mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-27 01:29:32 +01:00
526795bacd
* Update patches to handle vineflower decompiler * update patches again to handle inlined simple lambdas * update vf again and re-apply/rebuild patches * update patches after removal of verify-merges flag * fix compile issue * remove maven local * fix some issues * address more issues * fix collision patch * use paperweight release * more fixes * update fineflower and fix patches again * add missing comment descriptor --------- Co-authored-by: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
86 lines
4.7 KiB
Diff
86 lines
4.7 KiB
Diff
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
|
|
|
|
|
|
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());
|
|
}
|