From b1d43d46bf11eab4295a41450278245544648e66 Mon Sep 17 00:00:00 2001
From: "Justin Clark-Casey (justincc)" <jjustincc@googlemail.com>
Date: Tue, 17 Sep 2013 01:20:55 +0100
Subject: [PATCH] Reinstate insertion of "Unknown UserUMMAU4" now, as naive
 removing may be generating too many repeating user requests from other
 sources.

Leaves in the dropping of the client GUN8 (now 9) uuid binding message, since this was the much more common case from the viewer-side and this can only affect viewers.
---
 .../UserManagement/UserManagementModule.cs    | 66 +++++++++----------
 1 file changed, 31 insertions(+), 35 deletions(-)

diff --git a/OpenSim/Region/CoreModules/Framework/UserManagement/UserManagementModule.cs b/OpenSim/Region/CoreModules/Framework/UserManagement/UserManagementModule.cs
index 80b6ac15bb..bb2bbe3721 100644
--- a/OpenSim/Region/CoreModules/Framework/UserManagement/UserManagementModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/UserManagement/UserManagementModule.cs
@@ -388,10 +388,10 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
                     else
                         m_log.DebugFormat("[USER MANAGEMENT MODULE]: Unable to parse UUI {0}", uInfo.UserID);
                 }
-//                else
-//                {
-//                    m_log.DebugFormat("[USER MANAGEMENT MODULE]: No grid user found for {0}", uuid);
-//                }
+                else
+                {
+                    m_log.DebugFormat("[USER MANAGEMENT MODULE]: No grid user found for {0}", uuid);
+                }
 
                 names[0] = "Unknown";
                 names[1] = "UserUMMTGUN9";
@@ -552,24 +552,24 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
 
             if (oldUser != null)
             {
-//                if (creatorData == null || creatorData == String.Empty)
-//                {
-//                    //ignore updates without creator data
-//                    return;
-//                }
-//
-//                //try update unknown users, but don't update anyone else
-//                if (oldUser.FirstName == "Unknown" && !creatorData.Contains("Unknown")) 
-//                {
-//                    lock (m_UserCache)
-//                        m_UserCache.Remove(id);
-//                    m_log.DebugFormat("[USER MANAGEMENT MODULE]: Re-adding user with id {0}, creatorData [{1}] and old HomeURL {2}", id, creatorData, oldUser.HomeURL);
-//                }
-//                else
-//                {
+                if (creatorData == null || creatorData == String.Empty)
+                {
+                    //ignore updates without creator data
+                    return;
+                }
+
+                //try update unknown users, but don't update anyone else
+                if (oldUser.FirstName == "Unknown" && !creatorData.Contains("Unknown")) 
+                {
+                    lock (m_UserCache)
+                        m_UserCache.Remove(id);
+                    m_log.DebugFormat("[USER MANAGEMENT MODULE]: Re-adding user with id {0}, creatorData [{1}] and old HomeURL {2}", id, creatorData, oldUser.HomeURL);
+                }
+                else
+                {
                     //we have already a valid user within the cache
                     return;
-//                }
+                }
             }
 
             UserAccount account = m_Scenes[0].UserAccountService.GetUserAccount(m_Scenes[0].RegionInfo.ScopeID, id);
@@ -605,22 +605,18 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
 
                     if (parts.Length >= 2)
                         user.FirstName = parts[1].Replace(' ', '.');
-
-                    AddUserInternal(user);
                 }
-
-                // To avoid issues with clients, particularly Hypergrid ones, permanently caching
-                // UUID -> "Unknown User" name bindings, elsewhere we will drop such requests rather than replying.
-                // This also means that we cannot add an unknown user binding to the cache here.
-//                else
-//                {
-//                    // Temporarily add unknown user entries of this type into the cache so that we can distinguish
-//                    // this source from other recent (hopefully resolved) bugs that fail to retrieve a user name binding
-//                    // TODO: Can be removed when GUN* unknown users have definitely dropped significantly or
-//                    // disappeared.
-//                    user.FirstName = "Unknown";
-//                    user.LastName = "UserUMMAU4";
-//                }
+                else
+                {
+                    // Temporarily add unknown user entries of this type into the cache so that we can distinguish
+                    // this source from other recent (hopefully resolved) bugs that fail to retrieve a user name binding
+                    // TODO: Can be removed when GUN* unknown users have definitely dropped significantly or
+                    // disappeared.
+                    user.FirstName = "Unknown";
+                    user.LastName = "UserUMMAU4";
+                }
+                
+                AddUserInternal(user);
             }
         }