accounts/api/components/ReCaptcha/Validator.php

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<?php
namespace api\components\ReCaptcha;
use common\helpers\Error as E;
use GuzzleHttp\ClientInterface;
use GuzzleHttp\Exception\ConnectException;
use GuzzleHttp\Exception\ServerException;
use Psr\Http\Message\ResponseInterface;
use Yii;
use yii\base\Exception;
use yii\di\Instance;
class Validator extends \yii\validators\Validator {
private const SITE_VERIFY_URL = 'https://www.google.com/recaptcha/api/siteverify';
private const REPEAT_LIMIT = 3;
private const REPEAT_TIMEOUT = 1;
public $skipOnEmpty = false;
public $message = E::CAPTCHA_INVALID;
public $requiredMessage = E::CAPTCHA_REQUIRED;
/**
* @var Component|string
*/
public $component = 'reCaptcha';
private $client;
public function __construct(ClientInterface $client, array $config = []) {
parent::__construct($config);
$this->client = $client;
}
public function init() {
parent::init();
$this->component = Instance::ensure($this->component, Component::class);
}
/**
* @inheritdoc
*/
protected function validateValue($value) {
if (empty($value)) {
return [$this->requiredMessage, []];
}
$repeats = 0;
do {
$isSuccess = true;
try {
$response = $this->performRequest($value);
} catch (ConnectException | ServerException $e) {
if (++$repeats >= self::REPEAT_LIMIT) {
throw $e;
}
$isSuccess = false;
sleep(self::REPEAT_TIMEOUT);
}
} while (!$isSuccess);
/** @noinspection PhpUndefinedVariableInspection */
$data = json_decode($response->getBody(), true);
if (!isset($data['success'])) {
throw new Exception('Invalid recaptcha verify response.');
}
if (!$data['success']) {
return [$this->message, []];
}
return null;
}
/**
* @param string $value
* @throws \GuzzleHttp\Exception\GuzzleException
* @return ResponseInterface
*/
protected function performRequest(string $value): ResponseInterface {
return $this->client->request('POST', self::SITE_VERIFY_URL, [
'form_params' => [
'secret' => $this->component->secret,
'response' => $value,
'remoteip' => Yii::$app->getRequest()->getUserIP(),
],
]);
}
}