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<?php |
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namespace Sludio\HelperBundle\Captcha\Validator\Constraint; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\Validator\Constraint; |
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use Symfony\Component\Validator\ConstraintValidator; |
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use Symfony\Component\Validator\Exception\ValidatorException; |
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class IsTrueValidator extends ConstraintValidator |
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{ |
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/** |
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* The reCAPTCHA server URL's |
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*/ |
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const RECAPTCHA_VERIFY_SERVER = "https://www.google.com"; |
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/** |
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* Recaptcha Private Key |
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* |
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* @var String |
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*/ |
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protected $secretKey; |
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/** |
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* Request Stack |
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* |
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* @var Request |
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*/ |
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protected $request; |
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/** |
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* HTTP Proxy informations |
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* @var Array |
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*/ |
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protected $httpProxy; |
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/** |
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* Enable serverside host check. |
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* |
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* @var Boolean |
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*/ |
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protected $verifyHost; |
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/** |
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* Construct. |
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* |
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* @param String $secretKey |
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* @param Array $httpProxy |
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* @param Boolean $verifyHost |
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*/ |
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public function __construct($secretKey, array $httpProxy, $verifyHost) |
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{ |
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$this->secretKey = $secretKey; |
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$this->request = Request::createFromGlobals(); |
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$this->httpProxy = $httpProxy; |
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$this->verifyHost = $verifyHost; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function validate($value, Constraint $constraint) |
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{ |
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// define variable for recaptcha check answer. |
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$remoteip = $this->request->getClientIp(); |
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$response = $this->request->get("g-recaptcha-response"); |
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$isValid = $this->checkAnswer($this->secretKey, $remoteip, $response); |
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if ($isValid["success"] !== true) { |
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$this->context->addViolation($constraint->message); |
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// Perform server side hostname check |
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} elseif ($this->verifyHost && $isValid["hostname"] !== $this->request->getHost()) { |
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$this->context->addViolation($constraint->invalidHostMessage); |
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} |
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} |
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/** |
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* Calls an HTTP POST function to verify if the user's guess was correct. |
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* |
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* @param String $secretKey |
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* @param String $remoteip |
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* @param String $response |
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* |
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* @throws ValidatorException When missing remote ip |
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* |
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* @return Boolean |
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*/ |
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private function checkAnswer($secretKey, $remoteip, $response) |
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{ |
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if ($remoteip == null || $remoteip == "") { |
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throw new ValidatorException("sludio_helper.captcha.recaptcha.validator.remote_ip"); |
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} |
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// discard spam submissions |
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if ($response == null || strlen($response) == 0) { |
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return false; |
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} |
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$response = $this->httpGet(self::RECAPTCHA_VERIFY_SERVER, "/recaptcha/api/siteverify", [ |
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"secret" => $secretKey, |
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"remoteip" => $remoteip, |
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"response" => $response, |
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]); |
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return json_decode($response, true); |
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} |
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/** |
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* Submits an HTTP POST to a reCAPTCHA server. |
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* |
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* @param String $host |
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* @param String $path |
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* @param Array $data |
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* |
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* @return Array response |
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*/ |
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private function httpGet($host, $path, $data) |
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{ |
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$host = sprintf("%s%s?%s", $host, $path, http_build_query($data, null, "&")); |
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$context = $this->getResourceContext(); |
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return file_get_contents($host, false, $context); |
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} |
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/** |
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* Resource context. |
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* |
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* @return resource context for HTTP Proxy. |
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*/ |
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private function getResourceContext() |
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{ |
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if (null === $this->httpProxy["host"] || null === $this->httpProxy["port"]) { |
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return null; |
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} |
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$options = []; |
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$protocols = [ |
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"http", |
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"https", |
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]; |
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foreach ($protocols as $protocol) { |
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$options[$protocol] = [ |
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"method" => "GET", |
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"proxy" => sprintf("tcp://%s:%s", $this->httpProxy["host"], $this->httpProxy["port"]), |
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"request_fulluri" => true, |
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]; |
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if (null !== $this->httpProxy["auth"]) { |
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$options[$protocol]["header"] = sprintf("Proxy-Authorization: Basic %s", base64_encode($this->httpProxy["auth"])); |
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} |
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} |
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return stream_context_create($options); |
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} |
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} |
ozo2003 /
HelperBundle
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