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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Core\Controller;
use OC\Authentication\Login\LoginData;
use OC\Authentication\Login\WebAuthnChain;
use OC\Authentication\WebAuthn\Manager;
use OC\URLGenerator;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\Attribute\FrontpageRoute;
use OCP\AppFramework\Http\Attribute\PublicPage;
use OCP\AppFramework\Http\Attribute\UseSession;
use OCP\AppFramework\Http\JSONResponse;
use OCP\IRequest;
use OCP\ISession;
use OCP\Util;
use Psr\Log\LoggerInterface;
use Webauthn\PublicKeyCredentialRequestOptions;
class WebAuthnController extends Controller {
private const WEBAUTHN_LOGIN = 'webauthn_login';
private const WEBAUTHN_LOGIN_UID = 'webauthn_login_uid';
public function __construct(
string $appName,
IRequest $request,
private Manager $webAuthnManger,
private ISession $session,
private LoggerInterface $logger,
private WebAuthnChain $webAuthnChain,
private URLGenerator $urlGenerator,
) {
parent::__construct($appName, $request);
}
#[PublicPage]
#[UseSession]
#[FrontpageRoute(verb: 'POST', url: 'login/webauthn/start')]
public function startAuthentication(string $loginName): JSONResponse {
$this->logger->debug('Starting WebAuthn login');
$this->logger->debug('Converting login name to UID');
$uid = $loginName;
Util::emitHook(
'\OCA\Files_Sharing\API\Server2Server',
'preLoginNameUsedAsUserName',
['uid' => &$uid]
);
$this->logger->debug('Got UID: ' . $uid);
$publicKeyCredentialRequestOptions = $this->webAuthnManger->startAuthentication($uid, $this->request->getServerHost());
$this->session->set(self::WEBAUTHN_LOGIN, json_encode($publicKeyCredentialRequestOptions));
$this->session->set(self::WEBAUTHN_LOGIN_UID, $uid);
return new JSONResponse($publicKeyCredentialRequestOptions);
}
#[PublicPage]
#[UseSession]
#[FrontpageRoute(verb: 'POST', url: 'login/webauthn/finish')]
public function finishAuthentication(string $data): JSONResponse {
$this->logger->debug('Validating WebAuthn login');
if (!$this->session->exists(self::WEBAUTHN_LOGIN) || !$this->session->exists(self::WEBAUTHN_LOGIN_UID)) {
$this->logger->debug('Trying to finish WebAuthn login without session data');
return new JSONResponse([], Http::STATUS_BAD_REQUEST);
}
// Obtain the publicKeyCredentialOptions from when we started the registration
$publicKeyCredentialRequestOptions = PublicKeyCredentialRequestOptions::createFromString($this->session->get(self::WEBAUTHN_LOGIN));
$uid = $this->session->get(self::WEBAUTHN_LOGIN_UID);
$this->webAuthnManger->finishAuthentication($publicKeyCredentialRequestOptions, $data, $uid);
//TODO: add other parameters
$loginData = new LoginData(
$this->request,
$uid,
''
);
$this->webAuthnChain->process($loginData);
return new JSONResponse([
'defaultRedirectUrl' => $this->urlGenerator->linkToDefaultPageUrl(),
]);
}
}
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