2 e3317c86 2023-05-02 op * Copyright (c) 2022 Omar Polo <op@omarpolo.com>
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 f36fd90a 2022-07-09 op #include "config.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/wait.h>
23 3baa2617 2022-02-16 op #include <errno.h>
24 3baa2617 2022-02-16 op #include <fcntl.h>
25 3baa2617 2022-02-16 op #include <limits.h>
26 3baa2617 2022-02-16 op #include <signal.h>
27 3baa2617 2022-02-16 op #include <stdio.h>
28 3baa2617 2022-02-16 op #include <stdlib.h>
29 3baa2617 2022-02-16 op #include <stdint.h>
30 3baa2617 2022-02-16 op #include <string.h>
31 3baa2617 2022-02-16 op #include <syslog.h>
32 3baa2617 2022-02-16 op #include <unistd.h>
34 3baa2617 2022-02-16 op #include "amused.h"
35 3baa2617 2022-02-16 op #include "control.h"
36 0a53bd62 2023-08-16 op #include "ev.h"
37 3baa2617 2022-02-16 op #include "log.h"
38 3baa2617 2022-02-16 op #include "playlist.h"
39 3baa2617 2022-02-16 op #include "xmalloc.h"
41 3baa2617 2022-02-16 op char *csock = NULL;
44 3baa2617 2022-02-16 op struct imsgev *iev_player;
46 3baa2617 2022-02-16 op const char *argv0;
47 3baa2617 2022-02-16 op pid_t player_pid;
49 3baa2617 2022-02-16 op enum amused_process {
54 ae335651 2022-07-08 op static __dead void
55 3baa2617 2022-02-16 op main_shutdown(void)
60 3baa2617 2022-02-16 op /* close pipes. */
61 50e0da0e 2024-01-21 op msgbuf_clear(&iev_player->imsgbuf.w);
62 50e0da0e 2024-01-21 op close(iev_player->imsgbuf.fd);
63 3baa2617 2022-02-16 op free(iev_player);
65 3baa2617 2022-02-16 op log_debug("waiting for children to terminate");
67 3baa2617 2022-02-16 op pid = wait(&status);
68 3baa2617 2022-02-16 op if (pid == -1) {
69 3baa2617 2022-02-16 op if (errno != EINTR && errno != ECHILD)
70 3baa2617 2022-02-16 op fatal("wait");
71 3baa2617 2022-02-16 op } else if (WIFSIGNALED(status))
72 3baa2617 2022-02-16 op log_warnx("player terminated; signal %d",
73 3baa2617 2022-02-16 op WTERMSIG(status));
74 3baa2617 2022-02-16 op } while (pid != -1 || (pid == -1 && errno == EINTR));
76 3baa2617 2022-02-16 op log_info("terminating");
81 0a53bd62 2023-08-16 op main_sig_handler(int sig, int event, void *arg)
84 0a53bd62 2023-08-16 op * Normal signal handler rules don't apply because ev.c
85 3baa2617 2022-02-16 op * decouples for us.
88 3baa2617 2022-02-16 op switch (sig) {
91 3baa2617 2022-02-16 op main_shutdown();
94 3baa2617 2022-02-16 op fatalx("unexpected signal %d", sig);
99 0a53bd62 2023-08-16 op main_dispatch_player(int sig, int event, void *d)
101 17ef54d6 2022-06-22 op char *errstr;
102 3baa2617 2022-02-16 op struct imsgev *iev = d;
103 50e0da0e 2024-01-21 op struct imsgbuf *imsgbuf = &iev->imsgbuf;
104 3baa2617 2022-02-16 op struct imsg imsg;
105 9307af9e 2024-01-21 op struct ibuf ibuf;
106 17ef54d6 2022-06-22 op size_t datalen;
108 3baa2617 2022-02-16 op int shut = 0;
110 6be81433 2024-04-14 op if (event & EV_READ) {
111 50e0da0e 2024-01-21 op if ((n = imsg_read(imsgbuf)) == -1 && errno != EAGAIN)
112 3baa2617 2022-02-16 op fatal("imsg_read error");
113 3baa2617 2022-02-16 op if (n == 0) /* Connection closed */
116 6be81433 2024-04-14 op if (event & EV_WRITE) {
117 50e0da0e 2024-01-21 op if ((n = msgbuf_write(&imsgbuf->w)) == -1 && errno != EAGAIN)
118 3baa2617 2022-02-16 op fatal("msgbuf_write");
119 3baa2617 2022-02-16 op if (n == 0) /* Connection closed */
124 50e0da0e 2024-01-21 op if ((n = imsg_get(imsgbuf, &imsg)) == -1)
125 3baa2617 2022-02-16 op fatal("imsg_get");
126 3baa2617 2022-02-16 op if (n == 0) /* No more messages. */
129 ddaffed6 2024-01-21 op switch (imsg_get_type(&imsg)) {
130 ff06024f 2022-07-08 op case IMSG_POS:
131 9307af9e 2024-01-21 op if (imsg_get_data(&imsg, ¤t_position,
132 9307af9e 2024-01-21 op sizeof(current_position)) == -1)
133 9307af9e 2024-01-21 op fatalx("IMSG_POS: got wrong size");
134 ff06024f 2022-07-08 op if (current_position < 0)
135 ff06024f 2022-07-08 op current_position = -1;
136 93cde5d1 2023-01-09 op control_notify(IMSG_CTL_SEEK);
138 ff06024f 2022-07-08 op case IMSG_LEN:
139 9307af9e 2024-01-21 op if (imsg_get_data(&imsg, ¤t_duration,
140 9307af9e 2024-01-21 op sizeof(current_duration)) == -1)
141 9307af9e 2024-01-21 op fatalx("IMSG_LEN: got wrong size");
142 ff06024f 2022-07-08 op if (current_duration < 0)
143 ff06024f 2022-07-08 op current_duration = -1;
145 3baa2617 2022-02-16 op case IMSG_ERR:
146 9307af9e 2024-01-21 op if (imsg_get_ibuf(&imsg, &ibuf) == -1 ||
147 9307af9e 2024-01-21 op (datalen = ibuf_size(&ibuf)) == 0)
148 17ef54d6 2022-06-22 op errstr = "unknown error";
150 9307af9e 2024-01-21 op errstr = ibuf_data(&ibuf);
151 17ef54d6 2022-06-22 op errstr[datalen-1] = '\0';
153 17ef54d6 2022-06-22 op log_warnx("%s; skipping %s", errstr, current_song);
154 13b83883 2022-02-16 op playlist_dropcurrent();
155 9fb94242 2022-07-13 op main_playlist_advance();
156 9fb94242 2022-07-13 op if (play_state == STATE_PLAYING)
157 9fb94242 2022-07-13 op control_notify(IMSG_CTL_NEXT);
159 9fb94242 2022-07-13 op control_notify(IMSG_CTL_STOP);
161 aaccc123 2022-02-16 op case IMSG_EOF:
162 9fb94242 2022-07-13 op if (repeat_one && main_play_song(current_song))
164 9fb94242 2022-07-13 op else if (repeat_one || consume)
165 0be6c0b1 2022-02-22 op playlist_dropcurrent();
166 aaccc123 2022-02-16 op main_playlist_advance();
167 87f575c3 2022-02-21 op if (play_state == STATE_PLAYING)
168 949b5c2e 2022-07-12 op control_notify(IMSG_CTL_NEXT);
170 949b5c2e 2022-07-12 op control_notify(IMSG_CTL_STOP);
173 3baa2617 2022-02-16 op log_debug("%s: error handling imsg %d", __func__,
174 ddaffed6 2024-01-21 op imsg_get_type(&imsg));
177 3baa2617 2022-02-16 op imsg_free(&imsg);
183 3baa2617 2022-02-16 op imsg_event_add(iev);
187 3baa2617 2022-02-16 op start_child(enum amused_process proc, int fd)
189 1d673950 2022-03-03 op const char *argv[7];
190 3baa2617 2022-02-16 op int argc = 0;
193 1d673950 2022-03-03 op if (fd == -1 && debug)
196 3baa2617 2022-02-16 op switch (pid = fork()) {
198 3baa2617 2022-02-16 op fatal("cannot fork");
206 3baa2617 2022-02-16 op if (fd != 3) {
207 fea541a8 2022-02-16 op if (fd != -1 && dup2(fd, 3) == -1)
208 3baa2617 2022-02-16 op fatal("cannot setup imsg fd");
209 3baa2617 2022-02-16 op } else if (fcntl(F_SETFD, 0) == -1)
210 3baa2617 2022-02-16 op fatal("cannot setup imsg fd");
213 3baa2617 2022-02-16 op argv[argc++] = argv0;
215 3baa2617 2022-02-16 op switch (proc) {
216 3baa2617 2022-02-16 op case PROC_MAIN:
217 4c86871a 2022-02-17 op argv[argc++] = "-s";
218 4c86871a 2022-02-17 op argv[argc++] = csock;
219 1d673950 2022-03-03 op argv[argc++] = "-Tm";
221 3baa2617 2022-02-16 op case PROC_PLAYER:
222 3baa2617 2022-02-16 op argv[argc++] = "-Tp";
227 3baa2617 2022-02-16 op argv[argc++] = "-d";
229 3baa2617 2022-02-16 op argv[argc++] = "-v";
230 3baa2617 2022-02-16 op argv[argc++] = NULL;
232 3baa2617 2022-02-16 op /* obnoxious casts */
233 3baa2617 2022-02-16 op execvp(argv0, (char *const *)argv);
234 3baa2617 2022-02-16 op fatal("execvp %s", argv0);
237 3baa2617 2022-02-16 op /* daemon main routine */
238 6a1b899f 2022-03-10 op static __dead void
239 3baa2617 2022-02-16 op amused_main(void)
241 3baa2617 2022-02-16 op int pipe_main2player[2];
242 1738062c 2023-10-07 op int control_fd, flags;
244 3baa2617 2022-02-16 op log_init(debug, LOG_DAEMON);
245 3baa2617 2022-02-16 op log_setverbose(verbose);
246 3baa2617 2022-02-16 op log_procinit("main");
248 07631126 2024-04-13 op if (!debug && daemon(1, 0) == -1)
249 07631126 2024-04-13 op fatal("daemon");
251 1738062c 2023-10-07 op if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_main2player) == -1)
252 3baa2617 2022-02-16 op fatal("socketpair");
254 1738062c 2023-10-07 op if ((flags = fcntl(pipe_main2player[0], F_GETFL)) == -1 ||
255 1738062c 2023-10-07 op fcntl(pipe_main2player[0], F_SETFL, flags | O_NONBLOCK) == -1 ||
256 1738062c 2023-10-07 op (flags = fcntl(pipe_main2player[1], F_GETFL)) == -1 ||
257 1738062c 2023-10-07 op fcntl(pipe_main2player[1], F_SETFL, flags | O_NONBLOCK) == -1)
258 1738062c 2023-10-07 op fatal("fcntl(O_NONBLOCK)");
260 1738062c 2023-10-07 op if (fcntl(pipe_main2player[0], F_SETFD, FD_CLOEXEC) == -1 ||
261 1738062c 2023-10-07 op fcntl(pipe_main2player[1], F_SETFD, FD_CLOEXEC) == -1)
262 1738062c 2023-10-07 op fatal("fcntl(CLOEXEC)");
264 3baa2617 2022-02-16 op player_pid = start_child(PROC_PLAYER, pipe_main2player[1]);
266 0a53bd62 2023-08-16 op if (ev_init() == -1)
267 0a53bd62 2023-08-16 op fatal("ev_init");
269 3baa2617 2022-02-16 op signal(SIGHUP, SIG_IGN);
270 3baa2617 2022-02-16 op signal(SIGCHLD, SIG_IGN);
271 3baa2617 2022-02-16 op signal(SIGPIPE, SIG_IGN);
273 0a53bd62 2023-08-16 op ev_signal(SIGINT, main_sig_handler, NULL);
274 0a53bd62 2023-08-16 op ev_signal(SIGTERM, main_sig_handler, NULL);
276 3baa2617 2022-02-16 op iev_player = xmalloc(sizeof(*iev_player));
277 50e0da0e 2024-01-21 op imsg_init(&iev_player->imsgbuf, pipe_main2player[0]);
278 3baa2617 2022-02-16 op iev_player->handler = main_dispatch_player;
279 6be81433 2024-04-14 op iev_player->events = EV_READ;
280 50e0da0e 2024-01-21 op ev_add(iev_player->imsgbuf.fd, iev_player->events,
281 3baa2617 2022-02-16 op iev_player->handler, iev_player);
283 3baa2617 2022-02-16 op if ((control_fd = control_init(csock)) == -1)
284 3baa2617 2022-02-16 op fatal("control socket setup failed %s", csock);
285 3baa2617 2022-02-16 op control_listen(control_fd);
287 3baa2617 2022-02-16 op if (pledge("stdio rpath unix sendfd", NULL) == -1)
288 3baa2617 2022-02-16 op fatal("pledge");
290 3baa2617 2022-02-16 op log_info("startup");
292 3baa2617 2022-02-16 op main_shutdown();
296 3baa2617 2022-02-16 op main(int argc, char **argv)
298 1d673950 2022-03-03 op int ch, proc = -1;
300 3baa2617 2022-02-16 op log_init(1, LOG_DAEMON); /* Log to stderr until daemonized */
301 3baa2617 2022-02-16 op log_setverbose(1);
303 3baa2617 2022-02-16 op argv0 = argv[0];
304 3baa2617 2022-02-16 op if (argv0 == NULL)
305 3baa2617 2022-02-16 op argv0 = "amused";
307 d307e5a2 2022-02-19 op while ((ch = getopt(argc, argv, "ds:T:v")) != -1) {
308 3baa2617 2022-02-16 op switch (ch) {
314 3baa2617 2022-02-16 op csock = xstrdup(optarg);
317 3baa2617 2022-02-16 op switch (*optarg) {
319 1d673950 2022-03-03 op proc = PROC_MAIN;
322 3baa2617 2022-02-16 op proc = PROC_PLAYER;
335 3baa2617 2022-02-16 op argv += optind;
336 3baa2617 2022-02-16 op argc -= optind;
338 1d673950 2022-03-03 op if (proc == PROC_MAIN)
339 1d673950 2022-03-03 op amused_main();
340 3baa2617 2022-02-16 op if (proc == PROC_PLAYER)
341 3baa2617 2022-02-16 op exit(player(debug, verbose));
343 83f1c895 2023-12-10 op if (csock == NULL) {
344 83f1c895 2023-12-10 op const char *tmpdir;
346 83f1c895 2023-12-10 op if ((tmpdir = getenv("TMPDIR")) == NULL)
347 83f1c895 2023-12-10 op tmpdir = "/tmp";
349 83f1c895 2023-12-10 op xasprintf(&csock, "%s/amused-%d", tmpdir, getuid());
352 1d673950 2022-03-03 op if (argc > 0)
355 1d673950 2022-03-03 op ctl(argc, argv);
359 fea541a8 2022-02-16 op spawn_daemon(void)
361 fea541a8 2022-02-16 op start_child(PROC_MAIN, -1);
365 3baa2617 2022-02-16 op imsg_event_add(struct imsgev *iev)
367 6be81433 2024-04-14 op iev->events = EV_READ;
368 50e0da0e 2024-01-21 op if (iev->imsgbuf.w.queued)
369 6be81433 2024-04-14 op iev->events |= EV_WRITE;
371 50e0da0e 2024-01-21 op ev_add(iev->imsgbuf.fd, iev->events, iev->handler, iev);
375 3baa2617 2022-02-16 op imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
376 3baa2617 2022-02-16 op pid_t pid, int fd, const void *data, uint16_t datalen)
380 50e0da0e 2024-01-21 op if ((ret = imsg_compose(&iev->imsgbuf, type, peerid, pid, fd, data,
381 3baa2617 2022-02-16 op datalen)) != -1)
382 3baa2617 2022-02-16 op imsg_event_add(iev);
388 791d3db3 2022-07-09 op main_send_player(uint16_t type, int fd, const void *data, size_t len)
390 791d3db3 2022-07-09 op return imsg_compose_event(iev_player, type, 0, 0, fd, data, len);
394 a975dca9 2022-05-10 op main_play_song(const char *path)
396 dfe2ad96 2022-02-24 op struct stat sb;
399 3baa2617 2022-02-16 op if ((fd = open(path, O_RDONLY)) == -1) {
400 3baa2617 2022-02-16 op log_warn("open %s", path);
404 dfe2ad96 2022-02-24 op if (fstat(fd, &sb) == -1) {
405 dfe2ad96 2022-02-24 op log_warn("failed to stat %s", path);
410 58b2f322 2022-06-11 op if (!S_ISREG(sb.st_mode)) {
411 58b2f322 2022-06-11 op log_info("skipping non-regular file: %s", path);
416 aaccc123 2022-02-16 op play_state = STATE_PLAYING;
417 791d3db3 2022-07-09 op main_send_player(IMSG_PLAY, fd, NULL, 0);
422 a913de21 2022-02-17 op main_playlist_jump(struct imsgev *iev, struct imsg *imsg)
424 a913de21 2022-02-17 op char arg[PATH_MAX];
425 a913de21 2022-02-17 op const char *song;
427 9307af9e 2024-01-21 op if (imsg_get_data(imsg, arg, sizeof(arg)) == -1) {
428 a913de21 2022-02-17 op main_senderr(iev, "wrong size");
432 a913de21 2022-02-17 op if (arg[sizeof(arg)-1] != '\0') {
433 a913de21 2022-02-17 op main_senderr(iev, "data corrupted");
437 a913de21 2022-02-17 op song = playlist_jump(arg);
438 a913de21 2022-02-17 op if (song == NULL) {
439 a913de21 2022-02-17 op main_senderr(iev, "not found");
443 15aecb89 2022-07-12 op control_notify(IMSG_CTL_JUMP);
445 791d3db3 2022-07-09 op main_send_player(IMSG_STOP, -1, NULL, 0);
446 a913de21 2022-02-17 op if (!main_play_song(song)) {
447 a913de21 2022-02-17 op main_senderr(iev, "can't play");
448 a913de21 2022-02-17 op playlist_dropcurrent();
449 a913de21 2022-02-17 op main_playlist_advance();
453 a913de21 2022-02-17 op main_send_status(iev);
457 2f589330 2022-02-17 op main_playlist_resume(void)
459 2f589330 2022-02-17 op const char *song;
461 74c987d5 2022-02-19 op if ((song = current_song) == NULL)
462 2f589330 2022-02-17 op song = playlist_advance();
464 c8777fe4 2022-02-17 op for (; song != NULL; song = playlist_advance()) {
465 2f589330 2022-02-17 op if (main_play_song(song))
468 2f589330 2022-02-17 op playlist_dropcurrent();
473 aaccc123 2022-02-16 op main_playlist_advance(void)
475 aaccc123 2022-02-16 op const char *song;
478 aaccc123 2022-02-16 op song = playlist_advance();
479 aaccc123 2022-02-16 op if (song == NULL)
482 aaccc123 2022-02-16 op if (main_play_song(song))
485 13b83883 2022-02-16 op playlist_dropcurrent();
490 af27e631 2022-02-17 op main_playlist_previous(void)
492 af27e631 2022-02-17 op const char *song;
495 af27e631 2022-02-17 op song = playlist_previous();
496 af27e631 2022-02-17 op if (song == NULL)
499 af27e631 2022-02-17 op if (main_play_song(song))
502 af27e631 2022-02-17 op playlist_dropcurrent();
507 19d6b480 2022-02-17 op main_senderr(struct imsgev *iev, const char *msg)
509 19d6b480 2022-02-17 op imsg_compose_event(iev, IMSG_CTL_ERR, 0, 0, -1,
510 19d6b480 2022-02-17 op msg, strlen(msg)+1);
514 19d6b480 2022-02-17 op main_enqueue(int tx, struct playlist *px, struct imsgev *iev,
515 19d6b480 2022-02-17 op struct imsg *imsg)
517 e06ad444 2022-06-09 op char path[PATH_MAX];
518 3baa2617 2022-02-16 op const char *err = NULL;
520 9307af9e 2024-01-21 op if (imsg_get_data(imsg, path, sizeof(path)) == -1) {
521 3baa2617 2022-02-16 op err = "data size mismatch";
525 9307af9e 2024-01-21 op if (path[sizeof(path)-1] != '\0') {
526 3baa2617 2022-02-16 op err = "malformed data";
531 19d6b480 2022-02-17 op playlist_push(px, path);
533 19d6b480 2022-02-17 op playlist_enqueue(path);
534 3baa2617 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_ADD, 0, 0, -1, path, sizeof(path));
537 0f5568cb 2022-03-02 op main_senderr(iev, err);
541 d980494c 2022-02-16 op main_send_playlist(struct imsgev *iev)
543 63dd8e70 2022-02-17 op struct player_status s;
546 d980494c 2022-02-16 op for (i = 0; i < playlist.len; ++i) {
547 63dd8e70 2022-02-17 op memset(&s, 0, sizeof(s));
548 63dd8e70 2022-02-17 op strlcpy(s.path, playlist.songs[i], sizeof(s.path));
549 63dd8e70 2022-02-17 op s.status = play_off == i ? STATE_PLAYING : STATE_STOPPED;
550 63dd8e70 2022-02-17 op imsg_compose_event(iev, IMSG_CTL_SHOW, 0, 0, -1, &s,
554 d980494c 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_SHOW, 0, 0, -1, NULL, 0);
558 bb3f279f 2022-02-16 op main_send_status(struct imsgev *iev)
560 bb3f279f 2022-02-16 op struct player_status s;
562 bb3f279f 2022-02-16 op memset(&s, 0, sizeof(s));
564 74c987d5 2022-02-19 op if (current_song != NULL)
565 74c987d5 2022-02-19 op strlcpy(s.path, current_song, sizeof(s.path));
566 bb3f279f 2022-02-16 op s.status = play_state;
567 ff06024f 2022-07-08 op s.position = current_position;
568 ff06024f 2022-07-08 op s.duration = current_duration;
569 9fb94242 2022-07-13 op s.mode.repeat_all = repeat_all;
570 9fb94242 2022-07-13 op s.mode.repeat_one = repeat_one;
571 9fb94242 2022-07-13 op s.mode.consume = consume;
573 bb3f279f 2022-02-16 op imsg_compose_event(iev, IMSG_CTL_STATUS, 0, 0, -1, &s, sizeof(s));
577 15aecb89 2022-07-12 op main_seek(struct player_seek *s)
579 15aecb89 2022-07-12 op switch (play_state) {
580 15aecb89 2022-07-12 op case STATE_STOPPED:
581 15aecb89 2022-07-12 op main_playlist_resume();
583 15aecb89 2022-07-12 op case STATE_PLAYING:
585 15aecb89 2022-07-12 op case STATE_PAUSED:
586 15aecb89 2022-07-12 op play_state = STATE_PLAYING;
590 15aecb89 2022-07-12 op main_send_player(IMSG_CTL_SEEK, -1, s, sizeof(*s));