mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-30 04:02:50 +01:00
53 lines
3 KiB
Diff
53 lines
3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Sat, 11 Jul 2020 03:54:28 -0400
|
|
Subject: [PATCH] Thread Safe Vanilla Command permission checking
|
|
|
|
Datapacks check this on load and are built concurrently. This was breaking them badly due
|
|
to race conditions.
|
|
|
|
Plus, .canUse we want to be safe for async anyways.
|
|
|
|
diff --git a/src/main/java/com/mojang/brigadier/tree/CommandNode.java b/src/main/java/com/mojang/brigadier/tree/CommandNode.java
|
|
index 3384501f83d445f45aa8233e98c7597daa67b8ef..6875e15aac37d3566bf04f1a6ee79a21537d2939 100644
|
|
--- a/src/main/java/com/mojang/brigadier/tree/CommandNode.java
|
|
+++ b/src/main/java/com/mojang/brigadier/tree/CommandNode.java
|
|
@@ -75,10 +75,10 @@ public abstract class CommandNode<S> implements Comparable<CommandNode<S>> {
|
|
public synchronized boolean canUse(final S source) {
|
|
if (source instanceof CommandSourceStack) {
|
|
try {
|
|
- ((CommandSourceStack) source).currentCommand = this;
|
|
+ ((CommandSourceStack) source).currentCommand.put(Thread.currentThread(), this); // Paper
|
|
return this.requirement.test(source);
|
|
} finally {
|
|
- ((CommandSourceStack) source).currentCommand = null;
|
|
+ ((CommandSourceStack) source).currentCommand.remove(Thread.currentThread()); // Paper
|
|
}
|
|
}
|
|
// CraftBukkit end
|
|
diff --git a/src/main/java/net/minecraft/commands/CommandSourceStack.java b/src/main/java/net/minecraft/commands/CommandSourceStack.java
|
|
index 75b7b3cf90d1d67203ae19dc3302f06a57470f92..e58c2844356c71973d81b460a21aab795b506d77 100644
|
|
--- a/src/main/java/net/minecraft/commands/CommandSourceStack.java
|
|
+++ b/src/main/java/net/minecraft/commands/CommandSourceStack.java
|
|
@@ -64,7 +64,7 @@ public class CommandSourceStack implements ExecutionCommandSource<CommandSourceS
|
|
private final Vec2 rotation;
|
|
private final CommandSigningContext signingContext;
|
|
private final TaskChainer chatMessageChainer;
|
|
- public volatile CommandNode currentCommand; // CraftBukkit
|
|
+ public java.util.Map<Thread, CommandNode> currentCommand = new java.util.concurrent.ConcurrentHashMap<>(); // CraftBukkit // Paper
|
|
public boolean bypassSelectorPermissions = false; // Paper
|
|
|
|
public CommandSourceStack(CommandSource output, Vec3 pos, Vec2 rot, ServerLevel world, int level, String name, Component displayName, MinecraftServer server, @Nullable Entity entity) {
|
|
@@ -193,9 +193,11 @@ public class CommandSourceStack implements ExecutionCommandSource<CommandSourceS
|
|
@Override
|
|
public boolean hasPermission(int level) {
|
|
// CraftBukkit start
|
|
- CommandNode currentCommand = this.currentCommand;
|
|
+ // Paper start - fix concurrency issue
|
|
+ CommandNode currentCommand = this.currentCommand.get(Thread.currentThread());
|
|
if (currentCommand != null) {
|
|
return this.hasPermission(level, org.bukkit.craftbukkit.command.VanillaCommandWrapper.getPermission(currentCommand));
|
|
+ // Paper end
|
|
}
|
|
// CraftBukkit end
|
|
|