From fe708ba0ebc3903820968d8580f0614a4d35edd9 Mon Sep 17 00:00:00 2001
From: FlorianMichael <60033407+FlorianMichael@users.noreply.github.com>
Date: Sun, 7 Apr 2024 19:58:44 +0200
Subject: [PATCH] Fix chat command handling

---
 .../Protocol1_20_3To1_20_5.java                    | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/Protocol1_20_3To1_20_5.java b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/Protocol1_20_3To1_20_5.java
index 94d952c6..63ecef13 100644
--- a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/Protocol1_20_3To1_20_5.java
+++ b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/Protocol1_20_3To1_20_5.java
@@ -122,7 +122,19 @@ public final class Protocol1_20_3To1_20_5 extends BackwardsProtocol<ClientboundP
             wrapper.write(Type.BOOLEAN, wrapper.user().get(SecureChatStorage.class).enforcesSecureChat());
         });
 
-        registerServerbound(ServerboundPackets1_20_3.CHAT_COMMAND, ServerboundPackets1_20_5.CHAT_COMMAND_SIGNED);
+        registerServerbound(ServerboundPackets1_20_3.CHAT_COMMAND, ServerboundPackets1_20_5.CHAT_COMMAND_SIGNED, wrapper -> {
+            final String command = wrapper.passthrough(Type.STRING); // Command
+            wrapper.passthrough(Type.LONG); // Timestamp
+            wrapper.passthrough(Type.LONG); // Salt
+            final int signatures = wrapper.passthrough(Type.VAR_INT); // Signatures
+            if (signatures == 0) {
+                wrapper.cancel();
+
+                final PacketWrapper chatCommand = wrapper.create(ServerboundPackets1_20_5.CHAT_COMMAND);
+                chatCommand.write(Type.STRING, command);
+                chatCommand.sendToServer(Protocol1_20_3To1_20_5.class);
+            }
+        });
 
         registerClientbound(State.LOGIN, ClientboundLoginPackets.COOKIE_REQUEST.getId(), -1, wrapper -> handleCookieRequest(wrapper, ServerboundLoginPackets.COOKIE_RESPONSE));
         cancelClientbound(ClientboundConfigurationPackets1_20_5.RESET_CHAT); // Old clients already reset chat when entering the configuration phase