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 = current_song) != 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();
164 main_playlist_advance();
165 if (play_state == STATE_PLAYING)
166 control_notify(NULL, IMSG_CTL_NEXT);
168 control_notify(NULL, IMSG_CTL_STOP);
171 if (repeat_one && current_song != NULL)
172 if (main_play_song(current_song))
174 main_playlist_advance();
175 if (play_state == STATE_PLAYING)
176 control_notify(NULL, IMSG_CTL_NEXT);
178 control_notify(NULL, IMSG_CTL_STOP);
182 log_debug("%s: error handling imsg %d", __func__,
192 /* This pipe is dead. Remove its event handler. */
194 event_loopexit(NULL);
199 start_child(enum amused_process proc, int fd)
205 switch (pid = fork()) {
207 fatal("cannot fork");
216 if (fd != -1 && dup2(fd, 3) == -1)
217 fatal("cannot setup imsg fd");
218 } else if (fcntl(F_SETFD, 0) == -1)
219 fatal("cannot setup imsg fd");
221 argv[argc++] = argv0;
226 argv[argc++] = csock;
229 argv[argc++] = "-Tp";
239 /* obnoxious casts */
240 execvp(argv0, (char *const *)argv);
241 fatal("execvp %s", argv0);
244 /* daemon main routine */
248 int pipe_main2player[2];
251 log_init(debug, LOG_DAEMON);
252 log_setverbose(verbose);
253 log_procinit("main");
258 if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
259 PF_UNSPEC, pipe_main2player) == -1)
262 player_pid = start_child(PROC_PLAYER, pipe_main2player[1]);
266 signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
267 signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
268 signal_set(&ev_siginfo, SIGINFO, main_sig_handler, NULL);
270 signal_add(&ev_sigint, NULL);
271 signal_add(&ev_sigterm, NULL);
272 signal_add(&ev_siginfo, NULL);
274 signal(SIGHUP, SIG_IGN);
275 signal(SIGCHLD, SIG_IGN);
276 signal(SIGPIPE, SIG_IGN);
278 iev_player = xmalloc(sizeof(*iev_player));
279 imsg_init(&iev_player->ibuf, pipe_main2player[0]);
280 iev_player->handler = main_dispatch_player;
281 iev_player->events = EV_READ;
282 event_set(&iev_player->ev, iev_player->ibuf.fd, iev_player->events,
283 iev_player->handler, iev_player);
284 event_add(&iev_player->ev, NULL);
286 if ((control_fd = control_init(csock)) == -1)
287 fatal("control socket setup failed %s", csock);
288 control_listen(control_fd);
290 if (pledge("stdio rpath unix sendfd", NULL) == -1)
299 main(int argc, char **argv)
301 int ch, proc = PROC_MAIN;
303 log_init(1, LOG_DAEMON); /* Log to stderr until daemonized */
310 while ((ch = getopt(argc, argv, "ds:T:v")) != -1) {
317 csock = xstrdup(optarg);
338 if (proc == PROC_PLAYER)
339 exit(player(debug, verbose));
342 xasprintf(&csock, "/tmp/amused-%d", getuid());
355 start_child(PROC_MAIN, -1);
359 imsg_event_add(struct imsgev *iev)
361 iev->events = EV_READ;
362 if (iev->ibuf.w.queued)
363 iev->events |= EV_WRITE;
366 event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
367 event_add(&iev->ev, NULL);
371 imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
372 pid_t pid, int fd, const void *data, uint16_t datalen)
376 if ((ret = imsg_compose(&iev->ibuf, type, peerid, pid, fd, data,
384 main_send_player(uint16_t type, int fd, const void *data, uint16_t datalen)
386 return imsg_compose_event(iev_player, type, 0, 0, fd, data, datalen);
390 main_play_song(const char *song)
392 char path[PATH_MAX] = { 0 };
395 strlcpy(path, song, sizeof(path));
396 if ((fd = open(path, O_RDONLY)) == -1) {
397 log_warn("open %s", path);
401 play_state = STATE_PLAYING;
402 imsg_compose_event(iev_player, IMSG_PLAY, 0, 0, fd,
408 main_playlist_jump(struct imsgev *iev, struct imsg *imsg)
414 datalen = IMSG_DATA_SIZE(*imsg);
415 if (datalen != sizeof(arg)) {
416 main_senderr(iev, "wrong size");
420 memcpy(arg, imsg->data, sizeof(arg));
421 if (arg[sizeof(arg)-1] != '\0') {
422 main_senderr(iev, "data corrupted");
426 song = playlist_jump(arg);
428 main_senderr(iev, "not found");
432 main_send_player(IMSG_STOP, -1, NULL, 0);
433 if (!main_play_song(song)) {
434 main_senderr(iev, "can't play");
435 playlist_dropcurrent();
436 main_playlist_advance();
440 main_send_status(iev);
444 main_playlist_resume(void)
448 if ((song = current_song) == NULL)
449 song = playlist_advance();
451 for (; song != NULL; song = playlist_advance()) {
452 if (main_play_song(song))
455 playlist_dropcurrent();
460 main_playlist_advance(void)
465 song = playlist_advance();
469 if (main_play_song(song))
472 playlist_dropcurrent();
477 main_playlist_previous(void)
482 song = playlist_previous();
486 if (main_play_song(song))
489 playlist_dropcurrent();
494 main_restart_track(void)
502 if (main_play_song(song))
505 playlist_dropcurrent();
506 main_playlist_advance();
510 main_senderr(struct imsgev *iev, const char *msg)
512 imsg_compose_event(iev, IMSG_CTL_ERR, 0, 0, -1,
517 main_enqueue(int tx, struct playlist *px, struct imsgev *iev,
521 char path[PATH_MAX] = { 0 };
522 const char *err = NULL;
524 datalen = IMSG_DATA_SIZE(*imsg);
525 if (datalen != sizeof(path)) {
526 err = "data size mismatch";
530 memcpy(path, imsg->data, sizeof(path));
531 if (path[datalen-1] != '\0') {
532 err = "malformed data";
537 playlist_push(px, path);
539 playlist_enqueue(path);
540 imsg_compose_event(iev, IMSG_CTL_ADD, 0, 0, -1, path, sizeof(path));
543 imsg_compose_event(iev, IMSG_CTL_ERR, 0, 0, -1, err, strlen(err)+1);
547 main_send_playlist(struct imsgev *iev)
549 struct player_status s;
552 for (i = 0; i < playlist.len; ++i) {
553 memset(&s, 0, sizeof(s));
554 strlcpy(s.path, playlist.songs[i], sizeof(s.path));
555 s.status = play_off == i ? STATE_PLAYING : STATE_STOPPED;
556 imsg_compose_event(iev, IMSG_CTL_SHOW, 0, 0, -1, &s,
560 imsg_compose_event(iev, IMSG_CTL_SHOW, 0, 0, -1, NULL, 0);
564 main_send_status(struct imsgev *iev)
566 struct player_status s;
568 memset(&s, 0, sizeof(s));
570 if (current_song != NULL)
571 strlcpy(s.path, current_song, sizeof(s.path));
572 s.status = play_state;
573 s.rp.repeat_all = repeat_all;
574 s.rp.repeat_one = repeat_one;
576 imsg_compose_event(iev, IMSG_CTL_STATUS, 0, 0, -1, &s, sizeof(s));