GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/net/linkaddr.c Lines: 0 26 0.0 %
Date: 2017-11-13 Branches: 0 16 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: linkaddr.c,v 1.9 2016/12/08 03:20:50 millert Exp $ */
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/*-
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 * Copyright (c) 1990, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <string.h>
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static const char hexlist[] = "0123456789abcdef";
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char *
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link_ntoa(const struct sockaddr_dl *sdl)
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{
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	static char obuf[64];
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	char *out;
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	const u_char *in, *inlim;
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	int namelen, i, rem;
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	namelen = (sdl->sdl_nlen <= IFNAMSIZ) ? sdl->sdl_nlen : IFNAMSIZ;
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	out = obuf;
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	rem = sizeof(obuf);
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	if (namelen > 0) {
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		memcpy(out, sdl->sdl_data, namelen);
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		out += namelen;
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		rem -= namelen;
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		if (sdl->sdl_alen > 0) {
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			*out++ = ':';
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			rem--;
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		}
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	}
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	in = (const u_char *)sdl->sdl_data + sdl->sdl_nlen;
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	inlim = in + sdl->sdl_alen;
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	while (in < inlim && rem > 1) {
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		if (in != (const u_char *)sdl->sdl_data + sdl->sdl_nlen) {
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			*out++ = '.';
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			rem--;
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		}
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		i = *in++;
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		if (i > 0xf) {
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			if (rem < 3)
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				break;
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			*out++ = hexlist[i >> 4];
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			*out++ = hexlist[i & 0xf];
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			rem -= 2;
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		} else {
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			if (rem < 2)
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				break;
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			*out++ = hexlist[i];
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			rem--;
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		}
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	}
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	*out = 0;
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	return (obuf);
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}