mirror of https://github.com/nextcloud/server
90 lines
2.7 KiB
PHP
90 lines
2.7 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\Files_External\Lib\Auth\PublicKey;
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use OCA\Files_External\Lib\Auth\AuthMechanism;
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use OCA\Files_External\Lib\DefinitionParameter;
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use OCA\Files_External\Lib\StorageConfig;
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use OCP\IConfig;
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use OCP\IL10N;
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use OCP\IUser;
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use phpseclib\Crypt\RSA as RSACrypt;
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/**
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* RSA public key authentication
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*/
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class RSA extends AuthMechanism {
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/** @var IConfig */
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private $config;
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public function __construct(IL10N $l, IConfig $config) {
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$this->config = $config;
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$this
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->setIdentifier('publickey::rsa')
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->setScheme(self::SCHEME_PUBLICKEY)
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->setText($l->t('RSA public key'))
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->addParameters([
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new DefinitionParameter('user', $l->t('Login')),
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new DefinitionParameter('public_key', $l->t('Public key')),
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(new DefinitionParameter('private_key', 'private_key'))
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->setType(DefinitionParameter::VALUE_HIDDEN),
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])
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->addCustomJs('public_key')
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;
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}
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public function manipulateStorageConfig(StorageConfig &$storage, ?IUser $user = null) {
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$auth = new RSACrypt();
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$auth->setPassword($this->config->getSystemValue('secret', ''));
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if (!$auth->loadKey($storage->getBackendOption('private_key'))) {
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// Add fallback routine for a time where secret was not enforced to be exists
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$auth->setPassword('');
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if (!$auth->loadKey($storage->getBackendOption('private_key'))) {
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throw new \RuntimeException('unable to load private key');
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}
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}
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$storage->setBackendOption('public_key_auth', $auth);
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}
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/**
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* Generate a keypair
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*
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* @param int $keyLenth
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* @return array ['privatekey' => $privateKey, 'publickey' => $publicKey]
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*/
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public function createKey($keyLength) {
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$rsa = new RSACrypt();
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$rsa->setPublicKeyFormat(RSACrypt::PUBLIC_FORMAT_OPENSSH);
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$rsa->setPassword($this->config->getSystemValue('secret', ''));
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if ($keyLength !== 1024 && $keyLength !== 2048 && $keyLength !== 4096) {
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$keyLength = 1024;
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}
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return $rsa->createKey($keyLength);
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}
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}
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