use strict;
my $i = 0;
my $compiled_at = scalar localtime time;

sub {
  my ($this, $con) = @_;

  my $login = $con->param_type
    ('login', qr{^\w{4,12}$ }x
     , 'Login name is alphabet + number only, length 4 to 12');

  my $pass1 = $con->param('password')
    or die "Password is empty";

  if (my $err = $this->YATT->has_auth_failure($login, $pass1)) {
    die $err;
  }

  $this->entity_set_logged_in($login);

  if (my $url = $con->param('nx') || $con->referer) {
    $con->redirect($url);
  } else {
    print $con "OK(".$i++."; $compiled_at)\n";
  }
};