5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2001 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"
32 static void silc_usage();
33 static char *silc_server_create_identifier();
35 silc_server_create_key_pair(char *pkcs_name, int bits, char *path,
37 SilcPublicKey *ret_pub_key,
38 SilcPrivateKey *ret_prv_key);
40 /* Long command line options */
41 static struct option long_opts[] =
43 { "config-file", 1, NULL, 'f' },
44 { "debug", 1, NULL, 'd' },
45 { "help", 0, NULL, 'h' },
46 { "foreground", 0, NULL, 'F' },
47 { "version", 0, NULL,'V' },
49 /* Key management options */
50 { "create-key-pair", 1, NULL, 'C' },
51 { "pkcs", 1, NULL, 10 },
52 { "bits", 1, NULL, 11 },
53 { "identifier", 1, NULL, 12 },
58 /* Command line option variables */
59 static bool opt_create_keypair = FALSE;
60 static char *opt_keypath = NULL;
61 static char *opt_pkcs = "rsa";
62 static char *opt_identifier = NULL;
63 static int opt_bits = 1024;
65 /* Prints out the usage of silc client */
67 static void silc_usage()
70 Usage: silcd [options]\n\
73 -f --config-file=FILE Alternate configuration file\n\
74 -d --debug=string Enable debugging (Implies --foreground)\n\
75 -h --help Display this message\n\
76 -F --foreground Dont fork\n\
77 -V --version Display version\n\
79 Key Management Options:\n\
80 -C, --create-key-pair=PATH Create new public key pair\n\
81 --pkcs=PKCS Set the PKCS of the public key pair\n\
82 --bits=VALUE Set length of the public key pair\n\
83 --identifier=IDENTIFIER Public key identifier\n\
85 The public key identifier may be of the following format:\n\
87 UN=<username>, HN=<hostname or IP>, RN=<real name>, E=<email>,\n\
88 O=<organization>, C=<country>\n\
90 The UN and HN must be provided, the others are optional. If the\n\
91 --identifier option is not used an identifier will be created for\n\
92 the public key automatically.\n\
94 Example identifier: \"UN=foobar, HN=foo.bar.com, RN=Foo T. Bar, \n\
95 E=foo@bar.com, C=FI\"\n\
100 /* Dies if a *valid* pid file exists already */
102 static void silc_checkpid(SilcServer silcd)
104 if (silcd->config->pidfile && silcd->config->pidfile->pid_file) {
109 SILC_LOG_DEBUG(("Checking for another silcd running"));
110 buf = silc_file_readfile(silcd->config->pidfile->pid_file, &buf_len);
117 kill(oldpid, SIGCHLD); /* this signal does nothing, check if alive */
118 if (errno != ESRCH) {
119 fprintf(stderr, "\nI detected another daemon running with the same pid file.\n");
120 fprintf(stderr, "Please change the config file, or erase the %s\n",
121 silcd->config->pidfile->pid_file);
127 int main(int argc, char **argv)
129 int ret, opt, option_index;
130 char *config_file = NULL;
131 bool foreground = FALSE;
135 /* Parse command line arguments */
137 while ((opt = getopt_long(argc, argv, "cf:d:hFVC:",
138 long_opts, &option_index)) != EOF) {
145 printf("SILCd Secure Internet Live Conferencing daemon, "
146 "version %s (base: SILC Toolkit %s)\n",
147 silc_dist_version, silc_version);
148 printf("(c) 1997 - 2001 Pekka Riikonen "
149 "<priikone@silcnet.org>\n");
155 silc_debug_hexdump = TRUE;
156 silc_log_set_debug_string(optarg);
158 silc_log_quick = TRUE;
161 "Run-time debugging is not enabled. To enable it recompile\n"
162 "the server with --enable-debug configuration option.\n");
166 config_file = strdup(optarg);
173 * Key management options
176 opt_create_keypair = TRUE;
178 opt_keypath = strdup(optarg);
182 opt_pkcs = strdup(optarg);
186 opt_bits = atoi(optarg);
190 opt_identifier = strdup(optarg);
200 if (opt_create_keypair == TRUE) {
201 /* Create new key pair and exit */
202 silc_cipher_register_default();
203 silc_pkcs_register_default();
204 silc_hash_register_default();
205 silc_hmac_register_default();
206 silc_server_create_key_pair(opt_pkcs, opt_bits, opt_keypath,
207 opt_identifier, NULL, NULL);
211 /* Default configuration file */
213 config_file = strdup(SILC_SERVER_CONFIG_FILE);
215 /* Create SILC Server object */
216 ret = silc_server_alloc(&silcd);
220 /* Read configuration files */
221 silcd->config = silc_server_config_alloc(config_file);
222 if (silcd->config == NULL)
225 /* Check for another silcd running */
226 silc_checkpid(silcd);
228 /* Initialize the server */
229 ret = silc_server_init(silcd);
234 sa.sa_handler = SIG_IGN;
236 sigemptyset(&sa.sa_mask);
237 sigaction(SIGPIPE, &sa, NULL);
239 /* Before running the server, fork to background. */
241 silc_server_daemonise(silcd);
243 /* If set, write pid to file */
244 if (silcd->config->pidfile && silcd->config->pidfile->pid_file) {
246 unlink(silcd->config->pidfile->pid_file);
247 snprintf(buf, sizeof(buf) - 1, "%d\n", getpid());
248 silc_file_writefile(silcd->config->pidfile->pid_file, buf, strlen(buf));
252 silc_server_drop(silcd);
254 /* Run the server. When this returns the server has been stopped
256 silc_server_run(silcd);
258 /* Stop the server. This probably has been done already but it
259 doesn't hurt to do it here again. */
260 silc_server_stop(silcd);
261 silc_server_free(silcd);
268 /* Returns identifier string for public key generation. */
270 static char *silc_server_create_identifier()
272 char *username = NULL, *realname = NULL;
273 char hostname[256], email[256];
276 realname = silc_get_real_name();
279 memset(hostname, 0, sizeof(hostname));
280 gethostname(hostname, sizeof(hostname));
282 /* Get username (mandatory) */
283 username = silc_get_username();
287 /* Create default email address, whether it is right or not */
288 snprintf(email, sizeof(email), "%s@%s", username, hostname);
290 return silc_pkcs_encode_identifier(username, hostname, realname, email,
294 /* Creates new public key and private key pair. This is used only
295 when user wants to create new key pair from command line. */
298 silc_server_create_key_pair(char *pkcs_name, int bits, char *path,
300 SilcPublicKey *ret_pub_key,
301 SilcPrivateKey *ret_prv_key)
304 SilcPublicKey pub_key;
305 SilcPrivateKey prv_key;
309 char pkfile[256], prvfile[256];
311 if (!pkcs_name || !path)
314 if (!silc_pkcs_is_supported(pkcs_name)) {
315 fprintf(stderr, "Unsupported PKCS `%s'", pkcs_name);
323 identifier = silc_server_create_identifier();
325 rng = silc_rng_alloc();
327 silc_rng_global_init(rng);
329 snprintf(pkfile, sizeof(pkfile) - 1, "%s%s", path,
330 SILC_SERVER_PUBLIC_KEY_NAME);
331 snprintf(prvfile, sizeof(prvfile) - 1, "%s%s", path,
332 SILC_SERVER_PRIVATE_KEY_NAME);
335 silc_pkcs_alloc(pkcs_name, &pkcs);
336 pkcs->pkcs->init(pkcs->context, bits, rng);
338 /* Save public key into file */
339 key = silc_pkcs_get_public_key(pkcs, &key_len);
340 pub_key = silc_pkcs_public_key_alloc(pkcs->pkcs->name, identifier,
342 silc_pkcs_save_public_key(pkfile, pub_key, SILC_PKCS_FILE_PEM);
344 *ret_pub_key = pub_key;
346 silc_pkcs_public_key_free(pub_key);
348 memset(key, 0, sizeof(key_len));
351 /* Save private key into file */
352 key = silc_pkcs_get_private_key(pkcs, &key_len);
353 prv_key = silc_pkcs_private_key_alloc(pkcs->pkcs->name, key, key_len);
354 silc_pkcs_save_private_key(prvfile, prv_key, NULL, SILC_PKCS_FILE_BIN);
356 *ret_prv_key = prv_key;
358 silc_pkcs_private_key_free(prv_key);
360 printf("Public key has been saved into `%s'\n", pkfile);
361 printf("Private key has been saved into `%s'\n", prvfile);
363 memset(key, 0, sizeof(key_len));
367 silc_pkcs_free(pkcs);