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PaperMC/Spigot-Server-Patches/0068-Handle-Item-Meta-Inconsistencies.patch
Aikar 9787753c4f
[Auto] Updated Upstream (CraftBukkit) 
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
fc10dec5 Don't throw error on invalid data in CraftMetaItem.
2018-09-23 05:06:41 -04:00

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From fe9f75e118fe7e2a336fbe522a55caf9ecdb5f74 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 28 May 2015 23:00:19 -0400
Subject: [PATCH] Handle Item Meta Inconsistencies
First, Enchantment order would blow away seeing 2 items as the same,
however the Client forces enchantment list in a certain order, as well
as does the /enchant command. Anvils can insert it into forced order,
causing 2 same items to be considered different.
This change makes unhandled NBT Tags and Enchantments use a sorted tree map,
so they will always be in a consistent order.
Additionally, the old enchantment API was never updated when ItemMeta
was added, resulting in 2 different ways to modify an items enchantments.
For consistency, the old API methods now forward to use the
ItemMeta API equivalents, and should deprecate the old API's.
diff --git a/src/main/java/net/minecraft/server/ItemStack.java b/src/main/java/net/minecraft/server/ItemStack.java
index 318c4204d..56787ed25 100644
--- a/src/main/java/net/minecraft/server/ItemStack.java
+++ b/src/main/java/net/minecraft/server/ItemStack.java
@@ -7,6 +7,8 @@ import com.mojang.brigadier.StringReader;
import com.mojang.brigadier.exceptions.CommandSyntaxException;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
+import java.util.Collections;
+import java.util.Comparator;
import java.util.Locale;
import java.util.Objects;
import java.util.Random;
@@ -56,6 +58,22 @@ public final class ItemStack {
decimalformat.setDecimalFormatSymbols(DecimalFormatSymbols.getInstance(Locale.ROOT));
return decimalformat;
}
+ // Paper start
+ private static final java.util.Comparator<? super NBTTagCompound> enchantSorter = java.util.Comparator.comparing(o -> o.getString("id"));
+ private void processEnchantOrder(NBTTagCompound tag) {
+ if (tag == null || !tag.hasKeyOfType("Enchantments", 9)) {
+ return;
+ }
+ NBTTagList list = tag.getList("Enchantments", 10);
+ if (list.size() < 2) {
+ return;
+ }
+ try {
+ //noinspection unchecked
+ list.sort((Comparator<? super NBTBase>) enchantSorter); // Paper
+ } catch (Exception ignored) {}
+ }
+ // Paper end
public ItemStack(IMaterial imaterial) {
this(imaterial, 1);
@@ -98,6 +116,7 @@ public final class ItemStack {
if (nbttagcompound.hasKeyOfType("tag", 10)) {
// CraftBukkit start - make defensive copy as this data may be coming from the save thread
this.tag = (NBTTagCompound) nbttagcompound.getCompound("tag").clone();
+ processEnchantOrder(this.tag); // Paper
this.getItem().a(this.tag);
// CraftBukkit end
}
@@ -575,6 +594,7 @@ public final class ItemStack {
// Paper end
public void setTag(@Nullable NBTTagCompound nbttagcompound) {
this.tag = nbttagcompound;
+ processEnchantOrder(this.tag); // Paper
}
public IChatBaseComponent getName() {
@@ -651,6 +671,7 @@ public final class ItemStack {
nbttagcompound.setString("id", String.valueOf(IRegistry.ENCHANTMENT.getKey(enchantment)));
nbttagcompound.setShort("lvl", (short) ((byte) i));
nbttaglist.add((NBTBase) nbttagcompound);
+ processEnchantOrder(nbttagcompound); // Paper
}
public boolean hasEnchantments() {
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
index 1d0580ff7..2733cda40 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
@@ -4,6 +4,7 @@ import static org.bukkit.craftbukkit.inventory.CraftMetaItem.ENCHANTMENTS;
import static org.bukkit.craftbukkit.inventory.CraftMetaItem.ENCHANTMENTS_ID;
import static org.bukkit.craftbukkit.inventory.CraftMetaItem.ENCHANTMENTS_LVL;
+import java.util.Iterator;
import java.util.Map;
import net.minecraft.server.EnchantmentManager;
@@ -186,28 +187,11 @@ public final class CraftItemStack extends ItemStack {
public void addUnsafeEnchantment(Enchantment ench, int level) {
Validate.notNull(ench, "Cannot add null enchantment");
- if (!makeTag(handle)) {
- return;
- }
- NBTTagList list = getEnchantmentList(handle);
- if (list == null) {
- list = new NBTTagList();
- handle.getTag().set(ENCHANTMENTS.NBT, list);
- }
- int size = list.size();
-
- for (int i = 0; i < size; i++) {
- NBTTagCompound tag = (NBTTagCompound) list.get(i);
- String id = tag.getString(ENCHANTMENTS_ID.NBT);
- if (id.equals(ench.getKey().toString())) {
- tag.setShort(ENCHANTMENTS_LVL.NBT, (short) level);
- return;
- }
- }
- NBTTagCompound tag = new NBTTagCompound();
- tag.setString(ENCHANTMENTS_ID.NBT, ench.getKey().toString());
- tag.setShort(ENCHANTMENTS_LVL.NBT, (short) level);
- list.add(tag);
+ // Paper start - Replace whole method
+ final ItemMeta itemMeta = getItemMeta();
+ itemMeta.addEnchant(ench, level, true);
+ setItemMeta(itemMeta);
+ // Paper end
}
static boolean makeTag(net.minecraft.server.ItemStack item) {
@@ -224,66 +208,32 @@ public final class CraftItemStack extends ItemStack {
@Override
public boolean containsEnchantment(Enchantment ench) {
- return getEnchantmentLevel(ench) > 0;
+ return hasItemMeta() && getItemMeta().hasEnchant(ench); // Paper - use meta
}
@Override
public int getEnchantmentLevel(Enchantment ench) {
- Validate.notNull(ench, "Cannot find null enchantment");
- if (handle == null) {
- return 0;
- }
- return EnchantmentManager.getEnchantmentLevel(CraftEnchantment.getRaw(ench), handle);
+ return hasItemMeta() ? getItemMeta().getEnchantLevel(ench) : 0; // Paper - replace entire method with meta
}
@Override
public int removeEnchantment(Enchantment ench) {
Validate.notNull(ench, "Cannot remove null enchantment");
- NBTTagList list = getEnchantmentList(handle), listCopy;
- if (list == null) {
- return 0;
+ // Paper start - replace entire method
+ final ItemMeta itemMeta = getItemMeta();
+ int level = itemMeta.getEnchantLevel(ench);
+ if (level > 0) {
+ itemMeta.removeEnchant(ench);
+ setItemMeta(itemMeta);
}
- int index = Integer.MIN_VALUE;
- int level = Integer.MIN_VALUE;
- int size = list.size();
-
- for (int i = 0; i < size; i++) {
- NBTTagCompound enchantment = (NBTTagCompound) list.get(i);
- String id = enchantment.getString(ENCHANTMENTS_ID.NBT);
- if (id.equals(ench.getKey().toString())) {
- index = i;
- level = 0xffff & enchantment.getShort(ENCHANTMENTS_LVL.NBT);
- break;
- }
- }
-
- if (index == Integer.MIN_VALUE) {
- return 0;
- }
- if (size == 1) {
- handle.getTag().remove(ENCHANTMENTS.NBT);
- if (handle.getTag().isEmpty()) {
- handle.setTag(null);
- }
- return level;
- }
-
- // This is workaround for not having an index removal
- listCopy = new NBTTagList();
- for (int i = 0; i < size; i++) {
- if (i != index) {
- listCopy.add(list.get(i));
- }
- }
- handle.getTag().set(ENCHANTMENTS.NBT, listCopy);
-
return level;
+ // Paper end
}
@Override
public Map<Enchantment, Integer> getEnchantments() {
- return getEnchantments(handle);
+ return hasItemMeta() ? getItemMeta().getEnchants() : ImmutableMap.<Enchantment, Integer>of(); // Paper - use Item Meta
}
static Map<Enchantment, Integer> getEnchantments(net.minecraft.server.ItemStack item) {
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index 99276f116..652866881 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -8,6 +8,7 @@ import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
+import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
@@ -24,6 +25,7 @@ import com.google.common.collect.SetMultimap;
import net.minecraft.server.EnumItemSlot;
import net.minecraft.server.GenericAttributes;
import net.minecraft.server.IChatBaseComponent;
+import com.google.common.collect.ImmutableSortedMap;
import net.minecraft.server.NBTBase;
import net.minecraft.server.NBTTagCompound;
import net.minecraft.server.NBTTagList;
@@ -62,6 +64,7 @@ import java.io.IOException;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.Set;
+import java.util.TreeMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.minecraft.server.EnumChatFormat;
@@ -252,7 +255,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable {
private IChatBaseComponent displayName;
private IChatBaseComponent locName;
private List<String> lore;
- private Map<Enchantment, Integer> enchantments;
+ private EnchantmentMap enchantments; // Paper
private Multimap<Attribute, AttributeModifier> attributeModifiers;
private int repairCost;
private int hideFlag;
@@ -262,7 +265,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable {
private static final Set<String> HANDLED_TAGS = Sets.newHashSet();
private NBTTagCompound internalTag;
- private final Map<String, NBTBase> unhandledTags = new HashMap<String, NBTBase>();
+ private final Map<String, NBTBase> unhandledTags = new TreeMap<>(); // Paper
CraftMetaItem(CraftMetaItem meta) {
if (meta == null) {
@@ -277,7 +280,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable {
}
if (meta.enchantments != null) { // Spigot
- this.enchantments = new HashMap<Enchantment, Integer>(meta.enchantments);
+ this.enchantments = new EnchantmentMap(meta.enchantments); // Paper
}
if (meta.hasAttributeModifiers()) {
@@ -352,13 +355,13 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable {
}
}
- static Map<Enchantment, Integer> buildEnchantments(NBTTagCompound tag, ItemMetaKey key) {
+ static EnchantmentMap buildEnchantments(NBTTagCompound tag, ItemMetaKey key) { // Paper
if (!tag.hasKey(key.NBT)) {
return null;
}
NBTTagList ench = tag.getList(key.NBT, CraftMagicNumbers.NBT.TAG_COMPOUND);
- Map<Enchantment, Integer> enchantments = new HashMap<Enchantment, Integer>(ench.size());
+ EnchantmentMap enchantments = new EnchantmentMap(); // Paper
for (int i = 0; i < ench.size(); i++) {
String id = ((NBTTagCompound) ench.get(i)).getString(ENCHANTMENTS_ID.NBT);
@@ -485,13 +488,13 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable {
void deserializeInternal(NBTTagCompound tag, Object context) {
}
- static Map<Enchantment, Integer> buildEnchantments(Map<String, Object> map, ItemMetaKey key) {
+ static EnchantmentMap buildEnchantments(Map<String, Object> map, ItemMetaKey key) { // Paper
Map<?, ?> ench = SerializableMeta.getObject(Map.class, map, key.BUKKIT, true);
if (ench == null) {
return null;
}
- Map<Enchantment, Integer> enchantments = new HashMap<Enchantment, Integer>(ench.size());
+ EnchantmentMap enchantments = new EnchantmentMap(); // Paper
for (Map.Entry<?, ?> entry : ench.entrySet()) {
// Doctor older enchants
String enchantKey = entry.getKey().toString();
@@ -716,13 +719,13 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable {
}
public Map<Enchantment, Integer> getEnchants() {
- return hasEnchants() ? ImmutableMap.copyOf(enchantments) : ImmutableMap.<Enchantment, Integer>of();
+ return hasEnchants() ? ImmutableSortedMap.copyOfSorted(enchantments) : ImmutableMap.<Enchantment, Integer>of(); // Paper
}
public boolean addEnchant(Enchantment ench, int level, boolean ignoreRestrictions) {
Validate.notNull(ench, "Enchantment cannot be null");
if (enchantments == null) {
- enchantments = new HashMap<Enchantment, Integer>(4);
+ enchantments = new EnchantmentMap(); // Paper
}
if (ignoreRestrictions || level >= ench.getStartLevel() && level <= ench.getMaxLevel()) {
@@ -1042,7 +1045,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable {
clone.lore = new ArrayList<String>(this.lore);
}
if (this.enchantments != null) {
- clone.enchantments = new HashMap<Enchantment, Integer>(this.enchantments);
+ clone.enchantments = new EnchantmentMap(this.enchantments); // Paper
}
if (this.hasAttributeModifiers()) {
clone.attributeModifiers = HashMultimap.create(this.attributeModifiers);
@@ -1243,6 +1246,23 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable {
}
}
+ // Paper start
+ private static class EnchantmentMap extends TreeMap<Enchantment, Integer> {
+ private EnchantmentMap(Map<Enchantment, Integer> enchantments) {
+ this();
+ putAll(enchantments);
+ }
+
+ private EnchantmentMap() {
+ super(Comparator.comparing(o -> o.getKey().toString()));
+ }
+
+ public EnchantmentMap clone() {
+ return (EnchantmentMap) super.clone();
+ }
+ }
+ // Paper end
+
// Spigot start
private final Spigot spigot = new Spigot()
{
--
2.19.0
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