/* * 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 OpenSimulator 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.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.HttpServer { public delegate XmlRpcResponse OSHttpXmlRpcProcessor(XmlRpcRequest request); public class OSHttpXmlRpcHandler: OSHttpHandler { private static readonly ILog _log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); /// <summary> /// XmlRpcMethodMatch tries to reify (deserialize) an incoming /// XmlRpc request (and posts it to the "whiteboard") and /// checks whether the method name is one we are interested /// in. /// </summary> /// <returns>true if the handler is interested in the content; /// false otherwise</returns> protected bool XmlRpcMethodMatch(OSHttpRequest req) { XmlRpcRequest xmlRpcRequest = null; // check whether req is already reified // if not: reify (and post to whiteboard) try { if (req.Whiteboard.ContainsKey("xmlrequest")) { xmlRpcRequest = req.Whiteboard["xmlrequest"] as XmlRpcRequest; } else { StreamReader body = new StreamReader(req.InputStream); string requestBody = body.ReadToEnd(); xmlRpcRequest = (XmlRpcRequest)(new XmlRpcRequestDeserializer()).Deserialize(requestBody); req.Whiteboard["xmlrequest"] = xmlRpcRequest; } } catch (XmlException) { _log.ErrorFormat("[OSHttpXmlRpcHandler] failed to deserialize XmlRpcRequest from {0}", req.ToString()); return false; } // check against methodName if ((null != xmlRpcRequest) && !String.IsNullOrEmpty(xmlRpcRequest.MethodName) && xmlRpcRequest.MethodName == _methodName) { _log.DebugFormat("[OSHttpXmlRpcHandler] located handler {0} for {1}", _methodName, req.ToString()); return true; } return false; } // contains handler for processing XmlRpc Request private XmlRpcMethod _handler; // contains XmlRpc method name private string _methodName; /// <summary> /// Instantiate an XmlRpc handler. /// </summary> /// <param name="handler">XmlRpcMethod /// delegate</param> /// <param name="methodName">XmlRpc method name</param> /// <param name="path">XmlRpc path prefix (regular expression)</param> /// <param name="headers">Dictionary with header names and /// regular expressions to match content of headers</param> /// <param name="whitelist">IP whitelist of remote end points /// to accept (regular expression)</param> /// <remarks> /// Except for handler and methodName, all other parameters /// can be null, in which case they are not taken into account /// when the handler is being looked up. /// </remarks> public OSHttpXmlRpcHandler(XmlRpcMethod handler, string methodName, Regex path, Dictionary<string, Regex> headers, Regex whitelist) : base(new Regex(@"^POST$", RegexOptions.IgnoreCase | RegexOptions.Compiled), path, null, headers, new Regex(@"^(text|application)/xml", RegexOptions.IgnoreCase | RegexOptions.Compiled), whitelist) { _handler = handler; _methodName = methodName; } /// <summary> /// Instantiate an XmlRpc handler. /// </summary> /// <param name="handler">XmlRpcMethod /// delegate</param> /// <param name="methodName">XmlRpc method name</param> public OSHttpXmlRpcHandler(XmlRpcMethod handler, string methodName) : this(handler, methodName, null, null, null) { } /// <summary> /// Invoked by OSHttpRequestPump. /// </summary> public override OSHttpHandlerResult Process(OSHttpRequest request) { XmlRpcResponse xmlRpcResponse; string responseString; // check whether we are interested in this request if (!XmlRpcMethodMatch(request)) return OSHttpHandlerResult.Pass; OSHttpResponse resp = new OSHttpResponse(request); try { // reified XmlRpcRequest must still be on the whiteboard XmlRpcRequest xmlRpcRequest = request.Whiteboard["xmlrequest"] as XmlRpcRequest; xmlRpcResponse = _handler(xmlRpcRequest); responseString = XmlRpcResponseSerializer.Singleton.Serialize(xmlRpcResponse); resp.ContentType = "text/xml"; byte[] buffer = Encoding.UTF8.GetBytes(responseString); resp.SendChunked = false; resp.ContentLength = buffer.Length; resp.ContentEncoding = Encoding.UTF8; resp.Body.Write(buffer, 0, buffer.Length); resp.Body.Flush(); resp.Send(); } catch (Exception ex) { _log.WarnFormat("[OSHttpXmlRpcHandler]: Error: {0}", ex.Message); return OSHttpHandlerResult.Pass; } return OSHttpHandlerResult.Done; } } }