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/*
* Copyright (c) 2010-2016 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/Disco/CapsManager.h>
#include <iostream>
#include <boost/bind.hpp>
#include <Swiften/Client/StanzaChannel.h>
#include <Swiften/Disco/CapsInfoGenerator.h>
#include <Swiften/Disco/CapsStorage.h>
#include <Swiften/Disco/GetDiscoInfoRequest.h>
#include <Swiften/Elements/CapsInfo.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(std::shared_ptr<Presence> presence) {
std::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);
}
}
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Swift