84 lines
3.7 KiB
C#
84 lines
3.7 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System.Collections.Generic;
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using System.Net;
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using OpenSim.Framework.Client;
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using OpenSim.Region.Framework.Scenes;
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namespace OpenSim.Region.CoreModules.Agent.IPBan
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{
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internal class SceneBanner
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{
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private static readonly log4net.ILog m_log
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= log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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private List<string> bans;
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// private SceneBase m_scene;
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public SceneBanner(SceneBase scene, List<string> banList)
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{
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scene.EventManager.OnClientConnect += EventManager_OnClientConnect;
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bans = banList;
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// m_scene = scene;
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}
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void EventManager_OnClientConnect(IClientCore client)
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{
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// Only need to run through all this if there are entries in the ban list
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if (bans.Count > 0)
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{
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IClientIPEndpoint ipEndpoint;
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if (client.TryGet(out ipEndpoint) && ipEndpoint.RemoteEndPoint != null)
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{
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IPAddress end = ipEndpoint.RemoteEndPoint.Address;
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try
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{
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IPHostEntry rDNS = Dns.GetHostEntry(end);
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foreach (string ban in bans)
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{
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if (rDNS.HostName.Contains(ban) ||
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end.ToString().StartsWith(ban))
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{
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client.Disconnect("Banned - network \"" + ban + "\" is not allowed to connect to this server.");
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m_log.Warn("[IPBAN] Disconnected '" + end + "' due to '" + ban + "' ban.");
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return;
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}
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}
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}
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catch (System.Net.Sockets.SocketException)
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{
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m_log.WarnFormat("[IPBAN] IP address \"{0}\" cannot be resolved via DNS", end);
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}
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// m_log.DebugFormat("[IPBAN] User \"{0}\" not in any ban lists. Allowing connection.", end);
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}
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}
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}
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}
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}
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