85 lines
2.6 KiB
PHP
85 lines
2.6 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, either version 2
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* of the License, or any later version.
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*
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*
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* The TYPO3 project - inspiring people to share!
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*/
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namespace TYPO3\CMS\Fluid\ViewHelpers\Sanitize;
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use TYPO3\CMS\Core\Html\SanitizerBuilderFactory;
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use TYPO3\CMS\Core\Html\SanitizerInitiator;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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use TYPO3\HtmlSanitizer\Builder\BuilderInterface;
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use TYPO3\HtmlSanitizer\Sanitizer;
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use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
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/**
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* ViewHelper to pass a given content through `typo3/html-sanitizer` to mitigate potential
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* cross-site scripting occurrences. The `build` option by default uses the class
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* `TYPO3\CMS\Core\Html\DefaultSanitizerBuilder`, which declares allowed HTML tags,
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* attributes and their values.
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*
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* ```
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* <f:sanitize.html>
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* <img src="/img.png" class="image" onmouseover="alert(document.location)">
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* </f:sanitize.html>
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* ```
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*
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* @see https://docs.typo3.org/permalink/t3viewhelper:typo3-fluid-sanitize-html
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* @see \TYPO3\CMS\Core\Html\DefaultSanitizerBuilder
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*/
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final class HtmlViewHelper extends AbstractViewHelper
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{
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/**
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* @var bool
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*/
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protected $escapeChildren = false;
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/**
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* @var bool
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*/
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protected $escapeOutput = false;
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public function __construct(
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private readonly SanitizerBuilderFactory $sanitizerBuilderFactory
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) {}
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public function initializeArguments(): void
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{
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$this->registerArgument('build', 'string', 'preset name or class-like name of sanitization builder', false, 'default');
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}
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public function render(): string
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{
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$value = $this->renderChildren();
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$build = $this->arguments['build'];
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return $this->createSanitizer($build)->sanitize((string)$value, self::createInitiator());
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}
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private static function createInitiator(): SanitizerInitiator
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{
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return GeneralUtility::makeInstance(SanitizerInitiator::class, self::class);
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}
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private function createSanitizer(string $build): Sanitizer
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{
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if (class_exists($build) && is_a($build, BuilderInterface::class, true)) {
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$builder = GeneralUtility::makeInstance($build);
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} else {
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$builder = $this->sanitizerBuilderFactory->build($build);
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}
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return $builder->build();
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}
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}
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