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/*
* Copyright (C) 2017 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/>.
*/
#include <QtGlobal>
#include <QString>
#include <QFile>
#include "core/Endian.h"
#include "keys/CompositeKey.h"
#include "format/KeePass2Reader.h"
#include "format/KeePass1.h"
#include "format/KeePass2.h"
#include "format/Kdbx3Reader.h"
#include "format/Kdbx4Reader.h"
BaseKeePass2Reader::BaseKeePass2Reader()
: m_error(false)
, m_saveXml(false)
, m_irsAlgo(KeePass2::ProtectedStreamAlgo::InvalidProtectedStreamAlgo)
{
m_errorStr.clear();
m_xmlData.clear();
m_protectedStreamKey.clear();
}
Database* BaseKeePass2Reader::readDatabase(const QString& filename, const CompositeKey& key)
{
QFile file(filename);
if (!file.open(QFile::ReadOnly)) {
raiseError(file.errorString());
return nullptr;
}
QScopedPointer<Database> db(readDatabase(&file, key));
if (file.error() != QFile::NoError) {
raiseError(file.errorString());
return nullptr;
}
return db.take();
}
bool BaseKeePass2Reader::hasError()
{
return m_error;
}
QString BaseKeePass2Reader::errorString()
{
return m_errorStr;
}
void BaseKeePass2Reader::setSaveXml(bool save)
{
m_saveXml = save;
}
QByteArray BaseKeePass2Reader::xmlData()
{
return m_xmlData;
}
QByteArray BaseKeePass2Reader::streamKey()
{
return m_protectedStreamKey;
}
KeePass2::ProtectedStreamAlgo BaseKeePass2Reader::protectedStreamAlgo() const {
return m_irsAlgo;
}
void BaseKeePass2Reader::raiseError(const QString& errorMessage)
{
m_error = true;
m_errorStr = errorMessage;
}
Database* KeePass2Reader::readDatabase(QIODevice* device, const CompositeKey& key, bool keepDatabase)
{
m_error = false;
m_errorStr.clear();
bool ok;
quint32 signature1 = Endian::readSizedInt<quint32>(device, KeePass2::BYTEORDER, &ok);
if (!ok || signature1 != KeePass2::SIGNATURE_1) {
raiseError(tr("Not a KeePass database."));
return nullptr;
}
quint32 signature2 = Endian::readSizedInt<quint32>(device, KeePass2::BYTEORDER, &ok);
if (ok && signature2 == KeePass1::SIGNATURE_2) {
raiseError(tr("The selected file is an old KeePass 1 database (.kdb).\n\n"
"You can import it by clicking on Database > 'Import KeePass 1 database...'.\n"
"This is a one-way migration. You won't be able to open the imported "
"database with the old KeePassX 0.4 version."));
return nullptr;
}
else if (!ok || signature2 != KeePass2::SIGNATURE_2) {
raiseError(tr("Not a KeePass database."));
return nullptr;
}
m_version = Endian::readSizedInt<quint32>(device, KeePass2::BYTEORDER, &ok)
& KeePass2::FILE_VERSION_CRITICAL_MASK;
quint32 maxVersion = KeePass2::FILE_VERSION_4 & KeePass2::FILE_VERSION_CRITICAL_MASK;
if (!ok || (m_version < KeePass2::FILE_VERSION_MIN) || (m_version > maxVersion)) {
raiseError(tr("Unsupported KeePass 2 database version."));
return nullptr;
}
device->seek(0);
// Determine KDBX3 vs KDBX4
if (m_version < KeePass2::FILE_VERSION_4) {
m_reader.reset(new Kdbx3Reader());
} else {
m_reader.reset(new Kdbx4Reader());
}
m_reader->setSaveXml(m_saveXml);
return m_reader->readDatabase(device, key, keepDatabase);
}
bool KeePass2Reader::hasError()
{
return m_error || (!m_reader.isNull() && m_reader->hasError());
}
QString KeePass2Reader::errorString()
{
return !m_reader.isNull() ? m_reader->errorString() : m_errorStr;
}
QByteArray KeePass2Reader::xmlData()
{
return !m_reader.isNull() ? m_reader->xmlData() : m_xmlData;
}
QByteArray KeePass2Reader::streamKey()
{
return !m_reader.isNull() ? m_reader->streamKey() : m_protectedStreamKey;
}
KeePass2::ProtectedStreamAlgo KeePass2Reader::protectedStreamAlgo() const
{
return !m_reader.isNull() ? m_reader->protectedStreamAlgo() : m_irsAlgo;
}
quint32 KeePass2Reader::version() const
{
return m_version;
}
QSharedPointer<BaseKeePass2Reader> KeePass2Reader::reader()
{
return m_reader;
}
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