Mirror von
https://github.com/PaperMC/Paper.git
synchronisiert 2024-11-15 04:20:04 +01:00
readd itemstack data sanitization (#10454)
* readd itemstack data sanitization * use autocloseable
Dieser Commit ist enthalten in:
Jake Potrebic
GitHub
Ursprung
4e10fadfdc
Commit
a7ae966530
@ -0,0 +1,228 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Nassim Jahnke <nassim@njahnke.dev>
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Date: Wed, 1 Dec 2021 12:36:25 +0100
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Subject: [PATCH] Prevent sending oversized item data in equipment and metadata
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Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
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diff --git a/src/main/java/io/papermc/paper/util/DataSanitizationUtil.java b/src/main/java/io/papermc/paper/util/DataSanitizationUtil.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..e9436f8a73ee0a02096d66e14d73edaae28d5a41
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--- /dev/null
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+++ b/src/main/java/io/papermc/paper/util/DataSanitizationUtil.java
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@@ -0,0 +1,100 @@
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+package io.papermc.paper.util;
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+
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+import java.util.ArrayList;
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+import java.util.List;
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+import java.util.concurrent.atomic.AtomicBoolean;
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+import java.util.function.UnaryOperator;
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+import net.minecraft.network.RegistryFriendlyByteBuf;
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+import net.minecraft.network.codec.StreamCodec;
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+import net.minecraft.world.item.ItemStack;
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+import net.minecraft.world.item.Items;
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+import net.minecraft.world.item.component.BundleContents;
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+import net.minecraft.world.item.component.ChargedProjectiles;
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+import net.minecraft.world.item.component.ItemContainerContents;
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+import org.checkerframework.checker.nullness.qual.NonNull;
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+import org.checkerframework.framework.qual.DefaultQualifier;
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+
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+@DefaultQualifier(NonNull.class)
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+public final class DataSanitizationUtil {
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+
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+ private static final ThreadLocal<DataSanitizer> DATA_SANITIZER = ThreadLocal.withInitial(DataSanitizer::new);
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+
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+ public static DataSanitizer start(final boolean sanitize) {
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+ final DataSanitizer sanitizer = DATA_SANITIZER.get();
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+ if (sanitize) {
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+ sanitizer.start();
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+ }
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+ return sanitizer;
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+ }
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+
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+ public static final StreamCodec<RegistryFriendlyByteBuf, ChargedProjectiles> CHARGED_PROJECTILES = codec(ChargedProjectiles.STREAM_CODEC, DataSanitizationUtil::sanitizeChargedProjectiles);
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+ public static final StreamCodec<RegistryFriendlyByteBuf, BundleContents> BUNDLE_CONTENTS = codec(BundleContents.STREAM_CODEC, DataSanitizationUtil::sanitizeBundleContents);
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+ public static final StreamCodec<RegistryFriendlyByteBuf, ItemContainerContents> CONTAINER = codec(ItemContainerContents.STREAM_CODEC, contents -> ItemContainerContents.EMPTY);
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+
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+ private static ChargedProjectiles sanitizeChargedProjectiles(final ChargedProjectiles projectiles) {
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+ if (projectiles.isEmpty()) {
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+ return projectiles;
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+ }
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+ final List<ItemStack> items = projectiles.getItems();
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+ final List<ItemStack> sanitized = new ArrayList<>();
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+ for (int i = 0; i < Math.min(items.size(), 3); i++) {
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+ // we want to preserve item type as vanilla client can change visuals based on type
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+ sanitized.add(new ItemStack(items.get(i).getItemHolder()));
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+ }
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+ return ChargedProjectiles.of(sanitized);
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+ }
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+
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+ private static BundleContents sanitizeBundleContents(final BundleContents contents) {
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+ // Bundles change their texture based on their fullness.
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+ int sizeUsed = 0;
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+ for (final ItemStack item : contents.items()) {
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+ final int scale = 64 / item.getMaxStackSize();
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+ sizeUsed += scale * item.getCount();
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+ }
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+ // Now we add a single fake item that uses the same amount of slots as all other items.
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+ final List<ItemStack> items = new ArrayList<>();
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+ items.add(new ItemStack(Items.PAPER, sizeUsed));
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+ return new BundleContents(items);
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+ }
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+
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+ private static <B, A> StreamCodec<B, A> codec(final StreamCodec<B, A> delegate, final UnaryOperator<A> sanitizer) {
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+ return new DataSanitizationCodec<>(delegate, sanitizer);
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+ }
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+
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+ private record DataSanitizationCodec<B, A>(StreamCodec<B, A> delegate, UnaryOperator<A> sanitizer) implements StreamCodec<B, A> {
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+
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+ @Override
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+ public @NonNull A decode(final @NonNull B buf) {
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+ return this.delegate.decode(buf);
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+ }
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+
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+ @Override
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+ public void encode(final @NonNull B buf, final @NonNull A value) {
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+ if (!DATA_SANITIZER.get().value().get()) {
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+ this.delegate.encode(buf, value);
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+ } else {
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+ this.delegate.encode(buf, this.sanitizer.apply(value));
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+ }
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+ }
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+ }
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+
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+ public record DataSanitizer(AtomicBoolean value) implements AutoCloseable {
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+
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+ public DataSanitizer() {
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+ this(new AtomicBoolean(false));
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+ }
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+
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+ public void start() {
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+ this.value.compareAndSet(false, true);
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+ }
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+
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+ @Override
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+ public void close() {
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+ this.value.compareAndSet(true, false);
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+ }
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+ }
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+
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+ private DataSanitizationUtil() {
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+ }
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+
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+}
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diff --git a/src/main/java/net/minecraft/core/component/DataComponents.java b/src/main/java/net/minecraft/core/component/DataComponents.java
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index 5632974af9c603d333ffc30a5a1b1e851821a3bb..9b2a209cda955ef3e5d8ff3ed1b2249888c7d139 100644
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--- a/src/main/java/net/minecraft/core/component/DataComponents.java
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+++ b/src/main/java/net/minecraft/core/component/DataComponents.java
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@@ -139,10 +139,10 @@ public class DataComponents {
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"map_post_processing", builder -> builder.networkSynchronized(MapPostProcessing.STREAM_CODEC)
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);
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public static final DataComponentType<ChargedProjectiles> CHARGED_PROJECTILES = register(
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- "charged_projectiles", builder -> builder.persistent(ChargedProjectiles.CODEC).networkSynchronized(ChargedProjectiles.STREAM_CODEC).cacheEncoding()
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+ "charged_projectiles", builder -> builder.persistent(ChargedProjectiles.CODEC).networkSynchronized(io.papermc.paper.util.DataSanitizationUtil.CHARGED_PROJECTILES).cacheEncoding() // Paper - sanitize charged projectiles
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);
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public static final DataComponentType<BundleContents> BUNDLE_CONTENTS = register(
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- "bundle_contents", builder -> builder.persistent(BundleContents.CODEC).networkSynchronized(BundleContents.STREAM_CODEC).cacheEncoding()
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+ "bundle_contents", builder -> builder.persistent(BundleContents.CODEC).networkSynchronized(io.papermc.paper.util.DataSanitizationUtil.BUNDLE_CONTENTS).cacheEncoding() // Paper - sanitize bundle contents
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);
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public static final DataComponentType<PotionContents> POTION_CONTENTS = register(
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"potion_contents", builder -> builder.persistent(PotionContents.CODEC).networkSynchronized(PotionContents.STREAM_CODEC).cacheEncoding()
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@@ -206,7 +206,7 @@ public class DataComponents {
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"pot_decorations", builder -> builder.persistent(PotDecorations.CODEC).networkSynchronized(PotDecorations.STREAM_CODEC).cacheEncoding()
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);
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public static final DataComponentType<ItemContainerContents> CONTAINER = register(
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- "container", builder -> builder.persistent(ItemContainerContents.CODEC).networkSynchronized(ItemContainerContents.STREAM_CODEC).cacheEncoding()
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+ "container", builder -> builder.persistent(ItemContainerContents.CODEC).networkSynchronized(io.papermc.paper.util.DataSanitizationUtil.CONTAINER).cacheEncoding() // Paper - sanitize container contents
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);
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public static final DataComponentType<BlockItemStateProperties> BLOCK_STATE = register(
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"block_state", builder -> builder.persistent(BlockItemStateProperties.CODEC).networkSynchronized(BlockItemStateProperties.STREAM_CODEC).cacheEncoding()
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diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEntityDataPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEntityDataPacket.java
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index 59c1c103545f04fd35e6932df64a9910a1d74cd7..56bde49e6b7790155b032d0be40961d566ab89e9 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEntityDataPacket.java
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+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEntityDataPacket.java
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@@ -19,9 +19,11 @@ public record ClientboundSetEntityDataPacket(int id, List<SynchedEntityData.Data
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}
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private static void pack(List<SynchedEntityData.DataValue<?>> trackedValues, RegistryFriendlyByteBuf buf) {
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+ try (var ignored = io.papermc.paper.util.DataSanitizationUtil.start(true)) { // Paper - data sanitization
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for (SynchedEntityData.DataValue<?> dataValue : trackedValues) {
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dataValue.write(buf);
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}
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+ } // Paper - data sanitization
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buf.writeByte(255);
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}
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diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEquipmentPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEquipmentPacket.java
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index e092a486c4041ab1cfe9e29c88d0d94528a6e9a6..3945ca04ede578121b370592482ac917f2d4cf96 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEquipmentPacket.java
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+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEquipmentPacket.java
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@@ -19,6 +19,13 @@ public class ClientboundSetEquipmentPacket implements Packet<ClientGamePacketLis
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private final List<Pair<EquipmentSlot, ItemStack>> slots;
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public ClientboundSetEquipmentPacket(int id, List<Pair<EquipmentSlot, ItemStack>> equipmentList) {
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+ // Paper start - data sanitization
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+ this(id, equipmentList, false);
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+ }
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+ private boolean sanitize = false;
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+ public ClientboundSetEquipmentPacket(int id, List<Pair<EquipmentSlot, ItemStack>> equipmentList, boolean sanitize) {
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+ this.sanitize = sanitize;
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+ // Paper end - data sanitization
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this.entity = id;
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this.slots = equipmentList;
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}
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@@ -41,6 +48,7 @@ public class ClientboundSetEquipmentPacket implements Packet<ClientGamePacketLis
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buf.writeVarInt(this.entity);
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int i = this.slots.size();
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+ try (var ignored = io.papermc.paper.util.DataSanitizationUtil.start(this.sanitize)) { // Paper - data sanitization
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for (int j = 0; j < i; j++) {
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Pair<EquipmentSlot, ItemStack> pair = this.slots.get(j);
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EquipmentSlot equipmentSlot = pair.getFirst();
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@@ -49,6 +57,7 @@ public class ClientboundSetEquipmentPacket implements Packet<ClientGamePacketLis
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buf.writeByte(bl ? k | -128 : k);
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ItemStack.OPTIONAL_STREAM_CODEC.encode(buf, pair.getSecond());
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}
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+ } // Paper - data sanitization
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}
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@Override
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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 f16a69775332a08ed0e87d27acd0fc959359694c..a2279262c93408c11f5d2290b48fd794975e8cfe 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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@@ -361,7 +361,7 @@ public class ServerEntity {
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}
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if (!list.isEmpty()) {
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- sender.accept(new ClientboundSetEquipmentPacket(this.entity.getId(), list));
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+ sender.accept(new ClientboundSetEquipmentPacket(this.entity.getId(), list, true)); // Paper - data sanitization
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}
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((LivingEntity) this.entity).detectEquipmentUpdatesPublic(); // CraftBukkit - SPIGOT-3789: sync again immediately after sending
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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 b9b3277c8ed94e0cd30b20b9c00a33eaad48e5ac..c450447585af4c8cdc87abe871c229ff895c3e53 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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@@ -2788,7 +2788,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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entity.refreshEntityData(ServerGamePacketListenerImpl.this.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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+ 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()), true)); // Paper - sanitize
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|
ServerGamePacketListenerImpl.this.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 ef0f118aecf0893e45cb9423a677d7e42496324b..2c2aefa1d57a939c3ac6c3d6f3a22de848cabf14 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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|
@@ -3318,7 +3318,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
|
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|
}
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|
|
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|
});
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- ((ServerLevel) this.level()).getChunkSource().broadcast(this, new ClientboundSetEquipmentPacket(this.getId(), list));
|
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|
+ ((ServerLevel) this.level()).getChunkSource().broadcast(this, new ClientboundSetEquipmentPacket(this.getId(), list, true)); // Paper - data sanitization
|
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|
}
|
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|
|
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|
private ItemStack getLastArmorItem(EquipmentSlot slot) {
|
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@ -1,88 +0,0 @@
|
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
||||||
From: Nassim Jahnke <nassim@njahnke.dev>
|
|
||||||
Date: Wed, 1 Dec 2021 12:36:25 +0100
|
|
||||||
Subject: [PATCH] Prevent sending oversized item data in equipment and metadata
|
|
||||||
|
|
||||||
TODO: Check if still needed with compacted items over the network and limits
|
|
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|
|
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|
|
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diff --git a/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java b/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
|
|
||||||
index 3ee4c01e4505241e575b8b2e96338ba27b793a2b..d70f77e4d5ca59c9f802ecb354fa8d53d1e10134 100644
|
|
||||||
--- a/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
|
|
||||||
+++ b/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
|
|
||||||
@@ -44,7 +44,7 @@ public class EntityDataSerializers {
|
|
||||||
public static final EntityDataSerializer<ItemStack> ITEM_STACK = new EntityDataSerializer<ItemStack>() {
|
|
||||||
@Override
|
|
||||||
public void write(FriendlyByteBuf buf, ItemStack value) {
|
|
||||||
- buf.writeItem(value);
|
|
||||||
+ buf.writeItem(net.minecraft.world.entity.LivingEntity.sanitizeItemStack(value, true)); // Paper - prevent oversized data
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
|
|
||||||
index 91563f903834c1a0636dc087f8c6376815165b6c..a51564e8dce3c125ed5f05cc23548a05c1e79a95 100644
|
|
||||||
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
|
|
||||||
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
|
|
||||||
@@ -335,7 +335,10 @@ public class ServerEntity {
|
|
||||||
ItemStack itemstack = ((LivingEntity) this.entity).getItemBySlot(enumitemslot);
|
|
||||||
|
|
||||||
if (!itemstack.isEmpty()) {
|
|
||||||
- list.add(Pair.of(enumitemslot, itemstack.copy()));
|
|
||||||
+ // Paper start - prevent oversized data
|
|
||||||
+ final ItemStack sanitized = LivingEntity.sanitizeItemStack(itemstack.copy(), false);
|
|
||||||
+ list.add(Pair.of(enumitemslot, sanitized));
|
|
||||||
+ // Paper end - prevent oversized data
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
|
||||||
index ed6fd20ff608e764d6b0f517f6c9c85c533f1646..8025e351fb3e24aa67b31eca74be1bc368592851 100644
|
|
||||||
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
|
||||||
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
|
|
||||||
@@ -3208,7 +3208,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
|
|
||||||
equipmentChanges.forEach((enumitemslot, itemstack) -> {
|
|
||||||
ItemStack itemstack1 = itemstack.copy();
|
|
||||||
|
|
||||||
- list.add(Pair.of(enumitemslot, itemstack1));
|
|
||||||
+ // Paper start - prevent oversized data
|
|
||||||
+ ItemStack toSend = sanitizeItemStack(itemstack1, true);
|
|
||||||
+ list.add(Pair.of(enumitemslot, toSend));
|
|
||||||
+ // Paper end - prevent oversized data
|
|
||||||
switch (enumitemslot.getType()) {
|
|
||||||
case HAND:
|
|
||||||
this.setLastHandItem(enumitemslot, itemstack1);
|
|
||||||
@@ -3221,6 +3224,34 @@ public abstract class LivingEntity extends Entity implements Attackable {
|
|
||||||
((ServerLevel) this.level()).getChunkSource().broadcast(this, new ClientboundSetEquipmentPacket(this.getId(), list));
|
|
||||||
}
|
|
||||||
|
|
||||||
+ // Paper start - prevent oversized data
|
|
||||||
+ public static ItemStack sanitizeItemStack(final ItemStack itemStack, final boolean copyItemStack) {
|
|
||||||
+ if (itemStack.isEmpty() || !itemStack.hasTag()) {
|
|
||||||
+ return itemStack;
|
|
||||||
+ }
|
|
||||||
+
|
|
||||||
+ final ItemStack copy = copyItemStack ? itemStack.copy() : itemStack;
|
|
||||||
+ final CompoundTag tag = copy.getTag();
|
|
||||||
+ if (copy.is(Items.BUNDLE) && tag.get("Items") instanceof ListTag oldItems && !oldItems.isEmpty()) {
|
|
||||||
+ // Bundles change their texture based on their fullness.
|
|
||||||
+ org.bukkit.inventory.meta.BundleMeta bundleMeta = (org.bukkit.inventory.meta.BundleMeta) copy.asBukkitMirror().getItemMeta();
|
|
||||||
+ int sizeUsed = 0;
|
|
||||||
+ for (org.bukkit.inventory.ItemStack item : bundleMeta.getItems()) {
|
|
||||||
+ int scale = 64 / item.getMaxStackSize();
|
|
||||||
+ sizeUsed += scale * item.getAmount();
|
|
||||||
+ }
|
|
||||||
+ // Now we add a single fake item that uses the same amount of slots as all other items.
|
|
||||||
+ ListTag items = new ListTag();
|
|
||||||
+ items.add(new ItemStack(Items.PAPER, sizeUsed).save(new CompoundTag()));
|
|
||||||
+ tag.put("Items", items);
|
|
||||||
+ }
|
|
||||||
+ if (tag.get("BlockEntityTag") instanceof CompoundTag blockEntityTag) {
|
|
||||||
+ blockEntityTag.remove("Items");
|
|
||||||
+ }
|
|
||||||
+ return copy;
|
|
||||||
+ }
|
|
||||||
+ // Paper end - prevent oversized data
|
|
||||||
+
|
|
||||||
private ItemStack getLastArmorItem(EquipmentSlot slot) {
|
|
||||||
return (ItemStack) this.lastArmorItemStacks.get(slot.getIndex());
|
|
||||||
}
|
|
||||||
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