From ea606c2b1fe69dceefcbecdd3a296ac694e86e36 Mon Sep 17 00:00:00 2001 From: Zach Brown 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 4ad072ad8..73bf74422 100644 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java @@ -391,4 +391,12 @@ 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/server/EntityFallingBlock.java b/src/main/java/net/minecraft/server/EntityFallingBlock.java index 8059e6dcd..a4f465e38 100644 --- a/src/main/java/net/minecraft/server/EntityFallingBlock.java +++ b/src/main/java/net/minecraft/server/EntityFallingBlock.java @@ -251,6 +251,14 @@ public class EntityFallingBlock extends Entity { this.block = Block.getById(nbttagcompound.getByte("Tile") & 255).fromLegacyData(i); } + // Paper start - Block FallingBlocks with Command Blocks + // Check mappings on update - dc = "repeating_command_block" - dd = "chain_command_block" + final Block b = this.block.getBlock(); + if (this.world.paperConfig.filterNBTFromSpawnEgg && (b == Blocks.COMMAND_BLOCK || b == Blocks.dc || b == Blocks.dd)) { + this.block = Blocks.STONE.getBlockData(); + } + // Paper end + this.ticksLived = nbttagcompound.getInt("Time"); Block block = this.block.getBlock(); diff --git a/src/main/java/net/minecraft/server/ItemMonsterEgg.java b/src/main/java/net/minecraft/server/ItemMonsterEgg.java index 1a01a57d2..f914ad417 100644 --- a/src/main/java/net/minecraft/server/ItemMonsterEgg.java +++ b/src/main/java/net/minecraft/server/ItemMonsterEgg.java @@ -102,7 +102,14 @@ public class ItemMonsterEgg extends Item { NBTTagCompound nbttagcompound1 = entity.e(new NBTTagCompound()); UUID uuid = entity.getUniqueID(); - nbttagcompound1.a(nbttagcompound.getCompound("EntityTag")); + // Paper start - Filter out position and motion information + final NBTTagCompound entityTag = nbttagcompound.getCompound("EntityTag"); + if (world.paperConfig.filterNBTFromSpawnEgg) { + entityTag.remove("Pos"); + entityTag.remove("Motion"); + } + nbttagcompound1.a(entityTag); + // Paper end entity.a(uuid); entity.f(nbttagcompound1); } -- 2.11.0