diff options
Diffstat (limited to 'mdk-stage1/ppp/pppd/sys-sunos4.c')
| -rw-r--r-- | mdk-stage1/ppp/pppd/sys-sunos4.c | 1559 |
1 files changed, 1559 insertions, 0 deletions
diff --git a/mdk-stage1/ppp/pppd/sys-sunos4.c b/mdk-stage1/ppp/pppd/sys-sunos4.c new file mode 100644 index 000000000..3344948e9 --- /dev/null +++ b/mdk-stage1/ppp/pppd/sys-sunos4.c @@ -0,0 +1,1559 @@ +/* + * 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. + */ + +#define RCSID "$Id$" + +#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; + + if (debug) + dbglog("sent %P", p, len); + + data.len = len; + data.buf = (caddr_t) p; + retries = 4; + while (putmsg(pppfd, NULL, &data, 0) < 0) { + if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) { + if (errno != ENXIO) + error("Couldn't send packet: %m"); + break; + } + pfd.fd = pppfd; + pfd.events = POLLOUT; + poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */ + } +} + + +/* + * wait_input - wait until there is data available, + * for the length of time specified by *timo (indefinite + * if timo is NULL). + */ +void +wait_input(timo) + struct timeval *timo; +{ + int t; + + t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000; + if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR) { + 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; +} + +/* + * 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]; + struct ifreq ifr; + + link_mtu = mtu; + if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) { + if (hungup && errno == ENXIO) + return; + error("Couldn't set MTU: %m"); + } + if (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"); + } + + /* set mtu for ip as well */ + 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"); + } +} + +/* + * 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) + warn("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; + 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; + 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; +} |