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/*
* 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 HGAssetService : OpenSim.Services.AssetService.AssetService, IAssetService
{
private static readonly ILog m_log =
LogManager.GetLogger(
MethodBase.GetCurrentMethod().DeclaringType);
private string m_HomeURL;
private IUserAccountService m_UserAccountService;
private UserAccountCache m_Cache;
private AssetPermissions m_AssetPerms;
public HGAssetService(IConfigSource config, string configName) : base(config, configName)
{
m_log.Debug("[HGAsset Service]: Starting");
IConfig assetConfig = config.Configs[configName];
if (assetConfig == null)
throw new Exception("No HGAssetService configuration");
string userAccountsDll = assetConfig.GetString("UserAccountsService", string.Empty);
if (userAccountsDll == string.Empty)
throw new Exception("Please specify UserAccountsService in HGAssetService configuration");
Object[] args = new Object[] { config };
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 override AssetBase Get(string id)
{
AssetBase asset = base.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 override AssetMetadata GetMetadata(string id)
{
AssetMetadata meta = base.GetMetadata(id);
if (meta == null)
return null;
AdjustIdentifiers(meta);
return meta;
}
public override byte[] GetData(string id)
{
AssetBase asset = Get(id);
if (asset == null)
return null;
if (!m_AssetPerms.AllowedExport(asset.Type))
return null;
return asset.Data;
}
//public virtual bool Get(string id, Object sender, AssetRetrieved handler)
public override string Store(AssetBase asset)
{
if (!m_AssetPerms.AllowedImport(asset.Type))
return string.Empty;
return base.Store(asset);
}
public override 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;
}
protected byte[] AdjustIdentifiers(byte[] data)
{
string xml = Utils.BytesToString(data);
return Utils.StringToBytes(ExternalRepresentationUtils.RewriteSOP(xml, m_HomeURL, m_Cache, UUID.Zero));
}
}
}
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