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simplified the code to remove old locations and fixed bug that in some situation would let a PGP key with no locations

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This commit is contained in:
csoler 2016-10-04 21:24:53 +02:00
parent a35985e3fc
commit 133676fdee
1 changed files with 27 additions and 100 deletions
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125
libretroshare/src/pqi/p3peermgr.cc
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@ -286,7 +286,7 @@ bool p3PeerMgrIMPL::setOwnVisState(uint16_t vs_disc, uint16_t vs_dht)
void p3PeerMgrIMPL::tick()
{
static const time_t INTERVAL_BETWEEN_LOCATION_CLEANING = 300 ; // Remove unused locations and clean IPs every 10 minutes.
static const time_t INTERVAL_BETWEEN_LOCATION_CLEANING = 100 ; // Remove unused locations and clean IPs every 10 minutes.
static time_t last_friends_check = time(NULL) ; // first cleaning after 1 hour.
@ -2841,121 +2841,48 @@ bool p3PeerMgrIMPL::removeBannedIps()
bool p3PeerMgrIMPL::removeUnusedLocations()
{
std::list<RsPeerId> toRemove;
std::map<RsPgpId, bool> hasRecentLocation;
std::map<RsPgpId, time_t> mostRecentTime;
std::map<RsPgpId, RsPeerId> mostRecentLocation;
// init maps
{
std::list<RsPgpId> pgpList;
if(!rsPeers->getGPGAcceptedList(pgpList))
return false;
std::list<RsPgpId>::iterator it;
for(it = pgpList.begin(); it != pgpList.end(); ++it)
{
hasRecentLocation[*it] = false;
mostRecentTime[*it] = (time_t)0;
}
}
const time_t now = time(NULL);
RsPgpId pgpID;
std::list<RsPgpId> pgpList;
if(!rsPeers->getGPGAcceptedList(pgpList))
return false;
{
RsStackMutex stack(mPeerMtx); /****** STACK LOCK MUTEX *******/
// First put a sensible number in all PGP ids
for(std::list<RsPgpId>::const_iterator it = pgpList.begin(); it != pgpList.end(); ++it)
mostRecentTime[*it] = (time_t)0;
#ifdef PEER_DEBUG
std::cerr << "p3PeerMgr::removeUnusedLocations()" << std::endl;
#endif
// Then compute the most recently used location for all PGP ids
std::map<RsPeerId, peerState>::iterator it;
for(it = mFriendList.begin(); it != mFriendList.end(); ++it)
{
pgpID = it->second.gpg_id;
for( std::map<RsPeerId, peerState>::iterator it = mFriendList.begin(); it != mFriendList.end(); ++it)
{
time_t& bst(mostRecentTime[it->second.gpg_id]) ;
bst = std::max(bst,it->second.lastcontact) ;
}
// store some references to speed up accessing
RsPeerId &idRef = mostRecentLocation[pgpID];
bool &recentRef = hasRecentLocation[pgpID];
// And remove all locations that are too old and also older than the most recent location. Doing this we're sure to always keep at least one location per PGP id.
if (now > it->second.lastcontact + RS_PEER_OFFLINE_DELETE)
{
// location is too old
if(recentRef)
{
// there is already one location that won't get removed
// -> we can safely remove this one
toRemove.push_back(it->first);
for( std::map<RsPeerId, peerState>::iterator it = mFriendList.begin(); it != mFriendList.end(); ++it)
{
if (now > it->second.lastcontact + RS_PEER_OFFLINE_DELETE && it->second.lastcontact < mostRecentTime[it->second.gpg_id])
toRemove.push_back(it->first);
#ifdef PEER_DEBUG
std::cerr << "p3PeerMgr::removeUnusedLocations() removing Old SSL Id: " << it->first << std::endl;
std::cerr << "Location " << it->first << " PGP id " << it->second.gpg_id << " last contact " << it->second.lastcontact << " remove: " << (now > it->second.lastcontact + RS_PEER_OFFLINE_DELETE) << " most recent: " << mostRecentTime[it->second.gpg_id]
<< ". Final result remove: " << (it->second.lastcontact < mostRecentTime[it->second.gpg_id] && now > it->second.lastcontact + RS_PEER_OFFLINE_DELETE )<< std::endl;
#endif
}
else
{
// we need to take care that the most recent location it not removed
time_t &timeRef = mostRecentTime[pgpID];
if(timeRef > it->second.lastcontact)
{
// this (it) location is longer offline compared to mostRecentLocation
// -> we can remove this one
toRemove.push_back(it->first);
#ifdef PEER_DEBUG
std::cerr << "p3PeerMgr::removeUnusedLocations() removing Old SSL Id: " << it->first << std::endl;
#endif
}
else
{
// this (it) location is more recent compared to mostRecentLocation
// -> we can remove mostRecentLocation
if(!idRef.isNull())
{
toRemove.push_back(idRef);
#ifdef PEER_DEBUG
std::cerr << "p3PeerMgr::removeUnusedLocations() removing Old SSL Id: " << it->first << std::endl;
#endif
}
// update maps
idRef = it->first;
timeRef = it->second.lastcontact;
}
}
}
else
{
// found a location that won't get removed
recentRef = true;
// we can remove mostRecentLocation if it is set
if(!idRef.isNull())
{
toRemove.push_back(idRef);
#ifdef PEER_DEBUG
std::cerr << "p3PeerMgr::removeUnusedLocations() removing Old SSL Id: " << it->first << std::endl;
#endif
}
}
// if (isDummyFriend(it->first))
// {
// toRemove.push_back(it->first);
//
//#ifdef PEER_DEBUG
// std::cerr << "p3PeerMgr::removeUnusedLocations() removing Dummy Id: " << it->first << std::endl;
//#endif
//
// }
}
}
}
std::list<RsPeerId>::iterator it;
for(it = toRemove.begin(); it != toRemove.end(); ++it)
{
removeFriend(*it, false);
}
for( std::list<RsPeerId>::iterator it = toRemove.begin(); it != toRemove.end(); ++it)
removeFriend(*it, false);
return true;
}