#
# $Id: Hello.pm 73 2015-01-14 06:42:49Z gomor $
#
package Net::Frame::Layer::OSPF::Hello;
use strict; use warnings;
use Net::Frame::Layer qw(:consts :subs);
our @ISA = qw(Net::Frame::Layer);
our @AS = qw(
networkMask
helloInterval
options
routerPri
routerDeadInterval
designatedRouter
backupDesignatedRouter
lls
);
our @AA = qw(
neighborList
);
__PACKAGE__->cgBuildIndices;
__PACKAGE__->cgBuildAccessorsScalar(\@AS);
__PACKAGE__->cgBuildAccessorsArray (\@AA);
use Net::Frame::Layer::OSPF qw(:consts);
sub new {
shift->SUPER::new(
networkMask => '255.255.255.0',
helloInterval => 60,
options => 0,
routerPri => 0,
routerDeadInterval => 120,
designatedRouter => '0.0.0.0',
backupDesignatedRouter => '0.0.0.0',
neighborList => [],
@_,
);
}
sub getLength {
my $self = shift;
my $len = 20;
for ($self->neighborList) {
$len += 4;
}
$len;
}
sub pack {
my $self = shift;
my $raw = $self->SUPER::pack('a4nCCNa4a4',
inetAton($self->networkMask), $self->helloInterval, $self->options,
$self->routerPri, $self->routerDeadInterval,
inetAton($self->designatedRouter),
inetAton($self->backupDesignatedRouter),
) or return undef;
for ($self->neighborList) {
$raw .= $self->SUPER::pack('a4', inetAton($_)) or return undef;
}
$self->raw($raw);
}
sub unpack {
my $self = shift;
my ($netmask, $helloInt, $options, $pri, $deadInt, $desRouter, $backup,
$payload) = $self->SUPER::unpack('a4nCCNa4a4 a*', $self->raw)
or return undef;
$self->networkMask(inetNtoa($netmask));
$self->helloInterval($helloInt);
$self->options($options);
$self->routerPri($pri);
$self->routerDeadInterval($deadInt);
$self->designatedRouter(inetNtoa($desRouter));
$self->backupDesignatedRouter(inetNtoa($backup));
my @neighborList = ();
if ($payload) {
while ($payload) {
my ($neighbor, $tail) = $self->SUPER::unpack('a4 a*', $payload)
or return undef;
push @neighborList, inetNtoa($neighbor);
$payload = $tail;
}
}
$self->neighborList(\@neighborList);
$self->payload($payload);
$self;
}
sub print {
my $self = shift;
my $l = $self->layer;
my $buf = sprintf
"$l: networkMask:%s helloInterval:%d\n".
"$l: options:0x%02x routerPri:0x%02x routerDeadInterval:%d\n".
"$l: designatedRouter:%s backupDesignatedRouter:%s",
$self->networkMask,
$self->helloInterval,
$self->options,
$self->routerPri,
$self->routerDeadInterval,
$self->designatedRouter,
$self->backupDesignatedRouter,
;
for ($self->neighborList) {
$buf .= "\n$l: neighbor: $_";
}
if ($self->lls) {
$buf .= "\n".$self->lls->print;
}
$buf;
}
1;
__END__
=head1 NAME
Net::Frame::Layer::OSPF::Hello - OSPF Hello type object
=head1 SYNOPSIS
use Net::Frame::Layer::OSPF::Hello;
my $layer = Net::Frame::Layer::OSPF::Hello->new(
networkMask => '255.255.255.0',
helloInterval => 60,
options => 0,
routerPri => 0,
routerDeadInterval => 120,
designatedRouter => '0.0.0.0',
backupDesignatedRouter => '0.0.0.0',
neighborList => [],
);
$layer->pack;
print 'RAW: '.$layer->dump."\n";
# Read a raw layer
my $layer = Net::Frame::Layer::OSPF::Hello->new(raw => $raw);
print $layer->print."\n";
print 'PAYLOAD: '.unpack('H*', $layer->payload)."\n"
if $layer->payload;
=head1 DESCRIPTION
This modules implements the encoding and decoding of the OSPF Hello object.
See also B<Net::Frame::Layer> for other attributes and methods.
=head1 ATTRIBUTES
=over 4
=item B<networkMask>
=item B<helloInterval>
=item B<options>
=item B<routerPri>
=item B<routerDeadInterval>
=item B<designatedRouter>
=item B<backupDesignatedRouter>
=item B<lls>
Previous attributes set and get scalar values.
=item B<neighborList> ( [ B<IP address>, ... ] )
This attribute takes an array ref of IP addresses.
=back
The following are inherited attributes. See B<Net::Frame::Layer> for more information.
=over 4
=item B<raw>
=item B<payload>
=item B<nextLayer>
=back
=head1 METHODS
=over 4
=item B<new>
=item B<new> (hash)
Object constructor. You can pass attributes that will overwrite default ones. See B<SYNOPSIS> for default values.
=back
The following are inherited methods. Some of them may be overriden in this layer, and some others may not be meaningful in this layer. See B<Net::Frame::Layer> for more information.
=over 4
=item B<layer>
=item B<computeLengths>
=item B<computeChecksums>
=item B<pack>
=item B<unpack>
=item B<encapsulate>
=item B<getLength>
=item B<getPayloadLength>
=item B<print>
=item B<dump>
=back
=head1 CONSTANTS
No constants here.
=head1 SEE ALSO
L<Net::Frame::Layer::OSPF>, L<Net::Frame::Layer>
=head1 AUTHOR
Patrice E<lt>GomoRE<gt> Auffret
=head1 COPYRIGHT AND LICENSE
Copyright (c) 2006-2015, Patrice E<lt>GomoRE<gt> Auffret
You may distribute this module under the terms of the Artistic license.
See LICENSE.Artistic file in the source distribution archive.
=cut