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/* This file is part of the KDE project
Copyright (C) 2006 Thomas Schaap <thomas.schaap@kdemail.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef KoEncryptedStore_h
#define KoEncryptedStore_h
#include "KoStore.h"
#include <QHash>
#include <QtCrypto>
class QString;
class QByteArray;
class QIODevice;
class QWidget;
class KUrl;
class KZip;
class KArchiveDirectory;
class KTemporaryFile;
struct KoEncryptedStore_EncryptionData;
class KoEncryptedStore : public KoStore
{
public:
KoEncryptedStore(const QString & filename, Mode mode, const QByteArray & appIdentification);
KoEncryptedStore(QIODevice *dev, Mode mode, const QByteArray & appIdentification);
KoEncryptedStore(QWidget* window, const KUrl& url, const QString & filename, Mode _mode, const QByteArray & appIdentification);
~KoEncryptedStore();
/*
* Sets the password to be used for decryption or encryption of the file.
*
* This method only works if no password has been set or found yet,
* i.e. when no file has been opened yet and this method hasn't been used yet.
*
* @param password A non-empty password.
*
* @return True if the password was set
*/
virtual bool setPassword(const QString& password);
/*
* Returns whether a store opened for reading is actually encrypted.
* This function will always return true in Write-mode.
*
* @return True if the store is encrypted.
*/
virtual bool isEncrypted();
protected:
using KoStore::init;
virtual bool init(Mode mode, const QByteArray& appIdentification);
virtual bool doFinalize();
virtual bool openWrite(const QString& name);
virtual bool openRead(const QString& name);
virtual bool closeWrite();
virtual bool closeRead();
virtual bool enterRelativeDirectory(const QString& dirName);
virtual bool enterAbsoluteDirectory(const QString& path);
virtual bool fileExists(const QString& absPath) const;
/**
* Tries and find a password for this document in KWallet.
* Uses m_filename as base for finding the password and stores it in m_password if found.
*/
void findPasswordInKWallet();
/*
* Retrieves the password used to encrypt or decrypt the store. Note that
* QString() will returned if no password has been given or the store is
* not encrypted.
*
* @return The password this store is encrypted with.
*/
virtual QString password();
/**
* Stores the password for this document in KWallet.
* Uses m_filename as base for storing the password and stores the value in m_password.
*/
void savePasswordInKWallet();
private:
QCA::SecureArray decryptFile(QCA::SecureArray & encryptedFile, KoEncryptedStore_EncryptionData & encData, QCA::SecureArray & password);
/** returns true if the file should be encrypted, false otherwise **/
bool isToBeEncrypted(const QString& fullpath);
protected:
QCA::Initializer m_qcaInit;
QHash<QString, KoEncryptedStore_EncryptionData> m_encryptionData;
QCA::SecureArray m_password;
QString m_filename;
QByteArray m_manifestBuffer;
KZip *m_pZip;
KTemporaryFile *m_tempFile;
bool m_bPasswordUsed;
bool m_bPasswordDeclined;
/** In "Read" mode this pointer is pointing to the
current directory in the archive to speed up the verification process */
const KArchiveDirectory* m_currentDir;
private:
Q_DECLARE_PRIVATE(KoStore)
};
#endif
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