PaperMC/patches/server/0949-Fix-UnsafeValues-loadAdvancement.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

39 lines
2.5 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: LemonCaramel <admin@caramel.moe>
Date: Sun, 24 Sep 2023 20:19:44 +0900
Subject: [PATCH] Fix UnsafeValues#loadAdvancement
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
index fab7dc81f774889300ed0affaef71cbda36517df..6372f3a4fdf6e37ef785749ec40c3bd67b003b28 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -321,7 +321,27 @@ public final class CraftMagicNumbers implements UnsafeValues {
JsonElement jsonelement = ServerAdvancementManager.GSON.fromJson(advancement, JsonElement.class);
net.minecraft.advancements.Advancement nms = Util.getOrThrow(net.minecraft.advancements.Advancement.CODEC.parse(JsonOps.INSTANCE, jsonelement), JsonParseException::new);
if (nms != null) {
- MinecraftServer.getServer().getAdvancements().advancements.put(minecraftkey, new AdvancementHolder(minecraftkey, nms));
+ // Paper start - Fix throw UnsupportedOperationException
+ //MinecraftServer.getServer().getAdvancements().advancements.put(minecraftkey, new AdvancementHolder(minecraftkey, nms));
+ final com.google.common.collect.ImmutableMap.Builder<ResourceLocation, AdvancementHolder> mapBuilder = com.google.common.collect.ImmutableMap.builder();
+ mapBuilder.putAll(MinecraftServer.getServer().getAdvancements().advancements);
+
+ final AdvancementHolder holder = new AdvancementHolder(minecraftkey, nms);
+ mapBuilder.put(minecraftkey, holder);
+
+ MinecraftServer.getServer().getAdvancements().advancements = mapBuilder.build();
+ final net.minecraft.advancements.AdvancementTree tree = MinecraftServer.getServer().getAdvancements().tree();
+ tree.addAll(List.of(holder));
+
+ // recalculate advancement position
+ final net.minecraft.advancements.AdvancementNode node = tree.get(minecraftkey);
+ if (node != null) {
+ final net.minecraft.advancements.AdvancementNode root = node.root();
+ if (root.holder().value().display().isPresent()) {
+ net.minecraft.advancements.TreeNodePosition.run(root);
+ }
+ }
+ // Paper end - Fix throw UnsupportedOperationException
Advancement bukkit = Bukkit.getAdvancement(key);
if (bukkit != null) {