1 files changed, 456 insertions, 0 deletions

diff --git a/OpenSim/Region/ClientStack/Linden/Caps/GetMeshModule.cs b/OpenSim/Region/ClientStack/Linden/Caps/GetMeshModule.cs
new file mode 100644
index 0000000..ba917e39
--- /dev/null
+++ b/OpenSim/Region/ClientStack/Linden/Caps/GetMeshModule.cs
@@ -0,0 +1,456 @@
+/*
+ * 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 OpenSimulator 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;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.Reflection;
+using System.IO;
+using System.Threading;
+using System.Web;
+using Mono.Addins;
+using OpenSim.Framework.Monitoring;
+using log4net;
+using Nini.Config;
+using OpenMetaverse;
+using OpenMetaverse.StructuredData;
+using OpenSim.Capabilities.Handlers;
+using OpenSim.Framework;
+using OpenSim.Framework.Servers;
+using OpenSim.Framework.Servers.HttpServer;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Services.Interfaces;
+using Caps = OpenSim.Framework.Capabilities.Caps;
+
+namespace OpenSim.Region.ClientStack.Linden
+{
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "GetMeshModule")]
+    public class GetMeshModule : INonSharedRegionModule
+    {
+//        private static readonly ILog m_log =
+//            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private Scene m_scene;
+        private IAssetService m_AssetService;
+        private bool m_Enabled = true;
+        private string m_URL;
+
+        private string m_URL2;
+        private string m_RedirectURL = null;
+        private string m_RedirectURL2 = null;
+
+        struct aPollRequest
+        {
+            public PollServiceMeshEventArgs thepoll;
+            public UUID reqID;
+            public Hashtable request;
+        }
+
+        public class aPollResponse
+        {
+            public Hashtable response;
+            public int bytes;
+            public int lod;
+        }
+
+
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private static GetMeshHandler m_getMeshHandler;
+
+        private IAssetService m_assetService = null;
+
+        private Dictionary<UUID, string> m_capsDict = new Dictionary<UUID, string>();
+        private static Thread[] m_workerThreads = null;
+        private static int m_NumberScenes = 0;
+        private static OpenSim.Framework.BlockingQueue<aPollRequest> m_queue =
+                new OpenSim.Framework.BlockingQueue<aPollRequest>();
+
+        private Dictionary<UUID, PollServiceMeshEventArgs> m_pollservices = new Dictionary<UUID, PollServiceMeshEventArgs>();
+
+
+        #region Region Module interfaceBase Members
+
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
+
+        public void Initialise(IConfigSource source)
+        {
+            IConfig config = source.Configs["ClientStack.LindenCaps"];
+            if (config == null)
+                return;
+
+            m_URL = config.GetString("Cap_GetMesh", string.Empty);
+            // Cap doesn't exist
+            if (m_URL != string.Empty)
+            {
+                m_Enabled = true;
+                m_RedirectURL = config.GetString("GetMeshRedirectURL");
+            }
+
+            m_URL2 = config.GetString("Cap_GetMesh2", string.Empty);
+            // Cap doesn't exist
+            if (m_URL2 != string.Empty)
+            {
+                m_Enabled = true;
+
+                m_RedirectURL2 = config.GetString("GetMesh2RedirectURL");
+            }
+        }
+
+        public void AddRegion(Scene pScene)
+        {
+            if (!m_Enabled)
+                return;
+
+            m_scene = pScene;
+
+            m_assetService = pScene.AssetService;
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            m_scene.EventManager.OnRegisterCaps -= RegisterCaps;
+            m_scene.EventManager.OnDeregisterCaps -= DeregisterCaps;
+            m_scene.EventManager.OnThrottleUpdate -= ThrottleUpdate;
+            m_NumberScenes--;
+            m_scene = null;
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            m_AssetService = m_scene.RequestModuleInterface<IAssetService>();
+            m_scene.EventManager.OnRegisterCaps += RegisterCaps;
+            // We'll reuse the same handler for all requests.
+            m_getMeshHandler = new GetMeshHandler(m_assetService);
+            m_scene.EventManager.OnDeregisterCaps += DeregisterCaps;
+            m_scene.EventManager.OnThrottleUpdate += ThrottleUpdate;
+
+            m_NumberScenes++;
+
+            if (m_workerThreads == null)
+            {
+                m_workerThreads = new Thread[2];
+
+                for (uint i = 0; i < 2; i++)
+                {
+                    m_workerThreads[i] = WorkManager.StartThread(DoMeshRequests,
+                            String.Format("GetMeshWorker{0}", i),
+                            ThreadPriority.Normal,
+                            true,
+                            false,
+                            null,
+                            int.MaxValue);
+                }
+            }
+        }
+
+        public void Close()
+        {
+            if(m_NumberScenes <= 0 && m_workerThreads != null)
+            {
+                m_log.DebugFormat("[GetMeshModule] Closing");
+                foreach (Thread t in m_workerThreads)
+                    Watchdog.AbortThread(t.ManagedThreadId);
+                // This will fail on region shutdown. Its harmless.
+                // Prevent red ink.
+                try
+                {
+                    m_queue.Clear();
+                }
+                catch {}
+            }
+        }
+
+        public string Name { get { return "GetMeshModule"; } }
+
+        #endregion
+
+        private static void DoMeshRequests()
+        {
+            while(true)
+            {
+                aPollRequest poolreq = m_queue.Dequeue(4500);
+                Watchdog.UpdateThread();
+                if(m_NumberScenes <= 0)
+                    return;
+                if(poolreq.reqID != UUID.Zero)
+                    poolreq.thepoll.Process(poolreq);
+            }
+        }
+
+        // Now we know when the throttle is changed by the client in the case of a root agent or by a neighbor region in the case of a child agent.
+        public void ThrottleUpdate(ScenePresence p)
+        {
+            UUID user = p.UUID;
+            int imagethrottle = p.ControllingClient.GetAgentThrottleSilent((int)ThrottleOutPacketType.Asset);
+            PollServiceMeshEventArgs args;
+            if (m_pollservices.TryGetValue(user, out args))
+            {
+                args.UpdateThrottle(imagethrottle);
+            }
+        }
+
+        private class PollServiceMeshEventArgs : PollServiceEventArgs
+        {
+            private List<Hashtable> requests =
+                    new List<Hashtable>();
+            private Dictionary<UUID, aPollResponse> responses =
+                    new Dictionary<UUID, aPollResponse>();
+
+            private Scene m_scene;
+            private MeshCapsDataThrottler m_throttler;
+            public PollServiceMeshEventArgs(string uri, UUID pId, Scene scene) :
+                base(null, uri, null, null, null, pId, int.MaxValue)
+            {
+                m_scene = scene;
+                m_throttler = new MeshCapsDataThrottler(100000);
+                // x is request id, y is userid
+                HasEvents = (x, y) =>
+                {
+                    lock (responses)
+                    {
+                        bool ret = m_throttler.hasEvents(x, responses);
+                        return ret;
+
+                    }
+                };
+                GetEvents = (x, y) =>
+                {
+                    lock (responses)
+                    {
+                        try
+                        {
+                            return responses[x].response;
+                        }
+                        finally
+                        {
+                            responses.Remove(x);
+                            m_throttler.PassTime();
+                        }
+                    }
+                };
+                // x is request id, y is request data hashtable
+                Request = (x, y) =>
+                {
+                    aPollRequest reqinfo = new aPollRequest();
+                    reqinfo.thepoll = this;
+                    reqinfo.reqID = x;
+                    reqinfo.request = y;
+
+                    m_queue.Enqueue(reqinfo);
+                    m_throttler.PassTime();
+                };
+
+                // this should never happen except possible on shutdown
+                NoEvents = (x, y) =>
+                {
+                    /*
+                                        lock (requests)
+                                        {
+                                            Hashtable request = requests.Find(id => id["RequestID"].ToString() == x.ToString());
+                                            requests.Remove(request);
+                                        }
+                    */
+                    Hashtable response = new Hashtable();
+
+                    response["int_response_code"] = 500;
+                    response["str_response_string"] = "Script timeout";
+                    response["content_type"] = "text/plain";
+                    response["keepalive"] = false;
+                    response["reusecontext"] = false;
+
+                    return response;
+                };
+            }
+
+            public void Process(aPollRequest requestinfo)
+            {
+                Hashtable response;
+
+                UUID requestID = requestinfo.reqID;
+
+                if(m_scene.ShuttingDown)
+                    return;
+
+                // If the avatar is gone, don't bother to get the texture
+                if (m_scene.GetScenePresence(Id) == null)
+                {
+                    response = new Hashtable();
+
+                    response["int_response_code"] = 500;
+                    response["str_response_string"] = "Script timeout";
+                    response["content_type"] = "text/plain";
+                    response["keepalive"] = false;
+                    response["reusecontext"] = false;
+
+                    lock (responses)
+                        responses[requestID] = new aPollResponse() { bytes = 0, response = response, lod = 0 };
+
+                    return;
+                }
+
+                response = m_getMeshHandler.Handle(requestinfo.request);
+                lock (responses)
+                {
+                    responses[requestID] = new aPollResponse()
+                    {
+                        bytes = (int)response["int_bytes"],
+                        lod = (int)response["int_lod"],
+                        response = response
+                    };
+
+                }
+                m_throttler.PassTime();
+            }
+
+            internal void UpdateThrottle(int pthrottle)
+            {
+                int tmp = 2 * pthrottle;
+                if(tmp < 10000)
+                    tmp = 10000;
+                m_throttler.ThrottleBytes = tmp;
+            }
+        }
+
+        public void RegisterCaps(UUID agentID, Caps caps)
+        {
+//            UUID capID = UUID.Random();
+            if (m_URL == "localhost")
+            {
+                string capUrl = "/CAPS/" + UUID.Random() + "/";
+
+                // Register this as a poll service
+                PollServiceMeshEventArgs args = new PollServiceMeshEventArgs(capUrl, agentID, m_scene);
+
+                args.Type = PollServiceEventArgs.EventType.Mesh;
+                MainServer.Instance.AddPollServiceHTTPHandler(capUrl, args);
+
+                string hostName = m_scene.RegionInfo.ExternalHostName;
+                uint port = (MainServer.Instance == null) ? 0 : MainServer.Instance.Port;
+                string protocol = "http";
+
+                if (MainServer.Instance.UseSSL)
+                {
+                    hostName = MainServer.Instance.SSLCommonName;
+                    port = MainServer.Instance.SSLPort;
+                    protocol = "https";
+                }
+                caps.RegisterHandler("GetMesh", String.Format("{0}://{1}:{2}{3}", protocol, hostName, port, capUrl));
+                m_pollservices[agentID] = args;
+                m_capsDict[agentID] = capUrl;
+            }
+            else
+            {
+                caps.RegisterHandler("GetMesh", m_URL);
+            }
+        }
+
+        private void DeregisterCaps(UUID agentID, Caps caps)
+        {
+            string capUrl;
+            PollServiceMeshEventArgs args;
+            if (m_capsDict.TryGetValue(agentID, out capUrl))
+            {
+                MainServer.Instance.RemoveHTTPHandler("", capUrl);
+                m_capsDict.Remove(agentID);
+            }
+            if (m_pollservices.TryGetValue(agentID, out args))
+            {
+                m_pollservices.Remove(agentID);
+            }
+        }
+
+        internal sealed class MeshCapsDataThrottler
+        {
+            private double lastTimeElapsed = 0;
+            private double BytesSent = 0;
+
+            public MeshCapsDataThrottler(int pBytes)
+            {
+                if(pBytes < 10000)
+                    pBytes = 10000;
+                ThrottleBytes = pBytes;
+                lastTimeElapsed = Util.GetTimeStampMS();
+            }
+
+            public bool hasEvents(UUID key, Dictionary<UUID, aPollResponse> responses)
+            {
+                PassTime();
+                // Note, this is called IN LOCK
+                bool haskey = responses.ContainsKey(key);
+
+                if (!haskey)
+                {
+                    return false;
+                }
+                aPollResponse response;
+                if (responses.TryGetValue(key, out response))
+                {
+                    // Normal
+                    if (BytesSent <= ThrottleBytes)
+                    {
+                        BytesSent += response.bytes;
+                        return true;
+                    }
+                    else
+                    {
+                        return false;
+                    }
+                }
+                return haskey;
+            }
+
+            public void PassTime()
+            {
+                double currenttime = Util.GetTimeStampMS();
+                double timeElapsed = currenttime - lastTimeElapsed;
+                if(timeElapsed < 50.0)
+                    return;
+                int add = (int)(ThrottleBytes * timeElapsed * 0.001);
+                if (add >= 1000)
+                {
+                    lastTimeElapsed = currenttime;
+                    BytesSent -= add;
+                    if (BytesSent < 0) BytesSent = 0;
+                }
+            }
+
+            public int ThrottleBytes;
+        }
+    }
+}