oops...forgot to svn add OSHttpHttpHandler.cs last week.

NOTE: this code is work-in-progress, it's not live. it's so far
harmless and just wants to play. it should not bite anyone (yeah,
that's what they all say, i know...)

OpenSim/Framework/Servers/OSHttpHttpHandler.cs

@@ -0,0 +1,145 @@
+/*
+ * 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 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.Reflection;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Xml;
+using log4net;
+using Nwc.XmlRpc;
+
+namespace OpenSim.Framework.Servers
+{
+    public delegate XmlRpcResponse OSHttpHttpProcessor(XmlRpcRequest request);
+
+    public class OSHttpHttpHandler: OSHttpHandler
+    {
+        private static readonly ILog _log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        // contains handler for processing HTTP Request
+        private GenericHTTPMethod _handler;
+
+        /// <summary>
+        /// Instantiate an HTTP handler.
+        /// </summary>
+        /// <param name="handler">a GenericHTTPMethod</param>
+        /// <param name="method">null or HTTP method regex</param>
+        /// <param name="path">null or path regex</param>
+        /// <param name="query">null or dictionary with query regexs</param>
+        /// <param name="headers">null or dictionary with header
+        /// regexs</param>
+        /// <param name="whitelist">null or IP address whitelist</param>
+        public OSHttpHttpHandler(GenericHTTPMethod handler, Regex method, Regex path, 
+                                 Dictionary<string, Regex> query,
+                                 Dictionary<string, Regex> headers, Regex whitelist)
+            : base(method, path, query, headers, new Regex(@"^text/html", RegexOptions.IgnoreCase | RegexOptions.Compiled),
+                   whitelist)
+        {
+            _handler = handler;
+        }
+
+        /// <summary>
+        /// Instantiate an HTTP handler.
+        /// </summary>
+        /// <param name="handler">a GenericHTTPMethod</param>
+        public OSHttpHttpHandler(GenericHTTPMethod handler) 
+            : this(handler, new Regex(@"^GET$", RegexOptions.IgnoreCase | RegexOptions.Compiled), null, null, null, null)
+        {
+        }
+
+        /// <summary>
+        /// Invoked by OSHttpRequestPump.
+        /// </summary>
+        public override OSHttpHandlerResult Process(OSHttpRequest request) 
+        {
+            // call handler method
+            Hashtable responseData = _handler(request.Query);
+
+            int responseCode = (int)responseData["int_response_code"];
+            string responseString = (string)responseData["str_response_string"];
+            string contentType = (string)responseData["content_type"];
+
+            //Even though only one other part of the entire code uses HTTPHandlers, we shouldn't expect this
+            //and should check for NullReferenceExceptions
+
+            if (string.IsNullOrEmpty(contentType))
+            {
+                contentType = "text/html";
+            }
+
+            OSHttpResponse response = new OSHttpResponse(request);
+
+            // We're forgoing the usual error status codes here because the client
+            // ignores anything but 200 and 301
+
+            response.StatusCode = (int)OSHttpStatusCode.SuccessOk;
+
+            if (responseCode == (int)OSHttpStatusCode.RedirectMovedPermanently)
+            {
+                response.RedirectLocation = (string)responseData["str_redirect_location"];
+                response.StatusCode = responseCode;
+            }
+
+            response.AddHeader("Content-type", contentType);
+            
+            byte[] buffer;
+
+            if (!contentType.Contains("image"))
+            {
+                buffer = Encoding.UTF8.GetBytes(responseString);
+            }
+            else
+            {
+                buffer = Convert.FromBase64String(responseString);
+            }
+
+            response.SendChunked = false;
+            response.ContentLength64 = buffer.Length;
+            response.ContentEncoding = Encoding.UTF8;
+
+            try
+            {
+                response.Body.Write(buffer, 0, buffer.Length);
+            }
+            catch (Exception ex)
+            {
+                _log.ErrorFormat("[OSHttpHttpHandler]: Error:  {0}", ex.Message);
+            }
+            finally
+            {
+                response.Send();
+            }
+
+            return OSHttpHandlerResult.Done;
+        }
+    }
+}