+++ /dev/null
-/*
- * System-dependent procedures for pppd under SunOS 4.
- *
- * Copyright (c) 1994-2002 Paul Mackerras. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. The name(s) of the authors of this software must not be used to
- * endorse or promote products derived from this software without
- * prior written permission.
- *
- * 3. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by Paul Mackerras
- * <paulus@samba.org>".
- *
- * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
- * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
- * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
- * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * Derived from main.c and pppd.h, which are:
- *
- * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The name "Carnegie Mellon University" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For permission or any legal
- * details, please contact
- * Office of Technology Transfer
- * Carnegie Mellon University
- * 5000 Forbes Avenue
- * Pittsburgh, PA 15213-3890
- * (412) 268-4387, fax: (412) 268-7395
- * tech-transfer@andrew.cmu.edu
- *
- * 4. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by Computing Services
- * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
- *
- * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
- * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
- * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
- * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#define RCSID "$Id: sys-sunos4.c,v 1.33 2004/11/04 10:02:26 paulus Exp $"
-
-#include <stdio.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <termios.h>
-#include <signal.h>
-#include <malloc.h>
-#include <utmp.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/sockio.h>
-#include <sys/stream.h>
-#include <sys/stropts.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/poll.h>
-#include <net/if.h>
-#include <net/if_arp.h>
-#include <net/nit_if.h>
-#include <net/route.h>
-#include <net/ppp_defs.h>
-#include <net/pppio.h>
-#include <netinet/in.h>
-
-#include "pppd.h"
-
-#if defined(sun) && defined(sparc)
-#include <alloca.h>
-#ifndef __GNUC__
-extern void *alloca();
-#endif
-#endif /*sparc*/
-
-static const char rcsid[] = RCSID;
-
-static int pppfd;
-static int fdmuxid = -1;
-static int iffd;
-static int sockfd;
-
-static int restore_term;
-static struct termios inittermios;
-static struct winsize wsinfo; /* Initial window size info */
-static pid_t parent_pid; /* PID of our parent */
-
-extern u_char inpacket_buf[]; /* borrowed from main.c */
-
-#define MAX_POLLFDS 32
-static struct pollfd pollfds[MAX_POLLFDS];
-static int n_pollfds;
-
-static int link_mtu, link_mru;
-
-#define NMODULES 32
-static int tty_nmodules;
-static char tty_modules[NMODULES][FMNAMESZ+1];
-
-static int if_is_up; /* Interface has been marked up */
-static u_int32_t ifaddrs[2]; /* local and remote addresses */
-static u_int32_t default_route_gateway; /* Gateway for default route added */
-static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
-
-/* Prototypes for procedures local to this file. */
-static int translate_speed __P((int));
-static int baud_rate_of __P((int));
-static int get_ether_addr __P((u_int32_t, struct sockaddr *));
-static int strioctl __P((int, int, void *, int, int));
-
-
-/*
- * sys_init - System-dependent initialization.
- */
-void
-sys_init()
-{
- int x;
-
- /* Get an internet socket for doing socket ioctl's on. */
- if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
- fatal("Couldn't create IP socket: %m");
-
- /*
- * We may want to send a SIGHUP to the session leader associated
- * with our controlling terminal later. Because SunOS doesn't
- * have getsid(), we make do with sending the signal to our
- * parent process.
- */
- parent_pid = getppid();
-
- /*
- * Open the ppp device.
- */
- pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
- if (pppfd < 0)
- fatal("Can't open /dev/ppp: %m");
- if (kdebugflag) {
- x = PPPDBG_LOG + PPPDBG_DRIVER;
- strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
- }
-
- /* Assign a new PPA and get its unit number. */
- if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
- fatal("Can't create new PPP interface: %m");
-
- /*
- * Open the ppp device again and push the if_ppp module on it.
- */
- iffd = open("/dev/ppp", O_RDWR, 0);
- if (iffd < 0)
- fatal("Can't open /dev/ppp (2): %m");
- if (kdebugflag) {
- x = PPPDBG_LOG + PPPDBG_DRIVER;
- strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
- }
- if (strioctl(iffd, PPPIO_ATTACH, &ifunit, sizeof(int), 0) < 0)
- fatal("Couldn't attach ppp interface to device: %m");
- if (ioctl(iffd, I_PUSH, "if_ppp") < 0)
- fatal("Can't push ppp interface module: %m");
- if (kdebugflag) {
- x = PPPDBG_LOG + PPPDBG_IF;
- strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
- }
- if (strioctl(iffd, PPPIO_NEWPPA, &ifunit, sizeof(int), 0) < 0)
- fatal("Couldn't create ppp interface unit: %m");
- x = PPP_IP;
- if (strioctl(iffd, PPPIO_BIND, &x, sizeof(int), 0) < 0)
- fatal("Couldn't bind ppp interface to IP SAP: %m");
-
- n_pollfds = 0;
-}
-
-/*
- * sys_cleanup - restore any system state we modified before exiting:
- * mark the interface down, delete default route and/or proxy arp entry.
- * This shouldn't call die() because it's called from die().
- */
-void
-sys_cleanup()
-{
- if (if_is_up)
- sifdown(0);
- if (ifaddrs[0])
- cifaddr(0, ifaddrs[0], ifaddrs[1]);
- if (default_route_gateway)
- cifdefaultroute(0, 0, default_route_gateway);
- if (proxy_arp_addr)
- cifproxyarp(0, proxy_arp_addr);
-}
-
-/*
- * sys_close - Clean up in a child process before execing.
- */
-void
-sys_close()
-{
- close(iffd);
- close(pppfd);
- close(sockfd);
-}
-
-/*
- * sys_check_options - check the options that the user specified
- */
-int
-sys_check_options()
-{
- return 1;
-}
-
-#if 0
-/*
- * daemon - Detach us from controlling terminal session.
- */
-int
-daemon(nochdir, noclose)
- int nochdir, noclose;
-{
- int pid;
-
- if ((pid = fork()) < 0)
- return -1;
- if (pid != 0)
- exit(0); /* parent dies */
- setsid();
- if (!nochdir)
- chdir("/");
- if (!noclose) {
- fclose(stdin); /* don't need stdin, stdout, stderr */
- fclose(stdout);
- fclose(stderr);
- }
- return 0;
-}
-#endif
-
-/*
- * ppp_available - check whether the system has any ppp interfaces
- */
-int
-ppp_available()
-{
- struct stat buf;
-
- return stat("/dev/ppp", &buf) >= 0;
-}
-
-/*
- * tty_establish_ppp - Turn the serial port into a ppp interface.
- */
-int
-tty_establish_ppp(fd)
- int fd;
-{
- int i;
-
- /* Pop any existing modules off the tty stream. */
- for (i = 0;; ++i)
- if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
- || ioctl(fd, I_POP, 0) < 0)
- break;
- tty_nmodules = i;
-
- /* Push the async hdlc module and the compressor module. */
- if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0)
- fatal("Couldn't push PPP Async HDLC module: %m");
- if (ioctl(fd, I_PUSH, "ppp_comp") < 0)
- error("Couldn't push PPP compression module: %m");
-
- /* Link the serial port under the PPP multiplexor. */
- if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0)
- fatal("Can't link tty to PPP mux: %m");
-
- return pppfd;
-}
-
-/*
- * disestablish_ppp - Restore the serial port to normal operation.
- * It attempts to reconstruct the stream with the previously popped
- * modules. This shouldn't call die() because it's called from die().
- */
-void
-tty_disestablish_ppp(fd)
- int fd;
-{
- int i;
-
- if (fdmuxid >= 0) {
- if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
- if (!hungup)
- error("Can't unlink tty from PPP mux: %m");
- }
- fdmuxid = -1;
-
- if (!hungup) {
- while (ioctl(fd, I_POP, 0) >= 0)
- ;
- for (i = tty_nmodules - 1; i >= 0; --i)
- if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
- error("Couldn't restore tty module %s: %m",
- tty_modules[i]);
- }
- if (hungup && default_device && parent_pid > 0) {
- /*
- * If we have received a hangup, we need to send a SIGHUP
- * to the terminal's controlling process. The reason is
- * that the original stream head for the terminal hasn't
- * seen the M_HANGUP message (it went up through the ppp
- * driver to the stream head for our fd to /dev/ppp).
- * Actually we send the signal to the process that invoked
- * pppd, since SunOS doesn't have getsid().
- */
- kill(parent_pid, SIGHUP);
- }
- }
-}
-
-/*
- * Check whether the link seems not to be 8-bit clean.
- */
-void
-clean_check()
-{
- int x;
- char *s;
-
- if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
- return;
- s = NULL;
- switch (~x) {
- case RCV_B7_0:
- s = "bit 7 set to 1";
- break;
- case RCV_B7_1:
- s = "bit 7 set to 0";
- break;
- case RCV_EVNP:
- s = "odd parity";
- break;
- case RCV_ODDP:
- s = "even parity";
- break;
- }
- if (s != NULL) {
- warn("Serial link is not 8-bit clean:");
- warn("All received characters had %s", s);
- }
-}
-
-/*
- * List of valid speeds.
- */
-struct speed {
- int speed_int, speed_val;
-} speeds[] = {
-#ifdef B50
- { 50, B50 },
-#endif
-#ifdef B75
- { 75, B75 },
-#endif
-#ifdef B110
- { 110, B110 },
-#endif
-#ifdef B134
- { 134, B134 },
-#endif
-#ifdef B150
- { 150, B150 },
-#endif
-#ifdef B200
- { 200, B200 },
-#endif
-#ifdef B300
- { 300, B300 },
-#endif
-#ifdef B600
- { 600, B600 },
-#endif
-#ifdef B1200
- { 1200, B1200 },
-#endif
-#ifdef B1800
- { 1800, B1800 },
-#endif
-#ifdef B2000
- { 2000, B2000 },
-#endif
-#ifdef B2400
- { 2400, B2400 },
-#endif
-#ifdef B3600
- { 3600, B3600 },
-#endif
-#ifdef B4800
- { 4800, B4800 },
-#endif
-#ifdef B7200
- { 7200, B7200 },
-#endif
-#ifdef B9600
- { 9600, B9600 },
-#endif
-#ifdef B19200
- { 19200, B19200 },
-#endif
-#ifdef B38400
- { 38400, B38400 },
-#endif
-#ifdef EXTA
- { 19200, EXTA },
-#endif
-#ifdef EXTB
- { 38400, EXTB },
-#endif
-#ifdef B57600
- { 57600, B57600 },
-#endif
-#ifdef B115200
- { 115200, B115200 },
-#endif
- { 0, 0 }
-};
-
-/*
- * Translate from bits/second to a speed_t.
- */
-static int
-translate_speed(bps)
- int bps;
-{
- struct speed *speedp;
-
- if (bps == 0)
- return 0;
- for (speedp = speeds; speedp->speed_int; speedp++)
- if (bps == speedp->speed_int)
- return speedp->speed_val;
- warn("speed %d not supported", bps);
- return 0;
-}
-
-/*
- * Translate from a speed_t to bits/second.
- */
-static int
-baud_rate_of(speed)
- int speed;
-{
- struct speed *speedp;
-
- if (speed == 0)
- return 0;
- for (speedp = speeds; speedp->speed_int; speedp++)
- if (speed == speedp->speed_val)
- return speedp->speed_int;
- return 0;
-}
-
-/*
- * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
- * at the requested speed, etc. If `local' is true, set CLOCAL
- * regardless of whether the modem option was specified.
- */
-void
-set_up_tty(fd, local)
- int fd, local;
-{
- int speed;
- struct termios tios;
-
- if (tcgetattr(fd, &tios) < 0)
- fatal("tcgetattr: %m");
-
- if (!restore_term) {
- inittermios = tios;
- ioctl(fd, TIOCGWINSZ, &wsinfo);
- }
-
- tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
- if (crtscts > 0)
- tios.c_cflag |= CRTSCTS;
- else if (crtscts < 0)
- tios.c_cflag &= ~CRTSCTS;
-
- tios.c_cflag |= CS8 | CREAD | HUPCL;
- if (local || !modem)
- tios.c_cflag |= CLOCAL;
- tios.c_iflag = IGNBRK | IGNPAR;
- tios.c_oflag = 0;
- tios.c_lflag = 0;
- tios.c_cc[VMIN] = 1;
- tios.c_cc[VTIME] = 0;
-
- if (crtscts == -2) {
- tios.c_iflag |= IXON | IXOFF;
- tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
- tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
- }
-
- speed = translate_speed(inspeed);
- if (speed) {
- cfsetospeed(&tios, speed);
- cfsetispeed(&tios, speed);
- } else {
- speed = cfgetospeed(&tios);
- /*
- * We can't proceed if the serial port speed is 0,
- * since that implies that the serial port is disabled.
- */
- if (speed == B0)
- fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
- }
-
- if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
- fatal("tcsetattr: %m");
-
- baud_rate = inspeed = baud_rate_of(speed);
- restore_term = 1;
-}
-
-/*
- * restore_tty - restore the terminal to the saved settings.
- */
-void
-restore_tty(fd)
- int fd;
-{
- if (restore_term) {
- if (!default_device) {
- /*
- * Turn off echoing, because otherwise we can get into
- * a loop with the tty and the modem echoing to each other.
- * We presume we are the sole user of this tty device, so
- * when we close it, it will revert to its defaults anyway.
- */
- inittermios.c_lflag &= ~(ECHO | ECHONL);
- }
- if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
- if (!hungup && errno != ENXIO)
- warn("tcsetattr: %m");
- ioctl(fd, TIOCSWINSZ, &wsinfo);
- restore_term = 0;
- }
-}
-
-/*
- * setdtr - control the DTR line on the serial port.
- * This is called from die(), so it shouldn't call die().
- */
-void
-setdtr(fd, on)
-int fd, on;
-{
- int modembits = TIOCM_DTR;
-
- ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
-}
-
-/*
- * open_loopback - open the device we use for getting packets
- * in demand mode. Under SunOS, we use our existing fd
- * to the ppp driver.
- */
-int
-open_ppp_loopback()
-{
- return pppfd;
-}
-
-/*
- * output - Output PPP packet.
- */
-void
-output(unit, p, len)
- int unit;
- u_char *p;
- int len;
-{
- struct strbuf data;
- int retries;
- struct pollfd pfd;
-
- dump_packet("sent", p, len);
- if (snoop_send_hook) snoop_send_hook(p, len);
-
- data.len = len;
- data.buf = (caddr_t) p;
- retries = 4;
- while (putmsg(pppfd, NULL, &data, 0) < 0) {
- if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
- if (errno != ENXIO)
- error("Couldn't send packet: %m");
- break;
- }
- pfd.fd = pppfd;
- pfd.events = POLLOUT;
- poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
- }
-}
-
-
-/*
- * wait_input - wait until there is data available,
- * for the length of time specified by *timo (indefinite
- * if timo is NULL).
- */
-void
-wait_input(timo)
- struct timeval *timo;
-{
- int t;
-
- t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
- if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR) {
- if (errno != EAGAIN)
- fatal("poll: %m");
- /* we can get EAGAIN on a heavily loaded system,
- * just wait a short time and try again. */
- usleep(50000);
- }
-}
-
-/*
- * add_fd - add an fd to the set that wait_input waits for.
- */
-void add_fd(fd)
- int fd;
-{
- int n;
-
- for (n = 0; n < n_pollfds; ++n)
- if (pollfds[n].fd == fd)
- return;
- if (n_pollfds < MAX_POLLFDS) {
- pollfds[n_pollfds].fd = fd;
- pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
- ++n_pollfds;
- } else
- error("Too many inputs!");
-}
-
-/*
- * remove_fd - remove an fd from the set that wait_input waits for.
- */
-void remove_fd(fd)
- int fd;
-{
- int n;
-
- for (n = 0; n < n_pollfds; ++n) {
- if (pollfds[n].fd == fd) {
- while (++n < n_pollfds)
- pollfds[n-1] = pollfds[n];
- --n_pollfds;
- break;
- }
- }
-}
-
-#if 0
-/*
- * wait_loop_output - wait until there is data available on the
- * loopback, for the length of time specified by *timo (indefinite
- * if timo is NULL).
- */
-void
-wait_loop_output(timo)
- struct timeval *timo;
-{
- wait_input(timo);
-}
-
-/*
- * wait_time - wait for a given length of time or until a
- * signal is received.
- */
-void
-wait_time(timo)
- struct timeval *timo;
-{
- int n;
-
- n = select(0, NULL, NULL, NULL, timo);
- if (n < 0 && errno != EINTR)
- fatal("select: %m");
-}
-#endif
-
-/*
- * read_packet - get a PPP packet from the serial device.
- */
-int
-read_packet(buf)
- u_char *buf;
-{
- struct strbuf ctrl, data;
- int flags, len;
- unsigned char ctrlbuf[64];
-
- for (;;) {
- data.maxlen = PPP_MRU + PPP_HDRLEN;
- data.buf = (caddr_t) buf;
- ctrl.maxlen = sizeof(ctrlbuf);
- ctrl.buf = (caddr_t) ctrlbuf;
- flags = 0;
- len = getmsg(pppfd, &ctrl, &data, &flags);
- if (len < 0) {
- if (errno == EAGAIN || errno == EINTR)
- return -1;
- fatal("Error reading packet: %m");
- }
-
- if (ctrl.len <= 0)
- return data.len;
-
- /*
- * Got a M_PROTO or M_PCPROTO message. Huh?
- */
- if (debug)
- dbglog("got ctrl msg len=%d", ctrl.len);
-
- }
-}
-
-/*
- * get_loop_output - get outgoing packets from the ppp device,
- * and detect when we want to bring the real link up.
- * Return value is 1 if we need to bring up the link, 0 otherwise.
- */
-int
-get_loop_output()
-{
- int len;
- int rv = 0;
-
- while ((len = read_packet(inpacket_buf)) > 0) {
- if (loop_frame(inpacket_buf, len))
- rv = 1;
- }
- return rv;
-}
-
-/*
- * netif_set_mtu - set the MTU on the PPP network interface.
- */
-void
-netif_set_mtu(unit, mtu)
- int unit, mtu;
-{
- struct ifreq ifr;
-
- memset(&ifr, 0, sizeof(ifr));
- strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
- ifr.ifr_metric = link_mtu;
- if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) {
- error("Couldn't set IP MTU: %m");
- }
-}
-
-/*
- * tty_send_config - configure the transmit characteristics of
- * the ppp interface.
- */
-int
-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) {
- ++error_count;
- return;
- }
- error("Couldn't set MTU: %m");
- }
- if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0)
- error("Couldn't set transmit ACCM: %m");
- cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
- cf[1] = COMP_PROT | COMP_AC;
- if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0)
- error("Couldn't set prot/AC compression: %m");
-}
-
-/*
- * tty_set_xaccm - set the extended transmit ACCM for the interface.
- */
-void
-tty_set_xaccm(unit, accm)
- int unit;
- ext_accm accm;
-{
- if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
- if (!hungup || errno != ENXIO)
- warn("Couldn't set extended ACCM: %m");
- }
-}
-
-/*
- * tty_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) {
- ++error_count;
- return;
- }
- error("Couldn't set MRU: %m");
- }
- if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0)
- error("Couldn't set receive ACCM: %m");
- cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
- cf[1] = DECOMP_PROT | DECOMP_AC;
- if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0)
- error("Couldn't set prot/AC decompression: %m");
-}
-
-/*
- * ccp_test - ask kernel whether a given compression method
- * is acceptable for use.
- */
-int
-ccp_test(unit, opt_ptr, opt_len, for_transmit)
- int unit, opt_len, for_transmit;
- u_char *opt_ptr;
-{
- if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
- opt_ptr, opt_len, 0) >= 0)
- return 1;
- return (errno == ENOSR)? 0: -1;
-}
-
-/*
- * ccp_flags_set - inform kernel about the current state of CCP.
- */
-void
-ccp_flags_set(unit, isopen, isup)
- int unit, isopen, isup;
-{
- int cf[2];
-
- cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
- cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
- if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
- if (!hungup || errno != ENXIO)
- error("Couldn't set kernel CCP state: %m");
- }
-}
-
-/*
- * get_idle_time - return how long the link has been idle.
- */
-int
-get_idle_time(u, ip)
- int u;
- struct ppp_idle *ip;
-{
- return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
-}
-
-/*
- * get_ppp_stats - return statistics for the link.
- */
-int
-get_ppp_stats(u, stats)
- int u;
- struct pppd_stats *stats;
-{
- struct ppp_stats s;
-
- if (strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
- error("Couldn't get link statistics: %m");
- return 0;
- }
- stats->bytes_in = s.p.ppp_ibytes;
- stats->bytes_out = s.p.ppp_obytes;
- stats->pkts_in = s.p.ppp_ipackets;
- stats->pkts_out = s.p.ppp_opackets;
- return 1;
-}
-
-
-/*
- * ccp_fatal_error - returns 1 if decompression was disabled as a
- * result of an error detected after decompression of a packet,
- * 0 otherwise. This is necessary because of patent nonsense.
- */
-int
-ccp_fatal_error(unit)
- int unit;
-{
- int cf[2];
-
- cf[0] = cf[1] = 0;
- if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
- if (errno != ENXIO && errno != EINVAL)
- error("Couldn't get compression flags: %m");
- return 0;
- }
- return cf[0] & CCP_FATALERROR;
-}
-
-/*
- * sifvjcomp - config tcp header compression
- */
-int
-sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
- int u, vjcomp, xcidcomp, xmaxcid;
-{
- int cf[2];
- char maxcid[2];
-
- if (vjcomp) {
- maxcid[0] = xcidcomp;
- maxcid[1] = 15; /* XXX should be rmaxcid */
- if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
- error("Couldn't initialize VJ compression: %m");
- }
- }
-
- cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
- + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
- cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
- if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
- if (vjcomp)
- error("Couldn't enable VJ compression: %m");
- }
-
- return 1;
-}
-
-/*
- * sifup - Config the interface up and enable IP packets to pass.
- */
-int
-sifup(u)
- int u;
-{
- struct ifreq ifr;
-
- strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
- if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
- error("Couldn't mark interface up (get): %m");
- return 0;
- }
- ifr.ifr_flags |= IFF_UP;
- if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
- error("Couldn't mark interface up (set): %m");
- return 0;
- }
- if_is_up = 1;
- return 1;
-}
-
-/*
- * sifdown - Config the interface down and disable IP.
- */
-int
-sifdown(u)
- int u;
-{
- struct ifreq ifr;
-
- strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
- if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
- error("Couldn't mark interface down (get): %m");
- return 0;
- }
- if ((ifr.ifr_flags & IFF_UP) != 0) {
- ifr.ifr_flags &= ~IFF_UP;
- if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
- error("Couldn't mark interface down (set): %m");
- return 0;
- }
- }
- if_is_up = 0;
- return 1;
-}
-
-/*
- * sifnpmode - Set the mode for handling packets for a given NP.
- */
-int
-sifnpmode(u, proto, mode)
- int u;
- int proto;
- enum NPmode mode;
-{
- int npi[2];
-
- npi[0] = proto;
- npi[1] = (int) mode;
- if (strioctl(pppfd, PPPIO_NPMODE, npi, 2 * sizeof(int), 0) < 0) {
- error("ioctl(set NP %d mode to %d): %m", proto, mode);
- return 0;
- }
- return 1;
-}
-
-#define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
-
-/*
- * sifaddr - Config the interface IP addresses and netmask.
- */
-int
-sifaddr(u, o, h, m)
- int u;
- u_int32_t o, h, m;
-{
- struct ifreq ifr;
-
- memset(&ifr, 0, sizeof(ifr));
- strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
- ifr.ifr_addr.sa_family = AF_INET;
- INET_ADDR(ifr.ifr_addr) = m;
- if (ioctl(sockfd, SIOCSIFNETMASK, &ifr) < 0) {
- error("Couldn't set IP netmask: %m");
- }
- ifr.ifr_addr.sa_family = AF_INET;
- INET_ADDR(ifr.ifr_addr) = o;
- if (ioctl(sockfd, SIOCSIFADDR, &ifr) < 0) {
- error("Couldn't set local IP address: %m");
- }
- ifr.ifr_dstaddr.sa_family = AF_INET;
- INET_ADDR(ifr.ifr_dstaddr) = h;
- if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) {
- error("Couldn't set remote IP address: %m");
- }
-#if 0 /* now done in ppp_send_config */
- ifr.ifr_metric = link_mtu;
- if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) {
- error("Couldn't set IP MTU: %m");
- }
-#endif
- ifaddrs[0] = o;
- ifaddrs[1] = h;
-
- return 1;
-}
-
-/*
- * cifaddr - Clear the interface IP addresses, and delete routes
- * through the interface if possible.
- */
-int
-cifaddr(u, o, h)
- int u;
- u_int32_t o, h;
-{
- struct rtentry rt;
-
- bzero(&rt, sizeof(rt));
- rt.rt_dst.sa_family = AF_INET;
- INET_ADDR(rt.rt_dst) = h;
- rt.rt_gateway.sa_family = AF_INET;
- INET_ADDR(rt.rt_gateway) = o;
- rt.rt_flags = RTF_HOST;
- if (ioctl(sockfd, SIOCDELRT, &rt) < 0)
- error("Couldn't delete route through interface: %m");
- ifaddrs[0] = 0;
- return 1;
-}
-
-/*
- * sifdefaultroute - assign a default route through the address given.
- */
-int
-sifdefaultroute(u, l, g)
- int u;
- u_int32_t l, g;
-{
- struct rtentry rt;
-
- bzero(&rt, sizeof(rt));
- rt.rt_dst.sa_family = AF_INET;
- INET_ADDR(rt.rt_dst) = 0;
- rt.rt_gateway.sa_family = AF_INET;
- INET_ADDR(rt.rt_gateway) = g;
- rt.rt_flags = RTF_GATEWAY;
-
- if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
- error("Can't add default route: %m");
- return 0;
- }
-
- default_route_gateway = g;
- return 1;
-}
-
-/*
- * cifdefaultroute - delete a default route through the address given.
- */
-int
-cifdefaultroute(u, l, g)
- int u;
- u_int32_t l, g;
-{
- struct rtentry rt;
-
- bzero(&rt, sizeof(rt));
- rt.rt_dst.sa_family = AF_INET;
- INET_ADDR(rt.rt_dst) = 0;
- rt.rt_gateway.sa_family = AF_INET;
- INET_ADDR(rt.rt_gateway) = g;
- rt.rt_flags = RTF_GATEWAY;
-
- if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
- error("Can't delete default route: %m");
- return 0;
- }
-
- default_route_gateway = 0;
- return 1;
-}
-
-/*
- * sifproxyarp - Make a proxy ARP entry for the peer.
- */
-int
-sifproxyarp(unit, hisaddr)
- int unit;
- u_int32_t hisaddr;
-{
- struct arpreq arpreq;
-
- bzero(&arpreq, sizeof(arpreq));
- if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
- return 0;
-
- arpreq.arp_pa.sa_family = AF_INET;
- INET_ADDR(arpreq.arp_pa) = hisaddr;
- arpreq.arp_flags = ATF_PERM | ATF_PUBL;
- if (ioctl(sockfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
- error("Couldn't set proxy ARP entry: %m");
- return 0;
- }
-
- proxy_arp_addr = hisaddr;
- return 1;
-}
-
-/*
- * cifproxyarp - Delete the proxy ARP entry for the peer.
- */
-int
-cifproxyarp(unit, hisaddr)
- int unit;
- u_int32_t hisaddr;
-{
- struct arpreq arpreq;
-
- bzero(&arpreq, sizeof(arpreq));
- arpreq.arp_pa.sa_family = AF_INET;
- INET_ADDR(arpreq.arp_pa) = hisaddr;
- if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
- error("Couldn't delete proxy ARP entry: %m");
- return 0;
- }
-
- proxy_arp_addr = 0;
- return 1;
-}
-
-/*
- * get_ether_addr - get the hardware address of an interface on the
- * the same subnet as ipaddr.
- */
-#define MAX_IFS 32
-
-static int
-get_ether_addr(ipaddr, hwaddr)
- u_int32_t ipaddr;
- struct sockaddr *hwaddr;
-{
- struct ifreq *ifr, *ifend;
- u_int32_t ina, mask;
- struct ifreq ifreq;
- struct ifconf ifc;
- struct ifreq ifs[MAX_IFS];
- int nit_fd;
-
- ifc.ifc_len = sizeof(ifs);
- ifc.ifc_req = ifs;
- if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
- error("ioctl(SIOCGIFCONF): %m");
- return 0;
- }
-
- /*
- * Scan through looking for an interface with an Internet
- * address on the same subnet as `ipaddr'.
- */
- ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
- for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
- ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
- if (ifr->ifr_addr.sa_family == AF_INET) {
-
- /*
- * Check that the interface is up, and not point-to-point
- * or loopback.
- */
- strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
- if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
- continue;
- if ((ifreq.ifr_flags &
- (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
- != (IFF_UP|IFF_BROADCAST))
- continue;
-
- /*
- * Get its netmask and check that it's on the right subnet.
- */
- if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
- continue;
- ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
- mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
- if ((ipaddr & mask) != (ina & mask))
- continue;
-
- break;
- }
- }
-
- if (ifr >= ifend)
- return 0;
- info("found interface %s for proxy arp", ifr->ifr_name);
-
- /*
- * Grab the physical address for this interface.
- */
- if ((nit_fd = open("/dev/nit", O_RDONLY)) < 0) {
- error("Couldn't open /dev/nit: %m");
- return 0;
- }
- strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
- if (ioctl(nit_fd, NIOCBIND, &ifreq) < 0
- || ioctl(nit_fd, SIOCGIFADDR, &ifreq) < 0) {
- error("Couldn't get hardware address for %s: %m",
- ifreq.ifr_name);
- close(nit_fd);
- return 0;
- }
-
- hwaddr->sa_family = AF_UNSPEC;
- memcpy(hwaddr->sa_data, ifreq.ifr_addr.sa_data, 6);
- close(nit_fd);
- return 1;
-}
-
-/*
- * have_route_to - determine if the system has any route to
- * a given IP address.
- * For demand mode to work properly, we have to ignore routes
- * through our own interface.
- */
-int have_route_to(addr)
- u_int32_t addr;
-{
- return -1;
-}
-
-#define WTMPFILE "/usr/adm/wtmp"
-
-void
-logwtmp(line, name, host)
- const char *line, *name, *host;
-{
- int fd;
- struct stat buf;
- struct utmp ut;
-
- if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
- return;
- if (!fstat(fd, &buf)) {
- strncpy(ut.ut_line, line, sizeof(ut.ut_line));
- strncpy(ut.ut_name, name, sizeof(ut.ut_name));
- strncpy(ut.ut_host, host, sizeof(ut.ut_host));
- (void)time(&ut.ut_time);
- if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
- (void)ftruncate(fd, buf.st_size);
- }
- close(fd);
-}
-
-/*
- * Return user specified netmask, modified by any mask we might determine
- * for address `addr' (in network byte order).
- * Here we scan through the system's list of interfaces, looking for
- * any non-point-to-point interfaces which might appear to be on the same
- * network as `addr'. If we find any, we OR in their netmask to the
- * user-specified netmask.
- */
-u_int32_t
-GetMask(addr)
- u_int32_t addr;
-{
- u_int32_t mask, nmask, ina;
- struct ifreq *ifr, *ifend, ifreq;
- struct ifconf ifc;
-
- addr = ntohl(addr);
- if (IN_CLASSA(addr)) /* determine network mask for address class */
- nmask = IN_CLASSA_NET;
- else if (IN_CLASSB(addr))
- nmask = IN_CLASSB_NET;
- else
- nmask = IN_CLASSC_NET;
- /* class D nets are disallowed by bad_ip_adrs */
- mask = netmask | htonl(nmask);
-
- /*
- * Scan through the system's network interfaces.
- */
- ifc.ifc_len = MAX_IFS * sizeof(struct ifreq);
- ifc.ifc_req = alloca(ifc.ifc_len);
- if (ifc.ifc_req == 0)
- return mask;
- if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
- warn("Couldn't get system interface list: %m");
- return mask;
- }
- ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
- for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
- /*
- * Check the interface's internet address.
- */
- if (ifr->ifr_addr.sa_family != AF_INET)
- continue;
- ina = INET_ADDR(ifr->ifr_addr);
- if ((ntohl(ina) & nmask) != (addr & nmask))
- continue;
- /*
- * Check that the interface is up, and not point-to-point or loopback.
- */
- strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
- if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
- continue;
- if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
- != IFF_UP)
- continue;
- /*
- * Get its netmask and OR it into our mask.
- */
- if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
- continue;
- mask |= INET_ADDR(ifreq.ifr_addr);
- }
-
- return mask;
-}
-
-static int
-strioctl(fd, cmd, ptr, ilen, olen)
- int fd, cmd, ilen, olen;
- void *ptr;
-{
- struct strioctl str;
-
- str.ic_cmd = cmd;
- str.ic_timout = 0;
- str.ic_len = ilen;
- str.ic_dp = ptr;
- if (ioctl(fd, I_STR, &str) == -1)
- return -1;
- if (str.ic_len != olen)
- dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
- olen, str.ic_len, cmd);
- return 0;
-}
-
-/*
- * Use the hostid as part of the random number seed.
- */
-int
-get_host_seed()
-{
- return gethostid();
-}
-
-#if 0
-/*
- * Code for locking/unlocking the serial device.
- * This code is derived from chat.c.
- */
-
-#if !defined(HDB) && !defined(SUNOS3)
-#define HDB 1 /* ascii lock files are the default */
-#endif
-
-#ifndef LOCK_DIR
-# if HDB
-# define PIDSTRING
-# define LOCK_PREFIX "/usr/spool/locks/LCK.."
-# else /* HDB */
-# define LOCK_PREFIX "/usr/spool/uucp/LCK.."
-# endif /* HDB */
-#endif /* LOCK_DIR */
-
-static char *lock_file; /* name of lock file created */
-
-/*
- * lock - create a lock file for the named device.
- */
-int
-lock(dev)
- char *dev;
-{
- char hdb_lock_buffer[12];
- int fd, pid, n;
- char *p;
- size_t l;
-
- if ((p = strrchr(dev, '/')) != NULL)
- dev = p + 1;
- l = strlen(LOCK_PREFIX) + strlen(dev) + 1;
- lock_file = malloc(l);
- if (lock_file == NULL)
- novm("lock file name");
- slprintf(lock_file, l, "%s%s", LOCK_PREFIX, dev);
-
- while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
- if (errno == EEXIST
- && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
- /* Read the lock file to find out who has the device locked */
-#ifdef PIDSTRING
- n = read(fd, hdb_lock_buffer, 11);
- if (n > 0) {
- hdb_lock_buffer[n] = 0;
- pid = atoi(hdb_lock_buffer);
- }
-#else
- n = read(fd, &pid, sizeof(pid));
-#endif
- if (n <= 0) {
- error("Can't read pid from lock file %s", lock_file);
- close(fd);
- } else {
- if (kill(pid, 0) == -1 && errno == ESRCH) {
- /* pid no longer exists - remove the lock file */
- if (unlink(lock_file) == 0) {
- close(fd);
- notice("Removed stale lock on %s (pid %d)",
- dev, pid);
- continue;
- } else
- warn("Couldn't remove stale lock on %s",
- dev);
- } else
- notice("Device %s is locked by pid %d",
- dev, pid);
- }
- close(fd);
- } else
- error("Can't create lock file %s: %m", lock_file);
- free(lock_file);
- lock_file = NULL;
- return -1;
- }
-
-#ifdef PIDSTRING
- slprintf(hdb_lock_buffer, sizeof(hdb_lock_buffer), "%10d\n", getpid());
- write(fd, hdb_lock_buffer, 11);
-#else
- pid = getpid();
- write(fd, &pid, sizeof pid);
-#endif
-
- close(fd);
- return 0;
-}
-
-/*
- * unlock - remove our lockfile
- */
-void
-unlock()
-{
- if (lock_file) {
- unlink(lock_file);
- free(lock_file);
- lock_file = NULL;
- }
-}
-#endif /* lock stuff removed */
-
-/*
- * get_pty - get a pty master/slave pair and chown the slave side
- * to the uid given. Assumes slave_name points to >= 12 bytes of space.
- */
-int
-get_pty(master_fdp, slave_fdp, slave_name, uid)
- int *master_fdp;
- int *slave_fdp;
- char *slave_name;
- int uid;
-{
- int i, mfd, sfd;
- char pty_name[12];
- struct termios tios;
-
- sfd = -1;
- for (i = 0; i < 64; ++i) {
- slprintf(pty_name, sizeof(pty_name), "/dev/pty%c%x",
- 'p' + i / 16, i % 16);
- mfd = open(pty_name, O_RDWR, 0);
- if (mfd >= 0) {
- pty_name[5] = 't';
- sfd = open(pty_name, O_RDWR | O_NOCTTY, 0);
- if (sfd >= 0)
- break;
- close(mfd);
- }
- }
- if (sfd < 0)
- return 0;
-
- strlcpy(slave_name, pty_name, 12);
- *master_fdp = mfd;
- *slave_fdp = sfd;
- fchown(sfd, uid, -1);
- fchmod(sfd, S_IRUSR | S_IWUSR);
- if (tcgetattr(sfd, &tios) == 0) {
- tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB);
- tios.c_cflag |= CS8 | CREAD;
- tios.c_iflag = IGNPAR | CLOCAL;
- tios.c_oflag = 0;
- tios.c_lflag = 0;
- if (tcsetattr(sfd, TCSAFLUSH, &tios) < 0)
- warn("couldn't set attributes on pty: %m");
- } else
- warn("couldn't get attributes on pty: %m");
-
- return 1;
-}
-
-/*
- * SunOS doesn't have strtoul :-(
- */
-unsigned long
-strtoul(str, ptr, base)
- char *str, **ptr;
- int base;
-{
- return (unsigned long) strtol(str, ptr, base);
-}
-
-/*
- * Or strerror :-(
- */
-extern char *sys_errlist[];
-extern int sys_nerr;
-
-char *
-strerror(n)
- int n;
-{
- static char unknown[32];
-
- if (n > 0 && n < sys_nerr)
- return sys_errlist[n];
- slprintf(unknown, sizeof(unknown), "Error %d", n);
- return unknown;
-}
projects / ppp.git / blobdiff