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<?php namespace GuzzleHttp\Handler; use GuzzleHttp\Exception\ConnectException; use GuzzleHttp\Exception\RequestException; use GuzzleHttp\Multiplexing; use GuzzleHttp\Promise as P; use GuzzleHttp\Promise\FulfilledPromise; use GuzzleHttp\Promise\PromiseInterface; use GuzzleHttp\Psr7; use GuzzleHttp\Psr7\LazyOpenStream; use GuzzleHttp\Psr7\Uri; use GuzzleHttp\TransferStats; use GuzzleHttp\TransportSharing; use GuzzleHttp\Utils; use Psr\Http\Message\RequestInterface; use Psr\Http\Message\UriInterface; /** * Creates curl resources from a request * * @final */ class CurlFactory implements CurlFactoryInterface { public const CURL_VERSION_STR = 'curl_version'; private const DELEGATED_PROXY_TUNNEL_OWNER = 'proxy-tunnel:delegated-to-libcurl'; /** * String-valued proxy credential cURL options whose values feed the * connection-reuse section signatures. Stringable values are cast * exactly once, before signature computation, so the signature and * ext-curl observe the same string; a stateful __toString() could * otherwise produce one value for the signature and a different one on * the wire, giving two credentials the same section. Numeric options * (CURLOPT_PROXYTYPE, CURLOPT_PROXY_SSLVERSION) and blob options * (CURLOPT_PROXY_SSLCERT_BLOB) are deliberately excluded. */ private const STRINGABLE_PROXY_CREDENTIAL_OPTIONS = [ 'CURLOPT_PROXYUSERPWD', 'CURLOPT_PROXYUSERNAME', 'CURLOPT_PROXYPASSWORD', 'CURLOPT_PROXY_SSLCERT', 'CURLOPT_PROXY_SSLKEY', 'CURLOPT_PROXY_KEYPASSWD', 'CURLOPT_PROXY_TLSAUTH_USERNAME', 'CURLOPT_PROXY_TLSAUTH_PASSWORD', ]; /** * @deprecated */ public const LOW_CURL_VERSION_NUMBER = '7.21.2'; /** * @var resource[]|\CurlHandle[] */ private $handles = []; /** * @var string|null Owner signature of the proxy tunnels that pooled idle * handles may still hold */ private $proxyTunnelOwner; /** * @var bool Whether an in-domain handle has been pooled since the last purge */ private $poolMayHoldTunnels = false; /** * @var int Total number of idle handles to keep in cache */ private $maxHandles; /** * @var resource|\CurlShareHandle|null */ private $shareHandle; /** * @var string */ private $shareMode; /** * @var bool Whether the configured share handle may own a connection * cache populated outside this factory */ private $opaqueShareConnectionCache = false; /** * @param int $maxHandles Maximum number of idle handles. * @param resource|\CurlShareHandle|CurlShareHandleState|null $shareHandle */ public function __construct(int $maxHandles, string $shareMode = TransportSharing::NONE, $shareHandle = null) { $this->maxHandles = $maxHandles; $this->shareMode = CurlShareHandleState::normalizeMode($shareMode, 'transport_sharing'); if ($shareHandle instanceof CurlShareHandleState) { if ($shareHandle->mode !== $this->shareMode) { throw new \InvalidArgumentException('The cURL share handle state mode does not match the configured transport sharing mode.'); } // A Guzzle-created handler-lifetime state locks only DNS and TLS // session data, so its handle can never own a connection cache. $shareHandle = $shareHandle->handle; } elseif ($shareHandle !== null) { // An externally supplied handle's lock set and cached contents // cannot be inspected from PHP, so it may own a connection cache // populated outside this factory. $this->opaqueShareConnectionCache = true; } if ($this->shareMode === TransportSharing::NONE && $shareHandle !== null) { throw new \InvalidArgumentException('A cURL share handle cannot be provided when transport sharing is disabled.'); } if ($this->shareMode !== TransportSharing::NONE && $shareHandle === null) { throw new \InvalidArgumentException('A cURL share handle is required when transport sharing is enabled.'); } if ($shareHandle !== null && !self::isCurlShareHandle($shareHandle)) { throw new \InvalidArgumentException('A cURL share handle must be an instance of CurlShareHandle or a curl_share resource.'); } $this->shareHandle = $shareHandle; } /** * @param mixed $value */ private static function isCurlShareHandle($value): bool { if (\PHP_VERSION_ID < 80000) { return \is_resource($value) && \get_resource_type($value) === 'curl_share'; } return $value instanceof \CurlShareHandle; } public function create(RequestInterface $request, array $options): EasyHandle { self::validateRequestUriScheme($request); if (isset($options['on_trailers']) && !\is_callable($options['on_trailers'])) { throw new \InvalidArgumentException('on_trailers must be callable'); } $protocolVersion = $request->getProtocolVersion(); if ('' === $protocolVersion) { \trigger_deprecation('guzzlehttp/guzzle', '7.11', 'Sending a request with an empty protocol version is deprecated; guzzlehttp/guzzle 8.0 will reject empty protocol versions.'); $protocolVersion = '1.1'; $request = Psr7\Utils::modifyRequest($request, ['version' => $protocolVersion]); } $multiplex = self::normalizeMultiplex($options); $requiredMultiplex = \in_array($multiplex, [Multiplexing::REQUIRE_EAGER, Multiplexing::REQUIRE_WAIT], true); if ($requiredMultiplex && isset($options['curl']) && \is_array($options['curl'])) { $requiredModeConflicts = [ \CURLOPT_HTTP_VERSION => ['CURLOPT_HTTP_VERSION', 'the request protocol version'], \CURLOPT_URL => ['CURLOPT_URL', 'the request URI'], \CURLOPT_FOLLOWLOCATION => ['CURLOPT_FOLLOWLOCATION', 'the "allow_redirects" request option'], ]; foreach ($requiredModeConflicts as $option => [$name, $replacement]) { if (\array_key_exists($option, $options['curl'])) { // Key presence alone conflicts: whatever the raw value, // it is a second authority over the protocol or route, // applied after the required mode's decisions. throw new \InvalidArgumentException(\sprintf('The "multiplex" request option cannot be required when the raw %s cURL option is set; remove the raw option and use %s instead.', $name, $replacement)); } } } if ('2' === $protocolVersion || '2.0' === $protocolVersion) { if (!CurlVersion::supportsHttp2()) { if ($requiredMultiplex) { throw new ConnectException('Required multiplexing needs libcurl 8.14.0 or newer built with HTTP/2 support.', $request); } throw new ConnectException('HTTP/2 is supported by the cURL handler, however libcurl is built without HTTP/2 support.', $request); } } elseif ('1.0' !== $protocolVersion && '1.1' !== $protocolVersion) { throw new ConnectException(sprintf('HTTP/%s is not supported by the cURL handler.', $protocolVersion), $request); } if (isset($options['curl']['body_as_string'])) { $options['_body_as_string'] = $options['curl']['body_as_string']; unset($options['curl']['body_as_string']); } self::triggerUnsupportedRequestOptionDeprecations($options); self::triggerUnsupportedCurlOptionDeprecations($options); self::triggerConflictingCurlOptionDeprecations($options); // Capture the managed Proxy-Authorization values before header // serialization so they never enter the origin header list, and // record whether a deprecated raw CURLOPT_HTTPHEADER value replaces // every generated header, the managed values included. Key presence // alone replaces: an empty or null raw value still suppresses the // generated list. $managedProxyAuthorization = self::managedProxyAuthorizationHeaderLines($request); $rawHttpHeadersReplaceManaged = isset($options['curl']) && \is_array($options['curl']) && \array_key_exists(\CURLOPT_HTTPHEADER, $options['curl']); $easy = new EasyHandle(); $easy->request = $request; $easy->options = $options; $conf = $this->getDefaultConf($easy); $this->applyMethod($easy, $conf); $this->applyHandlerOptions($easy, $conf); $this->applyHeaders($easy, $conf); unset($conf['_headers']); // Add handler options from the request configuration options if (isset($options['curl'])) { $conf = \array_replace($conf, $options['curl']); } self::assertFinalProxyOptionTypes($conf, $requiredMultiplex && 'https' !== $request->getUri()->getScheme()); self::isolatePreProxyOnAffectedCurl($conf); self::normalizeStringableProxyCredentialOptions($conf); if ($requiredMultiplex) { self::assertRequiredMultiplexRouteDirect($easy, $conf); self::assertRequiredMultiplexAuthSupported($conf); } self::normalizeCurlHeaderOptions($conf); self::applyProxyAuthorizationHeaderHandling($request, $conf); self::applyManagedProxyAuthorization($request, $conf, $managedProxyAuthorization, $rawHttpHeadersReplaceManaged); // Validate the appended managed lines too: a custom RequestInterface // can bypass a normal PSR-7 implementation's header validation. self::normalizeCurlHeaderOptions($conf); $this->rejectRequestLevelShareConflict($options); self::rejectRequestLevelShareWithProxyAuth($request, $options, $conf); if ($this->shareHandle !== null) { // Conservative blanket mode: a configured share handle hides the // pooled connections' provenance, so sectioned reuse cannot reason // about them. self::forceFreshConnectionForAuthenticatedProxy($request, $conf); $this->isolateOpaqueShareAnonymousProxyTunnel($request, $conf); } else { $signature = self::proxyTunnelSignature($request, $conf); $easy->proxyTunnelSignature = $signature; if ($signature !== null && $signature !== $this->proxyTunnelOwner) { if ($this->poolMayHoldTunnels) { // Pooled idle handles may hold a different owner's tunnel. $this->discardIdleHandles(); $this->poolMayHoldTunnels = false; } // The first in-domain owner latches without purging: the pool // provably holds no in-domain tunnel yet. $this->proxyTunnelOwner = $signature; } } $easy->effectiveProxy = self::getEffectiveProxy($conf); $conf[\CURLOPT_HEADERFUNCTION] = $this->createHeaderFn($easy); if ($this->shareHandle !== null) { if (!\defined('CURLOPT_SHARE')) { throw new \InvalidArgumentException('The configured cURL share handle requires CURLOPT_SHARE, but it is not available in the installed PHP cURL extension.'); } $conf[(int) \constant('CURLOPT_SHARE')] = $this->shareHandle; } if (\defined('CURLOPT_PIPEWAIT')) { $easy->usesPipewait = !empty($conf[(int) \constant('CURLOPT_PIPEWAIT')]); } $handle = $this->handles ? \array_pop($this->handles) : \curl_init(); if (false === $handle) { throw new \RuntimeException('Can not initialize cURL handle.'); } $easy->handle = $handle; try { $this->applyCurlOptions($handle, $conf); } catch (\Throwable $e) { if (PHP_VERSION_ID < 80000 && \is_resource($handle)) { \curl_close($handle); } unset($easy->handle); throw $e; } return $easy; } /** * @param resource|\CurlHandle $handle * @param array<int|string, mixed> $conf */ private function applyCurlOptions($handle, array $conf): void { foreach ($conf as $option => $value) { if (!\is_int($option)) { throw new \InvalidArgumentException(\sprintf( 'Invalid cURL option %s.', self::formatCurlOption($option) )); } try { $success = curl_setopt($handle, $option, $value); } catch (\Throwable $e) { throw new \InvalidArgumentException( \sprintf( 'Unable to set cURL option %s: %s', self::formatCurlOption($option), $e->getMessage() ), 0, $e ); } if (!$success) { throw new \InvalidArgumentException(\sprintf( 'Unable to set cURL option %s.', self::formatCurlOption($option) )); } } } /** * @param array<int|string, mixed> $conf */ private static function normalizeStringableProxyCredentialOptions(array &$conf): void { foreach (self::STRINGABLE_PROXY_CREDENTIAL_OPTIONS as $name) { if (!\defined($name)) { continue; } $option = (int) \constant($name); if (!isset($conf[$option]) || !\is_object($conf[$option]) || !\method_exists($conf[$option], '__toString')) { continue; } try { $conf[$option] = (string) $conf[$option]; } catch (\Throwable $e) { // Wrap the failure exactly as applyCurlOptions() does for a // value that cannot be applied. throw new \InvalidArgumentException( \sprintf( 'Unable to set cURL option %s: %s', self::formatCurlOption($option), $e->getMessage() ), 0, $e ); } } } private function rejectRequestLevelShareConflict(array $options): void { if ($this->shareHandle === null) { return; } if ( !\defined('CURLOPT_SHARE') || !isset($options['curl']) || !\is_array($options['curl']) || !\array_key_exists((int) \constant('CURLOPT_SHARE'), $options['curl']) ) { return; } throw new \InvalidArgumentException('The request-level CURLOPT_SHARE cURL option cannot be combined with configured transport sharing.'); } private static function normalizeMultiplex(array $options): ?string { $multiplex = $options['multiplex'] ?? null; if ($multiplex === null) { // Absent/null leaves multiplexing to libcurl: no CURLOPT_PIPEWAIT // is written and no guarantees apply. return null; } if (!\in_array($multiplex, [Multiplexing::NONE, Multiplexing::EAGER, Multiplexing::WAIT, Multiplexing::REQUIRE_EAGER, Multiplexing::REQUIRE_WAIT], true)) { throw new \InvalidArgumentException(\sprintf( 'The "multiplex" option must be null or a GuzzleHttp\\Multiplexing::* constant; received %s.', \get_debug_type($multiplex) )); } return $multiplex; } private static function assertRequiredMultiplexSupported(EasyHandle $easy): void { if (!CurlVersion::supportsRequiredMultiplex()) { throw new ConnectException('Required multiplexing needs libcurl 8.14.0 or newer built with HTTP/2 support.', $easy->request); } } /** * Required multiplexing sends cleartext requests with HTTP/2 prior * knowledge, which an HTTP proxy hop silently downgrades, so the request * must reach the origin directly. The check runs against the final * merged cURL configuration because deprecated raw proxy options are * applied after Guzzle's own decisions and may add, replace, or disable * the selected proxy. Value types that ext-curl would coerce are * rejected as ambiguous, and only the exact CURLOPT_NOPROXY wildcard '*' * counts as disabling the primary proxy and pre-proxy: host-specific * patterns are conservatively treated as leaving them active. * * @param array<int|string, mixed> $conf */ private static function assertRequiredMultiplexRouteDirect(EasyHandle $easy, array $conf): void { if ('https' === $easy->request->getUri()->getScheme()) { return; } $proxyOptions = [\CURLOPT_PROXY => 'CURLOPT_PROXY']; if (\defined('CURLOPT_NOPROXY')) { $proxyOptions[(int) \constant('CURLOPT_NOPROXY')] = 'CURLOPT_NOPROXY'; } if (\defined('CURLOPT_PRE_PROXY')) { $proxyOptions[(int) \constant('CURLOPT_PRE_PROXY')] = 'CURLOPT_PRE_PROXY'; } foreach ($proxyOptions as $option => $name) { if (\array_key_exists($option, $conf) && !\is_string($conf[$option])) { throw new \InvalidArgumentException(\sprintf('The "multiplex" request option cannot be required when the final %s cURL option value is not a string.', $name)); } } if (\defined('CURLOPT_NOPROXY') && ($conf[(int) \constant('CURLOPT_NOPROXY')] ?? null) === '*') { // libcurl's exact wildcard disables the primary proxy and the // pre-proxy together, leaving a direct route. return; } if (self::getEffectiveProxy($conf) !== null || (\defined('CURLOPT_PRE_PROXY') && ($conf[(int) \constant('CURLOPT_PRE_PROXY')] ?? '') !== '') ) { throw new ConnectException('Required multiplexing cannot be guaranteed for cleartext requests sent through a proxy.', $easy->request); } } /** * libcurl forces NTLM-authenticated transfers onto HTTP/1.1: when the * server picks NTLM from the offered mask, the connection is closed and * the request is retried over HTTP/1.1 whatever HTTP version was asked * for, silently defeating the required protocol guarantee on both * cleartext and TLS routes. The final merged mask is checked so the * deprecated "auth" request option and the raw CURLOPT_HTTPAUTH cURL * option are both covered, and any mask permitting NTLM, such as * CURLAUTH_ANY, is rejected because the selection is server-controlled. * * @param array<int|string, mixed> $conf */ private static function assertRequiredMultiplexAuthSupported(array $conf): void { if (!\array_key_exists(\CURLOPT_HTTPAUTH, $conf)) { return; } $auth = $conf[\CURLOPT_HTTPAUTH]; if (!\is_scalar($auth)) { throw new \InvalidArgumentException('The "multiplex" request option cannot be required when the final CURLOPT_HTTPAUTH cURL option value is not an integer.'); } $ntlmBits = \CURLAUTH_NTLM; if (\defined('CURLAUTH_NTLM_WB')) { $ntlmBits |= (int) \constant('CURLAUTH_NTLM_WB'); } if (((int) $auth & $ntlmBits) !== 0) { throw new \InvalidArgumentException('The "multiplex" request option cannot be required when the final CURLOPT_HTTPAUTH cURL option value permits NTLM; libcurl retries NTLM authentication over HTTP/1.1.'); } } /** * @param mixed $proxyConf */ private static function assertResolvedProxySupported(RequestInterface $request, $proxyConf): void { if (!\is_string($proxyConf) || $proxyConf === '') { return; } $scheme = self::proxyScheme($proxyConf); if ($scheme !== null && \preg_match('/^[a-z][a-z0-9.+-]*$/D', $scheme) !== 1) { throw new RequestException('The proxy URL is malformed.', $request); } if ($scheme === 'https' && !CurlVersion::supportsHttpsProxy()) { throw new RequestException('HTTPS proxies are not supported by the installed libcurl; libcurl 7.52.0 or newer built with HTTPS-proxy support is required.', $request); } } /** * @return array{0: mixed, 1: string} */ private static function resolveProxy(RequestInterface $request, array $options): array { $proxyConf = null; $noProxyConf = ''; if (isset($options['proxy'])) { if (!\is_array($options['proxy'])) { $proxyConf = $options['proxy']; } else { $scheme = $request->getUri()->getScheme(); if (isset($options['proxy'][$scheme])) { if ( isset($options['proxy']['no']) && Utils::isUriInNoProxy($request->getUri(), $options['proxy']['no']) ) { $proxyConf = ''; $noProxyConf = '*'; } else { $proxyConf = $options['proxy'][$scheme]; } } } } if ($proxyConf === null) { $proxyConf = ProxyEnvironment::getProxyForScheme($request->getUri()->getScheme()); if ($proxyConf === null) { $proxyConf = ''; } elseif ( ($noProxy = ProxyEnvironment::getNoProxy()) !== null && Utils::isUriInNoProxy($request->getUri(), ProxyEnvironment::splitNoProxy($noProxy)) ) { $proxyConf = ''; $noProxyConf = '*'; } } return [$proxyConf, $noProxyConf]; } /** * @param array<int|string, mixed> $conf */ private static function rejectRequestLevelShareWithProxyAuth(RequestInterface $request, array $options, array $conf): void { if (!self::hasRequestLevelCurlShare($options)) { return; } $proxy = self::getEffectiveProxy($conf); if ($proxy === null) { return; } // An external share handle may pool SOCKS connections where no section // signature can reach them. On affected libcurl, even an anonymous // request could inherit authenticated state already in that pool. if (self::isSocksProxy($proxy, $conf)) { if (!CurlVersion::supportsSocksProxyCredentialAwareConnectionReuse()) { throw new \InvalidArgumentException('The request-level CURLOPT_SHARE cURL option cannot be combined with SOCKS proxy configuration on libcurl before 7.69.0; use Guzzle-managed "transport_sharing" or a custom handler/factory instead.'); } if (self::hasAuthenticatedSocksProxyState($proxy, $conf)) { throw new \InvalidArgumentException('The request-level CURLOPT_SHARE cURL option cannot be combined with authenticated SOCKS proxy configuration; use Guzzle-managed "transport_sharing" or a custom handler/factory instead.'); } } if ( !self::usesProxyTunnel($request, $conf) || !self::isHttpProxyForConnectionReuse($proxy, $conf) ) { return; } if (self::hasAuthenticatedHttpProxyState($proxy, $conf)) { throw new \InvalidArgumentException('The request-level CURLOPT_SHARE cURL option cannot be combined with authenticated HTTP/HTTPS proxy tunnel configuration; use Guzzle-managed "transport_sharing" or a custom handler/factory instead.'); } // From libcurl 7.57.0 the external share can also own a connection // cache seeded outside Guzzle with tunnel identity libcurl cannot // key, so anonymous tunnels are rejected there too. if (CurlVersion::supportsShareConnectionCaches()) { throw new \InvalidArgumentException('The request-level CURLOPT_SHARE cURL option cannot be combined with HTTP/HTTPS proxy tunnel configuration on libcurl 7.57.0 or newer; use Guzzle-managed "transport_sharing" or a custom handler/factory instead.'); } } private static function hasRequestLevelCurlShare(array $options): bool { return \defined('CURLOPT_SHARE') && isset($options['curl']) && \is_array($options['curl']) && \array_key_exists((int) \constant('CURLOPT_SHARE'), $options['curl']); } /** * @param array<int|string, mixed> $conf */ private static function hasAuthenticatedHttpProxyState(string $proxy, array $conf): bool { $proxyForParsing = \strpos($proxy, '://') === false ? 'http://'.$proxy : $proxy; $proxyParts = \parse_url($proxyForParsing); if ( \is_array($proxyParts) && (\array_key_exists('user', $proxyParts) || \array_key_exists('pass', $proxyParts)) ) { return true; } if (self::hasCurlProxyCredentials($conf)) { return true; } if (self::hasCurlProxyAuthorizationHeader($conf)) { return true; } $httpHeaders = $conf[\CURLOPT_HTTPHEADER] ?? []; if (\is_array($httpHeaders) && self::proxyAuthorizationHeaderValuesFromList($httpHeaders) !== []) { return true; } return self::hasCurlProxyTlsCredentials($conf); } /** * @param int|string $option */ private static function formatCurlOption($option): string { if (!\is_int($option)) { return \sprintf('"%s"', $option); } static $names = null; if (null === $names) { $names = []; foreach (\get_defined_constants(true)['curl'] ?? [] as $name => $value) { if (\is_int($value) && \strpos($name, 'CURLOPT_') === 0 && !isset($names[$value])) { $names[$value] = $name; } } } if (isset($names[$option])) { return \sprintf('%s (%d)', $names[$option], $option); } return (string) $option; } private static function triggerConflictingCurlOptionDeprecations(array $options): void { if (!isset($options['curl']) || !\is_array($options['curl']) || $options['curl'] === []) { return; } $conflictingOptions = self::conflictingCurlOptions(); $sinceOverrides = self::conflictingCurlOptionSinceOverrides(); foreach ($options['curl'] as $option => $_) { if (!\array_key_exists($option, $conflictingOptions)) { continue; } $name = self::formatCurlOption($option); $replacement = $conflictingOptions[$option]; $since = $sinceOverrides[$option] ?? '7.11'; if ($replacement !== null) { \trigger_deprecation( 'guzzlehttp/guzzle', $since, \sprintf( 'Passing %s in the "curl" request option is deprecated; guzzlehttp/guzzle 8.0 will reject this option because it conflicts with Guzzle-managed request handling. Use %s instead.', $name, $replacement ) ); continue; } \trigger_deprecation( 'guzzlehttp/guzzle', $since, \sprintf( 'Passing %s in the "curl" request option is deprecated; guzzlehttp/guzzle 8.0 will reject this option because it conflicts with Guzzle-managed cURL internals.', $name ) ); } } private static function triggerUnsupportedCurlOptionDeprecations(array $options): void { if (!isset($options['curl']) || !\is_array($options['curl']) || $options['curl'] === []) { return; } if ( \defined('CURLOPT_PROXYHEADER') && \array_key_exists((int) \constant('CURLOPT_PROXYHEADER'), $options['curl']) && !CurlVersion::supportsProxyHeaderSeparation() ) { \trigger_deprecation( 'guzzlehttp/guzzle', '7.15', \sprintf( 'Passing %s in the "curl" request option on a build without proxy header separation support is deprecated; guzzlehttp/guzzle 8.0 will reject this configuration because proxy headers require libcurl 7.37.0 or newer built with proxy header separation support.', self::formatCurlOption((int) \constant('CURLOPT_PROXYHEADER')) ) ); } $supportedOptions = self::supportedCurlOptions(); $conflictingOptions = self::conflictingCurlOptions(); foreach ($options['curl'] as $option => $_) { if ( !\is_int($option) || \array_key_exists($option, $supportedOptions) || \array_key_exists($option, $conflictingOptions) ) { continue; } \trigger_deprecation( 'guzzlehttp/guzzle', '7.12', \sprintf( 'Passing %s in the "curl" request option is deprecated; guzzlehttp/guzzle 8.0 will reject raw cURL options outside the built-in cURL handlers\' allow-list.', self::formatCurlOption($option) ) ); } } private static function triggerUnsupportedRequestOptionDeprecations(array $options): void { if (\array_key_exists('stream_context', $options)) { \trigger_deprecation('guzzlehttp/guzzle', '7.11', 'Passing the "stream_context" request option to a cURL handler is deprecated; guzzlehttp/guzzle 8.0 will reject this option because cURL handlers ignore PHP stream context options.'); } } /** * @return array<int, string|null> */ private static function conflictingCurlOptions(): array { static $options = null; if ($options !== null) { return $options; } $options = []; self::addConflictingCurlOption($options, 'CURLOPT_SHARE', 'the "transport_sharing" client option or cURL handler option'); self::addConflictingCurlOption($options, 'CURLOPT_URL', 'the request URI'); self::addConflictingCurlOption($options, 'CURLOPT_PORT', 'the request URI'); self::addConflictingCurlOption($options, 'CURLOPT_CUSTOMREQUEST', 'the request method'); self::addConflictingCurlOption($options, 'CURLOPT_HTTPGET', 'the request method'); self::addConflictingCurlOption($options, 'CURLOPT_POST', 'the request method and body'); self::addConflictingCurlOption($options, 'CURLOPT_PUT', 'the request method and body'); self::addConflictingCurlOption($options, 'CURLOPT_NOBODY', 'the request method'); self::addConflictingCurlOption($options, 'CURLOPT_UPLOAD', 'the request body'); self::addConflictingCurlOption($options, 'CURLOPT_POSTFIELDS', 'the request body'); self::addConflictingCurlOption($options, 'CURLOPT_READFUNCTION', 'the request body'); self::addConflictingCurlOption($options, 'CURLOPT_READDATA', 'the request body'); self::addConflictingCurlOption($options, 'CURLOPT_INFILE', 'the request body'); self::addConflictingCurlOption($options, 'CURLOPT_INFILESIZE', 'the request body'); self::addConflictingCurlOption($options, 'CURLOPT_INFILESIZE_LARGE', 'the request body'); self::addConflictingCurlOption($options, 'CURLOPT_HTTPHEADER', 'the request headers'); self::addConflictingCurlOption($options, 'CURLOPT_USERAGENT', 'the request headers'); self::addConflictingCurlOption($options, 'CURLOPT_REFERER', 'the request headers'); self::addConflictingCurlOption($options, 'CURLOPT_HEADERFUNCTION', 'the "on_headers" request option'); self::addConflictingCurlOption($options, 'CURLOPT_WRITEFUNCTION', 'the "sink" request option'); self::addConflictingCurlOption($options, 'CURLOPT_FILE', 'the "sink" request option'); self::addConflictingCurlOption($options, 'CURLOPT_TIMEOUT', 'the "timeout" request option'); self::addConflictingCurlOption($options, 'CURLOPT_TIMEOUT_MS', 'the "timeout" request option'); self::addConflictingCurlOption($options, 'CURLOPT_CONNECTTIMEOUT', 'the "connect_timeout" request option'); self::addConflictingCurlOption($options, 'CURLOPT_CONNECTTIMEOUT_MS', 'the "connect_timeout" request option'); self::addConflictingCurlOption($options, 'CURLOPT_NOSIGNAL', 'the "timeout" or "connect_timeout" request option'); self::addConflictingCurlOption($options, 'CURLOPT_NOPROGRESS', 'the "progress" request option'); self::addConflictingCurlOption($options, 'CURLOPT_PROGRESSFUNCTION', 'the "progress" request option'); self::addConflictingCurlOption($options, 'CURLOPT_XFERINFOFUNCTION', 'the "progress" request option'); self::addConflictingCurlOption($options, 'CURLOPT_VERBOSE', 'the "debug" request option'); self::addConflictingCurlOption($options, 'CURLOPT_STDERR', 'the "debug" request option'); self::addConflictingCurlOption($options, 'CURLOPT_PROXY', 'the "proxy" request option'); self::addConflictingCurlOption($options, 'CURLOPT_NOPROXY', 'the "proxy" request option'); self::addConflictingCurlOption($options, 'CURLOPT_PROXYTYPE', 'the "proxy" request option with a scheme-prefixed URL'); self::addConflictingCurlOption($options, 'CURLOPT_FOLLOWLOCATION', 'the "allow_redirects" request option'); self::addConflictingCurlOption($options, 'CURLOPT_MAXREDIRS', 'the "allow_redirects" request option'); self::addConflictingCurlOption($options, 'CURLOPT_POSTREDIR', 'the "allow_redirects" request option'); self::addConflictingCurlOption($options, 'CURLOPT_REDIR_PROTOCOLS', 'the "allow_redirects" request option'); self::addConflictingCurlOption($options, 'CURLOPT_REDIR_PROTOCOLS_STR', 'the "allow_redirects" request option'); self::addConflictingCurlOption($options, 'CURLOPT_PROTOCOLS', 'the "protocols" request option'); self::addConflictingCurlOption($options, 'CURLOPT_PROTOCOLS_STR', 'the "protocols" request option'); self::addConflictingCurlOption($options, 'CURLOPT_HTTP_VERSION', 'the request protocol version'); self::addConflictingCurlOption($options, 'CURLOPT_PIPEWAIT', 'the "multiplex" request option'); self::addConflictingCurlOption($options, 'CURLOPT_IPRESOLVE', 'the "force_ip_resolve" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSL_VERIFYPEER', 'the "verify" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSL_VERIFYHOST', 'the "verify" request option'); self::addConflictingCurlOption($options, 'CURLOPT_CAINFO', 'the "verify" request option'); self::addConflictingCurlOption($options, 'CURLOPT_CAPATH', 'the "verify" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSLVERSION', 'the "crypto_method" or "crypto_method_max" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSLCERT', 'the "cert" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSLCERTPASSWD', 'the "cert" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSLCERTTYPE', 'the "cert_type" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSLKEY', 'the "ssl_key" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSLKEYPASSWD', 'the "ssl_key" request option'); self::addConflictingCurlOption($options, 'CURLOPT_KEYPASSWD', 'the "ssl_key" request option'); self::addConflictingCurlOption($options, 'CURLOPT_SSLKEYTYPE', 'the "ssl_key_type" request option'); self::addConflictingCurlOption($options, 'CURLOPT_COOKIE', 'the "Cookie" request header or Guzzle cookie middleware'); self::addConflictingCurlOption($options, 'CURLOPT_COOKIEFILE', 'Guzzle cookie middleware'); self::addConflictingCurlOption($options, 'CURLOPT_COOKIEJAR', 'Guzzle cookie middleware'); self::addConflictingCurlOption($options, 'CURLOPT_COOKIELIST', 'Guzzle cookie middleware'); self::addConflictingCurlOption($options, 'CURLOPT_COOKIESESSION', 'Guzzle cookie middleware'); return $options; } /** * @return array<int, string> */ private static function conflictingCurlOptionSinceOverrides(): array { static $options = null; if ($options !== null) { return $options; } $options = []; if (\defined('CURLOPT_PROXYTYPE')) { $options[\CURLOPT_PROXYTYPE] = '7.12'; } if (\defined('CURLOPT_PIPEWAIT')) { $options[\CURLOPT_PIPEWAIT] = '7.14'; } return $options; } /** * @return array<int, true> */ private static function supportedCurlOptions(): array { static $options = null; if ($options !== null) { return $options; } $options = []; self::addSupportedCurlOption($options, 'CURLOPT_ADDRESS_SCOPE'); self::addSupportedCurlOption($options, 'CURLOPT_CERTINFO'); self::addSupportedCurlOption($options, 'CURLOPT_CONNECT_TO'); self::addSupportedCurlOption($options, 'CURLOPT_DNS_CACHE_TIMEOUT'); self::addSupportedCurlOption($options, 'CURLOPT_DNS_INTERFACE'); self::addSupportedCurlOption($options, 'CURLOPT_DNS_LOCAL_IP4'); self::addSupportedCurlOption($options, 'CURLOPT_DNS_LOCAL_IP6'); self::addSupportedCurlOption($options, 'CURLOPT_DNS_SERVERS'); self::addSupportedCurlOption($options, 'CURLOPT_DNS_SHUFFLE_ADDRESSES'); self::addSupportedCurlOption($options, 'CURLOPT_ENCODING'); self::addSupportedCurlOption($options, 'CURLOPT_FORBID_REUSE'); self::addSupportedCurlOption($options, 'CURLOPT_FRESH_CONNECT'); self::addSupportedCurlOption($options, 'CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS'); self::addSupportedCurlOption($options, 'CURLOPT_HTTPAUTH'); self::addSupportedCurlOption($options, 'CURLOPT_INTERFACE'); self::addSupportedCurlOption($options, 'CURLOPT_LOCALPORT'); self::addSupportedCurlOption($options, 'CURLOPT_LOCALPORTRANGE'); self::addSupportedCurlOption($options, 'CURLOPT_LOW_SPEED_LIMIT'); self::addSupportedCurlOption($options, 'CURLOPT_LOW_SPEED_TIME'); self::addSupportedCurlOption($options, 'CURLOPT_MAXAGE_CONN'); self::addSupportedCurlOption($options, 'CURLOPT_MAXCONNECTS'); self::addSupportedCurlOption($options, 'CURLOPT_MAXLIFETIME_CONN'); self::addSupportedCurlOption($options, 'CURLOPT_HTTPPROXYTUNNEL'); self::addSupportedCurlOption($options, 'CURLOPT_PREREQFUNCTION'); self::addSupportedCurlOption($options, 'CURLOPT_PROXYHEADER'); self::addSupportedCurlOption($options, 'CURLOPT_PROXYUSERPWD'); self::addSupportedCurlOption($options, 'CURLOPT_RESOLVE'); self::addSupportedCurlOption($options, 'CURLOPT_SSL_CIPHER_LIST'); self::addSupportedCurlOption($options, 'CURLOPT_SSL_EC_CURVES'); self::addSupportedCurlOption($options, 'CURLOPT_TCP_FASTOPEN'); self::addSupportedCurlOption($options, 'CURLOPT_TCP_KEEPALIVE'); self::addSupportedCurlOption($options, 'CURLOPT_TCP_KEEPIDLE'); self::addSupportedCurlOption($options, 'CURLOPT_TCP_KEEPINTVL'); self::addSupportedCurlOption($options, 'CURLOPT_TCP_KEEPCNT'); self::addSupportedCurlOption($options, 'CURLOPT_TCP_NODELAY'); self::addSupportedCurlOption($options, 'CURLOPT_TLS13_CIPHERS'); self::addSupportedCurlOption($options, 'CURLOPT_UNIX_SOCKET_PATH'); self::addSupportedCurlOption($options, 'CURLOPT_USERPWD'); return $options; } /** * @param array<int, true> $options */ private static function addSupportedCurlOption(array &$options, string $constant): void { if (!\defined($constant)) { return; } $value = \constant($constant); if (\is_int($value)) { $options[$value] = true; } } /** * @param array<int, string|null> $options */ private static function addConflictingCurlOption(array &$options, string $constant, ?string $replacement): void { if (!\defined($constant)) { return; } $value = \constant($constant); if (\is_int($value)) { $options[$value] = $replacement; } } public function release(EasyHandle $easy): void { $resource = $easy->handle; unset($easy->handle); if ( \count($this->handles) >= $this->maxHandles || ($easy->proxyTunnelSignature !== null && $easy->proxyTunnelSignature !== $this->proxyTunnelOwner) ) { // Pool is full, or this handle belongs to a superseded tunnel // owner (an async create/release overlap can hand a stale-owner // handle back after a purge) - drop it instead of pooling it. if (PHP_VERSION_ID < 80000) { \curl_close($resource); } return; } if ($easy->proxyTunnelSignature !== null) { // A pooled handle now carries the current owner's tunnel. $this->poolMayHoldTunnels = true; } // Remove all callback functions as they can hold onto references and // are not cleaned up by curl_reset. Using curl_setopt_array does not // work for some reason, so removing each one individually. \curl_setopt($resource, \CURLOPT_HEADERFUNCTION, null); \curl_setopt($resource, \CURLOPT_READFUNCTION, null); \curl_setopt($resource, \CURLOPT_WRITEFUNCTION, null); \curl_setopt($resource, \CURLOPT_PROGRESSFUNCTION, null); if (\defined('CURLOPT_PREREQFUNCTION')) { \curl_setopt($resource, (int) \constant('CURLOPT_PREREQFUNCTION'), null); } \curl_reset($resource); $this->handles[] = $resource; } /** * Completes a cURL transaction, either returning a response promise or a * rejected promise. * * @param callable(RequestInterface, array): PromiseInterface $handler * @param CurlFactoryInterface $factory Dictates how the handle is released */ public static function finish(callable $handler, EasyHandle $easy, CurlFactoryInterface $factory): PromiseInterface { if (isset($easy->options['on_stats'])) { try { self::invokeStats($easy); } catch (\Throwable $e) { try { $factory->release($easy); } catch (\Throwable $releaseFailure) { // Keep the on_stats throwable as the visible failure. } throw $e; } } if (!$easy->response || $easy->errno) { return self::finishError($handler, $easy, $factory); } // Return the response if it is present and there is no error. $factory->release($easy); // Rewind the body of the response if possible. $body = $easy->response->getBody(); if ($body->isSeekable()) { $body->rewind(); } if (isset($easy->options['on_trailers'])) { try { ($easy->options['on_trailers'])(self::headersFromTrailerLines($easy->trailers), $easy->response); } catch (\Throwable $e) { return P\Create::rejectionFor( new RequestException( 'An error was encountered during the on_trailers event', $easy->request, $easy->response, $e ) ); } } return new FulfilledPromise($easy->response); } private static function invokeStats(EasyHandle $easy): void { $curlStats = \curl_getinfo($easy->handle); $curlStats['appconnect_time'] = \curl_getinfo($easy->handle, \CURLINFO_APPCONNECT_TIME); $stats = new TransferStats( $easy->request, $easy->response, $curlStats['total_time'], $easy->errno, $curlStats ); ($easy->options['on_stats'])($stats); } /** * @param callable(RequestInterface, array): PromiseInterface $handler */ private static function finishError(callable $handler, EasyHandle $easy, CurlFactoryInterface $factory): PromiseInterface { // Get error information and release the handle to the factory. $ctx = [ 'errno' => $easy->errno, 'error' => \curl_error($easy->handle), 'appconnect_time' => \curl_getinfo($easy->handle, \CURLINFO_APPCONNECT_TIME), ] + \curl_getinfo($easy->handle); $ctx[self::CURL_VERSION_STR] = CurlVersion::getVersion() ?? ''; $factory->release($easy); // Retry when nothing is present or when curl failed to rewind. if (empty($easy->options['_err_message']) && (!$easy->errno || $easy->errno == 65)) { return self::retryFailedRewind($handler, $easy, $ctx); } return self::createRejection($easy, $ctx); } private static function createRejection(EasyHandle $easy, array $ctx): PromiseInterface { static $connectionErrors = [ \CURLE_OPERATION_TIMEOUTED => true, \CURLE_COULDNT_RESOLVE_HOST => true, \CURLE_COULDNT_CONNECT => true, \CURLE_SSL_CONNECT_ERROR => true, \CURLE_GOT_NOTHING => true, ]; $uri = $easy->request->getUri(); // Redact the native error before it reaches any exception so the // handler context matches the sanitized exception message. $ctx['error'] = self::sanitizeCurlError((string) ($ctx['error'] ?? ''), $uri, $easy->effectiveProxy); if ($easy->createResponseException) { return P\Create::rejectionFor( new RequestException( 'An error was encountered while creating the response', $easy->request, null, $easy->createResponseException, $ctx ) ); } // If an exception was encountered during the onHeaders event, then // return a rejected promise that wraps that exception. if ($easy->onHeadersException) { return P\Create::rejectionFor( new RequestException( 'An error was encountered during the on_headers event', $easy->request, $easy->response, $easy->onHeadersException, $ctx ) ); } $sanitizedError = $ctx['error']; $message = \sprintf( 'cURL error %s: %s (%s)', $ctx['errno'], $sanitizedError, 'see https://curl.se/libcurl/c/libcurl-errors.html' ); if ('' !== $sanitizedError) { $redactedUriString = Psr7\Utils::redactUserInfo($uri)->__toString(); if ($redactedUriString !== '' && false === \strpos($sanitizedError, $redactedUriString)) { $message .= \sprintf(' for %s', $redactedUriString); } } // Create a connection exception if it was a specific error code. $error = isset($connectionErrors[$easy->errno]) ? new ConnectException($message, $easy->request, null, $ctx) : new RequestException($message, $easy->request, $easy->response, null, $ctx); return P\Create::rejectionFor($error); } private static function sanitizeCurlError(string $error, UriInterface $uri, ?string $proxy = null): string { if ('' === $error) { return $error; } $error = self::redactProxyUserInfo($error, $proxy); $baseUri = $uri->withQuery('')->withFragment(''); $baseUriString = $baseUri->__toString(); if ('' === $baseUriString) { return $error; } $redactedUriString = Psr7\Utils::redactUserInfo($baseUri)->__toString(); return str_replace($baseUriString, $redactedUriString, $error); } private static function redactProxyUserInfo(string $error, ?string $proxy): string { if ($proxy === null || $proxy === '' || \strpos($proxy, '@') === false) { return $error; } // The error message embeds the proxy string exactly as configured, so // the userinfo needle is taken verbatim from the raw string: // parse_url() and Psr7\Uri normalize the components, e.g. by rewriting // raw control bytes to '_', which could make the replacement miss. $proxyForParsing = \strpos($proxy, '://') === false ? 'http://'.$proxy : $proxy; $remainder = \substr($proxyForParsing, \strpos($proxyForParsing, '://') + 3); if (\parse_url($proxyForParsing) === false) { // Raw '/', '?', or '#' separators may sit inside the credentials // of a proxy that defeats parse_url(), so the redaction cannot // stop at the apparent authority. $atPosition = \strrpos($remainder, '@'); if ($atPosition === false || $atPosition === 0) { return $error; } return \str_replace(\substr($remainder, 0, $atPosition).'@', '***@', $error); } $authority = \substr($remainder, 0, \strcspn($remainder, '/?#')); $atPosition = \strrpos($authority, '@'); if ($atPosition === false || $atPosition === 0) { // A parseable proxy URL with '@' only past its authority, or with // an empty userinfo, carries no credentials to redact. return $error; } $rawUserInfo = \substr($authority, 0, $atPosition); // Redact with the same policy Psr7\Utils::redactUserInfo() applies to // request URIs, so the bundled psr7 version governs the redacted form. $redactedUserInfo = '***'; try { $proxyUri = new Uri($proxyForParsing); $redactedUserInfo = Psr7\Utils::redactUserInfo($proxyUri)->getUserInfo(); if ($redactedUserInfo === $proxyUri->getUserInfo()) { return $error; } } catch (\InvalidArgumentException $e) { // Unparseable as a URI: fall back to redacting the whole userinfo. } return \str_replace($rawUserInfo.'@', $redactedUserInfo.'@', $error); } /** * @param array<int|string, mixed> $conf */ private static function forceFreshConnectionForAuthenticatedProxy(RequestInterface $request, array &$conf): void { $proxy = self::getEffectiveProxy($conf); if ($proxy === null || !self::requiresFreshConnectionForAuthenticatedProxy($request, $proxy, $conf)) { return; } $conf[\CURLOPT_FRESH_CONNECT] = true; $conf[\CURLOPT_FORBID_REUSE] = true; } /** * @param array<int|string, mixed> $conf */ private function isolateOpaqueShareAnonymousProxyTunnel(RequestInterface $request, array &$conf): void { if (!$this->opaqueShareConnectionCache || !CurlVersion::supportsShareConnectionCaches()) { return; } $proxy = self::getEffectiveProxy($conf); if ( $proxy === null || !self::usesProxyTunnel($request, $conf) || !self::isHttpProxyForConnectionReuse($proxy, $conf) || self::hasAuthenticatedHttpProxyState($proxy, $conf) ) { return; } // From libcurl 7.57.0 an opaque share handle can own a connection // cache, and a tunnel seeded there with a literal Proxy-Authorization // header is never keyed on credentials, so an anonymous request could // inherit it on every later libcurl version. Requests carrying // recognized credential state keep the version-gated channel // safeguards above. $conf[\CURLOPT_FRESH_CONNECT] = true; $conf[\CURLOPT_FORBID_REUSE] = true; } /** * @param array<int|string, mixed> $conf */ private static function assertFinalProxyOptionTypes(array $conf, bool $requiredCleartextMultiplex): void { if (\array_key_exists(\CURLOPT_PROXYTYPE, $conf) && !\is_int($conf[\CURLOPT_PROXYTYPE])) { throw new \InvalidArgumentException('CURLOPT_PROXYTYPE must be an integer.'); } foreach (['CURLOPT_PROXY', 'CURLOPT_NOPROXY', 'CURLOPT_PRE_PROXY'] as $name) { if (!\defined($name)) { continue; } $option = (int) \constant($name); if (\array_key_exists($option, $conf) && !\is_string($conf[$option])) { if ($requiredCleartextMultiplex) { throw new \InvalidArgumentException(\sprintf('The "multiplex" request option cannot be required when the final %s cURL option value is not a string.', $name)); } throw new \InvalidArgumentException($name.' must be a string.'); } } } /** * @param array<int|string, mixed> $conf */ private static function isolatePreProxyOnAffectedCurl(array &$conf): void { if (CurlVersion::supportsSocksProxyCredentialAwareConnectionReuse() || !\defined('CURLOPT_PRE_PROXY')) { return; } $option = (int) \constant('CURLOPT_PRE_PROXY'); if (!\array_key_exists($option, $conf) || $conf[$option] === '') { return; } $conf[\CURLOPT_FRESH_CONNECT] = true; $conf[\CURLOPT_FORBID_REUSE] = true; } /** * @param array<int|string, mixed> $conf */ private static function getEffectiveProxy(array $conf): ?string { if (!\array_key_exists(\CURLOPT_PROXY, $conf)) { return null; } $proxy = $conf[\CURLOPT_PROXY]; if (!\is_string($proxy) || $proxy === '') { return null; } // Only the exact raw wildcard is modeled here: libcurl treats '*' as // bypass-all by whole-string comparison, without trimming or host matching. if (\defined('CURLOPT_NOPROXY')) { $noProxy = $conf[(int) \constant('CURLOPT_NOPROXY')] ?? null; if (\is_string($noProxy) && $noProxy === '*') { return null; } } return $proxy; } /** * @param array<int|string, mixed> $conf */ private static function normalizeCurlHeaderOptions(array &$conf): void { $options = [\CURLOPT_HTTPHEADER => 'CURLOPT_HTTPHEADER']; if (\defined('CURLOPT_PROXYHEADER')) { $options[(int) \constant('CURLOPT_PROXYHEADER')] = 'CURLOPT_PROXYHEADER'; } foreach ($options as $option => $label) { if (!\array_key_exists($option, $conf) || !\is_array($conf[$option])) { continue; } $normalized = []; foreach ($conf[$option] as $key => $entry) { if (\is_object($entry) && \method_exists($entry, '__toString')) { $entry = (string) $entry; } elseif (\is_float($entry) && !\is_finite($entry)) { $entry = \is_nan($entry) ? 'NAN' : ($entry > 0 ? 'INF' : '-INF'); } elseif (\is_scalar($entry)) { $entry = (string) $entry; } else { throw new \InvalidArgumentException(\sprintf('%s entries must be strings, stringable objects, or scalar values.', $label)); } if (\strpbrk($entry, "\r\n") !== false) { throw new \InvalidArgumentException(\sprintf('%s entries must not contain a carriage return or line feed.', $label)); } $normalized[$key] = $entry; } $conf[$option] = $normalized; } } private static function proxyScheme(string $proxy): ?string { $position = \strpos($proxy, '://'); return $position === false ? null : Psr7\Utils::asciiToLower(\substr($proxy, 0, $position)); } /** * @param array<int|string, mixed> $conf */ private static function requiresFreshConnectionForAuthenticatedProxy(RequestInterface $request, string $proxy, array $conf): bool { // SOCKS authentication binds an identity to the connection itself, and // below 7.69.0 an opaque configured share may already contain a SOCKS // connection whose credential state Guzzle cannot inspect. Isolate // authenticated and anonymous requests so neither can inherit it. if (self::isSocksProxy($proxy, $conf)) { return !CurlVersion::supportsSocksProxyCredentialAwareConnectionReuse(); } if (!self::usesProxyTunnel($request, $conf) || !self::isHttpProxyForConnectionReuse($proxy, $conf)) { return false; } $proxyForParsing = \strpos($proxy, '://') === false ? 'http://'.$proxy : $proxy; $proxyParts = \parse_url($proxyForParsing); if (!\is_array($proxyParts)) { return false; } if (self::hasCurlProxyAuthorizationHeader($conf)) { return true; } // A proxy client certificate or TLS-SRP authenticates the client to the // HTTPS proxy at the TLS layer; libcurl ignored TLS-SRP before 7.83.1 // (CVE-2022-27782), so an old build can reuse a tunnel across those // identities. Force a fresh one, as the non-share signature path does. if ( !CurlVersion::supportsProxyTlsCredentialAwareConnectionReuse() && self::hasCurlProxyTlsCredentials($conf) ) { return true; } if (CurlVersion::supportsProxyCredentialAwareConnectionReuse()) { return false; } return \array_key_exists('user', $proxyParts) || \array_key_exists('pass', $proxyParts) || self::hasCurlProxyCredentials($conf); } /** * @param array<int|string, mixed> $conf */ private static function hasAuthenticatedSocksProxyState(string $proxy, array $conf): bool { $proxyForParsing = \strpos($proxy, '://') === false ? 'http://'.$proxy : $proxy; $proxyParts = \parse_url($proxyForParsing); if ( \is_array($proxyParts) && (\array_key_exists('user', $proxyParts) || \array_key_exists('pass', $proxyParts)) ) { return true; } return self::hasCurlProxyCredentials($conf); } /** * @param array<int|string, mixed> $conf */ private static function usesProxyTunnel(RequestInterface $request, array $conf): bool { $scheme = $request->getUri()->getScheme(); if ('https' === $scheme) { return true; } // An HTTP proxy auto-switches to a CONNECT tunnel when CONNECT_TO // redirects the origin, so an http:// target with it set tunnels too. if ('http' === $scheme && self::hasCurlConnectTo($conf)) { return true; } return \defined('CURLOPT_HTTPPROXYTUNNEL') && \array_key_exists((int) \constant('CURLOPT_HTTPPROXYTUNNEL'), $conf) && (bool) $conf[(int) \constant('CURLOPT_HTTPPROXYTUNNEL')]; } /** * @param array<int|string, mixed> $conf */ private static function hasCurlConnectTo(array $conf): bool { if (!\defined('CURLOPT_CONNECT_TO')) { return false; } $option = (int) \constant('CURLOPT_CONNECT_TO'); if (!\array_key_exists($option, $conf)) { return false; } $value = $conf[$option]; return \is_array($value) ? $value !== [] : $value !== null && $value !== false && $value !== ''; } /** * @param array<int|string, mixed> $conf */ private static function isHttpProxyForConnectionReuse(string $proxy, array $conf): bool { if (\strpos($proxy, '://') !== false) { $proxyParts = \parse_url($proxy); if (!\is_array($proxyParts) || !isset($proxyParts['scheme'])) { return false; } $proxyScheme = Psr7\Utils::asciiToLower($proxyParts['scheme']); return $proxyScheme === 'http' || $proxyScheme === 'https'; } return !self::isSocksProxyType($conf[\CURLOPT_PROXYTYPE] ?? null); } /** * @param array<int|string, mixed> $conf */ private static function isSocksProxy(string $proxy, array $conf): bool { $scheme = self::proxyScheme($proxy); if ($scheme !== null) { if (\in_array($scheme, ['socks', 'socks4', 'socks4a', 'socks5', 'socks5h'], true)) { return true; } // libcurl preserves a raw SOCKS CURLOPT_PROXYTYPE behind an http // scheme, while every other scheme overrides the proxy type. if ($scheme !== 'http') { return false; } } return self::isSocksProxyType($conf[\CURLOPT_PROXYTYPE] ?? null); } /** * Computes the connection-reuse section signature for a SOCKS proxy. * libcurl compares SOCKS credentials on connection reuse from 7.69.0 (curl * #4835), so no sectioning is needed there. Older libcurl matches a SOCKS * proxy by type, host, and port only, so every SOCKS request is sectioned * by its credential state; hashing the credential-less state too keeps an * unauthenticated request from inheriting an authenticated connection. * * @param array<int|string, mixed> $conf */ private static function socksProxySignature(string $proxy, array $conf): ?string { if (CurlVersion::supportsSocksProxyCredentialAwareConnectionReuse()) { return null; } $credentialState = []; foreach (['CURLOPT_PROXYUSERPWD', 'CURLOPT_PROXYUSERNAME', 'CURLOPT_PROXYPASSWORD', 'CURLOPT_PROXYTYPE'] as $name) { $credentialState[$name] = \defined($name) ? ($conf[(int) \constant($name)] ?? null) : null; } return \hash('sha256', \serialize(['socks', $proxy, $credentialState])); } /** * @param mixed $proxyType */ private static function isSocksProxyType($proxyType): bool { if (!\is_int($proxyType)) { return false; } foreach ([ 'CURLPROXY_SOCKS4' => 4, 'CURLPROXY_SOCKS5' => 5, 'CURLPROXY_SOCKS4A' => 6, 'CURLPROXY_SOCKS5_HOSTNAME' => 7, ] as $name => $fallback) { $value = \defined($name) ? (int) \constant($name) : $fallback; if ($proxyType === $value) { return true; } } return false; } /** * @param array<int|string, mixed> $conf */ private static function hasCurlProxyCredentials(array $conf): bool { foreach (['CURLOPT_PROXYUSERPWD', 'CURLOPT_PROXYUSERNAME', 'CURLOPT_PROXYPASSWORD'] as $option) { if (\defined($option) && \array_key_exists((int) \constant($option), $conf)) { return true; } } return false; } /** * @param array<int|string, mixed> $conf */ private static function hasCurlProxyTlsCredentials(array $conf): bool { foreach ([ 'CURLOPT_PROXY_SSLCERT', 'CURLOPT_PROXY_SSLCERT_BLOB', 'CURLOPT_PROXY_TLSAUTH_USERNAME', 'CURLOPT_PROXY_TLSAUTH_PASSWORD', ] as $option) { if (\defined($option) && \array_key_exists((int) \constant($option), $conf)) { return true; } } return false; } /** * @param array<int|string, mixed> $conf */ private static function hasCurlProxyAuthorizationHeader(array $conf): bool { return self::curlProxyAuthorizationHeaderValues($conf) !== []; } /** * @param array<int|string, mixed> $conf */ private static function applyProxyAuthorizationHeaderHandling(RequestInterface $request, array &$conf): void { $proxy = self::getEffectiveProxy($conf); if ($proxy === null || !self::isHttpProxyForConnectionReuse($proxy, $conf)) { return; } $httpHeaders = $conf[\CURLOPT_HTTPHEADER] ?? null; $movedHeaders = []; $originHeaders = []; if (\is_array($httpHeaders)) { foreach ($httpHeaders as $header) { if (\is_string($header) && self::isProxyAuthorizationHeaderLine($header)) { $movedHeaders[] = $header; continue; } $originHeaders[] = $header; } } if (CurlVersion::supportsProxyHeaderSeparation()) { if ($movedHeaders !== []) { $conf[\CURLOPT_HTTPHEADER] = $originHeaders; self::appendCurlProxyHeaders($conf, $movedHeaders); } // On libcurl 7.37.0-7.42.0 the default is CURLHEADER_UNIFIED. if ($movedHeaders !== [] || self::hasCurlProxyHeaderOption($conf) || self::usesProxyTunnel($request, $conf)) { $conf[(int) \constant('CURLOPT_HEADEROPT')] = (int) \constant('CURLHEADER_SEPARATE'); } return; } if (\is_array($httpHeaders) && self::proxyAuthorizationHeaderValuesFromList($httpHeaders) !== []) { $conf[\CURLOPT_FRESH_CONNECT] = true; $conf[\CURLOPT_FORBID_REUSE] = true; } } /** * Routes the managed first-class Proxy-Authorization values to libcurl's * proxy-only header channel, independently of Guzzle's proxy prediction: * libcurl alone decides whether the proxy-only list is used for the * actual transfer, so the credential can never reach an origin through * CURLOPT_HTTPHEADER. Without proxy header separation support, values are * safely omitted on known direct, bypassed, and SOCKS routes; a route that * may use an HTTP(S) proxy is rejected before cURL initialization and * network I/O. A deprecated raw CURLOPT_HTTPHEADER replacement suppresses * every generated header, the managed values included. * * @param array<int|string, mixed> $conf * @param list<string> $headers */ private static function applyManagedProxyAuthorization(RequestInterface $request, array &$conf, array $headers, bool $rawHttpHeadersReplaceManaged): void { if ($rawHttpHeadersReplaceManaged || $headers === []) { return; } if (!CurlVersion::supportsProxyHeaderSeparation()) { $proxy = self::getEffectiveProxy($conf); if ($proxy !== null && !self::isSocksProxy($proxy, $conf)) { throw new RequestException('Proxy-Authorization request headers through a possible HTTP or HTTPS proxy require libcurl 7.37.0 or newer built with proxy header separation support.', $request); } return; } self::appendCurlProxyHeaders($conf, $headers); $conf[(int) \constant('CURLOPT_HEADEROPT')] = (int) \constant('CURLHEADER_SEPARATE'); } /** * @return list<string> */ private static function managedProxyAuthorizationHeaderLines(RequestInterface $request): array { $headers = []; foreach ($request->getHeader('Proxy-Authorization') as $value) { $headers[] = $value === '' ? 'Proxy-Authorization;' : 'Proxy-Authorization: '.$value; } return $headers; } /** * @param array<int|string, mixed> $conf * @param list<string> $headers */ private static function appendCurlProxyHeaders(array &$conf, array $headers): void { $option = (int) \constant('CURLOPT_PROXYHEADER'); if (\array_key_exists($option, $conf)) { if (!\is_array($conf[$option])) { throw new \InvalidArgumentException('CURLOPT_PROXYHEADER must be an array when a Proxy-Authorization request header is routed to the proxy header channel.'); } $headers = \array_merge($conf[$option], $headers); } $conf[$option] = $headers; } /** * @param array<int|string, mixed> $conf */ private static function hasCurlProxyHeaderOption(array $conf): bool { return \defined('CURLOPT_PROXYHEADER') && \array_key_exists((int) \constant('CURLOPT_PROXYHEADER'), $conf); } private static function isProxyAuthorizationHeaderLine(string $header): bool { $length = \strcspn($header, ':;'); if ($length === \strlen($header)) { return false; } return Psr7\Utils::caselessEquals(\trim(\substr($header, 0, $length), " \n\r\t\0\x0B"), 'Proxy-Authorization'); } private static function proxyAuthorizationHeaderValue(string $header): ?string { $position = \strpos($header, ':'); if ($position === false) { return null; } if (!Psr7\Utils::caselessEquals(\trim(\substr($header, 0, $position), " \n\r\t\0\x0B"), 'Proxy-Authorization')) { return null; } $value = \trim(\substr($header, $position + 1), " \n\r\t\0\x0B"); return $value === '' ? null : $value; } /** * @param mixed[] $headers * * @return list<string> */ private static function proxyAuthorizationHeaderValuesFromList(array $headers): array { $values = []; foreach ($headers as $header) { if (!\is_string($header)) { continue; } $value = self::proxyAuthorizationHeaderValue($header); if ($value !== null) { $values[] = $value; } } return $values; } /** * Computes the connection-reuse section signature for a proxy tunnel or * SOCKS proxy, or null when the request does not require sectioning. * * @param array<int|string, mixed> $conf */ private static function proxyTunnelSignature(RequestInterface $request, array $conf): ?string { $proxy = self::getEffectiveProxy($conf); if ($proxy === null) { return null; } // SOCKS authentication binds an identity to the connection itself, for // plain http:// requests as much as https://, so it sections ahead of // the CONNECT tunnel domain checks. if (self::isSocksProxy($proxy, $conf)) { return self::socksProxySignature($proxy, $conf); } if ( !self::usesProxyTunnel($request, $conf) || !self::isHttpProxyForConnectionReuse($proxy, $conf) ) { return null; } $headerAuth = self::curlProxyAuthorizationHeaderValues($conf); if ($headerAuth === [] && CurlVersion::supportsProxyCredentialAwareConnectionReuse()) { // libcurl keys reuse on parsed proxy credentials only from 8.19.0, // trusted from 8.20.0 (PROXY_CREDENTIAL_REUSE_VERSION); a literal // Proxy-Authorization header is never keyed and always sections. return self::DELEGATED_PROXY_TUNNEL_OWNER; } // Hash every proxy channel an old libcurl might not key reuse on. A // changed signature only forces a fresh connection, never relaxes // reuse, so over-covering is always safe; under-covering leaks. Proxy // credentials are the channel CVE-2026-3784 missed; the proxy-TLS // options are load-bearing on builds before the proxy-TLS reuse fixes // (the proxy client cert is keyed from 7.52.0, libcurl's first // HTTPS-proxy release; CVE-2016-5420 (7.50.1) is only the origin-cert // precedent; TLS-SRP from 7.83.1, CVE-2022-27782) and harmless after. // The private-key file and passphrase are hashed on this non-delegated // path too, as fallback hardening: libcurl's mTLS private-key matching // on reuse was incomplete before 8.21.0 (CVE-2026-8932). This does not // cover the delegated path (the early return above) or configured share // handles, so it is not a complete pre-8.21.0 mitigation. The key blob // and cert/key type encodings (PROXY_SSLKEY_BLOB, PROXY_SSLKEYTYPE, // PROXY_SSLCERTTYPE) are not hashed and are an accepted residual. $credentialState = []; foreach ([ 'CURLOPT_PROXYUSERPWD', 'CURLOPT_PROXYUSERNAME', 'CURLOPT_PROXYPASSWORD', 'CURLOPT_PROXYTYPE', 'CURLOPT_PROXY_SSLCERT', 'CURLOPT_PROXY_SSLCERT_BLOB', 'CURLOPT_PROXY_SSLKEY', 'CURLOPT_PROXY_KEYPASSWD', 'CURLOPT_PROXY_TLSAUTH_USERNAME', 'CURLOPT_PROXY_TLSAUTH_PASSWORD', 'CURLOPT_PROXY_SSLVERSION', ] as $name) { $credentialState[$name] = \defined($name) ? ($conf[(int) \constant($name)] ?? null) : null; } return \hash('sha256', \serialize([$proxy, $credentialState, $headerAuth])); } /** * @param array<int|string, mixed> $conf * * @return list<string> */ private static function curlProxyAuthorizationHeaderValues(array $conf): array { if (!\defined('CURLOPT_PROXYHEADER')) { return []; } $option = (int) \constant('CURLOPT_PROXYHEADER'); if (!\array_key_exists($option, $conf)) { return []; } $headers = $conf[$option]; if (!\is_array($headers)) { return []; } return self::proxyAuthorizationHeaderValuesFromList($headers); } private function discardIdleHandles(): void { foreach ($this->handles as $id => $handle) { if (PHP_VERSION_ID < 80000) { \curl_close($handle); } unset($this->handles[$id]); } } /** * @return array<int|string, mixed> */ private function getDefaultConf(EasyHandle $easy): array { $uri = $easy->request->getUri(); $protocols = Utils::normalizeProtocols($easy->options['protocols'] ?? ['http', 'https']); $scheme = $uri->getScheme(); if (!\in_array($scheme, $protocols, true)) { throw new RequestException(\sprintf('The scheme "%s" is not allowed by the protocols request option.', $scheme), $easy->request); } if ($uri->getHost() === '') { throw new RequestException('URI must include a scheme and host. Use an absolute URI, a network-path reference starting with //, or configure a base_uri.', $easy->request); } $conf = [ '_headers' => $easy->request->getHeaders(), \CURLOPT_CUSTOMREQUEST => $easy->request->getMethod(), \CURLOPT_URL => (string) $uri->withFragment(''), \CURLOPT_RETURNTRANSFER => false, \CURLOPT_HEADER => false, \CURLOPT_CONNECTTIMEOUT => 300, ]; if (\defined('CURLOPT_PROTOCOLS')) { $conf[\CURLOPT_PROTOCOLS] = self::curlProtocolMask($protocols); } $version = $easy->request->getProtocolVersion(); $multiplex = self::normalizeMultiplex($easy->options); if ('2' === $version || '2.0' === $version) { if (\in_array($multiplex, [Multiplexing::REQUIRE_EAGER, Multiplexing::REQUIRE_WAIT], true)) { self::assertRequiredMultiplexSupported($easy); // New HTTP/2 connections cannot negotiate HTTP/1.x here, and // the 8.14.0 floor's version-aware reuse matching keeps // reused connections on HTTP/2 as well. $conf[\CURLOPT_HTTP_VERSION] = (int) \constant('CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE'); } else { $conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_2_0; } if (\in_array($multiplex, [Multiplexing::WAIT, Multiplexing::REQUIRE_WAIT], true) && CurlVersion::supportsMultiplex()) { // Wait for a connection that is still being established to the // same origin to reveal whether it can be multiplexed instead // of immediately opening another connection. $conf[(int) \constant('CURLOPT_PIPEWAIT')] = true; } } elseif ('1.1' === $version) { if (\in_array($multiplex, [Multiplexing::REQUIRE_EAGER, Multiplexing::REQUIRE_WAIT], true)) { throw new ConnectException(\sprintf('The "multiplex" request option cannot be required for HTTP/%s requests; use protocol version 2.', $version), $easy->request); } $conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_1; } else { if (\in_array($multiplex, [Multiplexing::REQUIRE_EAGER, Multiplexing::REQUIRE_WAIT], true)) { throw new ConnectException(\sprintf('The "multiplex" request option cannot be required for HTTP/%s requests; use protocol version 2.', $version), $easy->request); } $conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_0; } return $conf; } /** * @param string[] $protocols */ private static function curlProtocolMask(array $protocols): int { $mask = 0; if (\in_array('http', $protocols, true)) { $mask |= \CURLPROTO_HTTP; } if (\in_array('https', $protocols, true)) { $mask |= \CURLPROTO_HTTPS; } return $mask; } /** * @param mixed $type */ private static function normalizeTlsFileType(string $option, $type): string { if (!\is_string($type) || $type === '') { throw new \InvalidArgumentException(\sprintf('%s must be a non-empty string', $option)); } return Psr7\Utils::asciiToUpper($type); } private static function shouldValidateSslKeyFile(?string $type): bool { return $type !== 'ENG' && $type !== 'PROV'; } private function applyMethod(EasyHandle $easy, array &$conf): void { if ($easy->request->getMethod() === 'HEAD') { // libcurl stops at HEAD response headers only when CURLOPT_NOBODY // is set; CURLOPT_CUSTOMREQUEST changes only the method string. // NOBODY also suppresses request upload, so strip non-zero body // length, transfer coding, and a 100-continue expectation. $conf[\CURLOPT_CUSTOMREQUEST] = null; $conf[\CURLOPT_NOBODY] = true; unset( $conf[\CURLOPT_WRITEFUNCTION], $conf[\CURLOPT_READFUNCTION], $conf[\CURLOPT_FILE], $conf[\CURLOPT_INFILE] ); if (\trim($easy->request->getHeaderLine('Content-Length'), " \n\r\t\0\x0B") !== '0') { $this->removeHeader('Content-Length', $conf); } $this->removeHeader('Transfer-Encoding', $conf); if (Psr7\Utils::caselessEquals(\trim($easy->request->getHeaderLine('Expect'), " \n\r\t\0\x0B"), '100-continue')) { $this->removeHeader('Expect', $conf); } return; } $body = $easy->request->getBody(); $size = $body->getSize(); if ($size === null || $size > 0) { $this->applyBody($easy->request, $easy->options, $conf); return; } $method = $easy->request->getMethod(); if ($method === 'PUT' || $method === 'POST') { // See https://datatracker.ietf.org/doc/html/rfc7230#section-3.3.2 if (!$easy->request->hasHeader('Content-Length')) { $conf[\CURLOPT_HTTPHEADER][] = 'Content-Length: 0'; } } } private function applyBody(RequestInterface $request, array $options, array &$conf): void { $size = $request->hasHeader('Content-Length') ? (int) $request->getHeaderLine('Content-Length') : null; // Send the body as a string if the size is less than 1MB OR if the // [curl][body_as_string] request value is set. if (($size !== null && $size < 1000000) || !empty($options['_body_as_string'])) { $conf[\CURLOPT_POSTFIELDS] = (string) $request->getBody(); // Don't duplicate the Content-Length header $this->removeHeader('Content-Length', $conf); $this->removeHeader('Transfer-Encoding', $conf); } else { $conf[\CURLOPT_UPLOAD] = true; if ($size !== null) { $conf[\CURLOPT_INFILESIZE] = $size; $this->removeHeader('Content-Length', $conf); } $body = $request->getBody(); if ($body->isSeekable()) { $body->rewind(); } $remaining = $size; $conf[\CURLOPT_READFUNCTION] = static function ($ch, $fd, $length) use ($body, &$remaining) { if ($remaining === 0) { return ''; } $limit = $remaining === null ? $length : \min($length, $remaining); $data = $body->read($limit); if ($remaining !== null) { $remaining -= \strlen($data); } return $data; }; } // If the Expect header is not present, prevent curl from adding it if (!$request->hasHeader('Expect')) { $conf[\CURLOPT_HTTPHEADER][] = 'Expect:'; } // cURL sometimes adds a content-type by default. Prevent this. if (!$request->hasHeader('Content-Type')) { $conf[\CURLOPT_HTTPHEADER][] = 'Content-Type:'; } } private function applyHeaders(EasyHandle $easy, array &$conf): void { foreach ($conf['_headers'] as $name => $values) { // A first-class Proxy-Authorization header is proxy-scoped and // must never be generated in the origin header list; managed // handling routes it to CURLOPT_PROXYHEADER or safely omits it on // a legacy non-HTTP-proxy route. The // caselessEquals() helper is locale-independent, unlike // strcasecmp(), so a locale cannot make this match miss and // re-leak the credential. if (Psr7\Utils::caselessEquals((string) $name, 'Proxy-Authorization')) { continue; } foreach ($values as $value) { $value = (string) $value; if ($value === '') { // cURL requires a special format for empty headers. // See https://github.com/guzzle/guzzle/issues/1882 for more details. $conf[\CURLOPT_HTTPHEADER][] = "$name;"; } else { $conf[\CURLOPT_HTTPHEADER][] = "$name: $value"; } } } // Remove the Accept header if one was not set if (!$easy->request->hasHeader('Accept')) { $conf[\CURLOPT_HTTPHEADER][] = 'Accept:'; } } /** * Remove a header from the options array. * * @param string $name Case-insensitive header to remove * @param array $options Array of options to modify */ private function removeHeader(string $name, array &$options): void { foreach (\array_keys($options['_headers']) as $key) { if (Psr7\Utils::caselessEquals((string) $key, $name)) { unset($options['_headers'][$key]); return; } } } private function applyHandlerOptions(EasyHandle $easy, array &$conf): void { $options = $easy->options; if (isset($options['verify'])) { if ($options['verify'] === false) { unset($conf[\CURLOPT_CAINFO]); $conf[\CURLOPT_SSL_VERIFYHOST] = 0; $conf[\CURLOPT_SSL_VERIFYPEER] = false; } else { $conf[\CURLOPT_SSL_VERIFYHOST] = 2; $conf[\CURLOPT_SSL_VERIFYPEER] = true; if (\is_string($options['verify'])) { // Throw an error if the file/folder/link path is not valid or doesn't exist. if (!\file_exists($options['verify'])) { throw new \InvalidArgumentException("SSL CA bundle not found: {$options['verify']}"); } // If it's a directory or a link to a directory use CURLOPT_CAPATH. // If not, it's probably a file, or a link to a file, so use CURLOPT_CAINFO. if ( \is_dir($options['verify']) || ( \is_link($options['verify']) === true && ($verifyLink = \readlink($options['verify'])) !== false && \is_dir($verifyLink) ) ) { $conf[\CURLOPT_CAPATH] = $options['verify']; } else { $conf[\CURLOPT_CAINFO] = $options['verify']; } } } } if (!isset($options['curl'][\CURLOPT_ENCODING]) && isset($options['decode_content']) && $options['decode_content'] !== false) { $accept = $easy->request->getHeaderLine('Accept-Encoding'); if ($accept !== '') { $conf[\CURLOPT_ENCODING] = $accept; } else { // The empty string enables all available decoders and implicitly // sets a matching 'Accept-Encoding' header. $conf[\CURLOPT_ENCODING] = ''; // But as the user did not specify any encoding preference, // let's leave it up to server by preventing curl from sending // the header, which will be interpreted as 'Accept-Encoding: *'. // https://www.rfc-editor.org/rfc/rfc9110#field.accept-encoding $conf[\CURLOPT_HTTPHEADER][] = 'Accept-Encoding:'; } } if (!isset($options['sink'])) { // Use a default temp stream if no sink was set. $options['sink'] = Psr7\Utils::tryFopen('php://temp', 'w+'); } $sink = $options['sink']; if (!\is_string($sink)) { $sink = Psr7\Utils::streamFor($sink); } elseif (!\is_dir(\dirname($sink))) { // Ensure that the directory exists before failing in curl. throw new \RuntimeException(\sprintf('Directory %s does not exist for sink value of %s', \dirname($sink), $sink)); } else { $sink = new LazyOpenStream($sink, 'w+'); } $easy->sink = $sink; $conf[\CURLOPT_WRITEFUNCTION] = static function ($ch, $write) use ($sink): int { return $sink->write($write); }; $timeoutRequiresNoSignal = false; if (isset($options['timeout'])) { $timeoutRequiresNoSignal |= $options['timeout'] < 1; $conf[\CURLOPT_TIMEOUT_MS] = $options['timeout'] * 1000; } // CURL default value is CURL_IPRESOLVE_WHATEVER if (isset($options['force_ip_resolve'])) { if ('v4' === $options['force_ip_resolve']) { $conf[\CURLOPT_IPRESOLVE] = \CURL_IPRESOLVE_V4; } elseif ('v6' === $options['force_ip_resolve']) { $conf[\CURLOPT_IPRESOLVE] = \CURL_IPRESOLVE_V6; } } if (isset($options['connect_timeout'])) { $timeoutRequiresNoSignal |= $options['connect_timeout'] < 1; $conf[\CURLOPT_CONNECTTIMEOUT_MS] = $options['connect_timeout'] * 1000; } if ($timeoutRequiresNoSignal && Psr7\Utils::asciiToUpper(\substr(\PHP_OS, 0, 3)) !== 'WIN') { $conf[\CURLOPT_NOSIGNAL] = true; } // Always pin CURLOPT_PROXY (and CURLOPT_NOPROXY when available) so // that libcurl never falls back to reading proxy environment // variables itself. When the proxy request option makes no decision, // the environment is resolved here with libcurl's own semantics. [$proxyConf, $noProxyConf] = self::resolveProxy($easy->request, $options); self::assertResolvedProxySupported($easy->request, $proxyConf); $conf[\CURLOPT_PROXY] = $proxyConf; if (\defined('CURLOPT_NOPROXY')) { $conf[(int) \constant('CURLOPT_NOPROXY')] = $noProxyConf; } $this->applyTlsVersionRange($easy, $conf); $certType = null; if (isset($options['cert_type'])) { $certType = self::normalizeTlsFileType('cert_type', $options['cert_type']); $conf[\CURLOPT_SSLCERTTYPE] = $certType; } if (isset($options['cert'])) { $cert = $options['cert']; if (\is_array($cert)) { if (!isset($cert[0]) || !\is_string($cert[0])) { throw new \InvalidArgumentException('Invalid cert request option'); } if (isset($cert[1])) { if (!\is_string($cert[1])) { throw new \InvalidArgumentException('Invalid cert request option'); } $conf[\CURLOPT_SSLCERTPASSWD] = $cert[1]; } $cert = $cert[0]; } if (!\is_string($cert)) { throw new \InvalidArgumentException('Invalid cert request option'); } if (!\file_exists($cert)) { throw new \InvalidArgumentException("SSL certificate not found: {$cert}"); } // OpenSSL (versions 0.9.3 and later) also support "P12" for PKCS#12-encoded files. // see https://curl.se/libcurl/c/CURLOPT_SSLCERTTYPE.html $ext = pathinfo($cert, \PATHINFO_EXTENSION); if ($certType === null && preg_match('#^(der|p12)$#iD', $ext)) { $conf[\CURLOPT_SSLCERTTYPE] = Psr7\Utils::asciiToUpper($ext); } $conf[\CURLOPT_SSLCERT] = $cert; } $sslKeyType = null; if (isset($options['ssl_key_type'])) { $sslKeyType = self::normalizeTlsFileType('ssl_key_type', $options['ssl_key_type']); $conf[\CURLOPT_SSLKEYTYPE] = $sslKeyType; } if (isset($options['ssl_key'])) { if (\is_array($options['ssl_key'])) { if (!isset($options['ssl_key'][0]) || !\is_string($options['ssl_key'][0])) { throw new \InvalidArgumentException('Invalid ssl_key request option'); } if (isset($options['ssl_key'][1])) { if (!\is_string($options['ssl_key'][1])) { throw new \InvalidArgumentException('Invalid ssl_key request option'); } $conf[\CURLOPT_SSLKEYPASSWD] = $options['ssl_key'][1]; } $sslKey = $options['ssl_key'][0]; } $sslKey = $sslKey ?? $options['ssl_key']; if (!\is_string($sslKey)) { throw new \InvalidArgumentException('Invalid ssl_key request option'); } if (self::shouldValidateSslKeyFile($sslKeyType) && !\file_exists($sslKey)) { throw new \InvalidArgumentException("SSL private key not found: {$sslKey}"); } $conf[\CURLOPT_SSLKEY] = $sslKey; } if (isset($options['progress'])) { $progress = $options['progress']; if (!\is_callable($progress)) { throw new \InvalidArgumentException('progress client option must be callable'); } $conf[\CURLOPT_NOPROGRESS] = false; $conf[\CURLOPT_PROGRESSFUNCTION] = static function ($resource, int $downloadSize, int $downloaded, int $uploadSize, int $uploaded) use ($progress) { $progress($downloadSize, $downloaded, $uploadSize, $uploaded); }; } if (!empty($options['debug'])) { $conf[\CURLOPT_STDERR] = Utils::debugResource($options['debug']); $conf[\CURLOPT_VERBOSE] = true; } } private function applyTlsVersionRange(EasyHandle $easy, array &$conf): void { $options = $easy->options; $cryptoMethod = $options['crypto_method'] ?? null; $cryptoMethodMax = $options['crypto_method_max'] ?? null; if ($cryptoMethod === null && $cryptoMethodMax === null) { return; } $protocolVersion = $easy->request->getProtocolVersion(); $isHttp2 = '2' === $protocolVersion || '2.0' === $protocolVersion; if ($isHttp2 && $cryptoMethodMax !== null && TlsVersion::ordinal('crypto_method_max', $cryptoMethodMax) < 12) { throw new \InvalidArgumentException( 'Invalid crypto_method_max request option: HTTP/2 requires TLS 1.2 or higher' ); } if ($isHttp2 && $cryptoMethod !== null && TlsVersion::ordinal('crypto_method', $cryptoMethod) < 12) { $cryptoMethod = \STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT; } TlsVersion::assertRange($cryptoMethod, $cryptoMethodMax); $sslVersion = $cryptoMethod === null ? \CURL_SSLVERSION_DEFAULT : self::curlMinSslVersion($cryptoMethod); if ($cryptoMethodMax !== null) { $sslVersion |= self::curlMaxSslVersion($cryptoMethodMax); } $conf[\CURLOPT_SSLVERSION] = $sslVersion; } /** * @param mixed $value */ private static function curlMinSslVersion($value): int { if ($value === \STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT) { return \CURL_SSLVERSION_TLSv1_0; } if ($value === \STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT) { return \CURL_SSLVERSION_TLSv1_1; } if ($value === \STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT) { if (!CurlVersion::supportsTls12()) { throw new \InvalidArgumentException('Invalid crypto_method request option: TLS 1.2 not supported by your version of cURL'); } return \CURL_SSLVERSION_TLSv1_2; } if (\defined('STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT') && $value === \STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT) { if (!CurlVersion::supportsTls13()) { throw new \InvalidArgumentException('Invalid crypto_method request option: TLS 1.3 not supported by your version of cURL'); } return \CURL_SSLVERSION_TLSv1_3; } throw new \InvalidArgumentException('Invalid crypto_method request option: unknown version provided'); } /** * @param mixed $value */ private static function curlMaxSslVersion($value): int { if ($value === \STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT) { return self::requireCurlMaxSslVersion('CURL_SSLVERSION_MAX_TLSv1_0'); } if ($value === \STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT) { return self::requireCurlMaxSslVersion('CURL_SSLVERSION_MAX_TLSv1_1'); } if ($value === \STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT) { return self::requireCurlMaxSslVersion('CURL_SSLVERSION_MAX_TLSv1_2'); } if (\defined('STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT') && $value === \STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT) { return self::requireCurlMaxSslVersion('CURL_SSLVERSION_MAX_TLSv1_3'); } throw new \InvalidArgumentException('Invalid crypto_method_max request option: unknown version provided'); } private static function requireCurlMaxSslVersion(string $constant): int { if (\defined($constant)) { /** @var int */ return \constant($constant); } throw new \InvalidArgumentException( 'Invalid crypto_method_max request option: maximum TLS version control is not supported by your version of cURL' ); } private static function validateRequestUriScheme(RequestInterface $request): void { $scheme = $request->getUri()->getScheme(); if ($scheme === '') { throw new RequestException('URI must include a scheme and host. Use an absolute URI, a network-path reference starting with //, or configure a base_uri.', $request); } if (!\in_array($scheme, ['http', 'https'], true)) { throw new RequestException(\sprintf("The scheme '%s' is not supported.", $scheme), $request); } } /** * This function ensures that a response was set on a transaction. If one * was not set, then the request is retried if possible. This error * typically means you are sending a payload, curl encountered a * "Connection died, retrying a fresh connect" error, tried to rewind the * stream, and then encountered a "necessary data rewind wasn't possible" * error, causing the request to be sent through curl_multi_info_read() * without an error status. * * @param callable(RequestInterface, array): PromiseInterface $handler */ private static function retryFailedRewind(callable $handler, EasyHandle $easy, array $ctx): PromiseInterface { try { // Only rewind if the body has been read from. $body = $easy->request->getBody(); if ($body->tell() > 0) { $body->rewind(); } } catch (\RuntimeException $e) { $ctx['error'] = 'The connection unexpectedly failed without ' .'providing an error. The request would have been retried, ' .'but attempting to rewind the request body failed. ' .'Exception: '.$e; return self::createRejection($easy, $ctx); } // Retry no more than 3 times before giving up. if (!isset($easy->options['_curl_retries'])) { $easy->options['_curl_retries'] = 1; } elseif ($easy->options['_curl_retries'] == 2) { $ctx['error'] = 'The cURL request was retried 3 times ' .'and did not succeed. The most likely reason for the failure ' .'is that cURL was unable to rewind the body of the request ' .'and subsequent retries resulted in the same error. Turn on ' .'the debug option to see what went wrong. See ' .'https://bugs.php.net/bug.php?id=47204 for more information.'; return self::createRejection($easy, $ctx); } else { ++$easy->options['_curl_retries']; } return $handler($easy->request, $easy->options); } /** * Parses validated trailer field lines into an associative array keyed by * lowercased field name, preserving first-occurrence key order and wire * value order. */ private static function headersFromTrailerLines(array $lines): array { $headers = []; foreach ($lines as $line) { [$name, $value] = \explode(':', $line, 2); $name = Psr7\Utils::asciiToLower(\trim($name, " \n\r\t\0\x0B")); $headers[$name][] = \trim($value, " \n\r\t\0\x0B"); } return $headers; } private function createHeaderFn(EasyHandle $easy): callable { if (isset($easy->options['on_headers'])) { $onHeaders = $easy->options['on_headers']; if (!\is_callable($onHeaders)) { throw new \InvalidArgumentException('on_headers must be callable'); } } else { $onHeaders = null; } $startingResponse = false; $collectingTrailers = false; $retainTrailers = isset($easy->options['on_trailers']); return static function ($ch, $h) use ( $onHeaders, $easy, &$startingResponse, &$collectingTrailers, $retainTrailers ) { $value = \trim($h, " \n\r\t\0\x0B"); if ($h === "\r\n" || $h === "\n" || $h === "\r" || $h === '') { if ($collectingTrailers) { // A blank line ends the trailer section; the response has // already been created. return \strlen($h); } $startingResponse = true; try { $easy->createResponse(); } catch (\Throwable $e) { $easy->response = null; $easy->createResponseException = $e; return -1; } if ($onHeaders !== null) { try { $onHeaders($easy->response); } catch (\Throwable $e) { // Associate the exception with the handle and trigger // a curl header write error by returning 0. $easy->onHeadersException = $e; return -1; } } } elseif ($startingResponse || $collectingTrailers) { if ($easy->response !== null && !HeaderProcessor::isStatusLineCandidate($h)) { // Trailer fields arrive through the header callback after // the body; a new header block always begins with a status // line. $collectingTrailers = true; if ($retainTrailers && HeaderProcessor::isValidHeaderFieldLine($h)) { $easy->trailers[] = $value; } } else { $collectingTrailers = false; $easy->trailers = []; $easy->headers = [$value]; } $startingResponse = false; } else { $easy->headers[] = $value; } return \strlen($h); }; } public function __destruct() { $this->discardIdleHandles(); } }
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