File Coverage

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

Criterion	Covered	Total	%
statement	25	31	80.6
branch	4	8	50.0
condition	1	3	33.3
subroutine	7	9	77.7
pod	5	5	100.0
total	42	56	75.0

#
# $Id: Option.pm,v bc01789674fd 2019/05/23 05:51:45 gomor $
#
package Net::Frame::Layer::ICMPv6::Option;
use strict; use warnings;

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

our @AS = qw(
   type
   length
   value
);
__PACKAGE__->cgBuildIndices;
__PACKAGE__->cgBuildAccessorsScalar(\@AS);

use Net::Frame::Layer::ICMPv6 qw(:consts);

sub new {
   shift->SUPER::new(
      type   => 0,
      length => 0,
      value  => '',
      @_,
   );
}

sub getLength {
   my $self = shift;

   return length($self->value) + 2;
}

sub pack {
   my $self = shift;

   $self->raw($self->SUPER::pack('CCa*',
      $self->type, $self->length, $self->value,
   )) or return;

   return $self->raw;
}

sub unpack {
   my $self = shift;

   my ($type, $length, $tail) = $self->SUPER::unpack('CC a*', $self->raw)
      or return;

   $self->type($type);
   $self->length($length);

   # Dirty hack. Some systems does not set the length correctly
   if ($type == NF_ICMPv6_OPTION_TARGETLINKLAYERADDRESS
   ||  $type == NF_ICMPv6_OPTION_SOURCELINKLAYERADDRESS) {
      $length = 6;
   }

   my ($value, $payload) = $self->SUPER::unpack("a$length a*", $tail)
      or return;

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

   return $self;
}

sub print {
   my $self = shift;

   my $l = $self->layer;
   sprintf "$l: type:%02x  length:%02x  value:%s",
      $self->type, $self->length, CORE::unpack('H*', $self->value);
}

1;

__END__