/*
* (C) 2011-2024 by Christian Hesse <mail@eworm.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#include "mpd-notification.h"
const static char optstring[] = "hH:m:p: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' },
{ "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;
#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);
/* Are there more mime-types supporting embedded artwork? Tell me! */
if (strcmp(magic_mime, "audio/mp4") != 0 &&
strcmp(magic_mime, "audio/mpeg") != 0 &&
strcmp(magic_mime, "audio/x-m4a") != 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;
}
/* 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;
}
}
if (pixbuf == NULL && verbose > 0)
printf("%s: No artwork in media file.\n", program);
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(®ex, 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(®ex, 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(®ex);
closedir(dir);
fail:
#ifdef HAVE_LIBAV
done:
if (pFormatCtx != NULL) {
avformat_close_input(&pFormatCtx);
avformat_free_context(pFormatCtx);
}
#endif
free(uri_path);
return pixbuf;
}
/*** format_text ***/
char * format_text(const char* format, const char* title, const char* artist, const char* album, unsigned int duration) {
char * formatted, * tmp = NULL;
size_t len;
if (format == NULL || strlen(format) == 0)
return NULL;
formatted = strdup("");
len = 0;
do {
if (*format == '%') {
format++;
switch (*format) {
case 'a':
tmp = g_markup_escape_text(artist, -1);
break;
case 'A':
tmp = g_markup_escape_text(album, -1);
break;
case 'd':
size_t size;
size = snprintf(tmp, 0, "%d:%02d", duration / 60, duration % 60) + 1;
tmp = malloc(size);
snprintf(tmp, size, "%d:%02d", duration / 60, duration % 60);
break;
case 't':
tmp = g_markup_escape_text(title, -1);
break;
default:
formatted = realloc(formatted, len + 2);
sprintf(formatted + len, "%%");
format--;
break;
}
if (tmp != NULL) {
formatted = realloc(formatted, len + strlen(tmp) + 1);
sprintf(formatted + len, "%s", tmp);
free(tmp);
tmp = NULL;
}
} else if (*format == '\\') {
format++;
formatted = realloc(formatted, len + 2);
if (*format == 'n') {
sprintf(formatted + len, "\n");
} else {
sprintf(formatted + len, "\\");
format--;
}
} else {
formatted = realloc(formatted, len + 2);
sprintf(formatted + len, "%c", *format);
}
len = strlen(formatted);
} while (*format++);
return formatted;
}
/*** 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;
enum mpd_state state = MPD_STATE_UNKNOWN, last_state = MPD_STATE_UNKNOWN;
const char * mpd_host, * mpd_port_str, * music_dir, * text_topic = TEXT_TOPIC,
* text_play = TEXT_PLAY, * text_pause = TEXT_PAUSE, * text_stop = TEXT_STOP, * 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, duration;
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("XDG_CONFIG_HOME")) == 0 && access("mpd-notification.conf", R_OK) == 0) {
ini = iniparser_load("mpd-notification.conf");
} else if (chdir(getenv("HOME")) == 0 && access(".config/mpd-notification.conf", R_OK) == 0) {
ini = iniparser_load(".config/mpd-notification.conf");
}
if (ini != 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);
scale = iniparser_getint(ini, ":scale", scale);
text_topic = iniparser_getstring(ini, ":text-topic", text_topic);
text_play = iniparser_getstring(ini, ":text-play", text_play);
text_pause = iniparser_getstring(ini, ":text-pause", text_pause);
text_stop = iniparser_getstring(ini, ":text-stop", text_stop);
}
/* get the verbose status */
while ((i = getopt_long(argc, argv, optstring, options_long, NULL)) != -1) {
switch (i) {
case 'h':
help++;
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] [-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 */
#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58, 9, 100)
av_register_all();
#endif
/* 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);
notify_notification_set_timeout(notification, notification_timeout * 1000);
struct sigaction act = { 0 };
act.sa_handler = received_signal;
sigaction(SIGHUP, &act, NULL);
sigaction(SIGINT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
sigaction(SIGUSR1, &act, NULL);
/* 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 || state == MPD_STATE_PAUSE) {
/* There's a bug in libnotify where the server spec version is fetched
* too late, which results in issue with image date. Make sure to
* show a notification without image data (just generic icon) first. */
if (last_state != MPD_STATE_PLAY && last_state != MPD_STATE_PAUSE) {
notify_notification_update(notification, text_topic, "Starting playback...", ICON_AUDIO_X_GENERIC);
notify_notification_show(notification, NULL);
}
mpd_response_next(conn);
song = mpd_recv_song(conn);
title = mpd_song_get_tag(song, MPD_TAG_TITLE, 0);
artist = mpd_song_get_tag(song, MPD_TAG_ARTIST, 0);
album = mpd_song_get_tag(song, MPD_TAG_ALBUM, 0);
duration = mpd_song_get_duration(song);
/* ignore if we have no title */
if (title == NULL)
goto nonotification;
#ifdef HAVE_SYSTEMD
sd_notifyf(0, "READY=1\nSTATUS=%s: %s", state == MPD_STATE_PLAY ? "Playing" : "Paused", title);
#endif
/* get the formatted notification string */
notifystr = format_text(state == MPD_STATE_PLAY ? text_play : text_pause,
title, artist ? artist : "unknown artist", album ? album : "unknown album", duration);
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_STOP) {
notifystr = strdup(text_stop);
#ifdef HAVE_SYSTEMD
sd_notifyf(0, "READY=1\nSTATUS=%s", text_stop);
#endif
} else
notifystr = strdup(TEXT_UNKNOWN);
last_state = state;
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);
if (notify_notification_show(notification, &error) == FALSE) {
g_printerr("%s: Error showing notification: %s\n", program, error->message);
g_error_free(error);
goto out10;
}
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;
}