Expand NBT filtering from last commit

cc GH-478

Spigot-Server-Patches/0182-Filter-bad-data-from-ArmorStand-and-SpawnEgg-items.patch

@@ -1,28 +1,63 @@
-From e7490178a70a45f8e3a641ae338d65c4a04620eb Mon Sep 17 00:00:00 2001
+From 27f801bd116e4387e6b7b1696b23adf140940e4a 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 9d361cb..651f23e 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
++++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+@@ -403,4 +403,12 @@ 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 dcfdd31..f62fdde 100644
+--- a/src/main/java/net/minecraft/server/EntityFallingBlock.java
++++ b/src/main/java/net/minecraft/server/EntityFallingBlock.java
+@@ -250,6 +250,12 @@ public class EntityFallingBlock extends Entity {
+             this.block = Block.getById(nbttagcompound.getByte("Tile") & 255).fromLegacyData(i);
+         }
+ 
++        // Paper start - Block FallingBlocks with Command Blocks
++        if (this.world.paperConfig.filterNBTFromSpawnEgg && this.block.getBlock() == Blocks.COMMAND_BLOCK) {
++            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 6317cba..06149e8 100644
+index 6317cba..1b3816f 100644
 --- a/src/main/java/net/minecraft/server/ItemMonsterEgg.java
 +++ b/src/main/java/net/minecraft/server/ItemMonsterEgg.java
-@@ -82,8 +82,12 @@ public class ItemMonsterEgg extends Item {
- 
+@@ -83,7 +83,14 @@ 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");
-+                entityTag.remove("Pos");
-+                entityTag.remove("Motion");
++                if (world.paperConfig.filterNBTFromSpawnEgg) {
++                    entityTag.remove("Pos");
++                    entityTag.remove("Motion");
++                }
 +                nbttagcompound1.a(entityTag);
 +                // Paper end
                  entity.a(uuid);
                  entity.f(nbttagcompound1);
              }
 -- 
-2.10.2.windows.1
+2.10.2