27 Zeilen
1.8 KiB
Diff
27 Zeilen
1.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Sat, 2 May 2020 03:09:46 -0400
|
|
Subject: [PATCH] Validate PickItem Packet and kick for invalid
|
|
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
|
|
index 9a7a1ebc7b0d4b013575da622ee149249d39590c..37b7925b0c6dea0920d67cacf3b1982e8034e202 100644
|
|
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
|
|
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
|
|
@@ -735,7 +735,14 @@ public class PlayerConnection implements PacketListenerPlayIn {
|
|
@Override
|
|
public void a(PacketPlayInPickItem packetplayinpickitem) {
|
|
PlayerConnectionUtils.ensureMainThread(packetplayinpickitem, this, this.player.getWorldServer());
|
|
- this.player.inventory.c(packetplayinpickitem.b());
|
|
+ // Paper start - validate pick item position
|
|
+ if (!(packetplayinpickitem.b() >= 0 && packetplayinpickitem.b() < this.player.inventory.items.size())) {
|
|
+ PlayerConnection.LOGGER.warn("{} tried to set an invalid carried item", this.player.getDisplayName().getString());
|
|
+ this.disconnect("Invalid hotbar selection (Hacking?)");
|
|
+ return;
|
|
+ }
|
|
+ this.player.inventory.c(packetplayinpickitem.b()); // Paper - Diff above if changed
|
|
+ // Paper end
|
|
this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(-2, this.player.inventory.itemInHandIndex, this.player.inventory.getItem(this.player.inventory.itemInHandIndex)));
|
|
this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(-2, packetplayinpickitem.b(), this.player.inventory.getItem(packetplayinpickitem.b())));
|
|
this.player.playerConnection.sendPacket(new PacketPlayOutHeldItemSlot(this.player.inventory.itemInHandIndex));
|