*/
#ifndef lint
-static char rcsid[] = "$Id: main.c,v 1.34 1996/07/01 01:17:39 paulus Exp $";
+static char rcsid[] = "$Id: main.c,v 1.39 1996/10/08 06:43:49 paulus Exp $";
#endif
#include <stdio.h>
#include "pathnames.h"
#include "patchlevel.h"
+#ifdef CBCP_SUPPORT
+#include "cbcp.h"
+#endif
+
#if defined(SUNOS4)
extern char *strerror();
#endif
#include "ipxcp.h"
#endif /* IPX_CHANGE */
-/*
- * If REQ_SYSOPTIONS is defined to 1, pppd will not run unless
- * /etc/ppp/options exists.
- */
-#ifndef REQ_SYSOPTIONS
-#define REQ_SYSOPTIONS 1
-#endif
-
/* interface vars */
char ifname[IFNAMSIZ]; /* Interface name */
int ifunit; /* Interface unit number */
static char default_devnam[MAXPATHLEN]; /* name of default device */
static pid_t pid; /* Our pid */
static uid_t uid; /* Our real user-id */
+static int conn_running; /* we have a [dis]connector running */
int ttyfd = -1; /* Serial port file descriptor */
mode_t tty_mode = -1; /* Original access permissions to tty */
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 phase; /* where the link is at */
int kill_link;
#define O_NONBLOCK O_NDELAY
#endif
-#ifdef PRIMITIVE_SYSLOG
+#ifdef ULTRIX
#define setlogmask(x)
#endif
&lcp_protent,
&pap_protent,
&chap_protent,
+#ifdef CBCP_SUPPORT
+ &cbcp_protent,
+#endif
&ipcp_protent,
&ccp_protent,
#ifdef IPX_CHANGE
strcpy(default_devnam, devnam);
/* Initialize syslog facilities */
-#ifdef PRIMITIVE_SYSLOG
+#ifdef ULTRIX
openlog("pppd", LOG_PID);
#else
openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
#endif
if (gethostname(hostname, MAXNAMELEN) < 0 ) {
- syslog(LOG_ERR, "couldn't get hostname: %m");
+ option_error("Couldn't get hostname: %m");
die(1);
}
hostname[MAXNAMELEN-1] = 0;
uid = getuid();
+ privileged = uid == 0;
/*
* Initialize to the standard option set, then parse, in order,
progname = *argv;
- if (!options_from_file(_PATH_SYSOPTIONS, REQ_SYSOPTIONS, 0)
+ if (!options_from_file(_PATH_SYSOPTIONS, !privileged, 0, 1)
|| !options_from_user())
exit(1);
scan_args(argc-1, argv+1); /* look for tty name on command line */
exit(1);
if (!ppp_available()) {
- fprintf(stderr, no_ppp_msg);
+ option_error(no_ppp_msg);
exit(1);
}
+ /*
+ * Check that we are running as root.
+ */
+ if (geteuid() != 0) {
+ option_error("must be root to run %s, since it is not setuid-root",
+ argv[0]);
+ die(1);
+ }
+
/*
* Check that the options given are valid and consistent.
*/
if (protp->check_options != NULL)
(*protp->check_options)();
if (demand && connector == 0) {
- fprintf(stderr, "%s: connect script required for demand-dialling\n",
- progname);
+ option_error("connect script required for demand-dialling\n");
exit(1);
}
for (;;) {
+ need_holdoff = 1;
+
if (demand) {
/*
* Don't do anything until we see some activity.
* real serial device back to its normal mode of operation.
*/
clean_check();
-#ifdef _linux_
- disestablish_ppp(ttyfd);
-#endif
if (demand)
restore_loop();
-#ifndef _linux_
disestablish_ppp(ttyfd);
-#endif
/*
* Run disconnector script, if requested.
if (demand)
demand_discard();
- if (holdoff > 0) {
+ if (holdoff > 0 && need_holdoff) {
phase = PHASE_HOLDOFF;
TIMEOUT(holdoff_end, NULL, holdoff);
do {
return tvp;
}
-
+
+
+/*
+ * kill_my_pg - send a signal to our process group, and ignore it ourselves.
+ */
+static void
+kill_my_pg(sig)
+ int sig;
+{
+ struct sigaction act, oldact;
+
+ act.sa_handler = SIG_IGN;
+ act.sa_flags = 0;
+ sigaction(sig, &act, &oldact);
+ kill(-getpgrp(), sig);
+ sigaction(sig, &oldact, NULL);
+}
+
/*
* hup - Catch SIGHUP signal.
{
syslog(LOG_INFO, "Hangup (SIGHUP)");
kill_link = 1;
+ if (conn_running)
+ /* Send the signal to the [dis]connector process(es) also */
+ kill_my_pg(sig);
}
syslog(LOG_INFO, "Terminating on signal %d.", sig);
persist = 0; /* don't try to restart */
kill_link = 1;
+ if (conn_running)
+ /* Send the signal to the [dis]connector process(es) also */
+ kill_my_pg(sig);
}
int sig;
{
syslog(LOG_ERR, "Fatal signal %d", sig);
+ if (conn_running)
+ kill_my_pg(SIGTERM);
die(1);
}
int status;
int errfd;
+ conn_running = 1;
pid = fork();
if (pid < 0) {
+ conn_running = 0;
syslog(LOG_ERR, "Failed to create child process: %m");
die(1);
}
syslog(LOG_ERR, "error waiting for (dis)connection process: %m");
die(1);
}
+ conn_running = 0;
return (status == 0 ? 0 : -1);
}
#define OUTCHAR(c) (buflen > 0? (--buflen, *buf++ = (c)): 0)
int
-vfmtmsg(char *buf, int buflen, char *fmt, va_list args)
+vfmtmsg(buf, buflen, fmt, args)
+ char *buf;
+ int buflen;
+ char *fmt;
+ va_list args;
{
int c, i, n;
int width, prec, fillch;
unsigned long val;
char *str, *f, *buf0;
unsigned char *p;
- va_list a;
+ void *a;
char num[32];
time_t t;
- static char hexchars[16] = "0123456789abcdef";
+ static char hexchars[] = "0123456789abcdef";
buf0 = buf;
--buflen;
break;
case 'r':
f = va_arg(args, char *);
- a = va_arg(args, va_list);
+ /*
+ * XXX We assume a va_list is either a pointer or an array, so
+ * what gets passed for a va_list is like a void * in some sense.
+ */
+ a = va_arg(args, void *);
n = vfmtmsg(buf, buflen + 1, f, a);
buf += n;
buflen -= n;