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<?php
/**
* @author Lukas Reschke <lukas@owncloud.com>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @copyright Copyright (c) 2016, 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\IUserSession;
use \OC\Files\Filesystem;
use \OCA\Files_external\Lib\StorageConfig;
use \OCA\Files_external\NotFoundException;
/**
* Service class to manage global external storages
*/
class GlobalStoragesService extends StoragesService {
/**
* Triggers $signal for all applicable users of the given
* storage
*
* @param StorageConfig $storage storage data
* @param string $signal signal to trigger
*/
protected function triggerHooks(StorageConfig $storage, $signal) {
// FIXME: Use as expression in empty once PHP 5.4 support is dropped
$applicableUsers = $storage->getApplicableUsers();
$applicableGroups = $storage->getApplicableGroups();
if (empty($applicableUsers) && empty($applicableGroups)) {
// raise for user "all"
$this->triggerApplicableHooks(
$signal,
$storage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_USER,
['all']
);
return;
}
$this->triggerApplicableHooks(
$signal,
$storage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_USER,
$applicableUsers
);
$this->triggerApplicableHooks(
$signal,
$storage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_GROUP,
$applicableGroups
);
}
/**
* Triggers signal_create_mount or signal_delete_mount to
* accomodate for additions/deletions in applicableUsers
* and applicableGroups fields.
*
* @param StorageConfig $oldStorage old storage config
* @param StorageConfig $newStorage new storage config
*/
protected function triggerChangeHooks(StorageConfig $oldStorage, StorageConfig $newStorage) {
// if mount point changed, it's like a deletion + creation
if ($oldStorage->getMountPoint() !== $newStorage->getMountPoint()) {
$this->triggerHooks($oldStorage, Filesystem::signal_delete_mount);
$this->triggerHooks($newStorage, Filesystem::signal_create_mount);
return;
}
$userAdditions = array_diff($newStorage->getApplicableUsers(), $oldStorage->getApplicableUsers());
$userDeletions = array_diff($oldStorage->getApplicableUsers(), $newStorage->getApplicableUsers());
$groupAdditions = array_diff($newStorage->getApplicableGroups(), $oldStorage->getApplicableGroups());
$groupDeletions = array_diff($oldStorage->getApplicableGroups(), $newStorage->getApplicableGroups());
// FIXME: Use as expression in empty once PHP 5.4 support is dropped
// if no applicable were set, raise a signal for "all"
$oldApplicableUsers = $oldStorage->getApplicableUsers();
$oldApplicableGroups = $oldStorage->getApplicableGroups();
if (empty($oldApplicableUsers) && empty($oldApplicableGroups)) {
$this->triggerApplicableHooks(
Filesystem::signal_delete_mount,
$oldStorage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_USER,
['all']
);
}
// trigger delete for removed users
$this->triggerApplicableHooks(
Filesystem::signal_delete_mount,
$oldStorage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_USER,
$userDeletions
);
// trigger delete for removed groups
$this->triggerApplicableHooks(
Filesystem::signal_delete_mount,
$oldStorage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_GROUP,
$groupDeletions
);
// and now add the new users
$this->triggerApplicableHooks(
Filesystem::signal_create_mount,
$newStorage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_USER,
$userAdditions
);
// and now add the new groups
$this->triggerApplicableHooks(
Filesystem::signal_create_mount,
$newStorage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_GROUP,
$groupAdditions
);
// FIXME: Use as expression in empty once PHP 5.4 support is dropped
// if no applicable, raise a signal for "all"
$newApplicableUsers = $newStorage->getApplicableUsers();
$newApplicableGroups = $newStorage->getApplicableGroups();
if (empty($newApplicableUsers) && empty($newApplicableGroups)) {
$this->triggerApplicableHooks(
Filesystem::signal_create_mount,
$newStorage->getMountPoint(),
\OC_Mount_Config::MOUNT_TYPE_USER,
['all']
);
}
}
/**
* Get the visibility type for this controller, used in validation
*
* @return string BackendService::VISIBILITY_* constants
*/
public function getVisibilityType() {
return BackendService::VISIBILITY_ADMIN;
}
protected function isApplicable(StorageConfig $config) {
return true;
}
}
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