NAME
dns_ip4_qualify - Qualification
SYNOPSIS
#include <dns.h>
dns_ip4_qualify(&out, &fqdn, &udn);
stralloc out = {0};
stralloc fqdn = {0};
stralloc udn = {0};
DESCRIPTION
dns_ip4_qualify feeds the name udn through qualification(5) and looks
up 4-byte IP addresses for the result. It puts the fully qualified
domain name into fqdn, puts the concatenation of the IP addresses into
out, and returns 0. If the domain does not exist in DNS, or has no IP
addresses, out will be empty.
If dns_ip4_qualify has trouble with the qualification(5), has trouble
with DNS, or runs out of memory, it returns -1, setting errno
appropriately. It may or may not change out and fqdn.
SEE ALSO
dns_domain(3), dns_ip4(3), dns_mx(3), dns_name4(3), dns_packet(3),
dns_random(3), dns_transmit(3), dns_txt(3)
http://cr.yp.to/djbdns/blurb/library.html
dns_ip4_qualify(3)