From 966e50d90c9ef9b5fde9830b6b0e90290eb2ea47 Mon Sep 17 00:00:00 2001
From: Melanie Thielker
Date: Mon, 2 Jan 2017 19:30:40 +0000
Subject: Add the HGRemoteAssetService. Allows to use any asset service with HG
---
.../HypergridService/HGRemoteAssetService.cs | 240 +++++++++++++++++++++
1 file changed, 240 insertions(+)
create mode 100644 OpenSim/Services/HypergridService/HGRemoteAssetService.cs
diff --git a/OpenSim/Services/HypergridService/HGRemoteAssetService.cs b/OpenSim/Services/HypergridService/HGRemoteAssetService.cs
new file mode 100644
index 0000000..a53435b
--- /dev/null
+++ b/OpenSim/Services/HypergridService/HGRemoteAssetService.cs
@@ -0,0 +1,240 @@
+/*
+ * 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.Generic;
+using System.IO;
+using System.Reflection;
+using System.Xml;
+
+using Nini.Config;
+using log4net;
+using OpenMetaverse;
+
+using OpenSim.Framework;
+using OpenSim.Framework.Serialization.External;
+using OpenSim.Server.Base;
+using OpenSim.Services.Interfaces;
+using OpenSim.Services.AssetService;
+
+namespace OpenSim.Services.HypergridService
+{
+ /// <summary>
+ /// Hypergrid asset service. It serves the IAssetService interface,
+ /// but implements it in ways that are appropriate for inter-grid
+ /// asset exchanges.
+ /// </summary>
+ public class HGRemoteAssetService : IAssetService
+ {
+ private static readonly ILog m_log =
+ LogManager.GetLogger(
+ MethodBase.GetCurrentMethod().DeclaringType);
+
+ private string m_HomeURL;
+ private IUserAccountService m_UserAccountService;
+ private IAssetService m_assetConnector;
+
+ private UserAccountCache m_Cache;
+
+ private AssetPermissions m_AssetPerms;
+
+ public HGRemoteAssetService(IConfigSource config, string configName)
+ {
+ m_log.Debug("[HGRemoteAsset Service]: Starting");
+ IConfig assetConfig = config.Configs[configName];
+ if (assetConfig == null)
+ throw new Exception("No HGAssetService configuration");
+
+ Object[] args = new Object[] { config };
+
+ string assetConnectorDll = assetConfig.GetString("AssetConnector", String.Empty);
+ if (assetConnectorDll == String.Empty)
+ throw new Exception("Please specify AssetConnector in HGAssetService configuration");
+
+ m_assetConnector = ServerUtils.LoadPlugin<IAssetService>(assetConnectorDll, args);
+ if (m_assetConnector == null)
+ throw new Exception(String.Format("Unable to create AssetConnector from {0}", assetConnectorDll));
+
+ string userAccountsDll = assetConfig.GetString("UserAccountsService", string.Empty);
+ if (userAccountsDll == string.Empty)
+ throw new Exception("Please specify UserAccountsService in HGAssetService configuration");
+
+ m_UserAccountService = ServerUtils.LoadPlugin<IUserAccountService>(userAccountsDll, args);
+ if (m_UserAccountService == null)
+ throw new Exception(String.Format("Unable to create UserAccountService from {0}", userAccountsDll));
+
+ m_HomeURL = Util.GetConfigVarFromSections<string>(config, "HomeURI",
+ new string[] { "Startup", "Hypergrid", configName }, string.Empty);
+ if (m_HomeURL == string.Empty)
+ throw new Exception("[HGAssetService] No HomeURI specified");
+
+ m_Cache = UserAccountCache.CreateUserAccountCache(m_UserAccountService);
+
+ // Permissions
+ m_AssetPerms = new AssetPermissions(assetConfig);
+
+ }
+
+ #region IAssetService overrides
+ public AssetBase Get(string id)
+ {
+ AssetBase asset = m_assetConnector.Get(id);
+
+ if (asset == null)
+ return null;
+
+ if (!m_AssetPerms.AllowedExport(asset.Type))
+ return null;
+
+ if (asset.Metadata.Type == (sbyte)AssetType.Object)
+ asset.Data = AdjustIdentifiers(asset.Data);
+
+ AdjustIdentifiers(asset.Metadata);
+
+ return asset;
+ }
+
+ public AssetMetadata GetMetadata(string id)
+ {
+ AssetMetadata meta = m_assetConnector.GetMetadata(id);
+
+ if (meta == null)
+ return null;
+
+ AdjustIdentifiers(meta);
+
+ return meta;
+ }
+
+ public byte[] GetData(string id)
+ {
+ AssetBase asset = Get(id);
+
+ if (asset == null)
+ return null;
+
+ if (!m_AssetPerms.AllowedExport(asset.Type))
+ return null;
+
+ // Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
+ // Fix bad assets before sending them elsewhere
+ if (asset.Type == (int)AssetType.Object && asset.Data != null)
+ {
+ string xml = ExternalRepresentationUtils.SanitizeXml(Utils.BytesToString(asset.Data));
+ asset.Data = Utils.StringToBytes(xml);
+ }
+
+ return asset.Data;
+ }
+
+ // public delegate void AssetRetrieved(string id, Object sender, AssetBase asset);
+ public virtual bool Get(string id, Object sender, AssetRetrieved handler)
+ {
+ return m_assetConnector.Get(id, sender, (i, s, asset) =>
+ {
+ if (asset != null)
+ {
+ if (!m_AssetPerms.AllowedExport(asset.Type))
+ {
+ asset = null;
+ }
+ else
+ {
+ if (asset.Metadata.Type == (sbyte)AssetType.Object)
+ asset.Data = AdjustIdentifiers(asset.Data);
+
+ AdjustIdentifiers(asset.Metadata);
+ }
+ }
+
+ handler(i, s, asset);
+ });
+ }
+
+ public string Store(AssetBase asset)
+ {
+ if (!m_AssetPerms.AllowedImport(asset.Type))
+ return string.Empty;
+
+ // Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
+ // Fix bad assets before storing on this server
+ if (asset.Type == (int)AssetType.Object && asset.Data != null)
+ {
+ string xml = ExternalRepresentationUtils.SanitizeXml(Utils.BytesToString(asset.Data));
+ asset.Data = Utils.StringToBytes(xml);
+ }
+
+ return m_assetConnector.Store(asset);
+ }
+
+ public bool Delete(string id)
+ {
+ // NOGO
+ return false;
+ }
+
+ #endregion
+
+ protected void AdjustIdentifiers(AssetMetadata meta)
+ {
+ if (meta == null || m_Cache == null)
+ return;
+
+ UserAccount creator = m_Cache.GetUser(meta.CreatorID);
+ if (creator != null)
+ meta.CreatorID = meta.CreatorID + ";" + m_HomeURL + "/" + creator.FirstName + " " + creator.LastName;
+ }
+
+ // Only for Object
+ protected byte[] AdjustIdentifiers(byte[] data)
+ {
+ string xml = Utils.BytesToString(data);
+
+ // Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
+ // Fix bad assets before sending them elsewhere
+ xml = ExternalRepresentationUtils.SanitizeXml(xml);
+
+ return Utils.StringToBytes(ExternalRepresentationUtils.RewriteSOP(xml, "HGAssetService", m_HomeURL, m_Cache, UUID.Zero));
+ }
+
+ public AssetBase GetCached(string id)
+ {
+ return Get(id);
+ }
+
+ public bool[] AssetsExist(string[] ids)
+ {
+ return m_assetConnector.AssetsExist(ids);
+ }
+
+ public bool UpdateContent(string id, byte[] data)
+ {
+ // SO not happening!!
+ return false;
+ }
+ }
+
+}
--
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