From 5cf869df1a90ca3ac8316ff2e17127104b6c80d8 Mon Sep 17 00:00:00 2001
From: MrMicky <git@mrmicky.fr>
Date: Sat, 9 Oct 2021 09:25:29 +1100
Subject: [PATCH] #3198: Remove terminally deprecated SecurityManager

See https://openjdk.java.net/jeps/411
---
 .../main/java/net/md_5/bungee/BungeeCord.java |  2 -
 .../md_5/bungee/BungeeSecurityManager.java    | 78 -------------------
 2 files changed, 80 deletions(-)
 delete mode 100644 proxy/src/main/java/net/md_5/bungee/BungeeSecurityManager.java

diff --git a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
index 0e5c25e9..c3bb3afa 100644
--- a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
+++ b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
@@ -189,8 +189,6 @@ public class BungeeCord extends ProxyServer
         // Java uses ! to indicate a resource inside of a jar/zip/other container. Running Bungee from within a directory that has a ! will cause this to muck up.
         Preconditions.checkState( new File( "." ).getAbsolutePath().indexOf( '!' ) == -1, "Cannot use BungeeCord in directory with ! in path." );
 
-        System.setSecurityManager( new BungeeSecurityManager() );
-
         try
         {
             baseBundle = ResourceBundle.getBundle( "messages" );
diff --git a/proxy/src/main/java/net/md_5/bungee/BungeeSecurityManager.java b/proxy/src/main/java/net/md_5/bungee/BungeeSecurityManager.java
deleted file mode 100644
index 53c81923..00000000
--- a/proxy/src/main/java/net/md_5/bungee/BungeeSecurityManager.java
+++ /dev/null
@@ -1,78 +0,0 @@
-package net.md_5.bungee;
-
-import java.io.PrintWriter;
-import java.io.StringWriter;
-import java.security.AccessControlException;
-import java.security.Permission;
-import java.util.HashSet;
-import java.util.Set;
-import java.util.logging.Level;
-import net.md_5.bungee.api.ProxyServer;
-import net.md_5.bungee.api.scheduler.GroupedThreadFactory;
-
-public class BungeeSecurityManager extends SecurityManager
-{
-
-    private static final boolean ENFORCE = false;
-    private final Set<String> seen = new HashSet<>();
-
-    private void checkRestricted(String text)
-    {
-        Class[] context = getClassContext();
-        for ( int i = 2; i < context.length; i++ )
-        {
-            ClassLoader loader = context[i].getClassLoader();
-
-            // Bungee / system can do everything
-            if ( loader == ClassLoader.getSystemClassLoader() || loader == null )
-            {
-                break;
-            }
-
-            AccessControlException ex = new AccessControlException( "Plugin violation: " + text );
-            if ( ENFORCE )
-            {
-                throw ex;
-            }
-
-            StringWriter stack = new StringWriter();
-            ex.printStackTrace( new PrintWriter( stack ) );
-            if ( seen.add( stack.toString() ) )
-            {
-                ProxyServer.getInstance().getLogger().log( Level.WARNING, "Plugin performed restricted action, please inform them to use proper API methods: " + text, ex );
-            }
-            break;
-        }
-    }
-
-    @Override
-    public void checkExit(int status)
-    {
-        checkRestricted( "Exit: Cannot close VM" );
-    }
-
-    @Override
-    public void checkAccess(ThreadGroup g)
-    {
-        if ( !( g instanceof GroupedThreadFactory.BungeeGroup ) )
-        {
-            checkRestricted( "Illegal thread group access" );
-        }
-    }
-
-    @Override
-    public void checkPermission(Permission perm, Object context)
-    {
-        checkPermission( perm );
-    }
-
-    @Override
-    public void checkPermission(Permission perm)
-    {
-        switch ( perm.getName() )
-        {
-            case "setSecurityManager":
-                throw new AccessControlException( "Restricted Action", perm );
-        }
-    }
-}