1459df4baee3bf68c51e29dbfa043f63c83acad7
1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2017 The Music Player Daemon Project
3 * Project homepage: http://musicpd.org
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
20 #include "config.h"
21 #include "ncmpc.h"
22 #include "mpdclient.h"
23 #include "gidle.h"
24 #include "charset.h"
25 #include "options.h"
26 #include "command.h"
27 #include "ncu.h"
28 #include "screen.h"
29 #include "screen_utils.h"
30 #include "screen_status.h"
31 #include "strfsong.h"
32 #include "i18n.h"
33 #include "player_command.h"
35 #ifndef NCMPC_MINI
36 #include "conf.h"
37 #endif
39 #ifdef ENABLE_LYRICS_SCREEN
40 #include "lyrics.h"
41 #endif
43 #ifdef ENABLE_LIRC
44 #include "lirc.h"
45 #endif
47 #include <mpd/client.h>
49 #include <stdlib.h>
50 #include <unistd.h>
51 #include <fcntl.h>
52 #include <signal.h>
53 #include <string.h>
55 #ifdef ENABLE_LOCALE
56 #include <locale.h>
57 #endif
59 /* time between mpd updates [ms] */
60 static const guint update_interval = 500;
62 #define BUFSIZE 1024
64 static struct mpdclient *mpd = NULL;
65 static GMainLoop *main_loop;
66 static guint reconnect_source_id, update_source_id;
67 static int sigwinch_pipes[2];
69 #ifndef NCMPC_MINI
70 static guint check_key_bindings_source_id;
71 #endif
73 #ifndef NCMPC_MINI
74 static void
75 update_xterm_title(void)
76 {
77 struct mpd_status *status = NULL;
78 const struct mpd_song *song = NULL;
79 if (mpd) {
80 status = mpd->status;
81 song = mpd->song;
82 }
84 char tmp[BUFSIZE];
85 if (options.xterm_title_format && status && song &&
86 mpd_status_get_state(status) == MPD_STATE_PLAY)
87 strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
88 else
89 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
91 static char title[BUFSIZE];
92 if (strncmp(title, tmp, BUFSIZE)) {
93 g_strlcpy(title, tmp, BUFSIZE);
94 set_xterm_title("%s", title);
95 }
96 }
97 #endif
99 static void
100 exit_and_cleanup(void)
101 {
102 screen_exit();
103 #ifndef NCMPC_MINI
104 set_xterm_title("");
105 #endif
106 printf("\n");
108 if (mpd) {
109 mpdclient_free(mpd);
110 }
111 }
113 #ifndef WIN32
114 static void
115 catch_sigint(gcc_unused int sig)
116 {
117 g_main_loop_quit(main_loop);
118 }
121 static void
122 catch_sigcont(gcc_unused int sig)
123 {
124 char irrelevant = 'a';
125 if (1 != write(sigwinch_pipes[1], &irrelevant, 1))
126 exit(EXIT_FAILURE);
127 }
129 void
130 sigstop(void)
131 {
132 def_prog_mode(); /* save the tty modes */
133 endwin(); /* end curses mode temporarily */
134 kill(0, SIGSTOP); /* issue SIGSTOP */
135 }
137 static gboolean
138 sigwinch_event(gcc_unused GIOChannel *source,
139 gcc_unused GIOCondition condition, gcc_unused gpointer data)
140 {
141 char ignoreme[64];
142 if (1 > read(sigwinch_pipes[0], ignoreme, 64))
143 exit(EXIT_FAILURE);
145 endwin();
146 refresh();
147 screen_resize(mpd);
149 return TRUE;
150 }
152 static void
153 catch_sigwinch(gcc_unused int sig)
154 {
155 if (1 != write(sigwinch_pipes[1], "", 1))
156 exit(EXIT_FAILURE);
157 }
158 #endif /* WIN32 */
160 static void
161 idle_callback(enum mpd_error error,
162 gcc_unused enum mpd_server_error server_error,
163 const char *message, enum mpd_idle events,
164 gcc_unused void *ctx);
166 static gboolean
167 timer_mpd_update(gpointer data);
169 static void
170 enable_update_timer(void)
171 {
172 if (update_source_id != 0)
173 return;
175 update_source_id = g_timeout_add(update_interval,
176 timer_mpd_update, NULL);
177 }
179 static void
180 disable_update_timer(void)
181 {
182 if (update_source_id == 0)
183 return;
185 g_source_remove(update_source_id);
186 update_source_id = 0;
187 }
189 static bool
190 should_enable_update_timer(void)
191 {
192 return (mpdclient_is_connected(mpd) &&
193 mpd->status != NULL &&
194 mpd_status_get_state(mpd->status) == MPD_STATE_PLAY)
195 #ifndef NCMPC_MINI
196 || options.display_time
197 #endif
198 ;
199 }
201 static void
202 auto_update_timer(void)
203 {
204 if (should_enable_update_timer())
205 enable_update_timer();
206 else
207 disable_update_timer();
208 }
210 static void
211 check_reconnect(void);
213 static void
214 do_mpd_update(void)
215 {
216 if (mpdclient_is_connected(mpd) &&
217 (mpd->events != 0 ||
218 (mpd->status != NULL &&
219 mpd_status_get_state(mpd->status) == MPD_STATE_PLAY)))
220 mpdclient_update(mpd);
222 #ifndef NCMPC_MINI
223 if (options.enable_xterm_title)
224 update_xterm_title();
225 #endif
227 screen_update(mpd);
228 mpd->events = 0;
230 mpdclient_put_connection(mpd);
231 check_reconnect();
232 }
234 static char *
235 settings_name(const struct mpd_settings *settings)
236 {
237 const char *host = mpd_settings_get_host(settings);
238 if (host == NULL)
239 host = _("unknown");
241 if (host[0] == '/')
242 return g_strdup(host);
244 unsigned port = mpd_settings_get_port(settings);
245 if (port == 0 || port == 6600)
246 return g_strdup(host);
248 return g_strdup_printf("%s:%u", host, port);
249 }
251 static char *
252 default_settings_name(void)
253 {
254 struct mpd_settings *settings =
255 mpd_settings_new(options.host, options.port, 0,
256 NULL, options.password);
257 if (settings == NULL)
258 return g_strdup(_("unknown"));
260 char *name = settings_name(settings);
261 mpd_settings_free(settings);
263 return name;
264 }
266 /**
267 * This timer is installed when the connection to the MPD server is
268 * broken. It tries to recover by reconnecting periodically.
269 */
270 static gboolean
271 timer_reconnect(gcc_unused gpointer data)
272 {
273 assert(!mpdclient_is_connected(mpd));
275 reconnect_source_id = 0;
277 char *name = default_settings_name();
278 screen_status_printf(_("Connecting to %s... [Press %s to abort]"),
279 name, get_key_names(CMD_QUIT, false));
280 g_free(name);
281 doupdate();
283 mpdclient_disconnect(mpd);
284 if (!mpdclient_connect(mpd, options.host, options.port,
285 options.timeout_ms,
286 options.password)) {
287 /* try again in 5 seconds */
288 reconnect_source_id = g_timeout_add(5000,
289 timer_reconnect, NULL);
290 return FALSE;
291 }
293 struct mpd_connection *connection = mpdclient_get_connection(mpd);
295 #ifndef NCMPC_MINI
296 /* quit if mpd is pre 0.14 - song id not supported by mpd */
297 if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0) {
298 const unsigned *version =
299 mpd_connection_get_server_version(connection);
300 screen_status_printf(_("Error: MPD version %d.%d.%d is too old (%s needed)"),
301 version[0], version[1], version[2],
302 "0.16.0");
303 mpdclient_disconnect(mpd);
304 doupdate();
306 /* try again after 30 seconds */
307 reconnect_source_id = g_timeout_add(30000,
308 timer_reconnect, NULL);
309 return FALSE;
310 }
311 #endif
313 mpd->source = mpd_glib_new(connection,
314 idle_callback, mpd);
316 screen_status_clear_message();
317 doupdate();
319 /* update immediately */
320 mpd->events = MPD_IDLE_ALL;
322 do_mpd_update();
324 auto_update_timer();
326 return FALSE;
327 }
329 static void
330 check_reconnect(void)
331 {
332 if (!mpdclient_is_connected(mpd) && reconnect_source_id == 0)
333 /* reconnect when the connection is lost */
334 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
335 NULL);
336 }
338 /**
339 * This function is called by the gidle.c library when MPD sends us an
340 * idle event (or when the connection dies).
341 */
342 static void
343 idle_callback(enum mpd_error error,
344 gcc_unused enum mpd_server_error server_error,
345 const char *message, enum mpd_idle events,
346 void *ctx)
347 {
348 struct mpdclient *c = ctx;
350 c->idle = false;
352 assert(mpdclient_is_connected(c));
354 if (error != MPD_ERROR_SUCCESS) {
355 char *allocated;
356 if (error == MPD_ERROR_SERVER)
357 message = allocated = utf8_to_locale(message);
358 else
359 allocated = NULL;
360 screen_status_message(message);
361 g_free(allocated);
362 screen_bell();
363 doupdate();
365 mpdclient_disconnect(c);
366 screen_update(mpd);
367 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
368 NULL);
369 return;
370 }
372 c->events |= events;
373 mpdclient_update(c);
375 #ifndef NCMPC_MINI
376 if (options.enable_xterm_title)
377 update_xterm_title();
378 #endif
380 screen_update(mpd);
381 c->events = 0;
383 mpdclient_put_connection(c);
384 check_reconnect();
385 auto_update_timer();
386 }
388 static gboolean
389 timer_mpd_update(gcc_unused gpointer data)
390 {
391 do_mpd_update();
393 if (should_enable_update_timer())
394 return true;
395 else {
396 update_source_id = 0;
397 return false;
398 }
399 }
401 void begin_input_event(void)
402 {
403 }
405 void end_input_event(void)
406 {
407 screen_update(mpd);
408 mpd->events = 0;
410 mpdclient_put_connection(mpd);
411 check_reconnect();
412 auto_update_timer();
413 }
415 int do_input_event(command_t cmd)
416 {
417 if (cmd == CMD_QUIT) {
418 g_main_loop_quit(main_loop);
419 return -1;
420 }
422 screen_cmd(mpd, cmd);
424 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
425 /* make sure we don't update the volume yet */
426 disable_update_timer();
428 return 0;
429 }
431 static gboolean
432 keyboard_event(gcc_unused GIOChannel *source,
433 gcc_unused GIOCondition condition,
434 gcc_unused gpointer data)
435 {
436 begin_input_event();
438 command_t cmd = get_keyboard_command();
439 if (cmd != CMD_NONE)
440 if (do_input_event(cmd) != 0)
441 return FALSE;
443 end_input_event();
444 return TRUE;
445 }
447 #ifndef NCMPC_MINI
448 /**
449 * Check the configured key bindings for errors, and display a status
450 * message every 10 seconds.
451 */
452 static gboolean
453 timer_check_key_bindings(gcc_unused gpointer data)
454 {
455 char buf[256];
457 if (check_key_bindings(NULL, buf, sizeof(buf))) {
458 /* no error: disable this timer for the rest of this
459 process */
460 check_key_bindings_source_id = 0;
461 return FALSE;
462 }
464 #ifdef ENABLE_KEYDEF_SCREEN
465 g_strchomp(buf);
466 g_strlcat(buf, " (", sizeof(buf));
467 /* to translators: a key was bound twice in the key editor,
468 and this is a hint for the user what to press to correct
469 that */
470 char comment[64];
471 g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
472 get_key_names(CMD_SCREEN_KEYDEF, false));
473 g_strlcat(buf, comment, sizeof(buf));
474 g_strlcat(buf, ")", sizeof(buf));
475 #endif
477 screen_status_printf("%s", buf);
479 doupdate();
480 return TRUE;
481 }
482 #endif
484 int
485 main(int argc, const char *argv[])
486 {
487 #ifdef ENABLE_LOCALE
488 #ifndef ENABLE_NLS
489 gcc_unused
490 #endif
491 const char *charset = NULL;
492 /* time and date formatting */
493 setlocale(LC_TIME,"");
494 /* care about sorting order etc */
495 setlocale(LC_COLLATE,"");
496 /* charset */
497 setlocale(LC_CTYPE,"");
498 /* initialize charset conversions */
499 charset = charset_init();
501 /* initialize i18n support */
502 #endif
504 #ifdef ENABLE_NLS
505 setlocale(LC_MESSAGES, "");
506 bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
507 #ifdef ENABLE_LOCALE
508 bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
509 #endif
510 textdomain(GETTEXT_PACKAGE);
511 #endif
513 /* initialize options */
514 options_init();
516 /* parse command line options - 1 pass get configuration files */
517 options_parse(argc, argv);
519 #ifndef NCMPC_MINI
520 /* read configuration */
521 read_configuration();
523 /* check key bindings */
524 check_key_bindings(NULL, NULL, 0);
525 #endif
527 /* parse command line options - 2 pass */
528 options_parse(argc, argv);
530 #ifndef WIN32
531 /* setup signal behavior - SIGINT */
532 struct sigaction act;
533 sigemptyset(&act.sa_mask);
534 act.sa_flags = 0;
535 act.sa_handler = catch_sigint;
536 if (sigaction(SIGINT, &act, NULL) < 0) {
537 perror("signal");
538 exit(EXIT_FAILURE);
539 }
541 /* setup signal behavior - SIGTERM */
543 act.sa_handler = catch_sigint;
544 if (sigaction(SIGTERM, &act, NULL) < 0) {
545 perror("sigaction()");
546 exit(EXIT_FAILURE);
547 }
549 /* setup signal behavior - SIGCONT */
551 act.sa_handler = catch_sigcont;
552 if (sigaction(SIGCONT, &act, NULL) < 0) {
553 perror("sigaction(SIGCONT)");
554 exit(EXIT_FAILURE);
555 }
557 /* setup signal behaviour - SIGHUP*/
559 act.sa_handler = catch_sigint;
560 if (sigaction(SIGHUP, &act, NULL) < 0) {
561 perror("sigaction(SIGHUP)");
562 exit(EXIT_FAILURE);
563 }
565 /* setup SIGWINCH */
567 act.sa_flags = SA_RESTART;
568 act.sa_handler = catch_sigwinch;
569 if (sigaction(SIGWINCH, &act, NULL) < 0) {
570 perror("sigaction(SIGWINCH)");
571 exit(EXIT_FAILURE);
572 }
574 /* ignore SIGPIPE */
576 act.sa_handler = SIG_IGN;
577 if (sigaction(SIGPIPE, &act, NULL) < 0) {
578 perror("sigaction(SIGPIPE)");
579 exit(EXIT_FAILURE);
580 }
581 #endif
583 ncu_init();
585 #ifdef ENABLE_LYRICS_SCREEN
586 lyrics_init();
587 #endif
589 /* create mpdclient instance */
590 mpd = mpdclient_new();
592 /* initialize curses */
593 screen_init(mpd);
595 /* the main loop */
596 main_loop = g_main_loop_new(NULL, FALSE);
598 /* watch out for keyboard input */
599 GIOChannel *keyboard_channel = g_io_channel_unix_new(STDIN_FILENO);
600 g_io_add_watch(keyboard_channel, G_IO_IN, keyboard_event, NULL);
602 #ifdef ENABLE_LIRC
603 /* watch out for lirc input */
604 int lirc_socket = ncmpc_lirc_open();
605 GIOChannel *lirc_channel = NULL;
606 if (lirc_socket >= 0) {
607 lirc_channel = g_io_channel_unix_new(lirc_socket);
608 g_io_add_watch(lirc_channel, G_IO_IN, lirc_event, NULL);
609 }
610 #endif
612 #ifndef WIN32
613 GIOChannel *sigwinch_channel = NULL;
614 if (!pipe(sigwinch_pipes) &&
615 !fcntl(sigwinch_pipes[1], F_SETFL, O_NONBLOCK)) {
616 sigwinch_channel = g_io_channel_unix_new(sigwinch_pipes[0]);
617 g_io_add_watch(sigwinch_channel, G_IO_IN, sigwinch_event, NULL);
618 }
619 else {
620 perror("sigwinch pipe creation failed");
621 exit(EXIT_FAILURE);
622 }
623 #endif
625 /* attempt to connect */
626 reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
628 auto_update_timer();
630 #ifndef NCMPC_MINI
631 check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
632 #endif
634 screen_paint(mpd);
636 g_main_loop_run(main_loop);
638 /* cleanup */
640 cancel_seek_timer();
642 disable_update_timer();
644 if (reconnect_source_id != 0)
645 g_source_remove(reconnect_source_id);
647 #ifndef NCMPC_MINI
648 if (check_key_bindings_source_id != 0)
649 g_source_remove(check_key_bindings_source_id);
650 #endif
652 g_main_loop_unref(main_loop);
653 g_io_channel_unref(keyboard_channel);
654 g_io_channel_unref(sigwinch_channel);
655 close(sigwinch_pipes[0]);
656 close(sigwinch_pipes[1]);
658 #ifdef ENABLE_LIRC
659 if (lirc_socket >= 0)
660 g_io_channel_unref(lirc_channel);
661 ncmpc_lirc_close();
662 #endif
664 exit_and_cleanup();
666 #ifdef ENABLE_LYRICS_SCREEN
667 lyrics_deinit();
668 #endif
670 ncu_deinit();
671 options_deinit();
673 return 0;
674 }