2 3baa2617 2022-02-16 op * Copyright (c) 2022 Omar Polo <op@openbsd.org>
4 3baa2617 2022-02-16 op * Permission to use, copy, modify, and distribute this software for any
5 3baa2617 2022-02-16 op * purpose with or without fee is hereby granted, provided that the above
6 3baa2617 2022-02-16 op * copyright notice and this permission notice appear in all copies.
8 3baa2617 2022-02-16 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 3baa2617 2022-02-16 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 3baa2617 2022-02-16 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 3baa2617 2022-02-16 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 3baa2617 2022-02-16 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 3baa2617 2022-02-16 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 3baa2617 2022-02-16 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 3baa2617 2022-02-16 op #include <sys/types.h>
18 3baa2617 2022-02-16 op #include <sys/queue.h>
19 3baa2617 2022-02-16 op #include <sys/socket.h>
20 3baa2617 2022-02-16 op #include <sys/uio.h>
21 3baa2617 2022-02-16 op #include <sys/wait.h>
23 3baa2617 2022-02-16 op #include <event.h>
24 3baa2617 2022-02-16 op #include <errno.h>
25 3baa2617 2022-02-16 op #include <fcntl.h>
26 3baa2617 2022-02-16 op #include <limits.h>
27 3baa2617 2022-02-16 op #include <sndio.h>
28 3baa2617 2022-02-16 op #include <signal.h>
29 3baa2617 2022-02-16 op #include <stdio.h>
30 3baa2617 2022-02-16 op #include <stdlib.h>
31 3baa2617 2022-02-16 op #include <stdint.h>
32 3baa2617 2022-02-16 op #include <string.h>
33 3baa2617 2022-02-16 op #include <syslog.h>
34 3baa2617 2022-02-16 op #include <unistd.h>
35 3baa2617 2022-02-16 op #include <imsg.h>
37 3baa2617 2022-02-16 op #include "amused.h"
38 3baa2617 2022-02-16 op #include "control.h"
39 3baa2617 2022-02-16 op #include "log.h"
40 3baa2617 2022-02-16 op #include "playlist.h"
41 3baa2617 2022-02-16 op #include "xmalloc.h"
43 3baa2617 2022-02-16 op struct sio_hdl *hdl;
44 3baa2617 2022-02-16 op char *csock = NULL;
47 3baa2617 2022-02-16 op struct imsgev *iev_player;
49 3baa2617 2022-02-16 op const char *argv0;
50 3baa2617 2022-02-16 op pid_t player_pid;
51 3baa2617 2022-02-16 op struct event ev_sigint;
52 3baa2617 2022-02-16 op struct event ev_sigterm;
54 3baa2617 2022-02-16 op enum amused_process {
60 3baa2617 2022-02-16 op main_shutdown(void)
65 3baa2617 2022-02-16 op /* close pipes. */
66 3baa2617 2022-02-16 op msgbuf_clear(&iev_player->ibuf.w);
67 3baa2617 2022-02-16 op close(iev_player->ibuf.fd);
68 3baa2617 2022-02-16 op free(iev_player);
70 3baa2617 2022-02-16 op log_debug("waiting for children to terminate");
72 3baa2617 2022-02-16 op pid = wait(&status);
73 3baa2617 2022-02-16 op if (pid == -1) {
74 3baa2617 2022-02-16 op if (errno != EINTR && errno != ECHILD)
75 3baa2617 2022-02-16 op fatal("wait");
76 3baa2617 2022-02-16 op } else if (WIFSIGNALED(status))
77 3baa2617 2022-02-16 op log_warnx("player terminated; signal %d",
78 3baa2617 2022-02-16 op WTERMSIG(status));
79 3baa2617 2022-02-16 op } while (pid != -1 || (pid == -1 && errno == EINTR));
81 3baa2617 2022-02-16 op log_info("terminating");
86 3baa2617 2022-02-16 op main_sig_handler(int sig, short event, void *arg)
89 3baa2617 2022-02-16 op * Normal signal handler rules don't apply because libevent
90 3baa2617 2022-02-16 op * decouples for us.
93 3baa2617 2022-02-16 op switch (sig) {
96 3baa2617 2022-02-16 op main_shutdown();
99 3baa2617 2022-02-16 op fatalx("unexpected signal %d", sig);
104 3baa2617 2022-02-16 op main_dispatch_player(int sig, short event, void *d)
106 3baa2617 2022-02-16 op struct imsgev *iev = d;
107 3baa2617 2022-02-16 op struct imsgbuf *ibuf = &iev->ibuf;
108 3baa2617 2022-02-16 op struct imsg imsg;
110 3baa2617 2022-02-16 op int shut = 0;
112 3baa2617 2022-02-16 op if (event & EV_READ) {
113 3baa2617 2022-02-16 op if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
114 3baa2617 2022-02-16 op fatal("imsg_read error");
115 3baa2617 2022-02-16 op if (n == 0) /* Connection closed */
118 3baa2617 2022-02-16 op if (event & EV_WRITE) {
119 3baa2617 2022-02-16 op if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
120 3baa2617 2022-02-16 op fatal("msgbuf_write");
121 3baa2617 2022-02-16 op if (n == 0) /* Connection closed */
126 3baa2617 2022-02-16 op if ((n = imsg_get(ibuf, &imsg)) == -1)
127 3baa2617 2022-02-16 op fatal("imsg_get");
128 3baa2617 2022-02-16 op if (n == 0) /* No more messages. */
131 3baa2617 2022-02-16 op switch (imsg.hdr.type) {
132 3baa2617 2022-02-16 op case IMSG_ERR:
133 13b83883 2022-02-16 op playlist_dropcurrent();
134 601093db 2022-02-22 op /* fallthrough */
135 aaccc123 2022-02-16 op case IMSG_EOF:
136 f3bd773b 2022-02-19 op if (repeat_one && current_song != NULL)
137 f3bd773b 2022-02-19 op if (main_play_song(current_song))
139 aaccc123 2022-02-16 op main_playlist_advance();
140 87f575c3 2022-02-21 op if (play_state == STATE_PLAYING)
141 87f575c3 2022-02-21 op control_notify(NULL, IMSG_CTL_NEXT);
143 87f575c3 2022-02-21 op control_notify(NULL, IMSG_CTL_STOP);
147 3baa2617 2022-02-16 op log_debug("%s: error handling imsg %d", __func__,
148 3baa2617 2022-02-16 op imsg.hdr.type);
151 3baa2617 2022-02-16 op imsg_free(&imsg);
155 3baa2617 2022-02-16 op imsg_event_add(iev);
157 3baa2617 2022-02-16 op /* This pipe is dead. Remove its event handler. */
158 3baa2617 2022-02-16 op event_del(&iev->ev);
159 3baa2617 2022-02-16 op event_loopexit(NULL);
164 3baa2617 2022-02-16 op start_child(enum amused_process proc, int fd)
166 4c86871a 2022-02-17 op const char *argv[6];
167 3baa2617 2022-02-16 op int argc = 0;
170 3baa2617 2022-02-16 op switch (pid = fork()) {
172 3baa2617 2022-02-16 op fatal("cannot fork");
180 3baa2617 2022-02-16 op if (fd != 3) {
181 fea541a8 2022-02-16 op if (fd != -1 && dup2(fd, 3) == -1)
182 3baa2617 2022-02-16 op fatal("cannot setup imsg fd");
183 3baa2617 2022-02-16 op } else if (fcntl(F_SETFD, 0) == -1)
184 3baa2617 2022-02-16 op fatal("cannot setup imsg fd");
186 3baa2617 2022-02-16 op argv[argc++] = argv0;
188 3baa2617 2022-02-16 op switch (proc) {
189 3baa2617 2022-02-16 op case PROC_MAIN:
190 4c86871a 2022-02-17 op argv[argc++] = "-s";
191 4c86871a 2022-02-17 op argv[argc++] = csock;
193 3baa2617 2022-02-16 op case PROC_PLAYER:
194 3baa2617 2022-02-16 op argv[argc++] = "-Tp";
199 3baa2617 2022-02-16 op argv[argc++] = "-d";
201 3baa2617 2022-02-16 op argv[argc++] = "-v";
202 3baa2617 2022-02-16 op argv[argc++] = NULL;
204 3baa2617 2022-02-16 op /* obnoxious casts */
205 3baa2617 2022-02-16 op execvp(argv0, (char *const *)argv);
206 3baa2617 2022-02-16 op fatal("execvp %s", argv0);
209 3baa2617 2022-02-16 op /* daemon main routine */
210 3baa2617 2022-02-16 op static __dead int
211 3baa2617 2022-02-16 op amused_main(void)
213 3baa2617 2022-02-16 op int pipe_main2player[2];
214 3baa2617 2022-02-16 op int control_fd;
216 3baa2617 2022-02-16 op log_init(debug, LOG_DAEMON);
217 3baa2617 2022-02-16 op log_setverbose(verbose);
218 3baa2617 2022-02-16 op log_procinit("main");
221 3baa2617 2022-02-16 op daemon(1, 0);
223 3baa2617 2022-02-16 op if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
224 3baa2617 2022-02-16 op PF_UNSPEC, pipe_main2player) == -1)
225 3baa2617 2022-02-16 op fatal("socketpair");
227 3baa2617 2022-02-16 op player_pid = start_child(PROC_PLAYER, pipe_main2player[1]);
229 3baa2617 2022-02-16 op event_init();
231 3baa2617 2022-02-16 op signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
232 3baa2617 2022-02-16 op signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
234 3baa2617 2022-02-16 op signal_add(&ev_sigint, NULL);
235 3baa2617 2022-02-16 op signal_add(&ev_sigterm, NULL);
237 3baa2617 2022-02-16 op signal(SIGHUP, SIG_IGN);
238 3baa2617 2022-02-16 op signal(SIGCHLD, SIG_IGN);
239 3baa2617 2022-02-16 op signal(SIGPIPE, SIG_IGN);
241 3baa2617 2022-02-16 op iev_player = xmalloc(sizeof(*iev_player));
242 3baa2617 2022-02-16 op imsg_init(&iev_player->ibuf, pipe_main2player[0]);
243 3baa2617 2022-02-16 op iev_player->handler = main_dispatch_player;
244 3baa2617 2022-02-16 op iev_player->events = EV_READ;
245 3baa2617 2022-02-16 op event_set(&iev_player->ev, iev_player->ibuf.fd, iev_player->events,
246 3baa2617 2022-02-16 op iev_player->handler, iev_player);
247 3baa2617 2022-02-16 op event_add(&iev_player->ev, NULL);
249 3baa2617 2022-02-16 op if ((control_fd = control_init(csock)) == -1)
250 3baa2617 2022-02-16 op fatal("control socket setup failed %s", csock);
251 3baa2617 2022-02-16 op control_listen(control_fd);
253 3baa2617 2022-02-16 op if (pledge("stdio rpath unix sendfd", NULL) == -1)
254 3baa2617 2022-02-16 op fatal("pledge");
256 3baa2617 2022-02-16 op log_info("startup");
257 3baa2617 2022-02-16 op event_dispatch();
258 3baa2617 2022-02-16 op main_shutdown();
262 3baa2617 2022-02-16 op main(int argc, char **argv)
264 3baa2617 2022-02-16 op int ch, proc = PROC_MAIN;
266 3baa2617 2022-02-16 op log_init(1, LOG_DAEMON); /* Log to stderr until daemonized */
267 3baa2617 2022-02-16 op log_setverbose(1);
269 3baa2617 2022-02-16 op argv0 = argv[0];
270 3baa2617 2022-02-16 op if (argv0 == NULL)
271 3baa2617 2022-02-16 op argv0 = "amused";
273 d307e5a2 2022-02-19 op while ((ch = getopt(argc, argv, "ds:T:v")) != -1) {
274 3baa2617 2022-02-16 op switch (ch) {
280 3baa2617 2022-02-16 op csock = xstrdup(optarg);
283 3baa2617 2022-02-16 op switch (*optarg) {
285 3baa2617 2022-02-16 op proc = PROC_PLAYER;
298 3baa2617 2022-02-16 op argv += optind;
299 3baa2617 2022-02-16 op argc -= optind;
301 3baa2617 2022-02-16 op if (proc == PROC_PLAYER)
302 3baa2617 2022-02-16 op exit(player(debug, verbose));
304 3baa2617 2022-02-16 op if (csock == NULL)
305 3baa2617 2022-02-16 op xasprintf(&csock, "/tmp/amused-%d", getuid());
307 3baa2617 2022-02-16 op if (argc == 0)
308 3baa2617 2022-02-16 op amused_main();
310 3baa2617 2022-02-16 op ctl(argc, argv);
315 fea541a8 2022-02-16 op spawn_daemon(void)
318 fea541a8 2022-02-16 op start_child(PROC_MAIN, -1);
322 3baa2617 2022-02-16 op imsg_event_add(struct imsgev *iev)
324 3baa2617 2022-02-16 op iev->events = EV_READ;
325 3baa2617 2022-02-16 op if (iev->ibuf.w.queued)
326 3baa2617 2022-02-16 op iev->events |= EV_WRITE;
328 3baa2617 2022-02-16 op event_del(&iev->ev);
329 3baa2617 2022-02-16 op event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
330 3baa2617 2022-02-16 op event_add(&iev->ev, NULL);
334 3baa2617 2022-02-16 op imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
335 3baa2617 2022-02-16 op pid_t pid, int fd, const void *data, uint16_t datalen)
339 3baa2617 2022-02-16 op if ((ret = imsg_compose(&iev->ibuf, type, peerid, pid, fd, data,
340 3baa2617 2022-02-16 op datalen)) != -1)
341 3baa2617 2022-02-16 op imsg_event_add(iev);
347 06961b72 2022-02-16 op main_send_player(uint16_t type, int fd, const void *data, uint16_t datalen)
349 06961b72 2022-02-16 op return imsg_compose_event(iev_player, type, 0, 0, fd, data, datalen);
353 3baa2617 2022-02-16 op main_play_song(const char *song)
355 3baa2617 2022-02-16 op char path[PATH_MAX] = { 0 };
358 3baa2617 2022-02-16 op strlcpy(path, song, sizeof(path));
359 3baa2617 2022-02-16 op if ((fd = open(path, O_RDONLY)) == -1) {
360 3baa2617 2022-02-16 op log_warn("open %s", path);
364 aaccc123 2022-02-16 op play_state = STATE_PLAYING;
365 3baa2617 2022-02-16 op imsg_compose_event(iev_player, IMSG_PLAY, 0, 0, fd,
366 3baa2617 2022-02-16 op path, sizeof(path));
371 a913de21 2022-02-17 op main_playlist_jump(struct imsgev *iev, struct imsg *imsg)
373 a913de21 2022-02-17 op size_t datalen;
374 a913de21 2022-02-17 op char arg[PATH_MAX];
375 a913de21 2022-02-17 op const char *song;
377 a913de21 2022-02-17 op datalen = IMSG_DATA_SIZE(*imsg);
378 a913de21 2022-02-17 op if (datalen != sizeof(arg)) {
379 a913de21 2022-02-17 op main_senderr(iev, "wrong size");
383 a913de21 2022-02-17 op memcpy(arg, imsg->data, sizeof(arg));
384 a913de21 2022-02-17 op if (arg[sizeof(arg)-1] != '\0') {
385 a913de21 2022-02-17 op main_senderr(iev, "data corrupted");
389 a913de21 2022-02-17 op song = playlist_jump(arg);
390 a913de21 2022-02-17 op if (song == NULL) {
391 a913de21 2022-02-17 op main_senderr(iev, "not found");
395 a913de21 2022-02-17 op main_send_player(IMSG_STOP, -1, NULL, 0);
396 a913de21 2022-02-17 op if (!main_play_song(song)) {
397 a913de21 2022-02-17 op main_senderr(iev, "can't play");
398 a913de21 2022-02-17 op playlist_dropcurrent();
399 a913de21 2022-02-17 op main_playlist_advance();
403 a913de21 2022-02-17 op main_send_status(iev);
407 2f589330 2022-02-17 op main_playlist_resume(void)
409 2f589330 2022-02-17 op const char *song;
411 74c987d5 2022-02-19 op if ((song = current_song) == NULL)
412 2f589330 2022-02-17 op song = playlist_advance();
414 c8777fe4 2022-02-17 op for (; song != NULL; song = playlist_advance()) {
415 2f589330 2022-02-17 op if (main_play_song(song))
418 2f589330 2022-02-17 op playlist_dropcurrent();
423 aaccc123 2022-02-16 op main_playlist_advance(void)
425 aaccc123 2022-02-16 op const char *song;
428 aaccc123 2022-02-16 op song = playlist_advance();
429 aaccc123 2022-02-16 op if (song == NULL)
432 aaccc123 2022-02-16 op if (main_play_song(song))
435 13b83883 2022-02-16 op playlist_dropcurrent();
440 af27e631 2022-02-17 op main_playlist_previous(void)
442 af27e631 2022-02-17 op const char *song;
445 af27e631 2022-02-17 op song = playlist_previous();
446 af27e631 2022-02-17 op if (song == NULL)
449 af27e631 2022-02-17 op if (main_play_song(song))
452 af27e631 2022-02-17 op playlist_dropcurrent();
457 aaccc123 2022-02-16 op main_restart_track(void)
459 aaccc123 2022-02-16 op const char *song;
461 74c987d5 2022-02-19 op song = current_song;
462 aaccc123 2022-02-16 op if (song == NULL)
465 aaccc123 2022-02-16 op if (main_play_song(song))
468 13b83883 2022-02-16 op playlist_dropcurrent();
469 aaccc123 2022-02-16 op main_playlist_advance();
473 19d6b480 2022-02-17 op main_senderr(struct imsgev *iev, const char *msg)
475 19d6b480 2022-02-17 op imsg_compose_event(iev, IMSG_CTL_ERR, 0, 0, -1,
476 19d6b480 2022-02-17 op msg, strlen(msg)+1);
480 19d6b480 2022-02-17 op main_enqueue(int tx, struct playlist *px, struct imsgev *iev,
481 19d6b480 2022-02-17 op struct imsg *imsg)
483 3baa2617 2022-02-16 op size_t datalen;
484 3baa2617 2022-02-16 op char path[PATH_MAX] = { 0 };
485 3baa2617 2022-02-16 op const char *err = NULL;
487 3baa2617 2022-02-16 op datalen = IMSG_DATA_SIZE(*imsg);
488 3baa2617 2022-02-16 op if (datalen != sizeof(path)) {
489 3baa2617 2022-02-16 op err = "data size mismatch";
493 3baa2617 2022-02-16 op memcpy(path, imsg->data, sizeof(path));
494 3baa2617 2022-02-16 op if (path[datalen-1] != '\0') {
495 3baa2617 2022-02-16 op err = "malformed data";
500 19d6b480 2022-02-17 op playlist_push(px, path);
502 19d6b480 2022-02-17 op playlist_enqueue(path);
503 3baa2617 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_ADD, 0, 0, -1, path, sizeof(path));
506 3baa2617 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_ERR, 0, 0, -1, err, strlen(err)+1);
510 d980494c 2022-02-16 op main_send_playlist(struct imsgev *iev)
512 63dd8e70 2022-02-17 op struct player_status s;
515 d980494c 2022-02-16 op for (i = 0; i < playlist.len; ++i) {
516 63dd8e70 2022-02-17 op memset(&s, 0, sizeof(s));
517 63dd8e70 2022-02-17 op strlcpy(s.path, playlist.songs[i], sizeof(s.path));
518 63dd8e70 2022-02-17 op s.status = play_off == i ? STATE_PLAYING : STATE_STOPPED;
519 63dd8e70 2022-02-17 op imsg_compose_event(iev, IMSG_CTL_SHOW, 0, 0, -1, &s,
523 d980494c 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_SHOW, 0, 0, -1, NULL, 0);
527 bb3f279f 2022-02-16 op main_send_status(struct imsgev *iev)
529 bb3f279f 2022-02-16 op struct player_status s;
531 bb3f279f 2022-02-16 op memset(&s, 0, sizeof(s));
533 74c987d5 2022-02-19 op if (current_song != NULL)
534 74c987d5 2022-02-19 op strlcpy(s.path, current_song, sizeof(s.path));
535 bb3f279f 2022-02-16 op s.status = play_state;
536 44398779 2022-02-19 op s.rp.repeat_all = repeat_all;
537 44398779 2022-02-19 op s.rp.repeat_one = repeat_one;
539 bb3f279f 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_STATUS, 0, 0, -1, &s, sizeof(s));