/*
* 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:
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* 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
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* 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
{
///
/// Hypergrid asset service. It serves the IAssetService interface,
/// but implements it in ways that are appropriate for inter-grid
/// asset exchanges.
///
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.Length == 0)
throw new Exception("Please specify AssetConnector in HGAssetService configuration");
m_assetConnector = ServerUtils.LoadPlugin(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.Length == 0)
throw new Exception("Please specify UserAccountsService in HGAssetService configuration");
m_UserAccountService = ServerUtils.LoadPlugin(userAccountsDll, args);
if (m_UserAccountService == null)
throw new Exception(String.Format("Unable to create UserAccountService from {0}", userAccountsDll));
m_HomeURL = Util.GetConfigVarFromSections(config, "HomeURI",
new string[] { "Startup", "Hypergrid", configName }, string.Empty);
if (m_HomeURL.Length == 0)
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 AssetBase Get(string id, string ForeignAssetService, bool dummy)
{
return null;
}
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 void Get(string id, string ForeignAssetService, bool StoreOnLocalGrid, SimpleAssetRetrieved callBack)
{
m_assetConnector.Get(id, null, (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);
}
}
callBack(asset);
});
}
public string Store(AssetBase asset, bool AllowRetry)
{
return Store(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;
}
}
}