Files @ 0729d364ca25
Branch filter:

Location: libtransport.git/include/Swiften/Server/ServerStanzaChannel.cpp

Vladimír Matěna
Fix double free in DummyConnectionServer

Do not create shared ptr from this as this lead to double free in
UserRegistryTest::login test. Shared ptr was needed to set event
owner in acceptConnection, actually it is never needed as events
are never filtered by owner. Thus it was removed and there is no
need to create shared ptr from this.
/*
 * Copyright (c) 2010 Remko Tronçon
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#include "Swiften/Server/ServerStanzaChannel.h"
#include "Swiften/Base/Error.h"
#include <iostream>

#include <boost/bind.hpp>

namespace Swift {

namespace {
// 	struct PriorityLessThan {
// 		bool operator()(const ServerSession* s1, const ServerSession* s2) const {
// 			return s1->getPriority() < s2->getPriority();
// 		}
// 	};

	struct HasJID {
		HasJID(const JID& jid) : jid(jid) {}
		bool operator()(const SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> session) const {
			return session->getRemoteJID().equals(jid, JID::WithResource);
		}
		JID jid;
	};
}

void ServerStanzaChannel::addSession(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> session) {
	sessions[session->getRemoteJID().toBare().toString()].push_back(session);
	session->onSessionFinished.connect(boost::bind(&ServerStanzaChannel::handleSessionFinished, this, _1, session));
	session->onElementReceived.connect(boost::bind(&ServerStanzaChannel::handleElement, this, _1, session));
	session->onDataRead.connect(boost::bind(&ServerStanzaChannel::handleDataRead, this, _1, session));
}

void ServerStanzaChannel::removeSession(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> session) {
	session->onSessionFinished.disconnect(boost::bind(&ServerStanzaChannel::handleSessionFinished, this, _1, session));
	session->onElementReceived.disconnect(boost::bind(&ServerStanzaChannel::handleElement, this, _1, session));
	session->onDataRead.disconnect(boost::bind(&ServerStanzaChannel::handleDataRead, this, _1, session));
	std::list<SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> > &lst = sessions[session->getRemoteJID().toBare().toString()];
	lst.erase(std::remove(lst.begin(), lst.end(), session), lst.end());
}

void ServerStanzaChannel::sendIQ(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<IQ> iq) {
	send(iq);
}

void ServerStanzaChannel::sendMessage(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Message> message) {
	send(message);
}

void ServerStanzaChannel::sendPresence(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Presence> presence) {
	send(presence);
}

void ServerStanzaChannel::handleDataRead(const SafeByteArray &data, const SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> &session) {
	if (safeByteArrayToString(data).find("</stream:stream>") != std::string::npos) {
		Swift::Presence::ref presence = Swift::Presence::create();
		presence->setFrom(session->getRemoteJID());
		presence->setType(Swift::Presence::Unavailable);
		onPresenceReceived(presence);
	}
}
#if HAVE_SWIFTEN_3
void ServerStanzaChannel::finishSession(const JID& to, SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ToplevelElement> element, bool last) {
#else
void ServerStanzaChannel::finishSession(const JID& to, SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Element> element, bool last) {
#endif
	std::vector<SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> > candidateSessions;
	for (std::list<SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> >::const_iterator i = sessions[to.toBare().toString()].begin(); i != sessions[to.toBare().toString()].end(); ++i) {
		candidateSessions.push_back(*i);
	}

	for (std::vector<SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> >::const_iterator i = candidateSessions.begin(); i != candidateSessions.end(); ++i) {
		removeSession(*i);
		if (element) {
			(*i)->sendElement(element);
		}

		if (last && (*i)->getRemoteJID().isValid()) {
			Swift::Presence::ref presence = Swift::Presence::create();
			presence->setFrom((*i)->getRemoteJID());
			presence->setType(Swift::Presence::Unavailable);
			onPresenceReceived(presence);
		}

		(*i)->finishSession();
// 		std::cout << "FINISH SESSION " << sessions[to.toBare().toString()].size() << "\n";
		if (last) {
			break;
		}
	}
}

std::string ServerStanzaChannel::getNewIQID() {
	return idGenerator.generateID();
}

void ServerStanzaChannel::send(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Stanza> stanza) {
	JID to = stanza->getTo();
	assert(to.isValid());

	if (!stanza->getFrom().isValid()) {
		stanza->setFrom(m_jid);
	}

	// For a full JID, first try to route to a session with the full JID
	if (!to.isBare()) {
		std::list<SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> >::const_iterator i = std::find_if(sessions[stanza->getTo().toBare().toString()].begin(), sessions[stanza->getTo().toBare().toString()].end(), HasJID(to));
		if (i != sessions[stanza->getTo().toBare().toString()].end()) {
			(*i)->sendElement(stanza);
			return;
		}
	}

	// Look for candidate sessions
	to = to.toBare();
	std::vector<SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> > candidateSessions;
	for (std::list<SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession> >::const_iterator i = sessions[stanza->getTo().toBare().toString()].begin(); i != sessions[stanza->getTo().toBare().toString()].end(); ++i) {
		if ((*i)->getRemoteJID().equals(to, JID::WithoutResource)) {
			candidateSessions.push_back(*i);
			(*i)->sendElement(stanza);
		}
	}
	if (candidateSessions.empty()) {
		return;
	}

	// Find the session with the highest priority
// 	std::vector<ServerSession*>::const_iterator i = std::max_element(sessions.begin(), sessions.end(), PriorityLessThan());
// 	(*i)->sendStanza(stanza);
	return;
}

void ServerStanzaChannel::handleSessionFinished(const boost::optional<Session::SessionError>&, const SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession>& session) {
	removeSession(session);

// 	if (!session->initiatedFinish()) {
		Swift::Presence::ref presence = Swift::Presence::create();
		presence->setFrom(session->getRemoteJID());
		presence->setType(Swift::Presence::Unavailable);
		onPresenceReceived(presence);
// 	}
}

void ServerStanzaChannel::handleElement(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Element> element, const SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<ServerFromClientSession>& session) {
	SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Stanza> stanza = SWIFTEN_SHRPTR_NAMESPACE::dynamic_pointer_cast<Stanza>(element);
	if (!stanza) {
		return;
	}

	stanza->setFrom(session->getRemoteJID());

	if (!stanza->getFrom().isValid())
		return;
	

	SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Message> message = SWIFTEN_SHRPTR_NAMESPACE::dynamic_pointer_cast<Message>(stanza);
	if (message) {
		onMessageReceived(message);
		return;
	}

	SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Presence> presence = SWIFTEN_SHRPTR_NAMESPACE::dynamic_pointer_cast<Presence>(stanza);
	if (presence) {
		onPresenceReceived(presence);
		return;
	}

	SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<IQ> iq = SWIFTEN_SHRPTR_NAMESPACE::dynamic_pointer_cast<IQ>(stanza);
	if (iq) {
		onIQReceived(iq);
		return;
	}
}

void ServerStanzaChannel::handleSessionInitialized() {
	onAvailableChanged(true);
}

}