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 "callbacks.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"
34 #include "keyboard.h"
35 #include "lirc.h"
36 #include "signals.h"
38 #ifndef NCMPC_MINI
39 #include "conf.h"
40 #endif
42 #ifdef ENABLE_LYRICS_SCREEN
43 #include "lyrics.h"
44 #endif
46 #include <mpd/client.h>
48 #include <stdlib.h>
49 #include <unistd.h>
50 #include <fcntl.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 const struct mpd_song *song = mpd->song;
77 char tmp[BUFSIZE];
78 if (options.xterm_title_format && mpd->playing && song)
79 strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
80 else
81 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
83 static char title[BUFSIZE];
84 if (strncmp(title, tmp, BUFSIZE)) {
85 g_strlcpy(title, tmp, BUFSIZE);
86 set_xterm_title("%s", title);
87 }
88 }
89 #endif
91 static gboolean
92 timer_mpd_update(gpointer data);
94 static void
95 enable_update_timer(void)
96 {
97 if (update_source_id != 0)
98 return;
100 update_source_id = g_timeout_add(update_interval,
101 timer_mpd_update, NULL);
102 }
104 static void
105 disable_update_timer(void)
106 {
107 if (update_source_id == 0)
108 return;
110 g_source_remove(update_source_id);
111 update_source_id = 0;
112 }
114 static bool
115 should_enable_update_timer(void)
116 {
117 return mpd->playing
118 #ifndef NCMPC_MINI
119 || options.display_time
120 #endif
121 ;
122 }
124 static void
125 auto_update_timer(void)
126 {
127 if (should_enable_update_timer())
128 enable_update_timer();
129 else
130 disable_update_timer();
131 }
133 static void
134 check_reconnect(void);
136 static void
137 do_mpd_update(void)
138 {
139 if (mpdclient_is_connected(mpd) &&
140 (mpd->events != 0 || mpd->playing))
141 mpdclient_update(mpd);
143 #ifndef NCMPC_MINI
144 if (options.enable_xterm_title)
145 update_xterm_title();
146 #endif
148 screen_update(mpd);
149 mpd->events = 0;
151 mpdclient_put_connection(mpd);
152 check_reconnect();
153 }
155 static char *
156 settings_name(const struct mpd_settings *settings)
157 {
158 const char *host = mpd_settings_get_host(settings);
159 if (host == NULL)
160 host = _("unknown");
162 if (host[0] == '/')
163 return g_strdup(host);
165 unsigned port = mpd_settings_get_port(settings);
166 if (port == 0 || port == 6600)
167 return g_strdup(host);
169 return g_strdup_printf("%s:%u", host, port);
170 }
172 static char *
173 default_settings_name(void)
174 {
175 struct mpd_settings *settings =
176 mpd_settings_new(options.host, options.port, 0,
177 NULL, options.password);
178 if (settings == NULL)
179 return g_strdup(_("unknown"));
181 char *name = settings_name(settings);
182 mpd_settings_free(settings);
184 return name;
185 }
187 /**
188 * This timer is installed when the connection to the MPD server is
189 * broken. It tries to recover by reconnecting periodically.
190 */
191 static gboolean
192 timer_reconnect(gcc_unused gpointer data)
193 {
194 assert(mpdclient_is_dead(mpd));
196 reconnect_source_id = 0;
198 char *name = default_settings_name();
199 screen_status_printf(_("Connecting to %s... [Press %s to abort]"),
200 name, get_key_names(CMD_QUIT, false));
201 g_free(name);
202 doupdate();
204 mpdclient_disconnect(mpd);
205 mpdclient_connect(mpd);
207 return FALSE;
208 }
210 static void
211 check_reconnect(void)
212 {
213 if (mpdclient_is_dead(mpd) && reconnect_source_id == 0)
214 /* reconnect when the connection is lost */
215 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
216 NULL);
217 }
219 void
220 mpdclient_connected_callback(void)
221 {
222 assert(reconnect_source_id == 0);
224 #ifndef NCMPC_MINI
225 /* quit if mpd is pre 0.14 - song id not supported by mpd */
226 struct mpd_connection *connection = mpdclient_get_connection(mpd);
227 if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0) {
228 const unsigned *version =
229 mpd_connection_get_server_version(connection);
230 screen_status_printf(_("Error: MPD version %d.%d.%d is too old (%s needed)"),
231 version[0], version[1], version[2],
232 "0.16.0");
233 mpdclient_disconnect(mpd);
234 doupdate();
236 /* try again after 30 seconds */
237 reconnect_source_id = g_timeout_add(30000,
238 timer_reconnect, NULL);
239 return;
240 }
241 #endif
243 screen_status_clear_message();
244 doupdate();
246 /* update immediately */
247 mpd->events = MPD_IDLE_ALL;
249 do_mpd_update();
251 auto_update_timer();
252 }
254 void
255 mpdclient_failed_callback(void)
256 {
257 assert(reconnect_source_id == 0);
259 /* try again in 5 seconds */
260 reconnect_source_id = g_timeout_add(5000,
261 timer_reconnect, NULL);
262 }
264 void
265 mpdclient_lost_callback(void)
266 {
267 assert(reconnect_source_id == 0);
269 screen_update(mpd);
271 reconnect_source_id = g_timeout_add(1000, timer_reconnect, NULL);
272 }
274 /**
275 * This function is called by the gidle.c library when MPD sends us an
276 * idle event (or when the connection dies).
277 */
278 void
279 mpdclient_idle_callback(gcc_unused enum mpd_idle events)
280 {
281 #ifndef NCMPC_MINI
282 if (options.enable_xterm_title)
283 update_xterm_title();
284 #endif
286 screen_update(mpd);
287 auto_update_timer();
288 }
290 static gboolean
291 timer_mpd_update(gcc_unused gpointer data)
292 {
293 do_mpd_update();
295 if (should_enable_update_timer())
296 return true;
297 else {
298 update_source_id = 0;
299 return false;
300 }
301 }
303 void begin_input_event(void)
304 {
305 }
307 void end_input_event(void)
308 {
309 screen_update(mpd);
310 mpd->events = 0;
312 mpdclient_put_connection(mpd);
313 check_reconnect();
314 auto_update_timer();
315 }
317 bool
318 do_input_event(command_t cmd)
319 {
320 if (cmd == CMD_QUIT) {
321 g_main_loop_quit(main_loop);
322 return false;
323 }
325 screen_cmd(mpd, cmd);
327 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
328 /* make sure we don't update the volume yet */
329 disable_update_timer();
331 return true;
332 }
334 #ifndef NCMPC_MINI
335 /**
336 * Check the configured key bindings for errors, and display a status
337 * message every 10 seconds.
338 */
339 static gboolean
340 timer_check_key_bindings(gcc_unused gpointer data)
341 {
342 char buf[256];
344 if (check_key_bindings(NULL, buf, sizeof(buf))) {
345 /* no error: disable this timer for the rest of this
346 process */
347 check_key_bindings_source_id = 0;
348 return FALSE;
349 }
351 #ifdef ENABLE_KEYDEF_SCREEN
352 g_strchomp(buf);
353 g_strlcat(buf, " (", sizeof(buf));
354 /* to translators: a key was bound twice in the key editor,
355 and this is a hint for the user what to press to correct
356 that */
357 char comment[64];
358 g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
359 get_key_names(CMD_SCREEN_KEYDEF, false));
360 g_strlcat(buf, comment, sizeof(buf));
361 g_strlcat(buf, ")", sizeof(buf));
362 #endif
364 screen_status_printf("%s", buf);
366 doupdate();
367 return TRUE;
368 }
369 #endif
371 int
372 main(int argc, const char *argv[])
373 {
374 #ifdef ENABLE_LOCALE
375 #ifndef ENABLE_NLS
376 gcc_unused
377 #endif
378 const char *charset = NULL;
379 /* time and date formatting */
380 setlocale(LC_TIME,"");
381 /* care about sorting order etc */
382 setlocale(LC_COLLATE,"");
383 /* charset */
384 setlocale(LC_CTYPE,"");
385 /* initialize charset conversions */
386 charset = charset_init();
388 /* initialize i18n support */
389 #endif
391 #ifdef ENABLE_NLS
392 setlocale(LC_MESSAGES, "");
393 bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
394 #ifdef ENABLE_LOCALE
395 bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
396 #endif
397 textdomain(GETTEXT_PACKAGE);
398 #endif
400 /* initialize options */
401 options_init();
403 /* parse command line options - 1 pass get configuration files */
404 options_parse(argc, argv);
406 #ifndef NCMPC_MINI
407 /* read configuration */
408 read_configuration();
410 /* check key bindings */
411 check_key_bindings(NULL, NULL, 0);
412 #endif
414 /* parse command line options - 2 pass */
415 options_parse(argc, argv);
417 ncu_init();
419 #ifdef ENABLE_LYRICS_SCREEN
420 lyrics_init();
421 #endif
423 /* create mpdclient instance */
424 mpd = mpdclient_new(options.host, options.port,
425 options.timeout_ms,
426 options.password);
428 /* initialize curses */
429 screen_init(mpd);
431 /* the main loop */
432 main_loop = g_main_loop_new(NULL, FALSE);
434 /* watch out for keyboard input */
435 keyboard_init();
437 /* watch out for lirc input */
438 ncmpc_lirc_init();
440 signals_init(main_loop, mpd);
442 /* attempt to connect */
443 reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
445 auto_update_timer();
447 #ifndef NCMPC_MINI
448 check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
449 #endif
451 screen_paint(mpd);
453 g_main_loop_run(main_loop);
454 g_main_loop_unref(main_loop);
456 /* cleanup */
458 cancel_seek_timer();
460 disable_update_timer();
462 if (reconnect_source_id != 0)
463 g_source_remove(reconnect_source_id);
465 #ifndef NCMPC_MINI
466 if (check_key_bindings_source_id != 0)
467 g_source_remove(check_key_bindings_source_id);
468 #endif
470 signals_deinit();
471 ncmpc_lirc_deinit();
473 screen_exit();
474 #ifndef NCMPC_MINI
475 set_xterm_title("");
476 #endif
477 printf("\n");
479 mpdclient_free(mpd);
481 #ifdef ENABLE_LYRICS_SCREEN
482 lyrics_deinit();
483 #endif
485 ncu_deinit();
486 options_deinit();
488 return 0;
489 }