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/*
* Copyright (C) 2008-2021 The QXmpp developers
*
* Authors:
* Linus Jahn
*
* Source:
* https://github.com/qxmpp-project/qxmpp
*
* This file is a part of QXmpp library.
*
* 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.
*
*/
#include "QXmppClient.h"
#include "QXmppClient_p.h"
#include "QXmppConstants_p.h"
#include "QXmppOutgoingClient.h"
#include "QXmppStartTlsPacket.h"
#include "QXmppStreamFeatures.h"
#include "QXmppTlsManager_p.h"
#include <QDomElement>
#include <QSslSocket>
/// \cond
QXmppTlsManager::QXmppTlsManager() = default;
bool QXmppTlsManager::handleStanza(const QDomElement &stanza)
{
if (QXmppStreamFeatures::isStreamFeatures(stanza) && !clientStream()->socket()->isEncrypted()) {
QXmppStreamFeatures features;
features.parse(stanza);
// determine TLS mode to use
const QXmppConfiguration::StreamSecurityMode localSecurity = client()->configuration().streamSecurityMode();
const QXmppStreamFeatures::Mode remoteSecurity = features.tlsMode();
if (!clientStream()->socket()->supportsSsl() &&
(localSecurity == QXmppConfiguration::TLSRequired ||
remoteSecurity == QXmppStreamFeatures::Required)) {
warning("Disconnecting since TLS is required, but SSL support is not available");
client()->disconnectFromServer();
return true;
}
if (localSecurity == QXmppConfiguration::TLSRequired &&
remoteSecurity == QXmppStreamFeatures::Disabled) {
warning("Disconnecting since TLS is required, but not supported by the server");
client()->disconnectFromServer();
return true;
}
if (clientStream()->socket()->supportsSsl() &&
localSecurity != QXmppConfiguration::TLSDisabled &&
remoteSecurity != QXmppStreamFeatures::Disabled) {
// enable TLS since it is supported by both parties
client()->sendPacket(QXmppStartTlsPacket());
return true;
}
}
if (QXmppStartTlsPacket::isStartTlsPacket(stanza, QXmppStartTlsPacket::Proceed)) {
debug("Starting encryption");
clientStream()->socket()->startClientEncryption();
return true;
}
return false;
}
/// \endcond
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