server/apps/files_external/lib/auth/authmechanism.php
Robin McCorkell cc88c5f4b8 Implement more fine-grained external storage permissions model
VisibilityTrait -> PermissionsTrait

PermissionsTrait stores two sets of data, $permissions and
$allowedPermissions (analogous to $visibility and $allowedVisibility of
VisibilityTrait). Each set is a map of user type ('admin' or 'personal')
to permissions (mounting permission, create permission).

The result is that a backend can now be restricted for creation, while
still allowing it to be mounted. This is useful for deprecating backends
or auth mechanisms, preventing new storages being created, while still
allowing existing storages to be mounted.
2015-08-28 17:21:58 +01:00

116 lines
3.2 KiB
PHP

<?php
/**
* @author Robin McCorkell <rmccorkell@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\Lib\Auth;
use \OCA\Files_External\Lib\StorageConfig;
use \OCA\Files_External\Lib\PermissionsTrait;
use \OCA\Files_External\Lib\IdentifierTrait;
use \OCA\Files_External\Lib\FrontendDefinitionTrait;
use \OCA\Files_External\Lib\StorageModifierTrait;
/**
* Authentication mechanism
*
* An authentication mechanism can have services injected during construction,
* such as \OCP\IDB for database operations. This allows an authentication
* mechanism to perform advanced operations based on provided information.
*
* An authenication scheme defines the parameter interface, common to the
* storage implementation, the backend and the authentication mechanism.
* A storage implementation expects parameters according to the authentication
* scheme, which are provided from the authentication mechanism.
*
* This class uses the following traits:
* - PermissionsTrait
* Restrict usage to admin-only/none
* - FrontendDefinitionTrait
* Specify configuration parameters and other definitions
* - StorageModifierTrait
* Object can affect storage mounting
*/
class AuthMechanism implements \JsonSerializable {
/** Standard authentication schemes */
const SCHEME_NULL = 'null';
const SCHEME_BUILTIN = 'builtin';
const SCHEME_PASSWORD = 'password';
const SCHEME_OAUTH1 = 'oauth1';
const SCHEME_OAUTH2 = 'oauth2';
const SCHEME_PUBLICKEY = 'publickey';
const SCHEME_OPENSTACK = 'openstack';
use PermissionsTrait;
use FrontendDefinitionTrait;
use StorageModifierTrait;
use IdentifierTrait;
/** @var string */
protected $scheme;
/**
* Get the authentication scheme implemented
* See self::SCHEME_* constants
*
* @return string
*/
public function getScheme() {
return $this->scheme;
}
/**
* @param string $scheme
* @return self
*/
public function setScheme($scheme) {
$this->scheme = $scheme;
return $this;
}
/**
* Serialize into JSON for client-side JS
*
* @return array
*/
public function jsonSerialize() {
$data = $this->jsonSerializeDefinition();
$data['scheme'] = $this->getScheme();
return $data;
}
/**
* Check if parameters are satisfied in a StorageConfig
*
* @param StorageConfig $storage
* @return bool
*/
public function validateStorage(StorageConfig $storage) {
// does the backend actually support this scheme
$supportedSchemes = $storage->getBackend()->getAuthSchemes();
if (!isset($supportedSchemes[$this->getScheme()])) {
return false;
}
return $this->validateStorageDefinition($storage);
}
}