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| 1 | <?php |
| 2 | |
| 3 | namespace App\Http\Middleware; |
| 4 | |
| 5 | use Closure; |
| 6 | use Illuminate\Http\Request; |
| 7 | use Illuminate\Support\Facades\Route; |
| 8 | use Illuminate\Support\Facades\View; |
| 9 | use Symfony\Component\HttpFoundation\Response; |
| 10 | |
| 11 | class SecureHeaders |
| 12 | { |
| 13 | /** |
| 14 | * Enumerate headers which you do not want in your application's responses. |
| 15 | * Great starting point would be to go check out @Scott_Helme's: |
| 16 | * https://securityheaders.com/ |
| 17 | * |
| 18 | * @var array |
| 19 | */ |
| 20 | private $unwantedHeaderList = [ |
| 21 | 'X-Powered-By', |
| 22 | 'Server', |
| 23 | ]; |
| 24 | |
| 25 | /** |
| 26 | * Handle an incoming request. |
| 27 | * |
| 28 | * @param \Illuminate\Http\Request $request |
| 29 | * @param \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response) $next |
| 30 | * @return \Symfony\Component\HttpFoundation\Response |
| 31 | * @phpcs:disable Squiz.Commenting.FunctionComment.IncorrectTypeHint |
| 32 | */ |
| 33 | public function handle(Request $request, Closure $next): Response |
| 34 | { |
| 35 | // phpcs:enable |
| 36 | View::share('nonce', $nonce = \uniqid()); |
| 37 | // * For VueJS dev tool to execute |
| 38 | $jsDev = config('app.debug') ? "'unsafe-eval' 'unsafe-inline'" : "'nonce-{$nonce}' 'strict-dynamic'"; |
| 39 | $reportUri = Route::has('cspReportUri') ? |
| 40 | \sprintf(' report-uri %s ;', \parse_url(route('cspReportUri'), \PHP_URL_PATH)) : ''; |
| 41 | $this->removeUnwantedHeaders($this->unwantedHeaderList); |
| 42 | $response = $next($request); |
| 43 | $response->headers->set('Referrer-Policy', 'no-referrer-when-downgrade'); |
| 44 | $response->headers->set('X-Content-Type-Options', 'nosniff'); |
| 45 | $response->headers->set('X-XSS-Protection', '1; mode=block'); |
| 46 | $response->headers->set('X-Frame-Options', 'SAMEORIGIN'); |
| 47 | $response->headers->set('Strict-Transport-Security', 'max-age=31536000; includeSubDomains;'); |
| 48 | $cspPolicies = [ |
| 49 | "manifest-src 'self';", |
| 50 | "connect-src 'self' blob:;", |
| 51 | "img-src * data: blob:;", |
| 52 | "font-src 'self' data: https://fonts.gstatic.com;", |
| 53 | "style-src 'self' 'unsafe-inline';", |
| 54 | "script-src 'self' {$jsDev} " . \implode(' ', [ |
| 55 | 'https: blob:', |
| 56 | ]) . ';' |
| 57 | ]; |
| 58 | |
| 59 | $response->headers->set( |
| 60 | 'Content-Security-Policy', |
| 61 | implode(' ', $cspPolicies) . $reportUri |
| 62 | ); |
| 63 | $response->headers->set('Feature-Policy', 'fullscreen \'self\';'); |
| 64 | return $response; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Remove unwanted headers |
| 69 | * |
| 70 | * @param array $headerList |
| 71 | * @return void |
| 72 | */ |
| 73 | private function removeUnwantedHeaders(array $headerList) |
| 74 | { |
| 75 | foreach ($headerList as $header) { |
| 76 | header_remove($header); |
| 77 | } |
| 78 | } |
| 79 | } |