testserver/patches/server/0833-Kick-on-main-for-illegal-chat.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Mon, 17 Jan 2022 19:47:19 +0100
Subject: [PATCH] Kick on main for illegal chat

Makes the PlayerKickEvent fire on the main thread for
illegal characters or chat out-of-order errors.

diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index dfc4a0d7a5d91d6fb874203c88d051bf42cb7e5c..aedea81d08c2fb0df6471481c89c706c614e9a2f 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2177,7 +2177,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
         }
         // CraftBukkit end
         if (ServerGamePacketListenerImpl.isChatMessageIllegal(packet.message())) {
+            this.server.scheduleOnMain(() -> { // Paper - push to main for event firing
             this.disconnect(Component.translatable("multiplayer.disconnect.illegal_characters"), org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_CHARACTERS); // Paper - add cause
+            }); // Paper - push to main for event firing
         } else {
             if (this.tryHandleChat(packet.message(), packet.timeStamp(), packet.lastSeenMessages())) {
                 // this.server.submit(() -> { // CraftBukkit - async chat
@@ -2205,7 +2207,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
     @Override
     public void handleChatCommand(ServerboundChatCommandPacket packet) {
         if (ServerGamePacketListenerImpl.isChatMessageIllegal(packet.command())) {
+            this.server.scheduleOnMain(() -> { // Paper - push to main for event firing
             this.disconnect(Component.translatable("multiplayer.disconnect.illegal_characters"), org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_CHARACTERS); // Paper
+            }); // Paper - push to main for event firing
         } else {
             if (this.tryHandleChat(packet.command(), packet.timeStamp(), packet.lastSeenMessages())) {
                 this.server.submit(() -> {
@@ -2298,7 +2302,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
         // Paper end
         if (!this.updateChatOrder(timestamp)) {
             ServerGamePacketListenerImpl.LOGGER.warn("{} sent out-of-order chat: '{}'", this.player.getName().getString(), message);
+            this.server.scheduleOnMain(() -> { // Paper - push to main
             this.disconnect(Component.translatable("multiplayer.disconnect.out_of_order_chat"), org.bukkit.event.player.PlayerKickEvent.Cause.OUT_OF_ORDER_CHAT); // Paper - kick event cause
+            }); // Paper - push to main
             return false;
         } else if (this.player.isRemoved() || this.player.getChatVisibility() == ChatVisiblity.HIDDEN) { // CraftBukkit - dead men tell no tales
             this.send(new ClientboundSystemChatPacket(Component.translatable("chat.disabled.options").withStyle(ChatFormatting.RED), false));