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<?php |
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declare(strict_types=1); |
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namespace Shlinkio\Shlink\Rest\Middleware; |
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use Fig\Http\Message\RequestMethodInterface; |
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use Psr\Http\Message\ResponseInterface as Response; |
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use Psr\Http\Message\ServerRequestInterface as Request; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use function array_shift; |
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use function explode; |
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use function parse_str; |
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use function Shlinkio\Shlink\Common\contains; |
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use function Shlinkio\Shlink\Common\json_decode; |
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use function trim; |
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class BodyParserMiddleware implements MiddlewareInterface, RequestMethodInterface |
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{ |
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/** |
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* Process an incoming server request and return a response, optionally delegating |
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* to the next middleware component to create the response. |
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* |
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* @param Request $request |
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* @param RequestHandlerInterface $handler |
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* |
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* @return Response |
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*/ |
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public function process(Request $request, RequestHandlerInterface $handler): Response |
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{ |
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$method = $request->getMethod(); |
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$currentParams = $request->getParsedBody(); |
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// In requests that do not allow body or if the body has already been parsed, continue to next middleware |
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if (! empty($currentParams) || contains($method, [ |
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self::METHOD_GET, |
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self::METHOD_HEAD, |
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self::METHOD_OPTIONS, |
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])) { |
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return $handler->handle($request); |
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} |
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// If the accepted content is JSON, try to parse the body from JSON |
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$contentType = $this->getRequestContentType($request); |
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if (contains($contentType, ['application/json', 'text/json', 'application/x-json'])) { |
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return $handler->handle($this->parseFromJson($request)); |
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} |
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return $handler->handle($this->parseFromUrlEncoded($request)); |
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} |
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/** |
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* @param Request $request |
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* @return string |
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*/ |
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private function getRequestContentType(Request $request): string |
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{ |
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$contentType = $request->getHeaderLine('Content-type'); |
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$contentTypes = explode(';', $contentType); |
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return trim(array_shift($contentTypes)); |
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} |
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/** |
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* @param Request $request |
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* @return Request |
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*/ |
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View Code Duplication |
private function parseFromJson(Request $request): Request |
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{ |
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$rawBody = (string) $request->getBody(); |
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if (empty($rawBody)) { |
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return $request; |
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} |
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$parsedJson = json_decode($rawBody); |
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return $request->withParsedBody($parsedJson); |
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} |
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/** |
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* @param Request $request |
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* @return Request |
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*/ |
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View Code Duplication |
private function parseFromUrlEncoded(Request $request): Request |
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{ |
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$rawBody = (string) $request->getBody(); |
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if (empty($rawBody)) { |
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return $request; |
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} |
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$parsedBody = []; |
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parse_str($rawBody, $parsedBody); |
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return $request->withParsedBody($parsedBody); |
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} |
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} |
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.