# # Mail::SPF::Mech::PTR # SPF record "ptr" mechanism class. # # (C) 2005-2008 Julian Mehnle <julian@mehnle.net> # 2005 Shevek <cpan@anarres.org> # $Id: PTR.pm 50 2008-08-17 21:28:15Z Julian Mehnle $ # ############################################################################## package Mail::SPF::Mech::PTR; =head1 NAME Mail::SPF::Mech::PTR - SPF record C<ptr> mechanism class =cut use warnings; use strict; use base 'Mail::SPF::SenderIPAddrMech'; use Mail::SPF::Util; use constant TRUE => (0 == 0); use constant FALSE => not TRUE; use constant name => 'ptr'; use constant name_pattern => qr/${\name}/i; =head1 DESCRIPTION An object of class B<Mail::SPF::Mech::PTR> represents an SPF record mechanism of type C<ptr>. =head2 Constructors The following constructors are provided: =over =item B<new(%options)>: returns I<Mail::SPF::Mech::PTR> Creates a new SPF record C<ptr> mechanism object. %options is a list of key/value pairs representing any of the following options: =over =item B<qualifier> =item B<domain_spec> See L<Mail::SPF::Mech/new>. =back =item B<new_from_string($text, %options)>: returns I<Mail::SPF::Mech::PTR>; throws I<Mail::SPF::ENothingToParse>, I<Mail::SPF::EInvalidMech> Creates a new SPF record C<ptr> mechanism object by parsing the string and any options given. =back =head2 Class methods The following class methods are provided: =over =item B<default_qualifier> =item B<qualifier_pattern> See L<Mail::SPF::Mech/Class methods>. =item B<name>: returns I<string> Returns B<'ptr'>. =item B<name_pattern>: returns I<Regexp> Returns a regular expression that matches a mechanism name of B<'ptr'>. =back =head2 Instance methods The following instance methods are provided: =over =cut sub parse_params { my ($self) = @_; $self->parse_domain_spec(); return; } =item B<text> =item B<qualifier> =item B<params> =cut sub params { my ($self) = @_; return defined($self->{domain_spec}) ? ':' . $self->{domain_spec} : undef; } =item B<stringify> See L<Mail::SPF::Mech/Instance methods>. =item B<domain_spec>: returns I<Mail::SPF::MacroString> Returns the C<domain-spec> parameter of the mechanism. =cut # Make read-only accessor: __PACKAGE__->make_accessor('domain_spec', TRUE); =item B<match($server, $request)>: returns I<boolean> Checks whether the mechanism's target domain name, or a sub-domain thereof, is a "valid" domain name for the given request's IP address (see L<Mail::SPF::Request/ip_address>), and returns B<true> if it does, or B<false> otherwise. See L<Mail::SPF::Util/valid_domain_for_ip_address> for how domains are validated. See RFC 4408, 5.5, for the description of an equivalent algorithm. =cut sub match { my ($self, $server, $request) = @_; $server->count_dns_interactive_term($request); return Mail::SPF::Util->valid_domain_for_ip_address( $server, $request, $request->ip_address, $self->domain($server, $request)) ? TRUE : FALSE; } =back =head1 SEE ALSO L<Mail::SPF>, L<Mail::SPF::Record>, L<Mail::SPF::Term>, L<Mail::SPF::Mech> L<http://www.ietf.org/rfc/rfc4408.txt> 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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