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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** @license For full copyright and license information, please see the LICENSE.md file. */ |
| 6 | |
| 7 | namespace App\Core\Security\Csrf; |
| 8 | |
| 9 | defined('AMMONLY_APP') || exit('Direct script access is forbidden.'); |
| 10 | |
| 11 | use Twig\Extension\AbstractExtension; |
| 12 | use Twig\TwigFunction; |
| 13 | |
| 14 | /** |
| 15 | * Twig Extension for Universal CSRF Helpers. |
| 16 | * |
| 17 | * Provides dynamic Twig functions for CSRF tokens, hidden form inputs, and meta tags. |
| 18 | * |
| 19 | * @package App\Core\Security\Csrf |
| 20 | */ |
| 21 | final class TwigCsrfExtension extends AbstractExtension |
| 22 | { |
| 23 | /** |
| 24 | * TwigCsrfExtension constructor. |
| 25 | * |
| 26 | * @param CsrfTokenManagerInterface $csrfTokenManager CSRF token manager instance. |
| 27 | */ |
| 28 | public function __construct( |
| 29 | private readonly CsrfTokenManagerInterface $csrfTokenManager |
| 30 | ) { |
| 31 | } |
| 32 | |
| 33 | /** |
| 34 | * {@inheritdoc} |
| 35 | */ |
| 36 | public function getFunctions(): array |
| 37 | { |
| 38 | return [ |
| 39 | new TwigFunction('csrf_token', [$this, 'getCsrfToken']), |
| 40 | new TwigFunction('csrf_field', [$this, 'renderCsrfField'], ['is_safe' => ['html']]), |
| 41 | new TwigFunction('csrf_meta', [$this, 'renderCsrfMeta'], ['is_safe' => ['html']]), |
| 42 | ]; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Returns active CSRF token string. |
| 47 | * |
| 48 | * @return string Active CSRF token. |
| 49 | */ |
| 50 | public function getCsrfToken(): string |
| 51 | { |
| 52 | return $this->csrfTokenManager->getToken(); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Renders hidden HTML input element with active CSRF token. |
| 57 | * |
| 58 | * @return string HTML hidden input tag. |
| 59 | */ |
| 60 | public function renderCsrfField(): string |
| 61 | { |
| 62 | $token = htmlspecialchars($this->getCsrfToken(), ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8'); |
| 63 | return sprintf('<input type="hidden" name="_csrf" value="%s">', $token); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Renders HTML meta tag with active CSRF token for JavaScript and HTMX. |
| 68 | * |
| 69 | * @return string HTML meta tag. |
| 70 | */ |
| 71 | public function renderCsrfMeta(): string |
| 72 | { |
| 73 | $token = htmlspecialchars($this->getCsrfToken(), ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8'); |
| 74 | return sprintf('<meta name="csrf-token" content="%s">', $token); |
| 75 | } |
| 76 | } |