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/*
* Copyright (c) 2010-2018 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/Session/BasicSessionStream.h>
#include <memory>
#include <boost/bind.hpp>
#include <Swiften/StreamStack/CompressionLayer.h>
#include <Swiften/StreamStack/ConnectionLayer.h>
#include <Swiften/StreamStack/StreamStack.h>
#include <Swiften/StreamStack/TLSLayer.h>
#include <Swiften/StreamStack/WhitespacePingLayer.h>
#include <Swiften/StreamStack/XMPPLayer.h>
#include <Swiften/TLS/TLSContext.h>
#include <Swiften/TLS/TLSContextFactory.h>
namespace Swift {
BasicSessionStream::BasicSessionStream(
StreamType streamType,
std::shared_ptr<Connection> connection,
PayloadParserFactoryCollection* payloadParserFactories,
PayloadSerializerCollection* payloadSerializers,
TLSContextFactory* tlsContextFactory,
TimerFactory* timerFactory,
XMLParserFactory* xmlParserFactory,
const TLSOptions& tlsOptions) :
available(false),
connection(connection),
tlsContextFactory(tlsContextFactory),
timerFactory(timerFactory),
tlsOptions_(tlsOptions) {
xmppLayer = new XMPPLayer(payloadParserFactories, payloadSerializers, xmlParserFactory, streamType);
xmppLayer->onStreamStart.connect(boost::bind(&BasicSessionStream::handleStreamStartReceived, this, _1));
xmppLayer->onStreamEnd.connect(boost::bind(&BasicSessionStream::handleStreamEndReceived, this));
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() {
if (auto tlsLayer = streamStack->getLayer<TLSLayer>()) {
tlsLayer->onError.disconnect(boost::bind(&BasicSessionStream::handleTLSError, this, _1));
tlsLayer->onConnected.disconnect(boost::bind(&BasicSessionStream::handleTLSConnected, this));
}
delete streamStack;
connection->onDisconnected.disconnect(boost::bind(&BasicSessionStream::handleConnectionFinished, this, _1));
delete connectionLayer;
xmppLayer->onStreamStart.disconnect(boost::bind(&BasicSessionStream::handleStreamStartReceived, this, _1));
xmppLayer->onStreamEnd.disconnect(boost::bind(&BasicSessionStream::handleStreamEndReceived, this));
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(std::shared_ptr<ToplevelElement> 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);
auto tlsContext = tlsContextFactory->createTLSContext(tlsOptions_);
auto tlsLayer = std::make_unique<TLSLayer>(std::move(tlsContext));
if (hasTLSCertificate() && !tlsLayer->setClientCertificate(getTLSCertificate())) {
onClosed(std::make_shared<SessionStreamError>(SessionStreamError::InvalidTLSCertificateError));
}
else {
streamStack->addLayer(std::move(tlsLayer));
auto tlsLayer = streamStack->getLayer<TLSLayer>();
tlsLayer->onError.connect(boost::bind(&BasicSessionStream::handleTLSError, this, _1));
tlsLayer->onConnected.connect(boost::bind(&BasicSessionStream::handleTLSConnected, this));
tlsLayer->connect();
}
}
bool BasicSessionStream::isTLSEncrypted() {
return streamStack->getLayer<TLSLayer>() != nullptr;
}
Certificate::ref BasicSessionStream::getPeerCertificate() const {
return streamStack->getLayer<TLSLayer>()->getPeerCertificate();
}
std::vector<Certificate::ref> BasicSessionStream::getPeerCertificateChain() const {
return streamStack->getLayer<TLSLayer>()->getPeerCertificateChain();
}
std::shared_ptr<CertificateVerificationError> BasicSessionStream::getPeerCertificateVerificationError() const {
return streamStack->getLayer<TLSLayer>()->getPeerCertificateVerificationError();
}
ByteArray BasicSessionStream::getTLSFinishMessage() const {
return streamStack->getLayer<TLSLayer>()->getContext()->getFinishMessage();
}
bool BasicSessionStream::supportsZLibCompression() {
return true;
}
void BasicSessionStream::addZLibCompression() {
auto compressionLayer = std::make_unique<CompressionLayer>();
streamStack->addLayer(std::move(compressionLayer));
}
void BasicSessionStream::setWhitespacePingEnabled(bool enabled) {
auto whitespacePingLayer = streamStack->getLayer<WhitespacePingLayer>();
if (enabled) {
if (!whitespacePingLayer) {
streamStack->addLayer(std::make_unique<WhitespacePingLayer>(timerFactory));
whitespacePingLayer = streamStack->getLayer<WhitespacePingLayer>();
}
whitespacePingLayer->setActive();
}
else if (whitespacePingLayer) {
whitespacePingLayer->setInactive();
}
}
void BasicSessionStream::resetXMPPParser() {
xmppLayer->resetParser();
}
void BasicSessionStream::handleStreamStartReceived(const ProtocolHeader& header) {
onStreamStartReceived(header);
}
void BasicSessionStream::handleStreamEndReceived() {
onStreamEndReceived();
}
void BasicSessionStream::handleElementReceived(std::shared_ptr<ToplevelElement> element) {
onElementReceived(element);
}
void BasicSessionStream::handleXMPPError() {
available = false;
onClosed(std::make_shared<SessionStreamError>(SessionStreamError::ParseError));
}
void BasicSessionStream::handleTLSConnected() {
onTLSEncrypted();
}
void BasicSessionStream::handleTLSError(std::shared_ptr<TLSError> error) {
available = false;
onClosed(error);
}
void BasicSessionStream::handleConnectionFinished(const boost::optional<Connection::Error>& error) {
available = false;
if (error == Connection::ReadError) {
onClosed(std::make_shared<SessionStreamError>(SessionStreamError::ConnectionReadError));
}
else if (error) {
onClosed(std::make_shared<SessionStreamError>(SessionStreamError::ConnectionWriteError));
}
else {
onClosed(std::shared_ptr<SessionStreamError>());
}
}
void BasicSessionStream::handleDataRead(const SafeByteArray& data) {
onDataRead(data);
}
void BasicSessionStream::handleDataWritten(const SafeByteArray& data) {
onDataWritten(data);
}
}
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Swift