From 5ac485db465658305b6cc4cef8b9002e33dfa82e Mon Sep 17 00:00:00 2001
From: Bukkit/Spigot <noreply+git-bukkit@papermc.io>
Date: Thu, 31 Mar 2011 14:16:13 +0000
Subject: [PATCH] Seal-fail workaround

By: lukegb <github@lukegb.com>
---
 .../src/main/java/org/bukkit/plugin/PluginDescriptionFile.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/paper-api/src/main/java/org/bukkit/plugin/PluginDescriptionFile.java b/paper-api/src/main/java/org/bukkit/plugin/PluginDescriptionFile.java
index 63c90f49e2..6f6d5c4ae4 100644
--- a/paper-api/src/main/java/org/bukkit/plugin/PluginDescriptionFile.java
+++ b/paper-api/src/main/java/org/bukkit/plugin/PluginDescriptionFile.java
@@ -139,6 +139,9 @@ public final class PluginDescriptionFile {
 
         try {
             main = map.get("main").toString();
+            if (main.startsWith("org.bukkit.")) {
+                throw new InvalidDescriptionException("main may not be within the org.bukkit namespace");
+            }
         } catch (NullPointerException ex) {
             throw new InvalidDescriptionException(ex, "main is not defined");
         } catch (ClassCastException ex) {