www.aleph1.co.uk Git - yaffs-website/blob - web/modules/contrib/media_entity_twitter/src/Plugin/Validation/Constraint/TweetVisibleConstraintValidator.php

   1 <?php
   2
   3 namespace Drupal\media_entity_twitter\Plugin\Validation\Constraint;
   4
   5 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
   6 use Drupal\media_entity\EmbedCodeValueTrait;
   7 use Drupal\media_entity_twitter\Plugin\MediaEntity\Type\Twitter;
   8 use GuzzleHttp\Client;
   9 use Symfony\Component\DependencyInjection\ContainerInterface;
  10 use Symfony\Component\Validator\Constraint;
  11 use Symfony\Component\Validator\ConstraintValidator;
  12
  13 /**
  14  * Validates the TweetVisible constraint.
  15  */
  16 class TweetVisibleConstraintValidator extends ConstraintValidator implements ContainerInjectionInterface {
  17
  18   use EmbedCodeValueTrait;
  19
  20   /**
  21    * The HTTP client to fetch the feed data with.
  22    *
  23    * @var \GuzzleHttp\Client
  24    */
  25   protected $httpClient;
  26
  27   /**
  28    * Constructs a new TweetVisibleConstraintValidator.
  29    *
  30    * @param \GuzzleHttp\Client $http_client
  31    *   The http client service.
  32    */
  33   public function __construct(Client $http_client) {
  34     $this->httpClient = $http_client;
  35   }
  36
  37   /**
  38    * {@inheritdoc}
  39    */
  40   public static function create(ContainerInterface $container) {
  41     return new static($container->get('http_client'));
  42   }
  43
  44   /**
  45    * {@inheritdoc}
  46    */
  47   public function validate($value, Constraint $constraint) {
  48     $value = $this->getEmbedCode($value);
  49     if (!isset($value)) {
  50       return;
  51     }
  52
  53     $matches = [];
  54
  55     foreach (Twitter::$validationRegexp as $pattern => $key) {
  56       if (preg_match($pattern, $value, $item_matches)) {
  57         $matches[] = $item_matches;
  58       }
  59     }
  60
  61     if (empty($matches[0][0])) {
  62       // If there are no matches the URL is not correct, so stop validation.
  63       return;
  64     }
  65
  66     // Fetch content from the given url.
  67     $response = $this->httpClient->get($matches[0][0], ['allow_redirects' => FALSE]);
  68
  69     if ($response->getStatusCode() == 302 && ($location = $response->getHeader('location'))) {
  70       $effective_url_parts = parse_url($location[0]);
  71       if (!empty($effective_url_parts) && isset($effective_url_parts['query']) && $effective_url_parts['query'] == 'protected_redirect=true') {
  72         $this->context->addViolation($constraint->message);
  73       }
  74     }
  75   }
  76
  77 }