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<?php |
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/** |
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* This file is part of Blitz PHP framework. |
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* |
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* (c) 2022 Dimitri Sitchet Tomkeu <[email protected]> |
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* |
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* For the full copyright and license information, please view |
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* the LICENSE file that was distributed with this source code. |
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*/ |
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namespace BlitzPHP\Middlewares; |
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use BlitzPHP\Exceptions\FrameworkException; |
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use BlitzPHP\Traits\InstanceConfigTrait; |
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use ParagonIE\CSPBuilder\CSPBuilder; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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/** |
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* Content Security Policy Middleware |
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* |
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* ### Options |
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* |
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* - `script_nonce` Permet d'ajouter une politique de nonce à la directive script-src. |
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* - `style_nonce` Permet d'ajouter une politique de nonce à la directive style-src. |
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*/ |
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class Csp implements MiddlewareInterface |
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{ |
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use InstanceConfigTrait; |
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/** |
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* CSP Builder |
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*/ |
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protected CSPBuilder $csp; |
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/** |
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* Options de configuration. |
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* |
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* @var array<string, mixed> |
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*/ |
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protected array $_defaultConfig = [ |
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'script_nonce' => false, |
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'style_nonce' => false, |
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]; |
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/** |
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* Constructor |
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* |
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* @param array|CSPBuilder $csp Objet CSP ou tableau de configuration |
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* @param array<string, mixed> $config options de configurations. |
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*/ |
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public function __construct(array|CSPBuilder $csp, array $config = []) |
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{ |
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if (! class_exists(CSPBuilder::class)) { |
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throw new FrameworkException('Vous devez installer paragonie/csp-builder pour utiliser le middleware Csp.'); |
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} |
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$this->setConfig($config); |
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if (! $csp instanceof CSPBuilder) { |
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$csp = new CSPBuilder($csp); |
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} |
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$this->csp = $csp; |
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} |
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/** |
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* Ajoute les nonces (s'ils sont activés) à la requete et applique l'en-tête CSP à la réponse. |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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if ($this->getConfig('script_nonce')) { |
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$request = $request->withAttribute('cspScriptNonce', $this->csp->nonce('script-src')); |
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} |
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if ($this->getConfig('style_nonce')) { |
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$request = $request->withAttribute('cspStyleNonce', $this->csp->nonce('style-src')); |
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} |
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$response = $handler->handle($request); |
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/** @var ResponseInterface */ |
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return $this->csp->injectCSPHeader($response); |
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} |
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} |
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blitz-php /
framework
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