1 files changed, 265 insertions, 0 deletions

diff --git a/OpenSim/Grid/AssetInventoryServer/Plugins/ReferenceFrontendPlugin.cs b/OpenSim/Grid/AssetInventoryServer/Plugins/ReferenceFrontendPlugin.cs
new file mode 100644
index 0000000..fddc385
--- /dev/null
+++ b/OpenSim/Grid/AssetInventoryServer/Plugins/ReferenceFrontendPlugin.cs
@@ -0,0 +1,265 @@
+/*
+ * 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 OpenMetaverse;
+using OpenMetaverse.StructuredData;
+using HttpServer;
+using OpenSim.Framework;
+
+namespace OpenSim.Grid.AssetInventoryServer.Plugins
+{
+    public class ReferenceFrontendPlugin : IAssetInventoryServerPlugin
+    {
+        AssetInventoryServer server;
+
+        public ReferenceFrontendPlugin()
+        {
+        }
+
+        #region IPlugin implementation
+
+        public void Initialise(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);
+
+            Logger.Log.Info("[ASSET] Reference Frontend loaded.");
+        }
+
+        /// <summary>
+        /// <para>Initialises asset interface</para>
+        /// </summary>
+        public void Initialise()
+        {
+            Logger.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 Reference asset frontend"; }
+        }
+
+        #endregion IPlugin implementation
+
+        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;
+        }
+    }
+}