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<?php |
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namespace Http\Client\Common\Plugin; |
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use Http\Client\Common\Plugin; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\StreamInterface; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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/** |
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* Allow to set the correct content type header on the request automatically only if it is not set. |
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* |
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* @author Karim Pinchon <[email protected]> |
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*/ |
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final class ContentTypePlugin implements Plugin |
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{ |
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/** |
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* Allow to disable the content type detection when stream is too large (as it can consume a lot of resource). |
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* |
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* @var bool |
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* |
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* true skip the content type detection |
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* false detect the content type (default value) |
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*/ |
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protected $skipDetection; |
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/** |
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* Determine the size stream limit for which the detection as to be skipped (default to 16Mb). |
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* |
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* @var int |
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*/ |
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protected $sizeLimit; |
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/** |
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* @param array $config { |
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* |
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* @var bool $skip_detection True skip detection if stream size is bigger than $size_limit. |
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* @var int $size_limit size stream limit for which the detection as to be skipped. |
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* } |
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*/ |
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public function __construct(array $config = []) |
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{ |
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$resolver = new OptionsResolver(); |
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$resolver->setDefaults([ |
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'skip_detection' => false, |
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'size_limit' => 16000000, |
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]); |
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$resolver->setAllowedTypes('skip_detection', 'bool'); |
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$resolver->setAllowedTypes('size_limit', 'int'); |
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$options = $resolver->resolve($config); |
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$this->skipDetection = $options['skip_detection']; |
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$this->sizeLimit = $options['size_limit']; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function handleRequest(RequestInterface $request, callable $next, callable $first) |
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{ |
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if (!$request->hasHeader('Content-Type')) { |
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$stream = $request->getBody(); |
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$streamSize = $stream->getSize(); |
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if (!$stream->isSeekable()) { |
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return $next($request); |
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} |
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if (0 === $streamSize) { |
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return $next($request); |
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} |
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if ($this->skipDetection && (null === $streamSize || $streamSize >= $this->sizeLimit)) { |
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return $next($request); |
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} |
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if ($this->isJson($stream)) { |
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$request = $request->withHeader('Content-Type', 'application/json'); |
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return $next($request); |
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} |
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if ($this->isXml($stream)) { |
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$request = $request->withHeader('Content-Type', 'application/xml'); |
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return $next($request); |
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} |
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} |
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return $next($request); |
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} |
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/** |
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* @param $stream StreamInterface |
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* |
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* @return bool |
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*/ |
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private function isJson($stream) |
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{ |
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$stream->rewind(); |
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json_decode($stream->getContents()); |
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return json_last_error() == JSON_ERROR_NONE; |
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} |
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/** |
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* @param $stream StreamInterface |
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* |
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* @return \SimpleXMLElement|false |
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*/ |
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private function isXml($stream) |
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{ |
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$stream->rewind(); |
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$previousValue = libxml_use_internal_errors(true); |
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$isXml = simplexml_load_string($stream->getContents()); |
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libxml_use_internal_errors($previousValue); |
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return $isXml; |
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} |
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} |
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php-http /
client-common
