clockwerk-opensim-stable – Rev 1
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/*
* 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.IO;
using System.Net;
using System.Reflection;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using log4net;
namespace OpenSim.Framework.Servers.HttpServer
{
public class RestSessionObject<TRequest>
{
private string sid;
private string aid;
private TRequest request_body;
public string SessionID
{
get { return sid; }
set { sid = value; }
}
public string AvatarID
{
get { return aid; }
set { aid = value; }
}
public TRequest Body
{
get { return request_body; }
set { request_body = value; }
}
}
public class SynchronousRestSessionObjectPoster<TRequest, TResponse>
{
public static TResponse BeginPostObject(string verb, string requestUrl, TRequest obj, string sid, string aid)
{
RestSessionObject<TRequest> sobj = new RestSessionObject<TRequest>();
sobj.SessionID = sid;
sobj.AvatarID = aid;
sobj.Body = obj;
Type type = typeof(RestSessionObject<TRequest>);
WebRequest request = WebRequest.Create(requestUrl);
request.Method = verb;
request.ContentType = "text/xml";
request.Timeout = 20000;
MemoryStream buffer = new MemoryStream();
XmlWriterSettings settings = new XmlWriterSettings();
settings.Encoding = Encoding.UTF8;
using (XmlWriter writer = XmlWriter.Create(buffer, settings))
{
XmlSerializer serializer = new XmlSerializer(type);
serializer.Serialize(writer, sobj);
writer.Flush();
}
int length = (int)buffer.Length;
request.ContentLength = length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(buffer.ToArray(), 0, length);
buffer.Close();
requestStream.Close();
TResponse deserial = default(TResponse);
using (WebResponse resp = request.GetResponse())
{
XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
using (Stream respStream = resp.GetResponseStream())
deserial = (TResponse)deserializer.Deserialize(respStream);
}
return deserial;
}
}
public class RestSessionObjectPosterResponse<TRequest, TResponse>
{
public ReturnResponse<TResponse> ResponseCallback;
public void BeginPostObject(string requestUrl, TRequest obj, string sid, string aid)
{
BeginPostObject("POST", requestUrl, obj, sid, aid);
}
public void BeginPostObject(string verb, string requestUrl, TRequest obj, string sid, string aid)
{
RestSessionObject<TRequest> sobj = new RestSessionObject<TRequest>();
sobj.SessionID = sid;
sobj.AvatarID = aid;
sobj.Body = obj;
Type type = typeof(RestSessionObject<TRequest>);
WebRequest request = WebRequest.Create(requestUrl);
request.Method = verb;
request.ContentType = "text/xml";
request.Timeout = 10000;
MemoryStream buffer = new MemoryStream();
XmlWriterSettings settings = new XmlWriterSettings();
settings.Encoding = Encoding.UTF8;
using (XmlWriter writer = XmlWriter.Create(buffer, settings))
{
XmlSerializer serializer = new XmlSerializer(type);
serializer.Serialize(writer, sobj);
writer.Flush();
}
buffer.Close();
int length = (int)buffer.Length;
request.ContentLength = length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(buffer.ToArray(), 0, length);
requestStream.Close();
// IAsyncResult result = request.BeginGetResponse(AsyncCallback, request);
request.BeginGetResponse(AsyncCallback, request);
}
private void AsyncCallback(IAsyncResult result)
{
WebRequest request = (WebRequest)result.AsyncState;
using (WebResponse resp = request.EndGetResponse(result))
{
TResponse deserial;
XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
Stream stream = resp.GetResponseStream();
// This is currently a bad debug stanza since it gobbles us the response...
// StreamReader reader = new StreamReader(stream);
// m_log.DebugFormat("[REST OBJECT POSTER RESPONSE]: Received {0}", reader.ReadToEnd());
deserial = (TResponse)deserializer.Deserialize(stream);
if (stream != null)
stream.Close();
if (deserial != null && ResponseCallback != null)
{
ResponseCallback(deserial);
}
}
}
}
public delegate bool CheckIdentityMethod(string sid, string aid);
public class RestDeserialiseSecureHandler<TRequest, TResponse> : BaseOutputStreamHandler, IStreamHandler
where TRequest : new()
{
private static readonly ILog m_log
= LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private RestDeserialiseMethod<TRequest, TResponse> m_method;
private CheckIdentityMethod m_smethod;
public RestDeserialiseSecureHandler(
string httpMethod, string path,
RestDeserialiseMethod<TRequest, TResponse> method, CheckIdentityMethod smethod)
: base(httpMethod, path)
{
m_smethod = smethod;
m_method = method;
}
protected override void ProcessRequest(string path, Stream request, Stream responseStream,
IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
{
RestSessionObject<TRequest> deserial = default(RestSessionObject<TRequest>);
bool fail = false;
using (XmlTextReader xmlReader = new XmlTextReader(request))
{
try
{
XmlSerializer deserializer = new XmlSerializer(typeof(RestSessionObject<TRequest>));
deserial = (RestSessionObject<TRequest>)deserializer.Deserialize(xmlReader);
}
catch (Exception e)
{
m_log.Error("[REST]: Deserialization problem. Ignoring request. " + e);
fail = true;
}
}
TResponse response = default(TResponse);
if (!fail && m_smethod(deserial.SessionID, deserial.AvatarID))
{
response = m_method(deserial.Body);
}
using (XmlWriter xmlWriter = XmlTextWriter.Create(responseStream))
{
XmlSerializer serializer = new XmlSerializer(typeof(TResponse));
serializer.Serialize(xmlWriter, response);
}
}
}
public delegate bool CheckTrustedSourceMethod(IPEndPoint peer);
public class RestDeserialiseTrustedHandler<TRequest, TResponse> : BaseOutputStreamHandler, IStreamHandler
where TRequest : new()
{
private static readonly ILog m_log
= LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
/// <summary>
/// The operation to perform once trust has been established.
/// </summary>
private RestDeserialiseMethod<TRequest, TResponse> m_method;
/// <summary>
/// The method used to check whether a request is trusted.
/// </summary>
private CheckTrustedSourceMethod m_tmethod;
public RestDeserialiseTrustedHandler(string httpMethod, string path, RestDeserialiseMethod<TRequest, TResponse> method, CheckTrustedSourceMethod tmethod)
: base(httpMethod, path)
{
m_tmethod = tmethod;
m_method = method;
}
protected override void ProcessRequest(string path, Stream request, Stream responseStream,
IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
{
TRequest deserial = default(TRequest);
bool fail = false;
using (XmlTextReader xmlReader = new XmlTextReader(request))
{
try
{
XmlSerializer deserializer = new XmlSerializer(typeof(TRequest));
deserial = (TRequest)deserializer.Deserialize(xmlReader);
}
catch (Exception e)
{
m_log.Error("[REST]: Deserialization problem. Ignoring request. " + e);
fail = true;
}
}
TResponse response = default(TResponse);
if (!fail && m_tmethod(httpRequest.RemoteIPEndPoint))
{
response = m_method(deserial);
}
using (XmlWriter xmlWriter = XmlTextWriter.Create(responseStream))
{
XmlSerializer serializer = new XmlSerializer(typeof(TResponse));
serializer.Serialize(xmlWriter, response);
}
}
}
}
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