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);