cpukit: remove pppd

Update #3850

1 files changed, 0 insertions, 892 deletions

diff --git a/cpukit/pppd/rtemsmain.c b/cpukit/pppd/rtemsmain.c
deleted file mode 100644
index 71cf94f297..0000000000
--- a/cpukit/pppd/rtemsmain.c
+++ /dev/null
@@ -1,892 +0,0 @@
-/*
- * main.c - Point-to-Point Protocol main module
- *
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University.  The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#include <stdio.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <signal.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <netdb.h>
-#include <pwd.h>
-#include <setjmp.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/stat.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-
-#include <rtems.h>
-#include <rtems/rtems_bsdnet.h>
-
-#include "pppd.h"
-#include "magic.h"
-#include "fsm.h"
-#include "lcp.h"
-#include "ipcp.h"
-#ifdef INET6
-#include "ipv6cp.h"
-#endif
-#include "upap.h"
-#include "chap.h"
-#include "ccp.h"
-#include "pathnames.h"
-#include "patchlevel.h"
-#include <rtems/rtemsdialer.h>
-
-#ifdef CBCP_SUPPORT
-#include "cbcp.h"
-#endif
-
-#ifdef IPX_CHANGE
-#include "ipxcp.h"
-#endif /* IPX_CHANGE */
-#ifdef AT_CHANGE
-#include "atcp.h"
-#endif
-
-/* interface vars */
-char ifname[32];		/* Interface name */
-int pppifunit;			/* Interface unit number */
-
-char hostname[MAXNAMELEN];	/* Our hostname */
-static char ppp_devnam[MAXPATHLEN]; /* name of PPP tty (maybe ttypx) */
-
-int pppd_ttyfd;			/* Serial port file descriptor */
-int baud_rate;			/* Actual bits/second for serial device */
-int hungup;			/* terminal has been hung up */
-int privileged;			/* we're running as real uid root */
-int need_holdoff;		/* need holdoff period before restarting */
-int detached;			/* have detached from terminal */
-struct stat devstat;		/* result of stat() on devnam */
-int prepass = 0;		/* doing prepass to find device name */
-int devnam_fixed;		/* set while in options.ttyxx file */
-volatile int pppd_status;		/* exit status for pppd */
-int unsuccess;			/* # unsuccessful connection attempts */
-int do_callback;		/* != 0 if we should do callback next */
-int doing_callback;		/* != 0 if we are doing callback */
-char *callback_script;		/* script for doing callback */
-dialerfp pppd_dialer;
-
-int (*holdoff_hook)(void) = NULL;
-int (*new_phase_hook)(int) = NULL;
-
-static int fd_ppp = -1;		/* fd for talking PPP */
-static int pty_master;		/* fd for master side of pty */
-static int pty_slave;		/* fd for slave side of pty */
-static int real_ttyfd;		/* fd for actual serial port (not pty) */
-
-int pppd_phase;			/* where the link is at */
-int pppd_kill_link;
-int open_ccp_flag;
-
-char **script_env;		/* Env. variable values for scripts */
-int s_env_nalloc;		/* # words avail at script_env */
-
-u_char outpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for outgoing packet */
-u_char inpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for incoming packet */
-
-char *no_ppp_msg = "Sorry - this system lacks PPP kernel support\n";
-
-static struct timeval start_time;	/* Time when link was started. */
-
-struct pppd_stats link_stats;
-int link_connect_time;
-int link_stats_valid;
-
-/* Prototypes for procedures local to this file. */
-
-static void cleanup(void);
-static void close_tty(void);
-static void get_input(void);
-static void calltimeout(void);
-static struct timeval *timeleft(struct timeval *);
-static void holdoff_end(void *);
-static int device_script(int, int, char *);
-
-extern	char	*ttyname(int);
-extern	char	*getlogin(void);
-int pppdmain(int, char *[]);
-
-/*
- * PPP Data Link Layer "protocol" table.
- * One entry per supported protocol.
- * The last entry must be NULL.
- */
-struct protent *protocols[] = {
-    &lcp_protent,
-    &pap_protent,
-    &chap_protent,
-#ifdef CBCP_SUPPORT
-    &cbcp_protent,
-#endif
-    &ipcp_protent,
-#ifdef INET6
-    &ipv6cp_protent,
-#endif
-    &ccp_protent,
-#ifdef IPX_CHANGE
-    &ipxcp_protent,
-#endif
-#ifdef AT_CHANGE
-    &atcp_protent,
-#endif
-    NULL
-};
-
-int
-pppdmain(
-    int argc,
-    char *argv[])
-{
-    int i, fdflags, t;
-    char *connector;
-    struct timeval timo;
-    struct protent *protp;
-
-    new_phase(PHASE_INITIALIZE);
-
-    script_env = NULL;
-    hostname[MAXNAMELEN-1] = 0;
-    privileged = 1;
-    privileged_option = 1;
-
-    /*
-     * Initialize magic number generator now so that protocols may
-     * use magic numbers in initialization.
-     */
-    magic_init();
-
-#ifdef XXX_XXX
-    /* moved code the the rtems_pppd_reset_options function */
-
-    /*
-     * Initialize to the standard option set, then parse, in order,
-     * the system options file, the user's options file,
-     * the tty's options file, and the command line arguments.
-     */
-    for (i = 0; (protp = protocols[i]) != NULL; ++i)
-        (*protp->init)(0);
-#endif
-
-
-    if (!ppp_available()) {
-	option_error(no_ppp_msg);
-	return(EXIT_NO_KERNEL_SUPPORT);
-    }
-
-    /*
-     * Check that the options given are valid and consistent.
-     */
-    if (!sys_check_options()) {
-	return(EXIT_OPTION_ERROR);
-    }
-    if (!auth_check_options()) {
-	return(EXIT_OPTION_ERROR);
-    }
-    for (i = 0; (protp = protocols[i]) != NULL; ++i)
-	if (protp->check_options != NULL)
-	    (*protp->check_options)();
-
-    /* default holdoff to 0 if no connect script has been given */
-    if (connect_script == 0 && !holdoff_specified)
-	holdoff = 0;
-
-    if (default_device)
-	nodetach = 1;
-
-    /*
-     * Initialize system-dependent stuff.
-     */
-    sys_init();
-    /* if (debug)
-	setlogmask(LOG_UPTO(LOG_DEBUG));
-    */
-
-    do_callback = 0;
-    for (;;) {
-
-	need_holdoff = 1;
-	pppd_ttyfd = -1;
-	real_ttyfd = -1;
-	pppd_status = EXIT_OK;
-	++unsuccess;
-	doing_callback = do_callback;
-	do_callback = 0;
-
-	new_phase(PHASE_SERIALCONN);
-
-	/*
-	 * Get a pty master/slave pair if the pty, notty, or record
-	 * options were specified.
-	 */
-	strlcpy(ppp_devnam, devnam, sizeof(ppp_devnam));
-	pty_master = -1;
-	pty_slave = -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;
-	pppd_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;
-		pppd_ttyfd = open(devnam, O_NONBLOCK | O_RDWR, 0);
-		err = errno;
-		if (pppd_ttyfd >= 0) {
-		    break;
-		}
-		errno = err;
-		if (err != EINTR) {
-		    error("Failed to open %s: %m", devnam);
-		    pppd_status = EXIT_OPEN_FAILED;
-		}
-		if (!persist || err != EINTR)
-		    goto fail;
-	    }
-	    if ((fdflags = fcntl(pppd_ttyfd, F_GETFL)) == -1
-		|| fcntl(pppd_ttyfd, F_SETFL, fdflags & ~O_NONBLOCK) < 0)
-		warn("Couldn't reset non-blocking mode on device: %m");
-
-	    /*
-	     * 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(pppd_ttyfd, ((connector != NULL && connector[0] != 0)
-			       || initializer != NULL));
-	    real_ttyfd = pppd_ttyfd;
-	}
-
-	/* 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(pppd_ttyfd, DIALER_INIT, initializer) < 0) {
-		    error("Initializer script failed");
-		    pppd_status = EXIT_INIT_FAILED;
-		    goto fail;
-		}
-		if (pppd_kill_link)
-		    goto disconnect;
-
-		info("Serial port initialized.");
-	    }
-
-	    if (connector && connector[0]) {
-		if (device_script(pppd_ttyfd, DIALER_CONNECT, connector) < 0) {
-		    error("Connect script failed");
-		    pppd_status = EXIT_CONNECT_FAILED;
-		    goto fail;
-		}
-		if (pppd_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);
-		    pppd_status = EXIT_OPEN_FAILED;
-		}
-		if (!persist || errno != EINTR || hungup || pppd_kill_link)
-		    goto fail;
-	    }
-	    close(i);
-	}
-
-        info("Serial connection established.");
-        sleep(1);
-
-	/* run welcome script, if any */
-	if (welcomer && welcomer[0]) {
-	    if (device_script(pppd_ttyfd, DIALER_WELCOME, welcomer) < 0)
-		warn("Welcome script failed");
-	}
-
-	/* set up the serial device as a ppp interface */
-	fd_ppp = establish_ppp(pppd_ttyfd);
-	if (fd_ppp < 0) {
-	    pppd_status = EXIT_FATAL_ERROR;
-	    goto disconnect;
-	}
-
-	if (!demand) {
-	    info("Using interface ppp%d", pppifunit);
-	    slprintf(ifname, sizeof(ifname), "ppp%d", pppifunit);
-	}
-
-	/*
-	 * Start opening the connection and wait for
-	 * incoming events (reply, timeout, etc.).
-	 */
-	notice("Connect: %s <--> %s", ifname, ppp_devnam);
-	gettimeofday(&start_time, NULL);
-
-	lcp_lowerup(0);
-	lcp_open(0);		/* Start protocol */
-
-	open_ccp_flag = 0;
-	pppd_status = EXIT_NEGOTIATION_FAILED;
-	new_phase(PHASE_ESTABLISH);
-	while (pppd_phase != PHASE_DEAD) {
-   	    wait_input(timeleft(&timo));
-	    calltimeout();
-            get_input();
-
-	    if (pppd_kill_link) {
-		lcp_close(0, "User request");
-		pppd_kill_link = 0;
-	    }
-	    if (open_ccp_flag) {
-		if (pppd_phase == PHASE_NETWORK || pppd_phase == PHASE_RUNNING) {
-		    ccp_fsm[0].flags = OPT_RESTART; /* clears OPT_SILENT */
-		    (*ccp_protent.open)(0);
-		}
-		open_ccp_flag = 0;
-	    }
-	}
-
-	/*
-	 * If we may want to bring the link up again, transfer
-	 * the ppp unit back to the loopback.  Set the
-	 * real serial device back to its normal mode of operation.
-	 */
-	clean_check();
-	if (demand)
-	    restore_loop();
-	disestablish_ppp(pppd_ttyfd);
-	fd_ppp = -1;
-	if (!hungup)
-	    lcp_lowerdown(0);
-
-	/*
-	 * Run disconnector script, if requested.
-	 * XXX we may not be able to do this if the line has hung up!
-	 */
-    disconnect:
-	if (disconnect_script && !hungup) {
-	    new_phase(PHASE_DISCONNECT);
-	    if (real_ttyfd >= 0)
-		set_up_tty(real_ttyfd, 1);
-	    if (device_script(pppd_ttyfd, DIALER_DISCONNECT, disconnect_script) < 0) {
-		warn("disconnect script failed");
-	    } else {
-		info("Serial link disconnected.");
-	    }
-	}
-
-    fail:
-	if (pty_master >= 0)
-	    close(pty_master);
-	if (pty_slave >= 0)
-	    close(pty_slave);
-	if (real_ttyfd >= 0)
-	    close_tty();
-
-	if (!persist || (maxfail > 0 && unsuccess >= maxfail))
-	    break;
-
-	pppd_kill_link = 0;
-	if (demand)
-	    demand_discard();
-	t = need_holdoff? holdoff: 0;
-	if (holdoff_hook)
-	    t = (*holdoff_hook)();
-	if (t > 0) {
-	    new_phase(PHASE_HOLDOFF);
-	    TIMEOUT(holdoff_end, NULL, t);
-	    do {
-   	        wait_input(timeleft(&timo));
-
-		calltimeout();
-		if (pppd_kill_link) {
-		    pppd_kill_link = 0;
-		    new_phase(PHASE_DORMANT); /* allow signal to end holdoff */
-		}
-	    } while (pppd_phase == PHASE_HOLDOFF);
-	    if (!persist)
-		break;
-	}
-    }
-
-    die(pppd_status);
-    return pppd_status;
-}
-
-/*
- * holdoff_end - called via a timeout when the holdoff period ends.
- */
-static void
-holdoff_end(
-    void *arg)
-{
-    new_phase(PHASE_DORMANT);
-}
-
-/* List of protocol names, to make our messages a little more informative. */
-struct protocol_list {
-    u_short	proto;
-    const char	*name;
-} protocol_list[] = {
-    { 0x21,	"IP" },
-    { 0x23,	"OSI Network Layer" },
-    { 0x25,	"Xerox NS IDP" },
-    { 0x27,	"DECnet Phase IV" },
-    { 0x29,	"Appletalk" },
-    { 0x2b,	"Novell IPX" },
-    { 0x2d,	"VJ compressed TCP/IP" },
-    { 0x2f,	"VJ uncompressed TCP/IP" },
-    { 0x31,	"Bridging PDU" },
-    { 0x33,	"Stream Protocol ST-II" },
-    { 0x35,	"Banyan Vines" },
-    { 0x39,	"AppleTalk EDDP" },
-    { 0x3b,	"AppleTalk SmartBuffered" },
-    { 0x3d,	"Multi-Link" },
-    { 0x3f,	"NETBIOS Framing" },
-    { 0x41,	"Cisco Systems" },
-    { 0x43,	"Ascom Timeplex" },
-    { 0x45,	"Fujitsu Link Backup and Load Balancing (LBLB)" },
-    { 0x47,	"DCA Remote Lan" },
-    { 0x49,	"Serial Data Transport Protocol (PPP-SDTP)" },
-    { 0x4b,	"SNA over 802.2" },
-    { 0x4d,	"SNA" },
-    { 0x4f,	"IP6 Header Compression" },
-    { 0x6f,	"Stampede Bridging" },
-    { 0xfb,	"single-link compression" },
-    { 0xfd,	"1st choice compression" },
-    { 0x0201,	"802.1d Hello Packets" },
-    { 0x0203,	"IBM Source Routing BPDU" },
-    { 0x0205,	"DEC LANBridge100 Spanning Tree" },
-    { 0x0231,	"Luxcom" },
-    { 0x0233,	"Sigma Network Systems" },
-    { 0x8021,	"Internet Protocol Control Protocol" },
-    { 0x8023,	"OSI Network Layer Control Protocol" },
-    { 0x8025,	"Xerox NS IDP Control Protocol" },
-    { 0x8027,	"DECnet Phase IV Control Protocol" },
-    { 0x8029,	"Appletalk Control Protocol" },
-    { 0x802b,	"Novell IPX Control Protocol" },
-    { 0x8031,	"Bridging NCP" },
-    { 0x8033,	"Stream Protocol Control Protocol" },
-    { 0x8035,	"Banyan Vines Control Protocol" },
-    { 0x803d,	"Multi-Link Control Protocol" },
-    { 0x803f,	"NETBIOS Framing Control Protocol" },
-    { 0x8041,	"Cisco Systems Control Protocol" },
-    { 0x8043,	"Ascom Timeplex" },
-    { 0x8045,	"Fujitsu LBLB Control Protocol" },
-    { 0x8047,	"DCA Remote Lan Network Control Protocol (RLNCP)" },
-    { 0x8049,	"Serial Data Control Protocol (PPP-SDCP)" },
-    { 0x804b,	"SNA over 802.2 Control Protocol" },
-    { 0x804d,	"SNA Control Protocol" },
-    { 0x804f,	"IP6 Header Compression Control Protocol" },
-    { 0x006f,	"Stampede Bridging Control Protocol" },
-    { 0x80fb,	"Single Link Compression Control Protocol" },
-    { 0x80fd,	"Compression Control Protocol" },
-    { 0xc021,	"Link Control Protocol" },
-    { 0xc023,	"Password Authentication Protocol" },
-    { 0xc025,	"Link Quality Report" },
-    { 0xc027,	"Shiva Password Authentication Protocol" },
-    { 0xc029,	"CallBack Control Protocol (CBCP)" },
-    { 0xc081,	"Container Control Protocol" },
-    { 0xc223,	"Challenge Handshake Authentication Protocol" },
-    { 0xc281,	"Proprietary Authentication Protocol" },
-    { 0,	NULL },
-};
-
-/*
- * protocol_name - find a name for a PPP protocol.
- */
-static const char *
-protocol_name(
-    int proto)
-{
-    struct protocol_list *lp;
-
-    for (lp = protocol_list; lp->proto != 0; ++lp)
-	if (proto == lp->proto)
-	    return lp->name;
-    return NULL;
-}
-
-/*
- * get_input - called when incoming data is available.
- */
-static void
-get_input(void)
-{
-    int len, i;
-    u_char *p;
-    u_short protocol;
-    struct protent *protp;
-
-    p = inpacket_buf;	/* point to beginning of packet buffer */
-
-    len = read_packet(inpacket_buf);
-    if (len < 0)
-	return;
-
-    if (len == 0) {
-	notice("Modem hangup");
-	hungup = 1;
-	pppd_status = EXIT_HANGUP;
-	lcp_lowerdown(0);	/* serial link is no longer available */
-	link_terminated(0);
-	return;
-    }
-
-    if (debug /*&& (debugflags & DBG_INPACKET)*/)
-	dbglog("rcvd %P", p, len);
-
-    if (len < PPP_HDRLEN) {
-	MAINDEBUG(("io(): Received short packet."));
-	return;
-    }
-
-    p += 2;				/* Skip address and control */
-    GETSHORT(protocol, p);
-    len -= PPP_HDRLEN;
-
-    /*
-     * Toss all non-LCP packets unless LCP is OPEN.
-     */
-    if (protocol != PPP_LCP && lcp_fsm[0].state != OPENED) {
-	MAINDEBUG(("get_input: Received non-LCP packet when LCP not open."));
-	return;
-    }
-
-    /*
-     * Until we get past the authentication phase, toss all packets
-     * except LCP, LQR and authentication packets.
-     */
-    if (pppd_phase <= PHASE_AUTHENTICATE
-	&& !(protocol == PPP_LCP || protocol == PPP_LQR
-	     || protocol == PPP_PAP || protocol == PPP_CHAP)) {
-	MAINDEBUG(("get_input: discarding proto 0x%x in phase %d",
-		   protocol, pppd_phase));
-	return;
-    }
-
-    /*
-     * Upcall the proper protocol input routine.
-     */
-    for (i = 0; (protp = protocols[i]) != NULL; ++i) {
-	if (protp->protocol == protocol && protp->enabled_flag) {
-	    (*protp->input)(0, p, len);
-	    return;
-	}
-        if (protocol == (protp->protocol & ~0x8000) && protp->enabled_flag
-	    && protp->datainput != NULL) {
-	    (*protp->datainput)(0, p, len);
-	    return;
-	}
-    }
-
-    if (debug) {
-	const char *pname = protocol_name(protocol);
-	if (pname != NULL)
-	    warn("Unsupported protocol '%s' (0x%x) received", pname, protocol);
-	else
-	    warn("Unsupported protocol 0x%x received", protocol);
-    }
-    lcp_sprotrej(0, p - PPP_HDRLEN, len + PPP_HDRLEN);
-
-    return;
-}
-
-/*
- * new_phase - signal the start of a new phase of pppd's operation.
- */
-void
-new_phase(
-    int p)
-{
-    pppd_phase = p;
-    if (new_phase_hook)
-	(*new_phase_hook)(p);
-}
-
-/*
- * die - clean up state and exit with the specified status.
- */
-void
-die(
-    int status)
-{
-    cleanup();
-}
-
-/*
- * cleanup - restore anything which needs to be restored before we exit
- */
-/* ARGSUSED */
-static void
-cleanup(void)
-{
-    sys_cleanup();
-
-    if (fd_ppp >= 0)
-	disestablish_ppp(pppd_ttyfd);
-    if (real_ttyfd >= 0)
-	close_tty();
-
-    sys_close();
-}
-
-/*
- * close_tty - restore the terminal device and close it.
- */
-static void
-close_tty(void)
-{
-    /* drop dtr to hang up */
-    if (!default_device && modem) {
-	setdtr(real_ttyfd, 0);
-	/*
-	 * This sleep is in case the serial port has CLOCAL set by default,
-	 * and consequently will reassert DTR when we close the device.
-	 */
-	sleep(1);
-    }
-
-    restore_tty(real_ttyfd);
-
-    close(real_ttyfd);
-    real_ttyfd = -1;
-}
-
-/*
- * update_link_stats - get stats at link termination.
- */
-void
-update_link_stats(
-    int u)
-{
-    struct timeval now;
-    char numbuf[32];
-
-    if (!get_ppp_stats(u, &link_stats)
-	|| gettimeofday(&now, NULL) < 0)
-	return;
-    link_connect_time = now.tv_sec - start_time.tv_sec;
-    link_stats_valid = 1;
-
-    slprintf(numbuf, sizeof(numbuf), "%d", link_connect_time);
-    slprintf(numbuf, sizeof(numbuf), "%d", link_stats.bytes_out);
-    slprintf(numbuf, sizeof(numbuf), "%d", link_stats.bytes_in);
-}
-
-struct	callout {
-    struct timeval	c_time;		/* time at which to call routine */
-    void		*c_arg;		/* argument to routine */
-    void		(*c_func)(void *); /* routine */
-    struct		callout *c_next;
-};
-
-static struct callout *callout = NULL;	/* Callout list */
-static struct timeval timenow;		/* Current time */
-
-/*
- * timeout - Schedule a timeout.
- *
- * Note that this timeout takes the number of seconds, NOT hz (as in
- * the kernel).
- */
-void
-ppptimeout(
-    void (*func)(void *),
-    void *arg,
-    int time)
-{
-    struct callout *newp, *p, **pp;
-
-    MAINDEBUG(("Timeout %p:%p in %d seconds.", func, arg, time));
-
-    /*
-     * Allocate timeout.
-     */
-    if ((newp = (struct callout *) malloc(sizeof(struct callout))) == NULL)
-	fatal("Out of memory in timeout()!");
-    newp->c_arg = arg;
-    newp->c_func = func;
-    gettimeofday(&timenow, NULL);
-    newp->c_time.tv_sec = timenow.tv_sec + time;
-    newp->c_time.tv_usec = timenow.tv_usec;
-
-    /*
-     * Find correct place and link it in.
-     */
-    for (pp = &callout; (p = *pp); pp = &p->c_next)
-	if (newp->c_time.tv_sec < p->c_time.tv_sec
-	    || (newp->c_time.tv_sec == p->c_time.tv_sec
-		&& newp->c_time.tv_usec < p->c_time.tv_usec))
-	    break;
-    newp->c_next = p;
-    *pp = newp;
-}
-
-
-/*
- * untimeout - Unschedule a timeout.
- */
-void
-pppuntimeout(
-    void (*func)(void *),
-    void *arg)
-{
-    struct callout **copp, *freep;
-
-    MAINDEBUG(("Untimeout %p:%p.", func, arg));
-
-    /*
-     * Find first matching timeout and remove it from the list.
-     */
-    for (copp = &callout; (freep = *copp); copp = &freep->c_next)
-	if (freep->c_func == func && freep->c_arg == arg) {
-	    *copp = freep->c_next;
-	    free((char *) freep);
-	    break;
-	}
-}
-
-
-/*
- * calltimeout - Call any timeout routines which are now due.
- */
-static void
-calltimeout(void)
-{
-    struct callout *p;
-
-    while (callout != NULL) {
-	p = callout;
-
-	if (gettimeofday(&timenow, NULL) < 0)
-	    fatal("Failed to get time of day: %m");
-	if (!(p->c_time.tv_sec < timenow.tv_sec
-	      || (p->c_time.tv_sec == timenow.tv_sec
-		  && p->c_time.tv_usec <= timenow.tv_usec)))
-	    break;		/* no, it's not time yet */
-
-	callout = p->c_next;
-	(*p->c_func)(p->c_arg);
-
-	free((char *) p);
-    }
-}
-
-
-/*
- * timeleft - return the length of time until the next timeout is due.
- */
-static struct timeval *
-timeleft(
-    struct timeval *tvp)
-{
-    if (callout == NULL)
-	return NULL;
-
-    gettimeofday(&timenow, NULL);
-    tvp->tv_sec = callout->c_time.tv_sec - timenow.tv_sec;
-    tvp->tv_usec = callout->c_time.tv_usec - timenow.tv_usec;
-    if (tvp->tv_usec < 0) {
-	tvp->tv_usec += 1000000;
-	tvp->tv_sec -= 1;
-    }
-    if (tvp->tv_sec < 0)
-	tvp->tv_sec = tvp->tv_usec = 0;
-
-    return tvp;
-}
-
-/*
- * device_script - run a program to talk to the serial device
- * (e.g. to run the connector or disconnector script).
- */
-static int device_script(int fd, int mode, char *program)
-{
-    int    iReturn = -1;
-    char   pScript[128];
-
-    /* copyt script into temporary location */
-    strcpy(pScript, program);
-
-    /* check to see if dialer was initialized */
-    if ( !pppd_dialer ) {
-      /* set default dialer to chatmain */
-      pppd_dialer = chatmain;
-    }
-
-    /* check to see if dialer is set */
-    if ( pppd_dialer ) {
-      /* call the dialer */
-      iReturn = (*pppd_dialer)(fd, mode, program);
-    }
-
-    return ( -iReturn );
-}
-
-/*
- * novm - log an error message saying we ran out of memory, and die.
- */
-void
-novm(
-    char *msg)
-{
-    fatal("Virtual memory exhausted allocating %s\n", msg);
-}