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编辑当前文件:/home/sditechnicalteam/public_html/vendor/asm89/stack-cors/src/CorsService.php
<?php /* * This file is part of asm89/stack-cors. * * (c) Alexander <iam.asm89@gmail.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Asm89\Stack; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; class CorsService { private $options; public function __construct(array $options = []) { $this->options = $this->normalizeOptions($options); } private function normalizeOptions(array $options = []): array { $options += [ 'allowedOrigins' => [], 'allowedOriginsPatterns' => [], 'supportsCredentials' => false, 'allowedHeaders' => [], 'exposedHeaders' => [], 'allowedMethods' => [], 'maxAge' => 0, ]; // normalize array('*') to true if (in_array('*', $options['allowedOrigins'])) { $options['allowedOrigins'] = true; } if (in_array('*', $options['allowedHeaders'])) { $options['allowedHeaders'] = true; } else { $options['allowedHeaders'] = array_map('strtolower', $options['allowedHeaders']); } if (in_array('*', $options['allowedMethods'])) { $options['allowedMethods'] = true; } else { $options['allowedMethods'] = array_map('strtoupper', $options['allowedMethods']); } return $options; } /** * @deprecated use isOriginAllowed */ public function isActualRequestAllowed(Request $request): bool { return $this->isOriginAllowed($request); } public function isCorsRequest(Request $request): bool { return $request->headers->has('Origin'); } public function isPreflightRequest(Request $request): bool { return $request->getMethod() === 'OPTIONS' && $request->headers->has('Access-Control-Request-Method'); } public function handlePreflightRequest(Request $request): Response { $response = new Response(); $response->setStatusCode(204); return $this->addPreflightRequestHeaders($response, $request); } public function addPreflightRequestHeaders(Response $response, Request $request): Response { $this->configureAllowedOrigin($response, $request); if ($response->headers->has('Access-Control-Allow-Origin')) { $this->configureAllowCredentials($response, $request); $this->configureAllowedMethods($response, $request); $this->configureAllowedHeaders($response, $request); $this->configureMaxAge($response, $request); } return $response; } public function isOriginAllowed(Request $request): bool { if ($this->options['allowedOrigins'] === true) { return true; } if (!$request->headers->has('Origin')) { return false; } $origin = $request->headers->get('Origin'); if (in_array($origin, $this->options['allowedOrigins'])) { return true; } foreach ($this->options['allowedOriginsPatterns'] as $pattern) { if (preg_match($pattern, $origin)) { return true; } } return false; } public function addActualRequestHeaders(Response $response, Request $request): Response { $this->configureAllowedOrigin($response, $request); if ($response->headers->has('Access-Control-Allow-Origin')) { $this->configureAllowCredentials($response, $request); $this->configureExposedHeaders($response, $request); } return $response; } private function configureAllowedOrigin(Response $response, Request $request) { if ($this->options['allowedOrigins'] === true && !$this->options['supportsCredentials']) { // Safe+cacheable, allow everything $response->headers->set('Access-Control-Allow-Origin', '*'); } elseif ($this->isSingleOriginAllowed()) { // Single origins can be safely set $response->headers->set('Access-Control-Allow-Origin', array_values($this->options['allowedOrigins'])[0]); } else { // For dynamic headers, set the requested Origin header when set and allowed if ($this->isCorsRequest($request) && $this->isOriginAllowed($request)) { $response->headers->set('Access-Control-Allow-Origin', $request->headers->get('Origin')); } $this->varyHeader($response, 'Origin'); } } private function isSingleOriginAllowed(): bool { if ($this->options['allowedOrigins'] === true || !empty($this->options['allowedOriginsPatterns'])) { return false; } return count($this->options['allowedOrigins']) === 1; } private function configureAllowedMethods(Response $response, Request $request) { if ($this->options['allowedMethods'] === true) { $allowMethods = strtoupper($request->headers->get('Access-Control-Request-Method')); $this->varyHeader($response, 'Access-Control-Request-Method'); } else { $allowMethods = implode(', ', $this->options['allowedMethods']); } $response->headers->set('Access-Control-Allow-Methods', $allowMethods); } private function configureAllowedHeaders(Response $response, Request $request) { if ($this->options['allowedHeaders'] === true) { $allowHeaders = $request->headers->get('Access-Control-Request-Headers'); $this->varyHeader($response, 'Access-Control-Request-Headers'); } else { $allowHeaders = implode(', ', $this->options['allowedHeaders']); } $response->headers->set('Access-Control-Allow-Headers', $allowHeaders); } private function configureAllowCredentials(Response $response, Request $request) { if ($this->options['supportsCredentials']) { $response->headers->set('Access-Control-Allow-Credentials', 'true'); } } private function configureExposedHeaders(Response $response, Request $request) { if ($this->options['exposedHeaders']) { $response->headers->set('Access-Control-Expose-Headers', implode(', ', $this->options['exposedHeaders'])); } } private function configureMaxAge(Response $response, Request $request) { if ($this->options['maxAge'] !== null) { $response->headers->set('Access-Control-Max-Age', (int) $this->options['maxAge']); } } public function varyHeader(Response $response, $header): Response { if (!$response->headers->has('Vary')) { $response->headers->set('Vary', $header); } elseif (!in_array($header, explode(', ', $response->headers->get('Vary')))) { $response->headers->set('Vary', $response->headers->get('Vary') . ', ' . $header); } return $response; } private function isSameHost(Request $request): bool { return $request->headers->get('Origin') === $request->getSchemeAndHttpHost(); } }