NAME

Mail::Qmail::Filter::Util - utility functions for Mail::Qmail::Filter modules

SYNOPSIS

    use Mail::Qmail::Filter::Util qw(addresses_to_hash match_address);
    use Mo qw(coerce default);

    has addresses => coerce => \&addresses_to_hash;

    sub filter {
        ...
        if ( match_address( $self->addresses, $address ) ) {
            ...
        }
        ...
    }

DESCRIPTION

This module is not a filter itself, but provides utility functions for other filters, possibly your own.

EXPORTABLE FUNCTIONS

addresses_to_hash

Takes a single e-mail address or domain name as string or an array of such strings and turns it into a data structure you can later pass to "match_address". Returns a reference to this data structure.

match_address

Expects two arguments:

1. the reference returned by "addresses_to_hash"

2. an e-mail address (as a string)

Will return a true value if the e-mail address given is one of the addresses you had given to "addresses_to_hash" or if its domain name is one of the domain names you had given to "addresses_to_hash".

Everything will be compared case-insensitively, because domain names are not case-sensitive anyway, and presumably no-one uses case-sensitive localparts.

split_address

Expects a domain name or an e-mail address as its only argument.

Returns two values:

1. the local-part of the e-mail address, or undef for domains

2. the domain part, converted to lowercase

SEE ALSO

Mail::Qmail::Filter

LICENSE AND COPYRIGHT

Copyright 2019 Martin Sluka.

This module is free software; you can redistribute it and/or modify it under the terms of the the Artistic License (2.0). You may obtain a copy of the full license at:

http://www.perlfoundation.org/artistic_license_2_0

Any use, modification, and distribution of the Standard or Modified Versions is governed by this Artistic License. By using, modifying or distributing the Package, you accept this license. Do not use, modify, or distribute the Package, if you do not accept this license.

If your Modified Version has been derived from a Modified Version made by someone other than you, you are nevertheless required to ensure that your Modified Version complies with the requirements of this license.

This license does not grant you the right to use any trademark, service mark, tradename, or logo of the Copyright Holder.

This license includes the non-exclusive, worldwide, free-of-charge patent license to make, have made, use, offer to sell, sell, import and otherwise transfer the Package with respect to any patent claims licensable by the Copyright Holder that are necessarily infringed by the Package. If you institute patent litigation (including a cross-claim or counterclaim) against any party alleging that the Package constitutes direct or contributory patent infringement, then this Artistic License to you shall terminate on the date that such litigation is filed.

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