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<?php
/**
* @copyright 2018, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Tim Obert <tobert@w-commerce.de>
* @author TimObert <tobert@w-commerce.de>
*
* @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/>.
*
*/
declare(strict_types=1);
namespace OCP\AppFramework;
use OCP\AppFramework\Http\RedirectResponse;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\IRequest;
use OCP\ISession;
use OCP\IURLGenerator;
/**
* Base controller for interactive public shares
*
* It will verify if the user is properly authenticated to the share. If not the
* user will be redirected to an authentication page.
*
* Use this for a controller that is to be called directly by a user. So the
* normal public share page for files/calendars etc.
*
* @since 14.0.0
*/
abstract class AuthPublicShareController extends PublicShareController {
/** @var IURLGenerator */
protected $urlGenerator;
/**
* @since 14.0.0
*/
public function __construct(string $appName,
IRequest $request,
ISession $session,
IURLGenerator $urlGenerator) {
parent::__construct($appName, $request, $session);
$this->urlGenerator = $urlGenerator;
}
/**
* @PublicPage
* @NoCSRFRequired
*
* Show the authentication page
* The form has to submit to the authenticate method route
*
* @since 14.0.0
*/
public function showAuthenticate(): TemplateResponse {
return new TemplateResponse('core', 'publicshareauth', [], 'guest');
}
/**
* The template to show when authentication failed
*
* @since 14.0.0
*/
protected function showAuthFailed(): TemplateResponse {
return new TemplateResponse('core', 'publicshareauth', ['wrongpw' => true], 'guest');
}
/**
* Verify the password
*
* @since 14.0.0
*/
abstract protected function verifyPassword(string $password): bool;
/**
* Function called after failed authentication
*
* You can use this to do some logging for example
*
* @since 14.0.0
*/
protected function authFailed() {
}
/**
* Function called after successfull authentication
*
* You can use this to do some logging for example
*
* @since 14.0.0
*/
protected function authSucceeded() {
}
/**
* @UseSession
* @PublicPage
* @BruteForceProtection(action=publicLinkAuth)
*
* Authenticate the share
*
* @since 14.0.0
*/
final public function authenticate(string $password = '') {
// Already authenticated
if ($this->isAuthenticated()) {
return $this->getRedirect();
}
if (!$this->verifyPassword($password)) {
$this->authFailed();
$response = $this->showAuthFailed();
$response->throttle();
return $response;
}
$this->session->regenerateId(true, true);
$response = $this->getRedirect();
$this->session->set('public_link_authenticated_token', $this->getToken());
$this->session->set('public_link_authenticated_password_hash', $this->getPasswordHash());
$this->authSucceeded();
return $response;
}
/**
* Default landing page
*
* @since 14.0.0
*/
abstract public function showShare(): TemplateResponse;
/**
* @since 14.0.0
*/
final public function getAuthenticationRedirect(string $redirect): RedirectResponse {
return new RedirectResponse(
$this->urlGenerator->linkToRoute($this->getRoute('showAuthenticate'), ['token' => $this->getToken(), 'redirect' => $redirect])
);
}
/**
* @since 14.0.0
*/
private function getRoute(string $function): string {
$app = strtolower($this->appName);
$class = (new \ReflectionClass($this))->getShortName();
if (substr($class, -10) === 'Controller') {
$class = substr($class, 0, -10);
}
return $app .'.'. $class .'.'. $function;
}
/**
* @since 14.0.0
*/
private function getRedirect(): RedirectResponse {
//Get all the stored redirect parameters:
$params = $this->session->get('public_link_authenticate_redirect');
$route = $this->getRoute('showShare');
if ($params === null) {
$params = [
'token' => $this->getToken(),
];
} else {
$params = json_decode($params, true);
if (isset($params['_route'])) {
$route = $params['_route'];
unset($params['_route']);
}
// If the token doesn't match the rest of the arguments can't be trusted either
if (isset($params['token']) && $params['token'] !== $this->getToken()) {
$params = [
'token' => $this->getToken(),
];
}
// We need a token
if (!isset($params['token'])) {
$params = [
'token' => $this->getToken(),
];
}
}
return new RedirectResponse($this->urlGenerator->linkToRoute($route, $params));
}
}
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