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<?php
/**
* @copyright 2018, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Bjoern Schiessle <bjoern@schiessle.org>
* @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/>.
*
*/
namespace OC\AppFramework\Middleware\Security;
use OC\AppFramework\Middleware\Security\Exceptions\NotConfirmedException;
use OC\AppFramework\Utility\ControllerMethodReflector;
use OC\Authentication\Exceptions\ExpiredTokenException;
use OC\Authentication\Exceptions\InvalidTokenException;
use OC\Authentication\Exceptions\WipeTokenException;
use OC\Authentication\Token\IProvider;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\Attribute\PasswordConfirmationRequired;
use OCP\AppFramework\Middleware;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\ISession;
use OCP\IUserSession;
use OCP\Session\Exceptions\SessionNotAvailableException;
use OCP\User\Backend\IPasswordConfirmationBackend;
use ReflectionMethod;
class PasswordConfirmationMiddleware extends Middleware {
/** @var ControllerMethodReflector */
private $reflector;
/** @var ISession */
private $session;
/** @var IUserSession */
private $userSession;
/** @var ITimeFactory */
private $timeFactory;
/** @var array */
private $excludedUserBackEnds = ['user_saml' => true, 'user_globalsiteselector' => true];
private IProvider $tokenProvider;
/**
* PasswordConfirmationMiddleware constructor.
*
* @param ControllerMethodReflector $reflector
* @param ISession $session
* @param IUserSession $userSession
* @param ITimeFactory $timeFactory
*/
public function __construct(ControllerMethodReflector $reflector,
ISession $session,
IUserSession $userSession,
ITimeFactory $timeFactory,
IProvider $tokenProvider,
) {
$this->reflector = $reflector;
$this->session = $session;
$this->userSession = $userSession;
$this->timeFactory = $timeFactory;
$this->tokenProvider = $tokenProvider;
}
/**
* @param Controller $controller
* @param string $methodName
* @throws NotConfirmedException
*/
public function beforeController($controller, $methodName) {
$reflectionMethod = new ReflectionMethod($controller, $methodName);
if ($this->hasAnnotationOrAttribute($reflectionMethod, 'PasswordConfirmationRequired', PasswordConfirmationRequired::class)) {
$user = $this->userSession->getUser();
$backendClassName = '';
if ($user !== null) {
$backend = $user->getBackend();
if ($backend instanceof IPasswordConfirmationBackend) {
if (!$backend->canConfirmPassword($user->getUID())) {
return;
}
}
$backendClassName = $user->getBackendClassName();
}
try {
$sessionId = $this->session->getId();
$token = $this->tokenProvider->getToken($sessionId);
} catch (SessionNotAvailableException|InvalidTokenException|WipeTokenException|ExpiredTokenException) {
// States we do not deal with here.
return;
}
$scope = $token->getScopeAsArray();
if (isset($scope['password-unconfirmable']) && $scope['password-unconfirmable'] === true) {
// Users logging in from SSO backends cannot confirm their password by design
return;
}
$lastConfirm = (int) $this->session->get('last-password-confirm');
// TODO: confirm excludedUserBackEnds can go away and remove it
if (!isset($this->excludedUserBackEnds[$backendClassName]) && $lastConfirm < ($this->timeFactory->getTime() - (30 * 60 + 15))) { // allow 15 seconds delay
throw new NotConfirmedException();
}
}
}
/**
* @template T
*
* @param ReflectionMethod $reflectionMethod
* @param string $annotationName
* @param class-string<T> $attributeClass
* @return boolean
*/
protected function hasAnnotationOrAttribute(ReflectionMethod $reflectionMethod, string $annotationName, string $attributeClass): bool {
if (!empty($reflectionMethod->getAttributes($attributeClass))) {
return true;
}
if ($this->reflector->hasAnnotation($annotationName)) {
return true;
}
return false;
}
}
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