374 lines
14 KiB
C#
374 lines
14 KiB
C#
/*
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* Copyright (c) 2008 Intel Corporation
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* -- Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* -- Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* -- Neither the name of the Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR ITS
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.IO;
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using System.Reflection;
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using System.Collections.Generic;
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using System.Net;
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using System.Xml;
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using OpenMetaverse;
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using OpenMetaverse.StructuredData;
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using HttpServer;
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using OpenSim.Framework;
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using OpenSim.Framework.Servers;
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using log4net;
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namespace OpenSim.Grid.AssetInventoryServer.Plugins
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{
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public class ReferenceFrontendPlugin : IAssetInventoryServerPlugin
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{
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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AssetInventoryServer m_server;
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public ReferenceFrontendPlugin()
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{
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}
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#region IPlugin implementation
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public void Initialise(AssetInventoryServer server)
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{
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m_server = server;
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// Asset metadata request
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m_server.HttpServer.AddStreamHandler(new MetadataRequestHandler(server));
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// Asset data request
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m_server.HttpServer.AddStreamHandler(new DataRequestHandler(server));
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// Asset creation
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m_server.HttpServer.AddStreamHandler(new CreateRequestHandler(server));
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m_log.Info("[ASSET] Reference Frontend loaded.");
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}
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/// <summary>
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/// <para>Initialises asset interface</para>
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/// </summary>
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public void Initialise()
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{
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m_log.InfoFormat("[ASSET]: {0} cannot be default-initialized!", Name);
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throw new PluginNotInitialisedException(Name);
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}
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public void Dispose()
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{
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}
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public string Version
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{
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// TODO: this should be something meaningful and not hardcoded?
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get { return "0.1"; }
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}
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public string Name
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{
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get { return "AssetInventoryServer Reference asset frontend"; }
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}
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#endregion IPlugin implementation
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public class MetadataRequestHandler : IStreamedRequestHandler
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{
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AssetInventoryServer m_server;
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string m_contentType;
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string m_httpMethod;
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string m_path;
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public MetadataRequestHandler(AssetInventoryServer server)
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{
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m_server = server;
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m_contentType = null;
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m_httpMethod = "GET";
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m_path = @"^/[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/metadata";
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}
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#region IStreamedRequestHandler implementation
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public string ContentType
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{
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get { return m_contentType; }
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}
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public string HttpMethod
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{
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get { return m_httpMethod; }
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}
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public string Path
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{
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get { return m_path; }
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}
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public byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
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{
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byte[] serializedData = null;
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UUID assetID;
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// Split the URL up into an AssetID and a method
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string[] rawUrl = httpRequest.Url.PathAndQuery.Split('/');
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if (rawUrl.Length >= 3 && UUID.TryParse(rawUrl[1], out assetID))
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{
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UUID authToken = Utils.GetAuthToken(httpRequest);
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if (m_server.AuthorizationProvider.IsMetadataAuthorized(authToken, assetID))
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{
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Metadata metadata;
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BackendResponse storageResponse = m_server.StorageProvider.TryFetchMetadata(assetID, out metadata);
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if (storageResponse == BackendResponse.Success)
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{
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// If the asset data location wasn't specified in the metadata, specify it
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// manually here by pointing back to this asset server
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if (!metadata.Methods.ContainsKey("data"))
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{
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metadata.Methods["data"] = new Uri(String.Format("{0}://{1}/{2}/data",
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httpRequest.Url.Scheme, httpRequest.Url.Authority, assetID));
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}
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serializedData = metadata.SerializeToBytes();
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httpResponse.StatusCode = (int) HttpStatusCode.OK;
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httpResponse.ContentType = "application/json";
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httpResponse.ContentLength = serializedData.Length;
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httpResponse.Body.Write(serializedData, 0, serializedData.Length);
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}
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else if (storageResponse == BackendResponse.NotFound)
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{
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m_log.Warn("Could not find metadata for asset " + assetID.ToString());
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httpResponse.StatusCode = (int) HttpStatusCode.NotFound;
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}
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else
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{
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httpResponse.StatusCode = (int) HttpStatusCode.InternalServerError;
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}
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}
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else
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{
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httpResponse.StatusCode = (int) HttpStatusCode.Forbidden;
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}
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return serializedData;
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}
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httpResponse.StatusCode = (int) HttpStatusCode.NotFound;
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return serializedData;
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}
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#endregion IStreamedRequestHandler implementation
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}
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public class DataRequestHandler : IStreamedRequestHandler
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{
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AssetInventoryServer m_server;
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string m_contentType;
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string m_httpMethod;
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string m_path;
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public DataRequestHandler(AssetInventoryServer server)
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{
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m_server = server;
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m_contentType = null;
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m_httpMethod = "GET";
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m_path = @"^/[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/data";
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}
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#region IStreamedRequestHandler implementation
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public string ContentType
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{
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get { return m_contentType; }
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}
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public string HttpMethod
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{
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get { return m_httpMethod; }
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}
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public string Path
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{
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get { return m_path; }
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}
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public byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
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{
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byte[] assetData = null;
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UUID assetID;
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// Split the URL up into an AssetID and a method
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string[] rawUrl = httpRequest.Url.PathAndQuery.Split('/');
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if (rawUrl.Length >= 3 && UUID.TryParse(rawUrl[1], out assetID))
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{
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UUID authToken = Utils.GetAuthToken(httpRequest);
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if (m_server.AuthorizationProvider.IsDataAuthorized(authToken, assetID))
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{
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BackendResponse storageResponse = m_server.StorageProvider.TryFetchData(assetID, out assetData);
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if (storageResponse == BackendResponse.Success)
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{
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httpResponse.StatusCode = (int) HttpStatusCode.OK;
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httpResponse.ContentType = "application/octet-stream";
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httpResponse.AddHeader("Content-Disposition", "attachment; filename=" + assetID.ToString());
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httpResponse.ContentLength = assetData.Length;
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httpResponse.Body.Write(assetData, 0, assetData.Length);
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}
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else if (storageResponse == BackendResponse.NotFound)
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{
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httpResponse.StatusCode = (int) HttpStatusCode.NotFound;
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}
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else
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{
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httpResponse.StatusCode = (int) HttpStatusCode.InternalServerError;
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}
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}
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else
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{
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httpResponse.StatusCode = (int) HttpStatusCode.Forbidden;
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}
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return assetData;
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}
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httpResponse.StatusCode = (int) HttpStatusCode.BadRequest;
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return assetData;
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}
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#endregion IStreamedRequestHandler implementation
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}
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public class CreateRequestHandler : IStreamedRequestHandler
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{
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AssetInventoryServer m_server;
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string m_contentType;
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string m_httpMethod;
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string m_path;
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public CreateRequestHandler(AssetInventoryServer server)
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{
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m_server = server;
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m_contentType = null;
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m_httpMethod = "POST";
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m_path = "^/createasset";
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}
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#region IStreamedRequestHandler implementation
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public string ContentType
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{
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get { return m_contentType; }
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}
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public string HttpMethod
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{
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get { return m_httpMethod; }
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}
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public string Path
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{
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get { return m_path; }
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}
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public byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
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{
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byte[] responseData = null;
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UUID authToken = Utils.GetAuthToken(httpRequest);
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if (m_server.AuthorizationProvider.IsCreateAuthorized(authToken))
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{
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try
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{
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OSD osdata = OSDParser.DeserializeJson(httpRequest.InputStream);
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if (osdata.Type == OSDType.Map)
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{
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OSDMap map = (OSDMap)osdata;
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Metadata metadata = new Metadata();
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metadata.Deserialize(map);
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byte[] assetData = map["data"].AsBinary();
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if (assetData != null && assetData.Length > 0)
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{
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BackendResponse storageResponse;
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if (metadata.ID != UUID.Zero)
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storageResponse = m_server.StorageProvider.TryCreateAsset(metadata, assetData);
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else
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storageResponse = m_server.StorageProvider.TryCreateAsset(metadata, assetData, out metadata.ID);
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if (storageResponse == BackendResponse.Success)
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{
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httpResponse.StatusCode = (int) HttpStatusCode.Created;
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OSDMap responseMap = new OSDMap(1);
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responseMap["id"] = OSD.FromUUID(metadata.ID);
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LitJson.JsonData jsonData = OSDParser.SerializeJson(responseMap);
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responseData = System.Text.Encoding.UTF8.GetBytes(jsonData.ToJson());
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httpResponse.Body.Write(responseData, 0, responseData.Length);
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httpResponse.Body.Flush();
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}
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else if (storageResponse == BackendResponse.NotFound)
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{
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httpResponse.StatusCode = (int) HttpStatusCode.NotFound;
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}
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else
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{
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httpResponse.StatusCode = (int) HttpStatusCode.InternalServerError;
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}
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}
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else
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{
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httpResponse.StatusCode = (int) HttpStatusCode.BadRequest;
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}
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}
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else
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{
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httpResponse.StatusCode = (int) HttpStatusCode.BadRequest;
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}
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}
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catch (Exception ex)
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{
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httpResponse.StatusCode = (int) HttpStatusCode.InternalServerError;
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httpResponse.StatusDescription = ex.Message;
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}
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}
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else
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{
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httpResponse.StatusCode = (int) HttpStatusCode.Forbidden;
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}
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return responseData;
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}
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#endregion IStreamedRequestHandler implementation
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}
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}
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}
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