friendica-github/src/Module/Security/TwoFactor/Verify.php

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<?php
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/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
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*
* @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 <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Module\Security\TwoFactor;
use Friendica\BaseModule;
use Friendica\Core\Renderer;
use Friendica\Core\Session;
use Friendica\DI;
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use Friendica\Model\User;
use PragmaRX\Google2FA\Google2FA;
use Friendica\Security\TwoFactor;
/**
* Page 1: Authenticator code verification
*
* @package Friendica\Module\TwoFactor
*/
class Verify extends BaseModule
{
private static $errors = [];
public static function post(array $parameters = [])
{
if (!local_user()) {
return;
}
if (($_POST['action'] ?? '') == 'verify') {
self::checkFormSecurityTokenRedirectOnError('2fa', 'twofactor_verify');
$a = DI::app();
$code = $_POST['verify_code'] ?? '';
$valid = (new Google2FA())->verifyKey(DI::pConfig()->get(local_user(), '2fa', 'secret'), $code);
// The same code can't be used twice even if it's valid
if ($valid && Session::get('2fa') !== $code) {
Session::set('2fa', $code);
// Trust this browser feature
if (!empty($_REQUEST['trust_browser'])) {
$trustedBrowserFactory = new TwoFactor\Factory\TrustedBrowser(DI::logger());
$trustedBrowserRepository = new TwoFactor\Repository\TrustedBrowser(DI::dba(), DI::logger(), $trustedBrowserFactory);
$trustedBrowser = $trustedBrowserFactory->createForUserWithUserAgent(local_user(), $_SERVER['HTTP_USER_AGENT']);
$trustedBrowserRepository->save($trustedBrowser);
// The string is sent to the browser to be sent back with each request
DI::cookie()->set('trusted', $trustedBrowser->cookie_hash);
}
// Resume normal login workflow
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DI::auth()->setForUser($a, User::getById($a->getUserId()), true, true);
} else {
self::$errors[] = DI::l10n()->t('Invalid code, please retry.');
}
}
}
public static function content(array $parameters = [])
{
if (!local_user()) {
DI::baseUrl()->redirect();
}
// Already authenticated with 2FA token
if (Session::get('2fa')) {
DI::baseUrl()->redirect();
}
return Renderer::replaceMacros(Renderer::getMarkupTemplate('twofactor/verify.tpl'), [
'$form_security_token' => self::getFormSecurityToken('twofactor_verify'),
'$title' => DI::l10n()->t('Two-factor authentication'),
'$message' => DI::l10n()->t('<p>Open the two-factor authentication app on your device to get an authentication code and verify your identity.</p>'),
'$errors_label' => DI::l10n()->tt('Error', 'Errors', count(self::$errors)),
'$errors' => self::$errors,
'$recovery_message' => DI::l10n()->t('Dont have your phone? <a href="%s">Enter a two-factor recovery code</a>', '2fa/recovery'),
'$verify_code' => ['verify_code', DI::l10n()->t('Please enter a code from your authentication app'), '', '', DI::l10n()->t('Required'), 'autofocus autocomplete="off" placeholder="000000"', 'tel'],
'$trust_browser' => ['trust_browser', DI::l10n()->t('This is my two-factor authenticator app device'), !empty($_REQUEST['trust_browser'])],
'$verify_label' => DI::l10n()->t('Verify code and complete login'),
]);
}
}