235 lines
9.1 KiB
C#
235 lines
9.1 KiB
C#
/*
|
|
* 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;
|
|
using System.Collections.Specialized;
|
|
using System.Reflection;
|
|
using System.IO;
|
|
using System.Web;
|
|
using log4net;
|
|
using Nini.Config;
|
|
using OpenMetaverse;
|
|
using OpenMetaverse.StructuredData;
|
|
using OpenSim.Framework;
|
|
using OpenSim.Framework.Servers;
|
|
using OpenSim.Framework.Servers.HttpServer;
|
|
using OpenSim.Region.Framework.Interfaces;
|
|
using OpenSim.Region.Framework.Scenes;
|
|
using OpenSim.Services.Interfaces;
|
|
using Caps = OpenSim.Framework.Capabilities.Caps;
|
|
|
|
namespace OpenSim.Region.CoreModules.Avatar.ObjectCaps
|
|
{
|
|
#region Stream Handler
|
|
|
|
public delegate byte[] StreamHandlerCallback(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse);
|
|
|
|
public class StreamHandler : BaseStreamHandler
|
|
{
|
|
StreamHandlerCallback m_callback;
|
|
|
|
public StreamHandler(string httpMethod, string path, StreamHandlerCallback callback)
|
|
: base(httpMethod, path)
|
|
{
|
|
m_callback = callback;
|
|
}
|
|
|
|
public override byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
|
|
{
|
|
return m_callback(path, request, httpRequest, httpResponse);
|
|
}
|
|
}
|
|
|
|
#endregion Stream Handler
|
|
|
|
public class GetTextureModule : IRegionModule
|
|
{
|
|
private static readonly ILog m_log =
|
|
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
|
|
private Scene m_scene;
|
|
private IAssetService m_assetService;
|
|
|
|
#region IRegionModule Members
|
|
|
|
public void Initialise(Scene pScene, IConfigSource pSource)
|
|
{
|
|
m_scene = pScene;
|
|
}
|
|
|
|
public void PostInitialise()
|
|
{
|
|
m_assetService = m_scene.RequestModuleInterface<IAssetService>();
|
|
m_scene.EventManager.OnRegisterCaps += RegisterCaps;
|
|
}
|
|
|
|
public void Close() { }
|
|
|
|
public string Name { get { return "GetTextureModule"; } }
|
|
public bool IsSharedModule { get { return false; } }
|
|
|
|
public void RegisterCaps(UUID agentID, Caps caps)
|
|
{
|
|
UUID capID = UUID.Random();
|
|
|
|
m_log.Info("[GETTEXTURE]: /CAPS/" + capID);
|
|
caps.RegisterHandler("GetTexture", new StreamHandler("GET", "/CAPS/" + capID, ProcessGetTexture));
|
|
}
|
|
|
|
#endregion
|
|
|
|
private byte[] ProcessGetTexture(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
|
|
{
|
|
// TODO: Change this to a config option
|
|
const string REDIRECT_URL = null;
|
|
|
|
// Try to parse the texture ID from the request URL
|
|
NameValueCollection query = HttpUtility.ParseQueryString(httpRequest.Url.Query);
|
|
string textureStr = query.GetOne("texture_id");
|
|
|
|
if (m_assetService == null)
|
|
{
|
|
m_log.Error("[GETTEXTURE]: Cannot fetch texture " + textureStr + " without an asset service");
|
|
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
|
|
return null;
|
|
}
|
|
|
|
UUID textureID;
|
|
if (!String.IsNullOrEmpty(textureStr) && UUID.TryParse(textureStr, out textureID))
|
|
{
|
|
//m_log.DebugFormat("[GETTEXTURE]: {0}", textureID);
|
|
AssetBase texture;
|
|
|
|
if (!String.IsNullOrEmpty(REDIRECT_URL))
|
|
{
|
|
// Only try to fetch locally cached textures. Misses are redirected
|
|
texture = m_assetService.GetCached(textureID.ToString());
|
|
|
|
if (texture != null)
|
|
{
|
|
if (texture.Type != (sbyte)AssetType.Texture)
|
|
{
|
|
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
|
|
httpResponse.Send();
|
|
return null;
|
|
}
|
|
SendTexture(httpRequest, httpResponse, texture);
|
|
}
|
|
else
|
|
{
|
|
string textureUrl = REDIRECT_URL + textureID.ToString();
|
|
m_log.Debug("[GETTEXTURE]: Redirecting texture request to " + textureUrl);
|
|
httpResponse.RedirectLocation = textureUrl;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Fetch locally or remotely. Misses return a 404
|
|
texture = m_assetService.Get(textureID.ToString());
|
|
|
|
if (texture != null)
|
|
{
|
|
if (texture.Type != (sbyte)AssetType.Texture)
|
|
{
|
|
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
|
|
httpResponse.Send();
|
|
return null;
|
|
}
|
|
SendTexture(httpRequest, httpResponse, texture);
|
|
}
|
|
else
|
|
{
|
|
m_log.Warn("[GETTEXTURE]: Texture " + textureID + " not found");
|
|
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
m_log.Warn("[GETTEXTURE]: Failed to parse a texture_id from GetTexture request: " + httpRequest.Url);
|
|
}
|
|
|
|
httpResponse.Send();
|
|
return null;
|
|
}
|
|
|
|
private void SendTexture(OSHttpRequest request, OSHttpResponse response, AssetBase texture)
|
|
{
|
|
string range = request.Headers.GetOne("Range");
|
|
//m_log.DebugFormat("[GETTEXTURE]: Range {0}", range);
|
|
if (!String.IsNullOrEmpty(range))
|
|
{
|
|
// Range request
|
|
int start, end;
|
|
if (TryParseRange(range, out start, out end))
|
|
{
|
|
end = Utils.Clamp(end, 1, texture.Data.Length);
|
|
start = Utils.Clamp(start, 0, end - 1);
|
|
|
|
//m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
|
|
|
|
if (end - start < texture.Data.Length)
|
|
response.StatusCode = (int)System.Net.HttpStatusCode.PartialContent;
|
|
|
|
response.ContentLength = end - start;
|
|
response.ContentType = texture.Metadata.ContentType;
|
|
|
|
response.Body.Write(texture.Data, start, end - start);
|
|
}
|
|
else
|
|
{
|
|
m_log.Warn("Malformed Range header: " + range);
|
|
response.StatusCode = (int)System.Net.HttpStatusCode.BadRequest;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Full content request
|
|
response.ContentLength = texture.Data.Length;
|
|
response.ContentType = texture.Metadata.ContentType;
|
|
response.Body.Write(texture.Data, 0, texture.Data.Length);
|
|
}
|
|
}
|
|
|
|
private bool TryParseRange(string header, out int start, out int end)
|
|
{
|
|
if (header.StartsWith("bytes="))
|
|
{
|
|
string[] rangeValues = header.Substring(6).Split('-');
|
|
if (rangeValues.Length == 2)
|
|
{
|
|
if (Int32.TryParse(rangeValues[0], out start) && Int32.TryParse(rangeValues[1], out end))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
start = end = 0;
|
|
return false;
|
|
}
|
|
}
|
|
}
|