2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2009 Richard Kettlewell
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 /** @file server/disorderd.c
19 * @brief Main DisOrder server
21 #include "disorder-server.h"
25 static const struct option options[] = {
26 { "help", no_argument, 0, 'h' },
27 { "version", no_argument, 0, 'V' },
28 { "config", required_argument, 0, 'c' },
29 { "debug", no_argument, 0, 'd' },
30 { "foreground", no_argument, 0, 'f' },
31 { "log", required_argument, 0, 'l' },
32 { "pidfile", required_argument, 0, 'P' },
33 { "wide-open", no_argument, 0, 'w' },
34 { "syslog", no_argument, 0, 's' },
38 /* display usage message and terminate */
39 static void help(void) {
41 " disorderd [OPTIONS]\n"
43 " --help, -h Display usage message\n"
44 " --version, -V Display version number\n"
45 " --config PATH, -c PATH Set configuration file\n"
46 " --debug, -d Turn on debugging\n"
47 " --foreground, -f Do not become a daemon\n"
48 " --syslog, -s Log to syslog even with -f\n"
49 " --pidfile PATH, -P PATH Leave a pidfile\n");
54 /* signals ------------------------------------------------------------------ */
57 static int handle_sighup(ev_source attribute((unused)) *ev_,
58 int attribute((unused)) sig,
59 void attribute((unused)) *u) {
60 info("received SIGHUP");
67 static int handle_sigint(ev_source attribute((unused)) *ev_,
68 int attribute((unused)) sig,
69 void attribute((unused)) *u) {
70 info("received SIGINT");
74 static int handle_sigterm(ev_source attribute((unused)) *ev_,
75 int attribute((unused)) sig,
76 void attribute((unused)) *u) {
77 info("received SIGTERM");
81 /* periodic actions --------------------------------------------------------- */
83 struct periodic_data {
84 void (*callback)(ev_source *);
88 static int periodic_callback(ev_source *ev_,
89 const struct timeval attribute((unused)) *now,
92 struct periodic_data *const pd = u;
96 w.tv_sec += pd->period;
97 ev_timeout(ev, 0, &w, periodic_callback, pd);
101 /** @brief Create a periodic action
102 * @param ev_ Event loop
103 * @param callback Callback function
104 * @param period Interval between calls in seconds
105 * @param immediate If true, call @p callback straight away
107 static void create_periodic(ev_source *ev_,
108 void (*callback)(ev_source *),
112 struct periodic_data *const pd = xmalloc(sizeof *pd);
114 pd->callback = callback;
120 ev_timeout(ev_, 0, &w, periodic_callback, pd);
123 static void periodic_rescan(ev_source *ev_) {
124 trackdb_rescan(ev_, 1/*check*/, 0, 0);
127 static void periodic_database_gc(ev_source attribute((unused)) *ev_) {
131 static void periodic_volume_check(ev_source attribute((unused)) *ev_) {
135 if(api && api->get_volume) {
136 api->get_volume(&l, &r);
137 if(l != volume_left || r != volume_right) {
140 snprintf(lb, sizeof lb, "%d", l);
141 snprintf(rb, sizeof rb, "%d", r);
142 eventlog("volume", lb, rb, (char *)0);
147 static void periodic_play_check(ev_source *ev_) {
151 static void periodic_add_random(ev_source *ev_) {
152 add_random_track(ev_);
155 /* We fix the path to include the bindir and sbindir we were installed into */
156 static void fix_path(void) {
157 char *path = getenv("PATH");
158 static char *newpath;
159 /* static or libgc collects it! */
162 error(0, "PATH is not set at all!");
164 if(*finkbindir && strcmp(finkbindir, "/"))
165 /* We appear to be a finkized mac; include fink on the path in case the
166 * tools we need are there. */
167 byte_xasprintf(&newpath, "PATH=%s:%s:%s:%s",
168 path, bindir, sbindir, finkbindir);
170 byte_xasprintf(&newpath, "PATH=%s:%s:%s", path, bindir, sbindir);
175 int main(int argc, char **argv) {
176 int n, background = 1, logsyslog = 0;
177 const char *pidfile = 0;
182 if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale");
183 /* garbage-collect PCRE's memory */
184 pcre_malloc = xmalloc;
186 while((n = getopt_long(argc, argv, "hVc:dfP:Ns", options, 0)) >= 0) {
189 case 'V': version("disorderd");
190 case 'c': configfile = optarg; break;
191 case 'd': debugging = 1; break;
192 case 'f': background = 0; break;
193 case 'P': pidfile = optarg; break;
194 case 's': logsyslog = 1; break;
195 case 'w': wideopen = 1; break;
196 default: fatal(0, "invalid option");
199 /* go into background if necessary */
201 daemonize(progname, LOG_DAEMON, pidfile);
203 /* If we're running under some kind of daemon supervisor then we may want
204 * to log to syslog but not to go into background */
205 openlog(progname, LOG_PID, LOG_DAEMON);
206 log_default = &log_syslog;
208 info("process ID %lu", (unsigned long)getpid());
210 srand(time(0)); /* don't start the same every time */
211 /* gcrypt initialization */
212 if(!gcry_check_version(NULL))
213 disorder_fatal(0, "gcry_check_version failed");
214 gcry_control(GCRYCTL_INIT_SECMEM, 1);
215 gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
216 /* make sure we can't have more than FD_SETSIZE files open (event.c does
217 * check but this provides an additional line of defence) */
218 if(getrlimit(RLIMIT_NOFILE, rl) < 0)
219 fatal(errno, "getrlimit RLIMIT_NOFILE");
220 if(rl->rlim_cur > FD_SETSIZE) {
221 rl->rlim_cur = FD_SETSIZE;
222 if(setrlimit(RLIMIT_NOFILE, rl) < 0)
223 fatal(errno, "setrlimit to reduce RLIMIT_NOFILE to %lu",
224 (unsigned long)rl->rlim_cur);
225 info("set RLIM_NOFILE to %lu", (unsigned long)rl->rlim_cur);
227 info("RLIM_NOFILE is %lu", (unsigned long)rl->rlim_cur);
228 /* create event loop */
230 if(ev_child_setup(ev)) fatal(0, "ev_child_setup failed");
232 config_uaudio_apis = uaudio_apis;
233 if(config_read(1, NULL))
234 fatal(0, "cannot read configuration");
235 /* make sure the home directory exists and has suitable permissions */
237 /* Start the speaker process (as root! - so it can choose its nice value) */
239 /* set server nice value _after_ starting the speaker, so that they
240 * are independently niceable */
241 xnice(config->nice_server);
244 /* make sure we're not root, whatever the config says */
245 if(getuid() == 0 || geteuid() == 0) fatal(0, "do not run as root");
246 /* open a lockfile - we only want one copy of the server to run at once. */
248 const char *lockfile;
252 lockfile = config_get_file("lock");
253 if((lockfd = open(lockfile, O_RDWR|O_CREAT, 0600)) < 0)
254 fatal(errno, "error opening %s", lockfile);
256 memset(&lock, 0, sizeof lock);
257 lock.l_type = F_WRLCK;
258 lock.l_whence = SEEK_SET;
259 if(fcntl(lockfd, F_SETLK, &lock) < 0)
260 fatal(errno, "error locking %s", lockfile);
262 /* initialize database environment */
263 trackdb_init(TRACKDB_NORMAL_RECOVER|TRACKDB_MAY_CREATE);
265 /* install new config (calls trackdb_open()) */
266 if(reconfigure(ev, 0))
267 fatal(0, "failed to read configuration");
268 /* Open the database */
269 trackdb_open(TRACKDB_CAN_UPGRADE);
270 /* load the queue and recently-played list */
273 /* Arrange timeouts for schedule actions */
275 /* pull in old users */
277 /* create a root login */
278 trackdb_create_root();
279 /* check for change to database parameters */
281 /* re-read config if we receive a SIGHUP */
282 if(ev_signal(ev, SIGHUP, handle_sighup, 0)) fatal(0, "ev_signal failed");
283 /* exit on SIGINT/SIGTERM */
284 if(ev_signal(ev, SIGINT, handle_sigint, 0)) fatal(0, "ev_signal failed");
285 if(ev_signal(ev, SIGTERM, handle_sigterm, 0)) fatal(0, "ev_signal failed");
287 signal(SIGPIPE, SIG_IGN);
288 /* Rescan immediately and then daily */
289 create_periodic(ev, periodic_rescan, 86400, 1/*immediate*/);
290 /* Tidy up the database once a minute */
291 create_periodic(ev, periodic_database_gc, 60, 0);
292 /* Check the volume immediately and then once a minute */
293 create_periodic(ev, periodic_volume_check, 60, 1);
294 /* Check for a playable track once a second */
295 create_periodic(ev, periodic_play_check, 1, 0);
296 /* Try adding a random track immediately and once every two seconds */
297 create_periodic(ev, periodic_add_random, 2, 1);
298 /* enter the event loop */
300 /* if we exit the event loop, something must have gone wrong */
301 fatal(errno, "ev_run returned %d", n);