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Fix an npc delete race condition with LSL sensors where an initial presence check could succeed but then the npc removed before the subequent npc check.

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The resulting null would cause an exception.  We now check for null before looking at SenseAsAgent.
Hopefully fixes http://opensimulator.org/mantis/view.php?id=5872
This commit is contained in:
Justin Clark-Casey (justincc)
2012-02-10 21:26:05 +00:00
parent 44d84bc277
commit b3d152f3ba
1 changed files with 20 additions and 9 deletions
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29
OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs
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@@ -445,17 +445,28 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
Vector3 toRegionPos;
double dis;
Action<ScenePresence> senseEntity = new Action<ScenePresence>(delegate(ScenePresence presence)
Action<ScenePresence> senseEntity = new Action<ScenePresence>(presence =>
{
if ((ts.type & NPC) == 0
&& presence.PresenceType == PresenceType.Npc
&& !npcModule.GetNPC(presence.UUID, presence.Scene).SenseAsAgent)
return;
if ((ts.type & NPC) == 0 && presence.PresenceType == PresenceType.Npc)
{
INPC npcData = npcModule.GetNPC(presence.UUID, presence.Scene);
if (npcData == null || !npcData.SenseAsAgent)
return;
}
if ((ts.type & AGENT) == 0
&& (presence.PresenceType == PresenceType.User
|| npcModule.GetNPC(presence.UUID, presence.Scene).SenseAsAgent))
return;
if ((ts.type & AGENT) == 0)
{
if (presence.PresenceType == PresenceType.User)
{
return;
}
else
{
INPC npcData = npcModule.GetNPC(presence.UUID, presence.Scene);
if (npcData != null && npcData.SenseAsAgent)
return;
}
}
if (presence.IsDeleted || presence.IsChildAgent || presence.GodLevel > 0.0)
return;