LinkExternalProtocolsConstraintValidator.php in Drupal 9

Namespace

Drupal\link\Plugin\Validation\Constraint

File

core/modules/link/src/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidator.php

<?php

namespace Drupal\link\Plugin\Validation\Constraint;

use Drupal\Component\Utility\UrlHelper;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;

/**
 * Validates the LinkExternalProtocols constraint.
 */
class LinkExternalProtocolsConstraintValidator extends ConstraintValidator {

  /**
   * {@inheritdoc}
   */
  public function validate($value, Constraint $constraint) {
    if (isset($value)) {
      try {

        /** @var \Drupal\Core\Url $url */
        $url = $value
          ->getUrl();
      } catch (\InvalidArgumentException $e) {
        return;
      }

      // Disallow external URLs using untrusted protocols.
      if ($url
        ->isExternal() && !in_array(parse_url($url
        ->getUri(), PHP_URL_SCHEME), UrlHelper::getAllowedProtocols())) {
        $this->context
          ->addViolation($constraint->message, [
          '@uri' => $value->uri,
        ]);
      }
    }
  }

}

Classes

Name	Description
LinkExternalProtocolsConstraintValidator	Validates the LinkExternalProtocols constraint.