diff --git a/lib/CGameInfoCallback.cpp b/lib/CGameInfoCallback.cpp
index 0145eb209..53a3280b1 100644
--- a/lib/CGameInfoCallback.cpp
+++ b/lib/CGameInfoCallback.cpp
@@ -688,6 +688,61 @@ const CGObjectInstance * CGameInfoCallback::getObjInstance( ObjectInstanceID oid
 	return gs->map->objects[oid.num];
 }
 
+std::vector<ObjectInstanceID> CGameInfoCallback::getTeleportChannelEntraces(TeleportChannelID id, ObjectInstanceID excludeId, PlayerColor Player) const
+{
+	std::vector<ObjectInstanceID> ret;
+	auto channel = gs->map->teleportChannels[id];
+	for(auto entrance : channel->entrances)
+	{
+		auto obj = getObj(entrance);
+		if(obj && (Player == PlayerColor::UNFLAGGABLE || isVisible(obj->pos, Player)))
+			ret.push_back(entrance);
+	}
+
+	return ret;
+}
+
+std::vector<ObjectInstanceID> CGameInfoCallback::getTeleportChannelExits(TeleportChannelID id, ObjectInstanceID excludeId, PlayerColor Player) const
+{
+	std::vector<ObjectInstanceID> ret;
+	auto channel = gs->map->teleportChannels[id];
+	for(auto exit : channel->exits)
+	{
+		auto obj = getObj(exit);
+		if(obj && (Player == PlayerColor::UNFLAGGABLE || isVisible(obj->pos, Player)))
+			ret.push_back(exit);
+	}
+
+	return ret;
+}
+
+ETeleportChannelType::ETeleportChannelType CGameInfoCallback::getTeleportChannelType(TeleportChannelID id, PlayerColor Player) const
+{
+	std::vector<ObjectInstanceID> entrances = getTeleportChannelEntraces(id, ObjectInstanceID(), Player);
+	std::vector<ObjectInstanceID> exits = getTeleportChannelExits(id, ObjectInstanceID(), Player);
+	if((!entrances.size() || !exits.size())
+		|| (entrances.size() == 1 && entrances == exits))
+	{
+		return ETeleportChannelType::IMPASSABLE;
+	}
+
+	auto intersection = vstd::intersection(entrances, exits);
+	if(intersection.size() == entrances.size() && intersection.size() == exits.size())
+		return ETeleportChannelType::BIDIRECTIONAL;
+	else if(!intersection.size())
+		return ETeleportChannelType::UNIDIRECTIONAL;
+	else
+		return ETeleportChannelType::MIXED;
+}
+
+bool CGameInfoCallback::isTeleportEntrancePassable(const CGTeleport * obj, PlayerColor Player) const
+{
+	if(obj && obj->isEntrance() && ETeleportChannelType::IMPASSABLE != getTeleportChannelType(obj->channel, Player))
+		return true;
+	else
+		return false;
+}
+
 void IGameEventRealizer::showInfoDialog( InfoWindow *iw )
 {
 	commitPackage(iw);
diff --git a/lib/CGameInfoCallback.h b/lib/CGameInfoCallback.h
index 1daf4fb50..17383d7b8 100644
--- a/lib/CGameInfoCallback.h
+++ b/lib/CGameInfoCallback.h
@@ -25,6 +25,7 @@ struct InfoAboutTown;
 struct UpgradeInfo;
 struct SThievesGuildInfo;
 class CGDwelling;
+class CGTeleport;
 class CMapHeader;
 struct TeamState;
 struct QuestInfo;
@@ -106,6 +107,12 @@ public:
 	const TeamState *getTeam(TeamID teamID) const;
 	const TeamState *getPlayerTeam(PlayerColor color) const;
 	EBuildingState::EBuildingState canBuildStructure(const CGTownInstance *t, BuildingID ID) const;// 0 - no more than one capitol, 1 - lack of water, 2 - forbidden, 3 - Add another level to Mage Guild, 4 - already built, 5 - cannot build, 6 - cannot afford, 7 - build, 8 - lack of requirements
+
+	//teleport
+	std::vector<ObjectInstanceID> getTeleportChannelEntraces(TeleportChannelID id, ObjectInstanceID excludeId = ObjectInstanceID(), PlayerColor Player = PlayerColor::UNFLAGGABLE) const;
+	std::vector<ObjectInstanceID> getTeleportChannelExits(TeleportChannelID id, ObjectInstanceID excludeId = ObjectInstanceID(), PlayerColor Player = PlayerColor::UNFLAGGABLE) const;
+	ETeleportChannelType::ETeleportChannelType getTeleportChannelType(TeleportChannelID id, PlayerColor Player = PlayerColor::UNFLAGGABLE) const;
+	bool isTeleportEntrancePassable(const CGTeleport * obj, PlayerColor Player) const;
 };
 
 class DLL_LINKAGE CPlayerSpecificInfoCallback : public CGameInfoCallback