<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpClient;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerInterface;
use Symfony\Component\HttpClient\Exception\InvalidArgumentException;
use Symfony\Component\HttpClient\Exception\TransportException;
use Symfony\Component\HttpClient\Internal\CurlClientState;
use Symfony\Component\HttpClient\Internal\PushedResponse;
use Symfony\Component\HttpClient\Response\CurlResponse;
use Symfony\Component\HttpClient\Response\ResponseStream;
use Symfony\Contracts\HttpClient\HttpClientInterface;
use Symfony\Contracts\HttpClient\ResponseInterface;
use Symfony\Contracts\HttpClient\ResponseStreamInterface;
use Symfony\Contracts\Service\ResetInterface;
/**
* A performant implementation of the HttpClientInterface contracts based on the curl extension.
*
* This provides fully concurrent HTTP requests, with transparent
* HTTP/2 push when a curl version that supports it is installed.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
final class CurlHttpClient implements HttpClientInterface, LoggerAwareInterface, ResetInterface
{
use HttpClientTrait;
private $defaultOptions = self::OPTIONS_DEFAULTS + [
'auth_ntlm' => null, // array|string - an array containing the username as first value, and optionally the
// password as the second one; or string like username:password - enabling NTLM auth
'extra' => [
'curl' => [], // A list of extra curl options indexed by their corresponding CURLOPT_*
],
];
private static $emptyDefaults = self::OPTIONS_DEFAULTS + ['auth_ntlm' => null];
/**
* @var LoggerInterface|null
*/
private $logger;
/**
* An internal object to share state between the client and its responses.
*
* @var CurlClientState
*/
private $multi;
/**
* @param array $defaultOptions Default request's options
* @param int $maxHostConnections The maximum number of connections to a single host
* @param int $maxPendingPushes The maximum number of pushed responses to accept in the queue
*
* @see HttpClientInterface::OPTIONS_DEFAULTS for available options
*/
public function __construct(array $defaultOptions = [], int $maxHostConnections = 6, int $maxPendingPushes = 50)
{
if (!\extension_loaded('curl')) {
throw new \LogicException('You cannot use the "Symfony\Component\HttpClient\CurlHttpClient" as the "curl" extension is not installed.');
}
$this->defaultOptions['buffer'] = $this->defaultOptions['buffer'] ?? \Closure::fromCallable([__CLASS__, 'shouldBuffer']);
if ($defaultOptions) {
[, $this->defaultOptions] = self::prepareRequest(null, null, $defaultOptions, $this->defaultOptions);
}
$this->multi = new CurlClientState($maxHostConnections, $maxPendingPushes);
}
public function setLogger(LoggerInterface $logger): void
{
$this->logger = $this->multi->logger = $logger;
}
/**
* @see HttpClientInterface::OPTIONS_DEFAULTS for available options
*
* {@inheritdoc}
*/
public function request(string $method, string $url, array $options = []): ResponseInterface
{
[$url, $options] = self::prepareRequest($method, $url, $options, $this->defaultOptions);
$scheme = $url['scheme'];
$authority = $url['authority'];
$host = parse_url($authority, \PHP_URL_HOST);
$proxy = self::getProxyUrl($options['proxy'], $url);
$url = implode('', $url);
if (!isset($options['normalized_headers']['user-agent'])) {
$options['headers'][] = 'User-Agent: Symfony HttpClient/Curl';
}
$curlopts = [
\CURLOPT_URL => $url,
\CURLOPT_TCP_NODELAY => true,
\CURLOPT_PROTOCOLS => \CURLPROTO_HTTP | \CURLPROTO_HTTPS,
\CURLOPT_REDIR_PROTOCOLS => \CURLPROTO_HTTP | \CURLPROTO_HTTPS,
\CURLOPT_FOLLOWLOCATION => true,
\CURLOPT_MAXREDIRS => 0 < $options['max_redirects'] ? $options['max_redirects'] : 0,
\CURLOPT_COOKIEFILE => '', // Keep track of cookies during redirects
\CURLOPT_TIMEOUT => 0,
\CURLOPT_PROXY => $proxy,
\CURLOPT_NOPROXY => $options['no_proxy'] ?? $_SERVER['no_proxy'] ?? $_SERVER['NO_PROXY'] ?? '',
\CURLOPT_SSL_VERIFYPEER => $options['verify_peer'],
\CURLOPT_SSL_VERIFYHOST => $options['verify_host'] ? 2 : 0,
\CURLOPT_CAINFO => $options['cafile'],
\CURLOPT_CAPATH => $options['capath'],
\CURLOPT_SSL_CIPHER_LIST => $options['ciphers'],
\CURLOPT_SSLCERT => $options['local_cert'],
\CURLOPT_SSLKEY => $options['local_pk'],
\CURLOPT_KEYPASSWD => $options['passphrase'],
\CURLOPT_CERTINFO => $options['capture_peer_cert_chain'],
];
if (1.0 === (float) $options['http_version']) {
$curlopts[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_0;
} elseif (1.1 === (float) $options['http_version']) {
$curlopts[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_1;
} elseif (\defined('CURL_VERSION_HTTP2') && (\CURL_VERSION_HTTP2 & CurlClientState::$curlVersion['features']) && ('https:' === $scheme || 2.0 === (float) $options['http_version'])) {
$curlopts[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_2_0;
}
if (isset($options['auth_ntlm'])) {
$curlopts[\CURLOPT_HTTPAUTH] = \CURLAUTH_NTLM;
$curlopts[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_1;
if (\is_array($options['auth_ntlm'])) {
$count = \count($options['auth_ntlm']);
if ($count <= 0 || $count > 2) {
throw new InvalidArgumentException(sprintf('Option "auth_ntlm" must contain 1 or 2 elements, %d given.', $count));
}
$options['auth_ntlm'] = implode(':', $options['auth_ntlm']);
}
if (!\is_string($options['auth_ntlm'])) {
throw new InvalidArgumentException(sprintf('Option "auth_ntlm" must be a string or an array, "%s" given.', get_debug_type($options['auth_ntlm'])));
}
$curlopts[\CURLOPT_USERPWD] = $options['auth_ntlm'];
}
if (!\ZEND_THREAD_SAFE) {
$curlopts[\CURLOPT_DNS_USE_GLOBAL_CACHE] = false;
}
if (\defined('CURLOPT_HEADEROPT') && \defined('CURLHEADER_SEPARATE')) {
$curlopts[\CURLOPT_HEADEROPT] = \CURLHEADER_SEPARATE;
}
// curl's resolve feature varies by host:port but ours varies by host only, let's handle this with our own DNS map
if (isset($this->multi->dnsCache->hostnames[$host])) {
$options['resolve'] += [$host => $this->multi->dnsCache->hostnames[$host]];
}
if ($options['resolve'] || $this->multi->dnsCache->evictions) {
// First reset any old DNS cache entries then add the new ones
$resolve = $this->multi->dnsCache->evictions;
$this->multi->dnsCache->evictions = [];
$port = parse_url($authority, \PHP_URL_PORT) ?: ('http:' === $scheme ? 80 : 443);
if ($resolve && 0x072A00 > CurlClientState::$curlVersion['version_number']) {
// DNS cache removals require curl 7.42 or higher
$this->multi->reset();
}
foreach ($options['resolve'] as $host => $ip) {
$resolve[] = null === $ip ? "-$host:$port" : "$host:$port:$ip";
$this->multi->dnsCache->hostnames[$host] = $ip;
$this->multi->dnsCache->removals["-$host:$port"] = "-$host:$port";
}
$curlopts[\CURLOPT_RESOLVE] = $resolve;
}
if ('POST' === $method) {
// Use CURLOPT_POST to have browser-like POST-to-GET redirects for 301, 302 and 303
$curlopts[\CURLOPT_POST] = true;
} elseif ('HEAD' === $method) {
$curlopts[\CURLOPT_NOBODY] = true;
} else {
$curlopts[\CURLOPT_CUSTOMREQUEST] = $method;
}
if ('\\' !== \DIRECTORY_SEPARATOR && $options['timeout'] < 1) {
$curlopts[\CURLOPT_NOSIGNAL] = true;
}
if (\extension_loaded('zlib') && !isset($options['normalized_headers']['accept-encoding'])) {
$options['headers'][] = 'Accept-Encoding: gzip'; // Expose only one encoding, some servers mess up when more are provided
}
$body = $options['body'];
foreach ($options['headers'] as $i => $header) {
if (\is_string($body) && '' !== $body && 0 === stripos($header, 'Content-Length: ')) {
// Let curl handle Content-Length headers
unset($options['headers'][$i]);
continue;
}
if (':' === $header[-2] && \strlen($header) - 2 === strpos($header, ': ')) {
// curl requires a special syntax to send empty headers
$curlopts[\CURLOPT_HTTPHEADER][] = substr_replace($header, ';', -2);
} else {
$curlopts[\CURLOPT_HTTPHEADER][] = $header;
}
}
// Prevent curl from sending its default Accept and Expect headers
foreach (['accept', 'expect'] as $header) {
if (!isset($options['normalized_headers'][$header][0])) {
$curlopts[\CURLOPT_HTTPHEADER][] = $header.':';
}
}
if (!\is_string($body)) {
if (\is_resource($body)) {
$curlopts[\CURLOPT_INFILE] = $body;
} else {
$eof = false;
$buffer = '';
$curlopts[\CURLOPT_READFUNCTION] = static function ($ch, $fd, $length) use ($body, &$buffer, &$eof) {
return self::readRequestBody($length, $body, $buffer, $eof);
};
}
if (isset($options['normalized_headers']['content-length'][0])) {
$curlopts[\CURLOPT_INFILESIZE] = (int) substr($options['normalized_headers']['content-length'][0], \strlen('Content-Length: '));
}
if (!isset($options['normalized_headers']['transfer-encoding'])) {
$curlopts[\CURLOPT_HTTPHEADER][] = 'Transfer-Encoding:'.(isset($curlopts[\CURLOPT_INFILESIZE]) ? '' : ' chunked');
}
if ('POST' !== $method) {
$curlopts[\CURLOPT_UPLOAD] = true;
if (!isset($options['normalized_headers']['content-type']) && 0 !== ($curlopts[\CURLOPT_INFILESIZE] ?? null)) {
$curlopts[\CURLOPT_HTTPHEADER][] = 'Content-Type: application/x-www-form-urlencoded';
}
}
} elseif ('' !== $body || 'POST' === $method) {
$curlopts[\CURLOPT_POSTFIELDS] = $body;
}
if ($options['peer_fingerprint']) {
if (!isset($options['peer_fingerprint']['pin-sha256'])) {
throw new TransportException(__CLASS__.' supports only "pin-sha256" fingerprints.');
}
$curlopts[\CURLOPT_PINNEDPUBLICKEY] = 'sha256//'.implode(';sha256//', $options['peer_fingerprint']['pin-sha256']);
}
if ($options['bindto']) {
if (file_exists($options['bindto'])) {
$curlopts[\CURLOPT_UNIX_SOCKET_PATH] = $options['bindto'];
} elseif (!str_starts_with($options['bindto'], 'if!') && preg_match('/^(.*):(\d+)$/', $options['bindto'], $matches)) {
$curlopts[\CURLOPT_INTERFACE] = $matches[1];
$curlopts[\CURLOPT_LOCALPORT] = $matches[2];
} else {
$curlopts[\CURLOPT_INTERFACE] = $options['bindto'];
}
}
if (0 < $options['max_duration']) {
$curlopts[\CURLOPT_TIMEOUT_MS] = 1000 * $options['max_duration'];
}
if (!empty($options['extra']['curl']) && \is_array($options['extra']['curl'])) {
$this->validateExtraCurlOptions($options['extra']['curl']);
$curlopts += $options['extra']['curl'];
}
if ($pushedResponse = $this->multi->pushedResponses[$url] ?? null) {
unset($this->multi->pushedResponses[$url]);
if (self::acceptPushForRequest($method, $options, $pushedResponse)) {
$this->logger && $this->logger->debug(sprintf('Accepting pushed response: "%s %s"', $method, $url));
// Reinitialize the pushed response with request's options
$ch = $pushedResponse->handle;
$pushedResponse = $pushedResponse->response;
$pushedResponse->__construct($this->multi, $url, $options, $this->logger);
} else {
$this->logger && $this->logger->debug(sprintf('Rejecting pushed response: "%s"', $url));
$pushedResponse = null;
}
}
if (!$pushedResponse) {
$ch = curl_init();
$this->logger && $this->logger->info(sprintf('Request: "%s %s"', $method, $url));
$curlopts += [\CURLOPT_SHARE => $this->multi->share];
}
foreach ($curlopts as $opt => $value) {
if (null !== $value && !curl_setopt($ch, $opt, $value) && \CURLOPT_CERTINFO !== $opt && (!\defined('CURLOPT_HEADEROPT') || \CURLOPT_HEADEROPT !== $opt)) {
$constantName = $this->findConstantName($opt);
throw new TransportException(sprintf('Curl option "%s" is not supported.', $constantName ?? $opt));
}
}
return $pushedResponse ?? new CurlResponse($this->multi, $ch, $options, $this->logger, $method, self::createRedirectResolver($options, $host), CurlClientState::$curlVersion['version_number']);
}
/**
* {@inheritdoc}
*/
public function stream($responses, float $timeout = null): ResponseStreamInterface
{
if ($responses instanceof CurlResponse) {
$responses = [$responses];
} elseif (!is_iterable($responses)) {
throw new \TypeError(sprintf('"%s()" expects parameter 1 to be an iterable of CurlResponse objects, "%s" given.', __METHOD__, get_debug_type($responses)));
}
if (\is_resource($this->multi->handle) || $this->multi->handle instanceof \CurlMultiHandle) {
$active = 0;
while (\CURLM_CALL_MULTI_PERFORM === curl_multi_exec($this->multi->handle, $active)) {
}
}
return new ResponseStream(CurlResponse::stream($responses, $timeout));
}
public function reset()
{
$this->multi->reset();
}
/**
* Accepts pushed responses only if their headers related to authentication match the request.
*/
private static function acceptPushForRequest(string $method, array $options, PushedResponse $pushedResponse): bool
{
if ('' !== $options['body'] || $method !== $pushedResponse->requestHeaders[':method'][0]) {
return false;
}
foreach (['proxy', 'no_proxy', 'bindto', 'local_cert', 'local_pk'] as $k) {
if ($options[$k] !== $pushedResponse->parentOptions[$k]) {
return false;
}
}
foreach (['authorization', 'cookie', 'range', 'proxy-authorization'] as $k) {
$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.', get_debug_type($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, bool $noContent) use (&$redirectHeaders, $options) {
try {
$location = self::parseUrl($location);
} catch (InvalidArgumentException $e) {
return null;
}
if ($noContent && $redirectHeaders) {
$filterContentHeaders = static function ($h) {
return 0 !== stripos($h, 'Content-Length:') && 0 !== stripos($h, 'Content-Type:') && 0 !== stripos($h, 'Transfer-Encoding:');
};
$redirectHeaders['no_auth'] = array_filter($redirectHeaders['no_auth'], $filterContentHeaders);
$redirectHeaders['with_auth'] = array_filter($redirectHeaders['with_auth'], $filterContentHeaders);
}
if ($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, $requestHeaders);
} elseif ($noContent && $redirectHeaders) {
curl_setopt($ch, \CURLOPT_HTTPHEADER, $redirectHeaders['with_auth']);
}
$url = self::parseUrl(curl_getinfo($ch, \CURLINFO_EFFECTIVE_URL));
$url = self::resolveUrl($location, $url);
curl_setopt($ch, \CURLOPT_PROXY, self::getProxyUrl($options['proxy'], $url));
return implode('', $url);
};
}
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));
}
}
}
}