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<?php |
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declare(strict_types=1); |
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/** |
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* balloon |
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* |
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* @copyright Copryright (c) 2012-2019 gyselroth GmbH (https://gyselroth.com) |
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* @license GPL-3.0 https://opensource.org/licenses/GPL-3.0 |
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*/ |
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namespace Balloon\App\Recaptcha\Hook; |
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use Balloon\App\Recaptcha\Exception; |
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use Balloon\Hook\AbstractHook; |
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use InvalidArgumentException; |
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use Micro\Auth\Adapter\None; |
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use Micro\Auth\Auth; |
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use Micro\Auth\Identity; |
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use MongoDB\Database; |
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use Psr\Log\LoggerInterface; |
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use ReCaptcha\ReCaptcha as CaptchaService; |
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class Recaptcha extends AbstractHook |
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{ |
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/** |
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* Logger. |
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* |
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* @var LoggerInterface |
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*/ |
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protected $logger; |
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/** |
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* Recaptcha. |
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* |
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* @var CaptchaService |
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*/ |
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protected $recaptcha; |
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/** |
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* Database. |
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* |
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* @var Database |
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*/ |
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protected $db; |
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/** |
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* Validate captcha. |
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* |
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* @var int |
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*/ |
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protected $recaptcha_threshold = 30; |
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/** |
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* Constructor. |
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*/ |
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public function __construct(LoggerInterface $logger, CaptchaService $recaptcha, Database $db, array $config = []) |
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{ |
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$this->logger = $logger; |
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$this->recaptcha = $recaptcha; |
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$this->db = $db; |
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$this->setOptions($config); |
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} |
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/** |
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* Set options. |
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*/ |
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public function setOptions(array $config = []) |
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{ |
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foreach ($config as $option => $value) { |
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switch ($option) { |
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case 'recaptcha_threshold': |
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$this->{$option} = (int) $value; |
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break; |
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case 'hostname': |
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$this->recaptcha->setExpectedHostname($value); |
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break; |
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default: |
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throw new InvalidArgumentException('unknown option '.$option.' given'); |
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} |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function postAuthentication(Auth $auth, ?Identity $identity = null): void |
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{ |
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$username = $_POST['username'] ?? $_SERVER['username'] ?? null; |
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if ($identity === null && $username !== null) { |
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$this->logger->info('detected unsuccessful authentication for ['.$username.'], increase failed_auth counter', [ |
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'category' => get_class($this), |
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]); |
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$this->db->user->updateOne([ |
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'username' => $username, |
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], [ |
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'$inc' => [ |
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'failed_auth' => 1, |
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], |
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]); |
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return; |
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} |
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if ($identity instanceof Identity && !($identity->getAdapter() instanceof None)) { |
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$this->logger->info('detected successful authentication for ['.$identity->getIdentifier().']', [ |
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'category' => get_class($this), |
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]); |
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$this->db->user->updateOne([ |
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'username' => $username, |
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], [ |
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'$set' => [ |
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'failed_auth' => 0, |
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], |
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]); |
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return; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function preAuthentication(Auth $auth): void |
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{ |
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$username = $_POST['username'] ?? $_SERVER['username'] ?? null; |
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if ($username === null) { |
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return; |
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} |
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$result = $this->db->user->findOne([ |
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'username' => $username, |
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'failed_auth' => [ |
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'$gte' => $this->recaptcha_threshold, |
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], |
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]); |
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if ($result !== null) { |
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$this->logger->info('max failed auth requests for user ['.$username.'] exceeded recaptcha threshold ['.$this->recaptcha_threshold.']', [ |
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'category' => get_class($this), |
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]); |
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if (!isset($_GET['g-recaptcha-response'])) { |
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throw new Exception\InvalidRecaptchaToken('valid recaptcha token `g-recaptcha-response` is required'); |
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} |
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$resp = $this->recaptcha->verify($_GET['g-recaptcha-response'], $_SERVER['REMOTE_ADDR']); |
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if ($resp->isSuccess()) { |
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$this->logger->info('recaptcha token validation for ['.$username.'] succeeded', [ |
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'category' => get_class($this), |
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]); |
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} else { |
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$this->logger->info('recaptcha token validation for ['.$username.'] failed', [ |
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'category' => get_class($this), |
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'errors' => $resp->getErrorCodes(), |
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]); |
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throw new Exception\InvalidRecaptchaToken('Valid recaptcha token `g-recaptcha-response` is required'); |
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} |
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} |
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} |
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} |
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gyselroth /
balloon
