Make it possible for new inventory 'libraries' to be added without changing the default OpenSimLibrary files. Additional library folders and items can be added in a separate

directory 
and linked in by an entry to inventory/Libraries.xml

OpenSim/Framework/Communications/Cache/LibraryRootFolder.cs

@@ -64,35 +64,9 @@ namespace OpenSim.Framework.Communications.Cache
             
             libraryFolders.Add(folderID, this);
             
-            string foldersPath = Path.Combine(Util.configDir(), "inventory/OpenSimLibrary/OpenSimLibraryFolders.xml");
+            LoadLibraries(Path.Combine(Util.inventoryDir(), "Libraries.xml"));
-            if (File.Exists(foldersPath))
-            {
-                try
-                {
-                    XmlConfigSource source = new XmlConfigSource(foldersPath);
-                    ReadFoldersFromFile(source);
-                }
-                catch (XmlException e)
-                {
-                    MainLog.Instance.Error("AGENTINVENTORY", "Error loading " + foldersPath + ": " + e.ToString());
-                }
-            }            
 
             CreateLibraryItems();
-
-            string itemsPath = Path.Combine(Util.configDir(), "inventory/OpenSimLibrary/OpenSimLibrary.xml");
-            if (File.Exists(itemsPath))
-            {
-                try
-                {
-                    XmlConfigSource source = new XmlConfigSource(itemsPath);
-                    ReadItemsFromFile(source);
-                }
-                catch (XmlException e)
-                {
-                    MainLog.Instance.Error("AGENTINVENTORY", "Error loading " + itemsPath + ": " + e.ToString());
-                }
-            }
         }
 
         /// <summary>
@@ -155,15 +129,43 @@ namespace OpenSim.Framework.Communications.Cache
         }
         
         /// <summary>
-        /// Read library inventory folders from an external source
+        /// Use the asset set information at path to load assets
+        /// </summary>
+        /// <param name="path"></param>
+        /// <param name="assets"></param>
+        protected void LoadLibraries(string librariesControlPath)
+        {
+            MainLog.Instance.Verbose(
+                "LIBRARYINVENTORY", "Loading libraries control file {0}", librariesControlPath);
+            
+            LoadFromFile(librariesControlPath, "Libraries control", ReadLibraryFromConfig);
+        }
+        
+        /// <summary>
+        /// Read a library set from config
+        /// </summary>
+        /// <param name="config"></param>
+        protected void ReadLibraryFromConfig(IConfig config)
+        {
+            string foldersPath 
+                = Path.Combine(
+                    Util.inventoryDir(), config.GetString("foldersFile", ""));
+            
+            LoadFromFile(foldersPath, "Library folders", ReadFolderFromConfig);
+            
+            string itemsPath 
+                = Path.Combine(
+                    Util.inventoryDir(), config.GetString("itemsFile", ""));
+            
+            LoadFromFile(itemsPath, "Library items", ReadItemFromConfig);
+        }
+        
+        /// <summary>
+        /// Read a library inventory folder from a loaded configuration
         /// </summary>
         /// <param name="source"></param>
-        private void ReadFoldersFromFile(IConfigSource source)
+        private void ReadFolderFromConfig(IConfig config)
         {                        
-            for (int i = 0; i < source.Configs.Count; i++)
-            {       
-                IConfig config = source.Configs[i];
-                
             InventoryFolderImpl folderInfo = new InventoryFolderImpl();
             
             folderInfo.folderID = new LLUUID(config.GetString("folderID", folderID.ToString()));
@@ -192,32 +194,27 @@ namespace OpenSim.Framework.Communications.Cache
                     folderInfo.name, folderInfo.folderID, folderInfo.parentID);
             }
         }
-        }
 
         /// <summary>
-        /// Read library inventory items metadata from an external source
+        /// Read a library inventory item metadata from a loaded configuration
         /// </summary>
         /// <param name="source"></param>        
-        private void ReadItemsFromFile(IConfigSource source)
+        private void ReadItemFromConfig(IConfig config)
-        {
-            for (int i = 0; i < source.Configs.Count; i++)
         {
             InventoryItemBase item = new InventoryItemBase();
             item.avatarID = libOwner;
             item.creatorsID = libOwner;
-                item.inventoryID =
+            item.inventoryID = new LLUUID(config.GetString("inventoryID", folderID.ToString()));
-                    new LLUUID(source.Configs[i].GetString("inventoryID", folderID.ToString()));
+            item.assetID = new LLUUID(config.GetString("assetID", LLUUID.Random().ToString()));
-                item.assetID = new LLUUID(source.Configs[i].GetString("assetID", LLUUID.Random().ToString()));
+            item.parentFolderID = new LLUUID(config.GetString("folderID", folderID.ToString()));
-                item.parentFolderID 
+            item.inventoryDescription = config.GetString("description", "");
-                    = new LLUUID(source.Configs[i].GetString("folderID", folderID.ToString()));
+            item.inventoryName = config.GetString("name", "");
-                item.inventoryDescription = source.Configs[i].GetString("description", "");
+            item.assetType = config.GetInt("assetType", 0);
-                item.inventoryName = source.Configs[i].GetString("name", "");
+            item.invType = config.GetInt("inventoryType", 0);
-                item.assetType = source.Configs[i].GetInt("assetType", 0);
+            item.inventoryCurrentPermissions = (uint)config.GetLong("currentPermissions", 0x7FFFFFFF);
-                item.invType = source.Configs[i].GetInt("inventoryType", 0);
+            item.inventoryNextPermissions = (uint)config.GetLong("nextPermissions", 0x7FFFFFFF);
-                item.inventoryCurrentPermissions = (uint) source.Configs[i].GetLong("currentPermissions", 0x7FFFFFFF);
+            item.inventoryEveryOnePermissions = (uint)config.GetLong("everyonePermissions", 0x7FFFFFFF);
-                item.inventoryNextPermissions = (uint) source.Configs[i].GetLong("nextPermissions", 0x7FFFFFFF);
+            item.inventoryBasePermissions = (uint)config.GetLong("basePermissions", 0x7FFFFFFF);
-                item.inventoryEveryOnePermissions = (uint) source.Configs[i].GetLong("everyonePermissions", 0x7FFFFFFF);
-                item.inventoryBasePermissions = (uint) source.Configs[i].GetLong("basePermissions", 0x7FFFFFFF);
             
             if (libraryFolders.ContainsKey(item.parentFolderID))
             {
@@ -233,6 +230,39 @@ namespace OpenSim.Framework.Communications.Cache
                     item.inventoryName, item.inventoryID, item.parentFolderID);
             }                
         }
+                
+        private delegate void ConfigAction(IConfig config);        
+        
+        /// <summary>
+        /// Load the given configuration at a path and perform an action on each Config contained within it
+        /// </summary>
+        /// <param name="path"></param>
+        /// <param name="fileDescription"></param>
+        /// <param name="action"></param>
+        private void LoadFromFile(string path, string fileDescription, ConfigAction action)
+        {            
+            if (File.Exists(path))
+            {
+                try
+                {
+                    XmlConfigSource source = new XmlConfigSource(path);
+
+                    for (int i = 0; i < source.Configs.Count; i++)
+                    {    
+                        action(source.Configs[i]);
+                    }
+                }
+                catch (XmlException e)
+                {
+                    MainLog.Instance.Error(
+                        "LIBRARYINVENTORY", "Error loading {0} : {1}", path, e);
+                }                
+            }
+            else
+            {
+                MainLog.Instance.Error(
+                    "LIBRARYINVENTORY", "{0} file {1} does not exist!", fileDescription, path);
+            }            
         }
         
         /// <summary>

OpenSim/Framework/Communications/LoginService.cs

@@ -280,6 +280,7 @@ namespace OpenSim.Framework.UserManagement
             }
             return buddylistreturn;
         }
+        
         /// <summary>
         /// Converts the inventory library skeleton into the form required by the rpc request.
         /// </summary>

OpenSim/Framework/Util.cs

@@ -321,7 +321,12 @@ namespace OpenSim.Framework
         
         public static string assetsDir()
         {
-            return "assets";
+            return Path.Combine(configDir(), "assets");
+        }
+
+        public static string inventoryDir()
+        {
+            return Path.Combine(configDir(), "inventory");
         }
 
         public static string configDir()

bin/assets/AssetSets.xml

@@ -1,10 +1,15 @@
 <Nini>
   <!-- You probably don't want to remove the OpenSim asset set
-       since it contains various default assets which are currently hardcoded -->
+       since it contains various default assets which are currently hardcoded 
+       However, you can remove the corresponding inventory library in bin/inventory if you wish
+  -->
+
   <Section Name="OpenSim Asset Set">
     <Key Name="file" Value="OpenSimAssetSet/OpenSimAssetSet.xml"/>
   </Section>
+
   <!-- New asset sets can be added as shown below -->
+
 <!--
   <Section Name="My Asset Set">
     <Key Name="file" Value="MyAssetSet/MyAssetSet.xml"/>

bin/inventory/Libraries.xml

@@ -0,0 +1,17 @@
+<Nini>
+  <Section Name="OpenSim Standard Library">
+    <Key Name="foldersFile" Value="OpenSimLibrary/OpenSimLibraryFolders.xml"/>
+    <Key Name="itemsFile" Value="OpenSimLibrary/OpenSimLibrary.xml"/>
+  </Section>
+  <!-- Additional libraries can be added as shown below.  These folders and items can appear underneath
+       the hardcoded root library folder ("OpenSim Library") 
+
+       You can also add folders and items to the folders of libraries defined earlier on in this file -->
+
+<!--
+  <Section Name="My Site Library">
+    <Key Name="foldersFile" Value="MySiteLibrary/MySiteLibraryFolders.xml"/>
+    <Key Name="itemsFile" Value="MySiteLibrary/MySiteLibraryItems.xml"/>
+  </Section>
+-->
+</Nini>

bin/inventory/README.txt

@@ -1,14 +1,21 @@
 README
 
-The standard common inventory library is configured here.  You can add new inventory 
+Folders and items which will appear in the standard common library for all
-folders to the standard library by editing OpenSimLibary/OpenSimLibraryFolders.xml
+avatars can be configured here.  The root folder (currently called OpenSim
-You can also add new inventory items to OpenSimLibrary/OpenSimLibrary.xml,
+Library) is hardcoded, but you can add your own configuration of folders and
-as long as they have a corresponding asset entry in bin/OpenSimAssetSet.xml.
+items directly beneath this, in addition to (or instead of) the contents of the 
+default OpenSim library.
 
-The same set of folders and items must be present in the configuration of both
+To add a new library, edit Libraries.xml.  The entry in here needs to point to
-the grid servers and all the regions.  The reasons for this are historical - 
+two further xml files, one which details your library inventory folders and another
-this restriction will probably be lifted in the future, at which point the
+which details your library inventory items.  Each inventory item will need to be
-inventory items and folders will only need to be configured on the grid inventory
+associated with an asset.  Assets are configured separately in the bin/assets
-server (assuming you are running in grid mode rather than standalone)
+directory.
+
+If you are running in grid mode, any library you add must be present in both 
+your grid servers installation and in
+every region installation, otherwise library items will fail in the regions
+where the inventory configuration is not present.  The reasons for this are historical
+and will probably be lifted in a future revision.
 
 Files in the attic directory are currently unused.