596 lines
22 KiB
PHP
596 lines
22 KiB
PHP
<?php
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namespace GuzzleHttp\Handler;
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use GuzzleHttp\Exception\ConnectException;
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use GuzzleHttp\Exception\RequestException;
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use GuzzleHttp\Promise as P;
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use GuzzleHttp\Promise\FulfilledPromise;
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use GuzzleHttp\Promise\PromiseInterface;
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use GuzzleHttp\Psr7\LazyOpenStream;
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use GuzzleHttp\TransferStats;
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use GuzzleHttp\Utils;
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use Psr\Http\Message\RequestInterface;
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/**
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* Creates curl resources from a request
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*
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* @final
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*/
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class CurlFactory implements CurlFactoryInterface
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{
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public const CURL_VERSION_STR = 'curl_version';
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/**
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* @deprecated
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*/
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public const LOW_CURL_VERSION_NUMBER = '7.21.2';
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/**
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* @var resource[]|\CurlHandle[]
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*/
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private $handles = [];
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/**
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* @var int Total number of idle handles to keep in cache
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*/
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private $maxHandles;
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/**
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* @param int $maxHandles Maximum number of idle handles.
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*/
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public function __construct(int $maxHandles)
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{
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$this->maxHandles = $maxHandles;
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}
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public function create(RequestInterface $request, array $options): EasyHandle
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{
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if (isset($options['curl']['body_as_string'])) {
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$options['_body_as_string'] = $options['curl']['body_as_string'];
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unset($options['curl']['body_as_string']);
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}
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$easy = new EasyHandle;
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$easy->request = $request;
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$easy->options = $options;
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$conf = $this->getDefaultConf($easy);
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$this->applyMethod($easy, $conf);
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$this->applyHandlerOptions($easy, $conf);
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$this->applyHeaders($easy, $conf);
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unset($conf['_headers']);
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// Add handler options from the request configuration options
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if (isset($options['curl'])) {
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$conf = \array_replace($conf, $options['curl']);
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}
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$conf[\CURLOPT_HEADERFUNCTION] = $this->createHeaderFn($easy);
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$easy->handle = $this->handles ? \array_pop($this->handles) : \curl_init();
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curl_setopt_array($easy->handle, $conf);
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return $easy;
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}
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public function release(EasyHandle $easy): void
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{
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$resource = $easy->handle;
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unset($easy->handle);
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if (\count($this->handles) >= $this->maxHandles) {
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\curl_close($resource);
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} else {
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// Remove all callback functions as they can hold onto references
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// and are not cleaned up by curl_reset. Using curl_setopt_array
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// does not work for some reason, so removing each one
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// individually.
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\curl_setopt($resource, \CURLOPT_HEADERFUNCTION, null);
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\curl_setopt($resource, \CURLOPT_READFUNCTION, null);
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\curl_setopt($resource, \CURLOPT_WRITEFUNCTION, null);
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\curl_setopt($resource, \CURLOPT_PROGRESSFUNCTION, null);
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\curl_reset($resource);
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$this->handles[] = $resource;
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}
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}
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/**
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* Completes a cURL transaction, either returning a response promise or a
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* rejected promise.
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*
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* @param callable(RequestInterface, array): PromiseInterface $handler
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* @param CurlFactoryInterface $factory Dictates how the handle is released
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*/
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public static function finish(callable $handler, EasyHandle $easy, CurlFactoryInterface $factory): PromiseInterface
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{
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if (isset($easy->options['on_stats'])) {
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self::invokeStats($easy);
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}
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if (!$easy->response || $easy->errno) {
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return self::finishError($handler, $easy, $factory);
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}
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// Return the response if it is present and there is no error.
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$factory->release($easy);
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// Rewind the body of the response if possible.
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$body = $easy->response->getBody();
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if ($body->isSeekable()) {
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$body->rewind();
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}
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return new FulfilledPromise($easy->response);
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}
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private static function invokeStats(EasyHandle $easy): void
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{
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$curlStats = \curl_getinfo($easy->handle);
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$curlStats['appconnect_time'] = \curl_getinfo($easy->handle, \CURLINFO_APPCONNECT_TIME);
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$stats = new TransferStats(
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$easy->request,
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$easy->response,
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$curlStats['total_time'],
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$easy->errno,
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$curlStats
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);
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($easy->options['on_stats'])($stats);
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}
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/**
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* @param callable(RequestInterface, array): PromiseInterface $handler
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*/
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private static function finishError(callable $handler, EasyHandle $easy, CurlFactoryInterface $factory): PromiseInterface
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{
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// Get error information and release the handle to the factory.
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$ctx = [
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'errno' => $easy->errno,
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'error' => \curl_error($easy->handle),
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'appconnect_time' => \curl_getinfo($easy->handle, \CURLINFO_APPCONNECT_TIME),
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] + \curl_getinfo($easy->handle);
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$ctx[self::CURL_VERSION_STR] = \curl_version()['version'];
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$factory->release($easy);
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// Retry when nothing is present or when curl failed to rewind.
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if (empty($easy->options['_err_message']) && (!$easy->errno || $easy->errno == 65)) {
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return self::retryFailedRewind($handler, $easy, $ctx);
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}
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return self::createRejection($easy, $ctx);
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}
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private static function createRejection(EasyHandle $easy, array $ctx): PromiseInterface
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{
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static $connectionErrors = [
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\CURLE_OPERATION_TIMEOUTED => true,
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\CURLE_COULDNT_RESOLVE_HOST => true,
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\CURLE_COULDNT_CONNECT => true,
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\CURLE_SSL_CONNECT_ERROR => true,
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\CURLE_GOT_NOTHING => true,
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];
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if ($easy->createResponseException) {
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return P\Create::rejectionFor(
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new RequestException(
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'An error was encountered while creating the response',
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$easy->request,
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$easy->response,
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$easy->createResponseException,
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$ctx
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)
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);
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}
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// If an exception was encountered during the onHeaders event, then
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// return a rejected promise that wraps that exception.
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if ($easy->onHeadersException) {
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return P\Create::rejectionFor(
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new RequestException(
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'An error was encountered during the on_headers event',
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$easy->request,
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$easy->response,
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$easy->onHeadersException,
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$ctx
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)
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);
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}
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$message = \sprintf(
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'cURL error %s: %s (%s)',
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$ctx['errno'],
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$ctx['error'],
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'see https://curl.haxx.se/libcurl/c/libcurl-errors.html'
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);
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$uriString = (string) $easy->request->getUri();
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if ($uriString !== '' && false === \strpos($ctx['error'], $uriString)) {
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$message .= \sprintf(' for %s', $uriString);
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}
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// Create a connection exception if it was a specific error code.
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$error = isset($connectionErrors[$easy->errno])
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? new ConnectException($message, $easy->request, null, $ctx)
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: new RequestException($message, $easy->request, $easy->response, null, $ctx);
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return P\Create::rejectionFor($error);
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}
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/**
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* @return array<int|string, mixed>
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*/
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private function getDefaultConf(EasyHandle $easy): array
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{
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$conf = [
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'_headers' => $easy->request->getHeaders(),
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\CURLOPT_CUSTOMREQUEST => $easy->request->getMethod(),
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\CURLOPT_URL => (string) $easy->request->getUri()->withFragment(''),
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\CURLOPT_RETURNTRANSFER => false,
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\CURLOPT_HEADER => false,
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\CURLOPT_CONNECTTIMEOUT => 150,
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];
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if (\defined('CURLOPT_PROTOCOLS')) {
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$conf[\CURLOPT_PROTOCOLS] = \CURLPROTO_HTTP | \CURLPROTO_HTTPS;
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}
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$version = $easy->request->getProtocolVersion();
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if ($version == 1.1) {
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$conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_1;
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} elseif ($version == 2.0) {
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$conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_2_0;
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} else {
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$conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_0;
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}
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return $conf;
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}
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private function applyMethod(EasyHandle $easy, array &$conf): void
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{
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$body = $easy->request->getBody();
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$size = $body->getSize();
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if ($size === null || $size > 0) {
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$this->applyBody($easy->request, $easy->options, $conf);
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return;
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}
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$method = $easy->request->getMethod();
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if ($method === 'PUT' || $method === 'POST') {
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// See https://tools.ietf.org/html/rfc7230#section-3.3.2
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if (!$easy->request->hasHeader('Content-Length')) {
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$conf[\CURLOPT_HTTPHEADER][] = 'Content-Length: 0';
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}
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} elseif ($method === 'HEAD') {
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$conf[\CURLOPT_NOBODY] = true;
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unset(
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$conf[\CURLOPT_WRITEFUNCTION],
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$conf[\CURLOPT_READFUNCTION],
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$conf[\CURLOPT_FILE],
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$conf[\CURLOPT_INFILE]
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);
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}
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}
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private function applyBody(RequestInterface $request, array $options, array &$conf): void
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{
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$size = $request->hasHeader('Content-Length')
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? (int) $request->getHeaderLine('Content-Length')
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: null;
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// Send the body as a string if the size is less than 1MB OR if the
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// [curl][body_as_string] request value is set.
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if (($size !== null && $size < 1000000) || !empty($options['_body_as_string'])) {
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$conf[\CURLOPT_POSTFIELDS] = (string) $request->getBody();
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// Don't duplicate the Content-Length header
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$this->removeHeader('Content-Length', $conf);
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$this->removeHeader('Transfer-Encoding', $conf);
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} else {
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$conf[\CURLOPT_UPLOAD] = true;
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if ($size !== null) {
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$conf[\CURLOPT_INFILESIZE] = $size;
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$this->removeHeader('Content-Length', $conf);
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}
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$body = $request->getBody();
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if ($body->isSeekable()) {
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$body->rewind();
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}
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$conf[\CURLOPT_READFUNCTION] = static function ($ch, $fd, $length) use ($body) {
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return $body->read($length);
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};
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}
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// If the Expect header is not present, prevent curl from adding it
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if (!$request->hasHeader('Expect')) {
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$conf[\CURLOPT_HTTPHEADER][] = 'Expect:';
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}
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// cURL sometimes adds a content-type by default. Prevent this.
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if (!$request->hasHeader('Content-Type')) {
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$conf[\CURLOPT_HTTPHEADER][] = 'Content-Type:';
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}
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}
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private function applyHeaders(EasyHandle $easy, array &$conf): void
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{
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foreach ($conf['_headers'] as $name => $values) {
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foreach ($values as $value) {
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$value = (string) $value;
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if ($value === '') {
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// cURL requires a special format for empty headers.
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// See https://github.com/guzzle/guzzle/issues/1882 for more details.
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$conf[\CURLOPT_HTTPHEADER][] = "$name;";
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} else {
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$conf[\CURLOPT_HTTPHEADER][] = "$name: $value";
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}
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}
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}
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// Remove the Accept header if one was not set
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if (!$easy->request->hasHeader('Accept')) {
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$conf[\CURLOPT_HTTPHEADER][] = 'Accept:';
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}
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}
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/**
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* Remove a header from the options array.
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*
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* @param string $name Case-insensitive header to remove
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* @param array $options Array of options to modify
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*/
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private function removeHeader(string $name, array &$options): void
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{
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foreach (\array_keys($options['_headers']) as $key) {
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if (!\strcasecmp($key, $name)) {
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unset($options['_headers'][$key]);
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return;
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}
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}
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}
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private function applyHandlerOptions(EasyHandle $easy, array &$conf): void
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{
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$options = $easy->options;
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if (isset($options['verify'])) {
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if ($options['verify'] === false) {
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unset($conf[\CURLOPT_CAINFO]);
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$conf[\CURLOPT_SSL_VERIFYHOST] = 0;
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$conf[\CURLOPT_SSL_VERIFYPEER] = false;
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} else {
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$conf[\CURLOPT_SSL_VERIFYHOST] = 2;
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$conf[\CURLOPT_SSL_VERIFYPEER] = true;
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if (\is_string($options['verify'])) {
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// Throw an error if the file/folder/link path is not valid or doesn't exist.
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if (!\file_exists($options['verify'])) {
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throw new \InvalidArgumentException("SSL CA bundle not found: {$options['verify']}");
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}
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// If it's a directory or a link to a directory use CURLOPT_CAPATH.
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// If not, it's probably a file, or a link to a file, so use CURLOPT_CAINFO.
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if (
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\is_dir($options['verify']) ||
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(
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\is_link($options['verify']) === true &&
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($verifyLink = \readlink($options['verify'])) !== false &&
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\is_dir($verifyLink)
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)
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) {
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$conf[\CURLOPT_CAPATH] = $options['verify'];
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} else {
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$conf[\CURLOPT_CAINFO] = $options['verify'];
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}
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}
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}
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}
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if (!isset($options['curl'][\CURLOPT_ENCODING]) && !empty($options['decode_content'])) {
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$accept = $easy->request->getHeaderLine('Accept-Encoding');
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if ($accept) {
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$conf[\CURLOPT_ENCODING] = $accept;
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} else {
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// The empty string enables all available decoders and implicitly
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// sets a matching 'Accept-Encoding' header.
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$conf[\CURLOPT_ENCODING] = '';
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// But as the user did not specify any acceptable encodings we need
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// to overwrite this implicit header with an empty one.
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$conf[\CURLOPT_HTTPHEADER][] = 'Accept-Encoding:';
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}
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}
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if (!isset($options['sink'])) {
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// Use a default temp stream if no sink was set.
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$options['sink'] = \GuzzleHttp\Psr7\Utils::tryFopen('php://temp', 'w+');
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}
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$sink = $options['sink'];
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if (!\is_string($sink)) {
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$sink = \GuzzleHttp\Psr7\Utils::streamFor($sink);
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} elseif (!\is_dir(\dirname($sink))) {
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// Ensure that the directory exists before failing in curl.
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throw new \RuntimeException(\sprintf('Directory %s does not exist for sink value of %s', \dirname($sink), $sink));
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} else {
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$sink = new LazyOpenStream($sink, 'w+');
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}
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$easy->sink = $sink;
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$conf[\CURLOPT_WRITEFUNCTION] = static function ($ch, $write) use ($sink): int {
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return $sink->write($write);
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};
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$timeoutRequiresNoSignal = false;
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if (isset($options['timeout'])) {
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$timeoutRequiresNoSignal |= $options['timeout'] < 1;
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$conf[\CURLOPT_TIMEOUT_MS] = $options['timeout'] * 1000;
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}
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// CURL default value is CURL_IPRESOLVE_WHATEVER
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if (isset($options['force_ip_resolve'])) {
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if ('v4' === $options['force_ip_resolve']) {
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$conf[\CURLOPT_IPRESOLVE] = \CURL_IPRESOLVE_V4;
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} elseif ('v6' === $options['force_ip_resolve']) {
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$conf[\CURLOPT_IPRESOLVE] = \CURL_IPRESOLVE_V6;
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}
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}
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if (isset($options['connect_timeout'])) {
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$timeoutRequiresNoSignal |= $options['connect_timeout'] < 1;
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$conf[\CURLOPT_CONNECTTIMEOUT_MS] = $options['connect_timeout'] * 1000;
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}
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if ($timeoutRequiresNoSignal && \strtoupper(\substr(\PHP_OS, 0, 3)) !== 'WIN') {
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$conf[\CURLOPT_NOSIGNAL] = true;
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}
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if (isset($options['proxy'])) {
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if (!\is_array($options['proxy'])) {
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$conf[\CURLOPT_PROXY] = $options['proxy'];
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} else {
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$scheme = $easy->request->getUri()->getScheme();
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if (isset($options['proxy'][$scheme])) {
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$host = $easy->request->getUri()->getHost();
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if (!isset($options['proxy']['no']) || !Utils::isHostInNoProxy($host, $options['proxy']['no'])) {
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$conf[\CURLOPT_PROXY] = $options['proxy'][$scheme];
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}
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}
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}
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}
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if (isset($options['cert'])) {
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$cert = $options['cert'];
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if (\is_array($cert)) {
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$conf[\CURLOPT_SSLCERTPASSWD] = $cert[1];
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$cert = $cert[0];
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}
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if (!\file_exists($cert)) {
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throw new \InvalidArgumentException("SSL certificate not found: {$cert}");
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}
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# OpenSSL (versions 0.9.3 and later) also support "P12" for PKCS#12-encoded files.
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# see https://curl.se/libcurl/c/CURLOPT_SSLCERTTYPE.html
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$ext = pathinfo($cert, \PATHINFO_EXTENSION);
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if (preg_match('#^(der|p12)$#i', $ext)) {
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$conf[\CURLOPT_SSLCERTTYPE] = strtoupper($ext);
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}
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$conf[\CURLOPT_SSLCERT] = $cert;
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}
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if (isset($options['ssl_key'])) {
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if (\is_array($options['ssl_key'])) {
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if (\count($options['ssl_key']) === 2) {
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[$sslKey, $conf[\CURLOPT_SSLKEYPASSWD]] = $options['ssl_key'];
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} else {
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[$sslKey] = $options['ssl_key'];
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}
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}
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$sslKey = $sslKey ?? $options['ssl_key'];
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if (!\file_exists($sslKey)) {
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throw new \InvalidArgumentException("SSL private key not found: {$sslKey}");
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}
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$conf[\CURLOPT_SSLKEY] = $sslKey;
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}
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if (isset($options['progress'])) {
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$progress = $options['progress'];
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if (!\is_callable($progress)) {
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throw new \InvalidArgumentException('progress client option must be callable');
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}
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$conf[\CURLOPT_NOPROGRESS] = false;
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$conf[\CURLOPT_PROGRESSFUNCTION] = static function ($resource, int $downloadSize, int $downloaded, int $uploadSize, int $uploaded) use ($progress) {
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$progress($downloadSize, $downloaded, $uploadSize, $uploaded);
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};
|
|
}
|
|
|
|
if (!empty($options['debug'])) {
|
|
$conf[\CURLOPT_STDERR] = Utils::debugResource($options['debug']);
|
|
$conf[\CURLOPT_VERBOSE] = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This function ensures that a response was set on a transaction. If one
|
|
* was not set, then the request is retried if possible. This error
|
|
* typically means you are sending a payload, curl encountered a
|
|
* "Connection died, retrying a fresh connect" error, tried to rewind the
|
|
* stream, and then encountered a "necessary data rewind wasn't possible"
|
|
* error, causing the request to be sent through curl_multi_info_read()
|
|
* without an error status.
|
|
*
|
|
* @param callable(RequestInterface, array): PromiseInterface $handler
|
|
*/
|
|
private static function retryFailedRewind(callable $handler, EasyHandle $easy, array $ctx): PromiseInterface
|
|
{
|
|
try {
|
|
// Only rewind if the body has been read from.
|
|
$body = $easy->request->getBody();
|
|
if ($body->tell() > 0) {
|
|
$body->rewind();
|
|
}
|
|
} catch (\RuntimeException $e) {
|
|
$ctx['error'] = 'The connection unexpectedly failed without '
|
|
. 'providing an error. The request would have been retried, '
|
|
. 'but attempting to rewind the request body failed. '
|
|
. 'Exception: ' . $e;
|
|
return self::createRejection($easy, $ctx);
|
|
}
|
|
|
|
// Retry no more than 3 times before giving up.
|
|
if (!isset($easy->options['_curl_retries'])) {
|
|
$easy->options['_curl_retries'] = 1;
|
|
} elseif ($easy->options['_curl_retries'] == 2) {
|
|
$ctx['error'] = 'The cURL request was retried 3 times '
|
|
. 'and did not succeed. The most likely reason for the failure '
|
|
. 'is that cURL was unable to rewind the body of the request '
|
|
. 'and subsequent retries resulted in the same error. Turn on '
|
|
. 'the debug option to see what went wrong. See '
|
|
. 'https://bugs.php.net/bug.php?id=47204 for more information.';
|
|
return self::createRejection($easy, $ctx);
|
|
} else {
|
|
$easy->options['_curl_retries']++;
|
|
}
|
|
|
|
return $handler($easy->request, $easy->options);
|
|
}
|
|
|
|
private function createHeaderFn(EasyHandle $easy): callable
|
|
{
|
|
if (isset($easy->options['on_headers'])) {
|
|
$onHeaders = $easy->options['on_headers'];
|
|
|
|
if (!\is_callable($onHeaders)) {
|
|
throw new \InvalidArgumentException('on_headers must be callable');
|
|
}
|
|
} else {
|
|
$onHeaders = null;
|
|
}
|
|
|
|
return static function ($ch, $h) use (
|
|
$onHeaders,
|
|
$easy,
|
|
&$startingResponse
|
|
) {
|
|
$value = \trim($h);
|
|
if ($value === '') {
|
|
$startingResponse = true;
|
|
try {
|
|
$easy->createResponse();
|
|
} catch (\Exception $e) {
|
|
$easy->createResponseException = $e;
|
|
return -1;
|
|
}
|
|
if ($onHeaders !== null) {
|
|
try {
|
|
$onHeaders($easy->response);
|
|
} catch (\Exception $e) {
|
|
// Associate the exception with the handle and trigger
|
|
// a curl header write error by returning 0.
|
|
$easy->onHeadersException = $e;
|
|
return -1;
|
|
}
|
|
}
|
|
} elseif ($startingResponse) {
|
|
$startingResponse = false;
|
|
$easy->headers = [$value];
|
|
} else {
|
|
$easy->headers[] = $value;
|
|
}
|
|
return \strlen($h);
|
|
};
|
|
}
|
|
}
|