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70ce6ce831
This makes it easier for downstream projects (forks) to replace the version fetching system with their own. It is as simple as implementing an interface and overriding the default implementation of org.bukkit.UnsafeValues#getVersionFetcher() It also makes it easier for us to organize things like the version history feature. Lastly I have updated the paper implementation to check against the site API rather than against jenkins.
79 lines
4.5 KiB
Diff
79 lines
4.5 KiB
Diff
From 857d9e53fdaa40d9764c085983bfb7eb59bfb4f6 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Sun, 29 Jul 2018 05:02:15 +0100
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Subject: [PATCH] Break up and make tab spam limits configurable
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Due to the changes in 1.13, clients will send a tab completion request
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for all bukkit commands in order to factor in the lack of support for
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brigadier and provide backwards support in the API.
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Craftbukkit, however; has moved the chat spam limiter to also interact
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with the tab completion request, which while good for avoiding abuse,
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causes 1.13 clients to easilly be kicked from a server in bukkit due
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to this. Removing the spam limit could cause issues for servers, however,
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there is no way for servers to manipulate this without blindly cancelling
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kick events, which only causes additional complications. This also causes
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issues in that the tab spam limit and chat share the same field but different
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limits, meaning that a player having typed a long command may be kicked from
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the server.
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Splitting the field up and making it configurable allows for server owners
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to take the burden of this into their own hand without having to rely on
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plugins doing unsafe things.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index 8c3880c83..d773ef5b0 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -311,4 +311,18 @@ public class PaperConfig {
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logger.log(Level.INFO, "******************************************************");
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}
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}
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+
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+ public static int tabSpamIncrement = 1;
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+ public static int tabSpamLimit = 500;
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+ private static void tabSpamLimiters() {
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+ tabSpamIncrement = getInt("settings.spam-limiter.tab-spam-increment", tabSpamIncrement);
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+ // Older versions used a smaller limit, which is too low for 1.13, we'll bump this up if default
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+ if (version < 14) {
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+ if (tabSpamIncrement == 10) {
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+ set("settings.spam-limiter.tab-spam-increment", 2);
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+ tabSpamIncrement = 2;
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+ }
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+ }
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+ tabSpamLimit = getInt("settings.spam-limiter.tab-spam-limit", tabSpamLimit);
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
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index 4c99a321b..07e9abda9 100644
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--- a/src/main/java/net/minecraft/server/PlayerConnection.java
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+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
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@@ -76,6 +76,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
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// CraftBukkit start - multithreaded fields
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private volatile int chatThrottle;
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private static final AtomicIntegerFieldUpdater chatSpamField = AtomicIntegerFieldUpdater.newUpdater(PlayerConnection.class, "chatThrottle");
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+ private final java.util.concurrent.atomic.AtomicInteger tabSpamLimiter = new java.util.concurrent.atomic.AtomicInteger(); // Paper - configurable tab spam limits
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// CraftBukkit end
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private int j;
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private final Int2ShortMap k = new Int2ShortOpenHashMap();
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@@ -204,6 +205,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
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this.minecraftServer.getMethodProfiler().exit();
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// CraftBukkit start
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for (int spam; (spam = this.chatThrottle) > 0 && !chatSpamField.compareAndSet(this, spam, spam - 1); ) ;
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+ if (tabSpamLimiter.get() > 0) tabSpamLimiter.getAndDecrement(); // Paper - split to seperate variable
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/* Use thread-safe field access instead
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if (this.chatThrottle > 0) {
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--this.chatThrottle;
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@@ -522,7 +524,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
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public void a(PacketPlayInTabComplete packetplayintabcomplete) {
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// PlayerConnectionUtils.ensureMainThread(packetplayintabcomplete, this, this.player.getWorldServer()); // Paper - run this async
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// CraftBukkit start
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- if (chatSpamField.addAndGet(this, 1) > 500 && !this.minecraftServer.getPlayerList().isOp(this.player.getProfile())) {
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+ if (tabSpamLimiter.addAndGet(com.destroystokyo.paper.PaperConfig.tabSpamIncrement) > com.destroystokyo.paper.PaperConfig.tabSpamLimit && !this.minecraftServer.getPlayerList().isOp(this.player.getProfile())) { // Paper start - split and make configurable
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minecraftServer.scheduleOnMain(() -> this.disconnect(new ChatMessage("disconnect.spam", new Object[0]))); // Paper
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return;
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}
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--
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2.21.0
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