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Validate ResourceLocation in NBT reading

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Nassim Jahnke 2024-01-04 13:52:38 +01:00
commit b2a6d575dd
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GPG key ID: EF6771C01F6EF02F
2 changed files with 70 additions and 5 deletions
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11
patches/server/0419-Support-old-UUID-format-for-NBT.patch
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@ -46,18 +46,21 @@ index 135530bc9d7ecd0348ace6474f4ca6d2e1bad283..e464ada187fd1f15efef29a0e5033aeb
return tag != null && tag.getType() == IntArrayTag.TYPE && ((IntArrayTag)tag).getAsIntArray().length == 4;
}
diff --git a/src/main/java/net/minecraft/nbt/NbtUtils.java b/src/main/java/net/minecraft/nbt/NbtUtils.java
index 4388f2a8b05f5ed2f0934c1693299a4c92072adc..b65dcff9812dbc3256c080ac264c4aafd83ce276 100644
index 4388f2a8b05f5ed2f0934c1693299a4c92072adc..18fad4f083862ace2bc56579883f548f6d697091 100644
--- a/src/main/java/net/minecraft/nbt/NbtUtils.java
+++ b/src/main/java/net/minecraft/nbt/NbtUtils.java
@@ -72,6 +72,11 @@ public final class NbtUtils {
@@ -72,6 +72,14 @@ public final class NbtUtils {
@Nullable
public static GameProfile readGameProfile(CompoundTag nbt) {
UUID uUID = nbt.hasUUID("Id") ? nbt.getUUID("Id") : Util.NIL_UUID;
+ // Paper start - support string UUID's
+ // Paper start - Support string UUIDs
+ if (nbt.contains("Id", Tag.TAG_STRING)) {
+ try {
+ uUID = UUID.fromString(nbt.getString("Id"));
+ } catch (IllegalArgumentException ignored){
+ }
+ // Paper end
+ }
+ // Paper end - Support string UUIDs
String string = nbt.getString("Name");
try {

62
patches/server/1060-Validate-ResourceLocation-in-NBT-reading.patch Normal file
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@ -0,0 +1,62 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Thu, 4 Jan 2024 13:49:14 +0100
Subject: [PATCH] Validate ResourceLocation in NBT reading
diff --git a/src/main/java/net/minecraft/nbt/NbtUtils.java b/src/main/java/net/minecraft/nbt/NbtUtils.java
index 18fad4f083862ace2bc56579883f548f6d697091..80083fed4b44b9d433925f09db83e559582109a1 100644
--- a/src/main/java/net/minecraft/nbt/NbtUtils.java
+++ b/src/main/java/net/minecraft/nbt/NbtUtils.java
@@ -230,8 +230,10 @@ public final class NbtUtils {
if (!nbt.contains("Name", 8)) {
return Blocks.AIR.defaultBlockState();
} else {
- ResourceLocation resourceLocation = new ResourceLocation(nbt.getString("Name"));
- Optional<? extends Holder<Block>> optional = blockLookup.get(ResourceKey.create(Registries.BLOCK, resourceLocation));
+ // Paper start - Validate resource location
+ ResourceLocation resourceLocation = ResourceLocation.tryParse(nbt.getString("Name"));
+ Optional<? extends Holder<Block>> optional = resourceLocation != null ? blockLookup.get(ResourceKey.create(Registries.BLOCK, resourceLocation)) : Optional.empty();
+ // Paper end
if (optional.isEmpty()) {
return Blocks.AIR.defaultBlockState();
} else {
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index e0cf7771488ab0065708d68b4e8550b865af0ed4..a7fbd329ea6d36a46c00b4476c74e426dbbfe238 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -620,7 +620,7 @@ public abstract class Mob extends LivingEntity implements Targeting {
this.setLeftHanded(nbt.getBoolean("LeftHanded"));
if (nbt.contains("DeathLootTable", 8)) {
- this.lootTable = new ResourceLocation(nbt.getString("DeathLootTable"));
+ this.lootTable = ResourceLocation.tryParse(nbt.getString("DeathLootTable")); // Paper - Validate ResourceLocation
this.lootTableSeed = nbt.getLong("DeathLootTableSeed");
}
diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
index 42ebd91196ae420eee57f4380abc558555457163..b61a367048c3d6dfef187fef35a5dc7471f891d0 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
@@ -560,7 +560,7 @@ public abstract class AbstractArrow extends Projectile {
this.setCritArrow(nbt.getBoolean("crit"));
this.setPierceLevel(nbt.getByte("PierceLevel"));
if (nbt.contains("SoundEvent", 8)) {
- this.soundEvent = (SoundEvent) BuiltInRegistries.SOUND_EVENT.getOptional(new ResourceLocation(nbt.getString("SoundEvent"))).orElse(this.getDefaultHitGroundSoundEvent());
+ this.soundEvent = (SoundEvent) BuiltInRegistries.SOUND_EVENT.getOptional(ResourceLocation.tryParse(nbt.getString("SoundEvent"))).orElse(this.getDefaultHitGroundSoundEvent()); // Paper - Validate resource location
}
this.setShotFromCrossbow(nbt.getBoolean("ShotFromCrossbow"));
diff --git a/src/main/java/net/minecraft/world/entity/vehicle/ContainerEntity.java b/src/main/java/net/minecraft/world/entity/vehicle/ContainerEntity.java
index 7529751afa2932fd16bc4591189b0358268a7b14..e2e1c7a017e82dc7299e5cd1783818e4f0319c0b 100644
--- a/src/main/java/net/minecraft/world/entity/vehicle/ContainerEntity.java
+++ b/src/main/java/net/minecraft/world/entity/vehicle/ContainerEntity.java
@@ -67,7 +67,7 @@ public interface ContainerEntity extends Container, MenuProvider {
default void readChestVehicleSaveData(CompoundTag nbt) {
this.clearItemStacks();
if (nbt.contains("LootTable", 8)) {
- this.setLootTable(new ResourceLocation(nbt.getString("LootTable")));
+ this.setLootTable(ResourceLocation.tryParse(nbt.getString("LootTable"))); // Paper - Validate ResourceLocation
this.setLootTableSeed(nbt.getLong("LootTableSeed"));
}