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Core/Units: Fixed possible use after free in ThreatManager

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Port From (https://github.com/TrinityCore/TrinityCore/commit/3e3968b63c4192b766de69c8f4744adba406c94b)
This commit is contained in:
hondacrx
2023-09-14 04:28:04 -04:00
parent 6975212812
commit 8c2d3496fb
1 changed files with 13 additions and 7 deletions
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Source/Game/Combat/ThreatManager.cs
+13 -7
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@@ -23,7 +23,7 @@ namespace Game.Combat
uint _updateTimer;
List<ThreatReference> _sortedThreatList = new();
Dictionary<ObjectGuid, ThreatReference> _myThreatListEntries = new();
List<ThreatReference> _needsAIUpdate = new();
List<ObjectGuid> _needsAIUpdate = new();
ThreatReference _currentVictimRef;
ThreatReference _fixateRef;
@@ -497,12 +497,18 @@ namespace Game.Combat
void ProcessAIUpdates()
{
CreatureAI ai = _owner.ToCreature().GetAI();
List<ThreatReference> v = new(_needsAIUpdate); // _needClientUpdate is now empty in case this triggers a recursive call
CreatureAI ai = _owner.ToCreature()?.GetAI();
if (ai == null)
return;
foreach (ThreatReference refe in v)
ai.JustStartedThreateningMe(refe.GetVictim());
List<ObjectGuid> v = new(_needsAIUpdate); // _needClientUpdate is now empty in case this triggers a recursive call
foreach (ObjectGuid guid in v)
{
var refe = _myThreatListEntries.LookupByKey(guid);
if (refe != null)
ai.JustStartedThreateningMe(refe.GetVictim());
}
}
// returns true if a is LOWER on the threat list than b
@@ -794,7 +800,7 @@ namespace Game.Combat
// Resets the specified unit's threat to zero
public void ResetThreat(Unit target) { ScaleThreat(target, 0.0f); }
public void RegisterForAIUpdate(ThreatReference refe) { _needsAIUpdate.Add(refe); }
public void RegisterForAIUpdate(ObjectGuid guid) { _needsAIUpdate.Add(guid); }
}
public enum TauntState
@@ -864,7 +870,7 @@ namespace Game.Combat
{
Online = ShouldBeSuppressed() ? OnlineState.Suppressed : OnlineState.Online;
ListNotifyChanged();
_mgr.RegisterForAIUpdate(this);
_mgr.RegisterForAIUpdate(GetVictim().GetGUID());
}
}