/* * Copyright (c) 2010-2013 Isode Limited. * All rights reserved. * See the COPYING file for more information. */ #include <Swiften/Disco/CapsManager.h> #include <boost/bind.hpp> #include <iostream> #include <Swiften/Client/StanzaChannel.h> #include <Swiften/Disco/CapsStorage.h> #include <Swiften/Disco/CapsInfoGenerator.h> #include <Swiften/Elements/CapsInfo.h> #include <Swiften/Disco/GetDiscoInfoRequest.h> namespace Swift { CapsManager::CapsManager(CapsStorage* capsStorage, StanzaChannel* stanzaChannel, IQRouter* iqRouter, CryptoProvider* crypto) : iqRouter(iqRouter), crypto(crypto), capsStorage(capsStorage), warnOnInvalidHash(true) { stanzaChannel->onPresenceReceived.connect(boost::bind(&CapsManager::handlePresenceReceived, this, _1)); stanzaChannel->onAvailableChanged.connect(boost::bind(&CapsManager::handleStanzaChannelAvailableChanged, this, _1)); } void CapsManager::handlePresenceReceived(boost::shared_ptr<Presence> presence) { boost::shared_ptr<CapsInfo> capsInfo = presence->getPayload<CapsInfo>(); if (!capsInfo || capsInfo->getHash() != "sha-1" || presence->getPayload<ErrorPayload>()) { return; } std::string hash = capsInfo->getVersion(); if (capsStorage->getDiscoInfo(hash)) { return; } if (failingCaps.find(std::make_pair(presence->getFrom(), hash)) != failingCaps.end()) { return; } if (requestedDiscoInfos.find(hash) != requestedDiscoInfos.end()) { fallbacks[hash].insert(std::make_pair(presence->getFrom(), capsInfo->getNode())); return; } requestDiscoInfo(presence->getFrom(), capsInfo->getNode(), hash); } void CapsManager::handleStanzaChannelAvailableChanged(bool available) { if (available) { failingCaps.clear(); fallbacks.clear(); requestedDiscoInfos.clear(); } } void CapsManager::handleDiscoInfoReceived(const JID& from, const std::string& hash, DiscoInfo::ref discoInfo, ErrorPayload::ref error) { requestedDiscoInfos.erase(hash); if (error || !discoInfo || CapsInfoGenerator("", crypto).generateCapsInfo(*discoInfo.get()).getVersion() != hash) { if (warnOnInvalidHash && !error && discoInfo) { std::cerr << "Warning: Caps from " << from.toString() << " do not verify" << std::endl; } failingCaps.insert(std::make_pair(from, hash)); std::map<std::string, std::set< std::pair<JID, std::string> > >::iterator i = fallbacks.find(hash); if (i != fallbacks.end() && !i->second.empty()) { std::pair<JID,std::string> fallbackAndNode = *i->second.begin(); i->second.erase(i->second.begin()); requestDiscoInfo(fallbackAndNode.first, fallbackAndNode.second, hash); } return; } fallbacks.erase(hash); capsStorage->setDiscoInfo(hash, discoInfo); onCapsAvailable(hash); } void CapsManager::requestDiscoInfo(const JID& jid, const std::string& node, const std::string& hash) { GetDiscoInfoRequest::ref request = GetDiscoInfoRequest::create(jid, node + "#" + hash, iqRouter); request->onResponse.connect(boost::bind(&CapsManager::handleDiscoInfoReceived, this, jid, hash, _1, _2)); requestedDiscoInfos.insert(hash); request->send(); } DiscoInfo::ref CapsManager::getCaps(const std::string& hash) const { return capsStorage->getDiscoInfo(hash); } }