nextcloud/core/Controller/LoginController.php

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<?php
/**
* @copyright Copyright (c) 2017, Sandro Lutz <sandro.lutz@temparus.ch>
* @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Daniel Kesselberg <mail@danielkesselberg.de>
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* @author Joas Schilling <coding@schilljs.com>
* @author Julius Härtl <jus@bitgrid.net>
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* @author Lukas Reschke <lukas@statuscode.ch>
* @author Michael Weimann <mail@michael-weimann.eu>
* @author Rayn0r <andrew@ilpss8.myfirewall.org>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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\Login\Chain;
use OC\Authentication\Login\LoginData;
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use OC\Authentication\TwoFactorAuth\Manager;
use OC\Security\Bruteforce\Throttler;
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\Defaults;
use OCP\IConfig;
use OCP\IInitialStateService;
use OCP\ILogger;
use OCP\IRequest;
use OCP\ISession;
use OCP\IURLGenerator;
use OCP\IUser;
use OCP\IUserManager;
use OCP\IUserSession;
use OCP\Util;
class LoginController extends Controller {
const LOGIN_MSG_INVALIDPASSWORD = 'invalidpassword';
const LOGIN_MSG_USERDISABLED = 'userdisabled';
/** @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 Defaults */
private $defaults;
/** @var Throttler */
private $throttler;
/** @var Chain */
private $loginChain;
/** @var IInitialStateService */
private $initialStateService;
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public function __construct(?string $appName,
IRequest $request,
IUserManager $userManager,
IConfig $config,
ISession $session,
IUserSession $userSession,
IURLGenerator $urlGenerator,
ILogger $logger,
Defaults $defaults,
Throttler $throttler,
Chain $loginChain,
IInitialStateService $initialStateService) {
parent::__construct($appName, $request);
$this->userManager = $userManager;
$this->config = $config;
$this->session = $session;
$this->userSession = $userSession;
$this->urlGenerator = $urlGenerator;
$this->logger = $logger;
$this->defaults = $defaults;
$this->throttler = $throttler;
$this->loginChain = $loginChain;
$this->initialStateService = $initialStateService;
}
/**
* @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',
['clear' => true] // this param the the code in login.js may be removed when the "Clear-Site-Data" is working in the browsers
));
$this->session->set('clearingExecutionContexts', '1');
$this->session->close();
$response->addHeader('Clear-Site-Data', '"cache", "storage"');
return $response;
}
/**
* @PublicPage
* @NoCSRFRequired
* @UseSession
*
* @param string $user
* @param string $redirect_url
*
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* @return TemplateResponse|RedirectResponse
*/
public function showLoginForm(string $user = null, string $redirect_url = null): Http\Response {
if ($this->userSession->isLoggedIn()) {
return new RedirectResponse(OC_Util::getDefaultPageUrl());
}
$loginMessages = $this->session->get('loginMessages');
if (is_array($loginMessages)) {
list($errors, $messages) = $loginMessages;
$this->initialStateService->provideInitialState('core', 'loginMessages', $messages);
$this->initialStateService->provideInitialState('core', 'loginErrors', $errors);
}
$this->session->remove('loginMessages');
if ($user !== null && $user !== '') {
$this->initialStateService->provideInitialState('core', 'loginUsername', $user);
} else {
$this->initialStateService->provideInitialState('core', 'loginUsername', '');
}
$this->initialStateService->provideInitialState(
'core',
'loginAutocomplete',
$this->config->getSystemValue('login_form_autocomplete', true) === true
);
if (!empty($redirect_url)) {
$this->initialStateService->provideInitialState('core', 'loginRedirectUrl', $redirect_url);
}
$this->initialStateService->provideInitialState(
'core',
'loginThrottleDelay',
$this->throttler->getDelay($this->request->getRemoteAddress())
);
$this->setPasswordResetInitialState($user);
// 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'))]);
$parameters = [
'alt_login' => OC_App::getAlternativeLogIns(),
];
return new TemplateResponse(
$this->appName, 'login', $parameters, 'guest'
);
}
/**
* Sets the password reset state
*
* @param string $username
*/
private function setPasswordResetInitialState(?string $username): void {
if ($username !== null && $username !== '') {
$user = $this->userManager->get($username);
} else {
$user = null;
}
$passwordLink = $this->config->getSystemValue('lost_password_link', '');
$this->initialStateService->provideInitialState(
'core',
'loginResetPasswordLink',
$passwordLink
);
$this->initialStateService->provideInitialState(
'core',
'loginCanResetPassword',
$this->canResetPassword($passwordLink, $user)
);
}
/**
* @param string|null $passwordLink
* @param IUser|null $user
*
* Users may not change their passwords if:
* - The account is disabled
* - The backend doesn't support password resets
* - The password reset function is disabled
*
* @return bool
*/
private function canResetPassword(?string $passwordLink, ?IUser $user): bool {
if ($passwordLink === 'disabled') {
return false;
}
if (!$passwordLink && $user !== null) {
return $user->canChangePassword();
}
if ($user !== null && $user->isEnabled() === false) {
return false;
}
return true;
}
private function generateRedirect(?string $redirectUrl): RedirectResponse {
if ($redirectUrl !== null && $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 string $timezone
* @param string $timezone_offset
*
* @return RedirectResponse
*/
public function tryLogin(string $user,
string $password,
string $redirect_url = null,
string $timezone = '',
string $timezone_offset = ''): RedirectResponse {
// If the user is already logged in and the CSRF check does not pass then
// simply redirect the user to the correct page as required. This is the
// case when an user has already logged-in, in another tab.
if (!$this->request->passesCSRFCheck()) {
return $this->generateRedirect($redirect_url);
}
$data = new LoginData(
$this->request,
trim($user),
$password,
$redirect_url,
$timezone,
$timezone_offset
);
$result = $this->loginChain->process($data);
if (!$result->isSuccess()) {
return $this->createLoginFailedResponse(
$data->getUsername(),
$user,
$redirect_url,
$result->getErrorMessage()
);
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}
if ($result->getRedirectUrl() !== null) {
return new RedirectResponse($result->getRedirectUrl());
}
return $this->generateRedirect($redirect_url);
}
/**
* Creates a login failed response.
*
* @param string $user
* @param string $originalUser
* @param string $redirect_url
* @param string $loginMessage
*
* @return RedirectResponse
*/
private function createLoginFailedResponse(
$user, $originalUser, $redirect_url, string $loginMessage) {
// Read current user and append if possible we need to
// return the unmodified user otherwise we will leak the login name
$args = $user !== null ? ['user' => $originalUser] : [];
if ($redirect_url !== null) {
$args['redirect_url'] = $redirect_url;
}
$response = new RedirectResponse(
$this->urlGenerator->linkToRoute('core.login.showLoginForm', $args)
);
$response->throttle(['user' => substr($user, 0, 64)]);
$this->session->set('loginMessages', [
[$loginMessage], []
]);
return $response;
}
/**
* @NoAdminRequired
* @UseSession
* @BruteForceProtection(action=sudo)
*
* @param string $password
*
* @return DataResponse
* @license GNU AGPL version 3 or any later version
*
*/
public function confirmPassword($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);
}
}