File Coverage

blib/lib/Net/Frame/Layer/LLC/SNAP.pm

Criterion	Covered	Total	%
statement	27	35	77.1
branch	2	8	25.0
condition			n/a
subroutine	8	11	72.7
pod	6	6	100.0
total	43	60	71.6

#
# $Id: SNAP.pm 16 2010-06-03 12:46:53Z gomor $
#
package Net::Frame::Layer::LLC::SNAP;
use strict;
use warnings;

use Net::Frame::Layer qw(:consts);
our @ISA = qw(Net::Frame::Layer);

our @AS = qw(
   oui
   pid
);
__PACKAGE__->cgBuildIndices;
__PACKAGE__->cgBuildAccessorsScalar(\@AS);

no strict 'vars';

use Net::Frame::Layer::LLC qw(:consts);
require Bit::Vector;

sub new {
   shift->SUPER::new(
      oui => NF_LLC_SNAP_OUI_CISCO,
      pid => NF_LLC_SNAP_PID_CDP,
      @_,
   );
}

sub getLength { NF_LLC_SNAP_HDR_LEN }

sub pack {
   my $self = shift;

   my $oui = Bit::Vector->new_Dec(24, $self->[$__oui]);

   $self->[$__raw] = $self->SUPER::pack('B24n',
      $oui->to_Bin,
      $self->[$__pid],
   ) or return undef;

   $self->[$__raw];
}

sub unpack {
   my $self = shift;

   my ($oui, $pid, $payload) = $self->SUPER::unpack('B24n a*', $self->[$__raw])
      or return undef;

   my $v24 = Bit::Vector->new_Bin(24, $oui);
   $self->[$__oui] = $v24->to_Dec;
   $self->[$__pid] = $pid;

   $self->[$__payload] = $payload;

   $self;
}

sub encapsulate {
   my $self = shift;

   return $self->[$__nextLayer] if $self->[$__nextLayer];

   my $types = {
      NF_LLC_SNAP_PID_CDP() => 'CDP',
      NF_LLC_SNAP_PID_STP() => 'STP',
      NF_LLC_SNAP_PID_IPX() => 'IPX',
   };

   $types->{$self->[$__pid]} || NF_LAYER_UNKNOWN;
}

sub print {
   my $self = shift;

   my $l = $self->layer;
   sprintf "$l: oui:0x%06x  pid:0x%04x",
      $self->[$__oui], $self->[$__pid];
}

1;

__END__