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
);