From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Nassim Jahnke Date: Mon, 11 Sep 2023 12:01:57 +1000 Subject: [PATCH] Add slot sanity checks in container clicks diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java index 236ab643cdd65b3572860aedf1f5ac18ff96139a..65bb221993147a558995b36fb835f7b82e0eb4bd 100644 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java @@ -2981,6 +2981,12 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl break; case SWAP: if ((packet.getButtonNum() >= 0 && packet.getButtonNum() < 9) || packet.getButtonNum() == 40) { + // Paper start + if (packet.getSlotNum() < 0) { + action = InventoryAction.NOTHING; + break; + } + // Paper end click = (packet.getButtonNum() == 40) ? ClickType.SWAP_OFFHAND : ClickType.NUMBER_KEY; Slot clickedSlot = this.player.containerMenu.getSlot(packet.getSlotNum()); if (clickedSlot.mayPickup(this.player)) { diff --git a/src/main/java/net/minecraft/world/inventory/AbstractContainerMenu.java b/src/main/java/net/minecraft/world/inventory/AbstractContainerMenu.java index 3ef712299fe248602b0b117c0a8e285cdf4e05c2..5d298b11f74cd2da47e6613ced621ab62aa73a7b 100644 --- a/src/main/java/net/minecraft/world/inventory/AbstractContainerMenu.java +++ b/src/main/java/net/minecraft/world/inventory/AbstractContainerMenu.java @@ -423,6 +423,7 @@ public abstract class AbstractContainerMenu { this.resetQuickCraft(); } } else if (this.quickcraftStatus == 1) { + if (slotIndex < 0) return; // Paper slot = (Slot) this.slots.get(slotIndex); itemstack = this.getCarried(); if (AbstractContainerMenu.canItemQuickReplace(slot, itemstack, true) && slot.mayPlace(itemstack) && (this.quickcraftType == 2 || itemstack.getCount() > this.quickcraftSlots.size()) && this.canDragTo(slot)) { @@ -598,6 +599,7 @@ public abstract class AbstractContainerMenu { int j2; if (actionType == ClickType.SWAP) { + if (slotIndex < 0 || button < 0) return; // Paper slot2 = (Slot) this.slots.get(slotIndex); itemstack1 = playerinventory.getItem(button); itemstack = slot2.getItem();