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jcs's openbsd hax
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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 */
6
7#include <errno.h>
8#include <stdint.h>
9#include <stdlib.h>
10
11#include "fido.h"
12
13int
14fido_to_uint64(const char *str, int base, uint64_t *out)
15{
16 char *ep;
17 unsigned long long ull;
18
19 errno = 0;
20 ull = strtoull(str, &ep, base);
21 if (str == ep || *ep != '\0')
22 return -1;
23 else if (ull == ULLONG_MAX && errno == ERANGE)
24 return -1;
25 else if (ull > UINT64_MAX)
26 return -1;
27 *out = (uint64_t)ull;
28
29 return 0;
30}