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<?php |
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declare(strict_types=1); |
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namespace SilverStripe\TOTP; |
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use Exception; |
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use Psr\Log\LoggerInterface; |
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use RuntimeException; |
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use SilverStripe\Control\HTTPRequest; |
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use SilverStripe\Core\Injector\Injectable; |
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use SilverStripe\Core\Injector\Injector; |
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use SilverStripe\MFA\Exception\AuthenticationFailedException; |
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use SilverStripe\MFA\Method\Handler\VerifyHandlerInterface; |
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use SilverStripe\MFA\Model\RegisteredMethod; |
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use SilverStripe\MFA\Service\EncryptionAdapterInterface; |
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use SilverStripe\MFA\State\Result; |
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use SilverStripe\MFA\Store\StoreInterface; |
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/** |
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* Handles verification requests using a time-based one-time password (TOTP) with the silverstripe/mfa module. |
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*/ |
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class VerifyHandler implements VerifyHandlerInterface |
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{ |
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use Injectable; |
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use TOTPAware; |
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/** |
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* @var string[] |
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*/ |
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private static $dependencies = [ |
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'Logger' => '%$' . LoggerInterface::class . '.mfa', |
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]; |
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/** |
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* @var LoggerInterface |
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*/ |
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protected $logger; |
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public function start(StoreInterface $store, RegisteredMethod $method): array |
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{ |
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try { |
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$data = json_decode((string) $method->Data, true); |
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if (!$data || !isset($data['secret'])) { |
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throw new RuntimeException('TOTP secret is not available in the registered method data'); |
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} |
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$key = $this->getEncryptionKey(); |
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if (empty($key)) { |
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throw new AuthenticationFailedException( |
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'Please define a SS_MFA_SECRET_KEY environment variable for encryption' |
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); |
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} |
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// Decrypt the TOTP secret from the registered method |
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$secret = Injector::inst()->get(EncryptionAdapterInterface::class)->decrypt($data['secret'], $key); |
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$store->setState([ |
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'secret' => $secret, |
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]); |
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$enabled = true; |
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} catch (Exception $ex) { |
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// noop: encryption may not be defined, so method should be disabled rather than application error |
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$enabled = false; |
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$this->getLogger()->debug($ex->getMessage(), $ex->getTrace()); |
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} |
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return [ |
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'enabled' => $enabled, |
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'codeLength' => $method->getMethod()->getCodeLength(), |
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]; |
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} |
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public function verify(HTTPRequest $request, StoreInterface $store, RegisteredMethod $registeredMethod): Result |
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{ |
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$data = json_decode($request->getBody(), true); |
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if (!$this->getTotp($store)->verify($data['code'] ?? '')) { |
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return Result::create(false, _t(__CLASS__ . '.INVALID_CODE', 'Invalid code')); |
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} |
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return Result::create(); |
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} |
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public function getComponent(): string |
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{ |
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return 'TOTPVerify'; |
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} |
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/** |
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* @return LoggerInterface |
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*/ |
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public function getLogger(): ?LoggerInterface |
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{ |
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return $this->logger; |
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} |
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/** |
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* @param LoggerInterface $logger |
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* @return VerifyHandler |
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*/ |
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public function setLogger(LoggerInterface $logger): VerifyHandler |
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{ |
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$this->logger = $logger; |
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return $this; |
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} |
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} |
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