2 * Copyright (c) 2022 Omar Polo <op@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <sys/types.h>
18 #include <sys/queue.h>
19 #include <sys/socket.h>
47 struct imsgev *iev_player;
51 struct event ev_sigint;
52 struct event ev_sigterm;
53 struct event ev_siginfo;
67 msgbuf_clear(&iev_player->ibuf.w);
68 close(iev_player->ibuf.fd);
71 log_debug("waiting for children to terminate");
75 if (errno != EINTR && errno != ECHILD)
77 } else if (WIFSIGNALED(status))
78 log_warnx("player terminated; signal %d",
80 } while (pid != -1 || (pid == -1 && errno == EINTR));
82 log_info("terminating");
93 log_info("status: stopped");
96 log_info("status: playing");
99 log_info("status: paused");
102 log_info("status: unknown");
106 if ((cur = playlist_current()) != NULL)
107 log_info("playing %s", cur);
109 log_info("not playing anything");
113 main_sig_handler(int sig, short event, void *arg)
116 * Normal signal handler rules don't apply because libevent
129 fatalx("unexpected signal %d", sig);
134 main_dispatch_player(int sig, short event, void *d)
136 struct imsgev *iev = d;
137 struct imsgbuf *ibuf = &iev->ibuf;
142 if (event & EV_READ) {
143 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
144 fatal("imsg_read error");
145 if (n == 0) /* Connection closed */
148 if (event & EV_WRITE) {
149 if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
150 fatal("msgbuf_write");
151 if (n == 0) /* Connection closed */
156 if ((n = imsg_get(ibuf, &imsg)) == -1)
158 if (n == 0) /* No more messages. */
161 switch (imsg.hdr.type) {
163 playlist_dropcurrent();
166 main_playlist_advance();
170 log_debug("%s: error handling imsg %d", __func__,
180 /* This pipe is dead. Remove its event handler. */
182 event_loopexit(NULL);
187 start_child(enum amused_process proc, int fd)
193 switch (pid = fork()) {
195 fatal("cannot fork");
204 if (dup2(fd, 3) == -1)
205 fatal("cannot setup imsg fd");
206 } else if (fcntl(F_SETFD, 0) == -1)
207 fatal("cannot setup imsg fd");
209 argv[argc++] = argv0;
212 fatal("can not start main process");
214 argv[argc++] = "-Tp";
224 /* obnoxious casts */
225 execvp(argv0, (char *const *)argv);
226 fatal("execvp %s", argv0);
229 /* daemon main routine */
233 int pipe_main2player[2];
236 log_init(debug, LOG_DAEMON);
237 log_setverbose(verbose);
238 log_procinit("main");
243 if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
244 PF_UNSPEC, pipe_main2player) == -1)
247 player_pid = start_child(PROC_PLAYER, pipe_main2player[1]);
251 signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
252 signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
253 signal_set(&ev_siginfo, SIGINFO, main_sig_handler, NULL);
255 signal_add(&ev_sigint, NULL);
256 signal_add(&ev_sigterm, NULL);
257 signal_add(&ev_siginfo, NULL);
259 signal(SIGHUP, SIG_IGN);
260 signal(SIGCHLD, SIG_IGN);
261 signal(SIGPIPE, SIG_IGN);
263 iev_player = xmalloc(sizeof(*iev_player));
264 imsg_init(&iev_player->ibuf, pipe_main2player[0]);
265 iev_player->handler = main_dispatch_player;
266 iev_player->events = EV_READ;
267 event_set(&iev_player->ev, iev_player->ibuf.fd, iev_player->events,
268 iev_player->handler, iev_player);
269 event_add(&iev_player->ev, NULL);
271 if ((control_fd = control_init(csock)) == -1)
272 fatal("control socket setup failed %s", csock);
273 control_listen(control_fd);
275 if (pledge("stdio rpath unix sendfd", NULL) == -1)
284 main(int argc, char **argv)
286 int ch, proc = PROC_MAIN;
288 log_init(1, LOG_DAEMON); /* Log to stderr until daemonized */
295 while ((ch = getopt(argc, argv, "ds:T:vV")) != -1) {
302 csock = xstrdup(optarg);
317 printf("%s version %s\n", getprogname(),
327 if (proc == PROC_PLAYER)
328 exit(player(debug, verbose));
331 xasprintf(&csock, "/tmp/amused-%d", getuid());
341 imsg_event_add(struct imsgev *iev)
343 iev->events = EV_READ;
344 if (iev->ibuf.w.queued)
345 iev->events |= EV_WRITE;
348 event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
349 event_add(&iev->ev, NULL);
353 imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
354 pid_t pid, int fd, const void *data, uint16_t datalen)
358 if ((ret = imsg_compose(&iev->ibuf, type, peerid, pid, fd, data,
366 main_send_player(uint16_t type, int fd, const void *data, uint16_t datalen)
368 return imsg_compose_event(iev_player, type, 0, 0, fd, data, datalen);
372 main_play_song(const char *song)
374 char path[PATH_MAX] = { 0 };
377 strlcpy(path, song, sizeof(path));
378 if ((fd = open(path, O_RDONLY)) == -1) {
379 log_warn("open %s", path);
383 play_state = STATE_PLAYING;
384 imsg_compose_event(iev_player, IMSG_PLAY, 0, 0, fd,
390 main_playlist_advance(void)
395 song = playlist_advance();
399 if (main_play_song(song))
402 playlist_dropcurrent();
407 main_restart_track(void)
411 song = playlist_current();
415 if (main_play_song(song))
418 playlist_dropcurrent();
419 main_playlist_advance();
423 main_enqueue(struct imsgev *iev, struct imsg *imsg)
426 char path[PATH_MAX] = { 0 };
427 const char *err = NULL;
429 datalen = IMSG_DATA_SIZE(*imsg);
430 if (datalen != sizeof(path)) {
431 err = "data size mismatch";
435 memcpy(path, imsg->data, sizeof(path));
436 if (path[datalen-1] != '\0') {
437 err = "malformed data";
441 playlist_enqueue(path);
442 imsg_compose_event(iev, IMSG_CTL_ADD, 0, 0, -1, path, sizeof(path));
445 imsg_compose_event(iev, IMSG_CTL_ERR, 0, 0, -1, err, strlen(err)+1);