AnarchyExploitFixesFolia/src/main/java/me/xginko/aef/modules/packets/WindowClickCrash.java - master - minecraftbackup/AnarchyExploitFixes

AnarchyExploitFixesFolia/src/main/java/me/xginko/aef/modules/packets/WindowClickCrash.java
85 строк3 KB
Ginko
2.7.2 release (#233)
13 авг 2024, 08:21
13 авг 2024, 08:21d20da6e
package me.xginko.aef.modules.packets;

import com.github.retrooper.packetevents.event.PacketListenerPriority;
import com.github.retrooper.packetevents.event.PacketReceiveEvent;
import com.github.retrooper.packetevents.protocol.packettype.PacketType;
import com.github.retrooper.packetevents.wrapper.play.client.WrapperPlayClientClickWindow;
import org.bukkit.entity.HumanEntity;

public class WindowClickCrash extends PacketModule {

    private final boolean log, kick;

    public WindowClickCrash() {
        super("patches.window-click-crash-patch", PacketListenerPriority.HIGHEST);
        config.addComment(configPath + ".enable", """
                Patches a variety of different lag and crash methods that work\s
                by sending invalid Window Click packets, causing the server to\s
                dump error logs until it runs out of memory.""");
        this.log = config.getBoolean(configPath + ".log", false);
        this.kick = config.getBoolean(configPath + ".kick-player", false);
    }

    @Override
    public boolean shouldEnable() {
        return config.getBoolean(configPath + ".enable", true);
    }

    @Override
    public void onPacketReceive(PacketReceiveEvent event) {
        if (event.isCancelled()) return;
        if (event.getPacketType() != PacketType.Play.Client.CLICK_WINDOW) return;
        WrapperPlayClientClickWindow packet = new WrapperPlayClientClickWindow(event);

        int button = packet.getButton();

        if (button < 0 || button > 10 && button != 40 && button != 99) {
            event.setCancelled(true);
            onCancel(log, kick, event.getUser());
            return;
        }

        int slot = packet.getSlot();

        if (event.getPlayer() != null) {
            if (((HumanEntity) event.getPlayer()).getOpenInventory().countSlots() < slot) {
                event.setCancelled(true);
                onCancel(log, kick, event.getUser());
                return;
            }
        }

        if (slot != -999 && slot != -1) {
            if (slot < 0) {
                event.setCancelled(true);
                onCancel(log, kick, event.getUser());
            }
            return;
        }

        if (button == 40) {
            event.setCancelled(true);
            onCancel(log, kick, event.getUser());
            return;
        }

        switch (packet.getWindowClickType()) {
            case SWAP, PICKUP_ALL -> {
                event.setCancelled(true);
                onCancel(log, kick, event.getUser());
            }
            case THROW -> {
                if (slot == -1) {
                    event.setCancelled(true);
                    onCancel(log, kick, event.getUser());
                }
            }
            case QUICK_MOVE -> {
                if (slot == -999) {
                    event.setCancelled(true);
                    onCancel(log, kick, event.getUser());
                }
            }
        }
    }
}