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_connect(mpd);
206 return FALSE;
207 }
209 static void
210 check_reconnect(void)
211 {
212 if (mpdclient_is_dead(mpd) && reconnect_source_id == 0)
213 /* reconnect when the connection is lost */
214 reconnect_source_id = g_timeout_add(1000, timer_reconnect,
215 NULL);
216 }
218 void
219 mpdclient_connected_callback(void)
220 {
221 assert(reconnect_source_id == 0);
223 #ifndef NCMPC_MINI
224 /* quit if mpd is pre 0.14 - song id not supported by mpd */
225 struct mpd_connection *connection = mpdclient_get_connection(mpd);
226 if (mpd_connection_cmp_server_version(connection, 0, 16, 0) < 0) {
227 const unsigned *version =
228 mpd_connection_get_server_version(connection);
229 screen_status_printf(_("Error: MPD version %d.%d.%d is too old (%s needed)"),
230 version[0], version[1], version[2],
231 "0.16.0");
232 mpdclient_disconnect(mpd);
233 doupdate();
235 /* try again after 30 seconds */
236 reconnect_source_id = g_timeout_add(30000,
237 timer_reconnect, NULL);
238 return;
239 }
240 #endif
242 screen_status_clear_message();
243 doupdate();
245 /* update immediately */
246 mpd->events = MPD_IDLE_ALL;
248 do_mpd_update();
250 auto_update_timer();
251 }
253 void
254 mpdclient_failed_callback(void)
255 {
256 assert(reconnect_source_id == 0);
258 /* try again in 5 seconds */
259 reconnect_source_id = g_timeout_add(5000,
260 timer_reconnect, NULL);
261 }
263 void
264 mpdclient_lost_callback(void)
265 {
266 assert(reconnect_source_id == 0);
268 screen_update(mpd);
270 reconnect_source_id = g_timeout_add(1000, timer_reconnect, NULL);
271 }
273 /**
274 * This function is called by the gidle.c library when MPD sends us an
275 * idle event (or when the connection dies).
276 */
277 void
278 mpdclient_idle_callback(gcc_unused enum mpd_idle events)
279 {
280 #ifndef NCMPC_MINI
281 if (options.enable_xterm_title)
282 update_xterm_title();
283 #endif
285 screen_update(mpd);
286 auto_update_timer();
287 }
289 static gboolean
290 timer_mpd_update(gcc_unused gpointer data)
291 {
292 do_mpd_update();
294 if (should_enable_update_timer())
295 return true;
296 else {
297 update_source_id = 0;
298 return false;
299 }
300 }
302 void begin_input_event(void)
303 {
304 }
306 void end_input_event(void)
307 {
308 screen_update(mpd);
309 mpd->events = 0;
311 mpdclient_put_connection(mpd);
312 check_reconnect();
313 auto_update_timer();
314 }
316 bool
317 do_input_event(command_t cmd)
318 {
319 if (cmd == CMD_QUIT) {
320 g_main_loop_quit(main_loop);
321 return false;
322 }
324 screen_cmd(mpd, cmd);
326 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
327 /* make sure we don't update the volume yet */
328 disable_update_timer();
330 return true;
331 }
333 #ifndef NCMPC_MINI
334 /**
335 * Check the configured key bindings for errors, and display a status
336 * message every 10 seconds.
337 */
338 static gboolean
339 timer_check_key_bindings(gcc_unused gpointer data)
340 {
341 char buf[256];
343 if (check_key_bindings(NULL, buf, sizeof(buf))) {
344 /* no error: disable this timer for the rest of this
345 process */
346 check_key_bindings_source_id = 0;
347 return FALSE;
348 }
350 #ifdef ENABLE_KEYDEF_SCREEN
351 g_strchomp(buf);
352 g_strlcat(buf, " (", sizeof(buf));
353 /* to translators: a key was bound twice in the key editor,
354 and this is a hint for the user what to press to correct
355 that */
356 char comment[64];
357 g_snprintf(comment, sizeof(comment), _("press %s for the key editor"),
358 get_key_names(CMD_SCREEN_KEYDEF, false));
359 g_strlcat(buf, comment, sizeof(buf));
360 g_strlcat(buf, ")", sizeof(buf));
361 #endif
363 screen_status_printf("%s", buf);
365 doupdate();
366 return TRUE;
367 }
368 #endif
370 int
371 main(int argc, const char *argv[])
372 {
373 #ifdef ENABLE_LOCALE
374 #ifndef ENABLE_NLS
375 gcc_unused
376 #endif
377 const char *charset = NULL;
378 /* time and date formatting */
379 setlocale(LC_TIME,"");
380 /* care about sorting order etc */
381 setlocale(LC_COLLATE,"");
382 /* charset */
383 setlocale(LC_CTYPE,"");
384 /* initialize charset conversions */
385 charset = charset_init();
387 /* initialize i18n support */
388 #endif
390 #ifdef ENABLE_NLS
391 setlocale(LC_MESSAGES, "");
392 bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
393 #ifdef ENABLE_LOCALE
394 bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
395 #endif
396 textdomain(GETTEXT_PACKAGE);
397 #endif
399 /* initialize options */
400 options_init();
402 /* parse command line options - 1 pass get configuration files */
403 options_parse(argc, argv);
405 #ifndef NCMPC_MINI
406 /* read configuration */
407 read_configuration();
409 /* check key bindings */
410 check_key_bindings(NULL, NULL, 0);
411 #endif
413 /* parse command line options - 2 pass */
414 options_parse(argc, argv);
416 ncu_init();
418 #ifdef ENABLE_LYRICS_SCREEN
419 lyrics_init();
420 #endif
422 /* create mpdclient instance */
423 mpd = mpdclient_new(options.host, options.port,
424 options.timeout_ms,
425 options.password);
427 /* initialize curses */
428 screen_init(mpd);
430 /* the main loop */
431 main_loop = g_main_loop_new(NULL, FALSE);
433 /* watch out for keyboard input */
434 keyboard_init();
436 /* watch out for lirc input */
437 ncmpc_lirc_init();
439 signals_init(main_loop, mpd);
441 /* attempt to connect */
442 reconnect_source_id = g_timeout_add(1, timer_reconnect, NULL);
444 auto_update_timer();
446 #ifndef NCMPC_MINI
447 check_key_bindings_source_id = g_timeout_add(10000, timer_check_key_bindings, NULL);
448 #endif
450 screen_paint(mpd);
452 g_main_loop_run(main_loop);
453 g_main_loop_unref(main_loop);
455 /* cleanup */
457 cancel_seek_timer();
459 disable_update_timer();
461 if (reconnect_source_id != 0)
462 g_source_remove(reconnect_source_id);
464 #ifndef NCMPC_MINI
465 if (check_key_bindings_source_id != 0)
466 g_source_remove(check_key_bindings_source_id);
467 #endif
469 signals_deinit();
470 ncmpc_lirc_deinit();
472 screen_exit();
473 #ifndef NCMPC_MINI
474 set_xterm_title("");
475 #endif
476 printf("\n");
478 mpdclient_free(mpd);
480 #ifdef ENABLE_LYRICS_SCREEN
481 lyrics_deinit();
482 #endif
484 ncu_deinit();
485 options_deinit();
487 return 0;
488 }