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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
#include "qwebsocketprotocol_p.h"
#include <QtCore/QString>
#include <QtCore/QSet>
#include <QtCore/QtEndian>
QT_BEGIN_NAMESPACE
/*!
\namespace QWebSocketProtocol
\inmodule QtWebSockets
\brief Contains constants related to the WebSocket standard.
\since 5.3
*/
/*!
\enum QWebSocketProtocol::CloseCode
\inmodule QtWebSockets
The close codes supported by WebSockets V13
\value CloseCodeNormal Normal closure
\value CloseCodeGoingAway Going away
\value CloseCodeProtocolError Protocol error
\value CloseCodeDatatypeNotSupported Unsupported data
\value CloseCodeReserved1004 Reserved
\value CloseCodeMissingStatusCode No status received
\value CloseCodeAbnormalDisconnection Abnormal closure
\value CloseCodeWrongDatatype Invalid frame payload data
\value CloseCodePolicyViolated Policy violation
\value CloseCodeTooMuchData Message too big
\value CloseCodeMissingExtension Mandatory extension missing
\value CloseCodeBadOperation Internal server error
\value CloseCodeTlsHandshakeFailed TLS handshake failed
\sa QWebSocket::close()
*/
/*!
\enum QWebSocketProtocol::Version
\inmodule QtWebSockets
\brief The different defined versions of the WebSocket protocol.
For an overview of the differences between the different protocols, see
\l {pywebsocket's WebSocketProtocolSpec}.
\value VersionUnknown Unknown or unspecified version.
\value Version0 \l{hixie76} and \l{hybi-00}.
Works with key1, key2 and a key in the payload.
Attribute: Sec-WebSocket-Draft value 0.
Not supported by QtWebSockets.
\value Version4 \l{hybi-04}.
Changed handshake: key1, key2, key3
==> Sec-WebSocket-Key, Sec-WebSocket-Nonce, Sec-WebSocket-Accept
Sec-WebSocket-Draft renamed to Sec-WebSocket-Version
Sec-WebSocket-Version = 4.
Not supported by QtWebSockets.
\value Version5 \l{hybi-05}.
Sec-WebSocket-Version = 5
Removed Sec-WebSocket-Nonce
Added Sec-WebSocket-Accept.
Not supported by QtWebSockets.
\value Version6 Sec-WebSocket-Version = 6.
Not supported by QtWebSockets.
\value Version7 \l{hybi-07}.
Sec-WebSocket-Version = 7.
Not supported by QtWebSockets.
\value Version8 hybi-8, hybi-9, hybi-10, hybi-11 and hybi-12.
Status codes 1005 and 1006 are added and all codes are now unsigned
Internal error results in 1006.
Not supported by QtWebSockets.
\value Version13 hybi-13, hybi14, hybi-15, hybi-16, hybi-17 and \l{RFC 6455}.
Sec-WebSocket-Version = 13
Status code 1004 is now reserved
Added 1008, 1009 and 1010
Must support TLS
Clarify multiple version support.
Supported by QtWebSockets.
\value VersionLatest Refers to the latest known version to QtWebSockets.
*/
/*!
\enum QWebSocketProtocol::OpCode
\inmodule QtWebSockets
The frame opcodes as defined by the WebSockets standard
\value OpCodeContinue Continuation frame
\value OpCodeText Text frame
\value OpCodeBinary Binary frame
\value OpCodeReserved3 Reserved
\value OpCodeReserved4 Reserved
\value OpCodeReserved5 Reserved
\value OpCodeReserved6 Reserved
\value OpCodeReserved7 Reserved
\value OpCodeClose Close frame
\value OpCodePing Ping frame
\value OpCodePong Pong frame
\value OpCodeReservedB Reserved
\value OpCodeReservedC Reserved
\value OpCodeReservedD Reserved
\value OpCodeReservedE Reserved
\value OpCodeReservedF Reserved
\internal
*/
/*!
\fn QWebSocketProtocol::isOpCodeReserved(OpCode code)
Checks if \a code is a valid OpCode
\internal
*/
/*!
\fn QWebSocketProtocol::isCloseCodeValid(int closeCode)
Checks if \a closeCode is a valid WebSocket close code
\internal
*/
/*!
\fn QWebSocketProtocol::currentVersion()
Returns the latest version that WebSocket is supporting
\internal
*/
/*!
Parses the \a versionString and converts it to a Version value
\internal
*/
QWebSocketProtocol::Version QWebSocketProtocol::versionFromString(QStringView versionString)
{
bool ok = false;
Version version = VersionUnknown;
const int ver = versionString.toInt(&ok);
QSet<Version> supportedVersions;
supportedVersions << Version0 << Version4 << Version5 << Version6 << Version7 << Version8
<< Version13;
if (Q_LIKELY(ok) && (supportedVersions.contains(static_cast<Version>(ver))))
version = static_cast<Version>(ver);
return version;
}
/*!
Mask the \a payload with the given \a maskingKey and stores the result back in \a payload.
\internal
*/
void QWebSocketProtocol::mask(QByteArray *payload, quint32 maskingKey)
{
Q_ASSERT(payload);
mask(payload->data(), quint64(payload->size()), maskingKey);
}
/*!
Masks the \a payload of length \a size with the given \a maskingKey and
stores the result back in \a payload.
\internal
*/
void QWebSocketProtocol::mask(char *payload, quint64 size, quint32 maskingKey)
{
Q_ASSERT(payload);
const quint8 mask[] = { quint8((maskingKey & 0xFF000000u) >> 24),
quint8((maskingKey & 0x00FF0000u) >> 16),
quint8((maskingKey & 0x0000FF00u) >> 8),
quint8((maskingKey & 0x000000FFu))
};
quint64 i = 0;
while (size-- > 0)
*payload++ ^= mask[i++ % 4];
}
QT_END_NAMESPACE
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