--- /dev/null
+<?php
+/**
+ * fsockopen HTTP transport
+ *
+ * @package Requests
+ * @subpackage Transport
+ */
+
+/**
+ * fsockopen HTTP transport
+ *
+ * @package Requests
+ * @subpackage Transport
+ */
+class Requests_Transport_fsockopen implements Requests_Transport {
+ /**
+ * Second to microsecond conversion
+ *
+ * @var integer
+ */
+ const SECOND_IN_MICROSECONDS = 1000000;
+
+ /**
+ * Raw HTTP data
+ *
+ * @var string
+ */
+ public $headers = '';
+
+ /**
+ * Stream metadata
+ *
+ * @var array Associative array of properties, see {@see https://secure.php.net/stream_get_meta_data}
+ */
+ public $info;
+
+ /**
+ * What's the maximum number of bytes we should keep?
+ *
+ * @var int|bool Byte count, or false if no limit.
+ */
+ protected $max_bytes = false;
+
+ protected $connect_error = '';
+
+ /**
+ * Perform a request
+ *
+ * @throws Requests_Exception On failure to connect to socket (`fsockopenerror`)
+ * @throws Requests_Exception On socket timeout (`timeout`)
+ *
+ * @param string $url URL to request
+ * @param array $headers Associative array of request headers
+ * @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
+ * @param array $options Request options, see {@see Requests::response()} for documentation
+ * @return string Raw HTTP result
+ */
+ public function request($url, $headers = array(), $data = array(), $options = array()) {
+ $options['hooks']->dispatch('fsockopen.before_request');
+
+ $url_parts = parse_url($url);
+ if (empty($url_parts)) {
+ throw new Requests_Exception('Invalid URL.', 'invalidurl', $url);
+ }
+ $host = $url_parts['host'];
+ $context = stream_context_create();
+ $verifyname = false;
+ $case_insensitive_headers = new Requests_Utility_CaseInsensitiveDictionary($headers);
+
+ // HTTPS support
+ if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https') {
+ $remote_socket = 'ssl://' . $host;
+ $url_parts['port'] = 443;
+
+ $context_options = array(
+ 'verify_peer' => true,
+ // 'CN_match' => $host,
+ 'capture_peer_cert' => true
+ );
+ $verifyname = true;
+
+ // SNI, if enabled (OpenSSL >=0.9.8j)
+ if (defined('OPENSSL_TLSEXT_SERVER_NAME') && OPENSSL_TLSEXT_SERVER_NAME) {
+ $context_options['SNI_enabled'] = true;
+ if (isset($options['verifyname']) && $options['verifyname'] === false) {
+ $context_options['SNI_enabled'] = false;
+ }
+ }
+
+ if (isset($options['verify'])) {
+ if ($options['verify'] === false) {
+ $context_options['verify_peer'] = false;
+ }
+ elseif (is_string($options['verify'])) {
+ $context_options['cafile'] = $options['verify'];
+ }
+ }
+
+ if (isset($options['verifyname']) && $options['verifyname'] === false) {
+ $verifyname = false;
+ }
+
+ stream_context_set_option($context, array('ssl' => $context_options));
+ }
+ else {
+ $remote_socket = 'tcp://' . $host;
+ }
+
+ $this->max_bytes = $options['max_bytes'];
+
+ if (!isset($url_parts['port'])) {
+ $url_parts['port'] = 80;
+ }
+ $remote_socket .= ':' . $url_parts['port'];
+
+ set_error_handler(array($this, 'connect_error_handler'), E_WARNING | E_NOTICE);
+
+ $options['hooks']->dispatch('fsockopen.remote_socket', array(&$remote_socket));
+
+ $socket = stream_socket_client($remote_socket, $errno, $errstr, ceil($options['connect_timeout']), STREAM_CLIENT_CONNECT, $context);
+
+ restore_error_handler();
+
+ if ($verifyname && !$this->verify_certificate_from_context($host, $context)) {
+ throw new Requests_Exception('SSL certificate did not match the requested domain name', 'ssl.no_match');
+ }
+
+ if (!$socket) {
+ if ($errno === 0) {
+ // Connection issue
+ throw new Requests_Exception(rtrim($this->connect_error), 'fsockopen.connect_error');
+ }
+
+ throw new Requests_Exception($errstr, 'fsockopenerror', null, $errno);
+ }
+
+ $data_format = $options['data_format'];
+
+ if ($data_format === 'query') {
+ $path = self::format_get($url_parts, $data);
+ $data = '';
+ }
+ else {
+ $path = self::format_get($url_parts, array());
+ }
+
+ $options['hooks']->dispatch('fsockopen.remote_host_path', array(&$path, $url));
+
+ $request_body = '';
+ $out = sprintf("%s %s HTTP/%.1f\r\n", $options['type'], $path, $options['protocol_version']);
+
+ if ($options['type'] !== Requests::TRACE) {
+ if (is_array($data)) {
+ $request_body = http_build_query($data, null, '&');
+ }
+ else {
+ $request_body = $data;
+ }
+
+ if (!empty($data)) {
+ if (!isset($case_insensitive_headers['Content-Length'])) {
+ $headers['Content-Length'] = strlen($request_body);
+ }
+
+ if (!isset($case_insensitive_headers['Content-Type'])) {
+ $headers['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8';
+ }
+ }
+ }
+
+ if (!isset($case_insensitive_headers['Host'])) {
+ $out .= sprintf('Host: %s', $url_parts['host']);
+
+ if ($url_parts['port'] !== 80) {
+ $out .= ':' . $url_parts['port'];
+ }
+ $out .= "\r\n";
+ }
+
+ if (!isset($case_insensitive_headers['User-Agent'])) {
+ $out .= sprintf("User-Agent: %s\r\n", $options['useragent']);
+ }
+
+ $accept_encoding = $this->accept_encoding();
+ if (!isset($case_insensitive_headers['Accept-Encoding']) && !empty($accept_encoding)) {
+ $out .= sprintf("Accept-Encoding: %s\r\n", $accept_encoding);
+ }
+
+ $headers = Requests::flatten($headers);
+
+ if (!empty($headers)) {
+ $out .= implode($headers, "\r\n") . "\r\n";
+ }
+
+ $options['hooks']->dispatch('fsockopen.after_headers', array(&$out));
+
+ if (substr($out, -2) !== "\r\n") {
+ $out .= "\r\n";
+ }
+
+ if (!isset($case_insensitive_headers['Connection'])) {
+ $out .= "Connection: Close\r\n";
+ }
+
+ $out .= "\r\n" . $request_body;
+
+ $options['hooks']->dispatch('fsockopen.before_send', array(&$out));
+
+ fwrite($socket, $out);
+ $options['hooks']->dispatch('fsockopen.after_send', array($out));
+
+ if (!$options['blocking']) {
+ fclose($socket);
+ $fake_headers = '';
+ $options['hooks']->dispatch('fsockopen.after_request', array(&$fake_headers));
+ return '';
+ }
+
+ $timeout_sec = (int) floor($options['timeout']);
+ if ($timeout_sec == $options['timeout']) {
+ $timeout_msec = 0;
+ }
+ else {
+ $timeout_msec = self::SECOND_IN_MICROSECONDS * $options['timeout'] % self::SECOND_IN_MICROSECONDS;
+ }
+ stream_set_timeout($socket, $timeout_sec, $timeout_msec);
+
+ $response = $body = $headers = '';
+ $this->info = stream_get_meta_data($socket);
+ $size = 0;
+ $doingbody = false;
+ $download = false;
+ if ($options['filename']) {
+ $download = fopen($options['filename'], 'wb');
+ }
+
+ while (!feof($socket)) {
+ $this->info = stream_get_meta_data($socket);
+ if ($this->info['timed_out']) {
+ throw new Requests_Exception('fsocket timed out', 'timeout');
+ }
+
+ $block = fread($socket, Requests::BUFFER_SIZE);
+ if (!$doingbody) {
+ $response .= $block;
+ if (strpos($response, "\r\n\r\n")) {
+ list($headers, $block) = explode("\r\n\r\n", $response, 2);
+ $doingbody = true;
+ }
+ }
+
+ // Are we in body mode now?
+ if ($doingbody) {
+ $options['hooks']->dispatch('request.progress', array($block, $size, $this->max_bytes));
+ $data_length = strlen($block);
+ if ($this->max_bytes) {
+ // Have we already hit a limit?
+ if ($size === $this->max_bytes) {
+ continue;
+ }
+ if (($size + $data_length) > $this->max_bytes) {
+ // Limit the length
+ $limited_length = ($this->max_bytes - $size);
+ $block = substr($block, 0, $limited_length);
+ }
+ }
+
+ $size += strlen($block);
+ if ($download) {
+ fwrite($download, $block);
+ }
+ else {
+ $body .= $block;
+ }
+ }
+ }
+ $this->headers = $headers;
+
+ if ($download) {
+ fclose($download);
+ }
+ else {
+ $this->headers .= "\r\n\r\n" . $body;
+ }
+ fclose($socket);
+
+ $options['hooks']->dispatch('fsockopen.after_request', array(&$this->headers, &$this->info));
+ return $this->headers;
+ }
+
+ /**
+ * Send multiple requests simultaneously
+ *
+ * @param array $requests Request data (array of 'url', 'headers', 'data', 'options') as per {@see Requests_Transport::request}
+ * @param array $options Global options, see {@see Requests::response()} for documentation
+ * @return array Array of Requests_Response objects (may contain Requests_Exception or string responses as well)
+ */
+ public function request_multiple($requests, $options) {
+ $responses = array();
+ $class = get_class($this);
+ foreach ($requests as $id => $request) {
+ try {
+ $handler = new $class();
+ $responses[$id] = $handler->request($request['url'], $request['headers'], $request['data'], $request['options']);
+
+ $request['options']['hooks']->dispatch('transport.internal.parse_response', array(&$responses[$id], $request));
+ }
+ catch (Requests_Exception $e) {
+ $responses[$id] = $e;
+ }
+
+ if (!is_string($responses[$id])) {
+ $request['options']['hooks']->dispatch('multiple.request.complete', array(&$responses[$id], $id));
+ }
+ }
+
+ return $responses;
+ }
+
+ /**
+ * Retrieve the encodings we can accept
+ *
+ * @return string Accept-Encoding header value
+ */
+ protected static function accept_encoding() {
+ $type = array();
+ if (function_exists('gzinflate')) {
+ $type[] = 'deflate;q=1.0';
+ }
+
+ if (function_exists('gzuncompress')) {
+ $type[] = 'compress;q=0.5';
+ }
+
+ $type[] = 'gzip;q=0.5';
+
+ return implode(', ', $type);
+ }
+
+ /**
+ * Format a URL given GET data
+ *
+ * @param array $url_parts
+ * @param array|object $data Data to build query using, see {@see https://secure.php.net/http_build_query}
+ * @return string URL with data
+ */
+ protected static function format_get($url_parts, $data) {
+ if (!empty($data)) {
+ if (empty($url_parts['query'])) {
+ $url_parts['query'] = '';
+ }
+
+ $url_parts['query'] .= '&' . http_build_query($data, null, '&');
+ $url_parts['query'] = trim($url_parts['query'], '&');
+ }
+ if (isset($url_parts['path'])) {
+ if (isset($url_parts['query'])) {
+ $get = $url_parts['path'] . '?' . $url_parts['query'];
+ }
+ else {
+ $get = $url_parts['path'];
+ }
+ }
+ else {
+ $get = '/';
+ }
+ return $get;
+ }
+
+ /**
+ * Error handler for stream_socket_client()
+ *
+ * @param int $errno Error number (e.g. E_WARNING)
+ * @param string $errstr Error message
+ */
+ public function connect_error_handler($errno, $errstr) {
+ // Double-check we can handle it
+ if (($errno & E_WARNING) === 0 && ($errno & E_NOTICE) === 0) {
+ // Return false to indicate the default error handler should engage
+ return false;
+ }
+
+ $this->connect_error .= $errstr . "\n";
+ return true;
+ }
+
+ /**
+ * Verify the certificate against common name and subject alternative names
+ *
+ * Unfortunately, PHP doesn't check the certificate against the alternative
+ * names, leading things like 'https://www.github.com/' to be invalid.
+ * Instead
+ *
+ * @see https://tools.ietf.org/html/rfc2818#section-3.1 RFC2818, Section 3.1
+ *
+ * @throws Requests_Exception On failure to connect via TLS (`fsockopen.ssl.connect_error`)
+ * @throws Requests_Exception On not obtaining a match for the host (`fsockopen.ssl.no_match`)
+ * @param string $host Host name to verify against
+ * @param resource $context Stream context
+ * @return bool
+ */
+ public function verify_certificate_from_context($host, $context) {
+ $meta = stream_context_get_options($context);
+
+ // If we don't have SSL options, then we couldn't make the connection at
+ // all
+ if (empty($meta) || empty($meta['ssl']) || empty($meta['ssl']['peer_certificate'])) {
+ throw new Requests_Exception(rtrim($this->connect_error), 'ssl.connect_error');
+ }
+
+ $cert = openssl_x509_parse($meta['ssl']['peer_certificate']);
+
+ return Requests_SSL::verify_certificate($host, $cert);
+ }
+
+ /**
+ * Whether this transport is valid
+ *
+ * @codeCoverageIgnore
+ * @return boolean True if the transport is valid, false otherwise.
+ */
+ public static function test($capabilities = array()) {
+ if (!function_exists('fsockopen')) {
+ return false;
+ }
+
+ // If needed, check that streams support SSL
+ if (isset($capabilities['ssl']) && $capabilities['ssl']) {
+ if (!extension_loaded('openssl') || !function_exists('openssl_x509_parse')) {
+ return false;
+ }
+
+ // Currently broken, thanks to https://github.com/facebook/hhvm/issues/2156
+ if (defined('HHVM_VERSION')) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+}
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