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 void rescan_after(long offset
);
65 static void dbgc_after(long offset
);
66 static void volumecheck_after(long offset
);
68 static const struct option options
[] = {
69 { "help", no_argument
, 0, 'h' },
70 { "version", no_argument
, 0, 'V' },
71 { "config", required_argument
, 0, 'c' },
72 { "debug", no_argument
, 0, 'd' },
73 { "foreground", no_argument
, 0, 'f' },
74 { "log", required_argument
, 0, 'l' },
75 { "pidfile", required_argument
, 0, 'P' },
76 { "wide-open", no_argument
, 0, 'w' },
77 { "syslog", no_argument
, 0, 's' },
81 /* display usage message and terminate */
82 static void help(void) {
84 " disorderd [OPTIONS]\n"
86 " --help, -h Display usage message\n"
87 " --version, -V Display version number\n"
88 " --config PATH, -c PATH Set configuration file\n"
89 " --debug, -d Turn on debugging\n"
90 " --foreground, -f Do not become a daemon\n"
91 " --syslog, -s Log to syslog even with -f\n"
92 " --pidfile PATH, -P PATH Leave a pidfile\n");
98 static int handle_sighup(ev_source
attribute((unused
)) *ev_
,
99 int attribute((unused
)) sig
,
100 void attribute((unused
)) *u
) {
101 info("received SIGHUP");
108 static int handle_sigint(ev_source
attribute((unused
)) *ev_
,
109 int attribute((unused
)) sig
,
110 void attribute((unused
)) *u
) {
111 info("received SIGINT");
115 static int handle_sigterm(ev_source
attribute((unused
)) *ev_
,
116 int attribute((unused
)) sig
,
117 void attribute((unused
)) *u
) {
118 info("received SIGTERM");
122 static int rescan_again(ev_source
*ev_
,
123 const struct timeval
attribute((unused
)) *now
,
124 void attribute((unused
)) *u
) {
125 trackdb_rescan(ev_
, 1/*check*/);
130 static void rescan_after(long offset
) {
135 ev_timeout(ev
, 0, &w
, rescan_again
, 0);
138 static int dbgc_again(ev_source
attribute((unused
)) *ev_
,
139 const struct timeval
attribute((unused
)) *now
,
140 void attribute((unused
)) *u
) {
146 static void dbgc_after(long offset
) {
151 ev_timeout(ev
, 0, &w
, dbgc_again
, 0);
154 static int volumecheck_again(ev_source
attribute((unused
)) *ev_
,
155 const struct timeval
attribute((unused
)) *now
,
156 void attribute((unused
)) *u
) {
160 if(!mixer_control(&l
, &r
, 0)) {
161 if(l
!= volume_left
|| r
!= volume_right
) {
164 snprintf(lb
, sizeof lb
, "%d", l
);
165 snprintf(rb
, sizeof rb
, "%d", r
);
166 eventlog("volume", lb
, rb
, (char *)0);
169 volumecheck_after(60);
173 static void volumecheck_after(long offset
) {
178 ev_timeout(ev
, 0, &w
, volumecheck_again
, 0);
181 /* We fix the path to include the bindir and sbindir we were installed into */
182 static void fix_path(void) {
183 char *path
= getenv("PATH");
184 static char *newpath
;
185 /* static or libgc collects it! */
188 error(0, "PATH is not set at all!");
190 if(*finkbindir
&& strcmp(finkbindir
, "/"))
191 /* We appear to be a finkized mac; include fink on the path in case the
192 * tools we need are there. */
193 byte_xasprintf(&newpath
, "PATH=%s:%s:%s:%s",
194 path
, bindir
, sbindir
, finkbindir
);
196 byte_xasprintf(&newpath
, "PATH=%s:%s:%s", path
, bindir
, sbindir
);
201 int main(int argc
, char **argv
) {
202 int n
, background
= 1, logsyslog
= 0;
203 const char *pidfile
= 0;
207 if(!setlocale(LC_CTYPE
, "")) fatal(errno
, "error calling setlocale");
208 /* garbage-collect PCRE's memory */
209 pcre_malloc
= xmalloc
;
211 while((n
= getopt_long(argc
, argv
, "hVc:dfP:Ns", options
, 0)) >= 0) {
214 case 'V': version("disorderd");
215 case 'c': configfile
= optarg
; break;
216 case 'd': debugging
= 1; break;
217 case 'f': background
= 0; break;
218 case 'P': pidfile
= optarg
; break;
219 case 's': logsyslog
= 1; break;
220 case 'w': wideopen
= 1; break;
221 default: fatal(0, "invalid option");
224 /* go into background if necessary */
226 daemonize(progname
, LOG_DAEMON
, pidfile
);
228 /* If we're running under some kind of daemon supervisor then we may want
229 * to log to syslog but not to go into background */
230 openlog(progname
, LOG_PID
, LOG_DAEMON
);
231 log_default
= &log_syslog
;
233 info("process ID %lu", (unsigned long)getpid());
235 srand(time(0)); /* don't start the same every time */
236 /* gcrypt initialization */
237 gcry_control(GCRYCTL_INIT_SECMEM
, 1);
238 /* create event loop */
240 if(ev_child_setup(ev
)) fatal(0, "ev_child_setup failed");
243 fatal(0, "cannot read configuration");
244 /* make sure the home directory exists and has suitable permissions */
246 /* Start the speaker process (as root! - so it can choose its nice value) */
248 /* set server nice value _after_ starting the speaker, so that they
249 * are independently niceable */
250 xnice(config
->nice_server
);
253 /* make sure we're not root, whatever the config says */
254 if(getuid() == 0 || geteuid() == 0) fatal(0, "do not run as root");
255 /* open a lockfile - we only want one copy of the server to run at once. */
257 const char *lockfile
;
261 lockfile
= config_get_file("lock");
262 if((lockfd
= open(lockfile
, O_RDWR
|O_CREAT
, 0600)) < 0)
263 fatal(errno
, "error opening %s", lockfile
);
265 memset(&lock
, 0, sizeof lock
);
266 lock
.l_type
= F_WRLCK
;
267 lock
.l_whence
= SEEK_SET
;
268 if(fcntl(lockfd
, F_SETLK
, &lock
) < 0)
269 fatal(errno
, "error locking %s", lockfile
);
271 /* initialize database environment */
272 trackdb_init(TRACKDB_NORMAL_RECOVER
|TRACKDB_MAY_CREATE
);
274 /* install new config (calls trackdb_open()) */
276 /* pull in old users */
278 /* create a root login */
279 trackdb_create_root();
280 /* re-read config if we receive a SIGHUP */
281 if(ev_signal(ev
, SIGHUP
, handle_sighup
, 0)) fatal(0, "ev_signal failed");
282 /* exit on SIGINT/SIGTERM */
283 if(ev_signal(ev
, SIGINT
, handle_sigint
, 0)) fatal(0, "ev_signal failed");
284 if(ev_signal(ev
, SIGTERM
, handle_sigterm
, 0)) fatal(0, "ev_signal failed");
286 signal(SIGPIPE
, SIG_IGN
);
287 /* Start a rescan straight away */
288 trackdb_rescan(ev
, 1/*check*/);
289 /* We'll rescan again after a day */
291 /* periodically tidy up the database */
293 /* periodically check the volume */
294 volumecheck_again(0, 0, 0);
295 /* set initial state */
298 /* enter the event loop */
300 /* if we exit the event loop, something must have gone wrong */
301 fatal(errno
, "ev_run returned %d", n
);