#-*- perl -*-
#
# Copyright (C) 2004,2007,2008 Ken'ichi Fukamachi
# All rights reserved. This program is free software; you can
# redistribute it and/or modify it under the same terms as Perl itself.
#
# $FML: bogofilter.pm,v 1.5 2007/01/16 11:24:27 fukachan Exp $
#
package FML::Filter::External::bogofilter;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK $AUTOLOAD);
use Carp;
=head1 NAME
FML::Filter::External::bogofilter - bogofilter interface.
=head1 SYNOPSIS
use FML::Filter::External::bogofilter;
my $ext_filter = new FML::Filter::External::bogofilter;
$ext_filter->process($curproc, $msg);
=head1 DESCRIPTION
This module checks the specified message $msg by bogofilter.
=head1 METHODS
=head2 new()
constructor.
=cut
# Descriptions: constructor.
# Arguments: OBJ($self)
# Side Effects: none
# Return Value: OBJ
sub new
{
my ($self) = @_;
my ($type) = ref($self) || $self;
my $me = {};
return bless $me, $type;
}
=head2 process($curproc, $msg)
top level dispather.
It checks if the current message $msg looks a spam by bogofilter.
=cut
# Descriptions: check if the current message looks a spam.
# Arguments: OBJ($self) OBJ($curproc) OBJ($msg)
# Side Effects: none
# Return Value: NUM(1 or 0) (1 if spam)
sub process
{
my ($self, $curproc, $msg) = @_;
my $config = $curproc->config();
my $program = $config->{ path_bogofilter } || '';
my $opts = $config->{ article_spam_filter_bogofilter_options } || '';
if ($program) {
if (-x $program) {
my $_program = sprintf("%s %s", $program, $opts);
return $self->_check($curproc, $msg, $_program);
}
else {
$curproc->logerror("$program not exists");
}
}
else {
$curproc->logerror("path_bogofilter undefined");
}
return 0;
}
# Descriptions: check the message through $program.
# Arguments: OBJ($self) OBJ($curproc) OBJ($msg) STR($program)
# Side Effects: none
# Return Value: NUM(1 or 0) (1 if spam)
sub _check
{
my ($self, $curproc, $msg, $program) = @_;
my $opts = "-e";
use FileHandle;
my $wh = new FileHandle "| $program $opts ";
if (defined $wh) {
$wh->autoflush(1);
$msg->print($wh);
$wh->close();
if ($?) {
my $code = $?;
my $r = "SPAM determined by bogofilter";
$curproc->logerror($r);
$curproc->filter_state_spam_checker_set_error($r);
return 1;
}
else {
$curproc->log("not SPAM");
}
}
return 0;
}
=head1 CODING STYLE
See C on fml coding style guide.
=head1 AUTHOR
Ken'ichi Fukamachi
=head1 COPYRIGHT
Copyright (C) 2004,2007,2008 Ken'ichi Fukamachi
All rights reserved. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
=head1 HISTORY
FML::Filter::External::bogofilter appeared in fml8 mailing list driver package.
See C for more details.
=cut
1;