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     if ($accept) {
        # store log entry in DB
     }
   }

=head1 DESCRIPTION

This is a Moose class which provides a filter which implements the
BuzzSaw::Filter role. It is used to filter log entries and find those
associated with the cosign daemon. An event will be accepted for
storage if it is related to a login being registered. When an event is
accepted by the Cosign filter module it returns C<cosign> and C<auth>
and C<auth_success> tags.

The BuzzSaw project provides a suite of tools for processing log file
entries. Entries in files are parsed and filtered into a set of events
of interest which are stored in a database. A report generation
framework is also available which makes it easy to generate regular
reports regarding the events discovered.

=head1 ATTRIBUTES

=over

=item name

The short name of the module. The default is to use the final part of
the Perl module name lower-cased (e.g. the name of
C<BuzzSaw::Filter::Cosign> is C<cosign>).

=back

=head1 SUBROUTINES/METHODS

=over

=item ( $accept, @tags ) = $filter->check(\%event)

This method checks for log entries which are associated with Cosign
daemon logins which have been accepted.

=back

=head1 DEPENDENCIES

This module is powered by L<Moose>. This module implements the
L<BuzzSaw::Filter> Moose role.

=head1 SEE ALSO

L<BuzzSaw>, L<BuzzSaw::Parser>

=head1 PLATFORMS

This is the list of platforms on which we have tested this
software. We expect this software to work on any Unix-like platform
which is supported by Perl.

ScientificLinux6

=head1 BUGS AND LIMITATIONS

This module only accepts Cosign registration entries which refer to
IPv4 addresses.

Please report any bugs or problems (or praise!) to bugs@lcfg.org,
feedback and patches are also always very welcome.

=head1 AUTHOR

    Stephen Quinney <squinney@inf.ed.ac.uk>

=head1 LICENSE AND COPYRIGHT

    Copyright (C) 2012 University of Edinburgh. All rights reserved.

This library is free software; you can redistribute it and/or modify
it under the terms of the GPL, version 2 or later.

=cut