diff -r 000000000000 -r d970ebf37754 wp/wp-includes/class-http.php --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wp/wp-includes/class-http.php Wed Nov 06 03:21:17 2013 +0000 @@ -0,0 +1,1954 @@ + 'GET', + 'timeout' => apply_filters( 'http_request_timeout', 5), + 'redirection' => apply_filters( 'http_request_redirection_count', 5), + 'httpversion' => apply_filters( 'http_request_version', '1.0'), + 'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ) ), + 'reject_unsafe_urls' => apply_filters( 'http_request_reject_unsafe_urls', false ), + 'blocking' => true, + 'headers' => array(), + 'cookies' => array(), + 'body' => null, + 'compress' => false, + 'decompress' => true, + 'sslverify' => true, + 'sslcertificates' => ABSPATH . WPINC . '/certificates/ca-bundle.crt', + 'stream' => false, + 'filename' => null, + 'limit_response_size' => null, + ); + + // Pre-parse for the HEAD checks. + $args = wp_parse_args( $args ); + + // By default, Head requests do not cause redirections. + if ( isset($args['method']) && 'HEAD' == $args['method'] ) + $defaults['redirection'] = 0; + + $r = wp_parse_args( $args, $defaults ); + $r = apply_filters( 'http_request_args', $r, $url ); + + // The transports decrement this, store a copy of the original value for loop purposes. + if ( ! isset( $r['_redirection'] ) ) + $r['_redirection'] = $r['redirection']; + + // Allow plugins to short-circuit the request + $pre = apply_filters( 'pre_http_request', false, $r, $url ); + if ( false !== $pre ) + return $pre; + + if ( function_exists( 'wp_kses_bad_protocol' ) ) { + if ( $r['reject_unsafe_urls'] ) + $url = wp_http_validate_url( $url ); + $url = wp_kses_bad_protocol( $url, array( 'http', 'https', 'ssl' ) ); + } + + $arrURL = @parse_url( $url ); + + if ( empty( $url ) || empty( $arrURL['scheme'] ) ) + return new WP_Error('http_request_failed', __('A valid URL was not provided.')); + + if ( $this->block_request( $url ) ) + return new WP_Error( 'http_request_failed', __( 'User has blocked requests through HTTP.' ) ); + + // Determine if this is a https call and pass that on to the transport functions + // so that we can blacklist the transports that do not support ssl verification + $r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl'; + + // Determine if this request is to OUR install of WordPress + $homeURL = parse_url( get_bloginfo( 'url' ) ); + $r['local'] = $homeURL['host'] == $arrURL['host'] || 'localhost' == $arrURL['host']; + unset( $homeURL ); + + // If we are streaming to a file but no filename was given drop it in the WP temp dir + // and pick its name using the basename of the $url + if ( $r['stream'] && empty( $r['filename'] ) ) + $r['filename'] = get_temp_dir() . basename( $url ); + + // Force some settings if we are streaming to a file and check for existence and perms of destination directory + if ( $r['stream'] ) { + $r['blocking'] = true; + if ( ! wp_is_writable( dirname( $r['filename'] ) ) ) + return new WP_Error( 'http_request_failed', __( 'Destination directory for file streaming does not exist or is not writable.' ) ); + } + + if ( is_null( $r['headers'] ) ) + $r['headers'] = array(); + + if ( ! is_array( $r['headers'] ) ) { + $processedHeaders = WP_Http::processHeaders( $r['headers'], $url ); + $r['headers'] = $processedHeaders['headers']; + } + + if ( isset( $r['headers']['User-Agent'] ) ) { + $r['user-agent'] = $r['headers']['User-Agent']; + unset( $r['headers']['User-Agent'] ); + } + + if ( isset( $r['headers']['user-agent'] ) ) { + $r['user-agent'] = $r['headers']['user-agent']; + unset( $r['headers']['user-agent'] ); + } + + if ( '1.1' == $r['httpversion'] && !isset( $r['headers']['connection'] ) ) { + $r['headers']['connection'] = 'close'; + } + + // Construct Cookie: header if any cookies are set + WP_Http::buildCookieHeader( $r ); + + // Avoid issues where mbstring.func_overload is enabled + mbstring_binary_safe_encoding(); + + if ( ! isset( $r['headers']['Accept-Encoding'] ) ) { + if ( $encoding = WP_Http_Encoding::accept_encoding( $url, $r ) ) + $r['headers']['Accept-Encoding'] = $encoding; + } + + if ( ( ! is_null( $r['body'] ) && '' != $r['body'] ) || 'POST' == $r['method'] || 'PUT' == $r['method'] ) { + if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) { + $r['body'] = http_build_query( $r['body'], null, '&' ); + + if ( ! isset( $r['headers']['Content-Type'] ) ) + $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ); + } + + if ( '' === $r['body'] ) + $r['body'] = null; + + if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) ) + $r['headers']['Content-Length'] = strlen( $r['body'] ); + } + + $response = $this->_dispatch_request( $url, $r ); + + reset_mbstring_encoding(); + + if ( is_wp_error( $response ) ) + return $response; + + // Append cookies that were used in this request to the response + if ( ! empty( $r['cookies'] ) ) { + $cookies_set = wp_list_pluck( $response['cookies'], 'name' ); + foreach ( $r['cookies'] as $cookie ) { + if ( ! in_array( $cookie->name, $cookies_set ) && $cookie->test( $url ) ) { + $response['cookies'][] = $cookie; + } + } + } + + return $response; + } + + /** + * Tests which transports are capable of supporting the request. + * + * @since 3.2.0 + * @access private + * + * @param array $args Request arguments + * @param string $url URL to Request + * + * @return string|bool Class name for the first transport that claims to support the request. False if no transport claims to support the request. + */ + public function _get_first_available_transport( $args, $url = null ) { + $request_order = apply_filters( 'http_api_transports', array( 'curl', 'streams' ), $args, $url ); + + // Loop over each transport on each HTTP request looking for one which will serve this request's needs + foreach ( $request_order as $transport ) { + $class = 'WP_HTTP_' . $transport; + + // Check to see if this transport is a possibility, calls the transport statically + if ( !call_user_func( array( $class, 'test' ), $args, $url ) ) + continue; + + return $class; + } + + return false; + } + + /** + * Dispatches a HTTP request to a supporting transport. + * + * Tests each transport in order to find a transport which matches the request arguments. + * Also caches the transport instance to be used later. + * + * The order for requests is cURL, and then PHP Streams. + * + * @since 3.2.0 + * @access private + * + * @param string $url URL to Request + * @param array $args Request arguments + * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error + */ + private function _dispatch_request( $url, $args ) { + static $transports = array(); + + $class = $this->_get_first_available_transport( $args, $url ); + if ( !$class ) + return new WP_Error( 'http_failure', __( 'There are no HTTP transports available which can complete the requested request.' ) ); + + // Transport claims to support request, instantiate it and give it a whirl. + if ( empty( $transports[$class] ) ) + $transports[$class] = new $class; + + $response = $transports[$class]->request( $url, $args ); + + do_action( 'http_api_debug', $response, 'response', $class, $args, $url ); + + if ( is_wp_error( $response ) ) + return $response; + + return apply_filters( 'http_response', $response, $args, $url ); + } + + /** + * Uses the POST HTTP method. + * + * Used for sending data that is expected to be in the body. + * + * @access public + * @since 2.7.0 + * + * @param string $url URI resource. + * @param str|array $args Optional. Override the defaults. + * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error + */ + function post($url, $args = array()) { + $defaults = array('method' => 'POST'); + $r = wp_parse_args( $args, $defaults ); + return $this->request($url, $r); + } + + /** + * Uses the GET HTTP method. + * + * Used for sending data that is expected to be in the body. + * + * @access public + * @since 2.7.0 + * + * @param string $url URI resource. + * @param str|array $args Optional. Override the defaults. + * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error + */ + function get($url, $args = array()) { + $defaults = array('method' => 'GET'); + $r = wp_parse_args( $args, $defaults ); + return $this->request($url, $r); + } + + /** + * Uses the HEAD HTTP method. + * + * Used for sending data that is expected to be in the body. + * + * @access public + * @since 2.7.0 + * + * @param string $url URI resource. + * @param str|array $args Optional. Override the defaults. + * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error + */ + function head($url, $args = array()) { + $defaults = array('method' => 'HEAD'); + $r = wp_parse_args( $args, $defaults ); + return $this->request($url, $r); + } + + /** + * Parses the responses and splits the parts into headers and body. + * + * @access public + * @static + * @since 2.7.0 + * + * @param string $strResponse The full response string + * @return array Array with 'headers' and 'body' keys. + */ + public static function processResponse($strResponse) { + $res = explode("\r\n\r\n", $strResponse, 2); + + return array('headers' => $res[0], 'body' => isset($res[1]) ? $res[1] : ''); + } + + /** + * Transform header string into an array. + * + * If an array is given then it is assumed to be raw header data with numeric keys with the + * headers as the values. No headers must be passed that were already processed. + * + * @access public + * @static + * @since 2.7.0 + * + * @param string|array $headers + * @param string $url The URL that was requested + * @return array Processed string headers. If duplicate headers are encountered, + * Then a numbered array is returned as the value of that header-key. + */ + public static function processHeaders( $headers, $url = '' ) { + // split headers, one per array element + if ( is_string($headers) ) { + // tolerate line terminator: CRLF = LF (RFC 2616 19.3) + $headers = str_replace("\r\n", "\n", $headers); + // unfold folded header fields. LWS = [CRLF] 1*( SP | HT ) , (RFC 2616 2.2) + $headers = preg_replace('/\n[ \t]/', ' ', $headers); + // create the headers array + $headers = explode("\n", $headers); + } + + $response = array('code' => 0, 'message' => ''); + + // If a redirection has taken place, The headers for each page request may have been passed. + // In this case, determine the final HTTP header and parse from there. + for ( $i = count($headers)-1; $i >= 0; $i-- ) { + if ( !empty($headers[$i]) && false === strpos($headers[$i], ':') ) { + $headers = array_splice($headers, $i); + break; + } + } + + $cookies = array(); + $newheaders = array(); + foreach ( (array) $headers as $tempheader ) { + if ( empty($tempheader) ) + continue; + + if ( false === strpos($tempheader, ':') ) { + $stack = explode(' ', $tempheader, 3); + $stack[] = ''; + list( , $response['code'], $response['message']) = $stack; + continue; + } + + list($key, $value) = explode(':', $tempheader, 2); + + $key = strtolower( $key ); + $value = trim( $value ); + + if ( isset( $newheaders[ $key ] ) ) { + if ( ! is_array( $newheaders[ $key ] ) ) + $newheaders[$key] = array( $newheaders[ $key ] ); + $newheaders[ $key ][] = $value; + } else { + $newheaders[ $key ] = $value; + } + if ( 'set-cookie' == $key ) + $cookies[] = new WP_Http_Cookie( $value, $url ); + } + + return array('response' => $response, 'headers' => $newheaders, 'cookies' => $cookies); + } + + /** + * Takes the arguments for a ::request() and checks for the cookie array. + * + * If it's found, then it upgrades any basic name => value pairs to WP_Http_Cookie instances, + * which are each parsed into strings and added to the Cookie: header (within the arguments array). + * Edits the array by reference. + * + * @access public + * @version 2.8.0 + * @static + * + * @param array $r Full array of args passed into ::request() + */ + public static function buildCookieHeader( &$r ) { + if ( ! empty($r['cookies']) ) { + // Upgrade any name => value cookie pairs to WP_HTTP_Cookie instances + foreach ( $r['cookies'] as $name => $value ) { + if ( ! is_object( $value ) ) + $r['cookies'][ $name ] = new WP_HTTP_Cookie( array( 'name' => $name, 'value' => $value ) ); + } + + $cookies_header = ''; + foreach ( (array) $r['cookies'] as $cookie ) { + $cookies_header .= $cookie->getHeaderValue() . '; '; + } + + $cookies_header = substr( $cookies_header, 0, -2 ); + $r['headers']['cookie'] = $cookies_header; + } + } + + /** + * Decodes chunk transfer-encoding, based off the HTTP 1.1 specification. + * + * Based off the HTTP http_encoding_dechunk function. + * + * @link http://tools.ietf.org/html/rfc2616#section-19.4.6 Process for chunked decoding. + * + * @access public + * @since 2.7.0 + * @static + * + * @param string $body Body content + * @return string Chunked decoded body on success or raw body on failure. + */ + public static function chunkTransferDecode( $body ) { + // The body is not chunked encoded or is malformed. + if ( ! preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', trim( $body ) ) ) + return $body; + + $parsed_body = ''; + $body_original = $body; // We'll be altering $body, so need a backup in case of error + + while ( true ) { + $has_chunk = (bool) preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', $body, $match ); + if ( ! $has_chunk || empty( $match[1] ) ) + return $body_original; + + $length = hexdec( $match[1] ); + $chunk_length = strlen( $match[0] ); + + // Parse out the chunk of data + $parsed_body .= substr( $body, $chunk_length, $length ); + + // Remove the chunk from the raw data + $body = substr( $body, $length + $chunk_length ); + + // End of document + if ( '0' === trim( $body ) ) + return $parsed_body; + } + } + + /** + * Block requests through the proxy. + * + * Those who are behind a proxy and want to prevent access to certain hosts may do so. This will + * prevent plugins from working and core functionality, if you don't include api.wordpress.org. + * + * You block external URL requests by defining WP_HTTP_BLOCK_EXTERNAL as true in your wp-config.php + * file and this will only allow localhost and your blog to make requests. The constant + * WP_ACCESSIBLE_HOSTS will allow additional hosts to go through for requests. The format of the + * WP_ACCESSIBLE_HOSTS constant is a comma separated list of hostnames to allow, wildcard domains + * are supported, eg *.wordpress.org will allow for all subdomains of wordpress.org to be contacted. + * + * @since 2.8.0 + * @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests. + * @link http://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_ACCESSIBLE_HOSTS + * + * @param string $uri URI of url. + * @return bool True to block, false to allow. + */ + function block_request($uri) { + // We don't need to block requests, because nothing is blocked. + if ( ! defined( 'WP_HTTP_BLOCK_EXTERNAL' ) || ! WP_HTTP_BLOCK_EXTERNAL ) + return false; + + $check = parse_url($uri); + if ( ! $check ) + return true; + + $home = parse_url( get_option('siteurl') ); + + // Don't block requests back to ourselves by default + if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] ) + return apply_filters('block_local_requests', false); + + if ( !defined('WP_ACCESSIBLE_HOSTS') ) + return true; + + static $accessible_hosts; + static $wildcard_regex = false; + if ( null == $accessible_hosts ) { + $accessible_hosts = preg_split('|,\s*|', WP_ACCESSIBLE_HOSTS); + + if ( false !== strpos(WP_ACCESSIBLE_HOSTS, '*') ) { + $wildcard_regex = array(); + foreach ( $accessible_hosts as $host ) + $wildcard_regex[] = str_replace( '\*', '.+', preg_quote( $host, '/' ) ); + $wildcard_regex = '/^(' . implode('|', $wildcard_regex) . ')$/i'; + } + } + + if ( !empty($wildcard_regex) ) + return !preg_match($wildcard_regex, $check['host']); + else + return !in_array( $check['host'], $accessible_hosts ); //Inverse logic, If it's in the array, then we can't access it. + + } + + static function make_absolute_url( $maybe_relative_path, $url ) { + if ( empty( $url ) ) + return $maybe_relative_path; + + // Check for a scheme + if ( false !== strpos( $maybe_relative_path, '://' ) ) + return $maybe_relative_path; + + if ( ! $url_parts = @parse_url( $url ) ) + return $maybe_relative_path; + + if ( ! $relative_url_parts = @parse_url( $maybe_relative_path ) ) + return $maybe_relative_path; + + $absolute_path = $url_parts['scheme'] . '://' . $url_parts['host']; + if ( isset( $url_parts['port'] ) ) + $absolute_path .= ':' . $url_parts['port']; + + // Start off with the Absolute URL path + $path = ! empty( $url_parts['path'] ) ? $url_parts['path'] : '/'; + + // If it's a root-relative path, then great + if ( ! empty( $relative_url_parts['path'] ) && '/' == $relative_url_parts['path'][0] ) { + $path = $relative_url_parts['path']; + + // Else it's a relative path + } elseif ( ! empty( $relative_url_parts['path'] ) ) { + // Strip off any file components from the absolute path + $path = substr( $path, 0, strrpos( $path, '/' ) + 1 ); + + // Build the new path + $path .= $relative_url_parts['path']; + + // Strip all /path/../ out of the path + while ( strpos( $path, '../' ) > 1 ) { + $path = preg_replace( '![^/]+/\.\./!', '', $path ); + } + + // Strip any final leading ../ from the path + $path = preg_replace( '!^/(\.\./)+!', '', $path ); + } + + // Add the Query string + if ( ! empty( $relative_url_parts['query'] ) ) + $path .= '?' . $relative_url_parts['query']; + + return $absolute_path . '/' . ltrim( $path, '/' ); + } + + /** + * Handles HTTP Redirects and follows them if appropriate. + * + * @since 3.7.0 + * + * @param string $url The URL which was requested. + * @param array $args The Arguements which were used to make the request. + * @param array $response The Response of the HTTP request. + * @return false|object False if no redirect is present, a WP_HTTP or WP_Error result otherwise. + */ + static function handle_redirects( $url, $args, $response ) { + // If no redirects are present, or, redirects were not requested, perform no action. + if ( ! isset( $response['headers']['location'] ) || 0 === $args['_redirection'] ) + return false; + + // Only perform redirections on redirection http codes + if ( $response['response']['code'] > 399 || $response['response']['code'] < 300 ) + return false; + + // Don't redirect if we've run out of redirects + if ( $args['redirection']-- <= 0 ) + return new WP_Error( 'http_request_failed', __('Too many redirects.') ); + + $redirect_location = $response['headers']['location']; + + // If there were multiple Location headers, use the last header specified + if ( is_array( $redirect_location ) ) + $redirect_location = array_pop( $redirect_location ); + + $redirect_location = WP_HTTP::make_absolute_url( $redirect_location, $url ); + + // POST requests should not POST to a redirected location + if ( 'POST' == $args['method'] ) { + if ( in_array( $response['response']['code'], array( 302, 303 ) ) ) + $args['method'] = 'GET'; + } + + // Include valid cookies in the redirect process + if ( ! empty( $response['cookies'] ) ) { + foreach ( $response['cookies'] as $cookie ) { + if ( $cookie->test( $redirect_location ) ) + $args['cookies'][] = $cookie; + } + } + + return wp_remote_request( $redirect_location, $args ); + } + + /** + * Determines if a specified string represents an IP address or not. + * + * This function also detects the type of the IP address, returning either + * '4' or '6' to represent a IPv4 and IPv6 address respectively. + * This does not verify if the IP is a valid IP, only that it appears to be + * an IP address. + * + * @see http://home.deds.nl/~aeron/regex/ for IPv6 regex + * + * @since 3.7.0 + * @static + * + * @param string $maybe_ip A suspected IP address + * @return integer|bool Upon success, '4' or '6' to represent a IPv4 or IPv6 address, false upon failure + */ + static function is_ip_address( $maybe_ip ) { + if ( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $maybe_ip ) ) + return 4; + + if ( false !== strpos( $maybe_ip, ':' ) && preg_match( '/^(((?=.*(::))(?!.*\3.+\3))\3?|([\dA-F]{1,4}(\3|:\b|$)|\2))(?4){5}((?4){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i', trim( $maybe_ip, ' []' ) ) ) + return 6; + + return false; + } + +} + +/** + * HTTP request method uses PHP Streams to retrieve the url. + * + * @package WordPress + * @subpackage HTTP + * + * @since 2.7.0 + * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client(). + */ +class WP_Http_Streams { + /** + * Send a HTTP request to a URI using PHP Streams. + * + * @see WP_Http::request For default options descriptions. + * + * @since 2.7.0 + * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client(). + * + * @access public + * @param string $url URI resource. + * @param string|array $args Optional. Override the defaults. + * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys. + */ + function request($url, $args = array()) { + $defaults = array( + 'method' => 'GET', 'timeout' => 5, + 'redirection' => 5, 'httpversion' => '1.0', + 'blocking' => true, + 'headers' => array(), 'body' => null, 'cookies' => array() + ); + + $r = wp_parse_args( $args, $defaults ); + + if ( isset($r['headers']['User-Agent']) ) { + $r['user-agent'] = $r['headers']['User-Agent']; + unset($r['headers']['User-Agent']); + } else if ( isset($r['headers']['user-agent']) ) { + $r['user-agent'] = $r['headers']['user-agent']; + unset($r['headers']['user-agent']); + } + + // Construct Cookie: header if any cookies are set + WP_Http::buildCookieHeader( $r ); + + $arrURL = parse_url($url); + + $connect_host = $arrURL['host']; + + $secure_transport = ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ); + if ( ! isset( $arrURL['port'] ) ) { + if ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ) { + $arrURL['port'] = 443; + $secure_transport = true; + } else { + $arrURL['port'] = 80; + } + } + + if ( isset( $r['headers']['Host'] ) || isset( $r['headers']['host'] ) ) { + if ( isset( $r['headers']['Host'] ) ) + $arrURL['host'] = $r['headers']['Host']; + else + $arrURL['host'] = $r['headers']['host']; + unset( $r['headers']['Host'], $r['headers']['host'] ); + } + + // Certain versions of PHP have issues with 'localhost' and IPv6, It attempts to connect to ::1, + // which fails when the server is not set up for it. For compatibility, always connect to the IPv4 address. + if ( 'localhost' == strtolower( $connect_host ) ) + $connect_host = '127.0.0.1'; + + $connect_host = $secure_transport ? 'ssl://' . $connect_host : 'tcp://' . $connect_host; + + $is_local = isset( $r['local'] ) && $r['local']; + $ssl_verify = isset( $r['sslverify'] ) && $r['sslverify']; + if ( $is_local ) + $ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify ); + elseif ( ! $is_local ) + $ssl_verify = apply_filters( 'https_ssl_verify', $ssl_verify ); + + $proxy = new WP_HTTP_Proxy(); + + $context = stream_context_create( array( + 'ssl' => array( + 'verify_peer' => $ssl_verify, + //'CN_match' => $arrURL['host'], // This is handled by self::verify_ssl_certificate() + 'capture_peer_cert' => $ssl_verify, + 'SNI_enabled' => true, + 'cafile' => $r['sslcertificates'], + 'allow_self_signed' => ! $ssl_verify, + ) + ) ); + + $timeout = (int) floor( $r['timeout'] ); + $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000; + $connect_timeout = max( $timeout, 1 ); + + $connection_error = null; // Store error number + $connection_error_str = null; // Store error string + + if ( !WP_DEBUG ) { + // In the event that the SSL connection fails, silence the many PHP Warnings + if ( $secure_transport ) + $error_reporting = error_reporting(0); + + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) + $handle = @stream_socket_client( 'tcp://' . $proxy->host() . ':' . $proxy->port(), $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context ); + else + $handle = @stream_socket_client( $connect_host . ':' . $arrURL['port'], $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context ); + + if ( $secure_transport ) + error_reporting( $error_reporting ); + + } else { + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) + $handle = stream_socket_client( 'tcp://' . $proxy->host() . ':' . $proxy->port(), $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context ); + else + $handle = stream_socket_client( $connect_host . ':' . $arrURL['port'], $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context ); + } + + if ( false === $handle ) { + // SSL connection failed due to expired/invalid cert, or, OpenSSL configuration is broken + if ( $secure_transport && 0 === $connection_error && '' === $connection_error_str ) + return new WP_Error( 'http_request_failed', __( 'The SSL certificate for the host could not be verified.' ) ); + + return new WP_Error('http_request_failed', $connection_error . ': ' . $connection_error_str ); + } + + // Verify that the SSL certificate is valid for this request + if ( $secure_transport && $ssl_verify && ! $proxy->is_enabled() ) { + if ( ! self::verify_ssl_certificate( $handle, $arrURL['host'] ) ) + return new WP_Error( 'http_request_failed', __( 'The SSL certificate for the host could not be verified.' ) ); + } + + stream_set_timeout( $handle, $timeout, $utimeout ); + + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) //Some proxies require full URL in this field. + $requestPath = $url; + else + $requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' ); + + if ( empty($requestPath) ) + $requestPath .= '/'; + + $strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n"; + + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) + $strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n"; + else + $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n"; + + if ( isset($r['user-agent']) ) + $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n"; + + if ( is_array($r['headers']) ) { + foreach ( (array) $r['headers'] as $header => $headerValue ) + $strHeaders .= $header . ': ' . $headerValue . "\r\n"; + } else { + $strHeaders .= $r['headers']; + } + + if ( $proxy->use_authentication() ) + $strHeaders .= $proxy->authentication_header() . "\r\n"; + + $strHeaders .= "\r\n"; + + if ( ! is_null($r['body']) ) + $strHeaders .= $r['body']; + + fwrite($handle, $strHeaders); + + if ( ! $r['blocking'] ) { + stream_set_blocking( $handle, 0 ); + fclose( $handle ); + return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); + } + + $strResponse = ''; + $bodyStarted = false; + $keep_reading = true; + $block_size = 4096; + if ( isset( $r['limit_response_size'] ) ) + $block_size = min( $block_size, $r['limit_response_size'] ); + + // If streaming to a file setup the file handle + if ( $r['stream'] ) { + if ( ! WP_DEBUG ) + $stream_handle = @fopen( $r['filename'], 'w+' ); + else + $stream_handle = fopen( $r['filename'], 'w+' ); + if ( ! $stream_handle ) + return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) ); + + $bytes_written = 0; + while ( ! feof($handle) && $keep_reading ) { + $block = fread( $handle, $block_size ); + if ( ! $bodyStarted ) { + $strResponse .= $block; + if ( strpos( $strResponse, "\r\n\r\n" ) ) { + $process = WP_Http::processResponse( $strResponse ); + $bodyStarted = true; + $block = $process['body']; + unset( $strResponse ); + $process['body'] = ''; + } + } + + $this_block_size = strlen( $block ); + + if ( isset( $r['limit_response_size'] ) && ( $bytes_written + $this_block_size ) > $r['limit_response_size'] ) + $block = substr( $block, 0, ( $r['limit_response_size'] - $bytes_written ) ); + + $bytes_written_to_file = fwrite( $stream_handle, $block ); + + if ( $bytes_written_to_file != $this_block_size ) { + fclose( $handle ); + fclose( $stream_handle ); + return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) ); + } + + $bytes_written += $bytes_written_to_file; + + $keep_reading = !isset( $r['limit_response_size'] ) || $bytes_written < $r['limit_response_size']; + } + + fclose( $stream_handle ); + + } else { + $header_length = 0; + while ( ! feof( $handle ) && $keep_reading ) { + $block = fread( $handle, $block_size ); + $strResponse .= $block; + if ( ! $bodyStarted && strpos( $strResponse, "\r\n\r\n" ) ) { + $header_length = strpos( $strResponse, "\r\n\r\n" ) + 4; + $bodyStarted = true; + } + $keep_reading = ( ! $bodyStarted || !isset( $r['limit_response_size'] ) || strlen( $strResponse ) < ( $header_length + $r['limit_response_size'] ) ); + } + + $process = WP_Http::processResponse( $strResponse ); + unset( $strResponse ); + + } + + fclose( $handle ); + + $arrHeaders = WP_Http::processHeaders( $process['headers'], $url ); + + $response = array( + 'headers' => $arrHeaders['headers'], + 'body' => null, // Not yet processed + 'response' => $arrHeaders['response'], + 'cookies' => $arrHeaders['cookies'], + 'filename' => $r['filename'] + ); + + // Handle redirects + if ( false !== ( $redirect_response = WP_HTTP::handle_redirects( $url, $r, $response ) ) ) + return $redirect_response; + + // If the body was chunk encoded, then decode it. + if ( ! empty( $process['body'] ) && isset( $arrHeaders['headers']['transfer-encoding'] ) && 'chunked' == $arrHeaders['headers']['transfer-encoding'] ) + $process['body'] = WP_Http::chunkTransferDecode($process['body']); + + if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($arrHeaders['headers']) ) + $process['body'] = WP_Http_Encoding::decompress( $process['body'] ); + + if ( isset( $r['limit_response_size'] ) && strlen( $process['body'] ) > $r['limit_response_size'] ) + $process['body'] = substr( $process['body'], 0, $r['limit_response_size'] ); + + $response['body'] = $process['body']; + + return $response; + } + + /** + * Verifies the received SSL certificate against it's Common Names and subjectAltName fields + * + * PHP's SSL verifications only verify that it's a valid Certificate, it doesn't verify if + * the certificate is valid for the hostname which was requested. + * This function verifies the requested hostname against certificate's subjectAltName field, + * if that is empty, or contains no DNS entries, a fallback to the Common Name field is used. + * + * IP Address support is included if the request is being made to an IP address. + * + * @since 3.7.0 + * @static + * + * @param stream $stream The PHP Stream which the SSL request is being made over + * @param string $host The hostname being requested + * @return bool If the cerficiate presented in $stream is valid for $host + */ + static function verify_ssl_certificate( $stream, $host ) { + $context_options = stream_context_get_options( $stream ); + + if ( empty( $context_options['ssl']['peer_certificate'] ) ) + return false; + + $cert = openssl_x509_parse( $context_options['ssl']['peer_certificate'] ); + if ( ! $cert ) + return false; + + // If the request is being made to an IP address, we'll validate against IP fields in the cert (if they exist) + $host_type = ( WP_HTTP::is_ip_address( $host ) ? 'ip' : 'dns' ); + + $certificate_hostnames = array(); + if ( ! empty( $cert['extensions']['subjectAltName'] ) ) { + $match_against = preg_split( '/,\s*/', $cert['extensions']['subjectAltName'] ); + foreach ( $match_against as $match ) { + list( $match_type, $match_host ) = explode( ':', $match ); + if ( $host_type == strtolower( trim( $match_type ) ) ) // IP: or DNS: + $certificate_hostnames[] = strtolower( trim( $match_host ) ); + } + } elseif ( !empty( $cert['subject']['CN'] ) ) { + // Only use the CN when the certificate includes no subjectAltName extension + $certificate_hostnames[] = strtolower( $cert['subject']['CN'] ); + } + + // Exact hostname/IP matches + if ( in_array( strtolower( $host ), $certificate_hostnames ) ) + return true; + + // IP's can't be wildcards, Stop processing + if ( 'ip' == $host_type ) + return false; + + // Test to see if the domain is at least 2 deep for wildcard support + if ( substr_count( $host, '.' ) < 2 ) + return false; + + // Wildcard subdomains certs (*.example.com) are valid for a.example.com but not a.b.example.com + $wildcard_host = preg_replace( '/^[^.]+\./', '*.', $host ); + + return in_array( strtolower( $wildcard_host ), $certificate_hostnames ); + } + + /** + * Whether this class can be used for retrieving an URL. + * + * @static + * @access public + * @since 2.7.0 + * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client(). + * + * @return boolean False means this class can not be used, true means it can. + */ + public static function test( $args = array() ) { + if ( ! function_exists( 'stream_socket_client' ) ) + return false; + + $is_ssl = isset( $args['ssl'] ) && $args['ssl']; + + if ( $is_ssl ) { + if ( ! extension_loaded( 'openssl' ) ) + return false; + if ( ! function_exists( 'openssl_x509_parse' ) ) + return false; + } + + return apply_filters( 'use_streams_transport', true, $args ); + } +} + +/** + * Deprecated HTTP Transport method which used fsockopen. + * + * This class is not used, and is included for backwards compatibility only. + * All code should make use of WP_HTTP directly through it's API. + * + * @see WP_HTTP::request + * + * @package WordPress + * @subpackage HTTP + * + * @since 2.7.0 + * @deprecated 3.7.0 Please use WP_HTTP::request() directly + */ +class WP_HTTP_Fsockopen extends WP_HTTP_Streams { + // For backwards compatibility for users who are using the class directly +} + +/** + * HTTP request method uses Curl extension to retrieve the url. + * + * Requires the Curl extension to be installed. + * + * @package WordPress + * @subpackage HTTP + * @since 2.7.0 + */ +class WP_Http_Curl { + + /** + * Temporary header storage for during requests. + * + * @since 3.2.0 + * @access private + * @var string + */ + private $headers = ''; + + /** + * Temporary body storage for during requests. + * + * @since 3.6.0 + * @access private + * @var string + */ + private $body = ''; + + /** + * The maximum amount of data to recieve from the remote server + * + * @since 3.6.0 + * @access private + * @var int + */ + private $max_body_length = false; + + /** + * The file resource used for streaming to file. + * + * @since 3.6.0 + * @access private + * @var resource + */ + private $stream_handle = false; + + /** + * Send a HTTP request to a URI using cURL extension. + * + * @access public + * @since 2.7.0 + * + * @param string $url + * @param str|array $args Optional. Override the defaults. + * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys. + */ + function request($url, $args = array()) { + $defaults = array( + 'method' => 'GET', 'timeout' => 5, + 'redirection' => 5, 'httpversion' => '1.0', + 'blocking' => true, + 'headers' => array(), 'body' => null, 'cookies' => array() + ); + + $r = wp_parse_args( $args, $defaults ); + + if ( isset($r['headers']['User-Agent']) ) { + $r['user-agent'] = $r['headers']['User-Agent']; + unset($r['headers']['User-Agent']); + } else if ( isset($r['headers']['user-agent']) ) { + $r['user-agent'] = $r['headers']['user-agent']; + unset($r['headers']['user-agent']); + } + + // Construct Cookie: header if any cookies are set. + WP_Http::buildCookieHeader( $r ); + + $handle = curl_init(); + + // cURL offers really easy proxy support. + $proxy = new WP_HTTP_Proxy(); + + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) { + + curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP ); + curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() ); + curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() ); + + if ( $proxy->use_authentication() ) { + curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY ); + curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() ); + } + } + + $is_local = isset($r['local']) && $r['local']; + $ssl_verify = isset($r['sslverify']) && $r['sslverify']; + if ( $is_local ) + $ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify); + elseif ( ! $is_local ) + $ssl_verify = apply_filters('https_ssl_verify', $ssl_verify); + + // CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since + // a value of 0 will allow an unlimited timeout. + $timeout = (int) ceil( $r['timeout'] ); + curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, $timeout ); + curl_setopt( $handle, CURLOPT_TIMEOUT, $timeout ); + + curl_setopt( $handle, CURLOPT_URL, $url); + curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true ); + curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, ( $ssl_verify === true ) ? 2 : false ); + curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify ); + curl_setopt( $handle, CURLOPT_CAINFO, $r['sslcertificates'] ); + curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] ); + // The option doesn't work with safe mode or when open_basedir is set, and there's a + // bug #17490 with redirected POST requests, so handle redirections outside Curl. + curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, false ); + if ( defined( 'CURLOPT_PROTOCOLS' ) ) // PHP 5.2.10 / cURL 7.19.4 + curl_setopt( $handle, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS ); + + switch ( $r['method'] ) { + case 'HEAD': + curl_setopt( $handle, CURLOPT_NOBODY, true ); + break; + case 'POST': + curl_setopt( $handle, CURLOPT_POST, true ); + curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] ); + break; + case 'PUT': + curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, 'PUT' ); + curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] ); + break; + default: + curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, $r['method'] ); + if ( ! is_null( $r['body'] ) ) + curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] ); + break; + } + + if ( true === $r['blocking'] ) { + curl_setopt( $handle, CURLOPT_HEADERFUNCTION, array( $this, 'stream_headers' ) ); + curl_setopt( $handle, CURLOPT_WRITEFUNCTION, array( $this, 'stream_body' ) ); + } + + curl_setopt( $handle, CURLOPT_HEADER, false ); + + if ( isset( $r['limit_response_size'] ) ) + $this->max_body_length = intval( $r['limit_response_size'] ); + else + $this->max_body_length = false; + + // If streaming to a file open a file handle, and setup our curl streaming handler + if ( $r['stream'] ) { + if ( ! WP_DEBUG ) + $this->stream_handle = @fopen( $r['filename'], 'w+' ); + else + $this->stream_handle = fopen( $r['filename'], 'w+' ); + if ( ! $this->stream_handle ) + return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) ); + } else { + $this->stream_handle = false; + } + + if ( !empty( $r['headers'] ) ) { + // cURL expects full header strings in each element + $headers = array(); + foreach ( $r['headers'] as $name => $value ) { + $headers[] = "{$name}: $value"; + } + curl_setopt( $handle, CURLOPT_HTTPHEADER, $headers ); + } + + if ( $r['httpversion'] == '1.0' ) + curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0 ); + else + curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 ); + + // Cookies are not handled by the HTTP API currently. Allow for plugin authors to handle it + // themselves... Although, it is somewhat pointless without some reference. + do_action_ref_array( 'http_api_curl', array(&$handle) ); + + // We don't need to return the body, so don't. Just execute request and return. + if ( ! $r['blocking'] ) { + curl_exec( $handle ); + + if ( $curl_error = curl_error( $handle ) ) { + curl_close( $handle ); + return new WP_Error( 'http_request_failed', $curl_error ); + } + if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array( 301, 302 ) ) ) { + curl_close( $handle ); + return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) ); + } + + curl_close( $handle ); + return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); + } + + $theResponse = curl_exec( $handle ); + $theHeaders = WP_Http::processHeaders( $this->headers, $url ); + $theBody = $this->body; + + $this->headers = ''; + $this->body = ''; + + $curl_error = curl_errno( $handle ); + + // If an error occured, or, no response + if ( $curl_error || ( 0 == strlen( $theBody ) && empty( $theHeaders['headers'] ) ) ) { + if ( CURLE_WRITE_ERROR /* 23 */ == $curl_error && $r['stream'] ) { + fclose( $this->stream_handle ); + return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) ); + } + if ( $curl_error = curl_error( $handle ) ) { + curl_close( $handle ); + return new WP_Error( 'http_request_failed', $curl_error ); + } + if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array( 301, 302 ) ) ) { + curl_close( $handle ); + return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) ); + } + } + + $response = array(); + $response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE ); + $response['message'] = get_status_header_desc($response['code']); + + curl_close( $handle ); + + if ( $r['stream'] ) + fclose( $this->stream_handle ); + + $response = array( + 'headers' => $theHeaders['headers'], + 'body' => null, + 'response' => $response, + 'cookies' => $theHeaders['cookies'], + 'filename' => $r['filename'] + ); + + // Handle redirects + if ( false !== ( $redirect_response = WP_HTTP::handle_redirects( $url, $r, $response ) ) ) + return $redirect_response; + + if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) ) + $theBody = WP_Http_Encoding::decompress( $theBody ); + + $response['body'] = $theBody; + + return $response; + } + + /** + * Grab the headers of the cURL request + * + * Each header is sent individually to this callback, so we append to the $header property for temporary storage + * + * @since 3.2.0 + * @access private + * @return int + */ + private function stream_headers( $handle, $headers ) { + $this->headers .= $headers; + return strlen( $headers ); + } + + /** + * Grab the body of the cURL request + * + * The contents of the document are passed in chunks, so we append to the $body property for temporary storage. + * Returning a length shorter than the length of $data passed in will cause cURL to abort the request as "completed" + * + * @since 3.6.0 + * @access private + * @return int + */ + private function stream_body( $handle, $data ) { + $data_length = strlen( $data ); + + if ( $this->max_body_length && ( strlen( $this->body ) + $data_length ) > $this->max_body_length ) + $data = substr( $data, 0, ( $this->max_body_length - $data_length ) ); + + if ( $this->stream_handle ) { + $bytes_written = fwrite( $this->stream_handle, $data ); + } else { + $this->body .= $data; + $bytes_written = $data_length; + } + + // Upon event of this function returning less than strlen( $data ) curl will error with CURLE_WRITE_ERROR + return $bytes_written; + } + + /** + * Whether this class can be used for retrieving an URL. + * + * @static + * @since 2.7.0 + * + * @return boolean False means this class can not be used, true means it can. + */ + public static function test( $args = array() ) { + if ( ! function_exists( 'curl_init' ) || ! function_exists( 'curl_exec' ) ) + return false; + + $is_ssl = isset( $args['ssl'] ) && $args['ssl']; + + if ( $is_ssl ) { + $curl_version = curl_version(); + if ( ! (CURL_VERSION_SSL & $curl_version['features']) ) // Does this cURL version support SSL requests? + return false; + } + + return apply_filters( 'use_curl_transport', true, $args ); + } +} + +/** + * Adds Proxy support to the WordPress HTTP API. + * + * There are caveats to proxy support. It requires that defines be made in the wp-config.php file to + * enable proxy support. There are also a few filters that plugins can hook into for some of the + * constants. + * + * Please note that only BASIC authentication is supported by most transports. + * cURL MAY support more methods (such as NTLM authentication) depending on your environment. + * + * The constants are as follows: + *
    + *
  1. WP_PROXY_HOST - Enable proxy support and host for connecting.
    2. + *
  2. WP_PROXY_PORT - Proxy port for connection. No default, must be defined.
    3. + *
  3. WP_PROXY_USERNAME - Proxy username, if it requires authentication.
    4. + *
  4. WP_PROXY_PASSWORD - Proxy password, if it requires authentication.
    5. + *
  5. WP_PROXY_BYPASS_HOSTS - Will prevent the hosts in this list from going through the proxy. + * You do not need to have localhost and the blog host in this list, because they will not be passed + * through the proxy. The list should be presented in a comma separated list, wildcards using * are supported, eg. *.wordpress.org
    6. + *
+ * + * An example can be as seen below. + * + * define('WP_PROXY_HOST', '192.168.84.101'); + * define('WP_PROXY_PORT', '8080'); + * define('WP_PROXY_BYPASS_HOSTS', 'localhost, www.example.com, *.wordpress.org'); + * + * + * @link http://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress. + * @link http://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_PROXY_BYPASS_HOSTS + * @since 2.8 + */ +class WP_HTTP_Proxy { + + /** + * Whether proxy connection should be used. + * + * @since 2.8 + * @use WP_PROXY_HOST + * @use WP_PROXY_PORT + * + * @return bool + */ + function is_enabled() { + return defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT'); + } + + /** + * Whether authentication should be used. + * + * @since 2.8 + * @use WP_PROXY_USERNAME + * @use WP_PROXY_PASSWORD + * + * @return bool + */ + function use_authentication() { + return defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD'); + } + + /** + * Retrieve the host for the proxy server. + * + * @since 2.8 + * + * @return string + */ + function host() { + if ( defined('WP_PROXY_HOST') ) + return WP_PROXY_HOST; + + return ''; + } + + /** + * Retrieve the port for the proxy server. + * + * @since 2.8 + * + * @return string + */ + function port() { + if ( defined('WP_PROXY_PORT') ) + return WP_PROXY_PORT; + + return ''; + } + + /** + * Retrieve the username for proxy authentication. + * + * @since 2.8 + * + * @return string + */ + function username() { + if ( defined('WP_PROXY_USERNAME') ) + return WP_PROXY_USERNAME; + + return ''; + } + + /** + * Retrieve the password for proxy authentication. + * + * @since 2.8 + * + * @return string + */ + function password() { + if ( defined('WP_PROXY_PASSWORD') ) + return WP_PROXY_PASSWORD; + + return ''; + } + + /** + * Retrieve authentication string for proxy authentication. + * + * @since 2.8 + * + * @return string + */ + function authentication() { + return $this->username() . ':' . $this->password(); + } + + /** + * Retrieve header string for proxy authentication. + * + * @since 2.8 + * + * @return string + */ + function authentication_header() { + return 'Proxy-Authorization: Basic ' . base64_encode( $this->authentication() ); + } + + /** + * Whether URL should be sent through the proxy server. + * + * We want to keep localhost and the blog URL from being sent through the proxy server, because + * some proxies can not handle this. We also have the constant available for defining other + * hosts that won't be sent through the proxy. + * + * @uses WP_PROXY_BYPASS_HOSTS + * @since 2.8.0 + * + * @param string $uri URI to check. + * @return bool True, to send through the proxy and false if, the proxy should not be used. + */ + function send_through_proxy( $uri ) { + // parse_url() only handles http, https type URLs, and will emit E_WARNING on failure. + // This will be displayed on blogs, which is not reasonable. + $check = @parse_url($uri); + + // Malformed URL, can not process, but this could mean ssl, so let through anyway. + if ( $check === false ) + return true; + + $home = parse_url( get_option('siteurl') ); + + $result = apply_filters( 'pre_http_send_through_proxy', null, $uri, $check, $home ); + if ( ! is_null( $result ) ) + return $result; + + if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] ) + return false; + + if ( !defined('WP_PROXY_BYPASS_HOSTS') ) + return true; + + static $bypass_hosts; + static $wildcard_regex = false; + if ( null == $bypass_hosts ) { + $bypass_hosts = preg_split('|,\s*|', WP_PROXY_BYPASS_HOSTS); + + if ( false !== strpos(WP_PROXY_BYPASS_HOSTS, '*') ) { + $wildcard_regex = array(); + foreach ( $bypass_hosts as $host ) + $wildcard_regex[] = str_replace( '\*', '.+', preg_quote( $host, '/' ) ); + $wildcard_regex = '/^(' . implode('|', $wildcard_regex) . ')$/i'; + } + } + + if ( !empty($wildcard_regex) ) + return !preg_match($wildcard_regex, $check['host']); + else + return !in_array( $check['host'], $bypass_hosts ); + } +} +/** + * Internal representation of a single cookie. + * + * Returned cookies are represented using this class, and when cookies are set, if they are not + * already a WP_Http_Cookie() object, then they are turned into one. + * + * @todo The WordPress convention is to use underscores instead of camelCase for function and method + * names. Need to switch to use underscores instead for the methods. + * + * @package WordPress + * @subpackage HTTP + * @since 2.8.0 + */ +class WP_Http_Cookie { + + /** + * Cookie name. + * + * @since 2.8.0 + * @var string + */ + var $name; + + /** + * Cookie value. + * + * @since 2.8.0 + * @var string + */ + var $value; + + /** + * When the cookie expires. + * + * @since 2.8.0 + * @var string + */ + var $expires; + + /** + * Cookie URL path. + * + * @since 2.8.0 + * @var string + */ + var $path; + + /** + * Cookie Domain. + * + * @since 2.8.0 + * @var string + */ + var $domain; + + /** + * Sets up this cookie object. + * + * The parameter $data should be either an associative array containing the indices names below + * or a header string detailing it. + * + * If it's an array, it should include the following elements: + *
    + *
  1. Name
    2. + *
  2. Value - should NOT be urlencoded already.
    3. + *
  3. Expires - (optional) String or int (UNIX timestamp).
    4. + *
  4. Path (optional)
    5. + *
  5. Domain (optional)
    6. + *
  6. Port (optional)
    7. + *
+ * + * @access public + * @since 2.8.0 + * + * @param string|array $data Raw cookie data. + * @param string $requested_url The URL which the cookie was set on, used for default 'domain' and 'port' values + */ + function __construct( $data, $requested_url = '' ) { + if ( $requested_url ) + $arrURL = @parse_url( $requested_url ); + if ( isset( $arrURL['host'] ) ) + $this->domain = $arrURL['host']; + $this->path = isset( $arrURL['path'] ) ? $arrURL['path'] : '/'; + if ( '/' != substr( $this->path, -1 ) ) + $this->path = dirname( $this->path ) . '/'; + + if ( is_string( $data ) ) { + // Assume it's a header string direct from a previous request + $pairs = explode( ';', $data ); + + // Special handling for first pair; name=value. Also be careful of "=" in value + $name = trim( substr( $pairs[0], 0, strpos( $pairs[0], '=' ) ) ); + $value = substr( $pairs[0], strpos( $pairs[0], '=' ) + 1 ); + $this->name = $name; + $this->value = urldecode( $value ); + array_shift( $pairs ); //Removes name=value from items. + + // Set everything else as a property + foreach ( $pairs as $pair ) { + $pair = rtrim($pair); + if ( empty($pair) ) //Handles the cookie ending in ; which results in a empty final pair + continue; + + list( $key, $val ) = strpos( $pair, '=' ) ? explode( '=', $pair ) : array( $pair, '' ); + $key = strtolower( trim( $key ) ); + if ( 'expires' == $key ) + $val = strtotime( $val ); + $this->$key = $val; + } + } else { + if ( !isset( $data['name'] ) ) + return false; + + // Set properties based directly on parameters + foreach ( array( 'name', 'value', 'path', 'domain', 'port' ) as $field ) { + if ( isset( $data[ $field ] ) ) + $this->$field = $data[ $field ]; + } + + if ( isset( $data['expires'] ) ) + $this->expires = is_int( $data['expires'] ) ? $data['expires'] : strtotime( $data['expires'] ); + else + $this->expires = null; + } + } + + /** + * Confirms that it's OK to send this cookie to the URL checked against. + * + * Decision is based on RFC 2109/2965, so look there for details on validity. + * + * @access public + * @since 2.8.0 + * + * @param string $url URL you intend to send this cookie to + * @return boolean true if allowed, false otherwise. + */ + function test( $url ) { + if ( is_null( $this->name ) ) + return false; + + // Expires - if expired then nothing else matters + if ( isset( $this->expires ) && time() > $this->expires ) + return false; + + // Get details on the URL we're thinking about sending to + $url = parse_url( $url ); + $url['port'] = isset( $url['port'] ) ? $url['port'] : ( 'https' == $url['scheme'] ? 443 : 80 ); + $url['path'] = isset( $url['path'] ) ? $url['path'] : '/'; + + // Values to use for comparison against the URL + $path = isset( $this->path ) ? $this->path : '/'; + $port = isset( $this->port ) ? $this->port : null; + $domain = isset( $this->domain ) ? strtolower( $this->domain ) : strtolower( $url['host'] ); + if ( false === stripos( $domain, '.' ) ) + $domain .= '.local'; + + // Host - very basic check that the request URL ends with the domain restriction (minus leading dot) + $domain = substr( $domain, 0, 1 ) == '.' ? substr( $domain, 1 ) : $domain; + if ( substr( $url['host'], -strlen( $domain ) ) != $domain ) + return false; + + // Port - supports "port-lists" in the format: "80,8000,8080" + if ( !empty( $port ) && !in_array( $url['port'], explode( ',', $port) ) ) + return false; + + // Path - request path must start with path restriction + if ( substr( $url['path'], 0, strlen( $path ) ) != $path ) + return false; + + return true; + } + + /** + * Convert cookie name and value back to header string. + * + * @access public + * @since 2.8.0 + * + * @return string Header encoded cookie name and value. + */ + function getHeaderValue() { + if ( ! isset( $this->name ) || ! isset( $this->value ) ) + return ''; + + return $this->name . '=' . apply_filters( 'wp_http_cookie_value', $this->value, $this->name ); + } + + /** + * Retrieve cookie header for usage in the rest of the WordPress HTTP API. + * + * @access public + * @since 2.8.0 + * + * @return string + */ + function getFullHeader() { + return 'Cookie: ' . $this->getHeaderValue(); + } +} + +/** + * Implementation for deflate and gzip transfer encodings. + * + * Includes RFC 1950, RFC 1951, and RFC 1952. + * + * @since 2.8 + * @package WordPress + * @subpackage HTTP + */ +class WP_Http_Encoding { + + /** + * Compress raw string using the deflate format. + * + * Supports the RFC 1951 standard. + * + * @since 2.8 + * + * @param string $raw String to compress. + * @param int $level Optional, default is 9. Compression level, 9 is highest. + * @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports. + * @return string|bool False on failure. + */ + public static function compress( $raw, $level = 9, $supports = null ) { + return gzdeflate( $raw, $level ); + } + + /** + * Decompression of deflated string. + * + * Will attempt to decompress using the RFC 1950 standard, and if that fails + * then the RFC 1951 standard deflate will be attempted. Finally, the RFC + * 1952 standard gzip decode will be attempted. If all fail, then the + * original compressed string will be returned. + * + * @since 2.8 + * + * @param string $compressed String to decompress. + * @param int $length The optional length of the compressed data. + * @return string|bool False on failure. + */ + public static function decompress( $compressed, $length = null ) { + + if ( empty($compressed) ) + return $compressed; + + if ( false !== ( $decompressed = @gzinflate( $compressed ) ) ) + return $decompressed; + + if ( false !== ( $decompressed = WP_Http_Encoding::compatible_gzinflate( $compressed ) ) ) + return $decompressed; + + if ( false !== ( $decompressed = @gzuncompress( $compressed ) ) ) + return $decompressed; + + if ( function_exists('gzdecode') ) { + $decompressed = @gzdecode( $compressed ); + + if ( false !== $decompressed ) + return $decompressed; + } + + return $compressed; + } + + /** + * Decompression of deflated string while staying compatible with the majority of servers. + * + * Certain Servers will return deflated data with headers which PHP's gzinflate() + * function cannot handle out of the box. The following function has been created from + * various snippets on the gzinflate() PHP documentation. + * + * Warning: Magic numbers within. Due to the potential different formats that the compressed + * data may be returned in, some "magic offsets" are needed to ensure proper decompression + * takes place. For a simple progmatic way to determine the magic offset in use, see: + * http://core.trac.wordpress.org/ticket/18273 + * + * @since 2.8.1 + * @link http://core.trac.wordpress.org/ticket/18273 + * @link http://au2.php.net/manual/en/function.gzinflate.php#70875 + * @link http://au2.php.net/manual/en/function.gzinflate.php#77336 + * + * @param string $gzData String to decompress. + * @return string|bool False on failure. + */ + public static function compatible_gzinflate($gzData) { + + // Compressed data might contain a full header, if so strip it for gzinflate() + if ( substr($gzData, 0, 3) == "\x1f\x8b\x08" ) { + $i = 10; + $flg = ord( substr($gzData, 3, 1) ); + if ( $flg > 0 ) { + if ( $flg & 4 ) { + list($xlen) = unpack('v', substr($gzData, $i, 2) ); + $i = $i + 2 + $xlen; + } + if ( $flg & 8 ) + $i = strpos($gzData, "\0", $i) + 1; + if ( $flg & 16 ) + $i = strpos($gzData, "\0", $i) + 1; + if ( $flg & 2 ) + $i = $i + 2; + } + $decompressed = @gzinflate( substr($gzData, $i, -8) ); + if ( false !== $decompressed ) + return $decompressed; + } + + // Compressed data from java.util.zip.Deflater amongst others. + $decompressed = @gzinflate( substr($gzData, 2) ); + if ( false !== $decompressed ) + return $decompressed; + + return false; + } + + /** + * What encoding types to accept and their priority values. + * + * @since 2.8 + * + * @return string Types of encoding to accept. + */ + public static function accept_encoding( $url, $args ) { + $type = array(); + $compression_enabled = WP_Http_Encoding::is_available(); + + if ( ! $args['decompress'] ) // decompression specifically disabled + $compression_enabled = false; + elseif ( $args['stream'] ) // disable when streaming to file + $compression_enabled = false; + elseif ( isset( $args['limit_response_size'] ) ) // If only partial content is being requested, we won't be able to decompress it + $compression_enabled = false; + + if ( $compression_enabled ) { + if ( function_exists( 'gzinflate' ) ) + $type[] = 'deflate;q=1.0'; + + if ( function_exists( 'gzuncompress' ) ) + $type[] = 'compress;q=0.5'; + + if ( function_exists( 'gzdecode' ) ) + $type[] = 'gzip;q=0.5'; + } + + $type = apply_filters( 'wp_http_accept_encoding', $type, $url, $args ); + + return implode(', ', $type); + } + + /** + * What encoding the content used when it was compressed to send in the headers. + * + * @since 2.8 + * + * @return string Content-Encoding string to send in the header. + */ + public static function content_encoding() { + return 'deflate'; + } + + /** + * Whether the content be decoded based on the headers. + * + * @since 2.8 + * + * @param array|string $headers All of the available headers. + * @return bool + */ + public static function should_decode($headers) { + if ( is_array( $headers ) ) { + if ( array_key_exists('content-encoding', $headers) && ! empty( $headers['content-encoding'] ) ) + return true; + } else if ( is_string( $headers ) ) { + return ( stripos($headers, 'content-encoding:') !== false ); + } + + return false; + } + + /** + * Whether decompression and compression are supported by the PHP version. + * + * Each function is tested instead of checking for the zlib extension, to + * ensure that the functions all exist in the PHP version and aren't + * disabled. + * + * @since 2.8 + * + * @return bool + */ + public static function is_available() { + return ( function_exists('gzuncompress') || function_exists('gzdeflate') || function_exists('gzinflate') ); + } +}