Added simulation version compatibility check so that agents coming from 0.7.6 to a varregion running in 0.8 and above will be denied teleport, rather than be allowed and crash the viewer.

3 files changed, 32 insertions, 10 deletions

diff --git a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
index e583590..b157e6b 100644
--- a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
@@ -208,7 +208,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
         protected virtual void InitialiseCommon(IConfigSource source)
         {
             string transferVersionName = "SIMULATION";
-            float maxTransferVersion = 0.2f;
+            float maxTransferVersion = 0.3f;
 
             IConfig hypergridConfig = source.Configs["Hypergrid"];
             if (hypergridConfig != null)
@@ -760,8 +760,9 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
             string reason;
             string version;
+            string myversion = string.Format("{0}/{1}", OutgoingTransferVersionName, MaxOutgoingTransferVersion);
             if (!Scene.SimulationService.QueryAccess(
-                finalDestination, sp.ControllingClient.AgentId, homeURI, true, position, out version, out reason))
+                finalDestination, sp.ControllingClient.AgentId, homeURI, true, position, myversion, out version, out reason))
             {
                 sp.ControllingClient.SendTeleportFailed(reason);
 
@@ -833,7 +834,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             if (versionComponents.Length >= 2)
                 float.TryParse(versionComponents[1], out versionNumber);
 
-            if (versionNumber == 0.2f && MaxOutgoingTransferVersion >= versionNumber)
+            if (versionNumber >= 0.2f && MaxOutgoingTransferVersion >= versionNumber)
                 TransferAgent_V2(sp, agentCircuit, reg, finalDestination, endPoint, teleportFlags, oldRegionX, newRegionX, oldRegionY, newRegionY, version, out reason);
             else
                 TransferAgent_V1(sp, agentCircuit, reg, finalDestination, endPoint, teleportFlags, oldRegionX, newRegionX, oldRegionY, newRegionY, version, out reason);           
@@ -1509,8 +1510,9 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 }
 
                 // Check to see if we have access to the target region.
+                string myversion = string.Format("{0}/{1}", OutgoingTransferVersionName, MaxOutgoingTransferVersion);
                 if (neighbourRegion != null
-                    && !scene.SimulationService.QueryAccess(neighbourRegion, agentID, homeURI, false, newpos, out version, out failureReason))
+                    && !scene.SimulationService.QueryAccess(neighbourRegion, agentID, homeURI, false, newpos, myversion, out version, out failureReason))
                 {
                     // remember banned
                     m_bannedRegionCache.Add(neighbourRegion.RegionHandle, agentID);
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs
index 926ef05..e6de0b6 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/LocalSimulationConnector.cs
@@ -52,6 +52,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
         /// Currently valid versions are "SIMULATION/0.1" and "SIMULATION/0.2"
         /// </remarks>
         public string ServiceVersion { get; set; }
+        private float m_VersionNumber = 0.3f;
 
         /// <summary>
         /// Map region ID to scene.
@@ -84,15 +85,19 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
 
         public void InitialiseService(IConfigSource configSource)
         {
-            ServiceVersion = "SIMULATION/0.2";
+            ServiceVersion = "SIMULATION/0.3";
             IConfig config = configSource.Configs["SimulationService"];
             if (config != null)
             {
                 ServiceVersion = config.GetString("ConnectorProtocolVersion", ServiceVersion);
 
-                if (ServiceVersion != "SIMULATION/0.1" && ServiceVersion != "SIMULATION/0.2")
+                if (ServiceVersion != "SIMULATION/0.1" && ServiceVersion != "SIMULATION/0.2" && ServiceVersion != "SIMULATION/0.3")
                     throw new Exception(string.Format("Invalid ConnectorProtocolVersion {0}", ServiceVersion));
 
+                string[] versionComponents = ServiceVersion.Split(new char[] { '/' });
+                if (versionComponents.Length >= 2)
+                    float.TryParse(versionComponents[1], out m_VersionNumber);
+
                 m_log.InfoFormat(
                     "[LOCAL SIMULATION CONNECTOR]: Initialized with connector protocol version {0}", ServiceVersion);
             }
@@ -264,7 +269,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
             return true;
         }
 
-        public bool QueryAccess(GridRegion destination, UUID agentID, string agentHomeURI, bool viaTeleport, Vector3 position, out string version, out string reason)
+        public bool QueryAccess(GridRegion destination, UUID agentID, string agentHomeURI, bool viaTeleport, Vector3 position, string theirversion, out string version, out string reason)
         {
             reason = "Communications failure";
             version = ServiceVersion;
@@ -276,6 +281,21 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
 //                    m_log.DebugFormat(
 //                        "[LOCAL SIMULATION CONNECTOR]: Found region {0} {1} to send AgentUpdate",
 //                        s.RegionInfo.RegionName, destination.RegionHandle);
+                uint size = m_scenes[destination.RegionID].RegionInfo.RegionSizeX;
+
+                float theirVersionNumber = 0f;
+                string[] versionComponents = theirversion.Split(new char[] { '/' });
+                if (versionComponents.Length >= 2)
+                    float.TryParse(versionComponents[1], out theirVersionNumber);
+
+                // Var regions here, and the requesting simulator is in an older version.
+                // We will forbide this, because it crashes the viewers
+                if (theirVersionNumber < 0.3f && size > 256)
+                {
+                    reason = "Destination is a variable-sized region, and source is an old simulator. Consider upgrading.";
+                    m_log.DebugFormat("[LOCAL SIMULATION CONNECTOR]: Request to access this variable-sized region from {0} simulator was denied", theirVersionNumber);
+                    return false;
+                }
 
                 return m_scenes[destination.RegionID].QueryAccess(agentID, agentHomeURI, viaTeleport, position, out reason);
             }
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs
index 0444e49..6ecc327 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Simulation/RemoteSimulationConnector.cs
@@ -207,7 +207,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
             return m_remoteConnector.UpdateAgent(destination, cAgentData);
         }
 
-        public bool QueryAccess(GridRegion destination, UUID agentID, string agentHomeURI, bool viaTeleport, Vector3 position, out string version, out string reason)
+        public bool QueryAccess(GridRegion destination, UUID agentID, string agentHomeURI, bool viaTeleport, Vector3 position, string sversion, out string version, out string reason)
         {
             reason = "Communications failure";
             version = "Unknown";
@@ -216,12 +216,12 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation
                 return false;
 
             // Try local first
-            if (m_localBackend.QueryAccess(destination, agentID, agentHomeURI, viaTeleport, position, out version, out reason))
+            if (m_localBackend.QueryAccess(destination, agentID, agentHomeURI, viaTeleport, position, sversion, out version, out reason))
                 return true;
 
             // else do the remote thing
             if (!m_localBackend.IsLocalRegion(destination.RegionID))
-                return m_remoteConnector.QueryAccess(destination, agentID, agentHomeURI, viaTeleport, position, out version, out reason);
+                return m_remoteConnector.QueryAccess(destination, agentID, agentHomeURI, viaTeleport, position, sversion, out version, out reason);
 
             return false;
         }