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<?php
/**
* @author Robin McCorkell <rmccorkell@karoshi.org.uk>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @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 OCA\Files_External\Service;
use \OCP\IConfig;
use \OCA\Files_External\Lib\Backend\Backend;
/**
* Service class to manage backend definitions
*/
class BackendService {
/** Visibility constants for VisibilityTrait */
const VISIBILITY_NONE = 0;
const VISIBILITY_PERSONAL = 1;
const VISIBILITY_ADMIN = 2;
//const VISIBILITY_ALIENS = 4;
const VISIBILITY_DEFAULT = 3; // PERSONAL | ADMIN
/** Priority constants for PriorityTrait */
const PRIORITY_DEFAULT = 100;
/** @var IConfig */
protected $config;
/** @var bool */
private $userMountingAllowed = true;
/** @var string[] */
private $userMountingBackends = [];
/** @var Backend[] */
private $backends = [];
/**
* @param IConfig $config
*/
public function __construct(
IConfig $config
) {
$this->config = $config;
// Load config values
if ($this->config->getAppValue('files_external', 'allow_user_mounting', 'yes') !== 'yes') {
$this->userMountingAllowed = false;
}
$this->userMountingBackends = explode(',',
$this->config->getAppValue('files_external', 'user_mounting_backends', '')
);
}
/**
* Register a backend
*
* @param Backend $backend
*/
public function registerBackend(Backend $backend) {
if (!$this->isAllowedUserBackend($backend)) {
$backend->removeVisibility(BackendService::VISIBILITY_PERSONAL);
}
$this->backends[$backend->getClass()] = $backend;
}
/**
* @param Backend[] $backends
*/
public function registerBackends(array $backends) {
foreach ($backends as $backend) {
$this->registerBackend($backend);
}
}
/**
* Get all backends
*
* @return Backend[]
*/
public function getBackends() {
return $this->backends;
}
/**
* Get all available backends
*
* @return Backend[]
*/
public function getAvailableBackends() {
return array_filter($this->getBackends(), function($backend) {
return empty($backend->checkDependencies());
});
}
/**
* Get backends visible for $visibleFor
*
* @param int $visibleFor
* @return Backend[]
*/
public function getBackendsVisibleFor($visibleFor) {
return array_filter($this->getAvailableBackends(), function($backend) use ($visibleFor) {
return $backend->isVisibleFor($visibleFor);
});
}
/**
* Get backends allowed to be visible for $visibleFor
*
* @param int $visibleFor
* @return Backend[]
*/
public function getBackendsAllowedVisibleFor($visibleFor) {
return array_filter($this->getAvailableBackends(), function($backend) use ($visibleFor) {
return $backend->isAllowedVisibleFor($visibleFor);
});
}
/**
* @param string $class Backend class name
* @return Backend|null
*/
public function getBackend($class) {
if (isset($this->backends[$class])) {
return $this->backends[$class];
}
return null;
}
/**
* @return bool
*/
public function isUserMountingAllowed() {
return $this->userMountingAllowed;
}
/**
* Check a backend if a user is allowed to mount it
*
* @param Backend $backend
* @return bool
*/
protected function isAllowedUserBackend(Backend $backend) {
if ($this->userMountingAllowed &&
in_array($backend->getClass(), $this->userMountingBackends)
) {
return true;
}
return false;
}
}
|
