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Fix packet-related lag exploits (1.20.1) (#117)

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* Fix packet-related lag exploits

* Fix oopsie
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Luna 2023-07-05 12:08:19 -03:00 committed by GitHub
parent 2109ba025d
commit 5b98ad272f
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1 changed files with 46 additions and 0 deletions
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patches/server/0050-Fix-packet-related-lag-exploits.patch Normal file
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@ -0,0 +1,46 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Luna <lunahatesgogle@gmail.com>
Date: Tue, 4 Jul 2023 18:49:34 -0300
Subject: [PATCH] Fix packet-related lag exploits
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index fbc247d364d3cdee94b04b1108c99d2909b1773a..17faa1416b1e4145a81a0fff5726c6672abf008b 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -965,7 +965,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
this.player.sendSystemMessage(Component.translatable("advMode.notEnabled"));
} else if (!this.player.canUseGameMasterBlocks() && (!this.player.isCreative() || !this.player.getBukkitEntity().hasPermission("minecraft.commandblock"))) { // Paper - command block permission
this.player.sendSystemMessage(Component.translatable("advMode.notAllowed"));
- } else {
+ } else if (this.player.level().isLoadedAndInBounds(packet.getPos())) { // Scissors
BaseCommandBlock commandblocklistenerabstract = null;
CommandBlockEntity tileentitycommand = null;
BlockPos blockposition = packet.getPos();
@@ -1125,7 +1125,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
@Override
public void handleSetStructureBlock(ServerboundSetStructureBlockPacket packet) {
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel());
- if (this.player.canUseGameMasterBlocks()) {
+ if (this.player.canUseGameMasterBlocks() && this.player.level().isLoadedAndInBounds(packet.getPos())) { // Scissors
BlockPos blockposition = packet.getPos();
BlockState iblockdata = this.player.level().getBlockState(blockposition);
BlockEntity tileentity = this.player.level().getBlockEntity(blockposition);
@@ -1183,7 +1183,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
@Override
public void handleSetJigsawBlock(ServerboundSetJigsawBlockPacket packet) {
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel());
- if (this.player.canUseGameMasterBlocks()) {
+ if (this.player.canUseGameMasterBlocks() && this.player.level().isLoadedAndInBounds(packet.getPos())) { // Scissors
BlockPos blockposition = packet.getPos();
BlockState iblockdata = this.player.level().getBlockState(blockposition);
BlockEntity tileentity = this.player.level().getBlockEntity(blockposition);
@@ -1206,7 +1206,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
@Override
public void handleJigsawGenerate(ServerboundJigsawGeneratePacket packet) {
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel());
- if (this.player.canUseGameMasterBlocks()) {
+ if (this.player.canUseGameMasterBlocks() && this.player.level().isLoadedAndInBounds(packet.getPos())) { // Scissors
BlockPos blockposition = packet.getPos();
BlockEntity tileentity = this.player.level().getBlockEntity(blockposition);