Paper/CraftBukkit-Patches/0031-Filter-Invalid-Names.patch

30 lines
1.3 KiB
Diff

From 57f5dde7b29dcadacb2644c674597db06a5fe8e7 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Thu, 25 Jul 2013 17:06:02 +1000
Subject: [PATCH] Filter Invalid Names
diff --git a/src/main/java/net/minecraft/server/PendingConnection.java b/src/main/java/net/minecraft/server/PendingConnection.java
index 8f1c214..d83d475 100644
--- a/src/main/java/net/minecraft/server/PendingConnection.java
+++ b/src/main/java/net/minecraft/server/PendingConnection.java
@@ -66,13 +66,14 @@ public class PendingConnection extends Connection {
}
}
+ private static final java.util.regex.Pattern validName = java.util.regex.Pattern.compile("^[a-zA-Z0-9_-]{2,16}$"); // Spigot
public void a(Packet2Handshake packet2handshake) {
if (this.g != null) {
this.disconnect("Quit repeating yourself!");
} else {
this.hostname = packet2handshake.c + ':' + packet2handshake.d; // CraftBukkit - initialize field
this.g = packet2handshake.f();
- if (!this.g.equals(StripColor.a(this.g))) {
+ if (!this.g.equals(StripColor.a(this.g)) || !validName.matcher( this.g ).matches() ) { // Spigot
this.disconnect("Invalid username!");
} else {
PublicKey publickey = this.server.H().getPublic();
--
1.8.1.2