opensim-development – 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.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Xml;
using Nini.Config;
using log4net;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Server.Base;
using OpenSim.Services.Interfaces;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Server.Handlers.Base;
using GridRegion = OpenSim.Services.Interfaces.GridRegion;
namespace OpenSim.Server.Handlers.MapImage
{
public class MapAddServiceConnector : ServiceConnector
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private IMapImageService m_MapService;
private IGridService m_GridService;
private string m_ConfigName = "MapImageService";
public MapAddServiceConnector(IConfigSource config, IHttpServer server, string configName) :
base(config, server, configName)
{
IConfig serverConfig = config.Configs[m_ConfigName];
if (serverConfig == null)
throw new Exception(String.Format("No section {0} in config file", m_ConfigName));
string mapService = serverConfig.GetString("LocalServiceModule",
String.Empty);
if (mapService == String.Empty)
throw new Exception("No LocalServiceModule in config file");
Object[] args = new Object[] { config };
m_MapService = ServerUtils.LoadPlugin<IMapImageService>(mapService, args);
string gridService = serverConfig.GetString("GridService", String.Empty);
if (gridService != string.Empty)
m_GridService = ServerUtils.LoadPlugin<IGridService>(gridService, args);
if (m_GridService != null)
m_log.InfoFormat("[MAP IMAGE HANDLER]: GridService check is ON");
else
m_log.InfoFormat("[MAP IMAGE HANDLER]: GridService check is OFF");
bool proxy = serverConfig.GetBoolean("HasProxy", false);
server.AddStreamHandler(new MapServerPostHandler(m_MapService, m_GridService, proxy));
}
}
class MapServerPostHandler : BaseStreamHandler
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private IMapImageService m_MapService;
private IGridService m_GridService;
bool m_Proxy;
public MapServerPostHandler(IMapImageService service, IGridService grid, bool proxy) :
base("POST", "/map")
{
m_MapService = service;
m_GridService = grid;
m_Proxy = proxy;
}
protected override byte[] ProcessRequest(string path, Stream requestData, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
{
// m_log.DebugFormat("[MAP SERVICE IMAGE HANDLER]: Received {0}", path);
StreamReader sr = new StreamReader(requestData);
string body = sr.ReadToEnd();
sr.Close();
body = body.Trim();
try
{
Dictionary<string, object> request = ServerUtils.ParseQueryString(body);
if (!request.ContainsKey("X") || !request.ContainsKey("Y") || !request.ContainsKey("DATA"))
{
httpResponse.StatusCode = (int)OSHttpStatusCode.ClientErrorBadRequest;
return FailureResult("Bad request.");
}
uint x = 0, y = 0;
UInt32.TryParse(request["X"].ToString(), out x);
UInt32.TryParse(request["Y"].ToString(), out y);
m_log.DebugFormat("[MAP ADD SERVER CONNECTOR]: Received map data for region at {0}-{1}", x, y);
// string type = "image/jpeg";
//
// if (request.ContainsKey("TYPE"))
// type = request["TYPE"].ToString();
if (m_GridService != null)
{
System.Net.IPAddress ipAddr = GetCallerIP(httpRequest);
GridRegion r = m_GridService.GetRegionByPosition(UUID.Zero, (int)Util.RegionToWorldLoc(x), (int)Util.RegionToWorldLoc(y));
if (r != null)
{
if (r.ExternalEndPoint.Address.ToString() != ipAddr.ToString())
{
m_log.WarnFormat("[MAP IMAGE HANDLER]: IP address {0} may be trying to impersonate region in IP {1}", ipAddr, r.ExternalEndPoint.Address);
return FailureResult("IP address of caller does not match IP address of registered region");
}
}
else
{
m_log.WarnFormat("[MAP IMAGE HANDLER]: IP address {0} may be rogue. Region not found at coordinates {1}-{2}",
ipAddr, x, y);
return FailureResult("Region not found at given coordinates");
}
}
byte[] data = Convert.FromBase64String(request["DATA"].ToString());
string reason = string.Empty;
bool result = m_MapService.AddMapTile((int)x, (int)y, data, out reason);
if (result)
return SuccessResult();
else
return FailureResult(reason);
}
catch (Exception e)
{
m_log.ErrorFormat("[MAP SERVICE IMAGE HANDLER]: Exception {0} {1}", e.Message, e.StackTrace);
}
return FailureResult("Unexpected server error");
}
private byte[] SuccessResult()
{
XmlDocument doc = new XmlDocument();
XmlNode xmlnode = doc.CreateNode(XmlNodeType.XmlDeclaration,
"", "");
doc.AppendChild(xmlnode);
XmlElement rootElement = doc.CreateElement("", "ServerResponse",
"");
doc.AppendChild(rootElement);
XmlElement result = doc.CreateElement("", "Result", "");
result.AppendChild(doc.CreateTextNode("Success"));
rootElement.AppendChild(result);
return DocToBytes(doc);
}
private byte[] FailureResult(string msg)
{
XmlDocument doc = new XmlDocument();
XmlNode xmlnode = doc.CreateNode(XmlNodeType.XmlDeclaration,
"", "");
doc.AppendChild(xmlnode);
XmlElement rootElement = doc.CreateElement("", "ServerResponse",
"");
doc.AppendChild(rootElement);
XmlElement result = doc.CreateElement("", "Result", "");
result.AppendChild(doc.CreateTextNode("Failure"));
rootElement.AppendChild(result);
XmlElement message = doc.CreateElement("", "Message", "");
message.AppendChild(doc.CreateTextNode(msg));
rootElement.AppendChild(message);
return DocToBytes(doc);
}
private byte[] DocToBytes(XmlDocument doc)
{
MemoryStream ms = new MemoryStream();
XmlTextWriter xw = new XmlTextWriter(ms, null);
xw.Formatting = Formatting.Indented;
doc.WriteTo(xw);
xw.Flush();
return ms.ToArray();
}
private System.Net.IPAddress GetCallerIP(IOSHttpRequest request)
{
if (!m_Proxy)
return request.RemoteIPEndPoint.Address;
// We're behind a proxy
string xff = "X-Forwarded-For";
string xffValue = request.Headers[xff.ToLower()];
if (xffValue == null || (xffValue != null && xffValue == string.Empty))
xffValue = request.Headers[xff];
if (xffValue == null || (xffValue != null && xffValue == string.Empty))
{
m_log.WarnFormat("[MAP IMAGE HANDLER]: No XFF header");
return request.RemoteIPEndPoint.Address;
}
System.Net.IPEndPoint ep = Util.GetClientIPFromXFF(xffValue);
if (ep != null)
return ep.Address;
// Oops
return request.RemoteIPEndPoint.Address;
}
}
}