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, 0 insertions, 1559 deletions
diff --git a/mdk-stage1/ppp/pppd/sys-sunos4.c b/mdk-stage1/ppp/pppd/sys-sunos4.c deleted file mode 100644 index 3344948e9..000000000 --- a/mdk-stage1/ppp/pppd/sys-sunos4.c +++ /dev/null @@ -1,1559 +0,0 @@ -/* - * 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; -} |