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75 lines
2.1 KiB
PHP
75 lines
2.1 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2017-2024 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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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', $l->t('Public key')),
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(new DefinitionParameter('private_key', 'private_key'))
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->setType(DefinitionParameter::VALUE_HIDDEN),
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])
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->addCustomJs('public_key')
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;
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}
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/**
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* @return void
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*/
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public function manipulateStorageConfig(StorageConfig &$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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