2 * citserver's main() function lives here.
14 #include <sys/types.h>
17 #include <sys/socket.h>
19 #if TIME_WITH_SYS_TIME
20 # include <sys/time.h>
24 # include <sys/time.h>
31 #include <netinet/in.h>
45 #include "dynloader.h"
46 #include "sysdep_decls.h"
47 #include "citserver.h"
51 #include "housekeeping.h"
54 #ifdef HAVE_SYS_SELECT_H
55 #include <sys/select.h>
63 * Here's where it all begins.
65 int main(int argc, char **argv)
67 char tracefile[128]; /* Name of file to log traces to */
68 int a, i; /* General-purpose variables */
70 int drop_root_perms = 1;
72 struct worker_node *wnp;
75 /* specify default port name and trace file */
76 strcpy(tracefile, "");
78 /* initialize the master context */
81 /* parse command-line arguments */
82 for (a=1; a<argc; ++a) {
84 /* -t specifies where to log trace messages to */
85 if (!strncmp(argv[a], "-t", 2)) {
86 strcpy(tracefile, argv[a]);
87 strcpy(tracefile, &tracefile[2]);
88 freopen(tracefile, "r", stdin);
89 freopen(tracefile, "w", stdout);
90 freopen(tracefile, "w", stderr);
91 chmod(tracefile, 0600);
94 /* run in the background if -d was specified */
95 else if (!strcmp(argv[a], "-d")) {
96 start_daemon( (strlen(tracefile) > 0) ? 0 : 1 ) ;
99 /* -x specifies the desired logging level */
100 else if (!strncmp(argv[a], "-x", 2)) {
101 verbosity = atoi(&argv[a][2]);
104 else if (!strncmp(argv[a], "-h", 2)) {
105 safestrncpy(bbs_home_directory, &argv[a][2],
106 sizeof bbs_home_directory);
110 else if (!strncmp(argv[a], "-f", 2)) {
114 /* -r tells the server not to drop root permissions. don't use
115 * this unless you know what you're doing. this should be
116 * removed in the next release if it proves unnecessary. */
117 else if (!strcmp(argv[a], "-r"))
120 /* any other parameter makes it crash and burn */
122 lprintf(1, "citserver: usage: "
123 "citserver [-tTraceFile] [-d] [-f]"
124 " [-xLogLevel] [-hHomeDir]\n");
130 /* Tell 'em who's in da house */
133 "Citadel/UX messaging server engine v%d.%02d\n"
134 "Copyright (C) 1987-2002 by the Citadel/UX development team.\n"
135 "Citadel/UX is released under the terms of the GNU General Public License.\n"
136 "If you paid for this software, someone is ripping you off.\n\n",
142 openlog("citserver", LOG_PID, LOG_USER);
144 /* Load site-specific parameters */
145 lprintf(7, "Loading citadel.config\n");
150 * Do non system dependent startup functions.
155 * Bind the server to a Unix-domain socket.
157 CtdlRegisterServiceHook(0,
159 citproto_begin_session,
163 * Bind the server to our favorite TCP port (usually 504).
165 CtdlRegisterServiceHook(config.c_port_number,
167 citproto_begin_session,
171 * Load any server-side modules (plugins) available here.
173 lprintf(7, "Initializing loadable modules\n");
174 size = strlen(bbs_home_directory) + 9;
175 if ((moddir = mallok(size)) != NULL) {
176 snprintf(moddir, size, "%s/modules", bbs_home_directory);
177 DLoader_Init(moddir);
182 * The rescan pipe exists so that worker threads can be woken up and
183 * told to re-scan the context list for fd's to listen on. This is
184 * necessary, for example, when a context is about to go idle and needs
185 * to get back on that list.
188 lprintf(1, "Can't create rescan pipe!\n");
195 * Now that we've bound the sockets, change to the BBS user id and its
196 * corresponding group ids
198 if (drop_root_perms) {
199 if ((pw = getpwuid(BBSUID)) == NULL)
200 lprintf(1, "WARNING: getpwuid(%ld): %s\n"
201 "Group IDs will be incorrect.\n", (long)BBSUID,
204 initgroups(pw->pw_name, pw->pw_gid);
205 if (setgid(pw->pw_gid))
206 lprintf(3, "setgid(%ld): %s\n", (long)pw->pw_gid,
209 lprintf(7, "Changing uid to %ld\n", (long)BBSUID);
210 if (setuid(BBSUID) != 0) {
211 lprintf(3, "setuid() failed: %s\n", strerror(errno));
215 /* We want to check for idle sessions once per minute */
216 CtdlRegisterSessionHook(terminate_idle_sessions, EVT_TIMER);
219 * Now create a bunch of worker threads.
221 lprintf(9, "Starting %d worker threads\n", config.c_min_workers-1);
222 begin_critical_section(S_WORKER_LIST);
223 for (i=0; i<(config.c_min_workers-1); ++i) {
226 end_critical_section(S_WORKER_LIST);
228 /* Now this thread can become a worker as well. */
229 initial_thread = pthread_self();
232 /* Server is exiting. Wait for workers to shutdown. */
233 lprintf(7, "Waiting for worker threads to shut down\n");
235 begin_critical_section(S_WORKER_LIST);
236 while (worker_list != NULL) {
238 worker_list = wnp->next;
240 /* avoid deadlock with an exiting thread */
241 end_critical_section(S_WORKER_LIST);
242 if ((i = pthread_join(wnp->tid, NULL)))
243 lprintf(1, "pthread_join: %s\n", strerror(i));
245 begin_critical_section(S_WORKER_LIST);
247 end_critical_section(S_WORKER_LIST);