From eb318bc381b8ba58940a15cd0f964af648545940 Mon Sep 17 00:00:00 2001
From: Pol Henarejos <pol.henarejos@cttc.es>
Date: Fri, 23 Sep 2022 18:13:01 +0200
Subject: [PATCH] Return error on bad CLA.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
---
 src/fido/fido.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/fido/fido.c b/src/fido/fido.c
index 1f478fe..61ec800 100644
--- a/src/fido/fido.c
+++ b/src/fido/fido.c
@@ -307,7 +307,7 @@ bool check_user_presence() {
     if (user_present_time_limit == 0 || user_present_time_limit+TRANSPORT_TIME_LIMIT < board_millis()) {
         if (wait_button_pressed() == true) //timeout
             return false;
-        user_present_time_limit = board_millis();
+        //user_present_time_limit = board_millis();
     }
 #endif
     return true;
@@ -336,6 +336,8 @@ static const cmd_t cmds[] = {
 };
 
 int fido_process_apdu() {
+    if (CLA(apdu) != 0x00)
+        return SW_CLA_NOT_SUPPORTED();
     for (const cmd_t *cmd = cmds; cmd->ins != 0x00; cmd++)
     {
         if (cmd->ins == INS(apdu)) {