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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the OpenapiBundle package. |
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* |
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* (c) Niels Nijens <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Nijens\OpenapiBundle\Validation\RequestValidator; |
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use JsonSchema\Validator; |
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use Nijens\OpenapiBundle\ExceptionHandling\Exception\InvalidRequestBodyProblemException; |
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use Nijens\OpenapiBundle\ExceptionHandling\Exception\InvalidRequestProblemExceptionInterface; |
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use Nijens\OpenapiBundle\ExceptionHandling\Exception\ProblemException; |
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use Nijens\OpenapiBundle\ExceptionHandling\Exception\RequestProblemExceptionInterface; |
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use Nijens\OpenapiBundle\ExceptionHandling\Exception\Violation; |
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use Nijens\OpenapiBundle\Json\Reference; |
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use Nijens\OpenapiBundle\Routing\RouteContext; |
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use Nijens\OpenapiBundle\Validation\ValidationContext; |
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use Seld\JsonLint\JsonParser; |
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use stdClass; |
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use Symfony\Component\HttpFoundation\HeaderUtils; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\Response; |
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/** |
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* Validates a JSON request body with the JSON schema. |
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* |
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* @author Niels Nijens <[email protected]> |
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*/ |
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final class RequestBodyValidator implements ValidatorInterface |
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{ |
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/** |
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* @var JsonParser |
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*/ |
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private $jsonParser; |
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/** |
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* @var Validator |
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*/ |
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private $jsonValidator; |
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public function __construct(JsonParser $jsonParser, Validator $jsonValidator) |
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{ |
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$this->jsonParser = $jsonParser; |
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$this->jsonValidator = $jsonValidator; |
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} |
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public function validate(Request $request): ?RequestProblemExceptionInterface |
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{ |
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$requestContentType = $this->getRequestContentType($request); |
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if ($requestContentType !== 'application/json') { |
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return null; |
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} |
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$requestBodySchema = $this->getRequestBodySchemaFromRequest($request); |
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if ($requestBodySchema === null) { |
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return null; |
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} |
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$requestBody = $request->getContent(); |
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$decodedJsonRequestBody = null; |
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$violations = $this->validateJsonSyntax($requestBody, $decodedJsonRequestBody); |
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if (count($violations) > 0) { |
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return $this->createInvalidRequestBodyProblemException( |
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$violations, |
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'The request body must be valid JSON.' |
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); |
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} |
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$violations = array_merge( |
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$violations, |
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$this->validateJsonAgainstSchema( |
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unserialize($requestBodySchema), |
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$decodedJsonRequestBody |
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) |
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); |
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if (count($violations) > 0) { |
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return $this->createInvalidRequestBodyProblemException( |
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$violations, |
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'Validation of JSON request body failed.' |
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); |
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} |
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$request->attributes->set( |
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ValidationContext::REQUEST_ATTRIBUTE, |
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[ |
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ValidationContext::VALIDATED => true, |
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ValidationContext::REQUEST_BODY => json_encode($decodedJsonRequestBody), |
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] |
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); |
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return null; |
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} |
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private function getRequestContentType(Request $request): string |
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{ |
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return current(HeaderUtils::split($request->headers->get('Content-Type', ''), ';')) ?: ''; |
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} |
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private function getRequestBodySchemaFromRequest(Request $request): ?string |
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{ |
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return $request->attributes |
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->get(RouteContext::REQUEST_ATTRIBUTE)[RouteContext::REQUEST_BODY_SCHEMA] ?? null; |
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} |
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/** |
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* @param array|stdClass|string|int|float|bool|null $decodedJsonRequestBody |
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* |
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* @return Violation[] |
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*/ |
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private function validateJsonSyntax(string $requestBody, &$decodedJsonRequestBody): array |
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{ |
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$decodedJsonRequestBody = json_decode($requestBody); |
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if ($decodedJsonRequestBody !== null || $requestBody === 'null') { |
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return []; |
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} |
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$exception = $this->jsonParser->lint($requestBody); |
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return [ |
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new Violation('valid_json', $exception->getMessage()), |
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]; |
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} |
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/** |
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* @param stdClass|Reference $jsonSchema |
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* @param array|stdClass|string|int|float|bool|null $decodedJsonRequestBody |
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* |
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* @return Violation[] |
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*/ |
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private function validateJsonAgainstSchema($jsonSchema, &$decodedJsonRequestBody): array |
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{ |
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$this->jsonValidator->validate($decodedJsonRequestBody, $jsonSchema); |
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if ($this->jsonValidator->isValid()) { |
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return []; |
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} |
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$validationErrors = $this->jsonValidator->getErrors(); |
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$this->jsonValidator->reset(); |
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return array_map( |
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function (array $validationError): Violation { |
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return Violation::fromArray($validationError); |
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}, |
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$validationErrors |
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); |
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} |
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/** |
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* @param Violation[] $violations |
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*/ |
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private function createInvalidRequestBodyProblemException( |
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array $violations, |
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string $message |
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): InvalidRequestProblemExceptionInterface { |
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$exception = new InvalidRequestBodyProblemException( |
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ProblemException::DEFAULT_TYPE_URI, |
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'The request body contains errors.', |
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Response::HTTP_BAD_REQUEST, |
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$message |
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); |
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return $exception->withViolations($violations); |
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} |
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} |
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nijens /
openapi-bundle
