Пример #1
0
/* Get the last host in a CIDR block */
CIDR *
cidr_addr_hostmax(const CIDR *addr)
{
	CIDR *toret;

	toret = cidr_addr_broadcast(addr);
	if(toret==NULL)
		return(NULL); /* Preserve errno */
	
	toret->addr[15] &= 0xfe;

	return(toret);
}
Пример #2
0
/* Is it an IPv4 broadcast address? */
int is_ipv4_broadcast(CIDR *address)
{
    int result;

    /* The very concept of broadcast address doesn't apply to
       IPv6 and point-to-point or /32 IPv4 */
    if( (cidr_get_proto(address) == CIDR_IPV4) &&
        (cidr_equals(address, cidr_addr_broadcast(address)) == 0 ) &&
        (cidr_get_pflen(address) < 31) )
    {
        result = RESULT_SUCCESS;
    }
    else
    {
        result = RESULT_FAILURE;
    }

    return(result);
}