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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.
72 lines
3.8 KiB
Diff
72 lines
3.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: miclebrick <miclebrick@outlook.com>
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Date: Thu, 6 Dec 2018 19:52:50 -0500
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Subject: [PATCH] Cache block data strings
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diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
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index 21176d6e57ae9e975b1e7de14b3364365cc1012d..47ad733022e5d17d839209e4163e8508e57b43c8 100644
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--- a/src/main/java/net/minecraft/server/MinecraftServer.java
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+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
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@@ -2068,6 +2068,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
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this.getPlayerList().reloadResources();
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this.functionManager.replaceLibrary(this.resources.managers.getFunctionLibrary());
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this.structureTemplateManager.onResourceManagerReload(this.resources.resourceManager);
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+ org.bukkit.craftbukkit.block.data.CraftBlockData.reloadCache(); // Paper - cache block data strings; they can be defined by datapacks so refresh it here
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}, this);
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if (this.isSameThread()) {
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diff --git a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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index fce3fec5e1ff164b0596fdd6b3d7b5b0277253ef..587396f5ed01939cd3ddce10fecf86ba80eb9c73 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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+++ b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
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@@ -154,7 +154,7 @@ public class CraftBlockData implements BlockData {
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return exactMatch;
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}
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- private static final Map<Class<? extends Enum<?>>, Enum<?>[]> ENUM_VALUES = new HashMap<>();
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+ private static final Map<Class<? extends Enum<?>>, Enum<?>[]> ENUM_VALUES = new java.util.concurrent.ConcurrentHashMap<>(); // Paper - cache block data strings; make thread safe
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/**
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* Convert an NMS Enum (usually a BlockStateEnum) to its appropriate Bukkit
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@@ -537,9 +537,39 @@ public class CraftBlockData implements BlockData {
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Preconditions.checkState(CraftBlockData.MAP.put(nms, bukkit) == null, "Duplicate mapping %s->%s", nms, bukkit);
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}
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+ // Paper start - cache block data strings
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+ private static Map<String, CraftBlockData> stringDataCache = new java.util.concurrent.ConcurrentHashMap<>();
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+
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+ static {
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+ // cache all of the default states at startup, will not cache ones with the custom states inside of the
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+ // brackets in a different order, though
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+ reloadCache();
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+ }
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+
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+ public static void reloadCache() {
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+ stringDataCache.clear();
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+ Block.BLOCK_STATE_REGISTRY.forEach(blockData -> stringDataCache.put(blockData.toString(), blockData.createCraftBlockData()));
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+ }
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+ // Paper end - cache block data strings
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+
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public static CraftBlockData newData(Material material, String data) {
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Preconditions.checkArgument(material == null || material.isBlock(), "Cannot get data for not block %s", material);
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+ // Paper start - cache block data strings
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+ if (material != null) {
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+ Block block = CraftBlockType.bukkitToMinecraft(material);
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+ if (block != null) {
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+ net.minecraft.resources.ResourceLocation key = BuiltInRegistries.BLOCK.getKey(block);
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+ data = data == null ? key.toString() : key + data;
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+ }
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+ }
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+
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+ CraftBlockData cached = stringDataCache.computeIfAbsent(data, s -> createNewData(null, s));
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+ return (CraftBlockData) cached.clone();
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+ }
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+
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+ private static CraftBlockData createNewData(Material material, String data) {
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+ // Paper end - cache block data strings
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net.minecraft.world.level.block.state.BlockState blockData;
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Block block = CraftBlockType.bukkitToMinecraft(material);
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Map<Property<?>, Comparable<?>> parsed = null;
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