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<?php |
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/** |
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* This file is part of laravel.su package. |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types = 1); |
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namespace App\Http\Middleware; |
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use Illuminate\Http\Request; |
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use Illuminate\Http\Response; |
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/** |
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* Class CorsMiddleware |
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*/ |
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class CorsMiddleware |
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{ |
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private const ORIGIN_REQUEST = 1; |
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private const ORIGIN_ANY = 2; |
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private const ORIGIN_LARAVEL = 4; |
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private const ORIGIN_NONE = 8; |
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/** |
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* @var array |
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*/ |
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private $allowedMethods = [ |
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'GET', |
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'PUT', |
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'POST', |
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'HEAD', |
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'PATCH', |
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'DELETE', |
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'OPTIONS', |
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]; |
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/** |
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* @var array |
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*/ |
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private $allowedHeaders = [ |
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'X-Key', |
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'X-Api-Token', |
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'X-Access-Token', |
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'X-Requested-With', |
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'X-Requested-With', |
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'DNT', |
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'Host', |
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'Pragma', |
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'Origin', |
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'Accept', |
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'Referer', |
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'Connection', |
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'User-Agent', |
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'Keep-Alive', |
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'Content-Type', |
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'Cache-Control', |
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'Authorization', |
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'Accept-Charset', |
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'Content-Length', |
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'Accept-Encoding', |
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'Accept-Language', |
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'If-Modified-Since', |
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]; |
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/** |
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* @param Request $request |
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* @param \Closure $next |
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* @return Response |
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* @throws \InvalidArgumentException |
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*/ |
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public function handle(Request $request, \Closure $next) |
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{ |
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$response = $next($request); |
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if ($response instanceof Response) { |
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$response = $this->injectHeaders($request, $response); |
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} |
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return $response; |
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} |
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/** |
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* @param Request $request |
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* @param Response $response |
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* @return Response |
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* @throws \InvalidArgumentException |
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*/ |
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private function injectHeaders(Request $request, Response $response) |
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{ |
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$response->headers->add([ |
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// Disable all cache |
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'Cache-Control' => 'private, no-cache, no-store, must-revalidate', |
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// Echo domain |
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'Access-Control-Allow-Origin' => $this->getAccessControlAllowOrigin($request, self::ORIGIN_REQUEST), |
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// Send allowed headers |
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'Access-Control-Allow-Headers' => implode(',', $this->allowedHeaders), |
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// Send allowed methods |
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'Access-Control-Allow-Methods' => implode(',', $this->allowedMethods), |
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// Allow credentials |
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'Access-Control-Allow-Credentials' => 'true', |
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// No P3P policy (?) |
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'P3P' => 'policyref="/w3c/p3p.xml", ' . |
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'CP="NON DSP COR CUR ADM DEV PSA PSD OUR UNR BUS UNI COM NAV INT DEM STA"', |
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// Blocks api queries into iframes |
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'X-Frame-Options' => 'DENY', |
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// Disable autodetect Content-Type |
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'X-Content-Type-Options' => 'nosniff', |
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// Api responses into IE? o_0 Why not? :D |
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'X-Xss-Protection' => '0', |
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]); |
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return $response; |
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} |
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/* |
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* @param Request $request |
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* @param int $mode |
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* @return string |
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* @throws \InvalidArgumentException |
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*/ |
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private function getAccessControlAllowOrigin(Request $request, int $mode = self::ORIGIN_REQUEST): string |
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{ |
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switch ($mode) { |
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case self::ORIGIN_REQUEST: |
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$headers = $request->headers; |
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$referer = $headers->get('Referer', '*'); |
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return $this->parseUrl($headers->get('Origin', $referer)); |
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case self::ORIGIN_ANY: |
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return '*'; |
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case self::ORIGIN_NONE: |
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return ''; |
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case self::ORIGIN_LARAVEL: |
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return '*.laravel.su'; |
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} |
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throw new \InvalidArgumentException('Invalid CORS mode'); |
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} |
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/** |
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* @param string $url |
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* @return string |
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*/ |
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private function parseUrl(string $url): string |
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{ |
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if ($url === '*') { |
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return '*'; |
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} |
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$scheme = parse_url($url, PHP_URL_SCHEME) ?: 'http'; |
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$host = parse_url($url, PHP_URL_HOST); |
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$port = parse_url($url, PHP_URL_PORT) ?: 80; |
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return $scheme . '://' . $host . ($port !== 80 ? ':' . $port : ''); |
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} |
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} |
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LaravelRUS /
laravel.ru
