Reapplying a revised version of Christopher Yeoh's (IBM) patch for allow

inventory drop. Also adds a new flags, "propagate_permissions" to
OpenSim.ini to control that feature.

4 files changed, 60 insertions, 20 deletions

diff --git a/OpenSim/Region/Environment/Modules/World/Permissions/PermissionsModule.cs b/OpenSim/Region/Environment/Modules/World/Permissions/PermissionsModule.cs
index 28e9850..7f567e5 100644
--- a/OpenSim/Region/Environment/Modules/World/Permissions/PermissionsModule.cs
+++ b/OpenSim/Region/Environment/Modules/World/Permissions/PermissionsModule.cs
@@ -64,6 +64,7 @@ namespace OpenSim.Region.Environment.Modules.World.Permissions
         // Bypasses the permissions engine
         private bool m_bypassPermissions = true;
         private bool m_bypassPermissionsValue = true;
+        private bool m_propagatePermissions = false;
         private bool m_debugPermissions = false;
         private bool m_allowGridGods = false;
         private bool m_RegionOwnerIsGod = false;
@@ -143,6 +144,7 @@ namespace OpenSim.Region.Environment.Modules.World.Permissions
 
             m_allowGridGods = myConfig.GetBoolean("allow_grid_gods", false);
             m_bypassPermissions = !myConfig.GetBoolean("serverside_object_permissions", true);
+            m_propagatePermissions = myConfig.GetBoolean("propagate_permissions", true);
             m_RegionOwnerIsGod = myConfig.GetBoolean("region_owner_is_god", true);
             m_ParcelOwnerIsGod = myConfig.GetBoolean("parcel_owner_is_god", true);
 
@@ -278,7 +280,10 @@ namespace OpenSim.Region.Environment.Modules.World.Permissions
 
         public bool PropagatePermissions()
         {
-            return false;
+            if (m_bypassPermissions)
+                return false;
+
+            return m_propagatePermissions;
         }
 
         public bool BypassPermissions()
diff --git a/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs b/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
index 687a225..2c0c872 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
@@ -1179,7 +1179,7 @@ namespace OpenSim.Region.Environment.Scenes
             destTaskItem.InvType = srcTaskItem.InvType;
             destTaskItem.Type = srcTaskItem.Type;
 
-            destPart.AddInventoryItem(destTaskItem);
+            destPart.AddInventoryItem(destTaskItem, part.OwnerID != destPart.OwnerID);
 
             if ((srcTaskItem.CurrentPermissions & (uint)PermissionMask.Copy) == 0)
                 part.RemoveInventoryItem(itemId);
@@ -1249,10 +1249,17 @@ namespace OpenSim.Region.Environment.Scenes
 
             if (part != null)
             {
-                if (!ExternalChecks.ExternalChecksCanEditObjectInventory(part.UUID, remoteClient.AgentId))
-                    return;
-
                 TaskInventoryItem currentItem = part.GetInventoryItem(itemID);
+                bool allowInventoryDrop = (part.GetEffectiveObjectFlags()
+                                           & (uint)PrimFlags.AllowInventoryDrop) != 0;
+
+                // Explicity allow anyone to add to the inventory if the
+                // AllowInventoryDrop flag has been set. Don't however let
+                // them update an item unless they pass the external checks
+                //
+                if (!ExternalChecks.ExternalChecksCanEditObjectInventory(part.UUID, remoteClient.AgentId)
+                        && (currentItem != null || !allowInventoryDrop ))
+                    return;
 
                 if (currentItem == null)
                 {
@@ -1417,7 +1424,7 @@ namespace OpenSim.Region.Environment.Scenes
                 taskItem.PermsMask = 0;
                 taskItem.AssetID = asset.FullID;
 
-                part.AddInventoryItem(taskItem);
+                part.AddInventoryItem(taskItem, false);
                 part.GetProperties(remoteClient);
 
                 part.CreateScriptInstance(taskItem, 0, false, DefaultScriptEngine, 0);
@@ -1512,7 +1519,7 @@ namespace OpenSim.Region.Environment.Scenes
             destTaskItem.InvType = srcTaskItem.InvType;
             destTaskItem.Type = srcTaskItem.Type;
 
-            destPart.AddInventoryItemExclusive(destTaskItem);
+            destPart.AddInventoryItemExclusive(destTaskItem, false);
 
             if (running > 0)
             {
diff --git a/OpenSim/Region/Environment/Scenes/SceneObjectGroup.Inventory.cs b/OpenSim/Region/Environment/Scenes/SceneObjectGroup.Inventory.cs
index bfa9763..2b560f4 100644
--- a/OpenSim/Region/Environment/Scenes/SceneObjectGroup.Inventory.cs
+++ b/OpenSim/Region/Environment/Scenes/SceneObjectGroup.Inventory.cs
@@ -151,23 +151,44 @@ namespace OpenSim.Region.Environment.Scenes
                 taskItem.AssetID = item.AssetID;
                 taskItem.Name = item.Name;
                 taskItem.Description = item.Description;
-                taskItem.OwnerID = item.Owner;
+                taskItem.OwnerID = part.OwnerID; // Transfer ownership
                 taskItem.CreatorID = item.Creator;
                 taskItem.Type = item.AssetType;
                 taskItem.InvType = item.InvType;
 
-                taskItem.BasePermissions = item.BasePermissions;
-                taskItem.CurrentPermissions = item.CurrentPermissions;
-                // FIXME: ignoring group permissions for now as they aren't stored in item
-                taskItem.EveryonePermissions = item.EveryOnePermissions;
-                taskItem.NextPermissions = item.NextPermissions;
+                if (remoteClient != null &&
+                        remoteClient.AgentId != part.OwnerID &&
+                        m_scene.ExternalChecks.ExternalChecksPropagatePermissions())
+                {
+                    taskItem.BasePermissions = item.BasePermissions &
+                            item.NextPermissions;
+                    taskItem.CurrentPermissions = item.CurrentPermissions &
+                            item.NextPermissions;
+                    taskItem.EveryonePermissions = item.EveryOnePermissions &
+                            item.NextPermissions;
+                    taskItem.NextPermissions = item.NextPermissions;
+                    taskItem.CurrentPermissions |= 8;
+                } else {
+                    taskItem.BasePermissions = item.BasePermissions;
+                    taskItem.CurrentPermissions = item.CurrentPermissions;
+                    taskItem.CurrentPermissions |= 8;
+                    taskItem.EveryonePermissions = item.EveryOnePermissions;
+                    taskItem.NextPermissions = item.NextPermissions;
+                }
+
                 taskItem.Flags = item.Flags;
                 // TODO: These are pending addition of those fields to TaskInventoryItem
 //                taskItem.SalePrice = item.SalePrice;
 //                taskItem.SaleType = item.SaleType;
                 taskItem.CreationDate = (uint)item.CreationDate;
+                
+                bool addFromAllowedDrop = false;
+                if (remoteClient!=null) 
+                {
+                    addFromAllowedDrop = remoteClient.AgentId!=part.OwnerID;
+                }
 
-                part.AddInventoryItem(taskItem);
+                part.AddInventoryItem(taskItem, addFromAllowedDrop);
 
                 return true;
             }
diff --git a/OpenSim/Region/Environment/Scenes/SceneObjectPart.Inventory.cs b/OpenSim/Region/Environment/Scenes/SceneObjectPart.Inventory.cs
index 501f199..073bccf 100644
--- a/OpenSim/Region/Environment/Scenes/SceneObjectPart.Inventory.cs
+++ b/OpenSim/Region/Environment/Scenes/SceneObjectPart.Inventory.cs
@@ -289,16 +289,16 @@ namespace OpenSim.Region.Environment.Scenes
         /// name is chosen.
         /// </summary>
         /// <param name="item"></param>
-        public void AddInventoryItem(TaskInventoryItem item)
+        public void AddInventoryItem(TaskInventoryItem item, bool allowedDrop)
         {
-            AddInventoryItem(item.Name, item);
+            AddInventoryItem(item.Name, item, allowedDrop);
         }
 
         /// <summary>
         /// Add an item to this prim's inventory.  If an item with the same name already exists, it is replaced.
         /// </summary>
         /// <param name="item"></param>
-        public void AddInventoryItemExclusive(TaskInventoryItem item)
+        public void AddInventoryItemExclusive(TaskInventoryItem item, bool allowedDrop)
         {
             List<TaskInventoryItem> il = new List<TaskInventoryItem>(m_taskInventory.Values);
             foreach (TaskInventoryItem i in il)
@@ -313,7 +313,7 @@ namespace OpenSim.Region.Environment.Scenes
                 }
             }
 
-            AddInventoryItem(item.Name, item);
+            AddInventoryItem(item.Name, item, allowedDrop);
         }
 
         /// <summary>
@@ -324,7 +324,10 @@ namespace OpenSim.Region.Environment.Scenes
         /// The item itself.  The name within this structure is ignored in favour of the name
         /// given in this method's arguments
         /// </param>
-        protected void AddInventoryItem(string name, TaskInventoryItem item)
+        /// <param name="allowedDrop">
+        /// Item was only added to inventory because AllowedDrop is set
+        /// </param>
+        protected void AddInventoryItem(string name, TaskInventoryItem item, bool allowedDrop)
         {
             name = FindAvailableInventoryName(name);
             if (name == String.Empty)
@@ -337,7 +340,11 @@ namespace OpenSim.Region.Environment.Scenes
             lock (m_taskInventory)
             {
                 m_taskInventory.Add(item.ItemID, item);
-                TriggerScriptChangedEvent(Changed.INVENTORY);
+
+                if (allowedDrop) 
+                    TriggerScriptChangedEvent(Changed.ALLOWED_DROP);
+                else
+                    TriggerScriptChangedEvent(Changed.INVENTORY);
             }
 
             m_inventorySerial++;