From 3eede450ed5465e708ccbae834b7ed787fb96268 Mon Sep 17 00:00:00 2001
From: CraftBukkit/Spigot <noreply+git-craftbukkit@papermc.io>
Date: Sat, 5 Jan 2019 16:21:07 +1100
Subject: [PATCH] Cap Channel Registrations

By: md_5 <git@md-5.net>
---
 .../src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 6613599a3..d2bb043e9 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1209,6 +1209,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     }
 
     public void addChannel(String channel) {
+        Preconditions.checkState(channels.size() < 128, "Cannot register channel '%s'. Too many channels registered!", channel);
         channel = StandardMessenger.validateAndCorrectChannel(channel);
         if (channels.add(channel)) {
             server.getPluginManager().callEvent(new PlayerRegisterChannelEvent(this, channel));