function LinkExternalProtocolsConstraintValidator::validate

File

core/modules/link/src/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidator.php, line 19

Class

LinkExternalProtocolsConstraintValidator

Validates the LinkExternalProtocols constraint.

Namespace

Code

public function validate($value, Constraint $constraint) : void {
  if (!$value instanceof LinkItemInterface) {
    throw new UnexpectedValueException($value, LinkItemInterface::class);
  }
  if ($value->isEmpty()) {
    return;
  }
  try {
    /** @var \Drupal\Core\Url $url */
    $url = $value->getUrl();
  } catch (\InvalidArgumentException) {
    return;
  }
  // Disallow external URLs using untrusted protocols.
  if ($url->isExternal() && !in_array(parse_url($url->getUri(), PHP_URL_SCHEME), UrlHelper::getAllowedProtocols())) {
    $this->context
      ->buildViolation($constraint->message, [
      '@uri' => $value->uri,
    ])
      ->atPath('uri')
      ->addViolation();
  }
}