function OEmbedResourceConstraintValidator::validate

File

core/modules/media/src/Plugin/Validation/Constraint/OEmbedResourceConstraintValidator.php, line 76

Class

OEmbedResourceConstraintValidator

Validates oEmbed resource URLs.

Namespace

Code

public function validate($value, Constraint $constraint) {
    
    /** @var \Drupal\media\MediaInterface $media */
    $media = $value->getEntity();
    
    /** @var \Drupal\media\Plugin\media\Source\OEmbedInterface $source */
    $source = $media->getSource();
    if (!$source instanceof OEmbedInterface) {
        throw new \LogicException('Media source must implement ' . OEmbedInterface::class);
    }
    $url = $source->getSourceFieldValue($media);
    // The URL may be NULL if the source field is empty, which is invalid input.
    if (empty($url)) {
        $this->context
            ->addViolation($constraint->invalidResourceMessage);
        return;
    }
    // Ensure that the URL matches a provider.
    try {
        $provider = $this->urlResolver
            ->getProviderByUrl($url);
    } catch (ResourceException $e) {
        $this->handleException($e, $constraint->unknownProviderMessage);
        return;
    } catch (ProviderException $e) {
        $this->handleException($e, $constraint->providerErrorMessage);
        return;
    }
    // Ensure that the provider is allowed.
    if (!in_array($provider->getName(), $source->getProviders(), TRUE)) {
        $this->context
            ->addViolation($constraint->disallowedProviderMessage, [
            '@name' => $provider->getName(),
        ]);
        return;
    }
    // Verify that resource fetching works, because some URLs might match
    // the schemes but don't support oEmbed.
    try {
        $resource_url = $this->urlResolver
            ->getResourceUrl($url);
        $this->resourceFetcher
            ->fetchResource($resource_url);
    } catch (ResourceException $e) {
        $this->handleException($e, $constraint->invalidResourceMessage);
    }
}