/*
* Copyright (c) OpenSim project, http://sim.opensecondlife.org/>
* All rights reserved.
*
* 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 <organization> 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 <copyright holder> ``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 <copyright holder> 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 Nwc.XmlRpc;
using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Collections;
using System.Xml;
using libsecondlife;

namespace OpenSim
{
	/// <summary>
	/// Description of Login_manager.
	/// </summary>
	public class LoginManager
	{
		public LoginManager(Logon login)
		{
			Login=login;
		}
		public Logon Login;
		public ushort loginPort = Globals.Instance.LoginServerPort;
		public IPAddress clientAddress = IPAddress.Loopback;
		public IPAddress remoteAddress = IPAddress.Any;
		private Socket loginServer;
		private Random RandomClass = new Random();
		private int NumClients;

		// InitializeLoginProxy: initialize the login proxy
		private void InitializeLoginProxy() {
			loginServer = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
			loginServer.Bind(new IPEndPoint(remoteAddress, loginPort));
			loginServer.Listen(1);
		}
		
		public void Startup()
		{
			this.InitializeLoginProxy();
			Thread runLoginProxy = new Thread(new ThreadStart(RunLoginProxy));
			runLoginProxy.IsBackground = true;
			runLoginProxy.Start();
		}
		
		private void RunLoginProxy() 
		{
		    try 
		    {
		    	for (;;) 
		    	{
		    		Socket client = loginServer.Accept();
		    		IPEndPoint clientEndPoint = (IPEndPoint)client.RemoteEndPoint;

		    		
		    		NetworkStream networkStream = new NetworkStream(client);
		    		StreamReader networkReader = new StreamReader(networkStream);
		    		StreamWriter networkWriter = new StreamWriter(networkStream);

		    		try
		    		{
		    			ProxyLogin(networkReader, networkWriter);
		    		}
		    		catch (Exception e)
		    		{
		    			Console.WriteLine(e.Message);
		    		}

		    		networkWriter.Close();
		    		networkReader.Close();
		    		networkStream.Close();

		    		client.Close();

		    		// send any packets queued for injection
		    		
				}
		    } 
		    catch (Exception e)
		    {
				Console.WriteLine(e.Message);
				Console.WriteLine(e.StackTrace);
		    }
		}

		// ProxyLogin: proxy a login request
		private void ProxyLogin(StreamReader reader, StreamWriter writer) { lock(this) {
			string line;
			int contentLength = 0;

			// read HTTP header
			do 
			{
				// read one line of the header
				line = reader.ReadLine();

				// check for premature EOF
				if (line == null)
					throw new Exception("EOF in client HTTP header");

				// look for Content-Length
				Match match = (new Regex(@"Content-Length: (\d+)$")).Match(line);
				if (match.Success)
					contentLength = Convert.ToInt32(match.Groups[1].Captures[0].ToString());
			} while (line != "");
			
			// read the HTTP body into a buffer
			char[] content = new char[contentLength];
			reader.Read(content, 0, contentLength);
			 //System.Text.Encoding enc = System.Text.Encoding.ASCII;
			XmlRpcRequest request = (XmlRpcRequest)(new XmlRpcRequestDeserializer()).Deserialize(new String(content));
			Hashtable requestData = (Hashtable)request.Params[0];
			
			string first;
			string last;
			LLUUID Agent;
			LLUUID Session;
			
			//get login name
			if(requestData.Contains("first"))
			{
				first = (string)requestData["first"];
			}
			else
			{
				first = "test";
			}
			if(requestData.Contains("last"))
			{
				last = (string)requestData["last"];
			}
			else
			{
				last = "User"+NumClients.ToString();
			}
			NumClients++;
			
			//create a agent and session LLUUID
			int AgentRand = this.RandomClass.Next(1,9999);
			Agent = new LLUUID("99998888-"+AgentRand.ToString("0000")+"-4f52-8ec1-0b1d5cd6aead");
			int SessionRand = this.RandomClass.Next(1,999);
			Session = new LLUUID("aaaabbbb-8932-"+SessionRand.ToString("0000")+"-8664-58f53e442797");
			
	
			StreamReader SR;
			string ResponseString = "";
    		string lines;
    		SR=File.OpenText("new-login.dat");
    		
    		lines=SR.ReadLine();
    		
    		while(lines != "end-mfile")
    		{
    		
    		ResponseString += lines;
    		lines = SR.ReadLine();
    		}
    		SR.Close();
			
			XmlRpcResponse response =(XmlRpcResponse)(new XmlRpcResponseDeserializer()).Deserialize(ResponseString);
			Hashtable responseData = (Hashtable)response.Value;
			
			responseData["agent_id"] = Agent.ToStringHyphenated();
			responseData["session_id"] = Session.ToStringHyphenated();
			ArrayList InventoryList = (ArrayList) responseData["inventory-skeleton"];
			Hashtable Inventory1 = (Hashtable)InventoryList[0];
			Hashtable Inventory2 = (Hashtable)InventoryList[1];
			LLUUID BaseFolderID = LLUUID.Random();
			LLUUID InventoryFolderID = LLUUID.Random();
			Inventory2["name"] = "Base";
			Inventory2["folder_id"] = BaseFolderID.ToStringHyphenated();
			Inventory1["folder_id"] = InventoryFolderID.ToStringHyphenated();
			
			ArrayList InventoryRoot = (ArrayList) responseData["inventory-root"];
			Hashtable Inventoryroot = (Hashtable)InventoryRoot[0];
			Inventoryroot["folder_id"] = InventoryFolderID.ToStringHyphenated();
			
				
			//copy data to login object
			lock(Login)
			{
				Login.First = first;
				Login.Last = last;
				Login.Agent = Agent;
				Login.Session = Session;
				Login.BaseFolder = BaseFolderID;
				Login.InventoryFolder = InventoryFolderID;
			}
			
			// forward the XML-RPC response to the client
            writer.WriteLine("HTTP/1.0 200 OK");
            writer.WriteLine("Content-type: text/xml");
            writer.WriteLine();
			
			XmlTextWriter responseWriter = new XmlTextWriter(writer);
			XmlRpcResponseSerializer.Singleton.Serialize(responseWriter, response);
			responseWriter.Close();
			}
		}
	}
}