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# This code is part of Perl distribution Mail-Message version 4.03.
# The POD got stripped from this file by OODoc version 3.06.
# For contributors see file ChangeLog.
# This software is copyright (c) 2001-2026 by Mark Overmeer.
# This is free software; you can redistribute it and/or modify it under
# the same terms as the Perl 5 programming language system itself.
# SPDX-License-Identifier: Artistic-1.0-Perl OR GPL-1.0-or-later
package Mail::Message::Head::SpamGroup;{
our $VERSION = '4.03';
}
use parent 'Mail::Message::Head::FieldGroup';
use strict;
use warnings;
use Log::Report 'mail-message', import => [ qw/panic/ ];
#--------------------
my %fighters;
my $fighterfields; # one regexp for all fields
sub knownFighters() { keys %fighters }
sub fighter($;@)
{ my ($thing, $name) = (shift, shift);
if(@_)
{ my %args = @_;
defined $args{fields} or panic "requires fields";
defined $args{isspam} or panic "requires isspam";
$fighters{$name} = \%args;
my @fields = map $_->{fields}, values %fighters;
local $" = '|';
$fighterfields = qr/@fields/;
}
%{$fighters{$name}};
}
BEGIN
{ __PACKAGE__->fighter( SpamAssassin =>
fields => qr/^X-Spam-/i,
isspam => sub {
my ($sg, $head) = @_;
my $f = $head->get('X-Spam-Flag') || $head->get('X-Spam-Status');
$f ? $f =~ m/^yes\b/i : 0;
},
version => sub {
my ($sg, $head) = @_;
my $assin = $head->get('X-Spam-Checker-Version') or return ();
my ($software, $version) = $assin =~ m/^(.*)\s+(.*?)\s*$/;
($software, $version);
},
);
__PACKAGE__->fighter( 'Habeas-SWE' =>
fields => qr/^X-Habeas-SWE/i,
isspam => sub {
my ($sg, $head) = @_;
not $sg->habeasSweFieldsCorrect;
},
);
__PACKAGE__->fighter( MailScanner =>
fields => qr/^X-MailScanner/i,
isspam => sub {
my ($sg, $head) = @_;
my $subject = $head->get('subject');
$subject =~ m/^\{ (?:spam|virus)/xi;
},
);
}
sub from($@)
{ my ($class, $from, %args) = @_;
my $head = $from->isa('Mail::Message::Head') ? $from : $from->head;
my ($self, @detected);
my @types = defined $args{types} ? @{$args{types}} : $class->knownFighters;
foreach my $type (@types)
{ $self = $class->new(head => $head) unless defined $self;
$self->collectFields($type) or next;
my %fighter = $self->fighter($type);
my ($software, $version) = defined $fighter{version} ? $fighter{version}->($self, $head) : ();
$self->detected($type, $software, $version);
$self->spamDetected( $fighter{isspam}->($self, $head) );
push @detected, $self;
undef $self; # create a new one
}
@detected;
}
sub collectFields($)
{ my ($self, $set) = @_;
my %fighter = $self->fighter($set) or panic "no spam set $set";
my @names = map $_->name, $self->head->grepNames($fighter{fields});
$self->addFields(@names) if @names;
@names;
}
sub isSpamGroupFieldName($) { $_[1] =~ $fighterfields }
my @habeas_lines = (
'winter into spring', 'brightly anticipated', 'like Habeas SWE (tm)',
'Copyright 2002 Habeas (tm)',
'Sender Warranted Email (SWE) (tm). The sender of this',
'email in exchange for a license for this Habeas',
'warrant mark warrants that this is a Habeas Compliant',
'Message (HCM) and not spam. Please report use of this',
'mark in spam to <http://www.habeas.com/report/>.',
);
sub habeasSweFieldsCorrect(;$)
{ my $self;
if(@_ > 1)
{ my ($class, $thing) = @_;
my $head = $thing->isa('Mail::Message::Head') ? $thing : $thing->head;
$self = $head->spamGroups('Habeas-SWE') or return;
}
else
{ $self = shift;
my $type = $self->type;
defined $type && $type eq 'Habeas-SWE' or return;
}
my $head = $self->head;
$self->fields == @habeas_lines or return;
for(my $nr=1; $nr <= $#habeas_lines; $nr++)
{ my $f = $head->get("X-Habeas-SWE-$nr") or return;
$f->unfoldedBody eq $habeas_lines[$nr-1] or return;
}
1;
}
sub spamDetected(;$)
{ my $self = shift;
@_? ($self->{MMFS_spam} = shift) : $self->{MMFS_spam};
}
1;
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