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// Copyright (C) 2016 Kurt Pattyn <pattyn.kurt@gmail.com>.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QWEBSOCKETFRAME_P_H
#define QWEBSOCKETFRAME_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/QString>
#include <QtCore/QByteArray>
#include <QtCore/QCoreApplication>
#include <limits>
#include "qwebsockets_global.h"
#include "qwebsocketprotocol.h"
#include "qwebsocketprotocol_p.h"
QT_BEGIN_NAMESPACE
class QIODevice;
const quint64 MAX_FRAME_SIZE_IN_BYTES = std::numeric_limits<int>::max() - 1;
class Q_AUTOTEST_EXPORT QWebSocketFrame
{
Q_DECLARE_TR_FUNCTIONS(QWebSocketFrame)
public:
QWebSocketFrame() = default;
void setMaxAllowedFrameSize(quint64 maxAllowedFrameSize);
quint64 maxAllowedFrameSize() const;
static quint64 maxFrameSize();
QWebSocketProtocol::CloseCode closeCode() const;
QString closeReason() const;
bool isFinalFrame() const;
bool isControlFrame() const;
bool isDataFrame() const;
bool isContinuationFrame() const;
bool hasMask() const;
quint32 mask() const; //returns 0 if no mask
inline bool rsv1() const { return m_rsv1; }
inline bool rsv2() const { return m_rsv2; }
inline bool rsv3() const { return m_rsv3; }
QWebSocketProtocol::OpCode opCode() const;
QByteArray payload() const;
void clear();
bool isValid() const;
bool isDone() const;
void readFrame(QIODevice *pIoDevice);
private:
QString m_closeReason;
QByteArray m_payload;
quint64 m_length = 0;
quint32 m_mask = 0;
QWebSocketProtocol::CloseCode m_closeCode = QWebSocketProtocol::CloseCodeNormal;
QWebSocketProtocol::OpCode m_opCode = QWebSocketProtocol::OpCodeReservedC;
enum ProcessingState
{
PS_READ_HEADER,
PS_READ_PAYLOAD_LENGTH,
PS_READ_MASK,
PS_READ_PAYLOAD,
PS_DISPATCH_RESULT,
PS_WAIT_FOR_MORE_DATA
} m_processingState = PS_READ_HEADER;
bool m_isFinalFrame = true;
bool m_rsv1 = false;
bool m_rsv2 = false;
bool m_rsv3 = false;
bool m_isValid = false;
quint64 m_maxAllowedFrameSize = MAX_FRAME_SIZE_IN_BYTES;
ProcessingState readFrameHeader(QIODevice *pIoDevice);
ProcessingState readFramePayloadLength(QIODevice *pIoDevice);
ProcessingState readFrameMask(QIODevice *pIoDevice);
ProcessingState readFramePayload(QIODevice *pIoDevice);
void setError(QWebSocketProtocol::CloseCode code, const QString &closeReason);
bool checkValidity();
};
QT_END_NAMESPACE
#endif // QWEBSOCKETFRAME_P_H
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