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/* $OpenBSD: linkaddr.c,v 1.6 2015/09/10 08:55:03 mpi Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if_dl.h>
#include <string.h>
static char hexlist[] = "0123456789abcdef";
char *
link_ntoa(const struct sockaddr_dl *sdl)
{
static char obuf[64];
char *out = obuf;
int i;
u_char *in = (u_char *)LLADDR(sdl);
u_char *inlim = in + sdl->sdl_alen;
int firsttime = 1;
if (sdl->sdl_nlen) {
bcopy(sdl->sdl_data, obuf, sdl->sdl_nlen);
out += sdl->sdl_nlen;
if (sdl->sdl_alen)
*out++ = ':';
}
while (in < inlim) {
if (firsttime)
firsttime = 0;
else
*out++ = '.';
i = *in++;
if (i > 0xf) {
out[1] = hexlist[i & 0xf];
i >>= 4;
out[0] = hexlist[i];
out += 2;
} else
*out++ = hexlist[i];
}
*out = 0;
return (obuf);
}
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