FrontendFormProtection.php

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<?php
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
namespace ‪TYPO3\CMS\Core\FormProtection;
 
use ‪TYPO3\CMS\Core\Error\Exception;
use ‪TYPO3\CMS\Frontend\Authentication\FrontendUserAuthentication;
 
class ‪FrontendFormProtection extends ‪AbstractFormProtection
{
    protected ‪$frontendUser;
 
    public function ‪__construct(‪FrontendUserAuthentication ‪$frontendUser, \Closure ‪$validationFailedCallback = null)
    {
        $this->frontendUser = ‪$frontendUser;
        $this->validationFailedCallback = ‪$validationFailedCallback;
        if (!$this->‪isAuthorizedFrontendSession()) {
            throw new ‪Exception('A front-end form protection may only be instantiated if there is an active front-end session.', 1460975777);
        }
    }
 
    protected function ‪retrieveSessionToken()
    {
        $this->sessionToken = $this->frontendUser->getSessionData('formProtectionSessionToken');
        if (empty($this->sessionToken)) {
            $this->sessionToken = $this->‪generateSessionToken();
            $this->‪persistSessionToken();
        }
        return ‪$this->sessionToken;
    }
 
    public function ‪persistSessionToken()
    {
        $this->frontendUser->setAndSaveSessionData('formProtectionSessionToken', $this->sessionToken);
    }
 
    protected function ‪isAuthorizedFrontendSession()
    {
        return !empty($this->frontendUser->user['uid']);
    }
}