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 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 disorder_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
);
172 disorder_info("%s", newpath
);
175 int main(int argc
, char **argv
) {
176 int n
, background
= 1, logsyslog
= 0;
177 const char *pidfile
= 0;
182 if(!setlocale(LC_CTYPE
, ""))
183 disorder_fatal(errno
, "error calling setlocale");
184 /* garbage-collect PCRE's memory */
185 pcre_malloc
= xmalloc
;
187 while((n
= getopt_long(argc
, argv
, "hVc:dfP:Ns", options
, 0)) >= 0) {
190 case 'V': version("disorderd");
191 case 'c': configfile
= optarg
; break;
192 case 'd': debugging
= 1; break;
193 case 'f': background
= 0; break;
194 case 'P': pidfile
= optarg
; break;
195 case 's': logsyslog
= 1; break;
196 case 'w': wideopen
= 1; break;
197 default: disorder_fatal(0, "invalid option");
200 /* go into background if necessary */
202 daemonize(progname
, LOG_DAEMON
, pidfile
);
204 /* If we're running under some kind of daemon supervisor then we may want
205 * to log to syslog but not to go into background */
206 openlog(progname
, LOG_PID
, LOG_DAEMON
);
207 log_default
= &log_syslog
;
209 disorder_info("process ID %lu", (unsigned long)getpid());
211 srand(xtime(0)); /* don't start the same every time */
212 /* gcrypt initialization */
213 if(!gcry_check_version(NULL
))
214 disorder_fatal(0, "gcry_check_version failed");
215 gcry_control(GCRYCTL_INIT_SECMEM
, 1);
216 gcry_control (GCRYCTL_INITIALIZATION_FINISHED
, 0);
217 /* make sure we can't have more than FD_SETSIZE files open (event.c does
218 * check but this provides an additional line of defence) */
219 if(getrlimit(RLIMIT_NOFILE
, rl
) < 0)
220 disorder_fatal(errno
, "getrlimit RLIMIT_NOFILE");
221 if(rl
->rlim_cur
> FD_SETSIZE
) {
222 rl
->rlim_cur
= FD_SETSIZE
;
223 if(setrlimit(RLIMIT_NOFILE
, rl
) < 0)
224 disorder_fatal(errno
, "setrlimit to reduce RLIMIT_NOFILE to %lu",
225 (unsigned long)rl
->rlim_cur
);
226 disorder_info("set RLIM_NOFILE to %lu", (unsigned long)rl
->rlim_cur
);
228 disorder_info("RLIM_NOFILE is %lu", (unsigned long)rl
->rlim_cur
);
229 /* create event loop */
231 if(ev_child_setup(ev
)) disorder_fatal(0, "ev_child_setup failed");
233 config_uaudio_apis
= uaudio_apis
;
234 if(config_read(1, NULL
))
235 disorder_fatal(0, "cannot read configuration");
236 /* make sure the home directory exists and has suitable permissions */
238 /* Start the speaker process (as root! - so it can choose its nice value) */
240 /* set server nice value _after_ starting the speaker, so that they
241 * are independently niceable */
242 xnice(config
->nice_server
);
245 /* make sure we're not root, whatever the config says */
246 if(getuid() == 0 || geteuid() == 0)
247 disorder_fatal(0, "do not run as root");
248 /* open a lockfile - we only want one copy of the server to run at once. */
250 const char *lockfile
;
254 lockfile
= config_get_file("lock");
255 if((lockfd
= open(lockfile
, O_RDWR
|O_CREAT
, 0600)) < 0)
256 disorder_fatal(errno
, "error opening %s", lockfile
);
258 memset(&lock
, 0, sizeof lock
);
259 lock
.l_type
= F_WRLCK
;
260 lock
.l_whence
= SEEK_SET
;
261 if(fcntl(lockfd
, F_SETLK
, &lock
) < 0)
262 disorder_fatal(errno
, "error locking %s", lockfile
);
264 /* initialize database environment */
265 trackdb_init(TRACKDB_NORMAL_RECOVER
|TRACKDB_MAY_CREATE
);
267 /* install new config; don't create socket */
268 if(reconfigure(ev
, RECONFIGURE_FIRST
))
269 disorder_fatal(0, "failed to read configuration");
270 /* Open the database */
271 trackdb_open(TRACKDB_CAN_UPGRADE
);
272 /* load the queue and recently-played list */
275 /* Arrange timeouts for schedule actions */
277 /* pull in old users */
279 /* create a root login */
280 trackdb_create_root();
283 /* check for change to database parameters */
285 /* re-read config if we receive a SIGHUP */
286 if(ev_signal(ev
, SIGHUP
, handle_sighup
, 0))
287 disorder_fatal(0, "ev_signal failed");
288 /* exit on SIGINT/SIGTERM */
289 if(ev_signal(ev
, SIGINT
, handle_sigint
, 0))
290 disorder_fatal(0, "ev_signal failed");
291 if(ev_signal(ev
, SIGTERM
, handle_sigterm
, 0))
292 disorder_fatal(0, "ev_signal failed");
294 signal(SIGPIPE
, SIG_IGN
);
295 /* Rescan immediately and then daily */
296 create_periodic(ev
, periodic_rescan
, 86400, 1/*immediate*/);
297 /* Tidy up the database once a minute */
298 create_periodic(ev
, periodic_database_gc
, 60, 0);
299 /* Check the volume immediately and then once a minute */
300 create_periodic(ev
, periodic_volume_check
, 60, 1);
301 /* Check for a playable track once a second */
302 create_periodic(ev
, periodic_play_check
, 1, 0);
303 /* Try adding a random track immediately and once every two seconds */
304 create_periodic(ev
, periodic_add_random
, 2, 1);
305 /* Issue a rescan when devices are mounted or unmouted */
306 create_periodic(ev
, periodic_mount_check
, MOUNT_CHECK_INTERVAL
, 1);
307 /* enter the event loop */
309 /* if we exit the event loop, something must have gone wrong */
310 disorder_fatal(errno
, "ev_run returned %d", n
);