papermc/Spigot-Server-Patches/0293-Fix-exploit-that-allowed-colored-signs-to-be-created.patch

From a1cad034bac6f2931248130c5a65a134a0ccb6b0 Mon Sep 17 00:00:00 2001
From: 0x22 <0x22@futureclient.net>
Date: Thu, 26 Apr 2018 04:41:11 -0400
Subject: [PATCH] Fix exploit that allowed colored signs to be created


diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 74a665142..4f82d8aae 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -2221,7 +2221,7 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
             String[] lines = new String[4];
 
             for (int i = 0; i < astring.length; ++i) {
-                lines[i] = EnumChatFormat.a(new ChatComponentText(EnumChatFormat.a(astring[i])).toPlainText());
+                lines[i] = SharedConstants.a(astring[i]); //Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created.
             }
             SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.server.getPlayer(this.player), lines);
             this.server.getPluginManager().callEvent(event);
-- 
2.17.1