119 Zeilen
7.2 KiB
Diff
119 Zeilen
7.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Noah van der Aa <ndvdaa@gmail.com>
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Date: Tue, 3 Aug 2021 17:28:27 +0200
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Subject: [PATCH] Hide unnecessary itemmeta from clients
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diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
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index 71a8812365503d840f6702a21d504a37d67c7194..63561c0044375465fa0023b2b563a6516d7fa76c 100644
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--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
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+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
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@@ -340,7 +340,7 @@ public class ServerEntity {
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if (!itemstack.isEmpty()) {
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// Paper start - prevent oversized data
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final ItemStack sanitized = LivingEntity.sanitizeItemStack(itemstack.copy(), false);
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- list.add(Pair.of(enumitemslot, sanitized));
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+ list.add(Pair.of(enumitemslot, ((LivingEntity) this.entity).stripMeta(sanitized, false))); // Paper - remove unnecessary item meta
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// Paper end
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}
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}
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diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index 9ae8bdc5d17f585257f61f3692117e82e718b6f4..a47e05e1955b7c0b11fa0c36b5a97d27be0f7e1d 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -2708,8 +2708,8 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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// Refresh the current entity metadata
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entity.getEntityData().refresh(player);
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// SPIGOT-7136 - Allays
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- if (entity instanceof Allay) {
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- 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())));
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+ if (entity instanceof Allay allay) { // Paper
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+ 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
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player.containerMenu.sendAllDataToRemote();
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}
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}
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diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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index 3161b5da8bd4045123ee067ffc693165507a02ea..5287ff8b30a6d27ca05241695a6c99e868a5aa36 100644
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--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
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+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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@@ -3169,7 +3169,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
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// Paper start - prevent oversized data
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ItemStack toSend = sanitizeItemStack(itemstack1, true);
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- list.add(Pair.of(enumitemslot, toSend));
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+ list.add(Pair.of(enumitemslot, stripMeta(toSend, toSend == itemstack1))); // Paper - hide unnecessary item meta
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// Paper end
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switch (enumitemslot.getType()) {
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case HAND:
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@@ -3183,6 +3183,70 @@ public abstract class LivingEntity extends Entity implements Attackable {
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((ServerLevel) this.level()).getChunkSource().broadcast(this, new ClientboundSetEquipmentPacket(this.getId(), list));
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}
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+ // Paper start - hide unnecessary item meta
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+ public ItemStack stripMeta(final ItemStack itemStack, final boolean copyItemStack) {
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+ if (itemStack.isEmpty() || (!itemStack.hasTag() && itemStack.getCount() < 2)) {
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+ return itemStack;
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+ }
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+
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+ final ItemStack copy = copyItemStack ? itemStack.copy() : itemStack;
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+ if (this.level().paperConfig().anticheat.obfuscation.items.hideDurability) {
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+ // Only show damage values for elytra's, since they show a different texture when broken.
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+ if (!copy.is(Items.ELYTRA) || copy.getDamageValue() < copy.getMaxDamage() - 1) {
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+ copy.setDamageValue(0);
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+ }
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+ }
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+
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+ final CompoundTag tag = copy.getTag();
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+ if (this.level().paperConfig().anticheat.obfuscation.items.hideItemmeta) {
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+ // Some resource packs show different textures when there is more than one item. Since this shouldn't provide a big advantage,
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+ // we'll tell the client if there's one or (more than) two items.
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+ copy.setCount(copy.getCount() > 1 ? 2 : 1);
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+ // We can't just strip out display, leather helmets still use the display.color tag.
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+ if (tag != null) {
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+ if (tag.get("display") instanceof CompoundTag displayTag) {
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+ displayTag.remove("Lore");
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+ displayTag.remove("Name");
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+ }
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+
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+ if (tag.get("Enchantments") instanceof ListTag enchantmentsTag && !enchantmentsTag.isEmpty()) {
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+ // The client still renders items with the enchantment glow if the enchantments tag contains at least one (empty) child.
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+ ListTag enchantments = new ListTag();
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+ CompoundTag fakeEnchantment = new CompoundTag();
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+ // Soul speed boots generate client side particles.
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+ if (EnchantmentHelper.getItemEnchantmentLevel(Enchantments.SOUL_SPEED, itemStack) > 0) {
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+ fakeEnchantment.putString("id", org.bukkit.enchantments.Enchantment.SOUL_SPEED.getKey().asString());
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+ fakeEnchantment.putInt("lvl", 1);
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+ }
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+ enchantments.add(fakeEnchantment);
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+ tag.put("Enchantments", enchantments);
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+ }
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+ tag.remove("AttributeModifiers");
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+
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+ // Books
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+ tag.remove("author");
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+ tag.remove("filtered_title");
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+ tag.remove("pages");
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+ tag.remove("filtered_pages");
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+ tag.remove("title");
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+ tag.remove("generation");
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+ }
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+ }
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+
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+ if (this.level().paperConfig().anticheat.obfuscation.items.hideItemmetaWithVisualEffects && tag != null) {
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+ // Lodestone compasses
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+ tag.remove("LodestonePos");
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+ if (tag.contains("LodestoneDimension")) {
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+ // The client shows the glint if either the position or the dimension is present, so we just wipe
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+ // the position and fake the dimension
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+ tag.putString("LodestoneDimension", "paper:paper");
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+ }
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+ }
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+
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+ return copy;
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+ }
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+ // Paper end
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+
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// Paper start - prevent oversized data
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public static ItemStack sanitizeItemStack(final ItemStack itemStack, final boolean copyItemStack) {
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if (itemStack.isEmpty() || !itemStack.hasTag()) {
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