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Courier::Filter::Module::Header.3pm

NAME

Courier::Filter::Module::Header - Message header filter module for the Courier::Filter framework

SYNOPSIS

     use Courier::Filter::Module::Header;
 
     my $module = Courier::Filter::Module::Header->new(
         fields      => \%patterns_by_field_name,
         response    => $response_text,
 
         logger      => $logger,
         inverse     => 0,
         trusting    => 0,
         testing     => 0,
         debugging   => 0
     );
 
     my $filter = Courier::Filter->new(
         ...
         modules     => [ $module ],
         ...
     );
 
 

DESCRIPTION

This class is a filter module class for use with Courier::Filter. It matches a message if one of the message's header fields matches the configured criteria.

Constructor

The following constructor is provided:

new(%options): returns Courier::Filter::Module::Header

Creates a new Header filter module.

%options is a list of key/value pairs representing any of the following options:

fields

Required. A reference to a hash containing the message header field names and patterns (as key/value pairs) that messages are to be matched against. Field names are matched case-insensitively. Patterns may either be simple strings (for exact, case-sensitive matches) or regular expression objects created by the "qr//" operator (for inexact, partial matches).

So for instance, to match any message from the ``debian-devel'' mailing list with the subject containing something about 'duelling banjoes', you could set the "fields" option as follows:

     fields      => {
        'list-id'    => '<debian-devel.lists.debian.org>',
         subject     => qr/duell?ing\s+banjoe?s?/i
     }
 
 

response

A string that is to be returned literally as the match result in case of a match. Defaults to ``Prohibited header value detected: <field>: <value>''.

All options of the Courier::Filter::Module constructor are also supported. Please see ``new()'' in Courier::Filter::Module for their descriptions.

Instance methods

See ``Instance methods'' in Courier::Filter::Module for a description of the provided instance methods.

SEE ALSO

Courier::Filter::Module::Envelope, Courier::Filter::Module, Courier::Filter::Overview.

For AVAILABILITY, SUPPORT, and LICENSE information, see Courier::Filter::Overview.

AUTHOR

Julian Mehnle <julian@mehnle.net>