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#
# $Id: Arp.pm,v c57765ed0538 2024/10/28 15:05:03 gomor $
#
package Net::Libdnet::Arp;
use strict; use warnings;
use base qw(Class::Gomor::Array);
our @AS = qw(
_handle
);
__PACKAGE__->cgBuildIndices;
__PACKAGE__->cgBuildAccessorsScalar(\@AS);
use Net::Libdnet qw(:arp);
sub new {
my $self = shift->SUPER::new(@_);
my $handle = dnet_arp_open() or return;
$self->_handle($handle);
$self;
}
sub add {
my $self = shift;
my ($ip, $mac) = @_;
dnet_arp_add($self->_handle, {arp_pa => $ip, arp_ha => $mac});
}
sub delete {
my $self = shift;
my ($dst) = @_;
dnet_arp_delete($self->_handle, {arp_pa => $dst});
}
sub get {
my $self = shift,
my ($dst) = @_;
my $h = dnet_arp_get($self->_handle, {arp_pa => $dst});
return $h->{arp_ha} if $h;
undef;
}
sub loop {
my $self = shift;
my ($sub, $data) = @_;
dnet_arp_loop($self->_handle, $sub, $data || \'');
}
sub DESTROY {
my $self = shift;
defined($self->_handle) && dnet_arp_close($self->_handle);
}
1;
__END__
=head1 NAME
Net::Libdnet::Arp - high level API to access libdnet arp_* functions
=head1 SYNOPSIS
use Net::Libdnet::Arp;
my $h = Net::Libdnet::Arp->new;
my $mac = $h->get('10.0.0.1');
my $success = $h->add('10.0.0.1', '00:11:22:33:44:55');
my $success = $h->delete('10.0.0.1', '00:11:22:33:44:55');
my $data;
$h->loop(\&arp_print, \$data);
sub arp_print {
my ($e, $data) = @_;
printf("%s at %s\n", $e->{arp_pa}, $e->{arp_ha});
}
=head1 DESCRIPTION
This modules is a higher level abstraction for libdnet arp_* functions.
=head1 METHODS
=over 4
=item B<new> ()
Returns an object to access arp cache table on success, undef otherwise.
=item B<get> (scalar)
Returns the mac address of specified IP address, undef otherwise.
=item B<add> (scalar, scalar)
Adds an entry to arp cache table. Returns 1 on success, undef otherwise. First parameter is the IP address, second is the mac address.
=item B<delete> (scalar, scalar)
Deletes an entry from arp cache table. Returns 1 on success, undef otherwise. First parameter is the IP address, second is the mac address.
=item B<loop> (subref, [ scalarref ])
Calls the specified sub ref for each entry in the arp cache table. The second optional parameter is a scalar ref, to store state information (if any).
=back
=head1 AUTHOR
Patrice E<lt>GomoRE<gt> Auffret
=head1 COPYRIGHT AND LICENSE
You may distribute this module under the terms of the BSD license. See LICENSE file in the source distribution archive.
Copyright (c) 2008-2024, Patrice <GomoR> Auffret
=cut
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