138 lines
3.3 KiB
PHP
138 lines
3.3 KiB
PHP
<?php
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/**
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*
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*
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program 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 as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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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
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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\TwoFactorBackupCodes\Service;
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use OCA\TwoFactorBackupCodes\Db\BackupCode;
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use OCA\TwoFactorBackupCodes\Db\BackupCodeMapper;
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use OCA\TwoFactorBackupCodes\Event\CodesGenerated;
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use OCP\EventDispatcher\IEventDispatcher;
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use OCP\IUser;
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use OCP\Security\IHasher;
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use OCP\Security\ISecureRandom;
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class BackupCodeStorage {
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private static $CODE_LENGTH = 16;
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/** @var BackupCodeMapper */
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private $mapper;
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/** @var IHasher */
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private $hasher;
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/** @var ISecureRandom */
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private $random;
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/** @var IEventDispatcher */
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private $eventDispatcher;
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public function __construct(BackupCodeMapper $mapper,
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ISecureRandom $random,
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IHasher $hasher,
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IEventDispatcher $eventDispatcher) {
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$this->mapper = $mapper;
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$this->hasher = $hasher;
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$this->random = $random;
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$this->eventDispatcher = $eventDispatcher;
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}
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/**
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* @param IUser $user
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* @return string[]
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*/
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public function createCodes(IUser $user, $number = 10) {
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$result = [];
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// Delete existing ones
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$this->mapper->deleteCodes($user);
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$uid = $user->getUID();
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foreach (range(1, min([$number, 20])) as $i) {
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$code = $this->random->generate(self::$CODE_LENGTH, ISecureRandom::CHAR_HUMAN_READABLE);
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$dbCode = new BackupCode();
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$dbCode->setUserId($uid);
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$dbCode->setCode($this->hasher->hash($code));
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$dbCode->setUsed(0);
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$this->mapper->insert($dbCode);
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$result[] = $code;
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}
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$this->eventDispatcher->dispatch(CodesGenerated::class, new CodesGenerated($user));
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return $result;
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}
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/**
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* @param IUser $user
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* @return bool
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*/
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public function hasBackupCodes(IUser $user) {
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$codes = $this->mapper->getBackupCodes($user);
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return count($codes) > 0;
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}
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/**
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* @param IUser $user
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* @return array
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*/
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public function getBackupCodesState(IUser $user) {
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$codes = $this->mapper->getBackupCodes($user);
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$total = count($codes);
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$used = 0;
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array_walk($codes, function (BackupCode $code) use (&$used) {
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if (1 === (int)$code->getUsed()) {
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$used++;
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}
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});
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return [
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'enabled' => $total > 0,
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'total' => $total,
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'used' => $used,
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];
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}
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/**
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* @param IUser $user
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* @param string $code
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* @return bool
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*/
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public function validateCode(IUser $user, $code) {
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$dbCodes = $this->mapper->getBackupCodes($user);
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foreach ($dbCodes as $dbCode) {
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if (0 === (int)$dbCode->getUsed() && $this->hasher->verify($code, $dbCode->getCode())) {
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$dbCode->setUsed(1);
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$this->mapper->update($dbCode);
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return true;
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}
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}
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return false;
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}
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}
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