1 /* 2 * Copyright (c) 2018 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 "fido.h" 8 9 int 10 fido_buf_read(const unsigned char **buf, size_t *len, void *dst, size_t count) 11 { 12 if (count > *len) 13 return (-1); 14 15 memcpy(dst, *buf, count); 16 *buf += count; 17 *len -= count; 18 19 return (0); 20 } 21 22 int 23 fido_buf_write(unsigned char **buf, size_t *len, const void *src, size_t count) 24 { 25 if (count > *len) 26 return (-1); 27 28 memcpy(*buf, src, count); 29 *buf += count; 30 *len -= count; 31 32 return (0); 33 } 34