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-rw-r--r--patches/server/0901-Add-slot-sanity-checks-in-container-clicks.patch56
1 files changed, 56 insertions, 0 deletions
diff --git a/patches/server/0901-Add-slot-sanity-checks-in-container-clicks.patch b/patches/server/0901-Add-slot-sanity-checks-in-container-clicks.patch
new file mode 100644
index 0000000000..b049da07fe
--- /dev/null
+++ b/patches/server/0901-Add-slot-sanity-checks-in-container-clicks.patch
@@ -0,0 +1,56 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Nassim Jahnke <[email protected]>
+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/core/component/DataComponentPatch.java b/src/main/java/net/minecraft/core/component/DataComponentPatch.java
+index 2a00a2c8102a4a88edcfc8c680c3711efeb75b4a..33340e8ebe23a1a9ce587be34551fb929c41d0fd 100644
+--- a/src/main/java/net/minecraft/core/component/DataComponentPatch.java
++++ b/src/main/java/net/minecraft/core/component/DataComponentPatch.java
+@@ -71,7 +71,7 @@ public final class DataComponentPatch {
+ if (i == 0 && j == 0) {
+ return DataComponentPatch.EMPTY;
+ } else {
+- Reference2ObjectMap<DataComponentType<?>, Optional<?>> reference2objectmap = new Reference2ObjectArrayMap(i + j);
++ Reference2ObjectMap<DataComponentType<?>, Optional<?>> reference2objectmap = new Reference2ObjectArrayMap(Math.min(i + j, 256)); // Paper - sensible initial size limit
+
+ DataComponentType datacomponenttype;
+ int k;
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index 30e0563ba54021bf8f2896bee8060e723ad84d48..e13097ceba283fdf165d7e6327fe78590252fe94 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -2970,6 +2970,12 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
+ break;
+ case SWAP:
+ if ((packet.getButtonNum() >= 0 && packet.getButtonNum() < 9) || packet.getButtonNum() == 40) {
++ // Paper start - Add slot sanity checks to container clicks
++ if (packet.getSlotNum() < 0) {
++ action = InventoryAction.NOTHING;
++ break;
++ }
++ // Paper end - Add slot sanity checks to container clicks
+ 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 85fb19177690ea7235c10f64789066599db08b05..428e454116804c27496cfbf796edd44780890d33 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 - Add slot sanity checks to container clicks
+ 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)) {
+@@ -597,6 +598,7 @@ public abstract class AbstractContainerMenu {
+ int j2;
+
+ if (actionType == ClickType.SWAP && (button >= 0 && button < 9 || button == 40)) {
++ if (slotIndex < 0) return; // Paper - Add slot sanity checks to container clicks
+ ItemStack itemstack4 = playerinventory.getItem(button);
+
+ slot = (Slot) this.slots.get(slotIndex);