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-rw-r--r--mdk-stage1/ppp/pppd/sys-linux.c.wtmp2750
1 files changed, 0 insertions, 2750 deletions
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;
-}