DERHANSEN\SfEventMgt\SpamChecks\ChallengeResponseSpamCheck

Complexity

Total Complexity

2

Size/Duplication

Total Lines	22
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	isFailed()	0	14	2

<?php
declare(strict_types=1);
namespace DERHANSEN\SfEventMgt\SpamChecks;

/*
 * This file is part of the Extension "sf_event_mgt" for TYPO3 CMS.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 */

use DERHANSEN\SfEventMgt\Utility\MiscUtility;

/**
 * ChallengeResponseSpamCheck
 */
class ChallengeResponseSpamCheck extends AbstractSpamCheck
{
    /**
     * Checks, if the cr-response field matches the expected ROT13 encrypted/obfuscated string.
     *
     * @return bool
     */
    public function isFailed(): bool
    {
        if (!isset($this->arguments['registration']['cr-response'])) {
            return true;
        }

        $challenge =  MiscUtility::getSpamCheckChallenge((int)$this->arguments['event']);
        $originalChallenge = $this->configuration['prefix'] . $challenge . $this->configuration['postfix'];

        $expectedResponse = str_rot13($originalChallenge);
        $response = $this->arguments['registration']['cr-response'];

        return $expectedResponse !== $response;
    }
}