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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 QWEBSOCKET_P_H
#define QWEBSOCKET_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/QUrl>
#include <QtNetwork/QTcpSocket>
#include <QtNetwork/QHostAddress>
#ifndef QT_NO_NETWORKPROXY
#include <QtNetwork/QNetworkProxy>
#endif
#include <QtNetwork/QAuthenticator>
#ifndef QT_NO_SSL
#include <QtNetwork/QSslConfiguration>
#include <QtNetwork/QSslError>
#include <QtNetwork/QSslSocket>
#endif
#include <QtCore/QElapsedTimer>
#include <private/qobject_p.h>
#include "qwebsocket.h"
#include "qwebsockethandshakeoptions.h"
#include "qwebsocketprotocol.h"
#include "qwebsocketdataprocessor_p.h"
#include "qdefaultmaskgenerator_p.h"
#ifdef Q_OS_WASM
# include <emscripten/websocket.h>
#endif
QT_BEGIN_NAMESPACE
class QWebSocketHandshakeRequest;
class QWebSocketHandshakeResponse;
class QTcpSocket;
class QWebSocket;
class QMaskGenerator;
struct QWebSocketConfiguration
{
Q_DISABLE_COPY(QWebSocketConfiguration)
public:
QWebSocketConfiguration();
public:
#ifndef QT_NO_SSL
QSslConfiguration m_sslConfiguration;
QList<QSslError> m_ignoredSslErrors;
bool m_ignoreSslErrors;
#endif
#ifndef QT_NO_NETWORKPROXY
QNetworkProxy m_proxy;
#endif
QTcpSocket *m_pSocket;
};
class QWebSocketPrivate : public QObjectPrivate
{
Q_DISABLE_COPY(QWebSocketPrivate)
public:
Q_DECLARE_PUBLIC(QWebSocket)
explicit QWebSocketPrivate(const QString &origin,
QWebSocketProtocol::Version version);
~QWebSocketPrivate() override;
// both constants are taken from the default settings of Apache
// see: http://httpd.apache.org/docs/2.2/mod/core.html#limitrequestfieldsize and
// http://httpd.apache.org/docs/2.2/mod/core.html#limitrequestfields
static constexpr int MAX_HEADERLINE_LENGTH = 8 * 1024; // maximum length of a http request header line
static constexpr int MAX_HEADERLINES = 100; // maximum number of http request header lines
void init();
void abort();
QAbstractSocket::SocketError error() const;
QString errorString() const;
bool flush();
bool isValid() const;
QHostAddress localAddress() const;
quint16 localPort() const;
QAbstractSocket::PauseModes pauseMode() const;
QHostAddress peerAddress() const;
QString peerName() const;
quint16 peerPort() const;
#ifndef QT_NO_NETWORKPROXY
QNetworkProxy proxy() const;
void setProxy(const QNetworkProxy &networkProxy);
#endif
void setMaskGenerator(const QMaskGenerator *maskGenerator);
const QMaskGenerator *maskGenerator() const;
qint64 readBufferSize() const;
void resume();
void setPauseMode(QAbstractSocket::PauseModes pauseMode);
void setReadBufferSize(qint64 size);
QAbstractSocket::SocketState state() const;
QWebSocketProtocol::Version version() const;
QString resourceName() const;
QNetworkRequest request() const;
QString origin() const;
QWebSocketHandshakeOptions handshakeOptions() const;
QString protocol() const;
QString extension() const;
QWebSocketProtocol::CloseCode closeCode() const;
QString closeReason() const;
qint64 sendTextMessage(const QString &message);
qint64 sendBinaryMessage(const QByteArray &data);
#ifndef QT_NO_SSL
void ignoreSslErrors(const QList<QSslError> &errors);
void ignoreSslErrors();
void continueInterruptedHandshake();
void setSslConfiguration(const QSslConfiguration &sslConfiguration);
QSslConfiguration sslConfiguration() const;
void _q_updateSslConfiguration();
#endif
void closeGoingAway();
void close(QWebSocketProtocol::CloseCode closeCode, QString reason);
void open(const QNetworkRequest &request, const QWebSocketHandshakeOptions &options, bool mask);
void ping(const QByteArray &payload);
void setSocketState(QAbstractSocket::SocketState state);
void setMaxAllowedIncomingFrameSize(quint64 maxAllowedIncomingFrameSize);
quint64 maxAllowedIncomingFrameSize() const;
void setMaxAllowedIncomingMessageSize(quint64 maxAllowedIncomingMessageSize);
quint64 maxAllowedIncomingMessageSize() const;
static quint64 maxIncomingMessageSize();
static quint64 maxIncomingFrameSize();
void setOutgoingFrameSize(quint64 outgoingFrameSize);
quint64 outgoingFrameSize() const;
static quint64 maxOutgoingFrameSize();
#ifdef Q_OS_WASM
void setSocketClosed(const EmscriptenWebSocketCloseEvent *emCloseEvent);
QString closeCodeToString(QWebSocketProtocol::CloseCode code);
#endif
private:
QWebSocketPrivate(QTcpSocket *pTcpSocket, QWebSocketProtocol::Version version);
void setVersion(QWebSocketProtocol::Version version);
void setResourceName(const QString &resourceName);
void setRequest(const QNetworkRequest &request, const QWebSocketHandshakeOptions &options = {});
void setOrigin(const QString &origin);
void setProtocol(const QString &protocol);
void setExtension(const QString &extension);
void enableMasking(bool enable);
void setErrorString(const QString &errorString);
QStringList requestedSubProtocols() const;
void socketDestroyed(QObject *socket);
void processData();
void processPing(const QByteArray &data);
void processPong(const QByteArray &data);
void processClose(QWebSocketProtocol::CloseCode closeCode, QString closeReason);
void processHandshake(QTcpSocket *pSocket);
void processStateChanged(QAbstractSocket::SocketState socketState);
Q_REQUIRED_RESULT qint64 doWriteFrames(const QByteArray &data, bool isBinary);
void makeConnections(QTcpSocket *pTcpSocket);
void releaseConnections(const QTcpSocket *pTcpSocket);
QByteArray getFrameHeader(QWebSocketProtocol::OpCode opCode, quint64 payloadLength,
quint32 maskingKey, bool lastFrame);
QString calculateAcceptKey(const QByteArray &key) const;
QString createHandShakeRequest(QString resourceName,
QString host,
QString origin,
QString extensions,
const QStringList &options,
QByteArray key,
const QList<QPair<QString, QString> > &headers);
Q_REQUIRED_RESULT static QWebSocket *
upgradeFrom(QTcpSocket *tcpSocket,
const QWebSocketHandshakeRequest &request,
const QWebSocketHandshakeResponse &response,
QObject *parent = nullptr);
quint32 generateMaskingKey() const;
QByteArray generateKey() const;
Q_REQUIRED_RESULT qint64 writeFrames(const QList<QByteArray> &frames);
Q_REQUIRED_RESULT qint64 writeFrame(const QByteArray &frame);
void emitErrorOccurred(QAbstractSocket::SocketError error);
QTcpSocket *m_pSocket;
QString m_errorString;
QWebSocketProtocol::Version m_version;
QUrl m_resource;
QString m_resourceName;
QNetworkRequest m_request;
QWebSocketHandshakeOptions m_options;
QString m_origin;
QString m_protocol;
QString m_extension;
QAbstractSocket::SocketState m_socketState;
QAbstractSocket::PauseModes m_pauseMode;
qint64 m_readBufferSize;
// For WWW-Authenticate handling
QAuthenticator m_authenticator;
qint64 m_bytesToSkipBeforeNewResponse = 0;
QByteArray m_key; //identification key used in handshake requests
bool m_mustMask; //a server must not mask the frames it sends
bool m_isClosingHandshakeSent;
bool m_isClosingHandshakeReceived;
// For WWW-Authenticate handling
bool m_needsResendWithCredentials = false;
bool m_needsReconnect = false;
QWebSocketProtocol::CloseCode m_closeCode;
QString m_closeReason;
QElapsedTimer m_pingTimer;
QWebSocketDataProcessor *m_dataProcessor = new QWebSocketDataProcessor();
QWebSocketConfiguration m_configuration;
QMaskGenerator *m_pMaskGenerator;
QDefaultMaskGenerator m_defaultMaskGenerator;
quint64 m_outgoingFrameSize;
friend class QWebSocketServerPrivate;
#ifdef Q_OS_WASM
EMSCRIPTEN_WEBSOCKET_T m_socketContext = 0;
uint16_t m_readyState = 0;
#endif
};
QT_END_NAMESPACE
#endif // QWEBSOCKET_H
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