diff options
Diffstat (limited to 'mdk-stage1/ppp/pppd/sys-solaris.c')
| -rw-r--r-- | mdk-stage1/ppp/pppd/sys-solaris.c | 2737 |
1 files changed, 2737 insertions, 0 deletions
diff --git a/mdk-stage1/ppp/pppd/sys-solaris.c b/mdk-stage1/ppp/pppd/sys-solaris.c new file mode 100644 index 000000000..da5f9c45a --- /dev/null +++ b/mdk-stage1/ppp/pppd/sys-solaris.c @@ -0,0 +1,2737 @@ +/* + * 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; +} |