500 lines
21 KiB
PHP
Executable File
500 lines
21 KiB
PHP
Executable File
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\HttpClient;
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use Psr\Log\LoggerAwareInterface;
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use Psr\Log\LoggerAwareTrait;
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use Symfony\Component\HttpClient\Exception\InvalidArgumentException;
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use Symfony\Component\HttpClient\Exception\TransportException;
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use Symfony\Component\HttpClient\Internal\CurlClientState;
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use Symfony\Component\HttpClient\Internal\PushedResponse;
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use Symfony\Component\HttpClient\Response\CurlResponse;
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use Symfony\Component\HttpClient\Response\ResponseStream;
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use Symfony\Contracts\HttpClient\HttpClientInterface;
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use Symfony\Contracts\HttpClient\ResponseInterface;
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use Symfony\Contracts\HttpClient\ResponseStreamInterface;
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use Symfony\Contracts\Service\ResetInterface;
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/**
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* A performant implementation of the HttpClientInterface contracts based on the curl extension.
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*
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* This provides fully concurrent HTTP requests, with transparent
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* HTTP/2 push when a curl version that supports it is installed.
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*
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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final class CurlHttpClient implements HttpClientInterface, LoggerAwareInterface, ResetInterface
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{
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use HttpClientTrait;
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use LoggerAwareTrait;
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private $defaultOptions = self::OPTIONS_DEFAULTS + [
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'auth_ntlm' => null, // array|string - an array containing the username as first value, and optionally the
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// password as the second one; or string like username:password - enabling NTLM auth
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];
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/**
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* An internal object to share state between the client and its responses.
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*
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* @var CurlClientState
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*/
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private $multi;
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private static $curlVersion;
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/**
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* @param array $defaultOptions Default request's options
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* @param int $maxHostConnections The maximum number of connections to a single host
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* @param int $maxPendingPushes The maximum number of pushed responses to accept in the queue
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*
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* @see HttpClientInterface::OPTIONS_DEFAULTS for available options
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*/
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public function __construct(array $defaultOptions = [], int $maxHostConnections = 6, int $maxPendingPushes = 50)
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{
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if (!\extension_loaded('curl')) {
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throw new \LogicException('You cannot use the "Symfony\Component\HttpClient\CurlHttpClient" as the "curl" extension is not installed.');
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}
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$this->defaultOptions['buffer'] = $this->defaultOptions['buffer'] ?? \Closure::fromCallable([__CLASS__, 'shouldBuffer']);
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if ($defaultOptions) {
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[, $this->defaultOptions] = self::prepareRequest(null, null, $defaultOptions, $this->defaultOptions);
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}
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$this->multi = new CurlClientState();
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self::$curlVersion = self::$curlVersion ?? curl_version();
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// Don't enable HTTP/1.1 pipelining: it forces responses to be sent in order
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if (\defined('CURLPIPE_MULTIPLEX')) {
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curl_multi_setopt($this->multi->handle, \CURLMOPT_PIPELINING, \CURLPIPE_MULTIPLEX);
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}
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if (\defined('CURLMOPT_MAX_HOST_CONNECTIONS')) {
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$maxHostConnections = curl_multi_setopt($this->multi->handle, \CURLMOPT_MAX_HOST_CONNECTIONS, 0 < $maxHostConnections ? $maxHostConnections : \PHP_INT_MAX) ? 0 : $maxHostConnections;
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}
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if (\defined('CURLMOPT_MAXCONNECTS') && 0 < $maxHostConnections) {
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curl_multi_setopt($this->multi->handle, \CURLMOPT_MAXCONNECTS, $maxHostConnections);
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}
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// Skip configuring HTTP/2 push when it's unsupported or buggy, see https://bugs.php.net/77535
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if (0 >= $maxPendingPushes || \PHP_VERSION_ID < 70217 || (\PHP_VERSION_ID >= 70300 && \PHP_VERSION_ID < 70304)) {
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return;
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}
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// HTTP/2 push crashes before curl 7.61
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if (!\defined('CURLMOPT_PUSHFUNCTION') || 0x073d00 > self::$curlVersion['version_number'] || !(\CURL_VERSION_HTTP2 & self::$curlVersion['features'])) {
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return;
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}
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curl_multi_setopt($this->multi->handle, \CURLMOPT_PUSHFUNCTION, function ($parent, $pushed, array $requestHeaders) use ($maxPendingPushes) {
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return $this->handlePush($parent, $pushed, $requestHeaders, $maxPendingPushes);
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});
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}
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/**
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* @see HttpClientInterface::OPTIONS_DEFAULTS for available options
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*
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* {@inheritdoc}
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*/
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public function request(string $method, string $url, array $options = []): ResponseInterface
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{
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[$url, $options] = self::prepareRequest($method, $url, $options, $this->defaultOptions);
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$scheme = $url['scheme'];
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$authority = $url['authority'];
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$host = parse_url($authority, \PHP_URL_HOST);
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$url = implode('', $url);
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if (!isset($options['normalized_headers']['user-agent'])) {
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$options['headers'][] = 'User-Agent: Symfony HttpClient/Curl';
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}
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$curlopts = [
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\CURLOPT_URL => $url,
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\CURLOPT_TCP_NODELAY => true,
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\CURLOPT_PROTOCOLS => \CURLPROTO_HTTP | \CURLPROTO_HTTPS,
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\CURLOPT_REDIR_PROTOCOLS => \CURLPROTO_HTTP | \CURLPROTO_HTTPS,
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\CURLOPT_FOLLOWLOCATION => true,
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\CURLOPT_MAXREDIRS => 0 < $options['max_redirects'] ? $options['max_redirects'] : 0,
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\CURLOPT_COOKIEFILE => '', // Keep track of cookies during redirects
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\CURLOPT_TIMEOUT => 0,
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\CURLOPT_PROXY => $options['proxy'],
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\CURLOPT_NOPROXY => $options['no_proxy'] ?? $_SERVER['no_proxy'] ?? $_SERVER['NO_PROXY'] ?? '',
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\CURLOPT_SSL_VERIFYPEER => $options['verify_peer'],
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\CURLOPT_SSL_VERIFYHOST => $options['verify_host'] ? 2 : 0,
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\CURLOPT_CAINFO => $options['cafile'],
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\CURLOPT_CAPATH => $options['capath'],
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\CURLOPT_SSL_CIPHER_LIST => $options['ciphers'],
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\CURLOPT_SSLCERT => $options['local_cert'],
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\CURLOPT_SSLKEY => $options['local_pk'],
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\CURLOPT_KEYPASSWD => $options['passphrase'],
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\CURLOPT_CERTINFO => $options['capture_peer_cert_chain'],
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];
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if (1.0 === (float) $options['http_version']) {
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$curlopts[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_0;
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} elseif (1.1 === (float) $options['http_version']) {
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$curlopts[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_1;
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} elseif (\defined('CURL_VERSION_HTTP2') && (\CURL_VERSION_HTTP2 & self::$curlVersion['features']) && ('https:' === $scheme || 2.0 === (float) $options['http_version'])) {
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$curlopts[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_2_0;
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}
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if (isset($options['auth_ntlm'])) {
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$curlopts[\CURLOPT_HTTPAUTH] = \CURLAUTH_NTLM;
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$curlopts[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_1;
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if (\is_array($options['auth_ntlm'])) {
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$count = \count($options['auth_ntlm']);
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if ($count <= 0 || $count > 2) {
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throw new InvalidArgumentException(sprintf('Option "auth_ntlm" must contain 1 or 2 elements, %d given.', $count));
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}
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$options['auth_ntlm'] = implode(':', $options['auth_ntlm']);
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}
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if (!\is_string($options['auth_ntlm'])) {
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throw new InvalidArgumentException(sprintf('Option "auth_ntlm" must be a string or an array, "%s" given.', \gettype($options['auth_ntlm'])));
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}
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$curlopts[\CURLOPT_USERPWD] = $options['auth_ntlm'];
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}
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if (!\ZEND_THREAD_SAFE) {
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$curlopts[\CURLOPT_DNS_USE_GLOBAL_CACHE] = false;
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}
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if (\defined('CURLOPT_HEADEROPT')) {
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$curlopts[\CURLOPT_HEADEROPT] = \CURLHEADER_SEPARATE;
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}
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// curl's resolve feature varies by host:port but ours varies by host only, let's handle this with our own DNS map
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if (isset($this->multi->dnsCache->hostnames[$host])) {
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$options['resolve'] += [$host => $this->multi->dnsCache->hostnames[$host]];
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}
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if ($options['resolve'] || $this->multi->dnsCache->evictions) {
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// First reset any old DNS cache entries then add the new ones
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$resolve = $this->multi->dnsCache->evictions;
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$this->multi->dnsCache->evictions = [];
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$port = parse_url($authority, \PHP_URL_PORT) ?: ('http:' === $scheme ? 80 : 443);
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if ($resolve && 0x072a00 > self::$curlVersion['version_number']) {
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// DNS cache removals require curl 7.42 or higher
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// On lower versions, we have to create a new multi handle
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curl_multi_close($this->multi->handle);
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$this->multi->handle = (new self())->multi->handle;
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}
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foreach ($options['resolve'] as $host => $ip) {
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$resolve[] = null === $ip ? "-$host:$port" : "$host:$port:$ip";
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$this->multi->dnsCache->hostnames[$host] = $ip;
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$this->multi->dnsCache->removals["-$host:$port"] = "-$host:$port";
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}
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$curlopts[\CURLOPT_RESOLVE] = $resolve;
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}
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if ('POST' === $method) {
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// Use CURLOPT_POST to have browser-like POST-to-GET redirects for 301, 302 and 303
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$curlopts[\CURLOPT_POST] = true;
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} elseif ('HEAD' === $method) {
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$curlopts[\CURLOPT_NOBODY] = true;
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} else {
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$curlopts[\CURLOPT_CUSTOMREQUEST] = $method;
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}
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if ('\\' !== \DIRECTORY_SEPARATOR && $options['timeout'] < 1) {
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$curlopts[\CURLOPT_NOSIGNAL] = true;
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}
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if (\extension_loaded('zlib') && !isset($options['normalized_headers']['accept-encoding'])) {
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$options['headers'][] = 'Accept-Encoding: gzip'; // Expose only one encoding, some servers mess up when more are provided
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}
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foreach ($options['headers'] as $header) {
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if (':' === $header[-2] && \strlen($header) - 2 === strpos($header, ': ')) {
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// curl requires a special syntax to send empty headers
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$curlopts[\CURLOPT_HTTPHEADER][] = substr_replace($header, ';', -2);
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} else {
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$curlopts[\CURLOPT_HTTPHEADER][] = $header;
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}
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}
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// Prevent curl from sending its default Accept and Expect headers
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foreach (['accept', 'expect'] as $header) {
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if (!isset($options['normalized_headers'][$header][0])) {
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$curlopts[\CURLOPT_HTTPHEADER][] = $header.':';
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}
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}
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if (!\is_string($body = $options['body'])) {
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if (\is_resource($body)) {
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$curlopts[\CURLOPT_INFILE] = $body;
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} else {
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$eof = false;
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$buffer = '';
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$curlopts[\CURLOPT_READFUNCTION] = static function ($ch, $fd, $length) use ($body, &$buffer, &$eof) {
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return self::readRequestBody($length, $body, $buffer, $eof);
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};
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}
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if (isset($options['normalized_headers']['content-length'][0])) {
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$curlopts[\CURLOPT_INFILESIZE] = substr($options['normalized_headers']['content-length'][0], \strlen('Content-Length: '));
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} elseif (!isset($options['normalized_headers']['transfer-encoding'])) {
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$curlopts[\CURLOPT_HTTPHEADER][] = 'Transfer-Encoding: chunked'; // Enable chunked request bodies
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}
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if ('POST' !== $method) {
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$curlopts[\CURLOPT_UPLOAD] = true;
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}
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} elseif ('' !== $body || 'POST' === $method) {
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$curlopts[\CURLOPT_POSTFIELDS] = $body;
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}
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if ($options['peer_fingerprint']) {
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if (!isset($options['peer_fingerprint']['pin-sha256'])) {
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throw new TransportException(__CLASS__.' supports only "pin-sha256" fingerprints.');
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}
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$curlopts[\CURLOPT_PINNEDPUBLICKEY] = 'sha256//'.implode(';sha256//', $options['peer_fingerprint']['pin-sha256']);
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}
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if ($options['bindto']) {
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if (file_exists($options['bindto'])) {
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$curlopts[\CURLOPT_UNIX_SOCKET_PATH] = $options['bindto'];
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} elseif (preg_match('/^(.*):(\d+)$/', $options['bindto'], $matches)) {
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$curlopts[\CURLOPT_INTERFACE] = $matches[1];
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$curlopts[\CURLOPT_LOCALPORT] = $matches[2];
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} else {
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$curlopts[\CURLOPT_INTERFACE] = $options['bindto'];
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}
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}
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if (0 < $options['max_duration']) {
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$curlopts[\CURLOPT_TIMEOUT_MS] = 1000 * $options['max_duration'];
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}
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if ($pushedResponse = $this->multi->pushedResponses[$url] ?? null) {
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unset($this->multi->pushedResponses[$url]);
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if (self::acceptPushForRequest($method, $options, $pushedResponse)) {
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$this->logger && $this->logger->debug(sprintf('Accepting pushed response: "%s %s"', $method, $url));
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// Reinitialize the pushed response with request's options
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$ch = $pushedResponse->handle;
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$pushedResponse = $pushedResponse->response;
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$pushedResponse->__construct($this->multi, $url, $options, $this->logger);
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} else {
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$this->logger && $this->logger->debug(sprintf('Rejecting pushed response: "%s"', $url));
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$pushedResponse = null;
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}
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}
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if (!$pushedResponse) {
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$ch = curl_init();
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$this->logger && $this->logger->info(sprintf('Request: "%s %s"', $method, $url));
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}
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foreach ($curlopts as $opt => $value) {
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if (null !== $value && !curl_setopt($ch, $opt, $value) && \CURLOPT_CERTINFO !== $opt) {
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$constants = array_filter(get_defined_constants(), static function ($v, $k) use ($opt) {
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return $v === $opt && 'C' === $k[0] && (0 === strpos($k, 'CURLOPT_') || 0 === strpos($k, 'CURLINFO_'));
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}, \ARRAY_FILTER_USE_BOTH);
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throw new TransportException(sprintf('Curl option "%s" is not supported.', key($constants) ?? $opt));
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}
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}
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return $pushedResponse ?? new CurlResponse($this->multi, $ch, $options, $this->logger, $method, self::createRedirectResolver($options, $host), self::$curlVersion['version_number']);
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}
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/**
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* {@inheritdoc}
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*/
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public function stream($responses, float $timeout = null): ResponseStreamInterface
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{
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if ($responses instanceof CurlResponse) {
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$responses = [$responses];
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} elseif (!is_iterable($responses)) {
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throw new \TypeError(sprintf('"%s()" expects parameter 1 to be an iterable of CurlResponse objects, "%s" given.', __METHOD__, \is_object($responses) ? \get_class($responses) : \gettype($responses)));
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}
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if (\is_resource($this->multi->handle) || $this->multi->handle instanceof \CurlMultiHandle) {
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$active = 0;
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while (\CURLM_CALL_MULTI_PERFORM === curl_multi_exec($this->multi->handle, $active));
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}
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return new ResponseStream(CurlResponse::stream($responses, $timeout));
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}
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public function reset()
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{
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if ($this->logger) {
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foreach ($this->multi->pushedResponses as $url => $response) {
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$this->logger->debug(sprintf('Unused pushed response: "%s"', $url));
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}
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}
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$this->multi->pushedResponses = [];
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$this->multi->dnsCache->evictions = $this->multi->dnsCache->evictions ?: $this->multi->dnsCache->removals;
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$this->multi->dnsCache->removals = $this->multi->dnsCache->hostnames = [];
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if (\is_resource($this->multi->handle) || $this->multi->handle instanceof \CurlMultiHandle) {
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if (\defined('CURLMOPT_PUSHFUNCTION')) {
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curl_multi_setopt($this->multi->handle, \CURLMOPT_PUSHFUNCTION, null);
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}
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$active = 0;
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while (\CURLM_CALL_MULTI_PERFORM === curl_multi_exec($this->multi->handle, $active));
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}
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foreach ($this->multi->openHandles as [$ch]) {
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if (\is_resource($ch) || $ch instanceof \CurlHandle) {
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curl_setopt($ch, \CURLOPT_VERBOSE, false);
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}
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}
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}
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public function __destruct()
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{
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$this->reset();
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}
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private function handlePush($parent, $pushed, array $requestHeaders, int $maxPendingPushes): int
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{
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$headers = [];
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$origin = curl_getinfo($parent, \CURLINFO_EFFECTIVE_URL);
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foreach ($requestHeaders as $h) {
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if (false !== $i = strpos($h, ':', 1)) {
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$headers[substr($h, 0, $i)][] = substr($h, 1 + $i);
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}
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}
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if (!isset($headers[':method']) || !isset($headers[':scheme']) || !isset($headers[':authority']) || !isset($headers[':path'])) {
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$this->logger && $this->logger->debug(sprintf('Rejecting pushed response from "%s": pushed headers are invalid', $origin));
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return \CURL_PUSH_DENY;
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}
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$url = $headers[':scheme'][0].'://'.$headers[':authority'][0];
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// curl before 7.65 doesn't validate the pushed ":authority" header,
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// but this is a MUST in the HTTP/2 RFC; let's restrict pushes to the original host,
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// ignoring domains mentioned as alt-name in the certificate for now (same as curl).
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if (0 !== strpos($origin, $url.'/')) {
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$this->logger && $this->logger->debug(sprintf('Rejecting pushed response from "%s": server is not authoritative for "%s"', $origin, $url));
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return \CURL_PUSH_DENY;
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}
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if ($maxPendingPushes <= \count($this->multi->pushedResponses)) {
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$fifoUrl = key($this->multi->pushedResponses);
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unset($this->multi->pushedResponses[$fifoUrl]);
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$this->logger && $this->logger->debug(sprintf('Evicting oldest pushed response: "%s"', $fifoUrl));
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}
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$url .= $headers[':path'][0];
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$this->logger && $this->logger->debug(sprintf('Queueing pushed response: "%s"', $url));
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$this->multi->pushedResponses[$url] = new PushedResponse(new CurlResponse($this->multi, $pushed), $headers, $this->multi->openHandles[(int) $parent][1] ?? [], $pushed);
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return \CURL_PUSH_OK;
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}
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/**
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* Accepts pushed responses only if their headers related to authentication match the request.
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*/
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private static function acceptPushForRequest(string $method, array $options, PushedResponse $pushedResponse): bool
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{
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if ('' !== $options['body'] || $method !== $pushedResponse->requestHeaders[':method'][0]) {
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return false;
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}
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foreach (['proxy', 'no_proxy', 'bindto', 'local_cert', 'local_pk'] as $k) {
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if ($options[$k] !== $pushedResponse->parentOptions[$k]) {
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return false;
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}
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}
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foreach (['authorization', 'cookie', 'range', 'proxy-authorization'] as $k) {
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|
$normalizedHeaders = $options['normalized_headers'][$k] ?? [];
|
|
foreach ($normalizedHeaders as $i => $v) {
|
|
$normalizedHeaders[$i] = substr($v, \strlen($k) + 2);
|
|
}
|
|
|
|
if (($pushedResponse->requestHeaders[$k] ?? []) !== $normalizedHeaders) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Wraps the request's body callback to allow it to return strings longer than curl requested.
|
|
*/
|
|
private static function readRequestBody(int $length, \Closure $body, string &$buffer, bool &$eof): string
|
|
{
|
|
if (!$eof && \strlen($buffer) < $length) {
|
|
if (!\is_string($data = $body($length))) {
|
|
throw new TransportException(sprintf('The return value of the "body" option callback must be a string, "%s" returned.', \gettype($data)));
|
|
}
|
|
|
|
$buffer .= $data;
|
|
$eof = '' === $data;
|
|
}
|
|
|
|
$data = substr($buffer, 0, $length);
|
|
$buffer = substr($buffer, $length);
|
|
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Resolves relative URLs on redirects and deals with authentication headers.
|
|
*
|
|
* Work around CVE-2018-1000007: Authorization and Cookie headers should not follow redirects - fixed in Curl 7.64
|
|
*/
|
|
private static function createRedirectResolver(array $options, string $host): \Closure
|
|
{
|
|
$redirectHeaders = [];
|
|
if (0 < $options['max_redirects']) {
|
|
$redirectHeaders['host'] = $host;
|
|
$redirectHeaders['with_auth'] = $redirectHeaders['no_auth'] = array_filter($options['headers'], static function ($h) {
|
|
return 0 !== stripos($h, 'Host:');
|
|
});
|
|
|
|
if (isset($options['normalized_headers']['authorization'][0]) || isset($options['normalized_headers']['cookie'][0])) {
|
|
$redirectHeaders['no_auth'] = array_filter($options['headers'], static function ($h) {
|
|
return 0 !== stripos($h, 'Authorization:') && 0 !== stripos($h, 'Cookie:');
|
|
});
|
|
}
|
|
}
|
|
|
|
return static function ($ch, string $location) use ($redirectHeaders) {
|
|
try {
|
|
$location = self::parseUrl($location);
|
|
} catch (InvalidArgumentException $e) {
|
|
return null;
|
|
}
|
|
|
|
if ($redirectHeaders && $host = parse_url('http:'.$location['authority'], \PHP_URL_HOST)) {
|
|
$requestHeaders = $redirectHeaders['host'] === $host ? $redirectHeaders['with_auth'] : $redirectHeaders['no_auth'];
|
|
curl_setopt($ch, \CURLOPT_HTTPHEADER, $requestHeaders);
|
|
}
|
|
|
|
$url = self::parseUrl(curl_getinfo($ch, \CURLINFO_EFFECTIVE_URL));
|
|
|
|
return implode('', self::resolveUrl($location, $url));
|
|
};
|
|
}
|
|
}
|