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/*
* Copyright (C) 2018 KeePassXC Team <team@keepassxc.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 or (at your option)
* version 3 of the License.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef KEEPASSXC_KDBXWRITER_H
#define KEEPASSXC_KDBXWRITER_H
#include "KeePass2.h"
#include "core/Endian.h"
#include <QCoreApplication>
#define CHECK_RETURN_FALSE(x) if (!(x)) return false;
class QIODevice;
class Database;
/**
* Abstract KDBX writer base class.
*/
class KdbxWriter
{
Q_DECLARE_TR_FUNCTIONS(KdbxWriter)
public:
KdbxWriter() = default;
virtual ~KdbxWriter() = default;
bool writeMagicNumbers(QIODevice* device, quint32 sig1, quint32 sig2, quint32 version);
/**
* Write a database to a device in KDBX format.
*
* @param device output device
* @param db source database
* @return true on success
*/
virtual bool writeDatabase(QIODevice* device, Database* db) = 0;
bool hasError() const;
QString errorString() const;
protected:
/**
* Helper method for writing a KDBX header field to a device.
*
* @tparam SizedQInt field width
* @param device output device
* @param fieldId field identifier
* @param data field contents
* @return true on success
*/
template <typename SizedQInt>
bool writeHeaderField(QIODevice* device, KeePass2::HeaderFieldID fieldId, const QByteArray& data)
{
Q_ASSERT(static_cast<unsigned long>(data.size()) < (1ull << (sizeof(SizedQInt) * 8)));
QByteArray fieldIdArr;
fieldIdArr[0] = static_cast<char>(fieldId);
CHECK_RETURN_FALSE(writeData(device, fieldIdArr));
CHECK_RETURN_FALSE(writeData(device, Endian::sizedIntToBytes<SizedQInt>(static_cast<SizedQInt>(data.size()),
KeePass2::BYTEORDER)));
CHECK_RETURN_FALSE(writeData(device, data));
return true;
}
bool writeData(QIODevice* device, const QByteArray& data);
void raiseError(const QString& errorMessage);
bool m_error = false;
QString m_errorStr = "";
};
#endif //KEEPASSXC_KDBXWRITER_H
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