2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2008 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 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * 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, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
28 #include <sys/types.h>
34 #include <sys/socket.h>
43 #include "daemonize.h"
46 #include "configuration.h"
64 static const struct option options
[] = {
65 { "help", no_argument
, 0, 'h' },
66 { "version", no_argument
, 0, 'V' },
67 { "config", required_argument
, 0, 'c' },
68 { "debug", no_argument
, 0, 'd' },
69 { "foreground", no_argument
, 0, 'f' },
70 { "log", required_argument
, 0, 'l' },
71 { "pidfile", required_argument
, 0, 'P' },
72 { "wide-open", no_argument
, 0, 'w' },
73 { "syslog", no_argument
, 0, 's' },
77 /* display usage message and terminate */
78 static void help(void) {
80 " disorderd [OPTIONS]\n"
82 " --help, -h Display usage message\n"
83 " --version, -V Display version number\n"
84 " --config PATH, -c PATH Set configuration file\n"
85 " --debug, -d Turn on debugging\n"
86 " --foreground, -f Do not become a daemon\n"
87 " --syslog, -s Log to syslog even with -f\n"
88 " --pidfile PATH, -P PATH Leave a pidfile\n");
93 /* signals ------------------------------------------------------------------ */
96 static int handle_sighup(ev_source
attribute((unused
)) *ev_
,
97 int attribute((unused
)) sig
,
98 void attribute((unused
)) *u
) {
99 info("received SIGHUP");
106 static int handle_sigint(ev_source
attribute((unused
)) *ev_
,
107 int attribute((unused
)) sig
,
108 void attribute((unused
)) *u
) {
109 info("received SIGINT");
113 static int handle_sigterm(ev_source
attribute((unused
)) *ev_
,
114 int attribute((unused
)) sig
,
115 void attribute((unused
)) *u
) {
116 info("received SIGTERM");
120 /* periodic actions --------------------------------------------------------- */
122 struct periodic_data
{
123 void (*callback
)(ev_source
*);
127 static int periodic_callback(ev_source
*ev_
,
128 const struct timeval
attribute((unused
)) *now
,
131 struct periodic_data
*const pd
= u
;
135 w
.tv_sec
+= pd
->period
;
136 ev_timeout(ev
, 0, &w
, periodic_callback
, pd
);
140 /** @brief Create a periodic action
141 * @param ev Event loop
142 * @param callback Callback function
143 * @param period Interval between calls in seconds
144 * @param immediate If true, call @p callback straight away
146 static void create_periodic(ev_source
*ev_
,
147 void (*callback
)(ev_source
*),
151 struct periodic_data
*const pd
= xmalloc(sizeof *pd
);
153 pd
->callback
= callback
;
159 ev_timeout(ev_
, 0, &w
, periodic_callback
, pd
);
162 static void periodic_rescan(ev_source
*ev_
) {
163 trackdb_rescan(ev_
, 1/*check*/, 0, 0);
166 static void periodic_database_gc(ev_source
attribute((unused
)) *ev_
) {
170 static void periodic_volume_check(ev_source
attribute((unused
)) *ev_
) {
174 if(!mixer_control(-1/*as configured*/, &l
, &r
, 0)) {
175 if(l
!= volume_left
|| r
!= volume_right
) {
178 snprintf(lb
, sizeof lb
, "%d", l
);
179 snprintf(rb
, sizeof rb
, "%d", r
);
180 eventlog("volume", lb
, rb
, (char *)0);
185 static void periodic_play_check(ev_source
*ev_
) {
189 static void periodic_add_random(ev_source
*ev_
) {
190 add_random_track(ev_
);
193 /* We fix the path to include the bindir and sbindir we were installed into */
194 static void fix_path(void) {
195 char *path
= getenv("PATH");
196 static char *newpath
;
197 /* static or libgc collects it! */
200 error(0, "PATH is not set at all!");
202 if(*finkbindir
&& strcmp(finkbindir
, "/"))
203 /* We appear to be a finkized mac; include fink on the path in case the
204 * tools we need are there. */
205 byte_xasprintf(&newpath
, "PATH=%s:%s:%s:%s",
206 path
, bindir
, sbindir
, finkbindir
);
208 byte_xasprintf(&newpath
, "PATH=%s:%s:%s", path
, bindir
, sbindir
);
213 int main(int argc
, char **argv
) {
214 int n
, background
= 1, logsyslog
= 0;
215 const char *pidfile
= 0;
219 if(!setlocale(LC_CTYPE
, "")) fatal(errno
, "error calling setlocale");
220 /* garbage-collect PCRE's memory */
221 pcre_malloc
= xmalloc
;
223 while((n
= getopt_long(argc
, argv
, "hVc:dfP:Ns", options
, 0)) >= 0) {
226 case 'V': version("disorderd");
227 case 'c': configfile
= optarg
; break;
228 case 'd': debugging
= 1; break;
229 case 'f': background
= 0; break;
230 case 'P': pidfile
= optarg
; break;
231 case 's': logsyslog
= 1; break;
232 case 'w': wideopen
= 1; break;
233 default: fatal(0, "invalid option");
236 /* go into background if necessary */
238 daemonize(progname
, LOG_DAEMON
, pidfile
);
240 /* If we're running under some kind of daemon supervisor then we may want
241 * to log to syslog but not to go into background */
242 openlog(progname
, LOG_PID
, LOG_DAEMON
);
243 log_default
= &log_syslog
;
245 info("process ID %lu", (unsigned long)getpid());
247 srand(time(0)); /* don't start the same every time */
248 /* gcrypt initialization */
249 gcry_control(GCRYCTL_INIT_SECMEM
, 1);
250 /* create event loop */
252 if(ev_child_setup(ev
)) fatal(0, "ev_child_setup failed");
255 fatal(0, "cannot read configuration");
256 /* make sure the home directory exists and has suitable permissions */
258 /* Start the speaker process (as root! - so it can choose its nice value) */
260 /* set server nice value _after_ starting the speaker, so that they
261 * are independently niceable */
262 xnice(config
->nice_server
);
265 /* make sure we're not root, whatever the config says */
266 if(getuid() == 0 || geteuid() == 0) fatal(0, "do not run as root");
267 /* open a lockfile - we only want one copy of the server to run at once. */
269 const char *lockfile
;
273 lockfile
= config_get_file("lock");
274 if((lockfd
= open(lockfile
, O_RDWR
|O_CREAT
, 0600)) < 0)
275 fatal(errno
, "error opening %s", lockfile
);
277 memset(&lock
, 0, sizeof lock
);
278 lock
.l_type
= F_WRLCK
;
279 lock
.l_whence
= SEEK_SET
;
280 if(fcntl(lockfd
, F_SETLK
, &lock
) < 0)
281 fatal(errno
, "error locking %s", lockfile
);
283 /* initialize database environment */
284 trackdb_init(TRACKDB_NORMAL_RECOVER
|TRACKDB_MAY_CREATE
);
286 /* install new config (calls trackdb_open()) */
288 /* pull in old users */
290 /* create a root login */
291 trackdb_create_root();
292 /* re-read config if we receive a SIGHUP */
293 if(ev_signal(ev
, SIGHUP
, handle_sighup
, 0)) fatal(0, "ev_signal failed");
294 /* exit on SIGINT/SIGTERM */
295 if(ev_signal(ev
, SIGINT
, handle_sigint
, 0)) fatal(0, "ev_signal failed");
296 if(ev_signal(ev
, SIGTERM
, handle_sigterm
, 0)) 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 /* enter the event loop */
311 /* if we exit the event loop, something must have gone wrong */
312 fatal(errno
, "ev_run returned %d", n
);