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 b92975aa85fd79c70d6bec014284e8f55d0d3a4b..d5d6c545182b9b0b6aa5e52f1f9858450a17038e 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 c0 != 167 && c0 >= ' ' && c0 != 127; } + public static String filterAllowedChatCharacters(String input) { return a(input); } // Paper - OBFHELPER public static String a(String s) { StringBuilder stringbuilder = new StringBuilder(); char[] achar = s.toCharArray(); diff --git a/src/main/java/net/minecraft/server/network/PlayerConnection.java b/src/main/java/net/minecraft/server/network/PlayerConnection.java index cbffc7e1cf7ca7597517cdae12ec9be5efe97217..415f34109019e68638f76fefa52bd8d40c449e12 100644 --- a/src/main/java/net/minecraft/server/network/PlayerConnection.java +++ b/src/main/java/net/minecraft/server/network/PlayerConnection.java @@ -2774,7 +2774,7 @@ public class PlayerConnection implements PacketListenerPlayIn { List 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.server.getPluginManager().callEvent(event);