Removal of IPv4Filter class.

2021-02-23 05:04:57 +00:00
parent 82c816ccbf
commit 18216eecf6
29 changed files with 58 additions and 3187 deletions
--- a/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/loginserver/network/util/IPv4Filter.java
+++ b/L2J_Mobius_Classic_Interlude/java/org/l2jmobius/loginserver/network/util/IPv4Filter.java
@@ -1,149 +0,0 @@
-/*
- * This file is part of the L2J Mobius project.
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package org.l2jmobius.loginserver.network.util;
-
-import java.net.Inet4Address;
-import java.net.InetAddress;
-import java.nio.channels.SocketChannel;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.Map.Entry;
-import java.util.logging.Logger;
-
-import org.l2jmobius.commons.util.Chronos;
-
-/**
- * IPv4 filter.
- * @author Forsaiken
- */
-public class IPv4Filter implements Runnable
-{
-	protected final Logger LOGGER = Logger.getLogger(getClass().getName());
-	
-	private final HashMap<Integer, Flood> _ipFloodMap;
-	private static final long SLEEP_TIME = 5000;
-	
-	public IPv4Filter()
-	{
-		_ipFloodMap = new HashMap<>();
-		final Thread t = new Thread(this, getClass().getSimpleName());
-		t.setDaemon(true);
-		t.start();
-	}
-	
-	/**
-	 * @param ip
-	 * @return
-	 */
-	private static int hash(byte[] ip)
-	{
-		return (ip[0] & 0xFF) | ((ip[1] << 8) & 0xFF00) | ((ip[2] << 16) & 0xFF0000) | ((ip[3] << 24) & 0xFF000000);
-	}
-	
-	protected static final class Flood
-	{
-		long lastAccess;
-		int trys;
-		
-		Flood()
-		{
-			lastAccess = Chronos.currentTimeMillis();
-			trys = 0;
-		}
-	}
-	
-	public boolean accept(SocketChannel sc)
-	{
-		final InetAddress addr = sc.socket().getInetAddress();
-		if (!(addr instanceof Inet4Address))
-		{
-			LOGGER.info("Someone tried to connect from something other than IPv4: " + addr.getHostAddress());
-			return false;
-		}
-		
-		final int h = hash(addr.getAddress());
-		final long current = Chronos.currentTimeMillis();
-		Flood f;
-		synchronized (_ipFloodMap)
-		{
-			f = _ipFloodMap.get(h);
-		}
-		if (f != null)
-		{
-			if (f.trys == -1)
-			{
-				f.lastAccess = current;
-				return false;
-			}
-			
-			if ((f.lastAccess + 1000) > current)
-			{
-				f.lastAccess = current;
-				if (f.trys >= 3)
-				{
-					f.trys = -1;
-					return false;
-				}
-				
-				f.trys++;
-			}
-			else
-			{
-				f.lastAccess = current;
-			}
-		}
-		else
-		{
-			synchronized (_ipFloodMap)
-			{
-				_ipFloodMap.put(h, new Flood());
-			}
-		}
-		
-		return true;
-	}
-	
-	@Override
-	public void run()
-	{
-		while (true)
-		{
-			final long reference = Chronos.currentTimeMillis() - (1000 * 300);
-			synchronized (_ipFloodMap)
-			{
-				final Iterator<Entry<Integer, Flood>> it = _ipFloodMap.entrySet().iterator();
-				while (it.hasNext())
-				{
-					final Flood f = it.next().getValue();
-					if (f.lastAccess < reference)
-					{
-						it.remove();
-					}
-				}
-			}
-			
-			try
-			{
-				Thread.sleep(SLEEP_TIME);
-			}
-			catch (InterruptedException e)
-			{
-				return;
-			}
-		}
-	}
-}