8536cb67c77d8e7fa8258f9ccab837b46d4bb75d
1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2010 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_message.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 <signal.h>
52 #include <string.h>
54 #ifdef ENABLE_LOCALE
55 #include <locale.h>
56 #endif
58 /* time between mpd updates [ms] */
59 static const guint update_interval = 500;
61 #define BUFSIZE 1024
63 static struct mpdclient *mpd = NULL;
64 static GMainLoop *main_loop;
65 static guint reconnect_source_id, update_source_id;
67 #ifndef NCMPC_MINI
68 static guint check_key_bindings_source_id;
69 #endif
71 #ifndef NCMPC_MINI
72 static void
73 update_xterm_title(void)
74 {
75 static char title[BUFSIZE];
76 char tmp[BUFSIZE];
77 struct mpd_status *status = NULL;
78 const struct mpd_song *song = NULL;
80 if (mpd) {
81 status = mpd->status;
82 song = mpd->song;
83 }
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 if (strncmp(title, tmp, BUFSIZE)) {
92 g_strlcpy(title, tmp, BUFSIZE);
93 set_xterm_title("%s", title);
94 }
95 }
96 #endif
98 static void
99 exit_and_cleanup(void)
100 {
101 screen_exit();
102 #ifndef NCMPC_MINI
103 set_xterm_title("");
104 #endif
105 printf("\n");
107 if (mpd) {
108 mpdclient_disconnect(mpd);
109 mpdclient_free(mpd);
110 }
111 }
113 static void
114 catch_sigint(G_GNUC_UNUSED int sig)
115 {
116 g_main_loop_quit(main_loop);
117 }
120 static void
121 catch_sigcont(G_GNUC_UNUSED int sig)
122 {
123 screen_resize(mpd);
124 }
126 void
127 sigstop(void)
128 {
129 def_prog_mode(); /* save the tty modes */
130 endwin(); /* end curses mode temporarily */
131 kill(0, SIGSTOP); /* issue SIGSTOP */
132 }
134 static guint timer_sigwinch_id;
136 static gboolean
137 timer_sigwinch(G_GNUC_UNUSED gpointer data)
138 {
139 /* the following causes the screen to flicker. There might be
140 better solutions, but I believe it isn't all that
141 important. */
143 endwin();
144 refresh();
145 screen_resize(mpd);
147 return FALSE;
148 }
150 static void
151 catch_sigwinch(G_GNUC_UNUSED int sig)
152 {
153 if (timer_sigwinch_id != 0)
154 g_source_remove(timer_sigwinch_id);
156 timer_sigwinch_id = g_timeout_add(100, timer_sigwinch, NULL);
157 }
159 static void
160 idle_callback(enum mpd_error error,
161 G_GNUC_UNUSED enum mpd_server_error server_error,
162 const char *message, enum mpd_idle events,
163 G_GNUC_UNUSED void *ctx);
165 static gboolean
166 timer_mpd_update(gpointer data);
168 static void
169 enable_update_timer(void)
170 {
171 if (update_source_id != 0)
172 return;
174 update_source_id = g_timeout_add(update_interval,
175 timer_mpd_update, NULL);
176 }
178 static void
179 disable_update_timer(void)
180 {
181 if (update_source_id == 0)
182 return;
184 g_source_remove(update_source_id);
185 update_source_id = 0;
186 }
188 static bool
189 should_enable_update_timer(void)
190 {
191 return (mpdclient_is_connected(mpd) &&
192 (mpd->source == NULL || /* "idle" not supported */
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->source == NULL || 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 #if LIBMPDCLIENT_CHECK_VERSION(2,4,0)
236 static char *
237 settings_name(const struct mpd_settings *settings)
238 {
239 const char *host = mpd_settings_get_host(settings);
240 if (host == NULL)
241 host = "unknown";
243 if (host[0] == '/')
244 return g_strdup(host);
246 unsigned port = mpd_settings_get_port(settings);
247 if (port == 0 || port == 6600)
248 return g_strdup(host);
250 return g_strdup_printf("%s:%u", host, port);
251 }
253 #endif
255 static char *
256 default_settings_name(void)
257 {
258 #if LIBMPDCLIENT_CHECK_VERSION(2,4,0)
259 struct mpd_settings *settings =
260 mpd_settings_new(options.host, options.port, 0,
261 NULL, options.password);
262 if (settings == NULL)
263 return g_strdup("unknown");
265 char *name = settings_name(settings);
266 mpd_settings_free(settings);
268 return name;
269 #else
270 return g_strdup(options.host);
271 #endif
272 }
274 static char *
275 connection_settings_name(const struct mpd_connection *connection)
276 {
277 #if LIBMPDCLIENT_CHECK_VERSION(2,4,0)
278 const struct mpd_settings *settings =
279 mpd_connection_get_settings(connection);
280 if (settings == NULL)
281 return g_strdup("unknown");
283 return settings_name(settings);
284 #else
285 (void)connection;
286 return g_strdup(options.host);
287 #endif
288 }
290 /**
291 * This timer is installed when the connection to the MPD server is
292 * broken. It tries to recover by reconnecting periodically.
293 */
294 static gboolean
295 timer_reconnect(G_GNUC_UNUSED gpointer data)
296 {
297 bool success;
298 struct mpd_connection *connection;
300 assert(!mpdclient_is_connected(mpd));
302 reconnect_source_id = 0;
304 char *name = default_settings_name();
305 screen_status_printf(_("Connecting to %s... [Press %s to abort]"),
306 name, get_key_names(CMD_QUIT,0) );
307 g_free(name);
308 doupdate();
310 mpdclient_disconnect(mpd);
311 success = mpdclient_connect(mpd,
312 options.host, options.port,
313 1.5,
314 options.password);
315 if (!success) {
316 /* try again in 5 seconds */
317 reconnect_source_id = g_timeout_add(5000,
318 timer_reconnect, NULL);
319 return FALSE;
320 }
322 connection = mpdclient_get_connection(mpd);
324 #ifndef NCMPC_MINI
325 /* quit if mpd is pre 0.11.0 - song id not supported by mpd */
326 if (mpd_connection_cmp_server_version(connection, 0, 12, 0) < 0) {
327 const unsigned *version =
328 mpd_connection_get_server_version(connection);
329 screen_status_printf(_("Error: MPD version %d.%d.%d is to old (%s needed)"),
330 version[0], version[1], version[2],
331 "0.12.0");
332 mpdclient_disconnect(mpd);
333 doupdate();
335 /* try again after 30 seconds */
336 reconnect_source_id = g_timeout_add(30000,
337 timer_reconnect, NULL);
338 return FALSE;
339 }
340 #endif
342 if (mpd_connection_cmp_server_version(connection,
343 0, 14, 0) >= 0)
344 mpd->source = mpd_glib_new(connection,
345 idle_callback, mpd);
347 name = connection_settings_name(connection);
348 screen_status_printf(_("Connected to %s"), name);
349 g_free(name);
350 doupdate();
352 /* update immediately */
353 mpd->events = MPD_IDLE_DATABASE|MPD_IDLE_STORED_PLAYLIST|
354 MPD_IDLE_QUEUE|MPD_IDLE_PLAYER|MPD_IDLE_MIXER|MPD_IDLE_OUTPUT|
355 MPD_IDLE_OPTIONS|MPD_IDLE_UPDATE;
357 do_mpd_update();
359 auto_update_timer();
361 return FALSE;
362 }
364 static void
365 check_reconnect(void)
366 {
367 if (!mpdclient_is_connected(mpd) && reconnect_source_id == 0)
368 /* reconnect when the connection is lost */
369 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
370 NULL);
371 }
373 /**
374 * This function is called by the gidle.c library when MPD sends us an
375 * idle event (or when the connectiond dies).
376 */
377 static void
378 idle_callback(enum mpd_error error, enum mpd_server_error server_error,
379 const char *message, enum mpd_idle events,
380 void *ctx)
381 {
382 struct mpdclient *c = ctx;
383 struct mpd_connection *connection;
385 c->idle = false;
387 connection = mpdclient_get_connection(c);
388 assert(connection != NULL);
390 if (error != MPD_ERROR_SUCCESS) {
391 char *allocated;
393 if (error == MPD_ERROR_SERVER &&
394 server_error == MPD_SERVER_ERROR_UNKNOWN_CMD) {
395 /* the "idle" command is not supported - fall
396 back to timer based polling */
397 mpd_glib_free(c->source);
398 c->source = NULL;
399 auto_update_timer();
400 return;
401 }
403 if (error == MPD_ERROR_SERVER)
404 message = allocated = utf8_to_locale(message);
405 else
406 allocated = NULL;
407 screen_status_message(message);
408 g_free(allocated);
409 screen_bell();
410 doupdate();
412 mpdclient_disconnect(c);
413 screen_update(mpd);
414 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
415 NULL);
416 return;
417 }
419 c->events |= events;
420 mpdclient_update(c);
422 #ifndef NCMPC_MINI
423 if (options.enable_xterm_title)
424 update_xterm_title();
425 #endif
427 screen_update(mpd);
428 c->events = 0;
430 mpdclient_put_connection(c);
431 check_reconnect();
432 auto_update_timer();
433 }
435 static gboolean
436 timer_mpd_update(G_GNUC_UNUSED gpointer data)
437 {
438 do_mpd_update();
440 if (should_enable_update_timer())
441 return true;
442 else {
443 update_source_id = 0;
444 return false;
445 }
446 }
448 void begin_input_event(void)
449 {
450 }
452 void end_input_event(void)
453 {
454 screen_update(mpd);
455 mpd->events = 0;
457 mpdclient_put_connection(mpd);
458 check_reconnect();
459 auto_update_timer();
460 }
462 int do_input_event(command_t cmd)
463 {
464 if (cmd == CMD_QUIT) {
465 g_main_loop_quit(main_loop);
466 return -1;
467 }
469 screen_cmd(mpd, cmd);
471 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
472 /* make sure we don't update the volume yet */
473 disable_update_timer();
475 return 0;
476 }
478 static gboolean
479 keyboard_event(G_GNUC_UNUSED GIOChannel *source,
480 G_GNUC_UNUSED GIOCondition condition,
481 G_GNUC_UNUSED gpointer data)
482 {
483 command_t cmd;
485 begin_input_event();
487 if ((cmd=get_keyboard_command()) != CMD_NONE)
488 if (do_input_event(cmd) != 0)
489 return FALSE;
491 end_input_event();
492 return TRUE;
493 }
495 #ifndef NCMPC_MINI
496 /**
497 * Check the configured key bindings for errors, and display a status
498 * message every 10 seconds.
499 */
500 static gboolean
501 timer_check_key_bindings(G_GNUC_UNUSED gpointer data)
502 {
503 char buf[256];
504 #ifdef ENABLE_KEYDEF_SCREEN
505 char comment[64];
506 #endif
507 gboolean key_error;
509 key_error = check_key_bindings(NULL, buf, sizeof(buf));
510 if (!key_error) {
511 /* no error: disable this timer for the rest of this
512 process */
513 check_key_bindings_source_id = 0;
514 return FALSE;
515 }
517 #ifdef ENABLE_KEYDEF_SCREEN
518 g_strchomp(buf);
519 g_strlcat(buf, " (", sizeof(buf));
520 /* to translators: a key was bound twice in the key editor,
521 and this is a hint for the user what to press to correct
522 that */
523 g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
524 get_key_names(CMD_SCREEN_KEYDEF, 0));
525 g_strlcat(buf, comment, sizeof(buf));
526 g_strlcat(buf, ")", sizeof(buf));
527 #endif
529 screen_status_printf("%s", buf);
531 doupdate();
532 return TRUE;
533 }
534 #endif
536 int
537 main(int argc, const char *argv[])
538 {
539 struct sigaction act;
540 #ifdef ENABLE_LOCALE
541 const char *charset = NULL;
542 #endif
543 GIOChannel *keyboard_channel;
544 #ifdef ENABLE_LIRC
545 int lirc_socket;
546 GIOChannel *lirc_channel = NULL;
547 #endif
549 #ifdef ENABLE_LOCALE
550 /* time and date formatting */
551 setlocale(LC_TIME,"");
552 /* care about sorting order etc */
553 setlocale(LC_COLLATE,"");
554 /* charset */
555 setlocale(LC_CTYPE,"");
556 /* initialize charset conversions */
557 charset = charset_init();
559 /* initialize i18n support */
560 #endif
562 #ifdef ENABLE_NLS
563 setlocale(LC_MESSAGES, "");
564 bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
565 #ifdef ENABLE_LOCALE
566 bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
567 #endif
568 textdomain(GETTEXT_PACKAGE);
569 #endif
571 /* initialize options */
572 options_init();
574 /* parse command line options - 1 pass get configuration files */
575 options_parse(argc, argv);
577 #ifndef NCMPC_MINI
578 /* read configuration */
579 read_configuration();
581 /* check key bindings */
582 check_key_bindings(NULL, NULL, 0);
583 #endif
585 /* parse command line options - 2 pass */
586 options_parse(argc, argv);
588 /* setup signal behavior - SIGINT */
589 sigemptyset(&act.sa_mask);
590 act.sa_flags = 0;
591 act.sa_handler = catch_sigint;
592 if (sigaction(SIGINT, &act, NULL) < 0) {
593 perror("signal");
594 exit(EXIT_FAILURE);
595 }
597 /* setup signal behavior - SIGTERM */
599 act.sa_handler = catch_sigint;
600 if (sigaction(SIGTERM, &act, NULL) < 0) {
601 perror("sigaction()");
602 exit(EXIT_FAILURE);
603 }
605 /* setup signal behavior - SIGCONT */
607 act.sa_handler = catch_sigcont;
608 if (sigaction(SIGCONT, &act, NULL) < 0) {
609 perror("sigaction(SIGCONT)");
610 exit(EXIT_FAILURE);
611 }
613 /* setup signal behaviour - SIGHUP*/
615 act.sa_handler = catch_sigint;
616 if (sigaction(SIGHUP, &act, NULL) < 0) {
617 perror("sigaction(SIGHUP)");
618 exit(EXIT_FAILURE);
619 }
621 /* setup SIGWINCH */
623 act.sa_flags = SA_RESTART;
624 act.sa_handler = catch_sigwinch;
625 if (sigaction(SIGWINCH, &act, NULL) < 0) {
626 perror("sigaction(SIGWINCH)");
627 exit(EXIT_FAILURE);
628 }
630 /* ignore SIGPIPE */
632 act.sa_handler = SIG_IGN;
633 if (sigaction(SIGPIPE, &act, NULL) < 0) {
634 perror("sigaction(SIGPIPE)");
635 exit(EXIT_FAILURE);
636 }
638 ncu_init();
640 #ifdef ENABLE_LYRICS_SCREEN
641 lyrics_init();
642 #endif
644 /* create mpdclient instance */
645 mpd = mpdclient_new();
647 /* initialize curses */
648 screen_init(mpd);
650 /* the main loop */
651 main_loop = g_main_loop_new(NULL, FALSE);
653 /* watch out for keyboard input */
654 keyboard_channel = g_io_channel_unix_new(STDIN_FILENO);
655 g_io_add_watch(keyboard_channel, G_IO_IN, keyboard_event, NULL);
657 #ifdef ENABLE_LIRC
658 /* watch out for lirc input */
659 lirc_socket = ncmpc_lirc_open();
660 if (lirc_socket >= 0) {
661 lirc_channel = g_io_channel_unix_new(lirc_socket);
662 g_io_add_watch(lirc_channel, G_IO_IN, lirc_event, NULL);
663 }
664 #endif
666 /* attempt to connect */
667 reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
669 auto_update_timer();
671 #ifndef NCMPC_MINI
672 check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
673 #endif
675 screen_paint(mpd);
677 g_main_loop_run(main_loop);
679 /* cleanup */
681 cancel_seek_timer();
683 disable_update_timer();
685 if (reconnect_source_id != 0)
686 g_source_remove(reconnect_source_id);
688 #ifndef NCMPC_MINI
689 if (check_key_bindings_source_id != 0)
690 g_source_remove(check_key_bindings_source_id);
691 #endif
693 g_main_loop_unref(main_loop);
694 g_io_channel_unref(keyboard_channel);
696 #ifdef ENABLE_LIRC
697 if (lirc_socket >= 0)
698 g_io_channel_unref(lirc_channel);
699 ncmpc_lirc_close();
700 #endif
702 exit_and_cleanup();
704 #ifdef ENABLE_LYRICS_SCREEN
705 lyrics_deinit();
706 #endif
708 ncu_deinit();
709 options_deinit();
711 return 0;
712 }