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 disorder_info("received SIGHUP");
61 reconfigure(ev, RECONFIGURE_RELOADING);
67 static int handle_sigint(ev_source attribute((unused)) *ev_,
68 int attribute((unused)) sig,
69 void attribute((unused)) *u) {
70 disorder_info("received SIGINT");
74 static int handle_sigterm(ev_source attribute((unused)) *ev_,
75 int attribute((unused)) sig,
76 void attribute((unused)) *u) {
77 disorder_info("received SIGTERM");
81 /* periodic actions --------------------------------------------------------- */
83 /** @brief A job executed periodically by the server */
84 struct periodic_data {
85 /** @brief Callback to process job */
86 void (*callback)(ev_source *);
88 /** @brief Period of job in seconds */
92 static int periodic_callback(ev_source *ev_,
93 const struct timeval attribute((unused)) *now,
96 struct periodic_data *const pd = u;
100 w.tv_sec += pd->period;
101 ev_timeout(ev, 0, &w, periodic_callback, pd);
105 /** @brief Create a periodic action
106 * @param ev_ Event loop
107 * @param callback Callback function
108 * @param period Interval between calls in seconds
109 * @param immediate If true, call @p callback straight away
111 static void create_periodic(ev_source *ev_,
112 void (*callback)(ev_source *),
116 struct periodic_data *const pd = xmalloc(sizeof *pd);
118 pd->callback = callback;
124 ev_timeout(ev_, 0, &w, periodic_callback, pd);
127 static void periodic_rescan(ev_source *ev_) {
128 trackdb_rescan(ev_, 1/*check*/, 0, 0);
131 static void periodic_database_gc(ev_source attribute((unused)) *ev_) {
135 static void periodic_volume_check(ev_source attribute((unused)) *ev_) {
139 if(api && api->get_volume) {
140 api->get_volume(&l, &r);
141 if(l != volume_left || r != volume_right) {
144 snprintf(lb, sizeof lb, "%d", l);
145 snprintf(rb, sizeof rb, "%d", r);
146 eventlog("volume", lb, rb, (char *)0);
151 static void periodic_play_check(ev_source *ev_) {
155 static void periodic_add_random(ev_source *ev_) {
156 add_random_track(ev_);
159 /* We fix the path to include the bindir and sbindir we were installed into */
160 static void fix_path(void) {
161 char *path = getenv("PATH");
162 static char *newpath;
163 /* static or libgc collects it! */
166 disorder_error(0, "PATH is not set at all!");
168 if(*finkbindir && strcmp(finkbindir, "/"))
169 /* We appear to be a finkized mac; include fink on the path in case the
170 * tools we need are there. */
171 byte_xasprintf(&newpath, "PATH=%s:%s:%s:%s",
172 path, bindir, sbindir, finkbindir);
174 byte_xasprintf(&newpath, "PATH=%s:%s:%s", path, bindir, sbindir);
176 disorder_info("%s", newpath);
179 int main(int argc, char **argv) {
180 int n, background = 1, logsyslog = 0;
181 const char *pidfile = 0;
186 if(!setlocale(LC_CTYPE, ""))
187 disorder_fatal(errno, "error calling setlocale");
188 /* garbage-collect PCRE's memory */
189 pcre_malloc = xmalloc;
191 while((n = getopt_long(argc, argv, "hVc:dfP:Ns", options, 0)) >= 0) {
194 case 'V': version("disorderd");
195 case 'c': configfile = optarg; break;
196 case 'd': debugging = 1; break;
197 case 'f': background = 0; break;
198 case 'P': pidfile = optarg; break;
199 case 's': logsyslog = 1; break;
200 case 'w': wideopen = 1; break;
201 default: disorder_fatal(0, "invalid option");
204 /* go into background if necessary */
206 daemonize(progname, LOG_DAEMON, pidfile);
208 /* If we're running under some kind of daemon supervisor then we may want
209 * to log to syslog but not to go into background */
210 openlog(progname, LOG_PID, LOG_DAEMON);
211 log_default = &log_syslog;
213 disorder_info("process ID %lu", (unsigned long)getpid());
215 srand(xtime(0)); /* don't start the same every time */
216 /* gcrypt initialization */
217 if(!gcry_check_version(NULL))
218 disorder_fatal(0, "gcry_check_version failed");
219 gcry_control(GCRYCTL_INIT_SECMEM, 1);
220 gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
221 /* make sure we can't have more than FD_SETSIZE files open (event.c does
222 * check but this provides an additional line of defence) */
223 if(getrlimit(RLIMIT_NOFILE, rl) < 0)
224 disorder_fatal(errno, "getrlimit RLIMIT_NOFILE");
225 if(rl->rlim_cur > FD_SETSIZE) {
226 rl->rlim_cur = FD_SETSIZE;
227 if(setrlimit(RLIMIT_NOFILE, rl) < 0)
228 disorder_fatal(errno, "setrlimit to reduce RLIMIT_NOFILE to %lu",
229 (unsigned long)rl->rlim_cur);
230 disorder_info("set RLIM_NOFILE to %lu", (unsigned long)rl->rlim_cur);
232 disorder_info("RLIM_NOFILE is %lu", (unsigned long)rl->rlim_cur);
233 /* create event loop */
235 if(ev_child_setup(ev)) disorder_fatal(0, "ev_child_setup failed");
237 config_uaudio_apis = uaudio_apis;
238 if(config_read(1, NULL))
239 disorder_fatal(0, "cannot read configuration");
240 /* make sure the home directory exists and has suitable permissions */
242 /* Start the speaker process (as root! - so it can choose its nice value) */
244 /* set server nice value _after_ starting the speaker, so that they
245 * are independently niceable */
246 xnice(config->nice_server);
249 /* make sure we're not root, whatever the config says */
250 if(getuid() == 0 || geteuid() == 0)
251 disorder_fatal(0, "do not run as root");
252 /* open a lockfile - we only want one copy of the server to run at once. */
254 const char *lockfile;
258 lockfile = config_get_file("lock");
259 if((lockfd = open(lockfile, O_RDWR|O_CREAT, 0600)) < 0)
260 disorder_fatal(errno, "error opening %s", lockfile);
262 memset(&lock, 0, sizeof lock);
263 lock.l_type = F_WRLCK;
264 lock.l_whence = SEEK_SET;
265 if(fcntl(lockfd, F_SETLK, &lock) < 0)
266 disorder_fatal(errno, "error locking %s", lockfile);
268 /* initialize database environment */
269 trackdb_init(TRACKDB_NORMAL_RECOVER|TRACKDB_MAY_CREATE);
271 /* install new config; don't create socket */
272 if(reconfigure(ev, RECONFIGURE_FIRST))
273 disorder_fatal(0, "failed to read configuration");
274 /* Open the database */
275 trackdb_open(TRACKDB_CAN_UPGRADE);
276 /* load the queue and recently-played list */
279 /* Arrange timeouts for schedule actions */
281 /* pull in old users */
283 /* create a root login */
284 trackdb_create_root();
287 /* check for change to database parameters */
289 /* re-read config if we receive a SIGHUP */
290 if(ev_signal(ev, SIGHUP, handle_sighup, 0))
291 disorder_fatal(0, "ev_signal failed");
292 /* exit on SIGINT/SIGTERM */
293 if(ev_signal(ev, SIGINT, handle_sigint, 0))
294 disorder_fatal(0, "ev_signal failed");
295 if(ev_signal(ev, SIGTERM, handle_sigterm, 0))
296 disorder_fatal(0, "ev_signal failed");
298 signal(SIGPIPE, SIG_IGN);
299 /* Rescan immediately and then daily */
300 create_periodic(ev, periodic_rescan, 86400, 1/*immediate*/);
301 /* Tidy up the database once a minute */
302 create_periodic(ev, periodic_database_gc, 60, 0);
303 /* Check the volume immediately and then once a minute */
304 create_periodic(ev, periodic_volume_check, 60, 1);
305 /* Check for a playable track once a second */
306 create_periodic(ev, periodic_play_check, 1, 0);
307 /* Try adding a random track immediately and once every two seconds */
308 create_periodic(ev, periodic_add_random, 2, 1);
309 /* Issue a rescan when devices are mounted or unmouted */
310 create_periodic(ev, periodic_mount_check, MOUNT_CHECK_INTERVAL, 1);
311 /* enter the event loop */
313 /* if we exit the event loop, something must have gone wrong */
314 disorder_fatal(errno, "ev_run returned %d", n);