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
223
224
225
226
|
/*
* Copyright (C) 2003-2013 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.
*/
/**
* zip archive handling (requires zziplib)
*/
#include "config.h"
#include "ZzipArchivePlugin.hxx"
#include "ArchivePlugin.hxx"
#include "ArchiveFile.hxx"
#include "ArchiveVisitor.hxx"
#include "InputInternal.hxx"
#include "InputStream.hxx"
#include "InputPlugin.hxx"
#include "util/RefCount.hxx"
#include "util/Error.hxx"
#include "util/Domain.hxx"
#include <zzip/zzip.h>
#include <string.h>
class ZzipArchiveFile final : public ArchiveFile {
public:
RefCount ref;
ZZIP_DIR *const dir;
ZzipArchiveFile(ZZIP_DIR *_dir)
:ArchiveFile(zzip_archive_plugin), dir(_dir) {}
~ZzipArchiveFile() {
zzip_dir_close(dir);
}
void Unref() {
if (ref.Decrement())
delete this;
}
virtual void Close() override {
Unref();
}
virtual void Visit(ArchiveVisitor &visitor) override;
virtual input_stream *OpenStream(const char *path,
Mutex &mutex, Cond &cond,
Error &error) override;
};
extern const struct input_plugin zzip_input_plugin;
static constexpr Domain zzip_domain("zzip");
/* archive open && listing routine */
static ArchiveFile *
zzip_archive_open(const char *pathname, Error &error)
{
ZZIP_DIR *dir = zzip_dir_open(pathname, NULL);
if (dir == nullptr) {
error.Format(zzip_domain, "Failed to open ZIP file %s",
pathname);
return NULL;
}
return new ZzipArchiveFile(dir);
}
inline void
ZzipArchiveFile::Visit(ArchiveVisitor &visitor)
{
zzip_rewinddir(dir);
ZZIP_DIRENT dirent;
while (zzip_dir_read(dir, &dirent))
//add only files
if (dirent.st_size > 0)
visitor.VisitArchiveEntry(dirent.d_name);
}
/* single archive handling */
struct ZzipInputStream {
struct input_stream base;
ZzipArchiveFile *archive;
ZZIP_FILE *file;
ZzipInputStream(ZzipArchiveFile &_archive, const char *uri,
Mutex &mutex, Cond &cond,
ZZIP_FILE *_file)
:base(zzip_input_plugin, uri, mutex, cond),
archive(&_archive), file(_file) {
base.ready = true;
//we are seekable (but its not recommendent to do so)
base.seekable = true;
ZZIP_STAT z_stat;
zzip_file_stat(file, &z_stat);
base.size = z_stat.st_size;
archive->ref.Increment();
}
~ZzipInputStream() {
zzip_file_close(file);
archive->Unref();
}
};
input_stream *
ZzipArchiveFile::OpenStream(const char *pathname,
Mutex &mutex, Cond &cond,
Error &error)
{
ZZIP_FILE *_file = zzip_file_open(dir, pathname, 0);
if (_file == nullptr) {
error.Format(zzip_domain, "not found in the ZIP file: %s",
pathname);
return NULL;
}
ZzipInputStream *zis =
new ZzipInputStream(*this, pathname,
mutex, cond,
_file);
return &zis->base;
}
static void
zzip_input_close(struct input_stream *is)
{
ZzipInputStream *zis = (ZzipInputStream *)is;
delete zis;
}
static size_t
zzip_input_read(struct input_stream *is, void *ptr, size_t size,
Error &error)
{
ZzipInputStream *zis = (ZzipInputStream *)is;
int ret;
ret = zzip_file_read(zis->file, ptr, size);
if (ret < 0) {
error.Set(zzip_domain, "zzip_file_read() has failed");
return 0;
}
is->offset = zzip_tell(zis->file);
return ret;
}
static bool
zzip_input_eof(struct input_stream *is)
{
ZzipInputStream *zis = (ZzipInputStream *)is;
return (goffset)zzip_tell(zis->file) == is->size;
}
static bool
zzip_input_seek(struct input_stream *is,
goffset offset, int whence, Error &error)
{
ZzipInputStream *zis = (ZzipInputStream *)is;
zzip_off_t ofs = zzip_seek(zis->file, offset, whence);
if (ofs != -1) {
error.Set(zzip_domain, "zzip_seek() has failed");
is->offset = ofs;
return true;
}
return false;
}
/* exported structures */
static const char *const zzip_archive_extensions[] = {
"zip",
NULL
};
const struct input_plugin zzip_input_plugin = {
nullptr,
nullptr,
nullptr,
nullptr,
zzip_input_close,
nullptr,
nullptr,
nullptr,
nullptr,
zzip_input_read,
zzip_input_eof,
zzip_input_seek,
};
const struct archive_plugin zzip_archive_plugin = {
"zzip",
nullptr,
nullptr,
zzip_archive_open,
zzip_archive_extensions,
};
|
