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<?php
/**
* @copyright Copyright (c) 2017, Sandro Lutz <sandro.lutz@temparus.ch>
* @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
* @author Christoph Wurst <christoph@owncloud.com>
* @author Joas Schilling <coding@schilljs.com>
* @author Julius Härtl <jus@bitgrid.net>
* @author justin-sleep <justin@quarterfull.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Sandro Lutz <sandro.lutz@temparus.ch>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Ujjwal Bhardwaj <ujjwalb1996@gmail.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Core\Controller;
use OC\Authentication\TwoFactorAuth\Manager;
use OC\User\Session;
use OC_App;
use OC_Util;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\Http\RedirectResponse;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\Authentication\TwoFactorAuth\IProvider;
use OCP\Defaults;
use OCP\IConfig;
use OCP\ILogger;
use OCP\IRequest;
use OCP\ISession;
use OCP\IURLGenerator;
use OCP\IUser;
use OCP\IUserManager;
use OCP\IUserSession;
use OC\Hooks\PublicEmitter;
use OCP\Util;
class LoginController extends Controller {
/** @var IUserManager */
private $userManager;
/** @var IConfig */
private $config;
/** @var ISession */
private $session;
/** @var IUserSession|Session */
private $userSession;
/** @var IURLGenerator */
private $urlGenerator;
/** @var ILogger */
private $logger;
/** @var Manager */
private $twoFactorManager;
/** @var Defaults */
private $defaults;
/**
* @param string $appName
* @param IRequest $request
* @param IUserManager $userManager
* @param IConfig $config
* @param ISession $session
* @param IUserSession $userSession
* @param IURLGenerator $urlGenerator
* @param ILogger $logger
* @param Manager $twoFactorManager
* @param Defaults $defaults
*/
public function __construct($appName,
IRequest $request,
IUserManager $userManager,
IConfig $config,
ISession $session,
IUserSession $userSession,
IURLGenerator $urlGenerator,
ILogger $logger,
Manager $twoFactorManager,
Defaults $defaults) {
parent::__construct($appName, $request);
$this->userManager = $userManager;
$this->config = $config;
$this->session = $session;
$this->userSession = $userSession;
$this->urlGenerator = $urlGenerator;
$this->logger = $logger;
$this->twoFactorManager = $twoFactorManager;
$this->defaults = $defaults;
}
/**
* @NoAdminRequired
* @UseSession
*
* @return RedirectResponse
*/
public function logout() {
$loginToken = $this->request->getCookie('nc_token');
if (!is_null($loginToken)) {
$this->config->deleteUserValue($this->userSession->getUser()->getUID(), 'login_token', $loginToken);
}
$this->userSession->logout();
$response = new RedirectResponse($this->urlGenerator->linkToRouteAbsolute('core.login.showLoginForm'));
$response->addHeader('Clear-Site-Data', '"cache", "cookies", "storage", "executionContexts"');
return $response;
}
/**
* @PublicPage
* @NoCSRFRequired
* @UseSession
*
* @param string $user
* @param string $redirect_url
* @param string $remember_login
*
* @return TemplateResponse|RedirectResponse
*/
public function showLoginForm($user, $redirect_url, $remember_login) {
if ($this->userSession->isLoggedIn()) {
return new RedirectResponse(OC_Util::getDefaultPageUrl());
}
$parameters = array();
$loginMessages = $this->session->get('loginMessages');
$errors = [];
$messages = [];
if (is_array($loginMessages)) {
list($errors, $messages) = $loginMessages;
}
$this->session->remove('loginMessages');
foreach ($errors as $value) {
$parameters[$value] = true;
}
$parameters['messages'] = $messages;
if (!is_null($user) && $user !== '') {
$parameters['loginName'] = $user;
$parameters['user_autofocus'] = false;
} else {
$parameters['loginName'] = '';
$parameters['user_autofocus'] = true;
}
if (!empty($redirect_url)) {
$parameters['redirect_url'] = $redirect_url;
}
$parameters['canResetPassword'] = true;
$parameters['resetPasswordLink'] = $this->config->getSystemValue('lost_password_link', '');
if (!$parameters['resetPasswordLink']) {
if (!is_null($user) && $user !== '') {
$userObj = $this->userManager->get($user);
if ($userObj instanceof IUser) {
$parameters['canResetPassword'] = $userObj->canChangePassword();
}
}
} elseif ($parameters['resetPasswordLink'] === 'disabled') {
$parameters['canResetPassword'] = false;
}
$parameters['alt_login'] = OC_App::getAlternativeLogIns();
$parameters['rememberLoginState'] = !empty($remember_login) ? $remember_login : 0;
$parameters['hideRemeberLoginState'] = !empty($redirect_url) && $this->session->exists('client.flow.state.token');
if (!is_null($user) && $user !== '') {
$parameters['loginName'] = $user;
$parameters['user_autofocus'] = false;
} else {
$parameters['loginName'] = '';
$parameters['user_autofocus'] = true;
}
// OpenGraph Support: http://ogp.me/
Util::addHeader('meta', ['property' => 'og:title', 'content' => Util::sanitizeHTML($this->defaults->getName())]);
Util::addHeader('meta', ['property' => 'og:description', 'content' => Util::sanitizeHTML($this->defaults->getSlogan())]);
Util::addHeader('meta', ['property' => 'og:site_name', 'content' => Util::sanitizeHTML($this->defaults->getName())]);
Util::addHeader('meta', ['property' => 'og:url', 'content' => $this->urlGenerator->getAbsoluteURL('/')]);
Util::addHeader('meta', ['property' => 'og:type', 'content' => 'website']);
Util::addHeader('meta', ['property' => 'og:image', 'content' => $this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core','favicon-touch.png'))]);
return new TemplateResponse(
$this->appName, 'login', $parameters, 'guest'
);
}
/**
* @param string $redirectUrl
* @return RedirectResponse
*/
private function generateRedirect($redirectUrl) {
if (!is_null($redirectUrl) && $this->userSession->isLoggedIn()) {
$location = $this->urlGenerator->getAbsoluteURL(urldecode($redirectUrl));
// Deny the redirect if the URL contains a @
// This prevents unvalidated redirects like ?redirect_url=:user@domain.com
if (strpos($location, '@') === false) {
return new RedirectResponse($location);
}
}
return new RedirectResponse(OC_Util::getDefaultPageUrl());
}
/**
* @PublicPage
* @UseSession
* @NoCSRFRequired
* @BruteForceProtection(action=login)
*
* @param string $user
* @param string $password
* @param string $redirect_url
* @param boolean $remember_login
* @param string $timezone
* @param string $timezone_offset
* @return RedirectResponse
*/
public function tryLogin($user, $password, $redirect_url, $remember_login = false, $timezone = '', $timezone_offset = '') {
if(!is_string($user)) {
throw new \InvalidArgumentException('Username must be string');
}
// If the user is already logged in and the CSRF check does not pass then
// simply redirect the user to the correct page as required. This is the
// case when an user has already logged-in, in another tab.
if(!$this->request->passesCSRFCheck()) {
return $this->generateRedirect($redirect_url);
}
if ($this->userManager instanceof PublicEmitter) {
$this->userManager->emit('\OC\User', 'preLogin', array($user, $password));
}
$originalUser = $user;
// TODO: Add all the insane error handling
/* @var $loginResult IUser */
$loginResult = $this->userManager->checkPasswordNoLogging($user, $password);
if ($loginResult === false) {
$users = $this->userManager->getByEmail($user);
// we only allow login by email if unique
if (count($users) === 1) {
$previousUser = $user;
$user = $users[0]->getUID();
if($user !== $previousUser) {
$loginResult = $this->userManager->checkPassword($user, $password);
}
}
}
if ($loginResult === false) {
$this->logger->warning('Login failed: \''. $user .'\' (Remote IP: \''. $this->request->getRemoteAddress(). '\')', ['app' => 'core']);
// Read current user and append if possible - we need to return the unmodified user otherwise we will leak the login name
$args = !is_null($user) ? ['user' => $originalUser] : [];
if (!is_null($redirect_url)) {
$args['redirect_url'] = $redirect_url;
}
$response = new RedirectResponse($this->urlGenerator->linkToRoute('core.login.showLoginForm', $args));
$response->throttle(['user' => $user]);
$this->session->set('loginMessages', [
['invalidpassword'], []
]);
return $response;
}
// TODO: remove password checks from above and let the user session handle failures
// requires https://github.com/owncloud/core/pull/24616
$this->userSession->completeLogin($loginResult, ['loginName' => $user, 'password' => $password]);
$this->userSession->createSessionToken($this->request, $loginResult->getUID(), $user, $password, (int)$remember_login);
// User has successfully logged in, now remove the password reset link, when it is available
$this->config->deleteUserValue($loginResult->getUID(), 'core', 'lostpassword');
$this->session->set('last-password-confirm', $loginResult->getLastLogin());
if ($timezone_offset !== '') {
$this->config->setUserValue($loginResult->getUID(), 'core', 'timezone', $timezone);
$this->session->set('timezone', $timezone_offset);
}
if ($this->twoFactorManager->isTwoFactorAuthenticated($loginResult)) {
$this->twoFactorManager->prepareTwoFactorLogin($loginResult, $remember_login);
$providers = $this->twoFactorManager->getProviders($loginResult);
if (count($providers) === 1) {
// Single provider, hence we can redirect to that provider's challenge page directly
/* @var $provider IProvider */
$provider = array_pop($providers);
$url = 'core.TwoFactorChallenge.showChallenge';
$urlParams = [
'challengeProviderId' => $provider->getId(),
];
} else {
$url = 'core.TwoFactorChallenge.selectChallenge';
$urlParams = [];
}
if (!is_null($redirect_url)) {
$urlParams['redirect_url'] = $redirect_url;
}
return new RedirectResponse($this->urlGenerator->linkToRoute($url, $urlParams));
}
if ($remember_login) {
$this->userSession->createRememberMeToken($loginResult);
}
return $this->generateRedirect($redirect_url);
}
/**
* @NoAdminRequired
* @UseSession
* @BruteForceProtection(action=sudo)
*
* @license GNU AGPL version 3 or any later version
*
* @param string $password
* @return DataResponse
*/
public function confirmPassword($password) {
$loginName = $this->userSession->getLoginName();
$loginResult = $this->userManager->checkPassword($loginName, $password);
if ($loginResult === false) {
$response = new DataResponse([], Http::STATUS_FORBIDDEN);
$response->throttle();
return $response;
}
$confirmTimestamp = time();
$this->session->set('last-password-confirm', $confirmTimestamp);
return new DataResponse(['lastLogin' => $confirmTimestamp], Http::STATUS_OK);
}
}