#
# $Id: TypeAddresses.pm 2002 2015-02-15 16:50:35Z gomor $
#
package Net::Packet::CDP::TypeAddresses;
use strict;
use warnings;
require Net::Packet::CDP::Type;
our @ISA = qw(Net::Packet::CDP::Type);
use Net::Packet::Consts qw(:cdp);
require Net::Packet::CDP::Address;
our @AS = qw(
numberOfAddresses
);
our @AA = qw(
addresses
);
__PACKAGE__->cgBuildIndices;
__PACKAGE__->cgBuildAccessorsScalar(\@AS);
__PACKAGE__->cgBuildAccessorsArray (\@AA);
#no strict 'vars';
sub new {
shift->SUPER::new(
type => NP_CDP_TYPE_ADDRESSES,
length => 8,
numberOfAddresses => 0,
addresses => [],
@_,
);
}
sub pack {
my $self = shift;
$self->raw($self->SUPER::pack('nn',
$self->type,
$self->length,
)) or return undef;
my $raw = $self->raw;
$raw .= $_->pack for $self->addresses;
$self->raw($raw);
1;
}
sub unpack {
my $self = shift;
my ($type, $length, $numberOfAddresses, $tail) =
$self->SUPER::unpack('nnNa*', $self->raw)
or return undef;
$self->type($type);
$self->length($length);
$self->numberOfAddresses($numberOfAddresses);
my @addressList;
for my $n (1..$numberOfAddresses) {
my $a = Net::Packet::CDP::Address->new(raw => $tail);
push @addressList, $a;
$tail = $a->payload;
}
$self->addresses(\@addressList);
$self->payload($tail);
1;
}
sub print {
my $self = shift;
my $buf = '';
my $i = $self->is;
my $l = $self->layer;
$buf .= sprintf "$l: $i: type:0x%04x length:%d numberOfAddresses:%d",
$self->type, $self->length, $self->numberOfAddresses;
for ($self->addresses) {
$buf .= "\n".$_->print;
}
$buf;
}
1;
__END__
=head1 NAME
Net::Packet::CDP::TypeAddresses - Cisco Discovery Protocol Addresses extension header
=head1 SYNOPSIS
use Net::Packet::Consts qw(:cdp);
require Net::Packet::CDP::TypeAddresses;
# Build a layer
my $layer = Net::Packet::CDP::TypeAddresses->new(
type => NP_CDP_TYPE_ADDRESSES,
length => 8,
numberOfAddresses => 0,
addresses => [],
);
$layer->pack;
print 'RAW: '.unpack('H*', $layer->raw)."\n";
# Read a raw layer
my $layer = Net::Packet::CDP::TypeAddresses->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 Cisco Discovery Protocol Addresses type extension header.
=head1 ATTRIBUTES
=over 4
=item B<type> - 16 bits
=item B<length> - 16 bits
=item B<numberOfAddresses> - 32 bits
=item B<addresses> - variable length
The last one contains an arrayref of B<Net::Packet::CDP::Address> objects.
=back
=head1 METHODS
=over 4
=item B<new>
Object constructor. You can pass attributes that will overwrite default ones. Default values:
type: NP_CDP_TYPE_ADDRESSES
length: 8
numberOfAddresses: 0
addresses: []
=item B<pack>
Packs all attributes into a raw format, in order to inject to network. Returns 1 on success, undef otherwise.
=item B<unpack>
Unpacks raw data from network and stores attributes into the object. Returns 1 on success, undef otherwise.
=back
=head1 CONSTANTS
See B<Net::Packet::CDP> CONSTANTS.
=over 4
=back
=head1 AUTHOR
Patrice E<lt>GomoRE<gt> Auffret
=head1 COPYRIGHT AND LICENSE
Copyright (c) 2004-2015, 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.
=head1 RELATED MODULES
L<NetPacket>, L<Net::RawIP>, L<Net::RawSock>
=cut