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utils.h
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utils.h
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/*
* Copyright (c) 2013,2019 Sergey Ryazanov <ryazanov.s.a@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef UTILS_H
#define UTILS_H
#include <stdint.h>
static inline int macaddr_is_valid(const uint8_t *mac)
{
const uint16_t *m = (uint16_t *)mac;
if ((m[0] | m[1] | m[2]) == 0) /* Reject empty */
return 0;
if (mac[0] & 0x3) /* Reject broadcast and local */
return 0;
return 1;
}
int macaddr_parse(const char *str, uint8_t *out);
void hexdump_print(const void *buf, int len);
#endif /* UTILS_H */