From 	6d3ee8bb39d47ed7b32e8905fa0b2fc31c5a9f80 2011-16-23 04:11:31 +0000
From: Michelle Argus <info@marentals.de>
Date: Mon, 2 Jul 2012 19:12:10 +0200
Subject: [PATCH] Adds a list of viewers that are allowed or banned from the region.

diff --git a/opensim/update/a/OpenSim/Region/Framework/Scenes/Scene.cs b/opensim/update/b/OpenSim/Region/Framework/Scenes/Scene.cs
index 385febf..5f1b814 100644
--- a/opensim/update/a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/opensim/update/b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -119,7 +119,10 @@ namespace OpenSim.Region.Framework.Scenes
         public float DefaultDrawDistance 
         {
             get { return m_defaultDrawDistance; }
-        }
+        }
+
+        private List<string> m_AllowedViewers = new List<string>();
+        private List<string> m_BanedViewers = new List<string>();
         
         // TODO: need to figure out how allow client agents but deny
         // root agents when ACL denies access to root agent
@@ -778,6 +781,24 @@ namespace OpenSim.Region.Framework.Scenes
                         RegionInfo.RegionSettings.TerrainImageID = tileID;
                     }
                 }
+
+                string grant = startupConfig.GetString("AllowedViewerList", String.Empty);
+                if (grant.Length > 0)
+                {
+                    foreach (string viewer in grant.Split(','))
+                    {
+                        m_AllowedViewers.Add(viewer.Trim().ToLower());
+                    }
+                }
+
+                grant = startupConfig.GetString("BannedViewerList", String.Empty);
+                if (grant.Length > 0)
+                {
+                    foreach (string viewer in grant.Split(','))
+                    {
+                        m_BanedViewers.Add(viewer.Trim().ToLower());
+                    }
+                }
 
                 MinFrameTime              = startupConfig.GetFloat( "MinFrameTime",                      MinFrameTime);
                 m_update_backup           = startupConfig.GetInt(   "UpdateStorageEveryNFrames",         m_update_backup);
@@ -3455,6 +3476,50 @@ namespace OpenSim.Region.Framework.Scenes
                 return false;
             }
 
+            //Check if the viewer is banned or in the viewer access list
+            //We check if the substring is listed for higher flexebility
+            bool ViewerDenied = true;
+
+            //Check if the specific viewer is listed in the allowed viewer list
+            if (m_AllowedViewers.Count > 0)
+            {
+                foreach (string viewer in m_AllowedViewers)
+                {
+                    if (viewer == agent.Viewer.Substring(0, viewer.Length).Trim().ToLower())
+                    {
+                        ViewerDenied = false;
+                        break;
+                    }
+                }
+            }
+            else
+            {
+                ViewerDenied = false;
+            }
+
+            //Check if the viewer is in the banned list
+            if (m_BanedViewers.Count > 0)
+            {
+                foreach (string viewer in m_BanedViewers)
+                {
+                    if (viewer == agent.Viewer.Substring(0, viewer.Length).Trim().ToLower())
+                    {
+                        ViewerDenied = true;
+                        break;
+                    }
+                }
+            }
+
+            if (ViewerDenied)
+            {
+                m_log.DebugFormat(
+                    "[SCENE]: Access denied for {0} {1} using {2}",
+                    agent.firstname, agent.lastname, agent.Viewer);
+                reason = "Access denied, your viewer is banned by the region owner";
+                return false;
+            }           
+
+
             ScenePresence sp = GetScenePresence(agent.AgentID);
 
             if (sp != null && !sp.IsChildAgent)
diff --git a/opensim/update/a/bin/OpenSim.ini.example b/opensim/update/b/bin/OpenSim.ini.example
index aa29c07..741877e 100644
--- a/opensim/update/a/bin/OpenSim.ini.example
+++ b/opensim/update/b/bin/OpenSim.ini.example
@@ -254,6 +254,23 @@
     ;; default is false
     ; TelehubAllowLandmark = false
 
+    ;# Comma separated list of viewers which may gain access to the regions.
+    ;; One can use a Substring of the viewer name to enable only certain subversions
+    ;; Example: Agent uses the viewer "Imprudence 1.3.2.0"
+    ;; - "Imprudence" has access
+    ;; - "Imprudence 1.3" has access
+    ;; - "Imprudence 1.3.1" has no access
+    ;; AllowedViewerList = 
+
+    ;# Comma separated list of viewers which may not gain access to the regions.
+    ;; One can use a Substring of the viewer name to disable only certain subversions
+    ;; Example: Agent uses the viewer "Imprudence 1.3.2.0"
+    ;; - "Imprudence" has no access
+    ;; - "Imprudence 1.3" has no access
+    ;; - "Imprudence 1.3.1" has access
+    ; BannedViewerList = 
+
+
 [Estates]
     ; If these values are commented out then the user will be asked for estate details when required (this is the normal case).
   	; If these values are uncommented then they will be used to create a default estate as necessary.