aboutsummaryrefslogtreecommitdiffstats
path: root/mpd-notification.c
blob: 3d3da4f89afc9fab07547037cab7f0a146e2c4b4 (about) (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
/*
 * (C) 2011-2018 by Christian Hesse <mail@eworm.de>
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 */

#include "mpd-notification.h"

const static char optstring[] = "hH:m:op:s:t:vV";
const static struct option options_long[] = {
	/* name		has_arg			flag	val */
	{ "help",	no_argument,		NULL,	'h' },
	{ "host",	required_argument,	NULL,	'H' },
	{ "music-dir",	required_argument,	NULL,	'm' },
	{ "oneline",	no_argument,		NULL,	'o' },
	{ "port",	required_argument,	NULL,	'p' },
	{ "scale",	required_argument,	NULL,	's' },
	{ "timeout",	required_argument,	NULL,	't' },
	{ "verbose",	no_argument,		NULL,	'v' },
	{ "version",	no_argument,		NULL,	'V' },
	{ "notification-file-workaround",
			no_argument,		NULL,	OPT_FILE_WORKAROUND },
	{ 0, 0, 0, 0 }
};

/* global variables */
char *program = NULL;
NotifyNotification * notification = NULL;
struct mpd_connection * conn = NULL;
uint8_t doexit = 0;
uint8_t verbose = 0;
uint8_t oneline = 0;
#ifdef HAVE_LIBAV
	magic_t magic = NULL;
#endif

/*** received_signal ***/
void received_signal(int signal) {
	GError * error = NULL;

	switch (signal) {
		case SIGINT:
		case SIGTERM:
			if (verbose > 0)
				printf("%s: Received signal %s, preparing exit.\n", program, strsignal(signal));

			doexit++;
			mpd_send_noidle(conn);
			break;

		case SIGHUP:
		case SIGUSR1:
			if (verbose > 0)
				printf("%s: Received signal %s, showing last notification again.\n", program, strsignal(signal));

			if (notify_notification_show(notification, &error) == FALSE) {
				g_printerr("%s: Error \"%s\" while trying to show notification again.\n", program, error->message);
				g_error_free(error);
			}
			break;
		default:
			fprintf(stderr, "%s: Reveived signal %s (%d), no idea what to do...\n", program, strsignal(signal), signal);
	}
}

/*** retrieve_artwork ***/
GdkPixbuf * retrieve_artwork(const char * music_dir, const char * uri) {
	GdkPixbuf * pixbuf = NULL;
	char * uri_path = NULL, * imagefile = NULL;
	DIR * dir;
	struct dirent * entry;
	regex_t regex;

#ifdef HAVE_LIBAV
	int i;
	const char *magic_mime;
	AVFormatContext * pFormatCtx = NULL;
	GdkPixbufLoader * loader;

	/* try album artwork first */
	if ((uri_path = malloc(strlen(music_dir) + strlen(uri) + 2)) == NULL) {
		fprintf(stderr, "%s: malloc() failed.\n", program);
		goto fail;
	}

	sprintf(uri_path, "%s/%s", music_dir, uri);

	if ((magic_mime = magic_file(magic, uri_path)) == NULL) {
		fprintf(stderr, "%s: We did not get a MIME type...\n", program);
		goto image;
	}

	if (verbose > 0)
		printf("%s: MIME type for %s is: %s\n", program, uri_path, magic_mime);

	if (strcmp(magic_mime, "audio/mpeg") != 0)
		goto image;

	if ((pFormatCtx = avformat_alloc_context()) == NULL) {
		fprintf(stderr, "%s: avformat_alloc_context() failed.\n", program);
		goto image;
	}

	if (avformat_open_input(&pFormatCtx, uri_path, NULL, NULL) != 0) {
		fprintf(stderr, "%s: avformat_open_input() failed.\n", program);
		goto image;
	}

	if (pFormatCtx->iformat->read_header(pFormatCtx) < 0) {
		fprintf(stderr, "%s: Could not read the format header.\n", program);
		goto image;
	}

	/* find the first attached picture, if available */
	for (i = 0; i < pFormatCtx->nb_streams; i++) {
		if (pFormatCtx->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC) {
			AVPacket pkt;

			if (verbose > 0)
				printf("%s: Found artwork in media file.\n", program);

			pkt = pFormatCtx->streams[i]->attached_pic;

			loader = gdk_pixbuf_loader_new();
			if (gdk_pixbuf_loader_write(loader, pkt.data, pkt.size, NULL) == FALSE) {
				fprintf(stderr, "%s: gdk_pixbuf_loader_write() failed parsing buffer.\n", program);
				goto image;
			}

			if ((pixbuf = gdk_pixbuf_loader_get_pixbuf(loader)) == NULL) {
				fprintf(stderr, "%s: gdk_pixbuf_loader_get_pixbuf() failed creating pixbuf.\n", program);
				goto image;
			}

			gdk_pixbuf_loader_close(loader, NULL);
			goto done;
		}
	}

image:
#endif

	/* cut the file name from path for current directory */
	*strrchr(uri_path, '/') = 0;

	if ((dir = opendir(uri_path)) == NULL) {
		fprintf(stderr, "%s: Could not open directory '%s': %s", program, uri_path, strerror(errno));
		goto fail;
	}

	if (regcomp(&regex, REGEX_ARTWORK, REG_NOSUB + REG_ICASE) != 0) {
		fprintf(stderr, "%s: Could not compile regex.\n", program);
		goto fail;
	}

	while ((entry = readdir(dir))) {
		if (*entry->d_name == '.')
			continue;

		if (regexec(&regex, entry->d_name, 0, NULL, 0) == 0) {
			if (verbose > 0)
				printf("%s: Found image file: %s\n", program, entry->d_name);

			if ((imagefile = malloc(strlen(uri_path) + strlen(entry->d_name) + 2)) == NULL) {
				fprintf(stderr, "%s: malloc() failed.\n", program);
				goto fail;
			}

			sprintf(imagefile, "%s/%s", uri_path, entry->d_name);

			if ((pixbuf = gdk_pixbuf_new_from_file(imagefile, NULL)) == NULL) {
				fprintf(stderr, "%s: gdk_pixbuf_new_from_file() failed loading file: %s\n",
						program, imagefile);
				goto fail;
			}

			free(imagefile);
			break;
		}
	}

	regfree(&regex);
	closedir(dir);

fail:
#ifdef HAVE_LIBAV
done:
	if (pFormatCtx != NULL) {
		avformat_close_input(&pFormatCtx);
		avformat_free_context(pFormatCtx);
	}
#endif

	free(uri_path);

	return pixbuf;
}

/*** append_string ***/
char * append_string(char * string, const char * format, const char delim, const char * s) {
	char * tmp, * offset;

	tmp = g_markup_escape_text(s, -1);

	string = realloc(string, strlen(string) + strlen(format) + strlen(tmp) + 2 /* delim + line break */);

	offset = string + strlen(string);

	if (delim > 0) {
		*offset = delim;
		offset++;
	}

	sprintf(offset, format, tmp);

	free(tmp);

	return string;
}

/*** main ***/
int main(int argc, char ** argv) {
	dictionary * ini = NULL;
	const char * title = NULL, * artist = NULL, * album = NULL;
	char * notifystr = NULL;
	GdkPixbuf * pixbuf = NULL;
	GError * error = NULL;
	unsigned short int errcount = 0, state = MPD_STATE_UNKNOWN;
	const char * mpd_host, * mpd_port_str, * music_dir, * uri = NULL;
	unsigned mpd_port = MPD_PORT, mpd_timeout = MPD_TIMEOUT, notification_timeout = NOTIFICATION_TIMEOUT;
	struct mpd_song * song = NULL;
	unsigned int i, version = 0, help = 0, scale = 0, file_workaround = 0;
	int rc = EXIT_FAILURE;

	program = argv[0];

	if ((mpd_host = getenv("MPD_HOST")) == NULL)
		mpd_host = MPD_HOST;

	if ((mpd_port_str = getenv("MPD_PORT")) == NULL)
		mpd_port = MPD_PORT;
	else
		mpd_port = atoi(mpd_port_str);

	music_dir = getenv("XDG_MUSIC_DIR");

	/* parse config file */
	if (chdir(getenv("HOME")) == 0 && access(".config/mpd-notification.conf", R_OK) == 0 &&
			(ini = iniparser_load(".config/mpd-notification.conf")) != NULL) {
		file_workaround = iniparser_getboolean(ini, ":notification-file-workaround", file_workaround);
		mpd_host = iniparser_getstring(ini, ":host", mpd_host);
		mpd_port = iniparser_getint(ini, ":port", mpd_port);
		music_dir = iniparser_getstring(ini, ":music-dir", music_dir);
		notification_timeout = iniparser_getint(ini, ":timeout", notification_timeout);
		oneline = iniparser_getboolean(ini, ":oneline", oneline);
		scale = iniparser_getint(ini, ":scale", scale);
	}

	/* get the verbose status */
	while ((i = getopt_long(argc, argv, optstring, options_long, NULL)) != -1) {
		switch (i) {
			case 'h':
				help++;
				break;
			case 'o':
				oneline++;
				break;
			case 'v':
				verbose++;
				break;
			case 'V':
				verbose++;
				version++;
				break;
		}
	}

	/* reinitialize getopt() by resetting optind to 0 */
	optind = 0;

	/* say hello */
	if (verbose > 0)
		printf("%s: %s v%s"
#ifdef HAVE_SYSTEMD
			" +systemd"
#endif
#ifdef HAVE_LIBAV
			" +libav"
#endif
			" (compiled: " __DATE__ ", " __TIME__ ")\n", program, PROGNAME, VERSION);

	if (help > 0)
		fprintf(stderr, "usage: %s [-h] [-H HOST] [-m MUSIC-DIR] [-o] [-p PORT] [-s PIXELS] [-t TIMEOUT] [-v] [-V]\n", program);

	if (version > 0 || help > 0)
		return EXIT_SUCCESS;

	/* get command line options */
	while ((i = getopt_long(argc, argv, optstring, options_long, NULL)) != -1) {
		switch (i) {
			case 'p':
				mpd_port = atoi(optarg);
				if (verbose > 0)
					printf("%s: using port %d\n", program, mpd_port);
				break;
			case 'm':
				music_dir = optarg;
				if (verbose > 0)
					printf("%s: using music-dir %s\n", program, music_dir);
				break;
			case 'H':
				mpd_host = optarg;
				if (verbose > 0)
					printf("%s: using host %s\n", program, mpd_host);
				break;
			case 's':
				scale = atof(optarg);
				break;
			case 't':
				notification_timeout = atof(optarg);
				if (verbose > 0)
					printf("%s: using notification-timeout %d\n", program, notification_timeout);
				break;
			case OPT_FILE_WORKAROUND:
				file_workaround++;
				break;
		}
	}

	/* change directory to music base directory */
	if (music_dir != NULL) {
		if (chdir(music_dir) == -1) {
			fprintf(stderr, "%s: Could not change directory to: %s\n", program, music_dir);
			music_dir = NULL;
		}
	}

#ifdef HAVE_LIBAV
	/* libav */
	av_register_all();

	/* only fatal messages from libav */
	if (verbose == 0)
		av_log_set_level(AV_LOG_FATAL);

	if ((magic = magic_open(MAGIC_MIME_TYPE)) == NULL) {
		fprintf(stderr, "%s: Could not initialize magic library.\n", program);
		goto out40;
	}

	if (magic_load(magic, NULL) != 0) {
		fprintf(stderr, "%s: Could not load magic database: %s\n", program, magic_error(magic));
		magic_close(magic);
		goto out30;
	}
#endif

	conn = mpd_connection_new(mpd_host, mpd_port, mpd_timeout * 1000);

	if (mpd_connection_get_error(conn) != MPD_ERROR_SUCCESS) {
		fprintf(stderr,"%s: %s\n", program, mpd_connection_get_error_message(conn));
		goto out30;
	}

	if (notify_init(PROGNAME) == FALSE) {
		fprintf(stderr, "%s: Could not initialize notify.\n", program);
		goto out20;
	}

	notification =
#		if NOTIFY_CHECK_VERSION(0, 7, 0)
		notify_notification_new(TEXT_TOPIC, TEXT_NONE, ICON_AUDIO_X_GENERIC);
#		else
		notify_notification_new(TEXT_TOPIC, TEXT_NONE, ICON_AUDIO_X_GENERIC, NULL);
#		endif
	notify_notification_set_category(notification, PROGNAME);
	notify_notification_set_urgency (notification, NOTIFY_URGENCY_NORMAL);

	signal(SIGHUP, received_signal);
	signal(SIGINT, received_signal);
	signal(SIGTERM, received_signal);
	signal(SIGUSR1, received_signal);

	/* report ready to systemd */
#ifdef HAVE_SYSTEMD
	sd_notify(0, "READY=1\nSTATUS=Waiting for mpd event...");
#endif

	while (doexit == 0 && mpd_run_idle_mask(conn, MPD_IDLE_PLAYER)) {
		mpd_command_list_begin(conn, true);
		mpd_send_status(conn);
		mpd_send_current_song(conn);
		mpd_command_list_end(conn);

		state = mpd_status_get_state(mpd_recv_status(conn));
		if (state == MPD_STATE_PLAY) {
			mpd_response_next(conn);

			song = mpd_recv_song(conn);

			title = mpd_song_get_tag(song, MPD_TAG_TITLE, 0);

			/* ignore if we have no title */
			if (title == NULL)
				goto nonotification;

#ifdef HAVE_SYSTEMD
			sd_notifyf(0, "READY=1\nSTATUS=Playing: %s", title);
#endif

			/* initial allocation and string termination */
			notifystr = strdup("");

			notifystr = append_string(notifystr, TEXT_PLAY_TITLE, 0, title);

			if ((artist = mpd_song_get_tag(song, MPD_TAG_ARTIST, 0)) != NULL)
				notifystr = append_string(notifystr, TEXT_PLAY_ARTIST, oneline ? ' ' : '\n', artist);

			if ((album = mpd_song_get_tag(song, MPD_TAG_ALBUM, 0)) != NULL)
				notifystr = append_string(notifystr, TEXT_PLAY_ALBUM, oneline ? ' ' : '\n', album);

			uri = mpd_song_get_uri(song);

			if (music_dir != NULL && uri != NULL) {
				GdkPixbuf * copy;

				pixbuf = retrieve_artwork(music_dir, uri);

				if (pixbuf != NULL && scale > 0) {
					int x, y;

					x = gdk_pixbuf_get_width(pixbuf);
					y = gdk_pixbuf_get_height(pixbuf);

					if ((copy = gdk_pixbuf_scale_simple (pixbuf,
							(x > y ? scale : scale * x / y),
							(y > x ? scale : scale * y / x),
							GDK_INTERP_BILINEAR)) != NULL) {
						g_object_unref(pixbuf);
						pixbuf = copy;
					}
				}


			}

			mpd_song_free(song);
		} else if (state == MPD_STATE_PAUSE) {
			notifystr = strdup(TEXT_PAUSE);
#ifdef HAVE_SYSTEMD
			sd_notify(0, "READY=1\nSTATUS=" TEXT_PAUSE);
#endif
		} else if (state == MPD_STATE_STOP) {
			notifystr = strdup(TEXT_STOP);
#ifdef HAVE_SYSTEMD
			sd_notify(0, "READY=1\nSTATUS=" TEXT_STOP);
#endif
		} else
			notifystr = strdup(TEXT_UNKNOWN);

		if (verbose > 0)
			printf("%s: %s\n", program, notifystr);

		/* Some notification daemons do not support handing pixbuf data. Write a PNG
		 * file and give the path. */
		if (file_workaround > 0 && pixbuf != NULL) {
			gdk_pixbuf_save(pixbuf, "/tmp/.mpd-notification-artwork.png", "png", NULL, NULL);

			notify_notification_update(notification, TEXT_TOPIC, notifystr, "/tmp/.mpd-notification-artwork.png");
		} else
			notify_notification_update(notification, TEXT_TOPIC, notifystr, ICON_AUDIO_X_GENERIC);

		/* Call this unconditionally! When pixbuf is NULL this clears old image. */
		notify_notification_set_image_from_pixbuf(notification, pixbuf);

		notify_notification_set_timeout(notification, notification_timeout * 1000);

		while(notify_notification_show(notification, &error) == FALSE) {
			if (errcount > 1) {
				fprintf(stderr, "%s: Looks like we can not reconnect to notification daemon... Exiting.\n", program);
				goto out10;
			} else {
				g_printerr("%s: Error \"%s\" while trying to show notification. Trying to reconnect.\n", program, error->message);
				errcount++;

				g_error_free(error);
				error = NULL;

				notify_uninit();

				usleep(500 * 1000);

				if(notify_init(PROGNAME) == FALSE) {
					fprintf(stderr, "%s: Could not initialize notify.\n", program);
					goto out10;
				}
			}
		}
		errcount = 0;

nonotification:
		if (notifystr != NULL) {
			free(notifystr);
			notifystr = NULL;
		}
		if (pixbuf != NULL) {
			g_object_unref(pixbuf);
			pixbuf = NULL;
		}
		mpd_response_finish(conn);
	}

	if (verbose > 0)
		printf("%s: Exiting...\n", program);

	/* report stopping to systemd */
#ifdef HAVE_SYSTEMD
	sd_notify(0, "STOPPING=1\nSTATUS=Stopping...");
#endif

	rc = EXIT_SUCCESS;

out10:
	g_object_unref(G_OBJECT(notification));
	notify_uninit();

out20:
	if (conn != NULL)
		mpd_connection_free(conn);

out30:
#ifdef HAVE_LIBAV
	if (magic != NULL)
		magic_close(magic);
out40:
#endif

	if (ini != NULL)
		iniparser_freedict(ini);

#ifdef HAVE_SYSTEMD
	sd_notify(0, "STATUS=Stopped. Bye!");
#endif

	return rc;
}