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/*
* Copyright (c) 2010-2016 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/Presence/PresenceOracle.h>
#include <queue>
#include <boost/bind.hpp>
#include <Swiften/Client/StanzaChannel.h>
#include <Swiften/Elements/StatusShow.h>
#include <Swiften/Roster/XMPPRoster.h>
namespace Swift {
PresenceOracle::PresenceOracle(StanzaChannel* stanzaChannel, XMPPRoster* roster) : stanzaChannel_(stanzaChannel), xmppRoster_(roster) {
stanzaChannel_->onPresenceReceived.connect(boost::bind(&PresenceOracle::handleIncomingPresence, this, _1));
stanzaChannel_->onAvailableChanged.connect(boost::bind(&PresenceOracle::handleStanzaChannelAvailableChanged, this, _1));
xmppRoster_->onJIDRemoved.connect(boost::bind(&PresenceOracle::handleJIDRemoved, this, _1));
}
PresenceOracle::~PresenceOracle() {
stanzaChannel_->onPresenceReceived.disconnect(boost::bind(&PresenceOracle::handleIncomingPresence, this, _1));
stanzaChannel_->onAvailableChanged.disconnect(boost::bind(&PresenceOracle::handleStanzaChannelAvailableChanged, this, _1));
xmppRoster_->onJIDRemoved.disconnect(boost::bind(&PresenceOracle::handleJIDRemoved, this, _1));
}
void PresenceOracle::handleStanzaChannelAvailableChanged(bool available) {
if (available) {
entries_.clear();
}
}
void PresenceOracle::handleIncomingPresence(Presence::ref presence) {
JID bareJID(presence->getFrom().toBare());
if (presence->getType() == Presence::Subscribe) {
}
else {
Presence::ref passedPresence = presence;
if (presence->getType() == Presence::Unsubscribe) {
/* 3921bis says that we don't follow up with an unavailable, so simulate this ourselves */
passedPresence = Presence::ref(new Presence());
passedPresence->setType(Presence::Unavailable);
passedPresence->setFrom(bareJID);
passedPresence->setStatus(presence->getStatus());
}
PresenceMap jidMap = entries_[bareJID];
if (passedPresence->getFrom().isBare() && presence->getType() == Presence::Unavailable) {
/* Have a bare-JID only presence of offline */
jidMap.clear();
} else if (passedPresence->getType() == Presence::Available) {
/* Don't have a bare-JID only offline presence once there are available presences */
jidMap.erase(bareJID);
}
if (passedPresence->getType() == Presence::Unavailable && jidMap.size() > 1) {
jidMap.erase(passedPresence->getFrom());
} else {
jidMap[passedPresence->getFrom()] = passedPresence;
}
entries_[bareJID] = jidMap;
onPresenceChange(passedPresence);
}
}
void PresenceOracle::handleJIDRemoved(const JID& removedJID) {
/* 3921bis says that we don't follow up with an unavailable, so simulate this ourselves */
Presence::ref unavailablePresence = Presence::ref(new Presence());
unavailablePresence->setType(Presence::Unavailable);
unavailablePresence->setFrom(removedJID);
if (entries_.find(removedJID) != entries_.end()) {
entries_[removedJID].clear();
entries_[removedJID][removedJID] = unavailablePresence;
}
onPresenceChange(unavailablePresence);
}
Presence::ref PresenceOracle::getLastPresence(const JID& jid) const {
PresencesMap::const_iterator i = entries_.find(jid.toBare());
if (i == entries_.end()) {
return Presence::ref();
}
PresenceMap presenceMap = i->second;
PresenceMap::const_iterator j = presenceMap.find(jid);
if (j != presenceMap.end()) {
return j->second;
}
else {
return Presence::ref();
}
}
std::vector<Presence::ref> PresenceOracle::getAllPresence(const JID& bareJID) const {
std::vector<Presence::ref> results;
PresencesMap::const_iterator i = entries_.find(bareJID);
if (i == entries_.end()) {
return results;
}
for (const auto& jidPresence : i->second) {
if (jidPresence.second) {
results.push_back(jidPresence.second);
}
}
return results;
}
struct PresenceAccountCmp {
static int preferenceFromStatusShow(StatusShow::Type showType) {
switch (showType) {
case StatusShow::FFC:
return 5;
case StatusShow::Online:
return 4;
case StatusShow::DND:
return 3;
case StatusShow::Away:
return 2;
case StatusShow::XA:
return 1;
case StatusShow::None:
return 0;
}
assert(false);
return -1;
}
bool operator()(const Presence::ref& a, const Presence::ref& b) {
int aPreference = preferenceFromStatusShow(a->getShow());
int bPreference = preferenceFromStatusShow(b->getShow());
if (aPreference != bPreference) {
return aPreference < bPreference;
}
if (a->getPriority() != b->getPriority()) {
return a->getPriority() < b->getPriority();
}
return a->getFrom().getResource() < b->getFrom().getResource();
}
};
typedef std::priority_queue<Presence::ref, std::vector<Presence::ref>, PresenceAccountCmp> PresenceAccountPriorityQueue;
Presence::ref PresenceOracle::getActivePresence(const std::vector<Presence::ref> presences) {
Presence::ref accountPresence;
PresenceAccountPriorityQueue online;
PresenceAccountPriorityQueue away;
PresenceAccountPriorityQueue offline;
for (auto&& presence : presences) {
switch (presence->getShow()) {
case StatusShow::Online:
online.push(presence);
break;
case StatusShow::Away:
away.push(presence);
break;
case StatusShow::FFC:
online.push(presence);
break;
case StatusShow::XA:
away.push(presence);
break;
case StatusShow::DND:
away.push(presence);
break;
case StatusShow::None:
offline.push(presence);
break;
}
}
if (!online.empty()) {
accountPresence = online.top();
}
else if (!away.empty()) {
accountPresence = away.top();
}
else if (!offline.empty()) {
accountPresence = offline.top();
}
return accountPresence;
}
Presence::ref PresenceOracle::getAccountPresence(const JID& jid) const {
Presence::ref accountPresence;
std::vector<Presence::ref> allPresences = getAllPresence(jid.toBare());
accountPresence = getActivePresence(allPresences);
return accountPresence;
}
Presence::ref PresenceOracle::getHighestPriorityPresence(const JID& bareJID) const {
PresencesMap::const_iterator i = entries_.find(bareJID);
if (i == entries_.end()) {
return Presence::ref();
}
Presence::ref highest;
for (const auto& jidPresence : i->second) {
Presence::ref current = jidPresence.second;
if (!highest
|| current->getPriority() > highest->getPriority()
|| (current->getPriority() == highest->getPriority()
&& StatusShow::typeToAvailabilityOrdering(current->getShow()) > StatusShow::typeToAvailabilityOrdering(highest->getShow()))) {
highest = current;
}
}
return highest;
}
}
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Swift