TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:20 +02:00
commit c7a46689ff
115 changed files with 11736 additions and 0 deletions
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+<?php
+
+declare(strict_types=1);
+
+/*
+ * 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\Fluid\ViewHelpers\Sanitize;
+
+use TYPO3\CMS\Core\Html\SanitizerBuilderFactory;
+use TYPO3\CMS\Core\Html\SanitizerInitiator;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\HtmlSanitizer\Builder\BuilderInterface;
+use TYPO3\HtmlSanitizer\Sanitizer;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+
+/**
+ * ViewHelper to pass a given content through `typo3/html-sanitizer` to mitigate potential
+ * cross-site scripting occurrences. The `build` option by default uses the class
+ * `TYPO3\CMS\Core\Html\DefaultSanitizerBuilder`, which declares allowed HTML tags,
+ * attributes and their values.
+ *
+ * ```
+ *   <f:sanitize.html>
+ *       <img src="/img.png" class="image" onmouseover="alert(document.location)">
+ *   </f:sanitize.html>
+ * ```
+ *
+ * @see https://docs.typo3.org/permalink/t3viewhelper:typo3-fluid-sanitize-html
+ * @see \TYPO3\CMS\Core\Html\DefaultSanitizerBuilder
+ */
+final class HtmlViewHelper extends AbstractViewHelper
+{
+    /**
+     * @var bool
+     */
+    protected $escapeChildren = false;
+
+    /**
+     * @var bool
+     */
+    protected $escapeOutput = false;
+
+    public function __construct(
+        private readonly SanitizerBuilderFactory $sanitizerBuilderFactory
+    ) {}
+
+    public function initializeArguments(): void
+    {
+        $this->registerArgument('build', 'string', 'preset name or class-like name of sanitization builder', false, 'default');
+    }
+
+    public function render(): string
+    {
+        $value = $this->renderChildren();
+        $build = $this->arguments['build'];
+        return $this->createSanitizer($build)->sanitize((string)$value, self::createInitiator());
+    }
+
+    private static function createInitiator(): SanitizerInitiator
+    {
+        return GeneralUtility::makeInstance(SanitizerInitiator::class, self::class);
+    }
+
+    private function createSanitizer(string $build): Sanitizer
+    {
+        if (class_exists($build) && is_a($build, BuilderInterface::class, true)) {
+            $builder = GeneralUtility::makeInstance($build);
+        } else {
+            $builder = $this->sanitizerBuilderFactory->build($build);
+        }
+        return $builder->build();
+    }
+}