Don't serve texture preview from other people's objects if you

havenever seen that texture before.

OpenSim/Data/MySQL/MySQLRegionData.cs

@@ -141,6 +141,14 @@ namespace OpenSim.Data.MySQL
             Migration m = new Migration(m_connection, assem, "RegionStore");
             m.Update();
 
+            PrepareConnection();
+        }
+
+        public void Dispose() {}
+
+        private void PrepareConnection()
+        {
+            GetWaitTimeout();
 
             MySqlCommand primSelectCmd = new MySqlCommand(m_primSelect, m_connection);
             m_primDataAdapter = new MySqlDataAdapter(primSelectCmd);
@@ -203,8 +211,6 @@ namespace OpenSim.Data.MySQL
             }
         }
 
-        public void Dispose() {}
-
         /// <summary>
         /// Get the wait_timeout value for our connection
         /// </summary>
@@ -254,6 +260,8 @@ namespace OpenSim.Data.MySQL
                     m_connection.Close();
                     m_connection = new MySqlConnection(m_connectionString);
                     m_connection.Open();
+
+                    PrepareConnection();
                 }
             }
 
@@ -307,6 +315,13 @@ namespace OpenSim.Data.MySQL
         /// <param name="obj">The object</param>
         /// <param name="regionUUID">The region UUID</param>
         public void StoreObject(SceneObjectGroup obj, UUID regionUUID)
+        {
+            int tries = 3;
+            while (tries > 0)
+            {
+                tries--;
+
+                try
                 {
                     lock (m_dataSet)
                     {
@@ -324,6 +339,17 @@ namespace OpenSim.Data.MySQL
                             }
                         }
                         Commit();
+                        return;
+                    }
+                }
+                catch(MySqlException)
+                {
+                    m_connection.Close();
+                    m_connection = new MySqlConnection(m_connectionString);
+                    m_connection.Open();
+
+                    PrepareConnection();
+                }
             }
         }
 

OpenSim/Framework/Communications/Cache/InventoryFolderImpl.cs

@@ -138,6 +138,33 @@ namespace OpenSim.Framework.Communications.Cache
             return null;
         }
 
+        public InventoryItemBase FindAsset(UUID assetID)
+        {
+            lock (Items)
+            {
+                foreach (InventoryItemBase item in Items.Values)
+                {
+                    if (item.AssetID == assetID)
+                        return item;
+                }
+            }
+
+            lock (SubFolders)
+            {
+                foreach (InventoryFolderImpl folder in SubFolders.Values)
+                {
+                    InventoryItemBase item = folder.FindAsset(assetID);
+
+                    if (item != null)
+                    {
+                        return item;
+                    }
+                }
+            }
+
+            return null;
+        }
+
         /// <summary>
         /// Deletes an item if it exists in this folder or any children
         /// </summary>

OpenSim/Region/Environment/Modules/Agent/TextureDownload/TextureDownloadModule.cs

@@ -33,6 +33,7 @@ using Nini.Config;
 using OpenSim.Framework;
 using OpenSim.Region.Environment.Interfaces;
 using OpenSim.Region.Environment.Scenes;
+using OpenSim.Framework.Communications.Cache;
 using BlockingQueue = OpenSim.Framework.BlockingQueue<OpenSim.Region.Environment.Interfaces.ITextureSender>;
 
 namespace OpenSim.Region.Environment.Modules.Agent.TextureDownload
@@ -161,6 +162,27 @@ namespace OpenSim.Region.Environment.Modules.Agent.TextureDownload
         public void TextureRequest(Object sender, TextureRequestArgs e)
         {
             IClientAPI client = (IClientAPI) sender;
+
+            if (e.Priority == 1016001f) // Preview
+            {
+                if (client.Scene is Scene)
+                {
+                    Scene scene = (Scene)client.Scene;
+                    
+                    CachedUserInfo profile = scene.CommsManager.UserProfileCacheService.GetUserDetails(client.AgentId);
+                    if (profile == null) // Deny unknown user
+                        return;
+
+                    if (profile.RootFolder == null) // Deny no inventory
+                        return;
+
+                    if (profile.UserProfile.GodLevel < 200 && profile.RootFolder.FindAsset(e.RequestedAssetID) == null) // Deny if not owned
+                        return;
+
+                    m_log.Debug("Texture preview");
+                }
+            }
+
             UserTextureDownloadService textureService;
 
             if (TryGetUserTextureService(client, out textureService))