From: Paul Mackerras Date: Mon, 24 Apr 1995 06:16:23 +0000 (+0000) Subject: Initial revision X-Git-Tag: RELEASE_2_3_6~769 X-Git-Url: https://git.ozlabs.org/?p=ppp.git;a=commitdiff_plain;h=609bb900cf3ecb53ef6a06bb7dbac35d2a1dd3ea Initial revision --- diff --git a/pppd/Makefile.svr4 b/pppd/Makefile.svr4 new file mode 100644 index 0000000..249ba40 --- /dev/null +++ b/pppd/Makefile.svr4 @@ -0,0 +1,26 @@ +# +# Makefile for pppd under Solaris 2. +# $Id: Makefile.svr4,v 1.1 1995/04/24 06:15:47 paulus Exp $ +# + +BINDIR = /usr/local/etc +MANDIR = /usr/local/man + +CC = gcc +COPTS = -g -O2 +CFLAGS = $(COPTS) -I.. + +INSTALL = /usr/sbin/install + +OBJS = main.o magic.o fsm.o lcp.o ipcp.o upap.o chap.o md5.o ccp.o \ + auth.o options.o lock.o sys-sol2.o + +pppd: $(OBJS) + $(CC) -o pppd $(OBJS) -lnsl + +install: + $(INSTALL) -f $(BINDIR) -m 4755 -u root pppd + $(INSTALL) -f $(MANDIR)/man8 pppd.8 + +clean: + rm -f $(OBJS) pppd *~ core diff --git a/pppd/sys-osf.c b/pppd/sys-osf.c new file mode 100644 index 0000000..cb3c7fd --- /dev/null +++ b/pppd/sys-osf.c @@ -0,0 +1,1282 @@ +/* + * sys-osf.c - System-dependent procedures for setting up + * PPP interfaces on OSF/1 systems which use the STREAMS ppp interface. + * + * Copyright (c) 1989 Carnegie Mellon University. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by Carnegie Mellon University. The name of the + * University may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static char rcsid[] = "$Id: sys-osf.c,v 1.1 1995/04/24 06:16:23 paulus Exp $"; +#endif + +/* + * TODO: + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "pppd.h" + +#ifndef ifr_mtu +#define ifr_mtu ifr_metric +#endif + +#define MAXMODULES 10 /* max number of module names to save */ +static struct modlist { + char modname[FMNAMESZ+1]; +} str_modules[MAXMODULES]; +static int str_module_count = 0; +static int pushed_ppp; +static int closed_stdio; + +static int restore_term; /* 1 => we've munged the terminal */ +static struct termios inittermios; /* Initial TTY termios */ +static struct winsize wsinfo; /* Initial window size info */ + +int sockfd; /* socket for doing interface ioctls */ + +int ttyfd = -1; /* Original ttyfd if we did a streamify() */ + +/* + * sys_init - System-dependent initialization. + */ +void +sys_init() +{ + openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP); + setlogmask(LOG_UPTO(LOG_INFO)); + if (debug) + setlogmask(LOG_UPTO(LOG_DEBUG)); + + /* Get an internet socket for doing socket ioctl's on. */ + if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { + syslog(LOG_ERR, "Couldn't create IP socket: %m"); + die(1); + } +} + +/* + * note_debug_level - note a change in the debug level. + */ +void +note_debug_level() +{ + if (debug) { + syslog(LOG_INFO, "Debug turned ON, Level %d", debug); + setlogmask(LOG_UPTO(LOG_DEBUG)); + } else { + setlogmask(LOG_UPTO(LOG_WARNING)); + } +} + +/* + * daemon - Detach us from the 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; +} + + +char pipename[] = "/dev/streams/pipe"; + +/* + * ppp_available - check if this kernel supports PPP. + */ +int +ppp_available() +{ + int fd, ret; + + fd = open(pipename, O_RDONLY, 0); + if (fd < 0) + return 0; /* can't find out - assume we don't have ppp */ + ret = ioctl(fd, I_FIND, "pppasync") >= 0; + close(fd); + return ret; +} + + +/* + * streampipe -- Opens a STREAMS based pipe. Used by streamify(). + */ + +int +streampipe(int fd[2]) +{ + if ((fd[0]=open(pipename, O_RDWR)) == -1) + return(-1); + else if ((fd[1]=open(pipename, O_RDWR)) == -1) { + close(fd[0]); + return(-1); + } else if (ioctl(fd[0], I_PIPE, fd[1]) != 0) { + close(fd[0]); + close(fd[1]); + return(-1); + } else { + return(ioctl(fd[0], I_PUSH, "pipemod")); + } +} + +/* + * streamify -- Needed for DEC OSF/1, since tty devices are not STREAMS + * modules (but ptys are, and pipes can be). + */ + +#define BUFFSIZE 1000 /* Size of buffer for streamify() */ + +int +streamify(int fd) +{ + int fdes[2]; + fd_set readfds; + int ret, fret, rret, maxfd; + static char buffer[BUFFSIZE]; + struct sigaction sa; + + if (streampipe(fdes) != 0) + syslog(LOG_ERR, "streampipe(): %m\n"); + else if (isastream(fdes[0]) == 1) { + if ((fret=fork()) < 0) { + syslog(LOG_ERR, "fork(): %m\n"); + } else if (fret == 0) { + /* Process to forward things from pipe to tty */ + sigemptyset(&(sa.sa_mask)); + sa.sa_handler = SIG_DFL; + sa.sa_flags = 0; + sigaction(SIGHUP, &sa, NULL); /* Go back to default actions */ + sigaction(SIGINT, &sa, NULL); /* for changed signals. */ + sigaction(SIGTERM, &sa, NULL); + sigaction(SIGCHLD, &sa, NULL); + sigaction(SIGUSR1, &sa, NULL); + sigaction(SIGUSR2, &sa, NULL); + close(fdes[0]); + + maxfd = (fdes[1]>fd)?fdes[1]:fd; + while (1) { + FD_ZERO(&readfds); + FD_SET(fdes[1], &readfds); + FD_SET(fd, &readfds); + ret = select(maxfd+1, &readfds, NULL, NULL, NULL); + if (FD_ISSET(fd, &readfds)) { + rret = read(fd, buffer, BUFFSIZE); + if (rret == 0) { + MAINDEBUG((LOG_DEBUG, "slave died: EOF on tty.")); + exit(0); + } else { + write(fdes[1], buffer, rret); + } + } + if (FD_ISSET(fdes[1], &readfds)) { + rret = read(fdes[1], buffer, BUFFSIZE); + if (rret == 0) { + MAINDEBUG((LOG_DEBUG, "slave died: EOF on pipe.")); + exit(0); + } else { + write(fd, buffer, rret); + } + } + } + } else { + close(fdes[1]); + ttyfd = fd; + return(fdes[0]); + } + } + + return(-1); +} + + +/* + * establish_ppp - Turn the serial port into a ppp interface. + */ +void +establish_ppp() +{ + int ret; + + if (isastream(fd) != 1) { + if ((fd=streamify(fd)) < 0) { + syslog(LOG_ERR, "Couldn't get a STREAMS module!\n"); + die(1); + } + } + + /* go through and save the name of all the modules, then pop em */ + for (;;) { + if (ioctl(fd, I_LOOK, str_modules[str_module_count].modname) < 0 || + ioctl(fd, I_POP, 0) < 0) + break; + MAINDEBUG((LOG_DEBUG, "popped stream module : %s", + str_modules[str_module_count].modname)); + str_module_count++; + } + + /* now push the async/fcs module */ + if (ioctl(fd, I_PUSH, "pppasync") < 0) { + syslog(LOG_ERR, "ioctl(I_PUSH, ppp_async): %m"); + die(1); + } + /* push the compress module */ + if (ioctl(fd, I_PUSH, "pppcomp") < 0) { + syslog(LOG_WARNING, "ioctl(I_PUSH, ppp_comp): %m"); + } + /* finally, push the ppp_if module that actually handles the */ + /* network interface */ + if (ioctl(fd, I_PUSH, "pppif") < 0) { + syslog(LOG_ERR, "ioctl(I_PUSH, ppp_if): %m"); + die(1); + } + pushed_ppp = 1; + /* read mode, message non-discard mode */ + if (ioctl(fd, I_SRDOPT, RMSGN|RPROTNORM) < 0) { + syslog(LOG_ERR, "ioctl(I_SRDOPT, RMSGN): %m"); + die(1); + } + /* + * Find out which interface we were given. + * (ppp_if handles this ioctl) + */ + if (ioctl(fd, (int)SIOCGETU, &ifunit) < 0) { + syslog(LOG_ERR, "ioctl(SIOCGETU): %m"); + die(1); + } + + /* Set debug flags in driver */ + if (ioctl(fd, (int)SIOCSIFDEBUG, &kdebugflag) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFDEBUG): %m"); + } + + /* close stdin, stdout, stderr if they might refer to the device */ + if (default_device && !closed_stdio) { + int i; + + for (i = 0; i <= 2; ++i) + if (i != fd && i != sockfd) + close(i); + closed_stdio = 1; + } +} + +/* Debugging routine.... */ + +void prstrstack(int fd) +{ + struct str_list sl; + struct str_mlist names[20]; + int ret, i; + + sl.sl_modlist = names; + + ret = ioctl(fd, I_LIST, &sl); + + if (ret >= 0) { + MAINDEBUG((LOG_DEBUG, "Current streams modules:\n")); + for (i=0; i 0; str_module_count--) { + if (ioctl(fd, I_PUSH, str_modules[str_module_count-1].modname)) { + if (errno != ENXIO) + syslog(LOG_WARNING, "str_restore: couldn't push module %s: %m", + str_modules[str_module_count-1].modname); + } else { + MAINDEBUG((LOG_INFO, "str_restore: pushed module %s", + str_modules[str_module_count-1].modname)); + } + } + + if (ttyfd >= 0) { + close(fd); + fd = ttyfd; + ttyfd = -1; + } + } + +} + + +/* + * List of valid speeds. + */ +struct speed { + int speed_int, speed_val; +} speeds[] = { +#ifdef B50 + { 50, B50 }, +#endif +#ifdef B75 + { 75, B75 }, +#endif +#ifdef B110 + { 110, B110 }, +#endif +#ifdef B134 + { 134, B134 }, +#endif +#ifdef B150 + { 150, B150 }, +#endif +#ifdef B200 + { 200, B200 }, +#endif +#ifdef B300 + { 300, B300 }, +#endif +#ifdef B600 + { 600, B600 }, +#endif +#ifdef B1200 + { 1200, B1200 }, +#endif +#ifdef B1800 + { 1800, B1800 }, +#endif +#ifdef B2000 + { 2000, B2000 }, +#endif +#ifdef B2400 + { 2400, B2400 }, +#endif +#ifdef B3600 + { 3600, B3600 }, +#endif +#ifdef B4800 + { 4800, B4800 }, +#endif +#ifdef B7200 + { 7200, B7200 }, +#endif +#ifdef B9600 + { 9600, B9600 }, +#endif +#ifdef B19200 + { 19200, B19200 }, +#endif +#ifdef B38400 + { 38400, B38400 }, +#endif +#ifdef EXTA + { 19200, EXTA }, +#endif +#ifdef EXTB + { 38400, EXTB }, +#endif +#ifdef B57600 + { 57600, B57600 }, +#endif +#ifdef B115200 + { 115200, B115200 }, +#endif + { 0, 0 } +}; + +/* + * Translate from bits/second to a speed_t. + */ +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; + syslog(LOG_WARNING, "speed %d not supported", bps); + return 0; +} + +/* + * Translate from a speed_t to bits/second. + */ +int +baud_rate_of(speed) + int speed; +{ + struct speed *speedp; + + if (speed == 0) + return 0; + for (speedp = speeds; speedp->speed_int; speedp++) + if (speed == speedp->speed_val) + return speedp->speed_int; + return 0; +} + +/* + * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity, + * at the requested speed, etc. If `local' is true, set CLOCAL + * regardless of whether the modem option was specified. + */ +void +set_up_tty(fd, local) + int fd, local; +{ + int speed; + struct termios tios; + + if (tcgetattr(fd, &tios) < 0) { + syslog(LOG_ERR, "tcgetattr: %m"); + die(1); + } + + if (!restore_term) { + inittermios = tios; + ioctl(fd, TIOCGWINSZ, &wsinfo); + } + + tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); + if (crtscts > 0) + tios.c_cflag |= CRTSCTS; + else if (crtscts < 0) + tios.c_cflag &= ~CRTSCTS; + + tios.c_cflag |= CS8 | CREAD | HUPCL; + if (local || !modem) + tios.c_cflag |= CLOCAL; + tios.c_iflag = IGNBRK | IGNPAR; + tios.c_oflag = 0; + tios.c_lflag = 0; + tios.c_cc[VMIN] = 1; + tios.c_cc[VTIME] = 0; + + if (crtscts == 2) { + tios.c_iflag |= 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 B0, + * since that implies that the serial port is disabled. + */ + if (speed == B0) { + syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate", + devnam); + die(1); + } + } + + if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) { + syslog(LOG_ERR, "tcsetattr: %m"); + die(1); + } + + baud_rate = inspeed = baud_rate_of(speed); + restore_term = 1; +} + +/* + * restore_tty - restore the terminal to the saved settings. + */ +void +restore_tty() +{ + if (restore_term) { + if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0) + if (errno != ENXIO) + syslog(LOG_WARNING, "tcsetattr: %m"); + ioctl(fd, TIOCSWINSZ, &wsinfo); + restore_term = 0; + } +} + +/* + * setdtr - control the DTR line on the serial port. + * This is called from die(), so it shouldn't call die(). + */ +void +setdtr(fd, on) +int fd, on; +{ + int modembits = TIOCM_DTR; + + ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); +} + + +/* + * output - Output PPP packet. + */ +void +output(unit, p, len) + int unit; + u_char *p; + int len; +{ + struct strbuf str; + + if (unit != 0) + MAINDEBUG((LOG_WARNING, "output: unit != 0!")); + if (debug) + log_packet(p, len, "sent "); + + str.len = len; + str.buf = (caddr_t) p; + if (putmsg(fd, NULL, &str, 0) < 0) { + if (errno != ENXIO) { + syslog(LOG_ERR, "putmsg: %m"); + die(1); + } + } +} + +/* + * wait_input - wait for input, for a length of time specified in *timo. + */ +void +wait_input(timo) + struct timeval *timo; +{ + int t; + struct pollfd pfd; + + t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000; + pfd.fd = fd; + pfd.events = POLLIN | POLLPRI | POLLHUP; + if (poll(&pfd, 1, t) < 0 && errno != EINTR) { + syslog(LOG_ERR, "poll: %m"); + die(1); + } +} + +/* + * read_packet - get a PPP packet from the serial device. + */ +int +read_packet(buf) + u_char *buf; +{ + struct strbuf str, ctl; + int len, i; + unsigned char ctlbuf[16]; + + str.maxlen = PPP_MTU + PPP_HDRLEN; + str.buf = (caddr_t) buf; + ctl.maxlen = sizeof(ctlbuf); + ctl.buf = (caddr_t) ctlbuf; + i = 0; + len = getmsg(fd, &ctl, &str, &i); + if (len < 0) { + if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR) { + return -1; + } + syslog(LOG_ERR, "getmsg(fd) %m"); + die(1); + } + if (len) + MAINDEBUG((LOG_DEBUG, "getmsg returned 0x%x",len)); + if (ctl.len > 0) + syslog(LOG_NOTICE, "got ctrl msg len %d %x %x\n", ctl.len, + ctlbuf[0], ctlbuf[1]); + + if (str.len < 0) { + MAINDEBUG((LOG_DEBUG, "getmsg short return length %d", str.len)); + return -1; + } + + return str.len; +} + + +/* + * ppp_send_config - configure the transmit characteristics of + * the ppp interface. + */ +void +ppp_send_config(unit, mtu, asyncmap, pcomp, accomp) + int unit, mtu; + u_int32_t asyncmap; + int pcomp, accomp; +{ + char c; + struct ifreq ifr; + + strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); + ifr.ifr_mtu = mtu; + if (ioctl(sockfd, (int)SIOCSIPMTU, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIPMTU): %m"); + quit(); + } + + if(ioctl(fd, (int)SIOCSIFASYNCMAP, (caddr_t) &asyncmap) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFASYNCMAP): %m"); + quit(); + } + + c = (pcomp? 1: 0); + if(ioctl(fd, (int)SIOCSIFCOMPPROT, &c) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFCOMPPROT): %m"); + quit(); + } + + c = (accomp? 1: 0); + if(ioctl(fd, (int)SIOCSIFCOMPAC, &c) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFCOMPAC): %m"); + quit(); + } +} + + +/* + * ppp_set_xaccm - set the extended transmit ACCM for the interface. + */ +void +ppp_set_xaccm(unit, accm) + int unit; + ext_accm accm; +{ + if (ioctl(fd, (int)SIOCSIFXASYNCMAP, accm) < 0 && errno != ENOTTY) + syslog(LOG_WARNING, "ioctl(set extended ACCM): %m"); +} + + +/* + * ppp_recv_config - configure the receive-side characteristics of + * the ppp interface. + */ +void +ppp_recv_config(unit, mru, asyncmap, pcomp, accomp) + int unit, mru; + u_int32_t asyncmap; + int pcomp, accomp; +{ + char c; + + if (ioctl(fd, (int)SIOCSIFMRU, &mru) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFMRU): %m"); + } + + if (ioctl(fd, (int)SIOCSIFRASYNCMAP, (caddr_t) &asyncmap) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFRASYNCMAP): %m"); + } + + c = 2 + (pcomp? 1: 0); + if(ioctl(fd, (int)SIOCSIFCOMPPROT, &c) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFCOMPPROT): %m"); + } + + c = 2 + (accomp? 1: 0); + if (ioctl(fd, (int)SIOCSIFCOMPAC, &c) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFCOMPAC): %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; +{ + struct ppp_option_data data; + + if ((unsigned) opt_len > MAX_PPP_OPTION) + opt_len = MAX_PPP_OPTION; + data.length = opt_len; + data.transmit = for_transmit; + BCOPY(opt_ptr, data.opt_data, opt_len); + return ioctl(fd, (int)SIOCSCOMPRESS, (caddr_t) &data) >= 0; +} + +/* + * ccp_flags_set - inform kernel about the current state of CCP. + */ +void +ccp_flags_set(unit, isopen, isup) + int unit, isopen, isup; +{ + int x; + + x = (isopen? 1: 0) + (isup? 2: 0); + if (ioctl(fd, (int)SIOCSIFCOMP, (caddr_t) &x) < 0 && errno != ENOTTY) + syslog(LOG_ERR, "ioctl (SIOCSIFCOMP): %m"); +} + +/* + * 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 x; + + if (ioctl(fd, (int)SIOCGIFCOMP, (caddr_t) &x) < 0) { + syslog(LOG_ERR, "ioctl(SIOCGIFCOMP): %m"); + return 0; + } + return x & CCP_FATALERROR; +} + +/* + * sifvjcomp - config tcp header compression + */ +int +sifvjcomp(u, vjcomp, cidcomp, maxcid) + int u, vjcomp, cidcomp, maxcid; +{ + char x; + + x = (vjcomp? 1: 0) + (cidcomp? 0: 2) + (maxcid << 4); + if (ioctl(fd, (int)SIOCSIFVJCOMP, (caddr_t) &x) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFVJCOMP): %m"); + return 0; + } + return 1; +} + +/* + * sifup - Config the interface up and enable IP packets to pass. + */ +int +sifup(u) + int u; +{ + struct ifreq ifr; + struct npioctl npi; + + strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); + if (ioctl(sockfd, (int)SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m"); + return 0; + } + ifr.ifr_flags |= IFF_UP; + if (ioctl(sockfd, (int)SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m"); + return 0; + } + npi.protocol = PPP_IP; + npi.mode = NPMODE_PASS; + if (ioctl(fd, (int)SIOCSETNPMODE, &npi) < 0) { + if (errno != ENOTTY) { + syslog(LOG_ERR, "ioctl(SIOCSETNPMODE): %m"); + return 0; + } + } + return 1; +} + +/* + * sifdown - Config the interface down. + */ +int +sifdown(u) + int u; +{ + struct ifreq ifr; + int rv; + struct npioctl npi; + + rv = 1; + npi.protocol = PPP_IP; + npi.mode = NPMODE_ERROR; + if (ioctl(fd, (int)SIOCSETNPMODE, (caddr_t) &npi) < 0) { + if (errno != ENOTTY) { + syslog(LOG_ERR, "ioctl(SIOCSETNPMODE): %m"); + rv = 0; + } + } + + strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); + if (ioctl(sockfd, (int)SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m"); + rv = 0; + } else { + ifr.ifr_flags &= ~IFF_UP; + if (ioctl(sockfd, (int)SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m"); + rv = 0; + } + } + return rv; +} + +/* + * SET_SA_FAMILY - initialize a struct sockaddr, setting the sa_family field. + */ +#define SET_SA_FAMILY(addr, family) \ + BZERO((char *) &(addr), sizeof(addr)); \ + addr.sa_family = (family); + +/* + * sifaddr - Config the interface IP addresses and netmask. + */ +int +sifaddr(u, o, h, m) + int u; + u_int32_t o, h, m; +{ + int ret; + struct ifreq ifr; + + ret = 1; + strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); + SET_SA_FAMILY(ifr.ifr_addr, AF_INET); + ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o; + if (ioctl(sockfd, (int)SIOCSIFADDR, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m"); + ret = 0; + } + ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h; + if (ioctl(sockfd, (int)SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m"); + ret = 0; + } + if (m != 0) { + ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m; + syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m)); + if (ioctl(sockfd, (int)SIOCSIFNETMASK, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m"); + ret = 0; + } + } + +/* Reset if address --- This is stupid, but seems to be necessary... */ + + ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o; + if (ioctl(sockfd, (int)SIOCSIFADDR, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m"); + ret = 0; + } + + 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; +{ + struct ortentry rt; + + SET_SA_FAMILY(rt.rt_dst, AF_INET); + ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h; + SET_SA_FAMILY(rt.rt_gateway, AF_INET); + ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o; + rt.rt_flags = RTF_HOST; + if (ioctl(sockfd, (int)SIOCDELRT, (caddr_t) &rt) < 0) { + syslog(LOG_ERR, "ioctl(SIOCDELRT): %m"); + return 0; + } + return 1; +} + +/* + * sifdefaultroute - assign a default route through the address given. + */ +int +sifdefaultroute(u, g) + int u; + u_int32_t g; +{ + struct ortentry rt; + + SET_SA_FAMILY(rt.rt_dst, AF_INET); + SET_SA_FAMILY(rt.rt_gateway, AF_INET); + ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g; + rt.rt_flags = RTF_GATEWAY; + if (ioctl(sockfd, (int)SIOCADDRT, &rt) < 0) { + syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m"); + return 0; + } + return 1; +} + +/* + * cifdefaultroute - delete a default route through the address given. + */ +int +cifdefaultroute(u, g) + int u; + u_int32_t g; +{ + struct ortentry rt; + + SET_SA_FAMILY(rt.rt_dst, AF_INET); + SET_SA_FAMILY(rt.rt_gateway, AF_INET); + ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g; + rt.rt_flags = RTF_GATEWAY; + if (ioctl(sockfd, (int)SIOCDELRT, &rt) < 0) { + syslog(LOG_ERR, "default route ioctl(SIOCDELRT): %m"); + return 0; + } + return 1; +} + +/* + * sifproxyarp - Make a proxy ARP entry for the peer. + */ +int +sifproxyarp(unit, hisaddr) + int unit; + u_int32_t hisaddr; +{ + struct arpreq arpreq; + + BZERO(&arpreq, sizeof(arpreq)); + + /* + * Get the hardware address of an interface on the same subnet + * as our local address. + */ + if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) { + syslog(LOG_WARNING, "Cannot determine ethernet address for proxy ARP"); + return 0; + } + + SET_SA_FAMILY(arpreq.arp_pa, AF_INET); + ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr; + arpreq.arp_flags = ATF_PERM | ATF_PUBL; + if (ioctl(sockfd, (int)SIOCSARP, (caddr_t)&arpreq) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSARP): %m"); + return 0; + } + + return 1; +} + +/* + * cifproxyarp - Delete the proxy ARP entry for the peer. + */ +int +cifproxyarp(unit, hisaddr) + int unit; + u_int32_t hisaddr; +{ + struct arpreq arpreq; + + BZERO(&arpreq, sizeof(arpreq)); + SET_SA_FAMILY(arpreq.arp_pa, AF_INET); + ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr; + if (ioctl(sockfd, (int)SIOCDARP, (caddr_t)&arpreq) < 0) { + syslog(LOG_ERR, "ioctl(SIOCDARP): %m"); + return 0; + } + return 1; +} + +/* + * get_ether_addr - get the hardware address of an interface on the + * the same subnet as ipaddr. + */ +#define MAX_IFS 32 + +int s; + +int +get_ether_addr(ipaddr, hwaddr) + u_int ipaddr; + struct sockaddr *hwaddr; +{ + struct ifreq *ifr, *ifend, *ifp; + u_int ina, mask; + struct sockaddr_dl *dla; + struct ifreq ifreq; + struct ifconf ifc; + struct ifreq ifs[MAX_IFS]; + struct ifdevea ifdevreq; + + ifc.ifc_len = sizeof(ifs); + ifc.ifc_req = ifs; + if (ioctl(sockfd, (int)SIOCGIFCONF, &ifc) < 0) { + perror("ioctl(SIOCGIFCONF)"); + return 0; + } + + /* + * Scan through looking for an interface with an Internet + * address on the same subnet as `ipaddr'. + */ + ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); + for (ifr = ifc.ifc_req; ifr < ifend; ) { + if (ifr->ifr_addr.sa_family == AF_INET) { + ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr; + strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); + /* + * Check that the interface is up, and not point-to-point + * or loopback. + */ + if (ioctl(sockfd, (int)SIOCGIFFLAGS, &ifreq) < 0) + continue; + if ((ifreq.ifr_flags & + (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) + != (IFF_UP|IFF_BROADCAST)) + continue; + /* + * Get its netmask and check that it's on the right subnet. + */ + if (ioctl(sockfd, (int)SIOCGIFNETMASK, &ifreq) < 0) + continue; + mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr; + if ((ipaddr & mask) != (ina & mask)) + continue; + + break; + } + ifr++; + } + + if (ifr >= ifend) + return 0; + syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name); + + strncpy(ifdevreq.ifr_name, ifr->ifr_name, sizeof(ifdevreq.ifr_name)); + + if (ioctl(sockfd, (int)SIOCRPHYSADDR, &ifdevreq) < 0) { + perror("ioctl(SIOCRPHYSADDR)"); + return(0); + } + + hwaddr->sa_family = AF_UNSPEC; + memcpy(hwaddr->sa_data, ifdevreq.current_pa, sizeof(ifdevreq.current_pa)); + return(1); +} + + + + +#define WTMPFILE "/usr/adm/wtmp" +#include + +void +logwtmp(line, name, host) + char *line, *name, *host; +{ + int fd; + struct stat buf; + struct utmp ut; + + if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0) + return; + if (!fstat(fd, &buf)) { + (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line)); + (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name)); + (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host)); + (void)time(&ut.ut_time); + if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp)) + (void)ftruncate(fd, buf.st_size); + } + close(fd); +} + +/* + * Code for locking/unlocking the serial device. + * This code is derived from chat.c. + */ + +#ifndef LOCK_DIR +# ifdef HDB +# define PIDSTRING +# define LOCK_PREFIX "/usr/spool/locks/LCK.." +# else /* HDB */ +# define LOCK_PREFIX "/usr/spool/uucp/LCK.." +# endif /* HDB */ +#endif /* LOCK_DIR */ + +static char *lock_file; + +/* + * lock - create a lock file for the named device + */ +int +lock(dev) + char *dev; +{ + char hdb_lock_buffer[12]; + int fd, pid, n; + char *p; + + if ((p = strrchr(dev, '/')) != NULL) + dev = p + 1; + lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1); + if (lock_file == NULL) + novm("lock file name"); + strcat(strcpy(lock_file, LOCK_PREFIX), dev); + + while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) { + if (errno == EEXIST + && (fd = open(lock_file, O_RDONLY, 0)) >= 0) { + /* Read the lock file to find out who has the device locked */ +#ifdef PIDSTRING + n = read(fd, hdb_lock_buffer, 11); + if (n > 0) { + hdb_lock_buffer[n] = 0; + pid = atoi(hdb_lock_buffer); + } +#else + n = read(fd, &pid, sizeof(pid)); +#endif + if (n <= 0) { + syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file); + close(fd); + } else { + if (kill(pid, 0) == -1 && errno == ESRCH) { + /* pid no longer exists - remove the lock file */ + if (unlink(lock_file) == 0) { + close(fd); + syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)", + dev, pid); + continue; + } else + syslog(LOG_WARNING, "Couldn't remove stale lock on %s", + dev); + } else + syslog(LOG_NOTICE, "Device %s is locked by pid %d", + dev, pid); + } + close(fd); + } else + syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file); + free(lock_file); + lock_file = NULL; + return -1; + } + +# ifdef PIDSTRING + sprintf(hdb_lock_buffer, "%10d\n", getpid()); + write(fd, hdb_lock_buffer, 11); +# else + pid = getpid(); + write(fd, &pid, sizeof pid); +# endif + + close(fd); + return 0; +} + +/* + * unlock - remove our lockfile + */ +void +unlock() +{ + if (lock_file) { + unlink(lock_file); + free(lock_file); + lock_file = NULL; + } +} +