Merge branch 'dev/migrate-2fa' into 'main'

		<personal>OCA\EcloudAccounts\Settings\BetaUserSetting</personal>

		<personal-section>OCA\EcloudAccounts\Settings\BetaSection</personal-section>

	</settings>

    <commands>

        <command>OCA\EcloudAccounts\Command\Migrate2FASecrets</command>

    </commands>

</info>

<?php

declare(strict_types=1);

namespace OCA\EcloudAccounts\Command;

use Symfony\Component\Console\Command\Command;

use Symfony\Component\Console\Input\InputOption;

use Symfony\Component\Console\Input\InputInterface;

use Symfony\Component\Console\Output\OutputInterface;

use OCP\Security\ICrypto;

use OCP\IDBConnection;

use OCP\IUserManager;

use OCP\IUser;

use OCP\IConfig;

use OCA\EcloudAccounts\Db\SSOMapper;

use OCA\EcloudAccounts\Exception\DbConnectionParamsException;

use Doctrine\DBAL\DriverManager;

use Doctrine\DBAL\Connection;

class Migrate2FASecrets extends Command {

	private SSOMapper $ssoMapper;

	private IDBConnection $dbConn;

	private Connection $ssoDbConn;

	private ICrypto $crypto;

	private IUserManager $userManager;

	private OutputInterface $commandOutput;

	private IConfig $config;

	private const TOTP_SECRET_TABLE = 'twofactor_totp_secrets';

	private const USER_LABELS = [

		'en' => 'Murena Cloud 2FA',

		'es' => 'Murena Cloud 2FA',

		'de' => 'Murena Cloud 2FA',

		'it' => 'Murena Cloud 2FA',

		'fr' => 'Murena Cloud 2FA',

	];

	public function __construct(IDBConnection $dbConn, ICrypto $crypto, SSOMapper $ssoMapper, IUserManager $userManager, IConfig $config) {

		$this->ssoMapper = $ssoMapper;

		$this->userManager = $userManager;

		$this->dbConn = $dbConn;

		$this->crypto = $crypto;

		$this->config = $config;

		parent::__construct();

	}

	protected function configure(): void {

		$this

				->setName('ecloud-accounts:migrate-2fa-secrets')

				->setDescription('Migrates 2FA secrets to SSO database')

				->addOption(

					'users',

					null,

					InputOption::VALUE_OPTIONAL,

					'comma separated list of users',

					''

				)

				->addOption(

					'sso-db-name',

					null,

					InputOption::VALUE_REQUIRED,

					'SSO database name',

				)

				->addOption(

					'sso-db-user',

					null,

					InputOption::VALUE_REQUIRED,

					'SSO database user',

				)

				->addOption(

					'sso-db-password',

					null,

					InputOption::VALUE_REQUIRED,

					'SSO database password',

				)

				->addOption(

					'sso-db-host',

					null,

					InputOption::VALUE_REQUIRED,

					'SSO database host',

				)

				->addOption(

					'sso-db-port',

					null,

					InputOption::VALUE_REQUIRED,

					'SSO database port',

					3306

				);

	}

	protected function execute(InputInterface $input, OutputInterface $output): int {

		try {

			$this->commandOutput = $output;

			$dbName = $input->getOption('sso-db-name');

			$dbHost = $input->getOption('sso-db-host');

			$dbPort = $input->getOption('sso-db-port');

			$dbPassword = $input->getOption('sso-db-password');

			$dbUser = $input->getOption('sso-db-user');

			$this->ssoDbConn = $this->getDatabaseConnection($dbName, $dbHost, $dbPort, $dbPassword, $dbUser);

			$usernames = [];

			$usernameList = $input->getOption('users');

			if (!empty($usernameList)) {

				$usernames = explode(',', $usernameList);

			}

			$this->migrateUsers($usernames);

			return 0;

		} catch (\Exception $e) {

			$this->commandOutput->writeln($e->getMessage());

			return 1;

		}

	}

	/**

	 * Migrate user secrets to the SSO database

	 *

	 * @return void

	 */

	private function migrateUsers(array $usernames = []) : void {

		$entries = [];

		$qb = $this->dbConn->getQueryBuilder();

		$qb->select('user_id', 'secret')

			->from(self::TOTP_SECRET_TABLE);

		if (!empty($usernames)) {

			$qb->where('user_id IN (:usernames)')

				->setParameter('usernames', implode(',', $usernames));

		}

		$result = $qb->execute();

		while ($row = $result->fetch()) {

			try {

				$username = (string) $row['user_id'];

				if (!$this->userManager->get($username) instanceof IUser) {

					throw new \Exception('No user found in nextcloud with given username');

				}

				$secret = (string) $row['secret'];

				$decryptedSecret = $this->crypto->decrypt($secret);

				$ssoUserId = $this->ssoMapper->getUserId($username, $this->ssoDbConn);

				if (empty($ssoUserId)) {

					throw new \Exception('Does not exist in SSO database');

				}

				$language = $this->config->getUserValue($uid, 'core', 'lang', 'en');

				if (!array_key_exists($language, self::USER_LABELS)) {

					$language = 'en';

				}

				$entry = $this->getSSOSecretEntry($decryptedSecret, $ssoUserId, $language);

				$this->ssoMapper->insertCredential($entry, $this->ssoDbConn);

			} catch(\Exception $e) {

				$this->commandOutput->writeln('Error inserting entry for user ' . $username . ' message: ' . $e->getMessage());

				continue;

			}

		}

	}

	/**

	 * Create secret entry compatible with Keycloak schema

	 *

	 * @return array

	 */

	private function getSSOSecretEntry(string $secret, string $ssoUserId, string $language) : array {

		// Create the random UUID from the sso user ID so multiple entries of same credential do not happen

		$id = $this->randomUUID(substr($ssoUserId, 0, 16));

		$userLabel = self::USER_LABELS[$language];

		$credentialEntry = [

			'ID' => $id,

			'USER_ID' => $ssoUserId,

			'USER_LABEL' => 'Murena Cloud 2FA',

			'TYPE' => 'otp',

			'SECRET_DATA' => json_encode([

				'value' => $secret

			]),

			'CREDENTIAL_DATA' => json_encode([

				'subType' => 'nextcloud_totp',

				'period' => 30,

				'digits' => 6,

				'algorithm' => 'HmacSHA1',

			]),

		];

		foreach ($credentialEntry as $key => &$value) {

			$value = "'" . $value . "'";

		}

		$credentialEntry['CREATED_DATE'] = round(microtime(true) * 1000);

		$credentialEntry['PRIORITY'] = 10;

		return $credentialEntry;

	}

	/**

	 * Attempt to connect to a non-NC database

	 *

	 * @return Connection

	 */

	private function getDatabaseConnection(string $dbName, string $dbHost, int $dbPort, string $dbPassword, string $dbUser) : Connection {

		if (empty($dbName) || empty($dbHost) || empty($dbPort) || empty($dbPassword) || empty($dbUser)) {

			throw new DbConnectionParamsException('Invalid database parameters!');

		}

		$params = [

			'dbname' => $dbName,

			'user' => $dbUser,

			'password' => $dbPassword,

			'host' => $dbHost,

			'port' => $dbPort,

			'driver' => 'pdo_mysql'

		];

		return  DriverManager::getConnection($params);

	}

	/**

	 *	From https://www.uuidgenerator.net/dev-corner/php

	 *	As keycloak generates random UUIDs using the java.util.UUID class which is RFC 4122 compliant

	 *

	 *   @return string

	 */

	private function randomUUID($data = null) : string {

		// Generate 16 bytes (128 bits) of random data or use the data passed into the function.

		$data = $data ?? random_bytes(16);

		assert(strlen($data) == 16);

		// Set version to 0100

		$data[6] = chr(ord($data[6]) & 0x0f | 0x40);

		// Set bits 6-7 to 10

		$data[8] = chr(ord($data[8]) & 0x3f | 0x80);

		// Output the 36 character UUID.

		return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));

	}

}

<?php

namespace OCA\EcloudAccounts\Db;

use OCP\IConfig;

use OCP\ILogger;

use Doctrine\DBAL\Connection;

class SSOMapper {

	private $config;

	private $logger;

	private const USER_ATTRIBUTE_TABLE = 'USER_ATTRIBUTE';

	private const CREDENTIAL_TABLE = 'CREDENTIAL';

	public function __construct(IConfig $config, ILogger $logger) {

		$this->config = $config;

		$this->logger = $logger;

	}

	public function getUserId(string $username, Connection $conn) : string {

		$qb = $conn->createQueryBuilder();

		$qb->select('USER_ID')

			->from(self::USER_ATTRIBUTE_TABLE)

			->where('NAME = "LDAP_ID"')

			->andWhere('VALUE = :username');

		$qb->setParameter('username', $username);

		$result = $qb->execute();

		return (string) $result->fetchOne();

	}

	public function insertCredential(array $entry, Connection $conn) {

		$qb = $conn->createQueryBuilder();

		$qb->insert(self::CREDENTIAL_TABLE)

			->values($entry)

			->execute();

	}

}