2000-03-26 00:33:07 +00:00
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/*
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tincd.c -- the main file for tincd
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2000-05-31 18:23:06 +00:00
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Copyright (C) 1998,1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>
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2000 Guus Sliepen <guus@sliepen.warande.net>
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2000-03-26 00:33:07 +00:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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2000-11-24 23:13:07 +00:00
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$Id: tincd.c,v 1.10.4.35 2000/11/24 23:13:07 guus Exp $
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2000-05-31 18:23:06 +00:00
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*/
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2000-04-06 18:28:29 +00:00
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2000-03-26 00:33:07 +00:00
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#include "config.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <syslog.h>
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#include <unistd.h>
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2000-09-06 11:49:05 +00:00
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#include <signal.h>
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2000-10-29 00:02:20 +00:00
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#include <string.h>
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2000-11-08 00:10:50 +00:00
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#include <termios.h>
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2000-03-26 00:33:07 +00:00
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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2000-11-15 01:06:13 +00:00
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#ifdef HAVE_OPENSSL_RAND_H
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# include <openssl/rand.h>
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#else
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# include <rand.h>
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#endif
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#ifdef HAVE_OPENSSL_RSA_H
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# include <openssl/rsa.h>
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#else
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# include <rsa.h>
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#endif
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#ifdef HAVE_OPENSSL_ERR_H
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# include <openssl/err.h>
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#else
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# include <err.h>
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#endif
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2000-03-26 00:33:07 +00:00
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#include <utils.h>
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#include <xalloc.h>
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#include "conf.h"
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#include "net.h"
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#include "netutl.h"
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2000-11-20 18:06:17 +00:00
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#include "process.h"
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2000-08-08 14:54:57 +00:00
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#include "protocol.h"
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2000-10-28 21:05:20 +00:00
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#include "subnet.h"
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2000-03-26 00:33:07 +00:00
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2000-05-29 21:01:26 +00:00
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#include "system.h"
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2000-03-26 00:33:07 +00:00
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/* The name this program was run with. */
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char *program_name;
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/* If nonzero, display usage information and exit. */
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static int show_help;
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/* If nonzero, print the version on standard output and exit. */
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static int show_version;
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/* If nonzero, it will attempt to kill a running tincd and exit. */
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static int kill_tincd = 0;
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2000-04-06 18:28:29 +00:00
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/* If zero, don't detach from the terminal. */
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2000-11-16 17:54:29 +00:00
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extern int do_detach;
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2000-04-06 18:28:29 +00:00
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2000-10-20 16:49:20 +00:00
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/* If nonzero, generate public/private keypair for this host/net. */
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static int generate_keys = 0;
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2000-03-26 00:33:07 +00:00
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char *identname; /* program name for syslog */
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char *pidfilename; /* pid file location */
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char **g_argv; /* a copy of the cmdline arguments */
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2000-11-03 22:31:55 +00:00
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char **environment; /* A pointer to the environment on
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startup */
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2000-03-26 00:33:07 +00:00
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static struct option const long_options[] =
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{
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2000-11-08 00:20:06 +00:00
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{ "config", required_argument, NULL, 'c' },
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2000-03-26 00:33:07 +00:00
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{ "kill", no_argument, NULL, 'k' },
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{ "net", required_argument, NULL, 'n' },
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{ "help", no_argument, &show_help, 1 },
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{ "version", no_argument, &show_version, 1 },
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2000-04-06 18:28:29 +00:00
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{ "no-detach", no_argument, &do_detach, 0 },
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2000-10-30 10:19:06 +00:00
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{ "generate-keys", optional_argument, NULL, 'K'},
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2000-03-26 00:33:07 +00:00
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{ NULL, 0, NULL, 0 }
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};
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static void
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usage(int status)
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{
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if(status != 0)
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2000-05-29 21:01:26 +00:00
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fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
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2000-03-26 00:33:07 +00:00
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else
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{
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2000-05-29 21:01:26 +00:00
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printf(_("Usage: %s [option]...\n\n"), program_name);
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2000-10-30 00:22:54 +00:00
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printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
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" -D, --no-detach Don't fork and detach.\n"
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" -d Increase debug level.\n"
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" -k, --kill Attempt to kill a running tincd and exit.\n"
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" -n, --net=NETNAME Connect to net NETNAME.\n"));
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printf(_(" -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n"
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" --help Display this help and exit.\n"
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" --version Output version information and exit.\n\n"));
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2000-05-29 21:01:26 +00:00
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printf(_("Report bugs to tinc@nl.linux.org.\n"));
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2000-03-26 00:33:07 +00:00
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}
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exit(status);
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}
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void
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parse_options(int argc, char **argv, char **envp)
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{
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int r;
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int option_index = 0;
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2000-10-29 00:02:20 +00:00
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2000-10-20 16:49:20 +00:00
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while((r = getopt_long(argc, argv, "c:Ddkn:K::", long_options, &option_index)) != EOF)
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2000-03-26 00:33:07 +00:00
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{
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switch(r)
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{
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case 0: /* long option */
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break;
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case 'c': /* config file */
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2000-10-14 17:04:16 +00:00
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confbase = xmalloc(strlen(optarg)+1);
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strcpy(confbase, optarg);
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2000-03-26 00:33:07 +00:00
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break;
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2000-04-06 18:28:29 +00:00
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case 'D': /* no detach */
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do_detach = 0;
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break;
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2000-03-26 00:33:07 +00:00
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case 'd': /* inc debug level */
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debug_lvl++;
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break;
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case 'k': /* kill old tincds */
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kill_tincd = 1;
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break;
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case 'n': /* net name given */
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netname = xmalloc(strlen(optarg)+1);
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strcpy(netname, optarg);
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break;
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2000-10-20 16:49:20 +00:00
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case 'K': /* generate public/private keypair */
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if(optarg)
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{
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generate_keys = atoi(optarg);
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if(generate_keys < 512)
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{
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fprintf(stderr, _("Invalid argument! BITS must be a number equal to or greater than 512.\n"));
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usage(1);
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}
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generate_keys &= ~7; /* Round it to bytes */
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}
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else
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generate_keys = 1024;
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2000-03-26 00:33:07 +00:00
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break;
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case '?':
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usage(1);
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default:
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break;
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}
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}
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}
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2000-10-20 16:49:20 +00:00
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/* This function prettyprints the key generation process */
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void indicator(int a, int b, void *p)
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{
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switch(a)
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{
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case 0:
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fprintf(stderr, ".");
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break;
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case 1:
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fprintf(stderr, "+");
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break;
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case 2:
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fprintf(stderr, "-");
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break;
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case 3:
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switch(b)
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{
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case 0:
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fprintf(stderr, " p\n");
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break;
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case 1:
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fprintf(stderr, " q\n");
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break;
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default:
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fprintf(stderr, "?");
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}
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break;
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default:
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fprintf(stderr, "?");
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}
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}
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/* Generate a public/private RSA keypair, and possibly store it into the configuration file. */
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int keygen(int bits)
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{
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RSA *rsa_key;
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fprintf(stderr, _("Generating %d bits keys:\n"), bits);
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rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
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if(!rsa_key)
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{
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fprintf(stderr, _("Error during key generation!"));
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return -1;
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}
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else
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fprintf(stderr, _("Done.\n"));
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fprintf(stderr, _("Please copy the private key to tinc.conf and the\npublic key to your host configuration file:\n\n"));
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printf("PublicKey = %s\n", BN_bn2hex(rsa_key->n));
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printf("PrivateKey = %s\n", BN_bn2hex(rsa_key->d));
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fflush(stdin);
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return 0;
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}
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2000-03-26 00:33:07 +00:00
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/*
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Set all files and paths according to netname
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*/
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void make_names(void)
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{
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if(netname)
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{
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2000-10-14 17:04:16 +00:00
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if(!pidfilename)
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2000-11-22 16:19:07 +00:00
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asprintf(&pidfilename, LOCALSTATEDIR "/run/tinc.%s.pid", netname);
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2000-10-14 17:04:16 +00:00
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if(!confbase)
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asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
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2000-11-08 00:20:06 +00:00
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else
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2000-11-08 20:52:37 +00:00
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fprintf(stderr, _("Both netname and configuration directory given, using the latter...\n"));
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2000-10-14 17:04:16 +00:00
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if(!identname)
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asprintf(&identname, "tinc.%s", netname);
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2000-03-26 00:33:07 +00:00
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}
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else
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{
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2000-10-14 17:04:16 +00:00
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if(!pidfilename)
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2000-11-22 16:19:07 +00:00
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pidfilename = LOCALSTATEDIR "/run/tinc.pid";
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2000-10-14 17:04:16 +00:00
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if(!confbase)
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asprintf(&confbase, "%s/tinc", CONFDIR);
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if(!identname)
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identname = "tinc";
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2000-03-26 00:33:07 +00:00
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}
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}
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int
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main(int argc, char **argv, char **envp)
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{
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program_name = argv[0];
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2000-05-29 21:01:26 +00:00
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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2000-10-15 00:59:37 +00:00
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/* Do some intl stuff right now */
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unknown = _("unknown");
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2000-11-03 22:31:55 +00:00
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environment = envp;
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2000-03-26 00:33:07 +00:00
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parse_options(argc, argv, envp);
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if(show_version)
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{
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2000-08-08 14:54:57 +00:00
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printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
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2000-10-15 00:59:37 +00:00
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printf(_("Copyright (C) 1998,1999,2000 Ivo Timmermans, Guus Sliepen and others.\n"
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"See the AUTHORS file for a complete list.\n\n"
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2000-05-29 21:01:26 +00:00
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"tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
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"and you are welcome to redistribute it under certain conditions;\n"
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2000-10-15 00:59:37 +00:00
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"see the file COPYING for details.\n"));
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2000-03-26 00:33:07 +00:00
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return 0;
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}
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if(show_help)
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usage(0);
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if(geteuid())
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{
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2000-06-28 11:38:01 +00:00
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fprintf(stderr, _("You must be root to run this program. Sorry.\n"));
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2000-03-26 00:33:07 +00:00
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return 1;
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}
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g_argv = argv;
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make_names();
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2000-10-29 22:55:15 +00:00
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/* Slllluuuuuuurrrrp! */
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RAND_load_file("/dev/urandom", 1024);
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2000-10-20 16:49:20 +00:00
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if(generate_keys)
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exit(keygen(generate_keys));
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2000-03-26 00:33:07 +00:00
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if(kill_tincd)
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exit(kill_other());
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2000-10-14 17:04:16 +00:00
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if(read_server_config())
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2000-03-26 00:33:07 +00:00
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return 1;
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if(detach())
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2000-03-28 19:16:27 +00:00
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exit(0);
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2000-03-26 00:33:07 +00:00
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2000-10-29 22:10:44 +00:00
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if(debug_lvl >= DEBUG_ERROR)
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ERR_load_crypto_strings();
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2000-06-30 11:45:16 +00:00
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for(;;)
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{
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2000-10-15 00:59:37 +00:00
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if(!setup_network_connections())
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{
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main_loop();
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cleanup_and_exit(1);
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2000-10-29 09:19:27 +00:00
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}
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2000-10-15 00:59:37 +00:00
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syslog(LOG_ERR, _("Unrecoverable error"));
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cp_trace();
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if(do_detach)
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{
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|
syslog(LOG_NOTICE, _("Restarting in %d seconds!"), MAXTIMEOUT);
|
|
|
|
sleep(MAXTIMEOUT);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2000-10-29 02:07:41 +00:00
|
|
|
syslog(LOG_ERR, _("Not restarting."));
|
2000-10-15 00:59:37 +00:00
|
|
|
exit(0);
|
|
|
|
}
|
2000-06-30 11:45:16 +00:00
|
|
|
}
|
2000-03-26 00:33:07 +00:00
|
|
|
}
|
|
|
|
|