From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Shane Freeder Date: Sat, 12 Dec 2020 23:45:28 +0000 Subject: [PATCH] Limit recipe packets diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java index 7d50aded88f5b7dfebaea1aebc86231f7b5c4e25..652d87fc5d566dba8018c81676329f0e0bca471b 100644 --- a/src/main/java/com/destroystokyo/paper/PaperConfig.java +++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java @@ -334,6 +334,13 @@ public class PaperConfig { tabSpamLimit = getInt("settings.spam-limiter.tab-spam-limit", tabSpamLimit); } + public static int autoRecipeIncrement = 1; + public static int autoRecipeLimit = 20; + private static void autoRecipieLimiters() { + autoRecipeIncrement = getInt("settings.spam-limiter.recipe-spam-increment", autoRecipeIncrement); + autoRecipeLimit = getInt("settings.spam-limiter.recipe-spam-limit", autoRecipeLimit); + } + public static boolean velocitySupport; public static boolean velocityOnlineMode; public static byte[] velocitySecretKey; diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java index c49d9eb34883342e685c5363a4d33bf4519b2b3b..4d4b0c1fd4021367f16a292e6059de7f61a8ca8a 100644 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java @@ -232,6 +232,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser // CraftBukkit start - multithreaded fields private AtomicInteger chatSpamTickCount = new AtomicInteger(); private final java.util.concurrent.atomic.AtomicInteger tabSpamLimiter = new java.util.concurrent.atomic.AtomicInteger(); // Paper - configurable tab spam limits + private final java.util.concurrent.atomic.AtomicInteger recipeSpamPackets = new java.util.concurrent.atomic.AtomicInteger(); // Paper - auto recipe limit // CraftBukkit end private int dropSpamTickCount; private double firstGoodX; @@ -377,6 +378,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser // CraftBukkit start for (int spam; (spam = this.chatSpamTickCount.get()) > 0 && !this.chatSpamTickCount.compareAndSet(spam, spam - 1); ) ; if (tabSpamLimiter.get() > 0) tabSpamLimiter.getAndDecrement(); // Paper - split to seperate variable + if (recipeSpamPackets.get() > 0) recipeSpamPackets.getAndDecrement(); // Paper /* Use thread-safe field access instead if (this.chatSpamTickCount > 0) { --this.chatSpamTickCount; @@ -2795,6 +2797,14 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser @Override public void handlePlaceRecipe(ServerboundPlaceRecipePacket packet) { + // Paper start + if (!org.bukkit.Bukkit.isPrimaryThread()) { + if (recipeSpamPackets.addAndGet(com.destroystokyo.paper.PaperConfig.autoRecipeIncrement) > com.destroystokyo.paper.PaperConfig.autoRecipeLimit) { + server.scheduleOnMain(() -> this.disconnect(new TranslatableComponent("disconnect.spam", new Object[0]))); // Paper + return; + } + } + // Paper end PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel()); this.player.resetLastActionTime(); if (!this.player.isSpectator() && this.player.containerMenu.containerId == packet.getContainerId() && this.player.containerMenu instanceof RecipeBookMenu) {