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 check_reconnect();
152 }
154 static char *
155 settings_name(const struct mpd_settings *settings)
156 {
157 const char *host = mpd_settings_get_host(settings);
158 if (host == NULL)
159 host = _("unknown");
161 if (host[0] == '/')
162 return g_strdup(host);
164 unsigned port = mpd_settings_get_port(settings);
165 if (port == 0 || port == 6600)
166 return g_strdup(host);
168 return g_strdup_printf("%s:%u", host, port);
169 }
171 static char *
172 default_settings_name(void)
173 {
174 struct mpd_settings *settings =
175 mpd_settings_new(options.host, options.port, 0,
176 NULL, options.password);
177 if (settings == NULL)
178 return g_strdup(_("unknown"));
180 char *name = settings_name(settings);
181 mpd_settings_free(settings);
183 return name;
184 }
186 /**
187 * This timer is installed when the connection to the MPD server is
188 * broken. It tries to recover by reconnecting periodically.
189 */
190 static gboolean
191 timer_reconnect(gcc_unused gpointer data)
192 {
193 assert(mpdclient_is_dead(mpd));
195 reconnect_source_id = 0;
197 char *name = default_settings_name();
198 screen_status_printf(_("Connecting to %s... [Press %s to abort]"),
199 name, get_key_names(CMD_QUIT, false));
200 g_free(name);
201 doupdate();
203 mpdclient_connect(mpd);
205 return FALSE;
206 }
208 static void
209 check_reconnect(void)
210 {
211 if (mpdclient_is_dead(mpd) && reconnect_source_id == 0)
212 /* reconnect when the connection is lost */
213 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
214 NULL);
215 }
217 void
218 mpdclient_connected_callback(void)
219 {
220 assert(reconnect_source_id == 0);
222 #ifndef NCMPC_MINI
223 /* quit if mpd is pre 0.14 - song id not supported by mpd */
224 struct mpd_connection *connection = mpdclient_get_connection(mpd);
225 if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0) {
226 const unsigned *version =
227 mpd_connection_get_server_version(connection);
228 screen_status_printf(_("Error: MPD version %d.%d.%d is too old (%s needed)"),
229 version[0], version[1], version[2],
230 "0.16.0");
231 mpdclient_disconnect(mpd);
232 doupdate();
234 /* try again after 30 seconds */
235 reconnect_source_id = g_timeout_add(30000,
236 timer_reconnect, NULL);
237 return;
238 }
239 #endif
241 screen_status_clear_message();
242 doupdate();
244 /* update immediately */
245 mpd->events = MPD_IDLE_ALL;
247 do_mpd_update();
249 auto_update_timer();
250 }
252 void
253 mpdclient_failed_callback(void)
254 {
255 assert(reconnect_source_id == 0);
257 /* try again in 5 seconds */
258 reconnect_source_id = g_timeout_add(5000,
259 timer_reconnect, NULL);
260 }
262 void
263 mpdclient_lost_callback(void)
264 {
265 assert(reconnect_source_id == 0);
267 screen_update(mpd);
269 reconnect_source_id = g_timeout_add(1000, timer_reconnect, NULL);
270 }
272 /**
273 * This function is called by the gidle.c library when MPD sends us an
274 * idle event (or when the connection dies).
275 */
276 void
277 mpdclient_idle_callback(gcc_unused enum mpd_idle events)
278 {
279 #ifndef NCMPC_MINI
280 if (options.enable_xterm_title)
281 update_xterm_title();
282 #endif
284 screen_update(mpd);
285 auto_update_timer();
286 }
288 static gboolean
289 timer_mpd_update(gcc_unused gpointer data)
290 {
291 do_mpd_update();
293 if (should_enable_update_timer())
294 return true;
295 else {
296 update_source_id = 0;
297 return false;
298 }
299 }
301 void begin_input_event(void)
302 {
303 }
305 void end_input_event(void)
306 {
307 screen_update(mpd);
308 mpd->events = 0;
310 check_reconnect();
311 auto_update_timer();
312 }
314 bool
315 do_input_event(command_t cmd)
316 {
317 if (cmd == CMD_QUIT) {
318 g_main_loop_quit(main_loop);
319 return false;
320 }
322 screen_cmd(mpd, cmd);
324 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
325 /* make sure we don't update the volume yet */
326 disable_update_timer();
328 return true;
329 }
331 #ifndef NCMPC_MINI
332 /**
333 * Check the configured key bindings for errors, and display a status
334 * message every 10 seconds.
335 */
336 static gboolean
337 timer_check_key_bindings(gcc_unused gpointer data)
338 {
339 char buf[256];
341 if (check_key_bindings(NULL, buf, sizeof(buf))) {
342 /* no error: disable this timer for the rest of this
343 process */
344 check_key_bindings_source_id = 0;
345 return FALSE;
346 }
348 #ifdef ENABLE_KEYDEF_SCREEN
349 g_strchomp(buf);
350 g_strlcat(buf, " (", sizeof(buf));
351 /* to translators: a key was bound twice in the key editor,
352 and this is a hint for the user what to press to correct
353 that */
354 char comment[64];
355 g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
356 get_key_names(CMD_SCREEN_KEYDEF, false));
357 g_strlcat(buf, comment, sizeof(buf));
358 g_strlcat(buf, ")", sizeof(buf));
359 #endif
361 screen_status_printf("%s", buf);
363 doupdate();
364 return TRUE;
365 }
366 #endif
368 int
369 main(int argc, const char *argv[])
370 {
371 #ifdef ENABLE_LOCALE
372 #ifndef ENABLE_NLS
373 gcc_unused
374 #endif
375 const char *charset = NULL;
376 /* time and date formatting */
377 setlocale(LC_TIME,"");
378 /* care about sorting order etc */
379 setlocale(LC_COLLATE,"");
380 /* charset */
381 setlocale(LC_CTYPE,"");
382 /* initialize charset conversions */
383 charset = charset_init();
385 /* initialize i18n support */
386 #endif
388 #ifdef ENABLE_NLS
389 setlocale(LC_MESSAGES, "");
390 bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
391 #ifdef ENABLE_LOCALE
392 bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
393 #endif
394 textdomain(GETTEXT_PACKAGE);
395 #endif
397 /* initialize options */
398 options_init();
400 /* parse command line options - 1 pass get configuration files */
401 options_parse(argc, argv);
403 #ifndef NCMPC_MINI
404 /* read configuration */
405 read_configuration();
407 /* check key bindings */
408 check_key_bindings(NULL, NULL, 0);
409 #endif
411 /* parse command line options - 2 pass */
412 options_parse(argc, argv);
414 ncu_init();
416 #ifdef ENABLE_LYRICS_SCREEN
417 lyrics_init();
418 #endif
420 /* create mpdclient instance */
421 mpd = mpdclient_new(options.host, options.port,
422 options.timeout_ms,
423 options.password);
425 /* initialize curses */
426 screen_init(mpd);
428 /* the main loop */
429 main_loop = g_main_loop_new(NULL, FALSE);
431 /* watch out for keyboard input */
432 keyboard_init();
434 /* watch out for lirc input */
435 ncmpc_lirc_init();
437 signals_init(main_loop, mpd);
439 /* attempt to connect */
440 reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
442 auto_update_timer();
444 #ifndef NCMPC_MINI
445 check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
446 #endif
448 screen_paint(mpd);
450 g_main_loop_run(main_loop);
451 g_main_loop_unref(main_loop);
453 /* cleanup */
455 cancel_seek_timer();
457 disable_update_timer();
459 if (reconnect_source_id != 0)
460 g_source_remove(reconnect_source_id);
462 #ifndef NCMPC_MINI
463 if (check_key_bindings_source_id != 0)
464 g_source_remove(check_key_bindings_source_id);
465 #endif
467 signals_deinit();
468 ncmpc_lirc_deinit();
470 screen_exit();
471 #ifndef NCMPC_MINI
472 set_xterm_title("");
473 #endif
474 printf("\n");
476 mpdclient_free(mpd);
478 #ifdef ENABLE_LYRICS_SCREEN
479 lyrics_deinit();
480 #endif
482 ncu_deinit();
483 options_deinit();
485 return 0;
486 }