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/* 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 void
mapper_set_music_dir(const char *path)
{
int ret;
struct stat st;
music_dir = g_strdup(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;
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;
}
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