HGAssetService.cs 6.0 KB

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  1. /*
  2. * Copyright (c) Contributors, http://opensimulator.org/
  3. * See CONTRIBUTORS.TXT for a full list of copyright holders.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. * * Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * * Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. * * Neither the name of the OpenSimulator Project nor the
  13. * names of its contributors may be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
  17. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19. * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
  20. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26. */
  27. using System;
  28. using System.Collections.Generic;
  29. using System.IO;
  30. using System.Reflection;
  31. using System.Xml;
  32. using Nini.Config;
  33. using log4net;
  34. using OpenMetaverse;
  35. using OpenSim.Framework;
  36. using OpenSim.Framework.Serialization.External;
  37. using OpenSim.Server.Base;
  38. using OpenSim.Services.Interfaces;
  39. using OpenSim.Services.AssetService;
  40. namespace OpenSim.Services.HypergridService
  41. {
  42. /// <summary>
  43. /// Hypergrid asset service. It serves the IAssetService interface,
  44. /// but implements it in ways that are appropriate for inter-grid
  45. /// asset exchanges.
  46. /// </summary>
  47. public class HGAssetService : OpenSim.Services.AssetService.AssetService, IAssetService
  48. {
  49. private static readonly ILog m_log =
  50. LogManager.GetLogger(
  51. MethodBase.GetCurrentMethod().DeclaringType);
  52. private string m_HomeURL;
  53. private IUserAccountService m_UserAccountService;
  54. private UserAccountCache m_Cache;
  55. private AssetPermissions m_AssetPerms;
  56. public HGAssetService(IConfigSource config, string configName) : base(config, configName)
  57. {
  58. m_log.Debug("[HGAsset Service]: Starting");
  59. IConfig assetConfig = config.Configs[configName];
  60. if (assetConfig == null)
  61. throw new Exception("No HGAssetService configuration");
  62. string userAccountsDll = assetConfig.GetString("UserAccountsService", string.Empty);
  63. if (userAccountsDll == string.Empty)
  64. throw new Exception("Please specify UserAccountsService in HGAssetService configuration");
  65. Object[] args = new Object[] { config };
  66. m_UserAccountService = ServerUtils.LoadPlugin<IUserAccountService>(userAccountsDll, args);
  67. if (m_UserAccountService == null)
  68. throw new Exception(String.Format("Unable to create UserAccountService from {0}", userAccountsDll));
  69. m_HomeURL = Util.GetConfigVarFromSections<string>(config, "HomeURI",
  70. new string[] { "Startup", "Hypergrid", configName }, string.Empty);
  71. if (m_HomeURL == string.Empty)
  72. throw new Exception("[HGAssetService] No HomeURI specified");
  73. m_Cache = UserAccountCache.CreateUserAccountCache(m_UserAccountService);
  74. // Permissions
  75. m_AssetPerms = new AssetPermissions(assetConfig);
  76. }
  77. #region IAssetService overrides
  78. public override AssetBase Get(string id)
  79. {
  80. AssetBase asset = base.Get(id);
  81. if (asset == null)
  82. return null;
  83. if (!m_AssetPerms.AllowedExport(asset.Type))
  84. return null;
  85. if (asset.Metadata.Type == (sbyte)AssetType.Object)
  86. asset.Data = AdjustIdentifiers(asset.Data); ;
  87. AdjustIdentifiers(asset.Metadata);
  88. return asset;
  89. }
  90. public override AssetMetadata GetMetadata(string id)
  91. {
  92. AssetMetadata meta = base.GetMetadata(id);
  93. if (meta == null)
  94. return null;
  95. AdjustIdentifiers(meta);
  96. return meta;
  97. }
  98. public override byte[] GetData(string id)
  99. {
  100. AssetBase asset = Get(id);
  101. if (asset == null)
  102. return null;
  103. if (!m_AssetPerms.AllowedExport(asset.Type))
  104. return null;
  105. return asset.Data;
  106. }
  107. //public virtual bool Get(string id, Object sender, AssetRetrieved handler)
  108. public override string Store(AssetBase asset)
  109. {
  110. if (!m_AssetPerms.AllowedImport(asset.Type))
  111. return string.Empty;
  112. return base.Store(asset);
  113. }
  114. public override bool Delete(string id)
  115. {
  116. // NOGO
  117. return false;
  118. }
  119. #endregion
  120. protected void AdjustIdentifiers(AssetMetadata meta)
  121. {
  122. if (meta == null || m_Cache == null)
  123. return;
  124. UserAccount creator = m_Cache.GetUser(meta.CreatorID);
  125. if (creator != null)
  126. meta.CreatorID = meta.CreatorID + ";" + m_HomeURL + "/" + creator.FirstName + " " + creator.LastName;
  127. }
  128. protected byte[] AdjustIdentifiers(byte[] data)
  129. {
  130. string xml = Utils.BytesToString(data);
  131. return Utils.StringToBytes(ExternalRepresentationUtils.RewriteSOP(xml, m_HomeURL, m_Cache, UUID.Zero));
  132. }
  133. }
  134. }