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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-12-16 03:20:07 +01:00
Paper/patches/server/0434-Prevent-position-desync-in-playerconnection-causing-.patch
Nassim Jahnke 0ddd20c6f7
Updated Upstream (CraftBukkit/Spigot)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
ead719a65 SPIGOT-7136: Cancelling PlayerInteractEntityEvent with the Allay desyncs
8468e167e SPIGOT-7137: StructureGrowEvent isFromBonemeal and getPlayer have incorrect values
d45057c59 SPIGOT-7089: Crash when command blocks attempt to load worlds

Spigot Changes:
450dcaa8 Rebuild patches
2022-08-14 10:03:13 +02:00

32 Zeilen
1.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Fri, 12 Jun 2020 16:51:39 -0700
Subject: [PATCH] Prevent position desync in playerconnection causing tp
exploit
Caused the server to revert to the player's overworld coordinates
after teleporting into the end.
Sidenote: The underlying issue is that the move call can teleport
entities and do other things like kill the entity. In the future,
to fix all exploits derieved from this usually unexpected
behaviour, we need to move all of this dangerous logic outside
of the move call and into an appropriate place in the tick method.
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 0bfd835a22b8bc353878f3f9b04564d6f3049279..a8014da4583bac40deecd439bb59287bf1de56f4 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1452,6 +1452,11 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
this.player.move(MoverType.PLAYER, new Vec3(d7, d8, d9));
this.player.onGround = packet.isOnGround(); // CraftBukkit - SPIGOT-5810, SPIGOT-5835, SPIGOT-6828: reset by this.player.move
+ // Paper start - prevent position desync
+ if (this.awaitingPositionFromClient != null) {
+ return; // ... thanks Mojang for letting move calls teleport across dimensions.
+ }
+ // Paper end - prevent position desync
double d12 = d8;
d7 = d0 - this.player.getX();