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<title>[13274] trunk/wp-includes: Split WP_Http classes into separate file.</title>
</head>
<body>
<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/13274">13274</a></dd>
<dt>Author</dt> <dd>dd32</dd>
<dt>Date</dt> <dd>2010-02-21 02:06:24 +0000 (Sun, 21 Feb 2010)</dd>
</dl>
<h3>Log Message</h3>
<pre>Split WP_Http classes into separate file. Fixes <a href="http://trac.wordpress.org/ticket/11559">#11559</a></pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpincludeshttpphp">trunk/wp-includes/http.php</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkwpincludesclasshttpphp">trunk/wp-includes/class-http.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkwpincludesclasshttpphp"></a>
<div class="addfile"><h4>Added: trunk/wp-includes/class-http.php (0 => 13274)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/class-http.php (rev 0)
+++ trunk/wp-includes/class-http.php 2010-02-21 02:06:24 UTC (rev 13274)
</span><span class="lines">@@ -0,0 +1,1997 @@
</span><ins>+<?php
+/**
+ * Simple and uniform HTTP request API.
+ *
+ * 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 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 ) <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' => '');
+
+ // 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 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 {
+ $arrURL['port'] = 80;
+ }
+ }
+
+ //fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1,
+ // which fails when the server is not setup for it. For compatibility, always connect to the IPv4 address.
+ if ( 'localhost' == strtolower($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:
+ * <ol>
+ * <li>WP_PROXY_HOST - Enable proxy support and host for connecting.</li>
+ * <li>WP_PROXY_PORT - Proxy port for connection. No default, must be defined.</li>
+ * <li>WP_PROXY_USERNAME - Proxy username, if it requires authentication.</li>
+ * <li>WP_PROXY_PASSWORD - Proxy password, if it requires authentication.</li>
+ * <li>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</li>
+ * </ol>
+ *
+ * An example can be as seen below.
+ * <code>
+ * define('WP_PROXY_HOST', '192.168.84.101');
+ * define('WP_PROXY_PORT', '8080');
+ * define('WP_PROXY_BYPASS_HOSTS', 'localhost, www.example.com');
+ * </code>
+ *
+ * @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
+ * @author Beau Lebens
+ */
+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:
+ * <ol>
+ * <li>Name</li>
+ * <li>Value - should NOT be urlencoded already.</li>
+ * <li>Expires - (optional) String or int (UNIX timestamp).</li>
+ * <li>Path (optional)</li>
+ * <li>Domain (optional)</li>
+ * </ol>
+ *
+ * @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 ) = explode( '=', $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') );
+ }
+}
</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="trunkwpincludeshttpphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/http.php (13273 => 13274)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/http.php 2010-02-21 01:33:35 UTC (rev 13273)
+++ trunk/wp-includes/http.php 2010-02-21 02:06:24 UTC (rev 13274)
</span><span class="lines">@@ -13,1989 +13,6 @@
</span><span class="cx"> */
</span><span class="cx">
</span><span class="cx"> /**
</span><del>- * 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 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 ) <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' => '');
-
- // 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 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 {
- $arrURL['port'] = 80;
- }
- }
-
- //fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1,
- // which fails when the server is not setup for it. For compatibility, always connect to the IPv4 address.
- if ( 'localhost' == strtolower($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:
- * <ol>
- * <li>WP_PROXY_HOST - Enable proxy support and host for connecting.</li>
- * <li>WP_PROXY_PORT - Proxy port for connection. No default, must be defined.</li>
- * <li>WP_PROXY_USERNAME - Proxy username, if it requires authentication.</li>
- * <li>WP_PROXY_PASSWORD - Proxy password, if it requires authentication.</li>
- * <li>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</li>
- * </ol>
- *
- * An example can be as seen below.
- * <code>
- * define('WP_PROXY_HOST', '192.168.84.101');
- * define('WP_PROXY_PORT', '8080');
- * define('WP_PROXY_BYPASS_HOSTS', 'localhost, www.example.com');
- * </code>
- *
- * @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
- * @author Beau Lebens
- */
-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:
- * <ol>
- * <li>Name</li>
- * <li>Value - should NOT be urlencoded already.</li>
- * <li>Expires - (optional) String or int (UNIX timestamp).</li>
- * <li>Path (optional)</li>
- * <li>Domain (optional)</li>
- * </ol>
- *
- * @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 ) = explode( '=', $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') );
- }
-}
-
-/**
</del><span class="cx"> * Returns the initialized WP_Http Object
</span><span class="cx"> *
</span><span class="cx"> * @since 2.7.0
</span><span class="lines">@@ -2006,6 +23,9 @@
</span><span class="cx"> function &_wp_http_get_object() {
</span><span class="cx"> static $http;
</span><span class="cx">
</span><ins>+ if ( ! class_exists('WP_Http') )
+ require( ABSPATH . WPINC . '/class-http.php' );
+
</ins><span class="cx"> if ( is_null($http) )
</span><span class="cx"> $http = new WP_Http();
</span><span class="cx">
</span></span></pre>
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