LinkBrowserController.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\Backend\Controller;
 
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use ‪TYPO3\CMS\Backend\Utility\BackendUtility;
use ‪TYPO3\CMS\Core\Http\JsonResponse;
use ‪TYPO3\CMS\Core\LinkHandling\LinkService;
use ‪TYPO3\CMS\Core\Page\PageRenderer;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
use ‪TYPO3\CMS\Core\Utility\HttpUtility;
use ‪TYPO3\CMS\Frontend\Service\TypoLinkCodecService;
use ‪TYPO3\CMS\Recordlist\Controller\AbstractLinkBrowserController;
 
class ‪LinkBrowserController extends ‪AbstractLinkBrowserController
{
    protected function ‪initCurrentUrl()
    {
        $currentLink = isset($this->parameters['currentValue']) ? trim($this->parameters['currentValue']) : '';
        ‪$currentLinkParts = GeneralUtility::makeInstance(TypoLinkCodecService::class)->decode($currentLink);
        ‪$currentLinkParts['params'] = ‪$currentLinkParts['additionalParams'];
        unset(‪$currentLinkParts['additionalParams']);
 
        if (!empty(‪$currentLinkParts['url'])) {
            $linkService = GeneralUtility::makeInstance(LinkService::class);
            $data = $linkService->resolve(‪$currentLinkParts['url']);
            ‪$currentLinkParts['type'] = $data['type'];
            unset($data['type']);
            ‪$currentLinkParts['url'] = $data;
        }
 
        $this->currentLinkParts = ‪$currentLinkParts;
 
        parent::initCurrentUrl();
    }
 
    protected function ‪initDocumentTemplate()
    {
        parent::initDocumentTemplate();
 
        if (!$this->‪areFieldChangeFunctionsValid() && !$this->‪areFieldChangeFunctionsValid(true)) {
            $this->parameters['fieldChangeFunc'] = [];
        }
        unset($this->parameters['fieldChangeFunc']['alert']);
        $update = [];
        foreach ($this->parameters['fieldChangeFunc'] as $v) {
            $update[] = 'FormEngineLinkBrowserAdapter.getParent().' . $v;
        }
        $inlineJS = implode(LF, $update);
 
        $pageRenderer = GeneralUtility::makeInstance(PageRenderer::class);
        $pageRenderer->loadRequireJsModule('TYPO3/CMS/Backend/FormEngineLinkBrowserAdapter', 'function(FormEngineLinkBrowserAdapter) {
            FormEngineLinkBrowserAdapter.updateFunctions = function() {' . $inlineJS . '};
        }');
    }
 
    public function ‪encodeTypoLink(ServerRequestInterface $request): ResponseInterface
    {
        $typoLinkParts = $request->getQueryParams();
        if (isset($typoLinkParts['params'])) {
            $typoLinkParts['additionalParams'] = $typoLinkParts['params'];
            unset($typoLinkParts['params']);
        }
 
        $typoLink = GeneralUtility::makeInstance(TypoLinkCodecService::class)->encode($typoLinkParts);
        return new ‪JsonResponse(['typoLink' => $typoLink]);
    }
 
    protected function ‪areFieldChangeFunctionsValid($handleFlexformSections = false)
    {
        $result = false;
        if (isset($this->parameters['fieldChangeFunc']) && is_array($this->parameters['fieldChangeFunc']) && isset($this->parameters['fieldChangeFuncHash'])) {
            $matches = [];
            $pattern = '#\\[el\\]\\[(([^]-]+-[^]-]+-)(idx\\d+-)([^]]+))\\]#i';
            $fieldChangeFunctions = $this->parameters['fieldChangeFunc'];
            // Special handling of flexform sections:
            // Field change functions are modified in JavaScript, thus the hash is always invalid
            if ($handleFlexformSections && preg_match($pattern, $this->parameters['itemName'], $matches)) {
                $originalName = $matches[1];
                $cleanedName = $matches[2] . $matches[4];
                foreach ($fieldChangeFunctions as &$value) {
                    $value = str_replace($originalName, $cleanedName, $value);
                }
                unset($value);
            }
            $result = hash_equals(GeneralUtility::hmac(serialize($fieldChangeFunctions), 'backend-link-browser'), $this->parameters['fieldChangeFuncHash']);
        }
        return $result;
    }
 
    protected function ‪getBodyTagAttributes()
    {
        $formEngineParameters = [];
        ‪$parameters = parent::getBodyTagAttributes();
 
        $formEngineParameters['fieldChangeFunc'] = $this->parameters['fieldChangeFunc'];
        $formEngineParameters['fieldChangeFuncHash'] = GeneralUtility::hmac(serialize($this->parameters['fieldChangeFunc']), 'backend-link-browser');
 
        ‪$parameters['data-add-on-params'] .= ‪HttpUtility::buildQueryString(['P' => $formEngineParameters], '&');
 
        return ‪$parameters;
    }
 
    protected function ‪getCurrentPageId()
    {
        $pageId = 0;
        $browserParameters = ‪$this->parameters;
        if (isset($browserParameters['pid'])) {
            $pageId = $browserParameters['pid'];
        } elseif (isset($browserParameters['itemName'])) {
            // parse data[<table>][<uid>]
            if (preg_match('~data\[([^]]*)\]\[([^]]*)\]~', $browserParameters['itemName'], $matches)) {
                $recordArray = ‪BackendUtility::getRecord($matches['1'], $matches['2']);
                if (is_array($recordArray)) {
                    $pageId = $recordArray['pid'];
                }
            }
        }
        return (int)‪BackendUtility::getTSCpidCached($browserParameters['table'], $browserParameters['uid'], $pageId)[0];
    }
 
    public function ‪getConfiguration(): array
    {
        $tsConfig = ‪BackendUtility::getPagesTSconfig($this->‪getCurrentPageId());
        return $tsConfig['TCEMAIN.']['linkHandler.']['page.']['configuration.'] ?? [];
    }
}