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Add the new PublicShareController and PublicShareMiddleware 

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
This commit is contained in:
Roeland Jago Douma 2018-05-18 12:28:52 +02:00
parent cad8824a8e
commit f36ef8ca80
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GPG Key ID: F941078878347C0C
7 changed files with 433 additions and 1 deletions
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4
lib/composer/composer/autoload_classmap.php
View File

@ -18,6 +18,7 @@ return array(
'OCP\\App' => $baseDir . '/lib/public/App.php',
'OCP\\AppFramework\\ApiController' => $baseDir . '/lib/public/AppFramework/ApiController.php',
'OCP\\AppFramework\\App' => $baseDir . '/lib/public/AppFramework/App.php',
'OCP\\AppFramework\\AuthPublicShareController' => $baseDir . '/lib/public/AppFramework/AuthPublicShareController.php',
'OCP\\AppFramework\\Controller' => $baseDir . '/lib/public/AppFramework/Controller.php',
'OCP\\AppFramework\\Db\\DoesNotExistException' => $baseDir . '/lib/public/AppFramework/Db/DoesNotExistException.php',
'OCP\\AppFramework\\Db\\Entity' => $baseDir . '/lib/public/AppFramework/Db/Entity.php',
@ -56,6 +57,7 @@ return array(
'OCP\\AppFramework\\OCS\\OCSException' => $baseDir . '/lib/public/AppFramework/OCS/OCSException.php',
'OCP\\AppFramework\\OCS\\OCSForbiddenException' => $baseDir . '/lib/public/AppFramework/OCS/OCSForbiddenException.php',
'OCP\\AppFramework\\OCS\\OCSNotFoundException' => $baseDir . '/lib/public/AppFramework/OCS/OCSNotFoundException.php',
'OCP\\AppFramework\\PublicShareController' => $baseDir . '/lib/public/AppFramework/PublicShareController.php',
'OCP\\AppFramework\\QueryException' => $baseDir . '/lib/public/AppFramework/QueryException.php',
'OCP\\AppFramework\\Utility\\IControllerMethodReflector' => $baseDir . '/lib/public/AppFramework/Utility/IControllerMethodReflector.php',
'OCP\\AppFramework\\Utility\\ITimeFactory' => $baseDir . '/lib/public/AppFramework/Utility/ITimeFactory.php',
@ -350,6 +352,8 @@ return array(
'OC\\AppFramework\\Http\\Request' => $baseDir . '/lib/private/AppFramework/Http/Request.php',
'OC\\AppFramework\\Middleware\\MiddlewareDispatcher' => $baseDir . '/lib/private/AppFramework/Middleware/MiddlewareDispatcher.php',
'OC\\AppFramework\\Middleware\\OCSMiddleware' => $baseDir . '/lib/private/AppFramework/Middleware/OCSMiddleware.php',
'OC\\AppFramework\\Middleware\\PublicShare\\Exceptions\\NeedAuthenticationException' => $baseDir . '/lib/private/AppFramework/Middleware/PublicShare/Exceptions/NeedAuthenticationException.php',
'OC\\AppFramework\\Middleware\\PublicShare\\PublicShareMiddleware' => $baseDir . '/lib/private/AppFramework/Middleware/PublicShare/PublicShareMiddleware.php',
'OC\\AppFramework\\Middleware\\Security\\BruteForceMiddleware' => $baseDir . '/lib/private/AppFramework/Middleware/Security/BruteForceMiddleware.php',
'OC\\AppFramework\\Middleware\\Security\\CORSMiddleware' => $baseDir . '/lib/private/AppFramework/Middleware/Security/CORSMiddleware.php',
'OC\\AppFramework\\Middleware\\Security\\Exceptions\\AppNotEnabledException' => $baseDir . '/lib/private/AppFramework/Middleware/Security/Exceptions/AppNotEnabledException.php',

4
lib/composer/composer/autoload_static.php
View File

@ -48,6 +48,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
'OCP\\App' => __DIR__ . '/../../..' . '/lib/public/App.php',
'OCP\\AppFramework\\ApiController' => __DIR__ . '/../../..' . '/lib/public/AppFramework/ApiController.php',
'OCP\\AppFramework\\App' => __DIR__ . '/../../..' . '/lib/public/AppFramework/App.php',
'OCP\\AppFramework\\AuthPublicShareController' => __DIR__ . '/../../..' . '/lib/public/AppFramework/AuthPublicShareController.php',
'OCP\\AppFramework\\Controller' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Controller.php',
'OCP\\AppFramework\\Db\\DoesNotExistException' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Db/DoesNotExistException.php',
'OCP\\AppFramework\\Db\\Entity' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Db/Entity.php',
@ -86,6 +87,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
'OCP\\AppFramework\\OCS\\OCSException' => __DIR__ . '/../../..' . '/lib/public/AppFramework/OCS/OCSException.php',
'OCP\\AppFramework\\OCS\\OCSForbiddenException' => __DIR__ . '/../../..' . '/lib/public/AppFramework/OCS/OCSForbiddenException.php',
'OCP\\AppFramework\\OCS\\OCSNotFoundException' => __DIR__ . '/../../..' . '/lib/public/AppFramework/OCS/OCSNotFoundException.php',
'OCP\\AppFramework\\PublicShareController' => __DIR__ . '/../../..' . '/lib/public/AppFramework/PublicShareController.php',
'OCP\\AppFramework\\QueryException' => __DIR__ . '/../../..' . '/lib/public/AppFramework/QueryException.php',
'OCP\\AppFramework\\Utility\\IControllerMethodReflector' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Utility/IControllerMethodReflector.php',
'OCP\\AppFramework\\Utility\\ITimeFactory' => __DIR__ . '/../../..' . '/lib/public/AppFramework/Utility/ITimeFactory.php',
@ -380,6 +382,8 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
'OC\\AppFramework\\Http\\Request' => __DIR__ . '/../../..' . '/lib/private/AppFramework/Http/Request.php',
'OC\\AppFramework\\Middleware\\MiddlewareDispatcher' => __DIR__ . '/../../..' . '/lib/private/AppFramework/Middleware/MiddlewareDispatcher.php',
'OC\\AppFramework\\Middleware\\OCSMiddleware' => __DIR__ . '/../../..' . '/lib/private/AppFramework/Middleware/OCSMiddleware.php',
'OC\\AppFramework\\Middleware\\PublicShare\\Exceptions\\NeedAuthenticationException' => __DIR__ . '/../../..' . '/lib/private/AppFramework/Middleware/PublicShare/Exceptions/NeedAuthenticationException.php',
'OC\\AppFramework\\Middleware\\PublicShare\\PublicShareMiddleware' => __DIR__ . '/../../..' . '/lib/private/AppFramework/Middleware/PublicShare/PublicShareMiddleware.php',
'OC\\AppFramework\\Middleware\\Security\\BruteForceMiddleware' => __DIR__ . '/../../..' . '/lib/private/AppFramework/Middleware/Security/BruteForceMiddleware.php',
'OC\\AppFramework\\Middleware\\Security\\CORSMiddleware' => __DIR__ . '/../../..' . '/lib/private/AppFramework/Middleware/Security/CORSMiddleware.php',
'OC\\AppFramework\\Middleware\\Security\\Exceptions\\AppNotEnabledException' => __DIR__ . '/../../..' . '/lib/private/AppFramework/Middleware/Security/Exceptions/AppNotEnabledException.php',

8
lib/private/AppFramework/DependencyInjection/DIContainer.php
View File

@ -62,6 +62,7 @@ use OCP\IL10N;
use OCP\ILogger;
use OCP\IRequest;
use OCP\IServerContainer;
use OCP\ISession;
use OCP\IUserSession;
use OCP\RichObjectStrings\IValidator;
use OCP\Encryption\IManager;
@ -304,7 +305,7 @@ class DIContainer extends SimpleContainer implements IAppContainer {
});
$middleWares = &$this->middleWares;
$this->registerService('MiddlewareDispatcher', function($c) use (&$middleWares) {
$this->registerService('MiddlewareDispatcher', function(SimpleContainer $c) use (&$middleWares) {
$dispatcher = new MiddlewareDispatcher();
$dispatcher->registerMiddleware($c[OC\AppFramework\Middleware\Security\SameSiteCookieMiddleware::class]);
$dispatcher->registerMiddleware($c['CORSMiddleware']);
@ -314,6 +315,11 @@ class DIContainer extends SimpleContainer implements IAppContainer {
$dispatcher->registerMiddleware($c['TwoFactorMiddleware']);
$dispatcher->registerMiddleware($c['BruteForceMiddleware']);
$dispatcher->registerMiddleware($c['RateLimitingMiddleware']);
$dispatcher->registerMiddleware(new OC\AppFramework\Middleware\PublicShare\PublicShareMiddleware(
$c['Request'],
$c->query(ISession::class),
$c->query(\OCP\IConfig::class)
));
foreach($middleWares as $middleWare) {
$dispatcher->registerMiddleware($c[$middleWare]);

7
lib/private/AppFramework/Middleware/PublicShare/Exceptions/NeedAuthenticationException.php Normal file
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@ -0,0 +1,7 @@
<?php
namespace OC\AppFramework\Middleware\PublicShare\Exceptions;
class NeedAuthenticationException extends \Exception {
}

85
lib/private/AppFramework/Middleware/PublicShare/PublicShareMiddleware.php Normal file
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@ -0,0 +1,85 @@
<?php
namespace OC\AppFramework\Middleware\PublicShare;
use OC\AppFramework\Middleware\PublicShare\Exceptions\NeedAuthenticationException;
use OCP\AppFramework\AuthPublicShareController;
use OCP\AppFramework\Http\NotFoundResponse;
use OCP\AppFramework\Http\Response;
use OCP\AppFramework\Middleware;
use OCP\AppFramework\PublicShareController;
use OCP\Files\NotFoundException;
use OCP\IRequest;
use OCP\ISession;
class PublicShareMiddleware extends Middleware {
/** @var IRequest */
private $request;
/** @var ISession */
private $session;
public function __construct(IRequest $request, ISession $session) {
$this->request = $request;
$this->session = $session;
}
public function beforeController($controller, $methodName) {
if (!($controller instanceof PublicShareController)) {
return;
}
// We require the token parameter to be set
$token = $this->request->getParam('token');
if ($token === null) {
throw new NotFoundException();
}
// Set the token
$controller->setToken($token);
if (!$controller->isValidToken()) {
$controller->shareNotFound();
throw new NotFoundException();
}
// No need to check for authentication when we try to authenticate
if ($methodName === 'authenticate' || $methodName === 'showAuthenticate') {
return;
}
// If authentication succeeds just continue
if ($controller->isAuthenticated($token)) {
return;
}
// If we can authenticate to this controller do it else we throw a 404 to not leak any info
if ($controller instanceof AuthPublicShareController) {
$this->session->set('public_link_authenticate_redirect', json_encode($this->request->getParams()));
throw new NeedAuthenticationException();
}
throw new NotFoundException();
}
public function afterException($controller, $methodName, \Exception $exception) {
if (!($controller instanceof PublicShareController)) {
throw $exception;
}
if ($exception instanceof NotFoundException) {
return new NotFoundResponse();
}
if ($controller instanceof AuthPublicShareController && $exception instanceof NeedAuthenticationException) {
return $controller->getAuthenticationRedirect($this->getFunctionForRoute($this->request->getParam('_route')));
}
throw $exception;
}
private function getFunctionForRoute(string $route): string {
return array_pop(explode('.', $route));
}
}

188
lib/public/AppFramework/AuthPublicShareController.php Normal file
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@ -0,0 +1,188 @@
<?php
/**
* @copyright 2018, 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/>.
*
*/
declare(strict_types=1);
namespace OCP\AppFramework;
use OCP\AppFramework\Http\RedirectResponse;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\Files\NotFoundException;
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
*/
abstract public function showAuthenticate(): TemplateResponse;
/**
* The template to show when authentication failed
*
* @since 14.0.0
*/
abstract protected function showAuthFailed(): TemplateResponse;
/**
* 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();
$response = $this->getRedirect();
$this->session->clear();
$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);
$class = strtolower((new \ReflectionClass($this))->getShortName());
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 = [];
} else {
$params = json_decode($params, true);
if (isset($params['_route'])) {
$route = $params['_route'];
unset($params['_route']);
}
}
return new RedirectResponse($this->urlGenerator->linkToRoute($route, $params));
}
}

138
lib/public/AppFramework/PublicShareController.php Normal file
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@ -0,0 +1,138 @@
<?php
/**
* @copyright 2018, 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/>.
*
*/
declare(strict_types=1);
namespace OCP\AppFramework;
use OCP\IRequest;
use OCP\ISession;
/**
* Base controller for public shares
*
* It will verify if the user is properly authenticated to the share. If not a 404
* is thrown by the PublicShareMiddleware.
*
* Use this for example for a controller that is not to be called via a webbrowser
* directly. For example a PublicPreviewController. As this is not meant to be
* called by a user direclty.
*
* To show an auth page extend the AuthPublicShareController
*
* @since 14.0.0
*/
abstract class PublicShareController extends Controller {
/** @var ISession */
protected $session;
/** @var string */
private $token;
/**
* @since 14.0.0
*/
public function __construct(string $appName,
IRequest $request,
ISession $session) {
parent::__construct($appName, $request);
$this->session = $session;
}
/**
* Middleware set the token for the request
*
* @since 14.0.0
*/
final public function setToken(string $token) {
$this->token = $token;
}
/**
* Get the token for this request
*
* @since 14.0.0
*/
public function getToken(): string {
return $this->token;
}
/**
* Get a hash of the password for this share
*
* To ensure access is blocked when the password to a share is changed we store
* a hash of the password for this token.
*
* @since 14.0.0
*/
abstract protected function getPasswordHash(): string;
/**
* Is the provided token a valid token
*
* This function is already called from the middleware directly after setting the token.
*
* @since 14.0.0
*/
abstract public function isValidToken(): bool;
/**
* Is a share with this token password protected
*
* @since 14.0.0
*/
abstract protected function isPasswordProtected(): bool;
/**
* Check if a share is authenticated or not
*
* @since 14.0.0
*/
final public function isAuthenticated(): bool {
// Always authenticated against non password protected shares
if (!$this->isPasswordProtected()) {
return true;
}
// If we are authenticated properly
if ($this->session->get('public_link_authenticated_token') === $this->getToken() &&
$this->session->get('public_link_authenticated_password_hash') === $this->getPasswordHash()) {
return true;
}
// Fail by default if nothing matches
return false;
}
/**
* Function called if the share is not found.
*
* You can use this to do some logging for example
*
* @since 14.0.0
*/
public function shareNotFound() {
}
}