/* 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; /** * Duplicate a string, chop all trailing slashes. */ static char * strdup_chop_slash(const char *path_fs) { size_t length = strlen(path_fs); while (length > 0 && path_fs[length - 1] == G_DIR_SEPARATOR) --length; return g_strndup(path_fs, length); } static void mapper_set_music_dir(const char *path) { int ret; struct stat st; music_dir = strdup_chop_slash(path); music_dir_length = strlen(music_dir); ret = stat(music_dir, &st); if (ret < 0) g_warning("failed to stat music directory \"%s\": %s", music_dir, g_strerror(errno)); else if (!S_ISDIR(st.st_mode)) g_warning("music directory is not a directory: \"%s\"", music_dir); } static void mapper_set_playlist_dir(const char *path) { int ret; struct stat st; playlist_dir = g_strdup(path); ret = stat(playlist_dir, &st); if (ret < 0) g_warning("failed to stat playlist directory \"%s\": %s", playlist_dir, g_strerror(errno)); else if (!S_ISDIR(st.st_mode)) g_warning("playlist directory is not a directory: \"%s\"", playlist_dir); } void mapper_init(void) { const char *path; path = config_get_path(CONF_MUSIC_DIR); if (path != NULL) mapper_set_music_dir(path); #if GLIB_MAJOR_VERSION > 2 || (GLIB_MAJOR_VERSION == 2 && GLIB_MINOR_VERSION >= 14) else { path = g_get_user_special_dir(G_USER_DIRECTORY_MUSIC); if (path != NULL) mapper_set_music_dir(path); } #endif path = config_get_path(CONF_PLAYLIST_DIR); if (path != NULL) mapper_set_playlist_dir(path); } void mapper_finish(void) { g_free(music_dir); g_free(playlist_dir); } bool mapper_has_music_directory(void) { return music_dir != NULL; } char * map_uri_fs(const char *uri) { char *uri_fs, *path_fs; assert(uri != NULL); assert(*uri != '/'); if (music_dir == NULL) return NULL; uri_fs = utf8_to_fs_charset(uri); if (uri_fs == NULL) return NULL; path_fs = g_build_filename(music_dir, uri_fs, NULL); g_free(uri_fs); return path_fs; } char * map_directory_fs(const struct directory *directory) { assert(music_dir != NULL); if (directory_is_root(directory)) return g_strdup(music_dir); return map_uri_fs(directory_get_path(directory)); } char * map_directory_child_fs(const struct directory *directory, const char *name) { char *name_fs, *parent_fs, *path; assert(music_dir != NULL); /* 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); if (parent_fs == NULL) return NULL; name_fs = utf8_to_fs_charset(name); if (name_fs == NULL) { g_free(parent_fs); return NULL; } path = g_build_filename(parent_fs, name_fs, NULL); g_free(parent_fs); g_free(name_fs); return path; } char * map_song_fs(const struct song *song) { assert(song_is_file(song)); if (song_in_database(song)) return map_directory_child_fs(song->parent, song->url); else return utf8_to_fs_charset(song->url); } char * map_fs_to_utf8(const char *path_fs) { if (music_dir != NULL && 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; while (path_fs[0] == G_DIR_SEPARATOR) ++path_fs; return fs_charset_to_utf8(path_fs); } const char * map_spl_path(void) { return playlist_dir; } char * map_spl_utf8_to_fs(const char *name) { char *filename = g_strconcat(name, PLAYLIST_FILE_SUFFIX, NULL); char *path; if (playlist_dir == NULL) return NULL; path = g_build_filename(playlist_dir, filename, NULL); g_free(filename); return path; }