/* the Music Player Daemon (MPD) * Copyright (C) 2008 Max Kellermann <max@duempel.org> * 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 */ /* * Maps directory and song objects to file system paths. */ #include "mapper.h" #include "directory.h" #include "song.h" #include "path.h" #include "conf.h" #include <glib.h> #include <assert.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <string.h> #include <errno.h> static char *music_dir; static size_t music_dir_length; static char *playlist_dir; static size_t playlist_dir_length; void mapper_init(void) { ConfigParam *music_dir_param = parseConfigFilePath(CONF_MUSIC_DIR, 1); ConfigParam *playlist_dir_param = parseConfigFilePath(CONF_PLAYLIST_DIR, 1); int ret; struct stat st; music_dir = g_strdup(music_dir_param->value); music_dir_length = strlen(music_dir); ret = stat(music_dir, &st); if (ret < 0) g_warning("failed to stat music directory \"%s\" (config line %i): %s\n", music_dir_param->value, music_dir_param->line, strerror(errno)); else if (!S_ISDIR(st.st_mode)) g_warning("music directory is not a directory: \"%s\" (config line %i)\n", music_dir_param->value, music_dir_param->line); playlist_dir = g_strdup(playlist_dir_param->value); playlist_dir_length = strlen(playlist_dir); ret = stat(playlist_dir, &st); if (ret < 0) g_warning("failed to stat playlist directory \"%s\" (config line %i): %s\n", playlist_dir_param->value, playlist_dir_param->line, strerror(errno)); else if (!S_ISDIR(st.st_mode)) g_warning("playlist directory is not a directory: \"%s\" (config line %i)\n", playlist_dir_param->value, playlist_dir_param->line); } void mapper_finish(void) { g_free(music_dir); g_free(playlist_dir); } static char * rmp2amp_r(char *dst, const char *rel_path) { pfx_dir(dst, rel_path, strlen(rel_path), (const char *)music_dir, music_dir_length); return dst; } const char * map_uri_fs(const char *uri, char *buffer) { assert(uri != NULL); assert(*uri != '/'); assert(buffer != NULL); return rmp2amp_r(buffer, utf8_to_fs_charset(buffer, uri)); } const char * map_directory_fs(const struct directory *directory, char *buffer) { const char *dirname = directory_get_path(directory); if (isRootDirectory(dirname)) return music_dir; return map_uri_fs(dirname, buffer); } const char * map_directory_child_fs(const struct directory *directory, const char *name, char *buffer) { char buffer2[MPD_PATH_MAX]; const char *parent_fs; /* check for invalid or unauthorized base names */ if (*name == 0 || strchr(name, '/') != NULL || strcmp(name, ".") == 0 || strcmp(name, "..") == 0) return NULL; parent_fs = map_directory_fs(directory, buffer2); if (parent_fs == NULL) return NULL; name = utf8_to_fs_charset(buffer, name); pfx_dir(buffer, name, strlen(name), parent_fs, strlen(parent_fs)); return buffer; } const char * map_song_fs(const struct song *song, char *buffer) { assert(song_is_file(song)); if (song_in_database(song)) return map_directory_child_fs(song->parent, song->url, buffer); else return utf8_to_fs_charset(buffer, song->url); } const char * map_fs_to_utf8(const char *path_fs, char *buffer) { if (strncmp(path_fs, music_dir, music_dir_length) == 0 && path_fs[music_dir_length] == '/') /* remove musicDir prefix */ path_fs += music_dir_length + 1; else if (path_fs[0] == '/') /* not within musicDir */ return NULL; return fs_charset_to_utf8(buffer, path_fs); } static char *rpp2app_r(char *dst, const char *rel_path) { pfx_dir(dst, rel_path, strlen(rel_path), playlist_dir, playlist_dir_length); return dst; } const char * map_spl_path(void) { return playlist_dir; } const char * map_spl_utf8_to_fs(const char *name, char *buffer) { rpp2app_r(buffer, utf8_to_fs_charset(buffer, name)); g_strlcat(buffer, "." PLAYLIST_FILE_SUFFIX, MPD_PATH_MAX); return buffer; }