From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Allink <arclicious@vivaldi.net>
Date: Sun, 10 Jul 2022 02:55:01 +0100
Subject: [PATCH] Prevent invalid container events


diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index d053c7547db965cd103a6edf56916f3c6e98a673..1f5553977de20cc52ba654fbaf56c5002d561bb4 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -31,6 +31,8 @@ import java.util.function.UnaryOperator;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 import javax.annotation.Nullable;
+
+import net.kyori.adventure.text.format.NamedTextColor;
 import net.minecraft.ChatFormatting;
 import net.minecraft.CrashReport;
 import net.minecraft.CrashReportCategory;
@@ -3034,6 +3036,17 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
                     }
 
                     if (packet.getClickType() != net.minecraft.world.inventory.ClickType.QUICK_CRAFT) {
+                        // Scissors start - Do not call events when the slot/button number is invalid
+                        if(packet.getSlotNum() > 45)
+                        {
+                            this.getCraftPlayer().kick(
+                                net.kyori.adventure.text.Component.text("Invalid container click slot (Hacking?)")
+                                    .color(NamedTextColor.RED)
+                            );
+                            return;
+                        }
+                        // Scissors end
+
                         if (click == ClickType.NUMBER_KEY) {
                             event = new InventoryClickEvent(inventory, type, packet.getSlotNum(), click, action, packet.getButtonNum());
                         } else {