server/apps/files_external/controller/globalstoragescontroller.php
Robin McCorkell 272a46ebe1 Authentication mechanisms for external storage backends
A backend can now specify generic authentication schemes that it
supports, instead of specifying the parameters for its authentication
method directly. This allows multiple authentication mechanisms to be
implemented for a single scheme, providing altered functionality.

This commit introduces the backend framework for this feature, and so at
this point the UI will be broken as the frontend does not specify the
required information.

Terminology:
 - authentication scheme
    Parameter interface for the authentication method. A backend
    supporting the 'password' scheme accepts two parameters, 'user' and
    'password'.
 - authentication mechanism
    Specific mechanism implementing a scheme. Basic mechanisms may
    forward configuration options directly to the backend, more advanced
    ones may lookup parameters or retrieve them from the session

New dropdown selector for external storage configurations to select the
authentication mechanism to be used.

Authentication mechanisms can have visibilities, just like backends.
The API was extended too to make it easier to add/remove visibilities.
In addition, the concept of 'allowed visibility' has been introduced, so
a backend/auth mechanism can force a maximum visibility level (e.g.
Local storage type) that cannot be overridden by configuration in the
web UI.

An authentication mechanism is a fully instantiated implementation. This
allows an implementation to have dependencies injected into it, e.g. an
\OCP\IDB for database operations.

When a StorageConfig is being prepared for mounting, the authentication
mechanism implementation has manipulateStorage() called,
which inserts the relevant authentication method options into the
storage ready for mounting.
2015-08-19 10:05:11 +01:00

181 lines
4.4 KiB
PHP

<?php
/**
* @author Vincent Petry <pvince81@owncloud.com>
*
* @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\Controller;
use \OCP\IConfig;
use \OCP\IUserSession;
use \OCP\IRequest;
use \OCP\IL10N;
use \OCP\AppFramework\Http\DataResponse;
use \OCP\AppFramework\Controller;
use \OCP\AppFramework\Http;
use \OCA\Files_external\Service\GlobalStoragesService;
use \OCA\Files_external\NotFoundException;
use \OCA\Files_external\Lib\StorageConfig;
/**
* Global storages controller
*/
class GlobalStoragesController extends StoragesController {
/**
* Creates a new global storages controller.
*
* @param string $AppName application name
* @param IRequest $request request object
* @param IL10N $l10n l10n service
* @param GlobalStoragesService $globalStoragesService storage service
*/
public function __construct(
$AppName,
IRequest $request,
IL10N $l10n,
GlobalStoragesService $globalStoragesService
) {
parent::__construct(
$AppName,
$request,
$l10n,
$globalStoragesService
);
}
/**
* Create an external storage entry.
*
* @param string $mountPoint storage mount point
* @param string $backendClass backend class name
* @param string $authMechanismClass authentication mechanism class
* @param array $backendOptions backend-specific options
* @param array $mountOptions mount-specific options
* @param array $applicableUsers users for which to mount the storage
* @param array $applicableGroups groups for which to mount the storage
* @param int $priority priority
*
* @return DataResponse
*/
public function create(
$mountPoint,
$backendClass,
$authMechanismClass,
$backendOptions,
$mountOptions,
$applicableUsers,
$applicableGroups,
$priority
) {
$newStorage = $this->createStorage(
$mountPoint,
$backendClass,
$authMechanismClass,
$backendOptions,
$mountOptions,
$applicableUsers,
$applicableGroups,
$priority
);
if ($newStorage instanceof DataResponse) {
return $newStorage;
}
$response = $this->validate($newStorage);
if (!empty($response)) {
return $response;
}
$newStorage = $this->service->addStorage($newStorage);
$this->updateStorageStatus($newStorage);
return new DataResponse(
$newStorage,
Http::STATUS_CREATED
);
}
/**
* Update an external storage entry.
*
* @param int $id storage id
* @param string $mountPoint storage mount point
* @param string $backendClass backend class name
* @param string $authMechanismClass authentication mechansim class
* @param array $backendOptions backend-specific options
* @param array $mountOptions mount-specific options
* @param array $applicableUsers users for which to mount the storage
* @param array $applicableGroups groups for which to mount the storage
* @param int $priority priority
*
* @return DataResponse
*/
public function update(
$id,
$mountPoint,
$backendClass,
$authMechanismClass,
$backendOptions,
$mountOptions,
$applicableUsers,
$applicableGroups,
$priority
) {
$storage = $this->createStorage(
$mountPoint,
$backendClass,
$authMechanismClass,
$backendOptions,
$mountOptions,
$applicableUsers,
$applicableGroups,
$priority
);
if ($storage instanceof DataResponse) {
return $storage;
}
$storage->setId($id);
$response = $this->validate($storage);
if (!empty($response)) {
return $response;
}
try {
$storage = $this->service->updateStorage($storage);
} catch (NotFoundException $e) {
return new DataResponse(
[
'message' => (string)$this->l10n->t('Storage with id "%i" not found', array($id))
],
Http::STATUS_NOT_FOUND
);
}
$this->updateStorageStatus($storage);
return new DataResponse(
$storage,
Http::STATUS_OK
);
}
}