unsigned long idx; \
	int snprintf_ret; \
	TMPBUF = (unsigned char *) (x); \
	buf_user[0] = 0; \
	buf_user[2] = 0; \
	buf_user_p = buf_user; \
	buf_user_size = sizeof(buf_user); \
	for (idx = 0; idx < (y); idx++) { \
	for (idx = 0; idx < MIN((y), sizeof(buf_user)); idx++) { \
		if (buf_user_size <= 0) { \
			break; \
		}; \
		snprintf_ret = snprintf(buf_user_p, buf_user_size, ", %02x", TMPBUF[idx]); \
		if (snprintf_ret <= 0) { \
			break; \
		}; \

		cackey_pin_command = strdup(getenv("CACKEY_PIN_COMMAND"));
	}

	if (getenv("CACKEY_PIN_COMMAND_XONLY") != NULL && getenv("DISPLAY") != NULL) {
		cackey_pin_command = strdup(getenv("CACKEY_PIN_COMMAND_XONLY"));
	}

	if (strcmp(cackey_pin_command, "") == 0) {
	if (cackey_pin_command && strcmp(cackey_pin_command, "") == 0) {
		free(cackey_pin_command);
		cackey_pin_command = NULL;
	}

#ifdef CACKEY_READERS_INCLUDE_ONLY_DEFAULT
	cackey_readers_include_only = strdup(CACKEY_MACRO_DEFAULT_XSTR(CACKEY_READERS_INCLUDE_ONLY_DEFAULT));
#endif