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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 <Swiften/Session/BasicSessionStream.h>
#include <boost/bind.hpp>
#include <Swiften/StreamStack/XMPPLayer.h>
#include <Swiften/StreamStack/StreamStack.h>
#include <Swiften/StreamStack/ConnectionLayer.h>
#include <Swiften/StreamStack/WhitespacePingLayer.h>
#include <Swiften/StreamStack/CompressionLayer.h>
#include <Swiften/StreamStack/TLSLayer.h>
#include <Swiften/TLS/TLSContextFactory.h>
#include <Swiften/TLS/TLSContext.h>
namespace Swift {
BasicSessionStream::BasicSessionStream(
StreamType streamType,
boost::shared_ptr<Connection> connection,
PayloadParserFactoryCollection* payloadParserFactories,
PayloadSerializerCollection* payloadSerializers,
TLSContextFactory* tlsContextFactory,
TimerFactory* timerFactory) :
available(false),
connection(connection),
payloadParserFactories(payloadParserFactories),
payloadSerializers(payloadSerializers),
tlsContextFactory(tlsContextFactory),
timerFactory(timerFactory),
streamType(streamType),
compressionLayer(NULL),
tlsLayer(NULL),
whitespacePingLayer(NULL) {
xmppLayer = new XMPPLayer(payloadParserFactories, payloadSerializers, streamType);
xmppLayer->onStreamStart.connect(boost::bind(&BasicSessionStream::handleStreamStartReceived, this, _1));
xmppLayer->onElement.connect(boost::bind(&BasicSessionStream::handleElementReceived, this, _1));
xmppLayer->onError.connect(boost::bind(&BasicSessionStream::handleXMPPError, this));
xmppLayer->onDataRead.connect(boost::bind(&BasicSessionStream::handleDataRead, this, _1));
xmppLayer->onWriteData.connect(boost::bind(&BasicSessionStream::handleDataWritten, this, _1));
connection->onDisconnected.connect(boost::bind(&BasicSessionStream::handleConnectionFinished, this, _1));
connectionLayer = new ConnectionLayer(connection);
streamStack = new StreamStack(xmppLayer, connectionLayer);
available = true;
}
BasicSessionStream::~BasicSessionStream() {
delete compressionLayer;
if (tlsLayer) {
tlsLayer->onError.disconnect(boost::bind(&BasicSessionStream::handleTLSError, this));
tlsLayer->onConnected.disconnect(boost::bind(&BasicSessionStream::handleTLSConnected, this));
delete tlsLayer;
}
delete whitespacePingLayer;
delete streamStack;
connection->onDisconnected.disconnect(boost::bind(&BasicSessionStream::handleConnectionFinished, this, _1));
delete connectionLayer;
xmppLayer->onStreamStart.disconnect(boost::bind(&BasicSessionStream::handleStreamStartReceived, this, _1));
xmppLayer->onElement.disconnect(boost::bind(&BasicSessionStream::handleElementReceived, this, _1));
xmppLayer->onError.disconnect(boost::bind(&BasicSessionStream::handleXMPPError, this));
xmppLayer->onDataRead.disconnect(boost::bind(&BasicSessionStream::handleDataRead, this, _1));
xmppLayer->onWriteData.disconnect(boost::bind(&BasicSessionStream::handleDataWritten, this, _1));
delete xmppLayer;
}
void BasicSessionStream::writeHeader(const ProtocolHeader& header) {
assert(available);
xmppLayer->writeHeader(header);
}
void BasicSessionStream::writeElement(boost::shared_ptr<Element> element) {
assert(available);
xmppLayer->writeElement(element);
}
void BasicSessionStream::writeFooter() {
assert(available);
xmppLayer->writeFooter();
}
void BasicSessionStream::writeData(const std::string& data) {
assert(available);
xmppLayer->writeData(data);
}
void BasicSessionStream::close() {
connection->disconnect();
}
bool BasicSessionStream::isOpen() {
return available;
}
bool BasicSessionStream::supportsTLSEncryption() {
return tlsContextFactory && tlsContextFactory->canCreate();
}
void BasicSessionStream::addTLSEncryption() {
assert(available);
tlsLayer = new TLSLayer(tlsContextFactory);
if (hasTLSCertificate() && !tlsLayer->setClientCertificate(getTLSCertificate())) {
onClosed(boost::shared_ptr<Error>(new Error(Error::InvalidTLSCertificateError)));
}
else {
streamStack->addLayer(tlsLayer);
tlsLayer->onError.connect(boost::bind(&BasicSessionStream::handleTLSError, this));
tlsLayer->onConnected.connect(boost::bind(&BasicSessionStream::handleTLSConnected, this));
tlsLayer->connect();
}
}
bool BasicSessionStream::isTLSEncrypted() {
return tlsLayer;
}
Certificate::ref BasicSessionStream::getPeerCertificate() const {
return tlsLayer->getPeerCertificate();
}
boost::shared_ptr<CertificateVerificationError> BasicSessionStream::getPeerCertificateVerificationError() const {
return tlsLayer->getPeerCertificateVerificationError();
}
ByteArray BasicSessionStream::getTLSFinishMessage() const {
return tlsLayer->getContext()->getFinishMessage();
}
void BasicSessionStream::addZLibCompression() {
compressionLayer = new CompressionLayer();
streamStack->addLayer(compressionLayer);
}
void BasicSessionStream::setWhitespacePingEnabled(bool enabled) {
if (enabled) {
if (!whitespacePingLayer) {
whitespacePingLayer = new WhitespacePingLayer(timerFactory);
streamStack->addLayer(whitespacePingLayer);
}
whitespacePingLayer->setActive();
}
else if (whitespacePingLayer) {
whitespacePingLayer->setInactive();
}
}
void BasicSessionStream::resetXMPPParser() {
xmppLayer->resetParser();
}
void BasicSessionStream::handleStreamStartReceived(const ProtocolHeader& header) {
onStreamStartReceived(header);
}
void BasicSessionStream::handleElementReceived(boost::shared_ptr<Element> element) {
onElementReceived(element);
}
void BasicSessionStream::handleXMPPError() {
available = false;
onClosed(boost::shared_ptr<Error>(new Error(Error::ParseError)));
}
void BasicSessionStream::handleTLSConnected() {
onTLSEncrypted();
}
void BasicSessionStream::handleTLSError() {
available = false;
onClosed(boost::shared_ptr<Error>(new Error(Error::TLSError)));
}
void BasicSessionStream::handleConnectionFinished(const boost::optional<Connection::Error>& error) {
available = false;
if (error == Connection::ReadError) {
onClosed(boost::shared_ptr<Error>(new Error(Error::ConnectionReadError)));
}
else if (error) {
onClosed(boost::shared_ptr<Error>(new Error(Error::ConnectionWriteError)));
}
else {
onClosed(boost::shared_ptr<Error>());
}
}
void BasicSessionStream::handleDataRead(const ByteArray& data) {
onDataRead(data.toString());
}
void BasicSessionStream::handleDataWritten(const ByteArray& data) {
onDataWritten(data.toString());
}
};
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Swift