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/** * Simple and uniform HTTP request API. * * Standardizes the HTTP requests for WordPress. Handles cookies, gzip encoding and decoding, chunk * decoding, if HTTP 1.1 and various other difficult HTTP protocol implementations. * * @link http://trac.wordpress.org/ticket/4779 HTTP API Proposal * * @package WordPress * @subpackage HTTP * @since 2.7.0 */ /** * WordPress HTTP Class for managing HTTP Transports and making HTTP requests. * * This class is used to consistently make outgoing HTTP requests easy for developers * while still being compatible with the many PHP configurations under which * WordPress runs. * * Debugging includes several actions, which pass different variables for debugging the HTTP API. * * @package WordPress * @subpackage HTTP * @since 2.7.0 */ class WP_Http { /** * Send a HTTP request to a URI. * * The body and headers are part of the arguments. The 'body' argument is for the body and will * accept either a string or an array. The 'headers' argument should be an array, but a string * is acceptable. If the 'body' argument is an array, then it will automatically be escaped * using http_build_query(). * * The only URI that are supported in the HTTP Transport implementation are the HTTP and HTTPS * protocols. * * The defaults are 'method', 'timeout', 'redirection', 'httpversion', 'blocking' and * 'user-agent'. * * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports technically allow * others, but should not be assumed. The 'timeout' is used to sent how long the connection * should stay open before failing when no response. 'redirection' is used to track how many * redirects were taken and used to sent the amount for other transports, but not all transports * accept setting that value. * * The 'httpversion' option is used to sent the HTTP version and accepted values are '1.0', and * '1.1' and should be a string. The 'user-agent' option is the user-agent and is used to * replace the default user-agent, which is 'WordPress/WP_Version', where WP_Version is the * value from $wp_version. * * The 'blocking' parameter can be used to specify if the calling code requires the result of * the HTTP request. If set to false, the request will be sent to the remote server, and * processing returned to the calling code immediately, the caller will know if the request * suceeded or failed, but will not receive any response from the remote server. * * @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 request( $url, $args = array() ) { global $wp_version; $defaults = array( 'method' => '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. *
  3. WP_PROXY_PORT - Proxy port for connection. No default, must be defined.
  4. *
  5. WP_PROXY_USERNAME - Proxy username, if it requires authentication.
  6. *
  7. WP_PROXY_PASSWORD - Proxy password, if it requires authentication.
  8. *
  9. 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
  10. *
* * 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. *
  3. Value - should NOT be urlencoded already.
  4. *
  5. Expires - (optional) String or int (UNIX timestamp).
  6. *
  7. Path (optional)
  8. *
  9. Domain (optional)
  10. *
  11. Port (optional)
  12. *
* * @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') ); } } OTHER | Hostec

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