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<?php declare(strict_types=1); |
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namespace App\Middleware; |
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/** |
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* Import classes |
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*/ |
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use App\ContainerAwareTrait; |
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use Arus\Http\Response\ResponseFactoryAwareTrait; |
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use Neomerx\Cors\Analyzer; |
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use Neomerx\Cors\Strategies\Settings; |
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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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* Cross Origin Resource Sharing Middleware |
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* |
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* @see https://github.com/neomerx/cors-psr7 |
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*/ |
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final class CorsMiddleware implements MiddlewareInterface |
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{ |
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use ContainerAwareTrait; |
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use ResponseFactoryAwareTrait; |
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/** |
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* {@inheritDoc} |
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* |
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* @param ServerRequestInterface $request |
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* @param RequestHandlerInterface $handler |
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* |
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* @return ResponseInterface |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler) : ResponseInterface |
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{ |
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$settings = $this->createSettings( |
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$this->container->get('cors.configuration') |
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); |
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$analyzer = Analyzer::instance($settings); |
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if ($this->container->get('cors.debug')) { |
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$analyzer->setLogger( |
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$this->container->get('logger') |
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); |
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} |
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$cors = $analyzer->analyze($request); |
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switch ($cors->getRequestType()) { |
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case $cors::ERR_NO_HOST_HEADER: |
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case $cors::ERR_ORIGIN_NOT_ALLOWED: |
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case $cors::ERR_METHOD_NOT_SUPPORTED: |
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case $cors::ERR_HEADERS_NOT_SUPPORTED: |
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return $this->createResponse(403); |
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case $cors::TYPE_PRE_FLIGHT_REQUEST: |
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return $this->injectHeaders( |
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$this->createResponse(200), |
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$cors->getResponseHeaders() |
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); |
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case $cors::TYPE_REQUEST_OUT_OF_CORS_SCOPE: |
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return $handler->handle($request); |
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default: |
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return $this->injectHeaders( |
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$handler->handle($request), |
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$cors->getResponseHeaders() |
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); |
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} |
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} |
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/** |
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* @param array $params |
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* |
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* @return Settings |
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*/ |
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private function createSettings(array $params) : Settings |
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{ |
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$settings = new Settings(); |
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// the object initialization... |
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$settings->setAllowedOrigins([]); |
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$settings->setAllowedMethods([]); |
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$settings->setAllowedHeaders([]); |
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$settings->setExposedHeaders([]); |
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$settings->setServerOrigin( |
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(string) $params['server_origin_scheme'], |
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(string) $params['server_origin_host'], |
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(int) $params['server_origin_port'] |
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); |
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$settings->setPreFlightCacheMaxAge( |
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(int) $params['pre_flight_cache_max_age'] |
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); |
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$params['force_add_methods'] ? |
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$settings->enableAddAllowedMethodsToPreFlightResponse() : |
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$settings->disableAddAllowedMethodsToPreFlightResponse(); |
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$params['force_add_headers'] ? |
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$settings->enableAddAllowedHeadersToPreFlightResponse() : |
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$settings->disableAddAllowedHeadersToPreFlightResponse(); |
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$params['use_credentials'] ? |
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$settings->setCredentialsSupported() : |
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$settings->setCredentialsNotSupported(); |
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$params['all_origins_allowed'] ? |
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$settings->enableAllOriginsAllowed() : |
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$settings->setAllowedOrigins( |
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(array) $params['allowed_origins'] |
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); |
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$params['all_methods_allowed'] ? |
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$settings->enableAllMethodsAllowed() : |
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$settings->setAllowedMethods( |
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(array) $params['allowed_methods'] |
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); |
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$params['all_headers_allowed'] ? |
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$settings->enableAllHeadersAllowed() : |
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$settings->setAllowedHeaders( |
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(array) $params['allowed_headers'] |
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); |
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$settings->setExposedHeaders( |
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(array) $params['exposed_headers'] |
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); |
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$params['check_host'] ? |
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$settings->enableCheckHost() : |
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$settings->disableCheckHost(); |
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return $settings; |
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} |
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/** |
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* @param ResponseInterface $response |
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* @param array $headers |
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* |
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* @return ResponseInterface |
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*/ |
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private function injectHeaders(ResponseInterface $response, array $headers) : ResponseInterface |
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{ |
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foreach ($headers as $name => $value) { |
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$response = $response->withHeader($name, $value); |
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} |
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return $response; |
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} |
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} |
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sunrise-php /
awesome-skeleton
