5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2002 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
21 * Created: Wed Mar 19 00:17:12 1997
23 * This is the main program for the SILC daemon. This parses command
24 * line arguments and creates the server object.
28 #include "serverincludes.h"
29 #include "server_internal.h"
30 #include "silcversion.h"
32 /* For now, we'll have this one server context global for this module. */
33 static SilcServer silcd;
35 static void silc_usage(void);
36 static char *silc_server_create_identifier(void);
38 silc_server_create_key_pair(char *pkcs_name, int bits, char *path,
40 SilcPublicKey *ret_pub_key,
41 SilcPrivateKey *ret_prv_key);
43 /* Long command line options */
44 static struct option long_opts[] =
46 { "config-file", 1, NULL, 'f' },
47 { "passphrase", 1, NULL, 'p' },
48 { "debug", 1, NULL, 'd' },
49 { "help", 0, NULL, 'h' },
50 { "foreground", 0, NULL, 'F' },
51 { "version", 0, NULL,'V' },
53 /* Key management options */
54 { "create-key-pair", 1, NULL, 'C' },
55 { "pkcs", 1, NULL, 10 },
56 { "bits", 1, NULL, 11 },
57 { "identifier", 1, NULL, 12 },
62 /* Command line option variables */
63 static bool opt_create_keypair = FALSE;
64 static char *opt_keypath = NULL;
65 static char *opt_pkcs = "rsa";
66 static char *opt_identifier = NULL;
67 static int opt_bits = 1024;
69 /* Prints out the usage of silc client */
71 static void silc_usage(void)
74 Usage: silcd [options]\n\
77 -f --config-file=FILE Alternate configuration file\n\
78 -d --debug=string Enable debugging (Implies --foreground)\n\
79 -h --help Display this message\n\
80 -F --foreground Dont fork\n\
81 -V --version Display version\n\
83 Key Management Options:\n\
84 -C, --create-key-pair=PATH Create new public key pair\n\
85 --pkcs=PKCS Set the PKCS of the public key pair\n\
86 --bits=VALUE Set length of the public key pair\n\
87 --identifier=IDENTIFIER Public key identifier\n\
89 The public key identifier may be of the following format:\n\
91 UN=<username>, HN=<hostname or IP>, RN=<real name>, E=<email>,\n\
92 O=<organization>, C=<country>\n\
94 The UN and HN must be provided, the others are optional. If the\n\
95 --identifier option is not used an identifier will be created for\n\
96 the public key automatically.\n\
98 Example identifier: \"UN=foobar, HN=foo.bar.com, RN=Foo T. Bar, \n\
99 E=foo@bar.com, C=FI\"\n\
104 /* Dies if a *valid* pid file exists already */
106 static void silc_server_checkpid(SilcServer silcd)
108 if (silcd->config->server_info->pid_file) {
113 SILC_LOG_DEBUG(("Checking for another silcd running"));
114 buf = silc_file_readfile(silcd->config->server_info->pid_file, &buf_len);
121 kill(oldpid, SIGCHLD); /* this signal does nothing, check if alive */
122 if (errno != ESRCH) {
123 fprintf(stderr, "\nI detected another daemon running with the "
125 fprintf(stderr, "Please change the config file, or erase the %s\n",
126 silcd->config->server_info->pid_file);
132 static void signal_handler(int sig)
134 /* Mark the signal to be caller after this signal is over. */
135 silc_schedule_signal_call(silcd->schedule, sig);
138 SILC_TASK_CALLBACK(got_hup)
140 /* First, reset all log files (they might have been deleted) */
141 silc_log_reset_all();
142 silc_log_flush_all();
145 SILC_TASK_CALLBACK(stop_server)
147 /* Stop scheduler, the program will stop eventually after noticing
148 that the scheduler is down. */
149 silc_schedule_stop(silcd->schedule);
152 int main(int argc, char **argv)
154 int ret, opt, option_index;
155 char *config_file = NULL;
156 bool foreground = FALSE;
159 /* Parse command line arguments */
161 while ((opt = getopt_long(argc, argv, "f:d:hFVC:",
162 long_opts, &option_index)) != EOF) {
169 printf("SILCd Secure Internet Live Conferencing daemon, "
170 "version %s (base: SILC Toolkit %s)\n",
171 silc_dist_version, silc_version);
172 printf("(c) 1997 - 2002 Pekka Riikonen "
173 "<priikone@silcnet.org>\n");
179 silc_debug_hexdump = TRUE;
180 silc_log_set_debug_string(optarg);
182 silc_log_quick = TRUE;
185 "Run-time debugging is not enabled. To enable it recompile\n"
186 "the server with --enable-debug configuration option.\n");
190 config_file = strdup(optarg);
197 * Key management options
200 opt_create_keypair = TRUE;
202 opt_keypath = strdup(optarg);
206 opt_pkcs = strdup(optarg);
210 opt_bits = atoi(optarg);
214 opt_identifier = strdup(optarg);
224 if (opt_create_keypair == TRUE) {
225 /* Create new key pair and exit */
226 silc_cipher_register_default();
227 silc_pkcs_register_default();
228 silc_hash_register_default();
229 silc_hmac_register_default();
230 silc_server_create_key_pair(opt_pkcs, opt_bits, opt_keypath,
231 opt_identifier, NULL, NULL);
235 /* Default configuration file */
237 config_file = strdup(SILC_SERVER_CONFIG_FILE);
239 /* Create SILC Server object */
240 ret = silc_server_alloc(&silcd);
244 /* Read configuration files */
245 silcd->config = silc_server_config_alloc(config_file);
246 if (silcd->config == NULL)
249 /* Check for another silcd running */
250 silc_server_checkpid(silcd);
252 /* Initialize the server */
253 ret = silc_server_init(silcd);
258 sa.sa_handler = SIG_IGN;
260 sigemptyset(&sa.sa_mask);
261 sigaction(SIGPIPE, &sa, NULL);
262 sa.sa_handler = signal_handler;
263 sigaction(SIGHUP, &sa, NULL);
264 sigaction(SIGTERM, &sa, NULL);
265 sigaction(SIGINT, &sa, NULL);
266 silc_schedule_signal_register(silcd->schedule, SIGHUP, got_hup, NULL);
267 silc_schedule_signal_register(silcd->schedule, SIGTERM, stop_server, NULL);
268 silc_schedule_signal_register(silcd->schedule, SIGINT, stop_server, NULL);
270 /* Before running the server, fork to background. */
272 silc_server_daemonise(silcd);
274 /* If set, write pid to file */
275 if (silcd->config->server_info->pid_file) {
276 char buf[10], *pidfile = silcd->config->server_info->pid_file;
278 snprintf(buf, sizeof(buf) - 1, "%d\n", getpid());
279 silc_file_writefile(pidfile, buf, strlen(buf));
283 silc_server_drop(silcd);
285 /* Run the server. When this returns the server has been stopped
287 silc_server_run(silcd);
289 /* Stop the server and free it. */
290 silc_server_stop(silcd);
291 silc_server_free(silcd);
293 /* Flush the logging system */
294 silc_log_flush_all();
301 /* Returns identifier string for public key generation. */
303 static char *silc_server_create_identifier(void)
305 char *username = NULL, *realname = NULL;
306 char hostname[256], email[256];
309 realname = silc_get_real_name();
312 memset(hostname, 0, sizeof(hostname));
313 gethostname(hostname, sizeof(hostname));
315 /* Get username (mandatory) */
316 username = silc_get_username();
320 /* Create default email address, whether it is right or not */
321 snprintf(email, sizeof(email), "%s@%s", username, hostname);
323 return silc_pkcs_encode_identifier(username, hostname, realname, email,
327 /* Creates new public key and private key pair. This is used only
328 when user wants to create new key pair from command line. */
331 silc_server_create_key_pair(char *pkcs_name, int bits, char *path,
333 SilcPublicKey *ret_pub_key,
334 SilcPrivateKey *ret_prv_key)
337 SilcPublicKey pub_key;
338 SilcPrivateKey prv_key;
342 char pkfile[256], prvfile[256];
344 if (!pkcs_name || !path)
347 if (!silc_pkcs_is_supported(pkcs_name)) {
348 fprintf(stderr, "Unsupported PKCS `%s'", pkcs_name);
356 identifier = silc_server_create_identifier();
358 rng = silc_rng_alloc();
360 silc_rng_global_init(rng);
362 snprintf(pkfile, sizeof(pkfile) - 1, "%s%s", path,
363 SILC_SERVER_PUBLIC_KEY_NAME);
364 snprintf(prvfile, sizeof(prvfile) - 1, "%s%s", path,
365 SILC_SERVER_PRIVATE_KEY_NAME);
368 silc_pkcs_alloc(pkcs_name, &pkcs);
369 silc_pkcs_generate_key(pkcs, bits, rng);
371 /* Save public key into file */
372 key = silc_pkcs_get_public_key(pkcs, &key_len);
373 pub_key = silc_pkcs_public_key_alloc(pkcs->pkcs->name, identifier,
375 silc_pkcs_save_public_key(pkfile, pub_key, SILC_PKCS_FILE_PEM);
377 *ret_pub_key = pub_key;
379 silc_pkcs_public_key_free(pub_key);
381 memset(key, 0, sizeof(key_len));
384 /* Save private key into file */
385 key = silc_pkcs_get_private_key(pkcs, &key_len);
386 prv_key = silc_pkcs_private_key_alloc(pkcs->pkcs->name, key, key_len);
387 silc_pkcs_save_private_key(prvfile, prv_key, NULL, SILC_PKCS_FILE_BIN);
389 *ret_prv_key = prv_key;
391 silc_pkcs_private_key_free(prv_key);
393 printf("Public key has been saved into `%s'\n", pkfile);
394 printf("Private key has been saved into `%s'\n", prvfile);
396 memset(key, 0, sizeof(key_len));
400 silc_pkcs_free(pkcs);