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/*
* Copyright (c) 2010 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include "Limber/Server/ServerFromClientSession.h"
#include <boost/smart_ptr/make_shared.hpp>
#include <boost/bind.hpp>
#include "Swiften/Elements/ProtocolHeader.h"
#include "Limber/Server/UserRegistry.h"
#include "Swiften/Network/Connection.h"
#include "Swiften/StreamStack/XMPPLayer.h"
#include "Swiften/Elements/StreamFeatures.h"
#include "Swiften/Elements/ResourceBind.h"
#include "Swiften/Elements/StartSession.h"
#include "Swiften/Elements/IQ.h"
#include "Swiften/Elements/AuthSuccess.h"
#include "Swiften/Elements/AuthFailure.h"
#include "Swiften/Elements/AuthRequest.h"
#include "Swiften/SASL/PLAINMessage.h"
namespace Swift {
ServerFromClientSession::ServerFromClientSession(
const std::string& id,
boost::shared_ptr<Connection> connection,
PayloadParserFactoryCollection* payloadParserFactories,
PayloadSerializerCollection* payloadSerializers,
XMLParserFactory* xmlParserFactory,
UserRegistry* userRegistry) :
Session(connection, payloadParserFactories, payloadSerializers, xmlParserFactory),
id_(id),
userRegistry_(userRegistry),
authenticated_(false),
initialized(false),
allowSASLEXTERNAL(false) {
}
void ServerFromClientSession::handleElement(boost::shared_ptr<Element> element) {
if (isInitialized()) {
onElementReceived(element);
}
else {
if (AuthRequest* authRequest = dynamic_cast<AuthRequest*>(element.get())) {
if (authRequest->getMechanism() == "PLAIN" || (allowSASLEXTERNAL && authRequest->getMechanism() == "EXTERNAL")) {
if (authRequest->getMechanism() == "EXTERNAL") {
getXMPPLayer()->writeElement(boost::make_shared<AuthSuccess>());
authenticated_ = true;
getXMPPLayer()->resetParser();
}
else {
PLAINMessage plainMessage(authRequest->getMessage() ? *authRequest->getMessage() : createSafeByteArray(""));
if (userRegistry_->isValidUserPassword(JID(plainMessage.getAuthenticationID(), getLocalJID().getDomain()), plainMessage.getPassword())) {
getXMPPLayer()->writeElement(boost::make_shared<AuthSuccess>());
user_ = plainMessage.getAuthenticationID();
authenticated_ = true;
getXMPPLayer()->resetParser();
}
else {
getXMPPLayer()->writeElement(boost::shared_ptr<AuthFailure>(new AuthFailure));
finishSession(AuthenticationFailedError);
}
}
}
else {
getXMPPLayer()->writeElement(boost::shared_ptr<AuthFailure>(new AuthFailure));
finishSession(NoSupportedAuthMechanismsError);
}
}
else if (IQ* iq = dynamic_cast<IQ*>(element.get())) {
if (boost::shared_ptr<ResourceBind> resourceBind = iq->getPayload<ResourceBind>()) {
setRemoteJID(JID(user_, getLocalJID().getDomain(), resourceBind->getResource()));
boost::shared_ptr<ResourceBind> resultResourceBind(new ResourceBind());
resultResourceBind->setJID(getRemoteJID());
getXMPPLayer()->writeElement(IQ::createResult(JID(), iq->getID(), resultResourceBind));
}
else if (iq->getPayload<StartSession>()) {
getXMPPLayer()->writeElement(IQ::createResult(getRemoteJID(), iq->getID()));
setInitialized();
}
}
}
}
void ServerFromClientSession::handleStreamStart(const ProtocolHeader& incomingHeader) {
setLocalJID(JID("", incomingHeader.getTo()));
ProtocolHeader header;
header.setFrom(incomingHeader.getTo());
header.setID(id_);
getXMPPLayer()->writeHeader(header);
boost::shared_ptr<StreamFeatures> features(new StreamFeatures());
if (!authenticated_) {
features->addAuthenticationMechanism("PLAIN");
if (allowSASLEXTERNAL) {
features->addAuthenticationMechanism("EXTERNAL");
}
}
else {
features->setHasResourceBind();
features->setHasSession();
}
getXMPPLayer()->writeElement(features);
}
void ServerFromClientSession::setInitialized() {
initialized = true;
onSessionStarted();
}
void ServerFromClientSession::setAllowSASLEXTERNAL() {
allowSASLEXTERNAL = true;
}
}
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