130 lines
4.2 KiB
C++
Executable file
130 lines
4.2 KiB
C++
Executable file
/****************************************************************************
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** Filename: unzip_p.h
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** Last updated [dd/mm/yyyy]: 27/03/2011
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**
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** pkzip 2.0 decompression.
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**
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** Some of the code has been inspired by other open source projects,
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** (mainly Info-Zip and Gilles Vollant's minizip).
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** Compression and decompression actually uses the zlib library.
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**
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** Copyright (C) 2007-2012 Angius Fabrizio. All rights reserved.
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**
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** This file is part of the OSDaB project (http://osdab.42cows.org/).
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** See the file LICENSE.GPL that came with this software distribution or
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** visit http://www.gnu.org/copyleft/gpl.html for GPL licensing information.
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**
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**********************************************************************/
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Zip/UnZip API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#ifndef OSDAB_UNZIP_P__H
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#define OSDAB_UNZIP_P__H
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#include "unzip.h"
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#include "zipentry_p.h"
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#include <QtCore/QObject>
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#include <QtCore/QtGlobal>
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// zLib authors suggest using larger buffers (128K or 256K) for (de)compression (especially for inflate())
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// we use a 256K buffer here - if you want to use this code on a pre-iceage mainframe please change it ;)
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#define UNZIP_READ_BUFFER (256*1024)
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OSDAB_BEGIN_NAMESPACE(Zip)
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class UnzipPrivate : public QObject
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{
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Q_OBJECT
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public:
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UnzipPrivate();
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// Replace this with whatever else you use to store/retrieve the password.
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QString password;
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bool skipAllEncrypted;
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QMap<QString,ZipEntryP*>* headers;
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QIODevice* device;
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QFile* file;
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char buffer1[UNZIP_READ_BUFFER];
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char buffer2[UNZIP_READ_BUFFER];
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unsigned char* uBuffer;
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const quint32* crcTable;
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// Central Directory (CD) offset
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quint32 cdOffset;
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// End of Central Directory (EOCD) offset
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quint32 eocdOffset;
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// Number of entries in the Central Directory (as to the EOCD record)
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quint16 cdEntryCount;
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// The number of detected entries that have been skipped because of a non compatible format
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quint16 unsupportedEntryCount;
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QString comment;
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UnZip::ErrorCode openArchive(QIODevice* device);
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UnZip::ErrorCode seekToCentralDirectory();
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UnZip::ErrorCode parseCentralDirectoryRecord();
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UnZip::ErrorCode parseLocalHeaderRecord(const QString& path, const ZipEntryP& entry);
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void closeArchive();
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UnZip::ErrorCode extractFile(const QString& path, const ZipEntryP& entry, const QDir& dir, UnZip::ExtractionOptions options);
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UnZip::ErrorCode extractFile(const QString& path, const ZipEntryP& entry, QIODevice* device, UnZip::ExtractionOptions options);
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UnZip::ErrorCode testPassword(quint32* keys, const QString& file, const ZipEntryP& header);
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bool testKeys(const ZipEntryP& header, quint32* keys);
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bool createDirectory(const QString& path);
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inline void decryptBytes(quint32* keys, char* buffer, qint64 read);
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inline quint32 getULong(const unsigned char* data, quint32 offset) const;
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inline quint64 getULLong(const unsigned char* data, quint32 offset) const;
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inline quint16 getUShort(const unsigned char* data, quint32 offset) const;
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inline int decryptByte(quint32 key2) const;
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inline void updateKeys(quint32* keys, int c) const;
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inline void initKeys(const QString& pwd, quint32* keys) const;
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inline QDateTime convertDateTime(const unsigned char date[2], const unsigned char time[2]) const;
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private slots:
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void deviceDestroyed(QObject*);
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private:
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UnZip::ErrorCode extractStoredFile(const quint32 szComp, quint32** keys,
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quint32& myCRC, QIODevice* outDev, UnZip::ExtractionOptions options);
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UnZip::ErrorCode inflateFile(const quint32 szComp, quint32** keys,
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quint32& myCRC, QIODevice* outDev, UnZip::ExtractionOptions options);
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void do_closeArchive();
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};
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OSDAB_END_NAMESPACE
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#endif // OSDAB_UNZIP_P__H
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