Paper/patches/server/0930-Treat-sequence-violations-like-they-should-be.patch
2023-09-22 16:26:10 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Thu, 30 Mar 2023 03:13:58 +0100
Subject: [PATCH] Treat sequence violations like they should be
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index dafd15487831fc2269d23e04a001e3c4c33bb9ba..3ea992964ac73b2348464e923547c7a762f1f65a 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2011,6 +2011,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
public void ackBlockChangesUpTo(int sequence) {
if (sequence < 0) {
+ this.disconnect("Expected packet sequence nr >= 0", org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_ACTION); // Paper
throw new IllegalArgumentException("Expected packet sequence nr >= 0");
} else {
this.ackBlockChangesUpTo = Math.max(sequence, this.ackBlockChangesUpTo);