From 98f29a47c0ad63fa20d4e3fa64971d0d0a5e959c Mon Sep 17 00:00:00 2001
From: Marck <marck00@nexgo.de>
Date: Tue, 2 Nov 2010 20:00:14 +0100
Subject: [PATCH] Do not include hyperlinks in a random region search during a
 login.

Before a random region is chosen, available fallback regions are used for the login.
---
 .../Services/LLLoginService/LLLoginService.cs | 40 ++++++++++++++-----
 prebuild.xml                                  |  1 +
 2 files changed, 31 insertions(+), 10 deletions(-)

diff --git a/OpenSim/Services/LLLoginService/LLLoginService.cs b/OpenSim/Services/LLLoginService/LLLoginService.cs
index a06476e9cb..fcfdd1d6d9 100644
--- a/OpenSim/Services/LLLoginService/LLLoginService.cs
+++ b/OpenSim/Services/LLLoginService/LLLoginService.cs
@@ -28,6 +28,7 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Linq;
 using System.Net;
 using System.Reflection;
 using System.Text.RegularExpressions;
@@ -427,12 +428,9 @@ namespace OpenSim.Services.LLLoginService
                     {
                         m_log.WarnFormat("[LLOGIN SERVICE]: User {0} {1} does not have a valid home and this grid does not have default locations. Attempting to find random region",
                             account.FirstName, account.LastName);
-                        defaults = m_GridService.GetRegionsByName(scopeID, "", 1);
-                        if (defaults != null && defaults.Count > 0)
-                        {
-                            region = defaults[0];
+                        region = FindAlternativeRegion(scopeID);
+                        if (region != null)
                             where = "safe";
-                        }
                     }
                 }
 
@@ -459,12 +457,9 @@ namespace OpenSim.Services.LLLoginService
                     else
                     {
                         m_log.Info("[LLOGIN SERVICE]: Last Region Not Found Attempting to find random region");
-                        defaults = m_GridService.GetRegionsByName(scopeID, "", 1);
-                        if (defaults != null && defaults.Count > 0)
-                        {
-                            region = defaults[0];
+                        region = FindAlternativeRegion(scopeID);
+                        if (region != null)
                             where = "safe";
-                        }
                     }
 
                 }
@@ -564,6 +559,31 @@ namespace OpenSim.Services.LLLoginService
 
         }
 
+        private GridRegion FindAlternativeRegion(UUID scopeID)
+        {
+            List<GridRegion> hyperlinks = null;
+            List<GridRegion> regions = m_GridService.GetFallbackRegions(scopeID, 1000 * (int)Constants.RegionSize, 1000 * (int)Constants.RegionSize);
+            if (regions != null && regions.Count > 0)
+            {
+                hyperlinks = m_GridService.GetHyperlinks(scopeID);
+                IEnumerable<GridRegion> availableRegions = regions.Except(hyperlinks);
+                if (availableRegions.Count() > 0)
+                    return availableRegions.ElementAt(0);
+            }
+            // No fallbacks, try to find an arbitrary region that is not a hyperlink
+            // maxNumber is fixed for now; maybe use some search pattern with increasing maxSize here?
+            regions = m_GridService.GetRegionsByName(scopeID, "", 10);
+            if (regions != null && regions.Count > 0)
+            {
+                if (hyperlinks == null)
+                    hyperlinks = m_GridService.GetHyperlinks(scopeID);
+                IEnumerable<GridRegion> availableRegions = regions.Except(hyperlinks);
+                if (availableRegions.Count() > 0)
+                    return availableRegions.ElementAt(0);
+            }
+            return null;
+        }
+
         private GridRegion FindForeignRegion(string domainName, uint port, string regionName, out GridRegion gatekeeper)
         {
             gatekeeper = new GridRegion();
diff --git a/prebuild.xml b/prebuild.xml
index e77d5c1fd2..ac003d9a17 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -1214,6 +1214,7 @@
 
       <ReferencePath>../../../bin/</ReferencePath>
       <Reference name="System"/>
+      <Reference name="System.Core"/>
       <Reference name="OpenSim.Framework"/>
       <Reference name="OpenSim.Framework.Capabilities"/>
       <Reference name="OpenSim.Framework.Console"/>