576 lines
23 KiB
PHP
576 lines
23 KiB
PHP
<?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\LoggerInterface;
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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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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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'extra' => [
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'curl' => [], // A list of extra curl options indexed by their corresponding CURLOPT_*
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],
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];
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private static $emptyDefaults = self::OPTIONS_DEFAULTS + ['auth_ntlm' => null];
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/**
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* @var LoggerInterface|null
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*/
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private $logger;
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private $maxHostConnections;
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private $maxPendingPushes;
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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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/**
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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 $maxPendingPushes = 0)
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{
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if (!\extension_loaded('curl')) {
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throw new \LogicException('You cannot use the "Symfony\Component\HttpClient\CurlHttpClient" as the "curl" extension is not installed.');
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}
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$this->maxHostConnections = $maxHostConnections;
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$this->maxPendingPushes = $maxPendingPushes;
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$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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}
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public function setLogger(LoggerInterface $logger): void
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{
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$this->logger = $logger;
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if (isset($this->multi)) {
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$this->multi->logger = $logger;
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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 $options = []): ResponseInterface
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{
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$multi = $this->ensureState();
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[$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($authority, \PHP_URL_HOST);
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$proxy = self::getProxyUrl($options['proxy'], $url);
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$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 => $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 & CurlClientState::$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.', get_debug_type($options['auth_ntlm'])));
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}
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$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') && \defined('CURLHEADER_SEPARATE')) {
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$curlopts[\CURLOPT_HEADEROPT] = \CURLHEADER_SEPARATE;
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}
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// curl's resolve feature varies by host:port but ours varies by host only, let's handle this with our own DNS map
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if (isset($multi->dnsCache->hostnames[$host])) {
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$options['resolve'] += [$host => $multi->dnsCache->hostnames[$host]];
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}
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if ($options['resolve'] || $multi->dnsCache->evictions) {
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// First reset any old DNS cache entries then add the new ones
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$resolve = $multi->dnsCache->evictions;
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$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 > CurlClientState::$curlVersion['version_number']) {
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// DNS cache removals require curl 7.42 or higher
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$multi->reset();
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}
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foreach ($options['resolve'] as $resolveHost => $ip) {
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$resolve[] = null === $ip ? "-$resolveHost:$port" : "$resolveHost:$port:$ip";
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$multi->dnsCache->hostnames[$resolveHost] = $ip;
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$multi->dnsCache->removals["-$resolveHost:$port"] = "-$resolveHost:$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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$body = $options['body'];
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foreach ($options['headers'] as $i => $header) {
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if (\is_string($body) && '' !== $body && 0 === stripos($header, 'Content-Length: ')) {
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// Let curl handle Content-Length headers
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unset($options['headers'][$i]);
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continue;
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}
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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)) {
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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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$curlopts[\CURLOPT_INFILESIZE] = (int) substr($options['normalized_headers']['content-length'][0], \strlen('Content-Length: '));
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}
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if (!isset($options['normalized_headers']['transfer-encoding'])) {
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$curlopts[\CURLOPT_HTTPHEADER][] = 'Transfer-Encoding:'.(isset($curlopts[\CURLOPT_INFILESIZE]) ? '' : ' chunked');
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}
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if ('POST' !== $method) {
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$curlopts[\CURLOPT_UPLOAD] = true;
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if (!isset($options['normalized_headers']['content-type']) && 0 !== ($curlopts[\CURLOPT_INFILESIZE] ?? null)) {
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$curlopts[\CURLOPT_HTTPHEADER][] = 'Content-Type: application/x-www-form-urlencoded';
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}
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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] = $options['bindto'];
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} elseif (!str_starts_with($options['bindto'], 'if!') && 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 * $options['max_duration'];
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}
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if (!empty($options['extra']['curl']) && \is_array($options['extra']['curl'])) {
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$this->validateExtraCurlOptions($options['extra']['curl']);
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$curlopts += $options['extra']['curl'];
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}
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if ($pushedResponse = $multi->pushedResponses[$url] ?? null) {
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unset($multi->pushedResponses[$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($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, $url));
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$curlopts += [\CURLOPT_SHARE => $multi->share];
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}
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foreach ($curlopts as $opt => $value) {
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if (null !== $value && !curl_setopt($ch, $opt, $value) && \CURLOPT_CERTINFO !== $opt && (!\defined('CURLOPT_HEADEROPT') || \CURLOPT_HEADEROPT !== $opt)) {
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$constantName = $this->findConstantName($opt);
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throw new TransportException(sprintf('Curl option "%s" is not supported.', $constantName ?? $opt));
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}
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}
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return $pushedResponse ?? new CurlResponse($multi, $ch, $options, $this->logger, $method, self::createRedirectResolver($options, $host), CurlClientState::$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($responses)) {
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throw new \TypeError(sprintf('"%s()" expects parameter 1 to be an iterable of CurlResponse objects, "%s" given.', __METHOD__, get_debug_type($responses)));
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}
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$multi = $this->ensureState();
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if (\is_resource($multi->handle) || $multi->handle instanceof \CurlMultiHandle) {
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$active = 0;
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while (\CURLM_CALL_MULTI_PERFORM === curl_multi_exec($multi->handle, $active)) {
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}
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}
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return new ResponseStream(CurlResponse::stream($responses, $timeout));
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}
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public function reset()
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{
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if (isset($this->multi)) {
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$this->multi->reset();
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}
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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] ?? [];
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foreach ($normalizedHeaders as $i => $v) {
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$normalizedHeaders[$i] = substr($v, \strlen($k) + 2);
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}
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if (($pushedResponse->requestHeaders[$k] ?? []) !== $normalizedHeaders) {
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return false;
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}
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}
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return true;
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}
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/**
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* Wraps the request's body callback to allow it to return strings longer than curl requested.
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*/
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private static function readRequestBody(int $length, \Closure $body, string &$buffer, bool &$eof): string
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{
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if (!$eof && \strlen($buffer) < $length) {
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if (!\is_string($data = $body($length))) {
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throw new TransportException(sprintf('The return value of the "body" option callback must be a string, "%s" returned.', get_debug_type($data)));
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}
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$buffer .= $data;
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$eof = '' === $data;
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}
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$data = substr($buffer, 0, $length);
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$buffer = substr($buffer, $length);
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return $data;
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}
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/**
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* Resolves relative URLs on redirects and deals with authentication headers.
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*
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* Work around CVE-2018-1000007: Authorization and Cookie headers should not follow redirects - fixed in Curl 7.64
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*/
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private static function createRedirectResolver(array $options, string $host): \Closure
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{
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$redirectHeaders = [];
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if (0 < $options['max_redirects']) {
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$redirectHeaders['host'] = $host;
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$redirectHeaders['with_auth'] = $redirectHeaders['no_auth'] = array_filter($options['headers'], static function ($h) {
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return 0 !== stripos($h, 'Host:');
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});
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if (isset($options['normalized_headers']['authorization'][0]) || isset($options['normalized_headers']['cookie'][0])) {
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$redirectHeaders['no_auth'] = array_filter($options['headers'], static function ($h) {
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return 0 !== stripos($h, 'Authorization:') && 0 !== stripos($h, 'Cookie:');
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});
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}
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}
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return static function ($ch, string $location, bool $noContent) use (&$redirectHeaders, $options) {
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try {
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$location = self::parseUrl($location);
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} catch (InvalidArgumentException $e) {
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return null;
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}
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if ($noContent && $redirectHeaders) {
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$filterContentHeaders = static function ($h) {
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return 0 !== stripos($h, 'Content-Length:') && 0 !== stripos($h, 'Content-Type:') && 0 !== stripos($h, 'Transfer-Encoding:');
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};
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$redirectHeaders['no_auth'] = array_filter($redirectHeaders['no_auth'], $filterContentHeaders);
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$redirectHeaders['with_auth'] = array_filter($redirectHeaders['with_auth'], $filterContentHeaders);
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}
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if ($redirectHeaders && $host = parse_url('http:'.$location['authority'], \PHP_URL_HOST)) {
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$requestHeaders = $redirectHeaders['host'] === $host ? $redirectHeaders['with_auth'] : $redirectHeaders['no_auth'];
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curl_setopt($ch, \CURLOPT_HTTPHEADER, $requestHeaders);
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} elseif ($noContent && $redirectHeaders) {
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curl_setopt($ch, \CURLOPT_HTTPHEADER, $redirectHeaders['with_auth']);
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}
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$url = self::parseUrl(curl_getinfo($ch, \CURLINFO_EFFECTIVE_URL));
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$url = self::resolveUrl($location, $url);
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curl_setopt($ch, \CURLOPT_PROXY, self::getProxyUrl($options['proxy'], $url));
|
|
|
|
return implode('', $url);
|
|
};
|
|
}
|
|
|
|
private function ensureState(): CurlClientState
|
|
{
|
|
if (!isset($this->multi)) {
|
|
$this->multi = new CurlClientState($this->maxHostConnections, $this->maxPendingPushes);
|
|
$this->multi->logger = $this->logger;
|
|
}
|
|
|
|
return $this->multi;
|
|
}
|
|
|
|
private function findConstantName(int $opt): ?string
|
|
{
|
|
$constants = array_filter(get_defined_constants(), static function ($v, $k) use ($opt) {
|
|
return $v === $opt && 'C' === $k[0] && (str_starts_with($k, 'CURLOPT_') || str_starts_with($k, 'CURLINFO_'));
|
|
}, \ARRAY_FILTER_USE_BOTH);
|
|
|
|
return key($constants);
|
|
}
|
|
|
|
/**
|
|
* Prevents overriding options that are set internally throughout the request.
|
|
*/
|
|
private function validateExtraCurlOptions(array $options): void
|
|
{
|
|
$curloptsToConfig = [
|
|
// options used in CurlHttpClient
|
|
\CURLOPT_HTTPAUTH => 'auth_ntlm',
|
|
\CURLOPT_USERPWD => 'auth_ntlm',
|
|
\CURLOPT_RESOLVE => 'resolve',
|
|
\CURLOPT_NOSIGNAL => 'timeout',
|
|
\CURLOPT_HTTPHEADER => 'headers',
|
|
\CURLOPT_INFILE => 'body',
|
|
\CURLOPT_READFUNCTION => 'body',
|
|
\CURLOPT_INFILESIZE => 'body',
|
|
\CURLOPT_POSTFIELDS => 'body',
|
|
\CURLOPT_UPLOAD => 'body',
|
|
\CURLOPT_INTERFACE => 'bindto',
|
|
\CURLOPT_TIMEOUT_MS => 'max_duration',
|
|
\CURLOPT_TIMEOUT => 'max_duration',
|
|
\CURLOPT_MAXREDIRS => 'max_redirects',
|
|
\CURLOPT_POSTREDIR => 'max_redirects',
|
|
\CURLOPT_PROXY => 'proxy',
|
|
\CURLOPT_NOPROXY => 'no_proxy',
|
|
\CURLOPT_SSL_VERIFYPEER => 'verify_peer',
|
|
\CURLOPT_SSL_VERIFYHOST => 'verify_host',
|
|
\CURLOPT_CAINFO => 'cafile',
|
|
\CURLOPT_CAPATH => 'capath',
|
|
\CURLOPT_SSL_CIPHER_LIST => 'ciphers',
|
|
\CURLOPT_SSLCERT => 'local_cert',
|
|
\CURLOPT_SSLKEY => 'local_pk',
|
|
\CURLOPT_KEYPASSWD => 'passphrase',
|
|
\CURLOPT_CERTINFO => 'capture_peer_cert_chain',
|
|
\CURLOPT_USERAGENT => 'normalized_headers',
|
|
\CURLOPT_REFERER => 'headers',
|
|
// options used in CurlResponse
|
|
\CURLOPT_NOPROGRESS => 'on_progress',
|
|
\CURLOPT_PROGRESSFUNCTION => 'on_progress',
|
|
];
|
|
|
|
if (\defined('CURLOPT_UNIX_SOCKET_PATH')) {
|
|
$curloptsToConfig[\CURLOPT_UNIX_SOCKET_PATH] = 'bindto';
|
|
}
|
|
|
|
if (\defined('CURLOPT_PINNEDPUBLICKEY')) {
|
|
$curloptsToConfig[\CURLOPT_PINNEDPUBLICKEY] = 'peer_fingerprint';
|
|
}
|
|
|
|
$curloptsToCheck = [
|
|
\CURLOPT_PRIVATE,
|
|
\CURLOPT_HEADERFUNCTION,
|
|
\CURLOPT_WRITEFUNCTION,
|
|
\CURLOPT_VERBOSE,
|
|
\CURLOPT_STDERR,
|
|
\CURLOPT_RETURNTRANSFER,
|
|
\CURLOPT_URL,
|
|
\CURLOPT_FOLLOWLOCATION,
|
|
\CURLOPT_HEADER,
|
|
\CURLOPT_CONNECTTIMEOUT,
|
|
\CURLOPT_CONNECTTIMEOUT_MS,
|
|
\CURLOPT_HTTP_VERSION,
|
|
\CURLOPT_PORT,
|
|
\CURLOPT_DNS_USE_GLOBAL_CACHE,
|
|
\CURLOPT_PROTOCOLS,
|
|
\CURLOPT_REDIR_PROTOCOLS,
|
|
\CURLOPT_COOKIEFILE,
|
|
\CURLINFO_REDIRECT_COUNT,
|
|
];
|
|
|
|
if (\defined('CURLOPT_HTTP09_ALLOWED')) {
|
|
$curloptsToCheck[] = \CURLOPT_HTTP09_ALLOWED;
|
|
}
|
|
|
|
if (\defined('CURLOPT_HEADEROPT')) {
|
|
$curloptsToCheck[] = \CURLOPT_HEADEROPT;
|
|
}
|
|
|
|
$methodOpts = [
|
|
\CURLOPT_POST,
|
|
\CURLOPT_PUT,
|
|
\CURLOPT_CUSTOMREQUEST,
|
|
\CURLOPT_HTTPGET,
|
|
\CURLOPT_NOBODY,
|
|
];
|
|
|
|
foreach ($options as $opt => $optValue) {
|
|
if (isset($curloptsToConfig[$opt])) {
|
|
$constName = $this->findConstantName($opt) ?? $opt;
|
|
throw new InvalidArgumentException(sprintf('Cannot set "%s" with "extra.curl", use option "%s" instead.', $constName, $curloptsToConfig[$opt]));
|
|
}
|
|
|
|
if (\in_array($opt, $methodOpts)) {
|
|
throw new InvalidArgumentException('The HTTP method cannot be overridden using "extra.curl".');
|
|
}
|
|
|
|
if (\in_array($opt, $curloptsToCheck)) {
|
|
$constName = $this->findConstantName($opt) ?? $opt;
|
|
throw new InvalidArgumentException(sprintf('Cannot set "%s" with "extra.curl".', $constName));
|
|
}
|
|
}
|
|
}
|
|
}
|