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<?php |
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namespace EmanueleMinotto\SafeBrowsingBundle\Validator\Constraints; |
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use Doctrine\Common\Cache\ArrayCache; |
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use Doctrine\Common\Cache\Cache; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\ClientInterface; |
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use GuzzleHttp\Exception\GuzzleException; |
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use Symfony\Component\Validator\Constraint; |
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use Symfony\Component\Validator\ConstraintValidator; |
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/** |
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* Validator used for URL safety evaluation. |
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* |
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* @author Emanuele Minotto <[email protected]> |
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*/ |
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class SafeValidator extends ConstraintValidator |
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{ |
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/** |
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* Google safe browsing endpoint. |
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* |
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* @var string |
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*/ |
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const ENDPOINT = 'https://sb-ssl.google.com/safebrowsing/api/lookup'; |
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/** |
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* HTTP client. |
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* |
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* @var ClientInterface |
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*/ |
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private $httpClient; |
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/** |
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* Validator cache. |
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* |
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* @var Cache |
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*/ |
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private $cache; |
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/** |
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* Request configurations. |
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* |
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* @var array |
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*/ |
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private $configs = []; |
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/** |
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* Constructor with attributes initialization. |
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*/ |
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public function __construct(array $configs = []) |
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{ |
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$this->cache = new ArrayCache(); |
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$this->configs = $configs; |
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$this->httpClient = new Client(); |
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} |
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/** |
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* Sets the HTTP client. |
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* |
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* @param ClientInterface $httpClient The HTTP client. |
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*/ |
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public function setHttpClient(ClientInterface $httpClient) |
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{ |
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$this->httpClient = $httpClient; |
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} |
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/** |
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* Sets the Validator cache. |
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* |
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* @param Cache $cache The caching implementation. |
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*/ |
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public function setCache(Cache $cache) |
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{ |
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$this->cache = $cache; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function validate($value, Constraint $constraint) |
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{ |
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if (!$value) { |
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return; |
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} |
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$response = $this->getResponse($value); |
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if (false === $response || 'ok' === $response) { |
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return; |
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} |
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$this->context->addViolation($constraint->message, [ |
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'%response%' => $response, |
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]); |
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} |
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/** |
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* Gets service output and cache it. |
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* |
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* @param string $url URL or domain. |
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* |
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* @return string|false |
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*/ |
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private function getResponse($url) |
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{ |
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if ($this->cache->contains($url)) { |
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return $this->cache->fetch($url); |
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} |
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$serviceOutput = $this->getHttpClientOutput($url); |
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$this->cache->save($url, $serviceOutput); |
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return $serviceOutput; |
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} |
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/** |
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* Gets service output. |
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* |
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* @param string $url URL or domain. |
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* |
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* @return string|false |
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*/ |
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private function getHttpClientOutput($url) |
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{ |
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try { |
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$response = $this->httpClient->request('GET', self::ENDPOINT, [ |
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'query' => array_merge($this->configs, ['url' => $url]), |
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]); |
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return trim($response->getBody()) ?: false; |
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} catch (GuzzleException $exception) { |
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return false; |
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} |
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} |
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} |
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EmanueleMinotto /
SafeBrowsingBundle
