From 2c4db1ce7c37528fb343d57841a6c3cddcd4a357 Mon Sep 17 00:00:00 2001
From: merlokk <807634+merlokk@users.noreply.github.com>
Date: Wed, 20 Feb 2019 19:37:30 +0200
Subject: [PATCH] check ATR length

---
 client/emv/cmdemv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/client/emv/cmdemv.c b/client/emv/cmdemv.c
index 9bb71de76..9728a32b7 100644
--- a/client/emv/cmdemv.c
+++ b/client/emv/cmdemv.c
@@ -1444,6 +1444,10 @@ int CmdEMVScan(const char *cmd) {
 		
 		smart_card_atr_t card;
 		smart_select(true, &card);
+		if (!card.atr_len) {
+			PrintAndLogEx(ERR, "Can't get ATR from a smart card.");
+			return 1;
+		}
 		
 		JsonSaveStr(root, "$.Card.Contact.Communication", "iso7816");
 		JsonSaveBufAsHex(root, "$.Card.Contact.ATR", (uint8_t *)card.atr, card.atr_len);