Scissors/patches/server/0057-Fix-packet-related-lag-exploits.patch

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 d3fd35a33da5ce40667781f7ee35e89531b4ea96..f92385c4f72fce6ceec40e21ea081eeb1bd8fc25 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -866,7 +866,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
             this.player.sendMessage(new TranslatableComponent("advMode.notEnabled"), Util.NIL_UUID);
         } else if (!this.player.canUseGameMasterBlocks() && (!this.player.isCreative() || !this.player.getBukkitEntity().hasPermission("minecraft.commandblock"))) { // Paper - command block permission
             this.player.sendMessage(new TranslatableComponent("advMode.notAllowed"), Util.NIL_UUID);
-        } else {
+        } else if (this.player.level.isLoadedAndInBounds(packet.getPos())) { // Scissors
             BaseCommandBlock commandblocklistenerabstract = null;
             CommandBlockEntity tileentitycommand = null;
             BlockPos blockposition = packet.getPos();
@@ -1027,7 +1027,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
     @Override
     public void handleSetStructureBlock(ServerboundSetStructureBlockPacket packet) {
         PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
-        if (!ScissorsConfig.disableGameMasterBlocks && this.player.canUseGameMasterBlocks()) {  // Scissors - Add configuration option to completely disable game master blocks
+        if (!ScissorsConfig.disableGameMasterBlocks && 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);
@@ -1085,7 +1085,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
     @Override
     public void handleSetJigsawBlock(ServerboundSetJigsawBlockPacket packet) {
         PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
-        if (!ScissorsConfig.disableGameMasterBlocks && this.player.canUseGameMasterBlocks()) {  // Scissors - Add configuration option to completely disable game master blocks
+        if (!ScissorsConfig.disableGameMasterBlocks && 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);
@@ -1108,7 +1108,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
     @Override
     public void handleJigsawGenerate(ServerboundJigsawGeneratePacket packet) {
         PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
-        if (!ScissorsConfig.disableGameMasterBlocks && this.player.canUseGameMasterBlocks()) {  // Scissors - Add configuration option to completely disable game master blocks
+        if (!ScissorsConfig.disableGameMasterBlocks && this.player.canUseGameMasterBlocks() && this.player.level.isLoadedAndInBounds(packet.getPos())) { // Scissors
             BlockPos blockposition = packet.getPos();
             BlockEntity tileentity = this.player.level.getBlockEntity(blockposition);