/usr/share/perl5/Net/Frame/Layer/ICMPv6/Option.pm is in libnet-frame-layer-icmpv6-perl 1.09-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# $Id: Option.pm 45 2014-04-09 06:32:08Z 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) {
$length = 6;
}
my ($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__
=head1 NAME
Net::Frame::Layer::ICMPv6::Option - ICMPv6 Option object
=head1 SYNOPSIS
use Net::Frame::Layer::ICMPv6::Option;
my $layer = Net::Frame::Layer::ICMPv6::Option->new(
type => 0,
length => 0,
value => '',
);
$layer->pack;
print 'RAW: '.$layer->dump."\n";
# Read a raw layer
my $layer = Net::Frame::Layer::ICMPv6::Option->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 ICMPv6 Options.
See also B<Net::Frame::Layer> for other attributes and methods.
=head1 ATTRIBUTES
=over 4
=item B<type>
The type of ICMPv6 option.
=item B<length>
The length of ICMPv6 option (a number of bytes), including B<type> and B<length> fields.
=item B<value>
The value.
=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 overridden 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::ICMPv6>, L<Net::Frame::Layer>
=head1 AUTHOR
Patrice E<lt>GomoRE<gt> Auffret
=head1 COPYRIGHT AND LICENSE
Copyright (c) 2006-2014, 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
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