- new_phase(PHASE_SERIALCONN);
-
- /*
- * Get a pty master/slave pair if the pty, notty, socket,
- * or record options were specified.
- */
- strlcpy(ppp_devnam, devnam, sizeof(ppp_devnam));
- pty_master = -1;
- pty_slave = -1;
- if (using_pty || record_file != NULL) {
- if (!get_pty(&pty_master, &pty_slave, ppp_devnam, uid)) {
- error("Couldn't allocate pseudo-tty");
- status = EXIT_FATAL_ERROR;
- goto fail;
- }
- set_up_tty(pty_slave, 1);
- }
-
- /*
- * Lock the device if we've been asked to.
- */
- status = EXIT_LOCK_FAILED;
- if (lockflag && !privopen) {
- if (lock(devnam) < 0)
- goto fail;
- locked = 1;
- }
-
- /*
- * Open the serial device and set it up to be the ppp interface.
- * First we open it in non-blocking mode so we can set the
- * various termios flags appropriately. If we aren't dialling
- * out and we want to use the modem lines, we reopen it later
- * in order to wait for the carrier detect signal from the modem.
- */
- hungup = 0;
- kill_link = 0;
- connector = doing_callback? callback_script: connect_script;
- if (devnam[0] != 0) {
- for (;;) {
- /* If the user specified the device name, become the
- user before opening it. */
- int err;
- if (!devnam_info.priv && !privopen)
- seteuid(uid);
- ttyfd = open(devnam, O_NONBLOCK | O_RDWR, 0);
- err = errno;
- if (!devnam_info.priv && !privopen)
- seteuid(0);
- if (ttyfd >= 0)
- break;
- errno = err;
- if (err != EINTR) {
- error("Failed to open %s: %m", devnam);
- status = EXIT_OPEN_FAILED;
- }
- if (!persist || err != EINTR)
- goto fail;
- }
- if ((fdflags = fcntl(ttyfd, F_GETFL)) == -1
- || fcntl(ttyfd, F_SETFL, fdflags & ~O_NONBLOCK) < 0)
- warn("Couldn't reset non-blocking mode on device: %m");
-
- /*
- * Do the equivalent of `mesg n' to stop broadcast messages.
- */
- if (fstat(ttyfd, &statbuf) < 0
- || fchmod(ttyfd, statbuf.st_mode & ~(S_IWGRP | S_IWOTH)) < 0) {
- warn("Couldn't restrict write permissions to %s: %m", devnam);
- } else
- tty_mode = statbuf.st_mode;
-
- /*
- * Set line speed, flow control, etc.
- * If we have a non-null connection or initializer script,
- * on most systems we set CLOCAL for now so that we can talk
- * to the modem before carrier comes up. But this has the
- * side effect that we might miss it if CD drops before we
- * get to clear CLOCAL below. On systems where we can talk
- * successfully to the modem with CLOCAL clear and CD down,
- * we could clear CLOCAL at this point.
- */
- set_up_tty(ttyfd, ((connector != NULL && connector[0] != 0)
- || initializer != NULL));
- real_ttyfd = ttyfd;
- }
-
- /*
- * If the pty, socket, notty and/or record option was specified,
- * start up the character shunt now.
- */
- status = EXIT_PTYCMD_FAILED;
- if (ptycommand != NULL) {
- if (record_file != NULL) {
- int ipipe[2], opipe[2], ok;
-
- if (pipe(ipipe) < 0 || pipe(opipe) < 0)
- fatal("Couldn't create pipes for record option: %m");
- ok = device_script(ptycommand, opipe[0], ipipe[1], 1) == 0
- && start_charshunt(ipipe[0], opipe[1]);
- close(ipipe[0]);
- close(ipipe[1]);
- close(opipe[0]);
- close(opipe[1]);
- if (!ok)
- goto fail;
- } else {
- if (device_script(ptycommand, pty_master, pty_master, 1) < 0)
- goto fail;
- ttyfd = pty_slave;
- close(pty_master);
- pty_master = -1;
- }
- } else if (pty_socket != NULL) {
- int fd = open_socket(pty_socket);
- if (fd < 0)
- goto fail;
- if (!start_charshunt(fd, fd))
- goto fail;
- } else if (notty) {
- if (!start_charshunt(0, 1))
- goto fail;
- } else if (record_file != NULL) {
- if (!start_charshunt(ttyfd, ttyfd))
- goto fail;
- }
-
- /* run connection script */
- if ((connector && connector[0]) || initializer) {
- if (real_ttyfd != -1) {
- /* XXX do this if doing_callback == CALLBACK_DIALIN? */
- if (!default_device && modem) {
- setdtr(real_ttyfd, 0); /* in case modem is off hook */
- sleep(1);
- setdtr(real_ttyfd, 1);
- }
- }
-
- if (initializer && initializer[0]) {
- if (device_script(initializer, ttyfd, ttyfd, 0) < 0) {
- error("Initializer script failed");
- status = EXIT_INIT_FAILED;
- goto fail;
- }
- if (kill_link)
- goto disconnect;
-
- info("Serial port initialized.");
- }
-
- if (connector && connector[0]) {
- if (device_script(connector, ttyfd, ttyfd, 0) < 0) {
- error("Connect script failed");
- status = EXIT_CONNECT_FAILED;
- goto fail;
- }
- if (kill_link)
- goto disconnect;
-
- info("Serial connection established.");
- }
-
- /* set line speed, flow control, etc.;
- clear CLOCAL if modem option */
- if (real_ttyfd != -1)
- set_up_tty(real_ttyfd, 0);
-
- if (doing_callback == CALLBACK_DIALIN)
- connector = NULL;
- }
-
- /* reopen tty if necessary to wait for carrier */
- if (connector == NULL && modem && devnam[0] != 0) {
- for (;;) {
- if ((i = open(devnam, O_RDWR)) >= 0)
- break;
- if (errno != EINTR) {
- error("Failed to reopen %s: %m", devnam);
- status = EXIT_OPEN_FAILED;
- }
- if (!persist || errno != EINTR || hungup || kill_link)
- goto fail;
- }
- close(i);
- }
-
- slprintf(numbuf, sizeof(numbuf), "%d", baud_rate);
- script_setenv("SPEED", numbuf);
-
- /* run welcome script, if any */
- if (welcomer && welcomer[0]) {
- if (device_script(welcomer, ttyfd, ttyfd, 0) < 0)
- warn("Welcome script failed");
- }
-
- /* set up the serial device as a ppp interface */
- fd_ppp = establish_ppp(ttyfd);
- if (fd_ppp < 0) {
- status = EXIT_FATAL_ERROR;
- goto disconnect;
- }
-
- if (!demand && ifunit >= 0) {
-
- info("Using interface ppp%d", ifunit);
- slprintf(ifname, sizeof(ifname), "ppp%d", ifunit);
- script_setenv("IFNAME", ifname);
-
- create_pidfile(); /* write pid to file */
- }
-
- /*
- * Start opening the connection and wait for
- * incoming events (reply, timeout, etc.).
- */
- notice("Connect: %s <--> %s", ifname, ppp_devnam);