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/*
* Copyright (c) Contributors, http://www.openmetaverse.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using Nwc.XmlRpc;
using OpenSim.Framework.Console;
namespace OpenSim.Framework.Servers
{
public class BaseHttpServer
{
protected Thread m_workerThread;
protected HttpListener m_httpListener;
protected Dictionary<string, XmlRpcMethod> m_rpcHandlers = new Dictionary<string, XmlRpcMethod>();
protected Dictionary<string, IStreamHandler> m_streamHandlers = new Dictionary<string, IStreamHandler>();
protected int m_port;
protected bool m_firstcaps = true;
public BaseHttpServer(int port)
{
m_port = port;
}
public void AddStreamHandler( IStreamHandler handler)
{
string httpMethod = handler.HttpMethod;
string path = handler.Path;
string handlerKey = GetHandlerKey(httpMethod, path);
m_streamHandlers.Add(handlerKey, handler);
}
private static string GetHandlerKey(string httpMethod, string path)
{
return httpMethod + ":" + path;
}
public bool AddXmlRPCHandler(string method, XmlRpcMethod handler)
{
if (!this.m_rpcHandlers.ContainsKey(method))
{
this.m_rpcHandlers.Add(method, handler);
return true;
}
//must already have a handler for that path so return false
return false;
}
public virtual void HandleRequest(Object stateinfo)
{
HttpListenerContext context = (HttpListenerContext)stateinfo;
HttpListenerRequest request = context.Request;
HttpListenerResponse response = context.Response;
response.KeepAlive = false;
response.SendChunked = false;
string path = request.RawUrl;
string handlerKey = GetHandlerKey( request.HttpMethod, path );
IStreamHandler streamHandler;
if (TryGetStreamHandler( handlerKey, out streamHandler))
{
byte[] buffer = streamHandler.Handle(path, request.InputStream);
request.InputStream.Close();
response.ContentType = streamHandler.ContentType;
response.ContentLength64 = buffer.LongLength;
response.OutputStream.Write(buffer, 0, buffer.Length);
response.OutputStream.Close();
}
else
{
HandleXmlRpcRequests(request, response);
}
}
private bool TryGetStreamHandler(string handlerKey, out IStreamHandler streamHandler)
{
string bestMatch = null;
foreach (string pattern in m_streamHandlers.Keys)
{
if (handlerKey.StartsWith(pattern))
{
if (String.IsNullOrEmpty(bestMatch) || pattern.Length > bestMatch.Length)
{
bestMatch = pattern;
}
}
}
if (String.IsNullOrEmpty(bestMatch))
{
streamHandler = null;
return false;
}
else
{
streamHandler = m_streamHandlers[bestMatch];
return true;
}
}
private void HandleXmlRpcRequests(HttpListenerRequest request, HttpListenerResponse response)
{
Stream requestStream = request.InputStream;
Encoding encoding = Encoding.UTF8;
StreamReader reader = new StreamReader(requestStream, encoding);
string requestBody = reader.ReadToEnd();
reader.Close();
requestStream.Close();
XmlRpcRequest xmlRprcRequest = (XmlRpcRequest)(new XmlRpcRequestDeserializer()).Deserialize(requestBody);
string methodName = xmlRprcRequest.MethodName;
XmlRpcResponse xmlRpcResponse;
XmlRpcMethod method;
if (this.m_rpcHandlers.TryGetValue(methodName, out method))
{
xmlRpcResponse = method(xmlRprcRequest);
}
else
{
xmlRpcResponse = new XmlRpcResponse();
Hashtable unknownMethodError = new Hashtable();
unknownMethodError["reason"] = "XmlRequest"; ;
unknownMethodError["message"] = "Unknown Rpc Request ["+methodName+"]";
unknownMethodError["login"] = "false";
xmlRpcResponse.Value = unknownMethodError;
}
response.AddHeader("Content-type", "text/xml");
string responseString = XmlRpcResponseSerializer.Singleton.Serialize(xmlRpcResponse);
// This must be absolutely fuggliest hack in this project. Don't just stand there, DO SOMETHING!
responseString = Regex.Replace(responseString, "utf-16", "utf-8");
byte[] buffer = Encoding.UTF8.GetBytes(responseString);
response.SendChunked = false;
response.ContentLength64 = buffer.Length;
response.ContentEncoding = Encoding.UTF8;
response.OutputStream.Write(buffer, 0, buffer.Length);
response.OutputStream.Close();
}
public void Start()
{
MainLog.Instance.WriteLine(LogPriority.LOW, "BaseHttpServer.cs: Starting up HTTP Server");
m_workerThread = new Thread(new ThreadStart(StartHTTP));
m_workerThread.IsBackground = true;
m_workerThread.Start();
}
private void StartHTTP()
{
try
{
MainLog.Instance.WriteLine(LogPriority.LOW, "BaseHttpServer.cs: StartHTTP() - Spawned main thread OK");
m_httpListener = new HttpListener();
m_httpListener.Prefixes.Add("http://+:" + m_port + "/");
m_httpListener.Start();
HttpListenerContext context;
while (true)
{
context = m_httpListener.GetContext();
ThreadPool.QueueUserWorkItem(new WaitCallback(HandleRequest), context);
}
}
catch (Exception e)
{
MainLog.Instance.WriteLine(LogPriority.MEDIUM, e.Message);
}
}
public void RemoveStreamHandler(string httpMethod, string path)
{
m_streamHandlers.Remove(GetHandlerKey(httpMethod, path));
}
}
}
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