SceneBanner.cs 3.7 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.Collections.Generic;
  28. using System.Net;
  29. using OpenSim.Framework.Client;
  30. using OpenSim.Region.Framework.Scenes;
  31. namespace OpenSim.Region.CoreModules.Agent.IPBan
  32. {
  33. internal class SceneBanner
  34. {
  35. private static readonly log4net.ILog m_log
  36. = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
  37. private List<string> bans;
  38. // private SceneBase m_scene;
  39. public SceneBanner(SceneBase scene, List<string> banList)
  40. {
  41. scene.EventManager.OnClientConnect += EventManager_OnClientConnect;
  42. bans = banList;
  43. // m_scene = scene;
  44. }
  45. void EventManager_OnClientConnect(IClientCore client)
  46. {
  47. // Only need to run through all this if there are entries in the ban list
  48. if (bans.Count > 0)
  49. {
  50. IClientIPEndpoint ipEndpoint;
  51. if (client.TryGet(out ipEndpoint) && ipEndpoint.RemoteEndPoint != null)
  52. {
  53. IPAddress end = ipEndpoint.RemoteEndPoint.Address;
  54. try
  55. {
  56. IPHostEntry rDNS = Dns.GetHostEntry(end);
  57. foreach (string ban in bans)
  58. {
  59. if (rDNS.HostName.Contains(ban) ||
  60. end.ToString().StartsWith(ban))
  61. {
  62. client.Disconnect("Banned - network \"" + ban + "\" is not allowed to connect to this server.");
  63. m_log.Warn("[IPBAN] Disconnected '" + end + "' due to '" + ban + "' ban.");
  64. return;
  65. }
  66. }
  67. }
  68. catch (System.Net.Sockets.SocketException)
  69. {
  70. m_log.WarnFormat("[IPBAN] IP address \"{0}\" cannot be resolved via DNS", end);
  71. }
  72. // m_log.DebugFormat("[IPBAN] User \"{0}\" not in any ban lists. Allowing connection.", end);
  73. }
  74. }
  75. }
  76. }
  77. }