- * Will eventually replace and standardize the WordPress HTTP requests made.
- *
- * @link http://trac.wordpress.org/ticket/4779 HTTP API Proposal
- *
- * @package WordPress
- * @subpackage HTTP
- * @since 2.7.0
- * @author Jacob Santos <wordpress@santosj.name>
- */
-
-/**
- * WordPress HTTP Class for managing HTTP Transports and making HTTP requests.
- *
- * This class is called for the functionality of making HTTP requests and should replace Snoopy
- * functionality, eventually. There is no available functionality to add HTTP transport
- * implementations, since most of the HTTP transports are added and available for use.
- *
- * The exception is that cURL is not available as a transport and lacking an implementation. It will
- * be added later and should be a patch on the WordPress Trac.
- *
- * There are no properties, because none are needed and for performance reasons. Some of the
- * functions are static and while they do have some overhead over functions in PHP4, the purpose is
- * maintainability. When PHP5 is finally the requirement, it will be easy to add the static keyword
- * to the code. It is not as easy to convert a function to a method after enough code uses the old
- * way.
- *
- * Debugging includes several actions, which pass different variables for debugging the HTTP API.
- *
- * <strong>http_transport_get_debug</strong> - gives working, nonblocking, and blocking transports.
- *
- * <strong>http_transport_post_debug</strong> - 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 Streams, HTTP Extension, 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];
- }
- }
-
- if ( has_filter('http_transport_get_debug') )
- 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];
- }
- }
-
- if ( has_filter('http_transport_post_debug') )
- 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
- *
- * @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 );
-
- $arrURL = parse_url($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() )
- $r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding();
-
- if ( is_null($r['body']) ) {
- // Some servers fail when sending content without the content-length
- // header being set.
- $r['headers']['Content-Length'] = 0;
- $transports = WP_Http::_getTransport($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']);
-
- $transports = WP_Http::_postTransport($r);
- }
-
- if ( has_action('http_api_debug') )
- 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);
-
- if ( has_action('http_api_debug') )
- do_action( 'http_api_debug', $response, 'response', get_class($transport) );
-
- if ( ! is_wp_error($response) )
- return $response;
- }
-
- 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 ) <US-ASCII SP, space (32)>, <US-ASCII HT, horizontal-tab (9)> (RFC 2616 2.2)
- $headers = preg_replace('/\n[ \t]/', ' ', $headers);
- // create the headers array
- $headers = explode("\n", $headers);
- }
-
- $response = array('code' => 0, 'message' => '');
-
- $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 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') || ( defined('WP_HTTP_BLOCK_EXTERNAL') && WP_HTTP_BLOCK_EXTERNAL == false ) )
- 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;
- }
- }
-
- // 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 ( !defined('WP_DEBUG') || ( defined('WP_DEBUG') && false === 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 . ': ' . $strError);
-
- stream_set_timeout($handle, $r['timeout'] );
-
- 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'] . ': ' . $arrHeaders['response']['message']);
-
- // If location is found, then assume redirect and redirect to location.
- if ( isset($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 ( !defined('WP_DEBUG') || ( defined('WP_DEBUG') && false === 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'), $url));
-
- stream_set_timeout($handle, $r['timeout'] );
-
- 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);
-
- 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);
-
- $processedHeaders = WP_Http::processHeaders($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;
-
- $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.