Renamed the Servers directory to OpenSim.Servers

OpenSim.Servers/BaseHttpServer.cs

@@ -0,0 +1,224 @@
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading;
+//using OpenSim.CAPS;
+using Nwc.XmlRpc;
+using System.Collections;
+
+namespace OpenSim.Servers
+{
+    public class BaseHttpServer
+    {
+        protected Thread m_workerThread;
+        protected HttpListener m_httpListener;
+        protected Dictionary<string, RestMethod> m_restHandlers = new Dictionary<string, RestMethod>();
+        protected Dictionary<string, XmlRpcMethod> m_rpcHandlers = new Dictionary<string, XmlRpcMethod>();
+        protected int m_port;
+
+        public BaseHttpServer(int port)
+        {
+            m_port = port;
+        }
+
+        public bool AddRestHandler(string method, string path, RestMethod handler)
+        {
+            string methodKey = String.Format("{0}: {1}", method, path);
+                
+            if (!this.m_restHandlers.ContainsKey(methodKey))
+            {
+                this.m_restHandlers.Add(methodKey, handler);
+                return true;
+            }
+
+            //must already have a handler for that path so return false
+            return false;
+        }
+
+        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;
+        }
+
+        protected virtual string ProcessXMLRPCMethod(string methodName, XmlRpcRequest request)
+        {
+            XmlRpcResponse response;
+            
+            XmlRpcMethod method;
+            if( this.m_rpcHandlers.TryGetValue( methodName, out method ) )
+            {
+                response = method(request);
+            }
+            else
+            {
+                response = new XmlRpcResponse();
+                Hashtable unknownMethodError = new Hashtable();
+                unknownMethodError["reason"] = "XmlRequest"; ;
+                unknownMethodError["message"] = "Unknown Rpc request";
+                unknownMethodError["login"] = "false";
+                response.Value = unknownMethodError;
+            }
+
+            return XmlRpcResponseSerializer.Singleton.Serialize(response);
+        }
+
+        protected virtual string ParseREST(string request, string path, string method)
+        {
+            string response;
+            RestMethod handler;
+            
+            string requestKey = String.Format("{0}: {1}", method, path);
+                    
+            string bestMatch = String.Empty;
+            foreach( string currentKey in m_restHandlers.Keys )
+            {
+                if( requestKey.StartsWith( currentKey ))
+                {
+                    if(currentKey.Length > bestMatch.Length )
+                    {
+                        bestMatch = currentKey;
+                    }
+                }
+            }
+            
+            if (m_restHandlers.TryGetValue(bestMatch, out handler))
+            {
+                response = handler(request, path);
+            
+            }
+            else
+            {
+                response = String.Empty;
+            }
+
+            return response;
+        }
+
+        protected virtual string ParseLLSDXML(string requestBody)
+        {
+            // dummy function for now - IMPLEMENT ME!
+            return "";
+        }
+
+        protected virtual string ParseXMLRPC(string requestBody)
+        {
+            string responseString = String.Empty;
+
+            try
+            {
+                XmlRpcRequest request = (XmlRpcRequest)(new XmlRpcRequestDeserializer()).Deserialize(requestBody);
+
+                string methodName = request.MethodName;
+
+                responseString = ProcessXMLRPCMethod(methodName, request );
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e.ToString());
+            }
+            return responseString;
+        }
+
+        public virtual void HandleRequest(Object stateinfo)
+        {
+            HttpListenerContext context = (HttpListenerContext)stateinfo;
+
+            HttpListenerRequest request = context.Request;
+            HttpListenerResponse response = context.Response;
+
+            response.KeepAlive = false;
+            response.SendChunked = false;
+
+            System.IO.Stream body = request.InputStream;
+            System.Text.Encoding encoding = System.Text.Encoding.UTF8;
+            System.IO.StreamReader reader = new System.IO.StreamReader(body, encoding);
+
+            string requestBody = reader.ReadToEnd();
+            body.Close();
+            reader.Close();
+
+            //Console.WriteLine(request.HttpMethod + " " + request.RawUrl + " Http/" + request.ProtocolVersion.ToString() + " content type: " + request.ContentType);
+            //Console.WriteLine(requestBody);
+
+            string responseString = "";
+            switch (request.ContentType)
+            {
+                case "text/xml":
+                    // must be XML-RPC, so pass to the XML-RPC parser
+
+                    responseString = ParseXMLRPC(requestBody);
+                    responseString = Regex.Replace(responseString, "utf-16", "utf-8");
+                    
+                    response.AddHeader("Content-type", "text/xml");
+                    break;
+
+                case "application/xml":
+                    // probably LLSD we hope, otherwise it should be ignored by the parser
+                    responseString = ParseLLSDXML(requestBody);
+                    response.AddHeader("Content-type", "application/xml");
+                    break;
+
+                case "application/x-www-form-urlencoded":
+                    // a form data POST so send to the REST parser
+                    responseString = ParseREST(requestBody, request.RawUrl, request.HttpMethod);
+                    response.AddHeader("Content-type", "text/html");
+                    break;
+
+                case null:
+                    // must be REST or invalid crap, so pass to the REST parser
+                    responseString = ParseREST(requestBody, request.RawUrl, request.HttpMethod);
+                    response.AddHeader("Content-type", "text/html");
+                    break;
+
+            }
+
+            byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
+            System.IO.Stream output = response.OutputStream;
+            response.SendChunked = false;
+            response.ContentLength64 = buffer.Length;
+            output.Write(buffer, 0, buffer.Length);
+            output.Close();
+        }
+
+        public void Start()
+        {
+                OpenSim.Framework.Console.MainConsole.Instance.WriteLine("BaseHttpServer.cs: Starting up HTTP Server");
+
+                m_workerThread = new Thread(new ThreadStart(StartHTTP));
+                m_workerThread.IsBackground = true;
+                m_workerThread.Start();
+        }
+
+        private void StartHTTP()
+        {
+            try
+            {
+                OpenSim.Framework.Console.MainConsole.Instance.WriteLine("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)
+            {
+                OpenSim.Framework.Console.MainConsole.Instance.WriteLine(e.Message);
+            }
+        }
+    }
+}