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/***********************************************************************
*
* main.c
*
* Main program of l2tp
*
* Copyright (C) 2002 by Roaring Penguin Software Inc.
*
* This software may be distributed under the terms of the GNU General
* Public License, Version 2, or (at your option) any later version.
*
* LIC: GPL
*
***********************************************************************/
static char const RCSID[] =
"$Id: main.c,v 1.1.48.1 2005/08/08 12:05:25 honor Exp $";
#include "l2tp.h"
#include <stdio.h>
#include <string.h>
#include <getopt.h>
#include <signal.h>
#include <fcntl.h>
#include <stdlib.h>
static void
usage(int argc, char *argv[], int exitcode)
{
fprintf(stderr, "\nl2tpd Version %s Copyright 2002 Roaring Penguin Software Inc.\n", VERSION);
fprintf(stderr, "http://www.roaringpenguin.com/\n\n");
fprintf(stderr, "Usage: %s [options]\n", argv[0]);
fprintf(stderr, "Options:\n");
fprintf(stderr, "-d level -- Set debugging to 'level'\n");
fprintf(stderr, "-f -- Do not fork\n");
fprintf(stderr, "-h -- Print usage\n");
fprintf(stderr, "\nThis program is licensed under the terms of\nthe GNU General Public License, Version 2.\n");
exit(exitcode);
}
int
main(int argc, char *argv[])
{
EventSelector *es = Event_CreateSelector();
int i;
int opt;
int do_fork = 1;
int debugmask = 0;
while((opt = getopt(argc, argv, "d:fh")) != -1) {
switch(opt) {
case 'h':
usage(argc, argv, EXIT_SUCCESS);
break;
case 'f':
do_fork = 0;
break;
case 'd':
sscanf(optarg, "%d", &debugmask);
break;
default:
usage(argc, argv, EXIT_FAILURE);
}
}
l2tp_random_init();
l2tp_tunnel_init(es);
l2tp_peer_init();
l2tp_debug_set_bitmask(debugmask);
if (l2tp_parse_config_file(es, "/tmp/l2tp.conf") < 0) { //2005-04-14 by kanki
l2tp_die();
}
if (!l2tp_network_init(es)) {
l2tp_die();
}
/* Daemonize */
if (do_fork) {
i = fork();
if (i < 0) {
perror("fork");
exit(EXIT_FAILURE);
} else if (i != 0) {
/* Parent */
exit(EXIT_SUCCESS);
}
setsid();
signal(SIGHUP, SIG_IGN);
i = fork();
if (i < 0) {
perror("fork");
exit(EXIT_FAILURE);
} else if (i != 0) {
exit(EXIT_SUCCESS);
}
chdir("/");
/* Point stdin/stdout/stderr to /dev/null */
for (i=0; i<3; i++) {
close(i);
}
i = open("/dev/console", O_RDWR); //2005-04-14 by kanki for debugging
if (i >= 0) {
dup2(i, 0);
dup2(i, 1);
dup2(i, 2);
if (i > 2) close(i);
}
}
while(1) {
i = Event_HandleEvent(es);
if (i < 0) {
fprintf(stderr, "Event_HandleEvent returned %d\n", i);
l2tp_cleanup();
exit(EXIT_FAILURE);
}
}
return 0;
}
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