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/*
* Copyright (c) 2015-2016 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/Disco/FeatureOracle.h>
#include <algorithm>
#include <iterator>
#include <vector>
#include <Swiften/Base/foreach.h>
#include <Swiften/Disco/EntityCapsProvider.h>
#include <Swiften/Elements/Presence.h>
#include <Swiften/FileTransfer/FileTransferManager.h>
#include <Swiften/JID/JID.h>
#include <Swiften/Presence/PresenceOracle.h>
namespace Swift {
FeatureOracle::FeatureOracle(EntityCapsProvider* capsProvider, PresenceOracle* presenceOracle) : capsProvider_(capsProvider), presenceOracle_(presenceOracle) {
}
Tristate FeatureOracle::isFileTransferSupported(const JID& jid) {
DiscoInfo::ref discoInfo = getDiscoResultForJID(jid);
if (discoInfo) {
return FileTransferManager::isSupportedBy(discoInfo) ? Yes : No;
}
else {
return Maybe;
}
}
Tristate FeatureOracle::isMessageReceiptsSupported(const JID& jid) {
return isFeatureSupported(jid, DiscoInfo::MessageDeliveryReceiptsFeature);
}
Tristate FeatureOracle::isMessageCorrectionSupported(const JID& jid) {
return isFeatureSupported(jid, DiscoInfo::MessageCorrectionFeature);
}
DiscoInfo::ref FeatureOracle::getDiscoResultForJID(const JID& jid) {
DiscoInfo::ref discoInfo;
if (jid.isBare()) {
// Calculate the common subset of disco features of all available results and return that.
std::vector<Presence::ref> availablePresences = presenceOracle_->getAllPresence(jid);
bool commonFeaturesInitialized = false;
std::vector<std::string> commonFeatures;
foreach(Presence::ref presence, availablePresences) {
DiscoInfo::ref presenceDiscoInfo = capsProvider_->getCaps(presence->getFrom());
if (presenceDiscoInfo) {
std::vector<std::string> features = presenceDiscoInfo->getFeatures();
if (!commonFeaturesInitialized) {
commonFeatures = features;
commonFeaturesInitialized = true;
}
else {
std::vector<std::string> featuresToRemove;
foreach(const std::string& feature, commonFeatures) {
if (std::find(features.begin(), features.end(), feature) == features.end()) {
featuresToRemove.push_back(feature);
}
}
foreach(const std::string& featureToRemove, featuresToRemove) {
commonFeatures.erase(std::remove(commonFeatures.begin(), commonFeatures.end(), featureToRemove), commonFeatures.end());
}
}
}
}
discoInfo = std::make_shared<DiscoInfo>();
foreach(const std::string& commonFeature, commonFeatures) {
discoInfo->addFeature(commonFeature);
}
}
else {
// Return the disco result of the full JID.
discoInfo = capsProvider_->getCaps(jid);
}
return discoInfo;
}
Tristate FeatureOracle::isFeatureSupported(const JID& jid, const std::string& feature) {
DiscoInfo::ref discoInfo = getDiscoResultForJID(jid);
if (discoInfo) {
return discoInfo->hasFeature(feature) ? Yes : No;
}
else {
return Maybe;
}
}
}
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Swift