Scissors/patches/server/0031-Prevent-invalid-container-events.patch
2023-06-17 00:35:19 +01:00

47 lines
2.5 KiB
Diff

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 6abdf9ac215fbe8015459258a6783d31e0a3933f..afc17ec86d12cefc30c2aabd86a04131f7dffdb6 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -30,6 +30,8 @@ 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;
@@ -2988,6 +2990,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
public void handleContainerClick(ServerboundContainerClickPacket packet) {
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel());
if (this.player.isImmobile()) return; // CraftBukkit
+
this.player.resetLastActionTime();
if (this.player.containerMenu.containerId == packet.getContainerId() && this.player.containerMenu.stillValid(this.player)) { // CraftBukkit
boolean cancelled = this.player.isSpectator(); // CraftBukkit - see below if
@@ -3009,6 +3012,18 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
return;
}
+ // Scissors start - Do not call events when the slot/button number is invalid
+ final int sentSlotNum = packet.getSlotNum();
+ if((Mth.clamp(sentSlotNum, -1, this.player.containerMenu.slots.size() - 1) != sentSlotNum) && sentSlotNum != -999)
+ {
+ this.getCraftPlayer().kick(
+ net.kyori.adventure.text.Component.text("Invalid container click slot (Hacking?)")
+ .color(NamedTextColor.RED)
+ );
+ return;
+ }
+ // Scissors end
+
InventoryView inventory = this.player.containerMenu.getBukkitView();
SlotType type = inventory.getSlotType(packet.getSlotNum());