™.. Mail::DKIM::SignerPolicy - Online Linux Manual Page
Section : 3
Updated : 2009-07-10
Source : perl v5.10.1
Note : User Contributed Perl Documentation
NAMEMail::DKIM::SignerPolicy − determines signing parameters for a message
DESCRIPTIONA ‟signer policy” is an object, class, or function used by 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 Mail::DKIM::SignerPolicy class. The only method you need to implement is the apply() method. The apply() method takes as a parameter the 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",
);
ADVANCEDYou 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.
AUTHORJason Long, <jlong@messiah.edu>
COPYRIGHT AND LICENSECopyright (C) 2006−2007 by Messiah College 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. 0
Johanes Gumabo
Data Size : 8,513 byte
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