test: Extend malformed packet test to actually check that a valid packet can get through after the malformed ones have been sent

OpenSim/Framework/ClientManager.cs

@@ -97,8 +97,10 @@ namespace OpenSim.Framework
         {
             IClientAPI client;
             bool tryGetRet = false;
+            
             lock (m_clients)
                 tryGetRet = m_clients.TryGetValue(circuitCode, out client);
+            
             if (tryGetRet)
             {
                 client.InPacket(packet);

OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs

@@ -4804,10 +4804,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         break;
                     case PacketType.ObjectName:
                         ObjectNamePacket objName = (ObjectNamePacket)Pack;
-
+                    
                         handlerObjectName = null;
                         for (int i = 0; i < objName.ObjectData.Length; i++)
-                        {
+                        {                        
                             handlerObjectName = OnObjectName;
                             if (handlerObjectName != null)
                             {

OpenSim/Region/ClientStack/LindenUDP/Tests/BasicCircuitTests.cs

@@ -26,9 +26,9 @@
  */
 
 using System.Net;
-//using System.Threading;
 using log4net;
 using NUnit.Framework;
+using NUnit.Framework.SyntaxHelpers;
 using OpenMetaverse;
 using OpenMetaverse.Packets;
 using OpenSim.Framework;
@@ -60,9 +60,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
         /// <summary>
         /// Add a client for testing
         /// </summary>
+        /// <param name="scene"></param>
         /// <param name="testLLUDPServer"></param>
+        /// <param name="testPacketServer"></param>
         /// <param name="acm">Agent circuit manager used in setting up the stack</param>        
-        protected void SetupStack(out TestLLUDPServer testLLUDPServer, out AgentCircuitManager acm)
+        protected void SetupStack(
+            IScene scene, out TestLLUDPServer testLLUDPServer, out TestLLPacketServer testPacketServer, 
+            out AgentCircuitManager acm)
         {
             ClientStackUserSettings userSettings = new ClientStackUserSettings();
             testLLUDPServer = new TestLLUDPServer();             
@@ -70,8 +74,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
                                     
             uint port = 666;            
             testLLUDPServer.Initialise(null, ref port, 0, false, userSettings, null, acm);
-            new LLPacketServer(testLLUDPServer, userSettings);
+            testPacketServer = new TestLLPacketServer(testLLUDPServer, userSettings);
-            testLLUDPServer.LocalScene = new MockScene();            
+            testLLUDPServer.LocalScene = scene;            
         }
         
         /// <summary>
@@ -117,8 +121,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
             UUID mySessionUuid = UUID.Parse("00000000-0000-0000-0000-000000000002");
             
             TestLLUDPServer testLLUDPServer;
+            TestLLPacketServer testLLPacketServer;
             AgentCircuitManager acm;
-            SetupStack(out testLLUDPServer, out acm);
+            SetupStack(new MockScene(), out testLLUDPServer, out testLLPacketServer, out acm);
             
             AgentCircuitData acd = new AgentCircuitData();
             acd.AgentID = myAgentUuid;
@@ -160,8 +165,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
             uint myCircuitCode = 123457;
             
             TestLLUDPServer testLLUDPServer;
+            TestLLPacketServer testLLPacketServer;
             AgentCircuitManager acm;
-            SetupStack(out testLLUDPServer, out acm);            
+            SetupStack(new MockScene(), out testLLUDPServer, out testLLPacketServer, out acm);            
             AddClient(myCircuitCode, new IPEndPoint(IPAddress.Loopback, 1000), testLLUDPServer, acm);
             
             testLLUDPServer.RemoveClientCircuit(myCircuitCode);            
@@ -179,20 +185,41 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
         public void TestMalformedPacketSend()
         {
             uint myCircuitCode = 123458;
-            EndPoint testEp = new IPEndPoint(IPAddress.Loopback, 1001);           
+            EndPoint testEp = new IPEndPoint(IPAddress.Loopback, 1001);
+            MockScene scene = new MockScene(); 
             
             TestLLUDPServer testLLUDPServer;
+            TestLLPacketServer testLLPacketServer;
             AgentCircuitManager acm;
-            SetupStack(out testLLUDPServer, out acm);            
+            SetupStack(scene, out testLLUDPServer, out testLLPacketServer, out acm);            
             AddClient(myCircuitCode, testEp, testLLUDPServer, acm);  
-            
+
             byte[] data = new byte[] { 0x01, 0x02, 0x03, 0x04 };
-            
+
+            // Send two garbled 'packets' in succession
+            testLLUDPServer.LoadReceive(data, testEp);
             testLLUDPServer.LoadReceive(data, testEp);
             testLLUDPServer.ReceiveData(null); 
             
             // Check that we are still here
             Assert.IsTrue(testLLUDPServer.HasCircuit(myCircuitCode));
+            Assert.That(testLLPacketServer.GetTotalPacketsReceived(), Is.EqualTo(0));
+            
+            // Check that sending a valid packet to same circuit still succeeds
+            Assert.That(scene.ObjectNameCallsReceived, Is.EqualTo(0));
+
+            ObjectNamePacket onp = new ObjectNamePacket();
+            ObjectNamePacket.ObjectDataBlock odb = new ObjectNamePacket.ObjectDataBlock();
+            odb.LocalID = 1;
+            odb.Name = Utils.StringToBytes("helloooo");
+            onp.ObjectData = new ObjectNamePacket.ObjectDataBlock[] { odb };
+            onp.Header.Zerocoded = false;
+            
+            testLLUDPServer.LoadReceive(onp, testEp);
+            testLLUDPServer.ReceiveData(null);
+            
+            Assert.That(testLLPacketServer.GetTotalPacketsReceived(), Is.EqualTo(1));  
+            Assert.That(testLLPacketServer.GetPacketsReceivedFor(PacketType.ObjectName), Is.EqualTo(1));
         }
     }
 }

OpenSim/Region/ClientStack/LindenUDP/Tests/MockScene.cs

@@ -36,6 +36,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
     /// </summary>
     public class MockScene : SceneBase
     {
+        public int ObjectNameCallsReceived
+        {
+            get { return m_objectNameCallsReceived; }
+        }
+        protected int m_objectNameCallsReceived;
+        
         public MockScene()
         {
             m_regInfo = new RegionInfo(1000, 1000, null, null);
@@ -44,9 +50,22 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
         
         public override void Update() {}
         public override void LoadWorldMap() {}
-        public override void AddNewClient(IClientAPI client, bool child) {}
+        
+        public override void AddNewClient(IClientAPI client, bool child) 
+        {
+            client.OnObjectName += RecordObjectNameCall;
+        }
+        
         public override void RemoveClient(UUID agentID) {}
         public override void CloseAllAgents(uint circuitcode) {}
         public override bool OtherRegionUp(RegionInfo thisRegion) { return false; }
+            
+        /// <summary>
+        /// Doesn't really matter what the call is - we're using this to test that a packet has actually been received
+        /// </summary>
+        protected void RecordObjectNameCall(IClientAPI remoteClient, uint localID, string message)
+        {
+            m_objectNameCallsReceived++;
+        }
     }
 }

OpenSim/Region/ClientStack/LindenUDP/Tests/TestLLPacketServer.cs

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System.Collections.Generic;
+using OpenMetaverse;
+using OpenMetaverse.Packets;
+using OpenSim.Region.ClientStack.LindenUDP;
+
+namespace OpenSim.Region.ClientStack.LindenUDP.Tests
+{ 
+    public class TestLLPacketServer : LLPacketServer
+    {        
+        /// <summary>
+        /// Record counts of packets received
+        /// </summary>
+        protected Dictionary<PacketType, int> m_packetsReceived = new Dictionary<PacketType, int>();
+        
+        public TestLLPacketServer(ILLClientStackNetworkHandler networkHandler, ClientStackUserSettings userSettings)
+            : base(networkHandler, userSettings)
+        {}
+        
+        public override void InPacket(uint circuitCode, Packet packet)
+        {
+            base.InPacket(circuitCode, packet);
+            
+            if (m_packetsReceived.ContainsKey(packet.Type))
+                m_packetsReceived[packet.Type]++;
+            else
+                m_packetsReceived[packet.Type] = 1;
+        }    
+        
+        public int GetTotalPacketsReceived()
+        {
+            int totalCount = 0;
+            
+            foreach (int count in m_packetsReceived.Values)
+                totalCount += count;
+            
+            return totalCount;
+        }
+        
+        public int GetPacketsReceivedFor(PacketType packetType)
+        {
+            if (m_packetsReceived.ContainsKey(packetType))
+                return m_packetsReceived[packetType];
+            else
+                return 0;
+        }
+    }
+}

OpenSim/Region/ClientStack/LindenUDP/Tests/TestLLUDPServer.cs

@@ -91,12 +91,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
         }
         
         /// <summary>
-        /// Calls the protected asynchronous result method
+        /// Calls the protected asynchronous result method.  This fires out all data chunks currently queued for send
         /// </summary>
         /// <param name="result"></param>
         public void ReceiveData(IAsyncResult result)
         {
-            OnReceivedData(result);
+            while (m_chunksToLoad.Count > 0)
+                OnReceivedData(result);
         }                
         
         /// <summary>

OpenSim/Region/Environment/Scenes/Scene.cs

@@ -2185,11 +2185,6 @@ namespace OpenSim.Region.Environment.Scenes
 
         #region Add/Remove Avatar Methods
 
-        /// <summary>
-        /// Register the new client with the scene
-        /// </summary>
-        /// <param name="client"></param
-        /// <param name="child"></param>
         public override void AddNewClient(IClientAPI client, bool child)
         {
             SubscribeToClientEvents(client);

OpenSim/Region/Environment/Scenes/SceneBase.cs

@@ -130,10 +130,9 @@ namespace OpenSim.Region.Environment.Scenes
         #region Add/Remove Agent/Avatar
 
         /// <summary>
-        ///
+        /// Register the new client with the scene
         /// </summary>
-        /// <param name="remoteClient"></param>
+        /// <param name="client"></param
-        /// <param name="agentID"></param>
         /// <param name="child"></param>
         public abstract void AddNewClient(IClientAPI client, bool child);