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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.Collections.Generic;
using System.Net;
using System.Xml;
using ExtensionLoader;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using HttpServer;
namespace OpenSim.Grid.AssetInventoryServer.Extensions
{
public class ReferenceFrontend : IExtension<AssetInventoryServer>
{
AssetInventoryServer server;
public ReferenceFrontend()
{
}
public void Start(AssetInventoryServer server)
{
this.server = server;
// Asset metadata request
server.HttpServer.AddHandler("get", null, @"^/[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/metadata",
MetadataRequestHandler);
// Asset data request
server.HttpServer.AddHandler("get", null, @"^/[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/data",
DataRequestHandler);
// Asset creation
server.HttpServer.AddHandler("post", null, "^/createasset", CreateRequestHandler);
}
public void Stop()
{
}
bool MetadataRequestHandler(IHttpClientContext client, IHttpRequest request, IHttpResponse response)
{
UUID assetID;
// Split the URL up into an AssetID and a method
string[] rawUrl = request.Uri.PathAndQuery.Split('/');
if (rawUrl.Length >= 3 && UUID.TryParse(rawUrl[1], out assetID))
{
UUID authToken = Utils.GetAuthToken(request);
if (server.AuthorizationProvider.IsMetadataAuthorized(authToken, assetID))
{
Metadata metadata;
BackendResponse storageResponse = server.StorageProvider.TryFetchMetadata(assetID, out metadata);
if (storageResponse == BackendResponse.Success)
{
// If the asset data location wasn't specified in the metadata, specify it
// manually here by pointing back to this asset server
if (!metadata.Methods.ContainsKey("data"))
{
metadata.Methods["data"] = new Uri(String.Format("{0}://{1}/{2}/data",
request.Uri.Scheme, request.Uri.Authority, assetID));
}
byte[] serializedData = metadata.SerializeToBytes();
response.Status = HttpStatusCode.OK;
response.ContentType = "application/json";
response.ContentLength = serializedData.Length;
response.Body.Write(serializedData, 0, serializedData.Length);
}
else if (storageResponse == BackendResponse.NotFound)
{
Logger.Log.Warn("Could not find metadata for asset " + assetID.ToString());
response.Status = HttpStatusCode.NotFound;
}
else
{
response.Status = HttpStatusCode.InternalServerError;
}
}
else
{
response.Status = HttpStatusCode.Forbidden;
}
return true;
}
response.Status = HttpStatusCode.NotFound;
return true;
}
bool DataRequestHandler(IHttpClientContext client, IHttpRequest request, IHttpResponse response)
{
UUID assetID;
// Split the URL up into an AssetID and a method
string[] rawUrl = request.Uri.PathAndQuery.Split('/');
if (rawUrl.Length >= 3 && UUID.TryParse(rawUrl[1], out assetID))
{
UUID authToken = Utils.GetAuthToken(request);
if (server.AuthorizationProvider.IsDataAuthorized(authToken, assetID))
{
byte[] assetData;
BackendResponse storageResponse = server.StorageProvider.TryFetchData(assetID, out assetData);
if (storageResponse == BackendResponse.Success)
{
response.Status = HttpStatusCode.OK;
response.Status = HttpStatusCode.OK;
response.ContentType = "application/octet-stream";
response.AddHeader("Content-Disposition", "attachment; filename=" + assetID.ToString());
response.ContentLength = assetData.Length;
response.Body.Write(assetData, 0, assetData.Length);
}
else if (storageResponse == BackendResponse.NotFound)
{
response.Status = HttpStatusCode.NotFound;
}
else
{
response.Status = HttpStatusCode.InternalServerError;
}
}
else
{
response.Status = HttpStatusCode.Forbidden;
}
return true;
}
response.Status = HttpStatusCode.BadRequest;
return true;
}
bool CreateRequestHandler(IHttpClientContext client, IHttpRequest request, IHttpResponse response)
{
UUID authToken = Utils.GetAuthToken(request);
if (server.AuthorizationProvider.IsCreateAuthorized(authToken))
{
try
{
OSD osdata = OSDParser.DeserializeJson(request.Body);
if (osdata.Type == OSDType.Map)
{
OSDMap map = (OSDMap)osdata;
Metadata metadata = new Metadata();
metadata.Deserialize(map);
byte[] assetData = map["data"].AsBinary();
if (assetData != null && assetData.Length > 0)
{
BackendResponse storageResponse;
if (metadata.ID != UUID.Zero)
storageResponse = server.StorageProvider.TryCreateAsset(metadata, assetData);
else
storageResponse = server.StorageProvider.TryCreateAsset(metadata, assetData, out metadata.ID);
if (storageResponse == BackendResponse.Success)
{
response.Status = HttpStatusCode.Created;
OSDMap responseMap = new OSDMap(1);
responseMap["id"] = OSD.FromUUID(metadata.ID);
LitJson.JsonData jsonData = OSDParser.SerializeJson(responseMap);
byte[] responseData = System.Text.Encoding.UTF8.GetBytes(jsonData.ToJson());
response.Body.Write(responseData, 0, responseData.Length);
response.Body.Flush();
}
else if (storageResponse == BackendResponse.NotFound)
{
response.Status = HttpStatusCode.NotFound;
}
else
{
response.Status = HttpStatusCode.InternalServerError;
}
}
else
{
response.Status = HttpStatusCode.BadRequest;
}
}
else
{
response.Status = HttpStatusCode.BadRequest;
}
}
catch (Exception ex)
{
response.Status = HttpStatusCode.InternalServerError;
response.Reason = ex.Message;
}
}
else
{
response.Status = HttpStatusCode.Forbidden;
}
return true;
}
}
}
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