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, options.host, options.port,
206 options.timeout_ms,
207 options.password);
209 return FALSE;
210 }
212 static void
213 check_reconnect(void)
214 {
215 if (mpdclient_is_dead(mpd) && reconnect_source_id == 0)
216 /* reconnect when the connection is lost */
217 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
218 NULL);
219 }
221 void
222 mpdclient_connected_callback(void)
223 {
224 assert(reconnect_source_id == 0);
226 #ifndef NCMPC_MINI
227 /* quit if mpd is pre 0.14 - song id not supported by mpd */
228 struct mpd_connection *connection = mpdclient_get_connection(mpd);
229 if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0) {
230 const unsigned *version =
231 mpd_connection_get_server_version(connection);
232 screen_status_printf(_("Error: MPD version %d.%d.%d is too old (%s needed)"),
233 version[0], version[1], version[2],
234 "0.16.0");
235 mpdclient_disconnect(mpd);
236 doupdate();
238 /* try again after 30 seconds */
239 reconnect_source_id = g_timeout_add(30000,
240 timer_reconnect, NULL);
241 return;
242 }
243 #endif
245 screen_status_clear_message();
246 doupdate();
248 /* update immediately */
249 mpd->events = MPD_IDLE_ALL;
251 do_mpd_update();
253 auto_update_timer();
254 }
256 void
257 mpdclient_failed_callback(void)
258 {
259 assert(reconnect_source_id == 0);
261 /* try again in 5 seconds */
262 reconnect_source_id = g_timeout_add(5000,
263 timer_reconnect, NULL);
264 }
266 void
267 mpdclient_lost_callback(void)
268 {
269 assert(reconnect_source_id == 0);
271 screen_update(mpd);
273 reconnect_source_id = g_timeout_add(1000, timer_reconnect, NULL);
274 }
276 /**
277 * This function is called by the gidle.c library when MPD sends us an
278 * idle event (or when the connection dies).
279 */
280 void
281 mpdclient_idle_callback(gcc_unused enum mpd_idle events)
282 {
283 #ifndef NCMPC_MINI
284 if (options.enable_xterm_title)
285 update_xterm_title();
286 #endif
288 screen_update(mpd);
289 auto_update_timer();
290 }
292 static gboolean
293 timer_mpd_update(gcc_unused gpointer data)
294 {
295 do_mpd_update();
297 if (should_enable_update_timer())
298 return true;
299 else {
300 update_source_id = 0;
301 return false;
302 }
303 }
305 void begin_input_event(void)
306 {
307 }
309 void end_input_event(void)
310 {
311 screen_update(mpd);
312 mpd->events = 0;
314 mpdclient_put_connection(mpd);
315 check_reconnect();
316 auto_update_timer();
317 }
319 bool
320 do_input_event(command_t cmd)
321 {
322 if (cmd == CMD_QUIT) {
323 g_main_loop_quit(main_loop);
324 return false;
325 }
327 screen_cmd(mpd, cmd);
329 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
330 /* make sure we don't update the volume yet */
331 disable_update_timer();
333 return true;
334 }
336 #ifndef NCMPC_MINI
337 /**
338 * Check the configured key bindings for errors, and display a status
339 * message every 10 seconds.
340 */
341 static gboolean
342 timer_check_key_bindings(gcc_unused gpointer data)
343 {
344 char buf[256];
346 if (check_key_bindings(NULL, buf, sizeof(buf))) {
347 /* no error: disable this timer for the rest of this
348 process */
349 check_key_bindings_source_id = 0;
350 return FALSE;
351 }
353 #ifdef ENABLE_KEYDEF_SCREEN
354 g_strchomp(buf);
355 g_strlcat(buf, " (", sizeof(buf));
356 /* to translators: a key was bound twice in the key editor,
357 and this is a hint for the user what to press to correct
358 that */
359 char comment[64];
360 g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
361 get_key_names(CMD_SCREEN_KEYDEF, false));
362 g_strlcat(buf, comment, sizeof(buf));
363 g_strlcat(buf, ")", sizeof(buf));
364 #endif
366 screen_status_printf("%s", buf);
368 doupdate();
369 return TRUE;
370 }
371 #endif
373 int
374 main(int argc, const char *argv[])
375 {
376 #ifdef ENABLE_LOCALE
377 #ifndef ENABLE_NLS
378 gcc_unused
379 #endif
380 const char *charset = NULL;
381 /* time and date formatting */
382 setlocale(LC_TIME,"");
383 /* care about sorting order etc */
384 setlocale(LC_COLLATE,"");
385 /* charset */
386 setlocale(LC_CTYPE,"");
387 /* initialize charset conversions */
388 charset = charset_init();
390 /* initialize i18n support */
391 #endif
393 #ifdef ENABLE_NLS
394 setlocale(LC_MESSAGES, "");
395 bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
396 #ifdef ENABLE_LOCALE
397 bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
398 #endif
399 textdomain(GETTEXT_PACKAGE);
400 #endif
402 /* initialize options */
403 options_init();
405 /* parse command line options - 1 pass get configuration files */
406 options_parse(argc, argv);
408 #ifndef NCMPC_MINI
409 /* read configuration */
410 read_configuration();
412 /* check key bindings */
413 check_key_bindings(NULL, NULL, 0);
414 #endif
416 /* parse command line options - 2 pass */
417 options_parse(argc, argv);
419 ncu_init();
421 #ifdef ENABLE_LYRICS_SCREEN
422 lyrics_init();
423 #endif
425 /* create mpdclient instance */
426 mpd = mpdclient_new();
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 }