/*
 * Copyright (c) 2022 Yubico AB. All rights reserved.
 * Use of this source code is governed by a BSD-style
 * license that can be found in the LICENSE file.
 */

#include <errno.h>
#include <stdint.h>
#include <stdlib.h>

#include "fido.h"

int
fido_to_uint64(const char *str, int base, uint64_t *out)
{
        char *ep;
        unsigned long long ull;

        errno = 0;
        ull = strtoull(str, &ep, base);
        if (str == ep || *ep != '\0')
                return -1;
        else if (ull == ULLONG_MAX && errno == ERANGE)
                return -1;
        else if (ull > UINT64_MAX)
                return -1;
        *out = (uint64_t)ull;

        return 0;
}