PaperMC/Remapped-Spigot-Server-Patches/0208-Fix-exploit-that-allowed-colored-signs-to-be-created.patch

From 0000000000000000000000000000000000000000 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/SharedConstants.java b/src/main/java/net/minecraft/SharedConstants.java
index a70c3d25930e7414fc9e897de8d2e0c12f11c0e4..04b8783417bbcd826d6d1c302551fbad9c48bd01 100644
--- a/src/main/java/net/minecraft/SharedConstants.java
+++ b/src/main/java/net/minecraft/SharedConstants.java
@@ -20,6 +20,7 @@ public class SharedConstants {
         return chr != 167 && chr >= ' ' && chr != 127;
     }
 
+    public static String filterAllowedChatCharacters(String input) { return filterText(input); } // Paper - OBFHELPER
     public static String filterText(String s) {
         StringBuilder stringbuilder = new StringBuilder();
         char[] achar = s.toCharArray();
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 8d0c44b6c2c99d5161c5d4b79209b79ff6db75e4..fb36aa08cd2fbe3f7262dccb8cf0f7cae55aea9c 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2786,7 +2786,7 @@ public class ServerGamePacketListenerImpl implements ServerGamePacketListener {
             List<net.kyori.adventure.text.Component> lines = new java.util.ArrayList<>();
 
             for (int i = 0; i < list.size(); ++i) {
-                lines.add(net.kyori.adventure.text.Component.text(list.get(i)));
+                lines.add(net.kyori.adventure.text.Component.text(SharedConstants.filterAllowedChatCharacters(list.get(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.at(worldserver, blockposition), this.getPlayer(), lines);
             this.craftServer.getPluginManager().callEvent(event);