--- /dev/null
+/*
+ * citserver's main() function lives here.
+ *
+ * $Id$
+ */
+
+#include "sysdep.h"
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
+#endif
+
+#include <limits.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <sys/un.h>
+#include <string.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <syslog.h>
+#include <grp.h>
+#ifdef __GNUC__
+#include <malloc.h>
+#endif
+#ifdef HAVE_PTHREAD_H
+#include <pthread.h>
+#endif
+#include "citadel.h"
+#include "server.h"
+#include "dynloader.h"
+#include "sysdep_decls.h"
+#include "citserver.h"
+#include "support.h"
+#include "config.h"
+#include "database.h"
+#include "housekeeping.h"
+#include "tools.h"
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#ifndef HAVE_SNPRINTF
+#include "snprintf.h"
+#endif
+
+/*
+ * Here's where it all begins.
+ */
+int main(int argc, char **argv)
+{
+ char tracefile[128]; /* Name of file to log traces to */
+ int a, i; /* General-purpose variables */
+ struct passwd *pw;
+ int drop_root_perms = 1;
+ char *moddir;
+ struct worker_node *wnp;
+
+ /* specify default port name and trace file */
+ strcpy(tracefile, "");
+
+ /* initialize the master context */
+ InitializeMasterCC();
+
+ /* parse command-line arguments */
+ for (a=1; a<argc; ++a) {
+
+ /* -t specifies where to log trace messages to */
+ if (!strncmp(argv[a], "-t", 2)) {
+ strcpy(tracefile, argv[a]);
+ strcpy(tracefile, &tracefile[2]);
+ freopen(tracefile, "r", stdin);
+ freopen(tracefile, "w", stdout);
+ freopen(tracefile, "w", stderr);
+ }
+
+ /* run in the background if -d was specified */
+ else if (!strcmp(argv[a], "-d")) {
+ start_daemon( (strlen(tracefile) > 0) ? 0 : 1 ) ;
+ }
+
+ /* -x specifies the desired logging level */
+ else if (!strncmp(argv[a], "-x", 2)) {
+ verbosity = atoi(&argv[a][2]);
+ }
+
+ else if (!strncmp(argv[a], "-h", 2)) {
+ safestrncpy(bbs_home_directory, &argv[a][2],
+ sizeof bbs_home_directory);
+ home_specified = 1;
+ }
+
+ else if (!strncmp(argv[a], "-f", 2)) {
+ do_defrag = 1;
+ }
+
+ /* -r tells the server not to drop root permissions. don't use
+ * this unless you know what you're doing. this should be
+ * removed in the next release if it proves unnecessary. */
+ else if (!strcmp(argv[a], "-r"))
+ drop_root_perms = 0;
+
+ /* any other parameter makes it crash and burn */
+ else {
+ lprintf(1, "citserver: usage: "
+ "citserver [-tTraceFile] [-d] [-f]"
+ " [-xLogLevel] [-hHomeDir]\n");
+ exit(1);
+ }
+
+ }
+
+ /* Tell 'em who's in da house */
+ lprintf(1,
+"\nMultithreaded message server for Citadel/UX\n"
+"Copyright (C) 1987-2001 by the Citadel/UX development team.\n"
+"Citadel/UX is free software, covered by the GNU General Public License, and\n"
+"you are welcome to change it and/or distribute copies of it under certain\n"
+"conditions. There is absolutely no warranty for this software. Please\n"
+"read the 'COPYING.txt' file for details.\n\n");
+
+ /* Initialize... */
+ init_sysdep();
+ openlog("citserver", LOG_PID, LOG_USER);
+
+ /* Load site-specific parameters */
+ lprintf(7, "Loading citadel.config\n");
+ get_config();
+
+
+ /*
+ * Do non system dependent startup functions.
+ */
+ master_startup();
+
+ /*
+ * Bind the server to a Unix-domain socket.
+ */
+ CtdlRegisterServiceHook(0,
+ "citadel.socket",
+ citproto_begin_session,
+ do_command_loop);
+
+ /*
+ * Bind the server to our favorite TCP port (usually 504).
+ */
+ CtdlRegisterServiceHook(config.c_port_number,
+ NULL,
+ citproto_begin_session,
+ do_command_loop);
+
+ /*
+ * Load any server-side modules (plugins) available here.
+ */
+ lprintf(7, "Initializing loadable modules\n");
+ if ((moddir = malloc(strlen(bbs_home_directory) + 9)) != NULL) {
+ sprintf(moddir, "%s/modules", bbs_home_directory);
+ DLoader_Init(moddir);
+ free(moddir);
+ }
+
+ /*
+ * The rescan pipe exists so that worker threads can be woken up and
+ * told to re-scan the context list for fd's to listen on. This is
+ * necessary, for example, when a context is about to go idle and needs
+ * to get back on that list.
+ */
+ if (pipe(rescan)) {
+ lprintf(1, "Can't create rescan pipe!\n");
+ exit(errno);
+ }
+
+ init_master_fdset();
+
+ /*
+ * Now that we've bound the sockets, change to the BBS user id and its
+ * corresponding group ids
+ */
+ if (drop_root_perms) {
+ if ((pw = getpwuid(BBSUID)) == NULL)
+ lprintf(1, "WARNING: getpwuid(%d): %s\n"
+ "Group IDs will be incorrect.\n", BBSUID,
+ strerror(errno));
+ else {
+ initgroups(pw->pw_name, pw->pw_gid);
+ if (setgid(pw->pw_gid))
+ lprintf(3, "setgid(%d): %s\n", pw->pw_gid,
+ strerror(errno));
+ }
+ lprintf(7, "Changing uid to %d\n", BBSUID);
+ if (setuid(BBSUID) != 0) {
+ lprintf(3, "setuid() failed: %s\n", strerror(errno));
+ }
+ }
+
+ /* We want to check for idle sessions once per minute */
+ CtdlRegisterSessionHook(terminate_idle_sessions, EVT_TIMER);
+
+ /*
+ * Now create a bunch of worker threads.
+ */
+ lprintf(9, "Starting %d worker threads\n", config.c_min_workers-1);
+ begin_critical_section(S_WORKER_LIST);
+ for (i=0; i<(config.c_min_workers-1); ++i) {
+ create_worker();
+ }
+ end_critical_section(S_WORKER_LIST);
+
+ /* Now this thread can become a worker as well. */
+ initial_thread = pthread_self();
+ worker_thread(NULL);
+
+ /* Server is exiting. Wait for workers to shutdown. */
+ lprintf(7, "Waiting for worker threads to shut down\n");
+
+ begin_critical_section(S_WORKER_LIST);
+ while (worker_list != NULL) {
+ wnp = worker_list;
+ worker_list = wnp->next;
+
+ /* avoid deadlock with an exiting thread */
+ end_critical_section(S_WORKER_LIST);
+ if ((i = pthread_join(wnp->tid, NULL)))
+ lprintf(1, "pthread_join: %s\n", strerror(i));
+ phree(wnp);
+ begin_critical_section(S_WORKER_LIST);
+ }
+ end_critical_section(S_WORKER_LIST);
+
+ master_cleanup();
+
+ return(0);
+}
projects / citadel.git / commitdiff