From 934ae03d44716e7102d4548045a6aed891209603 Mon Sep 17 00:00:00 2001
From: Diva Canto
Date: Sun, 3 Oct 2010 20:35:26 -0700
Subject: Made the Gatekeeper proxy-able.

---
 OpenSim/Server/Handlers/Hypergrid/AgentHandlers.cs |  3 ++-
 .../Hypergrid/GatekeeperServerConnector.cs         |  6 +++++-
 .../Server/Handlers/Simulation/AgentHandlers.cs    | 22 +++++++++++++++++++++-
 3 files changed, 28 insertions(+), 3 deletions(-)

(limited to 'OpenSim/Server/Handlers')

diff --git a/OpenSim/Server/Handlers/Hypergrid/AgentHandlers.cs b/OpenSim/Server/Handlers/Hypergrid/AgentHandlers.cs
index c951653..31eefb1 100644
--- a/OpenSim/Server/Handlers/Hypergrid/AgentHandlers.cs
+++ b/OpenSim/Server/Handlers/Hypergrid/AgentHandlers.cs
@@ -54,9 +54,10 @@ namespace OpenSim.Server.Handlers.Hypergrid
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
         private IGatekeeperService m_GatekeeperService;
 
-        public GatekeeperAgentHandler(IGatekeeperService gatekeeper)
+        public GatekeeperAgentHandler(IGatekeeperService gatekeeper, bool proxy)
         {
             m_GatekeeperService = gatekeeper;
+            m_Proxy = proxy;
         }
 
         protected override bool CreateAgent(GridRegion destination, AgentCircuitData aCircuit, uint teleportFlags, out string reason)
diff --git a/OpenSim/Server/Handlers/Hypergrid/GatekeeperServerConnector.cs b/OpenSim/Server/Handlers/Hypergrid/GatekeeperServerConnector.cs
index dcb2725..49de8b1 100644
--- a/OpenSim/Server/Handlers/Hypergrid/GatekeeperServerConnector.cs
+++ b/OpenSim/Server/Handlers/Hypergrid/GatekeeperServerConnector.cs
@@ -51,6 +51,8 @@ namespace OpenSim.Server.Handlers.Hypergrid
             get { return m_GatekeeperService; }
         }
 
+        bool m_Proxy = false;
+
         public GatekeeperServiceInConnector(IConfigSource config, IHttpServer server, ISimulationService simService) :
                 base(config, server, String.Empty)
         {
@@ -65,11 +67,13 @@ namespace OpenSim.Server.Handlers.Hypergrid
             if (m_GatekeeperService == null)
                 throw new Exception("Gatekeeper server connector cannot proceed because of missing service");
 
+            m_Proxy = gridConfig.GetBoolean("HasProxy", false);
+
             HypergridHandlers hghandlers = new HypergridHandlers(m_GatekeeperService);
             server.AddXmlRPCHandler("link_region", hghandlers.LinkRegionRequest, false);
             server.AddXmlRPCHandler("get_region", hghandlers.GetRegion, false);
 
-            server.AddHTTPHandler("/foreignagent/", new GatekeeperAgentHandler(m_GatekeeperService).Handler);
+            server.AddHTTPHandler("/foreignagent/", new GatekeeperAgentHandler(m_GatekeeperService, m_Proxy).Handler);
         }
 
         public GatekeeperServiceInConnector(IConfigSource config, IHttpServer server)
diff --git a/OpenSim/Server/Handlers/Simulation/AgentHandlers.cs b/OpenSim/Server/Handlers/Simulation/AgentHandlers.cs
index 2997430..1f7e502 100644
--- a/OpenSim/Server/Handlers/Simulation/AgentHandlers.cs
+++ b/OpenSim/Server/Handlers/Simulation/AgentHandlers.cs
@@ -52,6 +52,8 @@ namespace OpenSim.Server.Handlers.Simulation
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
         private ISimulationService m_SimulationService;
 
+        protected bool m_Proxy = false;
+
         public AgentHandler() { }
 
         public AgentHandler(ISimulationService sim)
@@ -179,13 +181,31 @@ namespace OpenSim.Server.Handlers.Simulation
             resp["reason"] = OSD.FromString(reason);
             resp["success"] = OSD.FromBoolean(result);
             // Let's also send out the IP address of the caller back to the caller (HG 1.5)
-            resp["your_ip"] = OSD.FromString(Util.GetCallerIP(request));
+            resp["your_ip"] = OSD.FromString(GetCallerIP(request));
 
             // TODO: add reason if not String.Empty?
             responsedata["int_response_code"] = HttpStatusCode.OK;
             responsedata["str_response_string"] = OSDParser.SerializeJsonString(resp);
         }
 
+        private string GetCallerIP(Hashtable request)
+        {
+            if (!m_Proxy)
+                return Util.GetCallerIP(request);
+
+            // We're behind a proxy
+            Hashtable headers = (Hashtable)request["headers"];
+            if (headers.ContainsKey("X-Forwarded-For") && headers["X-Forwarded-For"] != null)
+            {
+                IPEndPoint ep = Util.GetClientIPFromXFF((string)headers["X-Forwarded-For"]);
+                if (ep != null)
+                    return ep.Address.ToString();
+            }
+
+            // Oops
+            return Util.GetCallerIP(request);
+        }
+
         // subclasses can override this
         protected virtual bool CreateAgent(GridRegion destination, AgentCircuitData aCircuit, uint teleportFlags, out string reason)
         {
-- 
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