From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 1 Jul 2020 04:50:22 -0400
Subject: [PATCH] Convert legacy attributes in Item Meta


diff --git a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeMap.java b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeMap.java
index bf3b236b2090fe4dd67e2f87b0b27c8d7186cb48..c5dd25add39298342a6f4b2a05e137de93d1e62b 100644
--- a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeMap.java
+++ b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeMap.java
@@ -13,6 +13,20 @@ import org.bukkit.craftbukkit.util.CraftNamespacedKey;
 public class CraftAttributeMap implements Attributable {
 
     private final AttributeMapBase handle;
+    // Paper start - convert legacy attributes
+    private static final com.google.common.collect.ImmutableMap<String, String> legacyNMS = com.google.common.collect.ImmutableMap.<String, String>builder().put("generic.maxHealth", "generic.max_health").put("Max Health", "generic.max_health").put("zombie.spawnReinforcements", "zombie.spawn_reinforcements").put("Spawn Reinforcements Chance", "zombie.spawn_reinforcements").put("horse.jumpStrength", "horse.jump_strength").put("Jump Strength", "horse.jump_strength").put("generic.followRange", "generic.follow_range").put("Follow Range", "generic.follow_range").put("generic.knockbackResistance", "generic.knockback_resistance").put("Knockback Resistance", "generic.knockback_resistance").put("generic.movementSpeed", "generic.movement_speed").put("Movement Speed", "generic.movement_speed").put("generic.flyingSpeed", "generic.flying_speed").put("Flying Speed", "generic.flying_speed").put("generic.attackDamage", "generic.attack_damage").put("generic.attackKnockback", "generic.attack_knockback").put("generic.attackSpeed", "generic.attack_speed").put("generic.armorToughness", "generic.armor_toughness").build();
+
+    public static String convertIfNeeded(String nms) {
+        if (nms == null) {
+            return null;
+        }
+        nms = legacyNMS.getOrDefault(nms, nms);
+        if (!nms.toLowerCase().equals(nms) || nms.indexOf(' ') != -1) {
+            return null;
+        }
+        return nms;
+    }
+    // Paper end
 
     public CraftAttributeMap(AttributeMapBase handle) {
         this.handle = handle;
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index fe4aa562aa5a938dea9cd083ccff8c9cb28a7159..8f48b58c98ba40d5d7deb6775957e2c6b4d334c6 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -492,7 +492,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
 
             AttributeModifier attribMod = CraftAttributeInstance.convert(nmsModifier);
 
-            String attributeName = entry.getString(ATTRIBUTES_IDENTIFIER.NBT);
+            String attributeName = CraftAttributeMap.convertIfNeeded(entry.getString(ATTRIBUTES_IDENTIFIER.NBT)); // Paper
             if (attributeName == null || attributeName.isEmpty()) {
                 continue;
             }