From 1b65020b414bca9120fe87998769b5e138c435cd Mon Sep 17 00:00:00 2001
From: MW <Michaelwri22@yahoo.co.uk>
Date: Thu, 19 Feb 2009 11:54:53 +0000
Subject: [PATCH] Added a event to IMessageTransferModule (and
 MessageTransferModule) so that other modules can capture IM messages and do
 custom handling of them. As just attaching to Client IM events doesn't really
 support this, as they would still get routed through the normal process and
 could give back errors.

---
 .../Avatar/InstantMessage/MessageTransferModule.cs | 14 ++++++++++++++
 .../Framework/Interfaces/IMessageTransferModule.cs |  3 +++
 2 files changed, 17 insertions(+)

diff --git a/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs b/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
index 38d2d21b42..b8e0c295d2 100644
--- a/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
@@ -48,6 +48,10 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
         private List<Scene> m_Scenes = new List<Scene>();
         private Dictionary<UUID, ulong> m_UserRegionMap = new Dictionary<UUID, ulong>();
 
+        public event ExternalHandleIM OnExternalIMCapture;
+
+        private ExternalHandleIM handlerExternalIMCapture;
+
         public void Initialise(Scene scene, IConfigSource config)
         {
             IConfig cnf = config.Configs["Messaging"];
@@ -95,6 +99,16 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
 
         public void SendInstantMessage(GridInstantMessage im, MessageResultNotification result)
         {
+            handlerExternalIMCapture = OnExternalIMCapture;
+            if (handlerExternalIMCapture != null)
+            {
+                if (handlerExternalIMCapture(im))
+                {
+                    result(true);
+                    return;
+                }
+            }
+
             UUID toAgentID = new UUID(im.toAgentID);
 
             m_log.DebugFormat("[INSTANT MESSAGE]: Attempting delivery of IM from {0} to {1}", im.fromAgentName, toAgentID.ToString());
diff --git a/OpenSim/Region/Framework/Interfaces/IMessageTransferModule.cs b/OpenSim/Region/Framework/Interfaces/IMessageTransferModule.cs
index ffae307809..bc194b92ac 100644
--- a/OpenSim/Region/Framework/Interfaces/IMessageTransferModule.cs
+++ b/OpenSim/Region/Framework/Interfaces/IMessageTransferModule.cs
@@ -30,9 +30,12 @@ using OpenSim.Framework;
 namespace OpenSim.Region.Framework.Interfaces
 {
     public delegate void MessageResultNotification(bool success);
+    public delegate bool ExternalHandleIM(GridInstantMessage im);
 
     public interface IMessageTransferModule
     {
+        event ExternalHandleIM OnExternalIMCapture;
+
         void SendInstantMessage(GridInstantMessage im, MessageResultNotification result);
     }
 }