Warn on plugins accessing faraway chunks (#8208)

2022-07-29 19:16:26 -04:00
parent 792f264084
commit 8d6013b4be
2 changed files with 126 additions and 0 deletions
--- a/patches/server/MC-Utils.patch
+++ b/patches/server/MC-Utils.patch
@@ -3009,6 +3009,36 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        return this.sum;
 +    }
 +}
+diff --git a/src/main/java/io/papermc/paper/util/StackWalkerUtil.java b/src/main/java/io/papermc/paper/util/StackWalkerUtil.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
+--- /dev/null
+++ b/src/main/java/io/papermc/paper/util/StackWalkerUtil.java
+@@ -0,0 +0,0 @@
+package io.papermc.paper.util;
+
+import org.bukkit.plugin.java.JavaPlugin;
+import org.bukkit.plugin.java.PluginClassLoader;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Optional;
+
+public class StackWalkerUtil {
+
+    @Nullable
+    public static JavaPlugin getFirstPluginCaller() {
+        Optional<JavaPlugin> foundFrame = StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE)
+            .walk(stream -> stream
+                .filter(frame -> frame.getDeclaringClass().getClassLoader() instanceof PluginClassLoader)
+                .map((frame) -> {
+                    PluginClassLoader classLoader = (PluginClassLoader) frame.getDeclaringClass().getClassLoader();
+                    return classLoader.getPlugin();
+                })
+                .findFirst());
+
+        return foundFrame.orElse(null);
+    }
+}
 diff --git a/src/main/java/io/papermc/paper/util/WorldUtil.java b/src/main/java/io/papermc/paper/util/WorldUtil.java
 new file mode 100644
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000