TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:20 +02:00
commit c7a46689ff
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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\Security;
+
+use TYPO3\CMS\Core\Core\RequestId;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Directive;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\SourceKeyword;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+
+/**
+ * ViewHelper to retrieve (and consume) a `nonce` attribute from
+ * the global server request object pool, or from the `PolicyProvider`
+ * service as a fall-back value.
+ *
+ * ```
+ *   <script nonce="{f:security.nonce(directive: 'script-src')}">const inline = 'script';</script>
+ *   <script nonce="{f:security.nonce(directive: 'script-src', scope: 'static')}" src="app.js"></script>
+ * ```
+ *
+ * @see https://docs.typo3.org/permalink/t3viewhelper:typo3-fluid-security-nonce
+ * @see https://docs.typo3.org/permalink/t3coreapi:content-security-policy
+ * @see \TYPO3\CMS\Core\Security\ContentSecurityPolicy\PolicyProvider
+ */
+final class NonceViewHelper extends AbstractViewHelper
+{
+    public function __construct(
+        private readonly RequestId $requestId,
+    ) {}
+
+    public function initializeArguments(): void
+    {
+        parent::initializeArguments();
+        $this->registerArgument('directive', 'string', 'Value of the CSP directive');
+        $this->registerArgument('scope', 'string', '`inline` or `static`', false, 'inline');
+    }
+
+    public function render(): string
+    {
+        $applicableDirectives = SourceKeyword::nonceProxy->getApplicableDirectives();
+        $directive = Directive::tryFrom($this->arguments['directive'] ?? '');
+        $directive = $directive !== null && in_array($directive, $applicableDirectives, true)
+            ? $directive->value
+            : self::class;
+        $scope = $this->arguments['scope'] ?? '';
+        if ($scope === 'static') {
+            return $this->requestId->nonce->consumeStatic($directive);
+        }
+        // `inline` is guessed here, it might be `static` as well in templates
+        return $this->requestId->nonce->consumeInline($directive);
+    }
+}