--- /dev/null
+/*
+ * System-dependent procedures for pppd under SunOS 4.
+ *
+ * Copyright (c) 1994 The Australian National University.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation is hereby granted, provided that the above copyright
+ * notice appears in all copies. This software is provided without any
+ * warranty, express or implied. The Australian National University
+ * makes no representations about the suitability of this software for
+ * any purpose.
+ *
+ * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
+ * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
+ * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
+ * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
+ * OR MODIFICATIONS.
+ */
+
+#ifndef lint
+static char rcsid[] = "$Id: sys-sunos4.c,v 1.1 1995/10/27 03:54:02 paulus Exp $";
+#endif
+
+#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <termios.h>
+#include <signal.h>
+#include <malloc.h>
+#include <utmp.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/stream.h>
+#include <sys/stropts.h>
+#include <sys/syslog.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/poll.h>
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <net/nit_if.h>
+#include <net/route.h>
+#include <net/ppp_defs.h>
+#include <net/pppio.h>
+#include <netinet/in.h>
+
+#include "pppd.h"
+
+static int pppfd;
+static int fdmuxid = -1;
+static int iffd;
+static int sockfd;
+
+static int restore_term;
+static struct termios inittermios;
+static struct winsize wsinfo; /* Initial window size info */
+static pid_t parent_pid; /* PID of our parent */
+
+static int link_mtu, link_mru;
+
+#define NMODULES 32
+static int tty_nmodules;
+static char tty_modules[NMODULES][FMNAMESZ+1];
+
+static int if_is_up; /* Interface has been marked up */
+static u_int32_t default_route_gateway; /* Gateway for default route added */
+static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
+
+/* Prototypes for procedures local to this file. */
+static int translate_speed __P((int));
+static int baud_rate_of __P((int));
+static int get_ether_addr __P((u_int32_t, struct sockaddr *));
+static int strioctl __P((int, int, void *, int, int));
+
+
+/*
+ * sys_init - System-dependent initialization.
+ */
+void
+sys_init()
+{
+ 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);
+ }
+
+ /*
+ * We may want to send a SIGHUP to the session leader associated
+ * with our controlling terminal later. Because SunOS doesn't
+ * have getsid(), we make do with sending the signal to our
+ * parent process.
+ */
+ parent_pid = getppid();
+}
+
+/*
+ * 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()
+{
+ struct ifreq ifr;
+
+ if (if_is_up)
+ sifdown(0);
+ if (default_route_gateway)
+ cifdefaultroute(0, default_route_gateway);
+ if (proxy_arp_addr)
+ cifproxyarp(0, proxy_arp_addr);
+}
+
+/*
+ * 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;
+}
+
+/*
+ * 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));
+ }
+}
+
+/*
+ * ppp_available - check whether the system has any ppp interfaces
+ */
+int
+ppp_available()
+{
+ struct stat buf;
+
+ return stat("/dev/ppp", &buf) >= 0;
+}
+
+/*
+ * establish_ppp - Turn the serial port into a ppp interface.
+ */
+void
+establish_ppp()
+{
+ int i, x;
+ struct ifreq ifr;
+
+ pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
+ if (pppfd < 0) {
+ syslog(LOG_ERR, "Can't open /dev/ppp: %m");
+ die(1);
+ }
+ if (kdebugflag) {
+ x = PPPDBG_LOG + PPPDBG_DRIVER;
+ strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
+ }
+
+ /* Assign a new PPA and get its unit number. */
+ if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) {
+ syslog(LOG_ERR, "Can't create new PPP interface: %m");
+ die(1);
+ }
+
+ /*
+ * Open the ppp device again and push the if_ppp module on it.
+ */
+ iffd = open("/dev/ppp", O_RDWR, 0);
+ if (iffd < 0) {
+ syslog(LOG_ERR, "Can't open /dev/ppp (2): %m");
+ die(1);
+ }
+ if (kdebugflag) {
+ x = PPPDBG_LOG + PPPDBG_DRIVER;
+ strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
+ }
+ if (strioctl(iffd, PPPIO_ATTACH, &ifunit, sizeof(int), 0) < 0) {
+ syslog(LOG_ERR, "Couldn't attach ppp interface to device: %m");
+ die(1);
+ }
+ if (ioctl(iffd, I_PUSH, "if_ppp") < 0) {
+ syslog(LOG_ERR, "Can't push ppp interface module: %m");
+ die(1);
+ }
+ if (kdebugflag) {
+ x = PPPDBG_LOG + PPPDBG_IF;
+ strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
+ }
+ if (strioctl(iffd, PPPIO_NEWPPA, &ifunit, sizeof(int), 0) < 0) {
+ syslog(LOG_ERR, "Couldn't create ppp interface unit: %m");
+ die(1);
+ }
+ x = PPP_IP;
+ if (strioctl(iffd, PPPIO_BIND, &x, sizeof(int), 0) < 0) {
+ syslog(LOG_ERR, "Couldn't bind ppp interface to IP SAP: %m");
+ die(1);
+ }
+
+ /* Pop any existing modules off the tty stream. */
+ for (i = 0;; ++i)
+ if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
+ || ioctl(fd, I_POP, 0) < 0)
+ break;
+ tty_nmodules = i;
+
+ /* Push the async hdlc module and the compressor module. */
+ if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
+ syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
+ die(1);
+ }
+ if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
+ syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
+/* die(1); */
+ }
+
+ /* Link the serial port under the PPP multiplexor. */
+ if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
+ syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
+ die(1);
+ }
+
+ do {
+ char buf[PPP_MRU];
+
+ i = read(fd, buf, PPP_MRU);
+ syslog(LOG_DEBUG, "read %d bytes from fd", i);
+ } while (i > 0);
+}
+
+/*
+ * disestablish_ppp - Restore the serial port to normal operation.
+ * This shouldn't call die() because it's called from die().
+ */
+void
+disestablish_ppp()
+{
+ int i;
+
+ if (fdmuxid >= 0) {
+ if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
+ if (!hungup)
+ syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
+ }
+ fdmuxid = -1;
+
+ if (!hungup) {
+ while (ioctl(fd, I_POP, 0) >= 0)
+ ;
+ for (i = tty_nmodules - 1; i >= 0; --i)
+ if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
+ syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
+ tty_modules[i]);
+ }
+ if (hungup && default_device && parent_pid > 0) {
+ /*
+ * If we have received a hangup, we need to send a SIGHUP
+ * to the terminal's controlling process. The reason is
+ * that the original stream head for the terminal hasn't
+ * seen the M_HANGUP message (it went up through the ppp
+ * driver to the stream head for our fd to /dev/ppp).
+ * Actually we send the signal to the process that invoked
+ * pppd, since SunOS doesn't have getsid().
+ */
+ kill(parent_pid, SIGHUP);
+ }
+ }
+}
+
+/*
+ * List of valid speeds.
+ */
+struct speed {
+ int speed_int, speed_val;
+} speeds[] = {
+#ifdef B50
+ { 50, B50 },
+#endif
+#ifdef B75
+ { 75, B75 },
+#endif
+#ifdef B110
+ { 110, B110 },
+#endif
+#ifdef B134
+ { 134, B134 },
+#endif
+#ifdef B150
+ { 150, B150 },
+#endif
+#ifdef B200
+ { 200, B200 },
+#endif
+#ifdef B300
+ { 300, B300 },
+#endif
+#ifdef B600
+ { 600, B600 },
+#endif
+#ifdef B1200
+ { 1200, B1200 },
+#endif
+#ifdef B1800
+ { 1800, B1800 },
+#endif
+#ifdef B2000
+ { 2000, B2000 },
+#endif
+#ifdef B2400
+ { 2400, B2400 },
+#endif
+#ifdef B3600
+ { 3600, B3600 },
+#endif
+#ifdef B4800
+ { 4800, B4800 },
+#endif
+#ifdef B7200
+ { 7200, B7200 },
+#endif
+#ifdef B9600
+ { 9600, B9600 },
+#endif
+#ifdef B19200
+ { 19200, B19200 },
+#endif
+#ifdef B38400
+ { 38400, B38400 },
+#endif
+#ifdef EXTA
+ { 19200, EXTA },
+#endif
+#ifdef EXTB
+ { 38400, EXTB },
+#endif
+#ifdef B57600
+ { 57600, B57600 },
+#endif
+#ifdef B115200
+ { 115200, B115200 },
+#endif
+ { 0, 0 }
+};
+
+/*
+ * Translate from bits/second to a speed_t.
+ */
+static int
+translate_speed(bps)
+ int bps;
+{
+ struct speed *speedp;
+
+ if (bps == 0)
+ return 0;
+ for (speedp = speeds; speedp->speed_int; speedp++)
+ if (bps == speedp->speed_int)
+ return speedp->speed_val;
+ syslog(LOG_WARNING, "speed %d not supported", bps);
+ return 0;
+}
+
+/*
+ * Translate from a speed_t to bits/second.
+ */
+static int
+baud_rate_of(speed)
+ int speed;
+{
+ struct speed *speedp;
+
+ if (speed == 0)
+ return 0;
+ for (speedp = speeds; speedp->speed_int; speedp++)
+ if (speed == speedp->speed_val)
+ return speedp->speed_int;
+ return 0;
+}
+
+/*
+ * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
+ * at the requested speed, etc. If `local' is true, set CLOCAL
+ * regardless of whether the modem option was specified.
+ */
+void
+set_up_tty(fd, local)
+ int fd, local;
+{
+ int speed;
+ struct termios tios;
+
+ if (tcgetattr(fd, &tios) < 0) {
+ 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 |= 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) {
+ 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 (!default_device) {
+ /*
+ * Turn off echoing, because otherwise we can get into
+ * a loop with the tty and the modem echoing to each other.
+ * We presume we are the sole user of this tty device, so
+ * when we close it, it will revert to its defaults anyway.
+ */
+ inittermios.c_lflag &= ~(ECHO | ECHONL);
+ }
+ if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
+ if (!hungup && errno != ENXIO)
+ 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 data;
+ int retries;
+ struct pollfd pfd;
+
+ if (debug)
+ log_packet(p, len, "sent ");
+
+ data.len = len;
+ data.buf = (caddr_t) p;
+ while (putmsg(pppfd, NULL, &data, 0) < 0) {
+ if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
+ if (errno != ENXIO)
+ syslog(LOG_ERR, "Couldn't send packet: %m");
+ break;
+ }
+ pfd.fd = fd;
+ pfd.events = POLLOUT;
+ poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
+ }
+}
+
+/*
+ * wait_input - wait until there is data available on fd,
+ * for the length of time specified by *timo (indefinite
+ * if timo is NULL).
+ */
+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 = pppfd;
+ 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 ctrl, data;
+ int flags, len;
+ unsigned char ctrlbuf[64];
+
+ for (;;) {
+ data.maxlen = PPP_MRU + PPP_HDRLEN;
+ data.buf = (caddr_t) buf;
+ ctrl.maxlen = sizeof(ctrlbuf);
+ ctrl.buf = (caddr_t) ctrlbuf;
+ flags = 0;
+ len = getmsg(pppfd, &ctrl, &data, &flags);
+ if (len < 0) {
+ if (errno = EAGAIN || errno == EINTR)
+ return -1;
+ syslog(LOG_ERR, "Error reading packet: %m");
+ die(1);
+ }
+
+ if (ctrl.len <= 0)
+ return data.len;
+
+ /*
+ * Got a M_PROTO or M_PCPROTO message. Huh?
+ */
+ if (debug)
+ syslog(LOG_DEBUG, "got ctrl msg len=%d", ctrl.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;
+{
+ int cf[2];
+
+ link_mtu = mtu;
+ if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
+ if (hungup && errno == ENXIO)
+ return;
+ syslog(LOG_ERR, "Couldn't set MTU: %m");
+ }
+ if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
+ syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
+ }
+ cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
+ cf[1] = COMP_PROT | COMP_AC;
+ if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
+ syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
+ }
+}
+
+/*
+ * ppp_set_xaccm - set the extended transmit ACCM for the interface.
+ */
+void
+ppp_set_xaccm(unit, accm)
+ int unit;
+ ext_accm accm;
+{
+ if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
+ if (!hungup || errno != ENXIO)
+ syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
+ }
+}
+
+/*
+ * ppp_recv_config - configure the receive-side characteristics of
+ * the ppp interface.
+ */
+void
+ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
+ int unit, mru;
+ u_int32_t asyncmap;
+ int pcomp, accomp;
+{
+ int cf[2];
+
+ link_mru = mru;
+ if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
+ if (hungup && errno == ENXIO)
+ return;
+ syslog(LOG_ERR, "Couldn't set MRU: %m");
+ }
+ if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
+ syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
+ }
+ cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
+ cf[1] = DECOMP_PROT | DECOMP_AC;
+ if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
+ syslog(LOG_ERR, "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)
+ syslog(LOG_ERR, "Couldn't set kernel CCP state: %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 cf[2];
+
+ cf[0] = cf[1] = 0;
+ if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
+ if (errno != ENXIO && errno != EINVAL)
+ syslog(LOG_ERR, "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) {
+ syslog(LOG_ERR, "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)
+ syslog(LOG_ERR, "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;
+
+ strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+ if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
+ syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
+ return 0;
+ }
+ ifr.ifr_flags |= IFF_UP;
+ if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
+ syslog(LOG_ERR, "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;
+
+ strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+ if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
+ syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
+ return 0;
+ }
+ if ((ifr.ifr_flags & IFF_UP) != 0) {
+ ifr.ifr_flags &= ~IFF_UP;
+ if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
+ syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
+ return 0;
+ }
+ }
+ if_is_up = 0;
+ return 1;
+}
+
+#define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
+
+/*
+ * sifaddr - Config the interface IP addresses and netmask.
+ */
+int
+sifaddr(u, o, h, m)
+ int u;
+ u_int32_t o, h, m;
+{
+ struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+ ifr.ifr_addr.sa_family = AF_INET;
+ INET_ADDR(ifr.ifr_addr) = o;
+ if (ioctl(sockfd, SIOCSIFADDR, &ifr) < 0) {
+ syslog(LOG_ERR, "Couldn't set local IP address: %m");
+ }
+ ifr.ifr_dstaddr.sa_family = AF_INET;
+ INET_ADDR(ifr.ifr_dstaddr) = h;
+ if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) {
+ syslog(LOG_ERR, "Couldn't set remote IP address: %m");
+ }
+ ifr.ifr_addr.sa_family = AF_INET;
+ INET_ADDR(ifr.ifr_addr) = m;
+ if (ioctl(sockfd, SIOCSIFNETMASK, &ifr) < 0) {
+ syslog(LOG_ERR, "Couldn't set IP netmask: %m");
+ }
+ ifr.ifr_metric = link_mtu;
+ if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) {
+ syslog(LOG_ERR, "Couldn't set IP MTU: %m");
+ }
+
+ return 1;
+}
+
+/*
+ * cifaddr - Clear the interface IP addresses, and delete routes
+ * through the interface if possible.
+ */
+int
+cifaddr(u, o, h)
+ int u;
+ u_int32_t o, h;
+{
+ struct rtentry rt;
+
+ rt.rt_dst.sa_family = AF_INET;
+ INET_ADDR(rt.rt_dst) = h;
+ rt.rt_gateway.sa_family = AF_INET;
+ INET_ADDR(rt.rt_gateway) = o;
+ rt.rt_flags = RTF_HOST;
+ ioctl(sockfd, SIOCDELRT, &rt);
+ return 1;
+}
+
+/*
+ * sifdefaultroute - assign a default route through the address given.
+ */
+int
+sifdefaultroute(u, g)
+ int u;
+ u_int32_t g;
+{
+ struct rtentry rt;
+
+ rt.rt_dst.sa_family = AF_INET;
+ INET_ADDR(rt.rt_dst) = 0;
+ rt.rt_gateway.sa_family = AF_INET;
+ INET_ADDR(rt.rt_gateway) = g;
+ rt.rt_flags = RTF_GATEWAY;
+
+ if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
+ syslog(LOG_ERR, "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, g)
+ int u;
+ u_int32_t g;
+{
+ struct rtentry rt;
+
+ rt.rt_dst.sa_family = AF_INET;
+ INET_ADDR(rt.rt_dst) = 0;
+ rt.rt_gateway.sa_family = AF_INET;
+ INET_ADDR(rt.rt_gateway) = g;
+ rt.rt_flags = RTF_GATEWAY;
+
+ if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
+ syslog(LOG_ERR, "Can't delete default route: %m");
+ return 0;
+ }
+
+ default_route_gateway = 0;
+ return 1;
+}
+
+/*
+ * sifproxyarp - Make a proxy ARP entry for the peer.
+ */
+int
+sifproxyarp(unit, hisaddr)
+ int unit;
+ u_int32_t hisaddr;
+{
+ struct arpreq arpreq;
+
+ bzero(&arpreq, sizeof(arpreq));
+ if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
+ return 0;
+
+ arpreq.arp_pa.sa_family = AF_INET;
+ INET_ADDR(arpreq.arp_pa) = hisaddr;
+ arpreq.arp_flags = ATF_PERM | ATF_PUBL;
+ if (ioctl(sockfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
+ syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
+ return 0;
+ }
+
+ proxy_arp_addr = hisaddr;
+ return 1;
+}
+
+/*
+ * cifproxyarp - Delete the proxy ARP entry for the peer.
+ */
+int
+cifproxyarp(unit, hisaddr)
+ int unit;
+ u_int32_t hisaddr;
+{
+ struct arpreq arpreq;
+
+ bzero(&arpreq, sizeof(arpreq));
+ arpreq.arp_pa.sa_family = AF_INET;
+ INET_ADDR(arpreq.arp_pa) = hisaddr;
+ if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
+ syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
+ return 0;
+ }
+
+ proxy_arp_addr = 0;
+ return 1;
+}
+
+/*
+ * get_ether_addr - get the hardware address of an interface on the
+ * the same subnet as ipaddr.
+ */
+#define MAX_IFS 32
+
+static int
+get_ether_addr(ipaddr, hwaddr)
+ u_int32_t ipaddr;
+ struct sockaddr *hwaddr;
+{
+ struct ifreq *ifr, *ifend;
+ u_int32_t ina, mask;
+ struct ifreq ifreq;
+ struct ifconf ifc;
+ struct ifreq ifs[MAX_IFS];
+ int nit_fd;
+
+ ifc.ifc_len = sizeof(ifs);
+ ifc.ifc_req = ifs;
+ if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
+ syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
+ return 0;
+ }
+
+ /*
+ * Scan through looking for an interface with an Internet
+ * address on the same subnet as `ipaddr'.
+ */
+ ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
+ for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
+ ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
+ if (ifr->ifr_addr.sa_family == AF_INET) {
+
+ /*
+ * Check that the interface is up, and not point-to-point
+ * or loopback.
+ */
+ strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
+ if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
+ continue;
+ if ((ifreq.ifr_flags &
+ (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
+ != (IFF_UP|IFF_BROADCAST))
+ continue;
+
+ /*
+ * Get its netmask and check that it's on the right subnet.
+ */
+ if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
+ continue;
+ ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
+ mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
+ if ((ipaddr & mask) != (ina & mask))
+ continue;
+
+ break;
+ }
+ }
+
+ if (ifr >= ifend)
+ return 0;
+ syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
+
+ /*
+ * Grab the physical address for this interface.
+ */
+ if ((nit_fd = open("/dev/nit", O_RDONLY)) < 0) {
+ syslog(LOG_ERR, "Couldn't open /dev/nit: %m");
+ return 0;
+ }
+ strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
+ if (ioctl(nit_fd, NIOCBIND, &ifreq) < 0
+ || ioctl(nit_fd, SIOCGIFADDR, &ifreq) < 0) {
+ syslog(LOG_ERR, "Couldn't get hardware address for %s: %m",
+ ifreq.ifr_name);
+ close(nit_fd);
+ return 0;
+ }
+
+ hwaddr->sa_family = AF_UNSPEC;
+ memcpy(hwaddr->sa_data, ifreq.ifr_addr.sa_data, 6);
+ close(nit_fd);
+ return 1;
+}
+
+#define WTMPFILE "/usr/adm/wtmp"
+
+int
+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);
+}
+
+/*
+ * Return user specified netmask, modified by any mask we might determine
+ * for address `addr' (in network byte order).
+ * Here we scan through the system's list of interfaces, looking for
+ * any non-point-to-point interfaces which might appear to be on the same
+ * network as `addr'. If we find any, we OR in their netmask to the
+ * user-specified netmask.
+ */
+u_int32_t
+GetMask(addr)
+ u_int32_t addr;
+{
+ u_int32_t mask, nmask, ina;
+ struct ifreq *ifr, *ifend, ifreq;
+ struct ifconf ifc;
+
+ addr = ntohl(addr);
+ if (IN_CLASSA(addr)) /* determine network mask for address class */
+ nmask = IN_CLASSA_NET;
+ else if (IN_CLASSB(addr))
+ nmask = IN_CLASSB_NET;
+ else
+ nmask = IN_CLASSC_NET;
+ /* class D nets are disallowed by bad_ip_adrs */
+ mask = netmask | htonl(nmask);
+
+ /*
+ * Scan through the system's network interfaces.
+ */
+ ifc.ifc_len = MAX_IFS * sizeof(struct ifreq);
+ ifc.ifc_req = alloca(ifc.ifc_len);
+ if (ifc.ifc_req == 0)
+ return mask;
+ if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
+ syslog(LOG_WARNING, "Couldn't get system interface list: %m");
+ return mask;
+ }
+ ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
+ for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
+ /*
+ * Check the interface's internet address.
+ */
+ if (ifr->ifr_addr.sa_family != AF_INET)
+ continue;
+ ina = INET_ADDR(ifr->ifr_addr);
+ if ((ntohl(ina) & nmask) != (addr & nmask))
+ continue;
+ /*
+ * Check that the interface is up, and not point-to-point or loopback.
+ */
+ strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
+ if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
+ continue;
+ if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
+ != IFF_UP)
+ continue;
+ /*
+ * Get its netmask and OR it into our mask.
+ */
+ if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
+ continue;
+ mask |= INET_ADDR(ifreq.ifr_addr);
+ }
+
+ return mask;
+}
+
+static int
+strioctl(fd, cmd, ptr, ilen, olen)
+ int fd, cmd, ilen, olen;
+ void *ptr;
+{
+ struct strioctl str;
+
+ str.ic_cmd = cmd;
+ str.ic_timout = 0;
+ str.ic_len = ilen;
+ str.ic_dp = ptr;
+ if (ioctl(fd, I_STR, &str) == -1)
+ return -1;
+ if (str.ic_len != olen)
+ syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
+ olen, str.ic_len, cmd);
+ return 0;
+}
+
+/*
+ * Code for locking/unlocking the serial device.
+ * This code is derived from chat.c.
+ */
+
+#if !defined(HDB) && !defined(SUNOS3)
+#define HDB 1 /* ascii lock files are the default */
+#endif
+
+#ifndef LOCK_DIR
+# if HDB
+# define PIDSTRING
+# define LOCK_PREFIX "/usr/spool/locks/LCK.."
+# else /* HDB */
+# define LOCK_PREFIX "/usr/spool/uucp/LCK.."
+# endif /* HDB */
+#endif /* LOCK_DIR */
+
+static char *lock_file; /* name of lock file created */
+
+/*
+ * lock - create a lock file for the named device.
+ */
+int
+lock(dev)
+ char *dev;
+{
+ char hdb_lock_buffer[12];
+ int fd, pid, n;
+ char *p;
+
+ 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;
+ }
+}
+
+/*
+ * SunOS doesn't have strtoul :-(
+ */
+unsigned long
+strtoul(str, ptr, base)
+ char *str, **ptr;
+ int base;
+{
+ return (unsigned long) strtol(str, ptr, base);
+}
projects / ppp.git / commitdiff