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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Request\Body; |
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use InvalidArgumentException; |
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use Psr\Container\ContainerInterface; |
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use Psr\Http\Message\ResponseFactoryInterface; |
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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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use RuntimeException; |
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use Yiisoft\Http\Header; |
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use Yiisoft\Request\Body\Parser\JsonParser; |
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use function array_key_exists; |
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use function get_class; |
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use function is_array; |
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use function is_object; |
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/** |
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* The package is a PSR-15 middleware that allows parsing PSR-7 server request body selecting the parser according |
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* to the server request mime type. |
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* |
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* @see https://www.php-fig.org/psr/psr-7/ |
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* @see https://www.php-fig.org/psr/psr-15/ |
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*/ |
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final class RequestBodyParser implements MiddlewareInterface |
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{ |
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private ContainerInterface $container; |
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private BadRequestHandlerInterface $badRequestHandler; |
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/** |
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* @var string[] |
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* @psalm-var array<string, string> |
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*/ |
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private array $parsers = [ |
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'application/json' => JsonParser::class, |
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]; |
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private bool $ignoreBadRequestBody = false; |
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public function __construct( |
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ResponseFactoryInterface $responseFactory, |
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ContainerInterface $container, |
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BadRequestHandlerInterface $badRequestHandler = null |
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) { |
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$this->container = $container; |
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$this->badRequestHandler = $badRequestHandler ?? new BadRequestHandler($responseFactory); |
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} |
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/** |
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* Registers a request parser for a mime type specified. |
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* |
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* @param string $mimeType Mime type to register parser for. |
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* @param string $parserClass Parser fully qualified name. |
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* |
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* @return self |
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*/ |
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public function withParser(string $mimeType, string $parserClass): self |
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{ |
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$this->validateMimeType($mimeType); |
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if ($parserClass === '') { |
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throw new InvalidArgumentException('The parser class cannot be an empty string.'); |
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} |
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if ($this->container->has($parserClass) === false) { |
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throw new InvalidArgumentException("The parser \"$parserClass\" cannot be found."); |
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} |
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$new = clone $this; |
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$new->parsers[$this->normalizeMimeType($mimeType)] = $parserClass; |
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return $new; |
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} |
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/** |
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* Returns new instance with parsers un-registered for mime types specified. |
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* |
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* @param string ...$mimeTypes Mime types to unregister parsers for. |
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* |
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* @return self |
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*/ |
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public function withoutParsers(string ...$mimeTypes): self |
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{ |
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$new = clone $this; |
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if (count($mimeTypes) === 0) { |
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$new->parsers = []; |
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return $new; |
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} |
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foreach ($mimeTypes as $mimeType) { |
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$this->validateMimeType($mimeType); |
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unset($new->parsers[$this->normalizeMimeType($mimeType)]); |
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} |
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return $new; |
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} |
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/** |
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* Makes the middleware to simple skip requests it cannot parse. |
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* |
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* @return self |
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*/ |
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public function ignoreBadRequestBody(): self |
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{ |
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$new = clone $this; |
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$new->ignoreBadRequestBody = true; |
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return $new; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$parser = $this->getParser($this->getContentType($request)); |
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if ($parser !== null) { |
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try { |
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/** @var mixed $parsed */ |
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$parsed = $parser->parse((string)$request->getBody()); |
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if ($parsed !== null && !is_object($parsed) && !is_array($parsed)) { |
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$parserClass = get_class($parser); |
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throw new RuntimeException( |
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"$parserClass::parse() return value must be an array, an object, or null." |
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); |
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} |
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$request = $request->withParsedBody($parsed); |
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} catch (ParserException $e) { |
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if (!$this->ignoreBadRequestBody) { |
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return $this->badRequestHandler->withParserException($e)->handle($request); |
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} |
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} |
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} |
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return $handler->handle($request); |
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} |
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/** |
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* @psalm-suppress MixedInferredReturnType, MixedReturnStatement |
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*/ |
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private function getParser(?string $contentType): ?ParserInterface |
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{ |
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if ($contentType !== null && array_key_exists($contentType, $this->parsers)) { |
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return $this->container->get($this->parsers[$contentType]); |
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} |
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return null; |
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} |
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private function getContentType(ServerRequestInterface $request): ?string |
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{ |
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$contentType = $request->getHeaderLine(Header::CONTENT_TYPE); |
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if (trim($contentType) !== '') { |
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if (str_contains($contentType, ';')) { |
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$contentTypeParts = explode(';', $contentType, 2); |
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return strtolower(trim($contentTypeParts[0])); |
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} |
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return strtolower(trim($contentType)); |
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} |
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return null; |
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} |
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/** |
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* @throws InvalidArgumentException |
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*/ |
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6 |
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private function validateMimeType(string $mimeType): void |
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{ |
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if (strpos($mimeType, '/') === false) { |
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throw new InvalidArgumentException('Invalid mime type.'); |
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} |
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} |
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3 |
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private function normalizeMimeType(string $mimeType): string |
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{ |
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return strtolower(trim($mimeType)); |
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} |
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} |
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yiisoft /
request-body-parser
