2 tincd.c -- the main file for tincd
3 Copyright (C) 1998,1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>
4 2000 Guus Sliepen <guus@sliepen.warande.net>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: tincd.c,v 1.10.4.30 2000/11/16 22:12:23 zarq Exp $
30 #include <sys/types.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 # include <sys/ioctl.h>
41 #ifdef HAVE_OPENSSL_RAND_H
42 # include <openssl/rand.h>
47 #ifdef HAVE_OPENSSL_RSA_H
48 # include <openssl/rsa.h>
53 #ifdef HAVE_OPENSSL_ERR_H
54 # include <openssl/err.h>
72 /* The name this program was run with. */
75 /* If nonzero, display usage information and exit. */
78 /* If nonzero, print the version on standard output and exit. */
79 static int show_version;
81 /* If nonzero, it will attempt to kill a running tincd and exit. */
82 static int kill_tincd = 0;
84 /* If zero, don't detach from the terminal. */
87 /* If nonzero, generate public/private keypair for this host/net. */
88 static int generate_keys = 0;
90 char *identname; /* program name for syslog */
91 char *pidfilename; /* pid file location */
92 char **g_argv; /* a copy of the cmdline arguments */
93 char **environment; /* A pointer to the environment on
96 void cleanup_and_exit(int);
98 void make_names(void);
99 int write_pidfile(void);
101 static struct option const long_options[] =
103 { "config", required_argument, NULL, 'c' },
104 { "kill", no_argument, NULL, 'k' },
105 { "net", required_argument, NULL, 'n' },
106 { "help", no_argument, &show_help, 1 },
107 { "version", no_argument, &show_version, 1 },
108 { "no-detach", no_argument, &do_detach, 0 },
109 { "generate-keys", optional_argument, NULL, 'K'},
117 fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
120 printf(_("Usage: %s [option]...\n\n"), program_name);
121 printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
122 " -D, --no-detach Don't fork and detach.\n"
123 " -d Increase debug level.\n"
124 " -k, --kill Attempt to kill a running tincd and exit.\n"
125 " -n, --net=NETNAME Connect to net NETNAME.\n"));
126 printf(_(" -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n"
127 " --help Display this help and exit.\n"
128 " --version Output version information and exit.\n\n"));
129 printf(_("Report bugs to tinc@nl.linux.org.\n"));
135 parse_options(int argc, char **argv, char **envp)
138 int option_index = 0;
140 while((r = getopt_long(argc, argv, "c:Ddkn:K::", long_options, &option_index)) != EOF)
144 case 0: /* long option */
146 case 'c': /* config file */
147 confbase = xmalloc(strlen(optarg)+1);
148 strcpy(confbase, optarg);
150 case 'D': /* no detach */
153 case 'd': /* inc debug level */
156 case 'k': /* kill old tincds */
159 case 'n': /* net name given */
160 netname = xmalloc(strlen(optarg)+1);
161 strcpy(netname, optarg);
163 case 'K': /* generate public/private keypair */
166 generate_keys = atoi(optarg);
167 if(generate_keys < 512)
169 fprintf(stderr, _("Invalid argument! BITS must be a number equal to or greater than 512.\n"));
172 generate_keys &= ~7; /* Round it to bytes */
175 generate_keys = 1024;
185 /* This function prettyprints the key generation process */
187 void indicator(int a, int b, void *p)
192 fprintf(stderr, ".");
195 fprintf(stderr, "+");
198 fprintf(stderr, "-");
204 fprintf(stderr, " p\n");
207 fprintf(stderr, " q\n");
210 fprintf(stderr, "?");
214 fprintf(stderr, "?");
218 /* Generate a public/private RSA keypair, and possibly store it into the configuration file. */
224 fprintf(stderr, _("Generating %d bits keys:\n"), bits);
225 rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
228 fprintf(stderr, _("Error during key generation!"));
232 fprintf(stderr, _("Done.\n"));
234 fprintf(stderr, _("Please copy the private key to tinc.conf and the\npublic key to your host configuration file:\n\n"));
235 printf("PublicKey = %s\n", BN_bn2hex(rsa_key->n));
236 printf("PrivateKey = %s\n", BN_bn2hex(rsa_key->d));
243 Set all files and paths according to netname
245 void make_names(void)
250 asprintf(&pidfilename, "/var/run/tinc.%s.pid", netname);
252 asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
254 fprintf(stderr, _("Both netname and configuration directory given, using the latter...\n"));
256 asprintf(&identname, "tinc.%s", netname);
261 pidfilename = "/var/run/tinc.pid";
263 asprintf(&confbase, "%s/tinc", CONFDIR);
270 main(int argc, char **argv, char **envp)
272 program_name = argv[0];
274 setlocale (LC_ALL, "");
275 bindtextdomain (PACKAGE, LOCALEDIR);
276 textdomain (PACKAGE);
278 /* Do some intl stuff right now */
280 unknown = _("unknown");
283 parse_options(argc, argv, envp);
287 printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
288 printf(_("Copyright (C) 1998,1999,2000 Ivo Timmermans, Guus Sliepen and others.\n"
289 "See the AUTHORS file for a complete list.\n\n"
290 "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
291 "and you are welcome to redistribute it under certain conditions;\n"
292 "see the file COPYING for details.\n"));
302 fprintf(stderr, _("You must be root to run this program. Sorry.\n"));
310 /* Slllluuuuuuurrrrp! */
312 RAND_load_file("/dev/urandom", 1024);
315 exit(keygen(generate_keys));
320 if(read_server_config())
326 if(debug_lvl >= DEBUG_ERROR)
327 ERR_load_crypto_strings();
331 if(!setup_network_connections())
337 syslog(LOG_ERR, _("Unrecoverable error"));
342 syslog(LOG_NOTICE, _("Restarting in %d seconds!"), MAXTIMEOUT);
347 syslog(LOG_ERR, _("Not restarting."));