Fix errors introduced by incomplete understanding of what folded perms are

OpenSim/ApplicationPlugins/RemoteController/RemoteAdminPlugin.cs

@@ -3053,11 +3053,13 @@ namespace OpenSim.ApplicationPlugins.RemoteController
         {
             if (item.InvType == (int)InventoryType.Object && (item.CurrentPermissions & 7) != 0)
             {
-                uint perms = item.CurrentPermissions;
+                if ((item.CurrentPermissions & ((uint)PermissionMask.Copy >> 13)) == 0)
-                PermissionsUtil.ApplyFoldedPermissions(item.CurrentPermissions, ref perms);
+                    item.CurrentPermissions &= ~(uint)PermissionMask.Copy;
-                item.CurrentPermissions = perms;
+                if ((item.CurrentPermissions & ((uint)PermissionMask.Transfer >> 13)) == 0)
+                    item.CurrentPermissions &= ~(uint)PermissionMask.Transfer;
+                if ((item.CurrentPermissions & ((uint)PermissionMask.Modify >> 13)) == 0)
+                    item.CurrentPermissions &= ~(uint)PermissionMask.Modify;
             }
-
             item.CurrentPermissions &= item.NextPermissions;
             item.BasePermissions &= item.NextPermissions;
             item.EveryOnePermissions &= item.NextPermissions;

OpenSim/Framework/PermissionsUtil.cs

@@ -64,24 +64,5 @@ namespace OpenSim.Framework
                 str = ".";
             return str;
         }
-
-        /// <summary>
-        /// Applies an object's folded permissions to its regular permissions.
-        /// </summary>
-        /// <param name="foldedPerms">The folded permissions. Only the lowest 7 bits are examined.</param>
-        /// <param name="mainPerms">The permissions variable to modify.</param>
-        public static void ApplyFoldedPermissions(uint foldedPerms, ref uint mainPerms)
-        {
-//            if ((foldedPerms & 7) == 0)
-//                return; // assume that if the folded permissions are 0 then this means that they weren't actually recorded
-
-            if ((foldedPerms & ((uint)PermissionMask.Copy >> 13)) == 0)
-                mainPerms &= ~(uint)PermissionMask.Copy;
-            if ((foldedPerms & ((uint)PermissionMask.Transfer >> 13)) == 0)
-                mainPerms &= ~(uint)PermissionMask.Transfer;
-            if ((foldedPerms & ((uint)PermissionMask.Modify >> 13)) == 0)
-                mainPerms &= ~(uint)PermissionMask.Modify;
-        }
-
     }
 }

OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs

@@ -532,17 +532,13 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
             }
             else
             {
+                AddPermissions(item, objlist[0], objlist, remoteClient);
+
                 item.CreationDate = Util.UnixTimeSinceEpoch();
                 item.Description = asset.Description;
                 item.Name = asset.Name;
                 item.AssetType = asset.Type;
 
-                //preserve perms on return
-                if(DeRezAction.Return == action)
-                    AddPermissions(item, objlist[0], objlist, null);
-                else
-                    AddPermissions(item, objlist[0], objlist, remoteClient);
-
                 m_Scene.AddInventoryItem(item);
 
                 if (remoteClient != null && item.Owner == remoteClient.AgentId)
@@ -599,15 +595,19 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
             }
             effectivePerms |= (uint)PermissionMask.Move;
 
-            //PermissionsUtil.LogPermissions(item.Name, "Before AddPermissions", item.BasePermissions, item.CurrentPermissions, item.NextPermissions);
-
             if (remoteClient != null && (remoteClient.AgentId != so.RootPart.OwnerID) && m_Scene.Permissions.PropagatePermissions())
             {
                 // Changing ownership, so apply the "Next Owner" permissions to all of the
                 // inventory item's permissions.
 
                 uint perms = effectivePerms;
-                PermissionsUtil.ApplyFoldedPermissions(effectivePerms, ref perms);
+                uint nextPerms = (perms & 7) << 13;
+                if ((nextPerms & (uint)PermissionMask.Copy) == 0)
+                    perms &= ~(uint)PermissionMask.Copy;
+                if ((nextPerms & (uint)PermissionMask.Transfer) == 0)
+                    perms &= ~(uint)PermissionMask.Transfer;
+                if ((nextPerms & (uint)PermissionMask.Modify) == 0)
+                    perms &= ~(uint)PermissionMask.Modify;
 
                 item.BasePermissions = perms & so.RootPart.NextOwnerMask;
                 item.CurrentPermissions = item.BasePermissions;
@@ -642,8 +642,6 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
                          7); // Preserve folded permissions
             }    
             
-            //PermissionsUtil.LogPermissions(item.Name, "After AddPermissions", item.BasePermissions, item.CurrentPermissions, item.NextPermissions);
-
             return item;
         }
 

OpenSim/Region/CoreModules/World/Objects/BuySell/BuySellModule.cs

@@ -211,7 +211,13 @@ namespace OpenSim.Region.CoreModules.World.Objects.BuySell
                 item.InvType = (int)InventoryType.Object;
                 item.Folder = categoryID;
 
-                PermissionsUtil.ApplyFoldedPermissions(perms, ref perms);
+                uint nextPerms=(perms & 7) << 13;
+                if ((nextPerms & (uint)PermissionMask.Copy) == 0)
+                    perms &= ~(uint)PermissionMask.Copy;
+                if ((nextPerms & (uint)PermissionMask.Transfer) == 0)
+                    perms &= ~(uint)PermissionMask.Transfer;
+                if ((nextPerms & (uint)PermissionMask.Modify) == 0)
+                    perms &= ~(uint)PermissionMask.Modify;
 
                 item.BasePermissions = perms & part.NextOwnerMask;
                 item.CurrentPermissions = perms & part.NextOwnerMask;

OpenSim/Region/Framework/Scenes/Scene.Inventory.cs

@@ -681,13 +681,17 @@ namespace OpenSim.Region.Framework.Scenes
                 // a mask
                 if (item.InvType == (int)InventoryType.Object)
                 {
+                    // Create a safe mask for the current perms
+                    uint foldedPerms = (item.CurrentPermissions & 7) << 13;
+                    foldedPerms |= permsMask;
+
                     bool isRootMod = (item.CurrentPermissions &
                                       (uint)PermissionMask.Modify) != 0 ?
                                       true : false;
 
                     // Mask the owner perms to the folded perms
-                    PermissionsUtil.ApplyFoldedPermissions(item.CurrentPermissions, ref ownerPerms);
+                    ownerPerms &= foldedPerms;
-                    PermissionsUtil.ApplyFoldedPermissions(item.CurrentPermissions, ref basePerms);
+                    basePerms &= foldedPerms;
 
                     // If the root was mod, let the mask reflect that
                     // We also need to adjust the base here, because
@@ -1240,19 +1244,9 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 agentItem.BasePermissions = taskItem.BasePermissions & (taskItem.NextPermissions | (uint)PermissionMask.Move);
                 if (taskItem.InvType == (int)InventoryType.Object)
-                {
+                    agentItem.CurrentPermissions = agentItem.BasePermissions & (((taskItem.CurrentPermissions & 7) << 13) | (taskItem.CurrentPermissions & (uint)PermissionMask.Move));
-                    // Bake the new base permissions from folded permissions
+                else
-                    // The folded perms are in the lowest 3 bits of the current perms
+                    agentItem.CurrentPermissions = agentItem.BasePermissions & taskItem.CurrentPermissions;
-                    // We use base permissions here to avoid baking the "Locked" status
-                    // into the item as it is passed.
-                    uint perms = taskItem.BasePermissions & taskItem.NextPermissions;
-                    PermissionsUtil.ApplyFoldedPermissions(taskItem.CurrentPermissions, ref perms);
-                    // Avoid the "lock trap" - move must always be enabled but the above may remove it
-                    // Add it back here.
-                    agentItem.BasePermissions = perms | (uint)PermissionMask.Move;
-                    // Newly given items cannot be "locked" on rez. Make sure by
-                    // setting current equal to base.
-                }
 
                 agentItem.CurrentPermissions = agentItem.BasePermissions;
 

OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs

@@ -1358,6 +1358,12 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 if (item.InvType == (int)InventoryType.Object && (item.CurrentPermissions & 7) != 0)
                 {
+//                    m_log.DebugFormat (
+//                        "[SCENE OBJECT PART INVENTORY]: Applying next permissions {0} to {1} in {2} with current {3}, base {4}, everyone {5}",
+//                        item.NextPermissions, item.Name, m_part.Name, item.CurrentPermissions, item.BasePermissions, item.EveryonePermissions);
+
+                    if (item.InvType == (int)InventoryType.Object && (item.CurrentPermissions & 7) != 0)
+                    {
                         if ((item.CurrentPermissions & ((uint)PermissionMask.Copy >> 13)) == 0)
                             item.CurrentPermissions &= ~(uint)PermissionMask.Copy;
                         if ((item.CurrentPermissions & ((uint)PermissionMask.Transfer >> 13)) == 0)
@@ -1365,6 +1371,7 @@ namespace OpenSim.Region.Framework.Scenes
                         if ((item.CurrentPermissions & ((uint)PermissionMask.Modify >> 13)) == 0)
                             item.CurrentPermissions &= ~(uint)PermissionMask.Modify;
                     }
+                }
                 item.CurrentPermissions &= item.NextPermissions;
                 item.BasePermissions &= item.NextPermissions;
                 item.EveryonePermissions &= item.NextPermissions;