149 lines
3.7 KiB
PHP
149 lines
3.7 KiB
PHP
<?php
|
|
declare(strict_types=1);
|
|
/**
|
|
* @copyright Copyright (c) 2016 Lukas Reschke <lukas@statuscode.ch>
|
|
*
|
|
* @author Bjoern Schiessle <bjoern@schiessle.org>
|
|
* @author Joas Schilling <coding@schilljs.com>
|
|
* @author Lukas Reschke <lukas@statuscode.ch>
|
|
*
|
|
* @license GNU AGPL version 3 or any later version
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* 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
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
namespace OC\Security\IdentityProof;
|
|
|
|
use OC\Files\AppData\Factory;
|
|
use OCP\Files\IAppData;
|
|
use OCP\IConfig;
|
|
use OCP\IUser;
|
|
use OCP\Security\ICrypto;
|
|
|
|
class Manager {
|
|
/** @var IAppData */
|
|
private $appData;
|
|
/** @var ICrypto */
|
|
private $crypto;
|
|
/** @var IConfig */
|
|
private $config;
|
|
|
|
/**
|
|
* @param Factory $appDataFactory
|
|
* @param ICrypto $crypto
|
|
* @param IConfig $config
|
|
*/
|
|
public function __construct(Factory $appDataFactory,
|
|
ICrypto $crypto,
|
|
IConfig $config
|
|
) {
|
|
$this->appData = $appDataFactory->get('identityproof');
|
|
$this->crypto = $crypto;
|
|
$this->config = $config;
|
|
}
|
|
|
|
/**
|
|
* Calls the openssl functions to generate a public and private key.
|
|
* In a separate function for unit testing purposes.
|
|
*
|
|
* @return array [$publicKey, $privateKey]
|
|
*/
|
|
protected function generateKeyPair(): array {
|
|
$config = [
|
|
'digest_alg' => 'sha512',
|
|
'private_key_bits' => 2048,
|
|
];
|
|
|
|
// Generate new key
|
|
$res = openssl_pkey_new($config);
|
|
openssl_pkey_export($res, $privateKey);
|
|
|
|
// Extract the public key from $res to $pubKey
|
|
$publicKey = openssl_pkey_get_details($res);
|
|
$publicKey = $publicKey['key'];
|
|
|
|
return [$publicKey, $privateKey];
|
|
}
|
|
|
|
/**
|
|
* Generate a key for a given ID
|
|
* Note: If a key already exists it will be overwritten
|
|
*
|
|
* @param string $id key id
|
|
* @return Key
|
|
*/
|
|
protected function generateKey(string $id): Key {
|
|
list($publicKey, $privateKey) = $this->generateKeyPair();
|
|
|
|
// Write the private and public key to the disk
|
|
try {
|
|
$this->appData->newFolder($id);
|
|
} catch (\Exception $e) {}
|
|
$folder = $this->appData->getFolder($id);
|
|
$folder->newFile('private')
|
|
->putContent($this->crypto->encrypt($privateKey));
|
|
$folder->newFile('public')
|
|
->putContent($publicKey);
|
|
|
|
return new Key($publicKey, $privateKey);
|
|
}
|
|
|
|
/**
|
|
* Get key for a specific id
|
|
*
|
|
* @param string $id
|
|
* @return Key
|
|
*/
|
|
protected function retrieveKey(string $id): Key {
|
|
try {
|
|
$folder = $this->appData->getFolder($id);
|
|
$privateKey = $this->crypto->decrypt(
|
|
$folder->getFile('private')->getContent()
|
|
);
|
|
$publicKey = $folder->getFile('public')->getContent();
|
|
return new Key($publicKey, $privateKey);
|
|
} catch (\Exception $e) {
|
|
return $this->generateKey($id);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get public and private key for $user
|
|
*
|
|
* @param IUser $user
|
|
* @return Key
|
|
*/
|
|
public function getKey(IUser $user): Key {
|
|
$uid = $user->getUID();
|
|
return $this->retrieveKey('user-' . $uid);
|
|
}
|
|
|
|
/**
|
|
* Get instance wide public and private key
|
|
*
|
|
* @return Key
|
|
* @throws \RuntimeException
|
|
*/
|
|
public function getSystemKey(): Key {
|
|
$instanceId = $this->config->getSystemValue('instanceid', null);
|
|
if ($instanceId === null) {
|
|
throw new \RuntimeException('no instance id!');
|
|
}
|
|
return $this->retrieveKey('system-' . $instanceId);
|
|
}
|
|
|
|
|
|
}
|