Scissors/patches/server/0035-Prevent-invalid-container-events.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Allink <arclicious@vivaldi.net>
Date: Sun, 10 Jul 2022 02:44:05 +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 b0bd0412010320cc624535d6abffe417a135a4dc..e8157a809ed2b018dfd155e8bc712a8c73aa79e6 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -24,6 +24,8 @@ 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;
@@ -2836,6 +2838,17 @@ 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 {