1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*
* Copyright (C) 2003-2009 The Music Player Daemon Project
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* Maps directory and song objects to file system paths.
*/
#include "mapper.h"
#include "directory.h"
#include "song.h"
#include "path.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(const char *_music_dir, const char *_playlist_dir)
{
if (_music_dir != NULL)
mapper_set_music_dir(_music_dir);
if (_playlist_dir != NULL)
mapper_set_playlist_dir(_playlist_dir);
}
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;
}
|
