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 1.10.4.34 2000/11/22 19:14:09 guus 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>
73 /* The name this program was run with. */
76 /* If nonzero, display usage information and exit. */
79 /* If nonzero, print the version on standard output and exit. */
80 static int show_version;
82 /* If nonzero, it will attempt to kill a running tincd and exit. */
83 static int kill_tincd = 0;
85 /* If zero, don't detach from the terminal. */
88 /* If nonzero, generate public/private keypair for this host/net. */
89 static int generate_keys = 0;
91 char *identname; /* program name for syslog */
92 char *pidfilename; /* pid file location */
93 char **g_argv; /* a copy of the cmdline arguments */
94 char **environment; /* A pointer to the environment on
97 static struct option const long_options[] =
99 { "config", required_argument, NULL, 'c' },
100 { "kill", no_argument, NULL, 'k' },
101 { "net", required_argument, NULL, 'n' },
102 { "help", no_argument, &show_help, 1 },
103 { "version", no_argument, &show_version, 1 },
104 { "no-detach", no_argument, &do_detach, 0 },
105 { "generate-keys", optional_argument, NULL, 'K'},
113 fprintf(stderr, _("Try `%s --help\' for more information.\n"), program_name);
116 printf(_("Usage: %s [option]...\n\n"), program_name);
117 printf(_(" -c, --config=DIR Read configuration options from DIR.\n"
118 " -D, --no-detach Don't fork and detach.\n"
119 " -d Increase debug level.\n"
120 " -k, --kill Attempt to kill a running tincd and exit.\n"
121 " -n, --net=NETNAME Connect to net NETNAME.\n"));
122 printf(_(" -K, --generate-keys[=BITS] Generate public/private RSA keypair.\n"
123 " --help Display this help and exit.\n"
124 " --version Output version information and exit.\n\n"));
125 printf(_("Report bugs to tinc@nl.linux.org.\n"));
131 parse_options(int argc, char **argv, char **envp)
134 int option_index = 0;
136 while((r = getopt_long(argc, argv, "c:Ddkn:K::", long_options, &option_index)) != EOF)
140 case 0: /* long option */
142 case 'c': /* config file */
143 confbase = xmalloc(strlen(optarg)+1);
144 strcpy(confbase, optarg);
146 case 'D': /* no detach */
149 case 'd': /* inc debug level */
152 case 'k': /* kill old tincds */
155 case 'n': /* net name given */
156 netname = xmalloc(strlen(optarg)+1);
157 strcpy(netname, optarg);
159 case 'K': /* generate public/private keypair */
162 generate_keys = atoi(optarg);
163 if(generate_keys < 512)
165 fprintf(stderr, _("Invalid argument! BITS must be a number equal to or greater than 512.\n"));
168 generate_keys &= ~7; /* Round it to bytes */
171 generate_keys = 1024;
181 /* This function prettyprints the key generation process */
183 void indicator(int a, int b, void *p)
188 fprintf(stderr, ".");
191 fprintf(stderr, "+");
194 fprintf(stderr, "-");
200 fprintf(stderr, " p\n");
203 fprintf(stderr, " q\n");
206 fprintf(stderr, "?");
210 fprintf(stderr, "?");
214 /* Generate a public/private RSA keypair, and possibly store it into the configuration file. */
220 fprintf(stderr, _("Generating %d bits keys:\n"), bits);
221 rsa_key = RSA_generate_key(bits, 0xFFFF, indicator, NULL);
224 fprintf(stderr, _("Error during key generation!"));
228 fprintf(stderr, _("Done.\n"));
230 fprintf(stderr, _("Please copy the private key to tinc.conf and the\npublic key to your host configuration file:\n\n"));
231 printf("PublicKey = %s\n", BN_bn2hex(rsa_key->n));
232 printf("PrivateKey = %s\n", BN_bn2hex(rsa_key->d));
239 Set all files and paths according to netname
241 void make_names(void)
246 asprintf(&pidfilename, LOCALSTATEDIR "/run/tinc.%s.pid", netname);
248 asprintf(&confbase, "%s/tinc/%s", CONFDIR, netname);
250 fprintf(stderr, _("Both netname and configuration directory given, using the latter...\n"));
252 asprintf(&identname, "tinc.%s", netname);
257 pidfilename = LOCALSTATEDIR "/run/tinc.pid";
259 asprintf(&confbase, "%s/tinc", CONFDIR);
266 main(int argc, char **argv, char **envp)
268 program_name = argv[0];
270 setlocale (LC_ALL, "");
271 bindtextdomain (PACKAGE, LOCALEDIR);
272 textdomain (PACKAGE);
274 /* Do some intl stuff right now */
276 unknown = _("unknown");
279 parse_options(argc, argv, envp);
283 printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE, VERSION, __DATE__, __TIME__, PROT_CURRENT);
284 printf(_("Copyright (C) 1998,1999,2000 Ivo Timmermans, Guus Sliepen and others.\n"
285 "See the AUTHORS file for a complete list.\n\n"
286 "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
287 "and you are welcome to redistribute it under certain conditions;\n"
288 "see the file COPYING for details.\n"));
298 fprintf(stderr, _("You must be root to run this program. Sorry.\n"));
306 /* Slllluuuuuuurrrrp! */
308 RAND_load_file("/dev/urandom", 1024);
311 exit(keygen(generate_keys));
316 if(read_server_config())
324 if(debug_lvl >= DEBUG_ERROR)
325 ERR_load_crypto_strings();
329 if(!setup_network_connections())
335 syslog(LOG_ERR, _("Unrecoverable error"));
340 syslog(LOG_NOTICE, _("Restarting in %d seconds!"), MAXTIMEOUT);
345 syslog(LOG_ERR, _("Not restarting."));