Paper/patches/server/0110-Filter-bad-data-from-ArmorStand-and-SpawnEgg-items.patch
2021-11-30 19:26:33 +01:00

47 lines
2.5 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Sat, 12 Nov 2016 23:25:22 -0600
Subject: [PATCH] Filter bad data from ArmorStand and SpawnEgg items
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 80345730b8ccc11d3d0833485d25b03f614aeee2..6eb3678177834a4b34b78ba8e359528de7c0d2f0 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -352,4 +352,12 @@ public class PaperWorldConfig {
private void removeCorruptTEs() {
removeCorruptTEs = getBoolean("remove-corrupt-tile-entities", false);
}
+
+ public boolean filterNBTFromSpawnEgg = true;
+ private void fitlerNBTFromSpawnEgg() {
+ filterNBTFromSpawnEgg = getBoolean("filter-nbt-data-from-spawn-eggs-and-related", true);
+ if (!filterNBTFromSpawnEgg) {
+ Bukkit.getLogger().warning("Spawn Egg and Armor Stand NBT filtering disabled, this is a potential security risk");
+ }
+ }
}
diff --git a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
index 0366303a986ae6da8e95ed3051610c432a790194..a8a9cbcece45c3480120cb2fa0fa03523a87d317 100644
--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
@@ -324,6 +324,18 @@ public class FallingBlockEntity extends Entity {
@Override
protected void readAdditionalSaveData(CompoundTag nbt) {
this.blockState = NbtUtils.readBlockState(nbt.getCompound("BlockState"));
+ // Paper start - Block FallingBlocks with Command Blocks
+ final Block b = this.blockState.getBlock();
+ if (this.level.paperConfig.filterNBTFromSpawnEgg
+ && (b == Blocks.COMMAND_BLOCK
+ || b == Blocks.REPEATING_COMMAND_BLOCK
+ || b == Blocks.CHAIN_COMMAND_BLOCK
+ || b == Blocks.JIGSAW
+ || b == Blocks.STRUCTURE_BLOCK
+ || b instanceof net.minecraft.world.level.block.GameMasterBlock)) {
+ this.blockState = Blocks.STONE.defaultBlockState();
+ }
+ // Paper end
this.time = nbt.getInt("Time");
if (nbt.contains("HurtEntities", 99)) {
this.hurtEntities = nbt.getBoolean("HurtEntities");