From c1e4040cb6a5e97c941c311da0b54df5dc1afbc8 Mon Sep 17 00:00:00 2001
From: Camotoy <20743703+Camotoy@users.noreply.github.com>
Date: Mon, 17 Jan 2022 16:10:56 -0500
Subject: [PATCH] Don't let Bedrock players send format character

See https://github.com/PaperMC/Paper/issues/7362
---
 .../protocol/bedrock/BedrockTextTranslator.java     | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/BedrockTextTranslator.java b/core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/BedrockTextTranslator.java
index 035a2afe2..1a6771cc5 100644
--- a/core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/BedrockTextTranslator.java
+++ b/core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/BedrockTextTranslator.java
@@ -28,6 +28,7 @@ package org.geysermc.geyser.translator.protocol.bedrock;
 import com.github.steveice10.mc.protocol.packet.ingame.serverbound.ServerboundChatPacket;
 import com.nukkitx.protocol.bedrock.packet.TextPacket;
 import org.geysermc.geyser.session.GeyserSession;
+import org.geysermc.geyser.text.ChatColor;
 import org.geysermc.geyser.translator.protocol.PacketTranslator;
 import org.geysermc.geyser.translator.protocol.Translator;
 import org.geysermc.geyser.translator.text.MessageTranslator;
@@ -44,6 +45,18 @@ public class BedrockTextTranslator extends PacketTranslator<TextPacket> {
             return;
         }
 
+        if (message.indexOf(ChatColor.ESCAPE) != -1) {
+            // Filter out all escape characters - Java doesn't let you type these
+            StringBuilder builder = new StringBuilder();
+            for (int i = 0; i < message.length(); i++) {
+                char c = message.charAt(i);
+                if (c != ChatColor.ESCAPE) {
+                    builder.append(c);
+                }
+            }
+            message = builder.toString();
+        }
+
         if (MessageTranslator.isTooLong(message, session)) {
             return;
         }