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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 "format/KeePass2Reader.h"
#include "format/Kdbx3Reader.h"
#include "format/Kdbx4Reader.h"
#include "format/KeePass1.h"
#include <QFile>
/**
* Read database from file and detect correct file format.
*
* @param filename input file
* @param key database encryption composite key
* @param db Database to read into
* @return true on success
*/
bool KeePass2Reader::readDatabase(const QString& filename, QSharedPointer<const CompositeKey> key, Database* db)
{
QFile file(filename);
if (!file.open(QFile::ReadOnly)) {
raiseError(file.errorString());
return false;
}
bool ok = readDatabase(&file, std::move(key), db);
if (file.error() != QFile::NoError) {
raiseError(file.errorString());
return false;
}
return ok;
}
/**
* Read database from device and detect correct file format.
*
* @param device input device
* @param key database encryption composite key
* @param db Database to read into
* @return true on success
*/
bool KeePass2Reader::readDatabase(QIODevice* device, QSharedPointer<const CompositeKey> key, Database* db)
{
m_error = false;
m_errorStr.clear();
quint32 signature1, signature2;
bool ok = KdbxReader::readMagicNumbers(device, signature1, signature2, m_version);
if (!ok) {
raiseError(tr("Failed to read database file."));
return false;
}
if (signature1 == KeePass1::SIGNATURE_1 && 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 false;
} else if (!(signature1 == KeePass2::SIGNATURE_1 && signature2 == KeePass2::SIGNATURE_2)) {
raiseError(tr("Not a KeePass database."));
return false;
}
// mask out minor version
m_version &= KeePass2::FILE_VERSION_CRITICAL_MASK;
quint32 maxVersion = KeePass2::FILE_VERSION_4 & KeePass2::FILE_VERSION_CRITICAL_MASK;
if (m_version < KeePass2::FILE_VERSION_MIN || m_version > maxVersion) {
raiseError(tr("Unsupported KeePass 2 database version."));
return false;
}
// determine file format (KDBX 2/3 or 4)
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, std::move(key), db);
}
bool KeePass2Reader::hasError() const
{
return m_error || (!m_reader.isNull() && m_reader->hasError());
}
QString KeePass2Reader::errorString() const
{
return !m_reader.isNull() ? m_reader->errorString() : m_errorStr;
}
bool KeePass2Reader::saveXml() const
{
return m_saveXml;
}
void KeePass2Reader::setSaveXml(bool save)
{
m_saveXml = save;
}
/**
* @return detected KDBX version
*/
quint32 KeePass2Reader::version() const
{
return m_version;
}
/**
* @return KDBX reader used for reading the input file
*/
QSharedPointer<KdbxReader> KeePass2Reader::reader() const
{
return m_reader;
}
/**
* Raise an error. Use in case of an unexpected read error.
*
* @param errorMessage error message
*/
void KeePass2Reader::raiseError(const QString& errorMessage)
{
m_error = true;
m_errorStr = errorMessage;
}
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