Initial update to OpenSim 0.8.2.1 source code.

1 files changed, 1203 insertions, 0 deletions

diff --git a/OpenSim/Region/OptionalModules/UserStatistics/WebStatsModule.cs b/OpenSim/Region/OptionalModules/UserStatistics/WebStatsModule.cs
new file mode 100644
index 0000000..bcb6361
--- /dev/null
+++ b/OpenSim/Region/OptionalModules/UserStatistics/WebStatsModule.cs
@@ -0,0 +1,1203 @@
+/*
+ * 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.IO;
+using System.Net; // to be used for REST-->Grid shortly
+using System.Reflection;
+using System.Text;
+using System.Threading;
+using log4net;
+using Nini.Config;
+using OpenMetaverse;
+using OpenMetaverse.StructuredData;
+using OpenSim.Framework;
+using OpenSim.Framework.Servers;
+using OpenSim.Framework.Servers.HttpServer;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+using Mono.Data.SqliteClient;
+using Mono.Addins;
+
+using Caps = OpenSim.Framework.Capabilities.Caps;
+
+using OSD = OpenMetaverse.StructuredData.OSD;
+using OSDMap = OpenMetaverse.StructuredData.OSDMap;
+
+namespace OpenSim.Region.UserStatistics
+{
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "WebStatsModule")]
+    public class WebStatsModule : ISharedRegionModule
+    {
+        private static readonly ILog m_log =
+            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        
+        private static SqliteConnection dbConn;
+
+        /// <summary>
+        /// User statistics sessions keyed by agent ID
+        /// </summary>
+        private Dictionary<UUID, UserSession> m_sessions = new Dictionary<UUID, UserSession>();
+
+        private List<Scene> m_scenes = new List<Scene>();
+        private Dictionary<string, IStatsController> reports = new Dictionary<string, IStatsController>();
+        private Dictionary<UUID, USimStatsData> m_simstatsCounters = new Dictionary<UUID, USimStatsData>(); 
+        private const int updateStatsMod = 6;
+        private int updateLogMod = 1;
+        private volatile int updateLogCounter = 0;
+        private volatile int concurrencyCounter = 0;
+        private bool enabled = false;
+        private string m_loglines = String.Empty;
+        private volatile int lastHit = 12000;
+
+        #region ISharedRegionModule
+
+        public virtual void Initialise(IConfigSource config)
+        {
+            IConfig cnfg = config.Configs["WebStats"];
+
+            if (cnfg != null)
+                enabled = cnfg.GetBoolean("enabled", false);
+        }
+
+        public virtual void PostInitialise()
+        {
+            if (!enabled)
+                return;
+
+            if (Util.IsWindows())
+                Util.LoadArchSpecificWindowsDll("sqlite3.dll");
+
+            //IConfig startupConfig = config.Configs["Startup"];
+
+            dbConn = new SqliteConnection("URI=file:LocalUserStatistics.db,version=3");
+            dbConn.Open();
+            CreateTables(dbConn);
+
+            Prototype_distributor protodep = new Prototype_distributor();
+            Updater_distributor updatedep = new Updater_distributor();
+            ActiveConnectionsAJAX ajConnections = new ActiveConnectionsAJAX();
+            SimStatsAJAX ajSimStats = new SimStatsAJAX();
+            LogLinesAJAX ajLogLines = new LogLinesAJAX();
+            Default_Report defaultReport = new Default_Report();
+            Clients_report clientReport = new Clients_report();
+            Sessions_Report sessionsReport = new Sessions_Report();
+
+            reports.Add("prototype.js", protodep);
+            reports.Add("updater.js", updatedep);
+            reports.Add("activeconnectionsajax.html", ajConnections);
+            reports.Add("simstatsajax.html", ajSimStats);
+            reports.Add("activelogajax.html", ajLogLines);
+            reports.Add("default.report", defaultReport);
+            reports.Add("clients.report", clientReport);
+            reports.Add("sessions.report", sessionsReport);
+
+            reports.Add("sim.css", new Prototype_distributor("sim.css"));
+            reports.Add("sim.html", new Prototype_distributor("sim.html"));
+            reports.Add("jquery.js", new Prototype_distributor("jquery.js"));
+
+            ////
+            // Add Your own Reports here (Do Not Modify Lines here Devs!)
+            ////
+
+            ////
+            // End Own reports section
+            ////
+
+            MainServer.Instance.AddHTTPHandler("/SStats/", HandleStatsRequest);
+            MainServer.Instance.AddHTTPHandler("/CAPS/VS/", HandleUnknownCAPSRequest);
+        }
+
+        public virtual void AddRegion(Scene scene)
+        {
+            if (!enabled)
+                return;
+
+            lock (m_scenes)
+            {
+                m_scenes.Add(scene);
+                updateLogMod = m_scenes.Count * 2;
+
+                m_simstatsCounters.Add(scene.RegionInfo.RegionID, new USimStatsData(scene.RegionInfo.RegionID));
+
+                scene.EventManager.OnRegisterCaps += OnRegisterCaps;
+                scene.EventManager.OnDeregisterCaps += OnDeRegisterCaps;
+                scene.EventManager.OnClientClosed += OnClientClosed;
+                scene.EventManager.OnMakeRootAgent += OnMakeRootAgent;
+                scene.StatsReporter.OnSendStatsResult += ReceiveClassicSimStatsPacket;
+            }
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!enabled)
+                return;
+
+            lock (m_scenes)
+            {
+                m_scenes.Remove(scene);
+                updateLogMod = m_scenes.Count * 2;
+                m_simstatsCounters.Remove(scene.RegionInfo.RegionID);
+            }
+        }
+
+        public virtual void Close()
+        {
+            if (!enabled)
+                return;
+
+            dbConn.Close();
+            dbConn.Dispose();
+            m_sessions.Clear();
+            m_scenes.Clear();
+            reports.Clear();
+            m_simstatsCounters.Clear();
+        }
+
+        public virtual string Name
+        {
+            get { return "ViewerStatsModule"; }
+        }
+
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
+
+        #endregion
+
+        private void ReceiveClassicSimStatsPacket(SimStats stats)
+        {
+            if (!enabled)
+                return;
+
+            try
+            {
+                // Ignore the update if there's a report running right now
+                // ignore the update if there hasn't been a hit in 30 seconds.
+                if (concurrencyCounter > 0 || System.Environment.TickCount - lastHit > 30000)
+                    return;
+
+                // We will conduct this under lock so that fields such as updateLogCounter do not potentially get
+                // confused if a scene is removed.
+                // XXX: Possibly the scope of this lock could be reduced though it's not critical.
+                lock (m_scenes)
+                {
+                    if (updateLogMod != 0 && updateLogCounter++ % updateLogMod == 0)
+                    {
+                        m_loglines = readLogLines(10);
+
+                        if (updateLogCounter > 10000) 
+                            updateLogCounter = 1;
+                    }
+
+                    USimStatsData ss = m_simstatsCounters[stats.RegionUUID];
+
+                    if ((++ss.StatsCounter % updateStatsMod) == 0)
+                    {
+                        ss.ConsumeSimStats(stats);
+                    }
+                }
+            } 
+            catch (KeyNotFoundException)
+            {
+            }
+        }
+        
+        private Hashtable HandleUnknownCAPSRequest(Hashtable request)
+        {
+            //string regpath = request["uri"].ToString();
+            int response_code = 200;
+            string contenttype = "text/html";
+            UpdateUserStats(ParseViewerStats(request["body"].ToString(), UUID.Zero), dbConn);
+            Hashtable responsedata = new Hashtable();
+
+            responsedata["int_response_code"] = response_code;
+            responsedata["content_type"] = contenttype;
+            responsedata["keepalive"] = false;
+            responsedata["str_response_string"] = string.Empty;
+            return responsedata;
+        }
+
+        private Hashtable HandleStatsRequest(Hashtable request)
+        {
+            lastHit = System.Environment.TickCount;
+            Hashtable responsedata = new Hashtable();
+            string regpath = request["uri"].ToString();
+            int response_code = 404;
+            string contenttype = "text/html";
+            bool jsonFormatOutput = false;
+            
+            string strOut = string.Empty;
+
+            // The request patch should be "/SStats/reportName" where 'reportName'
+            // is one of the names added to the 'reports' hashmap.
+            regpath = regpath.Remove(0, 8);
+            if (regpath.Length == 0) regpath = "default.report";
+            if (reports.ContainsKey(regpath))
+            {
+                IStatsController rep = reports[regpath];
+                Hashtable repParams = new Hashtable();
+
+                if (request.ContainsKey("json"))
+                    jsonFormatOutput = true;
+
+                if (request.ContainsKey("requestvars"))
+                    repParams["RequestVars"] = request["requestvars"];
+                else
+                    repParams["RequestVars"] = new Hashtable();
+
+                if (request.ContainsKey("querystringkeys"))
+                    repParams["QueryStringKeys"] = request["querystringkeys"];
+                else
+                    repParams["QueryStringKeys"] = new string[0];
+
+
+                repParams["DatabaseConnection"] = dbConn;
+                repParams["Scenes"] = m_scenes;
+                repParams["SimStats"] = m_simstatsCounters;
+                repParams["LogLines"] = m_loglines;
+                repParams["Reports"] = reports;
+                
+                concurrencyCounter++;
+
+                if (jsonFormatOutput) 
+                {
+                    strOut = rep.RenderJson(rep.ProcessModel(repParams));
+                    contenttype = "text/json";
+                }
+                else 
+                {
+                    strOut = rep.RenderView(rep.ProcessModel(repParams));
+                }
+
+                if (regpath.EndsWith("js"))
+                {
+                    contenttype = "text/javascript";
+                }
+
+                if (regpath.EndsWith("css"))
+                {
+                    contenttype = "text/css";
+                }
+
+                concurrencyCounter--;
+                
+                response_code = 200;
+            }
+            else
+            {
+                strOut = MainServer.Instance.GetHTTP404("");
+            }
+
+            responsedata["int_response_code"] = response_code;
+            responsedata["content_type"] = contenttype;
+            responsedata["keepalive"] = false;
+            responsedata["str_response_string"] = strOut;
+
+            return responsedata;
+        }
+
+        private void CreateTables(SqliteConnection db)
+        {
+            using (SqliteCommand createcmd = new SqliteCommand(SQL_STATS_TABLE_CREATE, db))
+            {
+                createcmd.ExecuteNonQuery();
+            }
+        }
+
+        private void OnRegisterCaps(UUID agentID, Caps caps)
+        {
+//            m_log.DebugFormat("[WEB STATS MODULE]: OnRegisterCaps: agentID {0} caps {1}", agentID, caps);
+
+            string capsPath = "/CAPS/VS/" + UUID.Random();
+            caps.RegisterHandler(
+                "ViewerStats",
+                new RestStreamHandler(
+                    "POST",
+                    capsPath,
+                    (request, path, param, httpRequest, httpResponse)
+                        => ViewerStatsReport(request, path, param, agentID, caps),
+                    "ViewerStats",
+                    agentID.ToString()));
+        }
+
+        private void OnDeRegisterCaps(UUID agentID, Caps caps)
+        {
+        }
+
+        protected virtual void AddEventHandlers()
+        {
+            lock (m_scenes)
+            {
+                updateLogMod = m_scenes.Count * 2;
+                foreach (Scene scene in m_scenes)
+                {
+                    scene.EventManager.OnRegisterCaps += OnRegisterCaps;
+                    scene.EventManager.OnDeregisterCaps += OnDeRegisterCaps;
+                    scene.EventManager.OnClientClosed += OnClientClosed;
+                    scene.EventManager.OnMakeRootAgent += OnMakeRootAgent;
+                }
+            }
+        }
+
+        private void OnMakeRootAgent(ScenePresence agent)
+        {
+//            m_log.DebugFormat(
+//                "[WEB STATS MODULE]: Looking for session {0} for {1} in {2}",
+//                agent.ControllingClient.SessionId, agent.Name, agent.Scene.Name);
+
+            lock (m_sessions)
+            {
+                UserSession uid;
+
+                if (!m_sessions.ContainsKey(agent.UUID))
+                {
+                    UserSessionData usd = UserSessionUtil.newUserSessionData();
+                    uid = new UserSession();
+                    uid.name_f = agent.Firstname;
+                    uid.name_l = agent.Lastname;
+                    uid.session_data = usd;
+
+                    m_sessions.Add(agent.UUID, uid);
+                }
+                else
+                {
+                    uid = m_sessions[agent.UUID];
+                }
+
+                uid.region_id = agent.Scene.RegionInfo.RegionID;
+                uid.session_id = agent.ControllingClient.SessionId;
+            }
+        }
+
+        private void OnClientClosed(UUID agentID, Scene scene)
+        {
+            lock (m_sessions)
+            {
+                if (m_sessions.ContainsKey(agentID) && m_sessions[agentID].region_id == scene.RegionInfo.RegionID)
+                {
+                    m_sessions.Remove(agentID);
+                }
+            }
+        }
+
+        private string readLogLines(int amount)
+        {
+            Encoding encoding = Encoding.ASCII;
+            int sizeOfChar = encoding.GetByteCount("\n");
+            byte[] buffer = encoding.GetBytes("\n");
+            string logfile = Util.logFile();
+            FileStream fs = new FileStream(logfile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+            Int64 tokenCount = 0;
+            Int64 endPosition = fs.Length / sizeOfChar;
+
+            for (Int64 position = sizeOfChar; position < endPosition; position += sizeOfChar)
+            {
+                fs.Seek(-position, SeekOrigin.End);
+                fs.Read(buffer, 0, buffer.Length);
+
+                if (encoding.GetString(buffer) == "\n")
+                {
+                    tokenCount++;
+                    if (tokenCount == amount)
+                    {
+                        byte[] returnBuffer = new byte[fs.Length - fs.Position];
+                        fs.Read(returnBuffer, 0, returnBuffer.Length);
+                        fs.Close();
+                        fs.Dispose();
+                        return encoding.GetString(returnBuffer);
+                    }
+                }
+            }
+
+            // handle case where number of tokens in file is less than numberOfTokens
+            fs.Seek(0, SeekOrigin.Begin);
+            buffer = new byte[fs.Length];
+            fs.Read(buffer, 0, buffer.Length);
+            fs.Close();
+            fs.Dispose();
+            return encoding.GetString(buffer);
+        }
+
+        /// <summary>
+        /// Callback for a viewerstats cap
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="path"></param>
+        /// <param name="param"></param>
+        /// <param name="agentID"></param>
+        /// <param name="caps"></param>
+        /// <returns></returns>
+        private string ViewerStatsReport(string request, string path, string param,
+                                      UUID agentID, Caps caps)
+        {
+//            m_log.DebugFormat("[WEB STATS MODULE]: Received viewer starts report from {0}", agentID);
+ 
+            UpdateUserStats(ParseViewerStats(request, agentID), dbConn);
+
+            return String.Empty;
+        }
+
+        private UserSession ParseViewerStats(string request, UUID agentID)
+        {
+            UserSession uid = new UserSession();
+            UserSessionData usd;
+            OSD message = OSDParser.DeserializeLLSDXml(request);
+            OSDMap mmap;
+
+            lock (m_sessions)
+            {
+                if (agentID != UUID.Zero)
+                {
+                    if (!m_sessions.ContainsKey(agentID))
+                    {
+                        m_log.WarnFormat("[WEB STATS MODULE]: no session for stat disclosure for agent {0}", agentID);
+                        return new UserSession();
+                    }
+
+                    uid = m_sessions[agentID];
+
+//                    m_log.DebugFormat("[WEB STATS MODULE]: Got session {0} for {1}", uid.session_id, agentID);
+                }
+                else
+                {
+                    // parse through the beginning to locate the session
+                    if (message.Type != OSDType.Map)
+                        return new UserSession();
+
+                    mmap = (OSDMap)message;
+                    {
+                        UUID sessionID = mmap["session_id"].AsUUID();
+
+                        if (sessionID == UUID.Zero)
+                            return new UserSession();
+
+
+                        // search through each session looking for the owner
+                        foreach (UUID usersessionid in m_sessions.Keys)
+                        {
+                            // got it!
+                            if (m_sessions[usersessionid].session_id == sessionID)
+                            {
+                                agentID = usersessionid;
+                                uid = m_sessions[usersessionid];
+                                break;
+                            }
+
+                        }
+
+                        // can't find a session
+                        if (agentID == UUID.Zero)
+                        {
+                            return new UserSession();
+                        }
+                    }
+                }
+            }
+           
+            usd = uid.session_data;
+
+            if (message.Type != OSDType.Map)
+                return new UserSession();
+
+            mmap = (OSDMap)message;
+            {
+                if (mmap["agent"].Type != OSDType.Map)
+                    return new UserSession();
+                OSDMap agent_map = (OSDMap)mmap["agent"];
+                usd.agent_id = agentID;
+                usd.name_f = uid.name_f;
+                usd.name_l = uid.name_l;
+                usd.region_id = uid.region_id;
+                usd.a_language = agent_map["language"].AsString();
+                usd.mem_use = (float)agent_map["mem_use"].AsReal();
+                usd.meters_traveled = (float)agent_map["meters_traveled"].AsReal();
+                usd.regions_visited = agent_map["regions_visited"].AsInteger();
+                usd.run_time = (float)agent_map["run_time"].AsReal();
+                usd.start_time = (float)agent_map["start_time"].AsReal();
+                usd.client_version = agent_map["version"].AsString();
+
+                UserSessionUtil.UpdateMultiItems(ref usd, agent_map["agents_in_view"].AsInteger(),
+                                                 (float)agent_map["ping"].AsReal(),
+                                                 (float)agent_map["sim_fps"].AsReal(),
+                                                 (float)agent_map["fps"].AsReal());
+
+                if (mmap["downloads"].Type != OSDType.Map)
+                    return new UserSession();
+                OSDMap downloads_map = (OSDMap)mmap["downloads"];
+                usd.d_object_kb = (float)downloads_map["object_kbytes"].AsReal();
+                usd.d_texture_kb = (float)downloads_map["texture_kbytes"].AsReal();
+                usd.d_world_kb = (float)downloads_map["workd_kbytes"].AsReal();
+
+//                m_log.DebugFormat("[WEB STATS MODULE]: mmap[\"session_id\"] = [{0}]", mmap["session_id"].AsUUID());
+
+                usd.session_id = mmap["session_id"].AsUUID();
+
+                if (mmap["system"].Type != OSDType.Map)
+                    return new UserSession();
+                OSDMap system_map = (OSDMap)mmap["system"];
+
+                usd.s_cpu = system_map["cpu"].AsString();
+                usd.s_gpu = system_map["gpu"].AsString();
+                usd.s_os = system_map["os"].AsString();
+                usd.s_ram = system_map["ram"].AsInteger();
+
+                if (mmap["stats"].Type != OSDType.Map)
+                    return new UserSession();
+
+                OSDMap stats_map = (OSDMap)mmap["stats"];
+                {
+
+                    if (stats_map["failures"].Type != OSDType.Map)
+                        return new UserSession();
+                    OSDMap stats_failures = (OSDMap)stats_map["failures"];
+                    usd.f_dropped = stats_failures["dropped"].AsInteger();
+                    usd.f_failed_resends = stats_failures["failed_resends"].AsInteger();
+                    usd.f_invalid = stats_failures["invalid"].AsInteger();
+                    usd.f_resent = stats_failures["resent"].AsInteger();
+                    usd.f_send_packet = stats_failures["send_packet"].AsInteger();
+
+                    if (stats_map["net"].Type != OSDType.Map)
+                        return new UserSession();
+                    OSDMap stats_net = (OSDMap)stats_map["net"];
+                    {
+                        if (stats_net["in"].Type != OSDType.Map)
+                            return new UserSession();
+
+                        OSDMap net_in = (OSDMap)stats_net["in"];
+                        usd.n_in_kb = (float)net_in["kbytes"].AsReal();
+                        usd.n_in_pk = net_in["packets"].AsInteger();
+
+                        if (stats_net["out"].Type != OSDType.Map)
+                            return new UserSession();
+                        OSDMap net_out = (OSDMap)stats_net["out"];
+
+                        usd.n_out_kb = (float)net_out["kbytes"].AsReal();
+                        usd.n_out_pk = net_out["packets"].AsInteger();
+                    }
+                }
+            }
+
+            uid.session_data = usd;
+            m_sessions[agentID] = uid;
+
+//            m_log.DebugFormat(
+//                "[WEB STATS MODULE]: Parse data for {0} {1}, session {2}", uid.name_f, uid.name_l, uid.session_id);
+
+            return uid;
+        }
+
+        private void UpdateUserStats(UserSession uid, SqliteConnection db)
+        {
+//            m_log.DebugFormat(
+//                "[WEB STATS MODULE]: Updating user stats for {0} {1}, session {2}", uid.name_f, uid.name_l, uid.session_id);
+
+            if (uid.session_id == UUID.Zero)
+                return;
+
+            lock (db)
+            {
+                using (SqliteCommand updatecmd = new SqliteCommand(SQL_STATS_TABLE_INSERT, db))
+                {
+                    updatecmd.Parameters.Add(new SqliteParameter(":session_id", uid.session_data.session_id.ToString()));
+                    updatecmd.Parameters.Add(new SqliteParameter(":agent_id", uid.session_data.agent_id.ToString()));
+                    updatecmd.Parameters.Add(new SqliteParameter(":region_id", uid.session_data.region_id.ToString()));
+                    updatecmd.Parameters.Add(new SqliteParameter(":last_updated", (int) uid.session_data.last_updated));
+                    updatecmd.Parameters.Add(new SqliteParameter(":remote_ip", uid.session_data.remote_ip));
+                    updatecmd.Parameters.Add(new SqliteParameter(":name_f", uid.session_data.name_f));
+                    updatecmd.Parameters.Add(new SqliteParameter(":name_l", uid.session_data.name_l));
+                    updatecmd.Parameters.Add(new SqliteParameter(":avg_agents_in_view", uid.session_data.avg_agents_in_view));
+                    updatecmd.Parameters.Add(new SqliteParameter(":min_agents_in_view",
+                                                                 (int) uid.session_data.min_agents_in_view));
+                    updatecmd.Parameters.Add(new SqliteParameter(":max_agents_in_view",
+                                                                 (int) uid.session_data.max_agents_in_view));
+                    updatecmd.Parameters.Add(new SqliteParameter(":mode_agents_in_view",
+                                                                 (int) uid.session_data.mode_agents_in_view));
+                    updatecmd.Parameters.Add(new SqliteParameter(":avg_fps", uid.session_data.avg_fps));
+                    updatecmd.Parameters.Add(new SqliteParameter(":min_fps", uid.session_data.min_fps));
+                    updatecmd.Parameters.Add(new SqliteParameter(":max_fps", uid.session_data.max_fps));
+                    updatecmd.Parameters.Add(new SqliteParameter(":mode_fps", uid.session_data.mode_fps));
+                    updatecmd.Parameters.Add(new SqliteParameter(":a_language", uid.session_data.a_language));
+                    updatecmd.Parameters.Add(new SqliteParameter(":mem_use", uid.session_data.mem_use));
+                    updatecmd.Parameters.Add(new SqliteParameter(":meters_traveled", uid.session_data.meters_traveled));
+                    updatecmd.Parameters.Add(new SqliteParameter(":avg_ping", uid.session_data.avg_ping));
+                    updatecmd.Parameters.Add(new SqliteParameter(":min_ping", uid.session_data.min_ping));
+                    updatecmd.Parameters.Add(new SqliteParameter(":max_ping", uid.session_data.max_ping));
+                    updatecmd.Parameters.Add(new SqliteParameter(":mode_ping", uid.session_data.mode_ping));
+                    updatecmd.Parameters.Add(new SqliteParameter(":regions_visited", uid.session_data.regions_visited));
+                    updatecmd.Parameters.Add(new SqliteParameter(":run_time", uid.session_data.run_time));
+                    updatecmd.Parameters.Add(new SqliteParameter(":avg_sim_fps", uid.session_data.avg_sim_fps));
+                    updatecmd.Parameters.Add(new SqliteParameter(":min_sim_fps", uid.session_data.min_sim_fps));
+                    updatecmd.Parameters.Add(new SqliteParameter(":max_sim_fps", uid.session_data.max_sim_fps));
+                    updatecmd.Parameters.Add(new SqliteParameter(":mode_sim_fps", uid.session_data.mode_sim_fps));
+                    updatecmd.Parameters.Add(new SqliteParameter(":start_time", uid.session_data.start_time));
+                    updatecmd.Parameters.Add(new SqliteParameter(":client_version", uid.session_data.client_version));
+                    updatecmd.Parameters.Add(new SqliteParameter(":s_cpu", uid.session_data.s_cpu));
+                    updatecmd.Parameters.Add(new SqliteParameter(":s_gpu", uid.session_data.s_gpu));
+                    updatecmd.Parameters.Add(new SqliteParameter(":s_os", uid.session_data.s_os));
+                    updatecmd.Parameters.Add(new SqliteParameter(":s_ram", uid.session_data.s_ram));
+                    updatecmd.Parameters.Add(new SqliteParameter(":d_object_kb", uid.session_data.d_object_kb));
+                    updatecmd.Parameters.Add(new SqliteParameter(":d_texture_kb", uid.session_data.d_texture_kb));
+                    updatecmd.Parameters.Add(new SqliteParameter(":d_world_kb", uid.session_data.d_world_kb));
+                    updatecmd.Parameters.Add(new SqliteParameter(":n_in_kb", uid.session_data.n_in_kb));
+                    updatecmd.Parameters.Add(new SqliteParameter(":n_in_pk", uid.session_data.n_in_pk));
+                    updatecmd.Parameters.Add(new SqliteParameter(":n_out_kb", uid.session_data.n_out_kb));
+                    updatecmd.Parameters.Add(new SqliteParameter(":n_out_pk", uid.session_data.n_out_pk));
+                    updatecmd.Parameters.Add(new SqliteParameter(":f_dropped", uid.session_data.f_dropped));
+                    updatecmd.Parameters.Add(new SqliteParameter(":f_failed_resends", uid.session_data.f_failed_resends));
+                    updatecmd.Parameters.Add(new SqliteParameter(":f_invalid", uid.session_data.f_invalid));
+                    updatecmd.Parameters.Add(new SqliteParameter(":f_off_circuit", uid.session_data.f_off_circuit));
+                    updatecmd.Parameters.Add(new SqliteParameter(":f_resent", uid.session_data.f_resent));
+                    updatecmd.Parameters.Add(new SqliteParameter(":f_send_packet", uid.session_data.f_send_packet));
+
+//                        StringBuilder parameters = new StringBuilder();
+//                        SqliteParameterCollection spc = updatecmd.Parameters;
+//                        foreach (SqliteParameter sp in spc)
+//                            parameters.AppendFormat("{0}={1},", sp.ParameterName, sp.Value);
+//
+//                        m_log.DebugFormat("[WEB STATS MODULE]: Parameters {0}", parameters);
+
+//                    m_log.DebugFormat("[WEB STATS MODULE]: Database stats update for {0}", uid.session_data.agent_id);
+
+                    updatecmd.ExecuteNonQuery();
+                }
+            }
+        }
+
+        #region SQL
+        private const string SQL_STATS_TABLE_CREATE = @"CREATE TABLE IF NOT EXISTS stats_session_data (
+               session_id VARCHAR(36) NOT NULL PRIMARY KEY,
+               agent_id VARCHAR(36) NOT NULL DEFAULT '',
+               region_id VARCHAR(36) NOT NULL DEFAULT '',
+               last_updated INT NOT NULL DEFAULT '0',
+               remote_ip VARCHAR(16) NOT NULL DEFAULT '',
+               name_f VARCHAR(50) NOT NULL DEFAULT '',
+               name_l VARCHAR(50) NOT NULL DEFAULT '',
+               avg_agents_in_view FLOAT NOT NULL DEFAULT '0',
+               min_agents_in_view INT NOT NULL DEFAULT '0',
+               max_agents_in_view INT NOT NULL DEFAULT '0',
+               mode_agents_in_view INT NOT NULL DEFAULT '0',
+               avg_fps FLOAT NOT NULL DEFAULT '0',
+               min_fps FLOAT NOT NULL DEFAULT '0',
+               max_fps FLOAT NOT NULL DEFAULT '0',
+               mode_fps FLOAT NOT NULL DEFAULT '0',
+               a_language VARCHAR(25) NOT NULL DEFAULT '',
+               mem_use FLOAT NOT NULL DEFAULT '0',
+               meters_traveled FLOAT NOT NULL DEFAULT '0',
+               avg_ping FLOAT NOT NULL DEFAULT '0',
+               min_ping FLOAT NOT NULL DEFAULT '0',
+               max_ping FLOAT NOT NULL DEFAULT '0',
+               mode_ping FLOAT NOT NULL DEFAULT '0',
+               regions_visited INT NOT NULL DEFAULT '0',
+               run_time FLOAT NOT NULL DEFAULT '0',
+               avg_sim_fps FLOAT NOT NULL DEFAULT '0',
+               min_sim_fps FLOAT NOT NULL DEFAULT '0',
+               max_sim_fps FLOAT NOT NULL DEFAULT '0',
+               mode_sim_fps FLOAT NOT NULL DEFAULT '0',
+               start_time FLOAT NOT NULL DEFAULT '0',
+               client_version VARCHAR(255) NOT NULL DEFAULT '',
+               s_cpu VARCHAR(255) NOT NULL DEFAULT '',
+               s_gpu VARCHAR(255) NOT NULL DEFAULT '',
+               s_os VARCHAR(2255) NOT NULL DEFAULT '',
+               s_ram INT NOT NULL DEFAULT '0',
+               d_object_kb FLOAT NOT NULL DEFAULT '0',
+               d_texture_kb FLOAT NOT NULL DEFAULT '0',
+               d_world_kb FLOAT NOT NULL DEFAULT '0',
+               n_in_kb FLOAT NOT NULL DEFAULT '0',
+               n_in_pk INT NOT NULL DEFAULT '0',
+               n_out_kb FLOAT NOT NULL DEFAULT '0',
+               n_out_pk INT NOT NULL DEFAULT '0',
+               f_dropped INT NOT NULL DEFAULT '0',
+               f_failed_resends INT NOT NULL DEFAULT '0',
+               f_invalid INT NOT NULL DEFAULT '0',
+               f_off_circuit INT NOT NULL DEFAULT '0',
+               f_resent INT NOT NULL DEFAULT '0',
+               f_send_packet INT NOT NULL DEFAULT '0'
+            );";
+
+        private const string SQL_STATS_TABLE_INSERT = @"INSERT OR REPLACE INTO stats_session_data (
+session_id, agent_id, region_id, last_updated, remote_ip, name_f, name_l, avg_agents_in_view, min_agents_in_view, max_agents_in_view, 
+mode_agents_in_view, avg_fps, min_fps, max_fps, mode_fps, a_language, mem_use, meters_traveled, avg_ping, min_ping, max_ping, mode_ping, 
+regions_visited, run_time, avg_sim_fps, min_sim_fps, max_sim_fps, mode_sim_fps, start_time, client_version, s_cpu, s_gpu, s_os, s_ram,
+d_object_kb, d_texture_kb, d_world_kb, n_in_kb, n_in_pk, n_out_kb, n_out_pk, f_dropped, f_failed_resends, f_invalid, f_off_circuit,
+f_resent, f_send_packet
+)
+VALUES
+(
+:session_id, :agent_id, :region_id, :last_updated, :remote_ip, :name_f, :name_l, :avg_agents_in_view, :min_agents_in_view, :max_agents_in_view, 
+:mode_agents_in_view, :avg_fps, :min_fps, :max_fps, :mode_fps, :a_language, :mem_use, :meters_traveled, :avg_ping, :min_ping, :max_ping, :mode_ping, 
+:regions_visited, :run_time, :avg_sim_fps, :min_sim_fps, :max_sim_fps, :mode_sim_fps, :start_time, :client_version, :s_cpu, :s_gpu, :s_os, :s_ram,
+:d_object_kb, :d_texture_kb, :d_world_kb, :n_in_kb, :n_in_pk, :n_out_kb, :n_out_pk, :f_dropped, :f_failed_resends, :f_invalid, :f_off_circuit,
+:f_resent, :f_send_packet
+)
+";
+
+    #endregion
+
+    }
+
+    public static class UserSessionUtil
+    {
+        public static UserSessionData newUserSessionData()
+        {
+            UserSessionData obj = ZeroSession(new UserSessionData());
+            return obj;
+        }
+
+        public static void UpdateMultiItems(ref UserSessionData s, int agents_in_view, float ping, float sim_fps, float fps)
+        {
+            // don't insert zero values here or it'll skew the statistics.
+            if (agents_in_view == 0 && fps == 0 && sim_fps == 0 && ping == 0)
+                return;
+            s._agents_in_view.Add(agents_in_view);
+            s._fps.Add(fps);
+            s._sim_fps.Add(sim_fps);
+            s._ping.Add(ping);
+
+            int[] __agents_in_view = s._agents_in_view.ToArray();
+
+            s.avg_agents_in_view = ArrayAvg_i(__agents_in_view);
+            s.min_agents_in_view = ArrayMin_i(__agents_in_view);
+            s.max_agents_in_view = ArrayMax_i(__agents_in_view);
+            s.mode_agents_in_view = ArrayMode_i(__agents_in_view);
+
+            float[] __fps = s._fps.ToArray();
+            s.avg_fps = ArrayAvg_f(__fps);
+            s.min_fps = ArrayMin_f(__fps);
+            s.max_fps = ArrayMax_f(__fps);
+            s.mode_fps = ArrayMode_f(__fps);
+
+            float[] __sim_fps = s._sim_fps.ToArray();
+            s.avg_sim_fps = ArrayAvg_f(__sim_fps);
+            s.min_sim_fps = ArrayMin_f(__sim_fps);
+            s.max_sim_fps = ArrayMax_f(__sim_fps);
+            s.mode_sim_fps = ArrayMode_f(__sim_fps);
+
+            float[] __ping = s._ping.ToArray();
+            s.avg_ping = ArrayAvg_f(__ping);
+            s.min_ping = ArrayMin_f(__ping);
+            s.max_ping = ArrayMax_f(__ping);
+            s.mode_ping = ArrayMode_f(__ping);
+        }
+
+        #region Statistics
+
+        public static int ArrayMin_i(int[] arr)
+        {
+            int cnt = arr.Length;
+            if (cnt == 0)
+                return 0;
+
+            Array.Sort(arr);
+            return arr[0];
+        }
+
+        public static int ArrayMax_i(int[] arr)
+        {
+            int cnt = arr.Length;
+            if (cnt == 0)
+                return 0;
+
+            Array.Sort(arr);
+            return arr[cnt-1];
+        }
+
+        public static float ArrayMin_f(float[] arr)
+        {
+            int cnt = arr.Length;
+            if (cnt == 0)
+                return 0;
+
+            Array.Sort(arr);
+            return arr[0];
+        }
+
+        public static float ArrayMax_f(float[] arr)
+        {
+            int cnt = arr.Length;
+            if (cnt == 0)
+                return 0;
+
+            Array.Sort(arr);
+            return arr[cnt - 1];
+        }
+
+        public static float ArrayAvg_i(int[] arr)
+        {
+            int cnt = arr.Length;
+
+            if (cnt == 0)
+                return 0;
+
+            float result = arr[0];
+
+            for (int i = 1; i < cnt; i++)
+                result += arr[i];
+
+            return result / cnt;
+        }
+
+        public static float ArrayAvg_f(float[] arr)
+        {
+            int cnt = arr.Length;
+
+            if (cnt == 0)
+                return 0;
+
+            float result = arr[0];
+
+            for (int i = 1; i < cnt; i++)
+                result += arr[i];
+
+            return result / cnt;
+        }
+
+        public static float ArrayMode_f(float[] arr)
+        {
+            List<float> mode = new List<float>();
+
+            float[] srtArr = new float[arr.Length];
+            float[,] freq = new float[arr.Length, 2];
+            Array.Copy(arr, srtArr, arr.Length);
+            Array.Sort(srtArr);
+
+            float tmp = srtArr[0];
+            int index = 0;
+            int i = 0;
+            while (i < srtArr.Length)
+            {
+                freq[index, 0] = tmp;
+
+                while (tmp == srtArr[i])
+                {
+                    freq[index, 1]++;
+                    i++;
+
+                    if (i > srtArr.Length - 1)
+                        break;
+                }
+
+                if (i < srtArr.Length)
+                {
+                    tmp = srtArr[i];
+                    index++;
+                }
+
+            }
+
+            Array.Clear(srtArr, 0, srtArr.Length);
+
+            for (i = 0; i < srtArr.Length; i++)
+                srtArr[i] = freq[i, 1];
+
+            Array.Sort(srtArr);
+
+            if ((srtArr[srtArr.Length - 1]) == 0 || (srtArr[srtArr.Length - 1]) == 1)
+                return 0;
+
+            float freqtest = (float)freq.Length / freq.Rank;
+
+            for (i = 0; i < freqtest; i++)
+            {
+                if (freq[i, 1] == srtArr[index])
+                    mode.Add(freq[i, 0]);
+
+            }
+
+            return mode.ToArray()[0];
+        }
+
+        public static int ArrayMode_i(int[] arr)
+        {
+            List<int> mode = new List<int>();
+
+            int[] srtArr = new int[arr.Length];
+            int[,] freq = new int[arr.Length, 2];
+            Array.Copy(arr, srtArr, arr.Length);
+            Array.Sort(srtArr);
+
+            int tmp = srtArr[0];
+            int index = 0;
+            int i = 0;
+            while (i < srtArr.Length)
+            {
+                freq[index, 0] = tmp;
+
+                while (tmp == srtArr[i])
+                {
+                    freq[index, 1]++;
+                    i++;
+
+                    if (i > srtArr.Length - 1)
+                        break;
+                }
+
+                if (i < srtArr.Length)
+                {
+                    tmp = srtArr[i];
+                    index++;
+                }
+
+            }
+
+            Array.Clear(srtArr, 0, srtArr.Length);
+
+            for (i = 0; i < srtArr.Length; i++)
+                srtArr[i] = freq[i, 1];
+
+            Array.Sort(srtArr);
+
+            if ((srtArr[srtArr.Length - 1]) == 0 || (srtArr[srtArr.Length - 1]) == 1)
+                return 0;
+           
+            float freqtest = (float)freq.Length / freq.Rank;
+
+            for (i = 0; i < freqtest; i++)
+            {
+                if (freq[i, 1] == srtArr[index])
+                    mode.Add(freq[i, 0]);
+
+            }
+
+            return mode.ToArray()[0];
+        }
+
+        #endregion
+
+        private static UserSessionData ZeroSession(UserSessionData s)
+        {
+            s.session_id = UUID.Zero;
+            s.agent_id = UUID.Zero;
+            s.region_id = UUID.Zero;
+            s.last_updated = Util.UnixTimeSinceEpoch();
+            s.remote_ip = "";
+            s.name_f = "";
+            s.name_l = "";
+            s.avg_agents_in_view = 0;
+            s.min_agents_in_view = 0;
+            s.max_agents_in_view = 0;
+            s.mode_agents_in_view = 0;
+            s.avg_fps = 0;
+            s.min_fps = 0;
+            s.max_fps = 0;
+            s.mode_fps = 0;
+            s.a_language = "";
+            s.mem_use = 0;
+            s.meters_traveled = 0;
+            s.avg_ping = 0;
+            s.min_ping = 0;
+            s.max_ping = 0;
+            s.mode_ping = 0;
+            s.regions_visited = 0;
+            s.run_time = 0;
+            s.avg_sim_fps = 0;
+            s.min_sim_fps = 0;
+            s.max_sim_fps = 0;
+            s.mode_sim_fps = 0;
+            s.start_time = 0;
+            s.client_version = "";
+            s.s_cpu = "";
+            s.s_gpu = "";
+            s.s_os = "";
+            s.s_ram = 0;
+            s.d_object_kb = 0;
+            s.d_texture_kb = 0;
+            s.d_world_kb = 0;
+            s.n_in_kb = 0;
+            s.n_in_pk = 0;
+            s.n_out_kb = 0;
+            s.n_out_pk = 0;
+            s.f_dropped = 0;
+            s.f_failed_resends = 0;
+            s.f_invalid = 0;
+            s.f_off_circuit = 0;
+            s.f_resent = 0;
+            s.f_send_packet = 0;
+            s._ping = new List<float>();
+            s._fps = new List<float>();
+            s._sim_fps = new List<float>();
+            s._agents_in_view = new List<int>();
+            return s;
+        }
+    }
+    #region structs
+
+    public class UserSession
+    {
+        public UUID session_id;
+        public UUID region_id;
+        public string name_f;
+        public string name_l;
+        public UserSessionData session_data;
+    }
+
+    public struct UserSessionData
+    {
+        public UUID session_id;
+        public UUID agent_id;
+        public UUID region_id;
+        public float last_updated;
+        public string remote_ip;
+        public string name_f;
+        public string name_l;
+        public float avg_agents_in_view;
+        public float min_agents_in_view;
+        public float max_agents_in_view;
+        public float mode_agents_in_view;
+        public float avg_fps;
+        public float min_fps;
+        public float max_fps;
+        public float mode_fps;
+        public string a_language;
+        public float mem_use;
+        public float meters_traveled;
+        public float avg_ping;
+        public float min_ping;
+        public float max_ping;
+        public float mode_ping;
+        public int regions_visited;
+        public float run_time;
+        public float avg_sim_fps;
+        public float min_sim_fps;
+        public float max_sim_fps;
+        public float mode_sim_fps;
+        public float start_time;
+        public string client_version;
+        public string s_cpu;
+        public string s_gpu;
+        public string s_os;
+        public int s_ram;
+        public float d_object_kb;
+        public float d_texture_kb;
+        public float d_world_kb;
+        public float n_in_kb;
+        public int n_in_pk;
+        public float n_out_kb;
+        public int n_out_pk;
+        public int f_dropped;
+        public int f_failed_resends;
+        public int f_invalid;
+        public int f_off_circuit;
+        public int f_resent;
+        public int f_send_packet;
+        public List<float> _ping;
+        public List<float> _fps;
+        public List<float> _sim_fps;
+        public List<int> _agents_in_view;
+    }
+  
+    #endregion
+
+    public class USimStatsData
+    {
+        private UUID m_regionID = UUID.Zero;
+        private volatile int m_statcounter = 0;
+        private volatile float m_timeDilation;
+        private volatile float m_simFps;
+        private volatile float m_physicsFps;
+        private volatile float m_agentUpdates;
+        private volatile float m_rootAgents;
+        private volatile float m_childAgents;
+        private volatile float m_totalPrims;
+        private volatile float m_activePrims;
+        private volatile float m_totalFrameTime;
+        private volatile float m_netFrameTime;
+        private volatile float m_physicsFrameTime;
+        private volatile float m_otherFrameTime;
+        private volatile float m_imageFrameTime;
+        private volatile float m_inPacketsPerSecond;
+        private volatile float m_outPacketsPerSecond;
+        private volatile float m_unackedBytes;
+        private volatile float m_agentFrameTime;
+        private volatile float m_pendingDownloads;
+        private volatile float m_pendingUploads;
+        private volatile float m_activeScripts;
+        private volatile float m_scriptLinesPerSecond;
+
+        public UUID RegionId { get { return m_regionID; } }
+        public int StatsCounter { get { return m_statcounter; } set { m_statcounter = value;}}
+        public float TimeDilation { get { return m_timeDilation; } }
+        public float SimFps { get { return m_simFps; } }
+        public float PhysicsFps { get { return m_physicsFps; } }
+        public float AgentUpdates { get { return m_agentUpdates; } }
+        public float RootAgents { get { return m_rootAgents; } }
+        public float ChildAgents { get { return m_childAgents; } }
+        public float TotalPrims { get { return m_totalPrims; } }
+        public float ActivePrims { get { return m_activePrims; } }
+        public float TotalFrameTime { get { return m_totalFrameTime; } }
+        public float NetFrameTime { get { return m_netFrameTime; } }
+        public float PhysicsFrameTime { get { return m_physicsFrameTime; } }
+        public float OtherFrameTime { get { return m_otherFrameTime; } }
+        public float ImageFrameTime { get { return m_imageFrameTime; } }
+        public float InPacketsPerSecond { get { return m_inPacketsPerSecond; } }
+        public float OutPacketsPerSecond { get { return m_outPacketsPerSecond; } }
+        public float UnackedBytes { get { return m_unackedBytes; } }
+        public float AgentFrameTime { get { return m_agentFrameTime; } }
+        public float PendingDownloads { get { return m_pendingDownloads; } }
+        public float PendingUploads { get { return m_pendingUploads; } }
+        public float ActiveScripts { get { return m_activeScripts; } }
+        public float ScriptLinesPerSecond { get { return m_scriptLinesPerSecond; } }
+
+        public USimStatsData(UUID pRegionID)
+        {
+            m_regionID = pRegionID;
+        }
+
+        public void ConsumeSimStats(SimStats stats)
+        {
+            m_regionID = stats.RegionUUID;
+            m_timeDilation = stats.StatsBlock[0].StatValue;
+            m_simFps = stats.StatsBlock[1].StatValue;
+            m_physicsFps = stats.StatsBlock[2].StatValue;
+            m_agentUpdates = stats.StatsBlock[3].StatValue;
+            m_rootAgents = stats.StatsBlock[4].StatValue;
+            m_childAgents = stats.StatsBlock[5].StatValue;
+            m_totalPrims = stats.StatsBlock[6].StatValue;
+            m_activePrims = stats.StatsBlock[7].StatValue;
+            m_totalFrameTime = stats.StatsBlock[8].StatValue;
+            m_netFrameTime = stats.StatsBlock[9].StatValue;
+            m_physicsFrameTime = stats.StatsBlock[10].StatValue;
+            m_otherFrameTime = stats.StatsBlock[11].StatValue;
+            m_imageFrameTime = stats.StatsBlock[12].StatValue;
+            m_inPacketsPerSecond = stats.StatsBlock[13].StatValue;
+            m_outPacketsPerSecond = stats.StatsBlock[14].StatValue;
+            m_unackedBytes = stats.StatsBlock[15].StatValue;
+            m_agentFrameTime = stats.StatsBlock[16].StatValue;
+            m_pendingDownloads = stats.StatsBlock[17].StatValue;
+            m_pendingUploads = stats.StatsBlock[18].StatValue;
+            m_activeScripts = stats.StatsBlock[19].StatValue;
+            m_scriptLinesPerSecond = stats.StatsBlock[20].StatValue;
+        }
+    }
+}
\ No newline at end of file