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

sub text  { 'norelaying' }
sub description { 'Email rejected with error message "Relaying Denied"' }
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 v4.0.0
    my $class = shift;
    my $argv1 = shift // return undef;

    state $index = [
        'as a relay',
        'insecure mail relay',
        'is not permitted to relay through this server without authentication',
        'mail server requires authentication when attempting to send to a non-local e-mail address',    # MailEnable
        'not a gateway',
        'not allowed to relay through this machine',
        'not an open relay, so get lost',
        'not local host',
        'relay access denied',
        'relay denied',
        'relaying mail to ',
        'relay not permitted',
        'relaying denied',  # Sendmail
        "that domain isn't in my list of allowed rcpthost",
        'this system is not configured to relay mail',
        'unable to relay for',
        "we don't handle mail for",
    ];
    return 1 if grep { rindex($argv1, $_) > -1 } @$index;
    return 0;
}

sub true {
    # Whether the message is rejected by 'Relaying denied'
    # @param    [Sisimai::Data] argvs   Object to be detected the reason
    # @return   [Integer]               1: Rejected for "relaying denied"
    #                                   0: is not
    # @since v4.0.0
    # @see http://www.ietf.org/rfc/rfc2822.txt
    my $class = shift;
    my $argvs = shift // return undef;

    if( my $r = $argvs->reason // '' ) {
        # Do not overwrite the reason
        return 0 if( $r eq 'securityerror' || $r eq 'systemerror' || $r eq 'undefined' );
    } else {
        # Check the value of Diagnosic-Code: header with patterns
        return 1 if __PACKAGE__->match(lc $argvs->diagnosticcode);
    }
    return 0;
}

1;
__END__

=encoding utf-8

=head1 NAME

Sisimai::Reason::NoRelaying - Bounce reason is C<norelaying> or not.

=head1 SYNOPSIS

    use Sisimai::Reason::NoRelaying;
    print Sisimai::Reason::NoRelaying->match('Relaying denied');   # 1

=head1 DESCRIPTION

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

This is the error that SMTP connection rejected with error message
C<Relaying Denied>. This reason does not exist in any version of bounceHammer.

    ... while talking to mailin-01.mx.example.com.:
    >>> RCPT To:<kijitora@example.org>
    <<< 554 5.7.1 <kijitora@example.org>: Relay access denied
    554 5.0.0 Service unavailable

=head1 CLASS METHODS

=head2 C<B<text()>>

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

    print Sisimai::Reason::NoRelaying->text;  # norelaying

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

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

    print Sisimai::Reason::NoRelaying->match('Relaying denied');   # 1

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

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

=head1 AUTHOR

azumakuniyuki

=head1 COPYRIGHT

Copyright (C) 2014-2018,2021 azumakuniyuki, All rights reserved.

=head1 LICENSE

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

=cut
