK, the Nak is good. Now we can update state. - * If there are any options left, we ignore them. - */ - if (f->state != OPENED) - *go = try; - - return 1; - -bad: - IPXCPDEBUG(("ipxcp_nakci: received bad Nak!")); - return 0; -} - -/* - * ipxcp_rejci - Reject some of our CIs. - */ -static int -ipxcp_rejci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - u_short cilen, citype, cishort; - u_char cichar; - u_int32_t cilong; - ipxcp_options try; /* options to request next time */ - -#define REJCINETWORK(opt, neg, val) \ - if (neg && p[0] == opt) { \ - if ((len -= CILEN_NETN) < 0) \ - break; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_NETN || \ - citype != opt) \ - break; \ - GETLONG(cilong, p); \ - if (cilong != val) \ - break; \ - neg = 0; \ - } - -#define REJCICHARS(opt, neg, val, cnt) \ - if (neg && p[0] == opt) { \ - int indx, count = cnt; \ - len -= (count + 2); \ - if (len < 0) \ - break; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != (count + 2) || \ - citype != opt) \ - break; \ - for (indx = 0; indx < count; ++indx) {\ - GETCHAR(cichar, p); \ - if (cichar != ((u_char *) &val)[indx]) \ - break; \ - }\ - if (indx != count) \ - break; \ - neg = 0; \ - } - -#define REJCINODE(opt,neg,val) REJCICHARS(opt,neg,val,sizeof(val)) -#define REJCINAME(opt,neg,val) REJCICHARS(opt,neg,val,strlen(val)) - -#define REJCIVOID(opt, neg) \ - if (neg && p[0] == opt) { \ - if ((len -= CILEN_VOID) < 0) \ - break; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_VOID || citype != opt) \ - break; \ - neg = 0; \ - } - -/* a reject for RIP/SAP is invalid since we don't send it and you can't - reject something which is not sent. (You can NAK, but you can't REJ.) */ -#define REJCIPROTO(opt, neg, val, bit) \ - if (neg && p[0] == opt) { \ - if ((len -= CILEN_PROTOCOL) < 0) \ - break; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_PROTOCOL) \ - break; \ - GETSHORT(cishort, p); \ - if (cishort != to_external (val) || cishort == RIP_SAP) \ - break; \ - neg = 0; \ - } -/* - * Any Rejected CIs must be in exactly the same order that we sent. - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ - try = *go; - - do { - REJCINETWORK (IPX_NETWORK_NUMBER, try.neg_nn, try.our_network); - REJCINODE (IPX_NODE_NUMBER, try.neg_node, try.our_node); - REJCINAME (IPX_ROUTER_NAME, try.neg_name, try.name); - REJCIPROTO (IPX_ROUTER_PROTOCOL, try.neg_router, try.router, 0); -/* - * This is the end of the record. - */ - if (len == 0) { - if (f->state != OPENED) - *go = try; - return (1); - } - } while (0); -/* - * The frame is invalid at this point. - */ - IPXCPDEBUG(("ipxcp_rejci: received bad Reject!")); - return 0; -} - -/* - * ipxcp_reqci - Check the peer's requested CIs and send appropriate response. - * - * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified - * appropriately. If reject_if_disagree is non-zero, doesn't return - * CONFNAK; returns CONFREJ if it can't return CONFACK. - */ -static int -ipxcp_reqci(f, inp, len, reject_if_disagree) - fsm *f; - u_char *inp; /* Requested CIs */ - int *len; /* Length of requested CIs */ - int reject_if_disagree; -{ - u_char *cip, *next; /* Pointer to current and next CIs */ - u_short cilen, citype; /* Parsed len, type */ - u_short cishort; /* Parsed short value */ - u_int32_t cinetwork; /* Parsed address values */ - int rc = CONFACK; /* Final packet return code */ - int orc; /* Individual option return code */ - u_char *p; /* Pointer to next char to parse */ - u_char *ucp = inp; /* Pointer to current output char */ - int l = *len; /* Length left */ - - /* - * Reset all his options. - */ - BZERO(ho, sizeof(*ho)); - - /* - * Process all his options. - */ - next = inp; - while (l) { - orc = CONFACK; /* Assume success */ - cip = p = next; /* Remember begining of CI */ - if (l < 2 || /* Not enough data for CI header or */ - p[1] < 2 || /* CI length too small or */ - p[1] > l) { /* CI length too big? */ - IPXCPDEBUG(("ipxcp_reqci: bad CI length!")); - orc = CONFREJ; /* Reject bad CI */ - cilen = l; /* Reject till end of packet */ - l = 0; /* Don't loop again */ - goto endswitch; - } - GETCHAR(citype, p); /* Parse CI type */ - GETCHAR(cilen, p); /* Parse CI length */ - l -= cilen; /* Adjust remaining length */ - next += cilen; /* Step to next CI */ - - switch (citype) { /* Check CI type */ -/* - * The network number must match. Choose the larger of the two. - */ - case IPX_NETWORK_NUMBER: - /* if we wont negotiate the network number or the length is wrong - then reject the option */ - if ( !ao->neg_nn || cilen != CILEN_NETN ) { - orc = CONFREJ; - break; - } - GETLONG(cinetwork, p); - - /* If the network numbers match then acknowledge them. */ - if (cinetwork != 0) { - ho->his_network = cinetwork; - ho->neg_nn = 1; - if (wo->our_network == cinetwork) - break; -/* - * If the network number is not given or we don't accept their change or - * the network number is too small then NAK it. - */ - if (! ao->accept_network || cinetwork < wo->our_network) { - DECPTR (sizeof (u_int32_t), p); - PUTLONG (wo->our_network, p); - orc = CONFNAK; - } - break; - } -/* - * The peer sent '0' for the network. Give it ours if we have one. - */ - if (go->our_network != 0) { - DECPTR (sizeof (u_int32_t), p); - PUTLONG (wo->our_network, p); - orc = CONFNAK; -/* - * We don't have one. Reject the value. - */ - } else - orc = CONFREJ; - - break; -/* - * The node number is required - */ - case IPX_NODE_NUMBER: - /* if we wont negotiate the node number or the length is wrong - then reject the option */ - if ( cilen != CILEN_NODEN ) { - orc = CONFREJ; - break; - } - - copy_node (p, ho->his_node); - ho->neg_node = 1; -/* - * If the remote does not have a number and we do then NAK it with the value - * which we have for it. (We never have a default value of zero.) - */ - if (zero_node (ho->his_node)) { - orc = CONFNAK; - copy_node (wo->his_node, p); - INCPTR (sizeof (wo->his_node), p); - break; - } -/* - * If you have given me the expected network node number then I'll accept - * it now. - */ - if (compare_node (wo->his_node, ho->his_node)) { - orc = CONFACK; - ho->neg_node = 1; - INCPTR (sizeof (wo->his_node), p); - break; - } -/* - * If his node number is the same as ours then ask him to try the next - * value. - */ - if (compare_node (ho->his_node, go->our_node)) { - inc_node (ho->his_node); - orc = CONFNAK; - copy_node (ho->his_node, p); - INCPTR (sizeof (wo->his_node), p); - break; - } -/* - * If we don't accept a new value then NAK it. - */ - if (! ao->accept_remote) { - copy_node (wo->his_node, p); - INCPTR (sizeof (wo->his_node), p); - orc = CONFNAK; - break; - } - orc = CONFACK; - ho->neg_node = 1; - INCPTR (sizeof (wo->his_node), p); - break; -/* - * Compression is not desired at this time. It is always rejected. - */ - case IPX_COMPRESSION_PROTOCOL: - orc = CONFREJ; - break; -/* - * The routing protocol is a bitmask of various types. Any combination - * of the values RIP_SAP and NLSP are permissible. 'IPX_NONE' for no - * routing protocol must be specified only once. - */ - case IPX_ROUTER_PROTOCOL: - if ( !ao->neg_router || cilen < CILEN_PROTOCOL ) { - orc = CONFREJ; - break; - } - - GETSHORT (cishort, p); - - if (wo->neg_router == 0) { - wo->neg_router = 1; - wo->router = BIT(IPX_NONE); - } - - if ((cishort == IPX_NONE && ho->router != 0) || - (ho->router & BIT(IPX_NONE))) { - orc = CONFREJ; - break; - } - - cishort = BIT(cishort); - if (ho->router & cishort) { - orc = CONFREJ; - break; - } - - ho->router |= cishort; - ho->neg_router = 1; - - /* Finally do not allow a router protocol which we do not - support. */ - - if ((cishort & (ao->router | BIT(IPX_NONE))) == 0) { - int protocol; - - if (cishort == BIT(NLSP) && - (ao->router & BIT(RIP_SAP)) && - !wo->tried_rip) { - protocol = RIP_SAP; - wo->tried_rip = 1; - } else - protocol = IPX_NONE; - - DECPTR (sizeof (u_int16_t), p); - PUTSHORT (protocol, p); - orc = CONFNAK; - } - break; -/* - * The router name is advisorary. Just accept it if it is not too large. - */ - case IPX_ROUTER_NAME: - if (cilen >= CILEN_NAME) { - int name_size = cilen - CILEN_NAME; - if (name_size > sizeof (ho->name)) - name_size = sizeof (ho->name) - 1; - memset (ho->name, 0, sizeof (ho->name)); - memcpy (ho->name, p, name_size); - ho->name [name_size] = '\0'; - ho->neg_name = 1; - orc = CONFACK; - break; - } - orc = CONFREJ; - break; -/* - * This is advisorary. - */ - case IPX_COMPLETE: - if (cilen != CILEN_COMPLETE) - orc = CONFREJ; - else { - ho->neg_complete = 1; - orc = CONFACK; - } - break; -/* - * All other entries are not known at this time. - */ - default: - orc = CONFREJ; - break; - } -endswitch: - if (orc == CONFACK && /* Good CI */ - rc != CONFACK) /* but prior CI wasnt? */ - continue; /* Don't send this one */ - - if (orc == CONFNAK) { /* Nak this CI? */ - if (reject_if_disagree) /* Getting fed up with sending NAKs? */ - orc = CONFREJ; /* Get tough if so */ - if (rc == CONFREJ) /* Rejecting prior CI? */ - continue; /* Don't send this one */ - if (rc == CONFACK) { /* Ack'd all prior CIs? */ - rc = CONFNAK; /* Not anymore... */ - ucp = inp; /* Backup */ - } - } - - if (orc == CONFREJ && /* Reject this CI */ - rc != CONFREJ) { /* but no prior ones? */ - rc = CONFREJ; - ucp = inp; /* Backup */ - } - - /* Need to move CI? */ - if (ucp != cip) - BCOPY(cip, ucp, cilen); /* Move it */ - - /* Update output pointer */ - INCPTR(cilen, ucp); - } - - /* - * If we aren't rejecting this packet, and we want to negotiate - * their address, and they didn't send their address, then we - * send a NAK with a IPX_NODE_NUMBER option appended. We assume the - * input buffer is long enough that we can append the extra - * option safely. - */ - - if (rc != CONFREJ && !ho->neg_node && - wo->req_nn && !reject_if_disagree) { - if (rc == CONFACK) { - rc = CONFNAK; - wo->req_nn = 0; /* don't ask again */ - ucp = inp; /* reset pointer */ - } - - if (zero_node (wo->his_node)) - inc_node (wo->his_node); - - PUTCHAR (IPX_NODE_NUMBER, ucp); - PUTCHAR (CILEN_NODEN, ucp); - copy_node (wo->his_node, ucp); - INCPTR (sizeof (wo->his_node), ucp); - } - - *len = ucp - inp; /* Compute output length */ - IPXCPDEBUG(("ipxcp: returning Configure-%s", CODENAME(rc))); - return (rc); /* Return final code */ -} - -/* - * ipxcp_up - IPXCP has come UP. - * - * Configure the IP network interface appropriately and bring it up. - */ - -static void -ipxcp_up(f) - fsm *f; -{ - int unit = f->unit; - - IPXCPDEBUG(("ipxcp: up")); - - /* The default router protocol is RIP/SAP. */ - if (ho->router == 0) - ho->router = BIT(RIP_SAP); - - if (go->router == 0) - go->router = BIT(RIP_SAP); - - /* Fetch the network number */ - if (!ho->neg_nn) - ho->his_network = wo->his_network; - - if (!ho->neg_node) - copy_node (wo->his_node, ho->his_node); - - if (!wo->neg_node && !go->neg_node) - copy_node (wo->our_node, go->our_node); - - if (zero_node (go->our_node)) { - static char errmsg[] = "Could not determine local IPX node address"; - if (debug) - error(errmsg); - ipxcp_close(f->unit, errmsg); - return; - } - - go->network = go->our_network; - if (ho->his_network != 0 && ho->his_network > go->network) - go->network = ho->his_network; - - if (go->network == 0) { - static char errmsg[] = "Can not determine network number"; - if (debug) - error(errmsg); - ipxcp_close (unit, errmsg); - return; - } - - /* bring the interface up */ - if (!sifup(unit)) { - if (debug) - warn("sifup failed (IPX)"); - ipxcp_close(unit, "Interface configuration failed"); - return; - } - ipxcp_is_up = 1; - - /* set the network number for IPX */ - if (!sipxfaddr(unit, go->network, go->our_node)) { - if (debug) - warn("sipxfaddr failed"); - ipxcp_close(unit, "Interface configuration failed"); - return; - } - - np_up(f->unit, PPP_IPX); - - /* - * Execute the ipx-up script, like this: - * /etc/ppp/ipx-up interface tty speed local-IPX remote-IPX - */ - - ipxcp_script (f, _PATH_IPXUP); -} - -/* - * ipxcp_down - IPXCP has gone DOWN. - * - * Take the IP network interface down, clear its addresses - * and delete routes through it. - */ - -static void -ipxcp_down(f) - fsm *f; -{ - IPXCPDEBUG(("ipxcp: down")); - - if (!ipxcp_is_up) - return; - ipxcp_is_up = 0; - np_down(f->unit, PPP_IPX); - cipxfaddr(f->unit); - sifnpmode(f->unit, PPP_IPX, NPMODE_DROP); - sifdown(f->unit); - ipxcp_script (f, _PATH_IPXDOWN); -} - - -/* - * ipxcp_finished - possibly shut down the lower layers. - */ -static void -ipxcp_finished(f) - fsm *f; -{ - np_finished(f->unit, PPP_IPX); -} - - -/* - * ipxcp_script - Execute a script with arguments - * interface-name tty-name speed local-IPX remote-IPX networks. - */ -static void -ipxcp_script(f, script) - fsm *f; - char *script; -{ - char strspeed[32], strlocal[32], strremote[32]; - char strnetwork[32], strpid[32]; - char *argv[14], strproto_lcl[32], strproto_rmt[32]; - - slprintf(strpid, sizeof(strpid), "%d", getpid()); - slprintf(strspeed, sizeof(strspeed),"%d", baud_rate); - - strproto_lcl[0] = '\0'; - if (go->neg_router && ((go->router & BIT(IPX_NONE)) == 0)) { - if (go->router & BIT(RIP_SAP)) - strlcpy (strproto_lcl, "RIP ", sizeof(strproto_lcl)); - if (go->router & BIT(NLSP)) - strlcat (strproto_lcl, "NLSP ", sizeof(strproto_lcl)); - } - - if (strproto_lcl[0] == '\0') - strlcpy (strproto_lcl, "NONE ", sizeof(strproto_lcl)); - - strproto_lcl[strlen (strproto_lcl)-1] = '\0'; - - strproto_rmt[0] = '\0'; - if (ho->neg_router && ((ho->router & BIT(IPX_NONE)) == 0)) { - if (ho->router & BIT(RIP_SAP)) - strlcpy (strproto_rmt, "RIP ", sizeof(strproto_rmt)); - if (ho->router & BIT(NLSP)) - strlcat (strproto_rmt, "NLSP ", sizeof(strproto_rmt)); - } - - if (strproto_rmt[0] == '\0') - strlcpy (strproto_rmt, "NONE ", sizeof(strproto_rmt)); - - strproto_rmt[strlen (strproto_rmt)-1] = '\0'; - - strlcpy (strnetwork, ipx_ntoa (go->network), sizeof(strnetwork)); - - slprintf (strlocal, sizeof(strlocal), "%0.6B", go->our_node); - - slprintf (strremote, sizeof(strremote), "%0.6B", ho->his_node); - - argv[0] = script; - argv[1] = ifname; - argv[2] = devnam; - argv[3] = strspeed; - argv[4] = strnetwork; - argv[5] = strlocal; - argv[6] = strremote; - argv[7] = strproto_lcl; - argv[8] = strproto_rmt; - argv[9] = go->name; - argv[10] = ho->name; - argv[11] = ipparam; - argv[12] = strpid; - argv[13] = NULL; - run_program(script, argv, 0, NULL, NULL); -} - -/* - * ipxcp_printpkt - print the contents of an IPXCP packet. - */ -static char *ipxcp_codenames[] = { - "ConfReq", "ConfAck", "ConfNak", "ConfRej", - "TermReq", "TermAck", "CodeRej" -}; - -static int -ipxcp_printpkt(p, plen, printer, arg) - u_char *p; - int plen; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int code, id, len, olen; - u_char *pstart, *optend; - u_short cishort; - u_int32_t cilong; - - if (plen < HEADERLEN) - return 0; - pstart = p; - GETCHAR(code, p); - GETCHAR(id, p); - GETSHORT(len, p); - if (len < HEADERLEN || len > plen) - return 0; - - if (code >= 1 && code <= sizeof(ipxcp_codenames) / sizeof(char *)) - printer(arg, " %s", ipxcp_codenames[code-1]); - else - printer(arg, " code=0x%x", code); - printer(arg, " id=0x%x", id); - len -= HEADERLEN; - switch (code) { - case CONFREQ: - case CONFACK: - case CONFNAK: - case CONFREJ: - /* print option list */ - while (len >= 2) { - GETCHAR(code, p); - GETCHAR(olen, p); - p -= 2; - if (olen < CILEN_VOID || olen > len) { - break; - } - printer(arg, " <"); - len -= olen; - optend = p + olen; - switch (code) { - case IPX_NETWORK_NUMBER: - if (olen == CILEN_NETN) { - p += 2; - GETLONG(cilong, p); - printer (arg, "network %s", ipx_ntoa (cilong)); - } - break; - case IPX_NODE_NUMBER: - if (olen == CILEN_NODEN) { - p += 2; - printer (arg, "node "); - while (p < optend) { - GETCHAR(code, p); - printer(arg, "%.2x", (int) (unsigned int) (unsigned char) code); - } - } - break; - case IPX_COMPRESSION_PROTOCOL: - if (olen == CILEN_COMPRESS) { - p += 2; - GETSHORT (cishort, p); - printer (arg, "compression %d", (int) cishort); - } - break; - case IPX_ROUTER_PROTOCOL: - if (olen == CILEN_PROTOCOL) { - p += 2; - GETSHORT (cishort, p); - printer (arg, "router proto %d", (int) cishort); - } - break; - case IPX_ROUTER_NAME: - if (olen >= CILEN_NAME) { - p += 2; - printer (arg, "router name \""); - while (p < optend) { - GETCHAR(code, p); - if (code >= 0x20 && code <= 0x7E) - printer (arg, "%c", (int) (unsigned int) (unsigned char) code); - else - printer (arg, " \\%.2x", (int) (unsigned int) (unsigned char) code); - } - printer (arg, "\""); - } - break; - case IPX_COMPLETE: - if (olen == CILEN_COMPLETE) { - p += 2; - printer (arg, "complete"); - } - break; - default: - break; - } - - while (p < optend) { - GETCHAR(code, p); - printer(arg, " %.2x", (int) (unsigned int) (unsigned char) code); - } - printer(arg, ">"); - } - break; - - case TERMACK: - case TERMREQ: - if (len > 0 && *p >= ' ' && *p < 0x7f) { - printer(arg, " "); - print_string(p, len, printer, arg); - p += len; - len = 0; - } - break; - } - - /* print the rest of the bytes in the packet */ - for (; len > 0; --len) { - GETCHAR(code, p); - printer(arg, " %.2x", (int) (unsigned int) (unsigned char) code); - } - - return p - pstart; -} -#endif /* ifdef IPX_CHANGE */ diff --git a/mdk-stage1/ppp/pppd/ipxcp.h b/mdk-stage1/ppp/pppd/ipxcp.h deleted file mode 100644 index 47f680d70..000000000 --- a/mdk-stage1/ppp/pppd/ipxcp.h +++ /dev/null @@ -1,71 +0,0 @@ -/* - * ipxcp.h - IPX Control Protocol definitions. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -/* - * Options. - */ -#define IPX_NETWORK_NUMBER 1 /* IPX Network Number */ -#define IPX_NODE_NUMBER 2 -#define IPX_COMPRESSION_PROTOCOL 3 -#define IPX_ROUTER_PROTOCOL 4 -#define IPX_ROUTER_NAME 5 -#define IPX_COMPLETE 6 - -/* Values for the router protocol */ -#define IPX_NONE 0 -#define RIP_SAP 2 -#define NLSP 4 - -typedef struct ipxcp_options { - bool neg_node; /* Negotiate IPX node number? */ - bool req_node; /* Ask peer to send IPX node number? */ - - bool neg_nn; /* Negotiate IPX network number? */ - bool req_nn; /* Ask peer to send IPX network number */ - - bool neg_name; /* Negotiate IPX router name */ - bool neg_complete; /* Negotiate completion */ - bool neg_router; /* Negotiate IPX router number */ - - bool accept_local; /* accept peer's value for ournode */ - bool accept_remote; /* accept peer's value for hisnode */ - bool accept_network; /* accept network number */ - - bool tried_nlsp; /* I have suggested NLSP already */ - bool tried_rip; /* I have suggested RIP/SAP already */ - - u_int32_t his_network; /* base network number */ - u_int32_t our_network; /* our value for network number */ - u_int32_t network; /* the final network number */ - - u_char his_node[6]; /* peer's node number */ - u_char our_node[6]; /* our node number */ - u_char name [48]; /* name of the router */ - int router; /* routing protocol */ -} ipxcp_options; - -extern fsm ipxcp_fsm[]; -extern ipxcp_options ipxcp_wantoptions[]; -extern ipxcp_options ipxcp_gotoptions[]; -extern ipxcp_options ipxcp_allowoptions[]; -extern ipxcp_options ipxcp_hisoptions[]; - -extern struct protent ipxcp_protent; diff --git a/mdk-stage1/ppp/pppd/lcp.c b/mdk-stage1/ppp/pppd/lcp.c deleted file mode 100644 index 41c58cad5..000000000 --- a/mdk-stage1/ppp/pppd/lcp.c +++ /dev/null @@ -1,2224 +0,0 @@ -/* - * lcp.c - PPP Link Control Protocol. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -/* - * TODO: - */ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> - -#include "pppd.h" -#include "fsm.h" -#include "lcp.h" -#include "chap.h" -#include "magic.h" - -static const char rcsid[] = RCSID; - -/* - * When the link comes up we want to be able to wait for a short while, - * or until seeing some input from the peer, before starting to send - * configure-requests. We do this by delaying the fsm_lowerup call. - */ -/* steal a bit in fsm flags word */ -#define DELAYED_UP 0x100 - -static void lcp_delayed_up __P((void *)); - -/* - * LCP-related command-line options. - */ -int lcp_echo_interval = 0; /* Interval between LCP echo-requests */ -int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */ -bool lax_recv = 0; /* accept control chars in asyncmap */ -bool noendpoint = 0; /* don't send/accept endpoint discriminator */ - -static int noopt __P((char **)); - -#ifdef HAVE_MULTILINK -static int setendpoint __P((char **)); -static void printendpoint __P((option_t *, void (*)(void *, char *, ...), - void *)); -#endif /* HAVE_MULTILINK */ - -static option_t lcp_option_list[] = { - /* LCP options */ - { "-all", o_special_noarg, (void *)noopt, - "Don't request/allow any LCP options" }, - - { "noaccomp", o_bool, &lcp_wantoptions[0].neg_accompression, - "Disable address/control compression", - OPT_A2CLR, &lcp_allowoptions[0].neg_accompression }, - { "-ac", o_bool, &lcp_wantoptions[0].neg_accompression, - "Disable address/control compression", - OPT_ALIAS | OPT_A2CLR, &lcp_allowoptions[0].neg_accompression }, - - { "asyncmap", o_uint32, &lcp_wantoptions[0].asyncmap, - "Set asyncmap (for received packets)", - OPT_OR, &lcp_wantoptions[0].neg_asyncmap }, - { "-as", o_uint32, &lcp_wantoptions[0].asyncmap, - "Set asyncmap (for received packets)", - OPT_ALIAS | OPT_OR, &lcp_wantoptions[0].neg_asyncmap }, - { "default-asyncmap", o_uint32, &lcp_wantoptions[0].asyncmap, - "Disable asyncmap negotiation", - OPT_OR | OPT_NOARG | OPT_VAL(~0U) | OPT_A2CLR, - &lcp_allowoptions[0].neg_asyncmap }, - { "-am", o_uint32, &lcp_wantoptions[0].asyncmap, - "Disable asyncmap negotiation", - OPT_ALIAS | OPT_OR | OPT_NOARG | OPT_VAL(~0U) | OPT_A2CLR, - &lcp_allowoptions[0].neg_asyncmap }, - - { "nomagic", o_bool, &lcp_wantoptions[0].neg_magicnumber, - "Disable magic number negotiation (looped-back line detection)", - OPT_A2CLR, &lcp_allowoptions[0].neg_magicnumber }, - { "-mn", o_bool, &lcp_wantoptions[0].neg_magicnumber, - "Disable magic number negotiation (looped-back line detection)", - OPT_ALIAS | OPT_A2CLR, &lcp_allowoptions[0].neg_magicnumber }, - - { "mru", o_int, &lcp_wantoptions[0].mru, - "Set MRU (maximum received packet size) for negotiation", - OPT_PRIO, &lcp_wantoptions[0].neg_mru }, - { "default-mru", o_bool, &lcp_wantoptions[0].neg_mru, - "Disable MRU negotiation (use default 1500)", - OPT_PRIOSUB | OPT_A2CLR, &lcp_allowoptions[0].neg_mru }, - { "-mru", o_bool, &lcp_wantoptions[0].neg_mru, - "Disable MRU negotiation (use default 1500)", - OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLR, &lcp_allowoptions[0].neg_mru }, - - { "mtu", o_int, &lcp_allowoptions[0].mru, - "Set our MTU", OPT_LIMITS, NULL, MAXMRU, MINMRU }, - - { "nopcomp", o_bool, &lcp_wantoptions[0].neg_pcompression, - "Disable protocol field compression", - OPT_A2CLR, &lcp_allowoptions[0].neg_pcompression }, - { "-pc", o_bool, &lcp_wantoptions[0].neg_pcompression, - "Disable protocol field compression", - OPT_ALIAS | OPT_A2CLR, &lcp_allowoptions[0].neg_pcompression }, - - { "passive", o_bool, &lcp_wantoptions[0].passive, - "Set passive mode", 1 }, - { "-p", o_bool, &lcp_wantoptions[0].passive, - "Set passive mode", OPT_ALIAS | 1 }, - - { "silent", o_bool, &lcp_wantoptions[0].silent, - "Set silent mode", 1 }, - - { "lcp-echo-failure", o_int, &lcp_echo_fails, - "Set number of consecutive echo failures to indicate link failure", - OPT_PRIO }, - { "lcp-echo-interval", o_int, &lcp_echo_interval, - "Set time in seconds between LCP echo requests", OPT_PRIO }, - { "lcp-restart", o_int, &lcp_fsm[0].timeouttime, - "Set time in seconds between LCP retransmissions", OPT_PRIO }, - { "lcp-max-terminate", o_int, &lcp_fsm[0].maxtermtransmits, - "Set maximum number of LCP terminate-request transmissions", OPT_PRIO }, - { "lcp-max-configure", o_int, &lcp_fsm[0].maxconfreqtransmits, - "Set maximum number of LCP configure-request transmissions", OPT_PRIO }, - { "lcp-max-failure", o_int, &lcp_fsm[0].maxnakloops, - "Set limit on number of LCP configure-naks", OPT_PRIO }, - - { "receive-all", o_bool, &lax_recv, - "Accept all received control characters", 1 }, - -#ifdef HAVE_MULTILINK - { "mrru", o_int, &lcp_wantoptions[0].mrru, - "Maximum received packet size for multilink bundle", - OPT_PRIO, &lcp_wantoptions[0].neg_mrru }, - - { "mpshortseq", o_bool, &lcp_wantoptions[0].neg_ssnhf, - "Use short sequence numbers in multilink headers", - OPT_PRIO | 1, &lcp_allowoptions[0].neg_ssnhf }, - { "nompshortseq", o_bool, &lcp_wantoptions[0].neg_ssnhf, - "Don't use short sequence numbers in multilink headers", - OPT_PRIOSUB | OPT_A2CLR, &lcp_allowoptions[0].neg_ssnhf }, - - { "endpoint", o_special, (void *) setendpoint, - "Endpoint discriminator for multilink", - OPT_PRIO | OPT_A2PRINTER, (void *) printendpoint }, -#endif /* HAVE_MULTILINK */ - - { "noendpoint", o_bool, &noendpoint, - "Don't send or accept multilink endpoint discriminator", 1 }, - - {NULL} -}; - -/* global vars */ -fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/ -lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */ -lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */ -lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */ -lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */ - -static int lcp_echos_pending = 0; /* Number of outstanding echo msgs */ -static int lcp_echo_number = 0; /* ID number of next echo frame */ -static int lcp_echo_timer_running = 0; /* set if a timer is running */ - -static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */ - -/* - * Callbacks for fsm code. (CI = Configuration Information) - */ -static void lcp_resetci __P((fsm *)); /* Reset our CI */ -static int lcp_cilen __P((fsm *)); /* Return length of our CI */ -static void lcp_addci __P((fsm *, u_char *, int *)); /* Add our CI to pkt */ -static int lcp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */ -static int lcp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */ -static int lcp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */ -static int lcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv peer CI */ -static void lcp_up __P((fsm *)); /* We're UP */ -static void lcp_down __P((fsm *)); /* We're DOWN */ -static void lcp_starting __P((fsm *)); /* We need lower layer up */ -static void lcp_finished __P((fsm *)); /* We need lower layer down */ -static int lcp_extcode __P((fsm *, int, int, u_char *, int)); -static void lcp_rprotrej __P((fsm *, u_char *, int)); - -/* - * routines to send LCP echos to peer - */ - -static void lcp_echo_lowerup __P((int)); -static void lcp_echo_lowerdown __P((int)); -static void LcpEchoTimeout __P((void *)); -static void lcp_received_echo_reply __P((fsm *, int, u_char *, int)); -static void LcpSendEchoRequest __P((fsm *)); -static void LcpLinkFailure __P((fsm *)); -static void LcpEchoCheck __P((fsm *)); - -static fsm_callbacks lcp_callbacks = { /* LCP callback routines */ - lcp_resetci, /* Reset our Configuration Information */ - lcp_cilen, /* Length of our Configuration Information */ - lcp_addci, /* Add our Configuration Information */ - lcp_ackci, /* ACK our Configuration Information */ - lcp_nakci, /* NAK our Configuration Information */ - lcp_rejci, /* Reject our Configuration Information */ - lcp_reqci, /* Request peer's Configuration Information */ - lcp_up, /* Called when fsm reaches OPENED state */ - lcp_down, /* Called when fsm leaves OPENED state */ - lcp_starting, /* Called when we want the lower layer up */ - lcp_finished, /* Called when we want the lower layer down */ - NULL, /* Called when Protocol-Reject received */ - NULL, /* Retransmission is necessary */ - lcp_extcode, /* Called to handle LCP-specific codes */ - "LCP" /* String name of protocol */ -}; - -/* - * Protocol entry points. - * Some of these are called directly. - */ - -static void lcp_init __P((int)); -static void lcp_input __P((int, u_char *, int)); -static void lcp_protrej __P((int)); -static int lcp_printpkt __P((u_char *, int, - void (*) __P((void *, char *, ...)), void *)); - -struct protent lcp_protent = { - PPP_LCP, - lcp_init, - lcp_input, - lcp_protrej, - lcp_lowerup, - lcp_lowerdown, - lcp_open, - lcp_close, - lcp_printpkt, - NULL, - 1, - "LCP", - NULL, - lcp_option_list, - NULL, - NULL, - NULL -}; - -int lcp_loopbackfail = DEFLOOPBACKFAIL; - -/* - * Length of each type of configuration option (in octets) - */ -#define CILEN_VOID 2 -#define CILEN_CHAR 3 -#define CILEN_SHORT 4 /* CILEN_VOID + 2 */ -#define CILEN_CHAP 5 /* CILEN_VOID + 2 + 1 */ -#define CILEN_LONG 6 /* CILEN_VOID + 4 */ -#define CILEN_LQR 8 /* CILEN_VOID + 2 + 4 */ -#define CILEN_CBCP 3 - -#define CODENAME(x) ((x) == CONFACK ? "ACK" : \ - (x) == CONFNAK ? "NAK" : "REJ") - -/* - * noopt - Disable all options (why?). - */ -static int -noopt(argv) - char **argv; -{ - BZERO((char *) &lcp_wantoptions[0], sizeof (struct lcp_options)); - BZERO((char *) &lcp_allowoptions[0], sizeof (struct lcp_options)); - - return (1); -} - -#ifdef HAVE_MULTILINK -static int -setendpoint(argv) - char **argv; -{ - if (str_to_epdisc(&lcp_wantoptions[0].endpoint, *argv)) { - lcp_wantoptions[0].neg_endpoint = 1; - return 1; - } - option_error("Can't parse '%s' as an endpoint discriminator", *argv); - return 0; -} - -static void -printendpoint(opt, printer, arg) - option_t *opt; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - printer(arg, "%s", epdisc_to_str(&lcp_wantoptions[0].endpoint)); -} -#endif /* HAVE_MULTILINK */ - -/* - * lcp_init - Initialize LCP. - */ -static void -lcp_init(unit) - int unit; -{ - fsm *f = &lcp_fsm[unit]; - lcp_options *wo = &lcp_wantoptions[unit]; - lcp_options *ao = &lcp_allowoptions[unit]; - - f->unit = unit; - f->protocol = PPP_LCP; - f->callbacks = &lcp_callbacks; - - fsm_init(f); - - BZERO(wo, sizeof(*wo)); - wo->neg_mru = 1; - wo->mru = DEFMRU; - wo->neg_asyncmap = 1; - wo->chap_mdtype = CHAP_DIGEST_MD5; - wo->neg_magicnumber = 1; - wo->neg_pcompression = 1; - wo->neg_accompression = 1; - - BZERO(ao, sizeof(*ao)); - ao->neg_mru = 1; - ao->mru = MAXMRU; - ao->neg_asyncmap = 1; - ao->neg_chap = 1; - ao->chap_mdtype = CHAP_DIGEST_MD5; - ao->neg_upap = 1; - ao->neg_magicnumber = 1; - ao->neg_pcompression = 1; - ao->neg_accompression = 1; -#ifdef CBCP_SUPPORT - ao->neg_cbcp = 1; -#endif - ao->neg_endpoint = 1; -} - - -/* - * lcp_open - LCP is allowed to come up. - */ -void -lcp_open(unit) - int unit; -{ - fsm *f = &lcp_fsm[unit]; - lcp_options *wo = &lcp_wantoptions[unit]; - - f->flags &= ~(OPT_PASSIVE | OPT_SILENT); - if (wo->passive) - f->flags |= OPT_PASSIVE; - if (wo->silent) - f->flags |= OPT_SILENT; - fsm_open(f); -} - - -/* - * lcp_close - Take LCP down. - */ -void -lcp_close(unit, reason) - int unit; - char *reason; -{ - fsm *f = &lcp_fsm[unit]; - - if (phase != PHASE_DEAD) - new_phase(PHASE_TERMINATE); - if (f->state == STOPPED && f->flags & (OPT_PASSIVE|OPT_SILENT)) { - /* - * This action is not strictly according to the FSM in RFC1548, - * but it does mean that the program terminates if you do a - * lcp_close() in passive/silent mode when a connection hasn't - * been established. - */ - f->state = CLOSED; - lcp_finished(f); - - } else - fsm_close(&lcp_fsm[unit], reason); -} - - -/* - * lcp_lowerup - The lower layer is up. - */ -void -lcp_lowerup(unit) - int unit; -{ - lcp_options *wo = &lcp_wantoptions[unit]; - fsm *f = &lcp_fsm[unit]; - - /* - * Don't use A/C or protocol compression on transmission, - * but accept A/C and protocol compressed packets - * if we are going to ask for A/C and protocol compression. - */ - ppp_send_config(unit, PPP_MRU, 0xffffffff, 0, 0); - ppp_recv_config(unit, PPP_MRU, (lax_recv? 0: 0xffffffff), - wo->neg_pcompression, wo->neg_accompression); - peer_mru[unit] = PPP_MRU; - - if (listen_time != 0) { - f->flags |= DELAYED_UP; - timeout(lcp_delayed_up, f, 0, listen_time * 1000); - } else - fsm_lowerup(f); -} - - -/* - * lcp_lowerdown - The lower layer is down. - */ -void -lcp_lowerdown(unit) - int unit; -{ - fsm *f = &lcp_fsm[unit]; - - if (f->flags & DELAYED_UP) - f->flags &= ~DELAYED_UP; - else - fsm_lowerdown(&lcp_fsm[unit]); -} - - -/* - * lcp_delayed_up - Bring the lower layer up now. - */ -static void -lcp_delayed_up(arg) - void *arg; -{ - fsm *f = arg; - - if (f->flags & DELAYED_UP) { - f->flags &= ~DELAYED_UP; - fsm_lowerup(f); - } -} - - -/* - * lcp_input - Input LCP packet. - */ -static void -lcp_input(unit, p, len) - int unit; - u_char *p; - int len; -{ - fsm *f = &lcp_fsm[unit]; - - if (f->flags & DELAYED_UP) { - f->flags &= ~DELAYED_UP; - fsm_lowerup(f); - } - fsm_input(f, p, len); -} - - -/* - * lcp_extcode - Handle a LCP-specific code. - */ -static int -lcp_extcode(f, code, id, inp, len) - fsm *f; - int code, id; - u_char *inp; - int len; -{ - u_char *magp; - - switch( code ){ - case PROTREJ: - lcp_rprotrej(f, inp, len); - break; - - case ECHOREQ: - if (f->state != OPENED) - break; - magp = inp; - PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp); - fsm_sdata(f, ECHOREP, id, inp, len); - break; - - case ECHOREP: - lcp_received_echo_reply(f, id, inp, len); - break; - - case DISCREQ: - break; - - default: - return 0; - } - return 1; -} - - -/* - * lcp_rprotrej - Receive an Protocol-Reject. - * - * Figure out which protocol is rejected and inform it. - */ -static void -lcp_rprotrej(f, inp, len) - fsm *f; - u_char *inp; - int len; -{ - int i; - struct protent *protp; - u_short prot; - - if (len < 2) { - LCPDEBUG(("lcp_rprotrej: Rcvd short Protocol-Reject packet!")); - return; - } - - GETSHORT(prot, inp); - - /* - * Protocol-Reject packets received in any state other than the LCP - * OPENED state SHOULD be silently discarded. - */ - if( f->state != OPENED ){ - LCPDEBUG(("Protocol-Reject discarded: LCP in state %d", f->state)); - return; - } - - /* - * Upcall the proper Protocol-Reject routine. - */ - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (protp->protocol == prot && protp->enabled_flag) { - (*protp->protrej)(f->unit); - return; - } - - warn("Protocol-Reject for unsupported protocol 0x%x", prot); -} - - -/* - * lcp_protrej - A Protocol-Reject was received. - */ -/*ARGSUSED*/ -static void -lcp_protrej(unit) - int unit; -{ - /* - * Can't reject LCP! - */ - error("Received Protocol-Reject for LCP!"); - fsm_protreject(&lcp_fsm[unit]); -} - - -/* - * lcp_sprotrej - Send a Protocol-Reject for some protocol. - */ -void -lcp_sprotrej(unit, p, len) - int unit; - u_char *p; - int len; -{ - /* - * Send back the protocol and the information field of the - * rejected packet. We only get here if LCP is in the OPENED state. - */ - p += 2; - len -= 2; - - fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, - p, len); -} - - -/* - * lcp_resetci - Reset our CI. - */ -static void -lcp_resetci(f) - fsm *f; -{ - lcp_options *wo = &lcp_wantoptions[f->unit]; - lcp_options *go = &lcp_gotoptions[f->unit]; - lcp_options *ao = &lcp_allowoptions[f->unit]; - - wo->magicnumber = magic(); - wo->numloops = 0; - *go = *wo; - if (!multilink) { - go->neg_mrru = 0; - go->neg_ssnhf = 0; - go->neg_endpoint = 0; - } - if (noendpoint) - ao->neg_endpoint = 0; - peer_mru[f->unit] = PPP_MRU; - auth_reset(f->unit); -} - - -/* - * lcp_cilen - Return length of our CI. - */ -static int -lcp_cilen(f) - fsm *f; -{ - lcp_options *go = &lcp_gotoptions[f->unit]; - -#define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0) -#define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0) -#define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0) -#define LENCILONG(neg) ((neg) ? CILEN_LONG : 0) -#define LENCILQR(neg) ((neg) ? CILEN_LQR: 0) -#define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0) - /* - * NB: we only ask for one of CHAP and UPAP, even if we will - * accept either. - */ - return (LENCISHORT(go->neg_mru && go->mru != DEFMRU) + - LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFF) + - LENCICHAP(go->neg_chap) + - LENCISHORT(!go->neg_chap && go->neg_upap) + - LENCILQR(go->neg_lqr) + - LENCICBCP(go->neg_cbcp) + - LENCILONG(go->neg_magicnumber) + - LENCIVOID(go->neg_pcompression) + - LENCIVOID(go->neg_accompression) + - LENCISHORT(go->neg_mrru) + - LENCIVOID(go->neg_ssnhf) + - (go->neg_endpoint? CILEN_CHAR + go->endpoint.length: 0)); -} - - -/* - * lcp_addci - Add our desired CIs to a packet. - */ -static void -lcp_addci(f, ucp, lenp) - fsm *f; - u_char *ucp; - int *lenp; -{ - lcp_options *go = &lcp_gotoptions[f->unit]; - u_char *start_ucp = ucp; - -#define ADDCIVOID(opt, neg) \ - if (neg) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(CILEN_VOID, ucp); \ - } -#define ADDCISHORT(opt, neg, val) \ - if (neg) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(CILEN_SHORT, ucp); \ - PUTSHORT(val, ucp); \ - } -#define ADDCICHAP(opt, neg, val, digest) \ - if (neg) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(CILEN_CHAP, ucp); \ - PUTSHORT(val, ucp); \ - PUTCHAR(digest, ucp); \ - } -#define ADDCILONG(opt, neg, val) \ - if (neg) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(CILEN_LONG, ucp); \ - PUTLONG(val, ucp); \ - } -#define ADDCILQR(opt, neg, val) \ - if (neg) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(CILEN_LQR, ucp); \ - PUTSHORT(PPP_LQR, ucp); \ - PUTLONG(val, ucp); \ - } -#define ADDCICHAR(opt, neg, val) \ - if (neg) { \ - PUTCHAR(opt, ucp); \ - PUTCHAR(CILEN_CHAR, ucp); \ - PUTCHAR(val, ucp); \ - } -#define ADDCIENDP(opt, neg, class, val, len) \ - if (neg) { \ - int i; \ - PUTCHAR(opt, ucp); \ - PUTCHAR(CILEN_CHAR + len, ucp); \ - PUTCHAR(class, ucp); \ - for (i = 0; i < len; ++i) \ - PUTCHAR(val[i], ucp); \ - } - - ADDCISHORT(CI_MRU, go->neg_mru && go->mru != DEFMRU, go->mru); - ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFF, - go->asyncmap); - ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype); - ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP); - ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period); - ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT); - ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber); - ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression); - ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression); - ADDCISHORT(CI_MRRU, go->neg_mrru, go->mrru); - ADDCIVOID(CI_SSNHF, go->neg_ssnhf); - ADDCIENDP(CI_EPDISC, go->neg_endpoint, go->endpoint.class, - go->endpoint.value, go->endpoint.length); - - if (ucp - start_ucp != *lenp) { - /* this should never happen, because peer_mtu should be 1500 */ - error("Bug in lcp_addci: wrong length"); - } -} - - -/* - * lcp_ackci - Ack our CIs. - * This should not modify any state if the Ack is bad. - * - * Returns: - * 0 - Ack was bad. - * 1 - Ack was good. - */ -static int -lcp_ackci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - lcp_options *go = &lcp_gotoptions[f->unit]; - u_char cilen, citype, cichar; - u_short cishort; - u_int32_t cilong; - - /* - * CIs must be in exactly the same order that we sent. - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ -#define ACKCIVOID(opt, neg) \ - if (neg) { \ - if ((len -= CILEN_VOID) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_VOID || \ - citype != opt) \ - goto bad; \ - } -#define ACKCISHORT(opt, neg, val) \ - if (neg) { \ - if ((len -= CILEN_SHORT) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_SHORT || \ - citype != opt) \ - goto bad; \ - GETSHORT(cishort, p); \ - if (cishort != val) \ - goto bad; \ - } -#define ACKCICHAR(opt, neg, val) \ - if (neg) { \ - if ((len -= CILEN_CHAR) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_CHAR || \ - citype != opt) \ - goto bad; \ - GETCHAR(cichar, p); \ - if (cichar != val) \ - goto bad; \ - } -#define ACKCICHAP(opt, neg, val, digest) \ - if (neg) { \ - if ((len -= CILEN_CHAP) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_CHAP || \ - citype != opt) \ - goto bad; \ - GETSHORT(cishort, p); \ - if (cishort != val) \ - goto bad; \ - GETCHAR(cichar, p); \ - if (cichar != digest) \ - goto bad; \ - } -#define ACKCILONG(opt, neg, val) \ - if (neg) { \ - if ((len -= CILEN_LONG) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_LONG || \ - citype != opt) \ - goto bad; \ - GETLONG(cilong, p); \ - if (cilong != val) \ - goto bad; \ - } -#define ACKCILQR(opt, neg, val) \ - if (neg) { \ - if ((len -= CILEN_LQR) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_LQR || \ - citype != opt) \ - goto bad; \ - GETSHORT(cishort, p); \ - if (cishort != PPP_LQR) \ - goto bad; \ - GETLONG(cilong, p); \ - if (cilong != val) \ - goto bad; \ - } -#define ACKCIENDP(opt, neg, class, val, vlen) \ - if (neg) { \ - int i; \ - if ((len -= CILEN_CHAR + vlen) < 0) \ - goto bad; \ - GETCHAR(citype, p); \ - GETCHAR(cilen, p); \ - if (cilen != CILEN_CHAR + vlen || \ - citype != opt) \ - goto bad; \ - GETCHAR(cichar, p); \ - if (cichar != class) \ - goto bad; \ - for (i = 0; i < vlen; ++i) { \ - GETCHAR(cichar, p); \ - if (cichar != val[i]) \ - goto bad; \ - } \ - } - - ACKCISHORT(CI_MRU, go->neg_mru && go->mru != DEFMRU, go->mru); - ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFF, - go->asyncmap); - ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype); - ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP); - ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period); - ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT); - ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber); - ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression); - ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression); - ACKCISHORT(CI_MRRU, go->neg_mrru, go->mrru); - ACKCIVOID(CI_SSNHF, go->neg_ssnhf); - ACKCIENDP(CI_EPDISC, go->neg_endpoint, go->endpoint.class, - go->endpoint.value, go->endpoint.length); - - /* - * If there are any remaining CIs, then this packet is bad. - */ - if (len != 0) - goto bad; - return (1); -bad: - LCPDEBUG(("lcp_acki: received bad Ack!")); - return (0); -} - - -/* - * lcp_nakci - Peer has sent a NAK for some of our CIs. - * This should not modify any state if the Nak is bad - * or if LCP is in the OPENED state. - * - * Returns: - * 0 - Nak was bad. - * 1 - Nak was good. - */ -static int -lcp_nakci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - lcp_options *go = &lcp_gotoptions[f->unit]; - lcp_options *wo = &lcp_wantoptions[f->unit]; - u_char citype, cichar, *next; - u_short cishort; - u_int32_t cilong; - lcp_options no; /* options we've seen Naks for */ - lcp_options try; /* options to request next time */ - int looped_back = 0; - int cilen; - - BZERO(&no, sizeof(no)); - try = *go; - - /* - * Any Nak'd CIs must be in exactly the same order that we sent. - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ -#define NAKCIVOID(opt, neg) \ - if (go->neg && \ - len >= CILEN_VOID && \ - p[1] == CILEN_VOID && \ - p[0] == opt) { \ - len -= CILEN_VOID; \ - INCPTR(CILEN_VOID, p); \ - no.neg = 1; \ - try.neg = 0; \ - } -#define NAKCICHAP(opt, neg, code) \ - if (go->neg && \ - len >= CILEN_CHAP && \ - p[1] == CILEN_CHAP && \ - p[0] == opt) { \ - len -= CILEN_CHAP; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - GETCHAR(cichar, p); \ - no.neg = 1; \ - code \ - } -#define NAKCICHAR(opt, neg, code) \ - if (go->neg && \ - len >= CILEN_CHAR && \ - p[1] == CILEN_CHAR && \ - p[0] == opt) { \ - len -= CILEN_CHAR; \ - INCPTR(2, p); \ - GETCHAR(cichar, p); \ - no.neg = 1; \ - code \ - } -#define NAKCISHORT(opt, neg, code) \ - if (go->neg && \ - len >= CILEN_SHORT && \ - p[1] == CILEN_SHORT && \ - p[0] == opt) { \ - len -= CILEN_SHORT; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - no.neg = 1; \ - code \ - } -#define NAKCILONG(opt, neg, code) \ - if (go->neg && \ - len >= CILEN_LONG && \ - p[1] == CILEN_LONG && \ - p[0] == opt) { \ - len -= CILEN_LONG; \ - INCPTR(2, p); \ - GETLONG(cilong, p); \ - no.neg = 1; \ - code \ - } -#define NAKCILQR(opt, neg, code) \ - if (go->neg && \ - len >= CILEN_LQR && \ - p[1] == CILEN_LQR && \ - p[0] == opt) { \ - len -= CILEN_LQR; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - GETLONG(cilong, p); \ - no.neg = 1; \ - code \ - } -#define NAKCIENDP(opt, neg) \ - if (go->neg && \ - len >= CILEN_CHAR && \ - p[0] == opt && \ - p[1] >= CILEN_CHAR && \ - p[1] <= len) { \ - len -= p[1]; \ - INCPTR(p[1], p); \ - no.neg = 1; \ - try.neg = 0; \ - } - - /* - * We don't care if they want to send us smaller packets than - * we want. Therefore, accept any MRU less than what we asked for, - * but then ignore the new value when setting the MRU in the kernel. - * If they send us a bigger MRU than what we asked, accept it, up to - * the limit of the default MRU we'd get if we didn't negotiate. - */ - if (go->neg_mru && go->mru != DEFMRU) { - NAKCISHORT(CI_MRU, neg_mru, - if (cishort <= wo->mru || cishort <= DEFMRU) - try.mru = cishort; - ); - } - - /* - * Add any characters they want to our (receive-side) asyncmap. - */ - if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFF) { - NAKCILONG(CI_ASYNCMAP, neg_asyncmap, - try.asyncmap = go->asyncmap | cilong; - ); - } - - /* - * If they've nak'd our authentication-protocol, check whether - * they are proposing a different protocol, or a different - * hash algorithm for CHAP. - */ - if ((go->neg_chap || go->neg_upap) - && len >= CILEN_SHORT - && p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) { - cilen = p[1]; - len -= cilen; - no.neg_chap = go->neg_chap; - no.neg_upap = go->neg_upap; - INCPTR(2, p); - GETSHORT(cishort, p); - if (cishort == PPP_PAP && cilen == CILEN_SHORT) { - /* - * If we were asking for CHAP, they obviously don't want to do it. - * If we weren't asking for CHAP, then we were asking for PAP, - * in which case this Nak is bad. - */ - if (!go->neg_chap) - goto bad; - try.neg_chap = 0; - - } else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) { - GETCHAR(cichar, p); - if (go->neg_chap) { - /* - * We were asking for CHAP/MD5; they must want a different - * algorithm. If they can't do MD5, we can ask for M$-CHAP - * if we support it, otherwise we'll have to stop - * asking for CHAP. - */ - if (cichar != go->chap_mdtype) { -#ifdef CHAPMS - if (cichar == CHAP_MICROSOFT) - go->chap_mdtype = CHAP_MICROSOFT; - else -#endif /* CHAPMS */ - try.neg_chap = 0; - } - } else { - /* - * Stop asking for PAP if we were asking for it. - */ - try.neg_upap = 0; - } - - } else { - /* - * We don't recognize what they're suggesting. - * Stop asking for what we were asking for. - */ - if (go->neg_chap) - try.neg_chap = 0; - else - try.neg_upap = 0; - p += cilen - CILEN_SHORT; - } - } - - /* - * If they can't cope with our link quality protocol, we'll have - * to stop asking for LQR. We haven't got any other protocol. - * If they Nak the reporting period, take their value XXX ? - */ - NAKCILQR(CI_QUALITY, neg_lqr, - if (cishort != PPP_LQR) - try.neg_lqr = 0; - else - try.lqr_period = cilong; - ); - - /* - * Only implementing CBCP...not the rest of the callback options - */ - NAKCICHAR(CI_CALLBACK, neg_cbcp, - try.neg_cbcp = 0; - ); - - /* - * Check for a looped-back line. - */ - NAKCILONG(CI_MAGICNUMBER, neg_magicnumber, - try.magicnumber = magic(); - looped_back = 1; - ); - - /* - * Peer shouldn't send Nak for protocol compression or - * address/control compression requests; they should send - * a Reject instead. If they send a Nak, treat it as a Reject. - */ - NAKCIVOID(CI_PCOMPRESSION, neg_pcompression); - NAKCIVOID(CI_ACCOMPRESSION, neg_accompression); - - /* - * Nak for MRRU option - accept their value if it is smaller - * than the one we want. - */ - if (go->neg_mrru) { - NAKCISHORT(CI_MRRU, neg_mrru, - if (cishort <= wo->mrru) - try.mrru = cishort; - ); - } - - /* - * Nak for short sequence numbers shouldn't be sent, treat it - * like a reject. - */ - NAKCIVOID(CI_SSNHF, neg_ssnhf); - - /* - * Nak of the endpoint discriminator option is not permitted, - * treat it like a reject. - */ - NAKCIENDP(CI_EPDISC, neg_endpoint); - - /* - * There may be remaining CIs, if the peer is requesting negotiation - * on an option that we didn't include in our request packet. - * If we see an option that we requested, or one we've already seen - * in this packet, then this packet is bad. - * If we wanted to respond by starting to negotiate on the requested - * option(s), we could, but we don't, because except for the - * authentication type and quality protocol, if we are not negotiating - * an option, it is because we were told not to. - * For the authentication type, the Nak from the peer means - * `let me authenticate myself with you' which is a bit pointless. - * For the quality protocol, the Nak means `ask me to send you quality - * reports', but if we didn't ask for them, we don't want them. - * An option we don't recognize represents the peer asking to - * negotiate some option we don't support, so ignore it. - */ - while (len > CILEN_VOID) { - GETCHAR(citype, p); - GETCHAR(cilen, p); - if (cilen < CILEN_VOID || (len -= cilen) < 0) - goto bad; - next = p + cilen - 2; - - switch (citype) { - case CI_MRU: - if ((go->neg_mru && go->mru != DEFMRU) - || no.neg_mru || cilen != CILEN_SHORT) - goto bad; - GETSHORT(cishort, p); - if (cishort < DEFMRU) { - try.neg_mru = 1; - try.mru = cishort; - } - break; - case CI_ASYNCMAP: - if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFF) - || no.neg_asyncmap || cilen != CILEN_LONG) - goto bad; - break; - case CI_AUTHTYPE: - if (go->neg_chap || no.neg_chap || go->neg_upap || no.neg_upap) - goto bad; - break; - case CI_MAGICNUMBER: - if (go->neg_magicnumber || no.neg_magicnumber || - cilen != CILEN_LONG) - goto bad; - break; - case CI_PCOMPRESSION: - if (go->neg_pcompression || no.neg_pcompression - || cilen != CILEN_VOID) - goto bad; - break; - case CI_ACCOMPRESSION: - if (go->neg_accompression || no.neg_accompression - || cilen != CILEN_VOID) - goto bad; - break; - case CI_QUALITY: - if (go->neg_lqr || no.neg_lqr || cilen != CILEN_LQR) - goto bad; - break; - case CI_MRRU: - if (go->neg_mrru || no.neg_mrru || cilen != CILEN_SHORT) - goto bad; - break; - case CI_SSNHF: - if (go->neg_ssnhf || no.neg_ssnhf || cilen != CILEN_VOID) - goto bad; - try.neg_ssnhf = 1; - break; - case CI_EPDISC: - if (go->neg_endpoint || no.neg_endpoint || cilen < CILEN_CHAR) - goto bad; - break; - } - p = next; - } - - /* - * OK, the Nak is good. Now we can update state. - * If there are any options left we ignore them. - */ - if (f->state != OPENED) { - if (looped_back) { - if (++try.numloops >= lcp_loopbackfail) { - notice("Serial line is looped back."); - lcp_close(f->unit, "Loopback detected"); - status = EXIT_LOOPBACK; - } - } else - try.numloops = 0; - *go = try; - } - - return 1; - -bad: - LCPDEBUG(("lcp_nakci: received bad Nak!")); - return 0; -} - - -/* - * lcp_rejci - Peer has Rejected some of our CIs. - * This should not modify any state if the Reject is bad - * or if LCP is in the OPENED state. - * - * Returns: - * 0 - Reject was bad. - * 1 - Reject was good. - */ -static int -lcp_rejci(f, p, len) - fsm *f; - u_char *p; - int len; -{ - lcp_options *go = &lcp_gotoptions[f->unit]; - u_char cichar; - u_short cishort; - u_int32_t cilong; - lcp_options try; /* options to request next time */ - - try = *go; - - /* - * Any Rejected CIs must be in exactly the same order that we sent. - * Check packet length and CI length at each step. - * If we find any deviations, then this packet is bad. - */ -#define REJCIVOID(opt, neg) \ - if (go->neg && \ - len >= CILEN_VOID && \ - p[1] == CILEN_VOID && \ - p[0] == opt) { \ - len -= CILEN_VOID; \ - INCPTR(CILEN_VOID, p); \ - try.neg = 0; \ - } -#define REJCISHORT(opt, neg, val) \ - if (go->neg && \ - len >= CILEN_SHORT && \ - p[1] == CILEN_SHORT && \ - p[0] == opt) { \ - len -= CILEN_SHORT; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - /* Check rejected value. */ \ - if (cishort != val) \ - goto bad; \ - try.neg = 0; \ - } -#define REJCICHAP(opt, neg, val, digest) \ - if (go->neg && \ - len >= CILEN_CHAP && \ - p[1] == CILEN_CHAP && \ - p[0] == opt) { \ - len -= CILEN_CHAP; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - GETCHAR(cichar, p); \ - /* Check rejected value. */ \ - if (cishort != val || cichar != digest) \ - goto bad; \ - try.neg = 0; \ - try.neg_upap = 0; \ - } -#define REJCILONG(opt, neg, val) \ - if (go->neg && \ - len >= CILEN_LONG && \ - p[1] == CILEN_LONG && \ - p[0] == opt) { \ - len -= CILEN_LONG; \ - INCPTR(2, p); \ - GETLONG(cilong, p); \ - /* Check rejected value. */ \ - if (cilong != val) \ - goto bad; \ - try.neg = 0; \ - } -#define REJCILQR(opt, neg, val) \ - if (go->neg && \ - len >= CILEN_LQR && \ - p[1] == CILEN_LQR && \ - p[0] == opt) { \ - len -= CILEN_LQR; \ - INCPTR(2, p); \ - GETSHORT(cishort, p); \ - GETLONG(cilong, p); \ - /* Check rejected value. */ \ - if (cishort != PPP_LQR || cilong != val) \ - goto bad; \ - try.neg = 0; \ - } -#define REJCICBCP(opt, neg, val) \ - if (go->neg && \ - len >= CILEN_CBCP && \ - p[1] == CILEN_CBCP && \ - p[0] == opt) { \ - len -= CILEN_CBCP; \ - INCPTR(2, p); \ - GETCHAR(cichar, p); \ - /* Check rejected value. */ \ - if (cichar != val) \ - goto bad; \ - try.neg = 0; \ - } -#define REJCIENDP(opt, neg, class, val, vlen) \ - if (go->neg && \ - len >= CILEN_CHAR + vlen && \ - p[0] == opt && \ - p[1] == CILEN_CHAR + vlen) { \ - int i; \ - len -= CILEN_CHAR + vlen; \ - INCPTR(2, p); \ - GETCHAR(cichar, p); \ - if (cichar != class) \ - goto bad; \ - for (i = 0; i < vlen; ++i) { \ - GETCHAR(cichar, p); \ - if (cichar != val[i]) \ - goto bad; \ - } \ - try.neg = 0; \ - } - - REJCISHORT(CI_MRU, neg_mru, go->mru); - REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap); - REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype); - if (!go->neg_chap) { - REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP); - } - REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period); - REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT); - REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber); - REJCIVOID(CI_PCOMPRESSION, neg_pcompression); - REJCIVOID(CI_ACCOMPRESSION, neg_accompression); - REJCISHORT(CI_MRRU, neg_mrru, go->mrru); - REJCIVOID(CI_SSNHF, neg_ssnhf); - REJCIENDP(CI_EPDISC, neg_endpoint, go->endpoint.class, - go->endpoint.value, go->endpoint.length); - - /* - * If there are any remaining CIs, then this packet is bad. - */ - if (len != 0) - goto bad; - /* - * Now we can update state. - */ - if (f->state != OPENED) - *go = try; - return 1; - -bad: - LCPDEBUG(("lcp_rejci: received bad Reject!")); - return 0; -} - - -/* - * lcp_reqci - Check the peer's requested CIs and send appropriate response. - * - * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified - * appropriately. If reject_if_disagree is non-zero, doesn't return - * CONFNAK; returns CONFREJ if it can't return CONFACK. - */ -static int -lcp_reqci(f, inp, lenp, reject_if_disagree) - fsm *f; - u_char *inp; /* Requested CIs */ - int *lenp; /* Length of requested CIs */ - int reject_if_disagree; -{ - lcp_options *go = &lcp_gotoptions[f->unit]; - lcp_options *ho = &lcp_hisoptions[f->unit]; - lcp_options *ao = &lcp_allowoptions[f->unit]; - u_char *cip, *next; /* Pointer to current and next CIs */ - int cilen, citype, cichar; /* Parsed len, type, char value */ - u_short cishort; /* Parsed short value */ - u_int32_t cilong; /* Parse long value */ - int rc = CONFACK; /* Final packet return code */ - int orc; /* Individual option return code */ - u_char *p; /* Pointer to next char to parse */ - u_char *rejp; /* Pointer to next char in reject frame */ - u_char *nakp; /* Pointer to next char in Nak frame */ - int l = *lenp; /* Length left */ - - /* - * Reset all his options. - */ - BZERO(ho, sizeof(*ho)); - - /* - * Process all his options. - */ - next = inp; - nakp = nak_buffer; - rejp = inp; - while (l) { - orc = CONFACK; /* Assume success */ - cip = p = next; /* Remember begining of CI */ - if (l < 2 || /* Not enough data for CI header or */ - p[1] < 2 || /* CI length too small or */ - p[1] > l) { /* CI length too big? */ - LCPDEBUG(("lcp_reqci: bad CI length!")); - orc = CONFREJ; /* Reject bad CI */ - cilen = l; /* Reject till end of packet */ - l = 0; /* Don't loop again */ - citype = 0; - goto endswitch; - } - GETCHAR(citype, p); /* Parse CI type */ - GETCHAR(cilen, p); /* Parse CI length */ - l -= cilen; /* Adjust remaining length */ - next += cilen; /* Step to next CI */ - - switch (citype) { /* Check CI type */ - case CI_MRU: - if (!ao->neg_mru || /* Allow option? */ - cilen != CILEN_SHORT) { /* Check CI length */ - orc = CONFREJ; /* Reject CI */ - break; - } - GETSHORT(cishort, p); /* Parse MRU */ - - /* - * He must be able to receive at least our minimum. - * No need to check a maximum. If he sends a large number, - * we'll just ignore it. - */ - if (cishort < MINMRU) { - orc = CONFNAK; /* Nak CI */ - PUTCHAR(CI_MRU, nakp); - PUTCHAR(CILEN_SHORT, nakp); - PUTSHORT(MINMRU, nakp); /* Give him a hint */ - break; - } - ho->neg_mru = 1; /* Remember he sent MRU */ - ho->mru = cishort; /* And remember value */ - break; - - case CI_ASYNCMAP: - if (!ao->neg_asyncmap || - cilen != CILEN_LONG) { - orc = CONFREJ; - break; - } - GETLONG(cilong, p); - - /* - * Asyncmap must have set at least the bits - * which are set in lcp_allowoptions[unit].asyncmap. - */ - if ((ao->asyncmap & ~cilong) != 0) { - orc = CONFNAK; - PUTCHAR(CI_ASYNCMAP, nakp); - PUTCHAR(CILEN_LONG, nakp); - PUTLONG(ao->asyncmap | cilong, nakp); - break; - } - ho->neg_asyncmap = 1; - ho->asyncmap = cilong; - break; - - case CI_AUTHTYPE: - if (cilen < CILEN_SHORT || - !(ao->neg_upap || ao->neg_chap)) { - /* - * Reject the option if we're not willing to authenticate. - */ - orc = CONFREJ; - break; - } - GETSHORT(cishort, p); - - /* - * Authtype must be PAP or CHAP. - * - * Note: if both ao->neg_upap and ao->neg_chap are set, - * and the peer sends a Configure-Request with two - * authenticate-protocol requests, one for CHAP and one - * for UPAP, then we will reject the second request. - * Whether we end up doing CHAP or UPAP depends then on - * the ordering of the CIs in the peer's Configure-Request. - */ - - if (cishort == PPP_PAP) { - if (ho->neg_chap || /* we've already accepted CHAP */ - cilen != CILEN_SHORT) { - LCPDEBUG(("lcp_reqci: rcvd AUTHTYPE PAP, rejecting...")); - orc = CONFREJ; - break; - } - if (!ao->neg_upap) { /* we don't want to do PAP */ - orc = CONFNAK; /* NAK it and suggest CHAP */ - PUTCHAR(CI_AUTHTYPE, nakp); - PUTCHAR(CILEN_CHAP, nakp); - PUTSHORT(PPP_CHAP, nakp); - PUTCHAR(ao->chap_mdtype, nakp); - /* XXX if we can do CHAP_MICROSOFT as well, we should - probably put in another option saying so */ - break; - } - ho->neg_upap = 1; - break; - } - if (cishort == PPP_CHAP) { - if (ho->neg_upap || /* we've already accepted PAP */ - cilen != CILEN_CHAP) { - LCPDEBUG(("lcp_reqci: rcvd AUTHTYPE CHAP, rejecting...")); - orc = CONFREJ; - break; - } - if (!ao->neg_chap) { /* we don't want to do CHAP */ - orc = CONFNAK; /* NAK it and suggest PAP */ - PUTCHAR(CI_AUTHTYPE, nakp); - PUTCHAR(CILEN_SHORT, nakp); - PUTSHORT(PPP_PAP, nakp); - break; - } - GETCHAR(cichar, p); /* get digest type*/ - if (cichar != CHAP_DIGEST_MD5 -#ifdef CHAPMS - && cichar != CHAP_MICROSOFT -#endif - ) { - orc = CONFNAK; - PUTCHAR(CI_AUTHTYPE, nakp); - PUTCHAR(CILEN_CHAP, nakp); - PUTSHORT(PPP_CHAP, nakp); - PUTCHAR(ao->chap_mdtype, nakp); - break; - } - ho->chap_mdtype = cichar; /* save md type */ - ho->neg_chap = 1; - break; - } - - /* - * We don't recognize the protocol they're asking for. - * Nak it with something we're willing to do. - * (At this point we know ao->neg_upap || ao->neg_chap.) - */ - orc = CONFNAK; - PUTCHAR(CI_AUTHTYPE, nakp); - if (ao->neg_chap) { - PUTCHAR(CILEN_CHAP, nakp); - PUTSHORT(PPP_CHAP, nakp); - PUTCHAR(ao->chap_mdtype, nakp); - } else { - PUTCHAR(CILEN_SHORT, nakp); - PUTSHORT(PPP_PAP, nakp); - } - break; - - case CI_QUALITY: - if (!ao->neg_lqr || - cilen != CILEN_LQR) { - orc = CONFREJ; - break; - } - - GETSHORT(cishort, p); - GETLONG(cilong, p); - - /* - * Check the protocol and the reporting period. - * XXX When should we Nak this, and what with? - */ - if (cishort != PPP_LQR) { - orc = CONFNAK; - PUTCHAR(CI_QUALITY, nakp); - PUTCHAR(CILEN_LQR, nakp); - PUTSHORT(PPP_LQR, nakp); - PUTLONG(ao->lqr_period, nakp); - break; - } - break; - - case CI_MAGICNUMBER: - if (!(ao->neg_magicnumber || go->neg_magicnumber) || - cilen != CILEN_LONG) { - orc = CONFREJ; - break; - } - GETLONG(cilong, p); - - /* - * He must have a different magic number. - */ - if (go->neg_magicnumber && - cilong == go->magicnumber) { - cilong = magic(); /* Don't put magic() inside macro! */ - orc = CONFNAK; - PUTCHAR(CI_MAGICNUMBER, nakp); - PUTCHAR(CILEN_LONG, nakp); - PUTLONG(cilong, nakp); - break; - } - ho->neg_magicnumber = 1; - ho->magicnumber = cilong; - break; - - - case CI_PCOMPRESSION: - if (!ao->neg_pcompression || - cilen != CILEN_VOID) { - orc = CONFREJ; - break; - } - ho->neg_pcompression = 1; - break; - - case CI_ACCOMPRESSION: - if (!ao->neg_accompression || - cilen != CILEN_VOID) { - orc = CONFREJ; - break; - } - ho->neg_accompression = 1; - break; - - case CI_MRRU: - if (!ao->neg_mrru || !multilink || - cilen != CILEN_SHORT) { - orc = CONFREJ; - break; - } - - GETSHORT(cishort, p); - /* possibly should insist on a minimum/maximum MRRU here */ - ho->neg_mrru = 1; - ho->mrru = cishort; - break; - - case CI_SSNHF: - if (!ao->neg_ssnhf || !multilink || - cilen != CILEN_VOID) { - orc = CONFREJ; - break; - } - ho->neg_ssnhf = 1; - break; - - case CI_EPDISC: - if (!ao->neg_endpoint || - cilen < CILEN_CHAR || - cilen > CILEN_CHAR + MAX_ENDP_LEN) { - orc = CONFREJ; - break; - } - GETCHAR(cichar, p); - cilen -= CILEN_CHAR; - ho->neg_endpoint = 1; - ho->endpoint.class = cichar; - ho->endpoint.length = cilen; - BCOPY(p, ho->endpoint.value, cilen); - INCPTR(cilen, p); - break; - - default: - LCPDEBUG(("lcp_reqci: rcvd unknown option %d", citype)); - orc = CONFREJ; - break; - } - -endswitch: - if (orc == CONFACK && /* Good CI */ - rc != CONFACK) /* but prior CI wasnt? */ - continue; /* Don't send this one */ - - if (orc == CONFNAK) { /* Nak this CI? */ - if (reject_if_disagree /* Getting fed up with sending NAKs? */ - && citype != CI_MAGICNUMBER) { - orc = CONFREJ; /* Get tough if so */ - } else { - if (rc == CONFREJ) /* Rejecting prior CI? */ - continue; /* Don't send this one */ - rc = CONFNAK; - } - } - if (orc == CONFREJ) { /* Reject this CI */ - rc = CONFREJ; - if (cip != rejp) /* Need to move rejected CI? */ - BCOPY(cip, rejp, cilen); /* Move it */ - INCPTR(cilen, rejp); /* Update output pointer */ - } - } - - /* - * If we wanted to send additional NAKs (for unsent CIs), the - * code would go here. The extra NAKs would go at *nakp. - * At present there are no cases where we want to ask the - * peer to negotiate an option. - */ - - switch (rc) { - case CONFACK: - *lenp = next - inp; - break; - case CONFNAK: - /* - * Copy the Nak'd options from the nak_buffer to the caller's buffer. - */ - *lenp = nakp - nak_buffer; - BCOPY(nak_buffer, inp, *lenp); - break; - case CONFREJ: - *lenp = rejp - inp; - break; - } - - LCPDEBUG(("lcp_reqci: returning CONF%s.", CODENAME(rc))); - return (rc); /* Return final code */ -} - - -/* - * lcp_up - LCP has come UP. - */ -static void -lcp_up(f) - fsm *f; -{ - lcp_options *wo = &lcp_wantoptions[f->unit]; - lcp_options *ho = &lcp_hisoptions[f->unit]; - lcp_options *go = &lcp_gotoptions[f->unit]; - lcp_options *ao = &lcp_allowoptions[f->unit]; - int mtu; - - if (!go->neg_magicnumber) - go->magicnumber = 0; - if (!ho->neg_magicnumber) - ho->magicnumber = 0; - - /* - * Set our MTU to the smaller of the MTU we wanted and - * the MRU our peer wanted. If we negotiated an MRU, - * set our MRU to the larger of value we wanted and - * the value we got in the negotiation. - * Note on the MTU: the link MTU can be the MRU the peer wanted, - * the interface MTU is set to the lower of that and the - * MTU we want to use. - */ - mtu = ho->neg_mru? ho->mru: PPP_MRU; -#ifdef HAVE_MULTILINK - if (!(multilink && go->neg_mrru && ho->neg_mrru)) -#endif /* HAVE_MULTILINK */ - netif_set_mtu(f->unit, MIN(mtu, ao->mru)); - ppp_send_config(f->unit, mtu, - (ho->neg_asyncmap? ho->asyncmap: 0xffffffff), - ho->neg_pcompression, ho->neg_accompression); - ppp_recv_config(f->unit, (go->neg_mru? MAX(wo->mru, go->mru): PPP_MRU), - (lax_recv? 0: go->neg_asyncmap? go->asyncmap: 0xffffffff), - go->neg_pcompression, go->neg_accompression); - - if (ho->neg_mru) - peer_mru[f->unit] = ho->mru; - - lcp_echo_lowerup(f->unit); /* Enable echo messages */ - - link_established(f->unit); -} - - -/* - * lcp_down - LCP has gone DOWN. - * - * Alert other protocols. - */ -static void -lcp_down(f) - fsm *f; -{ - lcp_options *go = &lcp_gotoptions[f->unit]; - - lcp_echo_lowerdown(f->unit); - - link_down(f->unit); - - ppp_send_config(f->unit, PPP_MRU, 0xffffffff, 0, 0); - ppp_recv_config(f->unit, PPP_MRU, - (go->neg_asyncmap? go->asyncmap: 0xffffffff), - go->neg_pcompression, go->neg_accompression); - peer_mru[f->unit] = PPP_MRU; -} - - -/* - * lcp_starting - LCP needs the lower layer up. - */ -static void -lcp_starting(f) - fsm *f; -{ - link_required(f->unit); -} - - -/* - * lcp_finished - LCP has finished with the lower layer. - */ -static void -lcp_finished(f) - fsm *f; -{ - link_terminated(f->unit); -} - - -/* - * lcp_printpkt - print the contents of an LCP packet. - */ -static char *lcp_codenames[] = { - "ConfReq", "ConfAck", "ConfNak", "ConfRej", - "TermReq", "TermAck", "CodeRej", "ProtRej", - "EchoReq", "EchoRep", "DiscReq" -}; - -static int -lcp_printpkt(p, plen, printer, arg) - u_char *p; - int plen; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int code, id, len, olen, i; - u_char *pstart, *optend; - u_short cishort; - u_int32_t cilong; - - if (plen < HEADERLEN) - return 0; - pstart = p; - GETCHAR(code, p); - GETCHAR(id, p); - GETSHORT(len, p); - if (len < HEADERLEN || len > plen) - return 0; - - if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) - printer(arg, " %s", lcp_codenames[code-1]); - else - printer(arg, " code=0x%x", code); - printer(arg, " id=0x%x", id); - len -= HEADERLEN; - switch (code) { - case CONFREQ: - case CONFACK: - case CONFNAK: - case CONFREJ: - /* print option list */ - while (len >= 2) { - GETCHAR(code, p); - GETCHAR(olen, p); - p -= 2; - if (olen < 2 || olen > len) { - break; - } - printer(arg, " <"); - len -= olen; - optend = p + olen; - switch (code) { - case CI_MRU: - if (olen == CILEN_SHORT) { - p += 2; - GETSHORT(cishort, p); - printer(arg, "mru %d", cishort); - } - break; - case CI_ASYNCMAP: - if (olen == CILEN_LONG) { - p += 2; - GETLONG(cilong, p); - printer(arg, "asyncmap 0x%x", cilong); - } - break; - case CI_AUTHTYPE: - if (olen >= CILEN_SHORT) { - p += 2; - printer(arg, "auth "); - GETSHORT(cishort, p); - switch (cishort) { - case PPP_PAP: - printer(arg, "pap"); - break; - case PPP_CHAP: - printer(arg, "chap"); - if (p < optend) { - switch (*p) { - case CHAP_DIGEST_MD5: - printer(arg, " MD5"); - ++p; - break; -#ifdef CHAPMS - case CHAP_MICROSOFT: - printer(arg, " m$oft"); - ++p; - break; -#endif - } - } - break; - default: - printer(arg, "0x%x", cishort); - } - } - break; - case CI_QUALITY: - if (olen >= CILEN_SHORT) { - p += 2; - printer(arg, "quality "); - GETSHORT(cishort, p); - switch (cishort) { - case PPP_LQR: - printer(arg, "lqr"); - break; - default: - printer(arg, "0x%x", cishort); - } - } - break; - case CI_CALLBACK: - if (olen >= CILEN_CHAR) { - p += 2; - printer(arg, "callback "); - GETCHAR(cishort, p); - switch (cishort) { - case CBCP_OPT: - printer(arg, "CBCP"); - break; - default: - printer(arg, "0x%x", cishort); - } - } - break; - case CI_MAGICNUMBER: - if (olen == CILEN_LONG) { - p += 2; - GETLONG(cilong, p); - printer(arg, "magic 0x%x", cilong); - } - break; - case CI_PCOMPRESSION: - if (olen == CILEN_VOID) { - p += 2; - printer(arg, "pcomp"); - } - break; - case CI_ACCOMPRESSION: - if (olen == CILEN_VOID) { - p += 2; - printer(arg, "accomp"); - } - break; - case CI_MRRU: - if (olen == CILEN_SHORT) { - p += 2; - GETSHORT(cishort, p); - printer(arg, "mrru %d", cishort); - } - break; - case CI_SSNHF: - if (olen == CILEN_VOID) { - p += 2; - printer(arg, "ssnhf"); - } - break; - case CI_EPDISC: -#ifdef HAVE_MULTILINK - if (olen >= CILEN_CHAR) { - struct epdisc epd; - p += 2; - GETCHAR(epd.class, p); - epd.length = olen - CILEN_CHAR; - if (epd.length > MAX_ENDP_LEN) - epd.length = MAX_ENDP_LEN; - if (epd.length > 0) { - BCOPY(p, epd.value, epd.length); - p += epd.length; - } - printer(arg, "endpoint [%s]", epdisc_to_str(&epd)); - } -#else - printer(arg, "endpoint"); -#endif - break; - } - while (p < optend) { - GETCHAR(code, p); - printer(arg, " %.2x", code); - } - printer(arg, ">"); - } - break; - - case TERMACK: - case TERMREQ: - if (len > 0 && *p >= ' ' && *p < 0x7f) { - printer(arg, " "); - print_string((char *)p, len, printer, arg); - p += len; - len = 0; - } - break; - - case ECHOREQ: - case ECHOREP: - case DISCREQ: - if (len >= 4) { - GETLONG(cilong, p); - printer(arg, " magic=0x%x", cilong); - p += 4; - len -= 4; - } - break; - } - - /* print the rest of the bytes in the packet */ - for (i = 0; i < len && i < 32; ++i) { - GETCHAR(code, p); - printer(arg, " %.2x", code); - } - if (i < len) { - printer(arg, " ..."); - p += len - i; - } - - return p - pstart; -} - -/* - * Time to shut down the link because there is nothing out there. - */ - -static -void LcpLinkFailure (f) - fsm *f; -{ - if (f->state == OPENED) { - info("No response to %d echo-requests", lcp_echos_pending); - notice("Serial link appears to be disconnected."); - lcp_close(f->unit, "Peer not responding"); - status = EXIT_PEER_DEAD; - } -} - -/* - * Timer expired for the LCP echo requests from this process. - */ - -static void -LcpEchoCheck (f) - fsm *f; -{ - LcpSendEchoRequest (f); - if (f->state != OPENED) - return; - - /* - * Start the timer for the next interval. - */ - if (lcp_echo_timer_running) - warn("assertion lcp_echo_timer_running==0 failed"); - TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval); - lcp_echo_timer_running = 1; -} - -/* - * LcpEchoTimeout - Timer expired on the LCP echo - */ - -static void -LcpEchoTimeout (arg) - void *arg; -{ - if (lcp_echo_timer_running != 0) { - lcp_echo_timer_running = 0; - LcpEchoCheck ((fsm *) arg); - } -} - -/* - * LcpEchoReply - LCP has received a reply to the echo - */ - -static void -lcp_received_echo_reply (f, id, inp, len) - fsm *f; - int id; - u_char *inp; - int len; -{ - u_int32_t magic; - - /* Check the magic number - don't count replies from ourselves. */ - if (len < 4) { - dbglog("lcp: received short Echo-Reply, length %d", len); - return; - } - GETLONG(magic, inp); - if (lcp_gotoptions[f->unit].neg_magicnumber - && magic == lcp_gotoptions[f->unit].magicnumber) { - warn("appear to have received our own echo-reply!"); - return; - } - - /* Reset the number of outstanding echo frames */ - lcp_echos_pending = 0; -} - -/* - * LcpSendEchoRequest - Send an echo request frame to the peer - */ - -static void -LcpSendEchoRequest (f) - fsm *f; -{ - u_int32_t lcp_magic; - u_char pkt[4], *pktp; - - /* - * Detect the failure of the peer at this point. - */ - if (lcp_echo_fails != 0) { - if (lcp_echos_pending >= lcp_echo_fails) { - LcpLinkFailure(f); - lcp_echos_pending = 0; - } - } - - /* - * Make and send the echo request frame. - */ - if (f->state == OPENED) { - lcp_magic = lcp_gotoptions[f->unit].magicnumber; - pktp = pkt; - PUTLONG(lcp_magic, pktp); - fsm_sdata(f, ECHOREQ, lcp_echo_number++ & 0xFF, pkt, pktp - pkt); - ++lcp_echos_pending; - } -} - -/* - * lcp_echo_lowerup - Start the timer for the LCP frame - */ - -static void -lcp_echo_lowerup (unit) - int unit; -{ - fsm *f = &lcp_fsm[unit]; - - /* Clear the parameters for generating echo frames */ - lcp_echos_pending = 0; - lcp_echo_number = 0; - lcp_echo_timer_running = 0; - - /* If a timeout interval is specified then start the timer */ - if (lcp_echo_interval != 0) - LcpEchoCheck (f); -} - -/* - * lcp_echo_lowerdown - Stop the timer for the LCP frame - */ - -static void -lcp_echo_lowerdown (unit) - int unit; -{ - fsm *f = &lcp_fsm[unit]; - - if (lcp_echo_timer_running != 0) { - UNTIMEOUT (LcpEchoTimeout, f); - lcp_echo_timer_running = 0; - } -} diff --git a/mdk-stage1/ppp/pppd/lcp.h b/mdk-stage1/ppp/pppd/lcp.h deleted file mode 100644 index b87a9295e..000000000 --- a/mdk-stage1/ppp/pppd/lcp.h +++ /dev/null @@ -1,95 +0,0 @@ -/* - * lcp.h - Link Control Protocol definitions. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -/* - * Options. - */ -#define CI_MRU 1 /* Maximum Receive Unit */ -#define CI_ASYNCMAP 2 /* Async Control Character Map */ -#define CI_AUTHTYPE 3 /* Authentication Type */ -#define CI_QUALITY 4 /* Quality Protocol */ -#define CI_MAGICNUMBER 5 /* Magic Number */ -#define CI_PCOMPRESSION 7 /* Protocol Field Compression */ -#define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */ -#define CI_CALLBACK 13 /* callback */ -#define CI_MRRU 17 /* max reconstructed receive unit; multilink */ -#define CI_SSNHF 18 /* short sequence numbers for multilink */ -#define CI_EPDISC 19 /* endpoint discriminator */ - -/* - * LCP-specific packet types. - */ -#define PROTREJ 8 /* Protocol Reject */ -#define ECHOREQ 9 /* Echo Request */ -#define ECHOREP 10 /* Echo Reply */ -#define DISCREQ 11 /* Discard Request */ -#define CBCP_OPT 6 /* Use callback control protocol */ - -/* - * The state of options is described by an lcp_options structure. - */ -typedef struct lcp_options { - bool passive; /* Don't die if we don't get a response */ - bool silent; /* Wait for the other end to start first */ - bool restart; /* Restart vs. exit after close */ - bool neg_mru; /* Negotiate the MRU? */ - bool neg_asyncmap; /* Negotiate the async map? */ - bool neg_upap; /* Ask for UPAP authentication? */ - bool neg_chap; /* Ask for CHAP authentication? */ - bool neg_magicnumber; /* Ask for magic number? */ - bool neg_pcompression; /* HDLC Protocol Field Compression? */ - bool neg_accompression; /* HDLC Address/Control Field Compression? */ - bool neg_lqr; /* Negotiate use of Link Quality Reports */ - bool neg_cbcp; /* Negotiate use of CBCP */ - bool neg_mrru; /* negotiate multilink MRRU */ - bool neg_ssnhf; /* negotiate short sequence numbers */ - bool neg_endpoint; /* negotiate endpoint discriminator */ - int mru; /* Value of MRU */ - int mrru; /* Value of MRRU, and multilink enable */ - u_char chap_mdtype; /* which MD type (hashing algorithm) */ - u_int32_t asyncmap; /* Value of async map */ - u_int32_t magicnumber; - int numloops; /* Number of loops during magic number neg. */ - u_int32_t lqr_period; /* Reporting period for LQR 1/100ths second */ - struct epdisc endpoint; /* endpoint discriminator */ -} lcp_options; - -extern fsm lcp_fsm[]; -extern lcp_options lcp_wantoptions[]; -extern lcp_options lcp_gotoptions[]; -extern lcp_options lcp_allowoptions[]; -extern lcp_options lcp_hisoptions[]; - -#define DEFMRU 1500 /* Try for this */ -#define MINMRU 128 /* No MRUs below this */ -#define MAXMRU 16384 /* Normally limit MRU to this */ - -void lcp_open __P((int)); -void lcp_close __P((int, char *)); -void lcp_lowerup __P((int)); -void lcp_lowerdown __P((int)); -void lcp_sprotrej __P((int, u_char *, int)); /* send protocol reject */ - -extern struct protent lcp_protent; - -/* Default number of times we receive our magic number from the peer - before deciding the link is looped-back. */ -#define DEFLOOPBACKFAIL 10 diff --git a/mdk-stage1/ppp/pppd/magic.c b/mdk-stage1/ppp/pppd/magic.c deleted file mode 100644 index 1682dee03..000000000 --- a/mdk-stage1/ppp/pppd/magic.c +++ /dev/null @@ -1,88 +0,0 @@ -/* - * magic.c - PPP Magic Number routines. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -#include <stdlib.h> -#include <stdio.h> -#include <unistd.h> -#include <sys/types.h> -#include <sys/time.h> - -#include "pppd.h" -#include "magic.h" - -static const char rcsid[] = RCSID; - -extern long mrand48 __P((void)); -extern void srand48 __P((long)); - -/* - * magic_init - Initialize the magic number generator. - * - * Attempts to compute a random number seed which will not repeat. - * The current method uses the current hostid, current process ID - * and current time, currently. - */ -void -magic_init() -{ - long seed; - struct timeval t; - - gettimeofday(&t, NULL); - seed = get_host_seed() ^ t.tv_sec ^ t.tv_usec ^ getpid(); - srand48(seed); -} - -/* - * magic - Returns the next magic number. - */ -u_int32_t -magic() -{ - return (u_int32_t) mrand48(); -} - -#ifdef NO_DRAND48 -/* - * Substitute procedures for those systems which don't have - * drand48 et al. - */ - -double -drand48() -{ - return (double)random() / (double)0x7fffffffL; /* 2**31-1 */ -} - -long -mrand48() -{ - return random(); -} - -void -srand48(seedval) -long seedval; -{ - srandom((int)seedval); -} - -#endif diff --git a/mdk-stage1/ppp/pppd/magic.h b/mdk-stage1/ppp/pppd/magic.h deleted file mode 100644 index 1344626a3..000000000 --- a/mdk-stage1/ppp/pppd/magic.h +++ /dev/null @@ -1,23 +0,0 @@ -/* - * magic.h - PPP Magic Number definitions. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -void magic_init __P((void)); /* Initialize the magic number generator */ -u_int32_t magic __P((void)); /* Returns the next magic number */ diff --git a/mdk-stage1/ppp/pppd/main.c b/mdk-stage1/ppp/pppd/main.c deleted file mode 100644 index c074938cd..000000000 --- a/mdk-stage1/ppp/pppd/main.c +++ /dev/null @@ -1,1846 +0,0 @@ -/* - * main.c - Point-to-Point Protocol main module - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <signal.h> -#include <errno.h> -#include <fcntl.h> -#include <syslog.h> -#include <netdb.h> -#include <utmp.h> -#include <pwd.h> -#include <setjmp.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <sys/time.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> - -#include "pppd.h" -#include "magic.h" -#include "fsm.h" -#include "lcp.h" -#include "ipcp.h" -#ifdef INET6 -#include "ipv6cp.h" -#endif -#include "upap.h" -#include "chap.h" -#include "ccp.h" -#include "pathnames.h" -#include "tdb.h" - -#ifdef CBCP_SUPPORT -#include "cbcp.h" -#endif - -#ifdef IPX_CHANGE -#include "ipxcp.h" -#endif /* IPX_CHANGE */ -#ifdef AT_CHANGE -#include "atcp.h" -#endif - -static const char rcsid[] = RCSID; - -/* interface vars */ -char ifname[32]; /* Interface name */ -int ifunit; /* Interface unit number */ - -struct channel *the_channel; - -char *progname; /* Name of this program */ -char hostname[MAXNAMELEN]; /* Our hostname */ -static char pidfilename[MAXPATHLEN]; /* name of pid file */ -static char linkpidfile[MAXPATHLEN]; /* name of linkname pid file */ -char ppp_devnam[MAXPATHLEN]; /* name of PPP tty (maybe ttypx) */ -uid_t uid; /* Our real user-id */ -struct notifier *pidchange = NULL; -struct notifier *phasechange = NULL; -struct notifier *exitnotify = NULL; -struct notifier *sigreceived = NULL; - -int hungup; /* terminal has been hung up */ -int privileged; /* we're running as real uid root */ -int need_holdoff; /* need holdoff period before restarting */ -int detached; /* have detached from terminal */ -volatile int status; /* exit status for pppd */ -int unsuccess; /* # unsuccessful connection attempts */ -int do_callback; /* != 0 if we should do callback next */ -int doing_callback; /* != 0 if we are doing callback */ -TDB_CONTEXT *pppdb; /* database for storing status etc. */ -char db_key[32]; - -int (*holdoff_hook) __P((void)) = NULL; -int (*new_phase_hook) __P((int)) = NULL; - -static int conn_running; /* we have a [dis]connector running */ -static int devfd; /* fd of underlying device */ -static int fd_ppp = -1; /* fd for talking PPP */ -static int fd_loop; /* fd for getting demand-dial packets */ - -int phase; /* where the link is at */ -int kill_link; -int open_ccp_flag; -int listen_time; -int got_sigusr2; -int got_sigterm; -int got_sighup; - -static int waiting; -static sigjmp_buf sigjmp; - -char **script_env; /* Env. variable values for scripts */ -int s_env_nalloc; /* # words avail at script_env */ - -u_char outpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for outgoing packet */ -u_char inpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for incoming packet */ - -static int n_children; /* # child processes still running */ -static int got_sigchld; /* set if we have received a SIGCHLD */ - -int privopen; /* don't lock, open device as root */ - -char *no_ppp_msg = "Sorry - this system lacks PPP kernel support\n"; - -GIDSET_TYPE groups[NGROUPS_MAX];/* groups the user is in */ -int ngroups; /* How many groups valid in groups */ - -static struct timeval start_time; /* Time when link was started. */ - -struct pppd_stats link_stats; -int link_connect_time; -int link_stats_valid; - -/* - * We maintain a list of child process pids and - * functions to call when they exit. - */ -struct subprocess { - pid_t pid; - char *prog; - void (*done) __P((void *)); - void *arg; - struct subprocess *next; -}; - -static struct subprocess *children; - -/* Prototypes for procedures local to this file. */ - -static void setup_signals __P((void)); -static void create_pidfile __P((void)); -static void create_linkpidfile __P((void)); -static void cleanup __P((void)); -static void get_input __P((void)); -static void calltimeout __P((void)); -static struct timeval *timeleft __P((struct timeval *)); -static void kill_my_pg __P((int)); -static void hup __P((int)); -static void term __P((int)); -static void chld __P((int)); -static void toggle_debug __P((int)); -static void open_ccp __P((int)); -static void bad_signal __P((int)); -static void holdoff_end __P((void *)); -static int reap_kids __P((int waitfor)); -static void update_db_entry __P((void)); -static void add_db_key __P((const char *)); -static void delete_db_key __P((const char *)); -static void cleanup_db __P((void)); -static void handle_events __P((void)); - -extern char *ttyname __P((int)); -extern char *getlogin __P((void)); -int main __P((int, char *[])); - -#ifdef ultrix -#undef O_NONBLOCK -#define O_NONBLOCK O_NDELAY -#endif - -#ifdef ULTRIX -#define setlogmask(x) -#endif - -/* - * PPP Data Link Layer "protocol" table. - * One entry per supported protocol. - * The last entry must be NULL. - */ -struct protent *protocols[] = { - &lcp_protent, - &pap_protent, - &chap_protent, -#ifdef CBCP_SUPPORT - &cbcp_protent, -#endif - &ipcp_protent, -#ifdef INET6 - &ipv6cp_protent, -#endif - &ccp_protent, -#ifdef IPX_CHANGE - &ipxcp_protent, -#endif -#ifdef AT_CHANGE - &atcp_protent, -#endif - NULL -}; - -/* - * If PPP_DRV_NAME is not defined, use the default "ppp" as the device name. - */ -#if !defined(PPP_DRV_NAME) -#define PPP_DRV_NAME "ppp" -#endif /* !defined(PPP_DRV_NAME) */ - -int -main(argc, argv) - int argc; - char *argv[]; -{ - int i, t; - char *p; - struct passwd *pw; - struct protent *protp; - char numbuf[16]; - - new_phase(PHASE_INITIALIZE); - - /* - * Ensure that fds 0, 1, 2 are open, to /dev/null if nowhere else. - * This way we can close 0, 1, 2 in detach() without clobbering - * a fd that we are using. - */ - if ((i = open("/dev/null", O_RDWR)) >= 0) { - while (0 <= i && i <= 2) - i = dup(i); - if (i >= 0) - close(i); - } - - script_env = NULL; - - /* Initialize syslog facilities */ - reopen_log(); - - if (gethostname(hostname, MAXNAMELEN) < 0 ) { - option_error("Couldn't get hostname: %m"); - exit(1); - } - hostname[MAXNAMELEN-1] = 0; - - /* make sure we don't create world or group writable files. */ - umask(umask(0777) | 022); - - uid = getuid(); - privileged = uid == 0; - slprintf(numbuf, sizeof(numbuf), "%d", uid); - script_setenv("ORIG_UID", numbuf, 0); - - ngroups = getgroups(NGROUPS_MAX, groups); - - /* - * Initialize magic number generator now so that protocols may - * use magic numbers in initialization. - */ - magic_init(); - - /* - * Initialize each protocol. - */ - for (i = 0; (protp = protocols[i]) != NULL; ++i) - (*protp->init)(0); - - /* - * Initialize the default channel. - */ - tty_init(); - - progname = *argv; - - /* - * Parse, in order, the system options file, the user's options file, - * and the command line arguments. - */ - if (!options_from_file(_PATH_SYSOPTIONS, !privileged, 0, 1) - || !options_from_user() - || !parse_args(argc-1, argv+1)) - exit(EXIT_OPTION_ERROR); - devnam_fixed = 1; /* can no longer change device name */ - - /* - * Work out the device name, if it hasn't already been specified, - * and parse the tty's options file. - */ - if (the_channel->process_extra_options) - (*the_channel->process_extra_options)(); - - if (debug) - setlogmask(LOG_UPTO(LOG_DEBUG)); - - /* - * Check that we are running as root. - */ - if (geteuid() != 0) { - option_error("must be root to run %s, since it is not setuid-root", - argv[0]); - exit(EXIT_NOT_ROOT); - } - - if (!ppp_available()) { - option_error("%s", no_ppp_msg); - exit(EXIT_NO_KERNEL_SUPPORT); - } - - /* - * Check that the options given are valid and consistent. - */ - check_options(); - if (!sys_check_options()) - exit(EXIT_OPTION_ERROR); - auth_check_options(); -#ifdef HAVE_MULTILINK - mp_check_options(); -#endif - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (protp->check_options != NULL) - (*protp->check_options)(); - if (the_channel->check_options) - (*the_channel->check_options)(); - - - if (dump_options || dryrun) { - init_pr_log(NULL, LOG_INFO); - print_options(pr_log, NULL); - end_pr_log(); - if (dryrun) - die(0); - } - - /* - * Initialize system-dependent stuff. - */ - sys_init(); - - pppdb = tdb_open(_PATH_PPPDB, 0, 0, O_RDWR|O_CREAT, 0644); - if (pppdb != NULL) { - slprintf(db_key, sizeof(db_key), "pppd%d", getpid()); - update_db_entry(); - } else { - warn("Warning: couldn't open ppp database %s", _PATH_PPPDB); - if (multilink) { - warn("Warning: disabling multilink"); - multilink = 0; - } - } - - /* - * Detach ourselves from the terminal, if required, - * and identify who is running us. - */ - if (!nodetach && !updetach) - detach(); - p = getlogin(); - if (p == NULL) { - pw = getpwuid(uid); - if (pw != NULL && pw->pw_name != NULL) - p = pw->pw_name; - else - p = "(unknown)"; - } - syslog(LOG_NOTICE, "pppd %s started by %s, uid %d", VERSION, p, uid); - script_setenv("PPPLOGNAME", p, 0); - - if (devnam[0]) - script_setenv("DEVICE", devnam, 1); - slprintf(numbuf, sizeof(numbuf), "%d", getpid()); - script_setenv("PPPD_PID", numbuf, 1); - - setup_signals(); - - waiting = 0; - - create_linkpidfile(); - - /* - * If we're doing dial-on-demand, set up the interface now. - */ - if (demand) { - /* - * Open the loopback channel and set it up to be the ppp interface. - */ - tdb_writelock(pppdb); - fd_loop = open_ppp_loopback(); - set_ifunit(1); - tdb_writeunlock(pppdb); - - /* - * Configure the interface and mark it up, etc. - */ - demand_conf(); - } - - do_callback = 0; - for (;;) { - - listen_time = 0; - need_holdoff = 1; - devfd = -1; - status = EXIT_OK; - ++unsuccess; - doing_callback = do_callback; - do_callback = 0; - - if (demand && !doing_callback) { - /* - * Don't do anything until we see some activity. - */ - new_phase(PHASE_DORMANT); - demand_unblock(); - add_fd(fd_loop); - for (;;) { - handle_events(); - if (kill_link && !persist) - break; - if (get_loop_output()) - break; - } - remove_fd(fd_loop); - if (kill_link && !persist) - break; - - /* - * Now we want to bring up the link. - */ - demand_block(); - info("Starting link"); - } - - new_phase(PHASE_SERIALCONN); - - devfd = the_channel->connect(); - if (devfd < 0) - goto fail; - - /* set up the serial device as a ppp interface */ - tdb_writelock(pppdb); - fd_ppp = the_channel->establish_ppp(devfd); - if (fd_ppp < 0) { - tdb_writeunlock(pppdb); - status = EXIT_FATAL_ERROR; - goto disconnect; - } - - if (!demand && ifunit >= 0) - set_ifunit(1); - tdb_writeunlock(pppdb); - - /* - * Start opening the connection and wait for - * incoming events (reply, timeout, etc.). - */ - notice("Connect: %s <--> %s", ifname, ppp_devnam); - gettimeofday(&start_time, NULL); - link_stats_valid = 0; - script_unsetenv("CONNECT_TIME"); - script_unsetenv("BYTES_SENT"); - script_unsetenv("BYTES_RCVD"); - lcp_lowerup(0); - - add_fd(fd_ppp); - lcp_open(0); /* Start protocol */ - status = EXIT_NEGOTIATION_FAILED; - new_phase(PHASE_ESTABLISH); - while (phase != PHASE_DEAD) { - handle_events(); - get_input(); - if (kill_link) - lcp_close(0, "User request"); - if (open_ccp_flag) { - if (phase == PHASE_NETWORK || phase == PHASE_RUNNING) { - ccp_fsm[0].flags = OPT_RESTART; /* clears OPT_SILENT */ - (*ccp_protent.open)(0); - } - } - } - - /* - * Print connect time and statistics. - */ - if (link_stats_valid) { - int t = (link_connect_time + 5) / 6; /* 1/10ths of minutes */ - info("Connect time %d.%d minutes.", t/10, t%10); - info("Sent %u bytes, received %u bytes.", - link_stats.bytes_out, link_stats.bytes_in); - } - - /* - * Delete pid file before disestablishing ppp. Otherwise it - * can happen that another pppd gets the same unit and then - * we delete its pid file. - */ - if (!demand) { - if (pidfilename[0] != 0 - && unlink(pidfilename) < 0 && errno != ENOENT) - warn("unable to delete pid file %s: %m", pidfilename); - pidfilename[0] = 0; - } - - /* - * If we may want to bring the link up again, transfer - * the ppp unit back to the loopback. Set the - * real serial device back to its normal mode of operation. - */ - remove_fd(fd_ppp); - clean_check(); - the_channel->disestablish_ppp(devfd); - fd_ppp = -1; - if (!hungup) - lcp_lowerdown(0); - if (!demand) - script_unsetenv("IFNAME"); - - /* - * Run disconnector script, if requested. - * XXX we may not be able to do this if the line has hung up! - */ - disconnect: - new_phase(PHASE_DISCONNECT); - the_channel->disconnect(); - - fail: - if (the_channel->cleanup) - (*the_channel->cleanup)(); - - if (!demand) { - if (pidfilename[0] != 0 - && unlink(pidfilename) < 0 && errno != ENOENT) - warn("unable to delete pid file %s: %m", pidfilename); - pidfilename[0] = 0; - } - - if (!persist || (maxfail > 0 && unsuccess >= maxfail)) - break; - - if (demand) - demand_discard(); - t = need_holdoff? holdoff: 0; - if (holdoff_hook) - t = (*holdoff_hook)(); - if (t > 0) { - new_phase(PHASE_HOLDOFF); - TIMEOUT(holdoff_end, NULL, t); - do { - handle_events(); - if (kill_link) - new_phase(PHASE_DORMANT); /* allow signal to end holdoff */ - } while (phase == PHASE_HOLDOFF); - if (!persist) - break; - } - } - - /* Wait for scripts to finish */ - /* XXX should have a timeout here */ - while (n_children > 0) { - if (debug) { - struct subprocess *chp; - dbglog("Waiting for %d child processes...", n_children); - for (chp = children; chp != NULL; chp = chp->next) - dbglog(" script %s, pid %d", chp->prog, chp->pid); - } - if (reap_kids(1) < 0) - break; - } - - die(status); - return 0; -} - -/* - * handle_events - wait for something to happen and respond to it. - */ -static void -handle_events() -{ - struct timeval timo; - sigset_t mask; - - kill_link = open_ccp_flag = 0; - if (sigsetjmp(sigjmp, 1) == 0) { - sigprocmask(SIG_BLOCK, &mask, NULL); - if (got_sighup || got_sigterm || got_sigusr2 || got_sigchld) { - sigprocmask(SIG_UNBLOCK, &mask, NULL); - } else { - waiting = 1; - sigprocmask(SIG_UNBLOCK, &mask, NULL); - wait_input(timeleft(&timo)); - } - } - waiting = 0; - calltimeout(); - if (got_sighup) { - kill_link = 1; - got_sighup = 0; - if (status != EXIT_HANGUP) - status = EXIT_USER_REQUEST; - } - if (got_sigterm) { - kill_link = 1; - persist = 0; - status = EXIT_USER_REQUEST; - got_sigterm = 0; - } - if (got_sigchld) { - reap_kids(0); /* Don't leave dead kids lying around */ - got_sigchld = 0; - } - if (got_sigusr2) { - open_ccp_flag = 1; - got_sigusr2 = 0; - } -} - -/* - * setup_signals - initialize signal handling. - */ -static void -setup_signals() -{ - struct sigaction sa; - sigset_t mask; - - /* - * Compute mask of all interesting signals and install signal handlers - * for each. Only one signal handler may be active at a time. Therefore, - * all other signals should be masked when any handler is executing. - */ - sigemptyset(&mask); - sigaddset(&mask, SIGHUP); - sigaddset(&mask, SIGINT); - sigaddset(&mask, SIGTERM); - sigaddset(&mask, SIGCHLD); - sigaddset(&mask, SIGUSR2); - -#define SIGNAL(s, handler) do { \ - sa.sa_handler = handler; \ - if (sigaction(s, &sa, NULL) < 0) \ - fatal("Couldn't establish signal handler (%d): %m", s); \ - } while (0) - - sa.sa_mask = mask; - sa.sa_flags = 0; - SIGNAL(SIGHUP, hup); /* Hangup */ - SIGNAL(SIGINT, term); /* Interrupt */ - SIGNAL(SIGTERM, term); /* Terminate */ - SIGNAL(SIGCHLD, chld); - - SIGNAL(SIGUSR1, toggle_debug); /* Toggle debug flag */ - SIGNAL(SIGUSR2, open_ccp); /* Reopen CCP */ - - /* - * Install a handler for other signals which would otherwise - * cause pppd to exit without cleaning up. - */ - SIGNAL(SIGABRT, bad_signal); - SIGNAL(SIGALRM, bad_signal); - SIGNAL(SIGFPE, bad_signal); - SIGNAL(SIGILL, bad_signal); - SIGNAL(SIGPIPE, bad_signal); - SIGNAL(SIGQUIT, bad_signal); - SIGNAL(SIGSEGV, bad_signal); -#ifdef SIGBUS - SIGNAL(SIGBUS, bad_signal); -#endif -#ifdef SIGEMT - SIGNAL(SIGEMT, bad_signal); -#endif -#ifdef SIGPOLL - SIGNAL(SIGPOLL, bad_signal); -#endif -#ifdef SIGPROF - SIGNAL(SIGPROF, bad_signal); -#endif -#ifdef SIGSYS - SIGNAL(SIGSYS, bad_signal); -#endif -#ifdef SIGTRAP - SIGNAL(SIGTRAP, bad_signal); -#endif -#ifdef SIGVTALRM - SIGNAL(SIGVTALRM, bad_signal); -#endif -#ifdef SIGXCPU - SIGNAL(SIGXCPU, bad_signal); -#endif -#ifdef SIGXFSZ - SIGNAL(SIGXFSZ, bad_signal); -#endif - - /* - * Apparently we can get a SIGPIPE when we call syslog, if - * syslogd has died and been restarted. Ignoring it seems - * be sufficient. - */ - signal(SIGPIPE, SIG_IGN); -} - -/* - * set_ifunit - do things we need to do once we know which ppp - * unit we are using. - */ -void -set_ifunit(iskey) - int iskey; -{ - info("Using interface %s%d", PPP_DRV_NAME, ifunit); - slprintf(ifname, sizeof(ifname), "%s%d", PPP_DRV_NAME, ifunit); - script_setenv("IFNAME", ifname, iskey); - if (iskey) { - create_pidfile(); /* write pid to file */ - create_linkpidfile(); - } -} - -/* - * detach - detach us from the controlling terminal. - */ -void -detach() -{ - int pid; - char numbuf[16]; - - if (detached) - return; - if ((pid = fork()) < 0) { - error("Couldn't detach (fork failed: %m)"); - die(1); /* or just return? */ - } - if (pid != 0) { - /* parent */ - notify(pidchange, pid); - exit(0); /* parent dies */ - } - setsid(); - chdir("/"); - close(0); - close(1); - close(2); - detached = 1; - if (log_default) - log_to_fd = -1; - /* update pid files if they have been written already */ - if (pidfilename[0]) - create_pidfile(); - if (linkpidfile[0]) - create_linkpidfile(); - slprintf(numbuf, sizeof(numbuf), "%d", getpid()); - script_setenv("PPPD_PID", numbuf, 1); -} - -/* - * reopen_log - (re)open our connection to syslog. - */ -void -reopen_log() -{ -#ifdef ULTRIX - openlog("pppd", LOG_PID); -#else - openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP); - setlogmask(LOG_UPTO(LOG_INFO)); -#endif -} - -/* - * Create a file containing our process ID. - */ -static void -create_pidfile() -{ - FILE *pidfile; - - slprintf(pidfilename, sizeof(pidfilename), "%s%s.pid", - _PATH_VARRUN, ifname); - if ((pidfile = fopen(pidfilename, "w")) != NULL) { - fprintf(pidfile, "%d\n", getpid()); - (void) fclose(pidfile); - } else { - error("Failed to create pid file %s: %m", pidfilename); - pidfilename[0] = 0; - } -} - -static void -create_linkpidfile() -{ - FILE *pidfile; - - if (linkname[0] == 0) - return; - script_setenv("LINKNAME", linkname, 1); - slprintf(linkpidfile, sizeof(linkpidfile), "%sppp-%s.pid", - _PATH_VARRUN, linkname); - if ((pidfile = fopen(linkpidfile, "w")) != NULL) { - fprintf(pidfile, "%d\n", getpid()); - if (ifname[0]) - fprintf(pidfile, "%s\n", ifname); - (void) fclose(pidfile); - } else { - error("Failed to create pid file %s: %m", linkpidfile); - linkpidfile[0] = 0; - } -} - -/* - * holdoff_end - called via a timeout when the holdoff period ends. - */ -static void -holdoff_end(arg) - void *arg; -{ - new_phase(PHASE_DORMANT); -} - -/* List of protocol names, to make our messages a little more informative. */ -struct protocol_list { - u_short proto; - const char *name; -} protocol_list[] = { - { 0x21, "IP" }, - { 0x23, "OSI Network Layer" }, - { 0x25, "Xerox NS IDP" }, - { 0x27, "DECnet Phase IV" }, - { 0x29, "Appletalk" }, - { 0x2b, "Novell IPX" }, - { 0x2d, "VJ compressed TCP/IP" }, - { 0x2f, "VJ uncompressed TCP/IP" }, - { 0x31, "Bridging PDU" }, - { 0x33, "Stream Protocol ST-II" }, - { 0x35, "Banyan Vines" }, - { 0x39, "AppleTalk EDDP" }, - { 0x3b, "AppleTalk SmartBuffered" }, - { 0x3d, "Multi-Link" }, - { 0x3f, "NETBIOS Framing" }, - { 0x41, "Cisco Systems" }, - { 0x43, "Ascom Timeplex" }, - { 0x45, "Fujitsu Link Backup and Load Balancing (LBLB)" }, - { 0x47, "DCA Remote Lan" }, - { 0x49, "Serial Data Transport Protocol (PPP-SDTP)" }, - { 0x4b, "SNA over 802.2" }, - { 0x4d, "SNA" }, - { 0x4f, "IP6 Header Compression" }, - { 0x6f, "Stampede Bridging" }, - { 0xfb, "single-link compression" }, - { 0xfd, "1st choice compression" }, - { 0x0201, "802.1d Hello Packets" }, - { 0x0203, "IBM Source Routing BPDU" }, - { 0x0205, "DEC LANBridge100 Spanning Tree" }, - { 0x0231, "Luxcom" }, - { 0x0233, "Sigma Network Systems" }, - { 0x8021, "Internet Protocol Control Protocol" }, - { 0x8023, "OSI Network Layer Control Protocol" }, - { 0x8025, "Xerox NS IDP Control Protocol" }, - { 0x8027, "DECnet Phase IV Control Protocol" }, - { 0x8029, "Appletalk Control Protocol" }, - { 0x802b, "Novell IPX Control Protocol" }, - { 0x8031, "Bridging NCP" }, - { 0x8033, "Stream Protocol Control Protocol" }, - { 0x8035, "Banyan Vines Control Protocol" }, - { 0x803d, "Multi-Link Control Protocol" }, - { 0x803f, "NETBIOS Framing Control Protocol" }, - { 0x8041, "Cisco Systems Control Protocol" }, - { 0x8043, "Ascom Timeplex" }, - { 0x8045, "Fujitsu LBLB Control Protocol" }, - { 0x8047, "DCA Remote Lan Network Control Protocol (RLNCP)" }, - { 0x8049, "Serial Data Control Protocol (PPP-SDCP)" }, - { 0x804b, "SNA over 802.2 Control Protocol" }, - { 0x804d, "SNA Control Protocol" }, - { 0x804f, "IP6 Header Compression Control Protocol" }, - { 0x006f, "Stampede Bridging Control Protocol" }, - { 0x80fb, "Single Link Compression Control Protocol" }, - { 0x80fd, "Compression Control Protocol" }, - { 0xc021, "Link Control Protocol" }, - { 0xc023, "Password Authentication Protocol" }, - { 0xc025, "Link Quality Report" }, - { 0xc027, "Shiva Password Authentication Protocol" }, - { 0xc029, "CallBack Control Protocol (CBCP)" }, - { 0xc081, "Container Control Protocol" }, - { 0xc223, "Challenge Handshake Authentication Protocol" }, - { 0xc281, "Proprietary Authentication Protocol" }, - { 0, NULL }, -}; - -/* - * protocol_name - find a name for a PPP protocol. - */ -const char * -protocol_name(proto) - int proto; -{ - struct protocol_list *lp; - - for (lp = protocol_list; lp->proto != 0; ++lp) - if (proto == lp->proto) - return lp->name; - return NULL; -} - -/* - * get_input - called when incoming data is available. - */ -static void -get_input() -{ - int len, i; - u_char *p; - u_short protocol; - struct protent *protp; - - p = inpacket_buf; /* point to beginning of packet buffer */ - - len = read_packet(inpacket_buf); - if (len < 0) - return; - - if (len == 0) { - notice("Modem hangup"); - hungup = 1; - status = EXIT_HANGUP; - lcp_lowerdown(0); /* serial link is no longer available */ - link_terminated(0); - return; - } - - if (debug /*&& (debugflags & DBG_INPACKET)*/) - dbglog("rcvd %P", p, len); - - if (len < PPP_HDRLEN) { - MAINDEBUG(("io(): Received short packet.")); - return; - } - - p += 2; /* Skip address and control */ - GETSHORT(protocol, p); - len -= PPP_HDRLEN; - - /* - * Toss all non-LCP packets unless LCP is OPEN. - */ - if (protocol != PPP_LCP && lcp_fsm[0].state != OPENED) { - MAINDEBUG(("get_input: Received non-LCP packet when LCP not open.")); - return; - } - - /* - * Until we get past the authentication phase, toss all packets - * except LCP, LQR and authentication packets. - */ - if (phase <= PHASE_AUTHENTICATE - && !(protocol == PPP_LCP || protocol == PPP_LQR - || protocol == PPP_PAP || protocol == PPP_CHAP)) { - MAINDEBUG(("get_input: discarding proto 0x%x in phase %d", - protocol, phase)); - return; - } - - /* - * Upcall the proper protocol input routine. - */ - for (i = 0; (protp = protocols[i]) != NULL; ++i) { - if (protp->protocol == protocol && protp->enabled_flag) { - (*protp->input)(0, p, len); - return; - } - if (protocol == (protp->protocol & ~0x8000) && protp->enabled_flag - && protp->datainput != NULL) { - (*protp->datainput)(0, p, len); - return; - } - } - - if (debug) { - const char *pname = protocol_name(protocol); - if (pname != NULL) - warn("Unsupported protocol '%s' (0x%x) received", pname, protocol); - else - warn("Unsupported protocol 0x%x received", protocol); - } - lcp_sprotrej(0, p - PPP_HDRLEN, len + PPP_HDRLEN); -} - -/* - * new_phase - signal the start of a new phase of pppd's operation. - */ -void -new_phase(p) - int p; -{ - phase = p; - if (new_phase_hook) - (*new_phase_hook)(p); - notify(phasechange, p); -} - -/* - * die - clean up state and exit with the specified status. - */ -void -die(status) - int status; -{ - cleanup(); - notify(exitnotify, status); - syslog(LOG_INFO, "Exit."); - exit(status); -} - -/* - * cleanup - restore anything which needs to be restored before we exit - */ -/* ARGSUSED */ -static void -cleanup() -{ - sys_cleanup(); - - if (fd_ppp >= 0) - the_channel->disestablish_ppp(devfd); - if (the_channel->cleanup) - (*the_channel->cleanup)(); - - if (pidfilename[0] != 0 && unlink(pidfilename) < 0 && errno != ENOENT) - warn("unable to delete pid file %s: %m", pidfilename); - pidfilename[0] = 0; - if (linkpidfile[0] != 0 && unlink(linkpidfile) < 0 && errno != ENOENT) - warn("unable to delete pid file %s: %m", linkpidfile); - linkpidfile[0] = 0; - - if (pppdb != NULL) - cleanup_db(); -} - -/* - * update_link_stats - get stats at link termination. - */ -void -update_link_stats(u) - int u; -{ - struct timeval now; - char numbuf[32]; - - if (!get_ppp_stats(u, &link_stats) - || gettimeofday(&now, NULL) < 0) - return; - link_connect_time = now.tv_sec - start_time.tv_sec; - link_stats_valid = 1; - - slprintf(numbuf, sizeof(numbuf), "%d", link_connect_time); - script_setenv("CONNECT_TIME", numbuf, 0); - slprintf(numbuf, sizeof(numbuf), "%d", link_stats.bytes_out); - script_setenv("BYTES_SENT", numbuf, 0); - slprintf(numbuf, sizeof(numbuf), "%d", link_stats.bytes_in); - script_setenv("BYTES_RCVD", numbuf, 0); -} - - -struct callout { - struct timeval c_time; /* time at which to call routine */ - void *c_arg; /* argument to routine */ - void (*c_func) __P((void *)); /* routine */ - struct callout *c_next; -}; - -static struct callout *callout = NULL; /* Callout list */ -static struct timeval timenow; /* Current time */ - -/* - * timeout - Schedule a timeout. - * - * Note that this timeout takes the number of milliseconds, NOT hz (as in - * the kernel). - */ -void -timeout(func, arg, secs, usecs) - void (*func) __P((void *)); - void *arg; - int secs, usecs; -{ - struct callout *newp, *p, **pp; - - MAINDEBUG(("Timeout %p:%p in %d.%03d seconds.", func, arg, - time / 1000, time % 1000)); - - /* - * Allocate timeout. - */ - if ((newp = (struct callout *) malloc(sizeof(struct callout))) == NULL) - fatal("Out of memory in timeout()!"); - newp->c_arg = arg; - newp->c_func = func; - gettimeofday(&timenow, NULL); - newp->c_time.tv_sec = timenow.tv_sec + secs; - newp->c_time.tv_usec = timenow.tv_usec + usecs; - if (newp->c_time.tv_usec >= 1000000) { - newp->c_time.tv_sec += newp->c_time.tv_usec / 1000000; - newp->c_time.tv_usec %= 1000000; - } - - /* - * Find correct place and link it in. - */ - for (pp = &callout; (p = *pp); pp = &p->c_next) - if (newp->c_time.tv_sec < p->c_time.tv_sec - || (newp->c_time.tv_sec == p->c_time.tv_sec - && newp->c_time.tv_usec < p->c_time.tv_usec)) - break; - newp->c_next = p; - *pp = newp; -} - - -/* - * untimeout - Unschedule a timeout. - */ -void -untimeout(func, arg) - void (*func) __P((void *)); - void *arg; -{ - struct callout **copp, *freep; - - MAINDEBUG(("Untimeout %p:%p.", func, arg)); - - /* - * Find first matching timeout and remove it from the list. - */ - for (copp = &callout; (freep = *copp); copp = &freep->c_next) - if (freep->c_func == func && freep->c_arg == arg) { - *copp = freep->c_next; - free((char *) freep); - break; - } -} - - -/* - * calltimeout - Call any timeout routines which are now due. - */ -static void -calltimeout() -{ - struct callout *p; - - while (callout != NULL) { - p = callout; - - if (gettimeofday(&timenow, NULL) < 0) - fatal("Failed to get time of day: %m"); - if (!(p->c_time.tv_sec < timenow.tv_sec - || (p->c_time.tv_sec == timenow.tv_sec - && p->c_time.tv_usec <= timenow.tv_usec))) - break; /* no, it's not time yet */ - - callout = p->c_next; - (*p->c_func)(p->c_arg); - - free((char *) p); - } -} - - -/* - * timeleft - return the length of time until the next timeout is due. - */ -static struct timeval * -timeleft(tvp) - struct timeval *tvp; -{ - if (callout == NULL) - return NULL; - - gettimeofday(&timenow, NULL); - tvp->tv_sec = callout->c_time.tv_sec - timenow.tv_sec; - tvp->tv_usec = callout->c_time.tv_usec - timenow.tv_usec; - if (tvp->tv_usec < 0) { - tvp->tv_usec += 1000000; - tvp->tv_sec -= 1; - } - if (tvp->tv_sec < 0) - tvp->tv_sec = tvp->tv_usec = 0; - - return tvp; -} - - -/* - * kill_my_pg - send a signal to our process group, and ignore it ourselves. - */ -static void -kill_my_pg(sig) - int sig; -{ - struct sigaction act, oldact; - - act.sa_handler = SIG_IGN; - act.sa_flags = 0; - kill(0, sig); - sigaction(sig, &act, &oldact); - sigaction(sig, &oldact, NULL); -} - - -/* - * hup - Catch SIGHUP signal. - * - * Indicates that the physical layer has been disconnected. - * We don't rely on this indication; if the user has sent this - * signal, we just take the link down. - */ -static void -hup(sig) - int sig; -{ - info("Hangup (SIGHUP)"); - got_sighup = 1; - if (conn_running) - /* Send the signal to the [dis]connector process(es) also */ - kill_my_pg(sig); - notify(sigreceived, sig); - if (waiting) - siglongjmp(sigjmp, 1); -} - - -/* - * term - Catch SIGTERM signal and SIGINT signal (^C/del). - * - * Indicates that we should initiate a graceful disconnect and exit. - */ -/*ARGSUSED*/ -static void -term(sig) - int sig; -{ - info("Terminating on signal %d.", sig); - got_sigterm = 1; - if (conn_running) - /* Send the signal to the [dis]connector process(es) also */ - kill_my_pg(sig); - notify(sigreceived, sig); - if (waiting) - siglongjmp(sigjmp, 1); -} - - -/* - * chld - Catch SIGCHLD signal. - * Sets a flag so we will call reap_kids in the mainline. - */ -static void -chld(sig) - int sig; -{ - got_sigchld = 1; - if (waiting) - siglongjmp(sigjmp, 1); -} - - -/* - * toggle_debug - Catch SIGUSR1 signal. - * - * Toggle debug flag. - */ -/*ARGSUSED*/ -static void -toggle_debug(sig) - int sig; -{ - debug = !debug; - if (debug) { - setlogmask(LOG_UPTO(LOG_DEBUG)); - } else { - setlogmask(LOG_UPTO(LOG_WARNING)); - } -} - - -/* - * open_ccp - Catch SIGUSR2 signal. - * - * Try to (re)negotiate compression. - */ -/*ARGSUSED*/ -static void -open_ccp(sig) - int sig; -{ - got_sigusr2 = 1; - if (waiting) - siglongjmp(sigjmp, 1); -} - - -/* - * bad_signal - We've caught a fatal signal. Clean up state and exit. - */ -static void -bad_signal(sig) - int sig; -{ - static int crashed = 0; - - if (crashed) - _exit(127); - crashed = 1; - error("Fatal signal %d", sig); - if (conn_running) - kill_my_pg(SIGTERM); - notify(sigreceived, sig); - die(127); -} - - -/* - * device_script - run a program to talk to the specified fds - * (e.g. to run the connector or disconnector script). - * stderr gets connected to the log fd or to the _PATH_CONNERRS file. - */ -int -device_script(program, in, out, dont_wait) - char *program; - int in, out; - int dont_wait; -{ - int pid, fd; - int status = -1; - int errfd; - - ++conn_running; - pid = fork(); - - if (pid < 0) { - --conn_running; - error("Failed to create child process: %m"); - return -1; - } - - if (pid != 0) { - if (dont_wait) { - record_child(pid, program, NULL, NULL); - status = 0; - } else { - while (waitpid(pid, &status, 0) < 0) { - if (errno == EINTR) - continue; - fatal("error waiting for (dis)connection process: %m"); - } - --conn_running; - } - return (status == 0 ? 0 : -1); - } - - /* here we are executing in the child */ - /* make sure fds 0, 1, 2 are occupied */ - while ((fd = dup(in)) >= 0) { - if (fd > 2) { - close(fd); - break; - } - } - - /* dup in and out to fds > 2 */ - in = dup(in); - out = dup(out); - if (log_to_fd >= 0) { - errfd = dup(log_to_fd); - } else { - errfd = open(_PATH_CONNERRS, O_WRONLY | O_APPEND | O_CREAT, 0600); - } - - /* close fds 0 - 2 and any others we can think of */ - close(0); - close(1); - close(2); - sys_close(); - if (the_channel->close) - (*the_channel->close)(); - closelog(); - - /* dup the in, out, err fds to 0, 1, 2 */ - dup2(in, 0); - close(in); - dup2(out, 1); - close(out); - if (errfd >= 0) { - dup2(errfd, 2); - close(errfd); - } - - setuid(uid); - if (getuid() != uid) { - error("setuid failed"); - exit(1); - } - setgid(getgid()); - { - int argc = 0; - char * argv[500]; - char * ptr = program; - while (ptr != NULL) { - argv[argc] = ptr; - argc++; - ptr = strchr(ptr, ' '); - if (ptr) { - ptr[0] = '\0'; - ptr++; - } - } - argv[argc] = NULL; - execv(argv[0], argv); - error("could not exec %s: %m", program); - exit(99); - } - /* NOTREACHED */ -} - - -/* - * run-program - execute a program with given arguments, - * but don't wait for it. - * If the program can't be executed, logs an error unless - * must_exist is 0 and the program file doesn't exist. - * Returns -1 if it couldn't fork, 0 if the file doesn't exist - * or isn't an executable plain file, or the process ID of the child. - * If done != NULL, (*done)(arg) will be called later (within - * reap_kids) iff the return value is > 0. - */ -pid_t -run_program(prog, args, must_exist, done, arg) - char *prog; - char **args; - int must_exist; - void (*done) __P((void *)); - void *arg; -{ - int pid; - struct stat sbuf; - - /* - * First check if the file exists and is executable. - * We don't use access() because that would use the - * real user-id, which might not be root, and the script - * might be accessible only to root. - */ - errno = EINVAL; - if (stat(prog, &sbuf) < 0 || !S_ISREG(sbuf.st_mode) - || (sbuf.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)) == 0) { - if (must_exist || errno != ENOENT) - warn("Can't execute %s: %m", prog); - return 0; - } - - pid = fork(); - if (pid == -1) { - error("Failed to create child process for %s: %m", prog); - return -1; - } - if (pid == 0) { - int new_fd; - - /* Leave the current location */ - (void) setsid(); /* No controlling tty. */ - (void) umask (S_IRWXG|S_IRWXO); - (void) chdir ("/"); /* no current directory. */ - setuid(0); /* set real UID = root */ - setgid(getegid()); - - /* Ensure that nothing of our device environment is inherited. */ - sys_close(); - closelog(); - close (0); - close (1); - close (2); - if (the_channel->close) - (*the_channel->close)(); - - /* Don't pass handles to the PPP device, even by accident. */ - new_fd = open (_PATH_DEVNULL, O_RDWR); - if (new_fd >= 0) { - if (new_fd != 0) { - dup2 (new_fd, 0); /* stdin <- /dev/null */ - close (new_fd); - } - dup2 (0, 1); /* stdout -> /dev/null */ - dup2 (0, 2); /* stderr -> /dev/null */ - } - -#ifdef BSD - /* Force the priority back to zero if pppd is running higher. */ - if (setpriority (PRIO_PROCESS, 0, 0) < 0) - warn("can't reset priority to 0: %m"); -#endif - - /* SysV recommends a second fork at this point. */ - - /* run the program */ - execve(prog, args, script_env); - if (must_exist || errno != ENOENT) { - /* have to reopen the log, there's nowhere else - for the message to go. */ - reopen_log(); - syslog(LOG_ERR, "Can't execute %s: %m", prog); - closelog(); - } - _exit(-1); - } - - if (debug) - dbglog("Script %s started (pid %d)", prog, pid); - record_child(pid, prog, done, arg); - - return pid; -} - - -/* - * record_child - add a child process to the list for reap_kids - * to use. - */ -void -record_child(pid, prog, done, arg) - int pid; - char *prog; - void (*done) __P((void *)); - void *arg; -{ - struct subprocess *chp; - - ++n_children; - - chp = (struct subprocess *) malloc(sizeof(struct subprocess)); - if (chp == NULL) { - warn("losing track of %s process", prog); - } else { - chp->pid = pid; - chp->prog = prog; - chp->done = done; - chp->arg = arg; - chp->next = children; - children = chp; - } -} - - -/* - * reap_kids - get status from any dead child processes, - * and log a message for abnormal terminations. - */ -static int -reap_kids(waitfor) - int waitfor; -{ - int pid, status; - struct subprocess *chp, **prevp; - - if (n_children == 0) - return 0; - while ((pid = waitpid(-1, &status, (waitfor? 0: WNOHANG))) != -1 - && pid != 0) { - for (prevp = &children; (chp = *prevp) != NULL; prevp = &chp->next) { - if (chp->pid == pid) { - --n_children; - *prevp = chp->next; - break; - } - } - if (WIFSIGNALED(status)) { - warn("Child process %s (pid %d) terminated with signal %d", - (chp? chp->prog: "??"), pid, WTERMSIG(status)); - } else if (debug) - dbglog("Script %s finished (pid %d), status = 0x%x", - (chp? chp->prog: "??"), pid, status); - if (chp && chp->done) - (*chp->done)(chp->arg); - if (chp) - free(chp); - } - if (pid == -1) { - if (errno == ECHILD) - return -1; - if (errno != EINTR) - error("Error waiting for child process: %m"); - } - return 0; -} - -/* - * add_notifier - add a new function to be called when something happens. - */ -void -add_notifier(notif, func, arg) - struct notifier **notif; - notify_func func; - void *arg; -{ - struct notifier *np; - - np = malloc(sizeof(struct notifier)); - if (np == 0) - novm("notifier struct"); - np->next = *notif; - np->func = func; - np->arg = arg; - *notif = np; -} - -/* - * remove_notifier - remove a function from the list of things to - * be called when something happens. - */ -void -remove_notifier(notif, func, arg) - struct notifier **notif; - notify_func func; - void *arg; -{ - struct notifier *np; - - for (; (np = *notif) != 0; notif = &np->next) { - if (np->func == func && np->arg == arg) { - *notif = np->next; - free(np); - break; - } - } -} - -/* - * notify - call a set of functions registered with add_notify. - */ -void -notify(notif, val) - struct notifier *notif; - int val; -{ - struct notifier *np; - - while ((np = notif) != 0) { - notif = np->next; - (*np->func)(np->arg, val); - } -} - -/* - * novm - log an error message saying we ran out of memory, and die. - */ -void -novm(msg) - char *msg; -{ - fatal("Virtual memory exhausted allocating %s\n", msg); -} - -/* - * script_setenv - set an environment variable value to be used - * for scripts that we run (e.g. ip-up, auth-up, etc.) - */ -void -script_setenv(var, value, iskey) - char *var, *value; - int iskey; -{ - size_t varl = strlen(var); - size_t vl = varl + strlen(value) + 2; - int i; - char *p, *newstring; - - newstring = (char *) malloc(vl+1); - if (newstring == 0) - return; - *newstring++ = iskey; - slprintf(newstring, vl, "%s=%s", var, value); - - /* check if this variable is already set */ - if (script_env != 0) { - for (i = 0; (p = script_env[i]) != 0; ++i) { - if (strncmp(p, var, varl) == 0 && p[varl] == '=') { - if (p[-1] && pppdb != NULL) - delete_db_key(p); - free(p-1); - script_env[i] = newstring; - if (iskey && pppdb != NULL) - add_db_key(newstring); - update_db_entry(); - return; - } - } - } else { - /* no space allocated for script env. ptrs. yet */ - i = 0; - script_env = (char **) malloc(16 * sizeof(char *)); - if (script_env == 0) - return; - s_env_nalloc = 16; - } - - /* reallocate script_env with more space if needed */ - if (i + 1 >= s_env_nalloc) { - int new_n = i + 17; - char **newenv = (char **) realloc((void *)script_env, - new_n * sizeof(char *)); - if (newenv == 0) - return; - script_env = newenv; - s_env_nalloc = new_n; - } - - script_env[i] = newstring; - script_env[i+1] = 0; - - if (pppdb != NULL) { - if (iskey) - add_db_key(newstring); - update_db_entry(); - } -} - -/* - * script_unsetenv - remove a variable from the environment - * for scripts. - */ -void -script_unsetenv(var) - char *var; -{ - int vl = strlen(var); - int i; - char *p; - - if (script_env == 0) - return; - for (i = 0; (p = script_env[i]) != 0; ++i) { - if (strncmp(p, var, vl) == 0 && p[vl] == '=') { - if (p[-1] && pppdb != NULL) - delete_db_key(p); - free(p-1); - while ((script_env[i] = script_env[i+1]) != 0) - ++i; - break; - } - } - if (pppdb != NULL) - update_db_entry(); -} - -/* - * update_db_entry - update our entry in the database. - */ -static void -update_db_entry() -{ - TDB_DATA key, dbuf; - int vlen, i; - char *p, *q, *vbuf; - - if (script_env == NULL) - return; - vlen = 0; - for (i = 0; (p = script_env[i]) != 0; ++i) - vlen += strlen(p) + 1; - vbuf = malloc(vlen); - if (vbuf == 0) - novm("database entry"); - q = vbuf; - for (i = 0; (p = script_env[i]) != 0; ++i) - q += slprintf(q, vbuf + vlen - q, "%s;", p); - - key.dptr = db_key; - key.dsize = strlen(db_key); - dbuf.dptr = vbuf; - dbuf.dsize = vlen; - if (tdb_store(pppdb, key, dbuf, TDB_REPLACE)) - error("tdb_store failed: %s", tdb_error(pppdb)); - -} - -/* - * add_db_key - add a key that we can use to look up our database entry. - */ -static void -add_db_key(str) - const char *str; -{ - TDB_DATA key, dbuf; - - key.dptr = (char *) str; - key.dsize = strlen(str); - dbuf.dptr = db_key; - dbuf.dsize = strlen(db_key); - if (tdb_store(pppdb, key, dbuf, TDB_REPLACE)) - error("tdb_store key failed: %s", tdb_error(pppdb)); -} - -/* - * delete_db_key - delete a key for looking up our database entry. - */ -static void -delete_db_key(str) - const char *str; -{ - TDB_DATA key; - - key.dptr = (char *) str; - key.dsize = strlen(str); - tdb_delete(pppdb, key); -} - -/* - * cleanup_db - delete all the entries we put in the database. - */ -static void -cleanup_db() -{ - TDB_DATA key; - int i; - char *p; - - key.dptr = db_key; - key.dsize = strlen(db_key); - tdb_delete(pppdb, key); - for (i = 0; (p = script_env[i]) != 0; ++i) - if (p[-1]) - delete_db_key(p); -} diff --git a/mdk-stage1/ppp/pppd/md4.c b/mdk-stage1/ppp/pppd/md4.c deleted file mode 100644 index cda9f943d..000000000 --- a/mdk-stage1/ppp/pppd/md4.c +++ /dev/null @@ -1,298 +0,0 @@ -/* -** ******************************************************************** -** md4.c -- Implementation of MD4 Message Digest Algorithm ** -** Updated: 2/16/90 by Ronald L. Rivest ** -** (C) 1990 RSA Data Security, Inc. ** -** ******************************************************************** -*/ - -/* -** To use MD4: -** -- Include md4.h in your program -** -- Declare an MDstruct MD to hold the state of the digest -** computation. -** -- Initialize MD using MDbegin(&MD) -** -- For each full block (64 bytes) X you wish to process, call -** MD4Update(&MD,X,512) -** (512 is the number of bits in a full block.) -** -- For the last block (less than 64 bytes) you wish to process, -** MD4Update(&MD,X,n) -** where n is the number of bits in the partial block. A partial -** block terminates the computation, so every MD computation -** should terminate by processing a partial block, even if it -** has n = 0. -** -- The message digest is available in MD.buffer[0] ... -** MD.buffer[3]. (Least-significant byte of each word -** should be output first.) -** -- You can print out the digest using MDprint(&MD) -*/ - -/* Implementation notes: -** This implementation assumes that ints are 32-bit quantities. -*/ - -#define TRUE 1 -#define FALSE 0 - -/* Compile-time includes -*/ -#include <stdio.h> -#include "md4.h" -#include "pppd.h" - -/* Compile-time declarations of MD4 "magic constants". -*/ -#define I0 0x67452301 /* Initial values for MD buffer */ -#define I1 0xefcdab89 -#define I2 0x98badcfe -#define I3 0x10325476 -#define C2 013240474631 /* round 2 constant = sqrt(2) in octal */ -#define C3 015666365641 /* round 3 constant = sqrt(3) in octal */ -/* C2 and C3 are from Knuth, The Art of Programming, Volume 2 -** (Seminumerical Algorithms), Second Edition (1981), Addison-Wesley. -** Table 2, page 660. -*/ - -#define fs1 3 /* round 1 shift amounts */ -#define fs2 7 -#define fs3 11 -#define fs4 19 -#define gs1 3 /* round 2 shift amounts */ -#define gs2 5 -#define gs3 9 -#define gs4 13 -#define hs1 3 /* round 3 shift amounts */ -#define hs2 9 -#define hs3 11 -#define hs4 15 - -/* Compile-time macro declarations for MD4. -** Note: The "rot" operator uses the variable "tmp". -** It assumes tmp is declared as unsigned int, so that the >> -** operator will shift in zeros rather than extending the sign bit. -*/ -#define f(X,Y,Z) ((X&Y) | ((~X)&Z)) -#define g(X,Y,Z) ((X&Y) | (X&Z) | (Y&Z)) -#define h(X,Y,Z) (X^Y^Z) -#define rot(X,S) (tmp=X,(tmp<<S) | (tmp>>(32-S))) -#define ff(A,B,C,D,i,s) A = rot((A + f(B,C,D) + X[i]),s) -#define gg(A,B,C,D,i,s) A = rot((A + g(B,C,D) + X[i] + C2),s) -#define hh(A,B,C,D,i,s) A = rot((A + h(B,C,D) + X[i] + C3),s) - -/* MD4print(MDp) -** Print message digest buffer MDp as 32 hexadecimal digits. -** Order is from low-order byte of buffer[0] to high-order byte of -** buffer[3]. -** Each byte is printed with high-order hexadecimal digit first. -** This is a user-callable routine. -*/ -void -MD4Print(MDp) -MD4_CTX *MDp; -{ - int i,j; - for (i=0;i<4;i++) - for (j=0;j<32;j=j+8) - printf("%02x",(MDp->buffer[i]>>j) & 0xFF); -} - -/* MD4Init(MDp) -** Initialize message digest buffer MDp. -** This is a user-callable routine. -*/ -void -MD4Init(MDp) -MD4_CTX *MDp; -{ - int i; - MDp->buffer[0] = I0; - MDp->buffer[1] = I1; - MDp->buffer[2] = I2; - MDp->buffer[3] = I3; - for (i=0;i<8;i++) MDp->count[i] = 0; - MDp->done = 0; -} - -/* MDblock(MDp,X) -** Update message digest buffer MDp->buffer using 16-word data block X. -** Assumes all 16 words of X are full of data. -** Does not update MDp->count. -** This routine is not user-callable. -*/ -static void -MDblock(MDp,Xb) -MD4_CTX *MDp; -unsigned char *Xb; -{ - register unsigned int tmp, A, B, C, D; - unsigned int X[16]; - int i; - - for (i = 0; i < 16; ++i) { - X[i] = Xb[0] + (Xb[1] << 8) + (Xb[2] << 16) + (Xb[3] << 24); - Xb += 4; - } - - A = MDp->buffer[0]; - B = MDp->buffer[1]; - C = MDp->buffer[2]; - D = MDp->buffer[3]; - /* Update the message digest buffer */ - ff(A , B , C , D , 0 , fs1); /* Round 1 */ - ff(D , A , B , C , 1 , fs2); - ff(C , D , A , B , 2 , fs3); - ff(B , C , D , A , 3 , fs4); - ff(A , B , C , D , 4 , fs1); - ff(D , A , B , C , 5 , fs2); - ff(C , D , A , B , 6 , fs3); - ff(B , C , D , A , 7 , fs4); - ff(A , B , C , D , 8 , fs1); - ff(D , A , B , C , 9 , fs2); - ff(C , D , A , B , 10 , fs3); - ff(B , C , D , A , 11 , fs4); - ff(A , B , C , D , 12 , fs1); - ff(D , A , B , C , 13 , fs2); - ff(C , D , A , B , 14 , fs3); - ff(B , C , D , A , 15 , fs4); - gg(A , B , C , D , 0 , gs1); /* Round 2 */ - gg(D , A , B , C , 4 , gs2); - gg(C , D , A , B , 8 , gs3); - gg(B , C , D , A , 12 , gs4); - gg(A , B , C , D , 1 , gs1); - gg(D , A , B , C , 5 , gs2); - gg(C , D , A , B , 9 , gs3); - gg(B , C , D , A , 13 , gs4); - gg(A , B , C , D , 2 , gs1); - gg(D , A , B , C , 6 , gs2); - gg(C , D , A , B , 10 , gs3); - gg(B , C , D , A , 14 , gs4); - gg(A , B , C , D , 3 , gs1); - gg(D , A , B , C , 7 , gs2); - gg(C , D , A , B , 11 , gs3); - gg(B , C , D , A , 15 , gs4); - hh(A , B , C , D , 0 , hs1); /* Round 3 */ - hh(D , A , B , C , 8 , hs2); - hh(C , D , A , B , 4 , hs3); - hh(B , C , D , A , 12 , hs4); - hh(A , B , C , D , 2 , hs1); - hh(D , A , B , C , 10 , hs2); - hh(C , D , A , B , 6 , hs3); - hh(B , C , D , A , 14 , hs4); - hh(A , B , C , D , 1 , hs1); - hh(D , A , B , C , 9 , hs2); - hh(C , D , A , B , 5 , hs3); - hh(B , C , D , A , 13 , hs4); - hh(A , B , C , D , 3 , hs1); - hh(D , A , B , C , 11 , hs2); - hh(C , D , A , B , 7 , hs3); - hh(B , C , D , A , 15 , hs4); - MDp->buffer[0] += A; - MDp->buffer[1] += B; - MDp->buffer[2] += C; - MDp->buffer[3] += D; -} - -/* MD4Update(MDp,X,count) -** Input: X -- a pointer to an array of unsigned characters. -** count -- the number of bits of X to use. -** (if not a multiple of 8, uses high bits of last byte.) -** Update MDp using the number of bits of X given by count. -** This is the basic input routine for an MD4 user. -** The routine completes the MD computation when count < 512, so -** every MD computation should end with one call to MD4Update with a -** count less than 512. A call with count 0 will be ignored if the -** MD has already been terminated (done != 0), so an extra call with -** count 0 can be given as a "courtesy close" to force termination -** if desired. -*/ -void -MD4Update(MDp,X,count) -MD4_CTX *MDp; -unsigned char *X; -unsigned int count; -{ - unsigned int i, tmp, bit, byte, mask; - unsigned char XX[64]; - unsigned char *p; - - /* return with no error if this is a courtesy close with count - ** zero and MDp->done is true. - */ - if (count == 0 && MDp->done) return; - /* check to see if MD is already done and report error */ - if (MDp->done) - { printf("\nError: MD4Update MD already done."); return; } - - /* Add count to MDp->count */ - tmp = count; - p = MDp->count; - while (tmp) - { tmp += *p; - *p++ = tmp; - tmp = tmp >> 8; - } - - /* Process data */ - if (count == 512) - { /* Full block of data to handle */ - MDblock(MDp,X); - } - else if (count > 512) /* Check for count too large */ - { - printf("\nError: MD4Update called with illegal count value %d.", - count); - return; - } - else /* partial block -- must be last block so finish up */ - { - /* Find out how many bytes and residual bits there are */ - byte = count >> 3; - bit = count & 7; - /* Copy X into XX since we need to modify it */ - for (i=0;i<=byte;i++) XX[i] = X[i]; - for (i=byte+1;i<64;i++) XX[i] = 0; - /* Add padding '1' bit and low-order zeros in last byte */ - mask = 1 << (7 - bit); - XX[byte] = (XX[byte] | mask) & ~( mask - 1); - /* If room for bit count, finish up with this block */ - if (byte <= 55) - { - for (i=0;i<8;i++) XX[56+i] = MDp->count[i]; - MDblock(MDp,XX); - } - else /* need to do two blocks to finish up */ - { - MDblock(MDp,XX); - for (i=0;i<56;i++) XX[i] = 0; - for (i=0;i<8;i++) XX[56+i] = MDp->count[i]; - MDblock(MDp,XX); - } - /* Set flag saying we're done with MD computation */ - MDp->done = 1; - } -} - -/* -** Finish up MD4 computation and return message digest. -*/ -void -MD4Final(buf, MD) -unsigned char *buf; -MD4_CTX *MD; -{ - int i, j; - unsigned int w; - - MD4Update(MD, NULL, 0); - for (i = 0; i < 4; ++i) { - w = MD->buffer[i]; - for (j = 0; j < 4; ++j) { - *buf++ = w; - w >>= 8; - } - } -} - -/* -** End of md4.c -****************************(cut)***********************************/ diff --git a/mdk-stage1/ppp/pppd/md4.h b/mdk-stage1/ppp/pppd/md4.h deleted file mode 100644 index 80e8f9a2a..000000000 --- a/mdk-stage1/ppp/pppd/md4.h +++ /dev/null @@ -1,64 +0,0 @@ - -/* -** ******************************************************************** -** md4.h -- Header file for implementation of ** -** MD4 Message Digest Algorithm ** -** Updated: 2/13/90 by Ronald L. Rivest ** -** (C) 1990 RSA Data Security, Inc. ** -** ******************************************************************** -*/ - -#ifndef __P -# if defined(__STDC__) || defined(__GNUC__) -# define __P(x) x -# else -# define __P(x) () -# endif -#endif - - -/* MDstruct is the data structure for a message digest computation. -*/ -typedef struct { - unsigned int buffer[4]; /* Holds 4-word result of MD computation */ - unsigned char count[8]; /* Number of bits processed so far */ - unsigned int done; /* Nonzero means MD computation finished */ -} MD4_CTX; - -/* MD4Init(MD4_CTX *) -** Initialize the MD4_CTX prepatory to doing a message digest -** computation. -*/ -extern void MD4Init __P((MD4_CTX *MD)); - -/* MD4Update(MD,X,count) -** Input: X -- a pointer to an array of unsigned characters. -** count -- the number of bits of X to use (an unsigned int). -** Updates MD using the first "count" bits of X. -** The array pointed to by X is not modified. -** If count is not a multiple of 8, MD4Update uses high bits of -** last byte. -** This is the basic input routine for a user. -** The routine terminates the MD computation when count < 512, so -** every MD computation should end with one call to MD4Update with a -** count less than 512. Zero is OK for a count. -*/ -extern void MD4Update __P((MD4_CTX *MD, unsigned char *X, unsigned int count)); - -/* MD4Print(MD) -** Prints message digest buffer MD as 32 hexadecimal digits. -** Order is from low-order byte of buffer[0] to high-order byte -** of buffer[3]. -** Each byte is printed with high-order hexadecimal digit first. -*/ -extern void MD4Print __P((MD4_CTX *)); - -/* MD4Final(buf, MD) -** Returns message digest from MD and terminates the message -** digest computation. -*/ -extern void MD4Final __P((unsigned char *, MD4_CTX *)); - -/* -** End of md4.h -****************************(cut)***********************************/ diff --git a/mdk-stage1/ppp/pppd/md5.c b/mdk-stage1/ppp/pppd/md5.c deleted file mode 100644 index 0b8de3aae..000000000 --- a/mdk-stage1/ppp/pppd/md5.c +++ /dev/null @@ -1,309 +0,0 @@ - - -/* - *********************************************************************** - ** md5.c -- the source code for MD5 routines ** - ** RSA Data Security, Inc. MD5 Message-Digest Algorithm ** - ** Created: 2/17/90 RLR ** - ** Revised: 1/91 SRD,AJ,BSK,JT Reference C ver., 7/10 constant corr. ** - *********************************************************************** - */ - -/* - *********************************************************************** - ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. ** - ** ** - ** License to copy and use this software is granted provided that ** - ** it is identified as the "RSA Data Security, Inc. MD5 Message- ** - ** Digest Algorithm" in all material mentioning or referencing this ** - ** software or this function. ** - ** ** - ** License is also granted to make and use derivative works ** - ** provided that such works are identified as "derived from the RSA ** - ** Data Security, Inc. MD5 Message-Digest Algorithm" in all ** - ** material mentioning or referencing the derived work. ** - ** ** - ** RSA Data Security, Inc. makes no representations concerning ** - ** either the merchantability of this software or the suitability ** - ** of this software for any particular purpose. It is provided "as ** - ** is" without express or implied warranty of any kind. ** - ** ** - ** These notices must be retained in any copies of any part of this ** - ** documentation and/or software. ** - *********************************************************************** - */ - -#include <stdlib.h> -#include <string.h> - -#include "md5.h" - -/* - *********************************************************************** - ** Message-digest routines: ** - ** To form the message digest for a message M ** - ** (1) Initialize a context buffer mdContext using MD5Init ** - ** (2) Call MD5Update on mdContext and M ** - ** (3) Call MD5Final on mdContext ** - ** The message digest is now in mdContext->digest[0...15] ** - *********************************************************************** - */ - -/* forward declaration */ -static void Transform (); - -static unsigned char PADDING[64] = { - 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; - -/* F, G, H and I are basic MD5 functions */ -#define F(x, y, z) (((x) & (y)) | ((~x) & (z))) -#define G(x, y, z) (((x) & (z)) | ((y) & (~z))) -#define H(x, y, z) ((x) ^ (y) ^ (z)) -#define I(x, y, z) ((y) ^ ((x) | (~z))) - -/* ROTATE_LEFT rotates x left n bits */ -#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) - -/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */ -/* Rotation is separate from addition to prevent recomputation */ -#define FF(a, b, c, d, x, s, ac) \ - {(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } -#define GG(a, b, c, d, x, s, ac) \ - {(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } -#define HH(a, b, c, d, x, s, ac) \ - {(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } -#define II(a, b, c, d, x, s, ac) \ - {(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \ - (a) = ROTATE_LEFT ((a), (s)); \ - (a) += (b); \ - } - -#ifdef __STDC__ -#define UL(x) x##U -#else -#define UL(x) x -#endif - -/* The routine MD5Init initializes the message-digest context - mdContext. All fields are set to zero. - */ -void MD5Init (mdContext) -MD5_CTX *mdContext; -{ - mdContext->i[0] = mdContext->i[1] = (UINT4)0; - - /* Load magic initialization constants. - */ - mdContext->buf[0] = (UINT4)0x67452301; - mdContext->buf[1] = (UINT4)0xefcdab89; - mdContext->buf[2] = (UINT4)0x98badcfe; - mdContext->buf[3] = (UINT4)0x10325476; -} - -/* The routine MD5Update updates the message-digest context to - account for the presence of each of the characters inBuf[0..inLen-1] - in the message whose digest is being computed. - */ -void MD5Update (mdContext, inBuf, inLen) -MD5_CTX *mdContext; -unsigned char *inBuf; -unsigned int inLen; -{ - UINT4 in[16]; - int mdi; - unsigned int i, ii; - - /* compute number of bytes mod 64 */ - mdi = (int)((mdContext->i[0] >> 3) & 0x3F); - - /* update number of bits */ - if ((mdContext->i[0] + ((UINT4)inLen << 3)) < mdContext->i[0]) - mdContext->i[1]++; - mdContext->i[0] += ((UINT4)inLen << 3); - mdContext->i[1] += ((UINT4)inLen >> 29); - - while (inLen--) { - /* add new character to buffer, increment mdi */ - mdContext->in[mdi++] = *inBuf++; - - /* transform if necessary */ - if (mdi == 0x40) { - for (i = 0, ii = 0; i < 16; i++, ii += 4) - in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | - (((UINT4)mdContext->in[ii+2]) << 16) | - (((UINT4)mdContext->in[ii+1]) << 8) | - ((UINT4)mdContext->in[ii]); - Transform (mdContext->buf, in); - mdi = 0; - } - } -} - -/* The routine MD5Final terminates the message-digest computation and - ends with the desired message digest in mdContext->digest[0...15]. - */ -void MD5Final (hash, mdContext) -unsigned char hash[]; -MD5_CTX *mdContext; -{ - UINT4 in[16]; - int mdi; - unsigned int i, ii; - unsigned int padLen; - - /* save number of bits */ - in[14] = mdContext->i[0]; - in[15] = mdContext->i[1]; - - /* compute number of bytes mod 64 */ - mdi = (int)((mdContext->i[0] >> 3) & 0x3F); - - /* pad out to 56 mod 64 */ - padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi); - MD5Update (mdContext, PADDING, padLen); - - /* append length in bits and transform */ - for (i = 0, ii = 0; i < 14; i++, ii += 4) - in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | - (((UINT4)mdContext->in[ii+2]) << 16) | - (((UINT4)mdContext->in[ii+1]) << 8) | - ((UINT4)mdContext->in[ii]); - Transform (mdContext->buf, in); - - /* store buffer in digest */ - for (i = 0, ii = 0; i < 4; i++, ii += 4) { - mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF); - mdContext->digest[ii+1] = - (unsigned char)((mdContext->buf[i] >> 8) & 0xFF); - mdContext->digest[ii+2] = - (unsigned char)((mdContext->buf[i] >> 16) & 0xFF); - mdContext->digest[ii+3] = - (unsigned char)((mdContext->buf[i] >> 24) & 0xFF); - } - memcpy(hash, mdContext->digest, 16); -} - -/* Basic MD5 step. Transforms buf based on in. - */ -static void Transform (buf, in) -UINT4 *buf; -UINT4 *in; -{ - UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; - - /* Round 1 */ -#define S11 7 -#define S12 12 -#define S13 17 -#define S14 22 - FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */ - FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */ - FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */ - FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */ - FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */ - FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */ - FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */ - FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */ - FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */ - FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */ - FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */ - FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */ - FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */ - FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */ - FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */ - FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */ - - /* Round 2 */ -#define S21 5 -#define S22 9 -#define S23 14 -#define S24 20 - GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */ - GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */ - GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */ - GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */ - GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */ - GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */ - GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */ - GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */ - GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */ - GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */ - GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */ - GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */ - GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */ - GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */ - GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */ - GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */ - - /* Round 3 */ -#define S31 4 -#define S32 11 -#define S33 16 -#define S34 23 - HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */ - HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */ - HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */ - HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */ - HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */ - HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */ - HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */ - HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */ - HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */ - HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */ - HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */ - HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */ - HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */ - HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */ - HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */ - HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */ - - /* Round 4 */ -#define S41 6 -#define S42 10 -#define S43 15 -#define S44 21 - II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */ - II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */ - II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */ - II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */ - II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */ - II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */ - II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */ - II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */ - II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */ - II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */ - II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */ - II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */ - II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */ - II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */ - II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */ - II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */ - - buf[0] += a; - buf[1] += b; - buf[2] += c; - buf[3] += d; -} - -/* - *********************************************************************** - ** End of md5.c ** - ******************************** (cut) ******************************** - */ diff --git a/mdk-stage1/ppp/pppd/md5.h b/mdk-stage1/ppp/pppd/md5.h deleted file mode 100644 index 7492b2228..000000000 --- a/mdk-stage1/ppp/pppd/md5.h +++ /dev/null @@ -1,58 +0,0 @@ -/* - *********************************************************************** - ** md5.h -- header file for implementation of MD5 ** - ** RSA Data Security, Inc. MD5 Message-Digest Algorithm ** - ** Created: 2/17/90 RLR ** - ** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version ** - ** Revised (for MD5): RLR 4/27/91 ** - ** -- G modified to have y&~z instead of y&z ** - ** -- FF, GG, HH modified to add in last register done ** - ** -- Access pattern: round 2 works mod 5, round 3 works mod 3 ** - ** -- distinct additive constant for each step ** - ** -- round 4 added, working mod 7 ** - *********************************************************************** - */ - -/* - *********************************************************************** - ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. ** - ** ** - ** License to copy and use this software is granted provided that ** - ** it is identified as the "RSA Data Security, Inc. MD5 Message- ** - ** Digest Algorithm" in all material mentioning or referencing this ** - ** software or this function. ** - ** ** - ** License is also granted to make and use derivative works ** - ** provided that such works are identified as "derived from the RSA ** - ** Data Security, Inc. MD5 Message-Digest Algorithm" in all ** - ** material mentioning or referencing the derived work. ** - ** ** - ** RSA Data Security, Inc. makes no representations concerning ** - ** either the merchantability of this software or the suitability ** - ** of this software for any particular purpose. It is provided "as ** - ** is" without express or implied warranty of any kind. ** - ** ** - ** These notices must be retained in any copies of any part of this ** - ** documentation and/or software. ** - *********************************************************************** - */ - -#ifndef __MD5_INCLUDE__ - -/* typedef a 32-bit type */ -typedef unsigned int UINT4; - -/* Data structure for MD5 (Message-Digest) computation */ -typedef struct { - UINT4 i[2]; /* number of _bits_ handled mod 2^64 */ - UINT4 buf[4]; /* scratch buffer */ - unsigned char in[64]; /* input buffer */ - unsigned char digest[16]; /* actual digest after MD5Final call */ -} MD5_CTX; - -void MD5Init (); -void MD5Update (); -void MD5Final (); - -#define __MD5_INCLUDE__ -#endif /* __MD5_INCLUDE__ */ diff --git a/mdk-stage1/ppp/pppd/multilink.c b/mdk-stage1/ppp/pppd/multilink.c deleted file mode 100644 index c30b07e0a..000000000 --- a/mdk-stage1/ppp/pppd/multilink.c +++ /dev/null @@ -1,397 +0,0 @@ -/* - * multilink.c - support routines for multilink. - * - * Copyright (c) 2000 Paul Mackerras. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms. The name of the author may not be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <ctype.h> -#include <netdb.h> -#include <errno.h> -#include <signal.h> -#include <netinet/in.h> - -#include "pppd.h" -#include "fsm.h" -#include "lcp.h" -#include "tdb.h" - -bool endpoint_specified; /* user gave explicit endpoint discriminator */ -char *bundle_id; /* identifier for our bundle */ - -extern TDB_CONTEXT *pppdb; -extern char db_key[]; - -static int get_default_epdisc __P((struct epdisc *)); -static int parse_num __P((char *str, const char *key, int *valp)); -static int owns_unit __P((TDB_DATA pid, int unit)); - -#define set_ip_epdisc(ep, addr) do { \ - ep->length = 4; \ - ep->value[0] = addr >> 24; \ - ep->value[1] = addr >> 16; \ - ep->value[2] = addr >> 8; \ - ep->value[3] = addr; \ -} while (0) - -#define LOCAL_IP_ADDR(addr) \ - (((addr) & 0xff000000) == 0x0a000000 /* 10.x.x.x */ \ - || ((addr) & 0xfff00000) == 0xac100000 /* 172.16.x.x */ \ - || ((addr) & 0xffff0000) == 0xc0a80000) /* 192.168.x.x */ - -#define process_exists(n) (kill((n), 0) == 0 || errno != ESRCH) - -void -mp_check_options() -{ - lcp_options *wo = &lcp_wantoptions[0]; - lcp_options *ao = &lcp_allowoptions[0]; - - if (!multilink) - return; - /* if we're doing multilink, we have to negotiate MRRU */ - if (!wo->neg_mrru) { - /* mrru not specified, default to mru */ - wo->mrru = wo->mru; - wo->neg_mrru = 1; - } - ao->mrru = ao->mru; - ao->neg_mrru = 1; - - if (!wo->neg_endpoint && !noendpoint) { - /* get a default endpoint value */ - wo->neg_endpoint = get_default_epdisc(&wo->endpoint); - } -} - -/* - * Make a new bundle or join us to an existing bundle - * if we are doing multilink. - */ -int -mp_join_bundle() -{ - lcp_options *go = &lcp_gotoptions[0]; - lcp_options *ho = &lcp_hisoptions[0]; - lcp_options *ao = &lcp_allowoptions[0]; - int unit, pppd_pid; - int l, mtu; - char *p; - TDB_DATA key, pid, rec; - - if (!go->neg_mrru || !ho->neg_mrru) { - /* not doing multilink */ - if (go->neg_mrru) - notice("oops, multilink negotiated only for receive"); - mtu = ho->neg_mru? ho->mru: PPP_MRU; - if (mtu > ao->mru) - mtu = ao->mru; - if (demand) { - /* already have a bundle */ - cfg_bundle(0, 0, 0, 0); - netif_set_mtu(0, mtu); - return 0; - } - make_new_bundle(0, 0, 0, 0); - set_ifunit(1); - netif_set_mtu(0, mtu); - return 0; - } - - /* - * Find the appropriate bundle or join a new one. - * First we make up a name for the bundle. - * The length estimate is worst-case assuming every - * character has to be quoted. - */ - l = 4 * strlen(peer_authname) + 10; - if (ho->neg_endpoint) - l += 3 * ho->endpoint.length + 8; - if (bundle_name) - l += 3 * strlen(bundle_name) + 2; - bundle_id = malloc(l); - if (bundle_id == 0) - novm("bundle identifier"); - - p = bundle_id; - p += slprintf(p, l-1, "BUNDLE=\"%q\"", peer_authname); - if (ho->neg_endpoint || bundle_name) - *p++ = '/'; - if (ho->neg_endpoint) - p += slprintf(p, bundle_id+l-p, "%s", - epdisc_to_str(&ho->endpoint)); - if (bundle_name) - p += slprintf(p, bundle_id+l-p, "/%v", bundle_name); - - /* - * For demand mode, we only need to configure the bundle - * and attach the link. - */ - mtu = MIN(ho->mrru, ao->mru); - if (demand) { - cfg_bundle(go->mrru, ho->mrru, go->neg_ssnhf, ho->neg_ssnhf); - netif_set_mtu(0, mtu); - script_setenv("BUNDLE", bundle_id + 7, 1); - return 0; - } - - /* - * Check if the bundle ID is already in the database. - */ - unit = -1; - tdb_writelock(pppdb); - key.dptr = bundle_id; - key.dsize = p - bundle_id; - pid = tdb_fetch(pppdb, key); - if (pid.dptr != NULL) { - /* bundle ID exists, see if the pppd record exists */ - rec = tdb_fetch(pppdb, pid); - if (rec.dptr != NULL) { - /* it is, parse the interface number */ - parse_num(rec.dptr, "IFNAME=ppp", &unit); - /* check the pid value */ - if (!parse_num(rec.dptr, "PPPD_PID=", &pppd_pid) - || !process_exists(pppd_pid) - || !owns_unit(pid, unit)) - unit = -1; - free(rec.dptr); - } - free(pid.dptr); - } - - if (unit >= 0) { - /* attach to existing unit */ - if (bundle_attach(unit)) { - set_ifunit(0); - script_setenv("BUNDLE", bundle_id + 7, 0); - tdb_writeunlock(pppdb); - info("Link attached to %s", ifname); - return 1; - } - /* attach failed because bundle doesn't exist */ - } - - /* we have to make a new bundle */ - make_new_bundle(go->mrru, ho->mrru, go->neg_ssnhf, ho->neg_ssnhf); - set_ifunit(1); - netif_set_mtu(0, mtu); - script_setenv("BUNDLE", bundle_id + 7, 1); - tdb_writeunlock(pppdb); - info("New bundle %s created", ifname); - return 0; -} - -static int -parse_num(str, key, valp) - char *str; - const char *key; - int *valp; -{ - char *p, *endp; - int i; - - p = strstr(str, key); - if (p != 0) { - p += strlen(key); - i = strtol(p, &endp, 10); - if (endp != p && (*endp == 0 || *endp == ';')) { - *valp = i; - return 1; - } - } - return 0; -} - -/* - * Check whether the pppd identified by `key' still owns ppp unit `unit'. - */ -static int -owns_unit(key, unit) - TDB_DATA key; - int unit; -{ - char ifkey[32]; - TDB_DATA kd, vd; - int ret = 0; - - slprintf(ifkey, sizeof(ifkey), "IFNAME=ppp%d", unit); - kd.dptr = ifkey; - kd.dsize = strlen(ifkey); - vd = tdb_fetch(pppdb, kd); - if (vd.dptr != NULL) { - ret = vd.dsize == key.dsize - && memcmp(vd.dptr, key.dptr, vd.dsize) == 0; - free(vd.dptr); - } - return ret; -} - -static int -get_default_epdisc(ep) - struct epdisc *ep; -{ - char *p; - struct hostent *hp; - u_int32_t addr; - - /* First try for an ethernet MAC address */ - p = get_first_ethernet(); - if (p != 0 && get_if_hwaddr(ep->value, p) >= 0) { - ep->class = EPD_MAC; - ep->length = 6; - return 1; - } - - /* see if our hostname corresponds to a reasonable IP address */ - hp = gethostbyname(hostname); - if (hp != NULL) { - addr = *(u_int32_t *)hp->h_addr; - if (!bad_ip_adrs(addr)) { - addr = ntohl(addr); - if (!LOCAL_IP_ADDR(addr)) { - ep->class = EPD_IP; - set_ip_epdisc(ep, addr); - return 1; - } - } - } - - return 0; -} - -/* - * epdisc_to_str - make a printable string from an endpoint discriminator. - */ - -static char *endp_class_names[] = { - "null", "local", "IP", "MAC", "magic", "phone" -}; - -char * -epdisc_to_str(ep) - struct epdisc *ep; -{ - static char str[MAX_ENDP_LEN*3+8]; - u_char *p = ep->value; - int i, mask = 0; - char *q, c, c2; - - if (ep->class == EPD_NULL && ep->length == 0) - return "null"; - if (ep->class == EPD_IP && ep->length == 4) { - u_int32_t addr; - - GETLONG(addr, p); - slprintf(str, sizeof(str), "IP:%I", htonl(addr)); - return str; - } - - c = ':'; - c2 = '.'; - if (ep->class == EPD_MAC && ep->length == 6) - c2 = ':'; - else if (ep->class == EPD_MAGIC && (ep->length % 4) == 0) - mask = 3; - q = str; - if (ep->class <= EPD_PHONENUM) - q += slprintf(q, sizeof(str)-1, "%s", - endp_class_names[ep->class]); - else - q += slprintf(q, sizeof(str)-1, "%d", ep->class); - c = ':'; - for (i = 0; i < ep->length && i < MAX_ENDP_LEN; ++i) { - if ((i & mask) == 0) { - *q++ = c; - c = c2; - } - q += slprintf(q, str + sizeof(str) - q, "%.2x", ep->value[i]); - } - return str; -} - -static int hexc_val(int c) -{ - if (c >= 'a') - return c - 'a' + 10; - if (c >= 'A') - return c - 'A' + 10; - return c - '0'; -} - -int -str_to_epdisc(ep, str) - struct epdisc *ep; - char *str; -{ - int i, l; - char *p, *endp; - - for (i = EPD_NULL; i <= EPD_PHONENUM; ++i) { - int sl = strlen(endp_class_names[i]); - if (strncasecmp(str, endp_class_names[i], sl) == 0) { - str += sl; - break; - } - } - if (i > EPD_PHONENUM) { - /* not a class name, try a decimal class number */ - i = strtol(str, &endp, 10); - if (endp == str) - return 0; /* can't parse class number */ - str = endp; - } - ep->class = i; - if (*str == 0) { - ep->length = 0; - return 1; - } - if (*str != ':' && *str != '.') - return 0; - ++str; - - if (i == EPD_IP) { - u_int32_t addr; - i = parse_dotted_ip(str, &addr); - if (i == 0 || str[i] != 0) - return 0; - set_ip_epdisc(ep, addr); - return 1; - } - if (i == EPD_MAC && get_if_hwaddr(ep->value, str) >= 0) { - ep->length = 6; - return 1; - } - - p = str; - for (l = 0; l < MAX_ENDP_LEN; ++l) { - if (*str == 0) - break; - if (p <= str) - for (p = str; isxdigit(*p); ++p) - ; - i = p - str; - if (i == 0) - return 0; - ep->value[l] = hexc_val(*str++); - if ((i & 1) == 0) - ep->value[l] = (ep->value[l] << 4) + hexc_val(*str++); - if (*str == ':' || *str == '.') - ++str; - } - if (*str != 0 || (ep->class == EPD_MAC && l != 6)) - return 0; - ep->length = l; - return 1; -} - diff --git a/mdk-stage1/ppp/pppd/options.c b/mdk-stage1/ppp/pppd/options.c deleted file mode 100644 index 1921d9ec5..000000000 --- a/mdk-stage1/ppp/pppd/options.c +++ /dev/null @@ -1,1513 +0,0 @@ -/* - * options.c - handles option processing for PPP. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -#include <ctype.h> -#include <stdio.h> -#include <errno.h> -#include <unistd.h> -#include <fcntl.h> -#include <stdlib.h> -#include <syslog.h> -#include <string.h> -#include <pwd.h> -#ifdef PLUGIN -#include <dlfcn.h> -#endif -#ifdef PPP_FILTER -#include <pcap.h> -#include <pcap-int.h> /* XXX: To get struct pcap */ -#endif - -#include "pppd.h" -#include "pathnames.h" - -#if defined(ultrix) || defined(NeXT) -char *strdup __P((char *)); -#endif - -static const char rcsid[] = RCSID; - -struct option_value { - struct option_value *next; - const char *source; - char value[1]; -}; - -/* - * Option variables and default values. - */ -#ifdef PPP_FILTER -int dflag = 0; /* Tell libpcap we want debugging */ -#endif -int debug = 0; /* Debug flag */ -int kdebugflag = 0; /* Tell kernel to print debug messages */ -int default_device = 1; /* Using /dev/tty or equivalent */ -char devnam[MAXPATHLEN]; /* Device name */ -bool nodetach = 0; /* Don't detach from controlling tty */ -bool updetach = 0; /* Detach once link is up */ -int maxconnect = 0; /* Maximum connect time */ -char user[MAXNAMELEN]; /* Username for PAP */ -char passwd[MAXSECRETLEN]; /* Password for PAP */ -bool persist = 0; /* Reopen link after it goes down */ -char our_name[MAXNAMELEN]; /* Our name for authentication purposes */ -bool demand = 0; /* do dial-on-demand */ -char *ipparam = NULL; /* Extra parameter for ip up/down scripts */ -int idle_time_limit = 0; /* Disconnect if idle for this many seconds */ -int holdoff = 30; /* # seconds to pause before reconnecting */ -bool holdoff_specified; /* true if a holdoff value has been given */ -int log_to_fd = 1; /* send log messages to this fd too */ -bool log_default = 1; /* log_to_fd is default (stdout) */ -int maxfail = 10; /* max # of unsuccessful connection attempts */ -char linkname[MAXPATHLEN]; /* logical name for link */ -bool tune_kernel; /* may alter kernel settings */ -int connect_delay = 1000; /* wait this many ms after connect script */ -int req_unit = -1; /* requested interface unit */ -bool multilink = 0; /* Enable multilink operation */ -char *bundle_name = NULL; /* bundle name for multilink */ -bool dump_options; /* print out option values */ -bool dryrun; /* print out option values and exit */ -char *domain; /* domain name set by domain option */ - -extern option_t auth_options[]; -extern struct stat devstat; - -#ifdef PPP_FILTER -struct bpf_program pass_filter;/* Filter program for packets to pass */ -struct bpf_program active_filter; /* Filter program for link-active pkts */ -pcap_t pc; /* Fake struct pcap so we can compile expr */ -#endif - -char *current_option; /* the name of the option being parsed */ -int privileged_option; /* set iff the current option came from root */ -char *option_source; /* string saying where the option came from */ -int option_priority = OPRIO_CFGFILE; /* priority of the current options */ -bool devnam_fixed; /* can no longer change device name */ - -static int logfile_fd = -1; /* fd opened for log file */ -static char logfile_name[MAXPATHLEN]; /* name of log file */ - -/* - * Prototypes - */ -static int setdomain __P((char **)); -static int readfile __P((char **)); -static int callfile __P((char **)); -static int showversion __P((char **)); -static int showhelp __P((char **)); -static void usage __P((void)); -static int setlogfile __P((char **)); -#ifdef PLUGIN -static int loadplugin __P((char **)); -#endif - -#ifdef PPP_FILTER -static int setpassfilter __P((char **)); -static int setactivefilter __P((char **)); -#endif - -static option_t *find_option __P((const char *name)); -static int process_option __P((option_t *, char *, char **)); -static int n_arguments __P((option_t *)); -static int number_option __P((char *, u_int32_t *, int)); - -/* - * Structure to store extra lists of options. - */ -struct option_list { - option_t *options; - struct option_list *next; -}; - -static struct option_list *extra_options = NULL; - -/* - * Valid arguments. - */ -option_t general_options[] = { - { "debug", o_int, &debug, - "Increase debugging level", OPT_INC | OPT_NOARG | 1 }, - { "-d", o_int, &debug, - "Increase debugging level", - OPT_ALIAS | OPT_INC | OPT_NOARG | 1 }, - - { "kdebug", o_int, &kdebugflag, - "Set kernel driver debug level", OPT_PRIO }, - - { "nodetach", o_bool, &nodetach, - "Don't detach from controlling tty", OPT_PRIO | 1 }, - { "-detach", o_bool, &nodetach, - "Don't detach from controlling tty", OPT_ALIAS | OPT_PRIOSUB | 1 }, - { "updetach", o_bool, &updetach, - "Detach from controlling tty once link is up", - OPT_PRIOSUB | OPT_A2CLR | 1, &nodetach }, - - { "holdoff", o_int, &holdoff, - "Set time in seconds before retrying connection", OPT_PRIO }, - - { "idle", o_int, &idle_time_limit, - "Set time in seconds before disconnecting idle link", OPT_PRIO }, - - { "maxconnect", o_int, &maxconnect, - "Set connection time limit", - OPT_PRIO | OPT_LLIMIT | OPT_NOINCR | OPT_ZEROINF }, - - { "domain", o_special, (void *)setdomain, - "Add given domain name to hostname", - OPT_PRIO | OPT_PRIV | OPT_A2STRVAL, &domain }, - - { "file", o_special, (void *)readfile, - "Take options from a file", OPT_NOPRINT }, - { "call", o_special, (void *)callfile, - "Take options from a privileged file", OPT_NOPRINT }, - - { "persist", o_bool, &persist, - "Keep on reopening connection after close", OPT_PRIO | 1 }, - { "nopersist", o_bool, &persist, - "Turn off persist option", OPT_PRIOSUB }, - - { "demand", o_bool, &demand, - "Dial on demand", OPT_INITONLY | 1, &persist }, - - { "--version", o_special_noarg, (void *)showversion, - "Show version number" }, - { "--help", o_special_noarg, (void *)showhelp, - "Show brief listing of options" }, - { "-h", o_special_noarg, (void *)showhelp, - "Show brief listing of options", OPT_ALIAS }, - - { "logfile", o_special, (void *)setlogfile, - "Append log messages to this file", - OPT_PRIO | OPT_A2STRVAL | OPT_STATIC, &logfile_name }, - { "logfd", o_int, &log_to_fd, - "Send log messages to this file descriptor", - OPT_PRIOSUB | OPT_A2CLR, &log_default }, - { "nolog", o_int, &log_to_fd, - "Don't send log messages to any file", - OPT_PRIOSUB | OPT_NOARG | OPT_VAL(-1) }, - { "nologfd", o_int, &log_to_fd, - "Don't send log messages to any file descriptor", - OPT_PRIOSUB | OPT_ALIAS | OPT_NOARG | OPT_VAL(-1) }, - - { "linkname", o_string, linkname, - "Set logical name for link", - OPT_PRIO | OPT_PRIV | OPT_STATIC, NULL, MAXPATHLEN }, - - { "maxfail", o_int, &maxfail, - "Maximum number of unsuccessful connection attempts to allow", - OPT_PRIO }, - - { "ktune", o_bool, &tune_kernel, - "Alter kernel settings as necessary", OPT_PRIO | 1 }, - { "noktune", o_bool, &tune_kernel, - "Don't alter kernel settings", OPT_PRIOSUB }, - - { "connect-delay", o_int, &connect_delay, - "Maximum time (in ms) to wait after connect script finishes", - OPT_PRIO }, - - { "unit", o_int, &req_unit, - "PPP interface unit number to use if possible", - OPT_PRIO | OPT_LLIMIT, 0, 0 }, - - { "dump", o_bool, &dump_options, - "Print out option values after parsing all options", 1 }, - { "dryrun", o_bool, &dryrun, - "Stop after parsing, printing, and checking options", 1 }, - -#ifdef HAVE_MULTILINK - { "multilink", o_bool, &multilink, - "Enable multilink operation", OPT_PRIO | 1 }, - { "mp", o_bool, &multilink, - "Enable multilink operation", OPT_PRIOSUB | OPT_ALIAS | 1 }, - { "nomultilink", o_bool, &multilink, - "Disable multilink operation", OPT_PRIOSUB | 0 }, - { "nomp", o_bool, &multilink, - "Disable multilink operation", OPT_PRIOSUB | OPT_ALIAS | 0 }, - - { "bundle", o_string, &bundle_name, - "Bundle name for multilink", OPT_PRIO }, -#endif /* HAVE_MULTILINK */ - -#ifdef PLUGIN - { "plugin", o_special, (void *)loadplugin, - "Load a plug-in module into pppd", OPT_PRIV | OPT_A2LIST }, -#endif - -#ifdef PPP_FILTER - { "pdebug", o_int, &dflag, - "libpcap debugging", OPT_PRIO }, - - { "pass-filter", 1, setpassfilter, - "set filter for packets to pass", OPT_PRIO }, - - { "active-filter", 1, setactivefilter, - "set filter for active pkts", OPT_PRIO }, -#endif - - { NULL } -}; - -#ifndef IMPLEMENTATION -#define IMPLEMENTATION "" -#endif - -static char *usage_string = "\ -pppd version %s\n\ -Usage: %s [ options ], where options are:\n\ - <device> Communicate over the named device\n\ - <speed> Set the baud rate to <speed>\n\ - <loc>:<rem> Set the local and/or remote interface IP\n\ - addresses. Either one may be omitted.\n\ - asyncmap <n> Set the desired async map to hex <n>\n\ - auth Require authentication from peer\n\ - connect <p> Invoke shell command <p> to set up the serial line\n\ - crtscts Use hardware RTS/CTS flow control\n\ - defaultroute Add default route through interface\n\ - file <f> Take options from file <f>\n\ - modem Use modem control lines\n\ - mru <n> Set MRU value to <n> for negotiation\n\ -See pppd(8) for more options.\n\ -"; - -/* - * parse_args - parse a string of arguments from the command line. - */ -int -parse_args(argc, argv) - int argc; - char **argv; -{ - char *arg; - option_t *opt; - int n; - - privileged_option = privileged; - option_source = "command line"; - option_priority = OPRIO_CMDLINE; - while (argc > 0) { - arg = *argv++; - --argc; - opt = find_option(arg); - if (opt == NULL) { - option_error("unrecognized option '%s'", arg); - usage(); - return 0; - } - n = n_arguments(opt); - if (argc < n) { - option_error("too few parameters for option %s", arg); - return 0; - } - if (!process_option(opt, arg, argv)) - return 0; - argc -= n; - argv += n; - } - return 1; -} - -/* - * options_from_file - Read a string of options from a file, - * and interpret them. - */ -int -options_from_file(filename, must_exist, check_prot, priv) - char *filename; - int must_exist; - int check_prot; - int priv; -{ - FILE *f; - int i, newline, ret, err; - option_t *opt; - int oldpriv, n; - char *oldsource; - char *argv[MAXARGS]; - char args[MAXARGS][MAXWORDLEN]; - char cmd[MAXWORDLEN]; - - if (check_prot) - seteuid(getuid()); - f = fopen(filename, "r"); - err = errno; - if (check_prot) - seteuid(0); - if (f == NULL) { - errno = err; - if (!must_exist) { - if (err != ENOENT && err != ENOTDIR) - warn("Warning: can't open options file %s: %m", filename); - return 1; - } - option_error("Can't open options file %s: %m", filename); - return 0; - } - - oldpriv = privileged_option; - privileged_option = priv; - oldsource = option_source; - option_source = strdup(filename); - if (option_source == NULL) - option_source = "file"; - ret = 0; - while (getword(f, cmd, &newline, filename)) { - opt = find_option(cmd); - if (opt == NULL) { - option_error("In file %s: unrecognized option '%s'", - filename, cmd); - goto err; - } - n = n_arguments(opt); - for (i = 0; i < n; ++i) { - if (!getword(f, args[i], &newline, filename)) { - option_error( - "In file %s: too few parameters for option '%s'", - filename, cmd); - goto err; - } - argv[i] = args[i]; - } - if (!process_option(opt, cmd, argv)) - goto err; - } - ret = 1; - -err: - fclose(f); - privileged_option = oldpriv; - option_source = oldsource; - return ret; -} - -/* - * options_from_user - See if the use has a ~/.ppprc file, - * and if so, interpret options from it. - */ -int -options_from_user() -{ - char *user, *path, *file; - int ret; - struct passwd *pw; - size_t pl; - - pw = getpwuid(getuid()); - if (pw == NULL || (user = pw->pw_dir) == NULL || user[0] == 0) - return 1; - file = _PATH_USEROPT; - pl = strlen(user) + strlen(file) + 2; - path = malloc(pl); - if (path == NULL) - novm("init file name"); - slprintf(path, pl, "%s/%s", user, file); - option_priority = OPRIO_CFGFILE; - ret = options_from_file(path, 0, 1, privileged); - free(path); - return ret; -} - -/* - * options_for_tty - See if an options file exists for the serial - * device, and if so, interpret options from it. - * We only allow the per-tty options file to override anything from - * the command line if it is something that the user can't override - * once it has been set by root; this is done by giving configuration - * files a lower priority than the command line. - */ -int -options_for_tty() -{ - char *dev, *path, *p; - int ret; - size_t pl; - - dev = devnam; - if (strncmp(dev, "/dev/", 5) == 0) - dev += 5; - if (dev[0] == 0 || strcmp(dev, "tty") == 0) - return 1; /* don't look for /etc/ppp/options.tty */ - pl = strlen(_PATH_TTYOPT) + strlen(dev) + 1; - path = malloc(pl); - if (path == NULL) - novm("tty init file name"); - slprintf(path, pl, "%s%s", _PATH_TTYOPT, dev); - /* Turn slashes into dots, for Solaris case (e.g. /dev/term/a) */ - for (p = path + strlen(_PATH_TTYOPT); *p != 0; ++p) - if (*p == '/') - *p = '.'; - option_priority = OPRIO_CFGFILE; - ret = options_from_file(path, 0, 0, 1); - free(path); - return ret; -} - -/* - * options_from_list - process a string of options in a wordlist. - */ -int -options_from_list(w, priv) - struct wordlist *w; - int priv; -{ - char *argv[MAXARGS]; - option_t *opt; - int i, n, ret = 0; - struct wordlist *w0; - - privileged_option = priv; - option_source = "secrets file"; - option_priority = OPRIO_SECFILE; - - while (w != NULL) { - opt = find_option(w->word); - if (opt == NULL) { - option_error("In secrets file: unrecognized option '%s'", - w->word); - goto err; - } - n = n_arguments(opt); - w0 = w; - for (i = 0; i < n; ++i) { - w = w->next; - if (w == NULL) { - option_error( - "In secrets file: too few parameters for option '%s'", - w0->word); - goto err; - } - argv[i] = w->word; - } - if (!process_option(opt, w0->word, argv)) - goto err; - w = w->next; - } - ret = 1; - -err: - return ret; -} - -/* - * match_option - see if this option matches an option_t structure. - */ -static int -match_option(name, opt, dowild) - char *name; - option_t *opt; - int dowild; -{ - int (*match) __P((char *, char **, int)); - - if (dowild != (opt->type == o_wild)) - return 0; - if (!dowild) - return strcmp(name, opt->name) == 0; - match = (int (*) __P((char *, char **, int))) opt->addr; - return (*match)(name, NULL, 0); -} - -/* - * find_option - scan the option lists for the various protocols - * looking for an entry with the given name. - * This could be optimized by using a hash table. - */ -static option_t * -find_option(name) - const char *name; -{ - option_t *opt; - struct option_list *list; - int i, dowild; - - for (dowild = 0; dowild <= 1; ++dowild) { - for (opt = general_options; opt->name != NULL; ++opt) - if (match_option(name, opt, dowild)) - return opt; - for (opt = auth_options; opt->name != NULL; ++opt) - if (match_option(name, opt, dowild)) - return opt; - for (list = extra_options; list != NULL; list = list->next) - for (opt = list->options; opt->name != NULL; ++opt) - if (match_option(name, opt, dowild)) - return opt; - for (opt = the_channel->options; opt->name != NULL; ++opt) - if (match_option(name, opt, dowild)) - return opt; - for (i = 0; protocols[i] != NULL; ++i) - if ((opt = protocols[i]->options) != NULL) - for (; opt->name != NULL; ++opt) - if (match_option(name, opt, dowild)) - return opt; - } - return NULL; -} - -/* - * process_option - process one new-style option. - */ -static int -process_option(opt, cmd, argv) - option_t *opt; - char *cmd; - char **argv; -{ - u_int32_t v; - int iv, a; - char *sv; - int (*parser) __P((char **)); - int (*wildp) __P((char *, char **, int)); - char *optopt = (opt->type == o_wild)? "": " option"; - int prio = option_priority; - option_t *mainopt = opt; - - if ((opt->flags & OPT_PRIVFIX) && privileged_option) - prio += OPRIO_ROOT; - while (mainopt->flags & OPT_PRIOSUB) - --mainopt; - if (mainopt->flags & OPT_PRIO) { - if (prio < mainopt->priority) { - /* new value doesn't override old */ - if (prio == OPRIO_CMDLINE && mainopt->priority > OPRIO_ROOT) { - option_error("%s%s set in %s cannot be overridden\n", - opt->name, optopt, mainopt->source); - return 0; - } - return 1; - } - if (prio > OPRIO_ROOT && mainopt->priority == OPRIO_CMDLINE) - warn("%s%s from %s overrides command line", - opt->name, optopt, option_source); - } - - if ((opt->flags & OPT_INITONLY) && phase != PHASE_INITIALIZE) { - option_error("%s%s cannot be changed after initialization", - opt->name, optopt); - return 0; - } - if ((opt->flags & OPT_PRIV) && !privileged_option) { - option_error("using the %s%s requires root privilege", - opt->name, optopt); - return 0; - } - if ((opt->flags & OPT_ENABLE) && *(bool *)(opt->addr2) == 0) { - option_error("%s%s is disabled", opt->name, optopt); - return 0; - } - if ((opt->flags & OPT_DEVEQUIV) && devnam_fixed) { - option_error("the %s%s may not be changed in %s", - opt->name, optopt, option_source); - return 0; - } - - switch (opt->type) { - case o_bool: - v = opt->flags & OPT_VALUE; - *(bool *)(opt->addr) = v; - if (opt->addr2 && (opt->flags & OPT_A2COPY)) - *(bool *)(opt->addr2) = v; - break; - - case o_int: - iv = 0; - if ((opt->flags & OPT_NOARG) == 0) { - if (!int_option(*argv, &iv)) - return 0; - if ((((opt->flags & OPT_LLIMIT) && iv < opt->lower_limit) - || ((opt->flags & OPT_ULIMIT) && iv > opt->upper_limit)) - && !((opt->flags & OPT_ZEROOK && iv == 0))) { - char *zok = (opt->flags & OPT_ZEROOK)? " zero or": ""; - switch (opt->flags & OPT_LIMITS) { - case OPT_LLIMIT: - option_error("%s value must be%s >= %d", - opt->name, zok, opt->lower_limit); - break; - case OPT_ULIMIT: - option_error("%s value must be%s <= %d", - opt->name, zok, opt->upper_limit); - break; - case OPT_LIMITS: - option_error("%s value must be%s between %d and %d", - opt->name, opt->lower_limit, opt->upper_limit); - break; - } - return 0; - } - } - a = opt->flags & OPT_VALUE; - if (a >= 128) - a -= 256; /* sign extend */ - iv += a; - if (opt->flags & OPT_INC) - iv += *(int *)(opt->addr); - if ((opt->flags & OPT_NOINCR) && !privileged_option) { - int oldv = *(int *)(opt->addr); - if ((opt->flags & OPT_ZEROINF) ? - (oldv != 0 && (iv == 0 || iv > oldv)) : (iv > oldv)) { - option_error("%s value cannot be increased", opt->name); - return 0; - } - } - *(int *)(opt->addr) = iv; - if (opt->addr2 && (opt->flags & OPT_A2COPY)) - *(int *)(opt->addr2) = iv; - break; - - case o_uint32: - if (opt->flags & OPT_NOARG) { - v = opt->flags & OPT_VALUE; - if (v & 0x80) - v |= 0xffffff00U; - } else if (!number_option(*argv, &v, 16)) - return 0; - if (opt->flags & OPT_OR) - v |= *(u_int32_t *)(opt->addr); - *(u_int32_t *)(opt->addr) = v; - if (opt->addr2 && (opt->flags & OPT_A2COPY)) - *(u_int32_t *)(opt->addr2) = v; - break; - - case o_string: - if (opt->flags & OPT_STATIC) { - strlcpy((char *)(opt->addr), *argv, opt->upper_limit); - } else { - sv = strdup(*argv); - if (sv == NULL) - novm("option argument"); - *(char **)(opt->addr) = sv; - } - break; - - case o_special_noarg: - case o_special: - parser = (int (*) __P((char **))) opt->addr; - if (!(*parser)(argv)) - return 0; - if (opt->flags & OPT_A2LIST) { - struct option_value *ovp, **pp; - - ovp = malloc(sizeof(*ovp) + strlen(*argv)); - if (ovp != 0) { - strcpy(ovp->value, *argv); - ovp->source = option_source; - ovp->next = NULL; - pp = (struct option_value **) &opt->addr2; - while (*pp != 0) - pp = &(*pp)->next; - *pp = ovp; - } - } - break; - - case o_wild: - wildp = (int (*) __P((char *, char **, int))) opt->addr; - if (!(*wildp)(cmd, argv, 1)) - return 0; - break; - } - - if (opt->addr2 && (opt->flags & (OPT_A2COPY|OPT_ENABLE - |OPT_A2PRINTER|OPT_A2STRVAL|OPT_A2LIST)) == 0) - *(bool *)(opt->addr2) = !(opt->flags & OPT_A2CLR); - - mainopt->source = option_source; - mainopt->priority = prio; - mainopt->winner = opt - mainopt; - - return 1; -} - -/* - * override_value - if the option priorities would permit us to - * override the value of option, return 1 and update the priority - * and source of the option value. Otherwise returns 0. - */ -int -override_value(option, priority, source) - const char *option; - int priority; - const char *source; -{ - option_t *opt; - - opt = find_option(option); - if (opt == NULL) - return 0; - while (opt->flags & OPT_PRIOSUB) - --opt; - if ((opt->flags & OPT_PRIO) && priority < opt->priority) - return 0; - opt->priority = priority; - opt->source = source; - opt->winner = -1; - return 1; -} - -/* - * n_arguments - tell how many arguments an option takes - */ -static int -n_arguments(opt) - option_t *opt; -{ - return (opt->type == o_bool || opt->type == o_special_noarg - || (opt->flags & OPT_NOARG))? 0: 1; -} - -/* - * add_options - add a list of options to the set we grok. - */ -void -add_options(opt) - option_t *opt; -{ - struct option_list *list; - - list = malloc(sizeof(*list)); - if (list == 0) - novm("option list entry"); - list->options = opt; - list->next = extra_options; - extra_options = list; -} - -/* - * check_options - check that options are valid and consistent. - */ -void -check_options() -{ - if (logfile_fd >= 0 && logfile_fd != log_to_fd) - close(logfile_fd); -} - -/* - * print_option - print out an option and its value - */ -static void -print_option(opt, mainopt, printer, arg) - option_t *opt, *mainopt; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int i, v; - char *p; - - if (opt->flags & OPT_NOPRINT) - return; - switch (opt->type) { - case o_bool: - v = opt->flags & OPT_VALUE; - if (*(bool *)opt->addr != v) - /* this can happen legitimately, e.g. lock - option turned off for default device */ - break; - printer(arg, "%s", opt->name); - break; - case o_int: - v = opt->flags & OPT_VALUE; - if (v >= 128) - v -= 256; - i = *(int *)opt->addr; - if (opt->flags & OPT_NOARG) { - printer(arg, "%s", opt->name); - if (i != v) { - if (opt->flags & OPT_INC) { - for (; i > v; i -= v) - printer(arg, " %s", opt->name); - } else - printer(arg, " # oops: %d not %d\n", - i, v); - } - } else { - printer(arg, "%s %d", opt->name, i); - } - break; - case o_uint32: - printer(arg, "%s", opt->name); - if ((opt->flags & OPT_NOARG) == 0) - printer(arg, " %x", *(u_int32_t *)opt->addr); - break; - - case o_string: - if (opt->flags & OPT_HIDE) { - p = "??????"; - } else { - p = (char *) opt->addr; - if ((opt->flags & OPT_STATIC) == 0) - p = *(char **)p; - } - printer(arg, "%s %q", opt->name, p); - break; - - case o_special: - case o_special_noarg: - case o_wild: - if (opt->type != o_wild) { - printer(arg, "%s", opt->name); - if (n_arguments(opt) == 0) - break; - printer(arg, " "); - } - if (opt->flags & OPT_A2PRINTER) { - void (*oprt) __P((option_t *, - void ((*)__P((void *, char *, ...))), - void *)); - oprt = opt->addr2; - (*oprt)(opt, printer, arg); - } else if (opt->flags & OPT_A2STRVAL) { - p = (char *) opt->addr2; - if ((opt->flags & OPT_STATIC) == 0) - p = *(char **)p; - printer("%q", p); - } else if (opt->flags & OPT_A2LIST) { - struct option_value *ovp; - - ovp = (struct option_value *) opt->addr2; - for (;;) { - printer(arg, "%q", ovp->value); - if ((ovp = ovp->next) == NULL) - break; - printer(arg, "\t\t# (from %s)\n%s ", - ovp->source, opt->name); - } - } else { - printer(arg, "xxx # [don't know how to print value]"); - } - break; - - default: - printer(arg, "# %s value (type %d)", opt->name, opt->type); - break; - } - printer(arg, "\t\t# (from %s)\n", mainopt->source); -} - -/* - * print_option_list - print out options in effect from an - * array of options. - */ -static void -print_option_list(opt, printer, arg) - option_t *opt; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - while (opt->name != NULL) { - if (opt->priority != OPRIO_DEFAULT - && opt->winner != (short int) -1) - print_option(opt + opt->winner, opt, printer, arg); - do { - ++opt; - } while (opt->flags & OPT_PRIOSUB); - } -} - -/* - * print_options - print out what options are in effect. - */ -void -print_options(printer, arg) - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - struct option_list *list; - int i; - - printer(arg, "pppd options in effect:\n"); - print_option_list(general_options, printer, arg); - print_option_list(auth_options, printer, arg); - for (list = extra_options; list != NULL; list = list->next) - print_option_list(list->options, printer, arg); - print_option_list(the_channel->options, printer, arg); - for (i = 0; protocols[i] != NULL; ++i) - print_option_list(protocols[i]->options, printer, arg); -} - -/* - * usage - print out a message telling how to use the program. - */ -static void -usage() -{ - if (phase == PHASE_INITIALIZE) - fprintf(stderr, usage_string, VERSION, progname); -} - -/* - * showhelp - print out usage message and exit. - */ -static int -showhelp(argv) - char **argv; -{ - if (phase == PHASE_INITIALIZE) { - usage(); - exit(0); - } - return 0; -} - -/* - * showversion - print out the version number and exit. - */ -static int -showversion(argv) - char **argv; -{ - if (phase == PHASE_INITIALIZE) { - fprintf(stderr, "pppd version %s\n", VERSION); - exit(0); - } - return 0; -} - -/* - * option_error - print a message about an error in an option. - * The message is logged, and also sent to - * stderr if phase == PHASE_INITIALIZE. - */ -void -option_error __V((char *fmt, ...)) -{ - va_list args; - char buf[1024]; - -#if defined(__STDC__) - va_start(args, fmt); -#else - char *fmt; - va_start(args); - fmt = va_arg(args, char *); -#endif - vslprintf(buf, sizeof(buf), fmt, args); - va_end(args); - if (phase == PHASE_INITIALIZE) - fprintf(stderr, "%s: %s\n", progname, buf); - syslog(LOG_ERR, "%s", buf); -} - -#if 0 -/* - * readable - check if a file is readable by the real user. - */ -int -readable(fd) - int fd; -{ - uid_t uid; - int i; - struct stat sbuf; - - uid = getuid(); - if (uid == 0) - return 1; - if (fstat(fd, &sbuf) != 0) - return 0; - if (sbuf.st_uid == uid) - return sbuf.st_mode & S_IRUSR; - if (sbuf.st_gid == getgid()) - return sbuf.st_mode & S_IRGRP; - for (i = 0; i < ngroups; ++i) - if (sbuf.st_gid == groups[i]) - return sbuf.st_mode & S_IRGRP; - return sbuf.st_mode & S_IROTH; -} -#endif - -/* - * Read a word from a file. - * Words are delimited by white-space or by quotes (" or '). - * Quotes, white-space and \ may be escaped with \. - * \<newline> is ignored. - */ -int -getword(f, word, newlinep, filename) - FILE *f; - char *word; - int *newlinep; - char *filename; -{ - int c, len, escape; - int quoted, comment; - int value, digit, got, n; - -#define isoctal(c) ((c) >= '0' && (c) < '8') - - *newlinep = 0; - len = 0; - escape = 0; - comment = 0; - - /* - * First skip white-space and comments. - */ - for (;;) { - c = getc(f); - if (c == EOF) - break; - - /* - * A newline means the end of a comment; backslash-newline - * is ignored. Note that we cannot have escape && comment. - */ - if (c == '\n') { - if (!escape) { - *newlinep = 1; - comment = 0; - } else - escape = 0; - continue; - } - - /* - * Ignore characters other than newline in a comment. - */ - if (comment) - continue; - - /* - * If this character is escaped, we have a word start. - */ - if (escape) - break; - - /* - * If this is the escape character, look at the next character. - */ - if (c == '\\') { - escape = 1; - continue; - } - - /* - * If this is the start of a comment, ignore the rest of the line. - */ - if (c == '#') { - comment = 1; - continue; - } - - /* - * A non-whitespace character is the start of a word. - */ - if (!isspace(c)) - break; - } - - /* - * Save the delimiter for quoted strings. - */ - if (!escape && (c == '"' || c == '\'')) { - quoted = c; - c = getc(f); - } else - quoted = 0; - - /* - * Process characters until the end of the word. - */ - while (c != EOF) { - if (escape) { - /* - * This character is escaped: backslash-newline is ignored, - * various other characters indicate particular values - * as for C backslash-escapes. - */ - escape = 0; - if (c == '\n') { - c = getc(f); - continue; - } - - got = 0; - switch (c) { - case 'a': - value = '\a'; - break; - case 'b': - value = '\b'; - break; - case 'f': - value = '\f'; - break; - case 'n': - value = '\n'; - break; - case 'r': - value = '\r'; - break; - case 's': - value = ' '; - break; - case 't': - value = '\t'; - break; - - default: - if (isoctal(c)) { - /* - * \ddd octal sequence - */ - value = 0; - for (n = 0; n < 3 && isoctal(c); ++n) { - value = (value << 3) + (c & 07); - c = getc(f); - } - got = 1; - break; - } - - if (c == 'x') { - /* - * \x<hex_string> sequence - */ - value = 0; - c = getc(f); - for (n = 0; n < 2 && isxdigit(c); ++n) { - digit = toupper(c) - '0'; - if (digit > 10) - digit += '0' + 10 - 'A'; - value = (value << 4) + digit; - c = getc (f); - } - got = 1; - break; - } - - /* - * Otherwise the character stands for itself. - */ - value = c; - break; - } - - /* - * Store the resulting character for the escape sequence. - */ - if (len < MAXWORDLEN-1) - word[len] = value; - ++len; - - if (!got) - c = getc(f); - continue; - - } - - /* - * Not escaped: see if we've reached the end of the word. - */ - if (quoted) { - if (c == quoted) - break; - } else { - if (isspace(c) || c == '#') { - ungetc (c, f); - break; - } - } - - /* - * Backslash starts an escape sequence. - */ - if (c == '\\') { - escape = 1; - c = getc(f); - continue; - } - - /* - * An ordinary character: store it in the word and get another. - */ - if (len < MAXWORDLEN-1) - word[len] = c; - ++len; - - c = getc(f); - } - - /* - * End of the word: check for errors. - */ - if (c == EOF) { - if (ferror(f)) { - if (errno == 0) - errno = EIO; - option_error("Error reading %s: %m", filename); - die(1); - } - /* - * If len is zero, then we didn't find a word before the - * end of the file. - */ - if (len == 0) - return 0; - } - - /* - * Warn if the word was too long, and append a terminating null. - */ - if (len >= MAXWORDLEN) { - option_error("warning: word in file %s too long (%.20s...)", - filename, word); - len = MAXWORDLEN - 1; - } - word[len] = 0; - - return 1; - -#undef isoctal - -} - -/* - * number_option - parse an unsigned numeric parameter for an option. - */ -static int -number_option(str, valp, base) - char *str; - u_int32_t *valp; - int base; -{ - char *ptr; - - *valp = strtoul(str, &ptr, base); - if (ptr == str) { - option_error("invalid numeric parameter '%s' for %s option", - str, current_option); - return 0; - } - return 1; -} - - -/* - * int_option - like number_option, but valp is int *, - * the base is assumed to be 0, and *valp is not changed - * if there is an error. - */ -int -int_option(str, valp) - char *str; - int *valp; -{ - u_int32_t v; - - if (!number_option(str, &v, 0)) - return 0; - *valp = (int) v; - return 1; -} - - -/* - * The following procedures parse options. - */ - -/* - * readfile - take commands from a file. - */ -static int -readfile(argv) - char **argv; -{ - return options_from_file(*argv, 1, 1, privileged_option); -} - -/* - * callfile - take commands from /etc/ppp/peers/<name>. - * Name may not contain /../, start with / or ../, or end in /.. - */ -static int -callfile(argv) - char **argv; -{ - char *fname, *arg, *p; - int l, ok; - - arg = *argv; - ok = 1; - if (arg[0] == '/' || arg[0] == 0) - ok = 0; - else { - for (p = arg; *p != 0; ) { - if (p[0] == '.' && p[1] == '.' && (p[2] == '/' || p[2] == 0)) { - ok = 0; - break; - } - while (*p != '/' && *p != 0) - ++p; - if (*p == '/') - ++p; - } - } - if (!ok) { - option_error("call option value may not contain .. or start with /"); - return 0; - } - - l = strlen(arg) + strlen(_PATH_PEERFILES) + 1; - if ((fname = (char *) malloc(l)) == NULL) - novm("call file name"); - slprintf(fname, l, "%s%s", _PATH_PEERFILES, arg); - - ok = options_from_file(fname, 1, 1, 1); - - free(fname); - return ok; -} - -#ifdef PPP_FILTER -/* - * setpassfilter - Set the pass filter for packets - */ -static int -setpassfilter(argv) - char **argv; -{ - pc.linktype = DLT_PPP; - pc.snapshot = PPP_HDRLEN; - - if (pcap_compile(&pc, &pass_filter, *argv, 1, netmask) == 0) - return 1; - option_error("error in pass-filter expression: %s\n", pcap_geterr(&pc)); - return 0; -} - -/* - * setactivefilter - Set the active filter for packets - */ -static int -setactivefilter(argv) - char **argv; -{ - pc.linktype = DLT_PPP; - pc.snapshot = PPP_HDRLEN; - - if (pcap_compile(&pc, &active_filter, *argv, 1, netmask) == 0) - return 1; - option_error("error in active-filter expression: %s\n", pcap_geterr(&pc)); - return 0; -} -#endif - -/* - * setdomain - Set domain name to append to hostname - */ -static int -setdomain(argv) - char **argv; -{ - gethostname(hostname, MAXNAMELEN); - if (**argv != 0) { - if (**argv != '.') - strncat(hostname, ".", MAXNAMELEN - strlen(hostname)); - domain = hostname + strlen(hostname); - strncat(hostname, *argv, MAXNAMELEN - strlen(hostname)); - } - hostname[MAXNAMELEN-1] = 0; - return (1); -} - - -static int -setlogfile(argv) - char **argv; -{ - int fd, err; - - if (!privileged_option) - seteuid(getuid()); - fd = open(*argv, O_WRONLY | O_APPEND | O_CREAT | O_EXCL, 0644); - if (fd < 0 && errno == EEXIST) - fd = open(*argv, O_WRONLY | O_APPEND); - err = errno; - if (!privileged_option) - seteuid(0); - if (fd < 0) { - errno = err; - option_error("Can't open log file %s: %m", *argv); - return 0; - } - strlcpy(logfile_name, *argv, sizeof(logfile_name)); - if (logfile_fd >= 0) - close(logfile_fd); - logfile_fd = fd; - log_to_fd = fd; - log_default = 0; - return 1; -} - -#ifdef PLUGIN -static int -loadplugin(argv) - char **argv; -{ - char *arg = *argv; - void *handle; - const char *err; - void (*init) __P((void)); - char *path = arg; - const char *vers; - - if (strchr(arg, '/') == 0) { - const char *base = _PATH_PLUGIN; - int l = strlen(base) + strlen(arg) + 2; - path = malloc(l); - if (path == 0) - novm("plugin file path"); - strlcpy(path, base, l); - strlcat(path, "/", l); - strlcat(path, arg, l); - } - handle = dlopen(path, RTLD_GLOBAL | RTLD_NOW); - if (handle == 0) { - err = dlerror(); - if (err != 0) - option_error("%s", err); - option_error("Couldn't load plugin %s", arg); - goto err; - } - init = (void (*)(void))dlsym(handle, "plugin_init"); - if (init == 0) { - option_error("%s has no initialization entry point", arg); - goto errclose; - } - vers = (const char *) dlsym(handle, "pppd_version"); - if (vers == 0) { - warn("Warning: plugin %s has no version information", arg); - } else if (strcmp(vers, VERSION) != 0) { - option_error("Plugin %s is for pppd version %s, this is %s", - vers, VERSION); - goto errclose; - } - info("Plugin %s loaded.", arg); - (*init)(); - return 1; - - errclose: - dlclose(handle); - err: - if (path != arg) - free(path); - return 0; -} -#endif /* PLUGIN */ diff --git a/mdk-stage1/ppp/pppd/patchlevel.h b/mdk-stage1/ppp/pppd/patchlevel.h deleted file mode 100644 index 2a2d816f1..000000000 --- a/mdk-stage1/ppp/pppd/patchlevel.h +++ /dev/null @@ -1,4 +0,0 @@ -/* $Id$ */ - -#define VERSION "2.4.1" -#define DATE "25 March 2001" diff --git a/mdk-stage1/ppp/pppd/pathnames.h b/mdk-stage1/ppp/pppd/pathnames.h deleted file mode 100644 index e80784567..000000000 --- a/mdk-stage1/ppp/pppd/pathnames.h +++ /dev/null @@ -1,25 +0,0 @@ -/* - * define path names - * - * $Id$ - */ - -#define _PATH_VARRUN "/var/run/" -#define _PATH_DEVNULL "/dev/null" -#define _ROOT_PATH - -#define _PATH_UPAPFILE _ROOT_PATH "/etc/ppp/pap-secrets" -#define _PATH_CHAPFILE _ROOT_PATH "/etc/ppp/chap-secrets" -#define _PATH_SYSOPTIONS _ROOT_PATH "/etc/ppp/options" -#define _PATH_IPUP _ROOT_PATH "/etc/ppp/ip-up" -#define _PATH_IPDOWN _ROOT_PATH "/etc/ppp/ip-down" -#define _PATH_AUTHUP _ROOT_PATH "/etc/ppp/auth-up" -#define _PATH_AUTHDOWN _ROOT_PATH "/etc/ppp/auth-down" -#define _PATH_TTYOPT _ROOT_PATH "/etc/ppp/options." -#define _PATH_CONNERRS _ROOT_PATH "/etc/ppp/connect-errors" -#define _PATH_PEERFILES _ROOT_PATH "/etc/ppp/peers/" -#define _PATH_RESOLV _ROOT_PATH "/etc/resolv.conf" - -#define _PATH_USEROPT ".ppprc" - -#define _PATH_PPPDB _ROOT_PATH _PATH_VARRUN "pppd.tdb" diff --git a/mdk-stage1/ppp/pppd/plugins/Makefile.linux b/mdk-stage1/ppp/pppd/plugins/Makefile.linux deleted file mode 100644 index a64256461..000000000 --- a/mdk-stage1/ppp/pppd/plugins/Makefile.linux +++ /dev/null @@ -1,19 +0,0 @@ -CC = gcc -CFLAGS = -g -O2 -I.. -I../../include -fPIC -LDFLAGS = -shared -INSTALL = install - -all: minconn.so passprompt.so - -minconn.so: minconn.c - $(CC) -o $@ $(LDFLAGS) $(CFLAGS) minconn.c - -passprompt.so: passprompt.c - $(CC) -o $@ $(LDFLAGS) $(CFLAGS) passprompt.c - -LIBDIR = /usr/lib/pppd - -install: minconn.so passprompt.so - version=`awk -F '"' '/VERSION/ { print $$2; }' ../patchlevel.h`; \ - $(INSTALL) -d $(LIBDIR)/$$version; \ - $(INSTALL) $? $(LIBDIR)/$$version
\ No newline at end of file diff --git a/mdk-stage1/ppp/pppd/plugins/Makefile.sol2 b/mdk-stage1/ppp/pppd/plugins/Makefile.sol2 deleted file mode 100644 index 8f4398258..000000000 --- a/mdk-stage1/ppp/pppd/plugins/Makefile.sol2 +++ /dev/null @@ -1,27 +0,0 @@ -# -# Makefile for plugins on Solaris 2 -# -# $Id$ -# - -include ../../svr4/Makedefs - -CFLAGS = -c -O -I.. -I../../include $(COPTS) -LDFLAGS = -G - -all: minconn.so - -minconn.so: minconn.o - ld -o $@ $(LDFLAGS) -h $@ minconn.o - -minconn.o: minconn.c - $(CC) $(CFLAGS) -c $? - -passprompt.so: passprompt.o - ld -o $@ $(LDFLAGS) -h $@ passprompt.o - -passprompt.o: passprompt.c - $(CC) $(CFLAGS) -c $? - -clean: - rm -f *.o *.so diff --git a/mdk-stage1/ppp/pppd/plugins/minconn.c b/mdk-stage1/ppp/pppd/plugins/minconn.c deleted file mode 100644 index 02ea34bf6..000000000 --- a/mdk-stage1/ppp/pppd/plugins/minconn.c +++ /dev/null @@ -1,46 +0,0 @@ -/* - * minconn.c - pppd plugin to implement a `minconnect' option. - * - * Copyright 1999 Paul Mackerras. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms. The name of the author - * may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ -#include <stddef.h> -#include <time.h> -#include "pppd.h" - -char pppd_version[] = VERSION; - -static int minconnect = 0; - -static option_t my_options[] = { - { "minconnect", o_int, &minconnect, - "Set minimum connect time before idle timeout applies" }, - { NULL } -}; - -static int my_get_idle(struct ppp_idle *idle) -{ - time_t t; - - if (idle == NULL) - return minconnect? minconnect: idle_time_limit; - t = idle->xmit_idle; - if (idle->recv_idle < t) - t = idle->recv_idle; - return idle_time_limit - t; -} - -void plugin_init(void) -{ - info("plugin_init"); - add_options(my_options); - idle_time_hook = my_get_idle; -} diff --git a/mdk-stage1/ppp/pppd/plugins/passprompt.c b/mdk-stage1/ppp/pppd/plugins/passprompt.c deleted file mode 100644 index 5e6a7f90b..000000000 --- a/mdk-stage1/ppp/pppd/plugins/passprompt.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - * passprompt.c - pppd plugin to invoke an external PAP password prompter - * - * Copyright 1999 Paul Mackerras, Alan Curry. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ -#include <errno.h> -#include <unistd.h> -#include <sys/wait.h> -#include <syslog.h> -#include "pppd.h" - -char pppd_version[] = VERSION; - -static char promptprog[PATH_MAX+1]; - -static option_t options[] = { - { "promptprog", o_string, promptprog, - "External PAP password prompting program", - OPT_STATIC, NULL, PATH_MAX }, - { NULL } -}; - -static int promptpass(char *user, char *passwd) -{ - int p[2]; - pid_t kid; - int readgood, wstat; - size_t red; - - if (promptprog[0] == 0 || access(promptprog, X_OK) < 0) - return -1; /* sorry, can't help */ - - if (!passwd) - return 1; - - if (pipe(p)) { - warn("Can't make a pipe for %s", promptprog); - return 0; - } - if ((kid = fork()) == (pid_t) -1) { - warn("Can't fork to run %s", promptprog); - close(p[0]); - close(p[1]); - return 0; - } - if (!kid) { - /* we are the child, exec the program */ - char *argv[4], fdstr[32]; - sys_close(); - closelog(); - close(p[0]); - seteuid(getuid()); - setegid(getgid()); - argv[0] = promptprog; - argv[1] = user; - argv[2] = remote_name; - sprintf(fdstr, "%d", p[1]); - argv[3] = fdstr; - argv[4] = 0; - execv(*argv, argv); - _exit(127); - } - - /* we are the parent, read the password from the pipe */ - close(p[1]); - readgood = 0; - do { - red = read(p[0], passwd + readgood, MAXSECRETLEN-1 - readgood); - if (red == 0) - break; - if (red < 0) { - error("Can't read secret from %s: %m", promptprog); - readgood = -1; - break; - } - readgood += red; - } while (readgood < MAXSECRETLEN - 1); - passwd[readgood] = 0; - close(p[0]); - - /* now wait for child to exit */ - while (waitpid(kid, &wstat, 0) < 0) { - if (errno != EINTR) { - warn("error waiting for %s: %m", promptprog); - break; - } - } - - if (readgood < 0) - return 0; - if (!WIFEXITED(wstat)) - warn("%s terminated abnormally", promptprog); - if (WEXITSTATUS(wstat)) - warn("%s exited with code %d", promptprog, WEXITSTATUS(status)); - - return 1; -} - -void plugin_init(void) -{ - add_options(options); - pap_passwd_hook = promptpass; -} diff --git a/mdk-stage1/ppp/pppd/ppp.pam b/mdk-stage1/ppp/pppd/ppp.pam deleted file mode 100644 index 475a4bc88..000000000 --- a/mdk-stage1/ppp/pppd/ppp.pam +++ /dev/null @@ -1,6 +0,0 @@ -#%PAM-1.0 -# Information for the PPPD process with the 'login' option. -auth required pam_nologin.so -auth required pam_unix.so -account required pam_unix.so -session required pam_unix.so
\ No newline at end of file diff --git a/mdk-stage1/ppp/pppd/pppd.8 b/mdk-stage1/ppp/pppd/pppd.8 deleted file mode 100644 index ab091cd83..000000000 --- a/mdk-stage1/ppp/pppd/pppd.8 +++ /dev/null @@ -1,1591 +0,0 @@ -.\" manual page [] for pppd 2.4 -.\" $Id$ -.\" SH section heading -.\" SS subsection heading -.\" LP paragraph -.\" IP indented paragraph -.\" TP hanging label -.TH PPPD 8 -.SH NAME -pppd \- Point to Point Protocol daemon -.SH SYNOPSIS -.B pppd -[ -.I tty_name -] [ -.I speed -] [ -.I options -] -.SH DESCRIPTION -.LP -The Point-to-Point Protocol (PPP) provides a method for transmitting -datagrams over serial point-to-point links. PPP -is composed of three parts: a method for encapsulating datagrams over -serial links, an extensible Link Control Protocol (LCP), and -a family of Network Control Protocols (NCP) for establishing -and configuring different network-layer protocols. -.LP -The encapsulation scheme is provided by driver code in the kernel. -Pppd provides the basic LCP, authentication support, and an NCP for -establishing and configuring the Internet Protocol (IP) (called the IP -Control Protocol, IPCP). -.SH FREQUENTLY USED OPTIONS -.TP -.I <tty_name> -Communicate over the named device. The string "/dev/" is prepended if -necessary. If no device name is given, or if the name of the terminal -connected to the standard input is given, pppd will use that terminal, -and will not fork to put itself in the background. A value for this -option from a privileged source cannot be overridden by a -non-privileged user. -.TP -.I <speed> -Set the baud rate to <speed> (a decimal number). On systems such as -4.4BSD and NetBSD, any speed can be specified. Other systems -(e.g. SunOS) allow only a limited set of speeds. -.TP -.B asyncmap \fI<map> -Set the async character map to <map>. This map describes which -control characters cannot be successfully received over the serial -line. Pppd will ask the peer to send these characters as a 2-byte -escape sequence. The argument is a 32 bit hex number with each bit -representing a character to escape. Bit 0 (00000001) represents the -character 0x00; bit 31 (80000000) represents the character 0x1f or ^_. -If multiple \fIasyncmap\fR options are given, the values are ORed -together. If no \fIasyncmap\fR option is given, no async character -map will be negotiated for the receive direction; the peer should then -escape \fIall\fR control characters. To escape transmitted -characters, use the \fIescape\fR option. -.TP -.B auth -Require the peer to authenticate itself before allowing network -packets to be sent or received. This option is the default if the -system has a default route. If neither this option nor the -\fInoauth\fR option is specified, pppd will only allow the peer to use -IP addresses to which the system does not already have a route. -.TP -.B call \fIname -Read options from the file /etc/ppp/peers/\fIname\fR. This file may -contain privileged options, such as \fInoauth\fR, even if pppd -is not being run by root. The \fIname\fR string may not begin with / -or include .. as a pathname component. The format of the options file -is described below. -.TP -.B connect \fIscript -Use the executable or shell command specified by \fIscript\fR to set -up the serial line. This script would typically use the chat(8) -program to dial the modem and start the remote ppp session. A value -for this option from a privileged source cannot be overridden by a -non-privileged user. -.TP -.B crtscts -Use hardware flow control (i.e. RTS/CTS) to control the flow of -data on the serial port. If neither the \fIcrtscts\fR, the -\fInocrtscts\fR, the \fIcdtrcts\fR nor the \fInocdtrcts\fR option -is given, the hardware flow control setting for the serial port is -left unchanged. -Some serial ports (such as Macintosh serial ports) lack a true -RTS output. Such serial ports use this mode to implement -unidirectional flow control. The serial port will -suspend transmission when requested by the modem (via CTS) -but will be unable to request the modem stop sending to the -computer. This mode retains the ability to use DTR as -a modem control line. -.TP -.B defaultroute -Add a default route to the system routing tables, using the peer as -the gateway, when IPCP negotiation is successfully completed. -This entry is removed when the PPP connection is broken. This option -is privileged if the \fInodefaultroute\fR option has been specified. -.TP -.B disconnect \fIscript -Run the executable or shell command specified by \fIscript\fR after -pppd has terminated the link. This script could, for example, issue -commands to the modem to cause it to hang up if hardware modem control -signals were not available. The disconnect script is not run if the -modem has already hung up. A value for this option from a privileged -source cannot be overridden by a non-privileged user. -.TP -.B escape \fIxx,yy,... -Specifies that certain characters should be escaped on transmission -(regardless of whether the peer requests them to be escaped with its -async control character map). The characters to be escaped are -specified as a list of hex numbers separated by commas. Note that -almost any character can be specified for the \fIescape\fR option, -unlike the \fIasyncmap\fR option which only allows control characters -to be specified. The characters which may not be escaped are those -with hex values 0x20 - 0x3f or 0x5e. -.TP -.B file \fIname -Read options from file \fIname\fR (the format is described below). -The file must be readable by the user who has invoked pppd. -.TP -.B init \fIscript -Run the executable or shell command specified by \fIscript\fR to -initialize the serial line. This script would typically use the -chat(8) program to configure the modem to enable auto answer. A value -for this option from a privileged source cannot be overridden by a -non-privileged user. -.TP -.B lock -Specifies that pppd should create a UUCP-style lock file for the -serial device to ensure exclusive access to the device. -.TP -.B mru \fIn -Set the MRU [Maximum Receive Unit] value to \fIn\fR. Pppd -will ask the peer to send packets of no more than \fIn\fR bytes. The -minimum MRU value is 128. The default MRU value is 1500. A value of -296 is recommended for slow links (40 bytes for TCP/IP header + 256 -bytes of data). (Note that for IPv6 MRU must be at least 1280) -.TP -.B mtu \fIn -Set the MTU [Maximum Transmit Unit] value to \fIn\fR. Unless the -peer requests a smaller value via MRU negotiation, pppd will -request that the kernel networking code send data packets of no more -than \fIn\fR bytes through the PPP network interface. (Note that for -IPv6 MTU must be at least 1280) -.TP -.B passive -Enables the "passive" option in the LCP. With this option, pppd will -attempt to initiate a connection; if no reply is received from the -peer, pppd will then just wait passively for a valid LCP packet from -the peer, instead of exiting, as it would without this option. -.SH OPTIONS -.TP -.I <local_IP_address>\fB:\fI<remote_IP_address> -Set the local and/or remote interface IP addresses. Either one may be -omitted. The IP addresses can be specified with a host name or in -decimal dot notation (e.g. 150.234.56.78). The default local -address is the (first) IP address of the system (unless the -\fInoipdefault\fR -option is given). The remote address will be obtained from the peer -if not specified in any option. Thus, in simple cases, this option is -not required. If a local and/or remote IP address is specified with -this option, pppd -will not accept a different value from the peer in the IPCP -negotiation, unless the \fIipcp-accept-local\fR and/or -\fIipcp-accept-remote\fR options are given, respectively. -.TP -.B ipv6 \fI<local_interface_identifier>\fR,\fI<remote_interface_identifier> -Set the local and/or remote 64-bit interface identifier. Either one may be -omitted. The identifier must be specified in standard ascii notation of -IPv6 addresses (e.g. ::dead:beef). If the -\fIipv6cp-use-ipaddr\fR -option is given, the local identifier is the local IPv4 address (see above). -On systems which supports a unique persistent id, such as EUI-48 derived -from the Ethernet MAC address, \fIipv6cp-use-persistent\fR option can be -used to replace the \fIipv6 <local>,<remote>\fR option. Otherwise the -identifier is randomized. -.TP -.B active-filter \fIfilter-expression -Specifies a packet filter to be applied to data packets to determine -which packets are to be regarded as link activity, and therefore reset -the idle timer, or cause the link to be brought up in demand-dialling -mode. This option is useful in conjunction with the -\fBidle\fR option if there are packets being sent or received -regularly over the link (for example, routing information packets) -which would otherwise prevent the link from ever appearing to be idle. -The \fIfilter-expression\fR syntax is as described for tcpdump(1), -except that qualifiers which are inappropriate for a PPP link, such as -\fBether\fR and \fBarp\fR, are not permitted. Generally the filter -expression should be enclosed in single-quotes to prevent whitespace -in the expression from being interpreted by the shell. This option -is currently only available under NetBSD, and then only -if both the kernel and pppd were compiled with PPP_FILTER defined. -.TP -.B allow-ip \fIaddress(es) -Allow peers to use the given IP address or subnet without -authenticating themselves. The parameter is parsed as for each -element of the list of allowed IP addresses in the secrets files (see -the AUTHENTICATION section below). -.TP -.B bsdcomp \fInr,nt -Request that the peer compress packets that it sends, using the -BSD-Compress scheme, with a maximum code size of \fInr\fR bits, and -agree to compress packets sent to the peer with a maximum code size of -\fInt\fR bits. If \fInt\fR is not specified, it defaults to the value -given for \fInr\fR. Values in the range 9 to 15 may be used for -\fInr\fR and \fInt\fR; larger values give better compression but -consume more kernel memory for compression dictionaries. -Alternatively, a value of 0 for \fInr\fR or \fInt\fR disables -compression in the corresponding direction. Use \fInobsdcomp\fR or -\fIbsdcomp 0\fR to disable BSD-Compress compression entirely. -.TP -.B cdtrcts -Use a non-standard hardware flow control (i.e. DTR/CTS) to control -the flow of data on the serial port. If neither the \fIcrtscts\fR, -the \fInocrtscts\fR, the \fIcdtrcts\fR nor the \fInocdtrcts\fR -option is given, the hardware flow control setting for the serial -port is left unchanged. -Some serial ports (such as Macintosh serial ports) lack a true -RTS output. Such serial ports use this mode to implement true -bi-directional flow control. The sacrifice is that this flow -control mode does not permit using DTR as a modem control line. -.TP -.B chap-interval \fIn -If this option is given, pppd will rechallenge the peer every \fIn\fR -seconds. -.TP -.B chap-max-challenge \fIn -Set the maximum number of CHAP challenge transmissions to \fIn\fR -(default 10). -.TP -.B chap-restart \fIn -Set the CHAP restart interval (retransmission timeout for challenges) -to \fIn\fR seconds (default 3). -.TP -.B connect-delay \fIn -Wait for up \fIn\fR milliseconds after the connect script finishes for -a valid PPP packet from the peer. At the end of this time, or when a -valid PPP packet is received from the peer, pppd will commence -negotiation by sending its first LCP packet. The default value is -1000 (1 second). This wait period only applies if the \fBconnect\fR -or \fBpty\fR option is used. -.TP -.B debug -Enables connection debugging facilities. -If this option is given, pppd will log the contents of all -control packets sent or received in a readable form. The packets are -logged through syslog with facility \fIdaemon\fR and level -\fIdebug\fR. This information can be directed to a file by setting up -/etc/syslog.conf appropriately (see syslog.conf(5)). -.TP -.B default-asyncmap -Disable asyncmap negotiation, forcing all control characters to be -escaped for both the transmit and the receive direction. -.TP -.B default-mru -Disable MRU [Maximum Receive Unit] negotiation. With this option, -pppd will use the default MRU value of 1500 bytes for both the -transmit and receive direction. -.TP -.B deflate \fInr,nt -Request that the peer compress packets that it sends, using the -Deflate scheme, with a maximum window size of \fI2**nr\fR bytes, and -agree to compress packets sent to the peer with a maximum window size -of \fI2**nt\fR bytes. If \fInt\fR is not specified, it defaults to -the value given for \fInr\fR. Values in the range 9 to 15 may be used -for \fInr\fR and \fInt\fR; larger values give better compression but -consume more kernel memory for compression dictionaries. -Alternatively, a value of 0 for \fInr\fR or \fInt\fR disables -compression in the corresponding direction. Use \fInodeflate\fR or -\fIdeflate 0\fR to disable Deflate compression entirely. (Note: pppd -requests Deflate compression in preference to BSD-Compress if the peer -can do either.) -.TP -.B demand -Initiate the link only on demand, i.e. when data traffic is present. -With this option, the remote IP address must be specified by the user -on the command line or in an options file. Pppd will initially -configure the interface and enable it for IP traffic without -connecting to the peer. When traffic is available, pppd will -connect to the peer and perform negotiation, authentication, etc. -When this is completed, pppd will commence passing data packets -(i.e., IP packets) across the link. - -The \fIdemand\fR option implies the \fIpersist\fR option. If this -behaviour is not desired, use the \fInopersist\fR option after the -\fIdemand\fR option. The \fIidle\fR and \fIholdoff\fR -options are also useful in conjuction with the \fIdemand\fR option. -.TP -.B domain \fId -Append the domain name \fId\fR to the local host name for authentication -purposes. For example, if gethostname() returns the name porsche, but -the fully qualified domain name is porsche.Quotron.COM, you could -specify \fIdomain Quotron.COM\fR. Pppd would then use the name -\fIporsche.Quotron.COM\fR for looking up secrets in the secrets file, -and as the default name to send to the peer when authenticating itself -to the peer. This option is privileged. -.TP -.B dryrun -With the \fBdryrun\fR option, pppd will print out all the option -values which have been set and then exit, after parsing the command -line and options files and checking the option values, but before -initiating the link. The option values are logged at level info, and -also printed to standard output unless the device on standard output -is the device that pppd would be using to communicate with the peer. -.TP -.B dump -With the \fBdump\fR option, pppd will print out all the option values -which have been set. This option is like the \fBdryrun\fR option -except that pppd proceeds as normal rather than exiting. -.TP -.B endpoint \fI<epdisc> -Sets the endpoint discriminator sent by the local machine to the peer -during multilink negotiation to \fI<epdisc>\fR. The default is to use -the MAC address of the first ethernet interface on the system, if any, -otherwise the IPv4 address corresponding to the hostname, if any, -provided it is not in the multicast or locally-assigned IP address -ranges, or the localhost address. The endpoint discriminator can be -the string \fBnull\fR or of the form \fItype\fR:\fIvalue\fR, where -type is a decimal number or one of the strings \fBlocal\fR, \fBIP\fR, -\fBMAC\fR, \fBmagic\fR, or \fBphone\fR. The value is an IP address in -dotted-decimal notation for the \fBIP\fR type, or a string of bytes in -hexadecimal, separated by periods or colons for the other types. For -the MAC type, the value may also be the name of an ethernet or similar -network interface. This option is currently only available under -Linux. -.TP -.B hide-password -When logging the contents of PAP packets, this option causes pppd to -exclude the password string from the log. This is the default. -.TP -.B holdoff \fIn -Specifies how many seconds to wait before re-initiating the link after -it terminates. This option only has any effect if the \fIpersist\fR -or \fIdemand\fR option is used. The holdoff period is not applied if -the link was terminated because it was idle. -.TP -.B idle \fIn -Specifies that pppd should disconnect if the link is idle for \fIn\fR -seconds. The link is idle when no data packets (i.e. IP packets) are -being sent or received. Note: it is not advisable to use this option -with the \fIpersist\fR option without the \fIdemand\fR option. -If the \fBactive-filter\fR -option is given, data packets which are rejected by the specified -activity filter also count as the link being idle. -.TP -.B ipcp-accept-local -With this option, pppd will accept the peer's idea of our local IP -address, even if the local IP address was specified in an option. -.TP -.B ipcp-accept-remote -With this option, pppd will accept the peer's idea of its (remote) IP -address, even if the remote IP address was specified in an option. -.TP -.B ipcp-max-configure \fIn -Set the maximum number of IPCP configure-request transmissions to -\fIn\fR (default 10). -.TP -.B ipcp-max-failure \fIn -Set the maximum number of IPCP configure-NAKs returned before starting -to send configure-Rejects instead to \fIn\fR (default 10). -.TP -.B ipcp-max-terminate \fIn -Set the maximum number of IPCP terminate-request transmissions to -\fIn\fR (default 3). -.TP -.B ipcp-restart \fIn -Set the IPCP restart interval (retransmission timeout) to \fIn\fR -seconds (default 3). -.TP -.B ipparam \fIstring -Provides an extra parameter to the ip-up and ip-down scripts. If this -option is given, the \fIstring\fR supplied is given as the 6th -parameter to those scripts. -.TP -.B ipv6cp-max-configure \fIn -Set the maximum number of IPv6CP configure-request transmissions to -\fIn\fR (default 10). -.TP -.B ipv6cp-max-failure \fIn -Set the maximum number of IPv6CP configure-NAKs returned before starting -to send configure-Rejects instead to \fIn\fR (default 10). -.TP -.B ipv6cp-max-terminate \fIn -Set the maximum number of IPv6CP terminate-request transmissions to -\fIn\fR (default 3). -.TP -.B ipv6cp-restart \fIn -Set the IPv6CP restart interval (retransmission timeout) to \fIn\fR -seconds (default 3). -.TP -.B ipx -Enable the IPXCP and IPX protocols. This option is presently only -supported under Linux, and only if your kernel has been configured to -include IPX support. -.TP -.B ipx-network \fIn -Set the IPX network number in the IPXCP configure request frame to -\fIn\fR, a hexadecimal number (without a leading 0x). There is no -valid default. If this option is not specified, the network number is -obtained from the peer. If the peer does not have the network number, -the IPX protocol will not be started. -.TP -.B ipx-node \fIn\fB:\fIm -Set the IPX node numbers. The two node numbers are separated from each -other with a colon character. The first number \fIn\fR is the local -node number. The second number \fIm\fR is the peer's node number. Each -node number is a hexadecimal number, at most 10 digits long. The node -numbers on the ipx-network must be unique. There is no valid -default. If this option is not specified then the node numbers are -obtained from the peer. -.TP -.B ipx-router-name \fI<string> -Set the name of the router. This is a string and is sent to the peer -as information data. -.TP -.B ipx-routing \fIn -Set the routing protocol to be received by this option. More than one -instance of \fIipx-routing\fR may be specified. The '\fInone\fR' -option (0) may be specified as the only instance of ipx-routing. The -values may be \fI0\fR for \fINONE\fR, \fI2\fR for \fIRIP/SAP\fR, and -\fI4\fR for \fINLSP\fR. -.TP -.B ipxcp-accept-local -Accept the peer's NAK for the node number specified in the ipx-node -option. If a node number was specified, and non-zero, the default is -to insist that the value be used. If you include this option then you -will permit the peer to override the entry of the node number. -.TP -.B ipxcp-accept-network -Accept the peer's NAK for the network number specified in the -ipx-network option. If a network number was specified, and non-zero, the -default is to insist that the value be used. If you include this -option then you will permit the peer to override the entry of the node -number. -.TP -.B ipxcp-accept-remote -Use the peer's network number specified in the configure request -frame. If a node number was specified for the peer and this option was -not specified, the peer will be forced to use the value which you have -specified. -.TP -.B ipxcp-max-configure \fIn -Set the maximum number of IPXCP configure request frames which the -system will send to \fIn\fR. The default is 10. -.TP -.B ipxcp-max-failure \fIn -Set the maximum number of IPXCP NAK frames which the local system will -send before it rejects the options. The default value is 3. -.TP -.B ipxcp-max-terminate \fIn -Set the maximum nuber of IPXCP terminate request frames before the -local system considers that the peer is not listening to them. The -default value is 3. -.TP -.B kdebug \fIn -Enable debugging code in the kernel-level PPP driver. The argument -values depend on the specific kernel driver, but in general a value of -1 will enable general kernel debug messages. (Note that these -messages are usually only useful for debugging the kernel driver -itself.) For the Linux 2.2.x kernel driver, the value is a sum of -bits: 1 to -enable general debug messages, 2 to request that the contents of -received packets be printed, and 4 to request that the contents of -transmitted packets be printed. On most systems, messages printed by -the kernel are logged by syslog(1) to a file as directed in the -/etc/syslog.conf configuration file. -.TP -.B ktune -Enables pppd to alter kernel settings as appropriate. Under Linux, -pppd will enable IP forwarding (i.e. set /proc/sys/net/ipv4/ip_forward -to 1) if the \fIproxyarp\fR option is used, and will enable the -dynamic IP address option (i.e. set /proc/sys/net/ipv4/ip_dynaddr to -1) in demand mode if the local address changes. -.TP -.B lcp-echo-failure \fIn -If this option is given, pppd will presume the peer to be dead -if \fIn\fR LCP echo-requests are sent without receiving a valid LCP -echo-reply. If this happens, pppd will terminate the -connection. Use of this option requires a non-zero value for the -\fIlcp-echo-interval\fR parameter. This option can be used to enable -pppd to terminate after the physical connection has been broken -(e.g., the modem has hung up) in situations where no hardware modem -control lines are available. -.TP -.B lcp-echo-interval \fIn -If this option is given, pppd will send an LCP echo-request frame to -the peer every \fIn\fR seconds. Normally the peer should respond to -the echo-request by sending an echo-reply. This option can be used -with the \fIlcp-echo-failure\fR option to detect that the peer is no -longer connected. -.TP -.B lcp-max-configure \fIn -Set the maximum number of LCP configure-request transmissions to -\fIn\fR (default 10). -.TP -.B lcp-max-failure \fIn -Set the maximum number of LCP configure-NAKs returned before starting -to send configure-Rejects instead to \fIn\fR (default 10). -.TP -.B lcp-max-terminate \fIn -Set the maximum number of LCP terminate-request transmissions to -\fIn\fR (default 3). -.TP -.B lcp-restart \fIn -Set the LCP restart interval (retransmission timeout) to \fIn\fR -seconds (default 3). -.TP -.B linkname \fIname\fR -Sets the logical name of the link to \fIname\fR. Pppd will create a -file named \fBppp-\fIname\fB.pid\fR in /var/run (or /etc/ppp on some -systems) containing its process ID. This can be useful in determining -which instance of pppd is responsible for the link to a given peer -system. This is a privileged option. -.TP -.B local -Don't use the modem control lines. With this option, pppd will ignore -the state of the CD (Carrier Detect) signal from the modem and will -not change the state of the DTR (Data Terminal Ready) signal. -.TP -.B logfd \fIn -Send log messages to file descriptor \fIn\fR. Pppd will send log -messages to at most one file or file descriptor (as well as sending -the log messages to syslog), so this option and the \fBlogfile\fR -option are mutually exclusive. The default is for pppd to send log -messages to stdout (file descriptor 1), unless the serial port is -already open on stdout. -.TP -.B logfile \fIfilename -Append log messages to the file \fIfilename\fR (as well as sending the -log messages to syslog). The file is opened with the privileges of -the user who invoked pppd, in append mode. -.TP -.B login -Use the system password database for authenticating the peer using -PAP, and record the user in the system wtmp file. Note that the peer -must have an entry in the /etc/ppp/pap-secrets file as well as the -system password database to be allowed access. -.TP -.B maxconnect \fIn -Terminate the connection when it has been available for network -traffic for \fIn\fR seconds (i.e. \fIn\fR seconds after the first -network control protocol comes up). -.TP -.B maxfail \fIn -Terminate after \fIn\fR consecutive failed connection attempts. A -value of 0 means no limit. The default value is 10. -.TP -.B modem -Use the modem control lines. This option is the default. With this -option, pppd will wait for the CD (Carrier Detect) signal from the -modem to be asserted when opening the serial device (unless a connect -script is specified), and it will drop the DTR (Data Terminal Ready) -signal briefly when the connection is terminated and before executing -the connect script. On Ultrix, this option implies hardware flow -control, as for the \fIcrtscts\fR option. -.TP -.B mp -Enables the use of PPP multilink; this is an alias for the `multilink' -option. This option is currently only available under Linux. -.TP -.B mpshortseq -Enables the use of short (12-bit) sequence numbers in multilink -headers, as opposed to 24-bit sequence numbers. This option is only -available under Linux, and only has any effect if multilink is -enabled (see the multilink option). -.TP -.B mrru \fIn -Sets the Maximum Reconstructed Receive Unit to \fIn\fR. The MRRU is -the maximum size for a received packet on a multilink bundle, and is -analogous to the MRU for the individual links. This option is -currently only available under Linux, and only has any effect if -multilink is enabled (see the multilink option). -.TP -.B ms-dns \fI<addr> -If pppd is acting as a server for Microsoft Windows clients, this -option allows pppd to supply one or two DNS (Domain Name Server) -addresses to the clients. The first instance of this option specifies -the primary DNS address; the second instance (if given) specifies the -secondary DNS address. (This option was present in some older -versions of pppd under the name \fBdns-addr\fR.) -.TP -.B ms-wins \fI<addr> -If pppd is acting as a server for Microsoft Windows or "Samba" -clients, this option allows pppd to supply one or two WINS (Windows -Internet Name Services) server addresses to the clients. The first -instance of this option specifies the primary WINS address; the second -instance (if given) specifies the secondary WINS address. -.TP -.B multilink -Enables the use of the PPP multilink protocol. If the peer also -supports multilink, then this link can become part of a bundle between -the local system and the peer. If there is an existing bundle to the -peer, pppd will join this link to that bundle, otherwise pppd will -create a new bundle. See the MULTILINK section below. This option is -currently only available under Linux. -.TP -.B name \fIname -Set the name of the local system for authentication purposes to -\fIname\fR. This is a privileged option. With this option, pppd will -use lines in the secrets files which have \fIname\fR as the second -field when looking for a secret to use in authenticating the peer. In -addition, unless overridden with the \fIuser\fR option, \fIname\fR -will be used as the name to send to the peer when authenticating the -local system to the peer. (Note that pppd does not append the domain -name to \fIname\fR.) -.TP -.B netmask \fIn -Set the interface netmask to \fIn\fR, a 32 bit netmask in "decimal dot" -notation (e.g. 255.255.255.0). If this option is given, the value -specified is ORed with the default netmask. The default netmask is -chosen based on the negotiated remote IP address; it is the -appropriate network mask for the class of the remote IP address, ORed -with the netmasks for any non point-to-point network interfaces in the -system which are on the same network. (Note: on some platforms, pppd -will always use 255.255.255.255 for the netmask, if that is the only -appropriate value for a point-to-point interface.) -.TP -.B noaccomp -Disable Address/Control compression in both directions (send and -receive). -.TP -.B noauth -Do not require the peer to authenticate itself. This option is -privileged. -.TP -.B nobsdcomp -Disables BSD-Compress compression; \fBpppd\fR will not request or -agree to compress packets using the BSD-Compress scheme. -.TP -.B noccp -Disable CCP (Compression Control Protocol) negotiation. This option -should only be required if the peer is buggy and gets confused by -requests from pppd for CCP negotiation. -.TP -.B nocrtscts -Disable hardware flow control (i.e. RTS/CTS) on the serial port. -If neither the \fIcrtscts\fR nor the \fInocrtscts\fR nor the -\fIcdtrcts\fR nor the \fInocdtrcts\fR option is given, the hardware -flow control setting for the serial port is left unchanged. -.TP -.B nocdtrcts -This option is a synonym for \fInocrtscts\fR. Either of these options will -disable both forms of hardware flow control. -.TP -.B nodefaultroute -Disable the \fIdefaultroute\fR option. The system administrator who -wishes to prevent users from creating default routes with pppd -can do so by placing this option in the /etc/ppp/options file. -.TP -.B nodeflate -Disables Deflate compression; pppd will not request or agree to -compress packets using the Deflate scheme. -.TP -.B nodetach -Don't detach from the controlling terminal. Without this option, if a -serial device other than the terminal on the standard input is -specified, pppd will fork to become a background process. -.TP -.B noendpoint -Disables pppd from sending an endpoint discriminator to the peer or -accepting one from the peer (see the MULTILINK section below). This -option should only be required if the peer is buggy. -.TP -.B noip -Disable IPCP negotiation and IP communication. This option should -only be required if the peer is buggy and gets confused by requests -from pppd for IPCP negotiation. -.TP -.B noipv6 -Disable IPv6CP negotiation and IPv6 communication. This option should -only be required if the peer is buggy and gets confused by requests -from pppd for IPv6CP negotiation. -.TP -.B noipdefault -Disables the default behaviour when no local IP address is specified, -which is to determine (if possible) the local IP address from the -hostname. With this option, the peer will have to supply the local IP -address during IPCP negotiation (unless it specified explicitly on the -command line or in an options file). -.TP -.B noipx -Disable the IPXCP and IPX protocols. This option should only be -required if the peer is buggy and gets confused by requests from pppd -for IPXCP negotiation. -.TP -.B noktune -Opposite of the \fIktune\fR option; disables pppd from changing system -settings. -.TP -.B nolog -Do not send log messages to a file or file descriptor. This option -cancels the \fBlogfd\fR and \fBlogfile\fR options. -.TP -.B nomagic -Disable magic number negotiation. With this option, pppd cannot -detect a looped-back line. This option should only be needed if the -peer is buggy. -.TP -.B nomp -Disables the use of PPP multilink. This option is currently only -available under Linux. -.TP -.B nompshortseq -Disables the use of short (12-bit) sequence numbers in the PPP -multilink protocol, forcing the use of 24-bit sequence numbers. This -option is currently only available under Linux, and only has any -effect if multilink is enabled. -.TP -.B nomultilink -Disables the use of PPP multilink. This option is currently only -available under Linux. -.TP -.B nopcomp -Disable protocol field compression negotiation in both the receive and -the transmit direction. -.TP -.B nopersist -Exit once a connection has been made and terminated. This is the -default unless the \fIpersist\fR or \fIdemand\fR option has been -specified. -.TP -.B nopredictor1 -Do not accept or agree to Predictor-1 compression. -.TP -.B noproxyarp -Disable the \fIproxyarp\fR option. The system administrator who -wishes to prevent users from creating proxy ARP entries with pppd can -do so by placing this option in the /etc/ppp/options file. -.TP -.B notty -Normally, pppd requires a terminal device. With this option, pppd -will allocate itself a pseudo-tty master/slave pair and use the slave -as its terminal device. Pppd will create a child process to act as a -`character shunt' to transfer characters between the pseudo-tty master -and its standard input and output. Thus pppd will transmit characters -on its standard output and receive characters on its standard input -even if they are not terminal devices. This option increases the -latency and CPU overhead of transferring data over the ppp interface -as all of the characters sent and received must flow through the -character shunt process. An explicit device name may not be given if -this option is used. -.TP -.B novj -Disable Van Jacobson style TCP/IP header compression in both the -transmit and the receive direction. -.TP -.B novjccomp -Disable the connection-ID compression option in Van Jacobson style -TCP/IP header compression. With this option, pppd will not omit the -connection-ID byte from Van Jacobson compressed TCP/IP headers, nor -ask the peer to do so. -.TP -.B papcrypt -Indicates that all secrets in the /etc/ppp/pap-secrets file which are -used for checking the identity of the peer are encrypted, and thus -pppd should not accept a password which, before encryption, is -identical to the secret from the /etc/ppp/pap-secrets file. -.TP -.B pap-max-authreq \fIn -Set the maximum number of PAP authenticate-request transmissions to -\fIn\fR (default 10). -.TP -.B pap-restart \fIn -Set the PAP restart interval (retransmission timeout) to \fIn\fR -seconds (default 3). -.TP -.B pap-timeout \fIn -Set the maximum time that pppd will wait for the peer to authenticate -itself with PAP to \fIn\fR seconds (0 means no limit). -.TP -.B pass-filter \fIfilter-expression -Specifies a packet filter to applied to data packets being sent or -received to determine which packets should be allowed to pass. -Packets which are rejected by the filter are silently discarded. This -option can be used to prevent specific network daemons (such as -routed) using up link bandwidth, or to provide a basic firewall -capability. -The \fIfilter-expression\fR syntax is as described for tcpdump(1), -except that qualifiers which are inappropriate for a PPP link, such as -\fBether\fR and \fBarp\fR, are not permitted. Generally the filter -expression should be enclosed in single-quotes to prevent whitespace -in the expression from being interpreted by the shell. Note that it -is possible to apply different constraints to incoming and outgoing -packets using the \fBinbound\fR and \fBoutbound\fR qualifiers. This -option is currently only available under NetBSD, and then only if both -the kernel and pppd were compiled with PPP_FILTER defined. -.TP -.B persist -Do not exit after a connection is terminated; instead try to reopen -the connection. -.TP -.B plugin \fIfilename -Load the shared library object file \fIfilename\fR as a plugin. This -is a privileged option. -.TP -.B predictor1 -Request that the peer compress frames that it sends using Predictor-1 -compression, and agree to compress transmitted frames with Predictor-1 -if requested. This option has no effect unless the kernel driver -supports Predictor-1 compression. -.TP -.B privgroup \fIgroup-name -Allows members of group \fIgroup-name\fR to use privileged options. -This is a privileged option. Use of this option requires care as -there is no guarantee that members of \fIgroup-name\fR cannot use pppd -to become root themselves. Consider it equivalent to putting the -members of \fIgroup-name\fR in the kmem or disk group. -.TP -.B proxyarp -Add an entry to this system's ARP [Address Resolution Protocol] table -with the IP address of the peer and the Ethernet address of this -system. This will have the effect of making the peer appear to other -systems to be on the local ethernet. -.TP -.B pty \fIscript -Specifies that the command \fIscript\fR is to be used to communicate -rather than a specific terminal device. Pppd will allocate itself a -pseudo-tty master/slave pair and use the slave as its terminal -device. The \fIscript\fR will be run in a child process with the -pseudo-tty master as its standard input and output. An explicit -device name may not be given if this option is used. (Note: if the -\fIrecord\fR option is used in conjuction with the \fIpty\fR option, -the child process will have pipes on its standard input and output.) -.TP -.B receive-all -With this option, pppd will accept all control characters from the -peer, including those marked in the receive asyncmap. Without this -option, pppd will discard those characters as specified in RFC1662. -This option should only be needed if the peer is buggy. -.TP -.B record \fIfilename -Specifies that pppd should record all characters sent and received to -a file named \fIfilename\fR. This file is opened in append mode, -using the user's user-ID and permissions. This option is implemented -using a pseudo-tty and a process to transfer characters between the -pseudo-tty and the real serial device, so it will increase the latency -and CPU overhead of transferring data over the ppp interface. The -characters are stored in a tagged format with timestamps, which can be -displayed in readable form using the pppdump(8) program. -.TP -.B remotename \fIname -Set the assumed name of the remote system for authentication purposes -to \fIname\fR. -.TP -.B refuse-chap -With this option, pppd will not agree to authenticate itself to the -peer using CHAP. -.TP -.B refuse-pap -With this option, pppd will not agree to authenticate itself to the -peer using PAP. -.TP -.B require-chap -Require the peer to authenticate itself using CHAP [Challenge -Handshake Authentication Protocol] authentication. -.TP -.B require-pap -Require the peer to authenticate itself using PAP [Password -Authentication Protocol] authentication. -.TP -.B show-password -When logging the contents of PAP packets, this option causes pppd to -show the password string in the log message. -.TP -.B silent -With this option, pppd will not transmit LCP packets to initiate a -connection until a valid LCP packet is received from the peer (as for -the `passive' option with ancient versions of pppd). -.TP -.B sync -Use synchronous HDLC serial encoding instead of asynchronous. -The device used by pppd with this option must have sync support. -Currently supports Microgate SyncLink adapters -under Linux and FreeBSD 2.2.8 and later. -.TP -.B updetach -With this option, pppd will detach from its controlling terminal once -it has successfully established the ppp connection (to the point where -the first network control protocol, usually the IP control protocol, -has come up). -.TP -.B usehostname -Enforce the use of the hostname (with domain name appended, if given) -as the name of the local system for authentication purposes (overrides -the \fIname\fR option). This option is not normally needed since the -\fIname\fR option is privileged. -.TP -.B usepeerdns -Ask the peer for up to 2 DNS server addresses. The addresses supplied -by the peer (if any) are passed to the /etc/ppp/ip-up script in the -environment variables DNS1 and DNS2. In addition, pppd will create an -/etc/ppp/resolv.conf file containing one or two nameserver lines with -the address(es) supplied by the peer. -.TP -.B user \fIname -Sets the name used for authenticating the local system to the peer to -\fIname\fR. -.TP -.B vj-max-slots \fIn -Sets the number of connection slots to be used by the Van Jacobson -TCP/IP header compression and decompression code to \fIn\fR, which -must be between 2 and 16 (inclusive). -.TP -.B welcome \fIscript -Run the executable or shell command specified by \fIscript\fR before -initiating PPP negotiation, after the connect script (if any) has -completed. A value for this option from a privileged source cannot be -overridden by a non-privileged user. -.TP -.B xonxoff -Use software flow control (i.e. XON/XOFF) to control the flow of data on -the serial port. -.SH OPTIONS FILES -Options can be taken from files as well as the command line. Pppd -reads options from the files /etc/ppp/options, ~/.ppprc and -/etc/ppp/options.\fIttyname\fR (in that order) before processing the -options on the command line. (In fact, the command-line options are -scanned to find the terminal name before the options.\fIttyname\fR -file is read.) In forming the name of the options.\fIttyname\fR file, -the initial /dev/ is removed from the terminal name, and any remaining -/ characters are replaced with dots. -.PP -An options file is parsed into a series of words, delimited by -whitespace. Whitespace can be included in a word by enclosing the -word in double-quotes ("). A backslash (\\) quotes the following character. -A hash (#) starts a comment, which continues until the end of the -line. There is no restriction on using the \fIfile\fR or \fIcall\fR -options within an options file. -.SH SECURITY -.I pppd -provides system administrators with sufficient access control that PPP -access to a server machine can be provided to legitimate users without -fear of compromising the security of the server or the network it's -on. This control is provided through restrictions on which IP -addresses the peer may use, based on its authenticated identity (if -any), and through restrictions on which options a non-privileged user -may use. Several of pppd's options are privileged, in particular -those which permit potentially insecure configurations; these options -are only accepted in files which are under the control of the system -administrator, or if pppd is being run by root. -.PP -The default behaviour of pppd is to allow an unauthenticated peer to -use a given IP address only if the system does not already have a -route to that IP address. For example, a system with a -permanent connection to the wider internet will normally have a -default route, and thus all peers will have to authenticate themselves -in order to set up a connection. On such a system, the \fIauth\fR -option is the default. On the other hand, a system where the -PPP link is the only connection to the internet will not normally have -a default route, so the peer will be able to use almost any IP address -without authenticating itself. -.PP -As indicated above, some security-sensitive options are privileged, -which means that they may not be used by an ordinary non-privileged -user running a setuid-root pppd, either on the command line, in the -user's ~/.ppprc file, or in an options file read using the \fIfile\fR -option. Privileged options may be used in /etc/ppp/options file or in -an options file read using the \fIcall\fR option. If pppd is being -run by the root user, privileged options can be used without -restriction. -.PP -When opening the device, pppd uses either the invoking user's user ID -or the root UID (that is, 0), depending on whether the device name was -specified by the user or the system administrator. If the device name -comes from a privileged source, that is, /etc/ppp/options or an -options file read using the \fIcall\fR option, pppd uses full root -privileges when opening the device. Thus, by creating an appropriate -file under /etc/ppp/peers, the system administrator can allow users to -establish a ppp connection via a device which they would not normally -have permission to access. Otherwise pppd uses the invoking user's -real UID when opening the device. -.SH AUTHENTICATION -Authentication is the process whereby one peer convinces the other of -its identity. This involves the first peer sending its name to the -other, together with some kind of secret information which could only -come from the genuine authorized user of that name. In such an -exchange, we will call the first peer the "client" and the other the -"server". The client has a name by which it identifies itself to the -server, and the server also has a name by which it identifies itself -to the client. Generally the genuine client shares some secret (or -password) with the server, and authenticates itself by proving that it -knows that secret. Very often, the names used for authentication -correspond to the internet hostnames of the peers, but this is not -essential. -.LP -At present, pppd supports two authentication protocols: the Password -Authentication Protocol (PAP) and the Challenge Handshake -Authentication Protocol (CHAP). PAP involves the client sending its -name and a cleartext password to the server to authenticate itself. -In contrast, the server initiates the CHAP authentication exchange by -sending a challenge to the client (the challenge packet includes the -server's name). The client must respond with a response which -includes its name plus a hash value derived from the shared secret and -the challenge, in order to prove that it knows the secret. -.LP -The PPP protocol, being symmetrical, allows both peers to require the -other to authenticate itself. In that case, two separate and -independent authentication exchanges will occur. The two exchanges -could use different authentication protocols, and in principle, -different names could be used in the two exchanges. -.LP -The default behaviour of pppd is to agree to authenticate if -requested, and to not require authentication from the peer. However, -pppd will not agree to authenticate itself with a particular protocol -if it has no secrets which could be used to do so. -.LP -Pppd stores secrets for use in authentication in secrets -files (/etc/ppp/pap-secrets for PAP, /etc/ppp/chap-secrets for CHAP). -Both secrets files have the same format. The secrets files can -contain secrets for pppd to use in authenticating itself to other -systems, as well as secrets for pppd to use when authenticating other -systems to itself. -.LP -Each line in a secrets file contains one secret. A given secret is -specific to a particular combination of client and server - it can -only be used by that client to authenticate itself to that server. -Thus each line in a secrets file has at least 3 fields: the name of -the client, the name of the server, and the secret. These fields may -be followed by a list of the IP addresses that the specified client -may use when connecting to the specified server. -.LP -A secrets file is parsed into words as for a options file, so the -client name, server name and secrets fields must each be one word, -with any embedded spaces or other special characters quoted or -escaped. Note that case is significant in the client and server names -and in the secret. -.LP -If the secret starts with an `@', what follows is assumed to be the -name of a file from which to read the secret. A "*" as the client or -server name matches any name. When selecting a secret, pppd takes the -best match, i.e. the match with the fewest wildcards. -.LP -Any following words on the same line are taken to be a list of -acceptable IP addresses for that client. If there are only 3 words on -the line, or if the first word is "-", then all IP addresses are -disallowed. To allow any address, use "*". A word starting with "!" -indicates that the specified address is \fInot\fR acceptable. An -address may be followed by "/" and a number \fIn\fR, to indicate a -whole subnet, i.e. all addresses which have the same value in the most -significant \fIn\fR bits. In this form, the address may be followed -by a plus sign ("+") to indicate that one address from the subnet is -authorized, based on the ppp network interface unit number in use. -In this case, the host part of the address will be set to the unit -number plus one. -.LP -Thus a secrets file contains both secrets for use in authenticating -other hosts, plus secrets which we use for authenticating ourselves to -others. When pppd is authenticating the peer (checking the peer's -identity), it chooses a secret with the peer's name in the first -field and the name of the local system in the second field. The -name of the local system defaults to the hostname, with the domain -name appended if the \fIdomain\fR option is used. This default can be -overridden with the \fIname\fR option, except when the -\fIusehostname\fR option is used. -.LP -When pppd is choosing a secret to use in authenticating itself to the -peer, it first determines what name it is going to use to identify -itself to the peer. This name can be specified by the user with the -\fIuser\fR option. If this option is not used, the name defaults to -the name of the local system, determined as described in the previous -paragraph. Then pppd looks for a secret with this name in the first -field and the peer's name in the second field. Pppd will know the -name of the peer if CHAP authentication is being used, because the -peer will have sent it in the challenge packet. However, if PAP is being -used, pppd will have to determine the peer's name from the options -specified by the user. The user can specify the peer's name directly -with the \fIremotename\fR option. Otherwise, if the remote IP address -was specified by a name (rather than in numeric form), that name will -be used as the peer's name. Failing that, pppd will use the null -string as the peer's name. -.LP -When authenticating the peer with PAP, the supplied password is first -compared with the secret from the secrets file. If the password -doesn't match the secret, the password is encrypted using crypt() and -checked against the secret again. Thus secrets for authenticating the -peer can be stored in encrypted form if desired. If the -\fIpapcrypt\fR option is given, the first (unencrypted) comparison is -omitted, for better security. -.LP -Furthermore, if the \fIlogin\fR option was specified, the username and -password are also checked against the system password database. Thus, -the system administrator can set up the pap-secrets file to allow PPP -access only to certain users, and to restrict the set of IP addresses -that each user can use. Typically, when using the \fIlogin\fR option, -the secret in /etc/ppp/pap-secrets would be "", which will match any -password supplied by the peer. This avoids the need to have the same -secret in two places. -.LP -Authentication must be satisfactorily completed before IPCP (or any -other Network Control Protocol) can be started. If the peer is -required to authenticate itself, and fails to do so, pppd will -terminated the link (by closing LCP). If IPCP negotiates an -unacceptable IP address for the remote host, IPCP will be closed. IP -packets can only be sent or received when IPCP is open. -.LP -In some cases it is desirable to allow some hosts which can't -authenticate themselves to connect and use one of a restricted set of -IP addresses, even when the local host generally requires -authentication. If the peer refuses to authenticate itself when -requested, pppd takes that as equivalent to authenticating with PAP -using the empty string for the username and password. Thus, by adding -a line to the pap-secrets file which specifies the empty string for -the client and password, it is possible to allow restricted access to -hosts which refuse to authenticate themselves. -.SH ROUTING -.LP -When IPCP negotiation is completed successfully, pppd will inform the -kernel of the local and remote IP addresses for the ppp interface. -This is sufficient to create a host route to the remote end of the -link, which will enable the peers to exchange IP packets. -Communication with other machines generally requires further -modification to routing tables and/or ARP (Address Resolution -Protocol) tables. In most cases the \fIdefaultroute\fR and/or -\fIproxyarp\fR options are sufficient for this, but in some cases -further intervention is required. The /etc/ppp/ip-up script can be -used for this. -.LP -Sometimes it is desirable to add a default route through the remote -host, as in the case of a machine whose only connection to the -Internet is through the ppp interface. The \fIdefaultroute\fR option -causes pppd to create such a default route when IPCP comes up, and -delete it when the link is terminated. -.LP -In some cases it is desirable to use proxy ARP, for example on a -server machine connected to a LAN, in order to allow other hosts to -communicate with the remote host. The \fIproxyarp\fR option causes -pppd to look for a network interface on the same subnet as the remote -host (an interface supporting broadcast and ARP, which is up and not a -point-to-point or loopback interface). If found, pppd creates a -permanent, published ARP entry with the IP address of the remote host -and the hardware address of the network interface found. -.LP -When the \fIdemand\fR option is used, the interface IP addresses have -already been set at the point when IPCP comes up. If pppd has not -been able to negotiate the same addresses that it used to configure -the interface (for example when the peer is an ISP that uses dynamic -IP address assignment), pppd has to change the interface IP addresses -to the negotiated addresses. This may disrupt existing connections, -and the use of demand dialling with peers that do dynamic IP address -assignment is not recommended. -.SH MULTILINK -Multilink PPP provides the capability to combine two or more PPP links -between a pair of machines into a single `bundle', which appears as a -single virtual PPP link which has the combined bandwidth of the -individual links. Currently, multilink PPP is only supported under -Linux. -.LP -Pppd detects that the link it is controlling is connected to the same -peer as another link using the peer's endpoint discriminator and the -authenticated identity of the peer (if it authenticates itself). The -endpoint discriminator is a block of data which is hopefully unique -for each peer. Several types of data can be used, including -locally-assigned strings of bytes, IP addresses, MAC addresses, -randomly strings of bytes, or E-164 phone numbers. The endpoint -discriminator sent to the peer by pppd can be set using the endpoint -option. -.LP -In circumstances the peer may send no endpoint discriminator or a -non-unique value. The optional bundle option adds an extra string -which is added to the peer's endpoint discriminator and authenticated -identity when matching up links to be joined together in a bundle. -The bundle option can also be used to allow the establishment of -multiple bundles between the local system and the peer. Pppd uses a -TDB database in /var/run/pppd.tdb to match up links. -.LP -Assuming that multilink is enabled and the peer is willing to -negotiate multilink, then when pppd is invoked to bring up the first -link to the peer, it will detect that no other link is connected to -the peer and create a new bundle, that is, another ppp network -interface unit. When another pppd is invoked to bring up another link -to the peer, it will detect the existing bundle and join its link to -it. Currently, if the first pppd terminates (for example, because of -a hangup or a received signal) the bundle is destroyed. -.SH EXAMPLES -.LP -The following examples assume that the /etc/ppp/options file contains -the \fIauth\fR option (as in the default /etc/ppp/options file in the -ppp distribution). -.LP -Probably the most common use of pppd is to dial out to an ISP. This -can be done with a command such as -.IP -pppd call isp -.LP -where the /etc/ppp/peers/isp file is set up by the system -administrator to contain something like this: -.IP -ttyS0 19200 crtscts -.br -connect '/usr/sbin/chat -v -f /etc/ppp/chat-isp' -.br -noauth -.LP -In this example, we are using chat to dial the ISP's modem and go -through any logon sequence required. The /etc/ppp/chat-isp file -contains the script used by chat; it could for example contain -something like this: -.IP -ABORT "NO CARRIER" -.br -ABORT "NO DIALTONE" -.br -ABORT "ERROR" -.br -ABORT "NO ANSWER" -.br -ABORT "BUSY" -.br -ABORT "Username/Password Incorrect" -.br -"" "at" -.br -OK "at&d0&c1" -.br -OK "atdt2468135" -.br -"name:" "^Umyuserid" -.br -"word:" "\\qmypassword" -.br -"ispts" "\\q^Uppp" -.br -"~-^Uppp-~" -.LP -See the chat(8) man page for details of chat scripts. -.LP -Pppd can also be used to provide a dial-in ppp service for users. If -the users already have login accounts, the simplest way to set up the -ppp service is to let the users log in to their accounts and run pppd -(installed setuid-root) with a command such as -.IP -pppd proxyarp -.LP -To allow a user to use the PPP facilities, you need to allocate an IP -address for that user's machine and create an entry in -/etc/ppp/pap-secrets or /etc/ppp/chap-secrets (depending on which -authentication method the PPP implementation on the user's machine -supports), so that the user's -machine can authenticate itself. For example, if Joe has a machine -called "joespc" which is to be allowed to dial in to the machine -called "server" and use the IP address joespc.my.net, you would add an -entry like this to /etc/ppp/pap-secrets or /etc/ppp/chap-secrets: -.IP -joespc server "joe's secret" joespc.my.net -.LP -Alternatively, you can create a username called (for example) "ppp", -whose login shell is pppd and whose home directory is /etc/ppp. -Options to be used when pppd is run this way can be put in -/etc/ppp/.ppprc. -.LP -If your serial connection is any more complicated than a piece of -wire, you may need to arrange for some control characters to be -escaped. In particular, it is often useful to escape XON (^Q) and -XOFF (^S), using \fIasyncmap a0000\fR. If the path includes a telnet, -you probably should escape ^] as well (\fIasyncmap 200a0000\fR). If -the path includes an rlogin, you will need to use the \fIescape ff\fR -option on the end which is running the rlogin client, since many -rlogin implementations are not transparent; they will remove the -sequence [0xff, 0xff, 0x73, 0x73, followed by any 8 bytes] from the -stream. -.SH DIAGNOSTICS -.LP -Messages are sent to the syslog daemon using facility LOG_DAEMON. -(This can be overriden by recompiling pppd with the macro -LOG_PPP defined as the desired facility.) In order to see the error -and debug messages, you will need to edit your /etc/syslog.conf file -to direct the messages to the desired output device or file. -.LP -The \fIdebug\fR option causes the contents of all control packets sent -or received to be logged, that is, all LCP, PAP, CHAP or IPCP packets. -This can be useful if the PPP negotiation does not succeed or if -authentication fails. -If debugging is enabled at compile time, the \fIdebug\fR option also -causes other debugging messages to be logged. -.LP -Debugging can also be enabled or disabled by sending a SIGUSR1 signal -to the pppd process. This signal acts as a toggle. -.SH EXIT STATUS -The exit status of pppd is set to indicate whether any error was -detected, or the reason for the link being terminated. The values -used are: -.TP -.B 0 -Pppd has detached, or otherwise the connection was successfully -established and terminated at the peer's request. -.TP -.B 1 -An immediately fatal error of some kind occurred, such as an essential -system call failing, or running out of virtual memory. -.TP -.B 2 -An error was detected in processing the options given, such as two -mutually exclusive options being used. -.TP -.B 3 -Pppd is not setuid-root and the invoking user is not root. -.TP -.B 4 -The kernel does not support PPP, for example, the PPP kernel driver is -not included or cannot be loaded. -.TP -.B 5 -Pppd terminated because it was sent a SIGINT, SIGTERM or SIGHUP -signal. -.TP -.B 6 -The serial port could not be locked. -.TP -.B 7 -The serial port could not be opened. -.TP -.B 8 -The connect script failed (returned a non-zero exit status). -.TP -.B 9 -The command specified as the argument to the \fIpty\fR option could -not be run. -.TP -.B 10 -The PPP negotiation failed, that is, it didn't reach the point where -at least one network protocol (e.g. IP) was running. -.TP -.B 11 -The peer system failed (or refused) to authenticate itself. -.TP -.B 12 -The link was established successfully and terminated because it was -idle. -.TP -.B 13 -The link was established successfully and terminated because the -connect time limit was reached. -.TP -.B 14 -Callback was negotiated and an incoming call should arrive shortly. -.TP -.B 15 -The link was terminated because the peer is not responding to echo -requests. -.TP -.B 16 -The link was terminated by the modem hanging up. -.TP -.B 17 -The PPP negotiation failed because serial loopback was detected. -.TP -.B 18 -The init script failed (returned a non-zero exit status). -.TP -.B 19 -We failed to authenticate ourselves to the peer. -.SH SCRIPTS -Pppd invokes scripts at various stages in its processing which can be -used to perform site-specific ancillary processing. These scripts are -usually shell scripts, but could be executable code files instead. -Pppd does not wait for the scripts to finish. The scripts are -executed as root (with the real and effective user-id set to 0), so -that they can do things such as update routing tables or run -privileged daemons. Be careful that the contents of these scripts do -not compromise your system's security. Pppd runs the scripts with -standard input, output and error redirected to /dev/null, and with an -environment that is empty except for some environment variables that -give information about the link. The environment variables that pppd -sets are: -.TP -.B DEVICE -The name of the serial tty device being used. -.TP -.B IFNAME -The name of the network interface being used. -.TP -.B IPLOCAL -The IP address for the local end of the link. This is only set when -IPCP has come up. -.TP -.B IPREMOTE -The IP address for the remote end of the link. This is only set when -IPCP has come up. -.TP -.B PEERNAME -The authenticated name of the peer. This is only set if the peer -authenticates itself. -.TP -.B SPEED -The baud rate of the tty device. -.TP -.B ORIG_UID -The real user-id of the user who invoked pppd. -.TP -.B PPPLOGNAME -The username of the real user-id that invoked pppd. This is always set. -.P -For the ip-down and auth-down scripts, pppd also sets the following -variables giving statistics for the connection: -.TP -.B CONNECT_TIME -The number of seconds from when the PPP negotiation started until the -connection was terminated. -.TP -.B BYTES_SENT -The number of bytes sent (at the level of the serial port) during the -connection. -.TP -.B BYTES_RCVD -The number of bytes received (at the level of the serial port) during -the connection. -.TP -.B LINKNAME -The logical name of the link, set with the \fIlinkname\fR option. -.P -Pppd invokes the following scripts, if they exist. It is not an error -if they don't exist. -.TP -.B /etc/ppp/auth-up -A program or script which is executed after the remote system -successfully authenticates itself. It is executed with the parameters -.IP -\fIinterface-name peer-name user-name tty-device speed\fR -.IP -Note that this script is not executed if the peer doesn't authenticate -itself, for example when the \fInoauth\fR option is used. -.TP -.B /etc/ppp/auth-down -A program or script which is executed when the link goes down, if -/etc/ppp/auth-up was previously executed. It is executed in the same -manner with the same parameters as /etc/ppp/auth-up. -.TP -.B /etc/ppp/ip-up -A program or script which is executed when the link is available for -sending and receiving IP packets (that is, IPCP has come up). It is -executed with the parameters -.IP -\fIinterface-name tty-device speed local-IP-address -remote-IP-address ipparam\fR -.TP -.B /etc/ppp/ip-down -A program or script which is executed when the link is no longer -available for sending and receiving IP packets. This script can be -used for undoing the effects of the /etc/ppp/ip-up script. It is -invoked in the same manner and with the same parameters as the ip-up -script. -.TP -.B /etc/ppp/ipv6-up -Like /etc/ppp/ip-up, except that it is executed when the link is available -for sending and receiving IPv6 packets. It is executed with the parameters -.IP -\fIinterface-name tty-device speed local-link-local-address -remote-link-local-address ipparam\fR -.TP -.B /etc/ppp/ipv6-down -Similar to /etc/ppp/ip-down, but it is executed when IPv6 packets can no -longer be transmitted on the link. It is executed with the same parameters -as the ipv6-up script. -.TP -.B /etc/ppp/ipx-up -A program or script which is executed when the link is available for -sending and receiving IPX packets (that is, IPXCP has come up). It is -executed with the parameters -.IP -\fIinterface-name tty-device speed network-number local-IPX-node-address -remote-IPX-node-address local-IPX-routing-protocol remote-IPX-routing-protocol -local-IPX-router-name remote-IPX-router-name ipparam pppd-pid\fR -.IP -The local-IPX-routing-protocol and remote-IPX-routing-protocol field -may be one of the following: -.IP -NONE to indicate that there is no routing protocol -.br -RIP to indicate that RIP/SAP should be used -.br -NLSP to indicate that Novell NLSP should be used -.br -RIP NLSP to indicate that both RIP/SAP and NLSP should be used -.TP -.B /etc/ppp/ipx-down -A program or script which is executed when the link is no longer -available for sending and receiving IPX packets. This script can be -used for undoing the effects of the /etc/ppp/ipx-up script. It is -invoked in the same manner and with the same parameters as the ipx-up -script. -.SH FILES -.TP -.B /var/run/ppp\fIn\fB.pid \fR(BSD or Linux), \fB/etc/ppp/ppp\fIn\fB.pid \fR(others) -Process-ID for pppd process on ppp interface unit \fIn\fR. -.TP -.B /var/run/ppp-\fIname\fB.pid \fR(BSD or Linux), \fB/etc/ppp/ppp-\fIname\fB.pid \fR(others) -Process-ID for pppd process for logical link \fIname\fR (see the -\fIlinkname\fR option). -.TP -.B /etc/ppp/pap-secrets -Usernames, passwords and IP addresses for PAP authentication. This -file should be owned by root and not readable or writable by any other -user. Pppd will log a warning if this is not the case. -.TP -.B /etc/ppp/chap-secrets -Names, secrets and IP addresses for CHAP authentication. As for -/etc/ppp/pap-secrets, this file should be owned by root and not -readable or writable by any other user. Pppd will log a warning if -this is not the case. -.TP -.B /etc/ppp/options -System default options for pppd, read before user default options or -command-line options. -.TP -.B ~/.ppprc -User default options, read before /etc/ppp/options.\fIttyname\fR. -.TP -.B /etc/ppp/options.\fIttyname -System default options for the serial port being used, read after -~/.ppprc. In forming the \fIttyname\fR part of this -filename, an initial /dev/ is stripped from the port name (if -present), and any slashes in the remaining part are converted to -dots. -.TP -.B /etc/ppp/peers -A directory containing options files which may contain privileged -options, even if pppd was invoked by a user other than root. The -system administrator can create options files in this directory to -permit non-privileged users to dial out without requiring the peer to -authenticate, but only to certain trusted peers. -.SH SEE ALSO -.TP -.B RFC1144 -Jacobson, V. -\fICompressing TCP/IP headers for low-speed serial links.\fR -February 1990. -.TP -.B RFC1321 -Rivest, R. -.I The MD5 Message-Digest Algorithm. -April 1992. -.TP -.B RFC1332 -McGregor, G. -.I PPP Internet Protocol Control Protocol (IPCP). -May 1992. -.TP -.B RFC1334 -Lloyd, B.; Simpson, W.A. -.I PPP authentication protocols. -October 1992. -.TP -.B RFC1661 -Simpson, W.A. -.I The Point\-to\-Point Protocol (PPP). -July 1994. -.TP -.B RFC1662 -Simpson, W.A. -.I PPP in HDLC-like Framing. -July 1994. -.TP -.B RFC2472 -Haskin, D. -.I IP Version 6 over PPP -December 1998. -.SH NOTES -The following signals have the specified effect when sent to pppd. -.TP -.B SIGINT, SIGTERM -These signals cause pppd to terminate the link (by closing LCP), -restore the serial device settings, and exit. -.TP -.B SIGHUP -This signal causes pppd to terminate the link, restore the serial -device settings, and close the serial device. If the \fIpersist\fR or -\fIdemand\fR option has been specified, pppd will try to reopen the -serial device and start another connection (after the holdoff period). -Otherwise pppd will exit. If this signal is received during the -holdoff period, it causes pppd to end the holdoff period immediately. -.TP -.B SIGUSR1 -This signal toggles the state of the \fIdebug\fR option. -.TP -.B SIGUSR2 -This signal causes pppd to renegotiate compression. This can be -useful to re-enable compression after it has been disabled as a result -of a fatal decompression error. (Fatal decompression errors generally -indicate a bug in one or other implementation.) - -.SH AUTHORS -Paul Mackerras (Paul.Mackerras@cs.anu.edu.au), based on earlier work by -Drew Perkins, -Brad Clements, -Karl Fox, -Greg Christy, -and -Brad Parker. diff --git a/mdk-stage1/ppp/pppd/pppd.h b/mdk-stage1/ppp/pppd/pppd.h deleted file mode 100644 index 02f6dfcef..000000000 --- a/mdk-stage1/ppp/pppd/pppd.h +++ /dev/null @@ -1,787 +0,0 @@ -/* - * pppd.h - PPP daemon global declarations. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -/* - * TODO: - */ - -#ifndef __PPPD_H__ -#define __PPPD_H__ - -#include <stdio.h> /* for FILE */ -#include <limits.h> /* for NGROUPS_MAX */ -#include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */ -#include <sys/types.h> /* for u_int32_t, if defined */ -#include <sys/time.h> /* for struct timeval */ -#include <net/ppp_defs.h> -#include "patchlevel.h" - -#if defined(__STDC__) -#include <stdarg.h> -#define __V(x) x -#else -#include <varargs.h> -#define __V(x) (va_alist) va_dcl -#define const -#define volatile -#endif - -#ifdef INET6 -#include "eui64.h" -#endif - -/* - * Limits. - */ - -#define NUM_PPP 1 /* One PPP interface supported (per process) */ -#define MAXWORDLEN 1024 /* max length of word in file (incl null) */ -#define MAXARGS 1 /* max # args to a command */ -#define MAXNAMELEN 256 /* max length of hostname or name for auth */ -#define MAXSECRETLEN 256 /* max length of password or secret */ - -/* - * Option descriptor structure. - */ - -typedef unsigned char bool; - -enum opt_type { - o_special_noarg = 0, - o_special = 1, - o_bool, - o_int, - o_uint32, - o_string, - o_wild, -}; - -typedef struct { - char *name; /* name of the option */ - enum opt_type type; - void *addr; - char *description; - int flags; - void *addr2; - int upper_limit; - int lower_limit; - const char *source; - short int priority; - short int winner; -} option_t; - -/* Values for flags */ -#define OPT_VALUE 0xff /* mask for presupplied value */ -#define OPT_HEX 0x100 /* int option is in hex */ -#define OPT_NOARG 0x200 /* option doesn't take argument */ -#define OPT_OR 0x400 /* OR in argument to value */ -#define OPT_INC 0x800 /* increment value */ -#define OPT_PRIV 0x1000 /* privileged option */ -#define OPT_STATIC 0x2000 /* string option goes into static array */ -#define OPT_LLIMIT 0x4000 /* check value against lower limit */ -#define OPT_ULIMIT 0x8000 /* check value against upper limit */ -#define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT) -#define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */ -#define OPT_HIDE 0x10000 /* for o_string, print value as ?????? */ -#define OPT_A2LIST 0x10000 /* for o_special, keep list of values */ -#define OPT_NOINCR 0x20000 /* value mustn't be increased */ -#define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */ -#define OPT_PRIO 0x80000 /* process option priorities for this option */ -#define OPT_PRIOSUB 0x100000 /* subsidiary member of priority group */ -#define OPT_ALIAS 0x200000 /* option is alias for previous option */ -#define OPT_A2COPY 0x400000 /* addr2 -> second location to rcv value */ -#define OPT_ENABLE 0x800000 /* use *addr2 as enable for option */ -#define OPT_A2CLR 0x1000000 /* clear *(bool *)addr2 */ -#define OPT_PRIVFIX 0x2000000 /* user can't override if set by root */ -#define OPT_INITONLY 0x4000000 /* option can only be set in init phase */ -#define OPT_DEVEQUIV 0x8000000 /* equiv to device name */ -#define OPT_DEVNAM (OPT_INITONLY | OPT_DEVEQUIV) -#define OPT_A2PRINTER 0x10000000 /* *addr2 is a fn for printing option */ -#define OPT_A2STRVAL 0x20000000 /* *addr2 points to current string value */ -#define OPT_NOPRINT 0x40000000 /* don't print this option at all */ - -#define OPT_VAL(x) ((x) & OPT_VALUE) - -/* Values for priority */ -#define OPRIO_DEFAULT 0 /* a default value */ -#define OPRIO_CFGFILE 1 /* value from a configuration file */ -#define OPRIO_CMDLINE 2 /* value from the command line */ -#define OPRIO_SECFILE 3 /* value from options in a secrets file */ -#define OPRIO_ROOT 100 /* added to priority if OPT_PRIVFIX && root */ - -#ifndef GIDSET_TYPE -#define GIDSET_TYPE gid_t -#endif - -/* Structure representing a list of permitted IP addresses. */ -struct permitted_ip { - int permit; /* 1 = permit, 0 = forbid */ - u_int32_t base; /* match if (addr & mask) == base */ - u_int32_t mask; /* base and mask are in network byte order */ -}; - -/* - * Unfortunately, the linux kernel driver uses a different structure - * for statistics from the rest of the ports. - * This structure serves as a common representation for the bits - * pppd needs. - */ -struct pppd_stats { - unsigned int bytes_in; - unsigned int bytes_out; -}; - -/* Used for storing a sequence of words. Usually malloced. */ -struct wordlist { - struct wordlist *next; - char *word; -}; - -/* An endpoint discriminator, used with multilink. */ -#define MAX_ENDP_LEN 20 /* maximum length of discriminator value */ -struct epdisc { - unsigned char class; - unsigned char length; - unsigned char value[MAX_ENDP_LEN]; -}; - -/* values for epdisc.class */ -#define EPD_NULL 0 /* null discriminator, no data */ -#define EPD_LOCAL 1 -#define EPD_IP 2 -#define EPD_MAC 3 -#define EPD_MAGIC 4 -#define EPD_PHONENUM 5 - -typedef void (*notify_func) __P((void *, int)); - -struct notifier { - struct notifier *next; - notify_func func; - void *arg; -}; - -/* - * Global variables. - */ - -extern int hungup; /* Physical layer has disconnected */ -extern int ifunit; /* Interface unit number */ -extern char ifname[]; /* Interface name */ -extern char hostname[]; /* Our hostname */ -extern u_char outpacket_buf[]; /* Buffer for outgoing packets */ -extern int phase; /* Current state of link - see values below */ -extern int baud_rate; /* Current link speed in bits/sec */ -extern char *progname; /* Name of this program */ -extern int redirect_stderr;/* Connector's stderr should go to file */ -extern char peer_authname[];/* Authenticated name of peer */ -extern int privileged; /* We were run by real-uid root */ -extern int need_holdoff; /* Need holdoff period after link terminates */ -extern char **script_env; /* Environment variables for scripts */ -extern int detached; /* Have detached from controlling tty */ -extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */ -extern int ngroups; /* How many groups valid in groups */ -extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */ -extern int link_stats_valid; /* set if link_stats is valid */ -extern int link_connect_time; /* time the link was up for */ -extern int using_pty; /* using pty as device (notty or pty opt.) */ -extern int log_to_fd; /* logging to this fd as well as syslog */ -extern bool log_default; /* log_to_fd is default (stdout) */ -extern char *no_ppp_msg; /* message to print if ppp not in kernel */ -extern volatile int status; /* exit status for pppd */ -extern bool devnam_fixed; /* can no longer change devnam */ -extern int unsuccess; /* # unsuccessful connection attempts */ -extern int do_callback; /* set if we want to do callback next */ -extern int doing_callback; /* set if this is a callback */ -extern char ppp_devnam[MAXPATHLEN]; -extern struct notifier *pidchange; /* for notifications of pid changing */ -extern struct notifier *phasechange; /* for notifications of phase changes */ -extern struct notifier *exitnotify; /* for notification that we're exiting */ -extern struct notifier *sigreceived; /* notification of received signal */ -extern int listen_time; /* time to listen first (ms) */ - -/* Values for do_callback and doing_callback */ -#define CALLBACK_DIALIN 1 /* we are expecting the call back */ -#define CALLBACK_DIALOUT 2 /* we are dialling out to call back */ - -/* - * Variables set by command-line options. - */ - -extern int debug; /* Debug flag */ -extern int kdebugflag; /* Tell kernel to print debug messages */ -extern int default_device; /* Using /dev/tty or equivalent */ -extern char devnam[MAXPATHLEN]; /* Device name */ -extern int crtscts; /* Use hardware flow control */ -extern bool modem; /* Use modem control lines */ -extern int inspeed; /* Input/Output speed requested */ -extern u_int32_t netmask; /* IP netmask to set on interface */ -extern bool lockflag; /* Create lock file to lock the serial dev */ -extern bool nodetach; /* Don't detach from controlling tty */ -extern bool updetach; /* Detach from controlling tty when link up */ -extern char *initializer; /* Script to initialize physical link */ -extern char *connect_script; /* Script to establish physical link */ -extern char *disconnect_script; /* Script to disestablish physical link */ -extern char *welcomer; /* Script to welcome client after connection */ -extern char *ptycommand; /* Command to run on other side of pty */ -extern int maxconnect; /* Maximum connect time (seconds) */ -extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */ -extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */ -extern bool auth_required; /* Peer is required to authenticate */ -extern bool persist; /* Reopen link after it goes down */ -extern bool uselogin; /* Use /etc/passwd for checking PAP */ -extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */ -extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */ -extern bool explicit_remote;/* remote_name specified with remotename opt */ -extern bool demand; /* Do dial-on-demand */ -extern char *ipparam; /* Extra parameter for ip up/down scripts */ -extern bool cryptpap; /* Others' PAP passwords are encrypted */ -extern int idle_time_limit;/* Shut down link if idle for this long */ -extern int holdoff; /* Dead time before restarting */ -extern bool holdoff_specified; /* true if user gave a holdoff value */ -extern bool notty; /* Stdin/out is not a tty */ -extern char *pty_socket; /* Socket to connect to pty */ -extern char *record_file; /* File to record chars sent/received */ -extern bool sync_serial; /* Device is synchronous serial device */ -extern int maxfail; /* Max # of unsuccessful connection attempts */ -extern char linkname[MAXPATHLEN]; /* logical name for link */ -extern bool tune_kernel; /* May alter kernel settings as necessary */ -extern int connect_delay; /* Time to delay after connect script */ -extern int max_data_rate; /* max bytes/sec through charshunt */ -extern int req_unit; /* interface unit number to use */ -extern bool multilink; /* enable multilink operation */ -extern bool noendpoint; /* don't send or accept endpt. discrim. */ -extern char *bundle_name; /* bundle name for multilink */ -extern bool dump_options; /* print out option values */ -extern bool dryrun; /* check everything, print options, exit */ - -#ifdef PPP_FILTER -extern struct bpf_program pass_filter; /* Filter for pkts to pass */ -extern struct bpf_program active_filter; /* Filter for link-active pkts */ -#endif - -#ifdef MSLANMAN -extern bool ms_lanman; /* Use LanMan password instead of NT */ - /* Has meaning only with MS-CHAP challenges */ -#endif - -extern char *current_option; /* the name of the option being parsed */ -extern int privileged_option; /* set iff the current option came from root */ -extern char *option_source; /* string saying where the option came from */ -extern int option_priority; /* priority of current options */ - -/* - * Values for phase. - */ -#define PHASE_DEAD 0 -#define PHASE_INITIALIZE 1 -#define PHASE_SERIALCONN 2 -#define PHASE_DORMANT 3 -#define PHASE_ESTABLISH 4 -#define PHASE_AUTHENTICATE 5 -#define PHASE_CALLBACK 6 -#define PHASE_NETWORK 7 -#define PHASE_RUNNING 8 -#define PHASE_TERMINATE 9 -#define PHASE_DISCONNECT 10 -#define PHASE_HOLDOFF 11 - -/* - * The following struct gives the addresses of procedures to call - * for a particular protocol. - */ -struct protent { - u_short protocol; /* PPP protocol number */ - /* Initialization procedure */ - void (*init) __P((int unit)); - /* Process a received packet */ - void (*input) __P((int unit, u_char *pkt, int len)); - /* Process a received protocol-reject */ - void (*protrej) __P((int unit)); - /* Lower layer has come up */ - void (*lowerup) __P((int unit)); - /* Lower layer has gone down */ - void (*lowerdown) __P((int unit)); - /* Open the protocol */ - void (*open) __P((int unit)); - /* Close the protocol */ - void (*close) __P((int unit, char *reason)); - /* Print a packet in readable form */ - int (*printpkt) __P((u_char *pkt, int len, - void (*printer) __P((void *, char *, ...)), - void *arg)); - /* Process a received data packet */ - void (*datainput) __P((int unit, u_char *pkt, int len)); - bool enabled_flag; /* 0 iff protocol is disabled */ - char *name; /* Text name of protocol */ - char *data_name; /* Text name of corresponding data protocol */ - option_t *options; /* List of command-line options */ - /* Check requested options, assign defaults */ - void (*check_options) __P((void)); - /* Configure interface for demand-dial */ - int (*demand_conf) __P((int unit)); - /* Say whether to bring up link for this pkt */ - int (*active_pkt) __P((u_char *pkt, int len)); -}; - -/* Table of pointers to supported protocols */ -extern struct protent *protocols[]; - -/* - * This struct contains pointers to a set of procedures for - * doing operations on a "channel". A channel provides a way - * to send and receive PPP packets - the canonical example is - * a serial port device in PPP line discipline (or equivalently - * with PPP STREAMS modules pushed onto it). - */ -struct channel { - /* set of options for this channel */ - option_t *options; - /* find and process a per-channel options file */ - void (*process_extra_options) __P((void)); - /* check all the options that have been given */ - void (*check_options) __P((void)); - /* get the channel ready to do PPP, return a file descriptor */ - int (*connect) __P((void)); - /* we're finished with the channel */ - void (*disconnect) __P((void)); - /* put the channel into PPP `mode' */ - int (*establish_ppp) __P((int)); - /* take the channel out of PPP `mode', restore loopback if demand */ - void (*disestablish_ppp) __P((int)); - /* set the transmit-side PPP parameters of the channel */ - void (*send_config) __P((int, u_int32_t, int, int)); - /* set the receive-side PPP parameters of the channel */ - void (*recv_config) __P((int, u_int32_t, int, int)); - /* cleanup on error or normal exit */ - void (*cleanup) __P((void)); - /* close the device, called in children after fork */ - void (*close) __P((void)); -}; - -extern struct channel *the_channel; - -#define ppp_send_config(unit, mtu, accm, pc, acc) \ -do { \ - if (the_channel->send_config) \ - (*the_channel->send_config)((mtu), (accm), (pc), (acc)); \ -} while (0) - -#define ppp_recv_config(unit, mtu, accm, pc, acc) \ -do { \ - if (the_channel->send_config) \ - (*the_channel->recv_config)((mtu), (accm), (pc), (acc)); \ -} while (0) - -/* - * Prototypes. - */ - -/* Procedures exported from main.c. */ -void set_ifunit __P((int)); /* set stuff that depends on ifunit */ -void detach __P((void)); /* Detach from controlling tty */ -void die __P((int)); /* Cleanup and exit */ -void quit __P((void)); /* like die(1) */ -void novm __P((char *)); /* Say we ran out of memory, and die */ -void timeout __P((void (*func)(void *), void *arg, int s, int us)); - /* Call func(arg) after s.us seconds */ -void untimeout __P((void (*func)(void *), void *arg)); - /* Cancel call to func(arg) */ -void record_child __P((int, char *, void (*) (void *), void *)); -int device_script __P((char *cmd, int in, int out, int dont_wait)); - /* Run `cmd' with given stdin and stdout */ -pid_t run_program __P((char *prog, char **args, int must_exist, - void (*done)(void *), void *arg)); - /* Run program prog with args in child */ -void reopen_log __P((void)); /* (re)open the connection to syslog */ -void update_link_stats __P((int)); /* Get stats at link termination */ -void script_setenv __P((char *, char *, int)); /* set script env var */ -void script_unsetenv __P((char *)); /* unset script env var */ -void new_phase __P((int)); /* signal start of new phase */ -void add_notifier __P((struct notifier **, notify_func, void *)); -void remove_notifier __P((struct notifier **, notify_func, void *)); -void notify __P((struct notifier *, int)); - -/* Procedures exported from tty.c. */ -void tty_init __P((void)); - -/* Procedures exported from utils.c. */ -void log_packet __P((u_char *, int, char *, int)); - /* Format a packet and log it with syslog */ -void print_string __P((char *, int, void (*) (void *, char *, ...), - void *)); /* Format a string for output */ -int slprintf __P((char *, int, char *, ...)); /* sprintf++ */ -int vslprintf __P((char *, int, char *, va_list)); /* vsprintf++ */ -size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */ -size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */ -void dbglog __P((char *, ...)); /* log a debug message */ -void info __P((char *, ...)); /* log an informational message */ -void notice __P((char *, ...)); /* log a notice-level message */ -void warn __P((char *, ...)); /* log a warning message */ -void error __P((char *, ...)); /* log an error message */ -void fatal __P((char *, ...)); /* log an error message and die(1) */ -void init_pr_log __P((char *, int)); /* initialize for using pr_log */ -void pr_log __P((void *, char *, ...)); /* printer fn, output to syslog */ -void end_pr_log __P((void)); /* finish up after using pr_log */ - -/* Procedures exported from auth.c */ -void link_required __P((int)); /* we are starting to use the link */ -void link_terminated __P((int)); /* we are finished with the link */ -void link_down __P((int)); /* the LCP layer has left the Opened state */ -void link_established __P((int)); /* the link is up; authenticate now */ -void start_networks __P((void)); /* start all the network control protos */ -void np_up __P((int, int)); /* a network protocol has come up */ -void np_down __P((int, int)); /* a network protocol has gone down */ -void np_finished __P((int, int)); /* a network protocol no longer needs link */ -void auth_peer_fail __P((int, int)); - /* peer failed to authenticate itself */ -void auth_peer_success __P((int, int, char *, int)); - /* peer successfully authenticated itself */ -void auth_withpeer_fail __P((int, int)); - /* we failed to authenticate ourselves */ -void auth_withpeer_success __P((int, int)); - /* we successfully authenticated ourselves */ -void auth_check_options __P((void)); - /* check authentication options supplied */ -void auth_reset __P((int)); /* check what secrets we have */ -int check_passwd __P((int, char *, int, char *, int, char **)); - /* Check peer-supplied username/password */ -int get_secret __P((int, char *, char *, char *, int *, int)); - /* get "secret" for chap */ -int auth_ip_addr __P((int, u_int32_t)); - /* check if IP address is authorized */ -int bad_ip_adrs __P((u_int32_t)); - /* check if IP address is unreasonable */ - -/* Procedures exported from demand.c */ -void demand_conf __P((void)); /* config interface(s) for demand-dial */ -void demand_block __P((void)); /* set all NPs to queue up packets */ -void demand_unblock __P((void)); /* set all NPs to pass packets */ -void demand_discard __P((void)); /* set all NPs to discard packets */ -void demand_rexmit __P((int)); /* retransmit saved frames for an NP */ -int loop_chars __P((unsigned char *, int)); /* process chars from loopback */ -int loop_frame __P((unsigned char *, int)); /* should we bring link up? */ - -/* Procedures exported from multilink.c */ -void mp_check_options __P((void)); /* Check multilink-related options */ -int mp_join_bundle __P((void)); /* join our link to an appropriate bundle */ -char *epdisc_to_str __P((struct epdisc *)); /* string from endpoint discrim. */ -int str_to_epdisc __P((struct epdisc *, char *)); /* endpt disc. from str */ - -/* Procedures exported from sys-*.c */ -void sys_init __P((void)); /* Do system-dependent initialization */ -void sys_cleanup __P((void)); /* Restore system state before exiting */ -int sys_check_options __P((void)); /* Check options specified */ -void sys_close __P((void)); /* Clean up in a child before execing */ -int ppp_available __P((void)); /* Test whether ppp kernel support exists */ -int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */ -int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */ -int tty_establish_ppp __P((int)); /* Turn serial port into a ppp interface */ -void tty_disestablish_ppp __P((int)); /* Restore port to normal operation */ -void make_new_bundle __P((int, int, int, int)); /* Create new bundle */ -int bundle_attach __P((int)); /* Attach link to existing bundle */ -void cfg_bundle __P((int, int, int, int)); /* Configure existing bundle */ -void clean_check __P((void)); /* Check if line was 8-bit clean */ -void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */ -void restore_tty __P((int)); /* Restore port's original parameters */ -void setdtr __P((int, int)); /* Raise or lower port's DTR line */ -void output __P((int, u_char *, int)); /* Output a PPP packet */ -void wait_input __P((struct timeval *)); - /* Wait for input, with timeout */ -void add_fd __P((int)); /* Add fd to set to wait for */ -void remove_fd __P((int)); /* Remove fd from set to wait for */ -int read_packet __P((u_char *)); /* Read PPP packet */ -int get_loop_output __P((void)); /* Read pkts from loopback */ -void tty_send_config __P((int, u_int32_t, int, int)); - /* Configure i/f transmit parameters */ -void tty_set_xaccm __P((ext_accm)); - /* Set extended transmit ACCM */ -void tty_recv_config __P((int, u_int32_t, int, int)); - /* Configure i/f receive parameters */ -int ccp_test __P((int, u_char *, int, int)); - /* Test support for compression scheme */ -void ccp_flags_set __P((int, int, int)); - /* Set kernel CCP state */ -int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */ -int get_idle_time __P((int, struct ppp_idle *)); - /* Find out how long link has been idle */ -int get_ppp_stats __P((int, struct pppd_stats *)); - /* Return link statistics */ -void netif_set_mtu __P((int, int)); /* Set PPP interface MTU */ -int sifvjcomp __P((int, int, int, int)); - /* Configure VJ TCP header compression */ -int sifup __P((int)); /* Configure i/f up for one protocol */ -int sifnpmode __P((int u, int proto, enum NPmode mode)); - /* Set mode for handling packets for proto */ -int sifdown __P((int)); /* Configure i/f down for one protocol */ -int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t)); - /* Configure IPv4 addresses for i/f */ -int cifaddr __P((int, u_int32_t, u_int32_t)); - /* Reset i/f IP addresses */ -#ifdef INET6 -int sif6addr __P((int, eui64_t, eui64_t)); - /* Configure IPv6 addresses for i/f */ -int cif6addr __P((int, eui64_t, eui64_t)); - /* Remove an IPv6 address from i/f */ -#endif -int sifdefaultroute __P((int, u_int32_t, u_int32_t)); - /* Create default route through i/f */ -int cifdefaultroute __P((int, u_int32_t, u_int32_t)); - /* Delete default route through i/f */ -int sifproxyarp __P((int, u_int32_t)); - /* Add proxy ARP entry for peer */ -int cifproxyarp __P((int, u_int32_t)); - /* Delete proxy ARP entry for peer */ -u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */ -int lock __P((char *)); /* Create lock file for device */ -int relock __P((int)); /* Rewrite lock file with new pid */ -void unlock __P((void)); /* Delete previously-created lock file */ -int get_host_seed __P((void)); /* Get host-dependent random number seed */ -int have_route_to __P((u_int32_t)); /* Check if route to addr exists */ -#ifdef PPP_FILTER -int set_filters __P((struct bpf_program *pass, struct bpf_program *active)); - /* Set filter programs in kernel */ -#endif -#ifdef IPX_CHANGE -int sipxfaddr __P((int, unsigned long, unsigned char *)); -int cipxfaddr __P((int)); -#endif -int get_if_hwaddr __P((u_char *addr, char *name)); -char *get_first_ethernet __P((void)); - -/* Procedures exported from options.c */ -int parse_args __P((int argc, char **argv)); - /* Parse options from arguments given */ -int options_from_file __P((char *filename, int must_exist, int check_prot, - int privileged)); - /* Parse options from an options file */ -int options_from_user __P((void)); /* Parse options from user's .ppprc */ -int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */ -int options_from_list __P((struct wordlist *, int privileged)); - /* Parse options from a wordlist */ -int getword __P((FILE *f, char *word, int *newlinep, char *filename)); - /* Read a word from a file */ -void option_error __P((char *fmt, ...)); - /* Print an error message about an option */ -int int_option __P((char *, int *)); - /* Simplified number_option for decimal ints */ -void add_options __P((option_t *)); /* Add extra options */ -void check_options __P((void)); /* check values after all options parsed */ -int override_value __P((const char *, int, const char *)); - /* override value if permitted by priority */ -void print_options __P((void (*) __P((void *, char *, ...)), void *)); - /* print out values of all options */ - -int parse_dotted_ip __P((char *, u_int32_t *)); - -/* - * Hooks to enable plugins to change various things. - */ -extern int (*new_phase_hook) __P((int)); -extern int (*idle_time_hook) __P((struct ppp_idle *)); -extern int (*holdoff_hook) __P((void)); -extern int (*pap_check_hook) __P((void)); -extern int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp, - struct wordlist **paddrs, - struct wordlist **popts)); -extern void (*pap_logout_hook) __P((void)); -extern int (*pap_passwd_hook) __P((char *user, char *passwd)); -extern void (*ip_up_hook) __P((void)); -extern void (*ip_down_hook) __P((void)); -extern void (*ip_choose_hook) __P((u_int32_t *)); - -/* - * Inline versions of get/put char/short/long. - * Pointer is advanced; we assume that both arguments - * are lvalues and will already be in registers. - * cp MUST be u_char *. - */ -#define GETCHAR(c, cp) { \ - (c) = *(cp)++; \ -} -#define PUTCHAR(c, cp) { \ - *(cp)++ = (u_char) (c); \ -} - - -#define GETSHORT(s, cp) { \ - (s) = *(cp)++ << 8; \ - (s) |= *(cp)++; \ -} -#define PUTSHORT(s, cp) { \ - *(cp)++ = (u_char) ((s) >> 8); \ - *(cp)++ = (u_char) (s); \ -} - -#define GETLONG(l, cp) { \ - (l) = *(cp)++ << 8; \ - (l) |= *(cp)++; (l) <<= 8; \ - (l) |= *(cp)++; (l) <<= 8; \ - (l) |= *(cp)++; \ -} -#define PUTLONG(l, cp) { \ - *(cp)++ = (u_char) ((l) >> 24); \ - *(cp)++ = (u_char) ((l) >> 16); \ - *(cp)++ = (u_char) ((l) >> 8); \ - *(cp)++ = (u_char) (l); \ -} - -#define INCPTR(n, cp) ((cp) += (n)) -#define DECPTR(n, cp) ((cp) -= (n)) - -/* - * System dependent definitions for user-level 4.3BSD UNIX implementation. - */ - -#define TIMEOUT(r, f, t) timeout((r), (f), (t), 0) -#define UNTIMEOUT(r, f) untimeout((r), (f)) - -#define BCOPY(s, d, l) memcpy(d, s, l) -#define BZERO(s, n) memset(s, 0, n) - -#define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); } - -/* - * MAKEHEADER - Add Header fields to a packet. - */ -#define MAKEHEADER(p, t) { \ - PUTCHAR(PPP_ALLSTATIONS, p); \ - PUTCHAR(PPP_UI, p); \ - PUTSHORT(t, p); } - -/* - * Exit status values. - */ -#define EXIT_OK 0 -#define EXIT_FATAL_ERROR 1 -#define EXIT_OPTION_ERROR 2 -#define EXIT_NOT_ROOT 3 -#define EXIT_NO_KERNEL_SUPPORT 4 -#define EXIT_USER_REQUEST 5 -#define EXIT_LOCK_FAILED 6 -#define EXIT_OPEN_FAILED 7 -#define EXIT_CONNECT_FAILED 8 -#define EXIT_PTYCMD_FAILED 9 -#define EXIT_NEGOTIATION_FAILED 10 -#define EXIT_PEER_AUTH_FAILED 11 -#define EXIT_IDLE_TIMEOUT 12 -#define EXIT_CONNECT_TIME 13 -#define EXIT_CALLBACK 14 -#define EXIT_PEER_DEAD 15 -#define EXIT_HANGUP 16 -#define EXIT_LOOPBACK 17 -#define EXIT_INIT_FAILED 18 -#define EXIT_AUTH_TOPEER_FAILED 19 - -/* - * Debug macros. Slightly useful for finding bugs in pppd, not particularly - * useful for finding out why your connection isn't being established. - */ -#ifdef DEBUGALL -#define DEBUGMAIN 1 -#define DEBUGFSM 1 -#define DEBUGLCP 1 -#define DEBUGIPCP 1 -#define DEBUGIPV6CP 1 -#define DEBUGUPAP 1 -#define DEBUGCHAP 1 -#endif - -#ifndef LOG_PPP /* we use LOG_LOCAL2 for syslog by default */ -#if defined(DEBUGMAIN) || defined(DEBUGFSM) || defined(DEBUGSYS) \ - || defined(DEBUGLCP) || defined(DEBUGIPCP) || defined(DEBUGUPAP) \ - || defined(DEBUGCHAP) || defined(DEBUG) || defined(DEBUGIPV6CP) -#define LOG_PPP LOG_LOCAL2 -#else -#define LOG_PPP LOG_DAEMON -#endif -#endif /* LOG_PPP */ - -#ifdef DEBUGMAIN -#define MAINDEBUG(x) if (debug) dbglog x -#else -#define MAINDEBUG(x) -#endif - -#ifdef DEBUGSYS -#define SYSDEBUG(x) if (debug) dbglog x -#else -#define SYSDEBUG(x) -#endif - -#ifdef DEBUGFSM -#define FSMDEBUG(x) if (debug) dbglog x -#else -#define FSMDEBUG(x) -#endif - -#ifdef DEBUGLCP -#define LCPDEBUG(x) if (debug) dbglog x -#else -#define LCPDEBUG(x) -#endif - -#ifdef DEBUGIPCP -#define IPCPDEBUG(x) if (debug) dbglog x -#else -#define IPCPDEBUG(x) -#endif - -#ifdef DEBUGIPV6CP -#define IPV6CPDEBUG(x) if (debug) dbglog x -#else -#define IPV6CPDEBUG(x) -#endif - -#ifdef DEBUGUPAP -#define UPAPDEBUG(x) if (debug) dbglog x -#else -#define UPAPDEBUG(x) -#endif - -#ifdef DEBUGCHAP -#define CHAPDEBUG(x) if (debug) dbglog x -#else -#define CHAPDEBUG(x) -#endif - -#ifdef DEBUGIPXCP -#define IPXCPDEBUG(x) if (debug) dbglog x -#else -#define IPXCPDEBUG(x) -#endif - -#ifndef SIGTYPE -#if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) -#define SIGTYPE void -#else -#define SIGTYPE int -#endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */ -#endif /* SIGTYPE */ - -#ifndef MIN -#define MIN(a, b) ((a) < (b)? (a): (b)) -#endif -#ifndef MAX -#define MAX(a, b) ((a) > (b)? (a): (b)) -#endif - -#endif /* __PPP_H__ */ diff --git a/mdk-stage1/ppp/pppd/pppd.h.wtmp b/mdk-stage1/ppp/pppd/pppd.h.wtmp deleted file mode 100644 index 4d440be06..000000000 --- a/mdk-stage1/ppp/pppd/pppd.h.wtmp +++ /dev/null @@ -1,789 +0,0 @@ -/* - * pppd.h - PPP daemon global declarations. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -/* - * TODO: - */ - -#ifndef __PPPD_H__ -#define __PPPD_H__ - -#include <stdio.h> /* for FILE */ -#include <limits.h> /* for NGROUPS_MAX */ -#include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */ -#include <sys/types.h> /* for u_int32_t, if defined */ -#include <sys/time.h> /* for struct timeval */ -#include <net/ppp_defs.h> -#include "patchlevel.h" - -#if defined(__STDC__) -#include <stdarg.h> -#define __V(x) x -#else -#include <varargs.h> -#define __V(x) (va_alist) va_dcl -#define const -#define volatile -#endif - -#ifdef INET6 -#include "eui64.h" -#endif - -/* - * Limits. - */ - -#define NUM_PPP 1 /* One PPP interface supported (per process) */ -#define MAXWORDLEN 1024 /* max length of word in file (incl null) */ -#define MAXARGS 1 /* max # args to a command */ -#define MAXNAMELEN 256 /* max length of hostname or name for auth */ -#define MAXSECRETLEN 256 /* max length of password or secret */ - -/* - * Option descriptor structure. - */ - -typedef unsigned char bool; - -enum opt_type { - o_special_noarg = 0, - o_special = 1, - o_bool, - o_int, - o_uint32, - o_string, - o_wild, -}; - -typedef struct { - char *name; /* name of the option */ - enum opt_type type; - void *addr; - char *description; - int flags; - void *addr2; - int upper_limit; - int lower_limit; - const char *source; - short int priority; - short int winner; -} option_t; - -/* Values for flags */ -#define OPT_VALUE 0xff /* mask for presupplied value */ -#define OPT_HEX 0x100 /* int option is in hex */ -#define OPT_NOARG 0x200 /* option doesn't take argument */ -#define OPT_OR 0x400 /* OR in argument to value */ -#define OPT_INC 0x800 /* increment value */ -#define OPT_PRIV 0x1000 /* privileged option */ -#define OPT_STATIC 0x2000 /* string option goes into static array */ -#define OPT_LLIMIT 0x4000 /* check value against lower limit */ -#define OPT_ULIMIT 0x8000 /* check value against upper limit */ -#define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT) -#define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */ -#define OPT_HIDE 0x10000 /* for o_string, print value as ?????? */ -#define OPT_A2LIST 0x10000 /* for o_special, keep list of values */ -#define OPT_NOINCR 0x20000 /* value mustn't be increased */ -#define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */ -#define OPT_PRIO 0x80000 /* process option priorities for this option */ -#define OPT_PRIOSUB 0x100000 /* subsidiary member of priority group */ -#define OPT_ALIAS 0x200000 /* option is alias for previous option */ -#define OPT_A2COPY 0x400000 /* addr2 -> second location to rcv value */ -#define OPT_ENABLE 0x800000 /* use *addr2 as enable for option */ -#define OPT_A2CLR 0x1000000 /* clear *(bool *)addr2 */ -#define OPT_PRIVFIX 0x2000000 /* user can't override if set by root */ -#define OPT_INITONLY 0x4000000 /* option can only be set in init phase */ -#define OPT_DEVEQUIV 0x8000000 /* equiv to device name */ -#define OPT_DEVNAM (OPT_INITONLY | OPT_DEVEQUIV) -#define OPT_A2PRINTER 0x10000000 /* *addr2 is a fn for printing option */ -#define OPT_A2STRVAL 0x20000000 /* *addr2 points to current string value */ -#define OPT_NOPRINT 0x40000000 /* don't print this option at all */ - -#define OPT_VAL(x) ((x) & OPT_VALUE) - -/* Values for priority */ -#define OPRIO_DEFAULT 0 /* a default value */ -#define OPRIO_CFGFILE 1 /* value from a configuration file */ -#define OPRIO_CMDLINE 2 /* value from the command line */ -#define OPRIO_SECFILE 3 /* value from options in a secrets file */ -#define OPRIO_ROOT 100 /* added to priority if OPT_PRIVFIX && root */ - -#ifndef GIDSET_TYPE -#define GIDSET_TYPE gid_t -#endif - -/* Structure representing a list of permitted IP addresses. */ -struct permitted_ip { - int permit; /* 1 = permit, 0 = forbid */ - u_int32_t base; /* match if (addr & mask) == base */ - u_int32_t mask; /* base and mask are in network byte order */ -}; - -/* - * Unfortunately, the linux kernel driver uses a different structure - * for statistics from the rest of the ports. - * This structure serves as a common representation for the bits - * pppd needs. - */ -struct pppd_stats { - unsigned int bytes_in; - unsigned int bytes_out; -}; - -/* Used for storing a sequence of words. Usually malloced. */ -struct wordlist { - struct wordlist *next; - char *word; -}; - -/* An endpoint discriminator, used with multilink. */ -#define MAX_ENDP_LEN 20 /* maximum length of discriminator value */ -struct epdisc { - unsigned char class; - unsigned char length; - unsigned char value[MAX_ENDP_LEN]; -}; - -/* values for epdisc.class */ -#define EPD_NULL 0 /* null discriminator, no data */ -#define EPD_LOCAL 1 -#define EPD_IP 2 -#define EPD_MAC 3 -#define EPD_MAGIC 4 -#define EPD_PHONENUM 5 - -typedef void (*notify_func) __P((void *, int)); - -struct notifier { - struct notifier *next; - notify_func func; - void *arg; -}; - -/* - * Global variables. - */ - -extern int hungup; /* Physical layer has disconnected */ -extern int ifunit; /* Interface unit number */ -extern char ifname[]; /* Interface name */ -extern char hostname[]; /* Our hostname */ -extern u_char outpacket_buf[]; /* Buffer for outgoing packets */ -extern int phase; /* Current state of link - see values below */ -extern int baud_rate; /* Current link speed in bits/sec */ -extern char *progname; /* Name of this program */ -extern int redirect_stderr;/* Connector's stderr should go to file */ -extern char peer_authname[];/* Authenticated name of peer */ -extern int privileged; /* We were run by real-uid root */ -extern int need_holdoff; /* Need holdoff period after link terminates */ -extern char **script_env; /* Environment variables for scripts */ -extern int detached; /* Have detached from controlling tty */ -extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */ -extern int ngroups; /* How many groups valid in groups */ -extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */ -extern int link_stats_valid; /* set if link_stats is valid */ -extern int link_connect_time; /* time the link was up for */ -extern int using_pty; /* using pty as device (notty or pty opt.) */ -extern int log_to_fd; /* logging to this fd as well as syslog */ -extern bool log_default; /* log_to_fd is default (stdout) */ -extern char *no_ppp_msg; /* message to print if ppp not in kernel */ -extern volatile int status; /* exit status for pppd */ -extern bool devnam_fixed; /* can no longer change devnam */ -extern int unsuccess; /* # unsuccessful connection attempts */ -extern int do_callback; /* set if we want to do callback next */ -extern int doing_callback; /* set if this is a callback */ -extern char ppp_devnam[MAXPATHLEN]; -extern struct notifier *pidchange; /* for notifications of pid changing */ -extern struct notifier *phasechange; /* for notifications of phase changes */ -extern struct notifier *exitnotify; /* for notification that we're exiting */ -extern struct notifier *sigreceived; /* notification of received signal */ -extern int listen_time; /* time to listen first (ms) */ - -/* Values for do_callback and doing_callback */ -#define CALLBACK_DIALIN 1 /* we are expecting the call back */ -#define CALLBACK_DIALOUT 2 /* we are dialling out to call back */ - -/* - * Variables set by command-line options. - */ - -extern int debug; /* Debug flag */ -extern int kdebugflag; /* Tell kernel to print debug messages */ -extern int default_device; /* Using /dev/tty or equivalent */ -extern char devnam[MAXPATHLEN]; /* Device name */ -extern int crtscts; /* Use hardware flow control */ -extern bool modem; /* Use modem control lines */ -extern int inspeed; /* Input/Output speed requested */ -extern u_int32_t netmask; /* IP netmask to set on interface */ -extern bool lockflag; /* Create lock file to lock the serial dev */ -extern bool nodetach; /* Don't detach from controlling tty */ -extern bool updetach; /* Detach from controlling tty when link up */ -extern char *initializer; /* Script to initialize physical link */ -extern char *connect_script; /* Script to establish physical link */ -extern char *disconnect_script; /* Script to disestablish physical link */ -extern char *welcomer; /* Script to welcome client after connection */ -extern char *ptycommand; /* Command to run on other side of pty */ -extern int maxconnect; /* Maximum connect time (seconds) */ -extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */ -extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */ -extern bool auth_required; /* Peer is required to authenticate */ -extern bool persist; /* Reopen link after it goes down */ -extern bool uselogin; /* Use /etc/passwd for checking PAP */ -extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */ -extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */ -extern bool explicit_remote;/* remote_name specified with remotename opt */ -extern bool demand; /* Do dial-on-demand */ -extern char *ipparam; /* Extra parameter for ip up/down scripts */ -extern bool cryptpap; /* Others' PAP passwords are encrypted */ -extern int idle_time_limit;/* Shut down link if idle for this long */ -extern int holdoff; /* Dead time before restarting */ -extern bool holdoff_specified; /* true if user gave a holdoff value */ -extern bool notty; /* Stdin/out is not a tty */ -extern char *pty_socket; /* Socket to connect to pty */ -extern char *record_file; /* File to record chars sent/received */ -extern bool sync_serial; /* Device is synchronous serial device */ -extern int maxfail; /* Max # of unsuccessful connection attempts */ -extern char linkname[MAXPATHLEN]; /* logical name for link */ -extern bool tune_kernel; /* May alter kernel settings as necessary */ -extern int connect_delay; /* Time to delay after connect script */ -extern int max_data_rate; /* max bytes/sec through charshunt */ -extern int req_unit; /* interface unit number to use */ -extern bool multilink; /* enable multilink operation */ -extern bool noendpoint; /* don't send or accept endpt. discrim. */ -extern char *bundle_name; /* bundle name for multilink */ -extern bool dump_options; /* print out option values */ -extern bool dryrun; /* check everything, print options, exit */ - -#ifdef PPP_FILTER -extern struct bpf_program pass_filter; /* Filter for pkts to pass */ -extern struct bpf_program active_filter; /* Filter for link-active pkts */ -#endif - -#ifdef MSLANMAN -extern bool ms_lanman; /* Use LanMan password instead of NT */ - /* Has meaning only with MS-CHAP challenges */ -#endif - -extern char *current_option; /* the name of the option being parsed */ -extern int privileged_option; /* set iff the current option came from root */ -extern char *option_source; /* string saying where the option came from */ -extern int option_priority; /* priority of current options */ - -/* - * Values for phase. - */ -#define PHASE_DEAD 0 -#define PHASE_INITIALIZE 1 -#define PHASE_SERIALCONN 2 -#define PHASE_DORMANT 3 -#define PHASE_ESTABLISH 4 -#define PHASE_AUTHENTICATE 5 -#define PHASE_CALLBACK 6 -#define PHASE_NETWORK 7 -#define PHASE_RUNNING 8 -#define PHASE_TERMINATE 9 -#define PHASE_DISCONNECT 10 -#define PHASE_HOLDOFF 11 - -/* - * The following struct gives the addresses of procedures to call - * for a particular protocol. - */ -struct protent { - u_short protocol; /* PPP protocol number */ - /* Initialization procedure */ - void (*init) __P((int unit)); - /* Process a received packet */ - void (*input) __P((int unit, u_char *pkt, int len)); - /* Process a received protocol-reject */ - void (*protrej) __P((int unit)); - /* Lower layer has come up */ - void (*lowerup) __P((int unit)); - /* Lower layer has gone down */ - void (*lowerdown) __P((int unit)); - /* Open the protocol */ - void (*open) __P((int unit)); - /* Close the protocol */ - void (*close) __P((int unit, char *reason)); - /* Print a packet in readable form */ - int (*printpkt) __P((u_char *pkt, int len, - void (*printer) __P((void *, char *, ...)), - void *arg)); - /* Process a received data packet */ - void (*datainput) __P((int unit, u_char *pkt, int len)); - bool enabled_flag; /* 0 iff protocol is disabled */ - char *name; /* Text name of protocol */ - char *data_name; /* Text name of corresponding data protocol */ - option_t *options; /* List of command-line options */ - /* Check requested options, assign defaults */ - void (*check_options) __P((void)); - /* Configure interface for demand-dial */ - int (*demand_conf) __P((int unit)); - /* Say whether to bring up link for this pkt */ - int (*active_pkt) __P((u_char *pkt, int len)); -}; - -/* Table of pointers to supported protocols */ -extern struct protent *protocols[]; - -/* - * This struct contains pointers to a set of procedures for - * doing operations on a "channel". A channel provides a way - * to send and receive PPP packets - the canonical example is - * a serial port device in PPP line discipline (or equivalently - * with PPP STREAMS modules pushed onto it). - */ -struct channel { - /* set of options for this channel */ - option_t *options; - /* find and process a per-channel options file */ - void (*process_extra_options) __P((void)); - /* check all the options that have been given */ - void (*check_options) __P((void)); - /* get the channel ready to do PPP, return a file descriptor */ - int (*connect) __P((void)); - /* we're finished with the channel */ - void (*disconnect) __P((void)); - /* put the channel into PPP `mode' */ - int (*establish_ppp) __P((int)); - /* take the channel out of PPP `mode', restore loopback if demand */ - void (*disestablish_ppp) __P((int)); - /* set the transmit-side PPP parameters of the channel */ - void (*send_config) __P((int, u_int32_t, int, int)); - /* set the receive-side PPP parameters of the channel */ - void (*recv_config) __P((int, u_int32_t, int, int)); - /* cleanup on error or normal exit */ - void (*cleanup) __P((void)); - /* close the device, called in children after fork */ - void (*close) __P((void)); -}; - -extern struct channel *the_channel; - -#define ppp_send_config(unit, mtu, accm, pc, acc) \ -do { \ - if (the_channel->send_config) \ - (*the_channel->send_config)((mtu), (accm), (pc), (acc)); \ -} while (0) - -#define ppp_recv_config(unit, mtu, accm, pc, acc) \ -do { \ - if (the_channel->send_config) \ - (*the_channel->recv_config)((mtu), (accm), (pc), (acc)); \ -} while (0) - -/* - * Prototypes. - */ - -/* Procedures exported from main.c. */ -void set_ifunit __P((int)); /* set stuff that depends on ifunit */ -void detach __P((void)); /* Detach from controlling tty */ -void die __P((int)); /* Cleanup and exit */ -void quit __P((void)); /* like die(1) */ -void novm __P((char *)); /* Say we ran out of memory, and die */ -void timeout __P((void (*func)(void *), void *arg, int s, int us)); - /* Call func(arg) after s.us seconds */ -void untimeout __P((void (*func)(void *), void *arg)); - /* Cancel call to func(arg) */ -void record_child __P((int, char *, void (*) (void *), void *)); -int device_script __P((char *cmd, int in, int out, int dont_wait)); - /* Run `cmd' with given stdin and stdout */ -pid_t run_program __P((char *prog, char **args, int must_exist, - void (*done)(void *), void *arg)); - /* Run program prog with args in child */ -void reopen_log __P((void)); /* (re)open the connection to syslog */ -void update_link_stats __P((int)); /* Get stats at link termination */ -void script_setenv __P((char *, char *, int)); /* set script env var */ -void script_unsetenv __P((char *)); /* unset script env var */ -void new_phase __P((int)); /* signal start of new phase */ -void add_notifier __P((struct notifier **, notify_func, void *)); -void remove_notifier __P((struct notifier **, notify_func, void *)); -void notify __P((struct notifier *, int)); - -/* Procedures exported from tty.c. */ -void tty_init __P((void)); - -/* Procedures exported from utils.c. */ -void log_packet __P((u_char *, int, char *, int)); - /* Format a packet and log it with syslog */ -void print_string __P((char *, int, void (*) (void *, char *, ...), - void *)); /* Format a string for output */ -int slprintf __P((char *, int, char *, ...)); /* sprintf++ */ -int vslprintf __P((char *, int, char *, va_list)); /* vsprintf++ */ -size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */ -size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */ -void dbglog __P((char *, ...)); /* log a debug message */ -void info __P((char *, ...)); /* log an informational message */ -void notice __P((char *, ...)); /* log a notice-level message */ -void warn __P((char *, ...)); /* log a warning message */ -void error __P((char *, ...)); /* log an error message */ -void fatal __P((char *, ...)); /* log an error message and die(1) */ -void init_pr_log __P((char *, int)); /* initialize for using pr_log */ -void pr_log __P((void *, char *, ...)); /* printer fn, output to syslog */ -void end_pr_log __P((void)); /* finish up after using pr_log */ - -/* Procedures exported from auth.c */ -void link_required __P((int)); /* we are starting to use the link */ -void link_terminated __P((int)); /* we are finished with the link */ -void link_down __P((int)); /* the LCP layer has left the Opened state */ -void link_established __P((int)); /* the link is up; authenticate now */ -void start_networks __P((void)); /* start all the network control protos */ -void np_up __P((int, int)); /* a network protocol has come up */ -void np_down __P((int, int)); /* a network protocol has gone down */ -void np_finished __P((int, int)); /* a network protocol no longer needs link */ -void auth_peer_fail __P((int, int)); - /* peer failed to authenticate itself */ -void auth_peer_success __P((int, int, char *, int)); - /* peer successfully authenticated itself */ -void auth_withpeer_fail __P((int, int)); - /* we failed to authenticate ourselves */ -void auth_withpeer_success __P((int, int)); - /* we successfully authenticated ourselves */ -void auth_check_options __P((void)); - /* check authentication options supplied */ -void auth_reset __P((int)); /* check what secrets we have */ -int check_passwd __P((int, char *, int, char *, int, char **)); - /* Check peer-supplied username/password */ -int get_secret __P((int, char *, char *, char *, int *, int)); - /* get "secret" for chap */ -int auth_ip_addr __P((int, u_int32_t)); - /* check if IP address is authorized */ -int bad_ip_adrs __P((u_int32_t)); - /* check if IP address is unreasonable */ - -/* Procedures exported from demand.c */ -void demand_conf __P((void)); /* config interface(s) for demand-dial */ -void demand_block __P((void)); /* set all NPs to queue up packets */ -void demand_unblock __P((void)); /* set all NPs to pass packets */ -void demand_discard __P((void)); /* set all NPs to discard packets */ -void demand_rexmit __P((int)); /* retransmit saved frames for an NP */ -int loop_chars __P((unsigned char *, int)); /* process chars from loopback */ -int loop_frame __P((unsigned char *, int)); /* should we bring link up? */ - -/* Procedures exported from multilink.c */ -void mp_check_options __P((void)); /* Check multilink-related options */ -int mp_join_bundle __P((void)); /* join our link to an appropriate bundle */ -char *epdisc_to_str __P((struct epdisc *)); /* string from endpoint discrim. */ -int str_to_epdisc __P((struct epdisc *, char *)); /* endpt disc. from str */ - -/* Procedures exported from sys-*.c */ -void sys_init __P((void)); /* Do system-dependent initialization */ -void sys_cleanup __P((void)); /* Restore system state before exiting */ -int sys_check_options __P((void)); /* Check options specified */ -void sys_close __P((void)); /* Clean up in a child before execing */ -int ppp_available __P((void)); /* Test whether ppp kernel support exists */ -int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */ -int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */ -int tty_establish_ppp __P((int)); /* Turn serial port into a ppp interface */ -void tty_disestablish_ppp __P((int)); /* Restore port to normal operation */ -void make_new_bundle __P((int, int, int, int)); /* Create new bundle */ -int bundle_attach __P((int)); /* Attach link to existing bundle */ -void cfg_bundle __P((int, int, int, int)); /* Configure existing bundle */ -void clean_check __P((void)); /* Check if line was 8-bit clean */ -void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */ -void restore_tty __P((int)); /* Restore port's original parameters */ -void setdtr __P((int, int)); /* Raise or lower port's DTR line */ -void output __P((int, u_char *, int)); /* Output a PPP packet */ -void wait_input __P((struct timeval *)); - /* Wait for input, with timeout */ -void add_fd __P((int)); /* Add fd to set to wait for */ -void remove_fd __P((int)); /* Remove fd from set to wait for */ -int read_packet __P((u_char *)); /* Read PPP packet */ -int get_loop_output __P((void)); /* Read pkts from loopback */ -void tty_send_config __P((int, u_int32_t, int, int)); - /* Configure i/f transmit parameters */ -void tty_set_xaccm __P((ext_accm)); - /* Set extended transmit ACCM */ -void tty_recv_config __P((int, u_int32_t, int, int)); - /* Configure i/f receive parameters */ -int ccp_test __P((int, u_char *, int, int)); - /* Test support for compression scheme */ -void ccp_flags_set __P((int, int, int)); - /* Set kernel CCP state */ -int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */ -int get_idle_time __P((int, struct ppp_idle *)); - /* Find out how long link has been idle */ -int get_ppp_stats __P((int, struct pppd_stats *)); - /* Return link statistics */ -void netif_set_mtu __P((int, int)); /* Set PPP interface MTU */ -int sifvjcomp __P((int, int, int, int)); - /* Configure VJ TCP header compression */ -int sifup __P((int)); /* Configure i/f up for one protocol */ -int sifnpmode __P((int u, int proto, enum NPmode mode)); - /* Set mode for handling packets for proto */ -int sifdown __P((int)); /* Configure i/f down for one protocol */ -int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t)); - /* Configure IPv4 addresses for i/f */ -int cifaddr __P((int, u_int32_t, u_int32_t)); - /* Reset i/f IP addresses */ -#ifdef INET6 -int sif6addr __P((int, eui64_t, eui64_t)); - /* Configure IPv6 addresses for i/f */ -int cif6addr __P((int, eui64_t, eui64_t)); - /* Remove an IPv6 address from i/f */ -#endif -int sifdefaultroute __P((int, u_int32_t, u_int32_t)); - /* Create default route through i/f */ -int cifdefaultroute __P((int, u_int32_t, u_int32_t)); - /* Delete default route through i/f */ -int sifproxyarp __P((int, u_int32_t)); - /* Add proxy ARP entry for peer */ -int cifproxyarp __P((int, u_int32_t)); - /* Delete proxy ARP entry for peer */ -u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */ -int lock __P((char *)); /* Create lock file for device */ -int relock __P((int)); /* Rewrite lock file with new pid */ -void unlock __P((void)); /* Delete previously-created lock file */ -void logwtmp __P((const char *, const char *, const char *)); - /* Write entry to wtmp file */ -int get_host_seed __P((void)); /* Get host-dependent random number seed */ -int have_route_to __P((u_int32_t)); /* Check if route to addr exists */ -#ifdef PPP_FILTER -int set_filters __P((struct bpf_program *pass, struct bpf_program *active)); - /* Set filter programs in kernel */ -#endif -#ifdef IPX_CHANGE -int sipxfaddr __P((int, unsigned long, unsigned char *)); -int cipxfaddr __P((int)); -#endif -int get_if_hwaddr __P((u_char *addr, char *name)); -char *get_first_ethernet __P((void)); - -/* Procedures exported from options.c */ -int parse_args __P((int argc, char **argv)); - /* Parse options from arguments given */ -int options_from_file __P((char *filename, int must_exist, int check_prot, - int privileged)); - /* Parse options from an options file */ -int options_from_user __P((void)); /* Parse options from user's .ppprc */ -int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */ -int options_from_list __P((struct wordlist *, int privileged)); - /* Parse options from a wordlist */ -int getword __P((FILE *f, char *word, int *newlinep, char *filename)); - /* Read a word from a file */ -void option_error __P((char *fmt, ...)); - /* Print an error message about an option */ -int int_option __P((char *, int *)); - /* Simplified number_option for decimal ints */ -void add_options __P((option_t *)); /* Add extra options */ -void check_options __P((void)); /* check values after all options parsed */ -int override_value __P((const char *, int, const char *)); - /* override value if permitted by priority */ -void print_options __P((void (*) __P((void *, char *, ...)), void *)); - /* print out values of all options */ - -int parse_dotted_ip __P((char *, u_int32_t *)); - -/* - * Hooks to enable plugins to change various things. - */ -extern int (*new_phase_hook) __P((int)); -extern int (*idle_time_hook) __P((struct ppp_idle *)); -extern int (*holdoff_hook) __P((void)); -extern int (*pap_check_hook) __P((void)); -extern int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp, - struct wordlist **paddrs, - struct wordlist **popts)); -extern void (*pap_logout_hook) __P((void)); -extern int (*pap_passwd_hook) __P((char *user, char *passwd)); -extern void (*ip_up_hook) __P((void)); -extern void (*ip_down_hook) __P((void)); -extern void (*ip_choose_hook) __P((u_int32_t *)); - -/* - * Inline versions of get/put char/short/long. - * Pointer is advanced; we assume that both arguments - * are lvalues and will already be in registers. - * cp MUST be u_char *. - */ -#define GETCHAR(c, cp) { \ - (c) = *(cp)++; \ -} -#define PUTCHAR(c, cp) { \ - *(cp)++ = (u_char) (c); \ -} - - -#define GETSHORT(s, cp) { \ - (s) = *(cp)++ << 8; \ - (s) |= *(cp)++; \ -} -#define PUTSHORT(s, cp) { \ - *(cp)++ = (u_char) ((s) >> 8); \ - *(cp)++ = (u_char) (s); \ -} - -#define GETLONG(l, cp) { \ - (l) = *(cp)++ << 8; \ - (l) |= *(cp)++; (l) <<= 8; \ - (l) |= *(cp)++; (l) <<= 8; \ - (l) |= *(cp)++; \ -} -#define PUTLONG(l, cp) { \ - *(cp)++ = (u_char) ((l) >> 24); \ - *(cp)++ = (u_char) ((l) >> 16); \ - *(cp)++ = (u_char) ((l) >> 8); \ - *(cp)++ = (u_char) (l); \ -} - -#define INCPTR(n, cp) ((cp) += (n)) -#define DECPTR(n, cp) ((cp) -= (n)) - -/* - * System dependent definitions for user-level 4.3BSD UNIX implementation. - */ - -#define TIMEOUT(r, f, t) timeout((r), (f), (t), 0) -#define UNTIMEOUT(r, f) untimeout((r), (f)) - -#define BCOPY(s, d, l) memcpy(d, s, l) -#define BZERO(s, n) memset(s, 0, n) - -#define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); } - -/* - * MAKEHEADER - Add Header fields to a packet. - */ -#define MAKEHEADER(p, t) { \ - PUTCHAR(PPP_ALLSTATIONS, p); \ - PUTCHAR(PPP_UI, p); \ - PUTSHORT(t, p); } - -/* - * Exit status values. - */ -#define EXIT_OK 0 -#define EXIT_FATAL_ERROR 1 -#define EXIT_OPTION_ERROR 2 -#define EXIT_NOT_ROOT 3 -#define EXIT_NO_KERNEL_SUPPORT 4 -#define EXIT_USER_REQUEST 5 -#define EXIT_LOCK_FAILED 6 -#define EXIT_OPEN_FAILED 7 -#define EXIT_CONNECT_FAILED 8 -#define EXIT_PTYCMD_FAILED 9 -#define EXIT_NEGOTIATION_FAILED 10 -#define EXIT_PEER_AUTH_FAILED 11 -#define EXIT_IDLE_TIMEOUT 12 -#define EXIT_CONNECT_TIME 13 -#define EXIT_CALLBACK 14 -#define EXIT_PEER_DEAD 15 -#define EXIT_HANGUP 16 -#define EXIT_LOOPBACK 17 -#define EXIT_INIT_FAILED 18 -#define EXIT_AUTH_TOPEER_FAILED 19 - -/* - * Debug macros. Slightly useful for finding bugs in pppd, not particularly - * useful for finding out why your connection isn't being established. - */ -#ifdef DEBUGALL -#define DEBUGMAIN 1 -#define DEBUGFSM 1 -#define DEBUGLCP 1 -#define DEBUGIPCP 1 -#define DEBUGIPV6CP 1 -#define DEBUGUPAP 1 -#define DEBUGCHAP 1 -#endif - -#ifndef LOG_PPP /* we use LOG_LOCAL2 for syslog by default */ -#if defined(DEBUGMAIN) || defined(DEBUGFSM) || defined(DEBUGSYS) \ - || defined(DEBUGLCP) || defined(DEBUGIPCP) || defined(DEBUGUPAP) \ - || defined(DEBUGCHAP) || defined(DEBUG) || defined(DEBUGIPV6CP) -#define LOG_PPP LOG_LOCAL2 -#else -#define LOG_PPP LOG_DAEMON -#endif -#endif /* LOG_PPP */ - -#ifdef DEBUGMAIN -#define MAINDEBUG(x) if (debug) dbglog x -#else -#define MAINDEBUG(x) -#endif - -#ifdef DEBUGSYS -#define SYSDEBUG(x) if (debug) dbglog x -#else -#define SYSDEBUG(x) -#endif - -#ifdef DEBUGFSM -#define FSMDEBUG(x) if (debug) dbglog x -#else -#define FSMDEBUG(x) -#endif - -#ifdef DEBUGLCP -#define LCPDEBUG(x) if (debug) dbglog x -#else -#define LCPDEBUG(x) -#endif - -#ifdef DEBUGIPCP -#define IPCPDEBUG(x) if (debug) dbglog x -#else -#define IPCPDEBUG(x) -#endif - -#ifdef DEBUGIPV6CP -#define IPV6CPDEBUG(x) if (debug) dbglog x -#else -#define IPV6CPDEBUG(x) -#endif - -#ifdef DEBUGUPAP -#define UPAPDEBUG(x) if (debug) dbglog x -#else -#define UPAPDEBUG(x) -#endif - -#ifdef DEBUGCHAP -#define CHAPDEBUG(x) if (debug) dbglog x -#else -#define CHAPDEBUG(x) -#endif - -#ifdef DEBUGIPXCP -#define IPXCPDEBUG(x) if (debug) dbglog x -#else -#define IPXCPDEBUG(x) -#endif - -#ifndef SIGTYPE -#if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) -#define SIGTYPE void -#else -#define SIGTYPE int -#endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */ -#endif /* SIGTYPE */ - -#ifndef MIN -#define MIN(a, b) ((a) < (b)? (a): (b)) -#endif -#ifndef MAX -#define MAX(a, b) ((a) > (b)? (a): (b)) -#endif - -#endif /* __PPP_H__ */ diff --git a/mdk-stage1/ppp/pppd/sys-linux.c b/mdk-stage1/ppp/pppd/sys-linux.c deleted file mode 100644 index d341bb3de..000000000 --- a/mdk-stage1/ppp/pppd/sys-linux.c +++ /dev/null @@ -1,2672 +0,0 @@ -/* - * sys-linux.c - System-dependent procedures for setting up - * PPP interfaces on Linux systems - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#include <sys/ioctl.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/time.h> -#include <sys/errno.h> -#include <sys/file.h> -#include <sys/stat.h> -#include <sys/utsname.h> -#include <sys/sysmacros.h> - -#include <stdio.h> -#include <stdlib.h> -#include <syslog.h> -#include <string.h> -#include <time.h> -#include <memory.h> -#include <utmp.h> -#include <mntent.h> -#include <signal.h> -#include <fcntl.h> -#include <ctype.h> -#include <termios.h> -#include <unistd.h> - -/* This is in netdevice.h. However, this compile will fail miserably if - you attempt to include netdevice.h because it has so many references - to __memcpy functions which it should not attempt to do. So, since I - really don't use it, but it must be defined, define it now. */ - -#ifndef MAX_ADDR_LEN -#define MAX_ADDR_LEN 7 -#endif - -#if __GLIBC__ >= 2 -#include <asm/types.h> /* glibc 2 conflicts with linux/types.h */ -#include <net/if.h> -#include <net/if_arp.h> -#include <net/route.h> -#include <netinet/if_ether.h> -#else -#include <linux/types.h> -#include <linux/if.h> -#include <linux/if_arp.h> -#include <linux/route.h> -#include <linux/if_ether.h> -#endif -#include <netinet/in.h> -#include <arpa/inet.h> - -#include <linux/ppp_defs.h> -#include <linux/if_ppp.h> - -#include "pppd.h" -#include "fsm.h" -#include "ipcp.h" - -#ifdef IPX_CHANGE -#include "ipxcp.h" -#if __GLIBC__ >= 2 && \ - !(defined(__powerpc__) && __GLIBC__ == 2 && __GLIBC_MINOR__ == 0) -#include <netipx/ipx.h> -#else -#include <linux/ipx.h> -#endif -#endif /* IPX_CHANGE */ - -#ifdef PPP_FILTER -#include <net/bpf.h> -#include <linux/filter.h> -#endif /* PPP_FILTER */ - -#ifdef LOCKLIB -#include <sys/locks.h> -#endif - -#ifdef INET6 -#ifndef _LINUX_IN6_H -/* - * This is in linux/include/net/ipv6.h. - */ - -struct in6_ifreq { - struct in6_addr ifr6_addr; - __u32 ifr6_prefixlen; - unsigned int ifr6_ifindex; -}; -#endif - -#define IN6_LLADDR_FROM_EUI64(sin6, eui64) do { \ - memset(&sin6.s6_addr, 0, sizeof(struct in6_addr)); \ - sin6.s6_addr16[0] = htons(0xfe80); \ - eui64_copy(eui64, sin6.s6_addr32[2]); \ - } while (0) - -#endif /* INET6 */ - -/* We can get an EIO error on an ioctl if the modem has hung up */ -#define ok_error(num) ((num)==EIO) - -static int tty_disc = N_TTY; /* The TTY discipline */ -static int ppp_disc = N_PPP; /* The PPP discpline */ -static int initfdflags = -1; /* Initial file descriptor flags for fd */ -static int ppp_fd = -1; /* fd which is set to PPP discipline */ -static int sock_fd = -1; /* socket for doing interface ioctls */ -static int slave_fd = -1; -static int master_fd = -1; -#ifdef INET6 -static int sock6_fd = -1; -#endif /* INET6 */ -static int ppp_dev_fd = -1; /* fd for /dev/ppp (new style driver) */ -static int chindex; /* channel index (new style driver) */ - -static fd_set in_fds; /* set of fds that wait_input waits for */ -static int max_in_fd; /* highest fd set in in_fds */ - -static int has_proxy_arp = 0; -static int driver_version = 0; -static int driver_modification = 0; -static int driver_patch = 0; -static int driver_is_old = 0; -static int restore_term = 0; /* 1 => we've munged the terminal */ -static struct termios inittermios; /* Initial TTY termios */ - -static int new_style_driver = 0; - -static char loop_name[20]; -static unsigned char inbuf[512]; /* buffer for chars read from loopback */ - -static int if_is_up; /* Interface has been marked up */ -static u_int32_t default_route_gateway; /* Gateway for default route added */ -static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */ -static char proxy_arp_dev[16]; /* Device for proxy arp entry */ -static u_int32_t our_old_addr; /* for detecting address changes */ -static int dynaddr_set; /* 1 if ip_dynaddr set */ -static int looped; /* 1 if using loop */ -static int link_mtu; /* mtu for the link (not bundle) */ - -static struct utsname utsname; /* for the kernel version */ -static int kernel_version; -#define KVERSION(j,n,p) ((j)*1000000 + (n)*1000 + (p)) - -#define MAX_IFS 100 - -#define FLAGS_GOOD (IFF_UP | IFF_BROADCAST) -#define FLAGS_MASK (IFF_UP | IFF_BROADCAST | \ - IFF_POINTOPOINT | IFF_LOOPBACK | IFF_NOARP) - -#define SIN_ADDR(x) (((struct sockaddr_in *) (&(x)))->sin_addr.s_addr) - -/* Prototypes for procedures local to this file. */ -static int get_flags (int fd); -static void set_flags (int fd, int flags); -static int translate_speed (int bps); -static int baud_rate_of (int speed); -static void close_route_table (void); -static int open_route_table (void); -static int read_route_table (struct rtentry *rt); -static int defaultroute_exists (struct rtentry *rt); -static int get_ether_addr (u_int32_t ipaddr, struct sockaddr *hwaddr, - char *name, int namelen); -static void decode_version (char *buf, int *version, int *mod, int *patch); -static int set_kdebugflag(int level); -static int ppp_registered(void); -static int make_ppp_unit(void); -static void restore_loop(void); /* Transfer ppp unit back to loopback */ - -extern u_char inpacket_buf[]; /* borrowed from main.c */ - -/* - * SET_SA_FAMILY - set the sa_family field of a struct sockaddr, - * if it exists. - */ - -#define SET_SA_FAMILY(addr, family) \ - memset ((char *) &(addr), '\0', sizeof(addr)); \ - addr.sa_family = (family); - -/* - * Determine if the PPP connection should still be present. - */ - -extern int hungup; - -/* new_fd is the fd of a tty */ -static void set_ppp_fd (int new_fd) -{ - SYSDEBUG ((LOG_DEBUG, "setting ppp_fd to %d\n", new_fd)); - ppp_fd = new_fd; - if (!new_style_driver) - ppp_dev_fd = new_fd; -} - -static int still_ppp(void) -{ - if (new_style_driver) - return !hungup && ppp_fd >= 0; - if (!hungup || ppp_fd == slave_fd) - return 1; - if (slave_fd >= 0) { - set_ppp_fd(slave_fd); - return 1; - } - return 0; -} - -/******************************************************************** - * - * Functions to read and set the flags value in the device driver - */ - -static int get_flags (int fd) -{ - int flags; - - if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &flags) < 0) { - if ( ok_error (errno) ) - flags = 0; - else - fatal("ioctl(PPPIOCGFLAGS): %m"); - } - - SYSDEBUG ((LOG_DEBUG, "get flags = %x\n", flags)); - return flags; -} - -/********************************************************************/ - -static void set_flags (int fd, int flags) -{ - SYSDEBUG ((LOG_DEBUG, "set flags = %x\n", flags)); - - if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &flags) < 0) { - if (! ok_error (errno) ) - fatal("ioctl(PPPIOCSFLAGS, %x): %m", flags, errno); - } -} - -/******************************************************************** - * - * sys_init - System-dependent initialization. - */ - -void sys_init(void) -{ - int flags; - - if (new_style_driver) { - ppp_dev_fd = open("/dev/ppp", O_RDWR); - if (ppp_dev_fd < 0) - fatal("Couldn't open /dev/ppp: %m"); - flags = fcntl(ppp_dev_fd, F_GETFL); - if (flags == -1 - || fcntl(ppp_dev_fd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("Couldn't set /dev/ppp to nonblock: %m"); - } - - /* Get an internet socket for doing socket ioctls. */ - sock_fd = socket(AF_INET, SOCK_DGRAM, 0); - if (sock_fd < 0) - fatal("Couldn't create IP socket: %m(%d)", errno); - -#ifdef INET6 - sock6_fd = socket(AF_INET6, SOCK_DGRAM, 0); - if (sock6_fd < 0) - sock6_fd = -errno; /* save errno for later */ -#endif - - FD_ZERO(&in_fds); - max_in_fd = 0; -} - -/******************************************************************** - * - * sys_cleanup - restore any system state we modified before exiting: - * mark the interface down, delete default route and/or proxy arp entry. - * This shouldn't call die() because it's called from die(). - */ - -void sys_cleanup(void) -{ -/* - * Take down the device - */ - if (if_is_up) { - if_is_up = 0; - sifdown(0); - } -/* - * Delete any routes through the device. - */ - if (default_route_gateway != 0) - cifdefaultroute(0, 0, default_route_gateway); - - if (has_proxy_arp) - cifproxyarp(0, proxy_arp_addr); -} - -/******************************************************************** - * - * sys_close - Clean up in a child process before execing. - */ -void -sys_close(void) -{ - if (new_style_driver) - close(ppp_dev_fd); - if (sock_fd >= 0) - close(sock_fd); - if (slave_fd >= 0) - close(slave_fd); - if (master_fd >= 0) - close(master_fd); - closelog(); -} - -/******************************************************************** - * - * set_kdebugflag - Define the debugging level for the kernel - */ - -static int set_kdebugflag (int requested_level) -{ - if (new_style_driver && ifunit < 0) - return 1; - if (ioctl(ppp_dev_fd, PPPIOCSDEBUG, &requested_level) < 0) { - if ( ! ok_error (errno) ) - error("ioctl(PPPIOCSDEBUG): %m"); - return (0); - } - SYSDEBUG ((LOG_INFO, "set kernel debugging level to %d", - requested_level)); - return (1); -} - -/******************************************************************** - * - * tty_establish_ppp - Turn the serial port into a ppp interface. - */ - -int tty_establish_ppp (int tty_fd) -{ - int x; - int fd = -1; - -/* - * Ensure that the tty device is in exclusive mode. - */ - if (ioctl(tty_fd, TIOCEXCL, 0) < 0) { - if ( ! ok_error ( errno )) - warn("Couldn't make tty exclusive: %m"); - } -/* - * Demand mode - prime the old ppp device to relinquish the unit. - */ - if (!new_style_driver && looped - && ioctl(slave_fd, PPPIOCXFERUNIT, 0) < 0) { - error("ioctl(transfer ppp unit): %m"); - return -1; - } -/* - * Set the current tty to the PPP discpline - */ - -#ifndef N_SYNC_PPP -#define N_SYNC_PPP 14 -#endif - ppp_disc = (new_style_driver && sync_serial)? N_SYNC_PPP: N_PPP; - if (ioctl(tty_fd, TIOCSETD, &ppp_disc) < 0) { - if ( ! ok_error (errno) ) { - error("Couldn't set tty to PPP discipline: %m"); - return -1; - } - } - - if (new_style_driver) { - /* Open another instance of /dev/ppp and connect the channel to it */ - int flags; - - if (ioctl(tty_fd, PPPIOCGCHAN, &chindex) == -1) { - error("Couldn't get channel number: %m"); - goto err; - } - dbglog("using channel %d", chindex); - fd = open("/dev/ppp", O_RDWR); - if (fd < 0) { - error("Couldn't reopen /dev/ppp: %m"); - goto err; - } - if (ioctl(fd, PPPIOCATTCHAN, &chindex) < 0) { - error("Couldn't attach to channel %d: %m", chindex); - goto err_close; - } - flags = fcntl(fd, F_GETFL); - if (flags == -1 || fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("Couldn't set /dev/ppp (channel) to nonblock: %m"); - set_ppp_fd(fd); - - if (!looped) - ifunit = -1; - if (!looped && !multilink) { - /* - * Create a new PPP unit. - */ - if (make_ppp_unit() < 0) - goto err_close; - } - - if (looped) - set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) & ~SC_LOOP_TRAFFIC); - - if (!multilink) { - add_fd(ppp_dev_fd); - if (ioctl(fd, PPPIOCCONNECT, &ifunit) < 0) { - error("Couldn't attach to PPP unit %d: %m", ifunit); - goto err_close; - } - } - - } else { - /* - * Old-style driver: find out which interface we were given. - */ - set_ppp_fd (tty_fd); - if (ioctl(tty_fd, PPPIOCGUNIT, &x) < 0) { - if (ok_error (errno)) - goto err; - fatal("ioctl(PPPIOCGUNIT): %m(%d)", errno); - } - /* Check that we got the same unit again. */ - if (looped && x != ifunit) - fatal("transfer_ppp failed: wanted unit %d, got %d", ifunit, x); - ifunit = x; - - /* - * Fetch the initial file flags and reset blocking mode on the file. - */ - initfdflags = fcntl(tty_fd, F_GETFL); - if (initfdflags == -1 || - fcntl(tty_fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) { - if ( ! ok_error (errno)) - warn("Couldn't set device to non-blocking mode: %m"); - } - } - - looped = 0; - - /* - * Enable debug in the driver if requested. - */ - if (!looped) - set_kdebugflag (kdebugflag); - -#define SC_RCVB (SC_RCV_B7_0 | SC_RCV_B7_1 | SC_RCV_EVNP | SC_RCV_ODDP) -#define SC_LOGB (SC_DEBUG | SC_LOG_INPKT | SC_LOG_OUTPKT | SC_LOG_RAWIN \ - | SC_LOG_FLUSH) - - set_flags(ppp_fd, ((get_flags(ppp_fd) & ~(SC_RCVB | SC_LOGB)) - | ((kdebugflag * SC_DEBUG) & SC_LOGB))); - - SYSDEBUG ((LOG_NOTICE, "Using version %d.%d.%d of PPP driver", - driver_version, driver_modification, driver_patch)); - - return ppp_fd; - - err_close: - close(fd); - err: - if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0 && !ok_error(errno)) - warn("Couldn't reset tty to normal line discipline: %m"); - return -1; -} - -/******************************************************************** - * - * tty_disestablish_ppp - Restore the serial port to normal operation, - * and reconnect the ppp unit to the loopback if in demand mode. - * This shouldn't call die() because it's called from die(). - */ - -void tty_disestablish_ppp(int tty_fd) -{ - if (demand) - restore_loop(); - if (!hungup) { -/* - * Flush the tty output buffer so that the TIOCSETD doesn't hang. - */ - if (tcflush(tty_fd, TCIOFLUSH) < 0) - warn("tcflush failed: %m"); -/* - * Restore the previous line discipline - */ - if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0) { - if ( ! ok_error (errno)) - error("ioctl(TIOCSETD, N_TTY): %m"); - } - - if (ioctl(tty_fd, TIOCNXCL, 0) < 0) { - if ( ! ok_error (errno)) - warn("ioctl(TIOCNXCL): %m(%d)", errno); - } - - /* Reset non-blocking mode on fd. */ - if (initfdflags != -1 && fcntl(tty_fd, F_SETFL, initfdflags) < 0) { - if ( ! ok_error (errno)) - warn("Couldn't restore device fd flags: %m"); - } - } - initfdflags = -1; - - if (new_style_driver) { - close(ppp_fd); - ppp_fd = -1; - if (!looped && ifunit >= 0 && ioctl(ppp_dev_fd, PPPIOCDETACH) < 0) - error("Couldn't release PPP unit: %m"); - if (!multilink) - remove_fd(ppp_dev_fd); - } -} - -/* - * make_ppp_unit - make a new ppp unit for ppp_dev_fd. - * Assumes new_style_driver. - */ -static int make_ppp_unit() -{ - int x; - - ifunit = req_unit; - x = ioctl(ppp_dev_fd, PPPIOCNEWUNIT, &ifunit); - if (x < 0 && req_unit >= 0 && errno == EEXIST) { - warn("Couldn't allocate PPP unit %d as it is already in use"); - ifunit = -1; - x = ioctl(ppp_dev_fd, PPPIOCNEWUNIT, &ifunit); - } - if (x < 0) - error("Couldn't create new ppp unit: %m"); - return x; -} - -/* - * cfg_bundle - configure the existing bundle. - * Used in demand mode. - */ -void cfg_bundle(int mrru, int mtru, int rssn, int tssn) -{ - int flags; - - if (!new_style_driver) - return; - - /* set the mrru, mtu and flags */ - if (ioctl(ppp_dev_fd, PPPIOCSMRRU, &mrru) < 0) - error("Couldn't set MRRU: %m"); - flags = get_flags(ppp_dev_fd); - flags &= ~(SC_MP_SHORTSEQ | SC_MP_XSHORTSEQ); - flags |= (rssn? SC_MP_SHORTSEQ: 0) | (tssn? SC_MP_XSHORTSEQ: 0) - | (mrru? SC_MULTILINK: 0); - - set_flags(ppp_dev_fd, flags); - - /* connect up the channel */ - if (ioctl(ppp_fd, PPPIOCCONNECT, &ifunit) < 0) - fatal("Couldn't attach to PPP unit %d: %m", ifunit); - add_fd(ppp_dev_fd); -} - -/* - * make_new_bundle - create a new PPP unit (i.e. a bundle) - * and connect our channel to it. This should only get called - * if `multilink' was set at the time establish_ppp was called. - * In demand mode this uses our existing bundle instead of making - * a new one. - */ -void make_new_bundle(int mrru, int mtru, int rssn, int tssn) -{ - if (!new_style_driver) - return; - - /* make us a ppp unit */ - if (make_ppp_unit() < 0) - die(1); - - /* set the mrru and flags */ - cfg_bundle(mrru, mtru, rssn, tssn); -} - -/* - * bundle_attach - attach our link to a given PPP unit. - * We assume the unit is controlled by another pppd. - */ -int bundle_attach(int ifnum) -{ - if (!new_style_driver) - return -1; - - if (ioctl(ppp_dev_fd, PPPIOCATTACH, &ifnum) < 0) { - if (errno == ENXIO) - return 0; /* doesn't still exist */ - fatal("Couldn't attach to interface unit %d: %m\n", ifnum); - } - if (ioctl(ppp_fd, PPPIOCCONNECT, &ifnum) < 0) - fatal("Couldn't connect to interface unit %d: %m", ifnum); - set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_MULTILINK); - - ifunit = ifnum; - return 1; -} - -/******************************************************************** - * - * clean_check - Fetch the flags for the device and generate - * appropriate error messages. - */ -void clean_check(void) -{ - int x; - char *s; - - if (still_ppp()) { - if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) { - s = NULL; - switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) { - case SC_RCV_B7_0: - s = "all had bit 7 set to 1"; - break; - - case SC_RCV_B7_1: - s = "all had bit 7 set to 0"; - break; - - case SC_RCV_EVNP: - s = "all had odd parity"; - break; - - case SC_RCV_ODDP: - s = "all had even parity"; - break; - } - - if (s != NULL) { - warn("Receive serial link is not 8-bit clean:"); - warn("Problem: %s", s); - } - } - } -} - - -/* - * List of valid speeds. - */ - -struct speed { - int speed_int, speed_val; -} speeds[] = { -#ifdef B50 - { 50, B50 }, -#endif -#ifdef B75 - { 75, B75 }, -#endif -#ifdef B110 - { 110, B110 }, -#endif -#ifdef B134 - { 134, B134 }, -#endif -#ifdef B150 - { 150, B150 }, -#endif -#ifdef B200 - { 200, B200 }, -#endif -#ifdef B300 - { 300, B300 }, -#endif -#ifdef B600 - { 600, B600 }, -#endif -#ifdef B1200 - { 1200, B1200 }, -#endif -#ifdef B1800 - { 1800, B1800 }, -#endif -#ifdef B2000 - { 2000, B2000 }, -#endif -#ifdef B2400 - { 2400, B2400 }, -#endif -#ifdef B3600 - { 3600, B3600 }, -#endif -#ifdef B4800 - { 4800, B4800 }, -#endif -#ifdef B7200 - { 7200, B7200 }, -#endif -#ifdef B9600 - { 9600, B9600 }, -#endif -#ifdef B19200 - { 19200, B19200 }, -#endif -#ifdef B38400 - { 38400, B38400 }, -#endif -#ifdef B57600 - { 57600, B57600 }, -#endif -#ifdef B76800 - { 76800, B76800 }, -#endif -#ifdef B115200 - { 115200, B115200 }, -#endif -#ifdef EXTA - { 19200, EXTA }, -#endif -#ifdef EXTB - { 38400, EXTB }, -#endif -#ifdef B230400 - { 230400, B230400 }, -#endif -#ifdef B460800 - { 460800, B460800 }, -#endif -#ifdef B921600 - { 921600, B921600 }, -#endif - { 0, 0 } -}; - -/******************************************************************** - * - * Translate from bits/second to a speed_t. - */ - -static int translate_speed (int bps) -{ - struct speed *speedp; - - if (bps != 0) { - for (speedp = speeds; speedp->speed_int; speedp++) { - if (bps == speedp->speed_int) - return speedp->speed_val; - } - warn("speed %d not supported", bps); - } - return 0; -} - -/******************************************************************** - * - * Translate from a speed_t to bits/second. - */ - -static int baud_rate_of (int speed) -{ - struct speed *speedp; - - if (speed != 0) { - for (speedp = speeds; speedp->speed_int; speedp++) { - if (speed == speedp->speed_val) - return speedp->speed_int; - } - } - return 0; -} - -/******************************************************************** - * - * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity, - * at the requested speed, etc. If `local' is true, set CLOCAL - * regardless of whether the modem option was specified. - */ - -void set_up_tty(int tty_fd, int local) -{ - int speed; - struct termios tios; - - setdtr(tty_fd, 1); - if (tcgetattr(tty_fd, &tios) < 0) { - if (!ok_error(errno)) - fatal("tcgetattr: %m(%d)", errno); - return; - } - - if (!restore_term) - inittermios = tios; - - tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); - tios.c_cflag |= CS8 | CREAD | HUPCL; - - tios.c_iflag = IGNBRK | IGNPAR; - tios.c_oflag = 0; - tios.c_lflag = 0; - tios.c_cc[VMIN] = 1; - tios.c_cc[VTIME] = 0; - - if (local || !modem) - tios.c_cflag ^= (CLOCAL | HUPCL); - - switch (crtscts) { - case 1: - tios.c_cflag |= CRTSCTS; - break; - - case -2: - tios.c_iflag |= IXON | IXOFF; - tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */ - tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */ - break; - - case -1: - tios.c_cflag &= ~CRTSCTS; - break; - - default: - break; - } - - speed = translate_speed(inspeed); - if (speed) { - cfsetospeed (&tios, speed); - cfsetispeed (&tios, speed); - } -/* - * We can't proceed if the serial port speed is B0, - * since that implies that the serial port is disabled. - */ - else { - speed = cfgetospeed(&tios); - if (speed == B0) - fatal("Baud rate for %s is 0; need explicit baud rate", devnam); - } - - if (tcsetattr(tty_fd, TCSAFLUSH, &tios) < 0) - if (!ok_error(errno)) - fatal("tcsetattr: %m"); - - baud_rate = baud_rate_of(speed); - restore_term = 1; -} - -/******************************************************************** - * - * setdtr - control the DTR line on the serial port. - * This is called from die(), so it shouldn't call die(). - */ - -void setdtr (int tty_fd, int on) -{ - int modembits = TIOCM_DTR; - - ioctl(tty_fd, (on ? TIOCMBIS : TIOCMBIC), &modembits); -} - -/******************************************************************** - * - * restore_tty - restore the terminal to the saved settings. - */ - -void restore_tty (int tty_fd) -{ - if (restore_term) { - restore_term = 0; -/* - * Turn off echoing, because otherwise we can get into - * a loop with the tty and the modem echoing to each other. - * We presume we are the sole user of this tty device, so - * when we close it, it will revert to its defaults anyway. - */ - if (!default_device) - inittermios.c_lflag &= ~(ECHO | ECHONL); - - if (tcsetattr(tty_fd, TCSAFLUSH, &inittermios) < 0) { - if (! ok_error (errno)) - warn("tcsetattr: %m"); - } - } -} - -/******************************************************************** - * - * output - Output PPP packet. - */ - -void output (int unit, unsigned char *p, int len) -{ - int fd = ppp_fd; - int proto; - - if (debug) - dbglog("sent %P", p, len); - - if (len < PPP_HDRLEN) - return; - if (new_style_driver) { - p += 2; - len -= 2; - proto = (p[0] << 8) + p[1]; - if (ifunit >= 0 && !(proto >= 0xc000 || proto == PPP_CCPFRAG)) - fd = ppp_dev_fd; - } - if (write(fd, p, len) < 0) { - if (errno == EWOULDBLOCK || errno == ENOBUFS - || errno == ENXIO || errno == EIO || errno == EINTR) - warn("write: warning: %m (%d)", errno); - else - error("write: %m (%d)", errno); - } -} - -/******************************************************************** - * - * wait_input - wait until there is data available, - * for the length of time specified by *timo (indefinite - * if timo is NULL). - */ - -void wait_input(struct timeval *timo) -{ - fd_set ready, exc; - int n; - - ready = in_fds; - exc = in_fds; - n = select(max_in_fd + 1, &ready, NULL, &exc, timo); - if (n < 0 && errno != EINTR) - fatal("select: %m(%d)", errno); -} - -/* - * add_fd - add an fd to the set that wait_input waits for. - */ -void add_fd(int fd) -{ - FD_SET(fd, &in_fds); - if (fd > max_in_fd) - max_in_fd = fd; -} - -/* - * remove_fd - remove an fd from the set that wait_input waits for. - */ -void remove_fd(int fd) -{ - FD_CLR(fd, &in_fds); -} - - -/******************************************************************** - * - * read_packet - get a PPP packet from the serial device. - */ - -int read_packet (unsigned char *buf) -{ - int len, nr; - - len = PPP_MRU + PPP_HDRLEN; - if (new_style_driver) { - *buf++ = PPP_ALLSTATIONS; - *buf++ = PPP_UI; - len -= 2; - } - nr = -1; - if (ppp_fd >= 0) { - nr = read(ppp_fd, buf, len); - if (nr < 0 && errno != EWOULDBLOCK && errno != EIO && errno != EINTR) - error("read: %m"); - if (nr < 0 && errno == ENXIO) - return 0; - } - if (nr < 0 && new_style_driver && ifunit >= 0) { - /* N.B. we read ppp_fd first since LCP packets come in there. */ - nr = read(ppp_dev_fd, buf, len); - if (nr < 0 && errno != EWOULDBLOCK && errno != EIO && errno != EINTR) - error("read /dev/ppp: %m"); - if (nr < 0 && errno == ENXIO) - return 0; - } - return (new_style_driver && nr > 0)? nr+2: nr; -} - -/******************************************************************** - * - * get_loop_output - get outgoing packets from the ppp device, - * and detect when we want to bring the real link up. - * Return value is 1 if we need to bring up the link, 0 otherwise. - */ -int -get_loop_output(void) -{ - int rv = 0; - int n; - - if (new_style_driver) { - while ((n = read_packet(inpacket_buf)) > 0) - if (loop_frame(inpacket_buf, n)) - rv = 1; - return rv; - } - - while ((n = read(master_fd, inbuf, sizeof(inbuf))) > 0) - if (loop_chars(inbuf, n)) - rv = 1; - - if (n == 0) - fatal("eof on loopback"); - - if (errno != EWOULDBLOCK) - fatal("read from loopback: %m(%d)", errno); - - return rv; -} - -/* - * netif_set_mtu - set the MTU on the PPP network interface. - */ -void -netif_set_mtu(int unit, int mtu) -{ - struct ifreq ifr; - - SYSDEBUG ((LOG_DEBUG, "netif_set_mtu: mtu = %d\n", mtu)); - - memset (&ifr, '\0', sizeof (ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - ifr.ifr_mtu = mtu; - - if (ifunit >= 0 && ioctl(sock_fd, SIOCSIFMTU, (caddr_t) &ifr) < 0) - fatal("ioctl(SIOCSIFMTU): %m"); -} - -/******************************************************************** - * - * tty_send_config - configure the transmit characteristics of - * the ppp interface. - */ - -void tty_send_config (int mtu,u_int32_t asyncmap,int pcomp,int accomp) -{ - u_int x; - -/* - * Set the asyncmap and other parameters for the ppp device - */ - if (!still_ppp()) - return; - link_mtu = mtu; - SYSDEBUG ((LOG_DEBUG, "send_config: asyncmap = %lx\n", asyncmap)); - if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) { - if (!ok_error(errno)) - fatal("ioctl(PPPIOCSASYNCMAP): %m(%d)", errno); - return; - } - - x = get_flags(ppp_fd); - x = pcomp ? x | SC_COMP_PROT : x & ~SC_COMP_PROT; - x = accomp ? x | SC_COMP_AC : x & ~SC_COMP_AC; - x = sync_serial ? x | SC_SYNC : x & ~SC_SYNC; - set_flags(ppp_fd, x); -} - -/******************************************************************** - * - * tty_set_xaccm - set the extended transmit ACCM for the interface. - */ - -void tty_set_xaccm (ext_accm accm) -{ - SYSDEBUG ((LOG_DEBUG, "set_xaccm: %08lx %08lx %08lx %08lx\n", - accm[0], accm[1], accm[2], accm[3])); - - if (!still_ppp()) - return; - if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY) { - if ( ! ok_error (errno)) - warn("ioctl(set extended ACCM): %m(%d)", errno); - } -} - -/******************************************************************** - * - * tty_recv_config - configure the receive-side characteristics of - * the ppp interface. - */ - -void tty_recv_config (int mru,u_int32_t asyncmap,int pcomp,int accomp) -{ - SYSDEBUG ((LOG_DEBUG, "recv_config: mru = %d\n", mru)); -/* - * If we were called because the link has gone down then there is nothing - * which may be done. Just return without incident. - */ - if (!still_ppp()) - return; -/* - * Set the receiver parameters - */ - if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) { - if ( ! ok_error (errno)) - error("ioctl(PPPIOCSMRU): %m(%d)", errno); - } - if (new_style_driver && ifunit >= 0 - && ioctl(ppp_dev_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) - error("Couldn't set MRU in generic PPP layer: %m"); - - SYSDEBUG ((LOG_DEBUG, "recv_config: asyncmap = %lx\n", asyncmap)); - if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) { - if (!ok_error(errno)) - error("ioctl(PPPIOCSRASYNCMAP): %m(%d)", errno); - } -} - -/******************************************************************** - * - * ccp_test - ask kernel whether a given compression method - * is acceptable for use. - */ - -int ccp_test (int unit, u_char *opt_ptr, int opt_len, int for_transmit) -{ - struct ppp_option_data data; - - memset (&data, '\0', sizeof (data)); - data.ptr = opt_ptr; - data.length = opt_len; - data.transmit = for_transmit; - - if (ioctl(ppp_dev_fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0) - return 1; - - return (errno == ENOBUFS)? 0: -1; -} - -/******************************************************************** - * - * ccp_flags_set - inform kernel about the current state of CCP. - */ - -void ccp_flags_set (int unit, int isopen, int isup) -{ - if (still_ppp()) { - int x = get_flags(ppp_dev_fd); - x = isopen? x | SC_CCP_OPEN : x &~ SC_CCP_OPEN; - x = isup? x | SC_CCP_UP : x &~ SC_CCP_UP; - set_flags (ppp_dev_fd, x); - } -} - -#ifdef PPP_FILTER -/* - * set_filters - set the active and pass filters in the kernel driver. - */ -int set_filters(struct bpf_program *pass, struct bpf_program *active) -{ - struct sock_fprog fp; - - fp.len = pass->bf_len; - fp.filter = (struct sock_filter *) pass->bf_insns; - if (ioctl(ppp_dev_fd, PPPIOCSPASS, &fp) < 0) { - if (errno == ENOTTY) - warn("kernel does not support PPP filtering"); - else - error("Couldn't set pass-filter in kernel: %m"); - return 0; - } - fp.len = active->bf_len; - fp.filter = (struct sock_filter *) active->bf_insns; - if (ioctl(ppp_dev_fd, PPPIOCSACTIVE, &fp) < 0) { - error("Couldn't set active-filter in kernel: %m"); - return 0; - } - return 1; -} -#endif /* PPP_FILTER */ - -/******************************************************************** - * - * get_idle_time - return how long the link has been idle. - */ -int -get_idle_time(u, ip) - int u; - struct ppp_idle *ip; -{ - return ioctl(ppp_dev_fd, PPPIOCGIDLE, ip) >= 0; -} - -/******************************************************************** - * - * get_ppp_stats - return statistics for the link. - */ -int -get_ppp_stats(u, stats) - int u; - struct pppd_stats *stats; -{ - struct ifpppstatsreq req; - - memset (&req, 0, sizeof (req)); - - req.stats_ptr = (caddr_t) &req.stats; - strlcpy(req.ifr__name, ifname, sizeof(req.ifr__name)); - if (ioctl(sock_fd, SIOCGPPPSTATS, &req) < 0) { - error("Couldn't get PPP statistics: %m"); - return 0; - } - stats->bytes_in = req.stats.p.ppp_ibytes; - stats->bytes_out = req.stats.p.ppp_obytes; - return 1; -} - -/******************************************************************** - * - * ccp_fatal_error - returns 1 if decompression was disabled as a - * result of an error detected after decompression of a packet, - * 0 otherwise. This is necessary because of patent nonsense. - */ - -int ccp_fatal_error (int unit) -{ - int x = get_flags(ppp_dev_fd); - - return x & SC_DC_FERROR; -} - -/******************************************************************** - * - * path_to_procfs - find the path to the proc file system mount point - */ -static char proc_path[MAXPATHLEN]; -static int proc_path_len; - -static char *path_to_procfs(const char *tail) -{ - struct mntent *mntent; - FILE *fp; - - if (proc_path_len == 0) { - /* Default the mount location of /proc */ - strlcpy (proc_path, "/proc", sizeof(proc_path)); - proc_path_len = 5; - fp = fopen(MOUNTED, "r"); - if (fp != NULL) { - while ((mntent = getmntent(fp)) != NULL) { - if (strcmp(mntent->mnt_type, MNTTYPE_IGNORE) == 0) - continue; - if (strcmp(mntent->mnt_type, "proc") == 0) { - strlcpy(proc_path, mntent->mnt_dir, sizeof(proc_path)); - proc_path_len = strlen(proc_path); - break; - } - } - fclose (fp); - } - } - - strlcpy(proc_path + proc_path_len, tail, - sizeof(proc_path) - proc_path_len); - return proc_path; -} - -/* - * /proc/net/route parsing stuff. - */ -#define ROUTE_MAX_COLS 12 -FILE *route_fd = (FILE *) 0; -static char route_buffer[512]; -static int route_dev_col, route_dest_col, route_gw_col; -static int route_flags_col, route_mask_col; -static int route_num_cols; - -static int open_route_table (void); -static void close_route_table (void); -static int read_route_table (struct rtentry *rt); - -/******************************************************************** - * - * close_route_table - close the interface to the route table - */ - -static void close_route_table (void) -{ - if (route_fd != (FILE *) 0) { - fclose (route_fd); - route_fd = (FILE *) 0; - } -} - -/******************************************************************** - * - * open_route_table - open the interface to the route table - */ -static char route_delims[] = " \t\n"; - -static int open_route_table (void) -{ - char *path; - - close_route_table(); - - path = path_to_procfs("/net/route"); - route_fd = fopen (path, "r"); - if (route_fd == NULL) { - error("can't open routing table %s: %m", path); - return 0; - } - - route_dev_col = 0; /* default to usual columns */ - route_dest_col = 1; - route_gw_col = 2; - route_flags_col = 3; - route_mask_col = 7; - route_num_cols = 8; - - /* parse header line */ - if (fgets(route_buffer, sizeof(route_buffer), route_fd) != 0) { - char *p = route_buffer, *q; - int col; - for (col = 0; col < ROUTE_MAX_COLS; ++col) { - int used = 1; - if ((q = strtok(p, route_delims)) == 0) - break; - if (strcasecmp(q, "iface") == 0) - route_dev_col = col; - else if (strcasecmp(q, "destination") == 0) - route_dest_col = col; - else if (strcasecmp(q, "gateway") == 0) - route_gw_col = col; - else if (strcasecmp(q, "flags") == 0) - route_flags_col = col; - else if (strcasecmp(q, "mask") == 0) - route_mask_col = col; - else - used = 0; - if (used && col >= route_num_cols) - route_num_cols = col + 1; - p = NULL; - } - } - - return 1; -} - -/******************************************************************** - * - * read_route_table - read the next entry from the route table - */ - -static int read_route_table(struct rtentry *rt) -{ - char *cols[ROUTE_MAX_COLS], *p; - int col; - - memset (rt, '\0', sizeof (struct rtentry)); - - if (fgets (route_buffer, sizeof (route_buffer), route_fd) == (char *) 0) - return 0; - - p = route_buffer; - for (col = 0; col < route_num_cols; ++col) { - cols[col] = strtok(p, route_delims); - if (cols[col] == NULL) - return 0; /* didn't get enough columns */ - p = NULL; - } - - SIN_ADDR(rt->rt_dst) = strtoul(cols[route_dest_col], NULL, 16); - SIN_ADDR(rt->rt_gateway) = strtoul(cols[route_gw_col], NULL, 16); - SIN_ADDR(rt->rt_genmask) = strtoul(cols[route_mask_col], NULL, 16); - - rt->rt_flags = (short) strtoul(cols[route_flags_col], NULL, 16); - rt->rt_dev = cols[route_dev_col]; - - return 1; -} - -/******************************************************************** - * - * defaultroute_exists - determine if there is a default route - */ - -static int defaultroute_exists (struct rtentry *rt) -{ - int result = 0; - - if (!open_route_table()) - return 0; - - while (read_route_table(rt) != 0) { - if ((rt->rt_flags & RTF_UP) == 0) - continue; - - if (kernel_version > KVERSION(2,1,0) && SIN_ADDR(rt->rt_genmask) != 0) - continue; - if (SIN_ADDR(rt->rt_dst) == 0L) { - result = 1; - break; - } - } - - close_route_table(); - return result; -} - -/* - * have_route_to - determine if the system has any route to - * a given IP address. `addr' is in network byte order. - * Return value is 1 if yes, 0 if no, -1 if don't know. - * For demand mode to work properly, we have to ignore routes - * through our own interface. - */ -int have_route_to(u_int32_t addr) -{ - struct rtentry rt; - int result = 0; - - if (!open_route_table()) - return -1; /* don't know */ - - while (read_route_table(&rt)) { - if ((rt.rt_flags & RTF_UP) == 0 || strcmp(rt.rt_dev, ifname) == 0) - continue; - if ((addr & SIN_ADDR(rt.rt_genmask)) == SIN_ADDR(rt.rt_dst)) { - result = 1; - break; - } - } - - close_route_table(); - return result; -} - -/******************************************************************** - * - * sifdefaultroute - assign a default route through the address given. - */ - -int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway) -{ - struct rtentry rt; - - if (defaultroute_exists(&rt) && strcmp(rt.rt_dev, ifname) != 0) { - u_int32_t old_gateway = SIN_ADDR(rt.rt_gateway); - - if (old_gateway != gateway) - error("not replacing existing default route to %s [%I]", - rt.rt_dev, old_gateway); - return 0; - } - - memset (&rt, '\0', sizeof (rt)); - SET_SA_FAMILY (rt.rt_dst, AF_INET); - SET_SA_FAMILY (rt.rt_gateway, AF_INET); - - if (kernel_version > KVERSION(2,1,0)) { - SET_SA_FAMILY (rt.rt_genmask, AF_INET); - SIN_ADDR(rt.rt_genmask) = 0L; - } - - SIN_ADDR(rt.rt_gateway) = gateway; - - rt.rt_flags = RTF_UP | RTF_GATEWAY; - if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) { - if ( ! ok_error ( errno )) - error("default route ioctl(SIOCADDRT): %m(%d)", errno); - return 0; - } - - default_route_gateway = gateway; - return 1; -} - -/******************************************************************** - * - * cifdefaultroute - delete a default route through the address given. - */ - -int cifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway) -{ - struct rtentry rt; - - default_route_gateway = 0; - - memset (&rt, '\0', sizeof (rt)); - SET_SA_FAMILY (rt.rt_dst, AF_INET); - SET_SA_FAMILY (rt.rt_gateway, AF_INET); - - if (kernel_version > KVERSION(2,1,0)) { - SET_SA_FAMILY (rt.rt_genmask, AF_INET); - SIN_ADDR(rt.rt_genmask) = 0L; - } - - SIN_ADDR(rt.rt_gateway) = gateway; - - rt.rt_flags = RTF_UP | RTF_GATEWAY; - if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) { - if (still_ppp()) { - if ( ! ok_error ( errno )) - error("default route ioctl(SIOCDELRT): %m (%d)", errno); - return 0; - } - } - - return 1; -} - -/******************************************************************** - * - * sifproxyarp - Make a proxy ARP entry for the peer. - */ - -int sifproxyarp (int unit, u_int32_t his_adr) -{ - struct arpreq arpreq; - char *forw_path; - - if (has_proxy_arp == 0) { - memset (&arpreq, '\0', sizeof(arpreq)); - - SET_SA_FAMILY(arpreq.arp_pa, AF_INET); - SIN_ADDR(arpreq.arp_pa) = his_adr; - arpreq.arp_flags = ATF_PERM | ATF_PUBL; -/* - * Get the hardware address of an interface on the same subnet - * as our local address. - */ - if (!get_ether_addr(his_adr, &arpreq.arp_ha, proxy_arp_dev, - sizeof(proxy_arp_dev))) { - error("Cannot determine ethernet address for proxy ARP"); - return 0; - } - strlcpy(arpreq.arp_dev, proxy_arp_dev, sizeof(arpreq.arp_dev)); - - if (ioctl(sock_fd, SIOCSARP, (caddr_t)&arpreq) < 0) { - if ( ! ok_error ( errno )) - error("ioctl(SIOCSARP): %m(%d)", errno); - return 0; - } - proxy_arp_addr = his_adr; - has_proxy_arp = 1; - - if (tune_kernel) { - forw_path = path_to_procfs("/sys/net/ipv4/ip_forward"); - if (forw_path != 0) { - int fd = open(forw_path, O_WRONLY); - if (fd >= 0) { - if (write(fd, "1", 1) != 1) - error("Couldn't enable IP forwarding: %m"); - close(fd); - } - } - } - } - - return 1; -} - -/******************************************************************** - * - * cifproxyarp - Delete the proxy ARP entry for the peer. - */ - -int cifproxyarp (int unit, u_int32_t his_adr) -{ - struct arpreq arpreq; - - if (has_proxy_arp) { - has_proxy_arp = 0; - memset (&arpreq, '\0', sizeof(arpreq)); - SET_SA_FAMILY(arpreq.arp_pa, AF_INET); - SIN_ADDR(arpreq.arp_pa) = his_adr; - arpreq.arp_flags = ATF_PERM | ATF_PUBL; - strlcpy(arpreq.arp_dev, proxy_arp_dev, sizeof(arpreq.arp_dev)); - - if (ioctl(sock_fd, SIOCDARP, (caddr_t)&arpreq) < 0) { - if ( ! ok_error ( errno )) - warn("ioctl(SIOCDARP): %m(%d)", errno); - return 0; - } - } - return 1; -} - -/******************************************************************** - * - * get_ether_addr - get the hardware address of an interface on the - * the same subnet as ipaddr. - */ - -static int get_ether_addr (u_int32_t ipaddr, - struct sockaddr *hwaddr, - char *name, int namelen) -{ - struct ifreq *ifr, *ifend; - u_int32_t ina, mask; - char *aliasp; - struct ifreq ifreq; - struct ifconf ifc; - struct ifreq ifs[MAX_IFS]; - - ifc.ifc_len = sizeof(ifs); - ifc.ifc_req = ifs; - if (ioctl(sock_fd, SIOCGIFCONF, &ifc) < 0) { - if ( ! ok_error ( errno )) - error("ioctl(SIOCGIFCONF): %m(%d)", errno); - return 0; - } - - SYSDEBUG ((LOG_DEBUG, "proxy arp: scanning %d interfaces for IP %s", - ifc.ifc_len / sizeof(struct ifreq), ip_ntoa(ipaddr))); -/* - * Scan through looking for an interface with an Internet - * address on the same subnet as `ipaddr'. - */ - ifend = ifs + (ifc.ifc_len / sizeof(struct ifreq)); - for (ifr = ifc.ifc_req; ifr < ifend; ifr++) { - if (ifr->ifr_addr.sa_family == AF_INET) { - ina = SIN_ADDR(ifr->ifr_addr); - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - SYSDEBUG ((LOG_DEBUG, "proxy arp: examining interface %s", - ifreq.ifr_name)); -/* - * Check that the interface is up, and not point-to-point - * nor loopback. - */ - if (ioctl(sock_fd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - - if (((ifreq.ifr_flags ^ FLAGS_GOOD) & FLAGS_MASK) != 0) - continue; -/* - * Get its netmask and check that it's on the right subnet. - */ - if (ioctl(sock_fd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - - mask = SIN_ADDR(ifreq.ifr_addr); - SYSDEBUG ((LOG_DEBUG, "proxy arp: interface addr %s mask %lx", - ip_ntoa(ina), ntohl(mask))); - - if (((ipaddr ^ ina) & mask) != 0) - continue; - break; - } - } - - if (ifr >= ifend) - return 0; - - strlcpy(name, ifreq.ifr_name, namelen); - - /* trim off the :1 in eth0:1 */ - aliasp = strchr(name, ':'); - if (aliasp != 0) - *aliasp = 0; - - info("found interface %s for proxy arp", name); -/* - * Now get the hardware address. - */ - memset (&ifreq.ifr_hwaddr, 0, sizeof (struct sockaddr)); - if (ioctl (sock_fd, SIOCGIFHWADDR, &ifreq) < 0) { - error("SIOCGIFHWADDR(%s): %m(%d)", ifreq.ifr_name, errno); - return 0; - } - - memcpy (hwaddr, - &ifreq.ifr_hwaddr, - sizeof (struct sockaddr)); - - SYSDEBUG ((LOG_DEBUG, - "proxy arp: found hwaddr %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", - (int) ((unsigned char *) &hwaddr->sa_data)[0], - (int) ((unsigned char *) &hwaddr->sa_data)[1], - (int) ((unsigned char *) &hwaddr->sa_data)[2], - (int) ((unsigned char *) &hwaddr->sa_data)[3], - (int) ((unsigned char *) &hwaddr->sa_data)[4], - (int) ((unsigned char *) &hwaddr->sa_data)[5], - (int) ((unsigned char *) &hwaddr->sa_data)[6], - (int) ((unsigned char *) &hwaddr->sa_data)[7])); - return 1; -} - -/* - * get_if_hwaddr - get the hardware address for the specified - * network interface device. - */ -int -get_if_hwaddr(u_char *addr, char *name) -{ - struct ifreq ifreq; - int ret, sock_fd; - - sock_fd = socket(AF_INET, SOCK_DGRAM, 0); - if (sock_fd < 0) - return 0; - memset(&ifreq.ifr_hwaddr, 0, sizeof(struct sockaddr)); - strlcpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name)); - ret = ioctl(sock_fd, SIOCGIFHWADDR, &ifreq); - close(sock_fd); - if (ret >= 0) - memcpy(addr, ifreq.ifr_hwaddr.sa_data, 6); - return ret; -} - -/* - * get_first_ethernet - return the name of the first ethernet-style - * interface on this system. - */ -char * -get_first_ethernet() -{ - return "eth0"; -} - -/******************************************************************** - * - * Return user specified netmask, modified by any mask we might determine - * for address `addr' (in network byte order). - * Here we scan through the system's list of interfaces, looking for - * any non-point-to-point interfaces which might appear to be on the same - * network as `addr'. If we find any, we OR in their netmask to the - * user-specified netmask. - */ - -u_int32_t GetMask (u_int32_t addr) -{ - u_int32_t mask, nmask, ina; - struct ifreq *ifr, *ifend, ifreq; - struct ifconf ifc; - struct ifreq ifs[MAX_IFS]; - - addr = ntohl(addr); - - if (IN_CLASSA(addr)) /* determine network mask for address class */ - nmask = IN_CLASSA_NET; - else if (IN_CLASSB(addr)) - nmask = IN_CLASSB_NET; - else - nmask = IN_CLASSC_NET; - - /* class D nets are disallowed by bad_ip_adrs */ - mask = netmask | htonl(nmask); -/* - * Scan through the system's network interfaces. - */ - ifc.ifc_len = sizeof(ifs); - ifc.ifc_req = ifs; - if (ioctl(sock_fd, SIOCGIFCONF, &ifc) < 0) { - if ( ! ok_error ( errno )) - warn("ioctl(SIOCGIFCONF): %m(%d)", errno); - return mask; - } - - ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); - for (ifr = ifc.ifc_req; ifr < ifend; ifr++) { -/* - * Check the interface's internet address. - */ - if (ifr->ifr_addr.sa_family != AF_INET) - continue; - ina = SIN_ADDR(ifr->ifr_addr); - if (((ntohl(ina) ^ addr) & nmask) != 0) - continue; -/* - * Check that the interface is up, and not point-to-point nor loopback. - */ - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - if (ioctl(sock_fd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - - if (((ifreq.ifr_flags ^ FLAGS_GOOD) & FLAGS_MASK) != 0) - continue; -/* - * Get its netmask and OR it into our mask. - */ - if (ioctl(sock_fd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - mask |= SIN_ADDR(ifreq.ifr_addr); - break; - } - return mask; -} - -/******************************************************************** - * - * Internal routine to decode the version.modification.patch level - */ - -static void decode_version (char *buf, int *version, - int *modification, int *patch) -{ - char *endp; - - *version = (int) strtoul (buf, &endp, 10); - *modification = 0; - *patch = 0; - - if (endp != buf && *endp == '.') { - buf = endp + 1; - *modification = (int) strtoul (buf, &endp, 10); - if (endp != buf && *endp == '.') { - buf = endp + 1; - *patch = (int) strtoul (buf, &buf, 10); - } - } -} - -/******************************************************************** - * - * Procedure to determine if the PPP line discipline is registered. - */ - -static int -ppp_registered(void) -{ - int local_fd; - int mfd = -1; - int ret = 0; - char slave[16]; - - /* - * We used to open the serial device and set it to the ppp line - * discipline here, in order to create a ppp unit. But that is - * not a good idea - the user might have specified a device that - * they can't open (permission, or maybe it doesn't really exist). - * So we grab a pty master/slave pair and use that. - */ - if (!get_pty(&mfd, &local_fd, slave, 0)) { - no_ppp_msg = "Couldn't determine if PPP is supported (no free ptys)"; - return 0; - } - - /* - * Try to put the device into the PPP discipline. - */ - if (ioctl(local_fd, TIOCSETD, &ppp_disc) < 0) { - error("ioctl(TIOCSETD(PPP)): %m(%d)", errno); - } else - ret = 1; - - close(local_fd); - close(mfd); - return ret; -} - -/******************************************************************** - * - * ppp_available - check whether the system has any ppp interfaces - * (in fact we check whether we can do an ioctl on ppp0). - */ - -int ppp_available(void) -{ - int s, ok, fd; - struct ifreq ifr; - int size; - int my_version, my_modification, my_patch; - int osmaj, osmin, ospatch; - - no_ppp_msg = - "This system lacks kernel support for PPP. This could be because\n" - "the PPP kernel module could not be loaded, or because PPP was not\n" - "included in the kernel configuration. If PPP was included as a\n" - "module, try `/sbin/modprobe -v ppp'. If that fails, check that\n" - "ppp.o exists in /lib/modules/`uname -r`/net.\n" - "See README.linux file in the ppp distribution for more details.\n"; - - /* get the kernel version now, since we are called before sys_init */ - uname(&utsname); - osmaj = osmin = ospatch = 0; - sscanf(utsname.release, "%d.%d.%d", &osmaj, &osmin, &ospatch); - kernel_version = KVERSION(osmaj, osmin, ospatch); - - fd = open("/dev/ppp", O_RDWR); -#if 0 - if (fd < 0 && errno == ENOENT) { - /* try making it and see if that helps. */ - if (mknod("/dev/ppp", S_IFCHR | S_IRUSR | S_IWUSR, - makedev(108, 0)) >= 0) { - fd = open("/dev/ppp", O_RDWR); - if (fd >= 0) - info("Created /dev/ppp device node"); - else - unlink("/dev/ppp"); /* didn't work, undo the mknod */ - } else if (errno == EEXIST) { - fd = open("/dev/ppp", O_RDWR); - } - } -#endif /* 0 */ - if (fd >= 0) { - new_style_driver = 1; - - /* XXX should get from driver */ - driver_version = 2; - driver_modification = 4; - driver_patch = 0; - close(fd); - return 1; - } - if (kernel_version >= KVERSION(2,3,13)) { - if (errno == ENOENT) - no_ppp_msg = - "pppd is unable to open the /dev/ppp device.\n" - "You need to create the /dev/ppp device node by\n" - "executing the following command as root:\n" - " mknod /dev/ppp c 108 0\n"; - return 0; - } - -/* - * Open a socket for doing the ioctl operations. - */ - s = socket(AF_INET, SOCK_DGRAM, 0); - if (s < 0) - return 0; - - strlcpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name)); - ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0; -/* - * If the device did not exist then attempt to create one by putting the - * current tty into the PPP discipline. If this works then obtain the - * flags for the device again. - */ - if (!ok) { - if (ppp_registered()) { - strlcpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name)); - ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0; - } - } -/* - * Ensure that the hardware address is for PPP and not something else - */ - if (ok) - ok = ioctl (s, SIOCGIFHWADDR, (caddr_t) &ifr) >= 0; - - if (ok && ((ifr.ifr_hwaddr.sa_family & ~0xFF) != ARPHRD_PPP)) - ok = 0; - -/* - * This is the PPP device. Validate the version of the driver at this - * point to ensure that this program will work with the driver. - */ - if (ok) { - char abBuffer [1024]; - - ifr.ifr_data = abBuffer; - size = ioctl (s, SIOCGPPPVER, (caddr_t) &ifr); - if (size < 0) { - error("Couldn't read driver version: %m"); - ok = 0; - no_ppp_msg = "Sorry, couldn't verify kernel driver version\n"; - - } else { - decode_version(abBuffer, - &driver_version, - &driver_modification, - &driver_patch); -/* - * Validate the version of the driver against the version that we used. - */ - decode_version(VERSION, - &my_version, - &my_modification, - &my_patch); - - /* The version numbers must match */ - if (driver_version != my_version) - ok = 0; - - /* The modification levels must be legal */ - if (driver_modification < 3) { - if (driver_modification >= 2) { - /* we can cope with 2.2.0 and above */ - driver_is_old = 1; - } else { - ok = 0; - } - } - - close (s); - if (!ok) { - slprintf(route_buffer, sizeof(route_buffer), - "Sorry - PPP driver version %d.%d.%d is out of date\n", - driver_version, driver_modification, driver_patch); - - no_ppp_msg = route_buffer; - } - } - } - return ok; -} - -/******************************************************************** - * - * sifvjcomp - config tcp header compression - */ - -int sifvjcomp (int u, int vjcomp, int cidcomp, int maxcid) -{ - u_int x = get_flags(ppp_dev_fd); - - if (vjcomp) { - if (ioctl (ppp_dev_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) { - if (! ok_error (errno)) - error("ioctl(PPPIOCSMAXCID): %m(%d)", errno); - vjcomp = 0; - } - } - - x = vjcomp ? x | SC_COMP_TCP : x &~ SC_COMP_TCP; - x = cidcomp ? x & ~SC_NO_TCP_CCID : x | SC_NO_TCP_CCID; - set_flags (ppp_dev_fd, x); - - return 1; -} - -/******************************************************************** - * - * sifup - Config the interface up and enable IP packets to pass. - */ - -int sifup(int u) -{ - struct ifreq ifr; - - memset (&ifr, '\0', sizeof (ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - if (ioctl(sock_fd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl (SIOCGIFFLAGS): %m(%d)", errno); - return 0; - } - - ifr.ifr_flags |= (IFF_UP | IFF_POINTOPOINT); - if (ioctl(sock_fd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFFLAGS): %m(%d)", errno); - return 0; - } - if_is_up++; - - return 1; -} - -/******************************************************************** - * - * sifdown - Disable the indicated protocol and config the interface - * down if there are no remaining protocols. - */ - -int sifdown (int u) -{ - struct ifreq ifr; - - if (if_is_up && --if_is_up > 0) - return 1; - - memset (&ifr, '\0', sizeof (ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - if (ioctl(sock_fd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl (SIOCGIFFLAGS): %m(%d)", errno); - return 0; - } - - ifr.ifr_flags &= ~IFF_UP; - ifr.ifr_flags |= IFF_POINTOPOINT; - if (ioctl(sock_fd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFFLAGS): %m(%d)", errno); - return 0; - } - return 1; -} - -/******************************************************************** - * - * sifaddr - Config the interface IP addresses and netmask. - */ - -int sifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr, - u_int32_t net_mask) -{ - struct ifreq ifr; - struct rtentry rt; - - memset (&ifr, '\0', sizeof (ifr)); - memset (&rt, '\0', sizeof (rt)); - - SET_SA_FAMILY (ifr.ifr_addr, AF_INET); - SET_SA_FAMILY (ifr.ifr_dstaddr, AF_INET); - SET_SA_FAMILY (ifr.ifr_netmask, AF_INET); - - strlcpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); -/* - * Set our IP address - */ - SIN_ADDR(ifr.ifr_addr) = our_adr; - if (ioctl(sock_fd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { - if (errno != EEXIST) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFADDR): %m(%d)", errno); - } - else { - warn("ioctl(SIOCSIFADDR): Address already exists"); - } - return (0); - } -/* - * Set the gateway address - */ - SIN_ADDR(ifr.ifr_dstaddr) = his_adr; - if (ioctl(sock_fd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFDSTADDR): %m(%d)", errno); - return (0); - } -/* - * Set the netmask. - * For recent kernels, force the netmask to 255.255.255.255. - */ - if (kernel_version >= KVERSION(2,1,16)) - net_mask = ~0L; - if (net_mask != 0) { - SIN_ADDR(ifr.ifr_netmask) = net_mask; - if (ioctl(sock_fd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFNETMASK): %m(%d)", errno); - return (0); - } - } -/* - * Add the device route - */ - if (kernel_version < KVERSION(2,1,16)) { - SET_SA_FAMILY (rt.rt_dst, AF_INET); - SET_SA_FAMILY (rt.rt_gateway, AF_INET); - rt.rt_dev = ifname; - - SIN_ADDR(rt.rt_gateway) = 0L; - SIN_ADDR(rt.rt_dst) = his_adr; - rt.rt_flags = RTF_UP | RTF_HOST; - - if (kernel_version > KVERSION(2,1,0)) { - SET_SA_FAMILY (rt.rt_genmask, AF_INET); - SIN_ADDR(rt.rt_genmask) = -1L; - } - - if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCADDRT) device route: %m(%d)", errno); - return (0); - } - } - - /* set ip_dynaddr in demand mode if address changes */ - if (demand && tune_kernel && !dynaddr_set - && our_old_addr && our_old_addr != our_adr) { - /* set ip_dynaddr if possible */ - char *path; - int fd; - - path = path_to_procfs("/sys/net/ipv4/ip_dynaddr"); - if (path != 0 && (fd = open(path, O_WRONLY)) >= 0) { - if (write(fd, "1", 1) != 1) - error("Couldn't enable dynamic IP addressing: %m"); - close(fd); - } - dynaddr_set = 1; /* only 1 attempt */ - } - our_old_addr = 0; - - return 1; -} - -/******************************************************************** - * - * cifaddr - Clear the interface IP addresses, and delete routes - * through the interface if possible. - */ - -int cifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr) -{ - struct ifreq ifr; - - if (kernel_version < KVERSION(2,1,16)) { -/* - * Delete the route through the device - */ - struct rtentry rt; - memset (&rt, '\0', sizeof (rt)); - - SET_SA_FAMILY (rt.rt_dst, AF_INET); - SET_SA_FAMILY (rt.rt_gateway, AF_INET); - rt.rt_dev = ifname; - - SIN_ADDR(rt.rt_gateway) = 0; - SIN_ADDR(rt.rt_dst) = his_adr; - rt.rt_flags = RTF_UP | RTF_HOST; - - if (kernel_version > KVERSION(2,1,0)) { - SET_SA_FAMILY (rt.rt_genmask, AF_INET); - SIN_ADDR(rt.rt_genmask) = -1L; - } - - if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) { - if (still_ppp() && ! ok_error (errno)) - error("ioctl(SIOCDELRT) device route: %m(%d)", errno); - return (0); - } - } - - /* This way it is possible to have an IPX-only or IPv6-only interface */ - memset(&ifr, 0, sizeof(ifr)); - SET_SA_FAMILY(ifr.ifr_addr, AF_INET); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - - if (ioctl(sock_fd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) { - error("ioctl(SIOCSIFADDR): %m(%d)", errno); - return 0; - } - } - - our_old_addr = our_adr; - - return 1; -} - -#ifdef INET6 -/******************************************************************** - * - * sif6addr - Config the interface with an IPv6 link-local address - */ -int sif6addr (int unit, eui64_t our_eui64, eui64_t his_eui64) -{ - struct in6_ifreq ifr6; - struct ifreq ifr; - struct in6_rtmsg rt6; - - if (sock6_fd < 0) { - errno = -sock6_fd; - error("IPv6 socket creation failed: %m"); - return 0; - } - memset(&ifr, 0, sizeof (ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) { - error("sif6addr: ioctl(SIOCGIFINDEX): %m (%d)", errno); - return 0; - } - - /* Local interface */ - memset(&ifr6, 0, sizeof(ifr6)); - IN6_LLADDR_FROM_EUI64(ifr6.ifr6_addr, our_eui64); - ifr6.ifr6_ifindex = ifr.ifr_ifindex; - ifr6.ifr6_prefixlen = 10; - - if (ioctl(sock6_fd, SIOCSIFADDR, &ifr6) < 0) { - error("sif6addr: ioctl(SIOCSIFADDR): %m (%d)", errno); - return 0; - } - - /* Route to remote host */ - memset(&rt6, 0, sizeof(rt6)); - IN6_LLADDR_FROM_EUI64(rt6.rtmsg_dst, his_eui64); - rt6.rtmsg_flags = RTF_UP; - rt6.rtmsg_dst_len = 10; - rt6.rtmsg_ifindex = ifr.ifr_ifindex; - rt6.rtmsg_metric = 1; - - if (ioctl(sock6_fd, SIOCADDRT, &rt6) < 0) { - error("sif6addr: ioctl(SIOCADDRT): %m (%d)", errno); - return 0; - } - - return 1; -} - - -/******************************************************************** - * - * cif6addr - Remove IPv6 address from interface - */ -int cif6addr (int unit, eui64_t our_eui64, eui64_t his_eui64) -{ - struct ifreq ifr; - struct in6_ifreq ifr6; - - if (sock6_fd < 0) { - errno = -sock6_fd; - error("IPv6 socket creation failed: %m"); - return 0; - } - memset(&ifr, 0, sizeof(ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) { - error("cif6addr: ioctl(SIOCGIFINDEX): %m (%d)", errno); - return 0; - } - - memset(&ifr6, 0, sizeof(ifr6)); - IN6_LLADDR_FROM_EUI64(ifr6.ifr6_addr, our_eui64); - ifr6.ifr6_ifindex = ifr.ifr_ifindex; - ifr6.ifr6_prefixlen = 10; - - if (ioctl(sock6_fd, SIOCDIFADDR, &ifr6) < 0) { - if (errno != EADDRNOTAVAIL) { - if (! ok_error (errno)) - error("cif6addr: ioctl(SIOCDIFADDR): %m (%d)", errno); - } - else { - warn("cif6addr: ioctl(SIOCDIFADDR): No such address"); - } - return (0); - } - return 1; -} -#endif /* INET6 */ - -/* - * get_pty - get a pty master/slave pair and chown the slave side - * to the uid given. Assumes slave_name points to >= 16 bytes of space. - */ -int -get_pty(master_fdp, slave_fdp, slave_name, uid) - int *master_fdp; - int *slave_fdp; - char *slave_name; - int uid; -{ - int i, mfd, sfd = -1; - char pty_name[16]; - struct termios tios; - -#ifdef TIOCGPTN - /* - * Try the unix98 way first. - */ - mfd = open("/dev/ptmx", O_RDWR); - if (mfd >= 0) { - int ptn; - if (ioctl(mfd, TIOCGPTN, &ptn) >= 0) { - slprintf(pty_name, sizeof(pty_name), "/dev/pts/%d", ptn); - chmod(pty_name, S_IRUSR | S_IWUSR); -#ifdef TIOCSPTLCK - ptn = 0; - if (ioctl(mfd, TIOCSPTLCK, &ptn) < 0) - warn("Couldn't unlock pty slave %s: %m", pty_name); -#endif - if ((sfd = open(pty_name, O_RDWR | O_NOCTTY)) < 0) - warn("Couldn't open pty slave %s: %m", pty_name); - } - } -#endif /* TIOCGPTN */ - - if (sfd < 0) { - /* the old way - scan through the pty name space */ - for (i = 0; i < 64; ++i) { - slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x", - 'p' + i / 16, i % 16); - mfd = open(pty_name, O_RDWR, 0); - if (mfd >= 0) { - pty_name[5] = 't'; - sfd = open(pty_name, O_RDWR | O_NOCTTY, 0); - if (sfd >= 0) { - fchown(sfd, uid, -1); - fchmod(sfd, S_IRUSR | S_IWUSR); - break; - } - close(mfd); - } - } - } - - if (sfd < 0) - return 0; - - strlcpy(slave_name, pty_name, 16); - *master_fdp = mfd; - *slave_fdp = sfd; - if (tcgetattr(sfd, &tios) == 0) { - tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB); - tios.c_cflag |= CS8 | CREAD | CLOCAL; - tios.c_iflag = IGNPAR; - tios.c_oflag = 0; - tios.c_lflag = 0; - if (tcsetattr(sfd, TCSAFLUSH, &tios) < 0) - warn("couldn't set attributes on pty: %m"); - } else - warn("couldn't get attributes on pty: %m"); - - return 1; -} - -/******************************************************************** - * - * open_loopback - open the device we use for getting packets - * in demand mode. Under Linux, we use a pty master/slave pair. - */ -int -open_ppp_loopback(void) -{ - int flags; - - looped = 1; - if (new_style_driver) { - /* allocate ourselves a ppp unit */ - if (make_ppp_unit() < 0) - die(1); - set_flags(ppp_dev_fd, SC_LOOP_TRAFFIC); - set_kdebugflag(kdebugflag); - ppp_fd = -1; - return ppp_dev_fd; - } - - if (!get_pty(&master_fd, &slave_fd, loop_name, 0)) - fatal("No free pty for loopback"); - SYSDEBUG(("using %s for loopback", loop_name)); - - set_ppp_fd(slave_fd); - - flags = fcntl(master_fd, F_GETFL); - if (flags == -1 || - fcntl(master_fd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("couldn't set master loopback to nonblock: %m(%d)", errno); - - flags = fcntl(ppp_fd, F_GETFL); - if (flags == -1 || - fcntl(ppp_fd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("couldn't set slave loopback to nonblock: %m(%d)", errno); - - if (ioctl(ppp_fd, TIOCSETD, &ppp_disc) < 0) - fatal("ioctl(TIOCSETD): %m(%d)", errno); -/* - * Find out which interface we were given. - */ - if (ioctl(ppp_fd, PPPIOCGUNIT, &ifunit) < 0) - fatal("ioctl(PPPIOCGUNIT): %m(%d)", errno); -/* - * Enable debug in the driver if requested. - */ - set_kdebugflag (kdebugflag); - - return master_fd; -} - -/******************************************************************** - * - * restore_loop - reattach the ppp unit to the loopback. - * - * The kernel ppp driver automatically reattaches the ppp unit to - * the loopback if the serial port is set to a line discipline other - * than ppp, or if it detects a modem hangup. The former will happen - * in disestablish_ppp if the latter hasn't already happened, so we - * shouldn't need to do anything. - * - * Just to be sure, set the real serial port to the normal discipline. - */ - -static void -restore_loop(void) -{ - looped = 1; - if (new_style_driver) { - set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_LOOP_TRAFFIC); - return; - } - if (ppp_fd != slave_fd) { - (void) ioctl(ppp_fd, TIOCSETD, &tty_disc); - set_ppp_fd(slave_fd); - } -} - -/******************************************************************** - * - * sifnpmode - Set the mode for handling packets for a given NP. - */ - -int -sifnpmode(u, proto, mode) - int u; - int proto; - enum NPmode mode; -{ - struct npioctl npi; - - npi.protocol = proto; - npi.mode = mode; - if (ioctl(ppp_dev_fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) { - if (! ok_error (errno)) - error("ioctl(PPPIOCSNPMODE, %d, %d): %m (%d)", - proto, mode, errno); - return 0; - } - return 1; -} - - -/******************************************************************** - * - * sipxfaddr - Config the interface IPX networknumber - */ - -int sipxfaddr (int unit, unsigned long int network, unsigned char * node ) -{ - int result = 1; - -#ifdef IPX_CHANGE - int skfd; - struct ifreq ifr; - struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr; - - skfd = socket (AF_IPX, SOCK_DGRAM, 0); - if (skfd < 0) { - if (! ok_error (errno)) - dbglog("socket(AF_IPX): %m (%d)", errno); - result = 0; - } - else { - memset (&ifr, '\0', sizeof (ifr)); - strlcpy (ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - - memcpy (sipx->sipx_node, node, IPX_NODE_LEN); - sipx->sipx_family = AF_IPX; - sipx->sipx_port = 0; - sipx->sipx_network = htonl (network); - sipx->sipx_type = IPX_FRAME_ETHERII; - sipx->sipx_action = IPX_CRTITF; -/* - * Set the IPX device - */ - if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { - result = 0; - if (errno != EEXIST) { - if (! ok_error (errno)) - dbglog("ioctl(SIOCSIFADDR, CRTITF): %m (%d)", errno); - } - else { - warn("ioctl(SIOCSIFADDR, CRTITF): Address already exists"); - } - } - close (skfd); - } -#endif - return result; -} - -/******************************************************************** - * - * cipxfaddr - Clear the information for the IPX network. The IPX routes - * are removed and the device is no longer able to pass IPX - * frames. - */ - -int cipxfaddr (int unit) -{ - int result = 1; - -#ifdef IPX_CHANGE - int skfd; - struct ifreq ifr; - struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr; - - skfd = socket (AF_IPX, SOCK_DGRAM, 0); - if (skfd < 0) { - if (! ok_error (errno)) - dbglog("socket(AF_IPX): %m (%d)", errno); - result = 0; - } - else { - memset (&ifr, '\0', sizeof (ifr)); - strlcpy (ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - - sipx->sipx_type = IPX_FRAME_ETHERII; - sipx->sipx_action = IPX_DLTITF; - sipx->sipx_family = AF_IPX; -/* - * Set the IPX device - */ - if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - info("ioctl(SIOCSIFADDR, IPX_DLTITF): %m (%d)", errno); - result = 0; - } - close (skfd); - } -#endif - return result; -} - -/* - * Use the hostname as part of the random number seed. - */ -int -get_host_seed() -{ - int h; - char *p = hostname; - - h = 407; - for (p = hostname; *p != 0; ++p) - h = h * 37 + *p; - return h; -} - -/******************************************************************** - * - * sys_check_options - check the options that the user specified - */ - -int -sys_check_options(void) -{ -#ifdef IPX_CHANGE -/* - * Disable the IPX protocol if the support is not present in the kernel. - */ - char *path; - - if (ipxcp_protent.enabled_flag) { - struct stat stat_buf; - if ((path = path_to_procfs("/net/ipx_interface")) == 0 - || lstat(path, &stat_buf) < 0) { - error("IPX support is not present in the kernel\n"); - ipxcp_protent.enabled_flag = 0; - } - } -#endif - if (demand && driver_is_old) { - option_error("demand dialling is not supported by kernel driver " - "version %d.%d.%d", driver_version, driver_modification, - driver_patch); - return 0; - } - if (multilink && !new_style_driver) { - warn("Warning: multilink is not supported by the kernel driver"); - multilink = 0; - } - return 1; -} diff --git a/mdk-stage1/ppp/pppd/sys-linux.c.wtmp b/mdk-stage1/ppp/pppd/sys-linux.c.wtmp deleted file mode 100644 index f1b48423e..000000000 --- a/mdk-stage1/ppp/pppd/sys-linux.c.wtmp +++ /dev/null @@ -1,2750 +0,0 @@ -/* - * sys-linux.c - System-dependent procedures for setting up - * PPP interfaces on Linux systems - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#include <sys/ioctl.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/time.h> -#include <sys/errno.h> -#include <sys/file.h> -#include <sys/stat.h> -#include <sys/utsname.h> -#include <sys/sysmacros.h> - -#include <stdio.h> -#include <stdlib.h> -#include <syslog.h> -#include <string.h> -#include <time.h> -#include <memory.h> -#include <utmp.h> -#include <mntent.h> -#include <signal.h> -#include <fcntl.h> -#include <ctype.h> -#include <termios.h> -#include <unistd.h> - -/* This is in netdevice.h. However, this compile will fail miserably if - you attempt to include netdevice.h because it has so many references - to __memcpy functions which it should not attempt to do. So, since I - really don't use it, but it must be defined, define it now. */ - -#ifndef MAX_ADDR_LEN -#define MAX_ADDR_LEN 7 -#endif - -#if __GLIBC__ >= 2 -#include <asm/types.h> /* glibc 2 conflicts with linux/types.h */ -#include <net/if.h> -#include <net/if_arp.h> -#include <net/route.h> -#include <netinet/if_ether.h> -#else -#include <linux/types.h> -#include <linux/if.h> -#include <linux/if_arp.h> -#include <linux/route.h> -#include <linux/if_ether.h> -#endif -#include <netinet/in.h> -#include <arpa/inet.h> - -#include <linux/ppp_defs.h> -#include <linux/if_ppp.h> - -#include "pppd.h" -#include "fsm.h" -#include "ipcp.h" - -#ifdef IPX_CHANGE -#include "ipxcp.h" -#if __GLIBC__ >= 2 && \ - !(defined(__powerpc__) && __GLIBC__ == 2 && __GLIBC_MINOR__ == 0) -#include <netipx/ipx.h> -#else -#include <linux/ipx.h> -#endif -#endif /* IPX_CHANGE */ - -#ifdef PPP_FILTER -#include <net/bpf.h> -#include <linux/filter.h> -#endif /* PPP_FILTER */ - -#ifdef LOCKLIB -#include <sys/locks.h> -#endif - -#ifdef INET6 -#ifndef _LINUX_IN6_H -/* - * This is in linux/include/net/ipv6.h. - */ - -struct in6_ifreq { - struct in6_addr ifr6_addr; - __u32 ifr6_prefixlen; - unsigned int ifr6_ifindex; -}; -#endif - -#define IN6_LLADDR_FROM_EUI64(sin6, eui64) do { \ - memset(&sin6.s6_addr, 0, sizeof(struct in6_addr)); \ - sin6.s6_addr16[0] = htons(0xfe80); \ - eui64_copy(eui64, sin6.s6_addr32[2]); \ - } while (0) - -#endif /* INET6 */ - -/* We can get an EIO error on an ioctl if the modem has hung up */ -#define ok_error(num) ((num)==EIO) - -static int tty_disc = N_TTY; /* The TTY discipline */ -static int ppp_disc = N_PPP; /* The PPP discpline */ -static int initfdflags = -1; /* Initial file descriptor flags for fd */ -static int ppp_fd = -1; /* fd which is set to PPP discipline */ -static int sock_fd = -1; /* socket for doing interface ioctls */ -static int slave_fd = -1; -static int master_fd = -1; -#ifdef INET6 -static int sock6_fd = -1; -#endif /* INET6 */ -static int ppp_dev_fd = -1; /* fd for /dev/ppp (new style driver) */ -static int chindex; /* channel index (new style driver) */ - -static fd_set in_fds; /* set of fds that wait_input waits for */ -static int max_in_fd; /* highest fd set in in_fds */ - -static int has_proxy_arp = 0; -static int driver_version = 0; -static int driver_modification = 0; -static int driver_patch = 0; -static int driver_is_old = 0; -static int restore_term = 0; /* 1 => we've munged the terminal */ -static struct termios inittermios; /* Initial TTY termios */ - -static int new_style_driver = 0; - -static char loop_name[20]; -static unsigned char inbuf[512]; /* buffer for chars read from loopback */ - -static int if_is_up; /* Interface has been marked up */ -static u_int32_t default_route_gateway; /* Gateway for default route added */ -static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */ -static char proxy_arp_dev[16]; /* Device for proxy arp entry */ -static u_int32_t our_old_addr; /* for detecting address changes */ -static int dynaddr_set; /* 1 if ip_dynaddr set */ -static int looped; /* 1 if using loop */ -static int link_mtu; /* mtu for the link (not bundle) */ - -static struct utsname utsname; /* for the kernel version */ -static int kernel_version; -#define KVERSION(j,n,p) ((j)*1000000 + (n)*1000 + (p)) - -#define MAX_IFS 100 - -#define FLAGS_GOOD (IFF_UP | IFF_BROADCAST) -#define FLAGS_MASK (IFF_UP | IFF_BROADCAST | \ - IFF_POINTOPOINT | IFF_LOOPBACK | IFF_NOARP) - -#define SIN_ADDR(x) (((struct sockaddr_in *) (&(x)))->sin_addr.s_addr) - -/* Prototypes for procedures local to this file. */ -static int get_flags (int fd); -static void set_flags (int fd, int flags); -static int translate_speed (int bps); -static int baud_rate_of (int speed); -static void close_route_table (void); -static int open_route_table (void); -static int read_route_table (struct rtentry *rt); -static int defaultroute_exists (struct rtentry *rt); -static int get_ether_addr (u_int32_t ipaddr, struct sockaddr *hwaddr, - char *name, int namelen); -static void decode_version (char *buf, int *version, int *mod, int *patch); -static int set_kdebugflag(int level); -static int ppp_registered(void); -static int make_ppp_unit(void); -static void restore_loop(void); /* Transfer ppp unit back to loopback */ - -extern u_char inpacket_buf[]; /* borrowed from main.c */ - -/* - * SET_SA_FAMILY - set the sa_family field of a struct sockaddr, - * if it exists. - */ - -#define SET_SA_FAMILY(addr, family) \ - memset ((char *) &(addr), '\0', sizeof(addr)); \ - addr.sa_family = (family); - -/* - * Determine if the PPP connection should still be present. - */ - -extern int hungup; - -/* new_fd is the fd of a tty */ -static void set_ppp_fd (int new_fd) -{ - SYSDEBUG ((LOG_DEBUG, "setting ppp_fd to %d\n", new_fd)); - ppp_fd = new_fd; - if (!new_style_driver) - ppp_dev_fd = new_fd; -} - -static int still_ppp(void) -{ - if (new_style_driver) - return !hungup && ppp_fd >= 0; - if (!hungup || ppp_fd == slave_fd) - return 1; - if (slave_fd >= 0) { - set_ppp_fd(slave_fd); - return 1; - } - return 0; -} - -/******************************************************************** - * - * Functions to read and set the flags value in the device driver - */ - -static int get_flags (int fd) -{ - int flags; - - if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &flags) < 0) { - if ( ok_error (errno) ) - flags = 0; - else - fatal("ioctl(PPPIOCGFLAGS): %m"); - } - - SYSDEBUG ((LOG_DEBUG, "get flags = %x\n", flags)); - return flags; -} - -/********************************************************************/ - -static void set_flags (int fd, int flags) -{ - SYSDEBUG ((LOG_DEBUG, "set flags = %x\n", flags)); - - if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &flags) < 0) { - if (! ok_error (errno) ) - fatal("ioctl(PPPIOCSFLAGS, %x): %m", flags, errno); - } -} - -/******************************************************************** - * - * sys_init - System-dependent initialization. - */ - -void sys_init(void) -{ - int flags; - - if (new_style_driver) { - ppp_dev_fd = open("/dev/ppp", O_RDWR); - if (ppp_dev_fd < 0) - fatal("Couldn't open /dev/ppp: %m"); - flags = fcntl(ppp_dev_fd, F_GETFL); - if (flags == -1 - || fcntl(ppp_dev_fd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("Couldn't set /dev/ppp to nonblock: %m"); - } - - /* Get an internet socket for doing socket ioctls. */ - sock_fd = socket(AF_INET, SOCK_DGRAM, 0); - if (sock_fd < 0) - fatal("Couldn't create IP socket: %m(%d)", errno); - -#ifdef INET6 - sock6_fd = socket(AF_INET6, SOCK_DGRAM, 0); - if (sock6_fd < 0) - sock6_fd = -errno; /* save errno for later */ -#endif - - FD_ZERO(&in_fds); - max_in_fd = 0; -} - -/******************************************************************** - * - * sys_cleanup - restore any system state we modified before exiting: - * mark the interface down, delete default route and/or proxy arp entry. - * This shouldn't call die() because it's called from die(). - */ - -void sys_cleanup(void) -{ -/* - * Take down the device - */ - if (if_is_up) { - if_is_up = 0; - sifdown(0); - } -/* - * Delete any routes through the device. - */ - if (default_route_gateway != 0) - cifdefaultroute(0, 0, default_route_gateway); - - if (has_proxy_arp) - cifproxyarp(0, proxy_arp_addr); -} - -/******************************************************************** - * - * sys_close - Clean up in a child process before execing. - */ -void -sys_close(void) -{ - if (new_style_driver) - close(ppp_dev_fd); - if (sock_fd >= 0) - close(sock_fd); - if (slave_fd >= 0) - close(slave_fd); - if (master_fd >= 0) - close(master_fd); - closelog(); -} - -/******************************************************************** - * - * set_kdebugflag - Define the debugging level for the kernel - */ - -static int set_kdebugflag (int requested_level) -{ - if (new_style_driver && ifunit < 0) - return 1; - if (ioctl(ppp_dev_fd, PPPIOCSDEBUG, &requested_level) < 0) { - if ( ! ok_error (errno) ) - error("ioctl(PPPIOCSDEBUG): %m"); - return (0); - } - SYSDEBUG ((LOG_INFO, "set kernel debugging level to %d", - requested_level)); - return (1); -} - -/******************************************************************** - * - * tty_establish_ppp - Turn the serial port into a ppp interface. - */ - -int tty_establish_ppp (int tty_fd) -{ - int x; - int fd = -1; - -/* - * Ensure that the tty device is in exclusive mode. - */ - if (ioctl(tty_fd, TIOCEXCL, 0) < 0) { - if ( ! ok_error ( errno )) - warn("Couldn't make tty exclusive: %m"); - } -/* - * Demand mode - prime the old ppp device to relinquish the unit. - */ - if (!new_style_driver && looped - && ioctl(slave_fd, PPPIOCXFERUNIT, 0) < 0) { - error("ioctl(transfer ppp unit): %m"); - return -1; - } -/* - * Set the current tty to the PPP discpline - */ - -#ifndef N_SYNC_PPP -#define N_SYNC_PPP 14 -#endif - ppp_disc = (new_style_driver && sync_serial)? N_SYNC_PPP: N_PPP; - if (ioctl(tty_fd, TIOCSETD, &ppp_disc) < 0) { - if ( ! ok_error (errno) ) { - error("Couldn't set tty to PPP discipline: %m"); - return -1; - } - } - - if (new_style_driver) { - /* Open another instance of /dev/ppp and connect the channel to it */ - int flags; - - if (ioctl(tty_fd, PPPIOCGCHAN, &chindex) == -1) { - error("Couldn't get channel number: %m"); - goto err; - } - dbglog("using channel %d", chindex); - fd = open("/dev/ppp", O_RDWR); - if (fd < 0) { - error("Couldn't reopen /dev/ppp: %m"); - goto err; - } - if (ioctl(fd, PPPIOCATTCHAN, &chindex) < 0) { - error("Couldn't attach to channel %d: %m", chindex); - goto err_close; - } - flags = fcntl(fd, F_GETFL); - if (flags == -1 || fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("Couldn't set /dev/ppp (channel) to nonblock: %m"); - set_ppp_fd(fd); - - if (!looped) - ifunit = -1; - if (!looped && !multilink) { - /* - * Create a new PPP unit. - */ - if (make_ppp_unit() < 0) - goto err_close; - } - - if (looped) - set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) & ~SC_LOOP_TRAFFIC); - - if (!multilink) { - add_fd(ppp_dev_fd); - if (ioctl(fd, PPPIOCCONNECT, &ifunit) < 0) { - error("Couldn't attach to PPP unit %d: %m", ifunit); - goto err_close; - } - } - - } else { - /* - * Old-style driver: find out which interface we were given. - */ - set_ppp_fd (tty_fd); - if (ioctl(tty_fd, PPPIOCGUNIT, &x) < 0) { - if (ok_error (errno)) - goto err; - fatal("ioctl(PPPIOCGUNIT): %m(%d)", errno); - } - /* Check that we got the same unit again. */ - if (looped && x != ifunit) - fatal("transfer_ppp failed: wanted unit %d, got %d", ifunit, x); - ifunit = x; - - /* - * Fetch the initial file flags and reset blocking mode on the file. - */ - initfdflags = fcntl(tty_fd, F_GETFL); - if (initfdflags == -1 || - fcntl(tty_fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) { - if ( ! ok_error (errno)) - warn("Couldn't set device to non-blocking mode: %m"); - } - } - - looped = 0; - - /* - * Enable debug in the driver if requested. - */ - if (!looped) - set_kdebugflag (kdebugflag); - -#define SC_RCVB (SC_RCV_B7_0 | SC_RCV_B7_1 | SC_RCV_EVNP | SC_RCV_ODDP) -#define SC_LOGB (SC_DEBUG | SC_LOG_INPKT | SC_LOG_OUTPKT | SC_LOG_RAWIN \ - | SC_LOG_FLUSH) - - set_flags(ppp_fd, ((get_flags(ppp_fd) & ~(SC_RCVB | SC_LOGB)) - | ((kdebugflag * SC_DEBUG) & SC_LOGB))); - - SYSDEBUG ((LOG_NOTICE, "Using version %d.%d.%d of PPP driver", - driver_version, driver_modification, driver_patch)); - - return ppp_fd; - - err_close: - close(fd); - err: - if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0 && !ok_error(errno)) - warn("Couldn't reset tty to normal line discipline: %m"); - return -1; -} - -/******************************************************************** - * - * tty_disestablish_ppp - Restore the serial port to normal operation, - * and reconnect the ppp unit to the loopback if in demand mode. - * This shouldn't call die() because it's called from die(). - */ - -void tty_disestablish_ppp(int tty_fd) -{ - if (demand) - restore_loop(); - if (!hungup) { -/* - * Flush the tty output buffer so that the TIOCSETD doesn't hang. - */ - if (tcflush(tty_fd, TCIOFLUSH) < 0) - warn("tcflush failed: %m"); -/* - * Restore the previous line discipline - */ - if (ioctl(tty_fd, TIOCSETD, &tty_disc) < 0) { - if ( ! ok_error (errno)) - error("ioctl(TIOCSETD, N_TTY): %m"); - } - - if (ioctl(tty_fd, TIOCNXCL, 0) < 0) { - if ( ! ok_error (errno)) - warn("ioctl(TIOCNXCL): %m(%d)", errno); - } - - /* Reset non-blocking mode on fd. */ - if (initfdflags != -1 && fcntl(tty_fd, F_SETFL, initfdflags) < 0) { - if ( ! ok_error (errno)) - warn("Couldn't restore device fd flags: %m"); - } - } - initfdflags = -1; - - if (new_style_driver) { - close(ppp_fd); - ppp_fd = -1; - if (!looped && ifunit >= 0 && ioctl(ppp_dev_fd, PPPIOCDETACH) < 0) - error("Couldn't release PPP unit: %m"); - if (!multilink) - remove_fd(ppp_dev_fd); - } -} - -/* - * make_ppp_unit - make a new ppp unit for ppp_dev_fd. - * Assumes new_style_driver. - */ -static int make_ppp_unit() -{ - int x; - - ifunit = req_unit; - x = ioctl(ppp_dev_fd, PPPIOCNEWUNIT, &ifunit); - if (x < 0 && req_unit >= 0 && errno == EEXIST) { - warn("Couldn't allocate PPP unit %d as it is already in use"); - ifunit = -1; - x = ioctl(ppp_dev_fd, PPPIOCNEWUNIT, &ifunit); - } - if (x < 0) - error("Couldn't create new ppp unit: %m"); - return x; -} - -/* - * cfg_bundle - configure the existing bundle. - * Used in demand mode. - */ -void cfg_bundle(int mrru, int mtru, int rssn, int tssn) -{ - int flags; - - if (!new_style_driver) - return; - - /* set the mrru, mtu and flags */ - if (ioctl(ppp_dev_fd, PPPIOCSMRRU, &mrru) < 0) - error("Couldn't set MRRU: %m"); - flags = get_flags(ppp_dev_fd); - flags &= ~(SC_MP_SHORTSEQ | SC_MP_XSHORTSEQ); - flags |= (rssn? SC_MP_SHORTSEQ: 0) | (tssn? SC_MP_XSHORTSEQ: 0) - | (mrru? SC_MULTILINK: 0); - - set_flags(ppp_dev_fd, flags); - - /* connect up the channel */ - if (ioctl(ppp_fd, PPPIOCCONNECT, &ifunit) < 0) - fatal("Couldn't attach to PPP unit %d: %m", ifunit); - add_fd(ppp_dev_fd); -} - -/* - * make_new_bundle - create a new PPP unit (i.e. a bundle) - * and connect our channel to it. This should only get called - * if `multilink' was set at the time establish_ppp was called. - * In demand mode this uses our existing bundle instead of making - * a new one. - */ -void make_new_bundle(int mrru, int mtru, int rssn, int tssn) -{ - if (!new_style_driver) - return; - - /* make us a ppp unit */ - if (make_ppp_unit() < 0) - die(1); - - /* set the mrru and flags */ - cfg_bundle(mrru, mtru, rssn, tssn); -} - -/* - * bundle_attach - attach our link to a given PPP unit. - * We assume the unit is controlled by another pppd. - */ -int bundle_attach(int ifnum) -{ - if (!new_style_driver) - return -1; - - if (ioctl(ppp_dev_fd, PPPIOCATTACH, &ifnum) < 0) { - if (errno == ENXIO) - return 0; /* doesn't still exist */ - fatal("Couldn't attach to interface unit %d: %m\n", ifnum); - } - if (ioctl(ppp_fd, PPPIOCCONNECT, &ifnum) < 0) - fatal("Couldn't connect to interface unit %d: %m", ifnum); - set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_MULTILINK); - - ifunit = ifnum; - return 1; -} - -/******************************************************************** - * - * clean_check - Fetch the flags for the device and generate - * appropriate error messages. - */ -void clean_check(void) -{ - int x; - char *s; - - if (still_ppp()) { - if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) { - s = NULL; - switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) { - case SC_RCV_B7_0: - s = "all had bit 7 set to 1"; - break; - - case SC_RCV_B7_1: - s = "all had bit 7 set to 0"; - break; - - case SC_RCV_EVNP: - s = "all had odd parity"; - break; - - case SC_RCV_ODDP: - s = "all had even parity"; - break; - } - - if (s != NULL) { - warn("Receive serial link is not 8-bit clean:"); - warn("Problem: %s", s); - } - } - } -} - - -/* - * List of valid speeds. - */ - -struct speed { - int speed_int, speed_val; -} speeds[] = { -#ifdef B50 - { 50, B50 }, -#endif -#ifdef B75 - { 75, B75 }, -#endif -#ifdef B110 - { 110, B110 }, -#endif -#ifdef B134 - { 134, B134 }, -#endif -#ifdef B150 - { 150, B150 }, -#endif -#ifdef B200 - { 200, B200 }, -#endif -#ifdef B300 - { 300, B300 }, -#endif -#ifdef B600 - { 600, B600 }, -#endif -#ifdef B1200 - { 1200, B1200 }, -#endif -#ifdef B1800 - { 1800, B1800 }, -#endif -#ifdef B2000 - { 2000, B2000 }, -#endif -#ifdef B2400 - { 2400, B2400 }, -#endif -#ifdef B3600 - { 3600, B3600 }, -#endif -#ifdef B4800 - { 4800, B4800 }, -#endif -#ifdef B7200 - { 7200, B7200 }, -#endif -#ifdef B9600 - { 9600, B9600 }, -#endif -#ifdef B19200 - { 19200, B19200 }, -#endif -#ifdef B38400 - { 38400, B38400 }, -#endif -#ifdef B57600 - { 57600, B57600 }, -#endif -#ifdef B76800 - { 76800, B76800 }, -#endif -#ifdef B115200 - { 115200, B115200 }, -#endif -#ifdef EXTA - { 19200, EXTA }, -#endif -#ifdef EXTB - { 38400, EXTB }, -#endif -#ifdef B230400 - { 230400, B230400 }, -#endif -#ifdef B460800 - { 460800, B460800 }, -#endif -#ifdef B921600 - { 921600, B921600 }, -#endif - { 0, 0 } -}; - -/******************************************************************** - * - * Translate from bits/second to a speed_t. - */ - -static int translate_speed (int bps) -{ - struct speed *speedp; - - if (bps != 0) { - for (speedp = speeds; speedp->speed_int; speedp++) { - if (bps == speedp->speed_int) - return speedp->speed_val; - } - warn("speed %d not supported", bps); - } - return 0; -} - -/******************************************************************** - * - * Translate from a speed_t to bits/second. - */ - -static int baud_rate_of (int speed) -{ - struct speed *speedp; - - if (speed != 0) { - for (speedp = speeds; speedp->speed_int; speedp++) { - if (speed == speedp->speed_val) - return speedp->speed_int; - } - } - return 0; -} - -/******************************************************************** - * - * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity, - * at the requested speed, etc. If `local' is true, set CLOCAL - * regardless of whether the modem option was specified. - */ - -void set_up_tty(int tty_fd, int local) -{ - int speed; - struct termios tios; - - setdtr(tty_fd, 1); - if (tcgetattr(tty_fd, &tios) < 0) { - if (!ok_error(errno)) - fatal("tcgetattr: %m(%d)", errno); - return; - } - - if (!restore_term) - inittermios = tios; - - tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); - tios.c_cflag |= CS8 | CREAD | HUPCL; - - tios.c_iflag = IGNBRK | IGNPAR; - tios.c_oflag = 0; - tios.c_lflag = 0; - tios.c_cc[VMIN] = 1; - tios.c_cc[VTIME] = 0; - - if (local || !modem) - tios.c_cflag ^= (CLOCAL | HUPCL); - - switch (crtscts) { - case 1: - tios.c_cflag |= CRTSCTS; - break; - - case -2: - tios.c_iflag |= IXON | IXOFF; - tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */ - tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */ - break; - - case -1: - tios.c_cflag &= ~CRTSCTS; - break; - - default: - break; - } - - speed = translate_speed(inspeed); - if (speed) { - cfsetospeed (&tios, speed); - cfsetispeed (&tios, speed); - } -/* - * We can't proceed if the serial port speed is B0, - * since that implies that the serial port is disabled. - */ - else { - speed = cfgetospeed(&tios); - if (speed == B0) - fatal("Baud rate for %s is 0; need explicit baud rate", devnam); - } - - if (tcsetattr(tty_fd, TCSAFLUSH, &tios) < 0) - if (!ok_error(errno)) - fatal("tcsetattr: %m"); - - baud_rate = baud_rate_of(speed); - restore_term = 1; -} - -/******************************************************************** - * - * setdtr - control the DTR line on the serial port. - * This is called from die(), so it shouldn't call die(). - */ - -void setdtr (int tty_fd, int on) -{ - int modembits = TIOCM_DTR; - - ioctl(tty_fd, (on ? TIOCMBIS : TIOCMBIC), &modembits); -} - -/******************************************************************** - * - * restore_tty - restore the terminal to the saved settings. - */ - -void restore_tty (int tty_fd) -{ - if (restore_term) { - restore_term = 0; -/* - * Turn off echoing, because otherwise we can get into - * a loop with the tty and the modem echoing to each other. - * We presume we are the sole user of this tty device, so - * when we close it, it will revert to its defaults anyway. - */ - if (!default_device) - inittermios.c_lflag &= ~(ECHO | ECHONL); - - if (tcsetattr(tty_fd, TCSAFLUSH, &inittermios) < 0) { - if (! ok_error (errno)) - warn("tcsetattr: %m"); - } - } -} - -/******************************************************************** - * - * output - Output PPP packet. - */ - -void output (int unit, unsigned char *p, int len) -{ - int fd = ppp_fd; - int proto; - - if (debug) - dbglog("sent %P", p, len); - - if (len < PPP_HDRLEN) - return; - if (new_style_driver) { - p += 2; - len -= 2; - proto = (p[0] << 8) + p[1]; - if (ifunit >= 0 && !(proto >= 0xc000 || proto == PPP_CCPFRAG)) - fd = ppp_dev_fd; - } - if (write(fd, p, len) < 0) { - if (errno == EWOULDBLOCK || errno == ENOBUFS - || errno == ENXIO || errno == EIO || errno == EINTR) - warn("write: warning: %m (%d)", errno); - else - error("write: %m (%d)", errno); - } -} - -/******************************************************************** - * - * wait_input - wait until there is data available, - * for the length of time specified by *timo (indefinite - * if timo is NULL). - */ - -void wait_input(struct timeval *timo) -{ - fd_set ready, exc; - int n; - - ready = in_fds; - exc = in_fds; - n = select(max_in_fd + 1, &ready, NULL, &exc, timo); - if (n < 0 && errno != EINTR) - fatal("select: %m(%d)", errno); -} - -/* - * add_fd - add an fd to the set that wait_input waits for. - */ -void add_fd(int fd) -{ - FD_SET(fd, &in_fds); - if (fd > max_in_fd) - max_in_fd = fd; -} - -/* - * remove_fd - remove an fd from the set that wait_input waits for. - */ -void remove_fd(int fd) -{ - FD_CLR(fd, &in_fds); -} - - -/******************************************************************** - * - * read_packet - get a PPP packet from the serial device. - */ - -int read_packet (unsigned char *buf) -{ - int len, nr; - - len = PPP_MRU + PPP_HDRLEN; - if (new_style_driver) { - *buf++ = PPP_ALLSTATIONS; - *buf++ = PPP_UI; - len -= 2; - } - nr = -1; - if (ppp_fd >= 0) { - nr = read(ppp_fd, buf, len); - if (nr < 0 && errno != EWOULDBLOCK && errno != EIO && errno != EINTR) - error("read: %m"); - if (nr < 0 && errno == ENXIO) - return 0; - } - if (nr < 0 && new_style_driver && ifunit >= 0) { - /* N.B. we read ppp_fd first since LCP packets come in there. */ - nr = read(ppp_dev_fd, buf, len); - if (nr < 0 && errno != EWOULDBLOCK && errno != EIO && errno != EINTR) - error("read /dev/ppp: %m"); - if (nr < 0 && errno == ENXIO) - return 0; - } - return (new_style_driver && nr > 0)? nr+2: nr; -} - -/******************************************************************** - * - * get_loop_output - get outgoing packets from the ppp device, - * and detect when we want to bring the real link up. - * Return value is 1 if we need to bring up the link, 0 otherwise. - */ -int -get_loop_output(void) -{ - int rv = 0; - int n; - - if (new_style_driver) { - while ((n = read_packet(inpacket_buf)) > 0) - if (loop_frame(inpacket_buf, n)) - rv = 1; - return rv; - } - - while ((n = read(master_fd, inbuf, sizeof(inbuf))) > 0) - if (loop_chars(inbuf, n)) - rv = 1; - - if (n == 0) - fatal("eof on loopback"); - - if (errno != EWOULDBLOCK) - fatal("read from loopback: %m(%d)", errno); - - return rv; -} - -/* - * netif_set_mtu - set the MTU on the PPP network interface. - */ -void -netif_set_mtu(int unit, int mtu) -{ - struct ifreq ifr; - - SYSDEBUG ((LOG_DEBUG, "netif_set_mtu: mtu = %d\n", mtu)); - - memset (&ifr, '\0', sizeof (ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - ifr.ifr_mtu = mtu; - - if (ifunit >= 0 && ioctl(sock_fd, SIOCSIFMTU, (caddr_t) &ifr) < 0) - fatal("ioctl(SIOCSIFMTU): %m"); -} - -/******************************************************************** - * - * tty_send_config - configure the transmit characteristics of - * the ppp interface. - */ - -void tty_send_config (int mtu,u_int32_t asyncmap,int pcomp,int accomp) -{ - u_int x; - -/* - * Set the asyncmap and other parameters for the ppp device - */ - if (!still_ppp()) - return; - link_mtu = mtu; - SYSDEBUG ((LOG_DEBUG, "send_config: asyncmap = %lx\n", asyncmap)); - if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) { - if (!ok_error(errno)) - fatal("ioctl(PPPIOCSASYNCMAP): %m(%d)", errno); - return; - } - - x = get_flags(ppp_fd); - x = pcomp ? x | SC_COMP_PROT : x & ~SC_COMP_PROT; - x = accomp ? x | SC_COMP_AC : x & ~SC_COMP_AC; - x = sync_serial ? x | SC_SYNC : x & ~SC_SYNC; - set_flags(ppp_fd, x); -} - -/******************************************************************** - * - * tty_set_xaccm - set the extended transmit ACCM for the interface. - */ - -void tty_set_xaccm (ext_accm accm) -{ - SYSDEBUG ((LOG_DEBUG, "set_xaccm: %08lx %08lx %08lx %08lx\n", - accm[0], accm[1], accm[2], accm[3])); - - if (!still_ppp()) - return; - if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY) { - if ( ! ok_error (errno)) - warn("ioctl(set extended ACCM): %m(%d)", errno); - } -} - -/******************************************************************** - * - * tty_recv_config - configure the receive-side characteristics of - * the ppp interface. - */ - -void tty_recv_config (int mru,u_int32_t asyncmap,int pcomp,int accomp) -{ - SYSDEBUG ((LOG_DEBUG, "recv_config: mru = %d\n", mru)); -/* - * If we were called because the link has gone down then there is nothing - * which may be done. Just return without incident. - */ - if (!still_ppp()) - return; -/* - * Set the receiver parameters - */ - if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) { - if ( ! ok_error (errno)) - error("ioctl(PPPIOCSMRU): %m(%d)", errno); - } - if (new_style_driver && ifunit >= 0 - && ioctl(ppp_dev_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) - error("Couldn't set MRU in generic PPP layer: %m"); - - SYSDEBUG ((LOG_DEBUG, "recv_config: asyncmap = %lx\n", asyncmap)); - if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) { - if (!ok_error(errno)) - error("ioctl(PPPIOCSRASYNCMAP): %m(%d)", errno); - } -} - -/******************************************************************** - * - * ccp_test - ask kernel whether a given compression method - * is acceptable for use. - */ - -int ccp_test (int unit, u_char *opt_ptr, int opt_len, int for_transmit) -{ - struct ppp_option_data data; - - memset (&data, '\0', sizeof (data)); - data.ptr = opt_ptr; - data.length = opt_len; - data.transmit = for_transmit; - - if (ioctl(ppp_dev_fd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0) - return 1; - - return (errno == ENOBUFS)? 0: -1; -} - -/******************************************************************** - * - * ccp_flags_set - inform kernel about the current state of CCP. - */ - -void ccp_flags_set (int unit, int isopen, int isup) -{ - if (still_ppp()) { - int x = get_flags(ppp_dev_fd); - x = isopen? x | SC_CCP_OPEN : x &~ SC_CCP_OPEN; - x = isup? x | SC_CCP_UP : x &~ SC_CCP_UP; - set_flags (ppp_dev_fd, x); - } -} - -#ifdef PPP_FILTER -/* - * set_filters - set the active and pass filters in the kernel driver. - */ -int set_filters(struct bpf_program *pass, struct bpf_program *active) -{ - struct sock_fprog fp; - - fp.len = pass->bf_len; - fp.filter = (struct sock_filter *) pass->bf_insns; - if (ioctl(ppp_dev_fd, PPPIOCSPASS, &fp) < 0) { - if (errno == ENOTTY) - warn("kernel does not support PPP filtering"); - else - error("Couldn't set pass-filter in kernel: %m"); - return 0; - } - fp.len = active->bf_len; - fp.filter = (struct sock_filter *) active->bf_insns; - if (ioctl(ppp_dev_fd, PPPIOCSACTIVE, &fp) < 0) { - error("Couldn't set active-filter in kernel: %m"); - return 0; - } - return 1; -} -#endif /* PPP_FILTER */ - -/******************************************************************** - * - * get_idle_time - return how long the link has been idle. - */ -int -get_idle_time(u, ip) - int u; - struct ppp_idle *ip; -{ - return ioctl(ppp_dev_fd, PPPIOCGIDLE, ip) >= 0; -} - -/******************************************************************** - * - * get_ppp_stats - return statistics for the link. - */ -int -get_ppp_stats(u, stats) - int u; - struct pppd_stats *stats; -{ - struct ifpppstatsreq req; - - memset (&req, 0, sizeof (req)); - - req.stats_ptr = (caddr_t) &req.stats; - strlcpy(req.ifr__name, ifname, sizeof(req.ifr__name)); - if (ioctl(sock_fd, SIOCGPPPSTATS, &req) < 0) { - error("Couldn't get PPP statistics: %m"); - return 0; - } - stats->bytes_in = req.stats.p.ppp_ibytes; - stats->bytes_out = req.stats.p.ppp_obytes; - return 1; -} - -/******************************************************************** - * - * ccp_fatal_error - returns 1 if decompression was disabled as a - * result of an error detected after decompression of a packet, - * 0 otherwise. This is necessary because of patent nonsense. - */ - -int ccp_fatal_error (int unit) -{ - int x = get_flags(ppp_dev_fd); - - return x & SC_DC_FERROR; -} - -/******************************************************************** - * - * path_to_procfs - find the path to the proc file system mount point - */ -static char proc_path[MAXPATHLEN]; -static int proc_path_len; - -static char *path_to_procfs(const char *tail) -{ - struct mntent *mntent; - FILE *fp; - - if (proc_path_len == 0) { - /* Default the mount location of /proc */ - strlcpy (proc_path, "/proc", sizeof(proc_path)); - proc_path_len = 5; - fp = fopen(MOUNTED, "r"); - if (fp != NULL) { - while ((mntent = getmntent(fp)) != NULL) { - if (strcmp(mntent->mnt_type, MNTTYPE_IGNORE) == 0) - continue; - if (strcmp(mntent->mnt_type, "proc") == 0) { - strlcpy(proc_path, mntent->mnt_dir, sizeof(proc_path)); - proc_path_len = strlen(proc_path); - break; - } - } - fclose (fp); - } - } - - strlcpy(proc_path + proc_path_len, tail, - sizeof(proc_path) - proc_path_len); - return proc_path; -} - -/* - * /proc/net/route parsing stuff. - */ -#define ROUTE_MAX_COLS 12 -FILE *route_fd = (FILE *) 0; -static char route_buffer[512]; -static int route_dev_col, route_dest_col, route_gw_col; -static int route_flags_col, route_mask_col; -static int route_num_cols; - -static int open_route_table (void); -static void close_route_table (void); -static int read_route_table (struct rtentry *rt); - -/******************************************************************** - * - * close_route_table - close the interface to the route table - */ - -static void close_route_table (void) -{ - if (route_fd != (FILE *) 0) { - fclose (route_fd); - route_fd = (FILE *) 0; - } -} - -/******************************************************************** - * - * open_route_table - open the interface to the route table - */ -static char route_delims[] = " \t\n"; - -static int open_route_table (void) -{ - char *path; - - close_route_table(); - - path = path_to_procfs("/net/route"); - route_fd = fopen (path, "r"); - if (route_fd == NULL) { - error("can't open routing table %s: %m", path); - return 0; - } - - route_dev_col = 0; /* default to usual columns */ - route_dest_col = 1; - route_gw_col = 2; - route_flags_col = 3; - route_mask_col = 7; - route_num_cols = 8; - - /* parse header line */ - if (fgets(route_buffer, sizeof(route_buffer), route_fd) != 0) { - char *p = route_buffer, *q; - int col; - for (col = 0; col < ROUTE_MAX_COLS; ++col) { - int used = 1; - if ((q = strtok(p, route_delims)) == 0) - break; - if (strcasecmp(q, "iface") == 0) - route_dev_col = col; - else if (strcasecmp(q, "destination") == 0) - route_dest_col = col; - else if (strcasecmp(q, "gateway") == 0) - route_gw_col = col; - else if (strcasecmp(q, "flags") == 0) - route_flags_col = col; - else if (strcasecmp(q, "mask") == 0) - route_mask_col = col; - else - used = 0; - if (used && col >= route_num_cols) - route_num_cols = col + 1; - p = NULL; - } - } - - return 1; -} - -/******************************************************************** - * - * read_route_table - read the next entry from the route table - */ - -static int read_route_table(struct rtentry *rt) -{ - char *cols[ROUTE_MAX_COLS], *p; - int col; - - memset (rt, '\0', sizeof (struct rtentry)); - - if (fgets (route_buffer, sizeof (route_buffer), route_fd) == (char *) 0) - return 0; - - p = route_buffer; - for (col = 0; col < route_num_cols; ++col) { - cols[col] = strtok(p, route_delims); - if (cols[col] == NULL) - return 0; /* didn't get enough columns */ - p = NULL; - } - - SIN_ADDR(rt->rt_dst) = strtoul(cols[route_dest_col], NULL, 16); - SIN_ADDR(rt->rt_gateway) = strtoul(cols[route_gw_col], NULL, 16); - SIN_ADDR(rt->rt_genmask) = strtoul(cols[route_mask_col], NULL, 16); - - rt->rt_flags = (short) strtoul(cols[route_flags_col], NULL, 16); - rt->rt_dev = cols[route_dev_col]; - - return 1; -} - -/******************************************************************** - * - * defaultroute_exists - determine if there is a default route - */ - -static int defaultroute_exists (struct rtentry *rt) -{ - int result = 0; - - if (!open_route_table()) - return 0; - - while (read_route_table(rt) != 0) { - if ((rt->rt_flags & RTF_UP) == 0) - continue; - - if (kernel_version > KVERSION(2,1,0) && SIN_ADDR(rt->rt_genmask) != 0) - continue; - if (SIN_ADDR(rt->rt_dst) == 0L) { - result = 1; - break; - } - } - - close_route_table(); - return result; -} - -/* - * have_route_to - determine if the system has any route to - * a given IP address. `addr' is in network byte order. - * Return value is 1 if yes, 0 if no, -1 if don't know. - * For demand mode to work properly, we have to ignore routes - * through our own interface. - */ -int have_route_to(u_int32_t addr) -{ - struct rtentry rt; - int result = 0; - - if (!open_route_table()) - return -1; /* don't know */ - - while (read_route_table(&rt)) { - if ((rt.rt_flags & RTF_UP) == 0 || strcmp(rt.rt_dev, ifname) == 0) - continue; - if ((addr & SIN_ADDR(rt.rt_genmask)) == SIN_ADDR(rt.rt_dst)) { - result = 1; - break; - } - } - - close_route_table(); - return result; -} - -/******************************************************************** - * - * sifdefaultroute - assign a default route through the address given. - */ - -int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway) -{ - struct rtentry rt; - - if (defaultroute_exists(&rt) && strcmp(rt.rt_dev, ifname) != 0) { - u_int32_t old_gateway = SIN_ADDR(rt.rt_gateway); - - if (old_gateway != gateway) - error("not replacing existing default route to %s [%I]", - rt.rt_dev, old_gateway); - return 0; - } - - memset (&rt, '\0', sizeof (rt)); - SET_SA_FAMILY (rt.rt_dst, AF_INET); - SET_SA_FAMILY (rt.rt_gateway, AF_INET); - - if (kernel_version > KVERSION(2,1,0)) { - SET_SA_FAMILY (rt.rt_genmask, AF_INET); - SIN_ADDR(rt.rt_genmask) = 0L; - } - - SIN_ADDR(rt.rt_gateway) = gateway; - - rt.rt_flags = RTF_UP | RTF_GATEWAY; - if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) { - if ( ! ok_error ( errno )) - error("default route ioctl(SIOCADDRT): %m(%d)", errno); - return 0; - } - - default_route_gateway = gateway; - return 1; -} - -/******************************************************************** - * - * cifdefaultroute - delete a default route through the address given. - */ - -int cifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway) -{ - struct rtentry rt; - - default_route_gateway = 0; - - memset (&rt, '\0', sizeof (rt)); - SET_SA_FAMILY (rt.rt_dst, AF_INET); - SET_SA_FAMILY (rt.rt_gateway, AF_INET); - - if (kernel_version > KVERSION(2,1,0)) { - SET_SA_FAMILY (rt.rt_genmask, AF_INET); - SIN_ADDR(rt.rt_genmask) = 0L; - } - - SIN_ADDR(rt.rt_gateway) = gateway; - - rt.rt_flags = RTF_UP | RTF_GATEWAY; - if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) { - if (still_ppp()) { - if ( ! ok_error ( errno )) - error("default route ioctl(SIOCDELRT): %m (%d)", errno); - return 0; - } - } - - return 1; -} - -/******************************************************************** - * - * sifproxyarp - Make a proxy ARP entry for the peer. - */ - -int sifproxyarp (int unit, u_int32_t his_adr) -{ - struct arpreq arpreq; - char *forw_path; - - if (has_proxy_arp == 0) { - memset (&arpreq, '\0', sizeof(arpreq)); - - SET_SA_FAMILY(arpreq.arp_pa, AF_INET); - SIN_ADDR(arpreq.arp_pa) = his_adr; - arpreq.arp_flags = ATF_PERM | ATF_PUBL; -/* - * Get the hardware address of an interface on the same subnet - * as our local address. - */ - if (!get_ether_addr(his_adr, &arpreq.arp_ha, proxy_arp_dev, - sizeof(proxy_arp_dev))) { - error("Cannot determine ethernet address for proxy ARP"); - return 0; - } - strlcpy(arpreq.arp_dev, proxy_arp_dev, sizeof(arpreq.arp_dev)); - - if (ioctl(sock_fd, SIOCSARP, (caddr_t)&arpreq) < 0) { - if ( ! ok_error ( errno )) - error("ioctl(SIOCSARP): %m(%d)", errno); - return 0; - } - proxy_arp_addr = his_adr; - has_proxy_arp = 1; - - if (tune_kernel) { - forw_path = path_to_procfs("/sys/net/ipv4/ip_forward"); - if (forw_path != 0) { - int fd = open(forw_path, O_WRONLY); - if (fd >= 0) { - if (write(fd, "1", 1) != 1) - error("Couldn't enable IP forwarding: %m"); - close(fd); - } - } - } - } - - return 1; -} - -/******************************************************************** - * - * cifproxyarp - Delete the proxy ARP entry for the peer. - */ - -int cifproxyarp (int unit, u_int32_t his_adr) -{ - struct arpreq arpreq; - - if (has_proxy_arp) { - has_proxy_arp = 0; - memset (&arpreq, '\0', sizeof(arpreq)); - SET_SA_FAMILY(arpreq.arp_pa, AF_INET); - SIN_ADDR(arpreq.arp_pa) = his_adr; - arpreq.arp_flags = ATF_PERM | ATF_PUBL; - strlcpy(arpreq.arp_dev, proxy_arp_dev, sizeof(arpreq.arp_dev)); - - if (ioctl(sock_fd, SIOCDARP, (caddr_t)&arpreq) < 0) { - if ( ! ok_error ( errno )) - warn("ioctl(SIOCDARP): %m(%d)", errno); - return 0; - } - } - return 1; -} - -/******************************************************************** - * - * get_ether_addr - get the hardware address of an interface on the - * the same subnet as ipaddr. - */ - -static int get_ether_addr (u_int32_t ipaddr, - struct sockaddr *hwaddr, - char *name, int namelen) -{ - struct ifreq *ifr, *ifend; - u_int32_t ina, mask; - char *aliasp; - struct ifreq ifreq; - struct ifconf ifc; - struct ifreq ifs[MAX_IFS]; - - ifc.ifc_len = sizeof(ifs); - ifc.ifc_req = ifs; - if (ioctl(sock_fd, SIOCGIFCONF, &ifc) < 0) { - if ( ! ok_error ( errno )) - error("ioctl(SIOCGIFCONF): %m(%d)", errno); - return 0; - } - - SYSDEBUG ((LOG_DEBUG, "proxy arp: scanning %d interfaces for IP %s", - ifc.ifc_len / sizeof(struct ifreq), ip_ntoa(ipaddr))); -/* - * Scan through looking for an interface with an Internet - * address on the same subnet as `ipaddr'. - */ - ifend = ifs + (ifc.ifc_len / sizeof(struct ifreq)); - for (ifr = ifc.ifc_req; ifr < ifend; ifr++) { - if (ifr->ifr_addr.sa_family == AF_INET) { - ina = SIN_ADDR(ifr->ifr_addr); - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - SYSDEBUG ((LOG_DEBUG, "proxy arp: examining interface %s", - ifreq.ifr_name)); -/* - * Check that the interface is up, and not point-to-point - * nor loopback. - */ - if (ioctl(sock_fd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - - if (((ifreq.ifr_flags ^ FLAGS_GOOD) & FLAGS_MASK) != 0) - continue; -/* - * Get its netmask and check that it's on the right subnet. - */ - if (ioctl(sock_fd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - - mask = SIN_ADDR(ifreq.ifr_addr); - SYSDEBUG ((LOG_DEBUG, "proxy arp: interface addr %s mask %lx", - ip_ntoa(ina), ntohl(mask))); - - if (((ipaddr ^ ina) & mask) != 0) - continue; - break; - } - } - - if (ifr >= ifend) - return 0; - - strlcpy(name, ifreq.ifr_name, namelen); - - /* trim off the :1 in eth0:1 */ - aliasp = strchr(name, ':'); - if (aliasp != 0) - *aliasp = 0; - - info("found interface %s for proxy arp", name); -/* - * Now get the hardware address. - */ - memset (&ifreq.ifr_hwaddr, 0, sizeof (struct sockaddr)); - if (ioctl (sock_fd, SIOCGIFHWADDR, &ifreq) < 0) { - error("SIOCGIFHWADDR(%s): %m(%d)", ifreq.ifr_name, errno); - return 0; - } - - memcpy (hwaddr, - &ifreq.ifr_hwaddr, - sizeof (struct sockaddr)); - - SYSDEBUG ((LOG_DEBUG, - "proxy arp: found hwaddr %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", - (int) ((unsigned char *) &hwaddr->sa_data)[0], - (int) ((unsigned char *) &hwaddr->sa_data)[1], - (int) ((unsigned char *) &hwaddr->sa_data)[2], - (int) ((unsigned char *) &hwaddr->sa_data)[3], - (int) ((unsigned char *) &hwaddr->sa_data)[4], - (int) ((unsigned char *) &hwaddr->sa_data)[5], - (int) ((unsigned char *) &hwaddr->sa_data)[6], - (int) ((unsigned char *) &hwaddr->sa_data)[7])); - return 1; -} - -/* - * get_if_hwaddr - get the hardware address for the specified - * network interface device. - */ -int -get_if_hwaddr(u_char *addr, char *name) -{ - struct ifreq ifreq; - int ret, sock_fd; - - sock_fd = socket(AF_INET, SOCK_DGRAM, 0); - if (sock_fd < 0) - return 0; - memset(&ifreq.ifr_hwaddr, 0, sizeof(struct sockaddr)); - strlcpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name)); - ret = ioctl(sock_fd, SIOCGIFHWADDR, &ifreq); - close(sock_fd); - if (ret >= 0) - memcpy(addr, ifreq.ifr_hwaddr.sa_data, 6); - return ret; -} - -/* - * get_first_ethernet - return the name of the first ethernet-style - * interface on this system. - */ -char * -get_first_ethernet() -{ - return "eth0"; -} - -/******************************************************************** - * - * Return user specified netmask, modified by any mask we might determine - * for address `addr' (in network byte order). - * Here we scan through the system's list of interfaces, looking for - * any non-point-to-point interfaces which might appear to be on the same - * network as `addr'. If we find any, we OR in their netmask to the - * user-specified netmask. - */ - -u_int32_t GetMask (u_int32_t addr) -{ - u_int32_t mask, nmask, ina; - struct ifreq *ifr, *ifend, ifreq; - struct ifconf ifc; - struct ifreq ifs[MAX_IFS]; - - addr = ntohl(addr); - - if (IN_CLASSA(addr)) /* determine network mask for address class */ - nmask = IN_CLASSA_NET; - else if (IN_CLASSB(addr)) - nmask = IN_CLASSB_NET; - else - nmask = IN_CLASSC_NET; - - /* class D nets are disallowed by bad_ip_adrs */ - mask = netmask | htonl(nmask); -/* - * Scan through the system's network interfaces. - */ - ifc.ifc_len = sizeof(ifs); - ifc.ifc_req = ifs; - if (ioctl(sock_fd, SIOCGIFCONF, &ifc) < 0) { - if ( ! ok_error ( errno )) - warn("ioctl(SIOCGIFCONF): %m(%d)", errno); - return mask; - } - - ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); - for (ifr = ifc.ifc_req; ifr < ifend; ifr++) { -/* - * Check the interface's internet address. - */ - if (ifr->ifr_addr.sa_family != AF_INET) - continue; - ina = SIN_ADDR(ifr->ifr_addr); - if (((ntohl(ina) ^ addr) & nmask) != 0) - continue; -/* - * Check that the interface is up, and not point-to-point nor loopback. - */ - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - if (ioctl(sock_fd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - - if (((ifreq.ifr_flags ^ FLAGS_GOOD) & FLAGS_MASK) != 0) - continue; -/* - * Get its netmask and OR it into our mask. - */ - if (ioctl(sock_fd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - mask |= SIN_ADDR(ifreq.ifr_addr); - break; - } - return mask; -} - -/******************************************************************** - * - * Internal routine to decode the version.modification.patch level - */ - -static void decode_version (char *buf, int *version, - int *modification, int *patch) -{ - char *endp; - - *version = (int) strtoul (buf, &endp, 10); - *modification = 0; - *patch = 0; - - if (endp != buf && *endp == '.') { - buf = endp + 1; - *modification = (int) strtoul (buf, &endp, 10); - if (endp != buf && *endp == '.') { - buf = endp + 1; - *patch = (int) strtoul (buf, &buf, 10); - } - } -} - -/******************************************************************** - * - * Procedure to determine if the PPP line discipline is registered. - */ - -static int -ppp_registered(void) -{ - int local_fd; - int mfd = -1; - int ret = 0; - char slave[16]; - - /* - * We used to open the serial device and set it to the ppp line - * discipline here, in order to create a ppp unit. But that is - * not a good idea - the user might have specified a device that - * they can't open (permission, or maybe it doesn't really exist). - * So we grab a pty master/slave pair and use that. - */ - if (!get_pty(&mfd, &local_fd, slave, 0)) { - no_ppp_msg = "Couldn't determine if PPP is supported (no free ptys)"; - return 0; - } - - /* - * Try to put the device into the PPP discipline. - */ - if (ioctl(local_fd, TIOCSETD, &ppp_disc) < 0) { - error("ioctl(TIOCSETD(PPP)): %m(%d)", errno); - } else - ret = 1; - - close(local_fd); - close(mfd); - return ret; -} - -/******************************************************************** - * - * ppp_available - check whether the system has any ppp interfaces - * (in fact we check whether we can do an ioctl on ppp0). - */ - -int ppp_available(void) -{ - int s, ok, fd; - struct ifreq ifr; - int size; - int my_version, my_modification, my_patch; - int osmaj, osmin, ospatch; - - no_ppp_msg = - "This system lacks kernel support for PPP. This could be because\n" - "the PPP kernel module could not be loaded, or because PPP was not\n" - "included in the kernel configuration. If PPP was included as a\n" - "module, try `/sbin/modprobe -v ppp'. If that fails, check that\n" - "ppp.o exists in /lib/modules/`uname -r`/net.\n" - "See README.linux file in the ppp distribution for more details.\n"; - - /* get the kernel version now, since we are called before sys_init */ - uname(&utsname); - osmaj = osmin = ospatch = 0; - sscanf(utsname.release, "%d.%d.%d", &osmaj, &osmin, &ospatch); - kernel_version = KVERSION(osmaj, osmin, ospatch); - - fd = open("/dev/ppp", O_RDWR); -#if 0 - if (fd < 0 && errno == ENOENT) { - /* try making it and see if that helps. */ - if (mknod("/dev/ppp", S_IFCHR | S_IRUSR | S_IWUSR, - makedev(108, 0)) >= 0) { - fd = open("/dev/ppp", O_RDWR); - if (fd >= 0) - info("Created /dev/ppp device node"); - else - unlink("/dev/ppp"); /* didn't work, undo the mknod */ - } else if (errno == EEXIST) { - fd = open("/dev/ppp", O_RDWR); - } - } -#endif /* 0 */ - if (fd >= 0) { - new_style_driver = 1; - - /* XXX should get from driver */ - driver_version = 2; - driver_modification = 4; - driver_patch = 0; - close(fd); - return 1; - } - if (kernel_version >= KVERSION(2,3,13)) { - if (errno == ENOENT) - no_ppp_msg = - "pppd is unable to open the /dev/ppp device.\n" - "You need to create the /dev/ppp device node by\n" - "executing the following command as root:\n" - " mknod /dev/ppp c 108 0\n"; - return 0; - } - -/* - * Open a socket for doing the ioctl operations. - */ - s = socket(AF_INET, SOCK_DGRAM, 0); - if (s < 0) - return 0; - - strlcpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name)); - ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0; -/* - * If the device did not exist then attempt to create one by putting the - * current tty into the PPP discipline. If this works then obtain the - * flags for the device again. - */ - if (!ok) { - if (ppp_registered()) { - strlcpy (ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name)); - ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0; - } - } -/* - * Ensure that the hardware address is for PPP and not something else - */ - if (ok) - ok = ioctl (s, SIOCGIFHWADDR, (caddr_t) &ifr) >= 0; - - if (ok && ((ifr.ifr_hwaddr.sa_family & ~0xFF) != ARPHRD_PPP)) - ok = 0; - -/* - * This is the PPP device. Validate the version of the driver at this - * point to ensure that this program will work with the driver. - */ - if (ok) { - char abBuffer [1024]; - - ifr.ifr_data = abBuffer; - size = ioctl (s, SIOCGPPPVER, (caddr_t) &ifr); - if (size < 0) { - error("Couldn't read driver version: %m"); - ok = 0; - no_ppp_msg = "Sorry, couldn't verify kernel driver version\n"; - - } else { - decode_version(abBuffer, - &driver_version, - &driver_modification, - &driver_patch); -/* - * Validate the version of the driver against the version that we used. - */ - decode_version(VERSION, - &my_version, - &my_modification, - &my_patch); - - /* The version numbers must match */ - if (driver_version != my_version) - ok = 0; - - /* The modification levels must be legal */ - if (driver_modification < 3) { - if (driver_modification >= 2) { - /* we can cope with 2.2.0 and above */ - driver_is_old = 1; - } else { - ok = 0; - } - } - - close (s); - if (!ok) { - slprintf(route_buffer, sizeof(route_buffer), - "Sorry - PPP driver version %d.%d.%d is out of date\n", - driver_version, driver_modification, driver_patch); - - no_ppp_msg = route_buffer; - } - } - } - return ok; -} - -/******************************************************************** - * - * Update the wtmp file with the appropriate user name and tty device. - */ - -void logwtmp (const char *line, const char *name, const char *host) -{ - struct utmp ut, *utp; - pid_t mypid = getpid(); -#if __GLIBC__ < 2 - int wtmp; -#endif - -/* - * Update the signon database for users. - * Christoph Lameter: Copied from poeigl-1.36 Jan 3, 1996 - */ - utmpname(_PATH_UTMP); - setutent(); - while ((utp = getutent()) && (utp->ut_pid != mypid)) - /* nothing */; - - /* Is this call really necessary? There is another one after the 'put' */ - endutent(); - - if (utp) - memcpy(&ut, utp, sizeof(ut)); - else - /* some gettys/telnetds don't initialize utmp... */ - memset(&ut, 0, sizeof(ut)); - - if (ut.ut_id[0] == 0) - strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id)); - - strncpy(ut.ut_user, name, sizeof(ut.ut_user)); - strncpy(ut.ut_line, line, sizeof(ut.ut_line)); - - time(&ut.ut_time); - - ut.ut_type = USER_PROCESS; - ut.ut_pid = mypid; - - /* Insert the host name if one is supplied */ - if (*host) - strncpy (ut.ut_host, host, sizeof(ut.ut_host)); - - /* Insert the IP address of the remote system if IP is enabled */ - if (ipcp_protent.enabled_flag && ipcp_hisoptions[0].neg_addr) - memcpy(&ut.ut_addr, (char *) &ipcp_hisoptions[0].hisaddr, - sizeof(ut.ut_addr)); - - /* CL: Makes sure that the logout works */ - if (*host == 0 && *name==0) - ut.ut_host[0]=0; - - pututline(&ut); - endutent(); -/* - * Update the wtmp file. - */ -#if __GLIBC__ >= 2 - updwtmp(_PATH_WTMP, &ut); -#else - wtmp = open(_PATH_WTMP, O_APPEND|O_WRONLY); - if (wtmp >= 0) { - flock(wtmp, LOCK_EX); - - if (write (wtmp, (char *)&ut, sizeof(ut)) != sizeof(ut)) - warn("error writing %s: %m", _PATH_WTMP); - - flock(wtmp, LOCK_UN); - - close (wtmp); - } -#endif -} - - -/******************************************************************** - * - * sifvjcomp - config tcp header compression - */ - -int sifvjcomp (int u, int vjcomp, int cidcomp, int maxcid) -{ - u_int x = get_flags(ppp_dev_fd); - - if (vjcomp) { - if (ioctl (ppp_dev_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) { - if (! ok_error (errno)) - error("ioctl(PPPIOCSMAXCID): %m(%d)", errno); - vjcomp = 0; - } - } - - x = vjcomp ? x | SC_COMP_TCP : x &~ SC_COMP_TCP; - x = cidcomp ? x & ~SC_NO_TCP_CCID : x | SC_NO_TCP_CCID; - set_flags (ppp_dev_fd, x); - - return 1; -} - -/******************************************************************** - * - * sifup - Config the interface up and enable IP packets to pass. - */ - -int sifup(int u) -{ - struct ifreq ifr; - - memset (&ifr, '\0', sizeof (ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - if (ioctl(sock_fd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl (SIOCGIFFLAGS): %m(%d)", errno); - return 0; - } - - ifr.ifr_flags |= (IFF_UP | IFF_POINTOPOINT); - if (ioctl(sock_fd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFFLAGS): %m(%d)", errno); - return 0; - } - if_is_up++; - - return 1; -} - -/******************************************************************** - * - * sifdown - Disable the indicated protocol and config the interface - * down if there are no remaining protocols. - */ - -int sifdown (int u) -{ - struct ifreq ifr; - - if (if_is_up && --if_is_up > 0) - return 1; - - memset (&ifr, '\0', sizeof (ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - if (ioctl(sock_fd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl (SIOCGIFFLAGS): %m(%d)", errno); - return 0; - } - - ifr.ifr_flags &= ~IFF_UP; - ifr.ifr_flags |= IFF_POINTOPOINT; - if (ioctl(sock_fd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFFLAGS): %m(%d)", errno); - return 0; - } - return 1; -} - -/******************************************************************** - * - * sifaddr - Config the interface IP addresses and netmask. - */ - -int sifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr, - u_int32_t net_mask) -{ - struct ifreq ifr; - struct rtentry rt; - - memset (&ifr, '\0', sizeof (ifr)); - memset (&rt, '\0', sizeof (rt)); - - SET_SA_FAMILY (ifr.ifr_addr, AF_INET); - SET_SA_FAMILY (ifr.ifr_dstaddr, AF_INET); - SET_SA_FAMILY (ifr.ifr_netmask, AF_INET); - - strlcpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); -/* - * Set our IP address - */ - SIN_ADDR(ifr.ifr_addr) = our_adr; - if (ioctl(sock_fd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { - if (errno != EEXIST) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFADDR): %m(%d)", errno); - } - else { - warn("ioctl(SIOCSIFADDR): Address already exists"); - } - return (0); - } -/* - * Set the gateway address - */ - SIN_ADDR(ifr.ifr_dstaddr) = his_adr; - if (ioctl(sock_fd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFDSTADDR): %m(%d)", errno); - return (0); - } -/* - * Set the netmask. - * For recent kernels, force the netmask to 255.255.255.255. - */ - if (kernel_version >= KVERSION(2,1,16)) - net_mask = ~0L; - if (net_mask != 0) { - SIN_ADDR(ifr.ifr_netmask) = net_mask; - if (ioctl(sock_fd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCSIFNETMASK): %m(%d)", errno); - return (0); - } - } -/* - * Add the device route - */ - if (kernel_version < KVERSION(2,1,16)) { - SET_SA_FAMILY (rt.rt_dst, AF_INET); - SET_SA_FAMILY (rt.rt_gateway, AF_INET); - rt.rt_dev = ifname; - - SIN_ADDR(rt.rt_gateway) = 0L; - SIN_ADDR(rt.rt_dst) = his_adr; - rt.rt_flags = RTF_UP | RTF_HOST; - - if (kernel_version > KVERSION(2,1,0)) { - SET_SA_FAMILY (rt.rt_genmask, AF_INET); - SIN_ADDR(rt.rt_genmask) = -1L; - } - - if (ioctl(sock_fd, SIOCADDRT, &rt) < 0) { - if (! ok_error (errno)) - error("ioctl(SIOCADDRT) device route: %m(%d)", errno); - return (0); - } - } - - /* set ip_dynaddr in demand mode if address changes */ - if (demand && tune_kernel && !dynaddr_set - && our_old_addr && our_old_addr != our_adr) { - /* set ip_dynaddr if possible */ - char *path; - int fd; - - path = path_to_procfs("/sys/net/ipv4/ip_dynaddr"); - if (path != 0 && (fd = open(path, O_WRONLY)) >= 0) { - if (write(fd, "1", 1) != 1) - error("Couldn't enable dynamic IP addressing: %m"); - close(fd); - } - dynaddr_set = 1; /* only 1 attempt */ - } - our_old_addr = 0; - - return 1; -} - -/******************************************************************** - * - * cifaddr - Clear the interface IP addresses, and delete routes - * through the interface if possible. - */ - -int cifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr) -{ - struct ifreq ifr; - - if (kernel_version < KVERSION(2,1,16)) { -/* - * Delete the route through the device - */ - struct rtentry rt; - memset (&rt, '\0', sizeof (rt)); - - SET_SA_FAMILY (rt.rt_dst, AF_INET); - SET_SA_FAMILY (rt.rt_gateway, AF_INET); - rt.rt_dev = ifname; - - SIN_ADDR(rt.rt_gateway) = 0; - SIN_ADDR(rt.rt_dst) = his_adr; - rt.rt_flags = RTF_UP | RTF_HOST; - - if (kernel_version > KVERSION(2,1,0)) { - SET_SA_FAMILY (rt.rt_genmask, AF_INET); - SIN_ADDR(rt.rt_genmask) = -1L; - } - - if (ioctl(sock_fd, SIOCDELRT, &rt) < 0 && errno != ESRCH) { - if (still_ppp() && ! ok_error (errno)) - error("ioctl(SIOCDELRT) device route: %m(%d)", errno); - return (0); - } - } - - /* This way it is possible to have an IPX-only or IPv6-only interface */ - memset(&ifr, 0, sizeof(ifr)); - SET_SA_FAMILY(ifr.ifr_addr, AF_INET); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - - if (ioctl(sock_fd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) { - error("ioctl(SIOCSIFADDR): %m(%d)", errno); - return 0; - } - } - - our_old_addr = our_adr; - - return 1; -} - -#ifdef INET6 -/******************************************************************** - * - * sif6addr - Config the interface with an IPv6 link-local address - */ -int sif6addr (int unit, eui64_t our_eui64, eui64_t his_eui64) -{ - struct in6_ifreq ifr6; - struct ifreq ifr; - struct in6_rtmsg rt6; - - if (sock6_fd < 0) { - errno = -sock6_fd; - error("IPv6 socket creation failed: %m"); - return 0; - } - memset(&ifr, 0, sizeof (ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) { - error("sif6addr: ioctl(SIOCGIFINDEX): %m (%d)", errno); - return 0; - } - - /* Local interface */ - memset(&ifr6, 0, sizeof(ifr6)); - IN6_LLADDR_FROM_EUI64(ifr6.ifr6_addr, our_eui64); - ifr6.ifr6_ifindex = ifr.ifr_ifindex; - ifr6.ifr6_prefixlen = 10; - - if (ioctl(sock6_fd, SIOCSIFADDR, &ifr6) < 0) { - error("sif6addr: ioctl(SIOCSIFADDR): %m (%d)", errno); - return 0; - } - - /* Route to remote host */ - memset(&rt6, 0, sizeof(rt6)); - IN6_LLADDR_FROM_EUI64(rt6.rtmsg_dst, his_eui64); - rt6.rtmsg_flags = RTF_UP; - rt6.rtmsg_dst_len = 10; - rt6.rtmsg_ifindex = ifr.ifr_ifindex; - rt6.rtmsg_metric = 1; - - if (ioctl(sock6_fd, SIOCADDRT, &rt6) < 0) { - error("sif6addr: ioctl(SIOCADDRT): %m (%d)", errno); - return 0; - } - - return 1; -} - - -/******************************************************************** - * - * cif6addr - Remove IPv6 address from interface - */ -int cif6addr (int unit, eui64_t our_eui64, eui64_t his_eui64) -{ - struct ifreq ifr; - struct in6_ifreq ifr6; - - if (sock6_fd < 0) { - errno = -sock6_fd; - error("IPv6 socket creation failed: %m"); - return 0; - } - memset(&ifr, 0, sizeof(ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) { - error("cif6addr: ioctl(SIOCGIFINDEX): %m (%d)", errno); - return 0; - } - - memset(&ifr6, 0, sizeof(ifr6)); - IN6_LLADDR_FROM_EUI64(ifr6.ifr6_addr, our_eui64); - ifr6.ifr6_ifindex = ifr.ifr_ifindex; - ifr6.ifr6_prefixlen = 10; - - if (ioctl(sock6_fd, SIOCDIFADDR, &ifr6) < 0) { - if (errno != EADDRNOTAVAIL) { - if (! ok_error (errno)) - error("cif6addr: ioctl(SIOCDIFADDR): %m (%d)", errno); - } - else { - warn("cif6addr: ioctl(SIOCDIFADDR): No such address"); - } - return (0); - } - return 1; -} -#endif /* INET6 */ - -/* - * get_pty - get a pty master/slave pair and chown the slave side - * to the uid given. Assumes slave_name points to >= 16 bytes of space. - */ -int -get_pty(master_fdp, slave_fdp, slave_name, uid) - int *master_fdp; - int *slave_fdp; - char *slave_name; - int uid; -{ - int i, mfd, sfd = -1; - char pty_name[16]; - struct termios tios; - -#ifdef TIOCGPTN - /* - * Try the unix98 way first. - */ - mfd = open("/dev/ptmx", O_RDWR); - if (mfd >= 0) { - int ptn; - if (ioctl(mfd, TIOCGPTN, &ptn) >= 0) { - slprintf(pty_name, sizeof(pty_name), "/dev/pts/%d", ptn); - chmod(pty_name, S_IRUSR | S_IWUSR); -#ifdef TIOCSPTLCK - ptn = 0; - if (ioctl(mfd, TIOCSPTLCK, &ptn) < 0) - warn("Couldn't unlock pty slave %s: %m", pty_name); -#endif - if ((sfd = open(pty_name, O_RDWR | O_NOCTTY)) < 0) - warn("Couldn't open pty slave %s: %m", pty_name); - } - } -#endif /* TIOCGPTN */ - - if (sfd < 0) { - /* the old way - scan through the pty name space */ - for (i = 0; i < 64; ++i) { - slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x", - 'p' + i / 16, i % 16); - mfd = open(pty_name, O_RDWR, 0); - if (mfd >= 0) { - pty_name[5] = 't'; - sfd = open(pty_name, O_RDWR | O_NOCTTY, 0); - if (sfd >= 0) { - fchown(sfd, uid, -1); - fchmod(sfd, S_IRUSR | S_IWUSR); - break; - } - close(mfd); - } - } - } - - if (sfd < 0) - return 0; - - strlcpy(slave_name, pty_name, 16); - *master_fdp = mfd; - *slave_fdp = sfd; - if (tcgetattr(sfd, &tios) == 0) { - tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB); - tios.c_cflag |= CS8 | CREAD | CLOCAL; - tios.c_iflag = IGNPAR; - tios.c_oflag = 0; - tios.c_lflag = 0; - if (tcsetattr(sfd, TCSAFLUSH, &tios) < 0) - warn("couldn't set attributes on pty: %m"); - } else - warn("couldn't get attributes on pty: %m"); - - return 1; -} - -/******************************************************************** - * - * open_loopback - open the device we use for getting packets - * in demand mode. Under Linux, we use a pty master/slave pair. - */ -int -open_ppp_loopback(void) -{ - int flags; - - looped = 1; - if (new_style_driver) { - /* allocate ourselves a ppp unit */ - if (make_ppp_unit() < 0) - die(1); - set_flags(ppp_dev_fd, SC_LOOP_TRAFFIC); - set_kdebugflag(kdebugflag); - ppp_fd = -1; - return ppp_dev_fd; - } - - if (!get_pty(&master_fd, &slave_fd, loop_name, 0)) - fatal("No free pty for loopback"); - SYSDEBUG(("using %s for loopback", loop_name)); - - set_ppp_fd(slave_fd); - - flags = fcntl(master_fd, F_GETFL); - if (flags == -1 || - fcntl(master_fd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("couldn't set master loopback to nonblock: %m(%d)", errno); - - flags = fcntl(ppp_fd, F_GETFL); - if (flags == -1 || - fcntl(ppp_fd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("couldn't set slave loopback to nonblock: %m(%d)", errno); - - if (ioctl(ppp_fd, TIOCSETD, &ppp_disc) < 0) - fatal("ioctl(TIOCSETD): %m(%d)", errno); -/* - * Find out which interface we were given. - */ - if (ioctl(ppp_fd, PPPIOCGUNIT, &ifunit) < 0) - fatal("ioctl(PPPIOCGUNIT): %m(%d)", errno); -/* - * Enable debug in the driver if requested. - */ - set_kdebugflag (kdebugflag); - - return master_fd; -} - -/******************************************************************** - * - * restore_loop - reattach the ppp unit to the loopback. - * - * The kernel ppp driver automatically reattaches the ppp unit to - * the loopback if the serial port is set to a line discipline other - * than ppp, or if it detects a modem hangup. The former will happen - * in disestablish_ppp if the latter hasn't already happened, so we - * shouldn't need to do anything. - * - * Just to be sure, set the real serial port to the normal discipline. - */ - -static void -restore_loop(void) -{ - looped = 1; - if (new_style_driver) { - set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_LOOP_TRAFFIC); - return; - } - if (ppp_fd != slave_fd) { - (void) ioctl(ppp_fd, TIOCSETD, &tty_disc); - set_ppp_fd(slave_fd); - } -} - -/******************************************************************** - * - * sifnpmode - Set the mode for handling packets for a given NP. - */ - -int -sifnpmode(u, proto, mode) - int u; - int proto; - enum NPmode mode; -{ - struct npioctl npi; - - npi.protocol = proto; - npi.mode = mode; - if (ioctl(ppp_dev_fd, PPPIOCSNPMODE, (caddr_t) &npi) < 0) { - if (! ok_error (errno)) - error("ioctl(PPPIOCSNPMODE, %d, %d): %m (%d)", - proto, mode, errno); - return 0; - } - return 1; -} - - -/******************************************************************** - * - * sipxfaddr - Config the interface IPX networknumber - */ - -int sipxfaddr (int unit, unsigned long int network, unsigned char * node ) -{ - int result = 1; - -#ifdef IPX_CHANGE - int skfd; - struct ifreq ifr; - struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr; - - skfd = socket (AF_IPX, SOCK_DGRAM, 0); - if (skfd < 0) { - if (! ok_error (errno)) - dbglog("socket(AF_IPX): %m (%d)", errno); - result = 0; - } - else { - memset (&ifr, '\0', sizeof (ifr)); - strlcpy (ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - - memcpy (sipx->sipx_node, node, IPX_NODE_LEN); - sipx->sipx_family = AF_IPX; - sipx->sipx_port = 0; - sipx->sipx_network = htonl (network); - sipx->sipx_type = IPX_FRAME_ETHERII; - sipx->sipx_action = IPX_CRTITF; -/* - * Set the IPX device - */ - if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { - result = 0; - if (errno != EEXIST) { - if (! ok_error (errno)) - dbglog("ioctl(SIOCSIFADDR, CRTITF): %m (%d)", errno); - } - else { - warn("ioctl(SIOCSIFADDR, CRTITF): Address already exists"); - } - } - close (skfd); - } -#endif - return result; -} - -/******************************************************************** - * - * cipxfaddr - Clear the information for the IPX network. The IPX routes - * are removed and the device is no longer able to pass IPX - * frames. - */ - -int cipxfaddr (int unit) -{ - int result = 1; - -#ifdef IPX_CHANGE - int skfd; - struct ifreq ifr; - struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr; - - skfd = socket (AF_IPX, SOCK_DGRAM, 0); - if (skfd < 0) { - if (! ok_error (errno)) - dbglog("socket(AF_IPX): %m (%d)", errno); - result = 0; - } - else { - memset (&ifr, '\0', sizeof (ifr)); - strlcpy (ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - - sipx->sipx_type = IPX_FRAME_ETHERII; - sipx->sipx_action = IPX_DLTITF; - sipx->sipx_family = AF_IPX; -/* - * Set the IPX device - */ - if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { - if (! ok_error (errno)) - info("ioctl(SIOCSIFADDR, IPX_DLTITF): %m (%d)", errno); - result = 0; - } - close (skfd); - } -#endif - return result; -} - -/* - * Use the hostname as part of the random number seed. - */ -int -get_host_seed() -{ - int h; - char *p = hostname; - - h = 407; - for (p = hostname; *p != 0; ++p) - h = h * 37 + *p; - return h; -} - -/******************************************************************** - * - * sys_check_options - check the options that the user specified - */ - -int -sys_check_options(void) -{ -#ifdef IPX_CHANGE -/* - * Disable the IPX protocol if the support is not present in the kernel. - */ - char *path; - - if (ipxcp_protent.enabled_flag) { - struct stat stat_buf; - if ((path = path_to_procfs("/net/ipx_interface")) == 0 - || lstat(path, &stat_buf) < 0) { - error("IPX support is not present in the kernel\n"); - ipxcp_protent.enabled_flag = 0; - } - } -#endif - if (demand && driver_is_old) { - option_error("demand dialling is not supported by kernel driver " - "version %d.%d.%d", driver_version, driver_modification, - driver_patch); - return 0; - } - if (multilink && !new_style_driver) { - warn("Warning: multilink is not supported by the kernel driver"); - multilink = 0; - } - return 1; -} diff --git a/mdk-stage1/ppp/pppd/sys-solaris.c b/mdk-stage1/ppp/pppd/sys-solaris.c deleted file mode 100644 index da5f9c45a..000000000 --- a/mdk-stage1/ppp/pppd/sys-solaris.c +++ /dev/null @@ -1,2737 +0,0 @@ -/* - * System-dependent procedures for pppd under Solaris 2. - * - * Parts re-written by Adi Masputra <adi.masputra@sun.com>, based on - * the original sys-svr4.c - * - * Copyright (c) 2000 by Sun Microsystems, Inc. - * All rights reserved. - * - * Permission to use, copy, modify, and distribute this software and its - * documentation is hereby granted, provided that the above copyright - * notice appears in all copies. - * - * SUN MAKES NO REPRESENTATION OR WARRANTIES ABOUT THE SUITABILITY OF - * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED - * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A - * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR - * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR - * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES - * - * Copyright (c) 1994 The Australian National University. - * All rights reserved. - * - * Permission to use, copy, modify, and distribute this software and its - * documentation is hereby granted, provided that the above copyright - * notice appears in all copies. This software is provided without any - * warranty, express or implied. The Australian National University - * makes no representations about the suitability of this software for - * any purpose. - * - * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY - * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF - * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGE. - * - * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO - * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, - * OR MODIFICATIONS. - */ - -#define RCSID "$Id$" - -#include <limits.h> -#include <stdio.h> -#include <stddef.h> -#include <stdlib.h> -#include <ctype.h> -#include <errno.h> -#include <fcntl.h> -#include <unistd.h> -#include <termios.h> -#ifndef CRTSCTS -#include <sys/termiox.h> -#endif -#include <signal.h> -#include <utmpx.h> -#include <sys/types.h> -#include <sys/ioccom.h> -#include <sys/stream.h> -#include <sys/stropts.h> -#include <sys/socket.h> -#include <sys/sockio.h> -#include <sys/sysmacros.h> -#include <sys/systeminfo.h> -#include <sys/dlpi.h> -#include <sys/stat.h> -#include <sys/mkdev.h> -#include <net/if.h> -#include <net/if_arp.h> -#include <net/route.h> -#include <net/ppp_defs.h> -#include <net/pppio.h> -#include <netinet/in.h> -#ifdef SOL2 -#include <sys/tihdr.h> -#include <sys/tiuser.h> -#include <inet/common.h> -#include <inet/mib2.h> -#include <sys/ethernet.h> -#endif - -#include "pppd.h" -#include "fsm.h" -#include "lcp.h" -#include "ipcp.h" -#include "ccp.h" - -#if !defined(PPP_DRV_NAME) -#define PPP_DRV_NAME "ppp" -#endif /* !defined(PPP_DRV_NAME) */ - -#if !defined(PPP_DEV_NAME) -#define PPP_DEV_NAME "/dev/" PPP_DRV_NAME -#endif /* !defined(PPP_DEV_NAME) */ - -#if !defined(AHDLC_MOD_NAME) -#define AHDLC_MOD_NAME "ppp_ahdl" -#endif /* !defined(AHDLC_MOD_NAME) */ - -#if !defined(COMP_MOD_NAME) -#define COMP_MOD_NAME "ppp_comp" -#endif /* !defined(COMP_MOD_NAME) */ - -#if !defined(IP_DEV_NAME) -#define IP_DEV_NAME "/dev/ip" -#endif /* !defined(IP_DEV_NAME) */ - -#if !defined(IP_MOD_NAME) -#define IP_MOD_NAME "ip" -#endif /* !defined(IP_MOD_NAME) */ - -#if !defined(UDP_DEV_NAME) && defined(SOL2) -#define UDP_DEV_NAME "/dev/udp" -#endif /* !defined(UDP_DEV_NAME) && defined(SOL2) */ - -#if !defined(UDP6_DEV_NAME) && defined(SOL2) -#define UDP6_DEV_NAME "/dev/udp6" -#endif /* !defined(UDP6_DEV_NAME) && defined(SOL2) */ - -static const char rcsid[] = RCSID; - -#if defined(SOL2) -/* - * "/dev/udp" is used as a multiplexor to PLINK the interface stream - * under. It is used in place of "/dev/ip" since STREAMS will not let - * a driver be PLINK'ed under itself, and "/dev/ip" is typically the - * driver at the bottom of the tunneling interfaces stream. - */ -static char *mux_dev_name = UDP_DEV_NAME; -#else -static char *mux_dev_name = IP_DEV_NAME; -#endif -static int pppfd; -static int fdmuxid = -1; -static int ipfd; -static int ipmuxid = -1; - -#if defined(INET6) && defined(SOL2) -static int ip6fd; /* IP file descriptor */ -static int ip6muxid = -1; /* Multiplexer file descriptor */ -static int if6_is_up = 0; /* IPv6 interface has been marked up */ - -#define _IN6_LLX_FROM_EUI64(l, s, eui64, as) do { \ - s->sin6_addr.s6_addr32[0] = htonl(as); \ - eui64_copy(eui64, s->sin6_addr.s6_addr32[2]); \ - s->sin6_family = AF_INET6; \ - l.lifr_addr.ss_family = AF_INET6; \ - l.lifr_addrlen = 10; \ - l.lifr_addr = laddr; \ - } while (0) - -#define IN6_LLADDR_FROM_EUI64(l, s, eui64) \ - _IN6_LLX_FROM_EUI64(l, s, eui64, 0xfe800000) - -#define IN6_LLTOKEN_FROM_EUI64(l, s, eui64) \ - _IN6_LLX_FROM_EUI64(l, s, eui64, 0) - -#endif /* defined(INET6) && defined(SOL2) */ - -#if defined(INET6) && defined(SOL2) -static char first_ether_name[LIFNAMSIZ]; /* Solaris 8 and above */ -#else -static char first_ether_name[IFNAMSIZ]; /* Before Solaris 8 */ -#define MAXIFS 256 /* Max # of interfaces */ -#endif /* defined(INET6) && defined(SOL2) */ - -static int restore_term; -static struct termios inittermios; -#ifndef CRTSCTS -static struct termiox inittermiox; -static int termiox_ok; -#endif -static struct winsize wsinfo; /* Initial window size info */ -static pid_t tty_sid; /* original session ID for terminal */ - -extern u_char inpacket_buf[]; /* borrowed from main.c */ - -#define MAX_POLLFDS 32 -static struct pollfd pollfds[MAX_POLLFDS]; -static int n_pollfds; - -static int link_mtu, link_mru; - -#define NMODULES 32 -static int tty_nmodules; -static char tty_modules[NMODULES][FMNAMESZ+1]; -static int tty_npushed; - -static int if_is_up; /* Interface has been marked up */ -static u_int32_t remote_addr; /* IP address of peer */ -static u_int32_t default_route_gateway; /* Gateway for default route added */ -static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */ - -/* Prototypes for procedures local to this file. */ -static int translate_speed __P((int)); -static int baud_rate_of __P((int)); -static int get_ether_addr __P((u_int32_t, struct sockaddr *)); -static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *)); -static int get_hw_addr_dlpi __P((char *, struct sockaddr *)); -static int dlpi_attach __P((int, int)); -static int dlpi_info_req __P((int)); -static int dlpi_get_reply __P((int, union DL_primitives *, int, int)); -static int strioctl __P((int, int, void *, int, int)); - -#ifdef SOL2 -/* - * sifppa - Sets interface ppa - * - * without setting the ppa, ip module will return EINVAL upon setting the - * interface UP (SIOCSxIFFLAGS). This is because ip module in 2.8 expects - * two DLPI_INFO_REQ to be sent down to the driver (below ip) before - * IFF_UP can be set. Plumbing the device causes one DLPI_INFO_REQ to - * be sent down, and the second DLPI_INFO_REQ is sent upon receiving - * IF_UNITSEL (old) or SIOCSLIFNAME (new) ioctls. Such setting of the ppa - * is required because the ppp DLPI provider advertises itself as - * a DLPI style 2 type, which requires a point of attachment to be - * specified. The only way the user can specify a point of attachment - * is via SIOCSLIFNAME or IF_UNITSEL. - * - * Such changes in the behavior of ip module was made to meet new or - * evolving standards requirements. - * - */ -static int -sifppa(fd, ppa) - int fd; - int ppa; -{ - return (int)ioctl(fd, IF_UNITSEL, (char *)&ppa); -} -#endif /* SOL2 */ - -#if defined(SOL2) && defined(INET6) -/* - * get_first_ethernet - returns the first Ethernet interface name found in - * the system, or NULL if none is found - * - * NOTE: This is the lifreq version (Solaris 8 and above) - */ -char * -get_first_ethernet() -{ - struct lifnum lifn; - struct lifconf lifc; - struct lifreq *plifreq; - struct lifreq lifr; - int fd, num_ifs, i, found; - uint_t fl, req_size; - char *req; - - fd = socket(AF_INET, SOCK_DGRAM, 0); - if (fd < 0) { - return 0; - } - - /* - * Find out how many interfaces are running - */ - lifn.lifn_family = AF_UNSPEC; - lifn.lifn_flags = LIFC_NOXMIT; - if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0) { - close(fd); - error("could not determine number of interfaces: %m"); - return 0; - } - - num_ifs = lifn.lifn_count; - req_size = num_ifs * sizeof(struct lifreq); - req = malloc(req_size); - if (req == NULL) { - close(fd); - error("out of memory"); - return 0; - } - - /* - * Get interface configuration info for all interfaces - */ - lifc.lifc_family = AF_UNSPEC; - lifc.lifc_flags = LIFC_NOXMIT; - lifc.lifc_len = req_size; - lifc.lifc_buf = req; - if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0) { - close(fd); - free(req); - error("SIOCGLIFCONF: %m"); - return 0; - } - - /* - * And traverse each interface to look specifically for the first - * occurence of an Ethernet interface which has been marked up - */ - plifreq = lifc.lifc_req; - found = 0; - for (i = lifc.lifc_len / sizeof(struct lifreq); i > 0; i--, plifreq++) { - - if (strchr(plifreq->lifr_name, ':') != NULL) - continue; - - memset(&lifr, 0, sizeof(lifr)); - strncpy(lifr.lifr_name, plifreq->lifr_name, sizeof(lifr.lifr_name)); - if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) { - close(fd); - free(req); - error("SIOCGLIFFLAGS: %m"); - return 0; - } - fl = lifr.lifr_flags; - - if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) - != (IFF_UP | IFF_BROADCAST)) - continue; - - found = 1; - break; - } - free(req); - close(fd); - - if (found) { - strncpy(first_ether_name, lifr.lifr_name, sizeof(first_ether_name)); - return (char *)first_ether_name; - } else - return NULL; -} -#else -/* - * get_first_ethernet - returns the first Ethernet interface name found in - * the system, or NULL if none is found - * - * NOTE: This is the ifreq version (before Solaris 8). - */ -char * -get_first_ethernet() -{ - struct ifconf ifc; - struct ifreq *pifreq; - struct ifreq ifr; - int fd, num_ifs, i, found; - uint_t fl, req_size; - char *req; - - fd = socket(AF_INET, SOCK_DGRAM, 0); - if (fd < 0) { - return 0; - } - - /* - * Find out how many interfaces are running - */ - if (ioctl(fd, SIOCGIFNUM, (char *)&num_ifs) < 0) { - num_ifs = MAXIFS; - } - - req_size = num_ifs * sizeof(struct ifreq); - req = malloc(req_size); - if (req == NULL) { - close(fd); - error("out of memory"); - return 0; - } - - /* - * Get interface configuration info for all interfaces - */ - ifc.ifc_len = req_size; - ifc.ifc_buf = req; - if (ioctl(fd, SIOCGIFCONF, &ifc) < 0) { - close(fd); - free(req); - error("SIOCGIFCONF: %m"); - return 0; - } - - /* - * And traverse each interface to look specifically for the first - * occurence of an Ethernet interface which has been marked up - */ - pifreq = ifc.ifc_req; - found = 0; - for (i = ifc.ifc_len / sizeof(struct ifreq); i > 0; i--, pifreq++) { - - if (strchr(pifreq->ifr_name, ':') != NULL) - continue; - - memset(&ifr, 0, sizeof(ifr)); - strncpy(ifr.ifr_name, pifreq->ifr_name, sizeof(ifr.ifr_name)); - if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) { - close(fd); - free(req); - error("SIOCGIFFLAGS: %m"); - return 0; - } - fl = ifr.ifr_flags; - - if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) - != (IFF_UP | IFF_BROADCAST)) - continue; - - found = 1; - break; - } - free(req); - close(fd); - - if (found) { - strncpy(first_ether_name, ifr.ifr_name, sizeof(first_ether_name)); - return (char *)first_ether_name; - } else - return NULL; -} -#endif /* defined(SOL2) && defined(INET6) */ - -#if defined(SOL2) -/* - * get_if_hwaddr - get the hardware address for the specified - * network interface device. - */ -int -get_if_hwaddr(u_char *addr, char *if_name) -{ - struct sockaddr s_eth_addr; - struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data; - - if (if_name == NULL) - return -1; - - /* - * Send DL_INFO_REQ to the driver to solicit its MAC address - */ - if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) { - error("could not obtain hardware address for %s", if_name); - return -1; - } - - memcpy(addr, eth_addr->ether_addr_octet, 6); - return 1; -} -#endif /* SOL2 */ - -#if defined(SOL2) && defined(INET6) -/* - * slifname - Sets interface ppa and flags - * - * in addition to the comments stated in sifppa(), IFF_IPV6 bit must - * be set in order to declare this as an IPv6 interface - */ -static int -slifname(fd, ppa) - int fd; - int ppa; -{ - struct lifreq lifr; - int ret; - - memset(&lifr, 0, sizeof(lifr)); - ret = ioctl(fd, SIOCGLIFFLAGS, &lifr); - if (ret < 0) - goto slifname_done; - - lifr.lifr_flags |= IFF_IPV6; - lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4); - lifr.lifr_ppa = ppa; - strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); - - ret = ioctl(fd, SIOCSLIFNAME, &lifr); - -slifname_done: - return ret; - - -} - - -/* - * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI - * - * walks the list of valid ethernet interfaces, and convert the first - * found 48-bit MAC address into EUI 64. caller also assumes that - * the system has a properly configured Ethernet interface for this - * function to return non-zero. - */ -int -ether_to_eui64(eui64_t *p_eui64) -{ - struct sockaddr s_eth_addr; - struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data; - char *if_name; - - if ((if_name = get_first_ethernet()) == NULL) { - error("no persistent id can be found"); - return 0; - } - - /* - * Send DL_INFO_REQ to the driver to solicit its MAC address - */ - if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) { - error("could not obtain hardware address for %s", if_name); - return 0; - } - - /* - * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1] - */ - p_eui64->e8[0] = (eth_addr->ether_addr_octet[0] & 0xFF) | 0x02; - p_eui64->e8[1] = (eth_addr->ether_addr_octet[1] & 0xFF); - p_eui64->e8[2] = (eth_addr->ether_addr_octet[2] & 0xFF); - p_eui64->e8[3] = 0xFF; - p_eui64->e8[4] = 0xFE; - p_eui64->e8[5] = (eth_addr->ether_addr_octet[3] & 0xFF); - p_eui64->e8[6] = (eth_addr->ether_addr_octet[4] & 0xFF); - p_eui64->e8[7] = (eth_addr->ether_addr_octet[5] & 0xFF); - - return 1; -} -#endif /* defined(SOL2) && defined(INET6) */ - -/* - * sys_init - System-dependent initialization. - */ -void -sys_init() -{ - int ifd, x; - struct ifreq ifr; -#if defined(INET6) && defined(SOL2) - int i6fd; - struct lifreq lifr; -#endif /* defined(INET6) && defined(SOL2) */ -#if !defined(SOL2) - struct { - union DL_primitives prim; - char space[64]; - } reply; -#endif /* !defined(SOL2) */ - - ipfd = open(mux_dev_name, O_RDWR, 0); - if (ipfd < 0) - fatal("Couldn't open IP device: %m"); - -#if defined(INET6) && defined(SOL2) - ip6fd = open(UDP6_DEV_NAME, O_RDWR, 0); - if (ip6fd < 0) - fatal("Couldn't open IP device (2): %m"); -#endif /* defined(INET6) && defined(SOL2) */ - - if (default_device && !notty) - tty_sid = getsid((pid_t)0); - - pppfd = open(PPP_DEV_NAME, O_RDWR | O_NONBLOCK, 0); - if (pppfd < 0) - fatal("Can't open %s: %m", PPP_DEV_NAME); - if (kdebugflag & 1) { - x = PPPDBG_LOG + PPPDBG_DRIVER; - strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0); - } - - /* Assign a new PPA and get its unit number. */ - if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) - fatal("Can't create new PPP interface: %m"); - -#if defined(SOL2) - /* - * Since sys_init() is called prior to ifname being set in main(), - * we need to get the ifname now, otherwise slifname(), and others, - * will fail, or maybe, I should move them to a later point ? - * <adi.masputra@sun.com> - */ - sprintf(ifname, PPP_DRV_NAME "%d", ifunit); -#endif /* defined(SOL2) */ - /* - * Open the ppp device again and link it under the ip multiplexor. - * IP will assign a unit number which hopefully is the same as ifunit. - * I don't know any way to be certain they will be the same. :-( - */ - ifd = open(PPP_DEV_NAME, O_RDWR, 0); - if (ifd < 0) - fatal("Can't open %s (2): %m", PPP_DEV_NAME); - if (kdebugflag & 1) { - x = PPPDBG_LOG + PPPDBG_DRIVER; - strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0); - } - -#if defined(INET6) && defined(SOL2) - i6fd = open(PPP_DEV_NAME, O_RDWR, 0); - if (i6fd < 0) { - close(ifd); - fatal("Can't open %s (3): %m", PPP_DEV_NAME); - } - if (kdebugflag & 1) { - x = PPPDBG_LOG + PPPDBG_DRIVER; - strioctl(i6fd, PPPIO_DEBUG, &x, sizeof(int), 0); - } -#endif /* defined(INET6) && defined(SOL2) */ - -#if defined(SOL2) - if (ioctl(ifd, I_PUSH, IP_MOD_NAME) < 0) { - close(ifd); -#if defined(INET6) - close(i6fd); -#endif /* defined(INET6) */ - fatal("Can't push IP module: %m"); - } - - /* - * Assign ppa according to the unit number returned by ppp device - * after plumbing is completed above. - */ - if (sifppa(ifd, ifunit) < 0) { - close (ifd); -#if defined(INET6) - close(i6fd); -#endif /* defined(INET6) */ - fatal("Can't set ppa for unit %d: %m", ifunit); - } - -#if defined(INET6) - /* - * An IPv6 interface is created anyway, even when the user does not - * explicitly enable it. Note that the interface will be marked - * IPv6 during slifname(). - */ - if (ioctl(i6fd, I_PUSH, IP_MOD_NAME) < 0) { - close(ifd); - close(i6fd); - fatal("Can't push IP module (2): %m"); - } - - /* - * Assign ppa according to the unit number returned by ppp device - * after plumbing is completed above. In addition, mark the interface - * as an IPv6 interface. - */ - if (slifname(i6fd, ifunit) < 0) { - close(ifd); - close(i6fd); - fatal("Can't set ifname for unit %d: %m", ifunit); - } -#endif /* defined(INET6) */ - - ipmuxid = ioctl(ipfd, I_PLINK, ifd); - close(ifd); - if (ipmuxid < 0) { -#if defined(INET6) - close(i6fd); -#endif /* defined(INET6) */ - fatal("Can't I_PLINK PPP device to IP: %m"); - } - - memset(&ifr, 0, sizeof(ifr)); - sprintf(ifr.ifr_name, "%s", ifname); - ifr.ifr_ip_muxid = ipmuxid; - - /* - * In Sol 8 and later, STREAMS dynamic module plumbing feature exists. - * This is so that an arbitrary module can be inserted, or deleted, - * between ip module and the device driver without tearing down the - * existing stream. Such feature requires the mux ids, which is set - * by SIOCSIFMUXID (or SIOCLSIFMUXID). - */ - if (ioctl(ipfd, SIOCSIFMUXID, &ifr) < 0) { - ioctl(ipfd, I_PUNLINK, ipmuxid); -#if defined(INET6) - close(i6fd); -#endif /* defined(INET6) */ - fatal("SIOCSIFMUXID: %m"); - } - -#else /* else if !defined(SOL2) */ - - if (dlpi_attach(ifd, ifunit) < 0 || - dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) { - close(ifd); - fatal("Can't attach to ppp%d: %m", ifunit); - } - - ipmuxid = ioctl(ipfd, I_LINK, ifd); - close(ifd); - if (ipmuxid < 0) - fatal("Can't link PPP device to IP: %m"); -#endif /* defined(SOL2) */ - -#if defined(INET6) && defined(SOL2) - ip6muxid = ioctl(ip6fd, I_PLINK, i6fd); - close(i6fd); - if (ip6muxid < 0) { - ioctl(ipfd, I_PUNLINK, ipmuxid); - fatal("Can't I_PLINK PPP device to IP (2): %m"); - } - - memset(&lifr, 0, sizeof(lifr)); - sprintf(lifr.lifr_name, "%s", ifname); - lifr.lifr_ip_muxid = ip6muxid; - - /* - * Let IP know of the mux id [see comment for SIOCSIFMUXID above] - */ - if (ioctl(ip6fd, SIOCSLIFMUXID, &lifr) < 0) { - ioctl(ipfd, I_PUNLINK, ipmuxid); - ioctl(ip6fd, I_PUNLINK, ip6muxid); - fatal("Can't link PPP device to IP (2): %m"); - } -#endif /* defined(INET6) && defined(SOL2) */ - -#if !defined(SOL2) - /* Set the interface name for the link. */ - slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), PPP_DRV_NAME "%d", ifunit); - ifr.ifr_metric = ipmuxid; - if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0) - fatal("Can't set interface name %s: %m", ifr.ifr_name); -#endif /* !defined(SOL2) */ - - n_pollfds = 0; -} - -/* - * sys_cleanup - restore any system state we modified before exiting: - * mark the interface down, delete default route and/or proxy arp entry. - * This should call die() because it's called from die(). - */ -void -sys_cleanup() -{ -#if defined(SOL2) - struct ifreq ifr; -#if defined(INET6) - struct lifreq lifr; -#endif /* defined(INET6) */ -#endif /* defined(SOL2) */ - -#if defined(SOL2) && defined(INET6) - if (if6_is_up) - sif6down(0); -#endif /* defined(SOL2) && defined(INET6) */ - if (if_is_up) - sifdown(0); - if (default_route_gateway) - cifdefaultroute(0, default_route_gateway, default_route_gateway); - if (proxy_arp_addr) - cifproxyarp(0, proxy_arp_addr); -#if defined(SOL2) - /* - * Make sure we ask ip what the muxid, because 'ifconfig modlist' will - * unlink and re-link the modules, causing the muxid to change. - */ - memset(&ifr, 0, sizeof(ifr)); - sprintf(ifr.ifr_name, "%s", ifname); - if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) { - error("SIOCGIFFLAGS: %m"); - return; - } - - if (ioctl(ipfd, SIOCGIFMUXID, &ifr) < 0) { - error("SIOCGIFMUXID: %m"); - return; - } - - ipmuxid = ifr.ifr_ip_muxid; - - if (ioctl(ipfd, I_PUNLINK, ipmuxid) < 0) { - error("Can't I_PUNLINK PPP from IP: %m"); - return; - } -#if defined(INET6) - /* - * Make sure we ask ip what the muxid, because 'ifconfig modlist' will - * unlink and re-link the modules, causing the muxid to change. - */ - memset(&lifr, 0, sizeof(lifr)); - sprintf(lifr.lifr_name, "%s", ifname); - if (ioctl(ip6fd, SIOCGLIFFLAGS, &lifr) < 0) { - error("SIOCGLIFFLAGS: %m"); - return; - } - - if (ioctl(ip6fd, SIOCGLIFMUXID, &lifr) < 0) { - error("SIOCGLIFMUXID: %m"); - return; - } - - ip6muxid = lifr.lifr_ip_muxid; - - if (ioctl(ip6fd, I_PUNLINK, ip6muxid) < 0) { - error("Can't I_PUNLINK PPP from IP (2): %m"); - } -#endif /* defined(INET6) */ -#endif /* defined(SOL2) */ -} - -/* - * sys_close - Clean up in a child process before execing. - */ -void -sys_close() -{ - close(ipfd); -#if defined(INET6) && defined(SOL2) - close(ip6fd); -#endif /* defined(INET6) && defined(SOL2) */ - if (pppfd >= 0) - close(pppfd); -} - -/* - * sys_check_options - check the options that the user specified - */ -int -sys_check_options() -{ - return 1; -} - -#if 0 -/* - * daemon - Detach us from controlling terminal session. - */ -int -daemon(nochdir, noclose) - int nochdir, noclose; -{ - int pid; - - if ((pid = fork()) < 0) - return -1; - if (pid != 0) - exit(0); /* parent dies */ - setsid(); - if (!nochdir) - chdir("/"); - if (!noclose) { - fclose(stdin); /* don't need stdin, stdout, stderr */ - fclose(stdout); - fclose(stderr); - } - return 0; -} -#endif - -/* - * ppp_available - check whether the system has any ppp interfaces - */ -int -ppp_available() -{ - struct stat buf; - - return stat(PPP_DEV_NAME, &buf) >= 0; -} - -/* - * any_compressions - see if compression is enabled or not - * - * In the STREAMS implementation of kernel-portion pppd, - * the comp STREAMS module performs the ACFC, PFC, as well - * CCP and VJ compressions. However, if the user has explicitly - * declare to not enable them from the command line, there is - * no point of having the comp module be pushed on the stream. - */ -static int -any_compressions() -{ - if ((!lcp_wantoptions[0].neg_accompression) && - (!lcp_wantoptions[0].neg_pcompression) && - (!ccp_protent.enabled_flag) && - (!ipcp_wantoptions[0].neg_vj)) { - return 0; - } - return 1; -} - -/* - * tty_establish_ppp - Turn the serial port into a ppp interface. - */ -int -tty_establish_ppp(fd) - int fd; -{ - int i; - - /* Pop any existing modules off the tty stream. */ - for (i = 0;; ++i) - if (ioctl(fd, I_LOOK, tty_modules[i]) < 0 - || strcmp(tty_modules[i], "ptem") == 0 - || ioctl(fd, I_POP, 0) < 0) - break; - tty_nmodules = i; - - /* Push the async hdlc module and the compressor module. */ - tty_npushed = 0; - - if(!sync_serial) { - if (ioctl(fd, I_PUSH, AHDLC_MOD_NAME) < 0) { - error("Couldn't push PPP Async HDLC module: %m"); - return -1; - } - ++tty_npushed; - } - if (kdebugflag & 4) { - i = PPPDBG_LOG + PPPDBG_AHDLC; - strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0); - } - /* - * There's no need to push comp module if we don't intend - * to compress anything - */ - if (any_compressions()) { - if (ioctl(fd, I_PUSH, COMP_MOD_NAME) < 0) - error("Couldn't push PPP compression module: %m"); - else - ++tty_npushed; - } - - if (kdebugflag & 2) { - i = PPPDBG_LOG; - if (any_compressions()) - i += PPPDBG_COMP; - strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0); - } - - /* Link the serial port under the PPP multiplexor. */ - if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) { - error("Can't link tty to PPP mux: %m"); - return -1; - } - - return pppfd; -} - -/* - * tty_disestablish_ppp - Restore the serial port to normal operation. - * It attempts to reconstruct the stream with the previously popped - * modules. This shouldn't call die() because it's called from die(). - */ -void -tty_disestablish_ppp(fd) - int fd; -{ - int i; - - if (fdmuxid >= 0) { - if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) { - if (!hungup) - error("Can't unlink tty from PPP mux: %m"); - } - fdmuxid = -1; - - if (!hungup) { - while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0) - --tty_npushed; - for (i = tty_nmodules - 1; i >= 0; --i) - if (ioctl(fd, I_PUSH, tty_modules[i]) < 0) - error("Couldn't restore tty module %s: %m", - tty_modules[i]); - } - if (hungup && default_device && tty_sid > 0) { - /* - * If we have received a hangup, we need to send a SIGHUP - * to the terminal's controlling process. The reason is - * that the original stream head for the terminal hasn't - * seen the M_HANGUP message (it went up through the ppp - * driver to the stream head for our fd to /dev/ppp). - */ - kill(tty_sid, SIGHUP); - } - } -} - -/* - * Check whether the link seems not to be 8-bit clean. - */ -void -clean_check() -{ - int x; - char *s; - - if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0) - return; - s = NULL; - switch (~x) { - case RCV_B7_0: - s = "bit 7 set to 1"; - break; - case RCV_B7_1: - s = "bit 7 set to 0"; - break; - case RCV_EVNP: - s = "odd parity"; - break; - case RCV_ODDP: - s = "even parity"; - break; - } - if (s != NULL) { - warn("Serial link is not 8-bit clean:"); - warn("All received characters had %s", s); - } -} - -/* - * List of valid speeds. - */ -struct speed { - int speed_int, speed_val; -} speeds[] = { -#ifdef B50 - { 50, B50 }, -#endif -#ifdef B75 - { 75, B75 }, -#endif -#ifdef B110 - { 110, B110 }, -#endif -#ifdef B134 - { 134, B134 }, -#endif -#ifdef B150 - { 150, B150 }, -#endif -#ifdef B200 - { 200, B200 }, -#endif -#ifdef B300 - { 300, B300 }, -#endif -#ifdef B600 - { 600, B600 }, -#endif -#ifdef B1200 - { 1200, B1200 }, -#endif -#ifdef B1800 - { 1800, B1800 }, -#endif -#ifdef B2000 - { 2000, B2000 }, -#endif -#ifdef B2400 - { 2400, B2400 }, -#endif -#ifdef B3600 - { 3600, B3600 }, -#endif -#ifdef B4800 - { 4800, B4800 }, -#endif -#ifdef B7200 - { 7200, B7200 }, -#endif -#ifdef B9600 - { 9600, B9600 }, -#endif -#ifdef B19200 - { 19200, B19200 }, -#endif -#ifdef B38400 - { 38400, B38400 }, -#endif -#ifdef EXTA - { 19200, EXTA }, -#endif -#ifdef EXTB - { 38400, EXTB }, -#endif -#ifdef B57600 - { 57600, B57600 }, -#endif -#ifdef B76800 - { 76800, B76800 }, -#endif -#ifdef B115200 - { 115200, B115200 }, -#endif -#ifdef B153600 - { 153600, B153600 }, -#endif -#ifdef B230400 - { 230400, B230400 }, -#endif -#ifdef B307200 - { 307200, B307200 }, -#endif -#ifdef B460800 - { 460800, B460800 }, -#endif - { 0, 0 } -}; - -/* - * Translate from bits/second to a speed_t. - */ -static int -translate_speed(bps) - int bps; -{ - struct speed *speedp; - - if (bps == 0) - return 0; - for (speedp = speeds; speedp->speed_int; speedp++) - if (bps == speedp->speed_int) - return speedp->speed_val; - warn("speed %d not supported", bps); - return 0; -} - -/* - * Translate from a speed_t to bits/second. - */ -static int -baud_rate_of(speed) - int speed; -{ - struct speed *speedp; - - if (speed == 0) - return 0; - for (speedp = speeds; speedp->speed_int; speedp++) - if (speed == speedp->speed_val) - return speedp->speed_int; - return 0; -} - -/* - * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity, - * at the requested speed, etc. If `local' is true, set CLOCAL - * regardless of whether the modem option was specified. - */ -void -set_up_tty(fd, local) - int fd, local; -{ - int speed; - struct termios tios; -#if !defined (CRTSCTS) - struct termiox tiox; -#endif - - if (!sync_serial && tcgetattr(fd, &tios) < 0) - fatal("tcgetattr: %m"); - -#ifndef CRTSCTS - termiox_ok = 1; - if (!sync_serial && ioctl (fd, TCGETX, &tiox) < 0) { - termiox_ok = 0; - if (errno != ENOTTY) - error("TCGETX: %m"); - } -#endif - - if (!restore_term) { - inittermios = tios; -#ifndef CRTSCTS - inittermiox = tiox; -#endif - if (!sync_serial) - ioctl(fd, TIOCGWINSZ, &wsinfo); - } - - tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); -#ifdef CRTSCTS - if (crtscts > 0) - tios.c_cflag |= CRTSCTS; - else if (crtscts < 0) - tios.c_cflag &= ~CRTSCTS; -#else - if (crtscts != 0 && !termiox_ok) { - error("Can't set RTS/CTS flow control"); - } else if (crtscts > 0) { - tiox.x_hflag |= RTSXOFF|CTSXON; - } else if (crtscts < 0) { - tiox.x_hflag &= ~(RTSXOFF|CTSXON); - } -#endif - - tios.c_cflag |= CS8 | CREAD | HUPCL; - if (local || !modem) - tios.c_cflag |= CLOCAL; - tios.c_iflag = IGNBRK | IGNPAR; - tios.c_oflag = 0; - tios.c_lflag = 0; - tios.c_cc[VMIN] = 1; - tios.c_cc[VTIME] = 0; - - if (crtscts == -2) { - tios.c_iflag |= IXON | IXOFF; - tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */ - tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */ - } - - speed = translate_speed(inspeed); - if (speed) { - cfsetospeed(&tios, speed); - cfsetispeed(&tios, speed); - } else { - speed = cfgetospeed(&tios); - /* - * We can't proceed if the serial port speed is 0, - * since that implies that the serial port is disabled. - */ - if ((speed == B0) && !sync_serial) - fatal("Baud rate for %s is 0; need explicit baud rate", devnam); - } - - if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0) - fatal("tcsetattr: %m"); - -#ifndef CRTSCTS - if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){ - error("TCSETXF: %m"); - } -#endif - - baud_rate = inspeed = baud_rate_of(speed); - if (!sync_serial) - restore_term = 1; -} - -/* - * restore_tty - restore the terminal to the saved settings. - */ -void -restore_tty(fd) - int fd; -{ - if (restore_term) { - if (!default_device) { - /* - * Turn off echoing, because otherwise we can get into - * a loop with the tty and the modem echoing to each other. - * We presume we are the sole user of this tty device, so - * when we close it, it will revert to its defaults anyway. - */ - inittermios.c_lflag &= ~(ECHO | ECHONL); - } - if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0) - if (!hungup && errno != ENXIO) - warn("tcsetattr: %m"); -#ifndef CRTSCTS - if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){ - if (!hungup && errno != ENXIO) - error("TCSETXF: %m"); - } -#endif - if (!sync_serial) - ioctl(fd, TIOCSWINSZ, &wsinfo); - restore_term = 0; - } -} - -/* - * setdtr - control the DTR line on the serial port. - * This is called from die(), so it shouldn't call die(). - */ -void -setdtr(fd, on) -int fd, on; -{ - int modembits = TIOCM_DTR; - - ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); -} - -/* - * open_loopback - open the device we use for getting packets - * in demand mode. Under Solaris 2, we use our existing fd - * to the ppp driver. - */ -int -open_ppp_loopback() -{ - return pppfd; -} - -/* - * output - Output PPP packet. - */ -void -output(unit, p, len) - int unit; - u_char *p; - int len; -{ - struct strbuf data; - int retries; - struct pollfd pfd; - - if (debug) - dbglog("sent %P", p, len); - - data.len = len; - data.buf = (caddr_t) p; - retries = 4; - while (putmsg(pppfd, NULL, &data, 0) < 0) { - if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) { - if (errno != ENXIO) - error("Couldn't send packet: %m"); - break; - } - pfd.fd = pppfd; - pfd.events = POLLOUT; - poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */ - } -} - - -/* - * wait_input - wait until there is data available, - * for the length of time specified by *timo (indefinite - * if timo is NULL). - */ -void -wait_input(timo) - struct timeval *timo; -{ - int t; - - t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000; - if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR) - fatal("poll: %m"); -} - -/* - * add_fd - add an fd to the set that wait_input waits for. - */ -void add_fd(fd) - int fd; -{ - int n; - - for (n = 0; n < n_pollfds; ++n) - if (pollfds[n].fd == fd) - return; - if (n_pollfds < MAX_POLLFDS) { - pollfds[n_pollfds].fd = fd; - pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP; - ++n_pollfds; - } else - error("Too many inputs!"); -} - -/* - * remove_fd - remove an fd from the set that wait_input waits for. - */ -void remove_fd(fd) - int fd; -{ - int n; - - for (n = 0; n < n_pollfds; ++n) { - if (pollfds[n].fd == fd) { - while (++n < n_pollfds) - pollfds[n-1] = pollfds[n]; - --n_pollfds; - break; - } - } -} - -#if 0 -/* - * wait_loop_output - wait until there is data available on the - * loopback, for the length of time specified by *timo (indefinite - * if timo is NULL). - */ -void -wait_loop_output(timo) - struct timeval *timo; -{ - wait_input(timo); -} - -/* - * wait_time - wait for a given length of time or until a - * signal is received. - */ -void -wait_time(timo) - struct timeval *timo; -{ - int n; - - n = select(0, NULL, NULL, NULL, timo); - if (n < 0 && errno != EINTR) - fatal("select: %m"); -} -#endif - - -/* - * read_packet - get a PPP packet from the serial device. - */ -int -read_packet(buf) - u_char *buf; -{ - struct strbuf ctrl, data; - int flags, len; - unsigned char ctrlbuf[sizeof(union DL_primitives) + 64]; - - for (;;) { - data.maxlen = PPP_MRU + PPP_HDRLEN; - data.buf = (caddr_t) buf; - ctrl.maxlen = sizeof(ctrlbuf); - ctrl.buf = (caddr_t) ctrlbuf; - flags = 0; - len = getmsg(pppfd, &ctrl, &data, &flags); - if (len < 0) { - if (errno == EAGAIN || errno == EINTR) - return -1; - fatal("Error reading packet: %m"); - } - - if (ctrl.len <= 0) - return data.len; - - /* - * Got a M_PROTO or M_PCPROTO message. Interpret it - * as a DLPI primitive?? - */ - if (debug) - dbglog("got dlpi prim 0x%x, len=%d", - ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len); - - } -} - -/* - * get_loop_output - get outgoing packets from the ppp device, - * and detect when we want to bring the real link up. - * Return value is 1 if we need to bring up the link, 0 otherwise. - */ -int -get_loop_output() -{ - int len; - int rv = 0; - - while ((len = read_packet(inpacket_buf)) > 0) { - if (loop_frame(inpacket_buf, len)) - rv = 1; - } - return rv; -} - -/* - * netif_set_mtu - set the MTU on the PPP network interface. - */ -void -netif_set_mtu(unit, mtu) - int unit, mtu; -{ - struct ifreq ifr; -#if defined(INET6) && defined(SOL2) - struct lifreq lifr; - int fd; -#endif /* defined(INET6) && defined(SOL2) */ - - memset(&ifr, 0, sizeof(ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - ifr.ifr_metric = link_mtu; - if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) { - error("Couldn't set IP MTU (%s): %m", ifr.ifr_name); - } - -#if defined(INET6) && defined(SOL2) - fd = socket(AF_INET6, SOCK_DGRAM, 0); - if (fd < 0) - error("Couldn't open IPv6 socket: %m"); - - memset(&lifr, 0, sizeof(lifr)); - strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); - lifr.lifr_mtu = link_mtu; - if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) { - close(fd); - error("Couldn't set IPv6 MTU (%s): %m", ifr.ifr_name); - } - close(fd); -#endif /* defined(INET6) && defined(SOL2) */ -} - -/* - * tty_send_config - configure the transmit characteristics of - * the ppp interface. - */ -void -tty_send_config(mtu, asyncmap, pcomp, accomp) - int mtu; - u_int32_t asyncmap; - int pcomp, accomp; -{ - int cf[2]; - - link_mtu = mtu; - if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) { - if (hungup && errno == ENXIO) - return; - error("Couldn't set MTU: %m"); - } - if (fdmuxid >= 0) { - if (!sync_serial) { - if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { - error("Couldn't set transmit ACCM: %m"); - } - } - cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0); - cf[1] = COMP_PROT | COMP_AC; - if (any_compressions() && - strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - error("Couldn't set prot/AC compression: %m"); - } - } -} - -/* - * ppp_set_xaccm - set the extended transmit ACCM for the interface. - */ -void -tty_set_xaccm(accm) - ext_accm accm; -{ - if (sync_serial) - return; - - if (fdmuxid >= 0 - && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) { - if (!hungup || errno != ENXIO) - warn("Couldn't set extended ACCM: %m"); - } -} - -/* - * ppp_recv_config - configure the receive-side characteristics of - * the ppp interface. - */ -void -tty_recv_config(mru, asyncmap, pcomp, accomp) - int mru; - u_int32_t asyncmap; - int pcomp, accomp; -{ - int cf[2]; - - link_mru = mru; - if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) { - if (hungup && errno == ENXIO) - return; - error("Couldn't set MRU: %m"); - } - if (fdmuxid >= 0) { - if (!sync_serial) { - if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { - error("Couldn't set receive ACCM: %m"); - } - } - cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0); - cf[1] = DECOMP_PROT | DECOMP_AC; - if (any_compressions() && - strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - error("Couldn't set prot/AC decompression: %m"); - } - } -} - -/* - * ccp_test - ask kernel whether a given compression method - * is acceptable for use. - */ -int -ccp_test(unit, opt_ptr, opt_len, for_transmit) - int unit, opt_len, for_transmit; - u_char *opt_ptr; -{ - if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP), - opt_ptr, opt_len, 0) >= 0) - return 1; - return (errno == ENOSR)? 0: -1; -} - -/* - * ccp_flags_set - inform kernel about the current state of CCP. - */ -void -ccp_flags_set(unit, isopen, isup) - int unit, isopen, isup; -{ - int cf[2]; - - cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0); - cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - if (!hungup || errno != ENXIO) - error("Couldn't set kernel CCP state: %m"); - } -} - -/* - * get_idle_time - return how long the link has been idle. - */ -int -get_idle_time(u, ip) - int u; - struct ppp_idle *ip; -{ - return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0; -} - -/* - * get_ppp_stats - return statistics for the link. - */ -int -get_ppp_stats(u, stats) - int u; - struct pppd_stats *stats; -{ - struct ppp_stats s; - - if (!sync_serial && - strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) { - error("Couldn't get link statistics: %m"); - return 0; - } - stats->bytes_in = s.p.ppp_ibytes; - stats->bytes_out = s.p.ppp_obytes; - return 1; -} - -#if 0 -/* - * set_filters - transfer the pass and active filters to the kernel. - */ -int -set_filters(pass, active) - struct bpf_program *pass, *active; -{ - int ret = 1; - - if (pass->bf_len > 0) { - if (strioctl(pppfd, PPPIO_PASSFILT, pass, - sizeof(struct bpf_program), 0) < 0) { - error("Couldn't set pass-filter in kernel: %m"); - ret = 0; - } - } - if (active->bf_len > 0) { - if (strioctl(pppfd, PPPIO_ACTIVEFILT, active, - sizeof(struct bpf_program), 0) < 0) { - error("Couldn't set active-filter in kernel: %m"); - ret = 0; - } - } - return ret; -} -#endif - -/* - * ccp_fatal_error - returns 1 if decompression was disabled as a - * result of an error detected after decompression of a packet, - * 0 otherwise. This is necessary because of patent nonsense. - */ -int -ccp_fatal_error(unit) - int unit; -{ - int cf[2]; - - cf[0] = cf[1] = 0; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - if (errno != ENXIO && errno != EINVAL) - error("Couldn't get compression flags: %m"); - return 0; - } - return cf[0] & CCP_FATALERROR; -} - -/* - * sifvjcomp - config tcp header compression - */ -int -sifvjcomp(u, vjcomp, xcidcomp, xmaxcid) - int u, vjcomp, xcidcomp, xmaxcid; -{ - int cf[2]; - char maxcid[2]; - - if (vjcomp) { - maxcid[0] = xcidcomp; - maxcid[1] = 15; /* XXX should be rmaxcid */ - if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) { - error("Couldn't initialize VJ compression: %m"); - } - } - - cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */ - + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0); - cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - if (vjcomp) - error("Couldn't enable VJ compression: %m"); - } - - return 1; -} - -/* - * sifup - Config the interface up and enable IP packets to pass. - */ -int -sifup(u) - int u; -{ - struct ifreq ifr; - - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface up (get): %m"); - return 0; - } - ifr.ifr_flags |= IFF_UP; - if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface up (set): %m"); - return 0; - } - if_is_up = 1; - return 1; -} - -/* - * sifdown - Config the interface down and disable IP. - */ -int -sifdown(u) - int u; -{ - struct ifreq ifr; - - if (ipmuxid < 0) - return 1; - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface down (get): %m"); - return 0; - } - ifr.ifr_flags &= ~IFF_UP; - if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface down (set): %m"); - return 0; - } - if_is_up = 0; - return 1; -} - -/* - * sifnpmode - Set the mode for handling packets for a given NP. - */ -int -sifnpmode(u, proto, mode) - int u; - int proto; - enum NPmode mode; -{ - int npi[2]; - - npi[0] = proto; - npi[1] = (int) mode; - if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) { - error("ioctl(set NP %d mode to %d): %m", proto, mode); - return 0; - } - return 1; -} - -#if defined(SOL2) && defined(INET6) -/* - * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass. - */ -int -sif6up(u) - int u; -{ - struct lifreq lifr; - int fd; - - fd = socket(AF_INET6, SOCK_DGRAM, 0); - if (fd < 0) { - return 0; - } - - memset(&lifr, 0, sizeof(lifr)); - strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); - if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) { - close(fd); - return 0; - } - - lifr.lifr_flags |= IFF_UP; - strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); - if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) { - close(fd); - return 0; - } - - if6_is_up = 1; - close(fd); - return 1; -} - -/* - * sifdown - Config the IPv6 interface down and disable IPv6. - */ -int -sif6down(u) - int u; -{ - struct lifreq lifr; - int fd; - - fd = socket(AF_INET6, SOCK_DGRAM, 0); - if (fd < 0) - return 0; - - memset(&lifr, 0, sizeof(lifr)); - strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); - if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) { - close(fd); - return 0; - } - - lifr.lifr_flags &= ~IFF_UP; - strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); - if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) { - close(fd); - return 0; - } - - if6_is_up = 0; - close(fd); - return 1; -} - -/* - * sif6addr - Config the interface with an IPv6 link-local address - */ -int -sif6addr(u, o, h) - int u; - eui64_t o, h; -{ - struct lifreq lifr; - struct sockaddr_storage laddr; - struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr; - int fd; - - fd = socket(AF_INET6, SOCK_DGRAM, 0); - if (fd < 0) - return 0; - - memset(&lifr, 0, sizeof(lifr)); - strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); - - /* - * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with - * zero values, hence the interface token came to be zero too, - * and without this, in.ndpd will complain - */ - IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o); - if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) { - close(fd); - return 0; - } - - /* - * Set the interface address and destination address - */ - IN6_LLADDR_FROM_EUI64(lifr, sin6, o); - if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) { - close(fd); - return 0; - } - - memset(&lifr, 0, sizeof(lifr)); - strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); - IN6_LLADDR_FROM_EUI64(lifr, sin6, h); - if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) { - close(fd); - return 0; - } - - return 1; -} - -/* - * cif6addr - Remove the IPv6 address from interface - */ -int -cif6addr(u, o, h) - int u; - eui64_t o, h; -{ - return 1; -} - -#endif /* defined(SOL2) && defined(INET6) */ - - -#define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr) - -/* - * sifaddr - Config the interface IP addresses and netmask. - */ -int -sifaddr(u, o, h, m) - int u; - u_int32_t o, h, m; -{ - struct ifreq ifr; - int ret = 1; - - memset(&ifr, 0, sizeof(ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - ifr.ifr_addr.sa_family = AF_INET; - INET_ADDR(ifr.ifr_addr) = m; - if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) { - error("Couldn't set IP netmask: %m"); - ret = 0; - } - ifr.ifr_addr.sa_family = AF_INET; - INET_ADDR(ifr.ifr_addr) = o; - if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) { - error("Couldn't set local IP address: %m"); - ret = 0; - } - - /* - * On some systems, we have to explicitly set the point-to-point - * flag bit before we can set a destination address. - */ - if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0 - && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) { - ifr.ifr_flags |= IFF_POINTOPOINT; - if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface pt-to-pt: %m"); - ret = 0; - } - } - ifr.ifr_dstaddr.sa_family = AF_INET; - INET_ADDR(ifr.ifr_dstaddr) = h; - if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) { - error("Couldn't set remote IP address: %m"); - ret = 0; - } -#if 0 /* now done in ppp_send_config */ - ifr.ifr_metric = link_mtu; - if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) { - error("Couldn't set IP MTU: %m"); - } -#endif - - remote_addr = h; - return ret; -} - -/* - * cifaddr - Clear the interface IP addresses, and delete routes - * through the interface if possible. - */ -int -cifaddr(u, o, h) - int u; - u_int32_t o, h; -{ -#if defined(__USLC__) /* was: #if 0 */ - cifroute(unit, ouraddr, hisaddr); - if (ipmuxid >= 0) { - notice("Removing ppp interface unit"); - if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) { - error("Can't remove ppp interface unit: %m"); - return 0; - } - ipmuxid = -1; - } -#endif - remote_addr = 0; - return 1; -} - -/* - * sifdefaultroute - assign a default route through the address given. - */ -int -sifdefaultroute(u, l, g) - int u; - u_int32_t l, g; -{ - struct rtentry rt; - -#if defined(__USLC__) - g = l; /* use the local address as gateway */ -#endif - memset(&rt, 0, sizeof(rt)); - rt.rt_dst.sa_family = AF_INET; - INET_ADDR(rt.rt_dst) = 0; - rt.rt_gateway.sa_family = AF_INET; - INET_ADDR(rt.rt_gateway) = g; - rt.rt_flags = RTF_GATEWAY; - - if (ioctl(ipfd, SIOCADDRT, &rt) < 0) { - error("Can't add default route: %m"); - return 0; - } - - default_route_gateway = g; - return 1; -} - -/* - * cifdefaultroute - delete a default route through the address given. - */ -int -cifdefaultroute(u, l, g) - int u; - u_int32_t l, g; -{ - struct rtentry rt; - -#if defined(__USLC__) - g = l; /* use the local address as gateway */ -#endif - memset(&rt, 0, sizeof(rt)); - rt.rt_dst.sa_family = AF_INET; - INET_ADDR(rt.rt_dst) = 0; - rt.rt_gateway.sa_family = AF_INET; - INET_ADDR(rt.rt_gateway) = g; - rt.rt_flags = RTF_GATEWAY; - - if (ioctl(ipfd, SIOCDELRT, &rt) < 0) { - error("Can't delete default route: %m"); - return 0; - } - - default_route_gateway = 0; - return 1; -} - -/* - * sifproxyarp - Make a proxy ARP entry for the peer. - */ -int -sifproxyarp(unit, hisaddr) - int unit; - u_int32_t hisaddr; -{ - struct arpreq arpreq; - - memset(&arpreq, 0, sizeof(arpreq)); - if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) - return 0; - - arpreq.arp_pa.sa_family = AF_INET; - INET_ADDR(arpreq.arp_pa) = hisaddr; - arpreq.arp_flags = ATF_PERM | ATF_PUBL; - if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) { - error("Couldn't set proxy ARP entry: %m"); - return 0; - } - - proxy_arp_addr = hisaddr; - return 1; -} - -/* - * cifproxyarp - Delete the proxy ARP entry for the peer. - */ -int -cifproxyarp(unit, hisaddr) - int unit; - u_int32_t hisaddr; -{ - struct arpreq arpreq; - - memset(&arpreq, 0, sizeof(arpreq)); - arpreq.arp_pa.sa_family = AF_INET; - INET_ADDR(arpreq.arp_pa) = hisaddr; - if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) { - error("Couldn't delete proxy ARP entry: %m"); - return 0; - } - - proxy_arp_addr = 0; - return 1; -} - -/* - * get_ether_addr - get the hardware address of an interface on the - * the same subnet as ipaddr. - */ -#define MAX_IFS 32 - -static int -get_ether_addr(ipaddr, hwaddr) - u_int32_t ipaddr; - struct sockaddr *hwaddr; -{ - struct ifreq *ifr, *ifend, ifreq; - int nif; - struct ifconf ifc; - u_int32_t ina, mask; - - /* - * Scan through the system's network interfaces. - */ -#ifdef SIOCGIFNUM - if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0) -#endif - nif = MAX_IFS; - ifc.ifc_len = nif * sizeof(struct ifreq); - ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len); - if (ifc.ifc_buf == 0) - return 0; - if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) { - warn("Couldn't get system interface list: %m"); - free(ifc.ifc_buf); - return 0; - } - ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); - for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) { - if (ifr->ifr_addr.sa_family != AF_INET) - continue; - /* - * Check that the interface is up, and not point-to-point or loopback. - */ - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - if ((ifreq.ifr_flags & - (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) - != (IFF_UP|IFF_BROADCAST)) - continue; - /* - * Get its netmask and check that it's on the right subnet. - */ - if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - ina = INET_ADDR(ifr->ifr_addr); - mask = INET_ADDR(ifreq.ifr_addr); - if ((ipaddr & mask) == (ina & mask)) - break; - } - - if (ifr >= ifend) { - warn("No suitable interface found for proxy ARP"); - free(ifc.ifc_buf); - return 0; - } - - info("found interface %s for proxy ARP", ifr->ifr_name); - if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) { - error("Couldn't get hardware address for %s", ifr->ifr_name); - free(ifc.ifc_buf); - return 0; - } - - free(ifc.ifc_buf); - return 1; -} - -/* - * get_hw_addr_dlpi - obtain the hardware address using DLPI - */ -static int -get_hw_addr_dlpi(name, hwaddr) - char *name; - struct sockaddr *hwaddr; -{ - char *p, *q; - int unit, iffd, adrlen; - unsigned char *adrp; - char ifdev[24]; - struct { - union DL_primitives prim; - char space[64]; - } reply; - - /* - * We have to open the device and ask it for its hardware address. - * First split apart the device name and unit. - */ - slprintf(ifdev, sizeof(ifdev), "/dev/%s", name); - for (q = ifdev + strlen(ifdev); --q >= ifdev; ) - if (!isdigit(*q)) - break; - unit = atoi(q+1); - q[1] = 0; - - /* - * Open the device and do a DLPI attach and phys_addr_req. - */ - iffd = open(ifdev, O_RDWR); - if (iffd < 0) { - error("Can't open %s: %m", ifdev); - return 0; - } - if (dlpi_attach(iffd, unit) < 0 - || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0 - || dlpi_info_req(iffd) < 0 - || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) { - close(iffd); - return 0; - } - - adrlen = reply.prim.info_ack.dl_addr_length; - adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset; - -#if DL_CURRENT_VERSION >= 2 - if (reply.prim.info_ack.dl_sap_length < 0) - adrlen += reply.prim.info_ack.dl_sap_length; - else - adrp += reply.prim.info_ack.dl_sap_length; -#endif - - hwaddr->sa_family = AF_UNSPEC; - memcpy(hwaddr->sa_data, adrp, adrlen); - - return 1; -} -/* - * get_hw_addr - obtain the hardware address for a named interface. - */ -static int -get_hw_addr(name, ina, hwaddr) - char *name; - u_int32_t ina; - struct sockaddr *hwaddr; -{ - /* New way - get the address by doing an arp request. */ - int s; - struct arpreq req; - - s = socket(AF_INET, SOCK_DGRAM, 0); - if (s < 0) - return 0; - memset(&req, 0, sizeof(req)); - req.arp_pa.sa_family = AF_INET; - INET_ADDR(req.arp_pa) = ina; - if (ioctl(s, SIOCGARP, &req) < 0) { - error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina)); - return 0; - } - *hwaddr = req.arp_ha; - hwaddr->sa_family = AF_UNSPEC; - - return 1; -} - -static int -dlpi_attach(fd, ppa) - int fd, ppa; -{ - dl_attach_req_t req; - struct strbuf buf; - - req.dl_primitive = DL_ATTACH_REQ; - req.dl_ppa = ppa; - buf.len = sizeof(req); - buf.buf = (void *) &req; - return putmsg(fd, &buf, NULL, RS_HIPRI); -} - -static int -dlpi_info_req(fd) - int fd; -{ - dl_info_req_t req; - struct strbuf buf; - - req.dl_primitive = DL_INFO_REQ; - buf.len = sizeof(req); - buf.buf = (void *) &req; - return putmsg(fd, &buf, NULL, RS_HIPRI); -} - -static int -dlpi_get_reply(fd, reply, expected_prim, maxlen) - union DL_primitives *reply; - int fd, expected_prim, maxlen; -{ - struct strbuf buf; - int flags, n; - struct pollfd pfd; - - /* - * Use poll to wait for a message with a timeout. - */ - pfd.fd = fd; - pfd.events = POLLIN | POLLPRI; - do { - n = poll(&pfd, 1, 1000); - } while (n == -1 && errno == EINTR); - if (n <= 0) - return -1; - - /* - * Get the reply. - */ - buf.maxlen = maxlen; - buf.buf = (void *) reply; - flags = 0; - if (getmsg(fd, &buf, NULL, &flags) < 0) - return -1; - - if (buf.len < sizeof(ulong)) { - if (debug) - dbglog("dlpi response short (len=%d)\n", buf.len); - return -1; - } - - if (reply->dl_primitive == expected_prim) - return 0; - - if (debug) { - if (reply->dl_primitive == DL_ERROR_ACK) { - dbglog("dlpi error %d (unix errno %d) for prim %x\n", - reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno, - reply->error_ack.dl_error_primitive); - } else { - dbglog("dlpi unexpected response prim %x\n", - reply->dl_primitive); - } - } - - return -1; -} - -/* - * Return user specified netmask, modified by any mask we might determine - * for address `addr' (in network byte order). - * Here we scan through the system's list of interfaces, looking for - * any non-point-to-point interfaces which might appear to be on the same - * network as `addr'. If we find any, we OR in their netmask to the - * user-specified netmask. - */ -u_int32_t -GetMask(addr) - u_int32_t addr; -{ - u_int32_t mask, nmask, ina; - struct ifreq *ifr, *ifend, ifreq; - int nif; - struct ifconf ifc; - - addr = ntohl(addr); - if (IN_CLASSA(addr)) /* determine network mask for address class */ - nmask = IN_CLASSA_NET; - else if (IN_CLASSB(addr)) - nmask = IN_CLASSB_NET; - else - nmask = IN_CLASSC_NET; - /* class D nets are disallowed by bad_ip_adrs */ - mask = netmask | htonl(nmask); - - /* - * Scan through the system's network interfaces. - */ -#ifdef SIOCGIFNUM - if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0) -#endif - nif = MAX_IFS; - ifc.ifc_len = nif * sizeof(struct ifreq); - ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len); - if (ifc.ifc_buf == 0) - return mask; - if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) { - warn("Couldn't get system interface list: %m"); - free(ifc.ifc_buf); - return mask; - } - ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); - for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) { - /* - * Check the interface's internet address. - */ - if (ifr->ifr_addr.sa_family != AF_INET) - continue; - ina = INET_ADDR(ifr->ifr_addr); - if ((ntohl(ina) & nmask) != (addr & nmask)) - continue; - /* - * Check that the interface is up, and not point-to-point or loopback. - */ - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK)) - != IFF_UP) - continue; - /* - * Get its netmask and OR it into our mask. - */ - if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - mask |= INET_ADDR(ifreq.ifr_addr); - } - - free(ifc.ifc_buf); - return mask; -} - -/* - * logwtmp - write an accounting record to the /var/adm/wtmp file. - */ -void -logwtmp(line, name, host) - const char *line, *name, *host; -{ - static struct utmpx utmpx; - - if (name[0] != 0) { - /* logging in */ - strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user)); - strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id)); - strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line)); - utmpx.ut_pid = getpid(); - utmpx.ut_type = USER_PROCESS; - } else { - utmpx.ut_type = DEAD_PROCESS; - } - gettimeofday(&utmpx.ut_tv, NULL); - updwtmpx("/var/adm/wtmpx", &utmpx); -} - -/* - * get_host_seed - return the serial number of this machine. - */ -int -get_host_seed() -{ - char buf[32]; - - if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) { - error("sysinfo: %m"); - return 0; - } - return (int) strtoul(buf, NULL, 16); -} - -static int -strioctl(fd, cmd, ptr, ilen, olen) - int fd, cmd, ilen, olen; - void *ptr; -{ - struct strioctl str; - - str.ic_cmd = cmd; - str.ic_timout = 0; - str.ic_len = ilen; - str.ic_dp = ptr; - if (ioctl(fd, I_STR, &str) == -1) - return -1; - if (str.ic_len != olen) - dbglog("strioctl: expected %d bytes, got %d for cmd %x\n", - olen, str.ic_len, cmd); - return 0; -} - -#if 0 -/* - * lock - create a lock file for the named lock device - */ - -#define LOCK_PREFIX "/var/spool/locks/LK." -static char lock_file[40]; /* name of lock file created */ - -int -lock(dev) - char *dev; -{ - int n, fd, pid; - struct stat sbuf; - char ascii_pid[12]; - - if (stat(dev, &sbuf) < 0) { - error("Can't get device number for %s: %m", dev); - return -1; - } - if ((sbuf.st_mode & S_IFMT) != S_IFCHR) { - error("Can't lock %s: not a character device", dev); - return -1; - } - slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d", - LOCK_PREFIX, major(sbuf.st_dev), - major(sbuf.st_rdev), minor(sbuf.st_rdev)); - - while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) { - if (errno == EEXIST - && (fd = open(lock_file, O_RDONLY, 0)) >= 0) { - /* Read the lock file to find out who has the device locked */ - n = read(fd, ascii_pid, 11); - if (n <= 0) { - error("Can't read pid from lock file %s", lock_file); - close(fd); - } else { - ascii_pid[n] = 0; - pid = atoi(ascii_pid); - if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) { - /* pid no longer exists - remove the lock file */ - if (unlink(lock_file) == 0) { - close(fd); - notice("Removed stale lock on %s (pid %d)", - dev, pid); - continue; - } else - warn("Couldn't remove stale lock on %s", - dev); - } else - notice("Device %s is locked by pid %d", - dev, pid); - } - close(fd); - } else - error("Can't create lock file %s: %m", lock_file); - lock_file[0] = 0; - return -1; - } - - slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid()); - write(fd, ascii_pid, 11); - - close(fd); - return 1; -} - -/* - * unlock - remove our lockfile - */ -void -unlock() -{ - if (lock_file[0]) { - unlink(lock_file); - lock_file[0] = 0; - } -} -#endif - -/* - * cifroute - delete a route through the addresses given. - */ -int -cifroute(u, our, his) - int u; - u_int32_t our, his; -{ - struct rtentry rt; - - memset(&rt, 0, sizeof(rt)); - rt.rt_dst.sa_family = AF_INET; - INET_ADDR(rt.rt_dst) = his; - rt.rt_gateway.sa_family = AF_INET; - INET_ADDR(rt.rt_gateway) = our; - rt.rt_flags = RTF_HOST; - - if (ioctl(ipfd, SIOCDELRT, &rt) < 0) { - error("Can't delete route: %m"); - return 0; - } - - return 1; -} - -/* - * have_route_to - determine if the system has a route to the specified - * IP address. Returns 0 if not, 1 if so, -1 if we can't tell. - * `addr' is in network byte order. - * For demand mode to work properly, we have to ignore routes - * through our own interface. - */ -#ifndef T_CURRENT /* needed for Solaris 2.5 */ -#define T_CURRENT MI_T_CURRENT -#endif - -int -have_route_to(addr) - u_int32_t addr; -{ -#ifdef SOL2 - int fd, r, flags, i; - struct { - struct T_optmgmt_req req; - struct opthdr hdr; - } req; - union { - struct T_optmgmt_ack ack; - unsigned char space[64]; - } ack; - struct opthdr *rh; - struct strbuf cbuf, dbuf; - int nroutes; - mib2_ipRouteEntry_t routes[8]; - mib2_ipRouteEntry_t *rp; - - fd = open(mux_dev_name, O_RDWR); - if (fd < 0) { - warn("have_route_to: couldn't open %s: %m", mux_dev_name); - return -1; - } - - req.req.PRIM_type = T_OPTMGMT_REQ; - req.req.OPT_offset = (char *) &req.hdr - (char *) &req; - req.req.OPT_length = sizeof(req.hdr); - req.req.MGMT_flags = T_CURRENT; - - req.hdr.level = MIB2_IP; - req.hdr.name = 0; - req.hdr.len = 0; - - cbuf.buf = (char *) &req; - cbuf.len = sizeof(req); - - if (putmsg(fd, &cbuf, NULL, 0) == -1) { - warn("have_route_to: putmsg: %m"); - close(fd); - return -1; - } - - for (;;) { - cbuf.buf = (char *) &ack; - cbuf.maxlen = sizeof(ack); - dbuf.buf = (char *) routes; - dbuf.maxlen = sizeof(routes); - flags = 0; - r = getmsg(fd, &cbuf, &dbuf, &flags); - if (r == -1) { - warn("have_route_to: getmsg: %m"); - close(fd); - return -1; - } - - if (cbuf.len < sizeof(struct T_optmgmt_ack) - || ack.ack.PRIM_type != T_OPTMGMT_ACK - || ack.ack.MGMT_flags != T_SUCCESS - || ack.ack.OPT_length < sizeof(struct opthdr)) { - dbglog("have_route_to: bad message len=%d prim=%d", - cbuf.len, ack.ack.PRIM_type); - close(fd); - return -1; - } - - rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset); - if (rh->level == 0 && rh->name == 0) - break; - if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) { - while (r == MOREDATA) - r = getmsg(fd, NULL, &dbuf, &flags); - continue; - } - - for (;;) { - nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t); - for (rp = routes, i = 0; i < nroutes; ++i, ++rp) { - if (rp->ipRouteMask != ~0) { - dbglog("have_route_to: dest=%x gw=%x mask=%x\n", - rp->ipRouteDest, rp->ipRouteNextHop, - rp->ipRouteMask); - if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0 - && rp->ipRouteNextHop != remote_addr) - return 1; - } - } - if (r == 0) - break; - r = getmsg(fd, NULL, &dbuf, &flags); - } - } - close(fd); - return 0; -#else - return -1; -#endif /* SOL2 */ -} - -/* - * get_pty - get a pty master/slave pair and chown the slave side to - * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space. - */ -int -get_pty(master_fdp, slave_fdp, slave_name, uid) - int *master_fdp; - int *slave_fdp; - char *slave_name; - int uid; -{ - int mfd, sfd; - char *pty_name; - struct termios tios; - - mfd = open("/dev/ptmx", O_RDWR); - if (mfd < 0) { - error("Couldn't open pty master: %m"); - return 0; - } - - pty_name = ptsname(mfd); - if (pty_name == NULL) { - error("Couldn't get name of pty slave"); - close(mfd); - return 0; - } - if (chown(pty_name, uid, -1) < 0) - warn("Couldn't change owner of pty slave: %m"); - if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0) - warn("Couldn't change permissions on pty slave: %m"); - if (unlockpt(mfd) < 0) - warn("Couldn't unlock pty slave: %m"); - - sfd = open(pty_name, O_RDWR); - if (sfd < 0) { - error("Couldn't open pty slave %s: %m", pty_name); - close(mfd); - return 0; - } - if (ioctl(sfd, I_PUSH, "ptem") < 0) - warn("Couldn't push ptem module on pty slave: %m"); - - dbglog("Using %s", pty_name); - strlcpy(slave_name, pty_name, MAXPATHLEN); - *master_fdp = mfd; - *slave_fdp = sfd; - - return 1; -} diff --git a/mdk-stage1/ppp/pppd/sys-sunos4.c b/mdk-stage1/ppp/pppd/sys-sunos4.c deleted file mode 100644 index 3344948e9..000000000 --- a/mdk-stage1/ppp/pppd/sys-sunos4.c +++ /dev/null @@ -1,1559 +0,0 @@ -/* - * System-dependent procedures for pppd under SunOS 4. - * - * Copyright (c) 1994 The Australian National University. - * All rights reserved. - * - * Permission to use, copy, modify, and distribute this software and its - * documentation is hereby granted, provided that the above copyright - * notice appears in all copies. This software is provided without any - * warranty, express or implied. The Australian National University - * makes no representations about the suitability of this software for - * any purpose. - * - * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY - * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF - * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGE. - * - * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO - * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, - * OR MODIFICATIONS. - */ - -#define RCSID "$Id$" - -#include <stdio.h> -#include <stddef.h> -#include <stdlib.h> -#include <string.h> -#include <ctype.h> -#include <errno.h> -#include <fcntl.h> -#include <unistd.h> -#include <termios.h> -#include <signal.h> -#include <malloc.h> -#include <utmp.h> -#include <sys/types.h> -#include <sys/param.h> -#include <sys/socket.h> -#include <sys/sockio.h> -#include <sys/stream.h> -#include <sys/stropts.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <sys/poll.h> -#include <net/if.h> -#include <net/if_arp.h> -#include <net/nit_if.h> -#include <net/route.h> -#include <net/ppp_defs.h> -#include <net/pppio.h> -#include <netinet/in.h> - -#include "pppd.h" - -#if defined(sun) && defined(sparc) -#include <alloca.h> -#ifndef __GNUC__ -extern void *alloca(); -#endif -#endif /*sparc*/ - -static const char rcsid[] = RCSID; - -static int pppfd; -static int fdmuxid = -1; -static int iffd; -static int sockfd; - -static int restore_term; -static struct termios inittermios; -static struct winsize wsinfo; /* Initial window size info */ -static pid_t parent_pid; /* PID of our parent */ - -extern u_char inpacket_buf[]; /* borrowed from main.c */ - -#define MAX_POLLFDS 32 -static struct pollfd pollfds[MAX_POLLFDS]; -static int n_pollfds; - -static int link_mtu, link_mru; - -#define NMODULES 32 -static int tty_nmodules; -static char tty_modules[NMODULES][FMNAMESZ+1]; - -static int if_is_up; /* Interface has been marked up */ -static u_int32_t ifaddrs[2]; /* local and remote addresses */ -static u_int32_t default_route_gateway; /* Gateway for default route added */ -static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */ - -/* Prototypes for procedures local to this file. */ -static int translate_speed __P((int)); -static int baud_rate_of __P((int)); -static int get_ether_addr __P((u_int32_t, struct sockaddr *)); -static int strioctl __P((int, int, void *, int, int)); - - -/* - * sys_init - System-dependent initialization. - */ -void -sys_init() -{ - int x; - - /* Get an internet socket for doing socket ioctl's on. */ - if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) - fatal("Couldn't create IP socket: %m"); - - /* - * We may want to send a SIGHUP to the session leader associated - * with our controlling terminal later. Because SunOS doesn't - * have getsid(), we make do with sending the signal to our - * parent process. - */ - parent_pid = getppid(); - - /* - * Open the ppp device. - */ - pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0); - if (pppfd < 0) - fatal("Can't open /dev/ppp: %m"); - if (kdebugflag) { - x = PPPDBG_LOG + PPPDBG_DRIVER; - strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0); - } - - /* Assign a new PPA and get its unit number. */ - if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) - fatal("Can't create new PPP interface: %m"); - - /* - * Open the ppp device again and push the if_ppp module on it. - */ - iffd = open("/dev/ppp", O_RDWR, 0); - if (iffd < 0) - fatal("Can't open /dev/ppp (2): %m"); - if (kdebugflag) { - x = PPPDBG_LOG + PPPDBG_DRIVER; - strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0); - } - if (strioctl(iffd, PPPIO_ATTACH, &ifunit, sizeof(int), 0) < 0) - fatal("Couldn't attach ppp interface to device: %m"); - if (ioctl(iffd, I_PUSH, "if_ppp") < 0) - fatal("Can't push ppp interface module: %m"); - if (kdebugflag) { - x = PPPDBG_LOG + PPPDBG_IF; - strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0); - } - if (strioctl(iffd, PPPIO_NEWPPA, &ifunit, sizeof(int), 0) < 0) - fatal("Couldn't create ppp interface unit: %m"); - x = PPP_IP; - if (strioctl(iffd, PPPIO_BIND, &x, sizeof(int), 0) < 0) - fatal("Couldn't bind ppp interface to IP SAP: %m"); - - n_pollfds = 0; -} - -/* - * sys_cleanup - restore any system state we modified before exiting: - * mark the interface down, delete default route and/or proxy arp entry. - * This shouldn't call die() because it's called from die(). - */ -void -sys_cleanup() -{ - if (if_is_up) - sifdown(0); - if (ifaddrs[0]) - cifaddr(0, ifaddrs[0], ifaddrs[1]); - if (default_route_gateway) - cifdefaultroute(0, 0, default_route_gateway); - if (proxy_arp_addr) - cifproxyarp(0, proxy_arp_addr); -} - -/* - * sys_close - Clean up in a child process before execing. - */ -void -sys_close() -{ - close(iffd); - close(pppfd); - close(sockfd); -} - -/* - * sys_check_options - check the options that the user specified - */ -int -sys_check_options() -{ - return 1; -} - -#if 0 -/* - * daemon - Detach us from controlling terminal session. - */ -int -daemon(nochdir, noclose) - int nochdir, noclose; -{ - int pid; - - if ((pid = fork()) < 0) - return -1; - if (pid != 0) - exit(0); /* parent dies */ - setsid(); - if (!nochdir) - chdir("/"); - if (!noclose) { - fclose(stdin); /* don't need stdin, stdout, stderr */ - fclose(stdout); - fclose(stderr); - } - return 0; -} -#endif - -/* - * ppp_available - check whether the system has any ppp interfaces - */ -int -ppp_available() -{ - struct stat buf; - - return stat("/dev/ppp", &buf) >= 0; -} - -/* - * tty_establish_ppp - Turn the serial port into a ppp interface. - */ -int -tty_establish_ppp(fd) - int fd; -{ - int i; - - /* Pop any existing modules off the tty stream. */ - for (i = 0;; ++i) - if (ioctl(fd, I_LOOK, tty_modules[i]) < 0 - || ioctl(fd, I_POP, 0) < 0) - break; - tty_nmodules = i; - - /* Push the async hdlc module and the compressor module. */ - if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) - fatal("Couldn't push PPP Async HDLC module: %m"); - if (ioctl(fd, I_PUSH, "ppp_comp") < 0) - error("Couldn't push PPP compression module: %m"); - - /* Link the serial port under the PPP multiplexor. */ - if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) - fatal("Can't link tty to PPP mux: %m"); - - return pppfd; -} - -/* - * disestablish_ppp - Restore the serial port to normal operation. - * It attempts to reconstruct the stream with the previously popped - * modules. This shouldn't call die() because it's called from die(). - */ -void -tty_disestablish_ppp(fd) - int fd; -{ - int i; - - if (fdmuxid >= 0) { - if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) { - if (!hungup) - error("Can't unlink tty from PPP mux: %m"); - } - fdmuxid = -1; - - if (!hungup) { - while (ioctl(fd, I_POP, 0) >= 0) - ; - for (i = tty_nmodules - 1; i >= 0; --i) - if (ioctl(fd, I_PUSH, tty_modules[i]) < 0) - error("Couldn't restore tty module %s: %m", - tty_modules[i]); - } - if (hungup && default_device && parent_pid > 0) { - /* - * If we have received a hangup, we need to send a SIGHUP - * to the terminal's controlling process. The reason is - * that the original stream head for the terminal hasn't - * seen the M_HANGUP message (it went up through the ppp - * driver to the stream head for our fd to /dev/ppp). - * Actually we send the signal to the process that invoked - * pppd, since SunOS doesn't have getsid(). - */ - kill(parent_pid, SIGHUP); - } - } -} - -/* - * Check whether the link seems not to be 8-bit clean. - */ -void -clean_check() -{ - int x; - char *s; - - if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0) - return; - s = NULL; - switch (~x) { - case RCV_B7_0: - s = "bit 7 set to 1"; - break; - case RCV_B7_1: - s = "bit 7 set to 0"; - break; - case RCV_EVNP: - s = "odd parity"; - break; - case RCV_ODDP: - s = "even parity"; - break; - } - if (s != NULL) { - warn("Serial link is not 8-bit clean:"); - warn("All received characters had %s", s); - } -} - -/* - * List of valid speeds. - */ -struct speed { - int speed_int, speed_val; -} speeds[] = { -#ifdef B50 - { 50, B50 }, -#endif -#ifdef B75 - { 75, B75 }, -#endif -#ifdef B110 - { 110, B110 }, -#endif -#ifdef B134 - { 134, B134 }, -#endif -#ifdef B150 - { 150, B150 }, -#endif -#ifdef B200 - { 200, B200 }, -#endif -#ifdef B300 - { 300, B300 }, -#endif -#ifdef B600 - { 600, B600 }, -#endif -#ifdef B1200 - { 1200, B1200 }, -#endif -#ifdef B1800 - { 1800, B1800 }, -#endif -#ifdef B2000 - { 2000, B2000 }, -#endif -#ifdef B2400 - { 2400, B2400 }, -#endif -#ifdef B3600 - { 3600, B3600 }, -#endif -#ifdef B4800 - { 4800, B4800 }, -#endif -#ifdef B7200 - { 7200, B7200 }, -#endif -#ifdef B9600 - { 9600, B9600 }, -#endif -#ifdef B19200 - { 19200, B19200 }, -#endif -#ifdef B38400 - { 38400, B38400 }, -#endif -#ifdef EXTA - { 19200, EXTA }, -#endif -#ifdef EXTB - { 38400, EXTB }, -#endif -#ifdef B57600 - { 57600, B57600 }, -#endif -#ifdef B115200 - { 115200, B115200 }, -#endif - { 0, 0 } -}; - -/* - * Translate from bits/second to a speed_t. - */ -static int -translate_speed(bps) - int bps; -{ - struct speed *speedp; - - if (bps == 0) - return 0; - for (speedp = speeds; speedp->speed_int; speedp++) - if (bps == speedp->speed_int) - return speedp->speed_val; - warn("speed %d not supported", bps); - return 0; -} - -/* - * Translate from a speed_t to bits/second. - */ -static int -baud_rate_of(speed) - int speed; -{ - struct speed *speedp; - - if (speed == 0) - return 0; - for (speedp = speeds; speedp->speed_int; speedp++) - if (speed == speedp->speed_val) - return speedp->speed_int; - return 0; -} - -/* - * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity, - * at the requested speed, etc. If `local' is true, set CLOCAL - * regardless of whether the modem option was specified. - */ -void -set_up_tty(fd, local) - int fd, local; -{ - int speed; - struct termios tios; - - if (tcgetattr(fd, &tios) < 0) - fatal("tcgetattr: %m"); - - if (!restore_term) { - inittermios = tios; - ioctl(fd, TIOCGWINSZ, &wsinfo); - } - - tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); - if (crtscts > 0) - tios.c_cflag |= CRTSCTS; - else if (crtscts < 0) - tios.c_cflag &= ~CRTSCTS; - - tios.c_cflag |= CS8 | CREAD | HUPCL; - if (local || !modem) - tios.c_cflag |= CLOCAL; - tios.c_iflag = IGNBRK | IGNPAR; - tios.c_oflag = 0; - tios.c_lflag = 0; - tios.c_cc[VMIN] = 1; - tios.c_cc[VTIME] = 0; - - if (crtscts == -2) { - tios.c_iflag |= IXON | IXOFF; - tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */ - tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */ - } - - speed = translate_speed(inspeed); - if (speed) { - cfsetospeed(&tios, speed); - cfsetispeed(&tios, speed); - } else { - speed = cfgetospeed(&tios); - /* - * We can't proceed if the serial port speed is 0, - * since that implies that the serial port is disabled. - */ - if (speed == B0) - fatal("Baud rate for %s is 0; need explicit baud rate", devnam); - } - - if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) - fatal("tcsetattr: %m"); - - baud_rate = inspeed = baud_rate_of(speed); - restore_term = 1; -} - -/* - * restore_tty - restore the terminal to the saved settings. - */ -void -restore_tty(fd) - int fd; -{ - if (restore_term) { - if (!default_device) { - /* - * Turn off echoing, because otherwise we can get into - * a loop with the tty and the modem echoing to each other. - * We presume we are the sole user of this tty device, so - * when we close it, it will revert to its defaults anyway. - */ - inittermios.c_lflag &= ~(ECHO | ECHONL); - } - if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0) - if (!hungup && errno != ENXIO) - warn("tcsetattr: %m"); - ioctl(fd, TIOCSWINSZ, &wsinfo); - restore_term = 0; - } -} - -/* - * setdtr - control the DTR line on the serial port. - * This is called from die(), so it shouldn't call die(). - */ -void -setdtr(fd, on) -int fd, on; -{ - int modembits = TIOCM_DTR; - - ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); -} - -/* - * open_loopback - open the device we use for getting packets - * in demand mode. Under SunOS, we use our existing fd - * to the ppp driver. - */ -int -open_ppp_loopback() -{ - return pppfd; -} - -/* - * output - Output PPP packet. - */ -void -output(unit, p, len) - int unit; - u_char *p; - int len; -{ - struct strbuf data; - int retries; - struct pollfd pfd; - - if (debug) - dbglog("sent %P", p, len); - - data.len = len; - data.buf = (caddr_t) p; - retries = 4; - while (putmsg(pppfd, NULL, &data, 0) < 0) { - if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) { - if (errno != ENXIO) - error("Couldn't send packet: %m"); - break; - } - pfd.fd = pppfd; - pfd.events = POLLOUT; - poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */ - } -} - - -/* - * wait_input - wait until there is data available, - * for the length of time specified by *timo (indefinite - * if timo is NULL). - */ -void -wait_input(timo) - struct timeval *timo; -{ - int t; - - t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000; - if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR) { - if (errno != EAGAIN) - fatal("poll: %m"); - /* we can get EAGAIN on a heavily loaded system, - * just wait a short time and try again. */ - usleep(50000); - } -} - -/* - * add_fd - add an fd to the set that wait_input waits for. - */ -void add_fd(fd) - int fd; -{ - int n; - - for (n = 0; n < n_pollfds; ++n) - if (pollfds[n].fd == fd) - return; - if (n_pollfds < MAX_POLLFDS) { - pollfds[n_pollfds].fd = fd; - pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP; - ++n_pollfds; - } else - error("Too many inputs!"); -} - -/* - * remove_fd - remove an fd from the set that wait_input waits for. - */ -void remove_fd(fd) - int fd; -{ - int n; - - for (n = 0; n < n_pollfds; ++n) { - if (pollfds[n].fd == fd) { - while (++n < n_pollfds) - pollfds[n-1] = pollfds[n]; - --n_pollfds; - break; - } - } -} - -#if 0 -/* - * wait_loop_output - wait until there is data available on the - * loopback, for the length of time specified by *timo (indefinite - * if timo is NULL). - */ -void -wait_loop_output(timo) - struct timeval *timo; -{ - wait_input(timo); -} - -/* - * wait_time - wait for a given length of time or until a - * signal is received. - */ -void -wait_time(timo) - struct timeval *timo; -{ - int n; - - n = select(0, NULL, NULL, NULL, timo); - if (n < 0 && errno != EINTR) - fatal("select: %m"); -} -#endif - -/* - * read_packet - get a PPP packet from the serial device. - */ -int -read_packet(buf) - u_char *buf; -{ - struct strbuf ctrl, data; - int flags, len; - unsigned char ctrlbuf[64]; - - for (;;) { - data.maxlen = PPP_MRU + PPP_HDRLEN; - data.buf = (caddr_t) buf; - ctrl.maxlen = sizeof(ctrlbuf); - ctrl.buf = (caddr_t) ctrlbuf; - flags = 0; - len = getmsg(pppfd, &ctrl, &data, &flags); - if (len < 0) { - if (errno == EAGAIN || errno == EINTR) - return -1; - fatal("Error reading packet: %m"); - } - - if (ctrl.len <= 0) - return data.len; - - /* - * Got a M_PROTO or M_PCPROTO message. Huh? - */ - if (debug) - dbglog("got ctrl msg len=%d", ctrl.len); - - } -} - -/* - * get_loop_output - get outgoing packets from the ppp device, - * and detect when we want to bring the real link up. - * Return value is 1 if we need to bring up the link, 0 otherwise. - */ -int -get_loop_output() -{ - int len; - int rv = 0; - - while ((len = read_packet(inpacket_buf)) > 0) { - if (loop_frame(inpacket_buf, len)) - rv = 1; - } - return rv; -} - -/* - * ppp_send_config - configure the transmit characteristics of - * the ppp interface. - */ -void -ppp_send_config(unit, mtu, asyncmap, pcomp, accomp) - int unit, mtu; - u_int32_t asyncmap; - int pcomp, accomp; -{ - int cf[2]; - struct ifreq ifr; - - link_mtu = mtu; - if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) { - if (hungup && errno == ENXIO) - return; - error("Couldn't set MTU: %m"); - } - if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { - error("Couldn't set transmit ACCM: %m"); - } - cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0); - cf[1] = COMP_PROT | COMP_AC; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - error("Couldn't set prot/AC compression: %m"); - } - - /* set mtu for ip as well */ - memset(&ifr, 0, sizeof(ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - ifr.ifr_metric = link_mtu; - if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) { - error("Couldn't set IP MTU: %m"); - } -} - -/* - * ppp_set_xaccm - set the extended transmit ACCM for the interface. - */ -void -ppp_set_xaccm(unit, accm) - int unit; - ext_accm accm; -{ - if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) { - if (!hungup || errno != ENXIO) - warn("Couldn't set extended ACCM: %m"); - } -} - -/* - * ppp_recv_config - configure the receive-side characteristics of - * the ppp interface. - */ -void -ppp_recv_config(unit, mru, asyncmap, pcomp, accomp) - int unit, mru; - u_int32_t asyncmap; - int pcomp, accomp; -{ - int cf[2]; - - link_mru = mru; - if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) { - if (hungup && errno == ENXIO) - return; - error("Couldn't set MRU: %m"); - } - if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { - error("Couldn't set receive ACCM: %m"); - } - cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0); - cf[1] = DECOMP_PROT | DECOMP_AC; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - error("Couldn't set prot/AC decompression: %m"); - } -} - -/* - * ccp_test - ask kernel whether a given compression method - * is acceptable for use. - */ -int -ccp_test(unit, opt_ptr, opt_len, for_transmit) - int unit, opt_len, for_transmit; - u_char *opt_ptr; -{ - if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP), - opt_ptr, opt_len, 0) >= 0) - return 1; - return (errno == ENOSR)? 0: -1; -} - -/* - * ccp_flags_set - inform kernel about the current state of CCP. - */ -void -ccp_flags_set(unit, isopen, isup) - int unit, isopen, isup; -{ - int cf[2]; - - cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0); - cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - if (!hungup || errno != ENXIO) - error("Couldn't set kernel CCP state: %m"); - } -} - -/* - * get_idle_time - return how long the link has been idle. - */ -int -get_idle_time(u, ip) - int u; - struct ppp_idle *ip; -{ - return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0; -} - -/* - * get_ppp_stats - return statistics for the link. - */ -int -get_ppp_stats(u, stats) - int u; - struct pppd_stats *stats; -{ - struct ppp_stats s; - - if (strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) { - error("Couldn't get link statistics: %m"); - return 0; - } - stats->bytes_in = s.p.ppp_ibytes; - stats->bytes_out = s.p.ppp_obytes; - return 1; -} - - -/* - * ccp_fatal_error - returns 1 if decompression was disabled as a - * result of an error detected after decompression of a packet, - * 0 otherwise. This is necessary because of patent nonsense. - */ -int -ccp_fatal_error(unit) - int unit; -{ - int cf[2]; - - cf[0] = cf[1] = 0; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - if (errno != ENXIO && errno != EINVAL) - error("Couldn't get compression flags: %m"); - return 0; - } - return cf[0] & CCP_FATALERROR; -} - -/* - * sifvjcomp - config tcp header compression - */ -int -sifvjcomp(u, vjcomp, xcidcomp, xmaxcid) - int u, vjcomp, xcidcomp, xmaxcid; -{ - int cf[2]; - char maxcid[2]; - - if (vjcomp) { - maxcid[0] = xcidcomp; - maxcid[1] = 15; /* XXX should be rmaxcid */ - if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) { - error("Couldn't initialize VJ compression: %m"); - } - } - - cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */ - + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0); - cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - if (vjcomp) - error("Couldn't enable VJ compression: %m"); - } - - return 1; -} - -/* - * sifup - Config the interface up and enable IP packets to pass. - */ -int -sifup(u) - int u; -{ - struct ifreq ifr; - - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface up (get): %m"); - return 0; - } - ifr.ifr_flags |= IFF_UP; - if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface up (set): %m"); - return 0; - } - if_is_up = 1; - return 1; -} - -/* - * sifdown - Config the interface down and disable IP. - */ -int -sifdown(u) - int u; -{ - struct ifreq ifr; - - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface down (get): %m"); - return 0; - } - if ((ifr.ifr_flags & IFF_UP) != 0) { - ifr.ifr_flags &= ~IFF_UP; - if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) { - error("Couldn't mark interface down (set): %m"); - return 0; - } - } - if_is_up = 0; - return 1; -} - -/* - * sifnpmode - Set the mode for handling packets for a given NP. - */ -int -sifnpmode(u, proto, mode) - int u; - int proto; - enum NPmode mode; -{ - int npi[2]; - - npi[0] = proto; - npi[1] = (int) mode; - if (strioctl(pppfd, PPPIO_NPMODE, npi, 2 * sizeof(int), 0) < 0) { - error("ioctl(set NP %d mode to %d): %m", proto, mode); - return 0; - } - return 1; -} - -#define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr) - -/* - * sifaddr - Config the interface IP addresses and netmask. - */ -int -sifaddr(u, o, h, m) - int u; - u_int32_t o, h, m; -{ - struct ifreq ifr; - - memset(&ifr, 0, sizeof(ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - ifr.ifr_addr.sa_family = AF_INET; - INET_ADDR(ifr.ifr_addr) = m; - if (ioctl(sockfd, SIOCSIFNETMASK, &ifr) < 0) { - error("Couldn't set IP netmask: %m"); - } - ifr.ifr_addr.sa_family = AF_INET; - INET_ADDR(ifr.ifr_addr) = o; - if (ioctl(sockfd, SIOCSIFADDR, &ifr) < 0) { - error("Couldn't set local IP address: %m"); - } - ifr.ifr_dstaddr.sa_family = AF_INET; - INET_ADDR(ifr.ifr_dstaddr) = h; - if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) { - error("Couldn't set remote IP address: %m"); - } -#if 0 /* now done in ppp_send_config */ - ifr.ifr_metric = link_mtu; - if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) { - error("Couldn't set IP MTU: %m"); - } -#endif - ifaddrs[0] = o; - ifaddrs[1] = h; - - return 1; -} - -/* - * cifaddr - Clear the interface IP addresses, and delete routes - * through the interface if possible. - */ -int -cifaddr(u, o, h) - int u; - u_int32_t o, h; -{ - struct rtentry rt; - - bzero(&rt, sizeof(rt)); - rt.rt_dst.sa_family = AF_INET; - INET_ADDR(rt.rt_dst) = h; - rt.rt_gateway.sa_family = AF_INET; - INET_ADDR(rt.rt_gateway) = o; - rt.rt_flags = RTF_HOST; - if (ioctl(sockfd, SIOCDELRT, &rt) < 0) - error("Couldn't delete route through interface: %m"); - ifaddrs[0] = 0; - return 1; -} - -/* - * sifdefaultroute - assign a default route through the address given. - */ -int -sifdefaultroute(u, l, g) - int u; - u_int32_t l, g; -{ - struct rtentry rt; - - bzero(&rt, sizeof(rt)); - rt.rt_dst.sa_family = AF_INET; - INET_ADDR(rt.rt_dst) = 0; - rt.rt_gateway.sa_family = AF_INET; - INET_ADDR(rt.rt_gateway) = g; - rt.rt_flags = RTF_GATEWAY; - - if (ioctl(sockfd, SIOCADDRT, &rt) < 0) { - error("Can't add default route: %m"); - return 0; - } - - default_route_gateway = g; - return 1; -} - -/* - * cifdefaultroute - delete a default route through the address given. - */ -int -cifdefaultroute(u, l, g) - int u; - u_int32_t l, g; -{ - struct rtentry rt; - - bzero(&rt, sizeof(rt)); - rt.rt_dst.sa_family = AF_INET; - INET_ADDR(rt.rt_dst) = 0; - rt.rt_gateway.sa_family = AF_INET; - INET_ADDR(rt.rt_gateway) = g; - rt.rt_flags = RTF_GATEWAY; - - if (ioctl(sockfd, SIOCDELRT, &rt) < 0) { - error("Can't delete default route: %m"); - return 0; - } - - default_route_gateway = 0; - return 1; -} - -/* - * sifproxyarp - Make a proxy ARP entry for the peer. - */ -int -sifproxyarp(unit, hisaddr) - int unit; - u_int32_t hisaddr; -{ - struct arpreq arpreq; - - bzero(&arpreq, sizeof(arpreq)); - if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) - return 0; - - arpreq.arp_pa.sa_family = AF_INET; - INET_ADDR(arpreq.arp_pa) = hisaddr; - arpreq.arp_flags = ATF_PERM | ATF_PUBL; - if (ioctl(sockfd, SIOCSARP, (caddr_t) &arpreq) < 0) { - error("Couldn't set proxy ARP entry: %m"); - return 0; - } - - proxy_arp_addr = hisaddr; - return 1; -} - -/* - * cifproxyarp - Delete the proxy ARP entry for the peer. - */ -int -cifproxyarp(unit, hisaddr) - int unit; - u_int32_t hisaddr; -{ - struct arpreq arpreq; - - bzero(&arpreq, sizeof(arpreq)); - arpreq.arp_pa.sa_family = AF_INET; - INET_ADDR(arpreq.arp_pa) = hisaddr; - if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) { - error("Couldn't delete proxy ARP entry: %m"); - return 0; - } - - proxy_arp_addr = 0; - return 1; -} - -/* - * get_ether_addr - get the hardware address of an interface on the - * the same subnet as ipaddr. - */ -#define MAX_IFS 32 - -static int -get_ether_addr(ipaddr, hwaddr) - u_int32_t ipaddr; - struct sockaddr *hwaddr; -{ - struct ifreq *ifr, *ifend; - u_int32_t ina, mask; - struct ifreq ifreq; - struct ifconf ifc; - struct ifreq ifs[MAX_IFS]; - int nit_fd; - - ifc.ifc_len = sizeof(ifs); - ifc.ifc_req = ifs; - if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) { - error("ioctl(SIOCGIFCONF): %m"); - return 0; - } - - /* - * Scan through looking for an interface with an Internet - * address on the same subnet as `ipaddr'. - */ - ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); - for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *) - ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) { - if (ifr->ifr_addr.sa_family == AF_INET) { - - /* - * Check that the interface is up, and not point-to-point - * or loopback. - */ - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - if ((ifreq.ifr_flags & - (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) - != (IFF_UP|IFF_BROADCAST)) - continue; - - /* - * Get its netmask and check that it's on the right subnet. - */ - if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr; - mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr; - if ((ipaddr & mask) != (ina & mask)) - continue; - - break; - } - } - - if (ifr >= ifend) - return 0; - info("found interface %s for proxy arp", ifr->ifr_name); - - /* - * Grab the physical address for this interface. - */ - if ((nit_fd = open("/dev/nit", O_RDONLY)) < 0) { - error("Couldn't open /dev/nit: %m"); - return 0; - } - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - if (ioctl(nit_fd, NIOCBIND, &ifreq) < 0 - || ioctl(nit_fd, SIOCGIFADDR, &ifreq) < 0) { - error("Couldn't get hardware address for %s: %m", - ifreq.ifr_name); - close(nit_fd); - return 0; - } - - hwaddr->sa_family = AF_UNSPEC; - memcpy(hwaddr->sa_data, ifreq.ifr_addr.sa_data, 6); - close(nit_fd); - return 1; -} - -/* - * have_route_to - determine if the system has any route to - * a given IP address. - * For demand mode to work properly, we have to ignore routes - * through our own interface. - */ -int have_route_to(addr) - u_int32_t addr; -{ - return -1; -} - -#define WTMPFILE "/usr/adm/wtmp" - -void -logwtmp(line, name, host) - const char *line, *name, *host; -{ - int fd; - struct stat buf; - struct utmp ut; - - if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0) - return; - if (!fstat(fd, &buf)) { - strncpy(ut.ut_line, line, sizeof(ut.ut_line)); - strncpy(ut.ut_name, name, sizeof(ut.ut_name)); - strncpy(ut.ut_host, host, sizeof(ut.ut_host)); - (void)time(&ut.ut_time); - if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp)) - (void)ftruncate(fd, buf.st_size); - } - close(fd); -} - -/* - * Return user specified netmask, modified by any mask we might determine - * for address `addr' (in network byte order). - * Here we scan through the system's list of interfaces, looking for - * any non-point-to-point interfaces which might appear to be on the same - * network as `addr'. If we find any, we OR in their netmask to the - * user-specified netmask. - */ -u_int32_t -GetMask(addr) - u_int32_t addr; -{ - u_int32_t mask, nmask, ina; - struct ifreq *ifr, *ifend, ifreq; - struct ifconf ifc; - - addr = ntohl(addr); - if (IN_CLASSA(addr)) /* determine network mask for address class */ - nmask = IN_CLASSA_NET; - else if (IN_CLASSB(addr)) - nmask = IN_CLASSB_NET; - else - nmask = IN_CLASSC_NET; - /* class D nets are disallowed by bad_ip_adrs */ - mask = netmask | htonl(nmask); - - /* - * Scan through the system's network interfaces. - */ - ifc.ifc_len = MAX_IFS * sizeof(struct ifreq); - ifc.ifc_req = alloca(ifc.ifc_len); - if (ifc.ifc_req == 0) - return mask; - if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) { - warn("Couldn't get system interface list: %m"); - return mask; - } - ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); - for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) { - /* - * Check the interface's internet address. - */ - if (ifr->ifr_addr.sa_family != AF_INET) - continue; - ina = INET_ADDR(ifr->ifr_addr); - if ((ntohl(ina) & nmask) != (addr & nmask)) - continue; - /* - * Check that the interface is up, and not point-to-point or loopback. - */ - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK)) - != IFF_UP) - continue; - /* - * Get its netmask and OR it into our mask. - */ - if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - mask |= INET_ADDR(ifreq.ifr_addr); - } - - return mask; -} - -static int -strioctl(fd, cmd, ptr, ilen, olen) - int fd, cmd, ilen, olen; - void *ptr; -{ - struct strioctl str; - - str.ic_cmd = cmd; - str.ic_timout = 0; - str.ic_len = ilen; - str.ic_dp = ptr; - if (ioctl(fd, I_STR, &str) == -1) - return -1; - if (str.ic_len != olen) - dbglog("strioctl: expected %d bytes, got %d for cmd %x\n", - olen, str.ic_len, cmd); - return 0; -} - -/* - * Use the hostid as part of the random number seed. - */ -int -get_host_seed() -{ - return gethostid(); -} - -#if 0 -/* - * Code for locking/unlocking the serial device. - * This code is derived from chat.c. - */ - -#if !defined(HDB) && !defined(SUNOS3) -#define HDB 1 /* ascii lock files are the default */ -#endif - -#ifndef LOCK_DIR -# if HDB -# define PIDSTRING -# define LOCK_PREFIX "/usr/spool/locks/LCK.." -# else /* HDB */ -# define LOCK_PREFIX "/usr/spool/uucp/LCK.." -# endif /* HDB */ -#endif /* LOCK_DIR */ - -static char *lock_file; /* name of lock file created */ - -/* - * lock - create a lock file for the named device. - */ -int -lock(dev) - char *dev; -{ - char hdb_lock_buffer[12]; - int fd, pid, n; - char *p; - size_t l; - - if ((p = strrchr(dev, '/')) != NULL) - dev = p + 1; - l = strlen(LOCK_PREFIX) + strlen(dev) + 1; - lock_file = malloc(l); - if (lock_file == NULL) - novm("lock file name"); - slprintf(lock_file, l, "%s%s", LOCK_PREFIX, dev); - - while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) { - if (errno == EEXIST - && (fd = open(lock_file, O_RDONLY, 0)) >= 0) { - /* Read the lock file to find out who has the device locked */ -#ifdef PIDSTRING - n = read(fd, hdb_lock_buffer, 11); - if (n > 0) { - hdb_lock_buffer[n] = 0; - pid = atoi(hdb_lock_buffer); - } -#else - n = read(fd, &pid, sizeof(pid)); -#endif - if (n <= 0) { - error("Can't read pid from lock file %s", lock_file); - close(fd); - } else { - if (kill(pid, 0) == -1 && errno == ESRCH) { - /* pid no longer exists - remove the lock file */ - if (unlink(lock_file) == 0) { - close(fd); - notice("Removed stale lock on %s (pid %d)", - dev, pid); - continue; - } else - warn("Couldn't remove stale lock on %s", - dev); - } else - notice("Device %s is locked by pid %d", - dev, pid); - } - close(fd); - } else - error("Can't create lock file %s: %m", lock_file); - free(lock_file); - lock_file = NULL; - return -1; - } - -#ifdef PIDSTRING - slprintf(hdb_lock_buffer, sizeof(hdb_lock_buffer), "%10d\n", getpid()); - write(fd, hdb_lock_buffer, 11); -#else - pid = getpid(); - write(fd, &pid, sizeof pid); -#endif - - close(fd); - return 0; -} - -/* - * unlock - remove our lockfile - */ -void -unlock() -{ - if (lock_file) { - unlink(lock_file); - free(lock_file); - lock_file = NULL; - } -} -#endif /* lock stuff removed */ - -/* - * get_pty - get a pty master/slave pair and chown the slave side - * to the uid given. Assumes slave_name points to >= 12 bytes of space. - */ -int -get_pty(master_fdp, slave_fdp, slave_name, uid) - int *master_fdp; - int *slave_fdp; - char *slave_name; - int uid; -{ - int i, mfd, sfd; - char pty_name[12]; - struct termios tios; - - sfd = -1; - for (i = 0; i < 64; ++i) { - slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x", - 'p' + i / 16, i % 16); - mfd = open(pty_name, O_RDWR, 0); - if (mfd >= 0) { - pty_name[5] = 't'; - sfd = open(pty_name, O_RDWR | O_NOCTTY, 0); - if (sfd >= 0) - break; - close(mfd); - } - } - if (sfd < 0) - return 0; - - strlcpy(slave_name, pty_name, 12); - *master_fdp = mfd; - *slave_fdp = sfd; - fchown(sfd, uid, -1); - fchmod(sfd, S_IRUSR | S_IWUSR); - if (tcgetattr(sfd, &tios) == 0) { - tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB); - tios.c_cflag |= CS8 | CREAD; - tios.c_iflag = IGNPAR | CLOCAL; - tios.c_oflag = 0; - tios.c_lflag = 0; - if (tcsetattr(sfd, TCSAFLUSH, &tios) < 0) - warn("couldn't set attributes on pty: %m"); - } else - warn("couldn't get attributes on pty: %m"); - - return 1; -} - -/* - * SunOS doesn't have strtoul :-( - */ -unsigned long -strtoul(str, ptr, base) - char *str, **ptr; - int base; -{ - return (unsigned long) strtol(str, ptr, base); -} - -/* - * Or strerror :-( - */ -extern char *sys_errlist[]; -extern int sys_nerr; - -char * -strerror(n) - int n; -{ - static char unknown[32]; - - if (n > 0 && n < sys_nerr) - return sys_errlist[n]; - slprintf(unknown, sizeof(unknown), "Error %d", n); - return unknown; -} diff --git a/mdk-stage1/ppp/pppd/tdb.c b/mdk-stage1/ppp/pppd/tdb.c deleted file mode 100644 index 7fd58291e..000000000 --- a/mdk-stage1/ppp/pppd/tdb.c +++ /dev/null @@ -1,1282 +0,0 @@ -/* - * Database functions - * Copyright (C) Andrew Tridgell 1999 - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms AND provided that this software or - * any derived work is only used as part of the PPP daemon (pppd) - * and related utilities. - * The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * Note: this software is also available under the Gnu Public License - * version 2 or later. - */ - -#include <stdlib.h> -#include <stdio.h> -#include <fcntl.h> -#include <unistd.h> -#include <string.h> -#include <fcntl.h> -#include <errno.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include "tdb.h" - -#define TDB_VERSION (0x26011967 + 1) -#define TDB_MAGIC (0x26011999U) -#define TDB_FREE_MAGIC (~TDB_MAGIC) -#define TDB_ALIGN 4 -#define MIN_REC_SIZE (2*sizeof(struct list_struct) + TDB_ALIGN) -#define DEFAULT_HASH_SIZE 128 -#define TDB_PAGE_SIZE 0x2000 -#define TDB_LEN_MULTIPLIER 10 -#define FREELIST_TOP (sizeof(struct tdb_header)) - -#define LOCK_SET 1 -#define LOCK_CLEAR 0 - -/* lock offsets */ -#define GLOBAL_LOCK 0 -#define ACTIVE_LOCK 4 -#define LIST_LOCK_BASE 1024 - -#define BUCKET(hash) ((hash) % tdb->header.hash_size) - -#ifndef MAP_FILE -#define MAP_FILE 0 -#endif - -/* the body of the database is made of one list_struct for the free space - plus a separate data list for each hash value */ -struct list_struct { - tdb_len rec_len; /* total byte length of record */ - tdb_off next; /* offset of the next record in the list */ - tdb_len key_len; /* byte length of key */ - tdb_len data_len; /* byte length of data */ - unsigned full_hash; /* the full 32 bit hash of the key */ - unsigned magic; /* try to catch errors */ - /* - the following union is implied - union { - char record[rec_len]; - struct { - char key[key_len]; - char data[data_len]; - } - } - */ -}; - -/* a null data record - useful for error returns */ -static TDB_DATA null_data; - -/* a byte range locking function - return 0 on success - this functions locks/unlocks 1 byte at the specified offset */ -static int tdb_brlock(TDB_CONTEXT *tdb, tdb_off offset, - int set, int rw_type, int lck_type) -{ -#if NOLOCK - return 0; -#else - struct flock fl; - - if (tdb->fd == -1) return 0; /* for in memory tdb */ - - if (tdb->read_only) return -1; - - fl.l_type = set==LOCK_SET?rw_type:F_UNLCK; - fl.l_whence = SEEK_SET; - fl.l_start = offset; - fl.l_len = 1; - fl.l_pid = 0; - - if (fcntl(tdb->fd, lck_type, &fl) != 0) { -#if TDB_DEBUG - if (lck_type == F_SETLKW) { - printf("lock %d failed at %d (%s)\n", - set, offset, strerror(errno)); - } -#endif - tdb->ecode = TDB_ERR_LOCK; - return -1; - } - return 0; -#endif -} - -/* lock a list in the database. list -1 is the alloc list */ -static int tdb_lock(TDB_CONTEXT *tdb, int list) -{ - if (list < -1 || list >= (int)tdb->header.hash_size) { -#if TDB_DEBUG - printf("bad list %d\n", list); -#endif - return -1; - } - if (tdb->locked[list+1] == 0) { - if (tdb_brlock(tdb, LIST_LOCK_BASE + 4*list, LOCK_SET, - F_WRLCK, F_SETLKW) != 0) { - return -1; - } - } - tdb->locked[list+1]++; - return 0; -} - -/* unlock the database. */ -static int tdb_unlock(TDB_CONTEXT *tdb, int list) -{ - if (list < -1 || list >= (int)tdb->header.hash_size) { -#if TDB_DEBUG - printf("bad unlock list %d\n", list); -#endif - return -1; - } - - if (tdb->locked[list+1] == 0) { -#if TDB_DEBUG - printf("not locked %d\n", list); -#endif - tdb->ecode = TDB_ERR_LOCK; - return -1; - } - if (tdb->locked[list+1] == 1) { - if (tdb_brlock(tdb, LIST_LOCK_BASE + 4*list, LOCK_CLEAR, - F_WRLCK, F_SETLKW) != 0) { - return -1; - } - } - tdb->locked[list+1]--; - return 0; -} - -/* the hash algorithm - turn a key into an integer - This is based on the hash agorithm from gdbm */ -static unsigned tdb_hash(TDB_DATA *key) -{ - unsigned value; /* Used to compute the hash value. */ - unsigned i; /* Used to cycle through random values. */ - - /* Set the initial value from the key size. */ - value = 0x238F13AF * key->dsize; - for (i=0; i < key->dsize; i++) { - value = (value + (key->dptr[i] << (i*5 % 24))); - } - - value = (1103515243 * value + 12345); - - return value; -} - -/* find the top of the hash chain for an open database */ -static tdb_off tdb_hash_top(TDB_CONTEXT *tdb, unsigned hash) -{ - tdb_off ret; - hash = BUCKET(hash); - ret = FREELIST_TOP + (hash+1)*sizeof(tdb_off); - return ret; -} - - -/* check for an out of bounds access - if it is out of bounds then - see if the database has been expanded by someone else and expand - if necessary */ -static int tdb_oob(TDB_CONTEXT *tdb, tdb_off offset) -{ - struct stat st; - if ((offset <= tdb->map_size) || (tdb->fd == -1)) return 0; - - fstat(tdb->fd, &st); - if (st.st_size <= (ssize_t)offset) { - tdb->ecode = TDB_ERR_IO; - return -1; - } - -#if HAVE_MMAP - if (tdb->map_ptr) { - munmap(tdb->map_ptr, tdb->map_size); - tdb->map_ptr = NULL; - } -#endif - - tdb->map_size = st.st_size; -#if HAVE_MMAP - tdb->map_ptr = (void *)mmap(NULL, tdb->map_size, - tdb->read_only?PROT_READ:PROT_READ|PROT_WRITE, - MAP_SHARED | MAP_FILE, tdb->fd, 0); -#endif - return 0; -} - - -/* write a lump of data at a specified offset */ -static int tdb_write(TDB_CONTEXT *tdb, tdb_off offset, const char *buf, tdb_len len) -{ - if (tdb_oob(tdb, offset + len) != 0) { - /* oops - trying to write beyond the end of the database! */ - return -1; - } - - if (tdb->map_ptr) { - memcpy(offset + (char *)tdb->map_ptr, buf, len); - } else { - if (lseek(tdb->fd, offset, SEEK_SET) != offset || - write(tdb->fd, buf, len) != (ssize_t)len) { - tdb->ecode = TDB_ERR_IO; - return -1; - } - } - return 0; -} - -/* read a lump of data at a specified offset */ -static int tdb_read(TDB_CONTEXT *tdb, tdb_off offset, char *buf, tdb_len len) -{ - if (tdb_oob(tdb, offset + len) != 0) { - /* oops - trying to read beyond the end of the database! */ - return -1; - } - - if (tdb->map_ptr) { - memcpy(buf, offset + (char *)tdb->map_ptr, len); - } else { - if (lseek(tdb->fd, offset, SEEK_SET) != offset || - read(tdb->fd, buf, len) != (ssize_t)len) { - tdb->ecode = TDB_ERR_IO; - return -1; - } - } - return 0; -} - - -/* read a lump of data, allocating the space for it */ -static char *tdb_alloc_read(TDB_CONTEXT *tdb, tdb_off offset, tdb_len len) -{ - char *buf; - - buf = (char *)malloc(len); - - if (!buf) { - tdb->ecode = TDB_ERR_OOM; - return NULL; - } - - if (tdb_read(tdb, offset, buf, len) == -1) { - free(buf); - return NULL; - } - - return buf; -} - -/* convenience routine for writing a record */ -static int rec_write(TDB_CONTEXT *tdb, tdb_off offset, struct list_struct *rec) -{ - return tdb_write(tdb, offset, (char *)rec, sizeof(*rec)); -} - -/* convenience routine for writing a tdb_off */ -static int ofs_write(TDB_CONTEXT *tdb, tdb_off offset, tdb_off *d) -{ - return tdb_write(tdb, offset, (char *)d, sizeof(*d)); -} - -/* read a tdb_off from the store */ -static int ofs_read(TDB_CONTEXT *tdb, tdb_off offset, tdb_off *d) -{ - return tdb_read(tdb, offset, (char *)d, sizeof(*d)); -} - -/* read a record and check for simple errors */ -static int rec_read(TDB_CONTEXT *tdb, tdb_off offset, struct list_struct *rec) -{ - if (tdb_read(tdb, offset, (char *)rec, sizeof(*rec)) == -1) return -1; - if (rec->magic != TDB_MAGIC) { -#if TDB_DEBUG - printf("bad magic 0x%08x at offset %d\n", - rec->magic, offset); -#endif - tdb->ecode = TDB_ERR_CORRUPT; - return -1; - } - if (tdb_oob(tdb, rec->next) != 0) { - return -1; - } - return 0; -} - -/* expand the database at least length bytes by expanding the - underlying file and doing the mmap again if necessary */ -static int tdb_expand(TDB_CONTEXT *tdb, tdb_off length) -{ - struct list_struct rec; - tdb_off offset, ptr; - char b = 0; - - tdb_lock(tdb,-1); - - /* make sure we know about any previous expansions by another - process */ - tdb_oob(tdb,tdb->map_size + 1); - - /* always make room for at least 10 more records */ - length *= TDB_LEN_MULTIPLIER; - - /* and round the database up to a multiple of TDB_PAGE_SIZE */ - length = ((tdb->map_size + length + TDB_PAGE_SIZE) & ~(TDB_PAGE_SIZE - 1)) - tdb->map_size; - - /* expand the file itself */ - if (tdb->fd != -1) { - lseek(tdb->fd, tdb->map_size + length - 1, SEEK_SET); - if (write(tdb->fd, &b, 1) != 1) goto fail; - } - - /* form a new freelist record */ - offset = FREELIST_TOP; - rec.rec_len = length - sizeof(rec); - rec.magic = TDB_FREE_MAGIC; - if (ofs_read(tdb, offset, &rec.next) == -1) { - goto fail; - } - -#if HAVE_MMAP - if (tdb->fd != -1 && tdb->map_ptr) { - munmap(tdb->map_ptr, tdb->map_size); - tdb->map_ptr = NULL; - } -#endif - - tdb->map_size += length; - - if (tdb->fd == -1) { - tdb->map_ptr = realloc(tdb->map_ptr, tdb->map_size); - } - - /* write it out */ - if (rec_write(tdb, tdb->map_size - length, &rec) == -1) { - goto fail; - } - - /* link it into the free list */ - ptr = tdb->map_size - length; - if (ofs_write(tdb, offset, &ptr) == -1) goto fail; - -#if HAVE_MMAP - if (tdb->fd != -1) { - tdb->map_ptr = (void *)mmap(NULL, tdb->map_size, - PROT_READ|PROT_WRITE, - MAP_SHARED | MAP_FILE, tdb->fd, 0); - } -#endif - - tdb_unlock(tdb, -1); - return 0; - - fail: - tdb_unlock(tdb,-1); - return -1; -} - -/* allocate some space from the free list. The offset returned points - to a unconnected list_struct within the database with room for at - least length bytes of total data - - 0 is returned if the space could not be allocated - */ -static tdb_off tdb_allocate(TDB_CONTEXT *tdb, tdb_len length) -{ - tdb_off offset, rec_ptr, last_ptr; - struct list_struct rec, lastrec, newrec; - - tdb_lock(tdb, -1); - - again: - last_ptr = 0; - offset = FREELIST_TOP; - - /* read in the freelist top */ - if (ofs_read(tdb, offset, &rec_ptr) == -1) { - goto fail; - } - - /* keep looking until we find a freelist record that is big - enough */ - while (rec_ptr) { - if (tdb_read(tdb, rec_ptr, (char *)&rec, sizeof(rec)) == -1) { - goto fail; - } - - if (rec.magic != TDB_FREE_MAGIC) { -#if TDB_DEBUG - printf("bad magic 0x%08x in free list\n", rec.magic); -#endif - goto fail; - } - - if (rec.rec_len >= length) { - /* found it - now possibly split it up */ - if (rec.rec_len > length + MIN_REC_SIZE) { - length = (length + TDB_ALIGN) & ~(TDB_ALIGN-1); - - newrec.rec_len = rec.rec_len - (sizeof(rec) + length); - newrec.next = rec.next; - newrec.magic = TDB_FREE_MAGIC; - - rec.rec_len = length; - rec.next = rec_ptr + sizeof(rec) + rec.rec_len; - - if (rec_write(tdb, rec.next, &newrec) == -1) { - goto fail; - } - - if (rec_write(tdb, rec_ptr, &rec) == -1) { - goto fail; - } - } - - /* remove it from the list */ - if (last_ptr == 0) { - offset = FREELIST_TOP; - - if (ofs_write(tdb, offset, &rec.next) == -1) { - goto fail; - } - } else { - lastrec.next = rec.next; - if (rec_write(tdb, last_ptr, &lastrec) == -1) { - goto fail; - } - } - - /* all done - return the new record offset */ - tdb_unlock(tdb, -1); - return rec_ptr; - } - - /* move to the next record */ - lastrec = rec; - last_ptr = rec_ptr; - rec_ptr = rec.next; - } - - /* we didn't find enough space. See if we can expand the - database and if we can then try again */ - if (tdb_expand(tdb, length + sizeof(rec)) == 0) goto again; - - fail: -#if TDB_DEBUG - printf("tdb_allocate failed for size %u\n", length); -#endif - tdb_unlock(tdb, -1); - return 0; -} - -/* initialise a new database with a specified hash size */ -static int tdb_new_database(TDB_CONTEXT *tdb, int hash_size) -{ - struct tdb_header header; - tdb_off offset; - int i, size = 0; - tdb_off buf[16]; - - /* create the header */ - memset(&header, 0, sizeof(header)); - memcpy(header.magic_food, TDB_MAGIC_FOOD, strlen(TDB_MAGIC_FOOD)+1); - header.version = TDB_VERSION; - header.hash_size = hash_size; - lseek(tdb->fd, 0, SEEK_SET); - ftruncate(tdb->fd, 0); - - if (tdb->fd != -1 && write(tdb->fd, &header, sizeof(header)) != - sizeof(header)) { - tdb->ecode = TDB_ERR_IO; - return -1; - } else size += sizeof(header); - - /* the freelist and hash pointers */ - offset = 0; - memset(buf, 0, sizeof(buf)); - - for (i=0;(hash_size+1)-i >= 16; i += 16) { - if (tdb->fd != -1 && write(tdb->fd, buf, sizeof(buf)) != - sizeof(buf)) { - tdb->ecode = TDB_ERR_IO; - return -1; - } else size += sizeof(buf); - } - - for (;i<hash_size+1; i++) { - if (tdb->fd != -1 && write(tdb->fd, buf, sizeof(tdb_off)) != - sizeof(tdb_off)) { - tdb->ecode = TDB_ERR_IO; - return -1; - } else size += sizeof(tdb_off); - } - - if (tdb->fd == -1) { - tdb->map_ptr = calloc(size, 1); - tdb->map_size = size; - if (tdb->map_ptr == NULL) { - tdb->ecode = TDB_ERR_IO; - return -1; - } - memcpy(&tdb->header, &header, sizeof(header)); - } - -#if TDB_DEBUG - printf("initialised database of hash_size %u\n", - hash_size); -#endif - return 0; -} - -/* Returns 0 on fail. On success, return offset of record, and fills - in rec */ -static tdb_off tdb_find(TDB_CONTEXT *tdb, TDB_DATA key, unsigned int hash, - struct list_struct *rec) -{ - tdb_off offset, rec_ptr; - - /* find the top of the hash chain */ - offset = tdb_hash_top(tdb, hash); - - /* read in the hash top */ - if (ofs_read(tdb, offset, &rec_ptr) == -1) - return 0; - - /* keep looking until we find the right record */ - while (rec_ptr) { - if (rec_read(tdb, rec_ptr, rec) == -1) - return 0; - - if (hash == rec->full_hash && key.dsize == rec->key_len) { - char *k; - /* a very likely hit - read the key */ - k = tdb_alloc_read(tdb, rec_ptr + sizeof(*rec), - rec->key_len); - - if (!k) - return 0; - - if (memcmp(key.dptr, k, key.dsize) == 0) { - free(k); - return rec_ptr; - } - free(k); - } - - /* move to the next record */ - rec_ptr = rec->next; - } - return 0; -} - -/* - return an error string for the last tdb error -*/ -char *tdb_error(TDB_CONTEXT *tdb) -{ - int i; - static struct { - enum TDB_ERROR ecode; - char *estring; - } emap[] = { - {TDB_SUCCESS, "Success"}, - {TDB_ERR_CORRUPT, "Corrupt database"}, - {TDB_ERR_IO, "IO Error"}, - {TDB_ERR_LOCK, "Locking error"}, - {TDB_ERR_OOM, "Out of memory"}, - {TDB_ERR_EXISTS, "Record exists"}, - {-1, NULL}}; - if (tdb != NULL) { - for (i=0;emap[i].estring;i++) { - if (tdb->ecode == emap[i].ecode) return emap[i].estring; - } - } else { - return "Invalid tdb context"; - } - return "Invalid error code"; -} - - -/* update an entry in place - this only works if the new data size - is <= the old data size and the key exists. - on failure return -1 -*/ -int tdb_update(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf) -{ - unsigned hash; - struct list_struct rec; - tdb_off rec_ptr; - int ret = -1; - - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_update() called with null context\n"); -#endif - return -1; - } - - /* find which hash bucket it is in */ - hash = tdb_hash(&key); - - tdb_lock(tdb, BUCKET(hash)); - rec_ptr = tdb_find(tdb, key, hash, &rec); - - if (!rec_ptr) - goto out; - - /* must be long enough */ - if (rec.rec_len < key.dsize + dbuf.dsize) - goto out; - - if (tdb_write(tdb, rec_ptr + sizeof(rec) + rec.key_len, - dbuf.dptr, dbuf.dsize) == -1) - goto out; - - if (dbuf.dsize != rec.data_len) { - /* update size */ - rec.data_len = dbuf.dsize; - ret = rec_write(tdb, rec_ptr, &rec); - } else - ret = 0; - - out: - tdb_unlock(tdb, BUCKET(hash)); - return ret; -} - -/* find an entry in the database given a key */ -TDB_DATA tdb_fetch(TDB_CONTEXT *tdb, TDB_DATA key) -{ - unsigned hash; - tdb_off rec_ptr; - struct list_struct rec; - TDB_DATA ret = null_data; - - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_fetch() called with null context\n"); -#endif - return null_data; - } - - /* find which hash bucket it is in */ - hash = tdb_hash(&key); - - tdb_lock(tdb, BUCKET(hash)); - rec_ptr = tdb_find(tdb, key, hash, &rec); - - if (rec_ptr) { - ret.dptr = tdb_alloc_read(tdb, - rec_ptr + sizeof(rec) + rec.key_len, - rec.data_len); - ret.dsize = rec.data_len; - } - - tdb_unlock(tdb, BUCKET(hash)); - return ret; -} - -/* check if an entry in the database exists - - note that 1 is returned if the key is found and 0 is returned if not found - this doesn't match the conventions in the rest of this module, but is - compatible with gdbm -*/ -int tdb_exists(TDB_CONTEXT *tdb, TDB_DATA key) -{ - unsigned hash; - tdb_off rec_ptr; - struct list_struct rec; - - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_exists() called with null context\n"); -#endif - return 0; - } - - /* find which hash bucket it is in */ - hash = tdb_hash(&key); - - tdb_lock(tdb, BUCKET(hash)); - rec_ptr = tdb_find(tdb, key, hash, &rec); - tdb_unlock(tdb, BUCKET(hash)); - - return rec_ptr != 0; -} - -/* traverse the entire database - calling fn(tdb, key, data) on each element. - return -1 on error or the record count traversed - if fn is NULL then it is not called - a non-zero return value from fn() indicates that the traversal should stop - */ -int tdb_traverse(TDB_CONTEXT *tdb, int (*fn)(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void* state), void* state) -{ - int count = 0; - unsigned h; - tdb_off offset, rec_ptr; - struct list_struct rec; - char *data; - TDB_DATA key, dbuf; - - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_traverse() called with null context\n"); -#endif - return -1; - } - - /* loop over all hash chains */ - for (h = 0; h < tdb->header.hash_size; h++) { - tdb_lock(tdb, BUCKET(h)); - - /* read in the hash top */ - offset = tdb_hash_top(tdb, h); - if (ofs_read(tdb, offset, &rec_ptr) == -1) { - goto fail; - } - - /* traverse all records for this hash */ - while (rec_ptr) { - if (rec_read(tdb, rec_ptr, &rec) == -1) { - goto fail; - } - - /* now read the full record */ - data = tdb_alloc_read(tdb, rec_ptr + sizeof(rec), - rec.key_len + rec.data_len); - if (!data) { - goto fail; - } - - key.dptr = data; - key.dsize = rec.key_len; - dbuf.dptr = data + rec.key_len; - dbuf.dsize = rec.data_len; - count++; - - if (fn && fn(tdb, key, dbuf, state) != 0) { - /* they want us to stop traversing */ - free(data); - tdb_unlock(tdb, BUCKET(h)); - return count; - } - - /* a miss - drat */ - free(data); - - /* move to the next record */ - rec_ptr = rec.next; - } - tdb_unlock(tdb, BUCKET(h)); - } - - /* return the number traversed */ - return count; - - fail: - tdb_unlock(tdb, BUCKET(h)); - return -1; -} - - -/* find the first entry in the database and return its key */ -TDB_DATA tdb_firstkey(TDB_CONTEXT *tdb) -{ - tdb_off offset, rec_ptr; - struct list_struct rec; - unsigned hash; - TDB_DATA ret; - - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_firstkey() called with null context\n"); -#endif - return null_data; - } - - /* look for a non-empty hash chain */ - for (hash = 0, rec_ptr = 0; - hash < tdb->header.hash_size; - hash++) { - /* find the top of the hash chain */ - offset = tdb_hash_top(tdb, hash); - - tdb_lock(tdb, BUCKET(hash)); - - /* read in the hash top */ - if (ofs_read(tdb, offset, &rec_ptr) == -1) { - goto fail; - } - - if (rec_ptr) break; - - tdb_unlock(tdb, BUCKET(hash)); - } - - if (rec_ptr == 0) return null_data; - - /* we've found a non-empty chain, now read the record */ - if (rec_read(tdb, rec_ptr, &rec) == -1) { - goto fail; - } - - /* allocate and read the key space */ - ret.dptr = tdb_alloc_read(tdb, rec_ptr + sizeof(rec), rec.key_len); - ret.dsize = rec.key_len; - tdb_unlock(tdb, BUCKET(hash)); - return ret; - - fail: - tdb_unlock(tdb, BUCKET(hash)); - return null_data; -} - -/* find the next entry in the database, returning its key */ -TDB_DATA tdb_nextkey(TDB_CONTEXT *tdb, TDB_DATA key) -{ - unsigned hash, hbucket; - tdb_off rec_ptr, offset; - struct list_struct rec; - TDB_DATA ret; - - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_nextkey() called with null context\n"); -#endif - return null_data; - } - - /* find which hash bucket it is in */ - hash = tdb_hash(&key); - hbucket = BUCKET(hash); - - tdb_lock(tdb, hbucket); - rec_ptr = tdb_find(tdb, key, hash, &rec); - if (rec_ptr) { - /* we want the next record after this one */ - rec_ptr = rec.next; - } - - /* not found or last in hash: look for next non-empty hash chain */ - while (rec_ptr == 0) { - tdb_unlock(tdb, hbucket); - - if (++hbucket >= tdb->header.hash_size - 1) - return null_data; - - offset = tdb_hash_top(tdb, hbucket); - tdb_lock(tdb, hbucket); - /* read in the hash top */ - if (ofs_read(tdb, offset, &rec_ptr) == -1) { - tdb_unlock(tdb, hbucket); - return null_data; - } - } - - /* Read the record. */ - if (rec_read(tdb, rec_ptr, &rec) == -1) { - tdb_unlock(tdb, hbucket); - return null_data; - } - /* allocate and read the key */ - ret.dptr = tdb_alloc_read(tdb, rec_ptr + sizeof(rec), rec.key_len); - ret.dsize = rec.key_len; - tdb_unlock(tdb, hbucket); - - return ret; -} - -/* delete an entry in the database given a key */ -int tdb_delete(TDB_CONTEXT *tdb, TDB_DATA key) -{ - unsigned hash; - tdb_off offset, rec_ptr, last_ptr; - struct list_struct rec, lastrec; - char *data = NULL; - - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_delete() called with null context\n"); -#endif - return -1; - } - - /* find which hash bucket it is in */ - hash = tdb_hash(&key); - - tdb_lock(tdb, BUCKET(hash)); - - /* find the top of the hash chain */ - offset = tdb_hash_top(tdb, hash); - - /* read in the hash top */ - if (ofs_read(tdb, offset, &rec_ptr) == -1) { - goto fail; - } - - last_ptr = 0; - - /* keep looking until we find the right record */ - while (rec_ptr) { - if (rec_read(tdb, rec_ptr, &rec) == -1) { - goto fail; - } - - if (hash == rec.full_hash && key.dsize == rec.key_len) { - /* a very likely hit - read the record and full key */ - data = tdb_alloc_read(tdb, rec_ptr + sizeof(rec), - rec.key_len); - if (!data) { - goto fail; - } - - if (memcmp(key.dptr, data, key.dsize) == 0) { - /* a definite match - delete it */ - if (last_ptr == 0) { - offset = tdb_hash_top(tdb, hash); - if (ofs_write(tdb, offset, &rec.next) == -1) { - goto fail; - } - } else { - lastrec.next = rec.next; - if (rec_write(tdb, last_ptr, &lastrec) == -1) { - goto fail; - } - } - tdb_unlock(tdb, BUCKET(hash)); - tdb_lock(tdb, -1); - /* and recover the space */ - offset = FREELIST_TOP; - if (ofs_read(tdb, offset, &rec.next) == -1) { - goto fail2; - } - rec.magic = TDB_FREE_MAGIC; - if (rec_write(tdb, rec_ptr, &rec) == -1) { - goto fail2; - } - if (ofs_write(tdb, offset, &rec_ptr) == -1) { - goto fail2; - } - - /* yipee - all done */ - free(data); - tdb_unlock(tdb, -1); - return 0; - } - - /* a miss - drat */ - free(data); - data = NULL; - } - - /* move to the next record */ - last_ptr = rec_ptr; - lastrec = rec; - rec_ptr = rec.next; - } - - fail: - if (data) free(data); - tdb_unlock(tdb, BUCKET(hash)); - return -1; - - fail2: - if (data) free(data); - tdb_unlock(tdb, -1); - return -1; -} - - -/* store an element in the database, replacing any existing element - with the same key - - return 0 on success, -1 on failure -*/ -int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag) -{ - struct list_struct rec; - unsigned hash; - tdb_off rec_ptr, offset; - char *p = NULL; - - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_store() called with null context\n"); -#endif - return -1; - } - - /* find which hash bucket it is in */ - hash = tdb_hash(&key); - - /* check for it existing */ - if (flag == TDB_INSERT && tdb_exists(tdb, key)) { - tdb->ecode = TDB_ERR_EXISTS; - return -1; - } - - /* first try in-place update */ - if (flag != TDB_INSERT && tdb_update(tdb, key, dbuf) == 0) { - return 0; - } - - rec_ptr = tdb_allocate(tdb, key.dsize + dbuf.dsize); - if (rec_ptr == 0) { - return -1; - } - - tdb_lock(tdb, BUCKET(hash)); - - /* delete any existing record - if it doesn't exist we don't care */ - if (flag != TDB_INSERT) { - tdb_delete(tdb, key); - } - - /* read the newly created record */ - if (tdb_read(tdb, rec_ptr, (char *)&rec, sizeof(rec)) == -1) { - goto fail; - } - - if (rec.magic != TDB_FREE_MAGIC) goto fail; - - /* find the top of the hash chain */ - offset = tdb_hash_top(tdb, hash); - - /* read in the hash top diretcly into our next pointer */ - if (ofs_read(tdb, offset, &rec.next) == -1) { - goto fail; - } - - rec.key_len = key.dsize; - rec.data_len = dbuf.dsize; - rec.full_hash = hash; - rec.magic = TDB_MAGIC; - - p = (char *)malloc(sizeof(rec) + key.dsize + dbuf.dsize); - if (!p) { - tdb->ecode = TDB_ERR_OOM; - goto fail; - } - - memcpy(p, &rec, sizeof(rec)); - memcpy(p+sizeof(rec), key.dptr, key.dsize); - memcpy(p+sizeof(rec)+key.dsize, dbuf.dptr, dbuf.dsize); - - if (tdb_write(tdb, rec_ptr, p, sizeof(rec)+key.dsize+dbuf.dsize) == -1) - goto fail; - - free(p); - p = NULL; - - /* and point the top of the hash chain at it */ - if (ofs_write(tdb, offset, &rec_ptr) == -1) goto fail; - - tdb_unlock(tdb, BUCKET(hash)); - return 0; - - fail: -#if TDB_DEBUG - printf("store failed for hash 0x%08x in bucket %u\n", hash, BUCKET(hash)); -#endif - if (p) free(p); - tdb_unlock(tdb, BUCKET(hash)); - return -1; -} - - -/* open the database, creating it if necessary - - The open_flags and mode are passed straight to the open call on the database - file. A flags value of O_WRONLY is invalid - - The hash size is advisory, use zero for a default value. - - return is NULL on error -*/ -TDB_CONTEXT *tdb_open(char *name, int hash_size, int tdb_flags, - int open_flags, mode_t mode) -{ - TDB_CONTEXT tdb, *ret; - struct stat st; - - memset(&tdb, 0, sizeof(tdb)); - - tdb.fd = -1; - tdb.name = NULL; - tdb.map_ptr = NULL; - - if ((open_flags & O_ACCMODE) == O_WRONLY) { - goto fail; - } - - if (hash_size == 0) hash_size = DEFAULT_HASH_SIZE; - - tdb.read_only = ((open_flags & O_ACCMODE) == O_RDONLY); - - if (name != NULL) { - tdb.fd = open(name, open_flags, mode); - if (tdb.fd == -1) { - goto fail; - } - } - - /* ensure there is only one process initialising at once */ - tdb_brlock(&tdb, GLOBAL_LOCK, LOCK_SET, F_WRLCK, F_SETLKW); - - if (tdb_flags & TDB_CLEAR_IF_FIRST) { - /* we need to zero the database if we are the only - one with it open */ - if (tdb_brlock(&tdb, ACTIVE_LOCK, LOCK_SET, F_WRLCK, F_SETLK) == 0) { - ftruncate(tdb.fd, 0); - tdb_brlock(&tdb, ACTIVE_LOCK, LOCK_CLEAR, F_WRLCK, F_SETLK); - } - } - - /* leave this lock in place */ - tdb_brlock(&tdb, ACTIVE_LOCK, LOCK_SET, F_RDLCK, F_SETLKW); - - if (read(tdb.fd, &tdb.header, sizeof(tdb.header)) != sizeof(tdb.header) || - strcmp(tdb.header.magic_food, TDB_MAGIC_FOOD) != 0 || - tdb.header.version != TDB_VERSION) { - /* its not a valid database - possibly initialise it */ - if (!(open_flags & O_CREAT)) { - goto fail; - } - if (tdb_new_database(&tdb, hash_size) == -1) goto fail; - - lseek(tdb.fd, 0, SEEK_SET); - if (tdb.fd != -1 && read(tdb.fd, &tdb.header, - sizeof(tdb.header)) != - sizeof(tdb.header)) - goto fail; - } - - if (tdb.fd != -1) { - fstat(tdb.fd, &st); - - /* map the database and fill in the return structure */ - tdb.name = (char *)strdup(name); - tdb.map_size = st.st_size; - } - - tdb.locked = (int *)calloc(tdb.header.hash_size+1, - sizeof(tdb.locked[0])); - if (!tdb.locked) { - goto fail; - } - -#if HAVE_MMAP - if (tdb.fd != -1) { - tdb.map_ptr = (void *)mmap(NULL, st.st_size, - tdb.read_only? PROT_READ : PROT_READ|PROT_WRITE, - MAP_SHARED | MAP_FILE, tdb.fd, 0); - } -#endif - - ret = (TDB_CONTEXT *)malloc(sizeof(tdb)); - if (!ret) goto fail; - - *ret = tdb; - -#if TDB_DEBUG - printf("mapped database of hash_size %u map_size=%u\n", - hash_size, tdb.map_size); -#endif - - tdb_brlock(&tdb, GLOBAL_LOCK, LOCK_CLEAR, F_WRLCK, F_SETLKW); - return ret; - - fail: - if (tdb.name) free(tdb.name); - if (tdb.fd != -1) close(tdb.fd); - if (tdb.map_ptr) munmap(tdb.map_ptr, tdb.map_size); - - return NULL; -} - -/* close a database */ -int tdb_close(TDB_CONTEXT *tdb) -{ - if (!tdb) return -1; - - if (tdb->name) free(tdb->name); - if (tdb->fd != -1) close(tdb->fd); - if (tdb->locked) free(tdb->locked); - - if (tdb->map_ptr) { - if (tdb->fd != -1) { - munmap(tdb->map_ptr, tdb->map_size); - } else { - free(tdb->map_ptr); - } - } - - memset(tdb, 0, sizeof(*tdb)); - free(tdb); - - return 0; -} - -/* lock the database. If we already have it locked then don't do anything */ -int tdb_writelock(TDB_CONTEXT *tdb) -{ - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_writelock() called with null context\n"); -#endif - return -1; - } - - return tdb_lock(tdb, -1); -} - -/* unlock the database. */ -int tdb_writeunlock(TDB_CONTEXT *tdb) -{ - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_writeunlock() called with null context\n"); -#endif - return -1; - } - - return tdb_unlock(tdb, -1); -} - -/* lock one hash chain. This is meant to be used to reduce locking - contention - it cannot guarantee how many records will be locked */ -int tdb_lockchain(TDB_CONTEXT *tdb, TDB_DATA key) -{ - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_lockchain() called with null context\n"); -#endif - return -1; - } - - return tdb_lock(tdb, BUCKET(tdb_hash(&key))); -} - - -/* unlock one hash chain */ -int tdb_unlockchain(TDB_CONTEXT *tdb, TDB_DATA key) -{ - if (tdb == NULL) { -#ifdef TDB_DEBUG - printf("tdb_unlockchain() called with null context\n"); -#endif - return -1; - } - - return tdb_unlock(tdb, BUCKET(tdb_hash(&key))); -} diff --git a/mdk-stage1/ppp/pppd/tdb.h b/mdk-stage1/ppp/pppd/tdb.h deleted file mode 100644 index 56ae0ac2a..000000000 --- a/mdk-stage1/ppp/pppd/tdb.h +++ /dev/null @@ -1,77 +0,0 @@ -#define STANDALONE 1 -/* - * Database functions - * Copyright (C) Andrew Tridgell 1999 - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms AND provided that this software or - * any derived work is only used as part of the PPP daemon (pppd) - * and related utilities. - * The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * Note: this software is also available under the Gnu Public License - * version 2 or later. - */ - -typedef unsigned tdb_len; -typedef unsigned tdb_off; - -#define TDB_MAGIC_FOOD "TDB file\n" - -/* this is stored at the front of every database */ -struct tdb_header { - char magic_food[32]; /* for /etc/magic */ - unsigned version; /* version of the code */ - unsigned hash_size; /* number of hash entries */ -}; - -typedef struct { - char *dptr; - size_t dsize; -} TDB_DATA; - -/* this is the context structure that is returned from a db open */ -typedef struct { - char *name; /* the name of the database */ - void *map_ptr; /* where it is currently mapped */ - int fd; /* open file descriptor for the database */ - tdb_len map_size; /* how much space has been mapped */ - int read_only; /* opened read-only */ - int *locked; /* set if we have a chain locked */ - int ecode; /* error code for last tdb error */ - struct tdb_header header; /* a cached copy of the header */ -} TDB_CONTEXT; - -/* flags to tdb_store() */ -#define TDB_REPLACE 1 -#define TDB_INSERT 2 - -/* flags for tdb_open() */ -#define TDB_CLEAR_IF_FIRST 1 - -/* error codes */ -enum TDB_ERROR {TDB_SUCCESS=0, TDB_ERR_CORRUPT, TDB_ERR_IO, TDB_ERR_LOCK, - TDB_ERR_OOM, TDB_ERR_EXISTS}; - -#if STANDALONE -TDB_CONTEXT *tdb_open(char *name, int hash_size, int tdb_flags, - int open_flags, mode_t mode); -char *tdb_error(TDB_CONTEXT *tdb); -int tdb_writelock(TDB_CONTEXT *tdb); -int tdb_writeunlock(TDB_CONTEXT *tdb); -TDB_DATA tdb_fetch(TDB_CONTEXT *tdb, TDB_DATA key); -int tdb_delete(TDB_CONTEXT *tdb, TDB_DATA key); -int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag); -int tdb_close(TDB_CONTEXT *tdb); -TDB_DATA tdb_firstkey(TDB_CONTEXT *tdb); -TDB_DATA tdb_nextkey(TDB_CONTEXT *tdb, TDB_DATA key); -int tdb_traverse(TDB_CONTEXT *tdb, - int (*fn)(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state), - void *state); -int tdb_exists(TDB_CONTEXT *tdb, TDB_DATA key); -#endif diff --git a/mdk-stage1/ppp/pppd/tty.c b/mdk-stage1/ppp/pppd/tty.c deleted file mode 100644 index 4db707968..000000000 --- a/mdk-stage1/ppp/pppd/tty.c +++ /dev/null @@ -1,1164 +0,0 @@ -/* - * tty.c - code for handling serial ports in pppd. - * - * Copyright (C) 2000 Paul Mackerras. - * All rights reserved. - * - * Portions Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <signal.h> -#include <errno.h> -#include <fcntl.h> -#include <syslog.h> -#include <netdb.h> -#include <utmp.h> -#include <pwd.h> -#include <setjmp.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <sys/time.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> - -#include "pppd.h" -#include "fsm.h" -#include "lcp.h" - -void tty_process_extra_options __P((void)); -void tty_check_options __P((void)); -int connect_tty __P((void)); -void disconnect_tty __P((void)); -void tty_close_fds __P((void)); -void cleanup_tty __P((void)); -void tty_do_send_config __P((int, u_int32_t, int, int)); - -static int setdevname __P((char *, char **, int)); -static int setspeed __P((char *, char **, int)); -static int setxonxoff __P((char **)); -static int setescape __P((char **)); -static void printescape __P((option_t *, void (*)(void *, char *,...),void *)); -static void finish_tty __P((void)); -static int start_charshunt __P((int, int)); -static void stop_charshunt __P((void *, int)); -static void charshunt_done __P((void *)); -static void charshunt __P((int, int, char *)); -static int record_write __P((FILE *, int code, u_char *buf, int nb, - struct timeval *)); -static int open_socket __P((char *)); -static void maybe_relock __P((void *, int)); - -static int pty_master; /* fd for master side of pty */ -static int pty_slave; /* fd for slave side of pty */ -static int real_ttyfd; /* fd for actual serial port (not pty) */ -static int ttyfd; /* Serial port file descriptor */ -static char speed_str[16]; /* Serial port speed as string */ - -mode_t tty_mode = (mode_t)-1; /* Original access permissions to tty */ -int baud_rate; /* Actual bits/second for serial device */ -char *callback_script; /* script for doing callback */ -int charshunt_pid; /* Process ID for charshunt */ -int locked; /* lock() has succeeded */ -struct stat devstat; /* result of stat() on devnam */ - -/* option variables */ -int crtscts = 0; /* Use hardware flow control */ -bool modem = 1; /* Use modem control lines */ -int inspeed = 0; /* Input/Output speed requested */ -bool lockflag = 0; /* Create lock file to lock the serial dev */ -char *initializer = NULL; /* Script to initialize physical link */ -char *connect_script = NULL; /* Script to establish physical link */ -char *disconnect_script = NULL; /* Script to disestablish physical link */ -char *welcomer = NULL; /* Script to run after phys link estab. */ -char *ptycommand = NULL; /* Command to run on other side of pty */ -bool notty = 0; /* Stdin/out is not a tty */ -char *record_file = NULL; /* File to record chars sent/received */ -int max_data_rate; /* max bytes/sec through charshunt */ -bool sync_serial = 0; /* Device is synchronous serial device */ -char *pty_socket = NULL; /* Socket to connect to pty */ -int using_pty = 0; /* we're allocating a pty as the device */ - -extern uid_t uid; -extern int kill_link; - -/* XXX */ -extern int privopen; /* don't lock, open device as root */ - -u_int32_t xmit_accm[8]; /* extended transmit ACCM */ - -/* option descriptors */ -option_t tty_options[] = { - /* device name must be first, or change connect_tty() below! */ - { "device name", o_wild, (void *) &setdevname, - "Serial port device name", - OPT_DEVNAM | OPT_PRIVFIX | OPT_NOARG | OPT_A2STRVAL | OPT_STATIC, - devnam}, - - { "tty speed", o_wild, (void *) &setspeed, - "Baud rate for serial port", - OPT_PRIO | OPT_NOARG | OPT_A2STRVAL | OPT_STATIC, speed_str }, - - { "lock", o_bool, &lockflag, - "Lock serial device with UUCP-style lock file", OPT_PRIO | 1 }, - { "nolock", o_bool, &lockflag, - "Don't lock serial device", OPT_PRIOSUB | OPT_PRIV }, - - { "init", o_string, &initializer, - "A program to initialize the device", OPT_PRIO | OPT_PRIVFIX }, - - { "connect", o_string, &connect_script, - "A program to set up a connection", OPT_PRIO | OPT_PRIVFIX }, - - { "disconnect", o_string, &disconnect_script, - "Program to disconnect serial device", OPT_PRIO | OPT_PRIVFIX }, - - { "welcome", o_string, &welcomer, - "Script to welcome client", OPT_PRIO | OPT_PRIVFIX }, - - { "pty", o_string, &ptycommand, - "Script to run on pseudo-tty master side", - OPT_PRIO | OPT_PRIVFIX | OPT_DEVNAM }, - - { "notty", o_bool, ¬ty, - "Input/output is not a tty", OPT_DEVNAM | 1 }, - - { "socket", o_string, &pty_socket, - "Send and receive over socket, arg is host:port", - OPT_PRIO | OPT_DEVNAM }, - - { "record", o_string, &record_file, - "Record characters sent/received to file", OPT_PRIO }, - - { "crtscts", o_int, &crtscts, - "Set hardware (RTS/CTS) flow control", - OPT_PRIO | OPT_NOARG | OPT_VAL(1) }, - { "cdtrcts", o_int, &crtscts, - "Set alternate hardware (DTR/CTS) flow control", - OPT_PRIOSUB | OPT_NOARG | OPT_VAL(2) }, - { "nocrtscts", o_int, &crtscts, - "Disable hardware flow control", - OPT_PRIOSUB | OPT_NOARG | OPT_VAL(-1) }, - { "-crtscts", o_int, &crtscts, - "Disable hardware flow control", - OPT_PRIOSUB | OPT_ALIAS | OPT_NOARG | OPT_VAL(-1) }, - { "nocdtrcts", o_int, &crtscts, - "Disable hardware flow control", - OPT_PRIOSUB | OPT_ALIAS | OPT_NOARG | OPT_VAL(-1) }, - { "xonxoff", o_special_noarg, (void *)setxonxoff, - "Set software (XON/XOFF) flow control", OPT_PRIOSUB }, - - { "modem", o_bool, &modem, - "Use modem control lines", OPT_PRIO | 1 }, - { "local", o_bool, &modem, - "Don't use modem control lines", OPT_PRIOSUB | 0 }, - - { "sync", o_bool, &sync_serial, - "Use synchronous HDLC serial encoding", 1 }, - - { "datarate", o_int, &max_data_rate, - "Maximum data rate in bytes/sec (with pty, notty or record option)", - OPT_PRIO }, - - { "escape", o_special, (void *)setescape, - "List of character codes to escape on transmission", - OPT_A2PRINTER, (void *)printescape }, - - { NULL } -}; - - -struct channel tty_channel = { - tty_options, - &tty_process_extra_options, - &tty_check_options, - &connect_tty, - &disconnect_tty, - &tty_establish_ppp, - &tty_disestablish_ppp, - &tty_do_send_config, - &tty_recv_config, - &cleanup_tty, - &tty_close_fds -}; - -/* - * setspeed - Set the serial port baud rate. - * If doit is 0, the call is to check whether this option is - * potentially a speed value. - */ -static int -setspeed(arg, argv, doit) - char *arg; - char **argv; - int doit; -{ - char *ptr; - int spd; - - spd = strtol(arg, &ptr, 0); - if (ptr == arg || *ptr != 0 || spd == 0) - return 0; - if (doit) { - inspeed = spd; - slprintf(speed_str, sizeof(speed_str), "%d", spd); - } - return 1; -} - - -/* - * setdevname - Set the device name. - * If doit is 0, the call is to check whether this option is - * potentially a device name. - */ -static int -setdevname(cp, argv, doit) - char *cp; - char **argv; - int doit; -{ - struct stat statbuf; - char dev[MAXPATHLEN]; - - if (*cp == 0) - return 0; - - if (strncmp("/dev/", cp, 5) != 0) { - strlcpy(dev, "/dev/", sizeof(dev)); - strlcat(dev, cp, sizeof(dev)); - cp = dev; - } - - /* - * Check if there is a character device by this name. - */ - if (stat(cp, &statbuf) < 0) { - if (!doit) - return errno != ENOENT; - option_error("Couldn't stat %s: %m", cp); - return 0; - } - if (!S_ISCHR(statbuf.st_mode)) { - if (doit) - option_error("%s is not a character device", cp); - return 0; - } - - if (doit) { - strlcpy(devnam, cp, sizeof(devnam)); - devstat = statbuf; - default_device = 0; - } - - return 1; -} - -static int -setxonxoff(argv) - char **argv; -{ - lcp_wantoptions[0].asyncmap |= 0x000A0000; /* escape ^S and ^Q */ - lcp_wantoptions[0].neg_asyncmap = 1; - - crtscts = -2; - return 1; -} - -/* - * setescape - add chars to the set we escape on transmission. - */ -static int -setescape(argv) - char **argv; -{ - int n, ret; - char *p, *endp; - - p = *argv; - ret = 1; - while (*p) { - n = strtol(p, &endp, 16); - if (p == endp) { - option_error("escape parameter contains invalid hex number '%s'", - p); - return 0; - } - p = endp; - if (n < 0 || n == 0x5E || n > 0xFF) { - option_error("can't escape character 0x%x", n); - ret = 0; - } else - xmit_accm[n >> 5] |= 1 << (n & 0x1F); - while (*p == ',' || *p == ' ') - ++p; - } - lcp_allowoptions[0].asyncmap = xmit_accm[0]; - return ret; -} - -static void -printescape(opt, printer, arg) - option_t *opt; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int n; - int first = 1; - - for (n = 0; n < 256; ++n) { - if (n == 0x7d) - n += 2; /* skip 7d, 7e */ - if (xmit_accm[n >> 5] & (1 << (n & 0x1f))) { - if (!first) - printer(arg, ","); - else - first = 0; - printer(arg, "%x", n); - } - } - if (first) - printer(arg, "oops # nothing escaped"); -} - -/* - * tty_init - do various tty-related initializations. - */ -void tty_init() -{ - add_notifier(&pidchange, maybe_relock, 0); - the_channel = &tty_channel; - xmit_accm[3] = 0x60000000; -} - -/* - * tty_process_extra_options - work out which tty device we are using - * and read its options file. - */ -void tty_process_extra_options() -{ - using_pty = notty || ptycommand != NULL || pty_socket != NULL; - if (using_pty) - return; - if (default_device) { - char *p; - if (!isatty(0) || (p = ttyname(0)) == NULL) { - option_error("no device specified and stdin is not a tty"); - exit(EXIT_OPTION_ERROR); - } - strlcpy(devnam, p, sizeof(devnam)); - if (stat(devnam, &devstat) < 0) - fatal("Couldn't stat default device %s: %m", devnam); - } - - - /* - * Parse the tty options file. - * The per-tty options file should not change - * ptycommand, pty_socket, notty or devnam. - * options_for_tty doesn't override options set on the command line, - * except for some privileged options. - */ - if (!options_for_tty()) - exit(EXIT_OPTION_ERROR); -} - -/* - * tty_check_options - do consistency checks on the options we were given. - */ -void -tty_check_options() -{ - struct stat statbuf; - int fdflags; - - if (demand && connect_script == 0) { - option_error("connect script is required for demand-dialling\n"); - exit(EXIT_OPTION_ERROR); - } - /* default holdoff to 0 if no connect script has been given */ - if (connect_script == 0 && !holdoff_specified) - holdoff = 0; - - if (using_pty) { - if (!default_device) { - option_error("%s option precludes specifying device name", - notty? "notty": "pty"); - exit(EXIT_OPTION_ERROR); - } - if (ptycommand != NULL && notty) { - option_error("pty option is incompatible with notty option"); - exit(EXIT_OPTION_ERROR); - } - if (pty_socket != NULL && (ptycommand != NULL || notty)) { - option_error("socket option is incompatible with pty and notty"); - exit(EXIT_OPTION_ERROR); - } - default_device = notty; - lockflag = 0; - modem = 0; - if (notty && log_to_fd <= 1) - log_to_fd = -1; - } else { - /* - * If the user has specified a device which is the same as - * the one on stdin, pretend they didn't specify any. - * If the device is already open read/write on stdin, - * we assume we don't need to lock it, and we can open it - * as root. - */ - if (fstat(0, &statbuf) >= 0 && S_ISCHR(statbuf.st_mode) - && statbuf.st_rdev == devstat.st_rdev) { - default_device = 1; - fdflags = fcntl(0, F_GETFL); - if (fdflags != -1 && (fdflags & O_ACCMODE) == O_RDWR) - privopen = 1; - } - } - if (default_device) - nodetach = 1; - - /* - * Don't send log messages to the serial port, it tends to - * confuse the peer. :-) - */ - if (log_to_fd >= 0 && fstat(log_to_fd, &statbuf) >= 0 - && S_ISCHR(statbuf.st_mode) && statbuf.st_rdev == devstat.st_rdev) - log_to_fd = -1; -} - -/* - * connect_tty - get the serial port ready to start doing PPP. - * That is, open the serial port, set its speed and mode, and run - * the connector and/or welcomer. - */ -int connect_tty() -{ - char *connector; - int fdflags; - struct stat statbuf; - char numbuf[16]; - - /* - * Get a pty master/slave pair if the pty, notty, socket, - * or record options were specified. - */ - strlcpy(ppp_devnam, devnam, sizeof(ppp_devnam)); - pty_master = -1; - pty_slave = -1; - real_ttyfd = -1; - if (using_pty || record_file != NULL) { - if (!get_pty(&pty_master, &pty_slave, ppp_devnam, uid)) { - error("Couldn't allocate pseudo-tty"); - status = EXIT_FATAL_ERROR; - return -1; - } - set_up_tty(pty_slave, 1); - } - - /* - * Lock the device if we've been asked to. - */ - status = EXIT_LOCK_FAILED; - if (lockflag && !privopen) { - if (lock(devnam) < 0) - return -1; - locked = 1; - } - - /* - * Open the serial device and set it up to be the ppp interface. - * First we open it in non-blocking mode so we can set the - * various termios flags appropriately. If we aren't dialling - * out and we want to use the modem lines, we reopen it later - * in order to wait for the carrier detect signal from the modem. - */ - hungup = 0; - kill_link = 0; - connector = doing_callback? callback_script: connect_script; - if (devnam[0] != 0) { - for (;;) { - /* If the user specified the device name, become the - user before opening it. */ - int err, prio; - - prio = privopen? OPRIO_ROOT: tty_options[0].priority; - if (prio < OPRIO_ROOT) - seteuid(uid); - ttyfd = open(devnam, O_NONBLOCK | O_RDWR, 0); - err = errno; - if (prio < OPRIO_ROOT) - seteuid(0); - if (ttyfd >= 0) - break; - errno = err; - if (err != EINTR) { - error("Failed to open %s: %m", devnam); - status = EXIT_OPEN_FAILED; - } - if (!persist || err != EINTR) - return -1; - } - real_ttyfd = ttyfd; - if ((fdflags = fcntl(ttyfd, F_GETFL)) == -1 - || fcntl(ttyfd, F_SETFL, fdflags & ~O_NONBLOCK) < 0) - warn("Couldn't reset non-blocking mode on device: %m"); - - /* - * Do the equivalent of `mesg n' to stop broadcast messages. - */ - if (fstat(ttyfd, &statbuf) < 0 - || fchmod(ttyfd, statbuf.st_mode & ~(S_IWGRP | S_IWOTH)) < 0) { - warn("Couldn't restrict write permissions to %s: %m", devnam); - } else - tty_mode = statbuf.st_mode; - - /* - * Set line speed, flow control, etc. - * If we have a non-null connection or initializer script, - * on most systems we set CLOCAL for now so that we can talk - * to the modem before carrier comes up. But this has the - * side effect that we might miss it if CD drops before we - * get to clear CLOCAL below. On systems where we can talk - * successfully to the modem with CLOCAL clear and CD down, - * we could clear CLOCAL at this point. - */ - set_up_tty(ttyfd, ((connector != NULL && connector[0] != 0) - || initializer != NULL)); - } - - /* - * If the pty, socket, notty and/or record option was specified, - * start up the character shunt now. - */ - status = EXIT_PTYCMD_FAILED; - if (ptycommand != NULL) { - if (record_file != NULL) { - int ipipe[2], opipe[2], ok; - - if (pipe(ipipe) < 0 || pipe(opipe) < 0) - fatal("Couldn't create pipes for record option: %m"); - ok = device_script(ptycommand, opipe[0], ipipe[1], 1) == 0 - && start_charshunt(ipipe[0], opipe[1]); - close(ipipe[0]); - close(ipipe[1]); - close(opipe[0]); - close(opipe[1]); - if (!ok) - return -1; - } else { - if (device_script(ptycommand, pty_master, pty_master, 1) < 0) - return -1; - ttyfd = pty_slave; - close(pty_master); - pty_master = -1; - } - } else if (pty_socket != NULL) { - int fd = open_socket(pty_socket); - if (fd < 0) - return -1; - if (!start_charshunt(fd, fd)) - return -1; - } else if (notty) { - if (!start_charshunt(0, 1)) - return -1; - } else if (record_file != NULL) { - if (!start_charshunt(ttyfd, ttyfd)) - return -1; - } - - /* run connection script */ - if ((connector && connector[0]) || initializer) { - if (real_ttyfd != -1) { - /* XXX do this if doing_callback == CALLBACK_DIALIN? */ - if (!default_device && modem) { - setdtr(real_ttyfd, 0); /* in case modem is off hook */ - sleep(1); - setdtr(real_ttyfd, 1); - } - } - - if (initializer && initializer[0]) { - if (device_script(initializer, ttyfd, ttyfd, 0) < 0) { - error("Initializer script failed"); - status = EXIT_INIT_FAILED; - return -1; - } - if (kill_link) { - disconnect_tty(); - return -1; - } - info("Serial port initialized."); - } - - if (connector && connector[0]) { - if (device_script(connector, ttyfd, ttyfd, 0) < 0) { - error("Connect script failed"); - status = EXIT_CONNECT_FAILED; - return -1; - } - if (kill_link) { - disconnect_tty(); - return -1; - } - info("Serial connection established."); - } - - /* set line speed, flow control, etc.; - clear CLOCAL if modem option */ - if (real_ttyfd != -1) - set_up_tty(real_ttyfd, 0); - - if (doing_callback == CALLBACK_DIALIN) - connector = NULL; - } - - /* reopen tty if necessary to wait for carrier */ - if (connector == NULL && modem && devnam[0] != 0) { - int i; - for (;;) { - if ((i = open(devnam, O_RDWR)) >= 0) - break; - if (errno != EINTR) { - error("Failed to reopen %s: %m", devnam); - status = EXIT_OPEN_FAILED; - } - if (!persist || errno != EINTR || hungup || kill_link) - return -1; - } - close(i); - } - - slprintf(numbuf, sizeof(numbuf), "%d", baud_rate); - script_setenv("SPEED", numbuf, 0); - - /* run welcome script, if any */ - if (welcomer && welcomer[0]) { - if (device_script(welcomer, ttyfd, ttyfd, 0) < 0) - warn("Welcome script failed"); - } - - /* - * If we are initiating this connection, wait for a short - * time for something from the peer. This can avoid bouncing - * our packets off his tty before he has it set up. - */ - if (connector != NULL || ptycommand != NULL) - listen_time = connect_delay; - - return ttyfd; -} - - -void disconnect_tty() -{ - if (disconnect_script == NULL || hungup) - return; - if (real_ttyfd >= 0) - set_up_tty(real_ttyfd, 1); - if (device_script(disconnect_script, ttyfd, ttyfd, 0) < 0) { - warn("disconnect script failed"); - } else { - info("Serial link disconnected."); - } -} - -void tty_close_fds() -{ - if (pty_master >= 0) - close(pty_master); - if (pty_slave >= 0) - close(pty_slave); - if (real_ttyfd >= 0) { - close(real_ttyfd); - real_ttyfd = -1; - } - /* N.B. ttyfd will == either pty_slave or real_ttyfd */ -} - -void cleanup_tty() -{ - if (real_ttyfd >= 0) - finish_tty(); - tty_close_fds(); - if (locked) { - unlock(); - locked = 0; - } -} - -/* - * tty_do_send_config - set transmit-side PPP configuration. - * We set the extended transmit ACCM here as well. - */ -void -tty_do_send_config(mtu, accm, pcomp, accomp) - int mtu; - u_int32_t accm; - int pcomp, accomp; -{ - tty_set_xaccm(xmit_accm); - tty_send_config(mtu, accm, pcomp, accomp); -} - -/* - * finish_tty - restore the terminal device to its original settings - */ -static void -finish_tty() -{ - /* drop dtr to hang up */ - if (!default_device && modem) { - setdtr(real_ttyfd, 0); - /* - * This sleep is in case the serial port has CLOCAL set by default, - * and consequently will reassert DTR when we close the device. - */ - sleep(1); - } - - restore_tty(real_ttyfd); - - if (tty_mode != (mode_t) -1) { - if (fchmod(real_ttyfd, tty_mode) != 0) { - /* XXX if devnam is a symlink, this will change the link */ - chmod(devnam, tty_mode); - } - } - - close(real_ttyfd); - real_ttyfd = -1; -} - -/* - * maybe_relock - our PID has changed, maybe update the lock file. - */ -static void -maybe_relock(arg, pid) - void *arg; - int pid; -{ - if (locked) - relock(pid); -} - -/* - * open_socket - establish a stream socket connection to the nominated - * host and port. - */ -static int -open_socket(dest) - char *dest; -{ - char *sep, *endp = NULL; - int sock, port = -1; - u_int32_t host; - struct hostent *hent; - struct sockaddr_in sad; - - /* parse host:port and resolve host to an IP address */ - sep = strchr(dest, ':'); - if (sep != NULL) - port = strtol(sep+1, &endp, 10); - if (port < 0 || endp == sep+1 || sep == dest) { - error("Can't parse host:port for socket destination"); - return -1; - } - *sep = 0; - host = inet_addr(dest); - if (host == (u_int32_t) -1) { - hent = gethostbyname(dest); - if (hent == NULL) { - error("%s: unknown host in socket option", dest); - *sep = ':'; - return -1; - } - host = *(u_int32_t *)(hent->h_addr_list[0]); - } - *sep = ':'; - - /* get a socket and connect it to the other end */ - sock = socket(PF_INET, SOCK_STREAM, 0); - if (sock < 0) { - error("Can't create socket: %m"); - return -1; - } - memset(&sad, 0, sizeof(sad)); - sad.sin_family = AF_INET; - sad.sin_port = htons(port); - sad.sin_addr.s_addr = host; - if (connect(sock, (struct sockaddr *)&sad, sizeof(sad)) < 0) { - error("Can't connect to %s: %m", dest); - close(sock); - return -1; - } - - return sock; -} - - -/* - * start_charshunt - create a child process to run the character shunt. - */ -static int -start_charshunt(ifd, ofd) - int ifd, ofd; -{ - int cpid; - - cpid = fork(); - if (cpid == -1) { - error("Can't fork process for character shunt: %m"); - return 0; - } - if (cpid == 0) { - /* child */ - close(pty_slave); - setuid(uid); - if (getuid() != uid) - fatal("setuid failed"); - setgid(getgid()); - if (!nodetach) - log_to_fd = -1; - charshunt(ifd, ofd, record_file); - exit(0); - } - charshunt_pid = cpid; - add_notifier(&sigreceived, stop_charshunt, 0); - close(pty_master); - pty_master = -1; - ttyfd = pty_slave; - record_child(cpid, "pppd (charshunt)", charshunt_done, NULL); - return 1; -} - -static void -charshunt_done(arg) - void *arg; -{ - charshunt_pid = 0; -} - -static void -stop_charshunt(arg, sig) - void *arg; - int sig; -{ - if (charshunt_pid) - kill(charshunt_pid, (sig == SIGINT? sig: SIGTERM)); -} - -/* - * charshunt - the character shunt, which passes characters between - * the pty master side and the serial port (or stdin/stdout). - * This runs as the user (not as root). - * (We assume ofd >= ifd which is true the way this gets called. :-). - */ -static void -charshunt(ifd, ofd, record_file) - int ifd, ofd; - char *record_file; -{ - int n, nfds; - fd_set ready, writey; - u_char *ibufp, *obufp; - int nibuf, nobuf; - int flags; - int pty_readable, stdin_readable; - struct timeval lasttime; - FILE *recordf = NULL; - int ilevel, olevel, max_level; - struct timeval levelt, tout, *top; - extern u_char inpacket_buf[]; - - /* - * Reset signal handlers. - */ - signal(SIGHUP, SIG_IGN); /* Hangup */ - signal(SIGINT, SIG_DFL); /* Interrupt */ - signal(SIGTERM, SIG_DFL); /* Terminate */ - signal(SIGCHLD, SIG_DFL); - signal(SIGUSR1, SIG_DFL); - signal(SIGUSR2, SIG_DFL); - signal(SIGABRT, SIG_DFL); - signal(SIGALRM, SIG_DFL); - signal(SIGFPE, SIG_DFL); - signal(SIGILL, SIG_DFL); - signal(SIGPIPE, SIG_DFL); - signal(SIGQUIT, SIG_DFL); - signal(SIGSEGV, SIG_DFL); -#ifdef SIGBUS - signal(SIGBUS, SIG_DFL); -#endif -#ifdef SIGEMT - signal(SIGEMT, SIG_DFL); -#endif -#ifdef SIGPOLL - signal(SIGPOLL, SIG_DFL); -#endif -#ifdef SIGPROF - signal(SIGPROF, SIG_DFL); -#endif -#ifdef SIGSYS - signal(SIGSYS, SIG_DFL); -#endif -#ifdef SIGTRAP - signal(SIGTRAP, SIG_DFL); -#endif -#ifdef SIGVTALRM - signal(SIGVTALRM, SIG_DFL); -#endif -#ifdef SIGXCPU - signal(SIGXCPU, SIG_DFL); -#endif -#ifdef SIGXFSZ - signal(SIGXFSZ, SIG_DFL); -#endif - - /* - * Open the record file if required. - */ - if (record_file != NULL) { - recordf = fopen(record_file, "a"); - if (recordf == NULL) - error("Couldn't create record file %s: %m", record_file); - } - - /* set all the fds to non-blocking mode */ - flags = fcntl(pty_master, F_GETFL); - if (flags == -1 - || fcntl(pty_master, F_SETFL, flags | O_NONBLOCK) == -1) - warn("couldn't set pty master to nonblock: %m"); - flags = fcntl(ifd, F_GETFL); - if (flags == -1 - || fcntl(ifd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("couldn't set %s to nonblock: %m", (ifd==0? "stdin": "tty")); - if (ofd != ifd) { - flags = fcntl(ofd, F_GETFL); - if (flags == -1 - || fcntl(ofd, F_SETFL, flags | O_NONBLOCK) == -1) - warn("couldn't set stdout to nonblock: %m"); - } - - nibuf = nobuf = 0; - ibufp = obufp = NULL; - pty_readable = stdin_readable = 1; - - ilevel = olevel = 0; - gettimeofday(&levelt, NULL); - if (max_data_rate) { - max_level = max_data_rate / 10; - if (max_level < 100) - max_level = 100; - } else - max_level = PPP_MRU + PPP_HDRLEN + 1; - - nfds = (ofd > pty_master? ofd: pty_master) + 1; - if (recordf != NULL) { - gettimeofday(&lasttime, NULL); - putc(7, recordf); /* put start marker */ - putc(lasttime.tv_sec >> 24, recordf); - putc(lasttime.tv_sec >> 16, recordf); - putc(lasttime.tv_sec >> 8, recordf); - putc(lasttime.tv_sec, recordf); - lasttime.tv_usec = 0; - } - - while (nibuf != 0 || nobuf != 0 || pty_readable || stdin_readable) { - top = 0; - tout.tv_sec = 0; - tout.tv_usec = 10000; - FD_ZERO(&ready); - FD_ZERO(&writey); - if (nibuf != 0) { - if (ilevel >= max_level) - top = &tout; - else - FD_SET(pty_master, &writey); - } else if (stdin_readable) - FD_SET(ifd, &ready); - if (nobuf != 0) { - if (olevel >= max_level) - top = &tout; - else - FD_SET(ofd, &writey); - } else if (pty_readable) - FD_SET(pty_master, &ready); - if (select(nfds, &ready, &writey, NULL, top) < 0) { - if (errno != EINTR) - fatal("select"); - continue; - } - if (max_data_rate) { - double dt; - int nbt; - struct timeval now; - - gettimeofday(&now, NULL); - dt = (now.tv_sec - levelt.tv_sec - + (now.tv_usec - levelt.tv_usec) / 1e6); - nbt = (int)(dt * max_data_rate); - ilevel = (nbt < 0 || nbt > ilevel)? 0: ilevel - nbt; - olevel = (nbt < 0 || nbt > olevel)? 0: olevel - nbt; - levelt = now; - } else - ilevel = olevel = 0; - if (FD_ISSET(ifd, &ready)) { - ibufp = inpacket_buf; - nibuf = read(ifd, ibufp, PPP_MRU + PPP_HDRLEN); - if (nibuf < 0 && errno == EIO) - nibuf = 0; - if (nibuf < 0) { - if (!(errno == EINTR || errno == EAGAIN)) { - error("Error reading standard input: %m"); - break; - } - nibuf = 0; - } else if (nibuf == 0) { - /* end of file from stdin */ - stdin_readable = 0; - /* do a 0-length write, hopefully this will generate - an EOF (hangup) on the slave side. */ - write(pty_master, inpacket_buf, 0); - if (recordf) - if (!record_write(recordf, 4, NULL, 0, &lasttime)) - recordf = NULL; - } else { - FD_SET(pty_master, &writey); - if (recordf) - if (!record_write(recordf, 2, ibufp, nibuf, &lasttime)) - recordf = NULL; - } - } - if (FD_ISSET(pty_master, &ready)) { - obufp = outpacket_buf; - nobuf = read(pty_master, obufp, PPP_MRU + PPP_HDRLEN); - if (nobuf < 0 && errno == EIO) - nobuf = 0; - if (nobuf < 0) { - if (!(errno == EINTR || errno == EAGAIN)) { - error("Error reading pseudo-tty master: %m"); - break; - } - nobuf = 0; - } else if (nobuf == 0) { - /* end of file from the pty - slave side has closed */ - pty_readable = 0; - stdin_readable = 0; /* pty is not writable now */ - nibuf = 0; - close(ofd); - if (recordf) - if (!record_write(recordf, 3, NULL, 0, &lasttime)) - recordf = NULL; - } else { - FD_SET(ofd, &writey); - if (recordf) - if (!record_write(recordf, 1, obufp, nobuf, &lasttime)) - recordf = NULL; - } - } - if (FD_ISSET(ofd, &writey)) { - n = nobuf; - if (olevel + n > max_level) - n = max_level - olevel; - n = write(ofd, obufp, n); - if (n < 0) { - if (errno == EIO) { - pty_readable = 0; - nobuf = 0; - } else if (errno != EAGAIN && errno != EINTR) { - error("Error writing standard output: %m"); - break; - } - } else { - obufp += n; - nobuf -= n; - olevel += n; - } - } - if (FD_ISSET(pty_master, &writey)) { - n = nibuf; - if (ilevel + n > max_level) - n = max_level - ilevel; - n = write(pty_master, ibufp, n); - if (n < 0) { - if (errno == EIO) { - stdin_readable = 0; - nibuf = 0; - } else if (errno != EAGAIN && errno != EINTR) { - error("Error writing pseudo-tty master: %m"); - break; - } - } else { - ibufp += n; - nibuf -= n; - ilevel += n; - } - } - } - exit(0); -} - -static int -record_write(f, code, buf, nb, tp) - FILE *f; - int code; - u_char *buf; - int nb; - struct timeval *tp; -{ - struct timeval now; - int diff; - - gettimeofday(&now, NULL); - now.tv_usec /= 100000; /* actually 1/10 s, not usec now */ - diff = (now.tv_sec - tp->tv_sec) * 10 + (now.tv_usec - tp->tv_usec); - if (diff > 0) { - if (diff > 255) { - putc(5, f); - putc(diff >> 24, f); - putc(diff >> 16, f); - putc(diff >> 8, f); - putc(diff, f); - } else { - putc(6, f); - putc(diff, f); - } - *tp = now; - } - putc(code, f); - if (buf != NULL) { - putc(nb >> 8, f); - putc(nb, f); - fwrite(buf, nb, 1, f); - } - fflush(f); - if (ferror(f)) { - error("Error writing record file: %m"); - return 0; - } - return 1; -} diff --git a/mdk-stage1/ppp/pppd/upap.c b/mdk-stage1/ppp/pppd/upap.c deleted file mode 100644 index bd569fb74..000000000 --- a/mdk-stage1/ppp/pppd/upap.c +++ /dev/null @@ -1,640 +0,0 @@ -/* - * upap.c - User/Password Authentication Protocol. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -/* - * TODO: - */ - -#include <stdio.h> -#include <string.h> - -#include "pppd.h" -#include "upap.h" - -static const char rcsid[] = RCSID; - -static bool hide_password = 1; - -/* - * Command-line options. - */ -static option_t pap_option_list[] = { - { "hide-password", o_bool, &hide_password, - "Don't output passwords to log", OPT_PRIO | 1 }, - { "show-password", o_bool, &hide_password, - "Show password string in debug log messages", OPT_PRIOSUB | 0 }, - - { "pap-restart", o_int, &upap[0].us_timeouttime, - "Set retransmit timeout for PAP", OPT_PRIO }, - { "pap-max-authreq", o_int, &upap[0].us_maxtransmits, - "Set max number of transmissions for auth-reqs", OPT_PRIO }, - { "pap-timeout", o_int, &upap[0].us_reqtimeout, - "Set time limit for peer PAP authentication", OPT_PRIO }, - - { NULL } -}; - -/* - * Protocol entry points. - */ -static void upap_init __P((int)); -static void upap_lowerup __P((int)); -static void upap_lowerdown __P((int)); -static void upap_input __P((int, u_char *, int)); -static void upap_protrej __P((int)); -static int upap_printpkt __P((u_char *, int, - void (*) __P((void *, char *, ...)), void *)); - -struct protent pap_protent = { - PPP_PAP, - upap_init, - upap_input, - upap_protrej, - upap_lowerup, - upap_lowerdown, - NULL, - NULL, - upap_printpkt, - NULL, - 1, - "PAP", - NULL, - pap_option_list, - NULL, - NULL, - NULL -}; - -upap_state upap[NUM_PPP]; /* UPAP state; one for each unit */ - -static void upap_timeout __P((void *)); -static void upap_reqtimeout __P((void *)); -static void upap_rauthreq __P((upap_state *, u_char *, int, int)); -static void upap_rauthack __P((upap_state *, u_char *, int, int)); -static void upap_rauthnak __P((upap_state *, u_char *, int, int)); -static void upap_sauthreq __P((upap_state *)); -static void upap_sresp __P((upap_state *, int, int, char *, int)); - - -/* - * upap_init - Initialize a UPAP unit. - */ -static void -upap_init(unit) - int unit; -{ - upap_state *u = &upap[unit]; - - u->us_unit = unit; - u->us_user = NULL; - u->us_userlen = 0; - u->us_passwd = NULL; - u->us_passwdlen = 0; - u->us_clientstate = UPAPCS_INITIAL; - u->us_serverstate = UPAPSS_INITIAL; - u->us_id = 0; - u->us_timeouttime = UPAP_DEFTIMEOUT; - u->us_maxtransmits = 10; - u->us_reqtimeout = UPAP_DEFREQTIME; -} - - -/* - * upap_authwithpeer - Authenticate us with our peer (start client). - * - * Set new state and send authenticate's. - */ -void -upap_authwithpeer(unit, user, password) - int unit; - char *user, *password; -{ - upap_state *u = &upap[unit]; - - /* Save the username and password we're given */ - u->us_user = user; - u->us_userlen = strlen(user); - u->us_passwd = password; - u->us_passwdlen = strlen(password); - u->us_transmits = 0; - - /* Lower layer up yet? */ - if (u->us_clientstate == UPAPCS_INITIAL || - u->us_clientstate == UPAPCS_PENDING) { - u->us_clientstate = UPAPCS_PENDING; - return; - } - - upap_sauthreq(u); /* Start protocol */ -} - - -/* - * upap_authpeer - Authenticate our peer (start server). - * - * Set new state. - */ -void -upap_authpeer(unit) - int unit; -{ - upap_state *u = &upap[unit]; - - /* Lower layer up yet? */ - if (u->us_serverstate == UPAPSS_INITIAL || - u->us_serverstate == UPAPSS_PENDING) { - u->us_serverstate = UPAPSS_PENDING; - return; - } - - u->us_serverstate = UPAPSS_LISTEN; - if (u->us_reqtimeout > 0) - TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout); -} - - -/* - * upap_timeout - Retransmission timer for sending auth-reqs expired. - */ -static void -upap_timeout(arg) - void *arg; -{ - upap_state *u = (upap_state *) arg; - - if (u->us_clientstate != UPAPCS_AUTHREQ) - return; - - if (u->us_transmits >= u->us_maxtransmits) { - /* give up in disgust */ - error("No response to PAP authenticate-requests"); - u->us_clientstate = UPAPCS_BADAUTH; - auth_withpeer_fail(u->us_unit, PPP_PAP); - return; - } - - upap_sauthreq(u); /* Send Authenticate-Request */ -} - - -/* - * upap_reqtimeout - Give up waiting for the peer to send an auth-req. - */ -static void -upap_reqtimeout(arg) - void *arg; -{ - upap_state *u = (upap_state *) arg; - - if (u->us_serverstate != UPAPSS_LISTEN) - return; /* huh?? */ - - auth_peer_fail(u->us_unit, PPP_PAP); - u->us_serverstate = UPAPSS_BADAUTH; -} - - -/* - * upap_lowerup - The lower layer is up. - * - * Start authenticating if pending. - */ -static void -upap_lowerup(unit) - int unit; -{ - upap_state *u = &upap[unit]; - - if (u->us_clientstate == UPAPCS_INITIAL) - u->us_clientstate = UPAPCS_CLOSED; - else if (u->us_clientstate == UPAPCS_PENDING) { - upap_sauthreq(u); /* send an auth-request */ - } - - if (u->us_serverstate == UPAPSS_INITIAL) - u->us_serverstate = UPAPSS_CLOSED; - else if (u->us_serverstate == UPAPSS_PENDING) { - u->us_serverstate = UPAPSS_LISTEN; - if (u->us_reqtimeout > 0) - TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout); - } -} - - -/* - * upap_lowerdown - The lower layer is down. - * - * Cancel all timeouts. - */ -static void -upap_lowerdown(unit) - int unit; -{ - upap_state *u = &upap[unit]; - - if (u->us_clientstate == UPAPCS_AUTHREQ) /* Timeout pending? */ - UNTIMEOUT(upap_timeout, u); /* Cancel timeout */ - if (u->us_serverstate == UPAPSS_LISTEN && u->us_reqtimeout > 0) - UNTIMEOUT(upap_reqtimeout, u); - - u->us_clientstate = UPAPCS_INITIAL; - u->us_serverstate = UPAPSS_INITIAL; -} - - -/* - * upap_protrej - Peer doesn't speak this protocol. - * - * This shouldn't happen. In any case, pretend lower layer went down. - */ -static void -upap_protrej(unit) - int unit; -{ - upap_state *u = &upap[unit]; - - if (u->us_clientstate == UPAPCS_AUTHREQ) { - error("PAP authentication failed due to protocol-reject"); - auth_withpeer_fail(unit, PPP_PAP); - } - if (u->us_serverstate == UPAPSS_LISTEN) { - error("PAP authentication of peer failed (protocol-reject)"); - auth_peer_fail(unit, PPP_PAP); - } - upap_lowerdown(unit); -} - - -/* - * upap_input - Input UPAP packet. - */ -static void -upap_input(unit, inpacket, l) - int unit; - u_char *inpacket; - int l; -{ - upap_state *u = &upap[unit]; - u_char *inp; - u_char code, id; - int len; - - /* - * Parse header (code, id and length). - * If packet too short, drop it. - */ - inp = inpacket; - if (l < UPAP_HEADERLEN) { - UPAPDEBUG(("pap_input: rcvd short header.")); - return; - } - GETCHAR(code, inp); - GETCHAR(id, inp); - GETSHORT(len, inp); - if (len < UPAP_HEADERLEN) { - UPAPDEBUG(("pap_input: rcvd illegal length.")); - return; - } - if (len > l) { - UPAPDEBUG(("pap_input: rcvd short packet.")); - return; - } - len -= UPAP_HEADERLEN; - - /* - * Action depends on code. - */ - switch (code) { - case UPAP_AUTHREQ: - upap_rauthreq(u, inp, id, len); - break; - - case UPAP_AUTHACK: - upap_rauthack(u, inp, id, len); - break; - - case UPAP_AUTHNAK: - upap_rauthnak(u, inp, id, len); - break; - - default: /* XXX Need code reject */ - break; - } -} - - -/* - * upap_rauth - Receive Authenticate. - */ -static void -upap_rauthreq(u, inp, id, len) - upap_state *u; - u_char *inp; - int id; - int len; -{ - u_char ruserlen, rpasswdlen; - char *ruser, *rpasswd; - int retcode; - char *msg; - int msglen; - - if (u->us_serverstate < UPAPSS_LISTEN) - return; - - /* - * If we receive a duplicate authenticate-request, we are - * supposed to return the same status as for the first request. - */ - if (u->us_serverstate == UPAPSS_OPEN) { - upap_sresp(u, UPAP_AUTHACK, id, "", 0); /* return auth-ack */ - return; - } - if (u->us_serverstate == UPAPSS_BADAUTH) { - upap_sresp(u, UPAP_AUTHNAK, id, "", 0); /* return auth-nak */ - return; - } - - /* - * Parse user/passwd. - */ - if (len < 1) { - UPAPDEBUG(("pap_rauth: rcvd short packet.")); - return; - } - GETCHAR(ruserlen, inp); - len -= sizeof (u_char) + ruserlen + sizeof (u_char); - if (len < 0) { - UPAPDEBUG(("pap_rauth: rcvd short packet.")); - return; - } - ruser = (char *) inp; - INCPTR(ruserlen, inp); - GETCHAR(rpasswdlen, inp); - if (len < rpasswdlen) { - UPAPDEBUG(("pap_rauth: rcvd short packet.")); - return; - } - rpasswd = (char *) inp; - - /* - * Check the username and password given. - */ - retcode = check_passwd(u->us_unit, ruser, ruserlen, rpasswd, - rpasswdlen, &msg); - BZERO(rpasswd, rpasswdlen); - msglen = strlen(msg); - if (msglen > 255) - msglen = 255; - - upap_sresp(u, retcode, id, msg, msglen); - - if (retcode == UPAP_AUTHACK) { - u->us_serverstate = UPAPSS_OPEN; - auth_peer_success(u->us_unit, PPP_PAP, ruser, ruserlen); - } else { - u->us_serverstate = UPAPSS_BADAUTH; - auth_peer_fail(u->us_unit, PPP_PAP); - } - - if (u->us_reqtimeout > 0) - UNTIMEOUT(upap_reqtimeout, u); -} - - -/* - * upap_rauthack - Receive Authenticate-Ack. - */ -static void -upap_rauthack(u, inp, id, len) - upap_state *u; - u_char *inp; - int id; - int len; -{ - u_char msglen; - char *msg; - - if (u->us_clientstate != UPAPCS_AUTHREQ) /* XXX */ - return; - - /* - * Parse message. - */ - if (len < 1) { - UPAPDEBUG(("pap_rauthack: ignoring missing msg-length.")); - } else { - GETCHAR(msglen, inp); - if (msglen > 0) { - len -= sizeof (u_char); - if (len < msglen) { - UPAPDEBUG(("pap_rauthack: rcvd short packet.")); - return; - } - msg = (char *) inp; - PRINTMSG(msg, msglen); - } - } - - u->us_clientstate = UPAPCS_OPEN; - - auth_withpeer_success(u->us_unit, PPP_PAP); -} - - -/* - * upap_rauthnak - Receive Authenticate-Nakk. - */ -static void -upap_rauthnak(u, inp, id, len) - upap_state *u; - u_char *inp; - int id; - int len; -{ - u_char msglen; - char *msg; - - if (u->us_clientstate != UPAPCS_AUTHREQ) /* XXX */ - return; - - /* - * Parse message. - */ - if (len < 1) { - UPAPDEBUG(("pap_rauthnak: ignoring missing msg-length.")); - } else { - GETCHAR(msglen, inp); - if (msglen > 0) { - len -= sizeof (u_char); - if (len < msglen) { - UPAPDEBUG(("pap_rauthnak: rcvd short packet.")); - return; - } - msg = (char *) inp; - PRINTMSG(msg, msglen); - } - } - - u->us_clientstate = UPAPCS_BADAUTH; - - error("PAP authentication failed"); - auth_withpeer_fail(u->us_unit, PPP_PAP); -} - - -/* - * upap_sauthreq - Send an Authenticate-Request. - */ -static void -upap_sauthreq(u) - upap_state *u; -{ - u_char *outp; - int outlen; - - outlen = UPAP_HEADERLEN + 2 * sizeof (u_char) + - u->us_userlen + u->us_passwdlen; - outp = outpacket_buf; - - MAKEHEADER(outp, PPP_PAP); - - PUTCHAR(UPAP_AUTHREQ, outp); - PUTCHAR(++u->us_id, outp); - PUTSHORT(outlen, outp); - PUTCHAR(u->us_userlen, outp); - BCOPY(u->us_user, outp, u->us_userlen); - INCPTR(u->us_userlen, outp); - PUTCHAR(u->us_passwdlen, outp); - BCOPY(u->us_passwd, outp, u->us_passwdlen); - - output(u->us_unit, outpacket_buf, outlen + PPP_HDRLEN); - - TIMEOUT(upap_timeout, u, u->us_timeouttime); - ++u->us_transmits; - u->us_clientstate = UPAPCS_AUTHREQ; -} - - -/* - * upap_sresp - Send a response (ack or nak). - */ -static void -upap_sresp(u, code, id, msg, msglen) - upap_state *u; - u_char code, id; - char *msg; - int msglen; -{ - u_char *outp; - int outlen; - - outlen = UPAP_HEADERLEN + sizeof (u_char) + msglen; - outp = outpacket_buf; - MAKEHEADER(outp, PPP_PAP); - - PUTCHAR(code, outp); - PUTCHAR(id, outp); - PUTSHORT(outlen, outp); - PUTCHAR(msglen, outp); - BCOPY(msg, outp, msglen); - output(u->us_unit, outpacket_buf, outlen + PPP_HDRLEN); -} - -/* - * upap_printpkt - print the contents of a PAP packet. - */ -static char *upap_codenames[] = { - "AuthReq", "AuthAck", "AuthNak" -}; - -static int -upap_printpkt(p, plen, printer, arg) - u_char *p; - int plen; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int code, id, len; - int mlen, ulen, wlen; - char *user, *pwd, *msg; - u_char *pstart; - - if (plen < UPAP_HEADERLEN) - return 0; - pstart = p; - GETCHAR(code, p); - GETCHAR(id, p); - GETSHORT(len, p); - if (len < UPAP_HEADERLEN || len > plen) - return 0; - - if (code >= 1 && code <= sizeof(upap_codenames) / sizeof(char *)) - printer(arg, " %s", upap_codenames[code-1]); - else - printer(arg, " code=0x%x", code); - printer(arg, " id=0x%x", id); - len -= UPAP_HEADERLEN; - switch (code) { - case UPAP_AUTHREQ: - if (len < 1) - break; - ulen = p[0]; - if (len < ulen + 2) - break; - wlen = p[ulen + 1]; - if (len < ulen + wlen + 2) - break; - user = (char *) (p + 1); - pwd = (char *) (p + ulen + 2); - p += ulen + wlen + 2; - len -= ulen + wlen + 2; - printer(arg, " user="); - print_string(user, ulen, printer, arg); - printer(arg, " password="); - if (!hide_password) - print_string(pwd, wlen, printer, arg); - else - printer(arg, "<hidden>"); - break; - case UPAP_AUTHACK: - case UPAP_AUTHNAK: - if (len < 1) - break; - mlen = p[0]; - if (len < mlen + 1) - break; - msg = (char *) (p + 1); - p += mlen + 1; - len -= mlen + 1; - printer(arg, " "); - print_string(msg, mlen, printer, arg); - break; - } - - /* print the rest of the bytes in the packet */ - for (; len > 0; --len) { - GETCHAR(code, p); - printer(arg, " %.2x", code); - } - - return p - pstart; -} diff --git a/mdk-stage1/ppp/pppd/upap.h b/mdk-stage1/ppp/pppd/upap.h deleted file mode 100644 index 42d6f4f0f..000000000 --- a/mdk-stage1/ppp/pppd/upap.h +++ /dev/null @@ -1,87 +0,0 @@ -/* - * upap.h - User/Password Authentication Protocol definitions. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * $Id$ - */ - -/* - * Packet header = Code, id, length. - */ -#define UPAP_HEADERLEN 4 - - -/* - * UPAP codes. - */ -#define UPAP_AUTHREQ 1 /* Authenticate-Request */ -#define UPAP_AUTHACK 2 /* Authenticate-Ack */ -#define UPAP_AUTHNAK 3 /* Authenticate-Nak */ - - -/* - * Each interface is described by upap structure. - */ -typedef struct upap_state { - int us_unit; /* Interface unit number */ - char *us_user; /* User */ - int us_userlen; /* User length */ - char *us_passwd; /* Password */ - int us_passwdlen; /* Password length */ - int us_clientstate; /* Client state */ - int us_serverstate; /* Server state */ - u_char us_id; /* Current id */ - int us_timeouttime; /* Timeout (seconds) for auth-req retrans. */ - int us_transmits; /* Number of auth-reqs sent */ - int us_maxtransmits; /* Maximum number of auth-reqs to send */ - int us_reqtimeout; /* Time to wait for auth-req from peer */ -} upap_state; - - -/* - * Client states. - */ -#define UPAPCS_INITIAL 0 /* Connection down */ -#define UPAPCS_CLOSED 1 /* Connection up, haven't requested auth */ -#define UPAPCS_PENDING 2 /* Connection down, have requested auth */ -#define UPAPCS_AUTHREQ 3 /* We've sent an Authenticate-Request */ -#define UPAPCS_OPEN 4 /* We've received an Ack */ -#define UPAPCS_BADAUTH 5 /* We've received a Nak */ - -/* - * Server states. - */ -#define UPAPSS_INITIAL 0 /* Connection down */ -#define UPAPSS_CLOSED 1 /* Connection up, haven't requested auth */ -#define UPAPSS_PENDING 2 /* Connection down, have requested auth */ -#define UPAPSS_LISTEN 3 /* Listening for an Authenticate */ -#define UPAPSS_OPEN 4 /* We've sent an Ack */ -#define UPAPSS_BADAUTH 5 /* We've sent a Nak */ - - -/* - * Timeouts. - */ -#define UPAP_DEFTIMEOUT 3 /* Timeout (seconds) for retransmitting req */ -#define UPAP_DEFREQTIME 30 /* Time to wait for auth-req from peer */ - -extern upap_state upap[]; - -void upap_authwithpeer __P((int, char *, char *)); -void upap_authpeer __P((int)); - -extern struct protent pap_protent; diff --git a/mdk-stage1/ppp/pppd/utils.c b/mdk-stage1/ppp/pppd/utils.c deleted file mode 100644 index 9c987cfcd..000000000 --- a/mdk-stage1/ppp/pppd/utils.c +++ /dev/null @@ -1,949 +0,0 @@ -/* - * utils.c - various utility functions used in pppd. - * - * Copyright (c) 1999 The Australian National University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the Australian National University. The name of the University - * may not be used to endorse or promote products derived from this - * software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#define RCSID "$Id$" - -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <signal.h> -#include <errno.h> -#include <fcntl.h> -#include <syslog.h> -#include <netdb.h> -#include <utmp.h> -#include <pwd.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <sys/time.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <sys/socket.h> -#include <netinet/in.h> -#ifdef SVR4 -#include <sys/mkdev.h> -#endif - -#include "pppd.h" -#include <time.h> - -static const char rcsid[] = RCSID; - -#if defined(SUNOS4) -extern char *strerror(); -#endif - -static void logit __P((int, char *, va_list)); -static void log_write __P((int, char *)); -static void vslp_printer __P((void *, char *, ...)); -static void format_packet __P((u_char *, int, void (*) (void *, char *, ...), - void *)); - -struct buffer_info { - char *ptr; - int len; -}; - -/* - * strlcpy - like strcpy/strncpy, doesn't overflow destination buffer, - * always leaves destination null-terminated (for len > 0). - */ -size_t -strlcpy(dest, src, len) - char *dest; - const char *src; - size_t len; -{ - size_t ret = strlen(src); - - if (len != 0) { - if (ret < len) - strcpy(dest, src); - else { - strncpy(dest, src, len - 1); - dest[len-1] = 0; - } - } - return ret; -} - -/* - * strlcat - like strcat/strncat, doesn't overflow destination buffer, - * always leaves destination null-terminated (for len > 0). - */ -size_t -strlcat(dest, src, len) - char *dest; - const char *src; - size_t len; -{ - size_t dlen = strlen(dest); - - return dlen + strlcpy(dest + dlen, src, (len > dlen? len - dlen: 0)); -} - - -/* - * slprintf - format a message into a buffer. Like sprintf except we - * also specify the length of the output buffer, and we handle - * %r (recursive format), %m (error message), %v (visible string), - * %q (quoted string), %t (current time) and %I (IP address) formats. - * Doesn't do floating-point formats. - * Returns the number of chars put into buf. - */ -int -slprintf __V((char *buf, int buflen, char *fmt, ...)) -{ - va_list args; - int n; - -#if defined(__STDC__) - va_start(args, fmt); -#else - char *buf; - int buflen; - char *fmt; - va_start(args); - buf = va_arg(args, char *); - buflen = va_arg(args, int); - fmt = va_arg(args, char *); -#endif - n = vslprintf(buf, buflen, fmt, args); - va_end(args); - return n; -} - -/* - * vslprintf - like slprintf, takes a va_list instead of a list of args. - */ -#define OUTCHAR(c) (buflen > 0? (--buflen, *buf++ = (c)): 0) - -int -vslprintf(buf, buflen, fmt, args) - char *buf; - int buflen; - char *fmt; - va_list args; -{ - int c, i, n; - int width, prec, fillch; - int base, len, neg, quoted; - unsigned long val = 0; - char *str, *f, *buf0; - unsigned char *p; - char num[32]; - time_t t; - u_int32_t ip; - static char hexchars[] = "0123456789abcdef"; - struct buffer_info bufinfo; - - buf0 = buf; - --buflen; - while (buflen > 0) { - for (f = fmt; *f != '%' && *f != 0; ++f) - ; - if (f > fmt) { - len = f - fmt; - if (len > buflen) - len = buflen; - memcpy(buf, fmt, len); - buf += len; - buflen -= len; - fmt = f; - } - if (*fmt == 0) - break; - c = *++fmt; - width = 0; - prec = -1; - fillch = ' '; - if (c == '0') { - fillch = '0'; - c = *++fmt; - } - if (c == '*') { - width = va_arg(args, int); - c = *++fmt; - } else { - while (isdigit(c)) { - width = width * 10 + c - '0'; - c = *++fmt; - } - } - if (c == '.') { - c = *++fmt; - if (c == '*') { - prec = va_arg(args, int); - c = *++fmt; - } else { - prec = 0; - while (isdigit(c)) { - prec = prec * 10 + c - '0'; - c = *++fmt; - } - } - } - str = 0; - base = 0; - neg = 0; - ++fmt; - switch (c) { - case 'd': - i = va_arg(args, int); - if (i < 0) { - neg = 1; - val = -i; - } else - val = i; - base = 10; - break; - case 'u': - val = va_arg(args, unsigned int); - base = 10; - break; - case 'o': - val = va_arg(args, unsigned int); - base = 8; - break; - case 'x': - case 'X': - val = va_arg(args, unsigned int); - base = 16; - break; - case 'p': - val = (unsigned long) va_arg(args, void *); - base = 16; - neg = 2; - break; - case 's': - str = va_arg(args, char *); - break; - case 'c': - num[0] = va_arg(args, int); - num[1] = 0; - str = num; - break; - case 'm': - str = strerror(errno); - break; - case 'I': - ip = va_arg(args, u_int32_t); - ip = ntohl(ip); - slprintf(num, sizeof(num), "%d.%d.%d.%d", (ip >> 24) & 0xff, - (ip >> 16) & 0xff, (ip >> 8) & 0xff, ip & 0xff); - str = num; - break; - case 'r': - f = va_arg(args, char *); -#ifndef __powerpc__ - n = vslprintf(buf, buflen + 1, f, va_arg(args, va_list)); -#else - /* On the powerpc, a va_list is an array of 1 structure */ - n = vslprintf(buf, buflen + 1, f, va_arg(args, void *)); -#endif - buf += n; - buflen -= n; - continue; - case 't': - time(&t); - str = ctime(&t); - str += 4; /* chop off the day name */ - str[15] = 0; /* chop off year and newline */ - break; - case 'v': /* "visible" string */ - case 'q': /* quoted string */ - quoted = c == 'q'; - p = va_arg(args, unsigned char *); - if (fillch == '0' && prec >= 0) { - n = prec; - } else { - n = strlen((char *)p); - if (prec >= 0 && n > prec) - n = prec; - } - while (n > 0 && buflen > 0) { - c = *p++; - --n; - if (!quoted && c >= 0x80) { - OUTCHAR('M'); - OUTCHAR('-'); - c -= 0x80; - } - if (quoted && (c == '"' || c == '\\')) - OUTCHAR('\\'); - if (c < 0x20 || (0x7f <= c && c < 0xa0)) { - if (quoted) { - OUTCHAR('\\'); - switch (c) { - case '\t': OUTCHAR('t'); break; - case '\n': OUTCHAR('n'); break; - case '\b': OUTCHAR('b'); break; - case '\f': OUTCHAR('f'); break; - default: - OUTCHAR('x'); - OUTCHAR(hexchars[c >> 4]); - OUTCHAR(hexchars[c & 0xf]); - } - } else { - if (c == '\t') - OUTCHAR(c); - else { - OUTCHAR('^'); - OUTCHAR(c ^ 0x40); - } - } - } else - OUTCHAR(c); - } - continue; - case 'P': /* print PPP packet */ - bufinfo.ptr = buf; - bufinfo.len = buflen + 1; - p = va_arg(args, unsigned char *); - n = va_arg(args, int); - format_packet(p, n, vslp_printer, &bufinfo); - buf = bufinfo.ptr; - buflen = bufinfo.len - 1; - continue; - case 'B': - p = va_arg(args, unsigned char *); - for (n = prec; n > 0; --n) { - c = *p++; - if (fillch == ' ') - OUTCHAR(' '); - OUTCHAR(hexchars[(c >> 4) & 0xf]); - OUTCHAR(hexchars[c & 0xf]); - } - continue; - default: - *buf++ = '%'; - if (c != '%') - --fmt; /* so %z outputs %z etc. */ - --buflen; - continue; - } - if (base != 0) { - str = num + sizeof(num); - *--str = 0; - while (str > num + neg) { - *--str = hexchars[val % base]; - val = val / base; - if (--prec <= 0 && val == 0) - break; - } - switch (neg) { - case 1: - *--str = '-'; - break; - case 2: - *--str = 'x'; - *--str = '0'; - break; - } - len = num + sizeof(num) - 1 - str; - } else { - len = strlen(str); - if (prec >= 0 && len > prec) - len = prec; - } - if (width > 0) { - if (width > buflen) - width = buflen; - if ((n = width - len) > 0) { - buflen -= n; - for (; n > 0; --n) - *buf++ = fillch; - } - } - if (len > buflen) - len = buflen; - memcpy(buf, str, len); - buf += len; - buflen -= len; - } - *buf = 0; - return buf - buf0; -} - -/* - * vslp_printer - used in processing a %P format - */ -static void -vslp_printer __V((void *arg, char *fmt, ...)) -{ - int n; - va_list pvar; - struct buffer_info *bi; - -#if defined(__STDC__) - va_start(pvar, fmt); -#else - void *arg; - char *fmt; - va_start(pvar); - arg = va_arg(pvar, void *); - fmt = va_arg(pvar, char *); -#endif - - bi = (struct buffer_info *) arg; - n = vslprintf(bi->ptr, bi->len, fmt, pvar); - va_end(pvar); - - bi->ptr += n; - bi->len -= n; -} - -#ifdef unused -/* - * log_packet - format a packet and log it. - */ - -void -log_packet(p, len, prefix, level) - u_char *p; - int len; - char *prefix; - int level; -{ - init_pr_log(prefix, level); - format_packet(p, len, pr_log, &level); - end_pr_log(); -} -#endif /* unused */ - -/* - * format_packet - make a readable representation of a packet, - * calling `printer(arg, format, ...)' to output it. - */ -static void -format_packet(p, len, printer, arg) - u_char *p; - int len; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int i, n; - u_short proto; - struct protent *protp; - - if (len >= PPP_HDRLEN && p[0] == PPP_ALLSTATIONS && p[1] == PPP_UI) { - p += 2; - GETSHORT(proto, p); - len -= PPP_HDRLEN; - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (proto == protp->protocol) - break; - if (protp != NULL) { - printer(arg, "[%s", protp->name); - n = (*protp->printpkt)(p, len, printer, arg); - printer(arg, "]"); - p += n; - len -= n; - } else { - for (i = 0; (protp = protocols[i]) != NULL; ++i) - if (proto == (protp->protocol & ~0x8000)) - break; - if (protp != 0 && protp->data_name != 0) { - printer(arg, "[%s data]", protp->data_name); - if (len > 8) - printer(arg, "%.8B ...", p); - else - printer(arg, "%.*B", len, p); - len = 0; - } else - printer(arg, "[proto=0x%x]", proto); - } - } - - if (len > 32) - printer(arg, "%.32B ...", p); - else - printer(arg, "%.*B", len, p); -} - -/* - * init_pr_log, end_pr_log - initialize and finish use of pr_log. - */ - -static char line[256]; /* line to be logged accumulated here */ -static char *linep; /* current pointer within line */ -static int llevel; /* level for logging */ - -void -init_pr_log(prefix, level) - char *prefix; - int level; -{ - linep = line; - if (prefix != NULL) { - strlcpy(line, prefix, sizeof(line)); - linep = line + strlen(line); - } - llevel = level; -} - -void -end_pr_log() -{ - if (linep != line) { - *linep = 0; - log_write(llevel, line); - } -} - -/* - * pr_log - printer routine for outputting to syslog - */ -void -pr_log __V((void *arg, char *fmt, ...)) -{ - int l, n; - va_list pvar; - char *p, *eol; - char buf[256]; - -#if defined(__STDC__) - va_start(pvar, fmt); -#else - void *arg; - char *fmt; - va_start(pvar); - arg = va_arg(pvar, void *); - fmt = va_arg(pvar, char *); -#endif - - n = vslprintf(buf, sizeof(buf), fmt, pvar); - va_end(pvar); - - p = buf; - eol = strchr(buf, '\n'); - if (linep != line) { - l = (eol == NULL)? n: eol - buf; - if (linep + l < line + sizeof(line)) { - if (l > 0) { - memcpy(linep, buf, l); - linep += l; - } - if (eol == NULL) - return; - p = eol + 1; - eol = strchr(p, '\n'); - } - *linep = 0; - log_write(llevel, line); - linep = line; - } - - while (eol != NULL) { - *eol = 0; - log_write(llevel, p); - p = eol + 1; - eol = strchr(p, '\n'); - } - - /* assumes sizeof(buf) <= sizeof(line) */ - l = buf + n - p; - if (l > 0) { - memcpy(line, p, n); - linep = line + l; - } -} - -/* - * print_string - print a readable representation of a string using - * printer. - */ -void -print_string(p, len, printer, arg) - char *p; - int len; - void (*printer) __P((void *, char *, ...)); - void *arg; -{ - int c; - - printer(arg, "\""); - for (; len > 0; --len) { - c = *p++; - if (' ' <= c && c <= '~') { - if (c == '\\' || c == '"') - printer(arg, "\\"); - printer(arg, "%c", c); - } else { - switch (c) { - case '\n': - printer(arg, "\\n"); - break; - case '\r': - printer(arg, "\\r"); - break; - case '\t': - printer(arg, "\\t"); - break; - default: - printer(arg, "\\%.3o", c); - } - } - } - printer(arg, "\""); -} - -/* - * logit - does the hard work for fatal et al. - */ -static void -logit(level, fmt, args) - int level; - char *fmt; - va_list args; -{ - int n; - char buf[1024]; - - n = vslprintf(buf, sizeof(buf), fmt, args); - log_write(level, buf); -} - -static void -log_write(level, buf) - int level; - char *buf; -{ - syslog(level, "%s", buf); - if (log_to_fd >= 0 && (level != LOG_DEBUG || debug)) { - int n = strlen(buf); - - if (n > 0 && buf[n-1] == '\n') - --n; - if (write(log_to_fd, buf, n) != n - || write(log_to_fd, "\n", 1) != 1) - log_to_fd = -1; - } -} - -/* - * fatal - log an error message and die horribly. - */ -void -fatal __V((char *fmt, ...)) -{ - va_list pvar; - -#if defined(__STDC__) - va_start(pvar, fmt); -#else - char *fmt; - va_start(pvar); - fmt = va_arg(pvar, char *); -#endif - - logit(LOG_ERR, fmt, pvar); - va_end(pvar); - - die(1); /* as promised */ -} - -/* - * error - log an error message. - */ -void -error __V((char *fmt, ...)) -{ - va_list pvar; - -#if defined(__STDC__) - va_start(pvar, fmt); -#else - char *fmt; - va_start(pvar); - fmt = va_arg(pvar, char *); -#endif - - logit(LOG_ERR, fmt, pvar); - va_end(pvar); -} - -/* - * warn - log a warning message. - */ -void -warn __V((char *fmt, ...)) -{ - va_list pvar; - -#if defined(__STDC__) - va_start(pvar, fmt); -#else - char *fmt; - va_start(pvar); - fmt = va_arg(pvar, char *); -#endif - - logit(LOG_WARNING, fmt, pvar); - va_end(pvar); -} - -/* - * notice - log a notice-level message. - */ -void -notice __V((char *fmt, ...)) -{ - va_list pvar; - -#if defined(__STDC__) - va_start(pvar, fmt); -#else - char *fmt; - va_start(pvar); - fmt = va_arg(pvar, char *); -#endif - - logit(LOG_NOTICE, fmt, pvar); - va_end(pvar); -} - -/* - * info - log an informational message. - */ -void -info __V((char *fmt, ...)) -{ - va_list pvar; - -#if defined(__STDC__) - va_start(pvar, fmt); -#else - char *fmt; - va_start(pvar); - fmt = va_arg(pvar, char *); -#endif - - logit(LOG_INFO, fmt, pvar); - va_end(pvar); -} - -/* - * dbglog - log a debug message. - */ -void -dbglog __V((char *fmt, ...)) -{ - va_list pvar; - -#if defined(__STDC__) - va_start(pvar, fmt); -#else - char *fmt; - va_start(pvar); - fmt = va_arg(pvar, char *); -#endif - - logit(LOG_DEBUG, fmt, pvar); - va_end(pvar); -} - -/* Procedures for locking the serial device using a lock file. */ -#ifndef LOCK_DIR -#ifdef _linux_ -#define LOCK_DIR "/var/lock" -#else -#ifdef SVR4 -#define LOCK_DIR "/var/spool/locks" -#else -#define LOCK_DIR "/var/spool/lock" -#endif -#endif -#endif /* LOCK_DIR */ - -static char lock_file[MAXPATHLEN]; - -/* - * lock - create a lock file for the named device - */ -int -lock(dev) - char *dev; -{ -#ifdef LOCKLIB - int result; - - result = mklock (dev, (void *) 0); - if (result == 0) { - strlcpy(lock_file, sizeof(lock_file), dev); - return 0; - } - - if (result > 0) - notice("Device %s is locked by pid %d", dev, result); - else - error("Can't create lock file %s", lock_file); - return -1; - -#else /* LOCKLIB */ - - char lock_buffer[12]; - int fd, pid, n; - -#ifdef SVR4 - struct stat sbuf; - - if (stat(dev, &sbuf) < 0) { - error("Can't get device number for %s: %m", dev); - return -1; - } - if ((sbuf.st_mode & S_IFMT) != S_IFCHR) { - error("Can't lock %s: not a character device", dev); - return -1; - } - slprintf(lock_file, sizeof(lock_file), "%s/LK.%03d.%03d.%03d", - LOCK_DIR, major(sbuf.st_dev), - major(sbuf.st_rdev), minor(sbuf.st_rdev)); -#else - char *p; - - if ((p = strrchr(dev, '/')) != NULL) - dev = p + 1; - slprintf(lock_file, sizeof(lock_file), "%s/LCK..%s", LOCK_DIR, dev); -#endif - - while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) { - if (errno != EEXIST) { - error("Can't create lock file %s: %m", lock_file); - break; - } - - /* Read the lock file to find out who has the device locked. */ - fd = open(lock_file, O_RDONLY, 0); - if (fd < 0) { - if (errno == ENOENT) /* This is just a timing problem. */ - continue; - error("Can't open existing lock file %s: %m", lock_file); - break; - } -#ifndef LOCK_BINARY - n = read(fd, lock_buffer, 11); -#else - n = read(fd, &pid, sizeof(pid)); -#endif /* LOCK_BINARY */ - close(fd); - fd = -1; - if (n <= 0) { - error("Can't read pid from lock file %s", lock_file); - break; - } - - /* See if the process still exists. */ -#ifndef LOCK_BINARY - lock_buffer[n] = 0; - pid = atoi(lock_buffer); -#endif /* LOCK_BINARY */ - if (pid == getpid()) - return 1; /* somebody else locked it for us */ - if (pid == 0 - || (kill(pid, 0) == -1 && errno == ESRCH)) { - if (unlink (lock_file) == 0) { - notice("Removed stale lock on %s (pid %d)", dev, pid); - continue; - } - warn("Couldn't remove stale lock on %s", dev); - } else - notice("Device %s is locked by pid %d", dev, pid); - break; - } - - if (fd < 0) { - lock_file[0] = 0; - return -1; - } - - pid = getpid(); -#ifndef LOCK_BINARY - slprintf(lock_buffer, sizeof(lock_buffer), "%10d\n", pid); - write (fd, lock_buffer, 11); -#else - write(fd, &pid, sizeof (pid)); -#endif - close(fd); - return 0; - -#endif -} - -/* - * relock - called to update our lockfile when we are about to detach, - * thus changing our pid (we fork, the child carries on, and the parent dies). - * Note that this is called by the parent, with pid equal to the pid - * of the child. This avoids a potential race which would exist if - * we had the child rewrite the lockfile (the parent might die first, - * and another process could think the lock was stale if it checked - * between when the parent died and the child rewrote the lockfile). - */ -int -relock(pid) - int pid; -{ -#ifdef LOCKLIB - /* XXX is there a way to do this? */ - return -1; -#else /* LOCKLIB */ - - int fd; - char lock_buffer[12]; - - if (lock_file[0] == 0) - return -1; - fd = open(lock_file, O_WRONLY, 0); - if (fd < 0) { - error("Couldn't reopen lock file %s: %m", lock_file); - lock_file[0] = 0; - return -1; - } - -#ifndef LOCK_BINARY - slprintf(lock_buffer, sizeof(lock_buffer), "%10d\n", pid); - write (fd, lock_buffer, 11); -#else - write(fd, &pid, sizeof(pid)); -#endif /* LOCK_BINARY */ - close(fd); - return 0; - -#endif /* LOCKLIB */ -} - -/* - * unlock - remove our lockfile - */ -void -unlock() -{ - if (lock_file[0]) { -#ifdef LOCKLIB - (void) rmlock(lock_file, (void *) 0); -#else - unlink(lock_file); -#endif - lock_file[0] = 0; - } -} - |