Start with webauthn

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
Signed-off-by: npmbuildbot[bot] <npmbuildbot[bot]@users.noreply.github.com>

1 files changed, 117 insertions, 0 deletions

diff --git a/core/Controller/WebAuthnController.php b/core/Controller/WebAuthnController.php
new file mode 100644
index 00000000000..0b98a58c1eb
--- /dev/null
+++ b/core/Controller/WebAuthnController.php
@@ -0,0 +1,117 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2020, Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\Core\Controller;
+
+use OC\Authentication\Login\LoginData;
+use OC\Authentication\Login\WebAuthnChain;
+use OC\Authentication\WebAuthn\Manager;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\JSONResponse;
+use OCP\ILogger;
+use OCP\IRequest;
+use OCP\ISession;
+use OCP\Util;
+use Webauthn\PublicKeyCredentialRequestOptions;
+
+class WebAuthnController extends Controller {
+
+	private const WEBAUTHN_LOGIN = 'webauthn_login';
+	private const WEBAUTHN_LOGIN_UID = 'webauthn_login_uid';
+
+	/** @var Manager */
+	private $webAuthnManger;
+
+	/** @var ISession */
+	private $session;
+
+	/** @var ILogger */
+	private $logger;
+
+	/** @var WebAuthnChain */
+	private $webAuthnChain;
+
+	public function __construct($appName, IRequest $request, Manager $webAuthnManger, ISession $session, ILogger $logger, WebAuthnChain $webAuthnChain) {
+		parent::__construct($appName, $request);
+
+		$this->webAuthnManger = $webAuthnManger;
+		$this->session = $session;
+		$this->logger = $logger;
+		$this->webAuthnChain = $webAuthnChain;
+	}
+
+	/**
+	 * @NoAdminRequired
+	 * @PublicPage
+	 * @UseSession
+	 */
+	public function startAuthentication(string $loginName): JSONResponse {
+		$this->logger->debug('Starting WebAuthn login');
+
+		$this->logger->debug('Converting login name to UID');
+		$uid = $loginName;
+		Util::emitHook(
+			'\OCA\Files_Sharing\API\Server2Server',
+			'preLoginNameUsedAsUserName',
+			array('uid' => &$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);
+	}
+
+	/**
+	 * @NoAdminRequired
+	 * @PublicPage
+	 * @UseSession
+	 */
+	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([]);
+	}
+}