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/*
* Copyright (c) 2008 Intel Corporation
* All rights reserved.
* 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 Intel Corporation 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``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 INTEL OR ITS
* 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.Reflection;
using System.Collections.Generic;
using System.Net;
using System.IO;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using OpenMetaverse;
using HttpServer;
using OpenSim.Framework;
using OpenSim.Framework.Servers;
using log4net;
namespace OpenSim.Grid.AssetInventoryServer.Plugins.OpenSim
{
public class OpenSimAssetFrontendPlugin : IAssetInventoryServerPlugin
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private AssetInventoryServer m_server;
public OpenSimAssetFrontendPlugin()
{
}
#region IPlugin implementation
public void Initialise(AssetInventoryServer server)
{
m_server = server;
// Asset request
m_server.HttpServer.AddStreamHandler(new AssetRequestHandler(server));
// Asset creation
m_server.HttpServer.AddStreamHandler(new AssetPostHandler(server));
m_log.Info("[ASSET] OpenSim Asset Frontend loaded.");
}
/// <summary>
/// <para>Initialises asset interface</para>
/// </summary>
public void Initialise()
{
m_log.InfoFormat("[ASSET]: {0} cannot be default-initialized!", Name);
throw new PluginNotInitialisedException(Name);
}
public void Dispose()
{
}
public string Version
{
// TODO: this should be something meaningful and not hardcoded?
get { return "0.1"; }
}
public string Name
{
get { return "AssetInventoryServer OpenSim asset frontend"; }
}
#endregion IPlugin implementation
public class AssetRequestHandler : BaseStreamHandler
{
AssetInventoryServer m_server;
//public AssetRequestHandler(AssetInventoryServer server) : base("GET", "^/assets")
public AssetRequestHandler(AssetInventoryServer server) : base("GET", "/assets")
{
m_server = server;
}
public override byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
{
byte[] buffer = new byte[] {};
UUID assetID;
// Split the URL up to get the asset ID out
string[] rawUrl = httpRequest.Url.PathAndQuery.Split('/');
if (rawUrl.Length >= 3 && rawUrl[2].Length >= 36 && UUID.TryParse(rawUrl[2].Substring(0, 36), out assetID))
{
BackendResponse dataResponse;
AssetBase asset = new AssetBase();
if ((dataResponse = m_server.StorageProvider.TryFetchDataMetadata(assetID, out asset)) == BackendResponse.Success)
{
XmlSerializer xs = new XmlSerializer(typeof (AssetBase));
MemoryStream ms = new MemoryStream();
XmlTextWriter xw = new XmlTextWriter(ms, Encoding.UTF8);
xs.Serialize(xw, asset);
xw.Flush();
ms.Seek(0, SeekOrigin.Begin);
buffer = ms.GetBuffer();
Array.Resize<byte>(ref buffer, (int) ms.Length);
httpResponse.StatusCode = (int) HttpStatusCode.OK;
}
else
{
m_log.WarnFormat("Failed to fetch asset data or metadata for {0}: {1}", assetID, dataResponse);
httpResponse.StatusCode = (int) HttpStatusCode.NotFound;
}
}
else
{
m_log.Warn("Unrecognized OpenSim asset request: " + httpRequest.Url.PathAndQuery);
}
return buffer;
}
}
public class AssetPostHandler : BaseStreamHandler
{
AssetInventoryServer m_server;
//public AssetPostHandler(AssetInventoryServer server) : base("POST", "/^assets")
public AssetPostHandler(AssetInventoryServer server) : base("POST", "/assets")
{
m_server = server;
}
public override byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
{
Metadata metadata = new Metadata();
try
{
AssetBase asset = (AssetBase) new XmlSerializer(typeof (AssetBase)).Deserialize(httpRequest.InputStream);
if (asset.Data != null && asset.Data.Length > 0)
{
metadata.ID = asset.Metadata.FullID;
metadata.ContentType = Utils.SLAssetTypeToContentType((int) asset.Metadata.Type);
metadata.Name = asset.Metadata.Name;
metadata.Description = asset.Metadata.Description;
metadata.Temporary = asset.Metadata.Temporary;
metadata.SHA1 = OpenMetaverse.Utils.SHA1(asset.Data);
metadata.CreationDate = DateTime.Now;
BackendResponse storageResponse = m_server.StorageProvider.TryCreateAsset(metadata, asset.Data);
if (storageResponse == BackendResponse.Success)
httpResponse.StatusCode = (int) HttpStatusCode.Created;
else if (storageResponse == BackendResponse.NotFound)
httpResponse.StatusCode = (int) HttpStatusCode.NotFound;
else
httpResponse.StatusCode = (int) HttpStatusCode.InternalServerError;
}
else
{
m_log.Warn("AssetPostHandler called with no asset data");
httpResponse.StatusCode = (int) HttpStatusCode.BadRequest;
}
}
catch (Exception ex)
{
m_log.Warn("Failed to parse POST data (expecting AssetBase): " + ex.Message);
httpResponse.StatusCode = (int) HttpStatusCode.BadRequest;
}
return null;
}
}
}
}
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