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|
<?php
/**
* High-performance PHP process supervisor and load balancer written in Go
*
* @author Wolfy-J
*/
declare(strict_types=1);
namespace Spiral\RoadRunner;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestFactoryInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\StreamFactoryInterface;
use Psr\Http\Message\UploadedFileFactoryInterface;
/**
* Manages PSR-7 request and response.
*/
class PSR7Client
{
/** @var HttpClient */
private $httpClient;
/** @var ServerRequestFactoryInterface */
private $requestFactory;
/** @var StreamFactoryInterface */
private $streamFactory;
/*** @var UploadedFileFactoryInterface */
private $uploadsFactory;
private $originalServer = [];
/** @var array Valid values for HTTP protocol version */
private static $allowedVersions = ['1.0', '1.1', '2',];
/**
* @param Worker $worker
* @param ServerRequestFactoryInterface|null $requestFactory
* @param StreamFactoryInterface|null $streamFactory
* @param UploadedFileFactoryInterface|null $uploadsFactory
*/
public function __construct(
Worker $worker,
ServerRequestFactoryInterface $requestFactory = null,
StreamFactoryInterface $streamFactory = null,
UploadedFileFactoryInterface $uploadsFactory = null
) {
$this->httpClient = new HttpClient($worker);
$this->requestFactory = $requestFactory ?? new Diactoros\ServerRequestFactory();
$this->streamFactory = $streamFactory ?? new Diactoros\StreamFactory();
$this->uploadsFactory = $uploadsFactory ?? new Diactoros\UploadedFileFactory();
$this->originalServer = $_SERVER;
}
/**
* @return Worker
*/
public function getWorker(): Worker
{
return $this->httpClient->getWorker();
}
/**
* @return ServerRequestInterface|null
*/
public function acceptRequest()
{
$rawRequest = $this->httpClient->acceptRequest();
if ($rawRequest === null) {
return null;
}
$_SERVER = $this->configureServer($rawRequest['ctx']);
$request = $this->requestFactory->createServerRequest(
$rawRequest['ctx']['method'],
$rawRequest['ctx']['uri'],
$_SERVER
);
parse_str($rawRequest['ctx']['rawQuery'], $query);
$request = $request
->withProtocolVersion(static::fetchProtocolVersion($rawRequest['ctx']['protocol']))
->withCookieParams($rawRequest['ctx']['cookies'])
->withQueryParams($query)
->withUploadedFiles($this->wrapUploads($rawRequest['ctx']['uploads']));
foreach ($rawRequest['ctx']['attributes'] as $name => $value) {
$request = $request->withAttribute($name, $value);
}
foreach ($rawRequest['ctx']['headers'] as $name => $value) {
$request = $request->withHeader($name, $value);
}
if ($rawRequest['ctx']['parsed']) {
$request = $request->withParsedBody(json_decode($rawRequest['body'], true));
} else {
if ($rawRequest['body'] !== null) {
$request = $request->withBody($this->streamFactory->createStream($rawRequest['body']));
}
}
return $request;
}
/**
* Send response to the application server.
*
* @param ResponseInterface $response
*/
public function respond(ResponseInterface $response): void
{
$this->httpClient->respond(
$response->getStatusCode(),
$response->getBody()->__toString(),
$response->getHeaders()
);
}
/**
* Returns altered copy of _SERVER variable. Sets ip-address,
* request-time and other values.
*
* @param array $ctx
* @return array
*/
protected function configureServer(array $ctx): array
{
$server = $this->originalServer;
$server['REQUEST_URI'] = $ctx['uri'];
$server['REQUEST_TIME'] = time();
$server['REQUEST_TIME_FLOAT'] = microtime(true);
$server['REMOTE_ADDR'] = $ctx['attributes']['ipAddress'] ?? $ctx['remoteAddr'] ?? '127.0.0.1';
$server['HTTP_USER_AGENT'] = '';
foreach ($ctx['headers'] as $key => $value) {
$key = strtoupper(str_replace('-', '_', $key));
if (\in_array($key, ['CONTENT_TYPE', 'CONTENT_LENGTH'])) {
$server[$key] = implode(', ', $value);
} else {
$server['HTTP_' . $key] = implode(', ', $value);
}
}
return $server;
}
/**
* Wraps all uploaded files with UploadedFile.
*
* @param array $files
*
* @return array
*/
private function wrapUploads($files): array
{
if (empty($files)) {
return [];
}
$result = [];
foreach ($files as $index => $f) {
if (!isset($f['name'])) {
$result[$index] = $this->wrapUploads($f);
continue;
}
if (UPLOAD_ERR_OK === $f['error']) {
$stream = $this->streamFactory->createStreamFromFile($f['tmpName']);
} else {
$stream = $this->streamFactory->createStream();
}
$result[$index] = $this->uploadsFactory->createUploadedFile(
$stream,
$f['size'],
$f['error'],
$f['name'],
$f['mime']
);
}
return $result;
}
/**
* Normalize HTTP protocol version to valid values
*
* @param string $version
* @return string
*/
private static function fetchProtocolVersion(string $version): string
{
$v = substr($version, 5);
if ($v === '2.0') {
return '2';
}
// Fallback for values outside of valid protocol versions
if (!in_array($v, static::$allowedVersions, true)) {
return '1.1';
}
return $v;
}
}
|
