friendica/src/Module/Settings/TwoFactor/Recovery.php

<?php

namespace Friendica\Module\Settings\TwoFactor;

use Friendica\Core\L10n;
use Friendica\Core\Renderer;
use Friendica\DI;
use Friendica\Model\TwoFactor\RecoveryCode;
use Friendica\Module\BaseSettingsModule;
use Friendica\Module\Security\Login;

/**
 * // Page 3: 2FA enabled but not verified, show recovery codes
 *
 * @package Friendica\Module\TwoFactor
 */
class Recovery extends BaseSettingsModule
{
	public static function init(array $parameters = [])
	{
		if (!local_user()) {
			return;
		}

		$secret = DI::pConfig()->get(local_user(), '2fa', 'secret');

		if (!$secret) {
			DI::baseUrl()->redirect('settings/2fa');
		}

		if (!self::checkFormSecurityToken('settings_2fa_password', 't')) {
			notice(L10n::t('Please enter your password to access this page.'));
			DI::baseUrl()->redirect('settings/2fa');
		}
	}

	public static function post(array $parameters = [])
	{
		if (!local_user()) {
			return;
		}

		if (!empty($_POST['action'])) {
			self::checkFormSecurityTokenRedirectOnError('settings/2fa/recovery', 'settings_2fa_recovery');

			if ($_POST['action'] == 'regenerate') {
				RecoveryCode::regenerateForUser(local_user());
				notice(L10n::t('New recovery codes successfully generated.'));
				DI::baseUrl()->redirect('settings/2fa/recovery?t=' . self::getFormSecurityToken('settings_2fa_password'));
			}
		}
	}

	public static function content(array $parameters = [])
	{
		if (!local_user()) {
			return Login::form('settings/2fa/recovery');
		}

		parent::content($parameters);

		if (!RecoveryCode::countValidForUser(local_user())) {
			RecoveryCode::generateForUser(local_user());
		}

		$recoveryCodes = RecoveryCode::getListForUser(local_user());

		$verified = DI::pConfig()->get(local_user(), '2fa', 'verified');
		
		return Renderer::replaceMacros(Renderer::getMarkupTemplate('settings/twofactor/recovery.tpl'), [
			'$form_security_token'     => self::getFormSecurityToken('settings_2fa_recovery'),
			'$password_security_token' => self::getFormSecurityToken('settings_2fa_password'),

			'$title'              => L10n::t('Two-factor recovery codes'),
			'$help_label'         => L10n::t('Help'),
			'$message'            => L10n::t('<p>Recovery codes can be used to access your account in the event you lose access to your device and cannot receive two-factor authentication codes.</p><p><strong>Put these in a safe spot!</strong> If you lose your device and don’t have the recovery codes you will lose access to your account.</p>'),
			'$recovery_codes'     => $recoveryCodes,
			'$regenerate_message' => L10n::t('When you generate new recovery codes, you must copy the new codes. Your old codes won’t work anymore.'),
			'$regenerate_label'   => L10n::t('Generate new recovery codes'),
			'$verified'           => $verified,
			'$verify_label'       => L10n::t('Next: Verification'),
		]);
	}
}