6 files changed, 71 insertions, 11 deletions

diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
index 1da9d5e..5a2c45c 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
@@ -1612,14 +1612,19 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     currentPacket.ItemData[itemsSent % MAX_ITEMS_PER_PACKET] = CreateItemDataBlock(items[itemsSent++]);
                 else
                 {
+//                    m_log.DebugFormat(
+//                        "[LLCLIENTVIEW]: Sending inventory folder details packet to {0} for folder {1}", Name, folderID);
                     OutPacket(currentPacket, ThrottleOutPacketType.Asset, false);
                     currentPacket = null;
                 }
-
             }
 
             if (currentPacket != null)
+            {
+//                m_log.DebugFormat(
+//                    "[LLCLIENTVIEW]: Sending inventory folder details packet to {0} for folder {1}", Name, folderID);
                 OutPacket(currentPacket, ThrottleOutPacketType.Asset, false);
+            }
         }
 
         private InventoryDescendentsPacket.FolderDataBlock CreateFolderDataBlock(InventoryFolderBase folder)
diff --git a/OpenSim/Region/CoreModules/Avatar/InstantMessage/OfflineMessageModule.cs b/OpenSim/Region/CoreModules/Avatar/InstantMessage/OfflineMessageModule.cs
index 919ea33..321b38b 100644
--- a/OpenSim/Region/CoreModules/Avatar/InstantMessage/OfflineMessageModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/InstantMessage/OfflineMessageModule.cs
@@ -178,6 +178,9 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
                 List<GridInstantMessage> msglist = SynchronousRestObjectPoster.BeginPostObject<UUID, List<GridInstantMessage>>(
                         "POST", m_RestURL + "/RetrieveMessages/", client.AgentId);
 
+                if (msglist == null)
+                    m_log.WarnFormat("[OFFLINE MESSAGING]: WARNING null message list.");
+
                 foreach (GridInstantMessage im in msglist)
                 {
                     // client.SendInstantMessage(im);
diff --git a/OpenSim/Region/CoreModules/Hypergrid/HGWorldMapModule.cs b/OpenSim/Region/CoreModules/Hypergrid/HGWorldMapModule.cs
index a0ccdc7..5ab334f 100644
--- a/OpenSim/Region/CoreModules/Hypergrid/HGWorldMapModule.cs
+++ b/OpenSim/Region/CoreModules/Hypergrid/HGWorldMapModule.cs
@@ -62,8 +62,8 @@ namespace OpenSim.Region.CoreModules.Hypergrid
         {
             List<MapBlockData> mapBlocks = new List<MapBlockData>();
             List<GridRegion> regions = m_scene.GridService.GetRegionRange(m_scene.RegionInfo.ScopeID,
-                (minX - 4) * (int)Constants.RegionSize, (maxX + 4) * (int)Constants.RegionSize, 
-                (minY - 4) * (int)Constants.RegionSize, (maxY + 4) * (int)Constants.RegionSize);
+                minX * (int)Constants.RegionSize, maxX * (int)Constants.RegionSize, 
+                minY * (int)Constants.RegionSize, maxY * (int)Constants.RegionSize);
 
             foreach (GridRegion r in regions)
             {
@@ -76,7 +76,7 @@ namespace OpenSim.Region.CoreModules.Hypergrid
             FillInMap(mapBlocks, minX, minY, maxX, maxY);
             //
 
-            remoteClient.SendMapBlock(mapBlocks, flag);
+            remoteClient.SendMapBlock(mapBlocks, 0);
         }
 
 
@@ -93,7 +93,7 @@ namespace OpenSim.Region.CoreModules.Hypergrid
                         mblock.X = (ushort)x;
                         mblock.Y = (ushort)y;
                         mblock.Name = "";
-                        mblock.Access = 254; // not here???
+                        mblock.Access = 254; // means 'simulator is offline'. We need this because the viewer ignores 255's
                         mblock.MapImageId = UUID.Zero;
                         mapBlocks.Add(mblock);
                     }
diff --git a/OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs b/OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs
index 8073f2d..0cacf2d 100644
--- a/OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs
+++ b/OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs
@@ -820,7 +820,7 @@ namespace OpenSim.Region.CoreModules.World.WorldMap
                     MapBlockData block = new MapBlockData();
                     block.X = (ushort)minX;
                     block.Y = (ushort)minY;
-                    block.Access = 254; // == not there
+                    block.Access = 254; // means 'simulator is offline'
                     response.Add(block);
                 }
                 remoteClient.SendMapBlock(response, 0);
@@ -846,7 +846,7 @@ namespace OpenSim.Region.CoreModules.World.WorldMap
                 MapBlockFromGridRegion(block, r);
                 mapBlocks.Add(block);
             }
-            remoteClient.SendMapBlock(mapBlocks, flag);
+            remoteClient.SendMapBlock(mapBlocks, 0);
         }
 
         protected void MapBlockFromGridRegion(MapBlockData block, GridRegion r)
diff --git a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
index cd01a05..3bf2c2b 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
@@ -904,11 +904,29 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
+        /// <summary>
+        /// Link an inventory item to an existing item.
+        /// </summary>
+        /// <remarks>
+        /// The linkee item id is placed in the asset id slot.  This appears to be what the viewer expects when
+        /// it receives inventory information.
+        /// </remarks>
+        /// <param name="remoteClient"></param>
+        /// <param name="transActionID"></param>
+        /// <param name="folderID"></param>
+        /// <param name="callbackID"></param>
+        /// <param name="description"></param>
+        /// <param name="name"></param>
+        /// <param name="invType"></param>
+        /// <param name="type">/param>
+        /// <param name="olditemID"></param>
         private void HandleLinkInventoryItem(IClientAPI remoteClient, UUID transActionID, UUID folderID,
                                              uint callbackID, string description, string name,
                                              sbyte invType, sbyte type, UUID olditemID)
         {
-            m_log.DebugFormat("[AGENT INVENTORY]: Received request to create inventory item link {0} in folder {1} pointing to {2}", name, folderID, olditemID);
+            m_log.DebugFormat(
+                "[AGENT INVENTORY]: Received request from {0} to create inventory item link {1} in folder {2} pointing to {3}",
+                remoteClient.Name, name, folderID, olditemID);
 
             if (!Permissions.CanCreateUserInventory(invType, remoteClient.AgentId))
                 return;
@@ -916,7 +934,20 @@ namespace OpenSim.Region.Framework.Scenes
             ScenePresence presence;
             if (TryGetScenePresence(remoteClient.AgentId, out presence))
             {
-//                byte[] data = null;
+                bool linkAlreadyExists = false;
+                List<InventoryItemBase> existingItems = InventoryService.GetFolderItems(remoteClient.AgentId, folderID);
+                foreach (InventoryItemBase item in existingItems)
+                    if (item.AssetID == olditemID)
+                        linkAlreadyExists = true;
+
+                if (linkAlreadyExists)
+                {
+                    m_log.WarnFormat(
+                        "[AGENT INVENTORY]: Ignoring request from {0} to create item link {1} in folder {2} pointing to {3} since a link already exists",
+                        remoteClient.Name, name, folderID, olditemID);
+
+                    return;
+                }
 
                 AssetBase asset = new AssetBase();
                 asset.FullID = olditemID;
@@ -1351,11 +1382,28 @@ namespace OpenSim.Region.Framework.Scenes
             InventoryFolderBase containingFolder = new InventoryFolderBase(folder.ID, client.AgentId);
             containingFolder = InventoryService.GetFolder(containingFolder);
 
-            //m_log.DebugFormat("[AGENT INVENTORY]: Sending inventory folder contents ({0} nodes) for \"{1}\" to {2} {3}",
-            //    contents.Folders.Count + contents.Items.Count, containingFolder.Name, client.FirstName, client.LastName);
+//            m_log.DebugFormat("[AGENT INVENTORY]: Sending inventory folder contents ({0} nodes) for \"{1}\" to {2} {3}",
+//                contents.Folders.Count + contents.Items.Count, containingFolder.Name, client.FirstName, client.LastName);
 
             if (containingFolder != null && containingFolder != null)
+            {
+                // If the folder requested contains links, then we need to send those folders first, otherwise the links
+                // will be broken in the viewer.
+                HashSet<UUID> linkedItemFolderIdsToSend = new HashSet<UUID>();
+                foreach (InventoryItemBase item in contents.Items)
+                {
+                    if (item.AssetType == (int)AssetType.Link)
+                    {
+                        InventoryItemBase linkedItem = InventoryService.GetItem(new InventoryItemBase(item.AssetID));
+                        linkedItemFolderIdsToSend.Add(linkedItem.Folder);
+                    }
+                }
+
+                foreach (UUID linkedItemFolderId in linkedItemFolderIdsToSend)
+                    SendInventoryUpdate(client, new InventoryFolderBase(linkedItemFolderId), false, true);
+
                 client.SendInventoryFolderDetails(client.AgentId, folder.ID, contents.Items, contents.Folders, containingFolder.Version, fetchFolders, fetchItems);
+            }
         }
 
         /// <summary>
diff --git a/OpenSim/Region/Framework/Scenes/Scene.PacketHandlers.cs b/OpenSim/Region/Framework/Scenes/Scene.PacketHandlers.cs
index ab567fb..e2d7208 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.PacketHandlers.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.PacketHandlers.cs
@@ -499,6 +499,10 @@ namespace OpenSim.Region.Framework.Scenes
         public void HandleFetchInventoryDescendents(IClientAPI remoteClient, UUID folderID, UUID ownerID,
                                                     bool fetchFolders, bool fetchItems, int sortOrder)
         {
+//            m_log.DebugFormat(
+//                "[USER INVENTORY]: HandleFetchInventoryDescendents() for {0}, folder={1}, fetchFolders={2}, fetchItems={3}, sortOrder={4}",
+//                remoteClient.Name, folderID, fetchFolders, fetchItems, sortOrder);
+
             if (folderID == UUID.Zero)
                 return;