nextcloud/settings/Controller/AuthSettingsController.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Christoph Wurst <christoph@owncloud.com>
* @author Fabrizio Steiner <fabrizio.steiner@gmail.com>
* @author Joas Schilling <coding@schilljs.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Marcel Waldvogel <marcel.waldvogel@uni-konstanz.de>
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* @author Robin Appelman <robin@icewind.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\Settings\Controller;
use BadMethodCallException;
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use OC\Authentication\Exceptions\InvalidTokenException;
use OC\Authentication\Exceptions\PasswordlessTokenException;
use OC\Authentication\Exceptions\WipeTokenException;
use OC\Authentication\Token\INamedToken;
use OC\Authentication\Token\IProvider;
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use OC\Authentication\Token\IToken;
use OC\Authentication\Token\IWipeableToken;
use OC\Authentication\Token\RemoteWipe;
use OC\Settings\Activity\Provider;
use OCP\Activity\IManager;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\JSONResponse;
use OCP\ILogger;
use OCP\IRequest;
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use OCP\ISession;
use OCP\IUserSession;
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use OCP\Security\ISecureRandom;
use OCP\Session\Exceptions\SessionNotAvailableException;
class AuthSettingsController extends Controller {
/** @var IProvider */
private $tokenProvider;
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/** @var ISession */
private $session;
/** IUserSession */
private $userSession;
/** @var string */
private $uid;
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/** @var ISecureRandom */
private $random;
/** @var IManager */
private $activityManager;
/** @var RemoteWipe */
private $remoteWipe;
/** @var ILogger */
private $logger;
/**
* @param string $appName
* @param IRequest $request
* @param IProvider $tokenProvider
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* @param ISession $session
* @param ISecureRandom $random
* @param string|null $userId
* @param IUserSession $userSession
* @param IManager $activityManager
* @param RemoteWipe $remoteWipe
* @param ILogger $logger
*/
public function __construct(string $appName,
IRequest $request,
IProvider $tokenProvider,
ISession $session,
ISecureRandom $random,
?string $userId,
IUserSession $userSession,
IManager $activityManager,
RemoteWipe $remoteWipe,
ILogger $logger) {
parent::__construct($appName, $request);
$this->tokenProvider = $tokenProvider;
$this->uid = $userId;
$this->userSession = $userSession;
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$this->session = $session;
$this->random = $random;
$this->activityManager = $activityManager;
$this->remoteWipe = $remoteWipe;
$this->logger = $logger;
}
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/**
* @NoAdminRequired
* @NoSubadminRequired
* @PasswordConfirmationRequired
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*
* @param string $name
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* @return JSONResponse
*/
public function create($name) {
try {
$sessionId = $this->session->getId();
} catch (SessionNotAvailableException $ex) {
return $this->getServiceNotAvailableResponse();
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}
if ($this->userSession->getImpersonatingUserID() !== null)
{
return $this->getServiceNotAvailableResponse();
}
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try {
$sessionToken = $this->tokenProvider->getToken($sessionId);
$loginName = $sessionToken->getLoginName();
try {
$password = $this->tokenProvider->getPassword($sessionToken, $sessionId);
} catch (PasswordlessTokenException $ex) {
$password = null;
}
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} catch (InvalidTokenException $ex) {
return $this->getServiceNotAvailableResponse();
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}
$token = $this->generateRandomDeviceToken();
$deviceToken = $this->tokenProvider->generateToken($token, $this->uid, $loginName, $password, $name, IToken::PERMANENT_TOKEN);
$tokenData = $deviceToken->jsonSerialize();
$tokenData['canDelete'] = true;
$tokenData['canRename'] = true;
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$this->publishActivity(Provider::APP_TOKEN_CREATED, $deviceToken->getId(), ['name' => $deviceToken->getName()]);
return new JSONResponse([
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'token' => $token,
'loginName' => $loginName,
'deviceToken' => $tokenData,
]);
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}
/**
* @return JSONResponse
*/
private function getServiceNotAvailableResponse() {
$resp = new JSONResponse();
$resp->setStatus(Http::STATUS_SERVICE_UNAVAILABLE);
return $resp;
}
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/**
* Return a 25 digit device password
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*
* Example: AbCdE-fGhJk-MnPqR-sTwXy-23456
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*
* @return string
*/
private function generateRandomDeviceToken() {
$groups = [];
for ($i = 0; $i < 5; $i++) {
$groups[] = $this->random->generate(5, ISecureRandom::CHAR_HUMAN_READABLE);
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}
return implode('-', $groups);
}
/**
* @NoAdminRequired
* @NoSubadminRequired
*
* @param int $id
* @return array|JSONResponse
*/
public function destroy($id) {
try {
$token = $this->findTokenByIdAndUser($id);
} catch (WipeTokenException $e) {
//continue as we can destroy tokens in wipe
$token = $e->getToken();
} catch (InvalidTokenException $e) {
return new JSONResponse([], Http::STATUS_NOT_FOUND);
}
$this->tokenProvider->invalidateTokenById($this->uid, $token->getId());
$this->publishActivity(Provider::APP_TOKEN_DELETED, $token->getId(), ['name' => $token->getName()]);
return [];
}
/**
* @NoAdminRequired
* @NoSubadminRequired
*
* @param int $id
* @param array $scope
* @param string $name
* @return array|JSONResponse
*/
public function update($id, array $scope, string $name) {
try {
$token = $this->findTokenByIdAndUser($id);
} catch (InvalidTokenException $e) {
return new JSONResponse([], Http::STATUS_NOT_FOUND);
}
$currentName = $token->getName();
if ($scope !== $token->getScopeAsArray()) {
$token->setScope(['filesystem' => $scope['filesystem']]);
$this->publishActivity($scope['filesystem'] ? Provider::APP_TOKEN_FILESYSTEM_GRANTED : Provider::APP_TOKEN_FILESYSTEM_REVOKED, $token->getId(), ['name' => $currentName]);
}
if ($token instanceof INamedToken && $name !== $currentName) {
$token->setName($name);
$this->publishActivity(Provider::APP_TOKEN_RENAMED, $token->getId(), ['name' => $currentName, 'newName' => $name]);
}
$this->tokenProvider->updateToken($token);
return [];
}
/**
* @param string $subject
* @param int $id
* @param array $parameters
*/
private function publishActivity(string $subject, int $id, array $parameters = []): void {
$event = $this->activityManager->generateEvent();
$event->setApp('settings')
->setType('security')
->setAffectedUser($this->uid)
->setAuthor($this->uid)
->setSubject($subject, $parameters)
->setObject('app_token', $id, 'App Password');
try {
$this->activityManager->publish($event);
} catch (BadMethodCallException $e) {
$this->logger->warning('could not publish activity');
$this->logger->logException($e);
}
}
/**
* Find a token by given id and check if uid for current session belongs to this token
*
* @param int $id
* @return IToken
* @throws InvalidTokenException
* @throws \OC\Authentication\Exceptions\ExpiredTokenException
*/
private function findTokenByIdAndUser(int $id): IToken {
$token = $this->tokenProvider->getTokenById($id);
if ($token->getUID() !== $this->uid) {
throw new InvalidTokenException('This token does not belong to you!');
}
return $token;
}
/**
* @NoAdminRequired
* @NoSubadminRequired
* @PasswordConfirmationRequired
*
* @param int $id
* @return JSONResponse
* @throws InvalidTokenException
* @throws \OC\Authentication\Exceptions\ExpiredTokenException
*/
public function wipe(int $id): JSONResponse {
if (!$this->remoteWipe->markTokenForWipe($id)) {
return new JSONResponse([], Http::STATUS_BAD_REQUEST);
}
return new JSONResponse([]);
}
}