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
20 #include "disorder-server.h"
24 static const struct option options
[] = {
25 { "help", no_argument
, 0, 'h' },
26 { "version", no_argument
, 0, 'V' },
27 { "config", required_argument
, 0, 'c' },
28 { "debug", no_argument
, 0, 'd' },
29 { "foreground", no_argument
, 0, 'f' },
30 { "log", required_argument
, 0, 'l' },
31 { "pidfile", required_argument
, 0, 'P' },
32 { "wide-open", no_argument
, 0, 'w' },
33 { "syslog", no_argument
, 0, 's' },
37 /* display usage message and terminate */
38 static void help(void) {
40 " disorderd [OPTIONS]\n"
42 " --help, -h Display usage message\n"
43 " --version, -V Display version number\n"
44 " --config PATH, -c PATH Set configuration file\n"
45 " --debug, -d Turn on debugging\n"
46 " --foreground, -f Do not become a daemon\n"
47 " --syslog, -s Log to syslog even with -f\n"
48 " --pidfile PATH, -P PATH Leave a pidfile\n");
53 /* signals ------------------------------------------------------------------ */
56 static int handle_sighup(ev_source
attribute((unused
)) *ev_
,
57 int attribute((unused
)) sig
,
58 void attribute((unused
)) *u
) {
59 info("received SIGHUP");
66 static int handle_sigint(ev_source
attribute((unused
)) *ev_
,
67 int attribute((unused
)) sig
,
68 void attribute((unused
)) *u
) {
69 info("received SIGINT");
73 static int handle_sigterm(ev_source
attribute((unused
)) *ev_
,
74 int attribute((unused
)) sig
,
75 void attribute((unused
)) *u
) {
76 info("received SIGTERM");
80 /* periodic actions --------------------------------------------------------- */
82 struct periodic_data
{
83 void (*callback
)(ev_source
*);
87 static int periodic_callback(ev_source
*ev_
,
88 const struct timeval
attribute((unused
)) *now
,
91 struct periodic_data
*const pd
= u
;
95 w
.tv_sec
+= pd
->period
;
96 ev_timeout(ev
, 0, &w
, periodic_callback
, pd
);
100 /** @brief Create a periodic action
101 * @param ev Event loop
102 * @param callback Callback function
103 * @param period Interval between calls in seconds
104 * @param immediate If true, call @p callback straight away
106 static void create_periodic(ev_source
*ev_
,
107 void (*callback
)(ev_source
*),
111 struct periodic_data
*const pd
= xmalloc(sizeof *pd
);
113 pd
->callback
= callback
;
119 ev_timeout(ev_
, 0, &w
, periodic_callback
, pd
);
122 static void periodic_rescan(ev_source
*ev_
) {
123 trackdb_rescan(ev_
, 1/*check*/, 0, 0);
126 static void periodic_database_gc(ev_source
attribute((unused
)) *ev_
) {
130 static void periodic_volume_check(ev_source
attribute((unused
)) *ev_
) {
134 if(!mixer_control(-1/*as configured*/, &l
, &r
, 0)) {
135 if(l
!= volume_left
|| r
!= volume_right
) {
138 snprintf(lb
, sizeof lb
, "%d", l
);
139 snprintf(rb
, sizeof rb
, "%d", r
);
140 eventlog("volume", lb
, rb
, (char *)0);
145 static void periodic_play_check(ev_source
*ev_
) {
149 static void periodic_add_random(ev_source
*ev_
) {
150 add_random_track(ev_
);
153 /* We fix the path to include the bindir and sbindir we were installed into */
154 static void fix_path(void) {
155 char *path
= getenv("PATH");
156 static char *newpath
;
157 /* static or libgc collects it! */
160 error(0, "PATH is not set at all!");
162 if(*finkbindir
&& strcmp(finkbindir
, "/"))
163 /* We appear to be a finkized mac; include fink on the path in case the
164 * tools we need are there. */
165 byte_xasprintf(&newpath
, "PATH=%s:%s:%s:%s",
166 path
, bindir
, sbindir
, finkbindir
);
168 byte_xasprintf(&newpath
, "PATH=%s:%s:%s", path
, bindir
, sbindir
);
173 int main(int argc
, char **argv
) {
174 int n
, background
= 1, logsyslog
= 0;
175 const char *pidfile
= 0;
179 if(!setlocale(LC_CTYPE
, "")) fatal(errno
, "error calling setlocale");
180 /* garbage-collect PCRE's memory */
181 pcre_malloc
= xmalloc
;
183 while((n
= getopt_long(argc
, argv
, "hVc:dfP:Ns", options
, 0)) >= 0) {
186 case 'V': version("disorderd");
187 case 'c': configfile
= optarg
; break;
188 case 'd': debugging
= 1; break;
189 case 'f': background
= 0; break;
190 case 'P': pidfile
= optarg
; break;
191 case 's': logsyslog
= 1; break;
192 case 'w': wideopen
= 1; break;
193 default: fatal(0, "invalid option");
196 /* go into background if necessary */
198 daemonize(progname
, LOG_DAEMON
, pidfile
);
200 /* If we're running under some kind of daemon supervisor then we may want
201 * to log to syslog but not to go into background */
202 openlog(progname
, LOG_PID
, LOG_DAEMON
);
203 log_default
= &log_syslog
;
205 info("process ID %lu", (unsigned long)getpid());
207 srand(time(0)); /* don't start the same every time */
208 /* gcrypt initialization */
209 gcry_control(GCRYCTL_INIT_SECMEM
, 1);
210 /* create event loop */
212 if(ev_child_setup(ev
)) fatal(0, "ev_child_setup failed");
215 fatal(0, "cannot read configuration");
216 /* make sure the home directory exists and has suitable permissions */
218 /* Start the speaker process (as root! - so it can choose its nice value) */
220 /* set server nice value _after_ starting the speaker, so that they
221 * are independently niceable */
222 xnice(config
->nice_server
);
225 /* make sure we're not root, whatever the config says */
226 if(getuid() == 0 || geteuid() == 0) fatal(0, "do not run as root");
227 /* open a lockfile - we only want one copy of the server to run at once. */
229 const char *lockfile
;
233 lockfile
= config_get_file("lock");
234 if((lockfd
= open(lockfile
, O_RDWR
|O_CREAT
, 0600)) < 0)
235 fatal(errno
, "error opening %s", lockfile
);
237 memset(&lock
, 0, sizeof lock
);
238 lock
.l_type
= F_WRLCK
;
239 lock
.l_whence
= SEEK_SET
;
240 if(fcntl(lockfd
, F_SETLK
, &lock
) < 0)
241 fatal(errno
, "error locking %s", lockfile
);
243 /* initialize database environment */
244 trackdb_init(TRACKDB_NORMAL_RECOVER
|TRACKDB_MAY_CREATE
);
246 /* install new config (calls trackdb_open()) */
248 /* pull in old users */
250 /* create a root login */
251 trackdb_create_root();
252 /* re-read config if we receive a SIGHUP */
253 if(ev_signal(ev
, SIGHUP
, handle_sighup
, 0)) fatal(0, "ev_signal failed");
254 /* exit on SIGINT/SIGTERM */
255 if(ev_signal(ev
, SIGINT
, handle_sigint
, 0)) fatal(0, "ev_signal failed");
256 if(ev_signal(ev
, SIGTERM
, handle_sigterm
, 0)) fatal(0, "ev_signal failed");
258 signal(SIGPIPE
, SIG_IGN
);
259 /* Rescan immediately and then daily */
260 create_periodic(ev
, periodic_rescan
, 86400, 1/*immediate*/);
261 /* Tidy up the database once a minute */
262 create_periodic(ev
, periodic_database_gc
, 60, 0);
263 /* Check the volume immediately and then once a minute */
264 create_periodic(ev
, periodic_volume_check
, 60, 1);
265 /* Check for a playable track once a second */
266 create_periodic(ev
, periodic_play_check
, 1, 0);
267 /* Try adding a random track immediately and once every two seconds */
268 create_periodic(ev
, periodic_add_random
, 2, 1);
269 /* enter the event loop */
271 /* if we exit the event loop, something must have gone wrong */
272 fatal(errno
, "ev_run returned %d", n
);