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/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>.
*/
/*
* 2002-12-24 Nick Fedchik <nick@fedchik.org.ua>
* - initial uClibc port
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <netinet/ether.h>
#include <netinet/if_ether.h>
struct ether_addr *ether_aton_r(const char *asc, struct ether_addr *addr)
{
/* asc is "X:XX:XX:x:xx:xX" */
int cnt;
for (cnt = 0; cnt < 6; ++cnt) {
unsigned char number;
char ch = *asc++;
if (ch < 0x20)
return NULL;
/* | 0x20 is cheap tolower(), valid for letters/numbers only */
ch |= 0x20;
if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))
return NULL;
number = !(ch > '9') ? (ch - '0') : (ch - 'a' + 10);
ch = *asc++;
if ((cnt != 5 && ch != ':') /* not last group */
/* What standard says ASCII ether address representation
* may also finish with whitespace, not only NUL?
* We can get rid of isspace() otherwise */
|| (cnt == 5 && ch != '\0' /*&& !isspace(ch)*/)
) {
ch |= 0x20; /* cheap tolower() */
if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))
return NULL;
number = (number << 4) + (!(ch > '9') ? (ch - '0') : (ch - 'a' + 10));
if (cnt != 5) {
ch = *asc++;
if (ch != ':')
return NULL;
}
}
/* Store result. */
addr->ether_addr_octet[cnt] = number;
}
/* Looks like we allow garbage after last group?
* "1:2:3:4:5:66anything_at_all"? */
return addr;
}
libc_hidden_def(ether_aton_r)
struct ether_addr *ether_aton(const char *asc)
{
static struct ether_addr result;
return ether_aton_r(asc, &result);
}
char *ether_ntoa_r(const struct ether_addr *addr, char *buf)
{
sprintf(buf, "%x:%x:%x:%x:%x:%x",
addr->ether_addr_octet[0], addr->ether_addr_octet[1],
addr->ether_addr_octet[2], addr->ether_addr_octet[3],
addr->ether_addr_octet[4], addr->ether_addr_octet[5]);
return buf;
}
libc_hidden_def(ether_ntoa_r)
char *ether_ntoa(const struct ether_addr *addr)
{
static char asc[18];
return ether_ntoa_r(addr, asc);
}
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