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Melanie Thielker
291
OpenSim/Framework/Servers/HttpServer/RestSessionService.cs
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291
OpenSim/Framework/Servers/HttpServer/RestSessionService.cs
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/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.IO;
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using System.Net;
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using System.Reflection;
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using System.Text;
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using System.Xml;
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using System.Xml.Serialization;
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using log4net;
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namespace OpenSim.Framework.Servers.HttpServer
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{
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public class RestSessionObject<TRequest>
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{
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private string sid;
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private string aid;
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private TRequest request_body;
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public string SessionID
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{
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get { return sid; }
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set { sid = value; }
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}
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public string AvatarID
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{
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get { return aid; }
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set { aid = value; }
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}
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public TRequest Body
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{
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get { return request_body; }
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set { request_body = value; }
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}
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}
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public class SynchronousRestSessionObjectPoster<TRequest, TResponse>
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{
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public static TResponse BeginPostObject(string verb, string requestUrl, TRequest obj, string sid, string aid)
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{
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RestSessionObject<TRequest> sobj = new RestSessionObject<TRequest>();
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sobj.SessionID = sid;
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sobj.AvatarID = aid;
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sobj.Body = obj;
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Type type = typeof(RestSessionObject<TRequest>);
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WebRequest request = WebRequest.Create(requestUrl);
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request.Method = verb;
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request.ContentType = "text/xml";
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MemoryStream buffer = new MemoryStream();
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XmlWriterSettings settings = new XmlWriterSettings();
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settings.Encoding = Encoding.UTF8;
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using (XmlWriter writer = XmlWriter.Create(buffer, settings))
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{
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XmlSerializer serializer = new XmlSerializer(type);
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serializer.Serialize(writer, sobj);
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writer.Flush();
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}
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int length = (int)buffer.Length;
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request.ContentLength = length;
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Stream requestStream = request.GetRequestStream();
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requestStream.Write(buffer.ToArray(), 0, length);
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TResponse deserial = default(TResponse);
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using (WebResponse resp = request.GetResponse())
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{
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XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
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deserial = (TResponse)deserializer.Deserialize(resp.GetResponseStream());
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}
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return deserial;
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}
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}
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public class RestSessionObjectPosterResponse<TRequest, TResponse>
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{
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public ReturnResponse<TResponse> ResponseCallback;
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public void BeginPostObject(string requestUrl, TRequest obj, string sid, string aid)
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{
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BeginPostObject("POST", requestUrl, obj, sid, aid);
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}
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public void BeginPostObject(string verb, string requestUrl, TRequest obj, string sid, string aid)
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{
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RestSessionObject<TRequest> sobj = new RestSessionObject<TRequest>();
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sobj.SessionID = sid;
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sobj.AvatarID = aid;
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sobj.Body = obj;
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Type type = typeof(RestSessionObject<TRequest>);
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WebRequest request = WebRequest.Create(requestUrl);
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request.Method = verb;
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request.ContentType = "text/xml";
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request.Timeout = 10000;
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MemoryStream buffer = new MemoryStream();
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XmlWriterSettings settings = new XmlWriterSettings();
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settings.Encoding = Encoding.UTF8;
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using (XmlWriter writer = XmlWriter.Create(buffer, settings))
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{
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XmlSerializer serializer = new XmlSerializer(type);
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serializer.Serialize(writer, sobj);
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writer.Flush();
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}
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int length = (int)buffer.Length;
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request.ContentLength = length;
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Stream requestStream = request.GetRequestStream();
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requestStream.Write(buffer.ToArray(), 0, length);
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requestStream.Close();
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// IAsyncResult result = request.BeginGetResponse(AsyncCallback, request);
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request.BeginGetResponse(AsyncCallback, request);
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}
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private void AsyncCallback(IAsyncResult result)
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{
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WebRequest request = (WebRequest)result.AsyncState;
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using (WebResponse resp = request.EndGetResponse(result))
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{
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TResponse deserial;
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XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
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Stream stream = resp.GetResponseStream();
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// This is currently a bad debug stanza since it gobbles us the response...
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// StreamReader reader = new StreamReader(stream);
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// m_log.DebugFormat("[REST OBJECT POSTER RESPONSE]: Received {0}", reader.ReadToEnd());
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deserial = (TResponse)deserializer.Deserialize(stream);
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if (deserial != null && ResponseCallback != null)
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{
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ResponseCallback(deserial);
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}
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}
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}
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}
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public delegate bool CheckIdentityMethod(string sid, string aid);
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public class RestDeserialiseSecureHandler<TRequest, TResponse> : BaseRequestHandler, IStreamHandler
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where TRequest : new()
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{
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private static readonly ILog m_log
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= LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private RestDeserialiseMethod<TRequest, TResponse> m_method;
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private CheckIdentityMethod m_smethod;
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public RestDeserialiseSecureHandler(
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string httpMethod, string path,
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RestDeserialiseMethod<TRequest, TResponse> method, CheckIdentityMethod smethod)
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: base(httpMethod, path)
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{
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m_smethod = smethod;
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m_method = method;
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}
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public void Handle(string path, Stream request, Stream responseStream,
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OSHttpRequest httpRequest, OSHttpResponse httpResponse)
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{
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RestSessionObject<TRequest> deserial = default(RestSessionObject<TRequest>);
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bool fail = false;
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using (XmlTextReader xmlReader = new XmlTextReader(request))
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{
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try
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{
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XmlSerializer deserializer = new XmlSerializer(typeof(RestSessionObject<TRequest>));
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deserial = (RestSessionObject<TRequest>)deserializer.Deserialize(xmlReader);
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}
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catch (Exception e)
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{
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m_log.Error("[REST]: Deserialization problem. Ignoring request. " + e);
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fail = true;
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}
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}
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TResponse response = default(TResponse);
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if (!fail && m_smethod(deserial.SessionID, deserial.AvatarID))
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{
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response = m_method(deserial.Body);
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}
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using (XmlWriter xmlWriter = XmlTextWriter.Create(responseStream))
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{
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XmlSerializer serializer = new XmlSerializer(typeof(TResponse));
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serializer.Serialize(xmlWriter, response);
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}
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}
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}
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public delegate bool CheckTrustedSourceMethod(IPEndPoint peer);
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public class RestDeserialiseTrustedHandler<TRequest, TResponse> : BaseRequestHandler, IStreamHandler
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where TRequest : new()
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{
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private static readonly ILog m_log
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= LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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/// <summary>
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/// The operation to perform once trust has been established.
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/// </summary>
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/// <param name="httpMethod"></param>
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/// <param name="path"></param>
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/// <param name="method"></param>
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/// <param name="tmethod"></param>
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private RestDeserialiseMethod<TRequest, TResponse> m_method;
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/// <summary>
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/// The method used to check whether a request is trusted.
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/// </summary>
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private CheckTrustedSourceMethod m_tmethod;
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public RestDeserialiseTrustedHandler(string httpMethod, string path, RestDeserialiseMethod<TRequest, TResponse> method, CheckTrustedSourceMethod tmethod)
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: base(httpMethod, path)
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{
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m_tmethod = tmethod;
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m_method = method;
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}
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public void Handle(string path, Stream request, Stream responseStream,
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OSHttpRequest httpRequest, OSHttpResponse httpResponse)
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{
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TRequest deserial = default(TRequest);
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bool fail = false;
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using (XmlTextReader xmlReader = new XmlTextReader(request))
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{
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try
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{
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XmlSerializer deserializer = new XmlSerializer(typeof(TRequest));
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deserial = (TRequest)deserializer.Deserialize(xmlReader);
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}
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catch (Exception e)
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{
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m_log.Error("[REST]: Deserialization problem. Ignoring request. " + e);
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fail = true;
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}
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}
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TResponse response = default(TResponse);
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if (!fail && m_tmethod(httpRequest.RemoteIPEndPoint))
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{
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response = m_method(deserial);
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}
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using (XmlWriter xmlWriter = XmlTextWriter.Create(responseStream))
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{
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XmlSerializer serializer = new XmlSerializer(typeof(TResponse));
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serializer.Serialize(xmlWriter, response);
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}
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}
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}
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}
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