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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
*
* @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 OCA\FilesDownloadActivity;
use OCP\IRequest;
use OCP\IUser;
use OCP\IUserSession;
use OCP\Share\IShare;
use OCP\Share\Exceptions\ShareNotFound;
use OCP\Share\IManager;
class CurrentUser {
/** @var IUserSession */
protected $userSession;
/** @var IRequest */
protected $request;
/** @var IManager */
protected $shareManager;
/** @var string */
protected $identifier;
/** @var string|false|null */
protected $sessionUser;
/**
* @param IUserSession $userSession
* @param IRequest $request
* @param IManager $shareManager
*/
public function __construct(IUserSession $userSession, IRequest $request, IManager $shareManager) {
$this->userSession = $userSession;
$this->request = $request;
$this->shareManager = $shareManager;
$this->sessionUser = false;
}
/**
* Get an identifier for the user, session or token
* @return string
*/
public function getUserIdentifier(): string {
if ($this->identifier === null) {
$this->identifier = $this->getUID();
if ($this->identifier === null) {
$this->identifier = $this->getCloudIDFromToken();
if ($this->identifier === null) {
// Nothing worked, fallback to empty string
$this->identifier = '';
}
}
}
return $this->identifier;
}
/**
* Get the current user from the session
* @return string|null
*/
public function getUID(): ?string {
if ($this->sessionUser === false) {
$user = $this->userSession->getUser();
if ($user instanceof IUser) {
$this->sessionUser = (string) $user->getUID();
} else {
$this->sessionUser = null;
}
}
return $this->sessionUser;
}
/**
* Get the cloud ID from the sharing token
* @return string|null
*/
protected function getCloudIDFromToken(): ?string {
if (!empty($this->request->server['PHP_AUTH_USER'])) {
$token = $this->request->server['PHP_AUTH_USER'];
try {
$share = $this->shareManager->getShareByToken($token);
if ($share->getShareType() === IShare::TYPE_REMOTE) {
return $share->getSharedWith();
}
} catch (ShareNotFound $e) {
// No share, use the fallback
}
}
return null;
}
}
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