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/*
QWebSockets implements the WebSocket protocol as defined in RFC 6455.
Copyright (C) 2013 Kurt Pattyn (pattyn.kurt@gmail.com)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "handshakerequest_p.h"
#include <QString>
#include <QMap>
#include <QTextStream>
#include <QUrl>
#include <QList>
#include <QStringList>
#include "qwebsocketprotocol.h"
QT_BEGIN_NAMESPACE
/*!
\internal
*/
HandshakeRequest::HandshakeRequest(int port, bool isSecure) :
m_port(port),
m_isSecure(isSecure),
m_isValid(false),
m_headers(),
m_versions(),
m_key(),
m_origin(),
m_protocols(),
m_extensions(),
m_requestUrl()
{
}
/*!
\internal
*/
HandshakeRequest::~HandshakeRequest()
{
}
/*!
\internal
*/
void HandshakeRequest::clear()
{
m_port = -1;
m_isSecure = false;
m_isValid = false;
m_headers.clear();
m_versions.clear();
m_key.clear();
m_origin.clear();
m_protocols.clear();
m_extensions.clear();
m_requestUrl.clear();
}
/*!
\internal
*/
int HandshakeRequest::getPort() const
{
return m_requestUrl.port(m_port);
}
/*!
\internal
*/
bool HandshakeRequest::isSecure() const
{
return m_isSecure;
}
/*!
\internal
*/
bool HandshakeRequest::isValid() const
{
return m_isValid;
}
/*!
\internal
*/
QMap<QString, QString> HandshakeRequest::getHeaders() const
{
return m_headers;
}
/*!
\internal
*/
QList<QWebSocketProtocol::Version> HandshakeRequest::getVersions() const
{
return m_versions;
}
/*!
\internal
*/
QString HandshakeRequest::getResourceName() const
{
return m_requestUrl.path();
}
/*!
\internal
*/
QString HandshakeRequest::getKey() const
{
return m_key;
}
/*!
\internal
*/
QString HandshakeRequest::getHost() const
{
return m_requestUrl.host();
}
/*!
\internal
*/
QString HandshakeRequest::getOrigin() const
{
return m_origin;
}
/*!
\internal
*/
QList<QString> HandshakeRequest::getProtocols() const
{
return m_protocols;
}
/*!
\internal
*/
QList<QString> HandshakeRequest::getExtensions() const
{
return m_extensions;
}
/*!
\internal
*/
QUrl HandshakeRequest::getRequestUrl() const
{
return m_requestUrl;
}
/*!
\internal
*/
QTextStream &HandshakeRequest::readFromStream(QTextStream &textStream)
{
m_isValid = false;
clear();
if (textStream.status() == QTextStream::Ok)
{
QString requestLine = textStream.readLine();
QStringList tokens = requestLine.split(' ', QString::SkipEmptyParts);
QString verb = tokens[0];
QString resourceName = tokens[1];
QString httpProtocol = tokens[2];
bool conversionOk = false;
float httpVersion = httpProtocol.midRef(5).toFloat(&conversionOk);
QString headerLine = textStream.readLine();
m_headers.clear();
while (!headerLine.isEmpty())
{
QStringList headerField = headerLine.split(QString(": "), QString::SkipEmptyParts);
m_headers.insertMulti(headerField[0], headerField[1]);
headerLine = textStream.readLine();
}
QString host = m_headers.value("Host", "");
m_requestUrl = QUrl::fromEncoded(resourceName.toLatin1());
if (m_requestUrl.isRelative())
{
m_requestUrl.setHost(host);
}
if (m_requestUrl.scheme().isEmpty())
{
QString scheme = isSecure() ? "wss://" : "ws://";
m_requestUrl.setScheme(scheme);
}
QStringList versionLines = m_headers.values("Sec-WebSocket-Version");
Q_FOREACH(QString versionLine, versionLines)
{
QStringList versions = versionLine.split(",", QString::SkipEmptyParts);
Q_FOREACH(QString version, versions)
{
QWebSocketProtocol::Version ver = QWebSocketProtocol::versionFromString(version.trimmed());
m_versions << ver;
}
}
qStableSort(m_versions.begin(), m_versions.end(), qGreater<QWebSocketProtocol::Version>()); //sort in descending order
m_key = m_headers.value("Sec-WebSocket-Key", "");
QString upgrade = m_headers.value("Upgrade", ""); //must be equal to "websocket", case-insensitive
QString connection = m_headers.value("Connection", ""); //must contain "Upgrade", case-insensitive
QStringList connectionLine = connection.split(",", QString::SkipEmptyParts);
QStringList connectionValues;
Q_FOREACH(QString connection, connectionLine)
{
connectionValues << connection.trimmed();
}
//optional headers
m_origin = m_headers.value("Sec-WebSocket-Origin", "");
QStringList protocolLines = m_headers.values("Sec-WebSocket-Protocol");
Q_FOREACH(QString protocolLine, protocolLines)
{
QStringList protocols = protocolLine.split(",", QString::SkipEmptyParts);
Q_FOREACH(QString protocol, protocols)
{
m_protocols << protocol.trimmed();
}
}
QStringList extensionLines = m_headers.values("Sec-WebSocket-Extensions");
Q_FOREACH(QString extensionLine, extensionLines)
{
QStringList extensions = extensionLine.split(",", QString::SkipEmptyParts);
Q_FOREACH(QString extension, extensions)
{
m_extensions << extension.trimmed();
}
}
//TODO: authentication field
m_isValid = !(host.isEmpty() ||
resourceName.isEmpty() ||
m_versions.isEmpty() ||
m_key.isEmpty() ||
(verb != "GET") ||
(!conversionOk || (httpVersion < 1.1f)) ||
(upgrade.toLower() != "websocket") ||
(!connectionValues.contains("upgrade", Qt::CaseInsensitive)));
}
return textStream;
}
/*!
\internal
*/
QTextStream &operator >>(QTextStream &stream, HandshakeRequest &request)
{
return request.readFromStream(stream);
}
QT_END_NAMESPACE
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