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 dfe2ad96 2022-02-24 op #include <sys/stat.h>
21 3baa2617 2022-02-16 op #include <sys/uio.h>
22 3baa2617 2022-02-16 op #include <sys/wait.h>
24 3baa2617 2022-02-16 op #include <event.h>
25 3baa2617 2022-02-16 op #include <errno.h>
26 3baa2617 2022-02-16 op #include <fcntl.h>
27 3baa2617 2022-02-16 op #include <limits.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 char *csock = NULL;
46 3baa2617 2022-02-16 op struct imsgev *iev_player;
48 3baa2617 2022-02-16 op const char *argv0;
49 3baa2617 2022-02-16 op pid_t player_pid;
50 3baa2617 2022-02-16 op struct event ev_sigint;
51 3baa2617 2022-02-16 op struct event ev_sigterm;
53 3baa2617 2022-02-16 op enum amused_process {
59 3baa2617 2022-02-16 op main_shutdown(void)
64 3baa2617 2022-02-16 op /* close pipes. */
65 3baa2617 2022-02-16 op msgbuf_clear(&iev_player->ibuf.w);
66 3baa2617 2022-02-16 op close(iev_player->ibuf.fd);
67 3baa2617 2022-02-16 op free(iev_player);
69 3baa2617 2022-02-16 op log_debug("waiting for children to terminate");
71 3baa2617 2022-02-16 op pid = wait(&status);
72 3baa2617 2022-02-16 op if (pid == -1) {
73 3baa2617 2022-02-16 op if (errno != EINTR && errno != ECHILD)
74 3baa2617 2022-02-16 op fatal("wait");
75 3baa2617 2022-02-16 op } else if (WIFSIGNALED(status))
76 3baa2617 2022-02-16 op log_warnx("player terminated; signal %d",
77 3baa2617 2022-02-16 op WTERMSIG(status));
78 3baa2617 2022-02-16 op } while (pid != -1 || (pid == -1 && errno == EINTR));
80 3baa2617 2022-02-16 op log_info("terminating");
85 3baa2617 2022-02-16 op main_sig_handler(int sig, short event, void *arg)
88 3baa2617 2022-02-16 op * Normal signal handler rules don't apply because libevent
89 3baa2617 2022-02-16 op * decouples for us.
92 3baa2617 2022-02-16 op switch (sig) {
95 3baa2617 2022-02-16 op main_shutdown();
98 3baa2617 2022-02-16 op fatalx("unexpected signal %d", sig);
103 3baa2617 2022-02-16 op main_dispatch_player(int sig, short event, void *d)
105 3baa2617 2022-02-16 op struct imsgev *iev = d;
106 3baa2617 2022-02-16 op struct imsgbuf *ibuf = &iev->ibuf;
107 3baa2617 2022-02-16 op struct imsg imsg;
109 3baa2617 2022-02-16 op int shut = 0;
111 3baa2617 2022-02-16 op if (event & EV_READ) {
112 3baa2617 2022-02-16 op if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
113 3baa2617 2022-02-16 op fatal("imsg_read error");
114 3baa2617 2022-02-16 op if (n == 0) /* Connection closed */
117 3baa2617 2022-02-16 op if (event & EV_WRITE) {
118 3baa2617 2022-02-16 op if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
119 3baa2617 2022-02-16 op fatal("msgbuf_write");
120 3baa2617 2022-02-16 op if (n == 0) /* Connection closed */
125 3baa2617 2022-02-16 op if ((n = imsg_get(ibuf, &imsg)) == -1)
126 3baa2617 2022-02-16 op fatal("imsg_get");
127 3baa2617 2022-02-16 op if (n == 0) /* No more messages. */
130 3baa2617 2022-02-16 op switch (imsg.hdr.type) {
131 3baa2617 2022-02-16 op case IMSG_ERR:
132 a975dca9 2022-05-10 op log_warnx("failed to play, skipping %s", current_song);
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 0be6c0b1 2022-02-22 op if (repeat_one && current_song != NULL) {
137 f3bd773b 2022-02-19 op if (main_play_song(current_song))
139 0be6c0b1 2022-02-22 op playlist_dropcurrent();
141 aaccc123 2022-02-16 op main_playlist_advance();
142 87f575c3 2022-02-21 op if (play_state == STATE_PLAYING)
143 87f575c3 2022-02-21 op control_notify(NULL, IMSG_CTL_NEXT);
145 87f575c3 2022-02-21 op control_notify(NULL, IMSG_CTL_STOP);
148 3baa2617 2022-02-16 op log_debug("%s: error handling imsg %d", __func__,
149 3baa2617 2022-02-16 op imsg.hdr.type);
152 3baa2617 2022-02-16 op imsg_free(&imsg);
156 3baa2617 2022-02-16 op imsg_event_add(iev);
158 3baa2617 2022-02-16 op /* This pipe is dead. Remove its event handler. */
159 3baa2617 2022-02-16 op event_del(&iev->ev);
160 3baa2617 2022-02-16 op event_loopexit(NULL);
165 3baa2617 2022-02-16 op start_child(enum amused_process proc, int fd)
167 1d673950 2022-03-03 op const char *argv[7];
168 3baa2617 2022-02-16 op int argc = 0;
171 1d673950 2022-03-03 op if (fd == -1 && debug)
174 3baa2617 2022-02-16 op switch (pid = fork()) {
176 3baa2617 2022-02-16 op fatal("cannot fork");
184 3baa2617 2022-02-16 op if (fd != 3) {
185 fea541a8 2022-02-16 op if (fd != -1 && dup2(fd, 3) == -1)
186 3baa2617 2022-02-16 op fatal("cannot setup imsg fd");
187 3baa2617 2022-02-16 op } else if (fcntl(F_SETFD, 0) == -1)
188 3baa2617 2022-02-16 op fatal("cannot setup imsg fd");
191 3baa2617 2022-02-16 op argv[argc++] = argv0;
193 3baa2617 2022-02-16 op switch (proc) {
194 3baa2617 2022-02-16 op case PROC_MAIN:
195 4c86871a 2022-02-17 op argv[argc++] = "-s";
196 4c86871a 2022-02-17 op argv[argc++] = csock;
197 1d673950 2022-03-03 op argv[argc++] = "-Tm";
199 3baa2617 2022-02-16 op case PROC_PLAYER:
200 3baa2617 2022-02-16 op argv[argc++] = "-Tp";
205 3baa2617 2022-02-16 op argv[argc++] = "-d";
207 3baa2617 2022-02-16 op argv[argc++] = "-v";
208 3baa2617 2022-02-16 op argv[argc++] = NULL;
210 3baa2617 2022-02-16 op /* obnoxious casts */
211 3baa2617 2022-02-16 op execvp(argv0, (char *const *)argv);
212 3baa2617 2022-02-16 op fatal("execvp %s", argv0);
215 3baa2617 2022-02-16 op /* daemon main routine */
216 6a1b899f 2022-03-10 op static __dead void
217 3baa2617 2022-02-16 op amused_main(void)
219 3baa2617 2022-02-16 op int pipe_main2player[2];
220 3baa2617 2022-02-16 op int control_fd;
222 3baa2617 2022-02-16 op log_init(debug, LOG_DAEMON);
223 3baa2617 2022-02-16 op log_setverbose(verbose);
224 3baa2617 2022-02-16 op log_procinit("main");
227 3baa2617 2022-02-16 op daemon(1, 0);
229 3baa2617 2022-02-16 op if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
230 3baa2617 2022-02-16 op PF_UNSPEC, pipe_main2player) == -1)
231 3baa2617 2022-02-16 op fatal("socketpair");
233 3baa2617 2022-02-16 op player_pid = start_child(PROC_PLAYER, pipe_main2player[1]);
235 3baa2617 2022-02-16 op event_init();
237 3baa2617 2022-02-16 op signal_set(&ev_sigint, SIGINT, main_sig_handler, NULL);
238 3baa2617 2022-02-16 op signal_set(&ev_sigterm, SIGTERM, main_sig_handler, NULL);
240 3baa2617 2022-02-16 op signal_add(&ev_sigint, NULL);
241 3baa2617 2022-02-16 op signal_add(&ev_sigterm, NULL);
243 3baa2617 2022-02-16 op signal(SIGHUP, SIG_IGN);
244 3baa2617 2022-02-16 op signal(SIGCHLD, SIG_IGN);
245 3baa2617 2022-02-16 op signal(SIGPIPE, SIG_IGN);
247 3baa2617 2022-02-16 op iev_player = xmalloc(sizeof(*iev_player));
248 3baa2617 2022-02-16 op imsg_init(&iev_player->ibuf, pipe_main2player[0]);
249 3baa2617 2022-02-16 op iev_player->handler = main_dispatch_player;
250 3baa2617 2022-02-16 op iev_player->events = EV_READ;
251 3baa2617 2022-02-16 op event_set(&iev_player->ev, iev_player->ibuf.fd, iev_player->events,
252 3baa2617 2022-02-16 op iev_player->handler, iev_player);
253 3baa2617 2022-02-16 op event_add(&iev_player->ev, NULL);
255 3baa2617 2022-02-16 op if ((control_fd = control_init(csock)) == -1)
256 3baa2617 2022-02-16 op fatal("control socket setup failed %s", csock);
257 3baa2617 2022-02-16 op control_listen(control_fd);
259 3baa2617 2022-02-16 op if (pledge("stdio rpath unix sendfd", NULL) == -1)
260 3baa2617 2022-02-16 op fatal("pledge");
262 3baa2617 2022-02-16 op log_info("startup");
263 3baa2617 2022-02-16 op event_dispatch();
264 3baa2617 2022-02-16 op main_shutdown();
268 3baa2617 2022-02-16 op main(int argc, char **argv)
270 1d673950 2022-03-03 op int ch, proc = -1;
272 3baa2617 2022-02-16 op log_init(1, LOG_DAEMON); /* Log to stderr until daemonized */
273 3baa2617 2022-02-16 op log_setverbose(1);
275 3baa2617 2022-02-16 op argv0 = argv[0];
276 3baa2617 2022-02-16 op if (argv0 == NULL)
277 3baa2617 2022-02-16 op argv0 = "amused";
279 d307e5a2 2022-02-19 op while ((ch = getopt(argc, argv, "ds:T:v")) != -1) {
280 3baa2617 2022-02-16 op switch (ch) {
286 3baa2617 2022-02-16 op csock = xstrdup(optarg);
289 3baa2617 2022-02-16 op switch (*optarg) {
291 1d673950 2022-03-03 op proc = PROC_MAIN;
294 3baa2617 2022-02-16 op proc = PROC_PLAYER;
307 3baa2617 2022-02-16 op argv += optind;
308 3baa2617 2022-02-16 op argc -= optind;
310 1d673950 2022-03-03 op if (proc == PROC_MAIN)
311 1d673950 2022-03-03 op amused_main();
312 3baa2617 2022-02-16 op if (proc == PROC_PLAYER)
313 3baa2617 2022-02-16 op exit(player(debug, verbose));
315 3baa2617 2022-02-16 op if (csock == NULL)
316 3baa2617 2022-02-16 op xasprintf(&csock, "/tmp/amused-%d", getuid());
318 1d673950 2022-03-03 op if (argc > 0)
321 1d673950 2022-03-03 op ctl(argc, argv);
325 fea541a8 2022-02-16 op spawn_daemon(void)
327 fea541a8 2022-02-16 op start_child(PROC_MAIN, -1);
331 3baa2617 2022-02-16 op imsg_event_add(struct imsgev *iev)
333 3baa2617 2022-02-16 op iev->events = EV_READ;
334 3baa2617 2022-02-16 op if (iev->ibuf.w.queued)
335 3baa2617 2022-02-16 op iev->events |= EV_WRITE;
337 3baa2617 2022-02-16 op event_del(&iev->ev);
338 3baa2617 2022-02-16 op event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
339 3baa2617 2022-02-16 op event_add(&iev->ev, NULL);
343 3baa2617 2022-02-16 op imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
344 3baa2617 2022-02-16 op pid_t pid, int fd, const void *data, uint16_t datalen)
348 3baa2617 2022-02-16 op if ((ret = imsg_compose(&iev->ibuf, type, peerid, pid, fd, data,
349 3baa2617 2022-02-16 op datalen)) != -1)
350 3baa2617 2022-02-16 op imsg_event_add(iev);
356 5d86bc14 2022-05-10 op main_send_player(uint16_t type, int fd)
358 5d86bc14 2022-05-10 op return imsg_compose_event(iev_player, type, 0, 0, fd, NULL, 0);
362 a975dca9 2022-05-10 op main_play_song(const char *path)
364 dfe2ad96 2022-02-24 op struct stat sb;
367 3baa2617 2022-02-16 op if ((fd = open(path, O_RDONLY)) == -1) {
368 3baa2617 2022-02-16 op log_warn("open %s", path);
372 dfe2ad96 2022-02-24 op if (fstat(fd, &sb) == -1) {
373 dfe2ad96 2022-02-24 op log_warn("failed to stat %s", path);
378 dfe2ad96 2022-02-24 op if (S_ISDIR(sb.st_mode)) {
379 dfe2ad96 2022-02-24 op log_info("skipping a directory: %s", path);
384 aaccc123 2022-02-16 op play_state = STATE_PLAYING;
385 5d86bc14 2022-05-10 op main_send_player(IMSG_PLAY, fd);
390 a913de21 2022-02-17 op main_playlist_jump(struct imsgev *iev, struct imsg *imsg)
392 a913de21 2022-02-17 op size_t datalen;
393 a913de21 2022-02-17 op char arg[PATH_MAX];
394 a913de21 2022-02-17 op const char *song;
396 a913de21 2022-02-17 op datalen = IMSG_DATA_SIZE(*imsg);
397 a913de21 2022-02-17 op if (datalen != sizeof(arg)) {
398 a913de21 2022-02-17 op main_senderr(iev, "wrong size");
402 a913de21 2022-02-17 op memcpy(arg, imsg->data, sizeof(arg));
403 a913de21 2022-02-17 op if (arg[sizeof(arg)-1] != '\0') {
404 a913de21 2022-02-17 op main_senderr(iev, "data corrupted");
408 a913de21 2022-02-17 op song = playlist_jump(arg);
409 a913de21 2022-02-17 op if (song == NULL) {
410 a913de21 2022-02-17 op main_senderr(iev, "not found");
414 5d86bc14 2022-05-10 op main_send_player(IMSG_STOP, -1);
415 a913de21 2022-02-17 op if (!main_play_song(song)) {
416 a913de21 2022-02-17 op main_senderr(iev, "can't play");
417 a913de21 2022-02-17 op playlist_dropcurrent();
418 a913de21 2022-02-17 op main_playlist_advance();
422 a913de21 2022-02-17 op main_send_status(iev);
426 2f589330 2022-02-17 op main_playlist_resume(void)
428 2f589330 2022-02-17 op const char *song;
430 74c987d5 2022-02-19 op if ((song = current_song) == NULL)
431 2f589330 2022-02-17 op song = playlist_advance();
433 c8777fe4 2022-02-17 op for (; song != NULL; song = playlist_advance()) {
434 2f589330 2022-02-17 op if (main_play_song(song))
437 2f589330 2022-02-17 op playlist_dropcurrent();
442 aaccc123 2022-02-16 op main_playlist_advance(void)
444 aaccc123 2022-02-16 op const char *song;
447 aaccc123 2022-02-16 op song = playlist_advance();
448 aaccc123 2022-02-16 op if (song == NULL)
451 aaccc123 2022-02-16 op if (main_play_song(song))
454 13b83883 2022-02-16 op playlist_dropcurrent();
459 af27e631 2022-02-17 op main_playlist_previous(void)
461 af27e631 2022-02-17 op const char *song;
464 af27e631 2022-02-17 op song = playlist_previous();
465 af27e631 2022-02-17 op if (song == NULL)
468 af27e631 2022-02-17 op if (main_play_song(song))
471 af27e631 2022-02-17 op playlist_dropcurrent();
476 aaccc123 2022-02-16 op main_restart_track(void)
478 aaccc123 2022-02-16 op const char *song;
480 74c987d5 2022-02-19 op song = current_song;
481 aaccc123 2022-02-16 op if (song == NULL)
484 aaccc123 2022-02-16 op if (main_play_song(song))
487 13b83883 2022-02-16 op playlist_dropcurrent();
488 aaccc123 2022-02-16 op main_playlist_advance();
492 19d6b480 2022-02-17 op main_senderr(struct imsgev *iev, const char *msg)
494 19d6b480 2022-02-17 op imsg_compose_event(iev, IMSG_CTL_ERR, 0, 0, -1,
495 19d6b480 2022-02-17 op msg, strlen(msg)+1);
499 19d6b480 2022-02-17 op main_enqueue(int tx, struct playlist *px, struct imsgev *iev,
500 19d6b480 2022-02-17 op struct imsg *imsg)
502 3baa2617 2022-02-16 op size_t datalen;
503 e06ad444 2022-06-09 op char path[PATH_MAX];
504 3baa2617 2022-02-16 op const char *err = NULL;
506 3baa2617 2022-02-16 op datalen = IMSG_DATA_SIZE(*imsg);
507 3baa2617 2022-02-16 op if (datalen != sizeof(path)) {
508 3baa2617 2022-02-16 op err = "data size mismatch";
512 3baa2617 2022-02-16 op memcpy(path, imsg->data, sizeof(path));
513 3baa2617 2022-02-16 op if (path[datalen-1] != '\0') {
514 3baa2617 2022-02-16 op err = "malformed data";
519 19d6b480 2022-02-17 op playlist_push(px, path);
521 19d6b480 2022-02-17 op playlist_enqueue(path);
522 3baa2617 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_ADD, 0, 0, -1, path, sizeof(path));
525 0f5568cb 2022-03-02 op main_senderr(iev, err);
529 d980494c 2022-02-16 op main_send_playlist(struct imsgev *iev)
531 63dd8e70 2022-02-17 op struct player_status s;
534 d980494c 2022-02-16 op for (i = 0; i < playlist.len; ++i) {
535 63dd8e70 2022-02-17 op memset(&s, 0, sizeof(s));
536 63dd8e70 2022-02-17 op strlcpy(s.path, playlist.songs[i], sizeof(s.path));
537 63dd8e70 2022-02-17 op s.status = play_off == i ? STATE_PLAYING : STATE_STOPPED;
538 63dd8e70 2022-02-17 op imsg_compose_event(iev, IMSG_CTL_SHOW, 0, 0, -1, &s,
542 d980494c 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_SHOW, 0, 0, -1, NULL, 0);
546 bb3f279f 2022-02-16 op main_send_status(struct imsgev *iev)
548 bb3f279f 2022-02-16 op struct player_status s;
550 bb3f279f 2022-02-16 op memset(&s, 0, sizeof(s));
552 74c987d5 2022-02-19 op if (current_song != NULL)
553 74c987d5 2022-02-19 op strlcpy(s.path, current_song, sizeof(s.path));
554 bb3f279f 2022-02-16 op s.status = play_state;
555 44398779 2022-02-19 op s.rp.repeat_all = repeat_all;
556 44398779 2022-02-19 op s.rp.repeat_one = repeat_one;
558 bb3f279f 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_STATUS, 0, 0, -1, &s, sizeof(s));