use Net::hostnet;
You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your core functions.) Access these fields as variables named with a preceding h_. Thus, $host_obj->name() corresponds to $h_name if you import the fields. Array references are available as regular array variables, so for example @{ $host_obj->aliases() } would be simply @h_aliases.
The gethost() funtion is a simple front-end that forwards a numeric argument to gethostbyaddr() by way of Socket::inet_aton, and the rest to gethostbyname().
To access this functionality without the core overrides, pass the use an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the CORE:: pseudo-package.
use Net::hostent; use Socket;
@ARGV = ('netscape.com') unless @ARGV;
for $host ( @ARGV ) {
unless ($h = gethost($host)) { warn "$0: no such host: $host\n"; next; }
printf "\n%s is %s%s\n", $host, lc($h->name) eq lc($host) ? "" : "*really* ", $h->name;
print "\taliases are ", join(", ", @{$h->aliases}), "\n" if @{$h->aliases};
if ( @{$h->addr_list} > 1 ) { my $i; for $addr ( @{$h->addr_list} ) { printf "\taddr #%d is [%s]\n", $i++, inet_ntoa($addr); } } else { printf "\taddress is [%s]\n", inet_ntoa($h->addr); }
if ($h = gethostbyaddr($h->addr)) { if (lc($h->name) ne lc($host)) { printf "\tThat addr reverses to host %s!\n", $h->name; $host = $h->name; redo; } } }