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/*
* Copyright 2008 Ben Boeckel <MathStuf@gmail.com>
*
* 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 3 of the License, or
* (at your option) any later version.
*
* 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 SIGNET_PROTOCOL_CHALLENGEMEDIATOR
#define SIGNET_PROTOCOL_CHALLENGEMEDIATOR
// Signet includes
#include "../Global.h"
// Qt includes
#include <QtCore/QStringList>
// Forward declarations
class QTcpSocket;
namespace Signet
{
namespace Protocol
{
class SIGNET_IMPORT ChallengeMediator
{
public:
enum Error
{
NoError = 0,
UnknownUser = 1,
ClientFailed = 2,
ServerFailed = 3,
SocketError = 4,
UnexpectedError = 5,
SideError = 6,
ReceiverError = 7
};
enum Side
{
Client = 0,
Server = 1
};
ChallengeMediator(QTcpSocket* socket, Side side, const QStringList& receivers = QStringList());
Error challenge(const QByteArray& id, const QByteArray& secret);
Error challenged(const QByteArray& secret);
protected:
static QByteArray generateChallengeKey();
static QByteArray generateResponse(const QByteArray& key1, const QByteArray& key2, const QByteArray& secret);
void init(const QByteArray& id);
void sendServerKey(const QByteArray& serverKey);
void recvServerKey(QByteArray* serverKey);
void sendClientResponse(const QByteArray& clientKey, const QByteArray& clientResponse);
void recvClientResponse(QByteArray* clientKey, QByteArray* clientResponse);
void sendServerResponse(const QByteArray& serverResponse);
void recvServerResponse(QByteArray* serverResponse);
void recvClientAnswer();
void notifyServerFail();
void notifyServerPass();
void notifyClientFail();
void notifyClientUnknown();
private:
const Side m_side;
const QStringList& m_receivers;
Error m_error;
QTcpSocket* m_socket;
};
}
}
#endif
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