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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;
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.Services.Interfaces;
using Caps = OpenSim.Framework.Capabilities.Caps;
namespace OpenSim.Capabilities.Handlers
{
public class GetMeshHandler
{
private static readonly ILog m_log =
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private IAssetService m_assetService;
public const string DefaultFormat = "vnd.ll.mesh";
public GetMeshHandler(IAssetService assService)
{
m_assetService = assService;
}
public Hashtable Handle(Hashtable request)
{
return ProcessGetMesh(request, UUID.Zero, null); ;
}
public Hashtable ProcessGetMesh(Hashtable request, UUID AgentId, Caps cap)
{
Hashtable responsedata = new Hashtable();
if (m_assetService == null)
{
responsedata["int_response_code"] = (int)System.Net.HttpStatusCode.ServiceUnavailable;
responsedata["str_response_string"] = "The asset service is unavailable";
responsedata["keepalive"] = false;
return responsedata;
}
responsedata["int_response_code"] = (int)System.Net.HttpStatusCode.BadRequest;
responsedata["content_type"] = "text/plain";
responsedata["int_bytes"] = 0;
string meshStr = string.Empty;
if (request.ContainsKey("mesh_id"))
meshStr = request["mesh_id"].ToString();
if (String.IsNullOrEmpty(meshStr))
return responsedata;
UUID meshID = UUID.Zero;
if(!UUID.TryParse(meshStr, out meshID))
return responsedata;
AssetBase mesh = m_assetService.Get(meshID.ToString());
if(mesh == null)
{
responsedata["int_response_code"] = (int)System.Net.HttpStatusCode.NotFound;
responsedata["str_response_string"] = "Mesh not found.";
return responsedata;
}
if (mesh.Type != (SByte)AssetType.Mesh)
{
responsedata["str_response_string"] = "Asset isn't a mesh.";
return responsedata;
}
string range = String.Empty;
if (((Hashtable)request["headers"])["range"] != null)
range = (string)((Hashtable)request["headers"])["range"];
else if (((Hashtable)request["headers"])["Range"] != null)
range = (string)((Hashtable)request["headers"])["Range"];
responsedata["content_type"] = "application/vnd.ll.mesh";
if (String.IsNullOrEmpty(range))
{
// full mesh
responsedata["str_response_string"] = Convert.ToBase64String(mesh.Data);
responsedata["int_response_code"] = (int)System.Net.HttpStatusCode.OK;
return responsedata;
}
// range request
int start, end;
if (Util.TryParseHttpRange(range, out start, out end))
{
// Before clamping start make sure we can satisfy it in order to avoid
// sending back the last byte instead of an error status
if (start >= mesh.Data.Length)
{
responsedata["str_response_string"] = "This range doesnt exist.";
return responsedata;
}
end = Utils.Clamp(end, 0, mesh.Data.Length - 1);
start = Utils.Clamp(start, 0, end);
int len = end - start + 1;
//m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
Hashtable headers = new Hashtable();
headers["Content-Range"] = String.Format("bytes {0}-{1}/{2}", start, end, mesh.Data.Length);
responsedata["headers"] = headers;
responsedata["int_response_code"] = (int)System.Net.HttpStatusCode.PartialContent;
byte[] d = new byte[len];
Array.Copy(mesh.Data, start, d, 0, len);
responsedata["bin_response_data"] = d;
responsedata["int_bytes"] = len;
return responsedata;
}
m_log.Warn("[GETMESH]: Failed to parse a range from GetMesh request, sending full asset: " + (string)request["uri"]);
responsedata["str_response_string"] = Convert.ToBase64String(mesh.Data);
responsedata["int_response_code"] = (int)System.Net.HttpStatusCode.OK;
return responsedata;
}
}
}
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