From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Nassim Jahnke 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 735b47f2c452229f7d6951b5b1869ef40b14d26b..46a5cc73b1fef1cfa69e110619eedc431e1b7fa9 100644 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java @@ -2007,7 +2007,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl } // 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 { Optional optional = this.tryHandleChat(packet.message(), packet.timeStamp(), packet.lastSeenMessages()); @@ -2040,7 +2042,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl @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 { Optional optional = this.tryHandleChat(packet.command(), packet.timeStamp(), packet.lastSeenMessages()); @@ -2126,7 +2130,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl private Optional tryHandleChat(String message, Instant timestamp, LastSeenMessages.Update acknowledgment) { 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 causes + }); // Paper - push to main return Optional.empty(); } else { Optional optional = this.unpackAndApplyLastSeen(acknowledgment);