/* * Copyright (C) 2016 Christian Meffert * * 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 2 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifdef HAVE_CONFIG_H # include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "artwork.h" #include "commands.h" #include "conffile.h" #include "db.h" #include "library.h" #include "listener.h" #include "logger.h" #include "misc.h" #include "player.h" #include "remote_pairing.h" enum mpd_type { MPD_TYPE_INT, MPD_TYPE_STRING, MPD_TYPE_SPECIAL, }; #define MPD_ALL_IDLE_LISTENER_EVENTS (LISTENER_PLAYER | LISTENER_QUEUE | LISTENER_VOLUME | LISTENER_SPEAKER | LISTENER_OPTIONS | LISTENER_DATABASE | LISTENER_UPDATE | LISTENER_STORED_PLAYLIST | LISTENER_RATING) #define MPD_RATING_FACTOR 10.0 static pthread_t tid_mpd; static struct event_base *evbase_mpd; static struct commands_base *cmdbase; static struct evhttp *evhttpd; static struct evconnlistener *mpd_listener; static int mpd_sockfd; // Virtual path to the default playlist directory static char *default_pl_dir; static bool allow_modifying_stored_playlists; #define COMMAND_ARGV_MAX 37 /* MPD error codes (taken from ack.h) */ enum ack { ACK_ERROR_NOT_LIST = 1, ACK_ERROR_ARG = 2, ACK_ERROR_PASSWORD = 3, ACK_ERROR_PERMISSION = 4, ACK_ERROR_UNKNOWN = 5, ACK_ERROR_NO_EXIST = 50, ACK_ERROR_PLAYLIST_MAX = 51, ACK_ERROR_SYSTEM = 52, ACK_ERROR_PLAYLIST_LOAD = 53, ACK_ERROR_UPDATE_ALREADY = 54, ACK_ERROR_PLAYER_SYNC = 55, ACK_ERROR_EXIST = 56, }; enum command_list_type { COMMAND_LIST = 1, COMMAND_LIST_OK = 2, COMMAND_LIST_END = 3, COMMAND_LIST_NONE = 4 }; /** * This lists for ffmpeg suffixes and mime types are taken from the ffmpeg decoder plugin from mpd * (FfmpegDecoderPlugin.cxx, git revision 9fb351a139a56fc7b1ece549894f8fc31fa887cd). * * The server does not support different decoders and always uses ffmpeg or libav for decoding. * Some clients rely on a response for the decoder commands (e.g. ncmpccp) therefor return something * valid for this command. */ static const char * const ffmpeg_suffixes[] = { "16sv", "3g2", "3gp", "4xm", "8svx", "aa3", "aac", "ac3", "afc", "aif", "aifc", "aiff", "al", "alaw", "amr", "anim", "apc", "ape", "asf", "atrac", "au", "aud", "avi", "avm2", "avs", "bap", "bfi", "c93", "cak", "cin", "cmv", "cpk", "daud", "dct", "divx", "dts", "dv", "dvd", "dxa", "eac3", "film", "flac", "flc", "fli", "fll", "flx", "flv", "g726", "gsm", "gxf", "iss", "m1v", "m2v", "m2t", "m2ts", "m4a", "m4b", "m4v", "mad", "mj2", "mjpeg", "mjpg", "mka", "mkv", "mlp", "mm", "mmf", "mov", "mp+", "mp1", "mp2", "mp3", "mp4", "mpc", "mpeg", "mpg", "mpga", "mpp", "mpu", "mve", "mvi", "mxf", "nc", "nsv", "nut", "nuv", "oga", "ogm", "ogv", "ogx", "oma", "ogg", "omg", "psp", "pva", "qcp", "qt", "r3d", "ra", "ram", "rl2", "rm", "rmvb", "roq", "rpl", "rvc", "shn", "smk", "snd", "sol", "son", "spx", "str", "swf", "tgi", "tgq", "tgv", "thp", "ts", "tsp", "tta", "xa", "xvid", "uv", "uv2", "vb", "vid", "vob", "voc", "vp6", "vmd", "wav", "webm", "wma", "wmv", "wsaud", "wsvga", "wv", "wve", NULL }; static const char * const ffmpeg_mime_types[] = { "application/flv", "application/m4a", "application/mp4", "application/octet-stream", "application/ogg", "application/x-ms-wmz", "application/x-ms-wmd", "application/x-ogg", "application/x-shockwave-flash", "application/x-shorten", "audio/8svx", "audio/16sv", "audio/aac", "audio/ac3", "audio/aiff", "audio/amr", "audio/basic", "audio/flac", "audio/m4a", "audio/mp4", "audio/mpeg", "audio/musepack", "audio/ogg", "audio/qcelp", "audio/vorbis", "audio/vorbis+ogg", "audio/x-8svx", "audio/x-16sv", "audio/x-aac", "audio/x-ac3", "audio/x-aiff", "audio/x-alaw", "audio/x-au", "audio/x-dca", "audio/x-eac3", "audio/x-flac", "audio/x-gsm", "audio/x-mace", "audio/x-matroska", "audio/x-monkeys-audio", "audio/x-mpeg", "audio/x-ms-wma", "audio/x-ms-wax", "audio/x-musepack", "audio/x-ogg", "audio/x-vorbis", "audio/x-vorbis+ogg", "audio/x-pn-realaudio", "audio/x-pn-multirate-realaudio", "audio/x-speex", "audio/x-tta", "audio/x-voc", "audio/x-wav", "audio/x-wma", "audio/x-wv", "video/anim", "video/quicktime", "video/msvideo", "video/ogg", "video/theora", "video/webm", "video/x-dv", "video/x-flv", "video/x-matroska", "video/x-mjpeg", "video/x-mpeg", "video/x-ms-asf", "video/x-msvideo", "video/x-ms-wmv", "video/x-ms-wvx", "video/x-ms-wm", "video/x-ms-wmx", "video/x-nut", "video/x-pva", "video/x-theora", "video/x-vid", "video/x-wmv", "video/x-xvid", /* special value for the "ffmpeg" input plugin: all streams by the "ffmpeg" input plugin shall be decoded by this plugin */ "audio/x-mpd-ffmpeg", NULL }; struct mpd_tagtype { char *tag; char *field; char *sort_field; char *group_field; enum mpd_type type; ssize_t mfi_offset; /* * This allows omitting the "group" fields in the created group by clause to improve * performance in the "list" command. For example listing albums and artists already * groups by their persistent id, an additional group clause by artist/album will * decrease performance of the select query and will in general not change the result * (e. g. album persistent id is generated by artist and album and listing albums * grouped by artist is therefor not necessary). */ bool group_in_listcommand; }; static struct mpd_tagtype tagtypes[] = { /* tag | db field | db sort field | db group field | type | media_file offset | group_in_listcommand */ // We treat the artist tag as album artist, this allows grouping over the artist-persistent-id index and increases performance // { "Artist", "f.artist", "f.artist", "f.artist", MPD_TYPE_STRING, dbmfi_offsetof(artist), }, { "Artist", "f.album_artist", "f.album_artist_sort, f.album_artist", "f.songartistid", MPD_TYPE_STRING, dbmfi_offsetof(album_artist), false, }, { "ArtistSort", "f.album_artist_sort", "f.album_artist_sort, f.album_artist", "f.songartistid", MPD_TYPE_STRING, dbmfi_offsetof(album_artist_sort), false, }, { "AlbumArtist", "f.album_artist", "f.album_artist_sort, f.album_artist", "f.songartistid", MPD_TYPE_STRING, dbmfi_offsetof(album_artist), false, }, { "AlbumArtistSort", "f.album_artist_sort", "f.album_artist_sort, f.album_artist", "f.songartistid", MPD_TYPE_STRING, dbmfi_offsetof(album_artist_sort), false, }, { "Album", "f.album", "f.album_sort, f.album", "f.songalbumid", MPD_TYPE_STRING, dbmfi_offsetof(album), false, }, { "Title", "f.title", "f.title", "f.title", MPD_TYPE_STRING, dbmfi_offsetof(title), true, }, { "Track", "f.track", "f.track", "f.track", MPD_TYPE_INT, dbmfi_offsetof(track), true, }, { "Genre", "f.genre", "f.genre", "f.genre", MPD_TYPE_STRING, dbmfi_offsetof(genre), true, }, { "Disc", "f.disc", "f.disc", "f.disc", MPD_TYPE_INT, dbmfi_offsetof(disc), true, }, { "Date", "f.year", "f.year", "f.year", MPD_TYPE_INT, dbmfi_offsetof(year), true, }, { "file", NULL, NULL, NULL, MPD_TYPE_SPECIAL, -1, true, }, { "base", NULL, NULL, NULL, MPD_TYPE_SPECIAL, -1, true, }, { "any", NULL, NULL, NULL, MPD_TYPE_SPECIAL, -1, true, }, { "modified-since", NULL, NULL, NULL, MPD_TYPE_SPECIAL, -1, true, }, }; static struct mpd_tagtype * find_tagtype(const char *tag) { int i; if (!tag) return 0; for (i = 0; i < ARRAY_SIZE(tagtypes); i++) { if (strcasecmp(tag, tagtypes[i].tag) == 0) return &tagtypes[i]; } return NULL; } /* * MPD client connection data */ struct mpd_client_ctx { // True if the connection is already authenticated or does not need authentication bool authenticated; // The events the client needs to be notified of short events; // True if the client is waiting for idle events bool is_idle; // The events the client is waiting for (set by the idle command) short idle_events; // The output buffer for the client (used to send data to the client) struct evbuffer *evbuffer; struct mpd_client_ctx *next; }; // List of all connected mpd clients struct mpd_client_ctx *mpd_clients; static void free_mpd_client_ctx(void *ctx) { struct mpd_client_ctx *client_ctx = ctx; struct mpd_client_ctx *client; struct mpd_client_ctx *prev; if (!client_ctx) return; client = mpd_clients; prev = NULL; while (client) { if (client == client_ctx) { DPRINTF(E_DBG, L_MPD, "Removing mpd client\n"); if (prev) prev->next = client->next; else mpd_clients = client->next; break; } prev = client; client = client->next; } free(client_ctx); } struct output { unsigned short shortid; uint64_t id; char *name; unsigned selected; }; struct output_get_param { unsigned short shortid; struct output *output; }; static void free_output(struct output *output) { if (output) { free(output->name); free(output); } } /* * Creates a new string for the given path that starts with a '/'. * If 'path' already starts with a '/' the returned string is a duplicate * of 'path'. * * The returned string needs to be freed by the caller. */ static char * prepend_slash(const char *path) { char *result; if (path[0] == '/') result = strdup(path); else result = safe_asprintf("/%s", path); return result; } /* Thread: mpd */ static void * mpd(void *arg) { int ret; ret = db_perthread_init(); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error: DB init failed\n"); pthread_exit(NULL); } event_base_dispatch(evbase_mpd); db_perthread_deinit(); pthread_exit(NULL); } static void mpd_time(char *buffer, size_t bufferlen, time_t t) { struct tm tm; const struct tm *tm2 = gmtime_r(&t, &tm); if (tm2 == NULL) return; strftime(buffer, bufferlen, "%FT%TZ", tm2); } /* * Parses a rage argument of the form START:END (the END item is not included in the range) * into its start and end position. * * @param range the range argument * @param start_pos set by this method to the start position * @param end_pos set by this method to the end postion * @return 0 on success, -1 on failure */ static int mpd_pars_range_arg(char *range, int *start_pos, int *end_pos) { int ret; if (strchr(range, ':')) { ret = sscanf(range, "%d:%d", start_pos, end_pos); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error parsing range argument '%s' (return code = %d)\n", range, ret); return -1; } } else { ret = safe_atoi32(range, start_pos); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error parsing integer argument '%s' (return code = %d)\n", range, ret); return -1; } *end_pos = (*start_pos) + 1; } return 0; } /* * Returns the next unquoted string argument from the input string */ static char* mpd_pars_unquoted(char **input) { char *arg; arg = *input; while (**input != 0) { if (**input == ' ') { **input = '\0'; (*input)++; return arg; } (*input)++; } return arg; } /* * Returns the next quoted string argument from the input string * with the quotes removed */ static char* mpd_pars_quoted(char **input) { char *arg; char *src; char *dst; char ch; // skip double quote character (*input)++; src = dst = arg = *input; while ((ch = *src) != '"') { // A backslash character escapes the following character and should be removed if (ch == '\\') { ch = *(++src); } *dst++ = ch; if (ch == 0) { // Error handling for missing double quote at end of parameter DPRINTF(E_LOG, L_MPD, "Error missing closing double quote in argument\n"); *input = src; return NULL; } ++src; } *dst = '\0'; *input = ++src; return arg; } /* * Parses the argument string into an array of strings. * Arguments are seperated by a whitespace character and may be wrapped in double quotes. * * @param args the arguments * @param argc the number of arguments in the argument string * @param argv the array containing the found arguments */ static int mpd_parse_args(char *args, int *argc, char **argv) { char *input; input = args; *argc = 0; while (*input != 0) { // Ignore whitespace characters if (*input == ' ') { input++; continue; } // Check if the parameter is wrapped in double quotes if (*input == '"') { argv[*argc] = mpd_pars_quoted(&input); if (argv[*argc] == NULL) { return -1; } *argc = *argc + 1; } else { argv[*argc] = mpd_pars_unquoted(&input); *argc = *argc + 1; } } return 0; } /* * Adds the informations (path, id, tags, etc.) for the given song to the given buffer * with additional information for the position of this song in the playqueue. * * Example output: * file: foo/bar/song.mp3 * Last-Modified: 2013-07-14T06:57:59Z * Time: 172 * Artist: foo * AlbumArtist: foo * ArtistSort: foo * AlbumArtistSort: foo * Title: song * Album: bar * Track: 1/11 * Date: 2012-09-11 * Genre: Alternative * Disc: 1/1 * MUSICBRAINZ_ALBUMARTISTID: c5c2ea1c-4bde-4f4d-bd0b-47b200bf99d6 * MUSICBRAINZ_ARTISTID: c5c2ea1c-4bde-4f4d-bd0b-47b200bf99d6 * MUSICBRAINZ_ALBUMID: 812f4b87-8ad9-41bd-be79-38151f17a2b4 * MUSICBRAINZ_TRACKID: fde95c39-ee51-48f6-a7f9-b5631c2ed156 * Pos: 0 * Id: 1 * * @param evbuf the response event buffer * @param queue_item queue item information * @return the number of bytes added if successful, or -1 if an error occurred. */ static int mpd_add_db_queue_item(struct evbuffer *evbuf, struct db_queue_item *queue_item) { char modified[32]; int ret; mpd_time(modified, sizeof(modified), queue_item->time_modified); ret = evbuffer_add_printf(evbuf, "file: %s\n" "Last-Modified: %s\n" "Time: %d\n" "Artist: %s\n" "AlbumArtist: %s\n" "ArtistSort: %s\n" "AlbumArtistSort: %s\n" "Album: %s\n" "Title: %s\n" "Track: %d\n" "Date: %d\n" "Genre: %s\n" "Disc: %d\n" "Pos: %d\n" "Id: %d\n", (queue_item->virtual_path + 1), modified, (queue_item->song_length / 1000), queue_item->artist, queue_item->album_artist, queue_item->artist_sort, queue_item->album_artist_sort, queue_item->album, queue_item->title, queue_item->track, queue_item->year, queue_item->genre, queue_item->disc, queue_item->pos, queue_item->id); return ret; } /* * Adds the informations (path, id, tags, etc.) for the given song to the given buffer. * * Example output: * file: foo/bar/song.mp3 * Last-Modified: 2013-07-14T06:57:59Z * Time: 172 * Artist: foo * AlbumArtist: foo * ArtistSort: foo * AlbumArtistSort: foo * Title: song * Album: bar * Track: 1/11 * Date: 2012-09-11 * Genre: Alternative * Disc: 1/1 * MUSICBRAINZ_ALBUMARTISTID: c5c2ea1c-4bde-4f4d-bd0b-47b200bf99d6 * MUSICBRAINZ_ARTISTID: c5c2ea1c-4bde-4f4d-bd0b-47b200bf99d6 * MUSICBRAINZ_ALBUMID: 812f4b87-8ad9-41bd-be79-38151f17a2b4 * MUSICBRAINZ_TRACKID: fde95c39-ee51-48f6-a7f9-b5631c2ed156 * * @param evbuf the response event buffer * @param mfi media information * @return the number of bytes added if successful, or -1 if an error occurred. */ static int mpd_add_db_media_file_info(struct evbuffer *evbuf, struct db_media_file_info *dbmfi) { char modified[32]; uint32_t time_modified; uint32_t songlength; int ret; if (safe_atou32(dbmfi->time_modified, &time_modified) != 0) { DPRINTF(E_LOG, L_MPD, "Error converting time modified to uint32_t: %s\n", dbmfi->time_modified); return -1; } mpd_time(modified, sizeof(modified), time_modified); if (safe_atou32(dbmfi->song_length, &songlength) != 0) { DPRINTF(E_LOG, L_MPD, "Error converting song length to uint32_t: %s\n", dbmfi->song_length); return -1; } ret = evbuffer_add_printf(evbuf, "file: %s\n" "Last-Modified: %s\n" "Time: %d\n" "duration: %.3f\n" "Artist: %s\n" "AlbumArtist: %s\n" "ArtistSort: %s\n" "AlbumArtistSort: %s\n" "Album: %s\n" "Title: %s\n" "Track: %s\n" "Date: %s\n" "Genre: %s\n" "Disc: %s\n", (dbmfi->virtual_path + 1), modified, (songlength / 1000), ((float) songlength / 1000), dbmfi->artist, dbmfi->album_artist, dbmfi->artist_sort, dbmfi->album_artist_sort, dbmfi->album, dbmfi->title, dbmfi->track, dbmfi->year, dbmfi->genre, dbmfi->disc); return ret; } static void append_string(char **a, const char *b, const char *separator) { char *temp; if (*a) temp = db_mprintf("%s%s%s", *a, (separator ? separator : ""), b); else temp = db_mprintf("%s", b); free(*a); *a = temp; } /* * Sets the filter (where clause) and the window (limit clause) in the given query_params * based on the given arguments * * @param argc Number of arguments in argv * @param argv Pointer to the first filter parameter * @param exact_match If true, creates filter for exact matches (e. g. find command) otherwise matches substrings (e. g. search command) * @param qp Query parameters */ static int parse_filter_window_params(int argc, char **argv, bool exact_match, struct query_params *qp) { struct mpd_tagtype *tagtype; char *c1; int start_pos; int end_pos; int i; uint32_t num; int ret; c1 = NULL; for (i = 0; i < argc; i += 2) { // End of filter key/value pairs reached, if keywords "window" or "group" found if (0 == strcasecmp(argv[i], "window") || 0 == strcasecmp(argv[i], "group")) break; // Process filter key/value pair if ((i + 1) < argc) { tagtype = find_tagtype(argv[i]); if (!tagtype) { DPRINTF(E_WARN, L_MPD, "Parameter '%s' is not supported and will be ignored\n", argv[i]); continue; } if (tagtype->type == MPD_TYPE_STRING) { if (exact_match) c1 = db_mprintf("(%s = '%q')", tagtype->field, argv[i + 1]); else c1 = db_mprintf("(%s LIKE '%%%q%%')", tagtype->field, argv[i + 1]); } else if (tagtype->type == MPD_TYPE_INT) { ret = safe_atou32(argv[i + 1], &num); if (ret < 0) DPRINTF(E_WARN, L_MPD, "%s parameter '%s' is not an integer and will be ignored\n", tagtype->tag, argv[i + 1]); else c1 = db_mprintf("(%s = %d)", tagtype->field, num); } else if (tagtype->type == MPD_TYPE_SPECIAL) { if (0 == strcasecmp(tagtype->tag, "any")) { c1 = db_mprintf("(f.artist LIKE '%%%q%%' OR f.album LIKE '%%%q%%' OR f.title LIKE '%%%q%%')", argv[i + 1], argv[i + 1], argv[i + 1]); } else if (0 == strcasecmp(tagtype->tag, "file")) { if (exact_match) c1 = db_mprintf("(f.virtual_path = '/%q')", argv[i + 1]); else c1 = db_mprintf("(f.virtual_path LIKE '%%%q%%')", argv[i + 1]); } else if (0 == strcasecmp(tagtype->tag, "base")) { c1 = db_mprintf("(f.virtual_path LIKE '/%q%%')", argv[i + 1]); } else if (0 == strcasecmp(tagtype->tag, "modified-since")) { // according to the mpd protocol specification the value can be a unix timestamp or ISO 8601 if (strchr(argv[i + 1], '-') == NULL) c1 = db_mprintf("(f.time_modified > strftime('%%s', datetime('%q', 'unixepoch')))", argv[i + 1]); else c1 = db_mprintf("(f.time_modified > strftime('%%s', datetime('%q', 'utc')))", argv[i + 1]); } else { DPRINTF(E_WARN, L_MPD, "Unknown special parameter '%s' will be ignored\n", tagtype->tag); } } } else if (i == 0 && argc == 1) { // Special case: a single token is allowed if listing albums for an artist c1 = db_mprintf("(f.album_artist = '%q')", argv[i]); } else { DPRINTF(E_WARN, L_MPD, "Missing value for parameter '%s', ignoring '%s'\n", argv[i], argv[i]); } if (c1) { append_string(&qp->filter, c1, " AND "); free(c1); c1 = NULL; } } if ((i + 1) < argc && 0 == strcasecmp(argv[i], "window")) { ret = mpd_pars_range_arg(argv[i + 1], &start_pos, &end_pos); if (ret == 0) { qp->idx_type = I_SUB; qp->limit = end_pos - start_pos; qp->offset = start_pos; } else { DPRINTF(E_LOG, L_MPD, "Window argument doesn't convert to integer or range: '%s'\n", argv[i + 1]); } } return 0; } static int parse_group_params(int argc, char **argv, bool group_in_listcommand, struct query_params *qp, struct mpd_tagtype ***group, int *groupsize) { int first_group; int i; int j; struct mpd_tagtype *tagtype; *groupsize = 0; *group = NULL; // Iterate through arguments to the first "group" argument for (first_group = 0; first_group < argc; first_group++) { if (0 == strcasecmp(argv[first_group], "group")) break; } // Early return if no group keyword in arguments (or group keyword not followed by field argument) if ((first_group + 1) >= argc || (argc - first_group) % 2 != 0) return 0; *groupsize = (argc - first_group) / 2; CHECK_NULL(L_MPD, *group = calloc(*groupsize, sizeof(struct mpd_tagtype *))); // Now process all group/field arguments for (j = 0; j < (*groupsize); j++) { i = first_group + (j * 2); if ((i + 1) < argc && 0 == strcasecmp(argv[i], "group")) { tagtype = find_tagtype(argv[i + 1]); if (tagtype && tagtype->type != MPD_TYPE_SPECIAL) { if (group_in_listcommand) append_string(&qp->group, tagtype->group_field, ", "); (*group)[j] = tagtype; } } } return 0; } /* * Command handler function for 'currentsong' */ static int mpd_command_currentsong(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct player_status status; struct db_queue_item *queue_item; int ret; player_get_status(&status); if (status.status == PLAY_STOPPED) queue_item = db_queue_fetch_bypos(0, status.shuffle); else queue_item = db_queue_fetch_byitemid(status.item_id); if (!queue_item) { return 0; } ret = mpd_add_db_queue_item(evbuf, queue_item); free_queue_item(queue_item, 0); if (ret < 0) { *errmsg = safe_asprintf("Error adding media info for file with id: %d", status.id); return ACK_ERROR_UNKNOWN; } return 0; } static int mpd_notify_idle_client(struct mpd_client_ctx *client_ctx, short events); /* * Example input: * idle "database" "mixer" "options" "output" "player" "playlist" "sticker" "update" */ static int mpd_command_idle(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int i; ctx->idle_events = 0; ctx->is_idle = true; if (argc > 1) { for (i = 1; i < argc; i++) { if (0 == strcmp(argv[i], "database")) ctx->idle_events |= LISTENER_DATABASE; else if (0 == strcmp(argv[i], "update")) ctx->idle_events |= LISTENER_UPDATE; else if (0 == strcmp(argv[i], "player")) ctx->idle_events |= LISTENER_PLAYER; else if (0 == strcmp(argv[i], "playlist")) ctx->idle_events |= LISTENER_QUEUE; else if (0 == strcmp(argv[i], "mixer")) ctx->idle_events |= LISTENER_VOLUME; else if (0 == strcmp(argv[i], "output")) ctx->idle_events |= LISTENER_SPEAKER; else if (0 == strcmp(argv[i], "options")) ctx->idle_events |= LISTENER_OPTIONS; else if (0 == strcmp(argv[i], "stored_playlist")) ctx->idle_events |= LISTENER_STORED_PLAYLIST; else if (0 == strcmp(argv[i], "sticker")) ctx->idle_events |= LISTENER_RATING; else DPRINTF(E_DBG, L_MPD, "Idle command for '%s' not supported\n", argv[i]); } } else ctx->idle_events = MPD_ALL_IDLE_LISTENER_EVENTS; // If events the client listens to occurred since the last idle call (or since the client connected, // if it is the first idle call), notify immediately. if (ctx->events & ctx->idle_events) mpd_notify_idle_client(ctx, ctx->events); return 0; } static int mpd_command_noidle(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { /* * The protocol specifies: "The idle command can be canceled by * sending the command noidle (no other commands are allowed). MPD * will then leave idle mode and print results immediately; might be * empty at this time." */ if (ctx->events) mpd_notify_idle_client(ctx, ctx->events); else evbuffer_add(ctx->evbuffer, "OK\n", 3); ctx->is_idle = false; return 0; } /* * Command handler function for 'status' * * Example output: * volume: -1 * repeat: 0 * random: 0 * single: 0 * consume: 0 * playlist: 2 * playlistlength: 34 * mixrampdb: 0.000000 * state: stop * song: 0 * songid: 1 * time: 28:306 * elapsed: 28.178 * bitrate: 278 * audio: 44100:f:2 * nextsong: 1 * nextsongid: 2 */ static int mpd_command_status(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct player_status status; uint32_t queue_length = 0; int queue_version = 0; char *state; uint32_t itemid = 0; struct db_queue_item *queue_item; player_get_status(&status); switch (status.status) { case PLAY_PAUSED: state = "pause"; break; case PLAY_PLAYING: state = "play"; break; default: state = "stop"; break; } db_admin_getint(&queue_version, DB_ADMIN_QUEUE_VERSION); db_queue_get_count(&queue_length); evbuffer_add_printf(evbuf, "volume: %d\n" "repeat: %d\n" "random: %d\n" "single: %d\n" "consume: %d\n" "playlist: %d\n" "playlistlength: %d\n" "mixrampdb: 0.000000\n" "state: %s\n", status.volume, (status.repeat == REPEAT_OFF ? 0 : 1), status.shuffle, (status.repeat == REPEAT_SONG ? 1 : 0), status.consume, queue_version, queue_length, state); if (status.status != PLAY_STOPPED) queue_item = db_queue_fetch_byitemid(status.item_id); else queue_item = db_queue_fetch_bypos(0, status.shuffle); if (queue_item) { evbuffer_add_printf(evbuf, "song: %d\n" "songid: %d\n", queue_item->pos, queue_item->id); itemid = queue_item->id; free_queue_item(queue_item, 0); } if (status.status != PLAY_STOPPED) { evbuffer_add_printf(evbuf, "time: %d:%d\n" "elapsed: %#.3f\n" "bitrate: 128\n" "audio: 44100:16:2\n", (status.pos_ms / 1000), (status.len_ms / 1000), (status.pos_ms / 1000.0)); } if (library_is_scanning()) { evbuffer_add(evbuf, "updating_db: 1\n", 15); } if (itemid > 0) { queue_item = db_queue_fetch_next(itemid, status.shuffle); if (queue_item) { evbuffer_add_printf(evbuf, "nextsong: %d\n" "nextsongid: %d\n", queue_item->pos, queue_item->id); free_queue_item(queue_item, 0); } } return 0; } /* * Command handler function for 'stats' */ static int mpd_command_stats(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params qp; struct filecount_info fci; double uptime; int64_t db_start = 0; int64_t db_update = 0; int ret; memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_COUNT_ITEMS; ret = db_filecount_get(&fci, &qp); if (ret < 0) { *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } db_admin_getint64(&db_start, DB_ADMIN_START_TIME); uptime = difftime(time(NULL), (time_t) db_start); db_admin_getint64(&db_update, DB_ADMIN_DB_UPDATE); //TODO [mpd] Implement missing stats attributes (playtime) evbuffer_add_printf(evbuf, "artists: %d\n" "albums: %d\n" "songs: %d\n" "uptime: %.f\n" //in seceonds "db_playtime: %" PRIi64 "\n" "db_update: %" PRIi64 "\n" "playtime: %d\n", fci.artist_count, fci.album_count, fci.count, uptime, (fci.length / 1000), db_update, 7); return 0; } /* * Command handler function for 'consume' * Sets the consume mode, expects argument argv[1] to be an integer with * 0 = disable consume * 1 = enable consume */ static int mpd_command_consume(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int enable; int ret; ret = safe_atoi32(argv[1], &enable); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } player_consume_set(enable); return 0; } /* * Command handler function for 'random' * Sets the shuffle mode, expects argument argv[1] to be an integer with * 0 = disable shuffle * 1 = enable shuffle */ static int mpd_command_random(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int enable; int ret; ret = safe_atoi32(argv[1], &enable); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } player_shuffle_set(enable); return 0; } /* * Command handler function for 'repeat' * Sets the repeat mode, expects argument argv[1] to be an integer with * 0 = repeat off * 1 = repeat all */ static int mpd_command_repeat(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int enable; int ret; ret = safe_atoi32(argv[1], &enable); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } if (enable == 0) player_repeat_set(REPEAT_OFF); else player_repeat_set(REPEAT_ALL); return 0; } /* * Command handler function for 'setvol' * Sets the volume, expects argument argv[1] to be an integer 0-100 */ static int mpd_command_setvol(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int volume; int ret; ret = safe_atoi32(argv[1], &volume); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } player_volume_set(volume); return 0; } /* * Command handler function for 'single' * Sets the repeat mode, expects argument argv[1] to be an integer. * The server only allows single-mode in combination with repeat, therefore * the command single translates (depending on the current repeat mode) into: * a) if repeat off: * 0 = repeat off * 1 = repeat song * b) if repeat all: * 0 = repeat all * 1 = repeat song * c) if repeat song: * 0 = repeat all * 1 = repeat song */ static int mpd_command_single(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int enable; struct player_status status; int ret; ret = safe_atoi32(argv[1], &enable); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } player_get_status(&status); if (enable == 0 && status.repeat != REPEAT_OFF) player_repeat_set(REPEAT_ALL); else if (enable == 0) player_repeat_set(REPEAT_OFF); else player_repeat_set(REPEAT_SONG); return 0; } /* * Command handler function for 'replay_gain_status' * The server does not support replay gain, therefor this function returns always * "replay_gain_mode: off". */ static int mpd_command_replay_gain_status(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { evbuffer_add(evbuf, "replay_gain_mode: off\n", 22); return 0; } /* * Command handler function for 'volume' * Changes the volume by the given amount, expects argument argv[1] to be an integer * * According to the mpd protocoll specification this function is deprecated. */ static int mpd_command_volume(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct player_status status; int volume; int ret; ret = safe_atoi32(argv[1], &volume); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } player_get_status(&status); volume += status.volume; player_volume_set(volume); return 0; } /* * Command handler function for 'next' * Skips to the next song in the playqueue */ static int mpd_command_next(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int ret; ret = player_playback_next(); if (ret < 0) { *errmsg = safe_asprintf("Failed to skip to next song"); return ACK_ERROR_UNKNOWN; } ret = player_playback_start(); if (ret < 0) { *errmsg = safe_asprintf("Player returned an error for start after nextitem"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'pause' * Toggles pause/play, if the optional argument argv[1] is present, it must be an integer with * 0 = play * 1 = pause */ static int mpd_command_pause(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int pause; struct player_status status; int ret; pause = 1; if (argc > 1) { ret = safe_atoi32(argv[1], &pause); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } } else { player_get_status(&status); if (status.status != PLAY_PLAYING) pause = 0; } if (pause == 1) ret = player_playback_pause(); else ret = player_playback_start(); if (ret < 0) { *errmsg = safe_asprintf("Failed to pause playback"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'play' * Starts playback, the optional argument argv[1] represents the position in the playqueue * where to start playback. */ static int mpd_command_play(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int songpos; struct player_status status; struct db_queue_item *queue_item; int ret; songpos = -1; if (argc > 1) { ret = safe_atoi32(argv[1], &songpos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } } player_get_status(&status); if (status.status == PLAY_PLAYING && songpos < 0) { DPRINTF(E_DBG, L_MPD, "Ignoring play command with parameter '%s', player is already playing.\n", argv[1]); return 0; } if (status.status == PLAY_PLAYING) { // Stop playback, if player is already playing and a valid song position is given (it will be restarted for the given song position) player_playback_stop(); } if (songpos > 0) { queue_item = db_queue_fetch_bypos(songpos, 0); if (!queue_item) { *errmsg = safe_asprintf("Failed to start playback"); return ACK_ERROR_UNKNOWN; } ret = player_playback_start_byitem(queue_item); free_queue_item(queue_item, 0); } else ret = player_playback_start(); if (ret < 0) { *errmsg = safe_asprintf("Failed to start playback"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'playid' * Starts playback, the optional argument argv[1] represents the songid of the song * where to start playback. */ static int mpd_command_playid(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { uint32_t id; struct player_status status; struct db_queue_item *queue_item; int ret; player_get_status(&status); id = 0; if (argc > 1) { //TODO [mpd] mpd allows passing "-1" as argument and simply ignores it, the server fails to convert "-1" to an unsigned int ret = safe_atou32(argv[1], &id); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } } if (status.status == PLAY_PLAYING) { // Stop playback, if player is already playing and a valid item id is given (it will be restarted for the given song) player_playback_stop(); } if (id > 0) { queue_item = db_queue_fetch_byitemid(id); if (!queue_item) { *errmsg = safe_asprintf("Failed to start playback"); return ACK_ERROR_UNKNOWN; } ret = player_playback_start_byitem(queue_item); free_queue_item(queue_item, 0); } else ret = player_playback_start(); if (ret < 0) { *errmsg = safe_asprintf("Failed to start playback"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'previous' * Skips to the previous song in the playqueue */ static int mpd_command_previous(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int ret; ret = player_playback_prev(); if (ret < 0) { *errmsg = safe_asprintf("Failed to skip to previous song"); return ACK_ERROR_UNKNOWN; } ret = player_playback_start(); if (ret < 0) { *errmsg = safe_asprintf("Player returned an error for start after previtem"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'seekid' * Seeks to song at the given position in argv[1] to the position in seconds given in argument argv[2] * (fractions allowed). */ static int mpd_command_seek(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { uint32_t songpos; float seek_target_sec; int seek_target_msec; int ret; ret = safe_atou32(argv[1], &songpos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } //TODO Allow seeking in songs not currently playing seek_target_sec = strtof(argv[2], NULL); seek_target_msec = seek_target_sec * 1000; ret = player_playback_seek(seek_target_msec, PLAYER_SEEK_POSITION); if (ret < 0) { *errmsg = safe_asprintf("Failed to seek current song to time %d msec", seek_target_msec); return ACK_ERROR_UNKNOWN; } ret = player_playback_start(); if (ret < 0) { *errmsg = safe_asprintf("Player returned an error for start after seekcur"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'seekid' * Seeks to song with id given in argv[1] to the position in seconds given in argument argv[2] * (fractions allowed). */ static int mpd_command_seekid(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct player_status status; uint32_t id; float seek_target_sec; int seek_target_msec; int ret; ret = safe_atou32(argv[1], &id); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } //TODO Allow seeking in songs not currently playing player_get_status(&status); if (status.item_id != id) { *errmsg = safe_asprintf("Given song is not the current playing one, seeking is not supported"); return ACK_ERROR_UNKNOWN; } seek_target_sec = strtof(argv[2], NULL); seek_target_msec = seek_target_sec * 1000; ret = player_playback_seek(seek_target_msec, PLAYER_SEEK_POSITION); if (ret < 0) { *errmsg = safe_asprintf("Failed to seek current song to time %d msec", seek_target_msec); return ACK_ERROR_UNKNOWN; } ret = player_playback_start(); if (ret < 0) { *errmsg = safe_asprintf("Player returned an error for start after seekcur"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'seekcur' * Seeks the current song to the position in seconds given in argument argv[1] (fractions allowed). */ static int mpd_command_seekcur(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { float seek_target_sec; int seek_target_msec; int ret; seek_target_sec = strtof(argv[1], NULL); seek_target_msec = seek_target_sec * 1000; // TODO If prefixed by '+' or '-', then the time is relative to the current playing position. ret = player_playback_seek(seek_target_msec, PLAYER_SEEK_POSITION); if (ret < 0) { *errmsg = safe_asprintf("Failed to seek current song to time %d msec", seek_target_msec); return ACK_ERROR_UNKNOWN; } ret = player_playback_start(); if (ret < 0) { *errmsg = safe_asprintf("Player returned an error for start after seekcur"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'stop' * Stop playback. */ static int mpd_command_stop(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int ret; ret = player_playback_stop(); if (ret != 0) { *errmsg = safe_asprintf("Failed to stop playback"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Add media file item with given virtual path to the queue * * @param path The virtual path * @param exact_match If TRUE add only item with exact match, otherwise add all items virtual path start with the given path * @return The queue item id of the last inserted item or -1 on failure */ static int mpd_queue_add(char *path, bool exact_match, int position) { struct query_params qp; struct player_status status; int new_item_id; int ret; new_item_id = 0; memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_ITEMS; qp.idx_type = I_NONE; qp.sort = S_ARTIST; if (exact_match) qp.filter = db_mprintf("f.disabled = 0 AND f.virtual_path LIKE '/%q'", path); else qp.filter = db_mprintf("f.disabled = 0 AND f.virtual_path LIKE '/%q%%'", path); if (!qp.filter) { DPRINTF(E_DBG, L_PLAYER, "Out of memory\n"); return -1; } player_get_status(&status); ret = db_queue_add_by_query(&qp, status.shuffle, status.item_id, position, NULL, &new_item_id); free(qp.filter); if (ret == 0) return new_item_id; return ret; } /* * Command handler function for 'add' * Adds the all songs under the given path to the end of the playqueue (directories add recursively). * Expects argument argv[1] to be a path to a single file or directory. */ static int mpd_command_add(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct player_status status; int ret; ret = mpd_queue_add(argv[1], false, -1); if (ret < 0) { *errmsg = safe_asprintf("Failed to add song '%s' to playlist", argv[1]); return ACK_ERROR_UNKNOWN; } if (ret == 0) { player_get_status(&status); // Given path is not in the library, check if it is possible to add as a non-library queue item ret = library_queue_item_add(argv[1], -1, status.shuffle, status.item_id, NULL, NULL); if (ret != LIBRARY_OK) { *errmsg = safe_asprintf("Failed to add song '%s' to playlist (unkown path)", argv[1]); return ACK_ERROR_UNKNOWN; } } return 0; } /* * Command handler function for 'addid' * Adds the song under the given path to the end or to the given position of the playqueue. * Expects argument argv[1] to be a path to a single file. argv[2] is optional, if present * it must be an integer representing the position in the playqueue. */ static int mpd_command_addid(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct player_status status; int to_pos = -1; int ret; if (argc > 2) { ret = safe_atoi32(argv[2], &to_pos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[2]); return ACK_ERROR_ARG; } } ret = mpd_queue_add(argv[1], true, to_pos); if (ret == 0) { player_get_status(&status); // Given path is not in the library, directly add it as a new queue item ret = library_queue_item_add(argv[1], to_pos, status.shuffle, status.item_id, NULL, NULL); if (ret != LIBRARY_OK) { *errmsg = safe_asprintf("Failed to add song '%s' to playlist (unkown path)", argv[1]); return ACK_ERROR_UNKNOWN; } } if (ret < 0) { *errmsg = safe_asprintf("Failed to add song '%s' to playlist", argv[1]); return ACK_ERROR_UNKNOWN; } evbuffer_add_printf(evbuf, "Id: %d\n", ret); // mpd_queue_add returns the item_id of the last inserted queue item return 0; } /* * Command handler function for 'clear' * Stops playback and removes all songs from the playqueue */ static int mpd_command_clear(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int ret; ret = player_playback_stop(); if (ret != 0) { DPRINTF(E_DBG, L_MPD, "Failed to stop playback\n"); } db_queue_clear(0); return 0; } /* * Command handler function for 'delete' * Removes songs from the playqueue. Expects argument argv[1] (optional) to be an integer or * an integer range {START:END} representing the position of the songs in the playlist, that * should be removed. */ static int mpd_command_delete(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int start_pos; int end_pos; int count; int ret; // If argv[1] is ommited clear the whole queue if (argc < 2) { db_queue_clear(0); return 0; } // If argument argv[1] is present remove only the specified songs ret = mpd_pars_range_arg(argv[1], &start_pos, &end_pos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer or range: '%s'", argv[1]); return ACK_ERROR_ARG; } count = end_pos - start_pos; ret = db_queue_delete_bypos(start_pos, count); if (ret < 0) { *errmsg = safe_asprintf("Failed to remove %d songs starting at position %d", count, start_pos); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'deleteid' * Removes the song with given id from the playqueue. Expects argument argv[1] to be an integer (song id). */ static int mpd_command_deleteid(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { uint32_t songid; int ret; ret = safe_atou32(argv[1], &songid); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } ret = db_queue_delete_byitemid(songid); if (ret < 0) { *errmsg = safe_asprintf("Failed to remove song with id '%s'", argv[1]); return ACK_ERROR_UNKNOWN; } return 0; } //Moves the song at FROM or range of songs at START:END to TO in the playlist. static int mpd_command_move(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int start_pos; int end_pos; int count; uint32_t to_pos; int ret; ret = mpd_pars_range_arg(argv[1], &start_pos, &end_pos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer or range: '%s'", argv[1]); return ACK_ERROR_ARG; } count = end_pos - start_pos; if (count > 1) DPRINTF(E_WARN, L_MPD, "Moving ranges is not supported, only the first item will be moved\n"); ret = safe_atou32(argv[2], &to_pos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[2]); return ACK_ERROR_ARG; } ret = db_queue_move_bypos(start_pos, to_pos); if (ret < 0) { *errmsg = safe_asprintf("Failed to move song at position %d to %d", start_pos, to_pos); return ACK_ERROR_UNKNOWN; } return 0; } static int mpd_command_moveid(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { uint32_t songid; uint32_t to_pos; int ret; ret = safe_atou32(argv[1], &songid); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } ret = safe_atou32(argv[2], &to_pos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[2]); return ACK_ERROR_ARG; } ret = db_queue_move_byitemid(songid, to_pos, 0); if (ret < 0) { *errmsg = safe_asprintf("Failed to move song with id '%s' to index '%s'", argv[1], argv[2]); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'playlistid' * Displays a list of all songs in the queue, or if the optional argument is given, displays information * only for the song with ID. * * The order of the songs is always the not shuffled order. */ static int mpd_command_playlistid(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params query_params; struct db_queue_item queue_item; uint32_t songid; int ret; songid = 0; if (argc > 1) { ret = safe_atou32(argv[1], &songid); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } } memset(&query_params, 0, sizeof(struct query_params)); if (songid > 0) query_params.filter = db_mprintf("id = %d", songid); ret = db_queue_enum_start(&query_params); if (ret < 0) { free(query_params.filter); *errmsg = safe_asprintf("Failed to start queue enum for command playlistid: '%s'", argv[1]); return ACK_ERROR_ARG; } while ((ret = db_queue_enum_fetch(&query_params, &queue_item)) == 0 && queue_item.id > 0) { ret = mpd_add_db_queue_item(evbuf, &queue_item); if (ret < 0) { *errmsg = safe_asprintf("Error adding media info for file with id: %d", queue_item.file_id); db_queue_enum_end(&query_params); free(query_params.filter); return ACK_ERROR_UNKNOWN; } } db_queue_enum_end(&query_params); free(query_params.filter); return 0; } /* * Command handler function for 'playlistinfo' * Displays a list of all songs in the queue, or if the optional argument is given, displays information * only for the song SONGPOS or the range of songs START:END given in argv[1]. * * The order of the songs is always the not shuffled order. */ static int mpd_command_playlistinfo(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params query_params; struct db_queue_item queue_item; int start_pos; int end_pos; int ret; start_pos = 0; end_pos = 0; memset(&query_params, 0, sizeof(struct query_params)); if (argc > 1) { ret = mpd_pars_range_arg(argv[1], &start_pos, &end_pos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer or range: '%s'", argv[1]); return ACK_ERROR_ARG; } if (start_pos < 0) DPRINTF(E_DBG, L_MPD, "Command 'playlistinfo' called with pos < 0 (arg = '%s'), ignore arguments and return whole queue\n", argv[1]); else query_params.filter = db_mprintf("pos >= %d AND pos < %d", start_pos, end_pos); } ret = db_queue_enum_start(&query_params); if (ret < 0) { free(query_params.filter); *errmsg = safe_asprintf("Failed to start queue enum for command playlistinfo: '%s'", argv[1]); return ACK_ERROR_ARG; } while ((ret = db_queue_enum_fetch(&query_params, &queue_item)) == 0 && queue_item.id > 0) { ret = mpd_add_db_queue_item(evbuf, &queue_item); if (ret < 0) { *errmsg = safe_asprintf("Error adding media info for file with id: %d", queue_item.file_id); db_queue_enum_end(&query_params); free(query_params.filter); return ACK_ERROR_UNKNOWN; } } db_queue_enum_end(&query_params); free(query_params.filter); return 0; } static int mpd_command_playlistfind(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params query_params; struct db_queue_item queue_item; int ret; memset(&query_params, 0, sizeof(struct query_params)); if (argc < 3 || ((argc - 1) % 2) != 0) { *errmsg = safe_asprintf("Missing argument(s) for command 'playlistfind'"); return ACK_ERROR_ARG; } parse_filter_window_params(argc - 1, argv + 1, true, &query_params); ret = db_queue_enum_start(&query_params); if (ret < 0) { free(query_params.filter); *errmsg = safe_asprintf("Failed to start queue enum for command playlistinfo: '%s'", argv[1]); return ACK_ERROR_ARG; } while ((ret = db_queue_enum_fetch(&query_params, &queue_item)) == 0 && queue_item.id > 0) { ret = mpd_add_db_queue_item(evbuf, &queue_item); if (ret < 0) { *errmsg = safe_asprintf("Error adding media info for file with id: %d", queue_item.file_id); db_queue_enum_end(&query_params); free(query_params.filter); return ACK_ERROR_UNKNOWN; } } db_queue_enum_end(&query_params); free(query_params.filter); return 0; } static int mpd_command_playlistsearch(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params query_params; struct db_queue_item queue_item; int ret; memset(&query_params, 0, sizeof(struct query_params)); if (argc < 3 || ((argc - 1) % 2) != 0) { *errmsg = safe_asprintf("Missing argument(s) for command 'playlistfind'"); return ACK_ERROR_ARG; } parse_filter_window_params(argc - 1, argv + 1, false, &query_params); ret = db_queue_enum_start(&query_params); if (ret < 0) { free(query_params.filter); *errmsg = safe_asprintf("Failed to start queue enum for command playlistinfo: '%s'", argv[1]); return ACK_ERROR_ARG; } while ((ret = db_queue_enum_fetch(&query_params, &queue_item)) == 0 && queue_item.id > 0) { ret = mpd_add_db_queue_item(evbuf, &queue_item); if (ret < 0) { *errmsg = safe_asprintf("Error adding media info for file with id: %d", queue_item.file_id); db_queue_enum_end(&query_params); free(query_params.filter); return ACK_ERROR_UNKNOWN; } } db_queue_enum_end(&query_params); free(query_params.filter); return 0; } static int plchanges_build_queryparams(struct query_params *query_params, int argc, char **argv, char **errmsg) { uint32_t version; int start_pos; int end_pos; int ret; memset(query_params, 0, sizeof(struct query_params)); ret = safe_atou32(argv[1], &version); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } start_pos = 0; end_pos = 0; if (argc > 2) { ret = mpd_pars_range_arg(argv[2], &start_pos, &end_pos); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer or range: '%s'", argv[2]); return ACK_ERROR_ARG; } if (start_pos < 0) DPRINTF(E_DBG, L_MPD, "Command 'playlistinfo' called with pos < 0 (arg = '%s'), ignore arguments and return whole queue\n", argv[1]); } if (start_pos < 0 || end_pos <= 0) query_params->filter = db_mprintf("(queue_version > %d)", version); else query_params->filter = db_mprintf("(queue_version > %d AND pos >= %d AND pos < %d)", version, start_pos, end_pos); return 0; } /* * Command handler function for 'plchanges' * Lists all changed songs in the queue since the given playlist version in argv[1]. */ static int mpd_command_plchanges(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params query_params; struct db_queue_item queue_item; int ret; ret = plchanges_build_queryparams(&query_params, argc, argv, errmsg); if (ret != 0) return ret; ret = db_queue_enum_start(&query_params); if (ret < 0) goto error; while ((ret = db_queue_enum_fetch(&query_params, &queue_item)) == 0 && queue_item.id > 0) { ret = mpd_add_db_queue_item(evbuf, &queue_item); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error adding media info for file with id: %d", queue_item.file_id); goto error; } } db_queue_enum_end(&query_params); free_query_params(&query_params, 1); return 0; error: db_queue_enum_end(&query_params); free_query_params(&query_params, 1); *errmsg = safe_asprintf("Failed to start queue enum for command plchanges"); return ACK_ERROR_UNKNOWN; } /* * Command handler function for 'plchangesposid' * Lists all changed songs in the queue since the given playlist version in argv[1] without metadata. */ static int mpd_command_plchangesposid(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params query_params; struct db_queue_item queue_item; int ret; ret = plchanges_build_queryparams(&query_params, argc, argv, errmsg); if (ret != 0) return ret; ret = db_queue_enum_start(&query_params); if (ret < 0) goto error; while ((ret = db_queue_enum_fetch(&query_params, &queue_item)) == 0 && queue_item.id > 0) { evbuffer_add_printf(evbuf, "cpos: %d\n" "Id: %d\n", queue_item.pos, queue_item.id); } db_queue_enum_end(&query_params); free_query_params(&query_params, 1); return 0; error: db_queue_enum_end(&query_params); free_query_params(&query_params, 1); *errmsg = safe_asprintf("Failed to start queue enum for command plchangesposid"); return ACK_ERROR_UNKNOWN; } /* * Command handler function for 'listplaylist' * Lists all songs in the playlist given by virtual-path in argv[1]. */ static int mpd_command_listplaylist(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { char *path; struct playlist_info *pli; struct query_params qp; struct db_media_file_info dbmfi; int ret; if (!default_pl_dir || strstr(argv[1], ":/")) { // Argument is a virtual path, make sure it starts with a '/' path = prepend_slash(argv[1]); } else { // Argument is a playlist name, prepend default playlist directory path = safe_asprintf("%s/%s", default_pl_dir, argv[1]); } pli = db_pl_fetch_byvirtualpath(path); free(path); if (!pli) { *errmsg = safe_asprintf("Playlist not found for path '%s'", argv[1]); return ACK_ERROR_ARG; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_PLITEMS; qp.idx_type = I_NONE; qp.id = pli->id; ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free_pli(pli, 0); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } while ((ret = db_query_fetch_file(&dbmfi, &qp)) == 0) { evbuffer_add_printf(evbuf, "file: %s\n", (dbmfi.virtual_path + 1)); } db_query_end(&qp); free_pli(pli, 0); return 0; } /* * Command handler function for 'listplaylistinfo' * Lists all songs in the playlist given by virtual-path in argv[1] with metadata. */ static int mpd_command_listplaylistinfo(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { char *path; struct playlist_info *pli; struct query_params qp; struct db_media_file_info dbmfi; int ret; if (!default_pl_dir || strstr(argv[1], ":/")) { // Argument is a virtual path, make sure it starts with a '/' path = prepend_slash(argv[1]); } else { // Argument is a playlist name, prepend default playlist directory path = safe_asprintf("%s/%s", default_pl_dir, argv[1]); } pli = db_pl_fetch_byvirtualpath(path); free(path); if (!pli) { *errmsg = safe_asprintf("Playlist not found for path '%s'", argv[1]); return ACK_ERROR_NO_EXIST; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_PLITEMS; qp.idx_type = I_NONE; qp.id = pli->id; ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free_pli(pli, 0); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } while ((ret = db_query_fetch_file(&dbmfi, &qp)) == 0) { ret = mpd_add_db_media_file_info(evbuf, &dbmfi); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error adding song to the evbuffer, song id: %s\n", dbmfi.id); } } db_query_end(&qp); free_pli(pli, 0); return 0; } /* * Command handler function for 'listplaylists' * Lists all playlists with their last modified date. */ static int mpd_command_listplaylists(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params qp; struct db_playlist_info dbpli; char modified[32]; uint32_t time_modified; int ret; memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_PL; qp.sort = S_PLAYLIST; qp.idx_type = I_NONE; qp.filter = db_mprintf("(f.type = %d OR f.type = %d)", PL_PLAIN, PL_SMART); ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free(qp.filter); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } while (((ret = db_query_fetch_pl(&dbpli, &qp)) == 0) && (dbpli.id)) { if (safe_atou32(dbpli.db_timestamp, &time_modified) != 0) { *errmsg = safe_asprintf("Error converting time modified to uint32_t: %s\n", dbpli.db_timestamp); db_query_end(&qp); free(qp.filter); return ACK_ERROR_UNKNOWN; } mpd_time(modified, sizeof(modified), time_modified); evbuffer_add_printf(evbuf, "playlist: %s\n" "Last-Modified: %s\n", (dbpli.virtual_path + 1), modified); } db_query_end(&qp); free(qp.filter); return 0; } /* * Command handler function for 'load' * Adds the playlist given by virtual-path in argv[1] to the queue. */ static int mpd_command_load(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { char *path; struct playlist_info *pli; struct player_status status; int ret; if (!default_pl_dir || strstr(argv[1], ":/")) { // Argument is a virtual path, make sure it starts with a '/' path = prepend_slash(argv[1]); } else { // Argument is a playlist name, prepend default playlist directory path = safe_asprintf("%s/%s", default_pl_dir, argv[1]); } pli = db_pl_fetch_byvirtualpath(path); free(path); if (!pli) { *errmsg = safe_asprintf("Playlist not found for path '%s'", argv[1]); return ACK_ERROR_ARG; } //TODO If a second parameter is given only add the specified range of songs to the playqueue player_get_status(&status); ret = db_queue_add_by_playlistid(pli->id, status.shuffle, status.item_id, -1, NULL, NULL); free_pli(pli, 0); if (ret < 0) { *errmsg = safe_asprintf("Failed to add song '%s' to playlist", argv[1]); return ACK_ERROR_UNKNOWN; } return 0; } static int mpd_command_playlistadd(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { char *vp_playlist; char *vp_item; int ret; if (!allow_modifying_stored_playlists) { *errmsg = safe_asprintf("Modifying stored playlists is not enabled"); return ACK_ERROR_PERMISSION; } if (!default_pl_dir || strstr(argv[1], ":/")) { // Argument is a virtual path, make sure it starts with a '/' vp_playlist = prepend_slash(argv[1]); } else { // Argument is a playlist name, prepend default playlist directory vp_playlist = safe_asprintf("%s/%s", default_pl_dir, argv[1]); } vp_item = prepend_slash(argv[2]); ret = library_playlist_item_add(vp_playlist, vp_item); free(vp_playlist); free(vp_item); if (ret < 0) { *errmsg = safe_asprintf("Error adding item to file '%s'", argv[1]); return ACK_ERROR_ARG; } return 0; } static int mpd_command_rm(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { char *virtual_path; int ret; if (!allow_modifying_stored_playlists) { *errmsg = safe_asprintf("Modifying stored playlists is not enabled"); return ACK_ERROR_PERMISSION; } if (!default_pl_dir || strstr(argv[1], ":/")) { // Argument is a virtual path, make sure it starts with a '/' virtual_path = prepend_slash(argv[1]); } else { // Argument is a playlist name, prepend default playlist directory virtual_path = safe_asprintf("%s/%s", default_pl_dir, argv[1]); } ret = library_playlist_remove(virtual_path); free(virtual_path); if (ret < 0) { *errmsg = safe_asprintf("Error removing playlist '%s'", argv[1]); return ACK_ERROR_ARG; } return 0; } static int mpd_command_save(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { char *virtual_path; int ret; if (!allow_modifying_stored_playlists) { *errmsg = safe_asprintf("Modifying stored playlists is not enabled"); return ACK_ERROR_PERMISSION; } if (!default_pl_dir || strstr(argv[1], ":/")) { // Argument is a virtual path, make sure it starts with a '/' virtual_path = prepend_slash(argv[1]); } else { // Argument is a playlist name, prepend default playlist directory virtual_path = safe_asprintf("%s/%s", default_pl_dir, argv[1]); } ret = library_queue_save(virtual_path); free(virtual_path); if (ret < 0) { *errmsg = safe_asprintf("Error saving queue to file '%s'", argv[1]); return ACK_ERROR_ARG; } return 0; } static int mpd_command_count(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params qp; struct filecount_info fci; int ret; if (argc < 3 || ((argc - 1) % 2) != 0) { *errmsg = safe_asprintf("Missing argument(s) for command 'find'"); return ACK_ERROR_ARG; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_COUNT_ITEMS; parse_filter_window_params(argc - 1, argv + 1, true, &qp); ret = db_filecount_get(&fci, &qp); if (ret < 0) { free(qp.filter); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } evbuffer_add_printf(evbuf, "songs: %d\n" "playtime: %" PRIu64 "\n", fci.count, (fci.length / 1000)); db_query_end(&qp); free(qp.filter); return 0; } static int mpd_command_find(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params qp; struct db_media_file_info dbmfi; int ret; if (argc < 3 || ((argc - 1) % 2) != 0) { *errmsg = safe_asprintf("Missing argument(s) for command 'find'"); return ACK_ERROR_ARG; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_ITEMS; qp.sort = S_NAME; qp.idx_type = I_NONE; parse_filter_window_params(argc - 1, argv + 1, true, &qp); ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free(qp.filter); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } while ((ret = db_query_fetch_file(&dbmfi, &qp)) == 0) { ret = mpd_add_db_media_file_info(evbuf, &dbmfi); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error adding song to the evbuffer, song id: %s\n", dbmfi.id); } } db_query_end(&qp); free(qp.filter); return 0; } static int mpd_command_findadd(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params qp; struct player_status status; int ret; if (argc < 3 || ((argc - 1) % 2) != 0) { *errmsg = safe_asprintf("Missing argument(s) for command 'findadd'"); return ACK_ERROR_ARG; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_ITEMS; qp.sort = S_ARTIST; qp.idx_type = I_NONE; parse_filter_window_params(argc - 1, argv + 1, true, &qp); player_get_status(&status); ret = db_queue_add_by_query(&qp, status.shuffle, status.item_id, -1, NULL, NULL); free(qp.filter); if (ret < 0) { *errmsg = safe_asprintf("Failed to add songs to playlist"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Some MPD clients crash if the tag value includes the newline character. * While they should normally not be included in most ID3 tags, they sometimes * are, so we just change them to space. See #1613 for more details. */ static void sanitize_value(char **strval) { char *ptr = *strval; while(*ptr != '\0') { if(*ptr == '\n') { *ptr = ' '; } ptr++; } } static int mpd_command_list(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct mpd_tagtype *tagtype; struct query_params qp; struct mpd_tagtype **group; int groupsize; struct db_media_file_info dbmfi; char **strval; int i; int ret; if (argc < 2 || ((argc % 2) != 0)) { if (argc != 3 || (0 != strcasecmp(argv[1], "album"))) { *errmsg = safe_asprintf("Missing argument(s) for command 'list'"); return ACK_ERROR_ARG; } } tagtype = find_tagtype(argv[1]); if (!tagtype || tagtype->type == MPD_TYPE_SPECIAL) //FIXME allow "file" tagtype { DPRINTF(E_WARN, L_MPD, "Unsupported type argument for command 'list': %s\n", argv[1]); return 0; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_ITEMS; qp.idx_type = I_NONE; qp.order = tagtype->sort_field; qp.group = strdup(tagtype->group_field); if (argc > 2) { parse_filter_window_params(argc - 2, argv + 2, true, &qp); } group = NULL; groupsize = 0; parse_group_params(argc - 2, argv + 2, tagtype->group_in_listcommand, &qp, &group, &groupsize); ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free(qp.filter); free(qp.group); free(group); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } while ((ret = db_query_fetch_file(&dbmfi, &qp)) == 0) { strval = (char **) ((char *)&dbmfi + tagtype->mfi_offset); if (!(*strval) || (**strval == '\0')) continue; sanitize_value(strval); evbuffer_add_printf(evbuf, "%s: %s\n", tagtype->tag, *strval); if (group && groupsize > 0) { for (i = 0; i < groupsize; i++) { if (!group[i]) continue; strval = (char **) ((char *)&dbmfi + group[i]->mfi_offset); if (!(*strval) || (**strval == '\0')) continue; evbuffer_add_printf(evbuf, "%s: %s\n", group[i]->tag, *strval); } } } db_query_end(&qp); free(qp.filter); free(qp.group); free(group); return 0; } static int mpd_add_directory(struct evbuffer *evbuf, int directory_id, int listall, int listinfo, char **errmsg) { struct directory_info subdir; struct query_params qp; struct directory_enum dir_enum; struct db_playlist_info dbpli; char modified[32]; uint32_t time_modified; struct db_media_file_info dbmfi; int ret; // Load playlists for dir-id memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_PL; qp.sort = S_PLAYLIST; qp.idx_type = I_NONE; qp.filter = db_mprintf("(f.directory_id = %d AND (f.type = %d OR f.type = %d))", directory_id, PL_PLAIN, PL_SMART); ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free(qp.filter); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } while (((ret = db_query_fetch_pl(&dbpli, &qp)) == 0) && (dbpli.id)) { if (safe_atou32(dbpli.db_timestamp, &time_modified) != 0) { DPRINTF(E_LOG, L_MPD, "Error converting time modified to uint32_t: %s\n", dbpli.db_timestamp); } if (listinfo) { mpd_time(modified, sizeof(modified), time_modified); evbuffer_add_printf(evbuf, "playlist: %s\n" "Last-Modified: %s\n", (dbpli.virtual_path + 1), modified); } else { evbuffer_add_printf(evbuf, "playlist: %s\n", (dbpli.virtual_path + 1)); } } db_query_end(&qp); free(qp.filter); // Load sub directories for dir-id memset(&dir_enum, 0, sizeof(struct directory_enum)); dir_enum.parent_id = directory_id; ret = db_directory_enum_start(&dir_enum); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Failed to start directory enum for parent_id %d\n", directory_id); db_directory_enum_end(&dir_enum); return -1; } while ((ret = db_directory_enum_fetch(&dir_enum, &subdir)) == 0 && subdir.id > 0) { if (listinfo) { evbuffer_add_printf(evbuf, "directory: %s\n" "Last-Modified: %s\n", (subdir.virtual_path + 1), "2015-12-01 00:00"); } else { evbuffer_add_printf(evbuf, "directory: %s\n", (subdir.virtual_path + 1)); } if (listall) { mpd_add_directory(evbuf, subdir.id, listall, listinfo, errmsg); } } db_directory_enum_end(&dir_enum); // Load files for dir-id memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_ITEMS; qp.sort = S_ARTIST; qp.idx_type = I_NONE; qp.filter = db_mprintf("(f.directory_id = %d)", directory_id); ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free(qp.filter); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } while ((ret = db_query_fetch_file(&dbmfi, &qp)) == 0) { if (listinfo) { ret = mpd_add_db_media_file_info(evbuf, &dbmfi); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error adding song to the evbuffer, song id: %s\n", dbmfi.id); } } else { evbuffer_add_printf(evbuf, "file: %s\n", (dbmfi.virtual_path + 1)); } } db_query_end(&qp); free(qp.filter); return 0; } static int mpd_command_listall(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int dir_id; char parent[PATH_MAX]; int ret; if (argc < 2 || strlen(argv[1]) == 0 || (strncmp(argv[1], "/", 1) == 0 && strlen(argv[1]) == 1)) { ret = snprintf(parent, sizeof(parent), "/"); } else if (strncmp(argv[1], "/", 1) == 0) { ret = snprintf(parent, sizeof(parent), "%s/", argv[1]); } else { ret = snprintf(parent, sizeof(parent), "/%s", argv[1]); } if ((ret < 0) || (ret >= sizeof(parent))) { *errmsg = safe_asprintf("Parent path exceeds PATH_MAX"); return ACK_ERROR_UNKNOWN; } // Load dir-id from db for parent-path dir_id = db_directory_id_byvirtualpath(parent); if (dir_id == 0) { *errmsg = safe_asprintf("Directory info not found for virtual-path '%s'", parent); return ACK_ERROR_NO_EXIST; } ret = mpd_add_directory(evbuf, dir_id, 1, 0, errmsg); return ret; } static int mpd_command_listallinfo(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int dir_id; char parent[PATH_MAX]; int ret; if (argc < 2 || strlen(argv[1]) == 0 || (strncmp(argv[1], "/", 1) == 0 && strlen(argv[1]) == 1)) { ret = snprintf(parent, sizeof(parent), "/"); } else if (strncmp(argv[1], "/", 1) == 0) { ret = snprintf(parent, sizeof(parent), "%s/", argv[1]); } else { ret = snprintf(parent, sizeof(parent), "/%s", argv[1]); } if ((ret < 0) || (ret >= sizeof(parent))) { *errmsg = safe_asprintf("Parent path exceeds PATH_MAX"); return ACK_ERROR_UNKNOWN; } // Load dir-id from db for parent-path dir_id = db_directory_id_byvirtualpath(parent); if (dir_id == 0) { *errmsg = safe_asprintf("Directory info not found for virtual-path '%s'", parent); return ACK_ERROR_NO_EXIST; } ret = mpd_add_directory(evbuf, dir_id, 1, 1, errmsg); return ret; } /* * Command handler function for 'lsinfo' * Lists the contents of the directory given in argv[1]. */ static int mpd_command_lsinfo(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int dir_id; char parent[PATH_MAX]; int print_playlists; int ret; if (argc < 2 || strlen(argv[1]) == 0 || (strncmp(argv[1], "/", 1) == 0 && strlen(argv[1]) == 1)) { ret = snprintf(parent, sizeof(parent), "/"); } else if (strncmp(argv[1], "/", 1) == 0) { ret = snprintf(parent, sizeof(parent), "%s/", argv[1]); } else { ret = snprintf(parent, sizeof(parent), "/%s", argv[1]); } if ((ret < 0) || (ret >= sizeof(parent))) { *errmsg = safe_asprintf("Parent path exceeds PATH_MAX"); return ACK_ERROR_UNKNOWN; } print_playlists = 0; if ((strncmp(parent, "/", 1) == 0 && strlen(parent) == 1)) { /* * Special handling necessary if the root directory '/' is given. * In this case additional to the directory contents the stored playlists will be returned. * This behavior is deprecated in the mpd protocol but clients like ncmpccp or ympd uses it. */ print_playlists = 1; } // Load dir-id from db for parent-path dir_id = db_directory_id_byvirtualpath(parent); if (dir_id == 0) { *errmsg = safe_asprintf("Directory info not found for virtual-path '%s'", parent); return ACK_ERROR_NO_EXIST; } ret = mpd_add_directory(evbuf, dir_id, 0, 1, errmsg); // If the root directory was passed as argument add the stored playlists to the response if (ret == 0 && print_playlists) { return mpd_command_listplaylists(evbuf, argc, argv, errmsg, ctx); } return ret; } /* * Command handler function for 'listfiles' * * This command should list all files including files that are not part of the library. We do not support this * and only report files in the library. */ static int mpd_command_listfiles(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { return mpd_command_lsinfo(evbuf, argc, argv, errmsg, ctx); } /* * Command handler function for 'search' * Lists any song that matches the given list of arguments. Arguments are pairs of TYPE and WHAT, where * TYPE is the tag that contains WHAT (case insensitiv). * * TYPE can also be one of the special parameter: * - any: checks all tags * - file: checks the virtual_path * - base: restricts result to the given directory * - modified-since (not supported) * - window: limits result to the given range of "START:END" * * Example request: "search artist foo album bar" */ static int mpd_command_search(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params qp; struct db_media_file_info dbmfi; int ret; if (argc < 3 || ((argc - 1) % 2) != 0) { *errmsg = safe_asprintf("Missing argument(s) for command 'search'"); return ACK_ERROR_ARG; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_ITEMS; qp.sort = S_NAME; qp.idx_type = I_NONE; parse_filter_window_params(argc - 1, argv + 1, false, &qp); ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free(qp.filter); *errmsg = safe_asprintf("Could not start query"); return ACK_ERROR_UNKNOWN; } while ((ret = db_query_fetch_file(&dbmfi, &qp)) == 0) { ret = mpd_add_db_media_file_info(evbuf, &dbmfi); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error adding song to the evbuffer, song id: %s\n", dbmfi.id); } } db_query_end(&qp); free(qp.filter); return 0; } static int mpd_command_searchadd(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct query_params qp; struct player_status status; int ret; if (argc < 3 || ((argc - 1) % 2) != 0) { *errmsg = safe_asprintf("Missing argument(s) for command 'search'"); return ACK_ERROR_ARG; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_ITEMS; qp.sort = S_ARTIST; qp.idx_type = I_NONE; parse_filter_window_params(argc - 1, argv + 1, false, &qp); player_get_status(&status); ret = db_queue_add_by_query(&qp, status.shuffle, status.item_id, -1, NULL, NULL); free(qp.filter); if (ret < 0) { *errmsg = safe_asprintf("Failed to add songs to playlist"); return ACK_ERROR_UNKNOWN; } return 0; } /* * Command handler function for 'update' * Initiates an init-rescan (scans for new files) */ static int mpd_command_update(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { if (argc > 1 && strlen(argv[1]) > 0) { *errmsg = safe_asprintf("Update for specific uri not supported for command 'update'"); return ACK_ERROR_ARG; } library_rescan(0); evbuffer_add(evbuf, "updating_db: 1\n", 15); return 0; } static int mpd_sticker_get(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, const char *virtual_path) { struct media_file_info *mfi = NULL; uint32_t rating; if (strcmp(argv[4], "rating") != 0) { *errmsg = safe_asprintf("no such sticker"); return ACK_ERROR_NO_EXIST; } mfi = db_file_fetch_byvirtualpath(virtual_path); if (!mfi) { DPRINTF(E_LOG, L_MPD, "Virtual path not found: %s\n", virtual_path); *errmsg = safe_asprintf("unknown sticker domain"); return ACK_ERROR_ARG; } if (mfi->rating > 0) { rating = mfi->rating / MPD_RATING_FACTOR; evbuffer_add_printf(evbuf, "sticker: rating=%d\n", rating); } free_mfi(mfi, 0); return 0; } static int mpd_sticker_set(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, const char *virtual_path) { uint32_t rating; int ret = 0; if (strcmp(argv[4], "rating") != 0) { *errmsg = safe_asprintf("no such sticker"); return ACK_ERROR_NO_EXIST; } ret = safe_atou32(argv[5], &rating); if (ret < 0) { *errmsg = safe_asprintf("rating '%s' doesn't convert to integer", argv[5]); return ACK_ERROR_ARG; } rating *= MPD_RATING_FACTOR; if (rating > DB_FILES_RATING_MAX) { *errmsg = safe_asprintf("rating '%s' is greater than maximum value allowed", argv[5]); return ACK_ERROR_ARG; } ret = db_file_rating_update_byvirtualpath(virtual_path, rating); if (ret <= 0) { *errmsg = safe_asprintf("Invalid path '%s'", virtual_path); return ACK_ERROR_ARG; } return 0; } static int mpd_sticker_delete(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, const char *virtual_path) { int ret = 0; if (strcmp(argv[4], "rating") != 0) { *errmsg = safe_asprintf("no such sticker"); return ACK_ERROR_NO_EXIST; } ret = db_file_rating_update_byvirtualpath(virtual_path, 0); if (ret <= 0) { *errmsg = safe_asprintf("Invalid path '%s'", virtual_path); return ACK_ERROR_ARG; } return 0; } static int mpd_sticker_list(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, const char *virtual_path) { struct media_file_info *mfi = NULL; uint32_t rating; mfi = db_file_fetch_byvirtualpath(virtual_path); if (!mfi) { DPRINTF(E_LOG, L_MPD, "Virtual path not found: %s\n", virtual_path); *errmsg = safe_asprintf("unknown sticker domain"); return ACK_ERROR_ARG; } if (mfi->rating > 0) { rating = mfi->rating / MPD_RATING_FACTOR; evbuffer_add_printf(evbuf, "sticker: rating=%d\n", rating); } free_mfi(mfi, 0); /* |:todo:| real sticker implementation */ return 0; } static int mpd_sticker_find(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, const char *virtual_path) { struct query_params qp; struct db_media_file_info dbmfi; uint32_t rating = 0; uint32_t rating_arg = 0; const char *operator; int ret = 0; if (strcmp(argv[4], "rating") != 0) { *errmsg = safe_asprintf("no such sticker"); return ACK_ERROR_NO_EXIST; } if (argc == 6) { *errmsg = safe_asprintf("not enough arguments for 'sticker find'"); return ACK_ERROR_ARG; } if (argc > 6) { if (strcmp(argv[5], "=") != 0 && strcmp(argv[5], ">") != 0 && strcmp(argv[5], "<") != 0) { *errmsg = safe_asprintf("invalid operator '%s' given to 'sticker find'", argv[5]); return ACK_ERROR_ARG; } operator = argv[5]; ret = safe_atou32(argv[6], &rating_arg); if (ret < 0) { *errmsg = safe_asprintf("rating '%s' doesn't convert to integer", argv[6]); return ACK_ERROR_ARG; } rating_arg *= MPD_RATING_FACTOR; } else { operator = ">"; rating_arg = 0; } memset(&qp, 0, sizeof(struct query_params)); qp.type = Q_ITEMS; qp.sort = S_VPATH; qp.idx_type = I_NONE; qp.filter = db_mprintf("(f.virtual_path LIKE '%s%%' AND f.rating > 0 AND f.rating %s %d)", virtual_path, operator, rating_arg); if (!qp.filter) { *errmsg = safe_asprintf("Out of memory"); ret = ACK_ERROR_UNKNOWN; return ret; } ret = db_query_start(&qp); if (ret < 0) { db_query_end(&qp); free(qp.filter); *errmsg = safe_asprintf("Could not start query"); ret = ACK_ERROR_UNKNOWN; return ret; } while ((ret = db_query_fetch_file(&dbmfi, &qp)) == 0) { ret = safe_atou32(dbmfi.rating, &rating); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error rating=%s doesn't convert to integer, song id: %s\n", dbmfi.rating, dbmfi.id); continue; } rating /= MPD_RATING_FACTOR; ret = evbuffer_add_printf(evbuf, "file: %s\n" "sticker: rating=%d\n", (dbmfi.virtual_path + 1), rating); if (ret < 0) DPRINTF(E_LOG, L_MPD, "Error adding song to the evbuffer, song id: %s\n", dbmfi.id); } db_query_end(&qp); free(qp.filter); return 0; } struct mpd_sticker_command { const char *cmd; int (*handler)(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, const char *virtual_path); int need_args; }; static struct mpd_sticker_command mpd_sticker_handlers[] = { /* sticker command | handler function | minimum argument count */ { "get", mpd_sticker_get, 5 }, { "set", mpd_sticker_set, 6 }, { "delete", mpd_sticker_delete, 5 }, { "list", mpd_sticker_list, 4 }, { "find", mpd_sticker_find, 5 }, { NULL, NULL, 0 }, }; /* * Command handler function for 'sticker' * * sticker get "noth here" rating * ACK [2@0] {sticker} unknown sticker domain * * sticker get song "Al Cohn & Shorty Rogers/East Coast - West Coast Scene/04 Shorty Rogers - Cool Sunshine.flac" rating * ACK [50@0] {sticker} no such sticker * * sticker get song "Al Cohn & Shorty Rogers/East Coast - West Coast Scene/03 Al Cohn - Serenade For Kathy.flac" rating * sticker: rating=8 * OK * * From cantata: * sticker set song "file:/srv/music/VA/The Electro Swing Revolution Vol 3 1 - Hop, Hop, Hop/13 Mr. Hotcut - You Are.mp3" rating "6" * OK */ static int mpd_command_sticker(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct mpd_sticker_command *cmd_param = NULL; // Quell compiler warning about uninitialized use of cmd_param char *virtual_path = NULL; int i; int ret; if (strcmp(argv[2], "song") != 0) { *errmsg = safe_asprintf("unknown sticker domain"); return ACK_ERROR_ARG; } for (i = 0; i < (sizeof(mpd_sticker_handlers) / sizeof(struct mpd_sticker_command)); ++i) { cmd_param = &mpd_sticker_handlers[i]; if (cmd_param->cmd && strcmp(argv[1], cmd_param->cmd) == 0) break; } if (!cmd_param->cmd) { *errmsg = safe_asprintf("bad request"); return ACK_ERROR_ARG; } if (argc < cmd_param->need_args) { *errmsg = safe_asprintf("not enough arguments"); return ACK_ERROR_ARG; } virtual_path = prepend_slash(argv[3]); ret = cmd_param->handler(evbuf, argc, argv, errmsg, virtual_path); free(virtual_path); return ret; } /* static int mpd_command_rescan(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int ret; if (argc > 1) { DPRINTF(E_LOG, L_MPD, "Rescan for specific uri not supported for command 'rescan'\n"); *errmsg = safe_asprintf("Rescan for specific uri not supported for command 'rescan'"); return ACK_ERROR_ARG; } filescanner_trigger_fullrescan(); evbuffer_add(evbuf, "updating_db: 1\n", 15); return 0; } */ static int mpd_command_password(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { char *required_password; char *supplied_password = ""; int unrequired; if (argc > 1) { supplied_password = argv[1]; } required_password = cfg_getstr(cfg_getsec(cfg, "library"), "password"); unrequired = !required_password || required_password[0] == '\0'; if (unrequired || strcmp(supplied_password, required_password) == 0) { DPRINTF(E_DBG, L_MPD, "Authentication succeeded with supplied password: %s%s\n", supplied_password, unrequired ? " although no password is required" : ""); return 0; } DPRINTF(E_LOG, L_MPD, "Authentication failed with supplied password: %s" " for required password: %s\n", supplied_password, required_password); *errmsg = safe_asprintf("Wrong password. Authentication failed."); return ACK_ERROR_PASSWORD; } /* * Callback function for the 'player_speaker_enumerate' function. * Expect a struct output_get_param as argument and allocates a struct output if * the shortid of output_get_param matches the given speaker/output spk. */ static void output_get_cb(struct player_speaker_info *spk, void *arg) { struct output_get_param *param = arg; if (!param->output && param->shortid == (unsigned short) spk->id) { CHECK_NULL(L_MPD, param->output = calloc(1, sizeof(struct output))); param->output->id = spk->id; param->output->shortid = (unsigned short) spk->id; param->output->name = strdup(spk->name); param->output->selected = spk->selected; DPRINTF(E_DBG, L_MPD, "Output found: shortid %d, id %" PRIu64 ", name '%s', selected %d\n", param->output->shortid, param->output->id, param->output->name, param->output->selected); } } /* * Command handler function for 'disableoutput' * Expects argument argv[1] to be the id of the speaker to disable. */ static int mpd_command_disableoutput(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct output_get_param param; uint32_t num; int ret; ret = safe_atou32(argv[1], &num); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } memset(¶m, 0, sizeof(struct output_get_param)); param.shortid = num; player_speaker_enumerate(output_get_cb, ¶m); if (param.output && param.output->selected) { ret = player_speaker_disable(param.output->id); free_output(param.output); if (ret < 0) { *errmsg = safe_asprintf("Speakers deactivation failed: %d", num); return ACK_ERROR_UNKNOWN; } } return 0; } /* * Command handler function for 'enableoutput' * Expects argument argv[1] to be the id of the speaker to enable. */ static int mpd_command_enableoutput(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct output_get_param param; uint32_t num; int ret; ret = safe_atou32(argv[1], &num); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } memset(¶m, 0, sizeof(struct output_get_param)); param.shortid = num; player_speaker_enumerate(output_get_cb, ¶m); if (param.output && !param.output->selected) { ret = player_speaker_enable(param.output->id); free_output(param.output); if (ret < 0) { *errmsg = safe_asprintf("Speakers deactivation failed: %d", num); return ACK_ERROR_UNKNOWN; } } return 0; } /* * Command handler function for 'toggleoutput' * Expects argument argv[1] to be the id of the speaker to enable/disable. */ static int mpd_command_toggleoutput(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { struct output_get_param param; uint32_t num; int ret; ret = safe_atou32(argv[1], &num); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } memset(¶m, 0, sizeof(struct output_get_param)); param.shortid = num; player_speaker_enumerate(output_get_cb, ¶m); if (param.output) { if (param.output->selected) ret = player_speaker_disable(param.output->id); else ret = player_speaker_enable(param.output->id); free_output(param.output); if (ret < 0) { *errmsg = safe_asprintf("Toggle speaker failed: %d", num); return ACK_ERROR_UNKNOWN; } } return 0; } /* * Callback function for the 'outputs' command. * Gets called for each available speaker and prints the speaker information to the evbuffer given in *arg. * * Example output: * outputid: 0 * outputname: Computer * outputenabled: 1 * outputvolume: 50 */ static void speaker_enum_cb(struct player_speaker_info *spk, void *arg) { struct evbuffer *evbuf; evbuf = (struct evbuffer *)arg; evbuffer_add_printf(evbuf, "outputid: %d\n" "outputname: %s\n" "outputenabled: %d\n" "outputvolume: %d\n", (unsigned short) spk->id, spk->name, spk->selected, spk->absvol); } /* * Command handler function for 'output' * Returns a lists with the avaiable speakers. */ static int mpd_command_outputs(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { player_speaker_enumerate(speaker_enum_cb, evbuf); return 0; } static int outputvolume_set(uint32_t shortid, int volume, char **errmsg) { struct output_get_param param; int ret; memset(¶m, 0, sizeof(struct output_get_param)); param.shortid = shortid; player_speaker_enumerate(output_get_cb, ¶m); if (param.output) { ret = player_volume_setabs_speaker(param.output->id, volume); free_output(param.output); if (ret < 0) { *errmsg = safe_asprintf("Setting volume to %d for speaker with short-id %d failed", volume, shortid); return ACK_ERROR_UNKNOWN; } } else { *errmsg = safe_asprintf("No speaker found for short id: %d", shortid); return ACK_ERROR_UNKNOWN; } return 0; } static int mpd_command_outputvolume(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { uint32_t shortid; int volume; int ret; ret = safe_atou32(argv[1], &shortid); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]); return ACK_ERROR_ARG; } ret = safe_atoi32(argv[2], &volume); if (ret < 0) { *errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[2]); return ACK_ERROR_ARG; } ret = outputvolume_set(shortid, volume, errmsg); return ret; } static void channel_outputvolume(const char *message) { uint32_t shortid; int volume; char *tmp; char *ptr; char *errmsg = NULL; int ret; tmp = strdup(message); ptr = strrchr(tmp, ':'); if (!ptr) { free(tmp); DPRINTF(E_LOG, L_MPD, "Failed to parse output id and volume from message '%s' (expected format: \"output-id:volume\"\n", message); return; } *ptr = '\0'; ret = safe_atou32(tmp, &shortid); if (ret < 0) { free(tmp); DPRINTF(E_LOG, L_MPD, "Failed to parse output id from message: '%s'\n", message); return; } ret = safe_atoi32((ptr + 1), &volume); if (ret < 0) { free(tmp); DPRINTF(E_LOG, L_MPD, "Failed to parse volume from message: '%s'\n", message); return; } outputvolume_set(shortid, volume, &errmsg); if (errmsg) DPRINTF(E_LOG, L_MPD, "Failed to set output volume from message: '%s' (error='%s')\n", message, errmsg); free(tmp); } static void channel_pairing(const char *message) { remote_pairing_kickoff((char **)&message); } static void channel_verification(const char *message) { player_raop_verification_kickoff((char **)&message); } struct mpd_channel { /* The channel name */ const char *channel; /* * The function to execute the sendmessage command for a specific channel * * @param message message received on this channel */ void (*handler)(const char *message); }; static struct mpd_channel mpd_channels[] = { /* channel | handler function */ { "outputvolume", channel_outputvolume }, { "pairing", channel_pairing }, { "verification", channel_verification }, { NULL, NULL }, }; /* * Finds the channel handler for the given channel name * * @param name channel name from sendmessage command * @return the channel or NULL if it is an unknown/unsupported channel */ static struct mpd_channel * mpd_find_channel(const char *name) { int i; for (i = 0; mpd_channels[i].handler; i++) { if (0 == strcmp(name, mpd_channels[i].channel)) { return &mpd_channels[i]; } } return NULL; } static int mpd_command_channels(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int i; for (i = 0; mpd_channels[i].handler; i++) { evbuffer_add_printf(evbuf, "channel: %s\n", mpd_channels[i].channel); } return 0; } static int mpd_command_sendmessage(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { const char *channelname; const char *message; struct mpd_channel *channel; if (argc < 3) { *errmsg = safe_asprintf("Missing argument for command 'sendmessage'"); return ACK_ERROR_ARG; } channelname = argv[1]; message = argv[2]; channel = mpd_find_channel(channelname); if (!channel) { // Just ignore the message, only log an error message DPRINTF(E_LOG, L_MPD, "Unsupported channel '%s'\n", channelname); return 0; } channel->handler(message); return 0; } /* * Dummy function to handle commands that are not supported and should * not raise an error. */ static int mpd_command_ignore(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { //do nothing DPRINTF(E_DBG, L_MPD, "Ignore command %s\n", argv[0]); return 0; } static int mpd_command_commands(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx); /* * Command handler function for 'tagtypes' * Returns a lists with supported tags in the form: * tagtype: Artist */ static int mpd_command_tagtypes(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int i; for (i = 0; i < ARRAY_SIZE(tagtypes); i++) { if (tagtypes[i].type != MPD_TYPE_SPECIAL) evbuffer_add_printf(evbuf, "tagtype: %s\n", tagtypes[i].tag); } return 0; } /* * Command handler function for 'urlhandlers' * Returns a lists with supported tags in the form: * handler: protocol:// */ static int mpd_command_urlhandlers(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { evbuffer_add_printf(evbuf, "handler: http://\n" // handlers supported by MPD 0.19.12 // "handler: https://\n" // "handler: mms://\n" // "handler: mmsh://\n" // "handler: mmst://\n" // "handler: mmsu://\n" // "handler: gopher://\n" // "handler: rtp://\n" // "handler: rtsp://\n" // "handler: rtmp://\n" // "handler: rtmpt://\n" // "handler: rtmps://\n" // "handler: smb://\n" // "handler: nfs://\n" // "handler: cdda://\n" // "handler: alsa://\n" ); return 0; } /* * Command handler function for 'decoders' * MPD returns the decoder plugins with their supported suffix and mime types. * * The server only uses libav/ffmepg for decoding and does not support decoder plugins, * therefor the function reports only ffmpeg as available. */ static int mpd_command_decoders(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int i; evbuffer_add_printf(evbuf, "plugin: ffmpeg\n"); for (i = 0; ffmpeg_suffixes[i]; i++) { evbuffer_add_printf(evbuf, "suffix: %s\n", ffmpeg_suffixes[i]); } for (i = 0; ffmpeg_mime_types[i]; i++) { evbuffer_add_printf(evbuf, "mime_type: %s\n", ffmpeg_mime_types[i]); } return 0; } struct mpd_command { /* The command name */ const char *mpdcommand; /* * The function to execute the command * * @param evbuf the response event buffer * @param argc number of arguments in argv * @param argv argument array, first entry is the commandname * @param errmsg error message set by this function if an error occured * @return 0 if successful, one of ack values if an error occured */ int (*handler)(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx); int min_argc; }; static struct mpd_command mpd_handlers[] = { /* commandname | handler function | minimum argument count*/ // Commands for querying status { "clearerror", mpd_command_ignore, -1 }, { "currentsong", mpd_command_currentsong, -1 }, { "idle", mpd_command_idle, -1 }, { "noidle", mpd_command_noidle, -1 }, { "status", mpd_command_status, -1 }, { "stats", mpd_command_stats, -1 }, // Playback options { "consume", mpd_command_consume, 2 }, { "crossfade", mpd_command_ignore, -1 }, { "mixrampdb", mpd_command_ignore, -1 }, { "mixrampdelay", mpd_command_ignore, -1 }, { "random", mpd_command_random, 2 }, { "repeat", mpd_command_repeat, 2 }, { "setvol", mpd_command_setvol, 2 }, { "single", mpd_command_single, 2 }, { "replay_gain_mode", mpd_command_ignore, -1 }, { "replay_gain_status", mpd_command_replay_gain_status, -1 }, { "volume", mpd_command_volume, 2 }, // Controlling playback { "next", mpd_command_next, -1 }, { "pause", mpd_command_pause, -1 }, { "play", mpd_command_play, -1 }, { "playid", mpd_command_playid, -1 }, { "previous", mpd_command_previous, -1 }, { "seek", mpd_command_seek, 3 }, { "seekid", mpd_command_seekid, 3 }, { "seekcur", mpd_command_seekcur, 2 }, { "stop", mpd_command_stop, -1 }, // The current playlist { "add", mpd_command_add, 2 }, { "addid", mpd_command_addid, 2 }, { "clear", mpd_command_clear, -1 }, { "delete", mpd_command_delete, -1 }, { "deleteid", mpd_command_deleteid, 2 }, { "move", mpd_command_move, 3 }, { "moveid", mpd_command_moveid, 3 }, { "playlist", mpd_command_playlistinfo, -1 }, // According to the mpd protocol the use of "playlist" is deprecated { "playlistfind", mpd_command_playlistfind, -1 }, { "playlistid", mpd_command_playlistid, -1 }, { "playlistinfo", mpd_command_playlistinfo, -1 }, { "playlistsearch", mpd_command_playlistsearch, -1 }, { "plchanges", mpd_command_plchanges, 2 }, { "plchangesposid", mpd_command_plchangesposid, 2 }, // { "prio", mpd_command_prio, -1 }, // { "prioid", mpd_command_prioid, -1 }, // { "rangeid", mpd_command_rangeid, -1 }, // { "shuffle", mpd_command_shuffle, -1 }, // { "swap", mpd_command_swap, -1 }, // { "swapid", mpd_command_swapid, -1 }, // { "addtagid", mpd_command_addtagid, -1 }, // { "cleartagid", mpd_command_cleartagid, -1 }, // Stored playlists { "listplaylist", mpd_command_listplaylist, 2 }, { "listplaylistinfo", mpd_command_listplaylistinfo, 2 }, { "listplaylists", mpd_command_listplaylists, -1 }, { "load", mpd_command_load, 2 }, { "playlistadd", mpd_command_playlistadd, 3 }, // { "playlistclear", mpd_command_playlistclear, -1 }, // { "playlistdelete", mpd_command_playlistdelete, -1 }, // { "playlistmove", mpd_command_playlistmove, -1 }, // { "rename", mpd_command_rename, -1 }, { "rm", mpd_command_rm, 2 }, { "save", mpd_command_save, 2 }, // The music database { "count", mpd_command_count, -1 }, { "find", mpd_command_find, -1 }, { "findadd", mpd_command_findadd, -1 }, { "list", mpd_command_list, -1 }, { "listall", mpd_command_listall, -1 }, { "listallinfo", mpd_command_listallinfo, -1 }, { "listfiles", mpd_command_listfiles, -1 }, { "lsinfo", mpd_command_lsinfo, -1 }, // { "readcomments", mpd_command_readcomments, -1 }, { "search", mpd_command_search, -1 }, { "searchadd", mpd_command_searchadd, -1 }, // { "searchaddpl", mpd_command_searchaddpl, -1 }, { "update", mpd_command_update, -1 }, // { "rescan", mpd_command_rescan, -1 }, // Mounts and neighbors // { "mount", mpd_command_mount, -1 }, // { "unmount", mpd_command_unmount, -1 }, // { "listmounts", mpd_command_listmounts, -1 }, // { "listneighbors", mpd_command_listneighbors, -1 }, // Stickers { "sticker", mpd_command_sticker, 4 }, // Connection settings { "close", mpd_command_ignore, -1 }, // { "kill", mpd_command_kill, -1 }, { "password", mpd_command_password, -1 }, { "ping", mpd_command_ignore, -1 }, // Audio output devices { "disableoutput", mpd_command_disableoutput, 2 }, { "enableoutput", mpd_command_enableoutput, 2 }, { "toggleoutput", mpd_command_toggleoutput, 2 }, { "outputs", mpd_command_outputs, -1 }, // Reflection // { "config", mpd_command_config, -1 }, { "commands", mpd_command_commands, -1 }, { "notcommands", mpd_command_ignore, -1 }, { "tagtypes", mpd_command_tagtypes, -1 }, { "urlhandlers", mpd_command_urlhandlers, -1 }, { "decoders", mpd_command_decoders, -1 }, // Client to client { "subscribe", mpd_command_ignore, -1 }, { "unsubscribe", mpd_command_ignore, -1 }, { "channels", mpd_command_channels, -1 }, { "readmessages", mpd_command_ignore, -1 }, { "sendmessage", mpd_command_sendmessage, -1 }, // Custom commands (not supported by mpd) { "outputvolume", mpd_command_outputvolume, 3 }, // NULL command to terminate loop { NULL, NULL, -1 } }; /* * Finds the command handler for the given command name * * @param name the name of the command * @return the command or NULL if it is an unknown/unsupported command */ static struct mpd_command* mpd_find_command(const char *name) { int i; for (i = 0; mpd_handlers[i].handler; i++) { if (0 == strcmp(name, mpd_handlers[i].mpdcommand)) { return &mpd_handlers[i]; } } return NULL; } static int mpd_command_commands(struct evbuffer *evbuf, int argc, char **argv, char **errmsg, struct mpd_client_ctx *ctx) { int i; for (i = 0; mpd_handlers[i].handler; i++) { evbuffer_add_printf(evbuf, "command: %s\n", mpd_handlers[i].mpdcommand); } return 0; } /* * The read callback function is invoked if a complete command sequence was received from the client * (see mpd_input_filter function). * * @param bev the buffer event * @param ctx used for authentication */ static void mpd_read_cb(struct bufferevent *bev, void *ctx) { struct evbuffer *input; struct evbuffer *output; int ret; int ncmd; char *line; char *errmsg; struct mpd_command *command; enum command_list_type listtype; int idle_cmd; int close_cmd; char *argv[COMMAND_ARGV_MAX]; int argc; struct mpd_client_ctx *client_ctx = (struct mpd_client_ctx *)ctx; /* Get the input evbuffer, contains the command sequence received from the client */ input = bufferevent_get_input(bev); /* Get the output evbuffer, used to send the server response to the client */ output = bufferevent_get_output(bev); DPRINTF(E_SPAM, L_MPD, "Received MPD command sequence\n"); idle_cmd = 0; close_cmd = 0; listtype = COMMAND_LIST_NONE; ncmd = 0; ret = -1; while ((line = evbuffer_readln(input, NULL, EVBUFFER_EOL_ANY))) { DPRINTF(E_DBG, L_MPD, "MPD message: %s\n", line); // Split the read line into command name and arguments ret = mpd_parse_args(line, &argc, argv); if (ret != 0 || argc <= 0) { // Error handling for argument parsing error DPRINTF(E_LOG, L_MPD, "Error parsing arguments for MPD message: %s\n", line); errmsg = safe_asprintf("Error parsing arguments"); ret = ACK_ERROR_ARG; evbuffer_add_printf(output, "ACK [%d@%d] {%s} %s\n", ret, ncmd, "unkown", errmsg); free(errmsg); free(line); break; } /* * Check if it is a list command */ if (0 == strcmp(argv[0], "command_list_ok_begin")) { listtype = COMMAND_LIST_OK; free(line); continue; } else if (0 == strcmp(argv[0], "command_list_begin")) { listtype = COMMAND_LIST; free(line); continue; } else if (0 == strcmp(argv[0], "command_list_end")) { listtype = COMMAND_LIST_END; free(line); break; } else if (0 == strcmp(argv[0], "idle")) idle_cmd = 1; else if (0 == strcmp(argv[0], "noidle")) idle_cmd = 1; else if (0 == strcmp(argv[0], "close")) close_cmd = 1; /* * Find the command handler and execute the command function */ command = mpd_find_command(argv[0]); if (command == NULL) { errmsg = safe_asprintf("Unsupported command '%s'", argv[0]); ret = ACK_ERROR_UNKNOWN; } else if (command->min_argc > argc) { errmsg = safe_asprintf("Missing argument(s) for command '%s', expected %d, given %d", argv[0], command->min_argc, argc); ret = ACK_ERROR_ARG; } else if (strcmp(command->mpdcommand, "password") == 0) { ret = command->handler(output, argc, argv, &errmsg, client_ctx); client_ctx->authenticated = ret == 0; } else if (!client_ctx->authenticated) { errmsg = safe_asprintf("Not authenticated"); ret = ACK_ERROR_PERMISSION; } else ret = command->handler(output, argc, argv, &errmsg, client_ctx); /* * If an error occurred, add the ACK line to the response buffer and exit the loop */ if (ret != 0) { DPRINTF(E_LOG, L_MPD, "Error executing command '%s': %s\n", argv[0], errmsg); evbuffer_add_printf(output, "ACK [%d@%d] {%s} %s\n", ret, ncmd, argv[0], errmsg); free(errmsg); free(line); break; } /* * If the command sequence started with command_list_ok_begin, add a list_ok line to the * response buffer after each command output. */ if (listtype == COMMAND_LIST_OK) { evbuffer_add(output, "list_OK\n", 8); } /* * If everything was successful add OK line to signal clients end of command message. */ else if (listtype == COMMAND_LIST_NONE && idle_cmd == 0 && close_cmd == 0) { evbuffer_add(output, "OK\n", 3); } free(line); ncmd++; } DPRINTF(E_SPAM, L_MPD, "Finished MPD command sequence: %d\n", ret); /* * If everything was successful and we are processing a command list, add OK line to signal * clients end of message. * If an error occurred the necessary ACK line should already be added to the response buffer. */ if (ret == 0 && close_cmd == 0 && listtype == COMMAND_LIST_END) { evbuffer_add(output, "OK\n", 3); } if (close_cmd) { /* * Freeing the bufferevent closes the connection, if it was * opened with BEV_OPT_CLOSE_ON_FREE. * Since bufferevent is reference-counted, it will happen as * soon as possible, not necessarily immediately. */ bufferevent_free(bev); } } /* * Callback when an event occurs on the bufferevent */ static void mpd_event_cb(struct bufferevent *bev, short events, void *ctx) { if (events & BEV_EVENT_ERROR) { DPRINTF(E_LOG, L_MPD, "Error from bufferevent: %s\n", evutil_socket_error_to_string(EVUTIL_SOCKET_ERROR())); } if (events & (BEV_EVENT_EOF | BEV_EVENT_ERROR)) { bufferevent_free(bev); } } /* * The input filter buffer callback checks if the data received from the client is a complete command sequence. * A command sequence has end with '\n' and if it starts with "command_list_begin\n" or "command_list_ok_begin\n" * the last line has to be "command_list_end\n". * * @param src evbuffer to read data from (contains the data received from the client) * @param dst evbuffer to write data to (this is the evbuffer for the read callback) * @param lim the upper bound of bytes to add to destination * @param state write mode * @param ctx (not used) * @return BEV_OK if a complete command sequence was received otherwise BEV_NEED_MORE */ static enum bufferevent_filter_result mpd_input_filter(struct evbuffer *src, struct evbuffer *dst, ev_ssize_t lim, enum bufferevent_flush_mode state, void *ctx) { struct evbuffer_ptr p; char *line; int ret; while ((line = evbuffer_readln(src, NULL, EVBUFFER_EOL_ANY))) { ret = evbuffer_add_printf(dst, "%s\n", line); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Error adding line to buffer: '%s'\n", line); free(line); return BEV_ERROR; } free(line); } if (evbuffer_get_length(src) > 0) { DPRINTF(E_DBG, L_MPD, "Message incomplete, waiting for more data\n"); return BEV_NEED_MORE; } p = evbuffer_search(dst, "command_list_begin", 18, NULL); if (p.pos < 0) { p = evbuffer_search(dst, "command_list_ok_begin", 21, NULL); } if (p.pos >= 0) { p = evbuffer_search(dst, "command_list_end", 16, NULL); if (p.pos < 0) { DPRINTF(E_DBG, L_MPD, "Message incomplete (missing command_list_end), waiting for more data\n"); return BEV_NEED_MORE; } } return BEV_OK; } static const char * sockaddr_to_string(const struct sockaddr *address, char *addr_str, int addr_str_len) { struct sockaddr_in *addr; struct sockaddr_in6 *addr6; const char *ret; if (address->sa_family == AF_INET) { addr = (struct sockaddr_in *)address; ret = evutil_inet_ntop(AF_INET, &addr->sin_addr, addr_str, addr_str_len); } else if (address->sa_family == AF_INET6) { addr6 = (struct sockaddr_in6 *)address; ret = evutil_inet_ntop(AF_INET6, &addr6->sin6_addr, addr_str, addr_str_len); } else { ret = NULL; } return ret; } /* * The connection listener callback function is invoked when a new connection was received. * * @param listener the connection listener that received the connection * @param sock the new socket * @param address the address from which the connection was received * @param socklen the length of that address * @param ctx (not used) */ static void mpd_accept_conn_cb(struct evconnlistener *listener, evutil_socket_t sock, struct sockaddr *address, int socklen, void *ctx) { /* * For each new connection setup a new buffer event and wrap it around a filter event. * The filter event ensures, that the read callback on the buffer event is only invoked if a complete * command sequence from the client was received. */ struct event_base *base = evconnlistener_get_base(listener); struct bufferevent *bev = bufferevent_socket_new(base, sock, BEV_OPT_CLOSE_ON_FREE); char addr_str[INET6_ADDRSTRLEN]; struct mpd_client_ctx *client_ctx = calloc(1, sizeof(struct mpd_client_ctx)); if (!client_ctx) { DPRINTF(E_LOG, L_MPD, "Out of memory for command context\n"); bufferevent_free(bev); return; } client_ctx->authenticated = !cfg_getstr(cfg_getsec(cfg, "library"), "password"); if (!client_ctx->authenticated) { sockaddr_to_string(address, addr_str, sizeof(addr_str)); client_ctx->authenticated = net_peer_address_is_trusted(addr_str); } client_ctx->next = mpd_clients; mpd_clients = client_ctx; bev = bufferevent_filter_new(bev, mpd_input_filter, NULL, BEV_OPT_CLOSE_ON_FREE, free_mpd_client_ctx, client_ctx); bufferevent_setcb(bev, mpd_read_cb, NULL, mpd_event_cb, client_ctx); bufferevent_enable(bev, EV_READ | EV_WRITE); /* * According to the mpd protocol send "OK MPD \n" to the client, where version is the version * of the supported mpd protocol and not the server version. */ evbuffer_add(bufferevent_get_output(bev), "OK MPD 0.20.0\n", 14); client_ctx->evbuffer = bufferevent_get_output(bev); DPRINTF(E_INFO, L_MPD, "New mpd client connection accepted\n"); } /* * Error callback that gets called whenever an accept() call fails on the listener * @param listener the connection listener that received the connection * @param ctx (not used) */ static void mpd_accept_error_cb(struct evconnlistener *listener, void *ctx) { int err; err = EVUTIL_SOCKET_ERROR(); DPRINTF(E_LOG, L_MPD, "Error occured %d (%s) on the listener.\n", err, evutil_socket_error_to_string(err)); } static int mpd_notify_idle_client(struct mpd_client_ctx *client_ctx, short events) { if (!client_ctx->is_idle) { client_ctx->events |= events; return 1; } if (!(client_ctx->idle_events & events)) { DPRINTF(E_DBG, L_MPD, "Client not listening for events: %d\n", events); return 1; } if (events & LISTENER_DATABASE) evbuffer_add(client_ctx->evbuffer, "changed: database\n", 18); if (events & LISTENER_UPDATE) evbuffer_add(client_ctx->evbuffer, "changed: update\n", 16); if (events & LISTENER_QUEUE) evbuffer_add(client_ctx->evbuffer, "changed: playlist\n", 18); if (events & LISTENER_PLAYER) evbuffer_add(client_ctx->evbuffer, "changed: player\n", 16); if (events & LISTENER_VOLUME) evbuffer_add(client_ctx->evbuffer, "changed: mixer\n", 15); if (events & LISTENER_SPEAKER) evbuffer_add(client_ctx->evbuffer, "changed: output\n", 16); if (events & LISTENER_OPTIONS) evbuffer_add(client_ctx->evbuffer, "changed: options\n", 17); if (events & LISTENER_STORED_PLAYLIST) evbuffer_add(client_ctx->evbuffer, "changed: stored_playlist\n", 25); if (events & LISTENER_RATING) evbuffer_add(client_ctx->evbuffer, "changed: sticker\n", 17); evbuffer_add(client_ctx->evbuffer, "OK\n", 3); client_ctx->is_idle = false; client_ctx->idle_events = 0; client_ctx->events = 0; return 0; } static enum command_state mpd_notify_idle(void *arg, int *retval) { short event_mask; struct mpd_client_ctx *client; int i; event_mask = *(short *)arg; DPRINTF(E_DBG, L_MPD, "Notify clients waiting for idle results: %d\n", event_mask); i = 0; client = mpd_clients; while (client) { DPRINTF(E_DBG, L_MPD, "Notify client #%d\n", i); mpd_notify_idle_client(client, event_mask); client = client->next; i++; } *retval = 0; return COMMAND_END; } static void mpd_listener_cb(short event_mask) { short *ptr; ptr = (short *)malloc(sizeof(short)); *ptr = event_mask; DPRINTF(E_DBG, L_MPD, "Asynchronous listener callback called with event type %d.\n", event_mask); commands_exec_async(cmdbase, mpd_notify_idle, ptr); } /* * Callback function that handles http requests for artwork files * * Some MPD clients allow retrieval of local artwork by making http request for artwork * files. * * A request for the artwork of an item with virtual path "file:/path/to/example.mp3" looks * like: * GET http://:/path/to/cover.jpg * * Artwork is found by taking the uri and removing everything after the last '/'. The first * item in the library with a virtual path that matches *path/to* is used to read the artwork * file through the default artwork logic. */ static void artwork_cb(struct evhttp_request *req, void *arg) { struct evbuffer *evbuffer; struct evhttp_uri *decoded; const char *uri; const char *path; char *decoded_path; char *last_slash; int itemid; int format; if (evhttp_request_get_command(req) != EVHTTP_REQ_GET) { DPRINTF(E_LOG, L_MPD, "Unsupported request type for artwork\n"); evhttp_send_error(req, HTTP_BADMETHOD, "Method not allowed"); return; } uri = evhttp_request_get_uri(req); DPRINTF(E_DBG, L_MPD, "Got artwork request with uri '%s'\n", uri); decoded = evhttp_uri_parse(uri); if (!decoded) { DPRINTF(E_LOG, L_MPD, "Bad artwork request with uri '%s'\n", uri); evhttp_send_error(req, HTTP_BADREQUEST, 0); return; } path = evhttp_uri_get_path(decoded); if (!path) { DPRINTF(E_LOG, L_MPD, "Invalid path from artwork request with uri '%s'\n", uri); evhttp_send_error(req, HTTP_BADREQUEST, 0); evhttp_uri_free(decoded); return; } decoded_path = evhttp_uridecode(path, 0, NULL); if (!decoded_path) { DPRINTF(E_LOG, L_MPD, "Error decoding path from artwork request with uri '%s'\n", uri); evhttp_send_error(req, HTTP_BADREQUEST, 0); evhttp_uri_free(decoded); return; } last_slash = strrchr(decoded_path, '/'); if (last_slash) *last_slash = '\0'; DPRINTF(E_DBG, L_MPD, "Artwork request for path: %s\n", decoded_path); itemid = db_file_id_by_virtualpath_match(decoded_path); if (!itemid) { DPRINTF(E_WARN, L_MPD, "No item found for path '%s' from request uri '%s'\n", decoded_path, uri); evhttp_send_error(req, HTTP_NOTFOUND, "Document was not found"); evhttp_uri_free(decoded); free(decoded_path); return; } evbuffer = evbuffer_new(); if (!evbuffer) { DPRINTF(E_LOG, L_MPD, "Could not allocate an evbuffer for artwork request\n"); evhttp_send_error(req, HTTP_INTERNAL, "Document was not found"); evhttp_uri_free(decoded); free(decoded_path); return; } format = artwork_get_item(evbuffer, itemid, ART_DEFAULT_WIDTH, ART_DEFAULT_HEIGHT, 0); if (format < 0) { evhttp_send_error(req, HTTP_NOTFOUND, "Document was not found"); } else { switch (format) { case ART_FMT_PNG: evhttp_add_header(evhttp_request_get_output_headers(req), "Content-Type", "image/png"); break; default: evhttp_add_header(evhttp_request_get_output_headers(req), "Content-Type", "image/jpeg"); break; } evhttp_send_reply(req, HTTP_OK, "OK", evbuffer); } evbuffer_free(evbuffer); evhttp_uri_free(decoded); free(decoded_path); } /* Thread: main */ static int mpd_httpd_init(void) { unsigned short http_port; int ret; http_port = cfg_getint(cfg_getsec(cfg, "mpd"), "http_port"); if (http_port == 0) return 0; evhttpd = evhttp_new(evbase_mpd); if (!evhttpd) return -1; ret = net_evhttp_bind(evhttpd, http_port, "mpd artwork"); if (ret < 0) { evhttp_free(evhttpd); evhttpd = NULL; return -1; } evhttp_set_gencb(evhttpd, artwork_cb, NULL); return 0; } /* Thread: main */ static void mpd_httpd_deinit(void) { if (evhttpd) evhttp_free(evhttpd); evhttpd = NULL; } /* Thread: main */ int mpd_init(void) { unsigned short port; const char *pl_dir; int ret; port = cfg_getint(cfg_getsec(cfg, "mpd"), "port"); if (port <= 0) { DPRINTF(E_INFO, L_MPD, "MPD not enabled\n"); return 0; } CHECK_NULL(L_MPD, evbase_mpd = event_base_new()); CHECK_NULL(L_MPD, cmdbase = commands_base_new(evbase_mpd, NULL)); mpd_sockfd = net_bind(&port, SOCK_STREAM, "mpd"); if (mpd_sockfd < 0) { DPRINTF(E_LOG, L_MPD, "Could not bind mpd server to port %hu\n", port); goto bind_fail; } mpd_listener = evconnlistener_new(evbase_mpd, mpd_accept_conn_cb, NULL, 0, -1, mpd_sockfd); if (!mpd_listener) { DPRINTF(E_LOG, L_MPD, "Could not create connection listener for mpd clients on port %d\n", port); goto connew_fail; } evconnlistener_set_error_cb(mpd_listener, mpd_accept_error_cb); ret = mpd_httpd_init(); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Could not initialize HTTP artwork server\n"); goto httpd_fail; } allow_modifying_stored_playlists = cfg_getbool(cfg_getsec(cfg, "library"), "allow_modifying_stored_playlists"); pl_dir = cfg_getstr(cfg_getsec(cfg, "library"), "default_playlist_directory"); if (pl_dir) default_pl_dir = safe_asprintf("/file:%s", pl_dir); /* Handle deprecated config options */ if (0 < cfg_opt_size(cfg_getopt(cfg_getsec(cfg, "mpd"), "allow_modifying_stored_playlists"))) { DPRINTF(E_LOG, L_MPD, "Found deprecated option 'allow_modifying_stored_playlists' in section 'mpd', please update configuration file (move option to section 'library').\n"); allow_modifying_stored_playlists = cfg_getbool(cfg_getsec(cfg, "mpd"), "allow_modifying_stored_playlists"); } if (0 < cfg_opt_size(cfg_getopt(cfg_getsec(cfg, "mpd"), "default_playlist_directory"))) { DPRINTF(E_LOG, L_MPD, "Found deprecated option 'default_playlist_directory' in section 'mpd', please update configuration file (move option to section 'library').\n"); free(default_pl_dir); pl_dir = cfg_getstr(cfg_getsec(cfg, "mpd"), "default_playlist_directory"); if (pl_dir) default_pl_dir = safe_asprintf("/file:%s", pl_dir); } DPRINTF(E_INFO, L_MPD, "mpd thread init\n"); ret = pthread_create(&tid_mpd, NULL, mpd, NULL); if (ret < 0) { DPRINTF(E_LOG, L_MPD, "Could not spawn MPD thread: %s\n", strerror(errno)); goto thread_fail; } thread_setname(tid_mpd, "mpd"); mpd_clients = NULL; listener_add(mpd_listener_cb, MPD_ALL_IDLE_LISTENER_EVENTS); return 0; thread_fail: mpd_httpd_deinit(); httpd_fail: evconnlistener_free(mpd_listener); connew_fail: close(mpd_sockfd); bind_fail: commands_base_free(cmdbase); event_base_free(evbase_mpd); evbase_mpd = NULL; return -1; } /* Thread: main */ void mpd_deinit(void) { unsigned short port; int ret; port = cfg_getint(cfg_getsec(cfg, "mpd"), "port"); if (port <= 0) { DPRINTF(E_INFO, L_MPD, "MPD not enabled\n"); return; } commands_base_destroy(cmdbase); ret = pthread_join(tid_mpd, NULL); if (ret != 0) { DPRINTF(E_FATAL, L_MPD, "Could not join MPD thread: %s\n", strerror(errno)); return; } listener_remove(mpd_listener_cb); while (mpd_clients) { free_mpd_client_ctx(mpd_clients); } mpd_httpd_deinit(); evconnlistener_free(mpd_listener); close(mpd_sockfd); // Free event base (should free events too) event_base_free(evbase_mpd); free(default_pl_dir); }