7 files changed, 114 insertions, 42 deletions

diff --git a/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs b/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
index 5552be7..6f044cb 100644
--- a/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
@@ -768,8 +768,15 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                     bool canEditObjectsChanged = ((rights ^ userFlags) & (int)FriendRights.CanModifyObjects) != 0;
                     if (canEditObjectsChanged)
                         friendClient.SendChangeUserRights(userID, friendID, rights);
+
                 }
 
+                // update local cache
+                //m_Friends[friendID].Friends = m_FriendsService.GetFriends(friendID);
+                foreach (FriendInfo finfo in m_Friends[friendID].Friends)
+                    if (finfo.Friend == userID.ToString())
+                        finfo.TheirFlags = rights;
+
                 return true;
             }
 
diff --git a/OpenSim/Region/CoreModules/Framework/InventoryAccess/HGInventoryAccessModule.cs b/OpenSim/Region/CoreModules/Framework/InventoryAccess/HGInventoryAccessModule.cs
index 2ab46aa..58c396c 100644
--- a/OpenSim/Region/CoreModules/Framework/InventoryAccess/HGInventoryAccessModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/InventoryAccess/HGInventoryAccessModule.cs
@@ -131,7 +131,7 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
             return ret;
         }
 
-        public virtual UUID DeleteToInventory(DeRezAction action, UUID folderID,
+        public override UUID DeleteToInventory(DeRezAction action, UUID folderID,
                 SceneObjectGroup objectGroup, IClientAPI remoteClient)
         {
             UUID assetID = base.DeleteToInventory(action, folderID, new List<SceneObjectGroup>() {objectGroup}, remoteClient);
diff --git a/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs b/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
index 3035d88..12b6aa0 100644
--- a/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
@@ -286,23 +286,15 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
                 {
                     // Deleting someone else's item
                     //
-
-
                     if (remoteClient == null ||
                         objectGroup.OwnerID != remoteClient.AgentId)
                     {
-                        // Folder skeleton may not be loaded and we
-                        // have to wait for the inventory to find
-                        // the destination folder
-                        //
+
                         folder = m_Scene.InventoryService.GetFolderForType(userID, AssetType.LostAndFoundFolder);
                     }
                     else
                     {
-                        // Assume inventory skeleton was loaded during login
-                        // and all folders can be found
-                        //
-                        folder = m_Scene.InventoryService.GetFolderForType(userID, AssetType.TrashFolder);
+                         folder = m_Scene.InventoryService.GetFolderForType(userID, AssetType.TrashFolder);
                     }
                 }
                 else if (action == DeRezAction.Return)
@@ -332,7 +324,6 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
 
                 if (folder == null) // None of the above
                 {
-                    //folder = userInfo.RootFolder.FindFolder(folderID);
                     folder = new InventoryFolderBase(folderID);
 
                     if (folder == null) // Nowhere to put it
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsIn/Inventory/InventoryServiceInConnectorModule.cs b/OpenSim/Region/CoreModules/ServiceConnectorsIn/Inventory/InventoryServiceInConnectorModule.cs
index ae03cdf..209cf0d 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsIn/Inventory/InventoryServiceInConnectorModule.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsIn/Inventory/InventoryServiceInConnectorModule.cs
@@ -96,7 +96,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsIn.Inventory
 
                 Object[] args = new Object[] { m_Config, MainServer.Instance, "HGInventoryService" };
 
-                ServerUtils.LoadPlugin<IServiceConnector>("OpenSim.Server.Handlers.dll:HGInventoryServiceInConnector", args);
+                ServerUtils.LoadPlugin<IServiceConnector>("OpenSim.Server.Handlers.dll:XInventoryInConnector", args);
             }
         }
 
diff --git a/OpenSim/Region/CoreModules/World/Archiver/AssetsRequest.cs b/OpenSim/Region/CoreModules/World/Archiver/AssetsRequest.cs
index 4d360f6..a1451ce 100644
--- a/OpenSim/Region/CoreModules/World/Archiver/AssetsRequest.cs
+++ b/OpenSim/Region/CoreModules/World/Archiver/AssetsRequest.cs
@@ -134,8 +134,7 @@ namespace OpenSim.Region.CoreModules.World.Archiver
             
             foreach (KeyValuePair<UUID, AssetType> kvp in m_uuids)
             {
-                if (kvp.Key != UUID.Zero)
-                    m_assetService.Get(kvp.Key.ToString(), kvp.Value, PreAssetRequestCallback);
+                m_assetService.Get(kvp.Key.ToString(), kvp.Value, PreAssetRequestCallback);
             }
 
             m_requestCallbackTimer.Enabled = true;
@@ -270,7 +269,7 @@ namespace OpenSim.Region.CoreModules.World.Archiver
             }
             catch (Exception e)
             {
-                m_log.ErrorFormat("[ARCHIVER]: AssetRequestCallback failed with {0}{1}", e.Message, e.StackTrace);
+                m_log.ErrorFormat("[ARCHIVER]: AssetRequestCallback failed with {0}", e);
             }
         }
 
@@ -286,8 +285,7 @@ namespace OpenSim.Region.CoreModules.World.Archiver
             catch (Exception e)
             {
                 m_log.ErrorFormat(
-                    "[ARCHIVER]: Terminating archive creation since asset requester callback failed with {0}{1}", 
-                    e.Message, e.StackTrace);
+                    "[ARCHIVER]: Terminating archive creation since asset requster callback failed with {0}", e);
             }
         }
     }
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
index 3a8f168..a6067ad 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
@@ -218,7 +218,7 @@ namespace OpenSim.Region.Framework.Scenes
             foreach (IScriptModule e in engines)
             {
                 if (e != null)
-                {
+                {                    
                     ArrayList errors = e.GetScriptErrors(itemID);
                     foreach (Object line in errors)
                         ret.Add(line);
@@ -356,14 +356,26 @@ namespace OpenSim.Region.Framework.Scenes
 
                     m_part.ParentGroup.m_savedScriptState[oldID] = newDoc.OuterXml;
                 }
+                
                 foreach (IScriptModule e in engines)
                 {
                     if (e != null)
                     {
-                        if (e.SetXMLState(newID, m_part.ParentGroup.m_savedScriptState[oldID]))
-                            break;
+                        // Stop an exception in setting saved state from propogating since this is not fatal.
+                        try
+                        {
+                            if (e.SetXMLState(newID, m_part.ParentGroup.m_savedScriptState[oldID]))
+                                break;
+                        }
+                        catch (Exception ex)
+                        {
+                            m_log.WarnFormat(
+                                "[PRIM INVENTORY]: Could not set script state for old key {0}, new key {1} in prim {2} {3}.  Exception {4}{5}", 
+                                oldID, newID, m_part.Name, m_part.UUID, ex.Message, ex.StackTrace);
+                        }                        
                     }
                 }
+                
                 m_part.ParentGroup.m_savedScriptState.Remove(oldID);
             }
         }
@@ -1021,12 +1033,23 @@ namespace OpenSim.Region.Framework.Scenes
                         {
                             if (e != null)
                             {
-                                string n = e.GetXMLState(item.ItemID);
-                                if (n != String.Empty)
+                                // Stop any exception from the script engine from propogating since setting state
+                                // isn't essential.
+                                try
+                                {
+                                    string n = e.GetXMLState(item.ItemID);
+                                    if (n != String.Empty)
+                                    {
+                                        if (!ret.ContainsKey(item.ItemID))
+                                            ret[item.ItemID] = n;
+                                        break;
+                                    }
+                                }
+                                catch (Exception ex)
                                 {
-                                    if (!ret.ContainsKey(item.ItemID))
-                                        ret[item.ItemID] = n;
-                                    break;
+                                    m_log.WarnFormat(
+                                        "[PRIM INVENTORY]: Could not retrieve script state for item {0} {1} in prim {2} {3}.  Exception {4}{5}", 
+                                        item.Name, item.ItemID, m_part.Name, m_part.UUID, ex.Message, ex.StackTrace);
                                 }
                             }
                         }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 1feb153..712bd7d 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -705,22 +705,75 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         {
             //A and B should both be normalized
             m_host.AddScriptLPS(1);
-            double dotProduct = LSL_Vector.Dot(a, b);
-            LSL_Vector crossProduct = LSL_Vector.Cross(a, b);
-            double magProduct = LSL_Vector.Mag(a) * LSL_Vector.Mag(b);
-            double angle = Math.Acos(dotProduct / magProduct);
-            LSL_Vector axis = LSL_Vector.Norm(crossProduct);
-            double s = Math.Sin(angle / 2);
-
-            double x = axis.x * s;
-            double y = axis.y * s;
-            double z = axis.z * s;
-            double w = Math.Cos(angle / 2);
-
-            if (Double.IsNaN(x) || Double.IsNaN(y) || Double.IsNaN(z) || Double.IsNaN(w))
-                return new LSL_Rotation(0.0f, 0.0f, 0.0f, 1.0f);
-
-            return new LSL_Rotation((float)x, (float)y, (float)z, (float)w);
+            LSL_Rotation rotBetween;
+            // Check for zero vectors. If either is zero, return zero rotation. Otherwise,
+            // continue calculation.
+            if (a == new LSL_Vector(0.0f, 0.0f, 0.0f) || b == new LSL_Vector(0.0f, 0.0f, 0.0f))
+            {
+                rotBetween = new LSL_Rotation(0.0f, 0.0f, 0.0f, 1.0f);
+            }
+            else
+            {
+                a = LSL_Vector.Norm(a);
+                b = LSL_Vector.Norm(b);
+                double dotProduct = LSL_Vector.Dot(a, b);
+                // There are two degenerate cases possible. These are for vectors 180 or
+                // 0 degrees apart. These have to be detected and handled individually.
+                //
+                // Check for vectors 180 degrees apart.
+                // A dot product of -1 would mean the angle between vectors is 180 degrees.
+                if (dotProduct < -0.9999999f)
+                {
+                    // First assume X axis is orthogonal to the vectors.
+                    LSL_Vector orthoVector = new LSL_Vector(1.0f, 0.0f, 0.0f);
+                    orthoVector = orthoVector - a * (a.x / LSL_Vector.Dot(a, a));
+                    // Check for near zero vector. A very small non-zero number here will create
+                    // a rotation in an undesired direction.
+                    if (LSL_Vector.Mag(orthoVector) > 0.0001)
+                    {
+                        rotBetween = new LSL_Rotation(orthoVector.x, orthoVector.y, orthoVector.z, 0.0f);
+                    }
+                    // If the magnitude of the vector was near zero, then assume the X axis is not
+                    // orthogonal and use the Z axis instead.
+                    else
+                    {
+                        // Set 180 z rotation.
+                        rotBetween = new LSL_Rotation(0.0f, 0.0f, 1.0f, 0.0f);
+                    }
+                }
+                // Check for parallel vectors.
+                // A dot product of 1 would mean the angle between vectors is 0 degrees.
+                else if (dotProduct > 0.9999999f)
+                {
+                    // Set zero rotation.
+                    rotBetween = new LSL_Rotation(0.0f, 0.0f, 0.0f, 1.0f);
+                }
+                else
+                {
+                    // All special checks have been performed so get the axis of rotation.
+                    LSL_Vector crossProduct = LSL_Vector.Cross(a, b);
+                    // Quarternion s value is the length of the unit vector + dot product.
+                    double qs = 1.0 + dotProduct;
+                    rotBetween = new LSL_Rotation(crossProduct.x, crossProduct.y, crossProduct.z, qs);
+                    // Normalize the rotation.
+                    double mag = LSL_Rotation.Mag(rotBetween);
+                    // We shouldn't have to worry about a divide by zero here. The qs value will be
+                    // non-zero because we already know if we're here, then the dotProduct is not -1 so
+                    // qs will not be zero. Also, we've already handled the input vectors being zero so the
+                    // crossProduct vector should also not be zero.
+                    rotBetween.x = rotBetween.x / mag;
+                    rotBetween.y = rotBetween.y / mag;
+                    rotBetween.z = rotBetween.z / mag;
+                    rotBetween.s = rotBetween.s / mag;
+                    // Check for undefined values and set zero rotation if any found. This code might not actually be required
+                    // any longer since zero vectors are checked for at the top.
+                    if (Double.IsNaN(rotBetween.x) || Double.IsNaN(rotBetween.y) || Double.IsNaN(rotBetween.z) || Double.IsNaN(rotBetween.s))
+                    {
+                        rotBetween = new LSL_Rotation(0.0f, 0.0f, 0.0f, 1.0f);
+                    }
+                }
+            }
+            return rotBetween;
         }
 
         public void llWhisper(int channelID, string text)