package Sisimai::Reason::VirusDetected;
use feature ':5.10';
use strict;
use warnings;

sub text  { 'virusdetected' }
sub description { 'Email rejected due to a virus scanner on a destination host' }
sub match {
    # Try to match that the given text and regular expressions
    # @param    [String] argv1  String to be matched with regular expressions
    # @return   [Integer]       0: Did not match
    #                           1: Matched
    # @since v4.22.0
    my $class = shift;
    my $argv1 = shift // return undef;
    my $regex = qr{(?:
         it[ ]has[ ]a[ ]potentially[ ]executable[ ]attachment
        |the[ ]message[ ]was[ ]rejected[ ]because[ ]it[ ]contains[ ]prohibited[ ]virus[ ]or[ ]spam[ ]content
        |this[ ]form[ ]of[ ]attachment[ ]has[ ]been[ ]used[ ]by[ ]recent[ ]viruses[ ]or[ ]other[ ]malware
        |your[ ]message[ ]was[ ]infected[ ]with[ ]a[ ]virus
        )
    }x;

    return 1 if $argv1 =~ $regex;
    return 0;
}

sub true {
    # The bounce reason is security error or not
    # @param    [Sisimai::Data] argvs   Object to be detected the reason
    # @return   [Integer]               1: virus detected
    #                                   0: virus was not detected
    # @since v4.22.0
    # @see http://www.ietf.org/rfc/rfc2822.txt
    return undef;
}

1;
__END__

=encoding utf-8

=head1 NAME

Sisimai::Reason::VirusDetected - Bounce reason is C<virusdetected> or not.

=head1 SYNOPSIS

    use Sisimai::Reason::VirusDetected;
    print Sisimai::Reason::VirusDetected->match('5.7.1 Email not accept');   # 1

=head1 DESCRIPTION

Sisimai::Reason::VirusDetected checks the bounce reason is C<virusdetected> or
not. This class is called only Sisimai::Reason class.

This is an error that any virus or trojan horse detected in the message by a
virus scanner program at a destination mail server. This reason has been divided
from C<securityerror> at Sisimai 4.22.0.

    Your message was infected with a virus. You should download a virus
    scanner and check your computer for viruses.

    Sender:    <sironeko@libsisimai.org>
    Recipient: <kijitora@example.jp>

=head1 CLASS METHODS

=head2 C<B<text()>>

C<text()> returns string: C<virusdetected>.

    print Sisimai::Reason::VirusDetected->text;  # virusdetected

=head2 C<B<match(I<string>)>>

C<match()> returns 1 if the argument matched with patterns defined in this class.

    my $v = 'Your message was infected with a virus. ...';
    print Sisimai::Reason::VirusDetected->match($v);    # 1

=head2 C<B<true(I<Sisimai::Data>)>>

C<true()> returns 1 if the bounce reason is C<virusdetected>. The argument must
be Sisimai::Data object and this method is called only from Sisimai::Reason class.

=head1 AUTHOR

azumakuniyuki

=head1 COPYRIGHT

Copyright (C) 2017 azumakuniyuki, All rights reserved.

=head1 LICENSE

This software is distributed under The BSD 2-Clause License.

=cut
