1/*
2 * Copyright (c) 2022 Yubico AB. All rights reserved.
3 * Use of this source code is governed by a BSD-style
4 * license that can be found in the LICENSE file.
5 * SPDX-License-Identifier: BSD-2-Clause
6 */
7
8#include <errno.h>
9#include <stdint.h>
10#include <stdlib.h>
11
12#include "fido.h"
13
14int
15fido_to_uint64(const char *str, int base, uint64_t *out)
16{
17	char *ep;
18	unsigned long long ull;
19
20	errno = 0;
21	ull = strtoull(str, &ep, base);
22	if (str == ep || *ep != '\0')
23		return -1;
24	else if (ull == ULLONG_MAX && errno == ERANGE)
25		return -1;
26	else if (ull > UINT64_MAX)
27		return -1;
28	*out = (uint64_t)ull;
29
30	return 0;
31}
32