diff --git a/wp-includes/class-http.php b/wp-includes/class-http.php index 42b342c724..fb3d9747cf 100644 --- a/wp-includes/class-http.php +++ b/wp-includes/class-http.php @@ -1,1995 +1,1995 @@ -http_transport_get_debug - gives working, nonblocking, and blocking transports. - * - * http_transport_post_debug - gives working, nonblocking, and blocking transports. - * - * @package WordPress - * @subpackage HTTP - * @since 2.7.0 - */ -class WP_Http { - - /** - * PHP4 style Constructor - Calls PHP5 Style Constructor - * - * @since 2.7.0 - * @return WP_Http - */ - function WP_Http() { - $this->__construct(); - } - - /** - * PHP5 style Constructor - Setup available transport if not available. - * - * PHP4 does not have the 'self' keyword and since WordPress supports PHP4, - * the class needs to be used for the static call. - * - * The transport are setup to save time. This should only be called once, so - * the overhead should be fine. - * - * @since 2.7.0 - * @return WP_Http - */ - function __construct() { - WP_Http::_getTransport(); - WP_Http::_postTransport(); - } - - /** - * Tests the WordPress HTTP objects for an object to use and returns it. - * - * Tests all of the objects and returns the object that passes. Also caches - * that object to be used later. - * - * The order for the GET/HEAD requests are HTTP Extension, cURL, Streams, Fopen, - * and finally Fsockopen. fsockopen() is used last, because it has the most - * overhead in its implementation. There isn't any real way around it, since - * redirects have to be supported, much the same way the other transports - * also handle redirects. - * - * There are currently issues with "localhost" not resolving correctly with - * DNS. This may cause an error "failed to open stream: A connection attempt - * failed because the connected party did not properly respond after a - * period of time, or established connection failed because connected host - * has failed to respond." - * - * @since 2.7.0 - * @access private - * - * @param array $args Request args, default us an empty array - * @return object|null Null if no transports are available, HTTP transport object. - */ - function &_getTransport( $args = array() ) { - static $working_transport, $blocking_transport, $nonblocking_transport; - - if ( is_null($working_transport) ) { - if ( true === WP_Http_ExtHttp::test($args) ) { - $working_transport['exthttp'] = new WP_Http_ExtHttp(); - $blocking_transport[] = &$working_transport['exthttp']; - } else if ( true === WP_Http_Curl::test($args) ) { - $working_transport['curl'] = new WP_Http_Curl(); - $blocking_transport[] = &$working_transport['curl']; - } else if ( true === WP_Http_Streams::test($args) ) { - $working_transport['streams'] = new WP_Http_Streams(); - $blocking_transport[] = &$working_transport['streams']; - } else if ( true === WP_Http_Fopen::test($args) ) { - $working_transport['fopen'] = new WP_Http_Fopen(); - $blocking_transport[] = &$working_transport['fopen']; - } else if ( true === WP_Http_Fsockopen::test($args) ) { - $working_transport['fsockopen'] = new WP_Http_Fsockopen(); - $blocking_transport[] = &$working_transport['fsockopen']; - } - - foreach ( array('curl', 'streams', 'fopen', 'fsockopen', 'exthttp') as $transport ) { - if ( isset($working_transport[$transport]) ) - $nonblocking_transport[] = &$working_transport[$transport]; - } - } - - do_action( 'http_transport_get_debug', $working_transport, $blocking_transport, $nonblocking_transport ); - - if ( isset($args['blocking']) && !$args['blocking'] ) - return $nonblocking_transport; - else - return $blocking_transport; - } - - /** - * Tests the WordPress HTTP objects for an object to use and returns it. - * - * Tests all of the objects and returns the object that passes. Also caches - * that object to be used later. This is for posting content to a URL and - * is used when there is a body. The plain Fopen Transport can not be used - * to send content, but the streams transport can. This is a limitation that - * is addressed here, by just not including that transport. - * - * @since 2.7.0 - * @access private - * - * @param array $args Request args, default us an empty array - * @return object|null Null if no transports are available, HTTP transport object. - */ - function &_postTransport( $args = array() ) { - static $working_transport, $blocking_transport, $nonblocking_transport; - - if ( is_null($working_transport) ) { - if ( true === WP_Http_ExtHttp::test($args) ) { - $working_transport['exthttp'] = new WP_Http_ExtHttp(); - $blocking_transport[] = &$working_transport['exthttp']; - } else if ( true === WP_Http_Curl::test($args) ) { - $working_transport['curl'] = new WP_Http_Curl(); - $blocking_transport[] = &$working_transport['curl']; - } else if ( true === WP_Http_Streams::test($args) ) { - $working_transport['streams'] = new WP_Http_Streams(); - $blocking_transport[] = &$working_transport['streams']; - } else if ( true === WP_Http_Fsockopen::test($args) ) { - $working_transport['fsockopen'] = new WP_Http_Fsockopen(); - $blocking_transport[] = &$working_transport['fsockopen']; - } - - foreach ( array('curl', 'streams', 'fsockopen', 'exthttp') as $transport ) { - if ( isset($working_transport[$transport]) ) - $nonblocking_transport[] = &$working_transport[$transport]; - } - } - - do_action( 'http_transport_post_debug', $working_transport, $blocking_transport, $nonblocking_transport ); - - if ( isset($args['blocking']) && !$args['blocking'] ) - return $nonblocking_transport; - else - return $blocking_transport; - } - - /** - * 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. HTTP and HTTPS are assumed so the server might not know how to handle the send - * headers. Other protocols are unsupported and most likely will fail. - * - * 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. Version 1.1 is not supported, because of chunk response. 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. - * - * 'blocking' is the default, which is used to tell the transport, whether it should halt PHP - * while it performs the request or continue regardless. Actually, that isn't entirely correct. - * Blocking mode really just means whether the fread should just pull what it can whenever it - * gets bytes or if it should wait until it has enough in the buffer to read or finishes reading - * the entire content. It doesn't actually always mean that PHP will continue going after making - * the request. - * - * @access public - * @since 2.7.0 - * @todo Refactor this code. The code in this method extends the scope of its original purpose - * and should be refactored to allow for cleaner abstraction and reduce duplication of the - * code. One suggestion is to create a class specifically for the arguments, however - * preliminary refactoring to this affect has affect more than just the scope of the - * arguments. Something to ponder at least. - * - * @param string $url URI resource. - * @param str|array $args Optional. Override the defaults. - * @return array containing 'headers', 'body', 'response', 'cookies' - */ - 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' ) ), - 'blocking' => true, - 'headers' => array(), - 'cookies' => array(), - 'body' => null, - 'compress' => false, - 'decompress' => true, - 'sslverify' => true - ); - - $r = wp_parse_args( $args, $defaults ); - $r = apply_filters( 'http_request_args', $r, $url ); - - // Allow plugins to short-circuit the request - $pre = apply_filters( 'pre_http_request', false, $r, $url ); - if ( false !== $pre ) - return $pre; - - $arrURL = parse_url($url); - - 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 ( is_null( $r['headers'] ) ) - $r['headers'] = array(); - - if ( ! is_array($r['headers']) ) { - $processedHeaders = WP_Http::processHeaders($r['headers']); - $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']); - } - - // Construct Cookie: header if any cookies are set - WP_Http::buildCookieHeader( $r ); - - if ( WP_Http_Encoding::is_available() ) - $r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding(); - - if ( empty($r['body']) ) { - // Some servers fail when sending content without the content-length header being set. - // Also, to fix another bug, we only send when doing POST and PUT and the content-length - // header isn't already set. - if( ($r['method'] == 'POST' || $r['method'] == 'PUT') && ! isset($r['headers']['Content-Length']) ) - $r['headers']['Content-Length'] = 0; - - // The method is ambiguous, because we aren't talking about HTTP methods, the "get" in - // this case is simply that we aren't sending any bodies and to get the transports that - // don't support sending bodies along with those which do. - $transports = WP_Http::_getTransport($r); - } else { - if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) { - if ( ! version_compare(phpversion(), '5.1.2', '>=') ) - $r['body'] = _http_build_query($r['body'], null, '&'); - else - $r['body'] = http_build_query($r['body'], null, '&'); - $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset'); - $r['headers']['Content-Length'] = strlen($r['body']); - } - - if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) ) - $r['headers']['Content-Length'] = strlen($r['body']); - - // The method is ambiguous, because we aren't talking about HTTP methods, the "post" in - // this case is simply that we are sending HTTP body and to get the transports that do - // support sending the body. Not all do, depending on the limitations of the PHP core - // limitations. - $transports = WP_Http::_postTransport($r); - } - - do_action( 'http_api_debug', $transports, 'transports_list' ); - - $response = array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); - foreach ( (array) $transports as $transport ) { - $response = $transport->request($url, $r); - - do_action( 'http_api_debug', $response, 'response', get_class($transport) ); - - if ( ! is_wp_error($response) ) - return apply_filters( 'http_response', $response, $r, $url ); - } - - return $response; - } - - /** - * 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 $args Optional. Override the defaults. - * @return boolean - */ - function post($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 $args Optional. Override the defaults. - * @return boolean - */ - function get($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 $args Optional. Override the defaults. - * @return boolean - */ - function head($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 $strResponse The full response string - * @return array Array with 'headers' and 'body' keys. - */ - function processResponse($strResponse) { - list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2); - return array('headers' => $theHeaders, 'body' => $theBody); - } - - /** - * 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 $headers - * @return array Processed string headers. If duplicate headers are encountered, - * Then a numbered array is returned as the value of that header-key. - */ - function processHeaders($headers) { - // 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; $i-- ) { - if ( false === strpos($headers[$i], ':') ) { - $headers = array_splice($headers, $i); - break; - } - } - - $cookies = array(); - $newheaders = array(); - foreach ( $headers as $tempheader ) { - if ( empty($tempheader) ) - continue; - - if ( false === strpos($tempheader, ':') ) { - list( , $iResponseCode, $strResponseMsg) = explode(' ', $tempheader, 3); - $response['code'] = $iResponseCode; - $response['message'] = $strResponseMsg; - continue; - } - - list($key, $value) = explode(':', $tempheader, 2); - - if ( !empty( $value ) ) { - $key = strtolower( $key ); - if ( isset( $newheaders[$key] ) ) { - $newheaders[$key] = array( $newheaders[$key], trim( $value ) ); - } else { - $newheaders[$key] = trim( $value ); - } - if ( 'set-cookie' == strtolower( $key ) ) - $cookies[] = new WP_Http_Cookie( $value ); - } - } - - 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's assumed to contain WP_Http_Cookie objects, 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 $r Full array of args passed into ::request() - */ - function buildCookieHeader( &$r ) { - if ( ! empty($r['cookies']) ) { - $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. Does not support UTF-8. Does not support - * returning footer headers. Shouldn't be too difficult to support it though. - * - * @todo Add support for footer chunked headers. - * @access public - * @since 2.7.0 - * @static - * - * @param string $body Body content - * @return string Chunked decoded body on success or raw body on failure. - */ - function chunkTransferDecode($body) { - $body = str_replace(array("\r\n", "\r"), "\n", $body); - // The body is not chunked encoding or is malformed. - if ( ! preg_match( '/^[0-9a-f]+(\s|\n)+/mi', trim($body) ) ) - return $body; - - $parsedBody = ''; - //$parsedHeaders = array(); Unsupported - - while ( true ) { - $hasChunk = (bool) preg_match( '/^([0-9a-f]+)(\s|\n)+/mi', $body, $match ); - - if ( $hasChunk ) { - if ( empty( $match[1] ) ) - return $body; - - $length = hexdec( $match[1] ); - $chunkLength = strlen( $match[0] ); - - $strBody = substr($body, $chunkLength, $length); - $parsedBody .= $strBody; - - $body = ltrim(str_replace(array($match[0], $strBody), '', $body), "\n"); - - if ( "0" == trim($body) ) - return $parsedBody; // Ignore footer headers. - } else { - return $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. - * - * @since 2.8.0 - * @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests. - * - * @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; - - // 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. - * - * This isn't very security sound. There are instances where a hacker might attempt - * to bypass the proxy and this check. However, the reason for this behavior is that - * WordPress does not do any checking currently for non-proxy requests, so it is keeps with - * the default unsecure nature of the HTTP request. - */ - if ( $check === false ) - return false; - - $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; - if ( null == $accessible_hosts ) - $accessible_hosts = preg_split('|,\s*|', WP_ACCESSIBLE_HOSTS); - - return !in_array( $check['host'], $accessible_hosts ); //Inverse logic, If its in the array, then we can't access it. - } -} - -/** - * HTTP request method uses fsockopen function to retrieve the url. - * - * This would be the preferred method, but the fsockopen implementation has the most overhead of all - * the HTTP transport implementations. - * - * @package WordPress - * @subpackage HTTP - * @since 2.7.0 - */ -class WP_Http_Fsockopen { - /** - * Send a HTTP request to a URI using fsockopen(). - * - * Does not support non-blocking mode. - * - * @see WP_Http::request For default options descriptions. - * - * @since 2.7 - * @access public - * @param string $url URI resource. - * @param str|array $args Optional. Override the defaults. - * @return array 'headers', 'body', 'cookies' and 'response' keys. - */ - function request($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 ); - - $iError = null; // Store error number - $strError = null; // Store error string - - $arrURL = parse_url($url); - - $fsockopen_host = $arrURL['host']; - - $secure_transport = false; - - if ( ! isset( $arrURL['port'] ) ) { - if ( ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ) && extension_loaded('openssl') ) { - $fsockopen_host = "ssl://$fsockopen_host"; - $arrURL['port'] = 443; - $secure_transport = true; - } else { - $arrURL['port'] = 80; - } - } - - //fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1, - // which fails when the server is not setup for it. For compatibility, always connect to the IPv4 address. - if ( 'localhost' == strtolower($fsockopen_host) ) - $fsockopen_host = '127.0.0.1'; - - // There are issues with the HTTPS and SSL protocols that cause errors that can be safely - // ignored and should be ignored. - if ( true === $secure_transport ) - $error_reporting = error_reporting(0); - - $startDelay = time(); - - $proxy = new WP_HTTP_Proxy(); - - if ( !WP_DEBUG ) { - if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) - $handle = @fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] ); - else - $handle = @fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] ); - } else { - if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) - $handle = fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] ); - else - $handle = fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] ); - } - - $endDelay = time(); - - // If the delay is greater than the timeout then fsockopen should't be used, because it will - // cause a long delay. - $elapseDelay = ($endDelay-$startDelay) > $r['timeout']; - if ( true === $elapseDelay ) - add_option( 'disable_fsockopen', $endDelay, null, true ); - - if ( false === $handle ) - return new WP_Error('http_request_failed', $iError . ': ' . $strError); - - $timeout = (int) floor( $r['timeout'] ); - $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000; - 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 ( ! $r['blocking'] ) { - fclose($handle); - return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); - } - - $strResponse = ''; - while ( ! feof($handle) ) - $strResponse .= fread($handle, 4096); - - fclose($handle); - - if ( true === $secure_transport ) - error_reporting($error_reporting); - - $process = WP_Http::processResponse($strResponse); - $arrHeaders = WP_Http::processHeaders($process['headers']); - - // Is the response code within the 400 range? - if ( (int) $arrHeaders['response']['code'] >= 400 && (int) $arrHeaders['response']['code'] < 500 ) - return new WP_Error('http_request_failed', $arrHeaders['response']['code'] . ': ' . $arrHeaders['response']['message']); - - // If location is found, then assume redirect and redirect to location. - if ( 'HEAD' != $r['method'] && isset($arrHeaders['headers']['location']) ) { - if ( $r['redirection']-- > 0 ) { - return $this->request($arrHeaders['headers']['location'], $r); - } else { - return new WP_Error('http_request_failed', __('Too many redirects.')); - } - } - - // 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'] ); - - return array('headers' => $arrHeaders['headers'], 'body' => $process['body'], 'response' => $arrHeaders['response'], 'cookies' => $arrHeaders['cookies']); - } - - /** - * Whether this class can be used for retrieving an URL. - * - * @since 2.7.0 - * @static - * @return boolean False means this class can not be used, true means it can. - */ - function test( $args = array() ) { - if ( false !== ($option = get_option( 'disable_fsockopen' )) && time()-$option < 43200 ) // 12 hours - return false; - - $is_ssl = isset($args['ssl']) && $args['ssl']; - - if ( ! $is_ssl && function_exists( 'fsockopen' ) ) - $use = true; - elseif ( $is_ssl && extension_loaded('openssl') && function_exists( 'fsockopen' ) ) - $use = true; - else - $use = false; - - return apply_filters('use_fsockopen_transport', $use, $args); - } -} - -/** - * HTTP request method uses fopen function to retrieve the url. - * - * Requires PHP version greater than 4.3.0 for stream support. Does not allow for $context support, - * but should still be okay, to write the headers, before getting the response. Also requires that - * 'allow_url_fopen' to be enabled. - * - * @package WordPress - * @subpackage HTTP - * @since 2.7.0 - */ -class WP_Http_Fopen { - /** - * Send a HTTP request to a URI using fopen(). - * - * This transport does not support sending of headers and body, therefore should not be used in - * the instances, where there is a body and headers. - * - * Notes: Does not support non-blocking mode. Ignores 'redirection' option. - * - * @see WP_Http::retrieve For default options descriptions. - * - * @access public - * @since 2.7.0 - * - * @param string $url URI resource. - * @param str|array $args Optional. Override the defaults. - * @return array 'headers', 'body', 'cookies' and 'response' keys. - */ - function request($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 ); - - $arrURL = parse_url($url); - - if ( false === $arrURL ) - return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url)); - - if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] ) - $url = str_replace($arrURL['scheme'], 'http', $url); - - if ( is_null( $r['headers'] ) ) - $r['headers'] = array(); - - if ( is_string($r['headers']) ) { - $processedHeaders = WP_Http::processHeaders($r['headers']); - $r['headers'] = $processedHeaders['headers']; - } - - $initial_user_agent = ini_get('user_agent'); - - if ( !empty($r['headers']) && is_array($r['headers']) ) { - $user_agent_extra_headers = ''; - foreach ( $r['headers'] as $header => $value ) - $user_agent_extra_headers .= "\r\n$header: $value"; - @ini_set('user_agent', $r['user-agent'] . $user_agent_extra_headers); - } else { - @ini_set('user_agent', $r['user-agent']); - } - - if ( !WP_DEBUG ) - $handle = @fopen($url, 'r'); - else - $handle = fopen($url, 'r'); - - if (! $handle) - return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url)); - - $timeout = (int) floor( $r['timeout'] ); - $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000; - stream_set_timeout( $handle, $timeout, $utimeout ); - - if ( ! $r['blocking'] ) { - fclose($handle); - @ini_set('user_agent', $initial_user_agent); //Clean up any extra headers added - return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); - } - - $strResponse = ''; - while ( ! feof($handle) ) - $strResponse .= fread($handle, 4096); - - if ( function_exists('stream_get_meta_data') ) { - $meta = stream_get_meta_data($handle); - - $theHeaders = $meta['wrapper_data']; - if ( isset( $meta['wrapper_data']['headers'] ) ) - $theHeaders = $meta['wrapper_data']['headers']; - } else { - //$http_response_header is a PHP reserved variable which is set in the current-scope when using the HTTP Wrapper - //see http://php.oregonstate.edu/manual/en/reserved.variables.httpresponseheader.php - $theHeaders = $http_response_header; - } - - fclose($handle); - - @ini_set('user_agent', $initial_user_agent); //Clean up any extra headers added - - $processedHeaders = WP_Http::processHeaders($theHeaders); - - if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] ) - $strResponse = WP_Http::chunkTransferDecode($strResponse); - - if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) ) - $strResponse = WP_Http_Encoding::decompress( $strResponse ); - - return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies']); - } - - /** - * Whether this class can be used for retrieving an URL. - * - * @since 2.7.0 - * @static - * @return boolean False means this class can not be used, true means it can. - */ - function test($args = array()) { - if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) ) - return false; - - if ( isset($args['method']) && 'HEAD' == $args['method'] ) //This transport cannot make a HEAD request - return false; - - $use = true; - //PHP does not verify SSL certs, We can only make a request via this transports if SSL Verification is turned off. - $is_ssl = isset($args['ssl']) && $args['ssl']; - if ( $is_ssl ) { - $is_local = isset($args['local']) && $args['local']; - $ssl_verify = isset($args['sslverify']) && $args['sslverify']; - if ( $is_local && true != apply_filters('https_local_ssl_verify', true) ) - $use = true; - elseif ( !$is_local && true != apply_filters('https_ssl_verify', true) ) - $use = true; - elseif ( !$ssl_verify ) - $use = true; - else - $use = false; - } - - return apply_filters('use_fopen_transport', $use, $args); - } -} - -/** - * HTTP request method uses Streams to retrieve the url. - * - * Requires PHP 5.0+ and uses fopen with stream context. Requires that 'allow_url_fopen' PHP setting - * to be enabled. - * - * Second preferred method for getting the URL, for PHP 5. - * - * @package WordPress - * @subpackage HTTP - * @since 2.7.0 - */ -class WP_Http_Streams { - /** - * Send a HTTP request to a URI using streams with fopen(). - * - * @access public - * @since 2.7.0 - * - * @param string $url - * @param str|array $args Optional. Override the defaults. - * @return array 'headers', 'body', 'cookies' and 'response' keys. - */ - function request($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); - - if ( false === $arrURL ) - return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url)); - - if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] ) - $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url); - - // Convert Header array to string. - $strHeaders = ''; - if ( is_array( $r['headers'] ) ) - foreach ( $r['headers'] as $name => $value ) - $strHeaders .= "{$name}: $value\r\n"; - else if ( is_string( $r['headers'] ) ) - $strHeaders = $r['headers']; - - $is_local = isset($args['local']) && $args['local']; - $ssl_verify = isset($args['sslverify']) && $args['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); - - $arrContext = array('http' => - array( - 'method' => strtoupper($r['method']), - 'user_agent' => $r['user-agent'], - 'max_redirects' => $r['redirection'] + 1, // See #11557 - 'protocol_version' => (float) $r['httpversion'], - 'header' => $strHeaders, - 'ignore_errors' => true, // Return non-200 requests. - 'timeout' => $r['timeout'], - 'ssl' => array( - 'verify_peer' => $ssl_verify, - 'verify_host' => $ssl_verify - ) - ) - ); - - $proxy = new WP_HTTP_Proxy(); - - if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) { - $arrContext['http']['proxy'] = 'tcp://' . $proxy->host() . ':' . $proxy->port(); - $arrContext['http']['request_fulluri'] = true; - - // We only support Basic authentication so this will only work if that is what your proxy supports. - if ( $proxy->use_authentication() ) - $arrContext['http']['header'] .= $proxy->authentication_header() . "\r\n"; - } - - if ( 'HEAD' == $r['method'] ) // Disable redirects for HEAD requests - $arrContext['http']['max_redirects'] = 1; - - if ( ! empty($r['body'] ) ) - $arrContext['http']['content'] = $r['body']; - - $context = stream_context_create($arrContext); - - if ( !WP_DEBUG ) - $handle = @fopen($url, 'r', false, $context); - else - $handle = fopen($url, 'r', false, $context); - - if ( ! $handle ) - return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url)); - - $timeout = (int) floor( $r['timeout'] ); - $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000; - stream_set_timeout( $handle, $timeout, $utimeout ); - - if ( ! $r['blocking'] ) { - stream_set_blocking($handle, 0); - fclose($handle); - return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); - } - - $strResponse = stream_get_contents($handle); - $meta = stream_get_meta_data($handle); - - fclose($handle); - - $processedHeaders = array(); - if ( isset( $meta['wrapper_data']['headers'] ) ) - $processedHeaders = WP_Http::processHeaders($meta['wrapper_data']['headers']); - else - $processedHeaders = WP_Http::processHeaders($meta['wrapper_data']); - - if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] ) - $strResponse = WP_Http::chunkTransferDecode($strResponse); - - if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) ) - $strResponse = WP_Http_Encoding::decompress( $strResponse ); - - return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies']); - } - - /** - * Whether this class can be used for retrieving an URL. - * - * @static - * @access public - * @since 2.7.0 - * - * @return boolean False means this class can not be used, true means it can. - */ - function test($args = array()) { - if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) ) - return false; - - if ( version_compare(PHP_VERSION, '5.0', '<') ) - return false; - - //HTTPS via Proxy was added in 5.1.0 - $is_ssl = isset($args['ssl']) && $args['ssl']; - if ( $is_ssl && version_compare(PHP_VERSION, '5.1.0', '<') ) { - $proxy = new WP_HTTP_Proxy(); - /** - * No URL check, as its not currently passed to the ::test() function - * In the case where a Proxy is in use, Just bypass this transport for HTTPS. - */ - if ( $proxy->is_enabled() ) - return false; - } - - return apply_filters('use_streams_transport', true, $args); - } -} - -/** - * HTTP request method uses HTTP extension to retrieve the url. - * - * Requires the HTTP extension to be installed. This would be the preferred transport since it can - * handle a lot of the problems that forces the others to use the HTTP version 1.0. Even if PHP 5.2+ - * is being used, it doesn't mean that the HTTP extension will be enabled. - * - * @package WordPress - * @subpackage HTTP - * @since 2.7.0 - */ -class WP_Http_ExtHTTP { - /** - * Send a HTTP request to a URI using HTTP extension. - * - * Does not support non-blocking. - * - * @access public - * @since 2.7 - * - * @param string $url - * @param str|array $args Optional. Override the defaults. - * @return array 'headers', 'body', 'cookies' and 'response' keys. - */ - function request($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 ); - - switch ( $r['method'] ) { - case 'POST': - $r['method'] = HTTP_METH_POST; - break; - case 'HEAD': - $r['method'] = HTTP_METH_HEAD; - break; - case 'PUT': - $r['method'] = HTTP_METH_PUT; - break; - case 'GET': - default: - $r['method'] = HTTP_METH_GET; - } - - $arrURL = parse_url($url); - - if ( 'http' != $arrURL['scheme'] || 'https' != $arrURL['scheme'] ) - $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url); - - $is_local = isset($args['local']) && $args['local']; - $ssl_verify = isset($args['sslverify']) && $args['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); - - $r['timeout'] = (int) ceil( $r['timeout'] ); - - $options = array( - 'timeout' => $r['timeout'], - 'connecttimeout' => $r['timeout'], - 'redirect' => $r['redirection'], - 'useragent' => $r['user-agent'], - 'headers' => $r['headers'], - 'ssl' => array( - 'verifypeer' => $ssl_verify, - 'verifyhost' => $ssl_verify - ) - ); - - if ( HTTP_METH_HEAD == $r['method'] ) - $options['redirect'] = 0; // Assumption: Docs seem to suggest that this means do not follow. Untested. - - // The HTTP extensions offers really easy proxy support. - $proxy = new WP_HTTP_Proxy(); - - if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) { - $options['proxyhost'] = $proxy->host(); - $options['proxyport'] = $proxy->port(); - $options['proxytype'] = HTTP_PROXY_HTTP; - - if ( $proxy->use_authentication() ) { - $options['proxyauth'] = $proxy->authentication(); - $options['proxyauthtype'] = HTTP_AUTH_BASIC; - } - } - - if ( !WP_DEBUG ) //Emits warning level notices for max redirects and timeouts - $strResponse = @http_request($r['method'], $url, $r['body'], $options, $info); - else - $strResponse = http_request($r['method'], $url, $r['body'], $options, $info); //Emits warning level notices for max redirects and timeouts - - // Error may still be set, Response may return headers or partial document, and error - // contains a reason the request was aborted, eg, timeout expired or max-redirects reached. - if ( false === $strResponse || ! empty($info['error']) ) - return new WP_Error('http_request_failed', $info['response_code'] . ': ' . $info['error']); - - if ( ! $r['blocking'] ) - return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); - - list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2); - $theHeaders = WP_Http::processHeaders($theHeaders); - - if ( ! empty( $theBody ) && isset( $theHeaders['headers']['transfer-encoding'] ) && 'chunked' == $theHeaders['headers']['transfer-encoding'] ) { - if ( !WP_DEBUG ) - $theBody = @http_chunked_decode($theBody); - else - $theBody = http_chunked_decode($theBody); - } - - if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) ) - $theBody = http_inflate( $theBody ); - - $theResponse = array(); - $theResponse['code'] = $info['response_code']; - $theResponse['message'] = get_status_header_desc($info['response_code']); - - return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $theResponse, 'cookies' => $theHeaders['cookies']); - } - - /** - * Whether this class can be used for retrieving an URL. - * - * @static - * @since 2.7.0 - * - * @return boolean False means this class can not be used, true means it can. - */ - function test($args = array()) { - return apply_filters('use_http_extension_transport', function_exists('http_request'), $args ); - } -} - -/** - * HTTP request method uses Curl extension to retrieve the url. - * - * Requires the Curl extension to be installed. - * - * @package WordPress - * @subpackage HTTP - * @since 2.7 - */ -class WP_Http_Curl { - - /** - * Send a HTTP request to a URI using cURL extension. - * - * @access public - * @since 2.7.0 - * - * @param string $url - * @param str|array $args Optional. Override the defaults. - * @return array 'headers', 'body', 'cookies' and 'response' keys. - */ - function request($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 ) ) { - - $isPHP5 = version_compare(PHP_VERSION, '5.0.0', '>='); - - if ( $isPHP5 ) { - curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP ); - curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() ); - curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() ); - } else { - curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() .':'. $proxy->port() ); - } - - if ( $proxy->use_authentication() ) { - if ( $isPHP5 ) - curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_BASIC ); - - curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() ); - } - } - - $is_local = isset($args['local']) && $args['local']; - $ssl_verify = isset($args['sslverify']) && $args['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 ulimited 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 ); - curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify ); - curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] ); - curl_setopt( $handle, CURLOPT_MAXREDIRS, $r['redirection'] ); - - 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; - } - - if ( true === $r['blocking'] ) - curl_setopt( $handle, CURLOPT_HEADER, true ); - else - curl_setopt( $handle, CURLOPT_HEADER, false ); - - // The option doesn't work with safe mode or when open_basedir is set. - // Disable HEAD when making HEAD requests. - if ( !ini_get('safe_mode') && !ini_get('open_basedir') && 'HEAD' != $r['method'] ) - curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, true ); - - 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 ); - curl_close( $handle ); - return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); - } - - $theResponse = curl_exec( $handle ); - - if ( !empty($theResponse) ) { - $headerLength = curl_getinfo($handle, CURLINFO_HEADER_SIZE); - $theHeaders = trim( substr($theResponse, 0, $headerLength) ); - if ( strlen($theResponse) > $headerLength ) - $theBody = substr( $theResponse, $headerLength ); - else - $theBody = ''; - if ( false !== strrpos($theHeaders, "\r\n\r\n") ) { - $headerParts = explode("\r\n\r\n", $theHeaders); - $theHeaders = $headerParts[ count($headerParts) -1 ]; - } - $theHeaders = WP_Http::processHeaders($theHeaders); - } else { - if ( $curl_error = curl_error($handle) ) - return new WP_Error('http_request_failed', $curl_error); - if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array(301, 302) ) ) - return new WP_Error('http_request_failed', __('Too many redirects.')); - - $theHeaders = array( 'headers' => array(), 'cookies' => array() ); - $theBody = ''; - } - - $response = array(); - $response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE ); - $response['message'] = get_status_header_desc($response['code']); - - curl_close( $handle ); - - // See #11305 - When running under safe mode, redirection is disabled above. Handle it manually. - if ( !empty($theHeaders['headers']['location']) && (ini_get('safe_mode') || ini_get('open_basedir')) ) { - if ( $r['redirection']-- > 0 ) { - return $this->request($theHeaders['headers']['location'], $r); - } else { - return new WP_Error('http_request_failed', __('Too many redirects.')); - } - } - - if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) ) - $theBody = WP_Http_Encoding::decompress( $theBody ); - - return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $response, 'cookies' => $theHeaders['cookies']); - } - - /** - * Whether this class can be used for retrieving an URL. - * - * @static - * @since 2.7.0 - * - * @return boolean False means this class can not be used, true means it can. - */ - function test($args = array()) { - if ( function_exists('curl_init') && function_exists('curl_exec') ) - return apply_filters('use_curl_transport', true, $args); - - return false; - } -} - -/** - * 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. - * - * 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
    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'); - * - * - * @link http://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress. - * @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-Authentication: 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 unknown - * - * @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') ); - - if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] ) - return false; - - if ( !defined('WP_PROXY_BYPASS_HOSTS') ) - return true; - - static $bypass_hosts; - if ( null == $bypass_hosts ) - $bypass_hosts = preg_split('|,\s*|', WP_PROXY_BYPASS_HOSTS); - - 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; - - /** - * PHP4 style Constructor - Calls PHP5 Style Constructor. - * - * @access public - * @since 2.8.0 - * @param string|array $data Raw cookie data. - */ - function WP_Http_Cookie( $data ) { - $this->__construct( $data ); - } - - /** - * 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. - *
- * - * @access public - * @since 2.8.0 - * - * @param string|array $data Raw cookie data. - */ - function __construct( $data ) { - 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 $pair ) { - if ( empty($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 - $this->name = $data['name']; - $this->value = isset( $data['value'] ) ? $data['value'] : ''; - $this->path = isset( $data['path'] ) ? $data['path'] : ''; - $this->domain = isset( $data['domain'] ) ? $data['domain'] : ''; - - 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 ) { - // Expires - if expired then nothing else matters - if ( 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'] : 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 : 80; - $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 ( !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 ( empty( $this->name ) || empty( $this->value ) ) - return ''; - - return $this->name . '=' . urlencode( $this->value ); - } - - /** - * 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. - */ - 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. - */ - 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 gziniflate() - * function cannot handle out of the box. The following function lifted from - * http://au2.php.net/manual/en/function.gzinflate.php#77336 will attempt to deflate - * the various return forms used. - * - * @since 2.8.1 - * @link http://au2.php.net/manual/en/function.gzinflate.php#77336 - * - * @param string $gzData String to decompress. - * @return string|bool False on failure. - */ - function compatible_gzinflate($gzData) { - 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 = $i + 2; - } - return gzinflate( substr($gzData, $i, -8) ); - } else { - return false; - } - } - - /** - * What encoding types to accept and their priority values. - * - * @since 2.8 - * - * @return string Types of encoding to accept. - */ - function accept_encoding() { - $type = array(); - 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'; - - return implode(', ', $type); - } - - /** - * What enconding 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. - */ - function content_encoding() { - return 'deflate'; - } - - /** - * Whether the content be decoded based on the headers. - * - * @since 2.8 - * - * @param array|string $headers All of the available headers. - * @return bool - */ - function should_decode($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 - */ - function is_available() { - return ( function_exists('gzuncompress') || function_exists('gzdeflate') || function_exists('gzinflate') ); - } +http_transport_get_debug - gives working, nonblocking, and blocking transports. + * + * http_transport_post_debug - gives working, nonblocking, and blocking transports. + * + * @package WordPress + * @subpackage HTTP + * @since 2.7.0 + */ +class WP_Http { + + /** + * PHP4 style Constructor - Calls PHP5 Style Constructor + * + * @since 2.7.0 + * @return WP_Http + */ + function WP_Http() { + $this->__construct(); + } + + /** + * PHP5 style Constructor - Setup available transport if not available. + * + * PHP4 does not have the 'self' keyword and since WordPress supports PHP4, + * the class needs to be used for the static call. + * + * The transport are setup to save time. This should only be called once, so + * the overhead should be fine. + * + * @since 2.7.0 + * @return WP_Http + */ + function __construct() { + WP_Http::_getTransport(); + WP_Http::_postTransport(); + } + + /** + * Tests the WordPress HTTP objects for an object to use and returns it. + * + * Tests all of the objects and returns the object that passes. Also caches + * that object to be used later. + * + * The order for the GET/HEAD requests are HTTP Extension, cURL, Streams, Fopen, + * and finally Fsockopen. fsockopen() is used last, because it has the most + * overhead in its implementation. There isn't any real way around it, since + * redirects have to be supported, much the same way the other transports + * also handle redirects. + * + * There are currently issues with "localhost" not resolving correctly with + * DNS. This may cause an error "failed to open stream: A connection attempt + * failed because the connected party did not properly respond after a + * period of time, or established connection failed because connected host + * has failed to respond." + * + * @since 2.7.0 + * @access private + * + * @param array $args Request args, default us an empty array + * @return object|null Null if no transports are available, HTTP transport object. + */ + function &_getTransport( $args = array() ) { + static $working_transport, $blocking_transport, $nonblocking_transport; + + if ( is_null($working_transport) ) { + if ( true === WP_Http_ExtHttp::test($args) ) { + $working_transport['exthttp'] = new WP_Http_ExtHttp(); + $blocking_transport[] = &$working_transport['exthttp']; + } else if ( true === WP_Http_Curl::test($args) ) { + $working_transport['curl'] = new WP_Http_Curl(); + $blocking_transport[] = &$working_transport['curl']; + } else if ( true === WP_Http_Streams::test($args) ) { + $working_transport['streams'] = new WP_Http_Streams(); + $blocking_transport[] = &$working_transport['streams']; + } else if ( true === WP_Http_Fopen::test($args) ) { + $working_transport['fopen'] = new WP_Http_Fopen(); + $blocking_transport[] = &$working_transport['fopen']; + } else if ( true === WP_Http_Fsockopen::test($args) ) { + $working_transport['fsockopen'] = new WP_Http_Fsockopen(); + $blocking_transport[] = &$working_transport['fsockopen']; + } + + foreach ( array('curl', 'streams', 'fopen', 'fsockopen', 'exthttp') as $transport ) { + if ( isset($working_transport[$transport]) ) + $nonblocking_transport[] = &$working_transport[$transport]; + } + } + + do_action( 'http_transport_get_debug', $working_transport, $blocking_transport, $nonblocking_transport ); + + if ( isset($args['blocking']) && !$args['blocking'] ) + return $nonblocking_transport; + else + return $blocking_transport; + } + + /** + * Tests the WordPress HTTP objects for an object to use and returns it. + * + * Tests all of the objects and returns the object that passes. Also caches + * that object to be used later. This is for posting content to a URL and + * is used when there is a body. The plain Fopen Transport can not be used + * to send content, but the streams transport can. This is a limitation that + * is addressed here, by just not including that transport. + * + * @since 2.7.0 + * @access private + * + * @param array $args Request args, default us an empty array + * @return object|null Null if no transports are available, HTTP transport object. + */ + function &_postTransport( $args = array() ) { + static $working_transport, $blocking_transport, $nonblocking_transport; + + if ( is_null($working_transport) ) { + if ( true === WP_Http_ExtHttp::test($args) ) { + $working_transport['exthttp'] = new WP_Http_ExtHttp(); + $blocking_transport[] = &$working_transport['exthttp']; + } else if ( true === WP_Http_Curl::test($args) ) { + $working_transport['curl'] = new WP_Http_Curl(); + $blocking_transport[] = &$working_transport['curl']; + } else if ( true === WP_Http_Streams::test($args) ) { + $working_transport['streams'] = new WP_Http_Streams(); + $blocking_transport[] = &$working_transport['streams']; + } else if ( true === WP_Http_Fsockopen::test($args) ) { + $working_transport['fsockopen'] = new WP_Http_Fsockopen(); + $blocking_transport[] = &$working_transport['fsockopen']; + } + + foreach ( array('curl', 'streams', 'fsockopen', 'exthttp') as $transport ) { + if ( isset($working_transport[$transport]) ) + $nonblocking_transport[] = &$working_transport[$transport]; + } + } + + do_action( 'http_transport_post_debug', $working_transport, $blocking_transport, $nonblocking_transport ); + + if ( isset($args['blocking']) && !$args['blocking'] ) + return $nonblocking_transport; + else + return $blocking_transport; + } + + /** + * 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. HTTP and HTTPS are assumed so the server might not know how to handle the send + * headers. Other protocols are unsupported and most likely will fail. + * + * 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. Version 1.1 is not supported, because of chunk response. 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. + * + * 'blocking' is the default, which is used to tell the transport, whether it should halt PHP + * while it performs the request or continue regardless. Actually, that isn't entirely correct. + * Blocking mode really just means whether the fread should just pull what it can whenever it + * gets bytes or if it should wait until it has enough in the buffer to read or finishes reading + * the entire content. It doesn't actually always mean that PHP will continue going after making + * the request. + * + * @access public + * @since 2.7.0 + * @todo Refactor this code. The code in this method extends the scope of its original purpose + * and should be refactored to allow for cleaner abstraction and reduce duplication of the + * code. One suggestion is to create a class specifically for the arguments, however + * preliminary refactoring to this affect has affect more than just the scope of the + * arguments. Something to ponder at least. + * + * @param string $url URI resource. + * @param str|array $args Optional. Override the defaults. + * @return array containing 'headers', 'body', 'response', 'cookies' + */ + 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' ) ), + 'blocking' => true, + 'headers' => array(), + 'cookies' => array(), + 'body' => null, + 'compress' => false, + 'decompress' => true, + 'sslverify' => true + ); + + $r = wp_parse_args( $args, $defaults ); + $r = apply_filters( 'http_request_args', $r, $url ); + + // Allow plugins to short-circuit the request + $pre = apply_filters( 'pre_http_request', false, $r, $url ); + if ( false !== $pre ) + return $pre; + + $arrURL = parse_url($url); + + 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 ( is_null( $r['headers'] ) ) + $r['headers'] = array(); + + if ( ! is_array($r['headers']) ) { + $processedHeaders = WP_Http::processHeaders($r['headers']); + $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']); + } + + // Construct Cookie: header if any cookies are set + WP_Http::buildCookieHeader( $r ); + + if ( WP_Http_Encoding::is_available() ) + $r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding(); + + if ( empty($r['body']) ) { + // Some servers fail when sending content without the content-length header being set. + // Also, to fix another bug, we only send when doing POST and PUT and the content-length + // header isn't already set. + if( ($r['method'] == 'POST' || $r['method'] == 'PUT') && ! isset($r['headers']['Content-Length']) ) + $r['headers']['Content-Length'] = 0; + + // The method is ambiguous, because we aren't talking about HTTP methods, the "get" in + // this case is simply that we aren't sending any bodies and to get the transports that + // don't support sending bodies along with those which do. + $transports = WP_Http::_getTransport($r); + } else { + if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) { + if ( ! version_compare(phpversion(), '5.1.2', '>=') ) + $r['body'] = _http_build_query($r['body'], null, '&'); + else + $r['body'] = http_build_query($r['body'], null, '&'); + $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset'); + $r['headers']['Content-Length'] = strlen($r['body']); + } + + if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) ) + $r['headers']['Content-Length'] = strlen($r['body']); + + // The method is ambiguous, because we aren't talking about HTTP methods, the "post" in + // this case is simply that we are sending HTTP body and to get the transports that do + // support sending the body. Not all do, depending on the limitations of the PHP core + // limitations. + $transports = WP_Http::_postTransport($r); + } + + do_action( 'http_api_debug', $transports, 'transports_list' ); + + $response = array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); + foreach ( (array) $transports as $transport ) { + $response = $transport->request($url, $r); + + do_action( 'http_api_debug', $response, 'response', get_class($transport) ); + + if ( ! is_wp_error($response) ) + return apply_filters( 'http_response', $response, $r, $url ); + } + + return $response; + } + + /** + * 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 $args Optional. Override the defaults. + * @return boolean + */ + function post($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 $args Optional. Override the defaults. + * @return boolean + */ + function get($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 $args Optional. Override the defaults. + * @return boolean + */ + function head($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 $strResponse The full response string + * @return array Array with 'headers' and 'body' keys. + */ + function processResponse($strResponse) { + list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2); + return array('headers' => $theHeaders, 'body' => $theBody); + } + + /** + * 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 $headers + * @return array Processed string headers. If duplicate headers are encountered, + * Then a numbered array is returned as the value of that header-key. + */ + function processHeaders($headers) { + // 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; $i-- ) { + if ( false === strpos($headers[$i], ':') ) { + $headers = array_splice($headers, $i); + break; + } + } + + $cookies = array(); + $newheaders = array(); + foreach ( $headers as $tempheader ) { + if ( empty($tempheader) ) + continue; + + if ( false === strpos($tempheader, ':') ) { + list( , $iResponseCode, $strResponseMsg) = explode(' ', $tempheader, 3); + $response['code'] = $iResponseCode; + $response['message'] = $strResponseMsg; + continue; + } + + list($key, $value) = explode(':', $tempheader, 2); + + if ( !empty( $value ) ) { + $key = strtolower( $key ); + if ( isset( $newheaders[$key] ) ) { + $newheaders[$key] = array( $newheaders[$key], trim( $value ) ); + } else { + $newheaders[$key] = trim( $value ); + } + if ( 'set-cookie' == strtolower( $key ) ) + $cookies[] = new WP_Http_Cookie( $value ); + } + } + + 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's assumed to contain WP_Http_Cookie objects, 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 $r Full array of args passed into ::request() + */ + function buildCookieHeader( &$r ) { + if ( ! empty($r['cookies']) ) { + $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. Does not support UTF-8. Does not support + * returning footer headers. Shouldn't be too difficult to support it though. + * + * @todo Add support for footer chunked headers. + * @access public + * @since 2.7.0 + * @static + * + * @param string $body Body content + * @return string Chunked decoded body on success or raw body on failure. + */ + function chunkTransferDecode($body) { + $body = str_replace(array("\r\n", "\r"), "\n", $body); + // The body is not chunked encoding or is malformed. + if ( ! preg_match( '/^[0-9a-f]+(\s|\n)+/mi', trim($body) ) ) + return $body; + + $parsedBody = ''; + //$parsedHeaders = array(); Unsupported + + while ( true ) { + $hasChunk = (bool) preg_match( '/^([0-9a-f]+)(\s|\n)+/mi', $body, $match ); + + if ( $hasChunk ) { + if ( empty( $match[1] ) ) + return $body; + + $length = hexdec( $match[1] ); + $chunkLength = strlen( $match[0] ); + + $strBody = substr($body, $chunkLength, $length); + $parsedBody .= $strBody; + + $body = ltrim(str_replace(array($match[0], $strBody), '', $body), "\n"); + + if ( "0" == trim($body) ) + return $parsedBody; // Ignore footer headers. + } else { + return $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. + * + * @since 2.8.0 + * @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests. + * + * @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; + + // 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. + * + * This isn't very security sound. There are instances where a hacker might attempt + * to bypass the proxy and this check. However, the reason for this behavior is that + * WordPress does not do any checking currently for non-proxy requests, so it is keeps with + * the default unsecure nature of the HTTP request. + */ + if ( $check === false ) + return false; + + $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; + if ( null == $accessible_hosts ) + $accessible_hosts = preg_split('|,\s*|', WP_ACCESSIBLE_HOSTS); + + return !in_array( $check['host'], $accessible_hosts ); //Inverse logic, If its in the array, then we can't access it. + } +} + +/** + * HTTP request method uses fsockopen function to retrieve the url. + * + * This would be the preferred method, but the fsockopen implementation has the most overhead of all + * the HTTP transport implementations. + * + * @package WordPress + * @subpackage HTTP + * @since 2.7.0 + */ +class WP_Http_Fsockopen { + /** + * Send a HTTP request to a URI using fsockopen(). + * + * Does not support non-blocking mode. + * + * @see WP_Http::request For default options descriptions. + * + * @since 2.7 + * @access public + * @param string $url URI resource. + * @param str|array $args Optional. Override the defaults. + * @return array 'headers', 'body', 'cookies' and 'response' keys. + */ + function request($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 ); + + $iError = null; // Store error number + $strError = null; // Store error string + + $arrURL = parse_url($url); + + $fsockopen_host = $arrURL['host']; + + $secure_transport = false; + + if ( ! isset( $arrURL['port'] ) ) { + if ( ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ) && extension_loaded('openssl') ) { + $fsockopen_host = "ssl://$fsockopen_host"; + $arrURL['port'] = 443; + $secure_transport = true; + } else { + $arrURL['port'] = 80; + } + } + + //fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1, + // which fails when the server is not setup for it. For compatibility, always connect to the IPv4 address. + if ( 'localhost' == strtolower($fsockopen_host) ) + $fsockopen_host = '127.0.0.1'; + + // There are issues with the HTTPS and SSL protocols that cause errors that can be safely + // ignored and should be ignored. + if ( true === $secure_transport ) + $error_reporting = error_reporting(0); + + $startDelay = time(); + + $proxy = new WP_HTTP_Proxy(); + + if ( !WP_DEBUG ) { + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) + $handle = @fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] ); + else + $handle = @fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] ); + } else { + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) + $handle = fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] ); + else + $handle = fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] ); + } + + $endDelay = time(); + + // If the delay is greater than the timeout then fsockopen should't be used, because it will + // cause a long delay. + $elapseDelay = ($endDelay-$startDelay) > $r['timeout']; + if ( true === $elapseDelay ) + add_option( 'disable_fsockopen', $endDelay, null, true ); + + if ( false === $handle ) + return new WP_Error('http_request_failed', $iError . ': ' . $strError); + + $timeout = (int) floor( $r['timeout'] ); + $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000; + 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 ( ! $r['blocking'] ) { + fclose($handle); + return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); + } + + $strResponse = ''; + while ( ! feof($handle) ) + $strResponse .= fread($handle, 4096); + + fclose($handle); + + if ( true === $secure_transport ) + error_reporting($error_reporting); + + $process = WP_Http::processResponse($strResponse); + $arrHeaders = WP_Http::processHeaders($process['headers']); + + // Is the response code within the 400 range? + if ( (int) $arrHeaders['response']['code'] >= 400 && (int) $arrHeaders['response']['code'] < 500 ) + return new WP_Error('http_request_failed', $arrHeaders['response']['code'] . ': ' . $arrHeaders['response']['message']); + + // If location is found, then assume redirect and redirect to location. + if ( 'HEAD' != $r['method'] && isset($arrHeaders['headers']['location']) ) { + if ( $r['redirection']-- > 0 ) { + return $this->request($arrHeaders['headers']['location'], $r); + } else { + return new WP_Error('http_request_failed', __('Too many redirects.')); + } + } + + // 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'] ); + + return array('headers' => $arrHeaders['headers'], 'body' => $process['body'], 'response' => $arrHeaders['response'], 'cookies' => $arrHeaders['cookies']); + } + + /** + * Whether this class can be used for retrieving an URL. + * + * @since 2.7.0 + * @static + * @return boolean False means this class can not be used, true means it can. + */ + function test( $args = array() ) { + if ( false !== ($option = get_option( 'disable_fsockopen' )) && time()-$option < 43200 ) // 12 hours + return false; + + $is_ssl = isset($args['ssl']) && $args['ssl']; + + if ( ! $is_ssl && function_exists( 'fsockopen' ) ) + $use = true; + elseif ( $is_ssl && extension_loaded('openssl') && function_exists( 'fsockopen' ) ) + $use = true; + else + $use = false; + + return apply_filters('use_fsockopen_transport', $use, $args); + } +} + +/** + * HTTP request method uses fopen function to retrieve the url. + * + * Requires PHP version greater than 4.3.0 for stream support. Does not allow for $context support, + * but should still be okay, to write the headers, before getting the response. Also requires that + * 'allow_url_fopen' to be enabled. + * + * @package WordPress + * @subpackage HTTP + * @since 2.7.0 + */ +class WP_Http_Fopen { + /** + * Send a HTTP request to a URI using fopen(). + * + * This transport does not support sending of headers and body, therefore should not be used in + * the instances, where there is a body and headers. + * + * Notes: Does not support non-blocking mode. Ignores 'redirection' option. + * + * @see WP_Http::retrieve For default options descriptions. + * + * @access public + * @since 2.7.0 + * + * @param string $url URI resource. + * @param str|array $args Optional. Override the defaults. + * @return array 'headers', 'body', 'cookies' and 'response' keys. + */ + function request($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 ); + + $arrURL = parse_url($url); + + if ( false === $arrURL ) + return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url)); + + if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] ) + $url = str_replace($arrURL['scheme'], 'http', $url); + + if ( is_null( $r['headers'] ) ) + $r['headers'] = array(); + + if ( is_string($r['headers']) ) { + $processedHeaders = WP_Http::processHeaders($r['headers']); + $r['headers'] = $processedHeaders['headers']; + } + + $initial_user_agent = ini_get('user_agent'); + + if ( !empty($r['headers']) && is_array($r['headers']) ) { + $user_agent_extra_headers = ''; + foreach ( $r['headers'] as $header => $value ) + $user_agent_extra_headers .= "\r\n$header: $value"; + @ini_set('user_agent', $r['user-agent'] . $user_agent_extra_headers); + } else { + @ini_set('user_agent', $r['user-agent']); + } + + if ( !WP_DEBUG ) + $handle = @fopen($url, 'r'); + else + $handle = fopen($url, 'r'); + + if (! $handle) + return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url)); + + $timeout = (int) floor( $r['timeout'] ); + $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000; + stream_set_timeout( $handle, $timeout, $utimeout ); + + if ( ! $r['blocking'] ) { + fclose($handle); + @ini_set('user_agent', $initial_user_agent); //Clean up any extra headers added + return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); + } + + $strResponse = ''; + while ( ! feof($handle) ) + $strResponse .= fread($handle, 4096); + + if ( function_exists('stream_get_meta_data') ) { + $meta = stream_get_meta_data($handle); + + $theHeaders = $meta['wrapper_data']; + if ( isset( $meta['wrapper_data']['headers'] ) ) + $theHeaders = $meta['wrapper_data']['headers']; + } else { + //$http_response_header is a PHP reserved variable which is set in the current-scope when using the HTTP Wrapper + //see http://php.oregonstate.edu/manual/en/reserved.variables.httpresponseheader.php + $theHeaders = $http_response_header; + } + + fclose($handle); + + @ini_set('user_agent', $initial_user_agent); //Clean up any extra headers added + + $processedHeaders = WP_Http::processHeaders($theHeaders); + + if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] ) + $strResponse = WP_Http::chunkTransferDecode($strResponse); + + if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) ) + $strResponse = WP_Http_Encoding::decompress( $strResponse ); + + return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies']); + } + + /** + * Whether this class can be used for retrieving an URL. + * + * @since 2.7.0 + * @static + * @return boolean False means this class can not be used, true means it can. + */ + function test($args = array()) { + if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) ) + return false; + + if ( isset($args['method']) && 'HEAD' == $args['method'] ) //This transport cannot make a HEAD request + return false; + + $use = true; + //PHP does not verify SSL certs, We can only make a request via this transports if SSL Verification is turned off. + $is_ssl = isset($args['ssl']) && $args['ssl']; + if ( $is_ssl ) { + $is_local = isset($args['local']) && $args['local']; + $ssl_verify = isset($args['sslverify']) && $args['sslverify']; + if ( $is_local && true != apply_filters('https_local_ssl_verify', true) ) + $use = true; + elseif ( !$is_local && true != apply_filters('https_ssl_verify', true) ) + $use = true; + elseif ( !$ssl_verify ) + $use = true; + else + $use = false; + } + + return apply_filters('use_fopen_transport', $use, $args); + } +} + +/** + * HTTP request method uses Streams to retrieve the url. + * + * Requires PHP 5.0+ and uses fopen with stream context. Requires that 'allow_url_fopen' PHP setting + * to be enabled. + * + * Second preferred method for getting the URL, for PHP 5. + * + * @package WordPress + * @subpackage HTTP + * @since 2.7.0 + */ +class WP_Http_Streams { + /** + * Send a HTTP request to a URI using streams with fopen(). + * + * @access public + * @since 2.7.0 + * + * @param string $url + * @param str|array $args Optional. Override the defaults. + * @return array 'headers', 'body', 'cookies' and 'response' keys. + */ + function request($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); + + if ( false === $arrURL ) + return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url)); + + if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] ) + $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url); + + // Convert Header array to string. + $strHeaders = ''; + if ( is_array( $r['headers'] ) ) + foreach ( $r['headers'] as $name => $value ) + $strHeaders .= "{$name}: $value\r\n"; + else if ( is_string( $r['headers'] ) ) + $strHeaders = $r['headers']; + + $is_local = isset($args['local']) && $args['local']; + $ssl_verify = isset($args['sslverify']) && $args['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); + + $arrContext = array('http' => + array( + 'method' => strtoupper($r['method']), + 'user_agent' => $r['user-agent'], + 'max_redirects' => $r['redirection'] + 1, // See #11557 + 'protocol_version' => (float) $r['httpversion'], + 'header' => $strHeaders, + 'ignore_errors' => true, // Return non-200 requests. + 'timeout' => $r['timeout'], + 'ssl' => array( + 'verify_peer' => $ssl_verify, + 'verify_host' => $ssl_verify + ) + ) + ); + + $proxy = new WP_HTTP_Proxy(); + + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) { + $arrContext['http']['proxy'] = 'tcp://' . $proxy->host() . ':' . $proxy->port(); + $arrContext['http']['request_fulluri'] = true; + + // We only support Basic authentication so this will only work if that is what your proxy supports. + if ( $proxy->use_authentication() ) + $arrContext['http']['header'] .= $proxy->authentication_header() . "\r\n"; + } + + if ( 'HEAD' == $r['method'] ) // Disable redirects for HEAD requests + $arrContext['http']['max_redirects'] = 1; + + if ( ! empty($r['body'] ) ) + $arrContext['http']['content'] = $r['body']; + + $context = stream_context_create($arrContext); + + if ( !WP_DEBUG ) + $handle = @fopen($url, 'r', false, $context); + else + $handle = fopen($url, 'r', false, $context); + + if ( ! $handle ) + return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url)); + + $timeout = (int) floor( $r['timeout'] ); + $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000; + stream_set_timeout( $handle, $timeout, $utimeout ); + + if ( ! $r['blocking'] ) { + stream_set_blocking($handle, 0); + fclose($handle); + return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); + } + + $strResponse = stream_get_contents($handle); + $meta = stream_get_meta_data($handle); + + fclose($handle); + + $processedHeaders = array(); + if ( isset( $meta['wrapper_data']['headers'] ) ) + $processedHeaders = WP_Http::processHeaders($meta['wrapper_data']['headers']); + else + $processedHeaders = WP_Http::processHeaders($meta['wrapper_data']); + + if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] ) + $strResponse = WP_Http::chunkTransferDecode($strResponse); + + if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) ) + $strResponse = WP_Http_Encoding::decompress( $strResponse ); + + return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies']); + } + + /** + * Whether this class can be used for retrieving an URL. + * + * @static + * @access public + * @since 2.7.0 + * + * @return boolean False means this class can not be used, true means it can. + */ + function test($args = array()) { + if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) ) + return false; + + if ( version_compare(PHP_VERSION, '5.0', '<') ) + return false; + + //HTTPS via Proxy was added in 5.1.0 + $is_ssl = isset($args['ssl']) && $args['ssl']; + if ( $is_ssl && version_compare(PHP_VERSION, '5.1.0', '<') ) { + $proxy = new WP_HTTP_Proxy(); + /** + * No URL check, as its not currently passed to the ::test() function + * In the case where a Proxy is in use, Just bypass this transport for HTTPS. + */ + if ( $proxy->is_enabled() ) + return false; + } + + return apply_filters('use_streams_transport', true, $args); + } +} + +/** + * HTTP request method uses HTTP extension to retrieve the url. + * + * Requires the HTTP extension to be installed. This would be the preferred transport since it can + * handle a lot of the problems that forces the others to use the HTTP version 1.0. Even if PHP 5.2+ + * is being used, it doesn't mean that the HTTP extension will be enabled. + * + * @package WordPress + * @subpackage HTTP + * @since 2.7.0 + */ +class WP_Http_ExtHTTP { + /** + * Send a HTTP request to a URI using HTTP extension. + * + * Does not support non-blocking. + * + * @access public + * @since 2.7 + * + * @param string $url + * @param str|array $args Optional. Override the defaults. + * @return array 'headers', 'body', 'cookies' and 'response' keys. + */ + function request($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 ); + + switch ( $r['method'] ) { + case 'POST': + $r['method'] = HTTP_METH_POST; + break; + case 'HEAD': + $r['method'] = HTTP_METH_HEAD; + break; + case 'PUT': + $r['method'] = HTTP_METH_PUT; + break; + case 'GET': + default: + $r['method'] = HTTP_METH_GET; + } + + $arrURL = parse_url($url); + + if ( 'http' != $arrURL['scheme'] || 'https' != $arrURL['scheme'] ) + $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url); + + $is_local = isset($args['local']) && $args['local']; + $ssl_verify = isset($args['sslverify']) && $args['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); + + $r['timeout'] = (int) ceil( $r['timeout'] ); + + $options = array( + 'timeout' => $r['timeout'], + 'connecttimeout' => $r['timeout'], + 'redirect' => $r['redirection'], + 'useragent' => $r['user-agent'], + 'headers' => $r['headers'], + 'ssl' => array( + 'verifypeer' => $ssl_verify, + 'verifyhost' => $ssl_verify + ) + ); + + if ( HTTP_METH_HEAD == $r['method'] ) + $options['redirect'] = 0; // Assumption: Docs seem to suggest that this means do not follow. Untested. + + // The HTTP extensions offers really easy proxy support. + $proxy = new WP_HTTP_Proxy(); + + if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) { + $options['proxyhost'] = $proxy->host(); + $options['proxyport'] = $proxy->port(); + $options['proxytype'] = HTTP_PROXY_HTTP; + + if ( $proxy->use_authentication() ) { + $options['proxyauth'] = $proxy->authentication(); + $options['proxyauthtype'] = HTTP_AUTH_BASIC; + } + } + + if ( !WP_DEBUG ) //Emits warning level notices for max redirects and timeouts + $strResponse = @http_request($r['method'], $url, $r['body'], $options, $info); + else + $strResponse = http_request($r['method'], $url, $r['body'], $options, $info); //Emits warning level notices for max redirects and timeouts + + // Error may still be set, Response may return headers or partial document, and error + // contains a reason the request was aborted, eg, timeout expired or max-redirects reached. + if ( false === $strResponse || ! empty($info['error']) ) + return new WP_Error('http_request_failed', $info['response_code'] . ': ' . $info['error']); + + if ( ! $r['blocking'] ) + return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); + + list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2); + $theHeaders = WP_Http::processHeaders($theHeaders); + + if ( ! empty( $theBody ) && isset( $theHeaders['headers']['transfer-encoding'] ) && 'chunked' == $theHeaders['headers']['transfer-encoding'] ) { + if ( !WP_DEBUG ) + $theBody = @http_chunked_decode($theBody); + else + $theBody = http_chunked_decode($theBody); + } + + if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) ) + $theBody = http_inflate( $theBody ); + + $theResponse = array(); + $theResponse['code'] = $info['response_code']; + $theResponse['message'] = get_status_header_desc($info['response_code']); + + return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $theResponse, 'cookies' => $theHeaders['cookies']); + } + + /** + * Whether this class can be used for retrieving an URL. + * + * @static + * @since 2.7.0 + * + * @return boolean False means this class can not be used, true means it can. + */ + function test($args = array()) { + return apply_filters('use_http_extension_transport', function_exists('http_request'), $args ); + } +} + +/** + * HTTP request method uses Curl extension to retrieve the url. + * + * Requires the Curl extension to be installed. + * + * @package WordPress + * @subpackage HTTP + * @since 2.7 + */ +class WP_Http_Curl { + + /** + * Send a HTTP request to a URI using cURL extension. + * + * @access public + * @since 2.7.0 + * + * @param string $url + * @param str|array $args Optional. Override the defaults. + * @return array 'headers', 'body', 'cookies' and 'response' keys. + */ + function request($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 ) ) { + + $isPHP5 = version_compare(PHP_VERSION, '5.0.0', '>='); + + if ( $isPHP5 ) { + curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP ); + curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() ); + curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() ); + } else { + curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() .':'. $proxy->port() ); + } + + if ( $proxy->use_authentication() ) { + if ( $isPHP5 ) + curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_BASIC ); + + curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() ); + } + } + + $is_local = isset($args['local']) && $args['local']; + $ssl_verify = isset($args['sslverify']) && $args['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 ulimited 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 ); + curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify ); + curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] ); + curl_setopt( $handle, CURLOPT_MAXREDIRS, $r['redirection'] ); + + 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; + } + + if ( true === $r['blocking'] ) + curl_setopt( $handle, CURLOPT_HEADER, true ); + else + curl_setopt( $handle, CURLOPT_HEADER, false ); + + // The option doesn't work with safe mode or when open_basedir is set. + // Disable HEAD when making HEAD requests. + if ( !ini_get('safe_mode') && !ini_get('open_basedir') && 'HEAD' != $r['method'] ) + curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, true ); + + 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 ); + curl_close( $handle ); + return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() ); + } + + $theResponse = curl_exec( $handle ); + + if ( !empty($theResponse) ) { + $headerLength = curl_getinfo($handle, CURLINFO_HEADER_SIZE); + $theHeaders = trim( substr($theResponse, 0, $headerLength) ); + if ( strlen($theResponse) > $headerLength ) + $theBody = substr( $theResponse, $headerLength ); + else + $theBody = ''; + if ( false !== strrpos($theHeaders, "\r\n\r\n") ) { + $headerParts = explode("\r\n\r\n", $theHeaders); + $theHeaders = $headerParts[ count($headerParts) -1 ]; + } + $theHeaders = WP_Http::processHeaders($theHeaders); + } else { + if ( $curl_error = curl_error($handle) ) + return new WP_Error('http_request_failed', $curl_error); + if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array(301, 302) ) ) + return new WP_Error('http_request_failed', __('Too many redirects.')); + + $theHeaders = array( 'headers' => array(), 'cookies' => array() ); + $theBody = ''; + } + + $response = array(); + $response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE ); + $response['message'] = get_status_header_desc($response['code']); + + curl_close( $handle ); + + // See #11305 - When running under safe mode, redirection is disabled above. Handle it manually. + if ( !empty($theHeaders['headers']['location']) && (ini_get('safe_mode') || ini_get('open_basedir')) ) { + if ( $r['redirection']-- > 0 ) { + return $this->request($theHeaders['headers']['location'], $r); + } else { + return new WP_Error('http_request_failed', __('Too many redirects.')); + } + } + + if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) ) + $theBody = WP_Http_Encoding::decompress( $theBody ); + + return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $response, 'cookies' => $theHeaders['cookies']); + } + + /** + * Whether this class can be used for retrieving an URL. + * + * @static + * @since 2.7.0 + * + * @return boolean False means this class can not be used, true means it can. + */ + function test($args = array()) { + if ( function_exists('curl_init') && function_exists('curl_exec') ) + return apply_filters('use_curl_transport', true, $args); + + return false; + } +} + +/** + * 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. + * + * 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
    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'); + * + * + * @link http://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress. + * @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-Authentication: 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 unknown + * + * @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') ); + + if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] ) + return false; + + if ( !defined('WP_PROXY_BYPASS_HOSTS') ) + return true; + + static $bypass_hosts; + if ( null == $bypass_hosts ) + $bypass_hosts = preg_split('|,\s*|', WP_PROXY_BYPASS_HOSTS); + + 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; + + /** + * PHP4 style Constructor - Calls PHP5 Style Constructor. + * + * @access public + * @since 2.8.0 + * @param string|array $data Raw cookie data. + */ + function WP_Http_Cookie( $data ) { + $this->__construct( $data ); + } + + /** + * 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. + *
+ * + * @access public + * @since 2.8.0 + * + * @param string|array $data Raw cookie data. + */ + function __construct( $data ) { + 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 $pair ) { + if ( empty($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 + $this->name = $data['name']; + $this->value = isset( $data['value'] ) ? $data['value'] : ''; + $this->path = isset( $data['path'] ) ? $data['path'] : ''; + $this->domain = isset( $data['domain'] ) ? $data['domain'] : ''; + + 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 ) { + // Expires - if expired then nothing else matters + if ( 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'] : 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 : 80; + $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 ( !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 ( empty( $this->name ) || empty( $this->value ) ) + return ''; + + return $this->name . '=' . urlencode( $this->value ); + } + + /** + * 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. + */ + 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. + */ + 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 gziniflate() + * function cannot handle out of the box. The following function lifted from + * http://au2.php.net/manual/en/function.gzinflate.php#77336 will attempt to deflate + * the various return forms used. + * + * @since 2.8.1 + * @link http://au2.php.net/manual/en/function.gzinflate.php#77336 + * + * @param string $gzData String to decompress. + * @return string|bool False on failure. + */ + function compatible_gzinflate($gzData) { + 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 = $i + 2; + } + return gzinflate( substr($gzData, $i, -8) ); + } else { + return false; + } + } + + /** + * What encoding types to accept and their priority values. + * + * @since 2.8 + * + * @return string Types of encoding to accept. + */ + function accept_encoding() { + $type = array(); + 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'; + + return implode(', ', $type); + } + + /** + * What enconding 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. + */ + function content_encoding() { + return 'deflate'; + } + + /** + * Whether the content be decoded based on the headers. + * + * @since 2.8 + * + * @param array|string $headers All of the available headers. + * @return bool + */ + function should_decode($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 + */ + function is_available() { + return ( function_exists('gzuncompress') || function_exists('gzdeflate') || function_exists('gzinflate') ); + } } \ No newline at end of file