OspResolver.cs 7.5 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.Reflection;
  28. using System.Text;
  29. using log4net;
  30. using OpenMetaverse;
  31. using OpenSim.Framework;
  32. using OpenSim.Services.Interfaces;
  33. namespace OpenSim.Framework.Communications.Osp
  34. {
  35. /// <summary>
  36. /// Resolves OpenSim Profile Anchors (OSPA). An OSPA is a string used to provide information for
  37. /// identifying user profiles or supplying a simple name if no profile is available.
  38. /// </summary>
  39. public class OspResolver
  40. {
  41. private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
  42. public const string OSPA_PREFIX = "ospa:";
  43. public const string OSPA_NAME_KEY = "n";
  44. public const string OSPA_NAME_VALUE_SEPARATOR = " ";
  45. public const string OSPA_TUPLE_SEPARATOR = "|";
  46. public static readonly char[] OSPA_TUPLE_SEPARATOR_ARRAY = OSPA_TUPLE_SEPARATOR.ToCharArray();
  47. public const string OSPA_PAIR_SEPARATOR = "=";
  48. /// <summary>
  49. /// Make an OSPA given a user UUID
  50. /// </summary>
  51. /// <param name="userId"></param>
  52. /// <param name="commsManager"></param>
  53. /// <returns>The OSPA. Null if a user with the given UUID could not be found.</returns>
  54. public static string MakeOspa(UUID userId, IUserAccountService userService)
  55. {
  56. UserAccount account = userService.GetUserAccount(UUID.Zero, userId);
  57. if (account != null)
  58. return MakeOspa(account.FirstName, account.LastName);
  59. return null;
  60. }
  61. /// <summary>
  62. /// Make an OSPA given a user name
  63. /// </summary>
  64. /// <param name="name"></param>
  65. /// <returns></returns>
  66. public static string MakeOspa(string firstName, string lastName)
  67. {
  68. return
  69. OSPA_PREFIX + OSPA_NAME_KEY + OSPA_PAIR_SEPARATOR + firstName + OSPA_NAME_VALUE_SEPARATOR + lastName;
  70. }
  71. /// <summary>
  72. /// Resolve an osp string into the most suitable internal OpenSim identifier.
  73. /// </summary>
  74. ///
  75. /// In some cases this will be a UUID if a suitable profile exists on the system. In other cases, this may
  76. /// just return the same identifier after creating a temporary profile.
  77. ///
  78. /// <param name="ospa"></param>
  79. /// <param name="commsManager"></param>
  80. /// <returns>
  81. /// A suitable UUID for use in Second Life client communication. If the string was not a valid ospa, then UUID.Zero
  82. /// is returned.
  83. /// </returns>
  84. public static UUID ResolveOspa(string ospa, IUserAccountService userService)
  85. {
  86. if (!ospa.StartsWith(OSPA_PREFIX))
  87. return UUID.Zero;
  88. // m_log.DebugFormat("[OSP RESOLVER]: Resolving {0}", ospa);
  89. string ospaMeat = ospa.Substring(OSPA_PREFIX.Length);
  90. string[] ospaTuples = ospaMeat.Split(OSPA_TUPLE_SEPARATOR_ARRAY);
  91. foreach (string tuple in ospaTuples)
  92. {
  93. int tupleSeparatorIndex = tuple.IndexOf(OSPA_PAIR_SEPARATOR);
  94. if (tupleSeparatorIndex < 0)
  95. {
  96. m_log.WarnFormat("[OSP RESOLVER]: Ignoring non-tuple component {0} in OSPA {1}", tuple, ospa);
  97. continue;
  98. }
  99. string key = tuple.Remove(tupleSeparatorIndex).Trim();
  100. string value = tuple.Substring(tupleSeparatorIndex + 1).Trim();
  101. if (OSPA_NAME_KEY == key)
  102. return ResolveOspaName(value, userService);
  103. }
  104. return UUID.Zero;
  105. }
  106. /// <summary>
  107. /// Hash a profile name into a UUID
  108. /// </summary>
  109. /// <param name="name"></param>
  110. /// <returns></returns>
  111. public static UUID HashName(string name)
  112. {
  113. return new UUID(Utils.MD5(Encoding.Unicode.GetBytes(name)), 0);
  114. }
  115. /// <summary>
  116. /// Resolve an OSPI name by querying existing persistent user profiles. If there is no persistent user profile
  117. /// then a temporary user profile is inserted in the cache.
  118. /// </summary>
  119. /// <param name="name"></param>
  120. /// <param name="commsManager"></param>
  121. /// <returns>
  122. /// An OpenSim internal identifier for the name given. Returns null if the name was not valid
  123. /// </returns>
  124. protected static UUID ResolveOspaName(string name, IUserAccountService userService)
  125. {
  126. if (userService == null)
  127. return UUID.Zero;
  128. int nameSeparatorIndex = name.IndexOf(OSPA_NAME_VALUE_SEPARATOR);
  129. if (nameSeparatorIndex < 0)
  130. {
  131. m_log.WarnFormat("[OSP RESOLVER]: Ignoring unseparated name {0}", name);
  132. return UUID.Zero;
  133. }
  134. string firstName = name.Remove(nameSeparatorIndex).TrimEnd();
  135. string lastName = name.Substring(nameSeparatorIndex + 1).TrimStart();
  136. UserAccount account = userService.GetUserAccount(UUID.Zero, firstName, lastName);
  137. if (account != null)
  138. return account.PrincipalID;
  139. // XXX: Disable temporary user profile creation for now as implementation is incomplete - justincc
  140. /*
  141. UserProfileData tempUserProfile = new UserProfileData();
  142. tempUserProfile.FirstName = firstName;
  143. tempUserProfile.SurName = lastName;
  144. tempUserProfile.ID = HashName(tempUserProfile.Name);
  145. m_log.DebugFormat(
  146. "[OSP RESOLVER]: Adding temporary user profile for {0} {1}", tempUserProfile.Name, tempUserProfile.ID);
  147. commsManager.UserService.AddTemporaryUserProfile(tempUserProfile);
  148. return tempUserProfile.ID;
  149. */
  150. return UUID.Zero;
  151. }
  152. }
  153. }