Jump to content
MaxCheaters Official Group on Discord
Top.MaxCheaters.com is now OPEN – Lineage 2 Top Listing
  • 0

[HELP]IPVP4 Filter

~Ge0rge~

Asked by ~Ge0rge~,

 Share

Question

~Ge0rge~ Newbie

~Ge0rge~

Posted
Posted

i put IPv4 filter in java side...i compile all ok..but when someone attacks...in gameserver still the i see the packets logs that attack.it didnt fixed? or it send empty packets? can someone explain it?

12 answers to this question

Recommended Posts

  • 0
~Ge0rge~ Newbie

~Ge0rge~

Posted
  • Author
Posted

Someone attacking your server with packets...

as i can see on your title you are L2J Developer so fix it ;)

no one attacks :). i just attack myself to test it...

i have puted ipvp4filter what else should i do -_-

  • 0
Tw3ty Newbie

Tw3ty

Posted
Posted

pfff men i dont have a server to use a linux ...i am just wondering!

and did you change this ? :D

 

net/sf/l2j/gameserver/GameServer.java

-      _selectorThread = new SelectorThread<L2GameClient>(sc, gph, gph, gph, null);
+      _selectorThread = new SelectorThread<L2GameClient>(sc, gph, gph, gph, new IPv4Filter());

 

net/sf/l2j/loginserver/SelectorHelper.java

package net.sf.l2j.loginserver;

-import java.net.InetAddress;
import java.nio.channels.SocketChannel;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map.Entry;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import net.sf.l2j.loginserver.serverpackets.Init;
+import net.sf.l2j.util.IPv4Filter;

import org.mmocore.network.IAcceptFilter;
import org.mmocore.network.IClientFactory;
@@ -33,18 +30,15 @@
  * 
  * @author KenM
  */
-public class SelectorHelper extends Thread implements IMMOExecutor<L2LoginClient>,
+public class SelectorHelper implements IMMOExecutor<L2LoginClient>,
         IClientFactory<L2LoginClient>, IAcceptFilter
{
-   private HashMap<Integer, Flood> _ipFloodMap;
    private ThreadPoolExecutor _generalPacketsThreadPool;
+   private IPv4Filter _ipv4filter;

    public SelectorHelper()
    {
-      _generalPacketsThreadPool = new ThreadPoolExecutor(4, 6, 15L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
-      _ipFloodMap = new HashMap<Integer, Flood>();
-      super.setDaemon(true);
-      super.start();
+      _ipv4filter = new IPv4Filter();
    }

    /**
@@ -73,110 +67,6 @@
     */
    public boolean accept(SocketChannel sc)
    {
-      InetAddress addr = sc.socket().getInetAddress();
-      int h = hash(addr.getAddress());
-      
-      long current = System.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 !LoginController.getInstance().isBannedAddress(addr);
+      return _ipv4filter.accept(sc) && !LoginController.getInstance().isBannedAddress(sc.socket().getInetAddress());
    }
-   
-   /**
-    * 
-    * @param ip
-    * @return
-    */
-   private int hash(byte[] ip)
-   {
-      return ip[0] & 0xFF | ip[1] << 8 & 0xFF00 | ip[2] << 16 & 0xFF0000 | ip[3] << 24
-              & 0xFF000000;
-   }
-   
-   private class Flood
-   {
-      long lastAccess;
-      int trys;
-      
-      Flood()
-      {
-         lastAccess = System.currentTimeMillis();
-         trys = 0;
-      }
-   }
-   
-   /**
-    * 
-    * @see java.lang.Thread#run()
-    */
-   @Override
-   public void run()
-   {
-      while (true)
-      {
-         long reference = System.currentTimeMillis() - (1000 * 300);
-         ArrayList<Integer> toRemove = new ArrayList<Integer>(50);
-         synchronized (_ipFloodMap)
-         {
-            for (Entry<Integer, Flood> e : _ipFloodMap.entrySet())
-            {
-               Flood f = e.getValue();
-               if (f.lastAccess < reference)
-                  toRemove.add(e.getKey());
-            }
-         }
-         
-         synchronized (_ipFloodMap)
-         {
-            for (Integer i : toRemove)
-            {
-               _ipFloodMap.remove(i);
-            }
-         }
-         
-         try
-         {
-            Thread.sleep(5000);
-         }
-         catch (InterruptedException e)
-         {
-            
-         }
-      }
-   }
}

  • 0
~Ge0rge~ Newbie

~Ge0rge~

Posted
  • Author
Posted 

Index: java/net/sf/l2j/gameserver/GameServer.java
===================================================================
--- java/net/sf/l2j/gameserver/GameServer.java	(revision 3898)
+++ java/net/sf/l2j/gameserver/GameServer.java	(working copy)
@@ -59,7 +59,6 @@
import net.sf.l2j.gameserver.datatables.SummonItemsData;
import net.sf.l2j.gameserver.datatables.TeleportLocationTable;
import net.sf.l2j.gameserver.datatables.ZoneData;
-
import net.sf.l2j.gameserver.geoeditorcon.GeoEditorListener;
import net.sf.l2j.gameserver.handler.AdminCommandHandler;
import net.sf.l2j.gameserver.handler.ItemHandler;
@@ -134,6 +133,7 @@
import net.sf.l2j.gameserver.handler.itemhandlers.Firework;
import net.sf.l2j.gameserver.handler.itemhandlers.FishShots;
import net.sf.l2j.gameserver.handler.itemhandlers.Harvester;
+import net.sf.l2j.gameserver.handler.itemhandlers.Maps;
import net.sf.l2j.gameserver.handler.itemhandlers.MercTicket;
import net.sf.l2j.gameserver.handler.itemhandlers.MysteryPotion;
import net.sf.l2j.gameserver.handler.itemhandlers.PaganKeys;
@@ -151,7 +151,6 @@
import net.sf.l2j.gameserver.handler.itemhandlers.SpecialXMas;
import net.sf.l2j.gameserver.handler.itemhandlers.SpiritShot;
import net.sf.l2j.gameserver.handler.itemhandlers.SummonItems;
-import net.sf.l2j.gameserver.handler.itemhandlers.Maps;
import net.sf.l2j.gameserver.handler.skillhandlers.BalanceLife;
import net.sf.l2j.gameserver.handler.skillhandlers.BeastFeed;
import net.sf.l2j.gameserver.handler.skillhandlers.Blow;
@@ -229,6 +228,7 @@
import net.sf.l2j.gameserver.util.DynamicExtension;
import net.sf.l2j.gameserver.util.FloodProtector;
import net.sf.l2j.status.Status;
+import net.sf.l2j.util.IPv4Filter;

import com.l2jserver.mmocore.network.SelectorServerConfig;
import com.l2jserver.mmocore.network.SelectorThread;
@@ -660,6 +660,7 @@
		SelectorServerConfig ssc = new SelectorServerConfig(Config.PORT_GAME);
		L2GamePacketHandler gph = new L2GamePacketHandler();
		_selectorThread = new SelectorThread<L2GameClient>(ssc, gph, gph, gph);
+		_selectorThread.setAcceptFilter(new IPv4Filter());
		_selectorThread.openServerSocket();
		_selectorThread.start();
		_log.config("Maximum Numbers of Connected Players: " + Config.MAXIMUM_ONLINE_USERS);
Index: java/net/sf/l2j/loginserver/SelectorHelper.java
===================================================================
--- java/net/sf/l2j/loginserver/SelectorHelper.java	(revision 3898)
+++ java/net/sf/l2j/loginserver/SelectorHelper.java	(working copy)
@@ -23,6 +23,7 @@
import java.util.concurrent.TimeUnit;

import net.sf.l2j.loginserver.serverpackets.Init;
+import net.sf.l2j.util.IPv4Filter;

import com.l2jserver.mmocore.network.IAcceptFilter;
import com.l2jserver.mmocore.network.IClientFactory;
@@ -37,10 +38,12 @@
public class SelectorHelper implements IMMOExecutor<L2LoginClient>, IClientFactory<L2LoginClient>, IAcceptFilter
{
	private ThreadPoolExecutor _generalPacketsThreadPool;
+	private IPv4Filter _ipv4filter;

	public SelectorHelper()
	{
		_generalPacketsThreadPool = new ThreadPoolExecutor(4, 6, 15L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
+		_ipv4filter = new IPv4Filter();
	}

	/**
@@ -66,7 +69,7 @@
	 */
	public boolean accept(SocketChannel sc)
	{
-		return !LoginController.getInstance().isBannedAddress(sc.socket().getInetAddress());
+		return _ipv4filter.accept(sc) && !LoginController.getInstance().isBannedAddress(sc.socket().getInetAddress());
	}

}
Index: java/net/sf/l2j/util/IPv4Filter.java
===================================================================
--- java/net/sf/l2j/util/IPv4Filter.java	(revision 0)
+++ java/net/sf/l2j/util/IPv4Filter.java	(revision 0)
@@ -0,0 +1,149 @@
+/*
+ * 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 net.sf.l2j.util;
+
+import java.net.InetAddress;
+import java.nio.channels.SocketChannel;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map.Entry;
+
+import com.l2jserver.mmocore.network.IAcceptFilter;
+
+/**
+ * Formatted Forsaiken's IPv4 filter [DrHouse]
+ * 
+ * @author Forsaiken
+ *
+ */
+public class IPv4Filter implements IAcceptFilter, Runnable
+{
+	private HashMap<Integer, Flood> _ipFloodMap;
+
+	private static final long SLEEP_TIME = 5000;
+
+	public IPv4Filter()
+	{
+		_ipFloodMap = new HashMap<Integer, Flood>();
+		Thread t = new Thread(this);
+		t.setDaemon(true);
+		t.start();
+	}
+
+	/**
+	 * 
+	 * @param ip
+	 * @return
+	 */
+	private static final 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 = System.currentTimeMillis();
+			trys = 0;
+		}
+	}
+
+	public boolean accept(SocketChannel arg0)
+	{
+		InetAddress addr = arg0.socket().getInetAddress();
+		int h = hash(addr.getAddress());
+
+		long current = System.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;
+	}
+
+	public void run()
+	{
+		while (true)
+		{
+			long reference = System.currentTimeMillis() - (1000 * 300);
+			ArrayList<Integer> toRemove = new ArrayList<Integer>(50);
+
+			synchronized (_ipFloodMap)
+			{
+				for (Entry<Integer, Flood> e : _ipFloodMap.entrySet())
+				{
+					Flood f = e.getValue();
+					if (f.lastAccess < reference)
+						toRemove.add(e.getKey());
+				}
+			}
+
+			synchronized (_ipFloodMap)
+			{
+				for (Integer i : toRemove)
+				{
+					_ipFloodMap.remove(i);
+				}
+			}
+
+			try
+			{
+				Thread.sleep(SLEEP_TIME);
+			} catch (InterruptedException e)
+			{
+
+			}
+		}
+	}
+}
\ No newline at end of file

 

That is the patch.help!

  • 0
Tw3ty Newbie

Tw3ty

Posted
Posted

I think that the first is better ;)

-      _selectorThread = new SelectorThread<L2GameClient>(sc, gph, gph, gph, null);
+      _selectorThread = new SelectorThread<L2GameClient>(sc, gph, gph, gph, new IPv4Filter());

 

		_selectorThread = new SelectorThread<L2GameClient>(ssc, gph, gph, gph);
+		_selectorThread.setAcceptFilter(new IPv4Filter());

Guest
This topic is now closed to further replies.
 Share
Go to question listing


×
×
  • Create New...

Important Information

This community uses essential cookies to function properly. Non-essential cookies and third-party services are used only with your consent. Read our Privacy Policy and We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue..