Paper/patches/server/0733-Hide-unnecessary-itemmeta-from-clients.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Noah van der Aa <ndvdaa@gmail.com>
Date: Tue, 3 Aug 2021 17:28:27 +0200
Subject: [PATCH] Hide unnecessary itemmeta from clients
diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
Updated Upstream (Bukkit/CraftBukkit) (#9485) Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 82af5dc6 SPIGOT-7396: Add PlayerSignOpenEvent 3f0281ca SPIGOT-7063, PR-763: Add DragonBattle#initiateRespawn with custom EnderCrystals f83c8df4 PR-873: Add PlayerRecipeBookClickEvent 14560d39 SPIGOT-7435: Add TeleportCause#EXIT_BED 2cc6db92 SPIGOT-7422, PR-887: Add API to set sherds on decorated pots 36022f02 PR-883: Add ItemFactory#getSpawnEgg 12eb5c46 PR-881: Update Scoreboard Javadocs, remove explicit exception throwing f6d8d44a PR-882: Add modern time API methods to ban API 21a7b710 Upgrade some Maven plugins to reduce warnings 11fd1225 PR-886: Deprecate the SmithingRecipe constructor as it now does nothing dbd1761d SPIGOT-7406: Improve documentation for getDragonBattle CraftBukkit Changes: d548daac2 SPIGOT-7446: BlockState#update not updating a spawner's type to null 70e0bc050 SPIGOT-7447: Fix --forceUpgrade 6752f1d63 SPIGOT-7396: Add PlayerSignOpenEvent 847b4cad5 SPIGOT-7063, PR-1071: Add DragonBattle#initiateRespawn with custom EnderCrystals c335a555f PR-1212: Add PlayerRecipeBookClickEvent 4be756ecb SPIGOT-7445: Fix opening smithing inventory db70bd6ed SPIGOT-7441: Fix issue placing certain items in creative/op f7fa6d993 SPIGOT-7435: Add TeleportCause#EXIT_BED b435e8e8d SPIGOT-7349: Player#setDisplayName not working when message/format unmodified a2fafdd1d PR-1232: Re-add fix for player rotation 7cf863de1 PR-1233: Remove some old MC bug fixes now fixed in vanilla 08ec344ad Fix ChunkGenerator#generateCaves never being called 5daeb502a SPIGOT-7422, PR-1228: Add API to set sherds on decorated pots 52faa6b32 PR-1224: Add ItemFactory#getSpawnEgg 01cae71b7 SPIGOT-7429: Fix LEFT_CLICK_AIR not working for passable entities and spectators a94277a18 PR-1223: Remove non-existent scoreboard display name/prefix/suffix limits 36b107660 PR-1225: Add modern time API methods to ban API 59ead25bc Upgrade some Maven plugins to reduce warnings 202fc5c4e Increase outdated build delay ce545de57 SPIGOT-7398: TextDisplay#setInterpolationDuration incorrectly updates the line width Spigot Changes: b41c46db Rebuild patches 3374045a SPIGOT-7431: Fix EntityMountEvent returning opposite entities 0ca4eb66 Rebuild patches
2023-08-06 02:21:59 +02:00
index 24f0d61a2fa9ac95dd26443a978209b53baf10b1..31fa0f4fbf195d0db7a89a060b1cc4fd30dc5ab0 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
2023-06-08 09:20:03 +02:00
@@ -340,7 +340,7 @@ public class ServerEntity {
if (!itemstack.isEmpty()) {
// Paper start - prevent oversized data
final ItemStack sanitized = LivingEntity.sanitizeItemStack(itemstack.copy(), false);
- list.add(Pair.of(enumitemslot, sanitized));
+ list.add(Pair.of(enumitemslot, ((LivingEntity) this.entity).stripMeta(sanitized, false))); // Paper - remove unnecessary item meta
// Paper end
}
}
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 31c8b483006febd23363f7bcc2c09bde37b84847..81750c1551a69d1c77ab8c34437e5d839b7e2941 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2693,8 +2693,8 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
2022-12-07 22:35:34 +01:00
// Refresh the current entity metadata
entity.getEntityData().refresh(player);
// SPIGOT-7136 - Allays
- if (entity instanceof Allay) {
- ServerGamePacketListenerImpl.this.send(new ClientboundSetEquipmentPacket(entity.getId(), Arrays.stream(net.minecraft.world.entity.EquipmentSlot.values()).map((slot) -> Pair.of(slot, ((LivingEntity) entity).getItemBySlot(slot).copy())).collect(Collectors.toList())));
+ if (entity instanceof Allay allay) { // Paper
+ ServerGamePacketListenerImpl.this.send(new ClientboundSetEquipmentPacket(entity.getId(), Arrays.stream(net.minecraft.world.entity.EquipmentSlot.values()).map((slot) -> Pair.of(slot, allay.stripMeta(allay.getItemBySlot(slot), true))).collect(Collectors.toList()))); // Paper - remove unnecessary item meta
player.containerMenu.sendAllDataToRemote();
}
}
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index de69507b71c79172f0581aa58a7ac7e9a002444f..a35e59544786776391ba135f247ac1a28be3d754 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#9440) Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 01aa02eb PR-858: Add LivingEntity#playHurtAnimation() 9421320f PR-884: Refinements to new ban API for improved compatibility and correctness 37a60b45 SPIGOT-6455, SPIGOT-7030, PR-750: Improve ban API 4eeb174b All smithing inventories are now the new smithing inventory f2bb168e PR-880: Add methods to get/set FallingBlock CancelDrop e7a807fa PR-879: Add Player#sendHealthUpdate() 692b8e96 SPIGOT-7370: Remove float value conversion in plugin.yml 2d033390 SPIGOT-7403: Add direct API for waxed signs 16a08373 PR-876: Add missing Raider API and 'no action ticks' CraftBukkit Changes: b60a95c8c PR-1189: Add LivingEntity#playHurtAnimation() 95c335c63 PR-1226: Fix VehicleEnterEvent not being called for certain entities 0a0fc3bee PR-1227: Refinements to new ban API for improved compatibility and correctness 0d0b1e5dc Revert bad change to PathfinderGoalSit causing all cats to sit 648196070 SPIGOT-6455, SPIGOT-7030, PR-1054: Improve ban API 31fe848d6 All smithing inventories are now the new smithing inventory 9a919a143 SPIGOT-7416: SmithItemEvent not firing in Smithing Table 9f64f0d22 PR-1221: Add methods to get/set FallingBlock CancelDrop 3be9ac171 PR-1220: Add Player#sendHealthUpdate() c1279f775 PR-1209: Clean up various patches c432e4397 Fix Raider#setCelebrating() implementation 504d96665 SPIGOT-7403: Add direct API for waxed signs c68c1f1b3 PR-1216: Add missing Raider API and 'no action ticks' 85b89c3dd Increase outdated build delay Spigot Changes: 9ebce8af Rebuild patches 64b565e6 Rebuild patches
2023-07-04 10:22:56 +02:00
@@ -3159,7 +3159,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
// Paper start - prevent oversized data
ItemStack toSend = sanitizeItemStack(itemstack1, true);
- list.add(Pair.of(enumitemslot, toSend));
+ list.add(Pair.of(enumitemslot, stripMeta(toSend, toSend == itemstack1))); // Paper - hide unnecessary item meta
// Paper end
switch (enumitemslot.getType()) {
case HAND:
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#9440) Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 01aa02eb PR-858: Add LivingEntity#playHurtAnimation() 9421320f PR-884: Refinements to new ban API for improved compatibility and correctness 37a60b45 SPIGOT-6455, SPIGOT-7030, PR-750: Improve ban API 4eeb174b All smithing inventories are now the new smithing inventory f2bb168e PR-880: Add methods to get/set FallingBlock CancelDrop e7a807fa PR-879: Add Player#sendHealthUpdate() 692b8e96 SPIGOT-7370: Remove float value conversion in plugin.yml 2d033390 SPIGOT-7403: Add direct API for waxed signs 16a08373 PR-876: Add missing Raider API and 'no action ticks' CraftBukkit Changes: b60a95c8c PR-1189: Add LivingEntity#playHurtAnimation() 95c335c63 PR-1226: Fix VehicleEnterEvent not being called for certain entities 0a0fc3bee PR-1227: Refinements to new ban API for improved compatibility and correctness 0d0b1e5dc Revert bad change to PathfinderGoalSit causing all cats to sit 648196070 SPIGOT-6455, SPIGOT-7030, PR-1054: Improve ban API 31fe848d6 All smithing inventories are now the new smithing inventory 9a919a143 SPIGOT-7416: SmithItemEvent not firing in Smithing Table 9f64f0d22 PR-1221: Add methods to get/set FallingBlock CancelDrop 3be9ac171 PR-1220: Add Player#sendHealthUpdate() c1279f775 PR-1209: Clean up various patches c432e4397 Fix Raider#setCelebrating() implementation 504d96665 SPIGOT-7403: Add direct API for waxed signs c68c1f1b3 PR-1216: Add missing Raider API and 'no action ticks' 85b89c3dd Increase outdated build delay Spigot Changes: 9ebce8af Rebuild patches 64b565e6 Rebuild patches
2023-07-04 10:22:56 +02:00
@@ -3173,6 +3173,70 @@ public abstract class LivingEntity extends Entity implements Attackable {
2023-06-08 09:20:03 +02:00
((ServerLevel) this.level()).getChunkSource().broadcast(this, new ClientboundSetEquipmentPacket(this.getId(), list));
}
+ // Paper start - hide unnecessary item meta
+ public ItemStack stripMeta(final ItemStack itemStack, final boolean copyItemStack) {
+ if (itemStack.isEmpty() || (!itemStack.hasTag() && itemStack.getCount() < 2)) {
+ return itemStack;
+ }
+
+ final ItemStack copy = copyItemStack ? itemStack.copy() : itemStack;
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+ if (this.level().paperConfig().anticheat.obfuscation.items.hideDurability) {
+ // Only show damage values for elytra's, since they show a different texture when broken.
+ if (!copy.is(Items.ELYTRA) || copy.getDamageValue() < copy.getMaxDamage() - 1) {
+ copy.setDamageValue(0);
+ }
+ }
+
+ final CompoundTag tag = copy.getTag();
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+ if (this.level().paperConfig().anticheat.obfuscation.items.hideItemmeta) {
+ // Some resource packs show different textures when there is more than one item. Since this shouldn't provide a big advantage,
+ // we'll tell the client if there's one or (more than) two items.
+ copy.setCount(copy.getCount() > 1 ? 2 : 1);
+ // We can't just strip out display, leather helmets still use the display.color tag.
+ if (tag != null) {
+ if (tag.get("display") instanceof CompoundTag displayTag) {
+ displayTag.remove("Lore");
+ displayTag.remove("Name");
+ }
+
+ if (tag.get("Enchantments") instanceof ListTag enchantmentsTag && !enchantmentsTag.isEmpty()) {
+ // The client still renders items with the enchantment glow if the enchantments tag contains at least one (empty) child.
+ ListTag enchantments = new ListTag();
+ CompoundTag fakeEnchantment = new CompoundTag();
+ // Soul speed boots generate client side particles.
+ if (EnchantmentHelper.getItemEnchantmentLevel(Enchantments.SOUL_SPEED, itemStack) > 0) {
+ fakeEnchantment.putString("id", org.bukkit.enchantments.Enchantment.SOUL_SPEED.getKey().asString());
+ fakeEnchantment.putInt("lvl", 1);
+ }
+ enchantments.add(fakeEnchantment);
+ tag.put("Enchantments", enchantments);
+ }
+ tag.remove("AttributeModifiers");
+
+ // Books
+ tag.remove("author");
+ tag.remove("filtered_title");
+ tag.remove("pages");
+ tag.remove("filtered_pages");
+ tag.remove("title");
+ tag.remove("generation");
+ }
+ }
+
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+ if (this.level().paperConfig().anticheat.obfuscation.items.hideItemmetaWithVisualEffects && tag != null) {
+ // Lodestone compasses
+ tag.remove("LodestonePos");
+ if (tag.contains("LodestoneDimension")) {
+ // The client shows the glint if either the position or the dimension is present, so we just wipe
+ // the position and fake the dimension
+ tag.putString("LodestoneDimension", "paper:paper");
+ }
+ }
+
+ return copy;
+ }
+ // Paper end
+
// Paper start - prevent oversized data
public static ItemStack sanitizeItemStack(final ItemStack itemStack, final boolean copyItemStack) {
if (itemStack.isEmpty() || !itemStack.hasTag()) {