UserAgentService: change handling of its external IP

1 files changed, 28 insertions, 22 deletions

diff --git a/OpenSim/Services/HypergridService/UserAgentService.cs b/OpenSim/Services/HypergridService/UserAgentService.cs
index 6f2cdd5..bfa97a1 100644
--- a/OpenSim/Services/HypergridService/UserAgentService.cs
+++ b/OpenSim/Services/HypergridService/UserAgentService.cs
@@ -73,6 +73,7 @@ namespace OpenSim.Services.HypergridService
         protected static FriendsSimConnector m_FriendsSimConnector; // grid
 
         protected static string m_GridName;
+        protected static string m_MyExternalIP = "";
 
         protected static int m_LevelOutsideContacts;
         protected static bool m_ShowDetails;
@@ -147,9 +148,20 @@ namespace OpenSim.Services.HypergridService
                     }
                 }
 
-                if (!m_GridName.EndsWith("/"))
-                    m_GridName = m_GridName + "/";
-
+                if (!string.IsNullOrEmpty(m_GridName))
+                {
+                    m_GridName = m_GridName.ToLowerInvariant();
+                    if (!m_GridName.EndsWith("/"))
+                        m_GridName = m_GridName + "/";
+                    Uri gateURI;
+                    if(!Uri.TryCreate(m_GridName, UriKind.Absolute, out gateURI))
+                        throw new Exception(String.Format("[UserAgentService] could not parse gatekeeper uri"));
+                    string host = gateURI.DnsSafeHost;
+                    IPAddress ip = Util.GetHostFromDNS(host);
+                    if(ip == null)
+                        throw new Exception(String.Format("[UserAgentService] failed to resolve gatekeeper host"));
+                    m_MyExternalIP = ip.ToString();
+                }
                 // Finally some cleanup
                 m_Database.DeleteOld();
 
@@ -189,7 +201,6 @@ namespace OpenSim.Services.HypergridService
             }
         }
 
-
         public GridRegion GetHomeRegion(UUID userID, out Vector3 position, out Vector3 lookAt)
         {
             position = new Vector3(128, 128, 0); lookAt = Vector3.UnitY;
@@ -222,7 +233,7 @@ namespace OpenSim.Services.HypergridService
             m_log.DebugFormat("[USER AGENT SERVICE]: Request to login user {0} {1} (@{2}) to grid {3}",
                 agentCircuit.firstname, agentCircuit.lastname, (fromLogin ? agentCircuit.IPAddress : "stored IP"), gatekeeper.ServerURI);
 
-            string gridName = gatekeeper.ServerURI;
+            string gridName = gatekeeper.ServerURI.ToLowerInvariant();
 
             UserAccount account = m_UserAccountService.GetUserAccount(UUID.Zero, agentCircuit.AgentID);
             if (account == null)
@@ -269,8 +280,13 @@ namespace OpenSim.Services.HypergridService
             TravelingAgentInfo old = null;
             TravelingAgentInfo travel = CreateTravelInfo(agentCircuit, region, fromLogin, out old);
 
+            if(!fromLogin && old != null && !string.IsNullOrEmpty(old.ClientIPAddress))
+            {
+                m_log.DebugFormat("[USER AGENT SERVICE]: stored IP = {0}. Old circuit IP: {1}", old.ClientIPAddress, agentCircuit.IPAddress);
+                agentCircuit.IPAddress = old.ClientIPAddress;
+            }
+
             bool success = false;
-            string myExternalIP = string.Empty;
 
             m_log.DebugFormat("[USER AGENT SERVICE]: this grid: {0}, desired grid: {1}, desired region: {2}", m_GridName, gridName, region.RegionID);
 
@@ -282,7 +298,7 @@ namespace OpenSim.Services.HypergridService
             {
                 //TODO: Should there not be a call to QueryAccess here?
                 EntityTransferContext ctx = new EntityTransferContext();
-                success = m_GatekeeperConnector.CreateAgent(source, region, agentCircuit, (uint)Constants.TeleportFlags.ViaLogin, ctx, out myExternalIP, out reason);
+                success = m_GatekeeperConnector.CreateAgent(source, region, agentCircuit, (uint)Constants.TeleportFlags.ViaLogin, ctx, out reason);
             }
 
             if (!success)
@@ -300,14 +316,6 @@ namespace OpenSim.Services.HypergridService
 
             // Everything is ok
 
-            if (!fromLogin)
-            {
-                // Update the perceived IP Address of our grid
-                m_log.DebugFormat("[USER AGENT SERVICE]: Gatekeeper sees me as {0}", myExternalIP);
-            }
-
-            travel.MyIpAddress = myExternalIP;
-
             StoreTravelInfo(travel);
 
             return true;
@@ -384,10 +392,12 @@ namespace OpenSim.Services.HypergridService
 
             TravelingAgentInfo travel = new TravelingAgentInfo(hgt);
 
-            bool result = travel.ClientIPAddress == reportedIP || travel.MyIpAddress == reportedIP; // NATed
+            bool result = travel.ClientIPAddress == reportedIP;
+            if(!result && !string.IsNullOrEmpty(m_MyExternalIP))
+                result = reportedIP == m_MyExternalIP; // NATed
 
-            m_log.DebugFormat("[USER AGENT SERVICE]: Comparing {0} with login IP {1} and MyIP {1}; result is {3}",
-                                reportedIP, travel.ClientIPAddress, travel.MyIpAddress, result);
+            m_log.DebugFormat("[USER AGENT SERVICE]: Comparing {0} with login IP {1} and MyIP {2}; result is {3}",
+                                reportedIP, travel.ClientIPAddress, m_MyExternalIP, result);
 
             return result;
         }
@@ -704,7 +714,6 @@ namespace OpenSim.Services.HypergridService
             hgt.Data["GridExternalName"] = travel.GridExternalName;
             hgt.Data["ServiceToken"] = travel.ServiceToken;
             hgt.Data["ClientIPAddress"] = travel.ClientIPAddress;
-            hgt.Data["MyIPAddress"] = travel.MyIpAddress;
 
             m_Database.Store(hgt);
         }
@@ -719,7 +728,6 @@ namespace OpenSim.Services.HypergridService
         public string GridExternalName = string.Empty;
         public string ServiceToken = string.Empty;
         public string ClientIPAddress = string.Empty; // as seen from this user agent service
-        public string MyIpAddress = string.Empty; // the user agent service's external IP, as seen from the next gatekeeper
 
         public TravelingAgentInfo(HGTravelingData t)
         {
@@ -730,7 +738,6 @@ namespace OpenSim.Services.HypergridService
                 GridExternalName = t.Data["GridExternalName"];
                 ServiceToken = t.Data["ServiceToken"];
                 ClientIPAddress = t.Data["ClientIPAddress"];
-                MyIpAddress = t.Data["MyIPAddress"];
             }
         }
 
@@ -743,7 +750,6 @@ namespace OpenSim.Services.HypergridService
                 GridExternalName = old.GridExternalName;
                 ServiceToken = old.ServiceToken;
                 ClientIPAddress = old.ClientIPAddress;
-                MyIpAddress = old.MyIpAddress;
             }
         }
     }