Paper/patches/server/0820-Sync-offhand-slot-in-menus.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191)
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

52 lines
3.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Fri, 14 Jan 2022 10:20:40 -0800
Subject: [PATCH] Sync offhand slot in menus
Menus don't add slots for the offhand, so on sendAllDataToRemote calls the
offhand slot isn't sent. This is not correct because you *can* put stuff into the offhand
by pressing the offhand swap item
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index ecdeaa3f5a793895c3a4584ae7e4594b21087167..d4930c40f03c5f331847bf52736c563a688d7daf 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -299,6 +299,13 @@ public class ServerPlayer extends Player {
}
+ // Paper start - Sync offhand slot in menus
+ @Override
+ public void sendOffHandSlotChange() {
+ ServerPlayer.this.connection.send(new ClientboundContainerSetSlotPacket(ServerPlayer.this.inventoryMenu.containerId, ServerPlayer.this.inventoryMenu.incrementStateId(), net.minecraft.world.inventory.InventoryMenu.SHIELD_SLOT, ServerPlayer.this.inventoryMenu.getSlot(net.minecraft.world.inventory.InventoryMenu.SHIELD_SLOT).getItem().copy()));
+ }
+ // Paper end - Sync offhand slot in menus
+
@Override
public void sendSlotChange(AbstractContainerMenu handler, int slot, ItemStack stack) {
ServerPlayer.this.connection.send(new ClientboundContainerSetSlotPacket(handler.containerId, handler.incrementStateId(), slot, stack));
diff --git a/src/main/java/net/minecraft/world/inventory/AbstractContainerMenu.java b/src/main/java/net/minecraft/world/inventory/AbstractContainerMenu.java
index 399b2f4ddb7e9ef26fbc5e83f3b77c46d3868814..24caa1cf91cd50a5972238119aca1f85ec2b3d2b 100644
--- a/src/main/java/net/minecraft/world/inventory/AbstractContainerMenu.java
+++ b/src/main/java/net/minecraft/world/inventory/AbstractContainerMenu.java
@@ -200,6 +200,7 @@ public abstract class AbstractContainerMenu {
if (this.synchronizer != null) {
this.synchronizer.sendInitialData(this, this.remoteSlots, this.remoteCarried, this.remoteDataSlots.toIntArray());
+ this.synchronizer.sendOffHandSlotChange(); // Paper - Sync offhand slot in menus; update player's offhand since the offhand slot is not added to the slots for menus but can be changed by swapping from a menu slot
}
}
diff --git a/src/main/java/net/minecraft/world/inventory/ContainerSynchronizer.java b/src/main/java/net/minecraft/world/inventory/ContainerSynchronizer.java
index ff4fa86f9408e83e505f7e27692d3423f8570c48..a45ef5fcffc05e4e30801b73e82d29c6dbf5b8fd 100644
--- a/src/main/java/net/minecraft/world/inventory/ContainerSynchronizer.java
+++ b/src/main/java/net/minecraft/world/inventory/ContainerSynchronizer.java
@@ -6,6 +6,7 @@ import net.minecraft.world.item.ItemStack;
public interface ContainerSynchronizer {
void sendInitialData(AbstractContainerMenu handler, NonNullList<ItemStack> stacks, ItemStack cursorStack, int[] properties);
+ default void sendOffHandSlotChange() {} // Paper - Sync offhand slot in menus
void sendSlotChange(AbstractContainerMenu handler, int slot, ItemStack stack);
void sendCarriedChange(AbstractContainerMenu handler, ItemStack stack);