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/*
* Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
* 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/>.
*/
#ifndef KEEPASSX_DATABASE_H
#define KEEPASSX_DATABASE_H
#include <QDateTime>
#include <QHash>
#include <QObject>
#include "crypto/kdf/Kdf.h"
#include "core/Uuid.h"
#include "keys/CompositeKey.h"
class Entry;
enum class EntryReferenceType;
class Group;
class Metadata;
class QTimer;
struct DeletedObject
{
Uuid uuid;
QDateTime deletionTime;
};
Q_DECLARE_TYPEINFO(DeletedObject, Q_MOVABLE_TYPE);
class Database : public QObject
{
Q_OBJECT
public:
enum CompressionAlgorithm
{
CompressionNone = 0,
CompressionGZip = 1
};
static const quint32 CompressionAlgorithmMax = CompressionGZip;
struct DatabaseData
{
Uuid cipher;
CompressionAlgorithm compressionAlgo;
QByteArray transformedMasterKey;
QSharedPointer<Kdf> kdf;
CompositeKey key;
bool hasKey;
QByteArray masterSeed;
QByteArray challengeResponseKey;
};
Database();
~Database() override;
Group* rootGroup();
const Group* rootGroup() const;
/**
* Sets group as the root group and takes ownership of it.
* Warning: Be careful when calling this method as it doesn't
* emit any notifications so e.g. models aren't updated.
* The caller is responsible for cleaning up the previous
root group.
*/
void setRootGroup(Group* group);
Metadata* metadata();
const Metadata* metadata() const;
Entry* resolveEntry(const Uuid& uuid);
Entry* resolveEntry(const QString& text, EntryReferenceType referenceType);
Group* resolveGroup(const Uuid& uuid);
QList<DeletedObject> deletedObjects();
void addDeletedObject(const DeletedObject& delObj);
void addDeletedObject(const Uuid& uuid);
Uuid cipher() const;
Database::CompressionAlgorithm compressionAlgo() const;
QSharedPointer<Kdf> kdf() const;
QByteArray transformedMasterKey() const;
const CompositeKey& key() const;
QByteArray challengeResponseKey() const;
bool challengeMasterSeed(const QByteArray& masterSeed);
void setCipher(const Uuid& cipher);
void setCompressionAlgo(Database::CompressionAlgorithm algo);
void setKdf(QSharedPointer<Kdf> kdf);
bool setKey(const CompositeKey& key, bool updateChangedTime = true,
bool updateTransformSalt = false);
bool hasKey() const;
bool verifyKey(const CompositeKey& key) const;
void recycleEntry(Entry* entry);
void recycleGroup(Group* group);
void emptyRecycleBin();
void setEmitModified(bool value);
void merge(const Database* other);
QString saveToFile(QString filePath);
/**
* Returns a unique id that is only valid as long as the Database exists.
*/
Uuid uuid();
bool changeKdf(QSharedPointer<Kdf> kdf);
static Database* databaseByUuid(const Uuid& uuid);
static Database* openDatabaseFile(QString fileName, CompositeKey key);
static Database* unlockFromStdin(QString databaseFilename, QString keyFilename = QString(""));
signals:
void groupDataChanged(Group* group);
void groupAboutToAdd(Group* group, int index);
void groupAdded();
void groupAboutToRemove(Group* group);
void groupRemoved();
void groupAboutToMove(Group* group, Group* toGroup, int index);
void groupMoved();
void nameTextChanged();
void modified();
void modifiedImmediate();
private slots:
void startModifiedTimer();
private:
Entry* findEntryRecursive(const Uuid& uuid, Group* group);
Entry* findEntryRecursive(const QString& text, EntryReferenceType referenceType, Group* group);
Group* findGroupRecursive(const Uuid& uuid, Group* group);
void createRecycleBin();
Metadata* const m_metadata;
Group* m_rootGroup;
QList<DeletedObject> m_deletedObjects;
QTimer* m_timer;
DatabaseData m_data;
bool m_emitModified;
Uuid m_uuid;
static QHash<Uuid, Database*> m_uuidMap;
};
#endif // KEEPASSX_DATABASE_H
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