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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
36be7e6a | 3 | * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell |
460b9539 | 4 | * |
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. | |
9 | * | |
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. | |
14 | * | |
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 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
6d2d327c | 22 | #include "types.h" |
460b9539 | 23 | |
24 | #include <stdio.h> | |
25 | #include <getopt.h> | |
26 | #include <pwd.h> | |
27 | #include <grp.h> | |
28 | #include <sys/types.h> | |
29 | #include <errno.h> | |
30 | #include <stdlib.h> | |
31 | #include <string.h> | |
32 | #include <unistd.h> | |
33 | #include <signal.h> | |
34 | #include <sys/socket.h> | |
35 | #include <time.h> | |
36 | #include <locale.h> | |
37 | #include <syslog.h> | |
38 | #include <sys/time.h> | |
39 | #include <pcre.h> | |
40 | #include <fcntl.h> | |
41 | ||
42 | #include "daemonize.h" | |
43 | #include "event.h" | |
44 | #include "log.h" | |
45 | #include "configuration.h" | |
46 | #include "trackdb.h" | |
47 | #include "queue.h" | |
48 | #include "mem.h" | |
49 | #include "play.h" | |
50 | #include "server.h" | |
51 | #include "state.h" | |
52 | #include "syscalls.h" | |
53 | #include "defs.h" | |
54 | #include "user.h" | |
55 | #include "mixer.h" | |
56 | #include "eventlog.h" | |
e83d0967 | 57 | #include "printf.h" |
36be7e6a | 58 | #include "setup.h" |
460b9539 | 59 | |
60 | static ev_source *ev; | |
61 | ||
62 | static void rescan_after(long offset); | |
63 | static void dbgc_after(long offset); | |
64 | static void volumecheck_after(long offset); | |
65 | ||
66 | static const struct option options[] = { | |
67 | { "help", no_argument, 0, 'h' }, | |
68 | { "version", no_argument, 0, 'V' }, | |
69 | { "config", required_argument, 0, 'c' }, | |
70 | { "debug", no_argument, 0, 'd' }, | |
71 | { "foreground", no_argument, 0, 'f' }, | |
72 | { "log", required_argument, 0, 'l' }, | |
73 | { "pidfile", required_argument, 0, 'P' }, | |
74 | { "no-initial-rescan", no_argument, 0, 'N' }, | |
18e6d6e6 | 75 | { "wide-open", no_argument, 0, 'w' }, |
e83d0967 | 76 | { "syslog", no_argument, 0, 's' }, |
460b9539 | 77 | { 0, 0, 0, 0 } |
78 | }; | |
79 | ||
80 | /* display usage message and terminate */ | |
81 | static void help(void) { | |
82 | xprintf("Usage:\n" | |
83 | " disorderd [OPTIONS]\n" | |
84 | "Options:\n" | |
85 | " --help, -h Display usage message\n" | |
86 | " --version, -V Display version number\n" | |
87 | " --config PATH, -c PATH Set configuration file\n" | |
88 | " --debug, -d Turn on debugging\n" | |
89 | " --foreground, -f Do not become a daemon\n" | |
e83d0967 | 90 | " --syslog, -s Log to syslog even with -f\n" |
460b9539 | 91 | " --pidfile PATH, -P PATH Leave a pidfile\n"); |
92 | xfclose(stdout); | |
93 | exit(0); | |
94 | } | |
95 | ||
96 | /* display version number and terminate */ | |
97 | static void version(void) { | |
98 | xprintf("disorderd version %s\n", disorder_version_string); | |
99 | xfclose(stdout); | |
100 | exit(0); | |
101 | } | |
102 | ||
103 | /* SIGHUP callback */ | |
104 | static int handle_sighup(ev_source attribute((unused)) *ev_, | |
105 | int attribute((unused)) sig, | |
106 | void attribute((unused)) *u) { | |
107 | info("received SIGHUP"); | |
108 | reconfigure(ev, 1); | |
109 | return 0; | |
110 | } | |
111 | ||
112 | /* fatal signals */ | |
113 | ||
114 | static int handle_sigint(ev_source attribute((unused)) *ev_, | |
115 | int attribute((unused)) sig, | |
116 | void attribute((unused)) *u) { | |
117 | info("received SIGINT"); | |
118 | quit(ev); | |
119 | } | |
120 | ||
121 | static int handle_sigterm(ev_source attribute((unused)) *ev_, | |
122 | int attribute((unused)) sig, | |
123 | void attribute((unused)) *u) { | |
124 | info("received SIGTERM"); | |
125 | quit(ev); | |
126 | } | |
127 | ||
128 | static int rescan_again(ev_source *ev_, | |
129 | const struct timeval attribute((unused)) *now, | |
130 | void attribute((unused)) *u) { | |
131 | trackdb_rescan(ev_); | |
132 | rescan_after(86400); | |
133 | return 0; | |
134 | } | |
135 | ||
136 | static void rescan_after(long offset) { | |
137 | struct timeval w; | |
138 | ||
139 | gettimeofday(&w, 0); | |
140 | w.tv_sec += offset; | |
141 | ev_timeout(ev, 0, &w, rescan_again, 0); | |
142 | } | |
143 | ||
144 | static int dbgc_again(ev_source attribute((unused)) *ev_, | |
145 | const struct timeval attribute((unused)) *now, | |
146 | void attribute((unused)) *u) { | |
147 | trackdb_gc(); | |
148 | dbgc_after(60); | |
149 | return 0; | |
150 | } | |
151 | ||
152 | static void dbgc_after(long offset) { | |
153 | struct timeval w; | |
154 | ||
155 | gettimeofday(&w, 0); | |
156 | w.tv_sec += offset; | |
157 | ev_timeout(ev, 0, &w, dbgc_again, 0); | |
158 | } | |
159 | ||
160 | static int volumecheck_again(ev_source attribute((unused)) *ev_, | |
161 | const struct timeval attribute((unused)) *now, | |
162 | void attribute((unused)) *u) { | |
163 | int l, r; | |
164 | char lb[32], rb[32]; | |
165 | ||
166 | if(!mixer_control(&l, &r, 0)) { | |
167 | if(l != volume_left || r != volume_right) { | |
168 | volume_left = l; | |
169 | volume_right = r; | |
170 | snprintf(lb, sizeof lb, "%d", l); | |
171 | snprintf(rb, sizeof rb, "%d", r); | |
172 | eventlog("volume", lb, rb, (char *)0); | |
173 | } | |
174 | } | |
175 | volumecheck_after(60); | |
176 | return 0; | |
177 | } | |
178 | ||
179 | static void volumecheck_after(long offset) { | |
180 | struct timeval w; | |
181 | ||
182 | gettimeofday(&w, 0); | |
183 | w.tv_sec += offset; | |
184 | ev_timeout(ev, 0, &w, volumecheck_again, 0); | |
185 | } | |
186 | ||
e83d0967 RK |
187 | /* We fix the path to include the bindir and sbindir we were installed into */ |
188 | static void fix_path(void) { | |
189 | char *path = getenv("PATH"); | |
e99d42b1 | 190 | static char *newpath; |
191 | /* static or libgc collects it! */ | |
e83d0967 RK |
192 | |
193 | if(!path) | |
194 | error(0, "PATH is not set at all!"); | |
195 | ||
31780899 | 196 | if(*finkbindir && strcmp(finkbindir, "/")) |
e83d0967 RK |
197 | /* We appear to be a finkized mac; include fink on the path in case the |
198 | * tools we need are there. */ | |
199 | byte_xasprintf(&newpath, "PATH=%s:%s:%s:%s", | |
200 | path, bindir, sbindir, finkbindir); | |
201 | else | |
202 | byte_xasprintf(&newpath, "PATH=%s:%s:%s", path, bindir, sbindir); | |
203 | putenv(newpath); | |
204 | info("%s", newpath); | |
205 | } | |
206 | ||
207 | int main(int argc, char **argv) { | |
208 | int n, background = 1, logsyslog = 0; | |
460b9539 | 209 | const char *pidfile = 0; |
210 | int initial_rescan = 1; | |
211 | ||
212 | set_progname(argv); | |
320598d4 | 213 | mem_init(); |
460b9539 | 214 | if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale"); |
215 | /* garbage-collect PCRE's memory */ | |
216 | pcre_malloc = xmalloc; | |
217 | pcre_free = xfree; | |
e83d0967 | 218 | while((n = getopt_long(argc, argv, "hVc:dfP:Ns", options, 0)) >= 0) { |
460b9539 | 219 | switch(n) { |
220 | case 'h': help(); | |
221 | case 'V': version(); | |
222 | case 'c': configfile = optarg; break; | |
223 | case 'd': debugging = 1; break; | |
224 | case 'f': background = 0; break; | |
225 | case 'P': pidfile = optarg; break; | |
226 | case 'N': initial_rescan = 0; break; | |
e83d0967 | 227 | case 's': logsyslog = 1; break; |
18e6d6e6 | 228 | case 'w': wideopen = 1; break; |
460b9539 | 229 | default: fatal(0, "invalid option"); |
230 | } | |
231 | } | |
232 | /* go into background if necessary */ | |
233 | if(background) | |
234 | daemonize(progname, LOG_DAEMON, pidfile); | |
e83d0967 RK |
235 | else if(logsyslog) { |
236 | /* If we're running under some kind of daemon supervisor then we may want | |
237 | * to log to syslog but not to go into background */ | |
238 | openlog(progname, LOG_PID, LOG_DAEMON); | |
239 | log_default = &log_syslog; | |
240 | } | |
460b9539 | 241 | info("process ID %lu", (unsigned long)getpid()); |
e83d0967 | 242 | fix_path(); |
460b9539 | 243 | srand(time(0)); /* don't start the same every time */ |
244 | /* create event loop */ | |
245 | ev = ev_new(); | |
246 | if(ev_child_setup(ev)) fatal(0, "ev_child_setup failed"); | |
247 | /* read config */ | |
c00fce3a | 248 | if(config_read(1)) |
460b9539 | 249 | fatal(0, "cannot read configuration"); |
659d87e8 RK |
250 | /* make sure the home directory exists and has suitable permissions */ |
251 | make_home(); | |
36be7e6a RK |
252 | /* create the default login */ |
253 | make_root_login(); | |
460b9539 | 254 | /* Start the speaker process (as root! - so it can choose its nice value) */ |
255 | speaker_setup(ev); | |
256 | /* set server nice value _after_ starting the speaker, so that they | |
257 | * are independently niceable */ | |
258 | xnice(config->nice_server); | |
259 | /* change user */ | |
260 | become_mortal(); | |
261 | /* make sure we're not root, whatever the config says */ | |
262 | if(getuid() == 0 || geteuid() == 0) fatal(0, "do not run as root"); | |
263 | /* open a lockfile - we only want one copy of the server to run at once. */ | |
264 | if(config->lock) { | |
265 | const char *lockfile; | |
266 | int lockfd; | |
267 | struct flock lock; | |
268 | ||
269 | lockfile = config_get_file("lock"); | |
270 | if((lockfd = open(lockfile, O_RDWR|O_CREAT, 0600)) < 0) | |
271 | fatal(errno, "error opening %s", lockfile); | |
272 | cloexec(lockfd); | |
273 | memset(&lock, 0, sizeof lock); | |
274 | lock.l_type = F_WRLCK; | |
275 | lock.l_whence = SEEK_SET; | |
276 | if(fcntl(lockfd, F_SETLK, &lock) < 0) | |
277 | fatal(errno, "error locking %s", lockfile); | |
278 | } | |
279 | /* initialize database environment */ | |
280 | trackdb_init(TRACKDB_NORMAL_RECOVER); | |
281 | trackdb_master(ev); | |
282 | /* install new config */ | |
283 | reconfigure(ev, 0); | |
284 | /* re-read config if we receive a SIGHUP */ | |
285 | if(ev_signal(ev, SIGHUP, handle_sighup, 0)) fatal(0, "ev_signal failed"); | |
286 | /* exit on SIGINT/SIGTERM */ | |
287 | if(ev_signal(ev, SIGINT, handle_sigint, 0)) fatal(0, "ev_signal failed"); | |
288 | if(ev_signal(ev, SIGTERM, handle_sigterm, 0)) fatal(0, "ev_signal failed"); | |
289 | /* ignore SIGPIPE */ | |
290 | signal(SIGPIPE, SIG_IGN); | |
291 | /* start a rescan straight away */ | |
292 | if(initial_rescan) | |
293 | trackdb_rescan(ev); | |
294 | rescan_after(86400); | |
295 | /* periodically tidy up the database */ | |
296 | dbgc_after(60); | |
297 | /* periodically check the volume */ | |
104ae93a | 298 | volumecheck_again(0, 0, 0); |
460b9539 | 299 | /* set initial state */ |
300 | add_random_track(); | |
301 | play(ev); | |
302 | /* enter the event loop */ | |
303 | n = ev_run(ev); | |
304 | /* if we exit the event loop, something must have gone wrong */ | |
305 | fatal(errno, "ev_run returned %d", n); | |
306 | } | |
307 | ||
308 | /* | |
309 | Local Variables: | |
310 | c-basic-offset:2 | |
311 | comment-column:40 | |
e83d0967 | 312 | fill-column:79 |
460b9539 | 313 | End: |
314 | */ |