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Name	Size	Permission
ARC	[ DIR ]	drwxr-xr-x
Algorithm	[ DIR ]	drwxr-xr-x
Canonicalization	[ DIR ]	drwxr-xr-x
AuthorDomainPolicy.pm	8.12 KB	-rw-r--r--
Common.pm	3.95 KB	-rw-r--r--
DNS.pm	7 KB	-rw-r--r--
DkPolicy.pm	6.95 KB	-rw-r--r--
DkSignature.pm	9.22 KB	-rw-r--r--
DkimPolicy.pm	7.5 KB	-rw-r--r--
Key.pm	1.79 KB	-rw-r--r--
KeyValueList.pm	5.04 KB	-rw-r--r--
MessageParser.pm	2.94 KB	-rw-r--r--
Policy.pm	6.27 KB	-rw-r--r--
PrivateKey.pm	4.11 KB	-rw-r--r--
PublicKey.pm	11.55 KB	-rw-r--r--
Signature.pm	22.13 KB	-rw-r--r--
Signer.pm	21.71 KB	-rw-r--r--
SignerPolicy.pm	2.81 KB	-rw-r--r--
TextWrap.pm	7.74 KB	-rw-r--r--
Verifier.pm	24.03 KB	-rw-r--r--

Code Editor : SignerPolicy.pm

#!/usr/bin/perl

# Copyright 2005-2006 Messiah College. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
#
# Written by Jason Long <jlong@messiah.edu>

use strict;
use warnings;

package Mail::DKIM::SignerPolicy;

__END__

=head1 NAME

Mail::DKIM::SignerPolicy - determines signing parameters for a message

=head1 DESCRIPTION

A "signer policy" is an object, class, or function used by
L<Mail::DKIM::Signer> to determine what signatures to add to the
current message. To take advantage of signer policies, create your
own Perl class that extends the L<Mail::DKIM::SignerPolicy> class.
The only method you need to implement is the apply() method.

The apply() method takes as a parameter the L<Mail::DKIM::Signer> object.
Using this object, it can determine some properties of the message (e.g.
what the From: address or Sender: address is). Then it sets various
signer properties as desired. The apply() method should
return a nonzero value if the message should be signed. If a false value
is returned, then the message is "skipped" (i.e. not signed).

Here is an example of a policy that always returns the same values:

package MySignerPolicy;
  use base 'Mail::DKIM::SignerPolicy';

sub apply
  {
      my $self = shift;
      my $signer = shift;
  
      $signer->algorithm('rsa-sha1');
      $signer->method('relaxed');
      $signer->domain('example.org');
      $signer->selector('selector1');
      $signer->key_file('private.key');
  
      return 1;
  }

To use this policy, simply specify the name of the class as the Policy
parameter...

my $dkim = Mail::DKIM::Signer->new(
                  Policy => 'MySignerPolicy',
             );

=head1 ADVANCED

You can also have the policy actually build the signature for the Signer
to use. To do this, call the signer's add_signature() method from within
your apply() callback. E.g.,

sub apply
  {
      my $self = shift;
      my $signer = shift;
  
      $signer->add_signature(
              new Mail::DKIM::Signature(
                  Algorithm => $signer->algorithm,
                  Method => $signer->method,
                  Headers => $signer->headers,
                  Domain => $signer->domain,
                  Selector => $signer->selector,
              ));
      return;
  }

Again, if you do not want any signatures, return zero or undef. If you
use add_signature() to create a signature, the default signature will
not be created, even if you return nonzero.

=head1 AUTHOR

Jason Long, E<lt>jlong@messiah.eduE<gt>

=head1 COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.6 or,
at your option, any later version of Perl 5 you may have available.

=cut

${this.title}

Code Editor : SignerPolicy.pm