ae87abae59
Use GLIB_CHECK_VERSION() instead of manually checking GLIB_MAJOR_VERSION, ...
234 lines
4.8 KiB
C
234 lines
4.8 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2008 Max Kellermann <max@duempel.org>
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* Maps directory and song objects to file system paths.
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*/
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#include "mapper.h"
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#include "directory.h"
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#include "song.h"
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#include "path.h"
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#include "conf.h"
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#include <glib.h>
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#include <assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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static char *music_dir;
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static size_t music_dir_length;
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static char *playlist_dir;
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/**
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* Duplicate a string, chop all trailing slashes.
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*/
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static char *
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strdup_chop_slash(const char *path_fs)
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{
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size_t length = strlen(path_fs);
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while (length > 0 && path_fs[length - 1] == G_DIR_SEPARATOR)
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--length;
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return g_strndup(path_fs, length);
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}
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static void
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mapper_set_music_dir(const char *path)
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{
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int ret;
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struct stat st;
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music_dir = strdup_chop_slash(path);
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music_dir_length = strlen(music_dir);
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ret = stat(music_dir, &st);
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if (ret < 0)
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g_warning("failed to stat music directory \"%s\": %s",
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music_dir, g_strerror(errno));
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else if (!S_ISDIR(st.st_mode))
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g_warning("music directory is not a directory: \"%s\"",
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music_dir);
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}
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static void
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mapper_set_playlist_dir(const char *path)
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{
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int ret;
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struct stat st;
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playlist_dir = g_strdup(path);
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ret = stat(playlist_dir, &st);
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if (ret < 0)
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g_warning("failed to stat playlist directory \"%s\": %s",
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playlist_dir, g_strerror(errno));
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else if (!S_ISDIR(st.st_mode))
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g_warning("playlist directory is not a directory: \"%s\"",
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playlist_dir);
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}
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void mapper_init(void)
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{
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const char *path;
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path = config_get_path(CONF_MUSIC_DIR);
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if (path != NULL)
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mapper_set_music_dir(path);
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#if GLIB_CHECK_VERSION(2,14,0)
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else {
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path = g_get_user_special_dir(G_USER_DIRECTORY_MUSIC);
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if (path != NULL)
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mapper_set_music_dir(path);
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}
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#endif
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path = config_get_path(CONF_PLAYLIST_DIR);
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if (path != NULL)
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mapper_set_playlist_dir(path);
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}
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void mapper_finish(void)
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{
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g_free(music_dir);
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g_free(playlist_dir);
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}
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bool
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mapper_has_music_directory(void)
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{
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return music_dir != NULL;
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}
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char *
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map_uri_fs(const char *uri)
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{
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char *uri_fs, *path_fs;
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assert(uri != NULL);
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assert(*uri != '/');
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if (music_dir == NULL)
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return NULL;
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uri_fs = utf8_to_fs_charset(uri);
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if (uri_fs == NULL)
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return NULL;
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path_fs = g_build_filename(music_dir, uri_fs, NULL);
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g_free(uri_fs);
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return path_fs;
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}
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char *
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map_directory_fs(const struct directory *directory)
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{
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assert(music_dir != NULL);
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if (directory_is_root(directory))
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return g_strdup(music_dir);
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return map_uri_fs(directory_get_path(directory));
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}
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char *
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map_directory_child_fs(const struct directory *directory, const char *name)
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{
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char *name_fs, *parent_fs, *path;
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assert(music_dir != NULL);
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/* check for invalid or unauthorized base names */
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if (*name == 0 || strchr(name, '/') != NULL ||
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strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
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return NULL;
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parent_fs = map_directory_fs(directory);
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if (parent_fs == NULL)
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return NULL;
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name_fs = utf8_to_fs_charset(name);
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if (name_fs == NULL) {
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g_free(parent_fs);
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return NULL;
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}
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path = g_build_filename(parent_fs, name_fs, NULL);
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g_free(parent_fs);
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g_free(name_fs);
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return path;
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}
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char *
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map_song_fs(const struct song *song)
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{
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assert(song_is_file(song));
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if (song_in_database(song))
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return map_directory_child_fs(song->parent, song->url);
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else
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return utf8_to_fs_charset(song->url);
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}
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char *
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map_fs_to_utf8(const char *path_fs)
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{
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if (music_dir != NULL &&
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strncmp(path_fs, music_dir, music_dir_length) == 0 &&
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path_fs[music_dir_length] == '/')
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/* remove musicDir prefix */
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path_fs += music_dir_length + 1;
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else if (path_fs[0] == '/')
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/* not within musicDir */
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return NULL;
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while (path_fs[0] == G_DIR_SEPARATOR)
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++path_fs;
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return fs_charset_to_utf8(path_fs);
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}
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const char *
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map_spl_path(void)
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{
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return playlist_dir;
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}
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char *
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map_spl_utf8_to_fs(const char *name)
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{
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char *filename = g_strconcat(name, PLAYLIST_FILE_SUFFIX, NULL);
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char *path;
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if (playlist_dir == NULL)
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return NULL;
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path = g_build_filename(playlist_dir, filename, NULL);
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g_free(filename);
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return path;
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}
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