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 13 int fido_to_uint64(const char * str,int base,uint64_t * out)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 } 31