Fix mantis #5413. WARNING: new config variable in section [GridService] of the simulators called Gatekeeper -- intended to have the URL of the grid's Gatekeeper service (so that it can be checked against). See ini.examples.

OpenSim/Region/CoreModules/World/WorldMap/MapSearchModule.cs

@@ -100,8 +100,12 @@ namespace OpenSim.Region.CoreModules.World.WorldMap
                 // service wasn't available; maybe still an old GridServer. Try the old API, though it will return only one region
                 regionInfos = new List<GridRegion>();
                 GridRegion info = m_scene.GridService.GetRegionByName(m_scene.RegionInfo.ScopeID, mapName);
-                if (info != null) regionInfos.Add(info);
+                if (info != null) 
+                    regionInfos.Add(info);
             }
+            else if (regionInfos.Count == 0 && mapName.StartsWith("http://"))
+                remoteClient.SendAlertMessage("Hyperlink could not be established.");
+
             m_log.DebugFormat("[MAPSEARCHMODULE]: search {0} returned {1} regions", mapName, regionInfos.Count);
             List<MapBlockData> blocks = new List<MapBlockData>();
 

OpenSim/Services/GridService/HypergridLinker.cs

@@ -65,6 +65,7 @@ namespace OpenSim.Services.GridService
         protected UUID m_ScopeID = UUID.Zero;
         protected bool m_Check4096 = true;
         protected string m_MapTileDirectory = string.Empty;
+        protected string m_ThisGatekeeper = string.Empty;
 
         // Hyperlink regions are hyperlinks on the map
         public readonly Dictionary<UUID, GridRegion> m_HyperlinkRegions = new Dictionary<UUID, GridRegion>();
@@ -123,6 +124,8 @@ namespace OpenSim.Services.GridService
 
                 m_MapTileDirectory = gridConfig.GetString("MapTileDirectory", "maptiles");
 
+                m_ThisGatekeeper = gridConfig.GetString("Gatekeeper", string.Empty);
+
                 m_GatekeeperConnector = new GatekeeperServiceConnector(m_AssetService);
 
                 m_log.Debug("[HYPERGRID LINKER]: Loaded all services...");
@@ -266,6 +269,13 @@ namespace OpenSim.Services.GridService
             regInfo.ScopeID = scopeID;
             regInfo.EstateOwner = ownerID;
 
+            // Make sure we're not hyperlinking to regions on this grid!
+            if (regInfo.ServerURI.Trim(new char[]{'/', ' '}) == m_ThisGatekeeper.Trim(new char[]{'/', ' '}))
+            {
+                reason = "Cannot hyperlink to regions on the same grid";
+                return false;
+            }
+
             // Check for free coordinates
             GridRegion region = m_GridService.GetRegionByPosition(regInfo.ScopeID, regInfo.RegionLocX, regInfo.RegionLocY);
             if (region != null)

bin/config-include/GridCommon.ini.example

@@ -45,6 +45,12 @@
     ;; Directory for map tile images of linked regions
     ; MapTileDirectory = "./maptiles"
 
+    ; === HG ONLY ===
+	;; change this to the address of your Gatekeeper service
+	;; (usually bundled with the rest of the services in one 
+	;; Robust server in port 8002, but not always)
+	Gatekeeper="http://mygridserver.com:8002"
+
 [AvatarService]
     ;
     ; change this to your grid-wide grid server

bin/config-include/StandaloneCommon.ini.example

@@ -78,6 +78,11 @@
     ;; For example:
     Region_Welcome_Area = "DefaultRegion, FallbackRegion"
 
+    ; === HG ONLY ===
+	;; change this to the address of your simulator
+	Gatekeeper="http://127.0.0.1:9000"
+
+
 [LibraryModule]
     ; Set this if you want to change the name of the OpenSim Library
     ;LibraryName = "My World's Library"