/*
silcd.c
-
- Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
- Copyright (C) 1997 - 2000 Pekka Riikonen
+ Author: Pekka Riikonen <priikone@silcnet.org>
+
+ Copyright (C) 1997 - 2002 Pekka Riikonen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
-/*
+/*
* Created: Wed Mar 19 00:17:12 1997
*
* This is the main program for the SILC daemon. This parses command
* line arguments and creates the server object.
*/
-/*
- * $Id$
- * $Log$
- * Revision 1.1.1.1 2000/06/27 11:36:56 priikone
- * Importet from internal CVS/Added Log headers.
- *
- *
- */
+/* $Id$ */
#include "serverincludes.h"
#include "server_internal.h"
#include "version.h"
+/* For now, we'll have this one server context global for this module. */
+static SilcServer silcd;
+
+static void silc_usage();
+static char *silc_server_create_identifier();
+static int
+silc_server_create_key_pair(char *pkcs_name, int bits, char *path,
+ char *identifier,
+ SilcPublicKey *ret_pub_key,
+ SilcPrivateKey *ret_prv_key);
+
/* Long command line options */
-static struct option long_opts[] =
+static struct option long_opts[] =
{
{ "config-file", 1, NULL, 'f' },
- { "generate-config-file", 0, NULL, 'c' },
+ { "debug", 1, NULL, 'd' },
{ "help", 0, NULL, 'h' },
+ { "foreground", 0, NULL, 'F' },
{ "version", 0, NULL,'V' },
+
+ /* Key management options */
+ { "create-key-pair", 1, NULL, 'C' },
+ { "pkcs", 1, NULL, 10 },
+ { "bits", 1, NULL, 11 },
+ { "identifier", 1, NULL, 12 },
+
{ NULL, 0, NULL, 0 }
};
+/* Command line option variables */
+static bool opt_create_keypair = FALSE;
+static char *opt_keypath = NULL;
+static char *opt_pkcs = "rsa";
+static char *opt_identifier = NULL;
+static int opt_bits = 1024;
+
/* Prints out the usage of silc client */
-void silc_usage()
+static void silc_usage()
{
- printf("Usage: silcd [options]\n");
- printf("Options:\n");
- printf(" -f --config-file=FILE Alternate configuration file\n");
- printf(" -c --generate-config-file Generate example configuration "
- "file\n");
- printf(" -h --help Display this message\n");
- printf(" -V --version Display version\n");
+ printf("\
+Usage: silcd [options]\n\
+\n\
+ Generic Options:\n\
+ -f --config-file=FILE Alternate configuration file\n\
+ -d --debug=string Enable debugging (Implies --foreground)\n\
+ -h --help Display this message\n\
+ -F --foreground Dont fork\n\
+ -V --version Display version\n\
+\n\
+ Key Management Options:\n\
+ -C, --create-key-pair=PATH Create new public key pair\n\
+ --pkcs=PKCS Set the PKCS of the public key pair\n\
+ --bits=VALUE Set length of the public key pair\n\
+ --identifier=IDENTIFIER Public key identifier\n\
+\n\
+ The public key identifier may be of the following format:\n\
+\n\
+ UN=<username>, HN=<hostname or IP>, RN=<real name>, E=<email>,\n\
+ O=<organization>, C=<country>\n\
+\n\
+ The UN and HN must be provided, the others are optional. If the\n\
+ --identifier option is not used an identifier will be created for\n\
+ the public key automatically.\n\
+\n\
+ Example identifier: \"UN=foobar, HN=foo.bar.com, RN=Foo T. Bar, \n\
+ E=foo@bar.com, C=FI\"\n\
+\n");
exit(0);
}
+/* Dies if a *valid* pid file exists already */
+
+static void silc_server_checkpid(SilcServer silcd)
+{
+ if (silcd->config->server_info->pid_file) {
+ int oldpid;
+ char *buf;
+ uint32 buf_len;
+
+ SILC_LOG_DEBUG(("Checking for another silcd running"));
+ buf = silc_file_readfile(silcd->config->server_info->pid_file, &buf_len);
+ if (!buf)
+ return;
+ oldpid = atoi(buf);
+ silc_free(buf);
+ if (oldpid <= 0)
+ return;
+ kill(oldpid, SIGCHLD); /* this signal does nothing, check if alive */
+ if (errno != ESRCH) {
+ fprintf(stderr, "\nI detected another daemon running with the same pid file.\n");
+ fprintf(stderr, "Please change the config file, or erase the %s\n",
+ silcd->config->server_info->pid_file);
+ exit(1);
+ }
+ }
+}
+
+static void got_hup(int z)
+{
+ /* First, reset all log files (they might have been deleted) */
+ silc_log_reset_all();
+ silc_log_flush_all();
+}
+
+static void stop_server(int z)
+{
+ /* Stop scheduler, the program will stop eventually after noticing
+ that the scheduler is down. */
+ silc_schedule_stop(silcd->schedule);
+}
+
int main(int argc, char **argv)
{
- int ret;
- int opt, option_index;
+ int ret, opt, option_index;
char *config_file = NULL;
- SilcServer silcd;
+ bool foreground = FALSE;
+ struct sigaction sa;
/* Parse command line arguments */
if (argc > 1) {
- while ((opt = getopt_long(argc, argv, "cf:hV",
+ while ((opt = getopt_long(argc, argv, "cf:d:hFVC:",
long_opts, &option_index)) != EOF) {
- switch(opt)
+ switch(opt)
{
case 'h':
silc_usage();
break;
case 'V':
printf("SILCd Secure Internet Live Conferencing daemon, "
- "version %s\n", silc_version);
- printf("(c) 1997 - 2000 Pekka Riikonen "
- "<priikone@poseidon.pspt.fi>\n");
+ "version %s (base: SILC Toolkit %s)\n",
+ silc_dist_version, silc_version);
+ printf("(c) 1997 - 2001 Pekka Riikonen "
+ "<priikone@silcnet.org>\n");
exit(0);
break;
- case 'c':
- /* Print out example configuration file */
- silc_config_server_print();
- exit(0);
+ case 'd':
+#ifdef SILC_DEBUG
+ silc_debug = TRUE;
+ silc_debug_hexdump = TRUE;
+ silc_log_set_debug_string(optarg);
+ foreground = TRUE;
+ silc_log_quick = TRUE;
+#else
+ fprintf(stdout,
+ "Run-time debugging is not enabled. To enable it recompile\n"
+ "the server with --enable-debug configuration option.\n");
+#endif
break;
case 'f':
config_file = strdup(optarg);
break;
+ case 'F':
+ foreground = TRUE;
+ break;
+
+ /*
+ * Key management options
+ */
+ case 'C':
+ opt_create_keypair = TRUE;
+ if (optarg)
+ opt_keypath = strdup(optarg);
+ break;
+ case 10:
+ if (optarg)
+ opt_pkcs = strdup(optarg);
+ break;
+ case 11:
+ if (optarg)
+ opt_bits = atoi(optarg);
+ break;
+ case 12:
+ if (optarg)
+ opt_identifier = strdup(optarg);
+ break;
+
default:
silc_usage();
break;
}
}
+ if (opt_create_keypair == TRUE) {
+ /* Create new key pair and exit */
+ silc_cipher_register_default();
+ silc_pkcs_register_default();
+ silc_hash_register_default();
+ silc_hmac_register_default();
+ silc_server_create_key_pair(opt_pkcs, opt_bits, opt_keypath,
+ opt_identifier, NULL, NULL);
+ exit(0);
+ }
+
/* Default configuration file */
if (!config_file)
config_file = strdup(SILC_SERVER_CONFIG_FILE);
goto fail;
/* Read configuration files */
- silcd->config = silc_config_server_alloc(config_file);
+ silcd->config = silc_server_config_alloc(config_file);
if (silcd->config == NULL)
goto fail;
+ /* Check for another silcd running */
+ silc_server_checkpid(silcd);
+
/* Initialize the server */
ret = silc_server_init(silcd);
if (ret == FALSE)
goto fail;
-
+
+ /* Ignore SIGPIPE */
+ sa.sa_handler = SIG_IGN;
+ sa.sa_flags = 0;
+ sigemptyset(&sa.sa_mask);
+ sigaction(SIGPIPE, &sa, NULL);
+ sa.sa_handler = got_hup;
+ sigaction(SIGHUP, &sa, NULL);
+ sa.sa_handler = stop_server;
+ sigaction(SIGTERM, &sa, NULL);
+ sa.sa_handler = stop_server;
+ sigaction(SIGINT, &sa, NULL);
+
+ /* Before running the server, fork to background. */
+ if (!foreground)
+ silc_server_daemonise(silcd);
+
+ /* If set, write pid to file */
+ if (silcd->config->server_info->pid_file) {
+ char buf[10], *pidfile = silcd->config->server_info->pid_file;
+ unlink(pidfile);
+ snprintf(buf, sizeof(buf) - 1, "%d\n", getpid());
+ silc_file_writefile(pidfile, buf, strlen(buf));
+ }
+
+ /* Drop root. */
+ silc_server_drop(silcd);
+
/* Run the server. When this returns the server has been stopped
and we will exit. */
silc_server_run(silcd);
- /* Stop the server. This probably has been done already but it
- doesn't hurt to do it here again. */
+ /* Stop the server and free it. */
silc_server_stop(silcd);
silc_server_free(silcd);
-
+
+ /* Flush the logging system */
+ silc_log_flush_all();
+
exit(0);
fail:
exit(1);
}
+
+/* Returns identifier string for public key generation. */
+
+static char *silc_server_create_identifier()
+{
+ char *username = NULL, *realname = NULL;
+ char hostname[256], email[256];
+
+ /* Get realname */
+ realname = silc_get_real_name();
+
+ /* Get hostname */
+ memset(hostname, 0, sizeof(hostname));
+ gethostname(hostname, sizeof(hostname));
+
+ /* Get username (mandatory) */
+ username = silc_get_username();
+ if (!username)
+ return NULL;
+
+ /* Create default email address, whether it is right or not */
+ snprintf(email, sizeof(email), "%s@%s", username, hostname);
+
+ return silc_pkcs_encode_identifier(username, hostname, realname, email,
+ NULL, NULL);
+}
+
+/* Creates new public key and private key pair. This is used only
+ when user wants to create new key pair from command line. */
+
+static int
+silc_server_create_key_pair(char *pkcs_name, int bits, char *path,
+ char *identifier,
+ SilcPublicKey *ret_pub_key,
+ SilcPrivateKey *ret_prv_key)
+{
+ SilcPKCS pkcs;
+ SilcPublicKey pub_key;
+ SilcPrivateKey prv_key;
+ SilcRng rng;
+ unsigned char *key;
+ uint32 key_len;
+ char pkfile[256], prvfile[256];
+
+ if (!pkcs_name || !path)
+ return FALSE;
+
+ if (!silc_pkcs_is_supported(pkcs_name)) {
+ fprintf(stderr, "Unsupported PKCS `%s'", pkcs_name);
+ return FALSE;
+ }
+
+ if (!bits)
+ bits = 1024;
+
+ if (!identifier)
+ identifier = silc_server_create_identifier();
+
+ rng = silc_rng_alloc();
+ silc_rng_init(rng);
+ silc_rng_global_init(rng);
+
+ snprintf(pkfile, sizeof(pkfile) - 1, "%s%s", path,
+ SILC_SERVER_PUBLIC_KEY_NAME);
+ snprintf(prvfile, sizeof(prvfile) - 1, "%s%s", path,
+ SILC_SERVER_PRIVATE_KEY_NAME);
+
+ /* Generate keys */
+ silc_pkcs_alloc(pkcs_name, &pkcs);
+ pkcs->pkcs->init(pkcs->context, bits, rng);
+
+ /* Save public key into file */
+ key = silc_pkcs_get_public_key(pkcs, &key_len);
+ pub_key = silc_pkcs_public_key_alloc(pkcs->pkcs->name, identifier,
+ key, key_len);
+ silc_pkcs_save_public_key(pkfile, pub_key, SILC_PKCS_FILE_PEM);
+ if (ret_pub_key)
+ *ret_pub_key = pub_key;
+ else
+ silc_pkcs_public_key_free(pub_key);
+
+ memset(key, 0, sizeof(key_len));
+ silc_free(key);
+
+ /* Save private key into file */
+ key = silc_pkcs_get_private_key(pkcs, &key_len);
+ prv_key = silc_pkcs_private_key_alloc(pkcs->pkcs->name, key, key_len);
+ silc_pkcs_save_private_key(prvfile, prv_key, NULL, SILC_PKCS_FILE_BIN);
+ if (ret_prv_key)
+ *ret_prv_key = prv_key;
+ else
+ silc_pkcs_private_key_free(prv_key);
+
+ printf("Public key has been saved into `%s'\n", pkfile);
+ printf("Private key has been saved into `%s'\n", prvfile);
+
+ memset(key, 0, sizeof(key_len));
+ silc_free(key);
+
+ silc_rng_free(rng);
+ silc_pkcs_free(pkcs);
+
+ return TRUE;
+}
projects / silc.git / blobdiff