src/Module/Security/TwoFactor/Verify.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Module\Security\TwoFactor;
  23
  24 use Friendica\BaseModule;
  25 use Friendica\Core\Renderer;
  26 use Friendica\Core\Session;
  27 use Friendica\DI;
  28 use PragmaRX\Google2FA\Google2FA;
  29 use Friendica\Security\TwoFactor;
  30
  31 /**
  32  * Page 1: Authenticator code verification
  33  *
  34  * @package Friendica\Module\TwoFactor
  35  */
  36 class Verify extends BaseModule
  37 {
  38         private static $errors = [];
  39
  40         public static function post(array $parameters = [])
  41         {
  42                 if (!local_user()) {
  43                         return;
  44                 }
  45
  46                 if (($_POST['action'] ?? '') == 'verify') {
  47                         self::checkFormSecurityTokenRedirectOnError('2fa', 'twofactor_verify');
  48
  49                         $a = DI::app();
  50
  51                         $code = $_POST['verify_code'] ?? '';
  52
  53                         $valid = (new Google2FA())->verifyKey(DI::pConfig()->get(local_user(), '2fa', 'secret'), $code);
  54
  55                         // The same code can't be used twice even if it's valid
  56                         if ($valid && Session::get('2fa') !== $code) {
  57                                 Session::set('2fa', $code);
  58
  59                                 // Trust this browser feature
  60                                 if (!empty($_REQUEST['trust_browser'])) {
  61                                         $trustedBrowserFactory = new TwoFactor\Factory\TrustedBrowser(DI::logger());
  62                                         $trustedBrowserRepository = new TwoFactor\Repository\TrustedBrowser(DI::dba(), DI::logger(), $trustedBrowserFactory);
  63
  64                                         $trustedBrowser = $trustedBrowserFactory->createForUserWithUserAgent(local_user(), $_SERVER['HTTP_USER_AGENT']);
  65
  66                                         $trustedBrowserRepository->save($trustedBrowser);
  67
  68                                         // The string is sent to the browser to be sent back with each request
  69                                         DI::cookie()->set('trusted', $trustedBrowser->cookie_hash);
  70                                 }
  71
  72                                 // Resume normal login workflow
  73                                 DI::auth()->setForUser($a, $a->user, true, true);
  74                         } else {
  75                                 self::$errors[] = DI::l10n()->t('Invalid code, please retry.');
  76                         }
  77                 }
  78         }
  79
  80         public static function content(array $parameters = [])
  81         {
  82                 if (!local_user()) {
  83                         DI::baseUrl()->redirect();
  84                 }
  85
  86                 // Already authenticated with 2FA token
  87                 if (Session::get('2fa')) {
  88                         DI::baseUrl()->redirect();
  89                 }
  90
  91                 return Renderer::replaceMacros(Renderer::getMarkupTemplate('twofactor/verify.tpl'), [
  92                         '$form_security_token' => self::getFormSecurityToken('twofactor_verify'),
  93
  94                         '$title'            => DI::l10n()->t('Two-factor authentication'),
  95                         '$message'          => DI::l10n()->t('<p>Open the two-factor authentication app on your device to get an authentication code and verify your identity.</p>'),
  96                         '$errors_label'     => DI::l10n()->tt('Error', 'Errors', count(self::$errors)),
  97                         '$errors'           => self::$errors,
  98                         '$recovery_message' => DI::l10n()->t('Don’t have your phone? <a href="%s">Enter a two-factor recovery code</a>', '2fa/recovery'),
  99                         '$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'],
 100                         '$trust_browser'    => ['trust_browser', DI::l10n()->t('This is my two-factor authenticator app device'), !empty($_REQUEST['trust_browser'])],
 101                         '$verify_label'     => DI::l10n()->t('Verify code and complete login'),
 102                 ]);
 103         }
 104 }