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https://github.com/PaperMC/Paper.git
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1358d1e914
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: 881e06e5 PR-725: Add Item Unlimited Lifetime APIs CraftBukkit Changes: 74c08312 SPIGOT-6962: Call EntityChangeBlockEvent when when FallingBlockEntity starts to fall 64db5126 SPIGOT-6959: Make /loot command ignore empty items for spawn 2d760831 Increase outdated build delay 9ed7e4fb SPIGOT-6138, SPIGOT-6415: Don't call CreatureSpawnEvent after cross-dimensional travel fc4ad813 SPIGOT-6895: Trees grown with applyBoneMeal() don't fire the StructureGrowthEvent 59733a2e SPIGOT-6961: Actually return a copy of the ItemMeta Spigot Changes: ffceeae3 SPIGOT-6956: Drop unload queue patch as attempt at fixing stop issue e19ddabd PR-1011: Add Item Unlimited Lifetime APIs 34d40b0e SPIGOT-2942: give command fires PlayerDropItemEvent, cancelling it causes Item Duplication
86 lines
4.6 KiB
Diff
86 lines
4.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Nassim Jahnke <jahnke.nassim@gmail.com>
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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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diff --git a/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java b/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
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index 3eb6bf4258b1de4697f96c2011df493cf7414a0c..bbf4e6b0ca0fe046469c675fc9e0929b64006548 100644
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--- a/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
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+++ b/src/main/java/net/minecraft/network/syncher/EntityDataSerializers.java
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@@ -127,7 +127,7 @@ public class EntityDataSerializers {
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public static final EntityDataSerializer<ItemStack> ITEM_STACK = new EntityDataSerializer<ItemStack>() {
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@Override
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public void write(FriendlyByteBuf buf, ItemStack value) {
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- buf.writeItem(value);
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+ buf.writeItem(net.minecraft.world.entity.LivingEntity.sanitizeItemStack(value, false)); // Paper - prevent oversized data
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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 9760ff4b6ca0e555f01151968cbfe0cdb8960e35..7464336f0c7ee59e59552afbad7bed0afcecef87 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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@@ -319,7 +319,10 @@ public class ServerEntity {
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ItemStack itemstack = ((LivingEntity) this.entity).getItemBySlot(enumitemslot);
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if (!itemstack.isEmpty()) {
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- list.add(Pair.of(enumitemslot, itemstack.copy()));
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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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+ // Paper end
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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 4240d5bcb550c591706d978ddabffd79104faa37..626e53564d4130b98440982e174fd7c23b7df863 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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@@ -3077,7 +3077,10 @@ public abstract class LivingEntity extends Entity {
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equipmentChanges.forEach((enumitemslot, itemstack) -> {
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ItemStack itemstack1 = itemstack.copy();
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- list.add(Pair.of(enumitemslot, itemstack1));
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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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+ // Paper end
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switch (enumitemslot.getType()) {
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case HAND:
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this.setLastHandItem(enumitemslot, itemstack1);
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@@ -3090,6 +3093,34 @@ public abstract class LivingEntity extends Entity {
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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 - 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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+ 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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+ final CompoundTag tag = copy.getTag();
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+ if (copy.is(Items.BUNDLE) && tag.get("Items") instanceof ListTag oldItems && !oldItems.isEmpty()) {
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+ // Bundles change their texture based on their fullness.
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+ org.bukkit.inventory.meta.BundleMeta bundleMeta = (org.bukkit.inventory.meta.BundleMeta) copy.asBukkitMirror().getItemMeta();
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+ int sizeUsed = 0;
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+ for (org.bukkit.inventory.ItemStack item : bundleMeta.getItems()) {
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+ int scale = 64 / item.getMaxStackSize();
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+ sizeUsed += scale * item.getAmount();
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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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+ ListTag items = new ListTag();
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+ items.add(new ItemStack(Items.PAPER, sizeUsed).save(new CompoundTag()));
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+ tag.put("Items", items);
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+ }
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+ if (tag.get("BlockEntityTag") instanceof CompoundTag blockEntityTag) {
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+ blockEntityTag.remove("Items");
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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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private ItemStack getLastArmorItem(EquipmentSlot slot) {
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return (ItemStack) this.lastArmorItemStacks.get(slot.getIndex());
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}
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