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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 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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* Cors |
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* Middleware cors pour gerer les requetes d'origine croisees |
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*/ |
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class Cors implements MiddlewareInterface |
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{ |
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protected $config = [ |
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'AllowOrigin' => true, |
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'AllowCredentials' => true, |
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'AllowMethods' => ['GET', 'POST', 'PUT', 'PATCH', 'DELETE'], |
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'AllowHeaders' => true, |
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'ExposeHeaders' => false, |
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'MaxAge' => 86400, // 1 day |
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]; |
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/** |
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* Constructor |
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*/ |
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public function __construct(array $config = []) |
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{ |
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$this->config = array_merge($this->config, $config); |
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} |
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/** |
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* Modifie le MaxAge |
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* |
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* @param float|int $maxAge |
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*/ |
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public function setMaxAge($maxAge): self |
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{ |
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$this->config['MaxAge'] = $maxAge; |
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return $this; |
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} |
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/** |
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* Modifie les entetes exposes |
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* |
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* @param bool|string|string[] $exposeHeaders |
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*/ |
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public function setExposeHeaders($exposeHeaders): self |
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{ |
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$this->config['ExposeHeaders'] = $exposeHeaders; |
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return $this; |
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} |
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/** |
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* Modifie les entetes autorises |
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* |
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* @param bool|string|string[] $headers |
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*/ |
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public function setHeaders($headers): self |
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{ |
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$this->config['AllowHeaders'] = $headers; |
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return $this; |
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} |
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/** |
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* Modifie les methodes autorisees |
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* |
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* @param string|string[] $methods |
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*/ |
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public function setMethods($methods): self |
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{ |
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$this->config['AlloMethods'] = $methods; |
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return $this; |
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} |
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/** |
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* Defini si on doit utiliser les informations d'identifications ou pas |
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*/ |
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public function setCredentials(bool $credentials): self |
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{ |
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$this->config['AllowCredentials'] = $credentials; |
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return $this; |
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} |
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/** |
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* Modifie les origines autorisees |
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* |
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* @param bool|string|string[] $origin |
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*/ |
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public function setOrigin($origin): self |
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{ |
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$this->config['AllowOrigin'] = $origin; |
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return $this; |
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} |
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/** |
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* Execution du middleware |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$response = $handler->handle($request); |
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if ($request->getHeaderLine('Origin')) { |
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$response = $response |
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->withHeader('Access-Control-Allow-Origin', $this->_allowOrigin($request)) |
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->withHeader('Access-Control-Allow-Credentials', $this->_allowCredentials()) |
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->withHeader('Access-Control-Max-Age', $this->_maxAge()) |
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->withHeader('Access-Control-Expose-Headers', $this->_exposeHeaders()); |
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if (strtoupper($request->getMethod()) === 'OPTIONS') { |
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$response = $response |
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->withHeader('Access-Control-Allow-Headers', $this->_allowHeaders($request)) |
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->withHeader('Access-Control-Allow-Methods', $this->_allowMethods()) |
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->withStatus(200); |
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} |
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} |
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return $response; |
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} |
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/** |
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* Recupere les origines autorisees |
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*/ |
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private function _allowOrigin(ServerRequestInterface $request) |
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{ |
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$allowOrigin = $this->config['AllowOrigin']; |
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$origin = $request->getHeaderLine('Origin'); |
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if ($allowOrigin === true || $allowOrigin === '*') { |
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return $origin; |
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} |
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if (is_array($allowOrigin)) { |
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$origin = (array) $origin; |
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foreach ($origin as $o) { |
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if (in_array($o, $allowOrigin, true)) { |
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return $origin; |
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} |
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} |
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return ''; |
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} |
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return (string) $allowOrigin; |
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} |
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/** |
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* Autorise t-on les identifications ? |
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*/ |
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private function _allowCredentials(): string |
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{ |
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return ($this->config['AllowCredentials']) ? 'true' : 'false'; |
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} |
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/** |
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* Recupere les methodes autorisees |
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*/ |
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private function _allowMethods(): string |
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{ |
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return implode(', ', (array) $this->config['AllowMethods']); |
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} |
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/** |
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* Recupere les entetes autorises |
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*/ |
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private function _allowHeaders(ServerRequestInterface $request): string |
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{ |
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$allowHeaders = $this->config['AllowHeaders']; |
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if ($allowHeaders === true) { |
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return $request->getHeaderLine('Access-Control-Request-Headers'); |
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} |
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return implode(', ', (array) $allowHeaders); |
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} |
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/** |
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* Recupere les entetes exposes par l'application |
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*/ |
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private function _exposeHeaders(): string |
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{ |
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$exposeHeaders = $this->config['ExposeHeaders']; |
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if (is_string($exposeHeaders) || is_array($exposeHeaders)) { |
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return implode(', ', (array) $exposeHeaders); |
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} |
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return ''; |
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} |
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/** |
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* Recupere la duree de mise en cache des donnees |
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*/ |
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private function _maxAge(): string |
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{ |
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$maxAge = (string) $this->config['MaxAge']; |
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return ($maxAge) ?: '0'; |
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} |
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} |
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blitz-php /
framework
