1 /****************************************************************************
3 ** Last updated [dd/mm/yyyy]: 28/01/2007
5 ** pkzip 2.0 decompression.
7 ** Some of the code has been inspired by other open source projects,
8 ** (mainly Info-Zip and Gilles Vollant's minizip).
9 ** Compression and decompression actually uses the zlib library.
11 ** Copyright (C) 2007-2008 Angius Fabrizio. All rights reserved.
13 ** This file is part of the OSDaB project (http://osdab.sourceforge.net/).
15 ** This file may be distributed and/or modified under the terms of the
16 ** GNU General Public License version 2 as published by the Free Software
17 ** Foundation and appearing in the file LICENSE.GPL included in the
18 ** packaging of this file.
20 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
21 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
23 ** See the file LICENSE.GPL that came with this software distribution or
24 ** visit http://www.gnu.org/copyleft/gpl.html for GPL licensing information.
26 **********************************************************************/
32 // This file is not part of the Zip/UnZip API. It exists purely as an
33 // implementation detail. This header file may change from version to
34 // version without notice, or even be removed.
39 #ifndef OSDAB_UNZIP_P__H
40 #define OSDAB_UNZIP_P__H
43 #include "zipentry_p.h"
47 // zLib authors suggest using larger buffers (128K or 256K) for (de)compression (especially for inflate())
48 // we use a 256K buffer here - if you want to use this code on a pre-iceage mainframe please change it ;)
49 #define UNZIP_READ_BUFFER (256*1024)
56 // Replace this with whatever else you use to store/retrieve the password.
59 bool skipAllEncrypted
;
61 QMap
<QString
,ZipEntryP
*>* headers
;
65 char buffer1
[UNZIP_READ_BUFFER
];
66 char buffer2
[UNZIP_READ_BUFFER
];
68 unsigned char* uBuffer
;
69 const quint32
* crcTable
;
71 // Central Directory (CD) offset
73 // End of Central Directory (EOCD) offset
76 // Number of entries in the Central Directory (as to the EOCD record)
79 // The number of detected entries that have been skipped because of a non compatible format
80 quint16 unsupportedEntryCount
;
84 UnZip::ErrorCode
openArchive(QIODevice
* device
);
86 UnZip::ErrorCode
seekToCentralDirectory();
87 UnZip::ErrorCode
parseCentralDirectoryRecord();
88 UnZip::ErrorCode
parseLocalHeaderRecord(const QString
& path
, ZipEntryP
& entry
);
92 UnZip::ErrorCode
extractFile(const QString
& path
, ZipEntryP
& entry
, const QDir
& dir
, UnZip::ExtractionOptions options
);
93 UnZip::ErrorCode
extractFile(const QString
& path
, ZipEntryP
& entry
, QIODevice
* device
, UnZip::ExtractionOptions options
);
95 UnZip::ErrorCode
testPassword(quint32
* keys
, const QString
& file
, const ZipEntryP
& header
);
96 bool testKeys(const ZipEntryP
& header
, quint32
* keys
);
98 bool createDirectory(const QString
& path
);
100 inline void decryptBytes(quint32
* keys
, char* buffer
, qint64 read
);
102 inline quint32
getULong(const unsigned char* data
, quint32 offset
) const;
103 inline quint64
getULLong(const unsigned char* data
, quint32 offset
) const;
104 inline quint16
getUShort(const unsigned char* data
, quint32 offset
) const;
105 inline int decryptByte(quint32 key2
) const;
106 inline void updateKeys(quint32
* keys
, int c
) const;
107 inline void initKeys(const QString
& pwd
, quint32
* keys
) const;
109 inline QDateTime
convertDateTime(const unsigned char date
[2], const unsigned char time
[2]) const;
112 #endif // OSDAB_UNZIP_P__H