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<?php |
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namespace Wandu\Router\Middleware; |
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use Closure; |
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use Neomerx\Cors\Contracts\AnalysisResultInterface; |
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use Neomerx\Cors\Contracts\AnalyzerInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Wandu\Router\Contracts\MiddlewareInterface; |
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use function Wandu\Http\Response\json; |
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class Cors implements MiddlewareInterface |
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{ |
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/** @var \Neomerx\Cors\Contracts\AnalyzerInterface */ |
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protected $analyzer; |
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public function __construct(AnalyzerInterface $analyzer) |
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{ |
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$this->analyzer = $analyzer; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __invoke(ServerRequestInterface $request, Closure $next) |
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{ |
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$cors = $this->analyzer->analyze($request); |
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switch ($cors->getRequestType()) { |
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case AnalysisResultInterface::ERR_NO_HOST_HEADER: |
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case AnalysisResultInterface::ERR_ORIGIN_NOT_ALLOWED: |
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case AnalysisResultInterface::ERR_METHOD_NOT_SUPPORTED: |
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case AnalysisResultInterface::ERR_HEADERS_NOT_SUPPORTED: |
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return $this->responseError($cors); |
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case AnalysisResultInterface::TYPE_PRE_FLIGHT_REQUEST: |
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return $this->responsePreFlight($cors); |
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case AnalysisResultInterface::TYPE_REQUEST_OUT_OF_CORS_SCOPE: |
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return $next($request); |
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} |
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return $this->applyHeaders($next($request), $cors->getResponseHeaders()); |
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} |
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/** |
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* @param \Neomerx\Cors\Contracts\AnalysisResultInterface $cors |
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* @return \Psr\Http\Message\ResponseInterface |
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*/ |
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protected function responseError(AnalysisResultInterface $cors): ResponseInterface |
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{ |
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return json([ |
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'success' => false, |
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'code' => $cors->getRequestType(), |
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], 403); |
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} |
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/** |
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* @param \Neomerx\Cors\Contracts\AnalysisResultInterface $cors |
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* @return \Psr\Http\Message\ResponseInterface |
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*/ |
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protected function responsePreFlight(AnalysisResultInterface $cors): ResponseInterface |
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{ |
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return $this->applyHeaders( |
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json([ |
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'success' => true, |
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]), |
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$cors->getResponseHeaders() |
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); |
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} |
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/** |
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* @param \Psr\Http\Message\ResponseInterface $response |
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* @param array $headers |
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* @return \Psr\Http\Message\ResponseInterface |
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*/ |
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protected function applyHeaders(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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Wandu /
Framework
