From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Tue, 29 Dec 2020 15:03:03 +0100
Subject: [PATCH] Add sendOpLevel API


diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 6ac6d05390359bd858673c4941e7d90f4cf98a02..f80e4e2d8311ccfb62b7a61a71d8ae43d5d35cf4 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -1123,22 +1123,29 @@ public abstract class PlayerList {
     }
 
     private void sendPlayerPermissionLevel(ServerPlayer player, int permissionLevel) {
-        if (player.connection != null) {
+        // Paper start - add recalculatePermissions parameter
+        this.sendPlayerOperatorStatus(player, permissionLevel, true);
+    }
+    public void sendPlayerOperatorStatus(ServerPlayer entityplayer, int i, boolean recalculatePermissions) {
+        // Paper end
+        if (entityplayer.connection != null) {
             byte b0;
 
-            if (permissionLevel <= 0) {
+            if (i <= 0) {
                 b0 = 24;
-            } else if (permissionLevel >= 4) {
+            } else if (i >= 4) {
                 b0 = 28;
             } else {
-                b0 = (byte) (24 + permissionLevel);
+                b0 = (byte) (24 + i);
             }
 
-            player.connection.send(new ClientboundEntityEventPacket(player, b0));
+            entityplayer.connection.send(new ClientboundEntityEventPacket(entityplayer, b0));
         }
 
-        player.getBukkitEntity().recalculatePermissions(); // CraftBukkit
-        this.server.getCommands().sendCommands(player);
+        if (recalculatePermissions) { // Paper
+        entityplayer.getBukkitEntity().recalculatePermissions(); // CraftBukkit
+        this.server.getCommands().sendCommands(entityplayer);
+        } // Paper
     }
 
     // Paper start
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 77a74b47ffe9c9d02daae74a770427ec1da450a8..e010e67c58b531d00aee7dde6a1bfa05d67aa942 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -553,6 +553,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
             ? (org.bukkit.entity.Firework) entity.getBukkitEntity()
             : null;
     }
+
+    @Override
+    public void sendOpLevel(byte level) {
+        Preconditions.checkArgument(level >= 0 && level <= 4, "Level must be within [0, 4]");
+
+        this.getHandle().getServer().getPlayerList().sendPlayerOperatorStatus(this.getHandle(), level, false);
+    }
     // Paper end
 
     @Override