1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 29 Jul 2018 05:02:15 +0100
Subject: [PATCH] Break up and make tab spam limits configurable
Due to the changes in 1.13, clients will send a tab completion request
for all bukkit commands in order to factor in the lack of support for
brigadier and provide backwards support in the API.
Craftbukkit, however; has moved the chat spam limiter to also interact
with the tab completion request, which while good for avoiding abuse,
causes 1.13 clients to easilly be kicked from a server in bukkit due
to this. Removing the spam limit could cause issues for servers, however,
there is no way for servers to manipulate this without blindly cancelling
kick events, which only causes additional complications. This also causes
issues in that the tab spam limit and chat share the same field but different
limits, meaning that a player having typed a long command may be kicked from
the server.
Splitting the field up and making it configurable allows for server owners
to take the burden of this into their own hand without having to rely on
plugins doing unsafe things.
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index e933d54c309da046554029d1f232daa31659e537..9dba4eb0e9c4e4d974edaeaf41c370d3996dd94e 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -318,4 +318,18 @@ public class PaperConfig {
Bukkit.getLogger().log(Level.INFO, "Using Aikar's Alternative Luck Formula to apply Luck attribute to all loot pool calculations. See https://luckformula.emc.gs");
}
}
+
+ public static int tabSpamIncrement = 1;
+ public static int tabSpamLimit = 500;
+ private static void tabSpamLimiters() {
+ tabSpamIncrement = getInt("settings.spam-limiter.tab-spam-increment", tabSpamIncrement);
+ // Older versions used a smaller limit, which is too low for 1.13, we'll bump this up if default
+ if (version < 14) {
+ if (tabSpamIncrement == 10) {
+ set("settings.spam-limiter.tab-spam-increment", 2);
+ tabSpamIncrement = 2;
+ }
+ }
+ tabSpamLimit = getInt("settings.spam-limiter.tab-spam-limit", tabSpamLimit);
+ }
}
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index dced761b1f74de28a784dfcffed1bbc002e5a586..8a1da2b1e667420df97e432b5a5fd9563cadda91 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -227,6 +227,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
private long keepAliveChallenge;
// CraftBukkit start - multithreaded fields
private final AtomicInteger chatSpamTickCount = new AtomicInteger();
+ private final java.util.concurrent.atomic.AtomicInteger tabSpamLimiter = new java.util.concurrent.atomic.AtomicInteger(); // Paper - configurable tab spam limits
// CraftBukkit end
private int dropSpamTickCount;
private double firstGoodX;
@@ -358,6 +359,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
this.server.getProfiler().pop();
// 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
/* Use thread-safe field access instead
if (this.chatSpamTickCount > 0) {
--this.chatSpamTickCount;
@@ -710,7 +712,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
public void handleCustomCommandSuggestions(ServerboundCommandSuggestionPacket packet) {
// PlayerConnectionUtils.ensureMainThread(packetplayintabcomplete, this, this.player.getWorldServer()); // Paper - run this async
// CraftBukkit start
- if (this.chatSpamTickCount.addAndGet(1) > 500 && !this.server.getPlayerList().isOp(this.player.getGameProfile())) {
+ if (this.chatSpamTickCount.addAndGet(com.destroystokyo.paper.PaperConfig.tabSpamIncrement) > com.destroystokyo.paper.PaperConfig.tabSpamLimit && !this.server.getPlayerList().isOp(this.player.getGameProfile())) { // Paper start - split and make configurable
server.scheduleOnMain(() -> this.disconnect(new TranslatableComponent("disconnect.spam", new Object[0]))); // Paper
return;
}
|
