[Share] Unk Packets spam Protection

[SySt3MGaM3RFr3aKs]

Unknown Packets Protection Spam. ( This diff is for Interlude L2J but with some modifications can be inserted in Gracia Final or Gracia pt2 etc )

 

Your server will have protections from PHX Spammers, sending unknown packets.

 

Diff file:

Index: C:/Workspace/L2_GameServer_It/java/config/server.properties
===================================================================
--- C:/Workspace/L2_GameServer_It/java/config/server.properties	(revision 1025)
+++ C:/Workspace/L2_GameServer_It/java/config/server.properties	(working copy)
@@ -69,6 +69,16 @@
# Define how many players are allowed to play simultaneously on your server.
MaximumOnlineUsers=100

+# Activate Protection for unknownPacket flooding
+PacketProtection = False
+# How much unknown packets before punishment.
+# If the player send more than 5 unknownPackets per second, the player get punished.
+UnknownPacketsBeforeBan = 5
+# Punishments
+# 1 - broadcast warning to gms only
+# 2 - kick player (default)
+# 3 - kick & ban player (Accesslevel -99)
+UnknownPacketsPunishment = 2

# Minimum and maximum protocol revision that server allow to connect.
# You must keep MinProtocolRevision <= MaxProtocolRevision.
Index: C:/Workspace/L2_GameServer_It/java/net/sf/l2j/Config.java
===================================================================
--- C:/Workspace/L2_GameServer_It/java/net/sf/l2j/Config.java	(revision 1025)
+++ C:/Workspace/L2_GameServer_It/java/net/sf/l2j/Config.java	(working copy)
@@ -78,6 +78,10 @@
    /** Maximum number of players allowed to play simultaneously on server */
    public static int   MAXIMUM_ONLINE_USERS;
    
+    public static boolean ENABLE_PACKET_PROTECTION;
+    public static int MAX_UNKNOWN_PACKETS;
+    public static int UNKNOWN_PACKETS_PUNiSHMENT;
+    
    // Setting for serverList
    /** Displays [] in front of server name ? */
    public static boolean SERVER_LIST_BRACKET;
@@ -1120,6 +1124,10 @@

                MAX_CHARACTERS_NUMBER_PER_ACCOUNT = Integer.parseInt(serverSettings.getProperty("CharMaxNumber", "0"));
                MAXIMUM_ONLINE_USERS        = Integer.parseInt(serverSettings.getProperty("MaximumOnlineUsers", "100"));
+                
+                ENABLE_PACKET_PROTECTION = Boolean.parseBoolean(serverSettings.getProperty("PacketProtection", "false"));
+                MAX_UNKNOWN_PACKETS = Integer.parseInt(serverSettings.getProperty("UnknownPacketsBeforeBan", "5"));
+                UNKNOWN_PACKETS_PUNiSHMENT = Integer.parseInt(serverSettings.getProperty("UnknownPacketsPunishment", "2"));
               
                MIN_PROTOCOL_REVISION   = Integer.parseInt(serverSettings.getProperty("MinProtocolRevision", "660"));
                MAX_PROTOCOL_REVISION   = Integer.parseInt(serverSettings.getProperty("MaxProtocolRevision", "665"));
@@ -2082,6 +2090,10 @@
        else if (pName.equalsIgnoreCase("AutoDeleteInvalidQuestData")) AUTODELETE_INVALID_QUEST_DATA = Boolean.valueOf(pValue);

        else if (pName.equalsIgnoreCase("MaximumOnlineUsers")) MAXIMUM_ONLINE_USERS = Integer.parseInt(pValue);
+        
+        else if (pName.equalsIgnoreCase("PacketProtection")) ENABLE_PACKET_PROTECTION = Boolean.parseBoolean(pValue);
+        else if (pName.equalsIgnoreCase("UnknownPacketsBeforeBan")) MAX_UNKNOWN_PACKETS = Integer.parseInt(pValue);
+        else if (pName.equalsIgnoreCase("UnknownPacketsPunishment")) UNKNOWN_PACKETS_PUNiSHMENT = Integer.parseInt(pValue);

        else if (pName.equalsIgnoreCase("ZoneTown")) ZONE_TOWN = Integer.parseInt(pValue);

Index: C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/network/L2GameClient.java
===================================================================
--- C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/network/L2GameClient.java	(revision 1025)
+++ C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/network/L2GameClient.java	(working copy)
@@ -41,6 +41,7 @@
import net.sf.l2j.gameserver.model.actor.instance.L2PcInstance;
import net.sf.l2j.gameserver.model.entity.L2Event;
import net.sf.l2j.gameserver.serverpackets.L2GameServerPacket;
+import net.sf.l2j.gameserver.util.FloodProtector;
import net.sf.l2j.util.EventData;

import com.l2jserver.mmocore.network.MMOClient;
@@ -84,6 +85,9 @@
	// Flood protection
	public byte packetsSentInSec = 0;
	public int packetsSentStartTick = 0;
+	 
+    // UnknownPacket protection
+    private int unknownPacketCount = 0;

	public L2GameClient(MMOConnection<L2GameClient> con)
	{
@@ -489,6 +493,26 @@
    	}
    }
    
+    public boolean checkUnknownPackets()
+	{
+		if(this.getActiveChar() != null && 
+				!FloodProtector.getInstance().tryPerformAction(this.getActiveChar().getObjectId(), FloodProtector.PROTECTED_UNKNOWNPACKET))
+		{
+			unknownPacketCount++;
+			if (unknownPacketCount >= Config.MAX_UNKNOWN_PACKETS)
+			{
+				return true;
+			}
+			else
+				return false;
+		}
+		else
+		{
+			unknownPacketCount = 0;
+			return false;
+		}
+	}
+    
    /**
     * Produces the best possible string representation of this client.
     */
Index: C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/network/L2GamePacketHandler.java
===================================================================
--- C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/network/L2GamePacketHandler.java	(revision 1025)
+++ C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/network/L2GamePacketHandler.java	(working copy)
@@ -18,10 +18,13 @@
package net.sf.l2j.gameserver.network;

import java.nio.ByteBuffer;
+import java.sql.Time;
import java.util.concurrent.RejectedExecutionException;
import java.util.logging.Logger;

import net.sf.l2j.Config;
+import net.sf.l2j.gameserver.GmListTable;
+import net.sf.l2j.gameserver.LoginServerThread;
import net.sf.l2j.gameserver.ThreadPoolManager;
import net.sf.l2j.gameserver.clientpackets.*;
import net.sf.l2j.gameserver.network.L2GameClient.GameClientState;
@@ -811,6 +814,8 @@
     	byte[] array = new byte[size];
     	buf.get(array);
     	_log.warning(Util.printData(array, size));
+     	if (Config.ENABLE_PACKET_PROTECTION)
+     		unknownPacketProtection(client);
	}

	private void printDebugDoubleOpcode(int opcode, int id2, ByteBuffer buf, GameClientState state, L2GameClient client)
@@ -820,7 +825,50 @@
     	byte[] array = new byte[size]; 
     	buf.get(array);
     	_log.warning(Util.printData(array, size));
+     	if (Config.ENABLE_PACKET_PROTECTION)
+     		unknownPacketProtection(client);
	}
+	
+	private void unknownPacketProtection(L2GameClient client)
+	{
+		if(client.getActiveChar() != null && client.checkUnknownPackets())
+		{
+			punish(client);
+			return;
+		}
+	}
+	
+	private void punish(L2GameClient client)
+	{
+		switch(Config.UNKNOWN_PACKETS_PUNiSHMENT)
+		{
+			case(1):
+				if (client.getActiveChar() != null)
+				{
+					GmListTable.broadcastMessageToGMs("Player " + client.getActiveChar().toString() + " flooding unknown packets.");
+				}
+				break;
+			case(2):
+				_log.warning("PacketProtection: " + client.toString() + " got kicked due flooding of unknown packets");
+				if (client.getActiveChar() != null) 
+				{
+					GmListTable.broadcastMessageToGMs("Player " + client.getActiveChar().toString() + " flooding unknown packets and got kicked.");
+					client.getActiveChar().sendMessage("You are will be kicked for unknown packet flooding, GM informed.");
+					client.getActiveChar().closeNetConnection();
+				}
+				break;
+			case(3):
+				_log.warning("PacketProtection: " + client.toString() + " got banned due flooding of unknown packets");
+				LoginServerThread.getInstance().sendAccessLevel(client.getAccountName(), -99);
+				if(client.getActiveChar() != null)
+				{
+					GmListTable.broadcastMessageToGMs("Player " + client.getActiveChar().toString() + " flooding unknown packets and got banned.");
+					client.getActiveChar().sendMessage("You are banned for unknown packet flooding, GM informed.");
+					client.getActiveChar().closeNetConnection();
+				}
+				break;
+		}
+	}

	// impl
	public L2GameClient create(MMOConnection<L2GameClient> con)
Index: C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/util/FloodProtector.java
===================================================================
--- C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/util/FloodProtector.java	(revision 1025)
+++ C:/Workspace/L2_GameServer_It/java/net/sf/l2j/gameserver/util/FloodProtector.java	(working copy)
@@ -50,15 +50,16 @@

	// =========================================================
	// Enum
-	private static final int PROTECTEDACTIONSIZE = 3;
+	private static final int PROTECTEDACTIONSIZE = 4;

	// reuse delays for protected actions (in game ticks 1 tick = 100ms)
-	private static final int[] REUSEDELAY = new int[]{ 4, 42, 42 };
+	private static final int[] REUSEDELAY = new int[]{ 4, 42, 42, 15 };

	// protected actions
	public static final int PROTECTED_USEITEM	= 0;
	public static final int PROTECTED_ROLLDICE	= 1;
	public static final int PROTECTED_FIREWORK	= 2;
+	public static final int PROTECTED_UNKNOWNPACKET = 3;

	// =========================================================
	// Constructor

 

Note: this is not 100% Mine, i just make some modifications to make it work on Interlude. Thank you.

 

So, Credits: L2JForum,

[Intrepid]

you cant do such thing on your own why you are in the credits?

[kikboxer]

what is it? I dont understand.....

[bauwbas]

Your server will have protections from PHX Spammers, sending unknown packets.

 

kikboxer read, becore posting.

[SySt3MGaM3RFr3aKs]

you cant do such thing on your own why you are in the credits?

I rewrited it, nothing special, i will delete the credits relax.

[Alexi]

Thnx for that but i think this can be used only on C4 ,C5 cuz on all other chronicles it exist...

[SySt3MGaM3RFr3aKs]

Thnx for that but i think this can be used only on C4 ,C5 cuz on all other chronicles it exist...

It doesn't exists in any Chronicle of L2J, not in c4, c5, c6, Kamael nowhere.

[Intrepid]

It doesn't exists in any Chronicle of L2J, not in c4, c5, c6, Kamael nowhere.

 

ok than flood with unknown packet a gracia server dumbass its dont exists in it for a reason...

[SySt3MGaM3RFr3aKs]

ok than flood with unknown packet a gracia server dumbass its dont exists in it for a reason...

Ofcourse jerk. Is not existing there for a reason.

[Intrepid]

Ofcourse jerk. Is not existing there for a reason.

 

reason = dont work

[ĐarkSlayer]

reason = dont work

oh come on stop it u make him cry bro :D

[SySt3MGaM3RFr3aKs]

reason = dont work

Maybe in Gracia Final

 

oh come on stop it u make him cry bro :D

Watch your language.

[ĐarkSlayer]

Maybe in Gracia Final

Watch your language.

my language? please first read what u write and then post it plx ! my language is fine :) i just sayd to intrepid to stop cause ur gonna cry like a baby ;)

[Alexi]

Ohh plz dont start flame,so with this you will have full protect from Phx, i dont know why but i cant trust it...

[Intrepid]

Ohh plz dont start flame,so with this you will have full protect from Phx, i dont know why but i cant trust it...

 

no thats not true ONLY if you use INTERLUDE you have with that protection againt 1 exploit with the unknown packet flood thats all