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Allow enabling sand duping (#10191)

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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.
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Owen 2024-03-03 17:05:34 -05:00 • committed by GitHub
parent b21eb4d9a4
commit 89d51d5f29
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GPG key ID: B5690EEEBB952194
673 changed files with 157 additions and 189 deletions
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63
patches/server/0401-Update-itemstack-legacy-name-and-lore.patch
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@ -1,63 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Wed, 1 Jul 2020 11:57:40 -0500
Subject: [PATCH] Update itemstack legacy name and lore
diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java
index 0a3fec9b82a4d744f9046aebe30f80bb6e56c500..4a6e128c62c890c34b62f826d586ae6a424e7f01 100644
--- a/src/main/java/net/minecraft/world/item/ItemStack.java
+++ b/src/main/java/net/minecraft/world/item/ItemStack.java
@@ -196,6 +196,44 @@ public final class ItemStack {
list.sort((java.util.Comparator<? super net.minecraft.nbt.Tag>) enchantSorter); // Paper
} catch (Exception ignored) {}
}
+
+ private void processText() {
+ CompoundTag display = getTagElement("display");
+ if (display != null) {
+ if (display.contains("Name", net.minecraft.nbt.Tag.TAG_STRING)) {
+ String json = display.getString("Name");
+ if (json != null && json.contains("\u00A7")) {
+ try {
+ display.put("Name", convert(json));
+ } catch (com.google.gson.JsonParseException jsonparseexception) {
+ display.remove("Name");
+ }
+ }
+ }
+ if (display.contains("Lore", net.minecraft.nbt.Tag.TAG_LIST)) {
+ ListTag list = display.getList("Lore", net.minecraft.nbt.Tag.TAG_STRING);
+ for (int index = 0; index < list.size(); index++) {
+ String json = list.getString(index);
+ if (json != null && json.contains("\u00A7")) { // Only try if it has legacy in the unparsed json
+ try {
+ list.set(index, convert(json));
+ } catch (com.google.gson.JsonParseException e) {
+ list.set(index, net.minecraft.nbt.StringTag.valueOf(org.bukkit.craftbukkit.util.CraftChatMessage.toJSON(net.minecraft.network.chat.Component.literal(""))));
+ }
+ }
+ }
+ }
+ }
+ }
+
+ private net.minecraft.nbt.StringTag convert(String json) {
+ Component component = Component.Serializer.fromJson(json);
+ if (component.getContents() instanceof final net.minecraft.network.chat.contents.PlainTextContents plainTextContents && plainTextContents.text().contains("\u00A7") && component.getSiblings().isEmpty()) {
+ // Only convert if the root component is a single comp with legacy in it, don't convert already normal components
+ component = org.bukkit.craftbukkit.util.CraftChatMessage.fromString(plainTextContents.text())[0];
+ }
+ return net.minecraft.nbt.StringTag.valueOf(org.bukkit.craftbukkit.util.CraftChatMessage.toJSON(component));
+ }
// Paper end
public ItemStack(ItemLike item) {
@@ -245,6 +283,7 @@ public final class ItemStack {
if (nbttagcompound.contains("tag", 10)) {
this.tag = nbttagcompound.getCompound("tag").copy();
this.processEnchantOrder(this.tag); // Paper
+ this.processText(); // Paper - Update itemstack legacy name and lore
this.getItem().verifyTagAfterLoad(this.tag);
}