Function link_ntoa

tools/compat/linkaddr.c:123–155

static const 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);
}