/
RequestTransformer.php
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/
RequestTransformer.php
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<?php
/**
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since 3.3.0
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Http;
use Cake\Core\Configure;
use Cake\Network\Request as CakeRequest;
use Cake\Utility\Hash;
use Psr\Http\Message\ServerRequestInterface as PsrRequest;
/**
* Translate and transform from PSR7 requests into CakePHP requests.
*
* This is an important step for maintaining backwards compatibility
* with existing CakePHP applications, which depend on the CakePHP request object.
*
* There is no reverse transform as the 'application' cannot return a mutated
* request object.
*
* @internal
*/
class RequestTransformer
{
/**
* Transform a PSR7 request into a CakePHP one.
*
* @param \Psr\Http\Message\ServerRequestInterface $request The PSR7 request.
* @return \Cake\Network\Request The transformed request.
*/
public static function toCake(PsrRequest $request)
{
$post = $request->getParsedBody();
$server = $request->getServerParams();
$files = static::getFiles($request);
if (!empty($files)) {
$post = Hash::merge($post, $files);
}
$input = $request->getBody()->getContents();
$input = $input === '' ? null : $input;
return new CakeRequest([
'query' => $request->getQueryParams(),
'post' => $post,
'cookies' => $request->getCookieParams(),
'environment' => $server,
'params' => static::getParams($request),
'url' => $request->getUri()->getPath(),
'base' => $request->getAttribute('base', ''),
'webroot' => $request->getAttribute('webroot', '/'),
'session' => $request->getAttribute('session', null),
'input' => $input,
]);
}
/**
* Extract the routing parameters out of the request object.
*
* @param \Psr\Http\Message\ServerRequestInterface $request The request to extract params from.
* @return array The routing parameters.
*/
protected static function getParams(PsrRequest $request)
{
$params = (array)$request->getAttribute('params', []);
$params += [
'plugin' => null,
'controller' => null,
'action' => null,
'_ext' => null,
'pass' => []
];
return $params;
}
/**
* Extract the uploaded files out of the request object.
*
* CakePHP expects to get arrays of file information and
* not the parsed objects that PSR7 requests contain. Downsample the data here.
*
* @param \Psr\Http\Message\ServerRequestInterface $request The request to extract files from.
* @return array The routing parameters.
*/
protected static function getFiles($request)
{
return static::convertFiles([], $request->getUploadedFiles());
}
/**
* Convert a nested array of files to arrays.
*
* @param array $data The data to add files to.
* @param array $files The file objects to convert.
* @param string $path The current array path.
* @return array Converted file data
*/
protected static function convertFiles($data, $files, $path = '')
{
foreach ($files as $key => $file) {
$newPath = $path;
if ($newPath === '') {
$newPath = $key;
}
if ($newPath !== $key) {
$newPath .= '.' . $key;
}
if (is_array($file)) {
$data = static::convertFiles($data, $file, $newPath);
} else {
$data = Hash::insert($data, $newPath, static::convertFile($file));
}
}
return $data;
}
/**
* Convert a single file back into an array.
*
* @param \Psr\Http\Message\UploadedFileInterface $file The file to convert.
* @return array
*/
protected static function convertFile($file)
{
$error = $file->getError();
$tmpName = '';
if ($error === UPLOAD_ERR_OK) {
$tmpName = $file->getStream()->getMetadata('uri');
}
return [
'name' => $file->getClientFilename(),
'type' => $file->getClientMediaType(),
'tmp_name' => $tmpName,
'error' => $error,
'size' => $file->getSize(),
];
}
}