--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libcommon/apducmd.c	Sat Feb 20 00:48:22 2021 +0000
@@ -0,0 +1,26 @@
+/*
+ * This module implements a low-level debug command
+ * for users to manually send arbitrary APDUs.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include "simresp.h"
+
+cmd_apdu(argc, argv)
+	char **argv;
+{
+	u_char cmd[260];
+	int rc;
+	unsigned len;
+
+	rc = decode_hex_data_from_string(argv[1], cmd, 5, 260);
+	if (rc < 0)
+		return(rc);
+	len = rc;
+	rc = apdu_exchange(cmd, len);
+	if (rc < 0)
+		return(rc);
+	printf("%04X\n", sim_resp_sw);
+	return(0);
+}