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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Robin McCorkell <robin@mccorkell.me.uk>
*
* @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 OC\Security;
use OCP\Security\ICrypto;
use OCP\IDBConnection;
use OCP\Security\ICredentialsManager;
/**
* Store and retrieve credentials for external services
*
* @package OC\Security
*/
class CredentialsManager implements ICredentialsManager {
const DB_TABLE = 'credentials';
/** @var ICrypto */
protected $crypto;
/** @var IDBConnection */
protected $dbConnection;
/**
* @param ICrypto $crypto
* @param IDBConnection $dbConnection
*/
public function __construct(ICrypto $crypto, IDBConnection $dbConnection) {
$this->crypto = $crypto;
$this->dbConnection = $dbConnection;
}
/**
* Store a set of credentials
*
* @param string|null $userId Null for system-wide credentials
* @param string $identifier
* @param mixed $credentials
*/
public function store($userId, $identifier, $credentials) {
$value = $this->crypto->encrypt(json_encode($credentials));
$this->dbConnection->setValues(self::DB_TABLE, [
'user' => $userId,
'identifier' => $identifier,
], [
'credentials' => $value,
]);
}
/**
* Retrieve a set of credentials
*
* @param string|null $userId Null for system-wide credentials
* @param string $identifier
* @return mixed
*/
public function retrieve($userId, $identifier) {
$qb = $this->dbConnection->getQueryBuilder();
$qb->select('credentials')
->from(self::DB_TABLE)
->where($qb->expr()->eq('user', $qb->createNamedParameter($userId)))
->andWhere($qb->expr()->eq('identifier', $qb->createNamedParameter($identifier)))
;
$result = $qb->execute()->fetch();
if (!$result) {
return null;
}
$value = $result['credentials'];
return json_decode($this->crypto->decrypt($value), true);
}
/**
* Delete a set of credentials
*
* @param string|null $userId Null for system-wide credentials
* @param string $identifier
* @return int rows removed
*/
public function delete($userId, $identifier) {
$qb = $this->dbConnection->getQueryBuilder();
$qb->delete(self::DB_TABLE)
->where($qb->expr()->eq('user', $qb->createNamedParameter($userId)))
->andWhere($qb->expr()->eq('identifier', $qb->createNamedParameter($identifier)))
;
return $qb->execute();
}
/**
* Erase all credentials stored for a user
*
* @param string $userId
* @return int rows removed
*/
public function erase($userId) {
$qb = $this->dbConnection->getQueryBuilder();
$qb->delete(self::DB_TABLE)
->where($qb->expr()->eq('user', $qb->createNamedParameter($userId)))
;
return $qb->execute();
}
}