/usr/share/perl5/Mail/SPF/v2/Record.pm is in libmail-spf-perl 2.9.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Mail::SPF::v2::Record
# Sender ID ("spf2.0") record class.
#
# (C) 2005-2012 Julian Mehnle <julian@mehnle.net>
# 2005 Shevek <cpan@anarres.org>
# $Id: Record.pm 57 2012-01-30 08:15:31Z julian $
#
##############################################################################
package Mail::SPF::v2::Record;
=head1 NAME
Mail::SPF::v2::Record - Sender ID ("spf2.0") record class
=cut
use warnings;
use strict;
use base 'Mail::SPF::Record';
use constant TRUE => (0 == 0);
use constant FALSE => not TRUE;
use constant mech_classes => {
all => 'Mail::SPF::Mech::All',
ip4 => 'Mail::SPF::Mech::IP4',
ip6 => 'Mail::SPF::Mech::IP6',
a => 'Mail::SPF::Mech::A',
mx => 'Mail::SPF::Mech::MX',
ptr => 'Mail::SPF::Mech::PTR',
'exists' => 'Mail::SPF::Mech::Exists',
include => 'Mail::SPF::Mech::Include'
};
use constant mod_classes => {
redirect => 'Mail::SPF::Mod::Redirect',
'exp' => 'Mail::SPF::Mod::Exp'
};
eval("require $_")
foreach values(%{mech_classes()}), values(%{mod_classes()});
use constant valid_scope => qr/^(?: mfrom | pra )$/x;
use constant version_tag_pattern => qr{
spf(2\.0)
/
( (?: mfrom | pra ) (?: , (?: mfrom | pra ) )* )
(?= \x20 | $ )
}ix;
=head1 SYNOPSIS
See L<Mail::SPF::Record>.
=head1 DESCRIPTION
An object of class B<Mail::SPF::v2::Record> represents a B<Sender ID>
(C<spf2.0>) record.
=head2 Constructors
The following constructors are provided:
=over
=item B<new(%options)>: returns I<Mail::SPF::v2::Record>
Creates a new Sender ID ("spf2.0") record object.
%options is a list of key/value pairs representing any of the following
options:
=over
=item B<text>
=item B<terms>
=item B<global_mods>
See L<Mail::SPF::Record/new>.
=item B<scopes>
I<Required>. See L<Mail::SPF::Record/new>. The B<'mfrom'> and B<'pra'> scopes
are supported. There is no default.
=back
=cut
sub new {
my ($self, %options) = @_;
$self = $self->SUPER::new(%options);
if (not defined($self->{parse_text})) {
# No parsing is intended, so scopes should have been specified:
my $scopes = $self->{scopes} || [];
@$scopes > 0
or throw Mail::SPF::EInvalidScope('No scopes for spf2.0 record');
foreach my $scope (@$scopes) {
$scope =~ $self->valid_scope
or throw Mail::SPF::EInvalidScope("Invalid scope '$scope' for spf2.0 record");
}
}
return $self;
}
=item B<new_from_string($text, %options)>: returns I<Mail::SPF::v2::Record>;
throws I<Mail::SPF::ENothingToParse>, I<Mail::SPF::EInvalidRecordVersion>,
I<Mail::SPF::ESyntaxError>
Creates a new Sender ID ("spf2.0") record object by parsing the string and
any options given.
=back
=head2 Class methods
The following class methods are provided:
=over
=item B<version_tag_pattern>: returns I<Regexp>
Returns a regular expression that matches a version tag of B<'spf2.0/'> plus a
comma-separated list of any of the B<'mfrom'> and B<'pra'> scopes. The
following are valid version tags:
spf2.0/mfrom
spf2.0/pra
spf2.0/mfrom,pra
spf2.0/pra,mfrom
=item B<default_qualifier>
=item B<results_by_qualifier>
See L<Mail::SPF::Record/Class methods>.
=back
=head2 Instance methods
The following instance methods are provided:
=over
=cut
sub parse_version_tag {
my ($self) = @_;
if ($self->{parse_text} =~ s/^${\$self->version_tag_pattern}(?:\x20+|$)//) {
my $scopes = $self->{scopes} = [ split(/,/, $2) ];
@$scopes > 0
or throw Mail::SPF::EInvalidScope('No scopes for spf2.0 record');
foreach my $scope (@$scopes) {
$scope =~ $self->valid_scope
or throw Mail::SPF::EInvalidScope("Invalid scope '$scope' for spf2.0 record");
}
}
else {
throw Mail::SPF::EInvalidRecordVersion(
"Not a 'spf2.0' record: '" . $self->text . "'");
}
return;
}
=item B<text>
=item B<scopes>
=item B<terms>
=item B<global_mods>
=item B<global_mod>
=item B<stringify>
=item B<eval>
See L<Mail::SPF::Record/Instance methods>.
=item B<version_tag>: returns I<string>
Returns B<'spf2.0/'> plus a comma-separated list of the scopes of the record.
See L</version_tag_pattern> for a list of possible return values.
=cut
sub version_tag {
my ($self) = @_;
return 'spf2.0'
if not ref($self) # called as class method
or not defined($self->{scopes}) # no scopes parsed
or not @{$self->{scopes}}; # no scopes specified in record
return 'spf2.0/' . join(',', @{$self->{scopes}});
}
=back
=head1 SEE ALSO
L<Mail::SPF>, L<Mail::SPF::Record>, L<Mail::SPF::Term>, L<Mail::SPF::Mech>,
L<Mail::SPF::Mod>
L<http://tools.ietf.org/html/rfc4408>
For availability, support, and license information, see the README file
included with Mail::SPF.
=head1 AUTHORS
Julian Mehnle <julian@mehnle.net>, Shevek <cpan@anarres.org>
=cut
TRUE;
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