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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
5aff007d | 3 | * Copyright (C) 2004-2008 Richard Kettlewell |
460b9539 | 4 | * |
e7eb3a27 | 5 | * This program is free software: you can redistribute it and/or modify |
460b9539 | 6 | * it under the terms of the GNU General Public License as published by |
e7eb3a27 | 7 | * the Free Software Foundation, either version 3 of the License, or |
460b9539 | 8 | * (at your option) any later version. |
9 | * | |
e7eb3a27 RK |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
460b9539 | 15 | * You should have received a copy of the GNU General Public License |
e7eb3a27 | 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
460b9539 | 17 | */ |
05b75f8d | 18 | #include "disorder-server.h" |
460b9539 | 19 | |
20 | static ev_source *ev; | |
21 | ||
460b9539 | 22 | static const struct option options[] = { |
23 | { "help", no_argument, 0, 'h' }, | |
24 | { "version", no_argument, 0, 'V' }, | |
25 | { "config", required_argument, 0, 'c' }, | |
26 | { "debug", no_argument, 0, 'd' }, | |
27 | { "foreground", no_argument, 0, 'f' }, | |
28 | { "log", required_argument, 0, 'l' }, | |
29 | { "pidfile", required_argument, 0, 'P' }, | |
18e6d6e6 | 30 | { "wide-open", no_argument, 0, 'w' }, |
e83d0967 | 31 | { "syslog", no_argument, 0, 's' }, |
460b9539 | 32 | { 0, 0, 0, 0 } |
33 | }; | |
34 | ||
35 | /* display usage message and terminate */ | |
36 | static void help(void) { | |
37 | xprintf("Usage:\n" | |
38 | " disorderd [OPTIONS]\n" | |
39 | "Options:\n" | |
40 | " --help, -h Display usage message\n" | |
41 | " --version, -V Display version number\n" | |
42 | " --config PATH, -c PATH Set configuration file\n" | |
43 | " --debug, -d Turn on debugging\n" | |
44 | " --foreground, -f Do not become a daemon\n" | |
e83d0967 | 45 | " --syslog, -s Log to syslog even with -f\n" |
460b9539 | 46 | " --pidfile PATH, -P PATH Leave a pidfile\n"); |
47 | xfclose(stdout); | |
48 | exit(0); | |
49 | } | |
50 | ||
49a773eb RK |
51 | /* signals ------------------------------------------------------------------ */ |
52 | ||
460b9539 | 53 | /* SIGHUP callback */ |
54 | static int handle_sighup(ev_source attribute((unused)) *ev_, | |
55 | int attribute((unused)) sig, | |
56 | void attribute((unused)) *u) { | |
57 | info("received SIGHUP"); | |
58 | reconfigure(ev, 1); | |
59 | return 0; | |
60 | } | |
61 | ||
62 | /* fatal signals */ | |
63 | ||
64 | static int handle_sigint(ev_source attribute((unused)) *ev_, | |
65 | int attribute((unused)) sig, | |
66 | void attribute((unused)) *u) { | |
67 | info("received SIGINT"); | |
68 | quit(ev); | |
69 | } | |
70 | ||
71 | static int handle_sigterm(ev_source attribute((unused)) *ev_, | |
72 | int attribute((unused)) sig, | |
73 | void attribute((unused)) *u) { | |
74 | info("received SIGTERM"); | |
75 | quit(ev); | |
76 | } | |
77 | ||
49a773eb RK |
78 | /* periodic actions --------------------------------------------------------- */ |
79 | ||
80 | struct periodic_data { | |
81 | void (*callback)(ev_source *); | |
82 | int period; | |
83 | }; | |
460b9539 | 84 | |
49a773eb RK |
85 | static int periodic_callback(ev_source *ev_, |
86 | const struct timeval attribute((unused)) *now, | |
87 | void *u) { | |
460b9539 | 88 | struct timeval w; |
49a773eb | 89 | struct periodic_data *const pd = u; |
460b9539 | 90 | |
49a773eb | 91 | pd->callback(ev_); |
460b9539 | 92 | gettimeofday(&w, 0); |
49a773eb RK |
93 | w.tv_sec += pd->period; |
94 | ev_timeout(ev, 0, &w, periodic_callback, pd); | |
460b9539 | 95 | return 0; |
96 | } | |
97 | ||
49a773eb RK |
98 | /** @brief Create a periodic action |
99 | * @param ev Event loop | |
100 | * @param callback Callback function | |
101 | * @param period Interval between calls in seconds | |
102 | * @param immediate If true, call @p callback straight away | |
103 | */ | |
104 | static void create_periodic(ev_source *ev_, | |
105 | void (*callback)(ev_source *), | |
106 | int period, | |
107 | int immediate) { | |
460b9539 | 108 | struct timeval w; |
49a773eb | 109 | struct periodic_data *const pd = xmalloc(sizeof *pd); |
460b9539 | 110 | |
49a773eb RK |
111 | pd->callback = callback; |
112 | pd->period = period; | |
113 | if(immediate) | |
114 | callback(ev_); | |
460b9539 | 115 | gettimeofday(&w, 0); |
49a773eb RK |
116 | w.tv_sec += period; |
117 | ev_timeout(ev_, 0, &w, periodic_callback, pd); | |
460b9539 | 118 | } |
119 | ||
49a773eb | 120 | static void periodic_rescan(ev_source *ev_) { |
dd9af5cb | 121 | trackdb_rescan(ev_, 1/*check*/, 0, 0); |
49a773eb RK |
122 | } |
123 | ||
124 | static void periodic_database_gc(ev_source attribute((unused)) *ev_) { | |
125 | trackdb_gc(); | |
126 | } | |
127 | ||
128 | static void periodic_volume_check(ev_source attribute((unused)) *ev_) { | |
460b9539 | 129 | int l, r; |
130 | char lb[32], rb[32]; | |
131 | ||
3c499fe7 | 132 | if(!mixer_control(-1/*as configured*/, &l, &r, 0)) { |
460b9539 | 133 | if(l != volume_left || r != volume_right) { |
134 | volume_left = l; | |
135 | volume_right = r; | |
136 | snprintf(lb, sizeof lb, "%d", l); | |
137 | snprintf(rb, sizeof rb, "%d", r); | |
138 | eventlog("volume", lb, rb, (char *)0); | |
139 | } | |
140 | } | |
460b9539 | 141 | } |
142 | ||
49a773eb RK |
143 | static void periodic_play_check(ev_source *ev_) { |
144 | play(ev_); | |
145 | } | |
460b9539 | 146 | |
49a773eb RK |
147 | static void periodic_add_random(ev_source *ev_) { |
148 | add_random_track(ev_); | |
460b9539 | 149 | } |
150 | ||
e83d0967 RK |
151 | /* We fix the path to include the bindir and sbindir we were installed into */ |
152 | static void fix_path(void) { | |
153 | char *path = getenv("PATH"); | |
e99d42b1 | 154 | static char *newpath; |
155 | /* static or libgc collects it! */ | |
e83d0967 RK |
156 | |
157 | if(!path) | |
158 | error(0, "PATH is not set at all!"); | |
159 | ||
31780899 | 160 | if(*finkbindir && strcmp(finkbindir, "/")) |
e83d0967 RK |
161 | /* We appear to be a finkized mac; include fink on the path in case the |
162 | * tools we need are there. */ | |
163 | byte_xasprintf(&newpath, "PATH=%s:%s:%s:%s", | |
164 | path, bindir, sbindir, finkbindir); | |
165 | else | |
166 | byte_xasprintf(&newpath, "PATH=%s:%s:%s", path, bindir, sbindir); | |
167 | putenv(newpath); | |
168 | info("%s", newpath); | |
169 | } | |
170 | ||
171 | int main(int argc, char **argv) { | |
172 | int n, background = 1, logsyslog = 0; | |
460b9539 | 173 | const char *pidfile = 0; |
460b9539 | 174 | |
175 | set_progname(argv); | |
320598d4 | 176 | mem_init(); |
460b9539 | 177 | if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale"); |
178 | /* garbage-collect PCRE's memory */ | |
179 | pcre_malloc = xmalloc; | |
180 | pcre_free = xfree; | |
e83d0967 | 181 | while((n = getopt_long(argc, argv, "hVc:dfP:Ns", options, 0)) >= 0) { |
460b9539 | 182 | switch(n) { |
183 | case 'h': help(); | |
3fbdc96d | 184 | case 'V': version("disorderd"); |
460b9539 | 185 | case 'c': configfile = optarg; break; |
186 | case 'd': debugging = 1; break; | |
187 | case 'f': background = 0; break; | |
188 | case 'P': pidfile = optarg; break; | |
e83d0967 | 189 | case 's': logsyslog = 1; break; |
18e6d6e6 | 190 | case 'w': wideopen = 1; break; |
460b9539 | 191 | default: fatal(0, "invalid option"); |
192 | } | |
193 | } | |
194 | /* go into background if necessary */ | |
195 | if(background) | |
196 | daemonize(progname, LOG_DAEMON, pidfile); | |
e83d0967 RK |
197 | else if(logsyslog) { |
198 | /* If we're running under some kind of daemon supervisor then we may want | |
199 | * to log to syslog but not to go into background */ | |
200 | openlog(progname, LOG_PID, LOG_DAEMON); | |
201 | log_default = &log_syslog; | |
202 | } | |
460b9539 | 203 | info("process ID %lu", (unsigned long)getpid()); |
e83d0967 | 204 | fix_path(); |
460b9539 | 205 | srand(time(0)); /* don't start the same every time */ |
b12be54a RK |
206 | /* gcrypt initialization */ |
207 | gcry_control(GCRYCTL_INIT_SECMEM, 1); | |
460b9539 | 208 | /* create event loop */ |
209 | ev = ev_new(); | |
210 | if(ev_child_setup(ev)) fatal(0, "ev_child_setup failed"); | |
211 | /* read config */ | |
c00fce3a | 212 | if(config_read(1)) |
460b9539 | 213 | fatal(0, "cannot read configuration"); |
659d87e8 RK |
214 | /* make sure the home directory exists and has suitable permissions */ |
215 | make_home(); | |
460b9539 | 216 | /* Start the speaker process (as root! - so it can choose its nice value) */ |
217 | speaker_setup(ev); | |
218 | /* set server nice value _after_ starting the speaker, so that they | |
219 | * are independently niceable */ | |
220 | xnice(config->nice_server); | |
221 | /* change user */ | |
222 | become_mortal(); | |
223 | /* make sure we're not root, whatever the config says */ | |
224 | if(getuid() == 0 || geteuid() == 0) fatal(0, "do not run as root"); | |
225 | /* open a lockfile - we only want one copy of the server to run at once. */ | |
226 | if(config->lock) { | |
227 | const char *lockfile; | |
228 | int lockfd; | |
9ba0617a RK |
229 | struct flock lock; |
230 | ||
460b9539 | 231 | lockfile = config_get_file("lock"); |
232 | if((lockfd = open(lockfile, O_RDWR|O_CREAT, 0600)) < 0) | |
233 | fatal(errno, "error opening %s", lockfile); | |
234 | cloexec(lockfd); | |
235 | memset(&lock, 0, sizeof lock); | |
236 | lock.l_type = F_WRLCK; | |
237 | lock.l_whence = SEEK_SET; | |
238 | if(fcntl(lockfd, F_SETLK, &lock) < 0) | |
239 | fatal(errno, "error locking %s", lockfile); | |
240 | } | |
241 | /* initialize database environment */ | |
a745dd43 | 242 | trackdb_init(TRACKDB_NORMAL_RECOVER|TRACKDB_MAY_CREATE); |
460b9539 | 243 | trackdb_master(ev); |
f0feb22e | 244 | /* install new config (calls trackdb_open()) */ |
460b9539 | 245 | reconfigure(ev, 0); |
f0feb22e RK |
246 | /* pull in old users */ |
247 | trackdb_old_users(); | |
248 | /* create a root login */ | |
249 | trackdb_create_root(); | |
460b9539 | 250 | /* re-read config if we receive a SIGHUP */ |
251 | if(ev_signal(ev, SIGHUP, handle_sighup, 0)) fatal(0, "ev_signal failed"); | |
252 | /* exit on SIGINT/SIGTERM */ | |
253 | if(ev_signal(ev, SIGINT, handle_sigint, 0)) fatal(0, "ev_signal failed"); | |
254 | if(ev_signal(ev, SIGTERM, handle_sigterm, 0)) fatal(0, "ev_signal failed"); | |
255 | /* ignore SIGPIPE */ | |
256 | signal(SIGPIPE, SIG_IGN); | |
49a773eb RK |
257 | /* Rescan immediately and then daily */ |
258 | create_periodic(ev, periodic_rescan, 86400, 1/*immediate*/); | |
259 | /* Tidy up the database once a minute */ | |
260 | create_periodic(ev, periodic_database_gc, 60, 0); | |
261 | /* Check the volume immediately and then once a minute */ | |
262 | create_periodic(ev, periodic_volume_check, 60, 1); | |
263 | /* Check for a playable track once a second */ | |
264 | create_periodic(ev, periodic_play_check, 1, 0); | |
1ef295b3 RK |
265 | /* Try adding a random track immediately and once every two seconds */ |
266 | create_periodic(ev, periodic_add_random, 2, 1); | |
460b9539 | 267 | /* enter the event loop */ |
268 | n = ev_run(ev); | |
269 | /* if we exit the event loop, something must have gone wrong */ | |
270 | fatal(errno, "ev_run returned %d", n); | |
271 | } | |
272 | ||
273 | /* | |
274 | Local Variables: | |
275 | c-basic-offset:2 | |
276 | comment-column:40 | |
e83d0967 | 277 | fill-column:79 |
460b9539 | 278 | End: |
279 | */ |