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package Net::Prober::smtp;
$Net::Prober::smtp::VERSION = '0.17';
use strict;
use warnings;
use base 'Net::Prober::Probe::TCP';
sub args {
    return {
        host     => undef,
        port     => 25,
        timeout  => 30,
        ssl      => 0,
        username => undef,
        password => undef,
    };
}
sub probe {
    my ($self, $args) = @_;
    my ($host, $port, $timeout, $username, $password) =
        $self->parse_args($args, qw(host port timeout username password));
    my $t0 = $self->time_now();
    my $sock = $self->open_socket($args);
    if (! $sock) {
        return $self->probe_failed(
            reason => qq{Couldn't connect to smtp server $host:$port},
        );
    }
    chomp (my $esmtp_banner = $self->_get_reply($sock));
    if (! $esmtp_banner) {
        return $self->probe_failed(
            reason => qq{Couldn't get SMTP banner from $host:$port}
        );
    }
    if ($esmtp_banner !~ qr{^220 \s+ }x) {
        return $self->probe_failed(
            reason => qq{Incorrect SMTP banner from $host:$port? ($esmtp_banner)},
        );
    }
    $sock->send("QUIT\r\n");
    return $self->probe_ok(
        banner => $esmtp_banner,
        status => 220,
    );
}
sub _get_reply {
    my ($self, $sock) = @_;
    $sock->recv(my $reply, 256);
    return $reply;
}
1;
__END__
HideShow 25 lines of Pod
=pod
=encoding UTF-8
=head1 NAME
Net::Prober::smtp
=head1 VERSION
version 0.17
=head1 AUTHOR
Cosimo Streppone <cosimo@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2017 by Cosimo Streppone.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut