function UserLoginForm::validateFinal

Checks if user was not authenticated, or if too many logins were attempted.

This validation function should always be the last one.

File

core/modules/user/src/Form/UserLoginForm.php, line 270

Class

UserLoginForm

Provides a user login form.

Namespace

Code

public function validateFinal(array &$form, FormStateInterface $form_state) {
  $flood_config = $this->config('user.flood');
  if (!$form_state->get('uid')) {
    // Always register an IP-based failed login event.
    $this->userFloodControl
      ->register('user.failed_login_ip', $flood_config->get('ip_window'));
    // Register a per-user failed login event.
    if ($flood_control_user_identifier = $form_state->get('flood_control_user_identifier')) {
      $this->userFloodControl
        ->register('user.failed_login_user', $flood_config->get('user_window'), $flood_control_user_identifier);
    }
    if ($flood_control_triggered = $form_state->get('flood_control_triggered')) {
      if ($flood_control_triggered == 'user') {
        $message = $this->formatPlural($flood_config->get('user_limit'), 'There has been more than one failed login attempt for this account. It is temporarily blocked. Try again later or <a href=":url">request a new password</a>.', 'There have been more than @count failed login attempts for this account. It is temporarily blocked. Try again later or <a href=":url">request a new password</a>.', [
          ':url' => Url::fromRoute('user.pass')->toString(),
        ]);
      }
      else {
        // We did not find a uid, so the limit is IP-based.
        $message = $this->t('Too many failed login attempts from your IP address. This IP address is temporarily blocked. Try again later or <a href=":url">request a new password</a>.', [
          ':url' => Url::fromRoute('user.pass')->toString(),
        ]);
      }
      $response = $this->bareHtmlPageRenderer
        ->renderBarePage([
        '#markup' => $message,
      ], $this->t('Login failed'), 'maintenance_page');
      $response->setStatusCode(403);
      $form_state->setResponse($response);
    }
    else {
      $form_state->setErrorByName('name', $this->t('Unrecognized username or password. <a href=":password">Forgot your password?</a>', [
        ':password' => Url::fromRoute('user.pass')->toString(),
      ]));
      $accounts = $this->userStorage
        ->loadByProperties([
        'name' => $form_state->getValue('name'),
      ]);
      if (!empty($accounts)) {
        $this->logger('user')
          ->notice('Login attempt failed for %user.', [
          '%user' => $form_state->getValue('name'),
        ]);
      }
      else {
        // If the username entered is not a valid user,
        // only store the IP address.
        $this->logger('user')
          ->notice('Login attempt failed from %ip.', [
          '%ip' => $this->getRequest()
            ->getClientIp(),
        ]);
      }
    }
  }
  elseif (!$form_state->get('flood_control_skip_clear') && ($flood_control_user_identifier = $form_state->get('flood_control_user_identifier'))) {
    // Clear past failures for this user so as not to block a user who might
    // log in and out more than once in an hour.
    $this->userFloodControl
      ->clear('user.failed_login_user', $flood_control_user_identifier);
  }
}