[avahi] how to determine if an AvahiAddress is the local machine's?

[Charles Schmidt]

-

As far as I can tell, there is no API for determining if a given
AvahiAddress refers to an IP that the local machine has.  Something like
avahi_address_is_localhost() or avahi_address_is_this_host() would be
quite nice for filtering through resolve responses to get only those
that aren't services from the local machine.

Right now, I'm using:

static gboolean
is_local_address (const gchar *address)
{
/* address here was got with avahi_address_snprint() */
	static struct hostent *he = NULL;
	struct in_addr addr;
	gint i;
	gint ret;
	gchar hostname[255 + 6];
	
	ret = gethostname (hostname, 255);
	if (ret) {
		return FALSE;
	}

	strncat (hostname, ".local", 6);
	he = gethostbyname (hostname);

	if (he == NULL) {
		return FALSE;
	}

	for (i = 0; he->h_addr_list[i]; i++) {
		memcpy (&addr, he->h_addr_list[0], sizeof (struct in_addr));

		if (strcmp (inet_ntoa (addr), address) == 0) {
			return TRUE;
		}
	}

	return FALSE;
}

But I'm not sure that this is a) the best way or b) something that will
work in all situations (multiple interfaces).  Can anyone suggest a
better way to do this?

-charlie