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89d51d5f29
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.
67 lines
3.1 KiB
Diff
67 lines
3.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 29 Jun 2020 03:26:17 -0400
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Subject: [PATCH] Support old UUID format for NBT
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We have stored UUID in plenty of places that did not get DFU'd
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So just look for old format and load it if it exists.
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diff --git a/src/main/java/net/minecraft/nbt/CompoundTag.java b/src/main/java/net/minecraft/nbt/CompoundTag.java
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index 2c760084cd1b84a1f2c4f6a6db8d396a1b3c5395..eea9866aecb7189455319d83561fcef35a777d7a 100644
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--- a/src/main/java/net/minecraft/nbt/CompoundTag.java
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+++ b/src/main/java/net/minecraft/nbt/CompoundTag.java
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@@ -237,6 +237,12 @@ public class CompoundTag implements Tag {
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}
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public void putUUID(String key, UUID value) {
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+ // Paper start - Support old UUID format
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+ if (this.contains(key + "Most", net.minecraft.nbt.Tag.TAG_ANY_NUMERIC) && this.contains(key + "Least", net.minecraft.nbt.Tag.TAG_ANY_NUMERIC)) {
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+ this.tags.remove(key + "Most");
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+ this.tags.remove(key + "Least");
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+ }
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+ // Paper end - Support old UUID format
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this.tags.put(key, NbtUtils.createUUID(value));
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}
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@@ -245,10 +251,20 @@ public class CompoundTag implements Tag {
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* You must use {@link #hasUUID(String)} before or else it <b>will</b> throw an NPE.
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*/
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public UUID getUUID(String key) {
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+ // Paper start - Support old UUID format
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+ if (!contains(key, 11) && this.contains(key + "Most", net.minecraft.nbt.Tag.TAG_ANY_NUMERIC) && this.contains(key + "Least", net.minecraft.nbt.Tag.TAG_ANY_NUMERIC)) {
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+ return new UUID(this.getLong(key + "Most"), this.getLong(key + "Least"));
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+ }
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+ // Paper end - Support old UUID format
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return NbtUtils.loadUUID(this.get(key));
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}
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public boolean hasUUID(String key) {
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+ // Paper start - Support old UUID format
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+ if (this.contains(key + "Most", net.minecraft.nbt.Tag.TAG_ANY_NUMERIC) && this.contains(key + "Least", net.minecraft.nbt.Tag.TAG_ANY_NUMERIC)) {
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+ return true;
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+ }
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+ // Paper end - Support old UUID format
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Tag tag = this.get(key);
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return tag != null && tag.getType() == IntArrayTag.TYPE && ((IntArrayTag)tag).getAsIntArray().length == 4;
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}
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diff --git a/src/main/java/net/minecraft/nbt/NbtUtils.java b/src/main/java/net/minecraft/nbt/NbtUtils.java
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index 4388f2a8b05f5ed2f0934c1693299a4c92072adc..ba0726157417cdde1c9bca93a9e37e68d9b2286d 100644
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--- a/src/main/java/net/minecraft/nbt/NbtUtils.java
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+++ b/src/main/java/net/minecraft/nbt/NbtUtils.java
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@@ -72,6 +72,14 @@ public final class NbtUtils {
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@Nullable
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public static GameProfile readGameProfile(CompoundTag nbt) {
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UUID uUID = nbt.hasUUID("Id") ? nbt.getUUID("Id") : Util.NIL_UUID;
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+ // Paper start - Support old UUID format
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+ if (nbt.contains("Id", Tag.TAG_STRING)) {
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+ try {
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+ uUID = UUID.fromString(nbt.getString("Id"));
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+ } catch (IllegalArgumentException ignored){
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+ }
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+ }
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+ // Paper end - Support old UUID format
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String string = nbt.getString("Name");
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try {
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