/*
silcd.c
-
+
Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2001 Pekka Riikonen
+ 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
#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
+static int
silc_server_create_key_pair(char *pkcs_name, int bits, char *path,
- char *identifier,
+ 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' },
{ "debug", 1, NULL, 'd' },
{ "help", 0, NULL, 'h' },
+ { "foreground", 0, NULL, 'F' },
{ "version", 0, NULL,'V' },
/* Key management options */
\n\
Generic Options:\n\
-f --config-file=FILE Alternate configuration file\n\
- -d --debug=string Enable debugging (no daemon)\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\
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;
- char pid[10];
-
- silc_debug = FALSE;
/* Parse command line arguments */
if (argc > 1) {
- while ((opt = getopt_long(argc, argv, "cf:d:hVC:",
+ while ((opt = getopt_long(argc, argv, "cf:d:hFVC:",
long_opts, &option_index)) != EOF) {
- switch(opt)
+ switch(opt)
{
case 'h':
silc_usage();
exit(0);
break;
case 'd':
+#ifdef SILC_DEBUG
silc_debug = TRUE;
silc_debug_hexdump = TRUE;
silc_log_set_debug_string(optarg);
-#ifndef SILC_DEBUG
- fprintf(stdout,
+ 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
case 'f':
config_file = strdup(optarg);
break;
+ case 'F':
+ foreground = TRUE;
+ break;
/*
* Key management options
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)
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sigaction(SIGPIPE, &sa, NULL);
-
- if (silc_debug == FALSE)
- /* Before running the server, fork to background and set
- both user and group no non-root */
+ 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);
- /* Set /var/run/silcd.pid */
- unlink(SILC_SERVER_PID_FILE);
- memset(pid, 0, sizeof(pid));
- snprintf(pid, sizeof(pid) - 1, "%d\n", getpid());
- silc_file_writefile(SILC_SERVER_PID_FILE, pid, strlen(pid));
-
+ /* 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);
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