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path: root/OpenGridServices.UserServer/UserManager.cs
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using OpenGrid.Framework.Data;
using libsecondlife;
using System.Reflection;

using System.Xml;
using Nwc.XmlRpc;
using OpenSim.Framework.Sims;
using OpenSim.Framework.Inventory;
using OpenSim.Framework.Utilities;

using System.Security.Cryptography;

namespace OpenGridServices.UserServer
{
    public class UserManager
    {
        public OpenSim.Framework.Interfaces.UserConfig _config;
        Dictionary<string, IUserData> _plugins = new Dictionary<string, IUserData>();

        /// <summary>
        /// Adds a new user server plugin - user servers will be requested in the order they were loaded.
        /// </summary>
        /// <param name="FileName">The filename to the user server plugin DLL</param>
        public void AddPlugin(string FileName)
        {
            OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Userstorage: Attempting to load " + FileName);
            Assembly pluginAssembly = Assembly.LoadFrom(FileName);

            OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Userstorage: Found " + pluginAssembly.GetTypes().Length + " interfaces.");
            foreach (Type pluginType in pluginAssembly.GetTypes())
            {
                if (!pluginType.IsAbstract)
                {
                    Type typeInterface = pluginType.GetInterface("IUserData", true);

                    if (typeInterface != null)
                    {
                        IUserData plug = (IUserData)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
                        plug.Initialise();
                        this._plugins.Add(plug.getName(), plug);
                        OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Userstorage: Added IUserData Interface");
                    }

                    typeInterface = null;
                }
            }

            pluginAssembly = null;
        }

        /// <summary>
        /// Loads a user profile from a database by UUID
        /// </summary>
        /// <param name="uuid">The target UUID</param>
        /// <returns>A user profile</returns>
        public UserProfileData getUserProfile(LLUUID uuid)
        {
            foreach (KeyValuePair<string, IUserData> plugin in _plugins)
            {
                try
                {
                    UserProfileData profile = plugin.Value.getUserByUUID(uuid);
                    profile.currentAgent = getUserAgent(profile.UUID);
                    return profile;
                }
                catch (Exception e)
                {
                    OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Unable to find user via " + plugin.Key + "(" + e.ToString() + ")");
                }
            }

            return null;
        }


        /// <summary>
        /// Loads a user profile by name
        /// </summary>
        /// <param name="name">The target name</param>
        /// <returns>A user profile</returns>
        public UserProfileData getUserProfile(string name)
        {
            foreach (KeyValuePair<string, IUserData> plugin in _plugins)
            {
                try
                {
                    UserProfileData profile = plugin.Value.getUserByName(name);
                    profile.currentAgent = getUserAgent(profile.UUID);
                    return profile;
                }
                catch (Exception e)
                {
                    OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Unable to find user via " + plugin.Key + "(" + e.ToString() + ")");
                }
            }

            return null;
        }

        /// <summary>
        /// Loads a user profile by name
        /// </summary>
        /// <param name="fname">First name</param>
        /// <param name="lname">Last name</param>
        /// <returns>A user profile</returns>
        public UserProfileData getUserProfile(string fname, string lname)
        {
            foreach (KeyValuePair<string, IUserData> plugin in _plugins)
            {
                try
                {
                    UserProfileData profile = plugin.Value.getUserByName(fname,lname);
                    profile.currentAgent = getUserAgent(profile.UUID);
                    return profile;
                }
                catch (Exception e)
                {
                    OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Unable to find user via " + plugin.Key + "(" + e.ToString() + ")");
                }
            }

            return null;
        }

        public UserAgentData getUserAgent(LLUUID uuid)
        {
            foreach (KeyValuePair<string, IUserData> plugin in _plugins)
            {
                try
                {
                    return plugin.Value.getAgentByUUID(uuid);
                }
                catch (Exception e)
                {
                    OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Unable to find user via " + plugin.Key + "(" + e.ToString() + ")");
                }
            }

            return null;
        }

        public UserAgentData getUserAgent(string name)
        {
            foreach (KeyValuePair<string, IUserData> plugin in _plugins)
            {
                try
                {
                    return plugin.Value.getAgentByName(name);
                }
                catch (Exception e)
                {
                    OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Unable to find user via " + plugin.Key + "(" + e.ToString() + ")");
                }
            }

            return null;
        }

        public UserAgentData getUserAgent(string fname, string lname)
        {
            foreach (KeyValuePair<string, IUserData> plugin in _plugins)
            {
                try
                {
                    return plugin.Value.getAgentByName(fname,lname);
                }
                catch (Exception e)
                {
                    OpenSim.Framework.Console.MainConsole.Instance.WriteLine(OpenSim.Framework.Console.LogPriority.LOW, "Unable to find user via " + plugin.Key + "(" + e.ToString() + ")");
                }
            }

            return null;
        }

        private static XmlRpcResponse CreateErrorConnectingToGridResponse()
        {
            XmlRpcResponse response = new XmlRpcResponse();
            Hashtable ErrorRespData = new Hashtable();
            ErrorRespData["reason"] = "key";
            ErrorRespData["message"] = "Error connecting to grid. Could not percieve credentials from login XML.";
            ErrorRespData["login"] = "false";
            response.Value = ErrorRespData;
            return response;
        }

        private static XmlRpcResponse CreateLoginErrorResponse()
        {
            XmlRpcResponse response = new XmlRpcResponse();
            Hashtable ErrorRespData = new Hashtable();
            ErrorRespData["reason"] = "key";
            ErrorRespData["message"] = "Could not authenticate your avatar. Please check your username and password, and check the grid if problems persist.";
            ErrorRespData["login"] = "false";
            response.Value = ErrorRespData;
            return response;
        }

        private static XmlRpcResponse CreateAlreadyLoggedInResponse()
        {
            XmlRpcResponse response = new XmlRpcResponse();
            Hashtable PresenceErrorRespData = new Hashtable();
            PresenceErrorRespData["reason"] = "presence";
            PresenceErrorRespData["message"] = "You appear to be already logged in, if this is not the case please wait for your session to timeout, if this takes longer than a few minutes please contact the grid owner";
            PresenceErrorRespData["login"] = "false";
            response.Value = PresenceErrorRespData;
            return response;
        }

        public virtual void CustomiseResponse(ref Hashtable response, ref UserProfileData theUser)
        {
            // Load information from the gridserver
            SimProfile SimInfo = new SimProfile();
            SimInfo = SimInfo.LoadFromGrid(theUser.currentAgent.currentHandle, _config.GridServerURL, _config.GridSendKey, _config.GridRecvKey);

            // Customise the response
            // Home Location
            response["home"] = "{'region_handle':[r" + (SimInfo.RegionLocX * 256).ToString() + ",r" + (SimInfo.RegionLocY * 256).ToString() + "], " + 
                "'position':[r" + theUser.homeLocation.X.ToString() + ",r" + theUser.homeLocation.Y.ToString() + ",r" + theUser.homeLocation.Z.ToString() + "], " +
                "'look_at':[r" + theUser.homeLocation.X.ToString() + ",r" + theUser.homeLocation.Y.ToString() + ",r" + theUser.homeLocation.Z.ToString() + "]}";

            // Destination
            response["sim_ip"] = SimInfo.sim_ip;
            response["sim_port"] = (Int32)SimInfo.sim_port;
            response["region_y"] = (Int32)SimInfo.RegionLocY * 256;
            response["region_x"] = (Int32)SimInfo.RegionLocX * 256;

            // Notify the target of an incoming user
            Console.WriteLine("Notifying " + SimInfo.regionname + " (" + SimInfo.caps_url + ")");

            // Prepare notification
            Hashtable SimParams = new Hashtable();
            SimParams["session_id"] = theUser.currentAgent.sessionID.ToString();
            SimParams["secure_session_id"] = theUser.currentAgent.secureSessionID.ToString();
            SimParams["firstname"] = theUser.username;
            SimParams["lastname"] = theUser.surname;
            SimParams["agent_id"] = theUser.UUID.ToString();
            SimParams["circuit_code"] = (Int32)Convert.ToUInt32(response["circuit_code"]);
            SimParams["startpos_x"] = theUser.currentAgent.currentPos.X.ToString();
            SimParams["startpos_y"] = theUser.currentAgent.currentPos.Y.ToString();
            SimParams["startpos_z"] = theUser.currentAgent.currentPos.Z.ToString();
            ArrayList SendParams = new ArrayList();
            SendParams.Add(SimParams);

            // Update agent with target sim
            theUser.currentAgent.currentRegion = SimInfo.UUID;
            theUser.currentAgent.currentHandle = SimInfo.regionhandle;

            // Send
            XmlRpcRequest GridReq = new XmlRpcRequest("expect_user", SendParams);
            XmlRpcResponse GridResp = GridReq.Send(SimInfo.caps_url, 3000);
        }

        public bool AuthenticateUser(ref UserProfileData profile, string password)
        {
            password = password.Remove(0, 3); //remove $1$

            MD5CryptoServiceProvider MD5summer = new MD5CryptoServiceProvider();

            byte[] byteString = System.Text.Encoding.ASCII.GetBytes(password + ":" + profile.passwordSalt);

            byteString = MD5summer.ComputeHash(byteString);
            System.Text.StringBuilder s = new System.Text.StringBuilder();
            foreach (byte b in byteString)
            {
                s.Append(b.ToString("x2").ToLower());
            }

            return profile.passwordHash.Equals(s.ToString(), StringComparison.InvariantCultureIgnoreCase);
        }

        public void CreateAgent(ref UserProfileData profile, XmlRpcRequest request)
        {
            Hashtable requestData = (Hashtable)request.Params[0];

            UserAgentData agent = new UserAgentData();

            // User connection
            agent.agentIP = "";
            agent.agentOnline = true;
            agent.agentPort = 0;

            // Generate sessions
            RNGCryptoServiceProvider rand = new RNGCryptoServiceProvider();
            byte[] randDataS = new byte[16];
            byte[] randDataSS = new byte[16];
            rand.GetBytes(randDataS);
            rand.GetBytes(randDataSS);

            agent.secureSessionID = new LLUUID(randDataSS, 0);
            agent.sessionID = new LLUUID(randDataS, 0);

            // Profile UUID
            agent.UUID = profile.UUID;

            // Current position (from Home)
            agent.currentHandle = profile.homeRegion;
            agent.currentPos = profile.homeLocation;

            // If user specified additional start, use that
            if (requestData.ContainsKey("start"))
            {
                string startLoc = (string)requestData["start"];
                if (!(startLoc == "last" || startLoc == "home"))
                {
                    // Ignore it! Heh.
                }
            }

            // What time did the user login?
            agent.loginTime = Util.UnixTimeSinceEpoch();
            agent.logoutTime = 0;

            // Current location
            agent.regionID = new LLUUID(); // Fill in later
            agent.currentRegion = "";      // Fill in later
        }

        public bool CommitAgent(ref UserProfileData profile)
        {
            // Saves the agent to database
            return true;
        }

        public XmlRpcResponse XmlRpcLoginMethod(XmlRpcRequest request)
        {
            XmlRpcResponse response = new XmlRpcResponse();
            Hashtable requestData = (Hashtable)request.Params[0];

            bool GoodXML = (requestData.Contains("first") && requestData.Contains("last") && requestData.Contains("passwd"));
            bool GoodLogin = false;
            string firstname = "";
            string lastname = "";
            string passwd = "";

            UserProfileData TheUser;

            if (GoodXML)
            {
                firstname = (string)requestData["first"];
                lastname = (string)requestData["last"];
                passwd = (string)requestData["passwd"];

                TheUser = getUserProfile(firstname, lastname);
                GoodLogin = AuthenticateUser(ref TheUser, passwd);
            }
            else
            {
                return CreateErrorConnectingToGridResponse();
            }

            if (!GoodLogin)
            {
                return CreateLoginErrorResponse();
            }
            else
            {
                // If we already have a session...
                if (TheUser.currentAgent != null && TheUser.currentAgent.agentOnline)
                {
                    // Reject the login
                    return CreateAlreadyLoggedInResponse();
                }
                // Otherwise...
                // Create a new agent session
                CreateAgent(ref TheUser, request);

                try
                {
                    Hashtable responseData = new Hashtable();

                    LLUUID AgentID = TheUser.UUID;
                    
                    // Global Texture Section
                    Hashtable GlobalT = new Hashtable();
                    GlobalT["sun_texture_id"] = "cce0f112-878f-4586-a2e2-a8f104bba271";
                    GlobalT["cloud_texture_id"] = "fc4b9f0b-d008-45c6-96a4-01dd947ac621";
                    GlobalT["moon_texture_id"] = "fc4b9f0b-d008-45c6-96a4-01dd947ac621";
                    ArrayList GlobalTextures = new ArrayList();
                    GlobalTextures.Add(GlobalT);

                    // Login Flags Section
                    Hashtable LoginFlagsHash = new Hashtable();
                    LoginFlagsHash["daylight_savings"] = "N";
                    LoginFlagsHash["stipend_since_login"] = "N";
                    LoginFlagsHash["gendered"] = "Y";
                    LoginFlagsHash["ever_logged_in"] = "N"; // Should allow male/female av selection
                    ArrayList LoginFlags = new ArrayList();
                    LoginFlags.Add(LoginFlagsHash);

                    // UI Customisation Section
                    Hashtable uiconfig = new Hashtable();
                    uiconfig["allow_first_life"] = "Y";
                    ArrayList ui_config = new ArrayList();
                    ui_config.Add(uiconfig);

                    // Classified Categories Section
                    Hashtable ClassifiedCategoriesHash = new Hashtable();
                    ClassifiedCategoriesHash["category_name"] = "Generic";
                    ClassifiedCategoriesHash["category_id"] = (Int32)1;
                    ArrayList ClassifiedCategories = new ArrayList();
                    ClassifiedCategories.Add(ClassifiedCategoriesHash);

                    // Inventory Library Section
                    ArrayList AgentInventoryArray = new ArrayList();
                    Hashtable TempHash;

                    AgentInventory Library = new AgentInventory();
                    Library.CreateRootFolder(AgentID, true);

                    foreach (InventoryFolder InvFolder in Library.InventoryFolders.Values)
                    {
                        TempHash = new Hashtable();
                        TempHash["name"] = InvFolder.FolderName;
                        TempHash["parent_id"] = InvFolder.ParentID.ToStringHyphenated();
                        TempHash["version"] = (Int32)InvFolder.Version;
                        TempHash["type_default"] = (Int32)InvFolder.DefaultType;
                        TempHash["folder_id"] = InvFolder.FolderID.ToStringHyphenated();
                        AgentInventoryArray.Add(TempHash);
                    }

                    Hashtable InventoryRootHash = new Hashtable();
                    InventoryRootHash["folder_id"] = Library.InventoryRoot.FolderID.ToStringHyphenated();
                    ArrayList InventoryRoot = new ArrayList();
                    InventoryRoot.Add(InventoryRootHash);

                    Hashtable InitialOutfitHash = new Hashtable();
                    InitialOutfitHash["folder_name"] = "Nightclub Female";
                    InitialOutfitHash["gender"] = "female";
                    ArrayList InitialOutfit = new ArrayList();
                    InitialOutfit.Add(InitialOutfitHash);

                    // Circuit Code
                    uint circode = (uint)(Util.RandomClass.Next());

                    // Generics
                    responseData["last_name"] = TheUser.surname;
                    responseData["ui-config"] = ui_config;
                    responseData["sim_ip"] = "127.0.0.1"; //SimInfo.sim_ip.ToString();
                    responseData["login-flags"] = LoginFlags;
                    responseData["global-textures"] = GlobalTextures;
                    responseData["classified_categories"] = ClassifiedCategories;
                    responseData["event_categories"] = new ArrayList();
                    responseData["inventory-skeleton"] = AgentInventoryArray;
                    responseData["inventory-skel-lib"] = new ArrayList();
                    responseData["inventory-root"] = InventoryRoot;
                    responseData["event_notifications"] = new ArrayList();
                    responseData["gestures"] = new ArrayList();
                    responseData["inventory-lib-owner"] = new ArrayList();
                    responseData["initial-outfit"] = InitialOutfit;
                    responseData["seconds_since_epoch"] = (Int32)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;
                    responseData["start_location"] = "last";
                    responseData["home"] = "!!null temporary value {home}!!";   // Overwritten
                    responseData["message"] = _config.DefaultStartupMsg;
                    responseData["first_name"] = TheUser.username;
                    responseData["circuit_code"] = (Int32)circode;
                    responseData["sim_port"] = 0; //(Int32)SimInfo.sim_port;
                    responseData["secure_session_id"] = TheUser.currentAgent.secureSessionID.ToStringHyphenated();
                    responseData["look_at"] = "\n[r" + TheUser.homeLookAt.X.ToString() + ",r" + TheUser.homeLookAt.Y.ToString() + ",r" + TheUser.homeLookAt.Z.ToString() + "]\n";
                    responseData["agent_id"] = AgentID.ToStringHyphenated();
                    responseData["region_y"] = (Int32)0;    // Overwritten
                    responseData["region_x"] = (Int32)0;    // Overwritten
                    responseData["seed_capability"] = "";
                    responseData["agent_access"] = "M";
                    responseData["session_id"] = TheUser.currentAgent.sessionID.ToStringHyphenated();
                    responseData["login"] = "true";

                    this.CustomiseResponse(ref responseData, ref TheUser);

                    CommitAgent(ref TheUser);

                    response.Value = responseData;
                    //                   TheUser.SendDataToSim(SimInfo);
                    return response;

                }
                catch (Exception E)
                {
                    Console.WriteLine(E.ToString());
                }
                //}
            }
            return response;

        }

        public string RestDeleteUserSessionMethod(string request, string path, string param)
        {
            // TODO! Important!

            return "OK";
        }

    }
}