/* the Music Player Daemon (MPD) * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu) * 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.h" #include "playlist.h" #include "ls.h" #include "directory.h" #include "tables.h" #include "volume.h" #include "path.h" #include "stats.h" #include "myfprintf.h" #include "list.h" #include "conf.h" #include "permission.h" #include "audio.h" #include "buffer2array.h" #include "log.h" #include <stdlib.h> #include <string.h> #include <unistd.h> #define COMMAND_PLAY "play" #define COMMAND_STOP "stop" #define COMMAND_PAUSE "pause" #define COMMAND_STATUS "status" #define COMMAND_KILL "kill" #define COMMAND_CLOSE "close" #define COMMAND_ADD "add" #define COMMAND_DELETE "delete" #define COMMAND_PLAYLIST "playlist" #define COMMAND_SHUFFLE "shuffle" #define COMMAND_CLEAR "clear" #define COMMAND_SAVE "save" #define COMMAND_LOAD "load" #define COMMAND_LSINFO "lsinfo" #define COMMAND_RM "rm" #define COMMAND_PLAYLISTINFO "playlistinfo" #define COMMAND_FIND "find" #define COMMAND_SEARCH "search" #define COMMAND_UPDATE "update" #define COMMAND_NEXT "next" #define COMMAND_PREVIOUS "previous" #define COMMAND_LISTALL "listall" #define COMMAND_VOLUME "volume" #define COMMAND_REPEAT "repeat" #define COMMAND_RANDOM "random" #define COMMAND_STATS "stats" #define COMMAND_CLEAR_ERROR "clearerror" #define COMMAND_LIST "list" #define COMMAND_MOVE "move" #define COMMAND_SWAP "swap" #define COMMAND_SEEK "seek" #define COMMAND_LISTALLINFO "listallinfo" #define COMMAND_PING "ping" #define COMMAND_SETVOL "setvol" #define COMMAND_PASSWORD "password" #define COMMAND_CROSSFADE "crossfade" #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_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" typedef struct _CommandEntry CommandEntry; typedef int (* CommandHandlerFunction)(FILE *, unsigned int *, int, char **); typedef int (* CommandListHandlerFunction)(FILE *, unsigned int *, int, char **, ListNode *, CommandEntry *); /* if min: -1 don't check args * * if max: -1 no max args */ struct _CommandEntry { char * cmd; int min; int max; unsigned int reqPermission; CommandHandlerFunction handler; CommandListHandlerFunction listHandler; }; CommandEntry * getCommandEntryFromString(char * string, int * permission); List * commandList; CommandEntry * newCommandEntry() { CommandEntry * cmd = malloc(sizeof(CommandEntry)); cmd->cmd = NULL; cmd->min = 0; cmd->max = 0; cmd->handler = NULL; cmd->listHandler = NULL; cmd->reqPermission = 0; return cmd; } void addCommand(char * name, unsigned int reqPermission, int minargs, int maxargs, CommandHandlerFunction handler_func, CommandListHandlerFunction listHandler_func) { CommandEntry * cmd = newCommandEntry(); cmd->cmd = name; cmd->min = minargs; cmd->max = maxargs; cmd->handler = handler_func; cmd->listHandler = listHandler_func; cmd->reqPermission = reqPermission; insertInList(commandList, cmd->cmd, cmd); } int handlePlay(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int song = -1; char * test; if(argArrayLength==2) { song = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s need a positive integer\n",COMMAND_RESPOND_ERROR); return -1; } } return playPlaylist(fp,song,1); } int handleStop(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return stopPlaylist(fp); } int handlePause(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { if(argArrayLength==2) { char * test; int pause = strtol(argArray[1],&test,10); if(*test!='\0' || (pause!=0 && pause!=1)) { myfprintf(fp,"%s \%s\" is not 0 or 1\n", COMMAND_RESPOND_ERROR,pause); return -1; } return playerSetPause(fp,pause); } return playerPause(fp); } int commandStatus(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { char * state = NULL; int updateJobId; playPlaylistIfPlayerStopped(); switch(getPlayerState()) { case PLAYER_STATE_STOP: state = strdup(COMMAND_STOP); break; case PLAYER_STATE_PAUSE: state = strdup(COMMAND_PAUSE); break; case PLAYER_STATE_PLAY: state = strdup(COMMAND_PLAY); break; } myfprintf(fp,"%s: %i\n",COMMAND_STATUS_VOLUME,getVolumeLevel()); myfprintf(fp,"%s: %i\n",COMMAND_STATUS_REPEAT,getPlaylistRepeatStatus()); myfprintf(fp,"%s: %i\n",COMMAND_STATUS_RANDOM,getPlaylistRandomStatus()); myfprintf(fp,"%s: %li\n",COMMAND_STATUS_PLAYLIST,getPlaylistVersion()); myfprintf(fp,"%s: %i\n",COMMAND_STATUS_PLAYLIST_LENGTH,getPlaylistLength()); myfprintf(fp,"%s: %i\n",COMMAND_STATUS_CROSSFADE, (int)(getPlayerCrossFade()+0.5)); myfprintf(fp,"%s: %s\n",COMMAND_STATUS_STATE,state); if(getPlayerState()!=PLAYER_STATE_STOP) { myfprintf(fp,"%s: %i\n",COMMAND_STATUS_SONG,getPlaylistCurrentSong()); myfprintf(fp,"%s: %i:%i\n",COMMAND_STATUS_TIME,getPlayerElapsedTime(),getPlayerTotalTime()); myfprintf(fp,"%s: %li\n",COMMAND_STATUS_BITRATE,getPlayerBitRate(),getPlayerTotalTime()); myfprintf(fp,"%s: %u:%i:%i\n",COMMAND_STATUS_AUDIO,getPlayerSampleRate(),getPlayerBits(),getPlayerChannels()); } if((updateJobId = isUpdatingDB())) { myfprintf(fp,"%s: %i\n",COMMAND_STATUS_UPDATING_DB,updateJobId); } if(getPlayerError()!=PLAYER_ERROR_NOERROR) { myfprintf(fp,"%s: %s\n",COMMAND_STATUS_ERROR,getPlayerErrorStr()); } free(state); return 0; } int handleKill(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return COMMAND_RETURN_KILL; } int handleClose(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return COMMAND_RETURN_CLOSE; } int handleAdd(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { char * directory = NULL; if(argArrayLength == 2) directory = argArray[1]; return addAllIn(fp,directory); } int handleDelete(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int song; char * test; song = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s need a positive integer\n",COMMAND_RESPOND_ERROR); return -1; } return deleteFromPlaylist(fp,song); } int handlePlaylist(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return showPlaylist(fp); } int handleShuffle(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return shufflePlaylist(fp); } int handleClear(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return clearPlaylist(fp); } int handleSave(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return savePlaylist(fp,argArray[1]); } int handleLoad(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return loadPlaylist(fp,argArray[1]); } int handleLsInfo(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { if(argArrayLength==1) { if(printDirectoryInfo(fp,NULL)<0) return -1; else return lsPlaylists(fp,""); } else { if(printDirectoryInfo(fp,argArray[1])<0) return -1; else return lsPlaylists(fp,argArray[1]); } } int handleRm(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return deletePlaylist(fp,argArray[1]); } int handlePlaylistInfo(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int song = -1; char * test; if(argArrayLength == 2) { song = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s need a positive integer\n",COMMAND_RESPOND_ERROR); return -1; } } return playlistInfo(fp,song); } int handleFind(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return findSongsIn(fp,NULL,argArray[1],argArray[2]); } int handleSearch(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return searchForSongsIn(fp,NULL,argArray[1],argArray[2]); } int listHandleUpdate(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray, ListNode * commandNode, CommandEntry * cmd) { static List * pathList = NULL; CommandEntry * nextCmd = NULL; ListNode * nextNode = commandNode->nextNode;; if(!pathList) pathList = makeList(NULL); if(argArrayLength==2) insertInList(pathList,argArray[1],NULL); else insertInList(pathList,"",NULL); if(nextNode) { nextCmd = getCommandEntryFromString((void *)nextNode->data, permission); } if(cmd!=nextCmd) { int ret = updateInit(fp,pathList); freeList(pathList); pathList = NULL; return ret; } return 0; } int handleUpdate(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { if(argArrayLength==2) { int ret; List * pathList = makeList(NULL); insertInList(pathList,argArray[1],NULL); ret = updateInit(fp,pathList); freeList(pathList); return ret; } return updateInit(fp,NULL); } int handleNext(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return nextSongInPlaylist(fp); } int handlePrevious(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return previousSongInPlaylist(fp); } int handleListAll(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { char * directory = NULL; if(argArrayLength==2) directory = argArray[1]; return printAllIn(fp,directory); } int handleVolume(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int change; char * test; change = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s need an integer\n",COMMAND_RESPOND_ERROR); return -1; } return changeVolumeLevel(fp,change,1); } int handleSetVol(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int level; char * test; level = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s need an integer\n",COMMAND_RESPOND_ERROR); return -1; } return changeVolumeLevel(fp,level,0); } int handleRepeat(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int status; char * test; status = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s need an integer\n",COMMAND_RESPOND_ERROR); return -1; } return setPlaylistRepeatStatus(fp,status); } int handleRandom(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int status; char * test; status = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s need an integer\n",COMMAND_RESPOND_ERROR); return -1; } return setPlaylistRandomStatus(fp,status); } int handleStats(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return printStats(fp); } int handleClearError(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { clearPlayerError(); return 0; } int handleList(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { char * arg1 = NULL; if(argArrayLength==3) arg1 = argArray[2]; return printAllKeysOfTable(fp,argArray[1],arg1); } int handleMove(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int from; int to; char * test; from = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s \"%s\" is not a integer\n", COMMAND_RESPOND_ERROR,argArray[1]); return -1; } to = strtol(argArray[2],&test,10); if(*test!='\0') { myfprintf(fp,"%s \"%s\" is not a integer\n", COMMAND_RESPOND_ERROR,argArray[2]); return -1; } return moveSongInPlaylist(fp,from,to); } int handleSwap(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int song1; int song2; char * test; song1 = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s \"%s\" is not a integer\n", COMMAND_RESPOND_ERROR,argArray[1]); return -1; } song2 = strtol(argArray[2],&test,10); if(*test!='\0') { myfprintf(fp,"%s \"%s\" is not a integer\n", COMMAND_RESPOND_ERROR,argArray[2]); return -1; } return swapSongsInPlaylist(fp,song1,song2); } int handleSeek(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int song; int time; char * test; song = strtol(argArray[1],&test,10); if(*test!='\0') { myfprintf(fp,"%s \"%s\" is not a integer\n", COMMAND_RESPOND_ERROR,argArray[1]); return -1; } time = strtol(argArray[2],&test,10); if(*test!='\0') { myfprintf(fp,"%s \"%s\" is not a integer\n", COMMAND_RESPOND_ERROR,argArray[2]); return -1; } return seekSongInPlaylist(fp,song,time); } int handleListAllInfo(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { char * directory = NULL; if(argArrayLength==2) directory = argArray[1]; return printInfoForAllIn(fp,directory); } int handlePing(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { return 0; } int handlePassword(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { if(getPermissionFromPassword(argArray[1],permission)<0) { myfprintf(fp,"%s incorrect password\n",COMMAND_RESPOND_ERROR); return -1; } return 0; } int handleCrossfade(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { int time; char * test; time = strtol(argArray[1],&test,10); if(*test!='\0' || time<0) { myfprintf(fp,"%s \"%s\" is not a integer >= 0\n", COMMAND_RESPOND_ERROR,argArray[1]); return -1; } setPlayerCrossFade(time); return 0; } void initCommands() { commandList = makeList(free); addCommand(COMMAND_PLAY ,PERMISSION_CONTROL, 0, 1,handlePlay,NULL); addCommand(COMMAND_STOP ,PERMISSION_CONTROL, 0, 0,handleStop,NULL); addCommand(COMMAND_PAUSE ,PERMISSION_CONTROL, 0, 1,handlePause,NULL); addCommand(COMMAND_STATUS ,PERMISSION_READ, 0, 0,commandStatus,NULL); addCommand(COMMAND_KILL ,PERMISSION_ADMIN, -1,-1,handleKill,NULL); addCommand(COMMAND_CLOSE ,0, -1,-1,handleClose,NULL); addCommand(COMMAND_ADD ,PERMISSION_ADD, 0, 1,handleAdd,NULL); addCommand(COMMAND_DELETE ,PERMISSION_CONTROL, 1, 1,handleDelete,NULL); addCommand(COMMAND_PLAYLIST ,PERMISSION_READ, 0, 0,handlePlaylist,NULL); addCommand(COMMAND_SHUFFLE ,PERMISSION_CONTROL, 0, 0,handleShuffle,NULL); addCommand(COMMAND_CLEAR ,PERMISSION_CONTROL, 0, 0,handleClear,NULL); addCommand(COMMAND_SAVE ,PERMISSION_CONTROL, 1, 1,handleSave,NULL); addCommand(COMMAND_LOAD ,PERMISSION_ADD, 1, 1,handleLoad,NULL); addCommand(COMMAND_LSINFO ,PERMISSION_READ, 0, 1,handleLsInfo,NULL); addCommand(COMMAND_RM ,PERMISSION_CONTROL, 1, 1,handleRm,NULL); addCommand(COMMAND_PLAYLISTINFO,PERMISSION_READ, 0, 1,handlePlaylistInfo,NULL); addCommand(COMMAND_FIND ,PERMISSION_READ, 2, 2,handleFind,NULL); addCommand(COMMAND_SEARCH ,PERMISSION_READ, 2, 2,handleSearch,NULL); addCommand(COMMAND_UPDATE ,PERMISSION_ADMIN, 0, 1,handleUpdate,listHandleUpdate); addCommand(COMMAND_NEXT ,PERMISSION_CONTROL, 0, 0,handleNext,NULL); addCommand(COMMAND_PREVIOUS ,PERMISSION_CONTROL, 0, 0,handlePrevious,NULL); addCommand(COMMAND_LISTALL ,PERMISSION_READ, 0, 1,handleListAll,NULL); addCommand(COMMAND_VOLUME ,PERMISSION_CONTROL, 1, 1,handleVolume,NULL); addCommand(COMMAND_REPEAT ,PERMISSION_CONTROL, 1, 1,handleRepeat,NULL); addCommand(COMMAND_RANDOM ,PERMISSION_CONTROL, 1, 1,handleRandom,NULL); addCommand(COMMAND_STATS ,PERMISSION_READ, 0, 0,handleStats,NULL); addCommand(COMMAND_CLEAR_ERROR ,PERMISSION_CONTROL, 0, 0,handleClearError,NULL); addCommand(COMMAND_LIST ,PERMISSION_READ, 1, 2,handleList,NULL); addCommand(COMMAND_MOVE ,PERMISSION_CONTROL, 2, 2,handleMove,NULL); addCommand(COMMAND_SWAP ,PERMISSION_CONTROL, 2, 2,handleSwap,NULL); addCommand(COMMAND_SEEK ,PERMISSION_CONTROL, 2, 2,handleSeek,NULL); addCommand(COMMAND_LISTALLINFO ,PERMISSION_READ, 0, 1,handleListAllInfo,NULL); addCommand(COMMAND_PING ,0, 0, 0,handlePing,NULL); addCommand(COMMAND_SETVOL ,PERMISSION_CONTROL, 1, 1,handleSetVol,NULL); addCommand(COMMAND_PASSWORD ,0, 1, 1,handlePassword,NULL); addCommand(COMMAND_CROSSFADE ,PERMISSION_CONTROL, 1, 1,handleCrossfade,NULL); sortList(commandList); } void finishCommands() { freeList(commandList); } int checkArgcAndPermission(CommandEntry * cmd, FILE *fp, unsigned int permission, int argc, char** argArray) { int min = cmd->min + 1; int max = cmd->max + 1; if (cmd->reqPermission != (permission & cmd->reqPermission)) { if(fp) { myfprintf(fp,"%s You don't have permission for " "\"%s\"\n",COMMAND_RESPOND_ERROR, cmd->cmd); } return -1; } if (min == 0) return 0; if (min == max && max != argc) { if(fp) { myfprintf(fp,"%s Wrong number of arguments for " "\"%s\"\n",COMMAND_RESPOND_ERROR, argArray[0]); } return -1; } else if (argc < min) { if(fp) { myfprintf(fp,"%s too few arguments for \"%s\"\n", COMMAND_RESPOND_ERROR,argArray[0]); } return -1; } else if (argc > max && max /* != 0 */) { if(fp) { myfprintf(fp,"%s too many arguments for \"%s\"\n", COMMAND_RESPOND_ERROR,argArray[0]); } return -1; } else return 0; } CommandEntry * getCommandEntryAndCheckArgcAndPermission(FILE * fp, unsigned int * permission, int argArrayLength, char ** argArray) { CommandEntry * cmd; if(argArrayLength == 0) return NULL; if(!findInList(commandList, argArray[0],(void *)&cmd)) { if(fp) { myfprintf(fp,"%s Unknown command \"%s\"\n", COMMAND_RESPOND_ERROR,argArray[0]); } return NULL; } if(checkArgcAndPermission(cmd, fp, *permission, argArrayLength, argArray) < 0) { return NULL; } return cmd; } CommandEntry * getCommandEntryFromString(char * string, int * permission) { CommandEntry * cmd = NULL; char ** argArray; int argArrayLength = buffer2array(string,&argArray); if(0==argArrayLength) return NULL; cmd = getCommandEntryAndCheckArgcAndPermission(NULL,permission, argArrayLength,argArray); freeArgArray(argArray,argArrayLength); return cmd; } int processCommandInternal(FILE * fp, unsigned int * permission, char * commandString, ListNode * commandNode) { int argArrayLength; char ** argArray; CommandEntry * cmd; int ret = -1; argArrayLength = buffer2array(commandString,&argArray); if(argArrayLength == 0) return 0; if((cmd = getCommandEntryAndCheckArgcAndPermission(fp,permission, argArrayLength,argArray))) { if(NULL==commandNode || NULL==cmd->listHandler) { ret = cmd->handler(fp, permission, argArrayLength, argArray); } else { ret = cmd->listHandler(fp, permission, argArrayLength, argArray, commandNode, cmd); } } freeArgArray(argArray,argArrayLength); return ret; } int proccessListOfCommands(FILE * fp, int * permission, int * expired, List * list) { ListNode * node = list->firstNode; ListNode * tempNode; int ret = 0; while(node!=NULL) { DEBUG("proccesListOfCommands: process command \"%s\"\n", node->data); ret = processCommandInternal(fp,permission,(char *)node->data, node); DEBUG("proccessListOfCommands: command returned %i\n",ret); tempNode = node->nextNode; deleteNodeFromList(list,node); node = tempNode; if(ret!=0 || (*expired)!=0) node = NULL; } return ret; } int processCommand(FILE * fp, unsigned int * permission, char * commandString) { return processCommandInternal(fp,permission,commandString,NULL); } /* vim:set shiftwidth=4 tabstop=8 expandtab: */