File Coverage

blib/lib/Net/Frame/Layer/ICMPv6/TooBig.pm

Criterion	Covered	Total	%
statement	19	32	59.3
branch	2	12	16.6
condition			n/a
subroutine	6	9	66.6
pod	6	6	100.0
total	33	59	55.9

#
# Contributed by Vince http://www.vinsworld.com/
#
# $Id: TooBig.pm,v b9194b248a66 2017/10/06 16:26:50 gomor $
#
package Net::Frame::Layer::ICMPv6::TooBig;
use strict; use warnings;

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

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

sub new {
   my $self = shift->SUPER::new(
      mtu  => 0,
      @_,
   );

   return $self;
}

sub getLength { 4 }

sub pack {
   my $self = shift;

   $self->raw($self->SUPER::pack('N', $self->mtu))
      or return;

   return $self->raw;
}

sub unpack {
   my $self = shift;

   my ($mtu, $payload) = $self->SUPER::unpack('N a*', $self->raw)
      or return undef;

   $self->mtu($mtu);
   $self->payload($payload);

   return $self;
}

sub encapsulate {
   my $self = shift;

   return $self->nextLayer if $self->nextLayer;

   if ($self->payload) {
      my $pLen = length($self->payload);
      if ($pLen < 40) {
         $self->payload($self->payload.("\x00" x (40 - $pLen)));
      } elsif ($pLen > 1240) {
         $self->payload(substr $self->payload, 0, 1240);
      }
      return 'IPv6';
   }

   return NF_LAYER_NONE;
}

sub print {
   my $self = shift;

   my $l = $self->layer;
   return sprintf "$l: mtu:%d", $self->mtu;
}

1;

__END__