nextcloud/core/Controller/TwoFactorChallengeControlle...

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
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* @author Christoph Wurst <christoph@owncloud.com>
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* @author Joas Schilling <coding@schilljs.com>
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*
* @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;
use OC_Util;
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use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\RedirectResponse;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\Authentication\TwoFactorAuth\TwoFactorException;
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use OCP\IRequest;
use OCP\ISession;
use OCP\IURLGenerator;
use OCP\IUserSession;
class TwoFactorChallengeController extends Controller {
/** @var Manager */
private $twoFactorManager;
/** @var IUserSession */
private $userSession;
/** @var ISession */
private $session;
/** @var IURLGenerator */
private $urlGenerator;
/**
* @param string $appName
* @param IRequest $request
* @param Manager $twoFactorManager
* @param IUserSession $userSession
* @param ISession $session
* @param IURLGenerator $urlGenerator
*/
public function __construct($appName, IRequest $request, Manager $twoFactorManager, IUserSession $userSession,
ISession $session, IURLGenerator $urlGenerator) {
parent::__construct($appName, $request);
$this->twoFactorManager = $twoFactorManager;
$this->userSession = $userSession;
$this->session = $session;
$this->urlGenerator = $urlGenerator;
}
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/**
* @return string
*/
protected function getLogoutAttribute() {
return OC_User::getLogoutAttribute();
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}
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/**
* @NoAdminRequired
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* @NoCSRFRequired
*
* @param string $redirect_url
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* @return TemplateResponse
*/
public function selectChallenge($redirect_url) {
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$user = $this->userSession->getUser();
$providers = $this->twoFactorManager->getProviders($user);
$backupProvider = $this->twoFactorManager->getBackupProvider($user);
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$data = [
'providers' => $providers,
'backupProvider' => $backupProvider,
'redirect_url' => $redirect_url,
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'logout_attribute' => $this->getLogoutAttribute(),
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];
return new TemplateResponse($this->appName, 'twofactorselectchallenge', $data, 'guest');
}
/**
* @NoAdminRequired
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* @NoCSRFRequired
* @UseSession
*
* @param string $challengeProviderId
* @param string $redirect_url
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* @return TemplateResponse|RedirectResponse
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*/
public function showChallenge($challengeProviderId, $redirect_url) {
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$user = $this->userSession->getUser();
$provider = $this->twoFactorManager->getProvider($user, $challengeProviderId);
if (is_null($provider)) {
return new RedirectResponse($this->urlGenerator->linkToRoute('core.TwoFactorChallenge.selectChallenge'));
}
$backupProvider = $this->twoFactorManager->getBackupProvider($user);
if (!is_null($backupProvider) && $backupProvider->getId() === $provider->getId()) {
// Don't show the backup provider link if we're already showing that provider's challenge
$backupProvider = null;
}
$errorMessage = '';
$error = false;
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if ($this->session->exists('two_factor_auth_error')) {
$this->session->remove('two_factor_auth_error');
$error = true;
$errorMessage = $this->session->get("two_factor_auth_error_message");
$this->session->remove('two_factor_auth_error_message');
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}
$tmpl = $provider->getTemplate($user);
$tmpl->assign('redirect_url', $redirect_url);
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$data = [
'error' => $error,
'error_message' => $errorMessage,
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'provider' => $provider,
'backupProvider' => $backupProvider,
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'logout_attribute' => $this->getLogoutAttribute(),
'redirect_url' => $redirect_url,
'template' => $tmpl->fetchPage(),
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];
return new TemplateResponse($this->appName, 'twofactorshowchallenge', $data, 'guest');
}
/**
* @NoAdminRequired
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* @NoCSRFRequired
* @UseSession
*
* @UserRateThrottle(limit=5, period=100)
*
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* @param string $challengeProviderId
* @param string $challenge
* @param string $redirect_url
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* @return RedirectResponse
*/
public function solveChallenge($challengeProviderId, $challenge, $redirect_url = null) {
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$user = $this->userSession->getUser();
$provider = $this->twoFactorManager->getProvider($user, $challengeProviderId);
if (is_null($provider)) {
return new RedirectResponse($this->urlGenerator->linkToRoute('core.TwoFactorChallenge.selectChallenge'));
}
try {
if ($this->twoFactorManager->verifyChallenge($challengeProviderId, $user, $challenge)) {
if (!is_null($redirect_url)) {
return new RedirectResponse($this->urlGenerator->getAbsoluteURL(urldecode($redirect_url)));
}
return new RedirectResponse(OC_Util::getDefaultPageUrl());
}
} catch (TwoFactorException $e) {
/*
* The 2FA App threw an TwoFactorException. Now we display more
* information to the user. The exception text is stored in the
* session to be used in showChallenge()
*/
$this->session->set('two_factor_auth_error_message', $e->getMessage());
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}
$this->session->set('two_factor_auth_error', true);
return new RedirectResponse($this->urlGenerator->linkToRoute('core.TwoFactorChallenge.showChallenge', [
'challengeProviderId' => $provider->getId(),
'redirect_url' => $redirect_url,
]));
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}
}