/* the Music Player Daemon (MPD) * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com) * This project's homepage is: http://www.musicpd.org * * 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 */ #include "command.h" #include "player_control.h" #include "playlist.h" #include "ls.h" #include "directory.h" #include "directory_print.h" #include "database.h" #include "update.h" #include "volume.h" #include "stats.h" #include "permission.h" #include "buffer2array.h" #include "log.h" #include "stored_playlist.h" #include "ack.h" #include "audio.h" #include "dbUtils.h" #include "tag.h" #include "client.h" #include "tag_print.h" #include "path.h" #include "idle.h" #include "config.h" #ifdef ENABLE_SQLITE #include "sticker.h" #include "song_sticker.h" #endif #include <assert.h> #include <time.h> #include <stdlib.h> #include <errno.h> #define COMMAND_STATUS_VOLUME "volume" #define COMMAND_STATUS_STATE "state" #define COMMAND_STATUS_REPEAT "repeat" #define COMMAND_STATUS_RANDOM "random" #define COMMAND_STATUS_PLAYLIST "playlist" #define COMMAND_STATUS_PLAYLIST_LENGTH "playlistlength" #define COMMAND_STATUS_SONG "song" #define COMMAND_STATUS_SONGID "songid" #define COMMAND_STATUS_TIME "time" #define COMMAND_STATUS_BITRATE "bitrate" #define COMMAND_STATUS_ERROR "error" #define COMMAND_STATUS_CROSSFADE "xfade" #define COMMAND_STATUS_AUDIO "audio" #define COMMAND_STATUS_UPDATING_DB "updating_db" /* * The most we ever use is for search/find, and that limits it to the * number of tags we can have. Add one for the command, and one extra * to catch errors clients may send us */ #define COMMAND_ARGV_MAX (2+(TAG_NUM_OF_ITEM_TYPES*2)) /* if min: -1 don't check args * * if max: -1 no max args */ struct command { const char *cmd; unsigned permission; int min; int max; enum command_return (*handler)(struct client *client, int argc, char **argv); }; /* this should really be "need a non-negative integer": */ static const char need_positive[] = "need a positive integer"; /* no-op */ static const char need_range[] = "need a range"; /* FIXME: redundant error messages */ static const char check_integer[] = "\"%s\" is not a integer"; static const char need_integer[] = "need an integer"; static const char *current_command; static int command_list_num; void command_success(struct client *client) { client_puts(client, "OK\n"); } static void command_error_v(struct client *client, enum ack error, const char *fmt, va_list args) { assert(client != NULL); assert(current_command != NULL); client_printf(client, "ACK [%i@%i] {%s} ", (int)error, command_list_num, current_command); client_vprintf(client, fmt, args); client_puts(client, "\n"); current_command = NULL; } G_GNUC_PRINTF(3, 4) void command_error(struct client *client, enum ack error, const char *fmt, ...) { va_list args; va_start(args, fmt); command_error_v(client, error, fmt, args); va_end(args); } static bool G_GNUC_PRINTF(4, 5) check_uint32(struct client *client, uint32_t *dst, const char *s, const char *fmt, ...) { char *test; *dst = strtoul(s, &test, 10); if (*test != '\0') { va_list args; va_start(args, fmt); command_error_v(client, ACK_ERROR_ARG, fmt, args); va_end(args); return false; } return true; } static bool G_GNUC_PRINTF(4, 5) check_int(struct client *client, int *value_r, const char *s, const char *fmt, ...) { char *test; long value; value = strtol(s, &test, 10); if (*test != '\0') { va_list args; va_start(args, fmt); command_error_v(client, ACK_ERROR_ARG, fmt, args); va_end(args); return false; } #if LONG_MAX > INT_MAX if (value < INT_MIN || value > INT_MAX) { command_error(client, ACK_ERROR_ARG, "Number too large: %s", s); return false; } #endif *value_r = (int)value; return true; } static bool G_GNUC_PRINTF(5, 6) check_range(struct client *client, unsigned *value_r1, unsigned *value_r2, const char *s, const char *fmt, ...) { char *test, *test2; long value; value = strtol(s, &test, 10); if (*test != '\0' && *test != ':') { va_list args; va_start(args, fmt); command_error_v(client, ACK_ERROR_ARG, fmt, args); va_end(args); return false; } if (value == -1 && *test == 0) { /* compatibility with older MPD versions: specifying "-1" makes MPD display the whole list */ *value_r1 = 0; *value_r2 = UINT_MAX; return true; } if (value < 0) { command_error(client, ACK_ERROR_ARG, "Number is negative: %s", s); return false; } #if LONG_MAX > UINT_MAX if (value > UINT_MAX) { command_error(client, ACK_ERROR_ARG, "Number too large: %s", s); return false; } #endif *value_r1 = (unsigned)value; if (*test == ':') { value = strtol(++test, &test2, 10); if (*test2 != '\0' || test == test2) { va_list args; va_start(args, fmt); command_error_v(client, ACK_ERROR_ARG, fmt, args); va_end(args); return false; } if (value < 0) { command_error(client, ACK_ERROR_ARG, "Number is negative: %s", s); return false; } #if LONG_MAX > UINT_MAX if (value > UINT_MAX) { command_error(client, ACK_ERROR_ARG, "Number too large: %s", s); return false; } #endif *value_r2 = (unsigned)value; } else { *value_r2 = (unsigned)value + 1; } return true; } static bool check_unsigned(struct client *client, unsigned *value_r, const char *s) { unsigned long value; char *endptr; value = strtoul(s, &endptr, 10); if (*endptr != 0) { command_error(client, ACK_ERROR_ARG, "Integer expected: %s", s); return false; } if (value > UINT_MAX) { command_error(client, ACK_ERROR_ARG, "Number too large: %s", s); return false; } *value_r = (unsigned)value; return true; } static bool check_bool(struct client *client, bool *value_r, const char *s) { long value; char *endptr; value = strtol(s, &endptr, 10); if (*endptr != 0 || (value != 0 && value != 1)) { command_error(client, ACK_ERROR_ARG, "Boolean (0/1) expected: %s", s); return false; } *value_r = !!value; return true; } static enum command_return print_playlist_result(struct client *client, enum playlist_result result) { switch (result) { case PLAYLIST_RESULT_SUCCESS: return COMMAND_RETURN_OK; case PLAYLIST_RESULT_ERRNO: command_error(client, ACK_ERROR_SYSTEM, "%s", strerror(errno)); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_DENIED: command_error(client, ACK_ERROR_NO_EXIST, "Access denied"); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_NO_SUCH_SONG: command_error(client, ACK_ERROR_NO_EXIST, "No such song"); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_NO_SUCH_LIST: command_error(client, ACK_ERROR_NO_EXIST, "No such playlist"); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_LIST_EXISTS: command_error(client, ACK_ERROR_EXIST, "Playlist already exists"); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_BAD_NAME: command_error(client, ACK_ERROR_ARG, "playlist name is invalid: " "playlist names may not contain slashes," " newlines or carriage returns"); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_BAD_RANGE: command_error(client, ACK_ERROR_ARG, "Bad song index"); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_NOT_PLAYING: command_error(client, ACK_ERROR_PLAYER_SYNC, "Not playing"); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_TOO_LARGE: command_error(client, ACK_ERROR_PLAYLIST_MAX, "playlist is at the max size"); return COMMAND_RETURN_ERROR; case PLAYLIST_RESULT_DISABLED: command_error(client, ACK_ERROR_UNKNOWN, "stored playlist support is disabled"); return COMMAND_RETURN_ERROR; } assert(0); return COMMAND_RETURN_ERROR; } static void print_spl_list(struct client *client, GPtrArray *list) { for (unsigned i = 0; i < list->len; ++i) { struct stored_playlist_info *playlist = g_ptr_array_index(list, i); time_t t; #ifndef WIN32 struct tm tm; #endif char timestamp[32]; client_printf(client, "playlist: %s\n", playlist->name); t = playlist->mtime; strftime(timestamp, sizeof(timestamp), "%FT%TZ", #ifdef WIN32 gmtime(&t) #else gmtime_r(&t, &tm) #endif ); client_printf(client, "Last-Modified: %s\n", timestamp); } } static enum command_return handle_urlhandlers(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { if (client_get_uid(client) > 0) client_puts(client, "handler: file://\n"); print_supported_uri_schemes(client); return COMMAND_RETURN_OK; } static enum command_return handle_tagtypes(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { tag_print_types(client); return COMMAND_RETURN_OK; } static enum command_return handle_play(struct client *client, int argc, char *argv[]) { int song = -1; enum playlist_result result; if (argc == 2 && !check_int(client, &song, argv[1], need_positive)) return COMMAND_RETURN_ERROR; result = playPlaylist(song, 0); return print_playlist_result(client, result); } static enum command_return handle_playid(struct client *client, int argc, char *argv[]) { int id = -1; enum playlist_result result; if (argc == 2 && !check_int(client, &id, argv[1], need_positive)) return COMMAND_RETURN_ERROR; result = playPlaylistById(id, 0); return print_playlist_result(client, result); } static enum command_return handle_stop(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { stopPlaylist(); return COMMAND_RETURN_OK; } static enum command_return handle_currentsong(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { int song = getPlaylistCurrentSong(); enum playlist_result result; if (song < 0) return COMMAND_RETURN_OK; result = playlistInfo(client, song, song + 1); return print_playlist_result(client, result); } static enum command_return handle_pause(struct client *client, int argc, char *argv[]) { if (argc == 2) { bool pause_flag; if (!check_bool(client, &pause_flag, argv[1])) return COMMAND_RETURN_ERROR; playerSetPause(pause_flag); return COMMAND_RETURN_OK; } playerPause(); return COMMAND_RETURN_OK; } static enum command_return handle_status(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { const char *state = NULL; int updateJobId; int song; switch (getPlayerState()) { case PLAYER_STATE_STOP: state = "stop"; break; case PLAYER_STATE_PAUSE: state = "pause"; break; case PLAYER_STATE_PLAY: state = "play"; break; } client_printf(client, COMMAND_STATUS_VOLUME ": %i\n" COMMAND_STATUS_REPEAT ": %i\n" COMMAND_STATUS_RANDOM ": %i\n" COMMAND_STATUS_PLAYLIST ": %li\n" COMMAND_STATUS_PLAYLIST_LENGTH ": %i\n" COMMAND_STATUS_CROSSFADE ": %i\n" COMMAND_STATUS_STATE ": %s\n", volume_level_get(), getPlaylistRepeatStatus(), getPlaylistRandomStatus(), getPlaylistVersion(), getPlaylistLength(), (int)(getPlayerCrossFade() + 0.5), state); song = getPlaylistCurrentSong(); if (song >= 0) { client_printf(client, COMMAND_STATUS_SONG ": %i\n" COMMAND_STATUS_SONGID ": %u\n", song, getPlaylistSongId(song)); } if (getPlayerState() != PLAYER_STATE_STOP) { const struct audio_format *af = player_get_audio_format(); client_printf(client, COMMAND_STATUS_TIME ": %i:%i\n" COMMAND_STATUS_BITRATE ": %li\n" COMMAND_STATUS_AUDIO ": %u:%u:%u\n", getPlayerElapsedTime(), getPlayerTotalTime(), getPlayerBitRate(), af->sample_rate, af->bits, af->channels); } if ((updateJobId = isUpdatingDB())) { client_printf(client, COMMAND_STATUS_UPDATING_DB ": %i\n", updateJobId); } if (getPlayerError() != PLAYER_ERROR_NOERROR) { client_printf(client, COMMAND_STATUS_ERROR ": %s\n", getPlayerErrorStr()); } return COMMAND_RETURN_OK; } static enum command_return handle_kill(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { return COMMAND_RETURN_KILL; } static enum command_return handle_close(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { return COMMAND_RETURN_CLOSE; } static enum command_return handle_add(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { char *uri = argv[1]; enum playlist_result result; if (strncmp(uri, "file:///", 8) == 0) { #ifdef WIN32 result = PLAYLIST_RESULT_DENIED; #else result = playlist_append_file(uri + 7, client_get_uid(client), NULL); #endif return print_playlist_result(client, result); } if (uri_has_scheme(uri)) { if (!uri_supported_scheme(uri)) { command_error(client, ACK_ERROR_NO_EXIST, "unsupported URI scheme"); return COMMAND_RETURN_ERROR; } return addToPlaylist(uri, NULL); } result = addAllIn(uri); if (result == (enum playlist_result)-1) { command_error(client, ACK_ERROR_NO_EXIST, "directory or file not found"); return COMMAND_RETURN_ERROR; } return print_playlist_result(client, result); } static enum command_return handle_addid(struct client *client, int argc, char *argv[]) { char *uri = argv[1]; unsigned added_id; enum playlist_result result; if (strncmp(uri, "file:///", 8) == 0) { #ifdef WIN32 result = PLAYLIST_RESULT_DENIED; #else result = playlist_append_file(uri + 7, client_get_uid(client), &added_id); #endif } else { if (uri_has_scheme(uri) && !uri_supported_scheme(uri)) { command_error(client, ACK_ERROR_NO_EXIST, "unsupported URI scheme"); return COMMAND_RETURN_ERROR; } result = addToPlaylist(uri, &added_id); } if (result != PLAYLIST_RESULT_SUCCESS) return print_playlist_result(client, result); if (argc == 3) { int to; if (!check_int(client, &to, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; result = moveSongInPlaylistById(added_id, to); if (result != PLAYLIST_RESULT_SUCCESS) { enum command_return ret = print_playlist_result(client, result); deleteFromPlaylistById(added_id); return ret; } } client_printf(client, "Id: %u\n", added_id); return result; } static enum command_return handle_delete(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int song; enum playlist_result result; if (!check_int(client, &song, argv[1], need_positive)) return COMMAND_RETURN_ERROR; result = deleteFromPlaylist(song); return print_playlist_result(client, result); } static enum command_return handle_deleteid(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int id; enum playlist_result result; if (!check_int(client, &id, argv[1], need_positive)) return COMMAND_RETURN_ERROR; result = deleteFromPlaylistById(id); return print_playlist_result(client, result); } static enum command_return handle_playlist(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { showPlaylist(client); return COMMAND_RETURN_OK; } static enum command_return handle_shuffle(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { shufflePlaylist(); return COMMAND_RETURN_OK; } static enum command_return handle_clear(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { clearPlaylist(); return COMMAND_RETURN_OK; } static enum command_return handle_save(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { enum playlist_result result; result = savePlaylist(argv[1]); return print_playlist_result(client, result); } static enum command_return handle_load(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { enum playlist_result result; result = loadPlaylist(argv[1]); return print_playlist_result(client, result); } static enum command_return handle_listplaylist(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int ret; ret = PlaylistInfo(client, argv[1], 0); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "No such playlist"); return ret; } static enum command_return handle_listplaylistinfo(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int ret; ret = PlaylistInfo(client, argv[1], 1); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "No such playlist"); return ret; } static enum command_return handle_lsinfo(struct client *client, int argc, char *argv[]) { const char *uri; const struct directory *directory; if (argc == 2) uri = argv[1]; else /* default is root directory */ uri = ""; directory = db_get_directory(uri); if (directory == NULL) { command_error(client, ACK_ERROR_NO_EXIST, "directory not found"); return COMMAND_RETURN_ERROR; } directory_print(client, directory); if (isRootDirectory(uri)) { GPtrArray *list = spl_list(); if (list != NULL) { print_spl_list(client, list); spl_list_free(list); } } return COMMAND_RETURN_OK; } static enum command_return handle_rm(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { enum playlist_result result; result = spl_delete(argv[1]); return print_playlist_result(client, result); } static enum command_return handle_rename(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { enum playlist_result result; result = spl_rename(argv[1], argv[2]); return print_playlist_result(client, result); } static enum command_return handle_plchanges(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { uint32_t version; if (!check_uint32(client, &version, argv[1], need_positive)) return COMMAND_RETURN_ERROR; return playlistChanges(client, version); } static enum command_return handle_plchangesposid(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { uint32_t version; if (!check_uint32(client, &version, argv[1], need_positive)) return COMMAND_RETURN_ERROR; return playlistChangesPosId(client, version); } static enum command_return handle_playlistinfo(struct client *client, int argc, char *argv[]) { unsigned start = 0, end = UINT_MAX; enum playlist_result result; if (argc == 2 && !check_range(client, &start, &end, argv[1], need_range)) return COMMAND_RETURN_ERROR; result = playlistInfo(client, start, end); return print_playlist_result(client, result); } static enum command_return handle_playlistid(struct client *client, int argc, char *argv[]) { int id = -1; enum playlist_result result; if (argc == 2 && !check_int(client, &id, argv[1], need_positive)) return COMMAND_RETURN_ERROR; result = playlistId(client, id); return print_playlist_result(client, result); } static enum command_return handle_find(struct client *client, int argc, char *argv[]) { int ret; LocateTagItem *items; int numItems = newLocateTagItemArrayFromArgArray(argv + 1, argc - 1, &items); if (numItems <= 0) { command_error(client, ACK_ERROR_ARG, "incorrect arguments"); return COMMAND_RETURN_ERROR; } ret = findSongsIn(client, NULL, numItems, items); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "directory or file not found"); freeLocateTagItemArray(numItems, items); return ret; } static enum command_return handle_search(struct client *client, int argc, char *argv[]) { int ret; LocateTagItem *items; int numItems = newLocateTagItemArrayFromArgArray(argv + 1, argc - 1, &items); if (numItems <= 0) { command_error(client, ACK_ERROR_ARG, "incorrect arguments"); return COMMAND_RETURN_ERROR; } ret = searchForSongsIn(client, NULL, numItems, items); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "directory or file not found"); freeLocateTagItemArray(numItems, items); return ret; } static enum command_return handle_count(struct client *client, int argc, char *argv[]) { int ret; LocateTagItem *items; int numItems = newLocateTagItemArrayFromArgArray(argv + 1, argc - 1, &items); if (numItems <= 0) { command_error(client, ACK_ERROR_ARG, "incorrect arguments"); return COMMAND_RETURN_ERROR; } ret = searchStatsForSongsIn(client, NULL, numItems, items); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "directory or file not found"); freeLocateTagItemArray(numItems, items); return ret; } static enum command_return handle_playlistfind(struct client *client, int argc, char *argv[]) { LocateTagItem *items; int numItems = newLocateTagItemArrayFromArgArray(argv + 1, argc - 1, &items); if (numItems <= 0) { command_error(client, ACK_ERROR_ARG, "incorrect arguments"); return COMMAND_RETURN_ERROR; } findSongsInPlaylist(client, numItems, items); freeLocateTagItemArray(numItems, items); return COMMAND_RETURN_OK; } static enum command_return handle_playlistsearch(struct client *client, int argc, char *argv[]) { LocateTagItem *items; int numItems = newLocateTagItemArrayFromArgArray(argv + 1, argc - 1, &items); if (numItems <= 0) { command_error(client, ACK_ERROR_ARG, "incorrect arguments"); return COMMAND_RETURN_ERROR; } searchForSongsInPlaylist(client, numItems, items); freeLocateTagItemArray(numItems, items); return COMMAND_RETURN_OK; } static enum command_return handle_playlistdelete(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { char *playlist = argv[1]; int from; enum playlist_result result; if (!check_int(client, &from, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; result = spl_remove_index(playlist, from); return print_playlist_result(client, result); } static enum command_return handle_playlistmove(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { char *playlist = argv[1]; int from, to; enum playlist_result result; if (!check_int(client, &from, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; if (!check_int(client, &to, argv[3], check_integer, argv[3])) return COMMAND_RETURN_ERROR; result = spl_move_index(playlist, from, to); return print_playlist_result(client, result); } static enum command_return handle_update(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { char *path = NULL; unsigned ret; assert(argc <= 2); if (argc == 2) path = g_strdup(argv[1]); ret = directory_update_init(path); if (ret > 0) { client_printf(client, "updating_db: %i\n", ret); return COMMAND_RETURN_OK; } else { command_error(client, ACK_ERROR_UPDATE_ALREADY, "already updating"); return COMMAND_RETURN_ERROR; } } static enum command_return handle_next(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { nextSongInPlaylist(); return COMMAND_RETURN_OK; } static enum command_return handle_previous(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { previousSongInPlaylist(); return COMMAND_RETURN_OK; } static enum command_return handle_listall(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { char *directory = NULL; int ret; if (argc == 2) directory = argv[1]; ret = printAllIn(client, directory); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "directory or file not found"); return ret; } static enum command_return handle_volume(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int change, ret; if (!check_int(client, &change, argv[1], need_integer)) return COMMAND_RETURN_ERROR; ret = volume_level_change(change, 1); if (ret == -1) command_error(client, ACK_ERROR_SYSTEM, "problems setting volume"); return ret; } static enum command_return handle_setvol(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int level, ret; if (!check_int(client, &level, argv[1], need_integer)) return COMMAND_RETURN_ERROR; ret = volume_level_change(level, 0); if (ret == -1) command_error(client, ACK_ERROR_SYSTEM, "problems setting volume"); return ret; } static enum command_return handle_repeat(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int status; if (!check_int(client, &status, argv[1], need_integer)) return COMMAND_RETURN_ERROR; if (status != 0 && status != 1) { command_error(client, ACK_ERROR_ARG, "\"%i\" is not 0 or 1", status); return COMMAND_RETURN_ERROR; } setPlaylistRepeatStatus(status); return COMMAND_RETURN_OK; } static enum command_return handle_random(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int status; if (!check_int(client, &status, argv[1], need_integer)) return COMMAND_RETURN_ERROR; if (status != 0 && status != 1) { command_error(client, ACK_ERROR_ARG, "\"%i\" is not 0 or 1", status); return COMMAND_RETURN_ERROR; } setPlaylistRandomStatus(status); return COMMAND_RETURN_OK; } static enum command_return handle_stats(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { return stats_print(client); } static enum command_return handle_clearerror(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { clearPlayerError(); return COMMAND_RETURN_OK; } static enum command_return handle_list(struct client *client, int argc, char *argv[]) { int numConditionals; LocateTagItem *conditionals = NULL; int tagType = getLocateTagItemType(argv[1]); int ret; if (tagType < 0) { command_error(client, ACK_ERROR_ARG, "\"%s\" is not known", argv[1]); return COMMAND_RETURN_ERROR; } if (tagType == LOCATE_TAG_ANY_TYPE) { command_error(client, ACK_ERROR_ARG, "\"any\" is not a valid return tag type"); return COMMAND_RETURN_ERROR; } /* for compatibility with < 0.12.0 */ if (argc == 3) { if (tagType != TAG_ITEM_ALBUM) { command_error(client, ACK_ERROR_ARG, "should be \"%s\" for 3 arguments", mpdTagItemKeys[TAG_ITEM_ALBUM]); return COMMAND_RETURN_ERROR; } conditionals = newLocateTagItem(mpdTagItemKeys[TAG_ITEM_ARTIST], argv[2]); numConditionals = 1; } else { numConditionals = newLocateTagItemArrayFromArgArray(argv + 2, argc - 2, &conditionals); if (numConditionals < 0) { command_error(client, ACK_ERROR_ARG, "not able to parse args"); return COMMAND_RETURN_ERROR; } } ret = listAllUniqueTags(client, tagType, numConditionals, conditionals); if (conditionals) freeLocateTagItemArray(numConditionals, conditionals); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "directory or file not found"); return ret; } static enum command_return handle_move(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int from, to; enum playlist_result result; if (!check_int(client, &from, argv[1], check_integer, argv[1])) return COMMAND_RETURN_ERROR; if (!check_int(client, &to, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; result = moveSongInPlaylist(from, to); return print_playlist_result(client, result); } static enum command_return handle_moveid(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int id, to; enum playlist_result result; if (!check_int(client, &id, argv[1], check_integer, argv[1])) return COMMAND_RETURN_ERROR; if (!check_int(client, &to, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; result = moveSongInPlaylistById(id, to); return print_playlist_result(client, result); } static enum command_return handle_swap(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int song1, song2; enum playlist_result result; if (!check_int(client, &song1, argv[1], check_integer, argv[1])) return COMMAND_RETURN_ERROR; if (!check_int(client, &song2, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; result = swapSongsInPlaylist(song1, song2); return print_playlist_result(client, result); } static enum command_return handle_swapid(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int id1, id2; enum playlist_result result; if (!check_int(client, &id1, argv[1], check_integer, argv[1])) return COMMAND_RETURN_ERROR; if (!check_int(client, &id2, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; result = swapSongsInPlaylistById(id1, id2); return print_playlist_result(client, result); } static enum command_return handle_seek(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int song, seek_time; enum playlist_result result; if (!check_int(client, &song, argv[1], check_integer, argv[1])) return COMMAND_RETURN_ERROR; if (!check_int(client, &seek_time, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; result = seekSongInPlaylist(song, seek_time); return print_playlist_result(client, result); } static enum command_return handle_seekid(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { int id, seek_time; enum playlist_result result; if (!check_int(client, &id, argv[1], check_integer, argv[1])) return COMMAND_RETURN_ERROR; if (!check_int(client, &seek_time, argv[2], check_integer, argv[2])) return COMMAND_RETURN_ERROR; result = seekSongInPlaylistById(id, seek_time); return print_playlist_result(client, result); } static enum command_return handle_listallinfo(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { char *directory = NULL; int ret; if (argc == 2) directory = argv[1]; ret = printInfoForAllIn(client, directory); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "directory or file not found"); return ret; } static enum command_return handle_ping(G_GNUC_UNUSED struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { return COMMAND_RETURN_OK; } static enum command_return handle_password(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { unsigned permission = 0; if (getPermissionFromPassword(argv[1], &permission) < 0) { command_error(client, ACK_ERROR_PASSWORD, "incorrect password"); return COMMAND_RETURN_ERROR; } client_set_permission(client, permission); return COMMAND_RETURN_OK; } static enum command_return handle_crossfade(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { unsigned xfade_time; if (!check_unsigned(client, &xfade_time, argv[1])) return COMMAND_RETURN_ERROR; setPlayerCrossFade(xfade_time); return COMMAND_RETURN_OK; } static enum command_return handle_enableoutput(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { unsigned device; int ret; if (!check_unsigned(client, &device, argv[1])) return COMMAND_RETURN_ERROR; ret = enableAudioDevice(device); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "No such audio output"); return ret; } static enum command_return handle_disableoutput(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { unsigned device; int ret; if (!check_unsigned(client, &device, argv[1])) return COMMAND_RETURN_ERROR; ret = disableAudioDevice(device); if (ret == -1) command_error(client, ACK_ERROR_NO_EXIST, "No such audio output"); return ret; } static enum command_return handle_devices(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { printAudioDevices(client); return COMMAND_RETURN_OK; } /* don't be fooled, this is the command handler for "commands" command */ static enum command_return handle_commands(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]); static enum command_return handle_not_commands(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]); static enum command_return handle_playlistclear(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { enum playlist_result result; result = spl_clear(argv[1]); return print_playlist_result(client, result); } static enum command_return handle_playlistadd(struct client *client, G_GNUC_UNUSED int argc, char *argv[]) { char *playlist = argv[1]; char *uri = argv[2]; enum playlist_result result; if (uri_has_scheme(uri)) { if (!uri_supported_scheme(uri)) { command_error(client, ACK_ERROR_NO_EXIST, "unsupported URI scheme"); return COMMAND_RETURN_ERROR; } result = spl_append_uri(uri, playlist); } else result = addAllInToStoredPlaylist(uri, playlist); if (result == (enum playlist_result)-1) { command_error(client, ACK_ERROR_NO_EXIST, "directory or file not found"); return COMMAND_RETURN_ERROR; } return print_playlist_result(client, result); } static enum command_return handle_listplaylists(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { GPtrArray *list = spl_list(); if (list == NULL) { command_error(client, ACK_ERROR_SYSTEM, "failed to get list of stored playlists"); return COMMAND_RETURN_ERROR; } print_spl_list(client, list); spl_list_free(list); return COMMAND_RETURN_OK; } static enum command_return handle_idle(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { unsigned flags = 0, j; int i; const char *const* idle_names; idle_names = idle_get_names(); for (i = 1; i < argc; ++i) { if (!argv[i]) continue; for (j = 0; idle_names[j]; ++j) { if (!strcasecmp(argv[i], idle_names[j])) { flags |= (1 << j); } } } /* No argument means that the client wants to receive everything */ if (flags == 0) flags = ~0; /* enable "idle" mode on this client */ client_idle_wait(client, flags); /* return value is "1" so the caller won't print "OK" */ return 1; } #ifdef ENABLE_SQLITE static enum command_return handle_sticker_song(struct client *client, int argc, char *argv[]) { struct song *song = db_get_song(argv[3]); if (song == NULL) { command_error(client, ACK_ERROR_NO_EXIST, "no such song"); return COMMAND_RETURN_ERROR; } if (argc == 5 && strcmp(argv[1], "get") == 0) { char *value; value = sticker_song_get_value(song, argv[4]); if (value == NULL) { command_error(client, ACK_ERROR_NO_EXIST, "no such sticker"); return COMMAND_RETURN_ERROR; } client_printf(client, "sticker: %s=%s\n", argv[4], value); g_free(value); return COMMAND_RETURN_OK; } else if (argc == 6 && strcmp(argv[1], "set") == 0) { bool ret; ret = sticker_song_set_value(song, argv[4], argv[5]); if (!ret) { command_error(client, ACK_ERROR_SYSTEM, "failed to set sticker vqalue"); return COMMAND_RETURN_ERROR; } return COMMAND_RETURN_OK; } else { command_error(client, ACK_ERROR_ARG, "bad request"); return COMMAND_RETURN_ERROR; } } static enum command_return handle_sticker(struct client *client, int argc, char *argv[]) { assert(argc >= 4); if (!sticker_enabled()) { command_error(client, ACK_ERROR_UNKNOWN, "sticker database is disabled"); return COMMAND_RETURN_ERROR; } if (strcmp(argv[2], "song") == 0) return handle_sticker_song(client, argc, argv); else { command_error(client, ACK_ERROR_ARG, "unknown sticker domain"); return COMMAND_RETURN_ERROR; } } #endif /** * The command registry. * * This array must be sorted! */ static const struct command commands[] = { { "add", PERMISSION_ADD, 1, 1, handle_add }, { "addid", PERMISSION_ADD, 1, 2, handle_addid }, { "clear", PERMISSION_CONTROL, 0, 0, handle_clear }, { "clearerror", PERMISSION_CONTROL, 0, 0, handle_clearerror }, { "close", PERMISSION_NONE, -1, -1, handle_close }, { "commands", PERMISSION_NONE, 0, 0, handle_commands }, { "count", PERMISSION_READ, 2, -1, handle_count }, { "crossfade", PERMISSION_CONTROL, 1, 1, handle_crossfade }, { "currentsong", PERMISSION_READ, 0, 0, handle_currentsong }, { "delete", PERMISSION_CONTROL, 1, 1, handle_delete }, { "deleteid", PERMISSION_CONTROL, 1, 1, handle_deleteid }, { "disableoutput", PERMISSION_ADMIN, 1, 1, handle_disableoutput }, { "enableoutput", PERMISSION_ADMIN, 1, 1, handle_enableoutput }, { "find", PERMISSION_READ, 2, -1, handle_find }, { "idle", PERMISSION_READ, 0, -1, handle_idle }, { "kill", PERMISSION_ADMIN, -1, -1, handle_kill }, { "list", PERMISSION_READ, 1, -1, handle_list }, { "listall", PERMISSION_READ, 0, 1, handle_listall }, { "listallinfo", PERMISSION_READ, 0, 1, handle_listallinfo }, { "listplaylist", PERMISSION_READ, 1, 1, handle_listplaylist }, { "listplaylistinfo", PERMISSION_READ, 1, 1, handle_listplaylistinfo }, { "listplaylists", PERMISSION_READ, 0, 0, handle_listplaylists }, { "load", PERMISSION_ADD, 1, 1, handle_load }, { "lsinfo", PERMISSION_READ, 0, 1, handle_lsinfo }, { "move", PERMISSION_CONTROL, 2, 2, handle_move }, { "moveid", PERMISSION_CONTROL, 2, 2, handle_moveid }, { "next", PERMISSION_CONTROL, 0, 0, handle_next }, { "notcommands", PERMISSION_NONE, 0, 0, handle_not_commands }, { "outputs", PERMISSION_READ, 0, 0, handle_devices }, { "password", PERMISSION_NONE, 1, 1, handle_password }, { "pause", PERMISSION_CONTROL, 0, 1, handle_pause }, { "ping", PERMISSION_NONE, 0, 0, handle_ping }, { "play", PERMISSION_CONTROL, 0, 1, handle_play }, { "playid", PERMISSION_CONTROL, 0, 1, handle_playid }, { "playlist", PERMISSION_READ, 0, 0, handle_playlist }, { "playlistadd", PERMISSION_CONTROL, 2, 2, handle_playlistadd }, { "playlistclear", PERMISSION_CONTROL, 1, 1, handle_playlistclear }, { "playlistdelete", PERMISSION_CONTROL, 2, 2, handle_playlistdelete }, { "playlistfind", PERMISSION_READ, 2, -1, handle_playlistfind }, { "playlistid", PERMISSION_READ, 0, 1, handle_playlistid }, { "playlistinfo", PERMISSION_READ, 0, 1, handle_playlistinfo }, { "playlistmove", PERMISSION_CONTROL, 3, 3, handle_playlistmove }, { "playlistsearch", PERMISSION_READ, 2, -1, handle_playlistsearch }, { "plchanges", PERMISSION_READ, 1, 1, handle_plchanges }, { "plchangesposid", PERMISSION_READ, 1, 1, handle_plchangesposid }, { "previous", PERMISSION_CONTROL, 0, 0, handle_previous }, { "random", PERMISSION_CONTROL, 1, 1, handle_random }, { "rename", PERMISSION_CONTROL, 2, 2, handle_rename }, { "repeat", PERMISSION_CONTROL, 1, 1, handle_repeat }, { "rm", PERMISSION_CONTROL, 1, 1, handle_rm }, { "save", PERMISSION_CONTROL, 1, 1, handle_save }, { "search", PERMISSION_READ, 2, -1, handle_search }, { "seek", PERMISSION_CONTROL, 2, 2, handle_seek }, { "seekid", PERMISSION_CONTROL, 2, 2, handle_seekid }, { "setvol", PERMISSION_CONTROL, 1, 1, handle_setvol }, { "shuffle", PERMISSION_CONTROL, 0, 0, handle_shuffle }, { "stats", PERMISSION_READ, 0, 0, handle_stats }, { "status", PERMISSION_READ, 0, 0, handle_status }, #ifdef ENABLE_SQLITE { "sticker", PERMISSION_ADMIN, 3, -1, handle_sticker }, #endif { "stop", PERMISSION_CONTROL, 0, 0, handle_stop }, { "swap", PERMISSION_CONTROL, 2, 2, handle_swap }, { "swapid", PERMISSION_CONTROL, 2, 2, handle_swapid }, { "tagtypes", PERMISSION_READ, 0, 0, handle_tagtypes }, { "update", PERMISSION_ADMIN, 0, 1, handle_update }, { "urlhandlers", PERMISSION_READ, 0, 0, handle_urlhandlers }, { "volume", PERMISSION_CONTROL, 1, 1, handle_volume }, }; static const unsigned num_commands = sizeof(commands) / sizeof(commands[0]); /* don't be fooled, this is the command handler for "commands" command */ static enum command_return handle_commands(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { const unsigned permission = client_get_permission(client); const struct command *cmd; for (unsigned i = 0; i < num_commands; ++i) { cmd = &commands[i]; if (cmd->permission == (permission & cmd->permission)) client_printf(client, "command: %s\n", cmd->cmd); } return COMMAND_RETURN_OK; } static enum command_return handle_not_commands(struct client *client, G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) { const unsigned permission = client_get_permission(client); const struct command *cmd; for (unsigned i = 0; i < num_commands; ++i) { cmd = &commands[i]; if (cmd->permission != (permission & cmd->permission)) client_printf(client, "command: %s\n", cmd->cmd); } return COMMAND_RETURN_OK; } void command_init(void) { #ifndef NDEBUG /* ensure that the command list is sorted */ for (unsigned i = 0; i < num_commands - 1; ++i) assert(strcmp(commands[i].cmd, commands[i + 1].cmd) < 0); #endif } void command_finish(void) { } static const struct command * command_lookup(const char *name) { unsigned a = 0, b = num_commands, i; int cmp; /* binary search */ do { i = (a + b) / 2; cmp = strcmp(name, commands[i].cmd); if (cmp == 0) return &commands[i]; else if (cmp < 0) b = i; else if (cmp > 0) a = i + 1; } while (a < b); return NULL; } static bool command_check_request(const struct command *cmd, struct client *client, unsigned permission, int argc, char *argv[]) { int min = cmd->min + 1; int max = cmd->max + 1; if (cmd->permission != (permission & cmd->permission)) { if (client != NULL) command_error(client, ACK_ERROR_PERMISSION, "you don't have permission for \"%s\"", cmd->cmd); return false; } if (min == 0) return true; if (min == max && max != argc) { if (client != NULL) command_error(client, ACK_ERROR_ARG, "wrong number of arguments for \"%s\"", argv[0]); return false; } else if (argc < min) { if (client != NULL) command_error(client, ACK_ERROR_ARG, "too few arguments for \"%s\"", argv[0]); return false; } else if (argc > max && max /* != 0 */ ) { if (client != NULL) command_error(client, ACK_ERROR_ARG, "too many arguments for \"%s\"", argv[0]); return false; } else return true; } static const struct command * command_checked_lookup(struct client *client, unsigned permission, int argc, char *argv[]) { static char unknown[] = ""; const struct command *cmd; current_command = unknown; if (argc == 0) return NULL; cmd = command_lookup(argv[0]); if (cmd == NULL) { if (client != NULL) command_error(client, ACK_ERROR_UNKNOWN, "unknown command \"%s\"", argv[0]); return NULL; } current_command = cmd->cmd; if (!command_check_request(cmd, client, permission, argc, argv)) return NULL; return cmd; } enum command_return command_process(struct client *client, char *commandString) { int argc; char *argv[COMMAND_ARGV_MAX] = { NULL }; const struct command *cmd; enum command_return ret = COMMAND_RETURN_ERROR; if (!(argc = buffer2array(commandString, argv, COMMAND_ARGV_MAX))) return COMMAND_RETURN_OK; cmd = command_checked_lookup(client, client_get_permission(client), argc, argv); if (cmd) ret = cmd->handler(client, argc, argv); current_command = NULL; return ret; } enum command_return command_process_list(struct client *client, bool list_ok, GSList *list) { enum command_return ret = COMMAND_RETURN_OK; command_list_num = 0; for (GSList *cur = list; cur != NULL; cur = g_slist_next(cur)) { char *cmd = cur->data; DEBUG("command_process_list: process command \"%s\"\n", cmd); ret = command_process(client, cmd); DEBUG("command_process_list: command returned %i\n", ret); if (ret != COMMAND_RETURN_OK || client_is_expired(client)) break; else if (list_ok) client_puts(client, "list_OK\n"); command_list_num++; } command_list_num = 0; return ret; }