Changeset 13274
- Timestamp:
- 02/21/2010 02:06:24 AM (15 years ago)
- Location:
- trunk/wp-includes
- Files:
-
- 1 added
- 1 edited
-
class-http.php (added)
-
http.php (modified) (2 diffs)
Legend:
- Unmodified
- Added
- Removed
-
trunk/wp-includes/http.php
r13268 r13274 14 14 15 15 /** 16 * WordPress HTTP Class for managing HTTP Transports and making HTTP requests.17 *18 * This class is called for the functionality of making HTTP requests and should replace Snoopy19 * functionality, eventually. There is no available functionality to add HTTP transport20 * implementations, since most of the HTTP transports are added and available for use.21 *22 * The exception is that cURL is not available as a transport and lacking an implementation. It will23 * be added later and should be a patch on the WordPress Trac.24 *25 * There are no properties, because none are needed and for performance reasons. Some of the26 * functions are static and while they do have some overhead over functions in PHP4, the purpose is27 * maintainability. When PHP5 is finally the requirement, it will be easy to add the static keyword28 * to the code. It is not as easy to convert a function to a method after enough code uses the old29 * way.30 *31 * Debugging includes several actions, which pass different variables for debugging the HTTP API.32 *33 * <strong>http_transport_get_debug</strong> - gives working, nonblocking, and blocking transports.34 *35 * <strong>http_transport_post_debug</strong> - gives working, nonblocking, and blocking transports.36 *37 * @package WordPress38 * @subpackage HTTP39 * @since 2.7.040 */41 class WP_Http {42 43 /**44 * PHP4 style Constructor - Calls PHP5 Style Constructor45 *46 * @since 2.7.047 * @return WP_Http48 */49 function WP_Http() {50 $this->__construct();51 }52 53 /**54 * PHP5 style Constructor - Setup available transport if not available.55 *56 * PHP4 does not have the 'self' keyword and since WordPress supports PHP4,57 * the class needs to be used for the static call.58 *59 * The transport are setup to save time. This should only be called once, so60 * the overhead should be fine.61 *62 * @since 2.7.063 * @return WP_Http64 */65 function __construct() {66 WP_Http::_getTransport();67 WP_Http::_postTransport();68 }69 70 /**71 * Tests the WordPress HTTP objects for an object to use and returns it.72 *73 * Tests all of the objects and returns the object that passes. Also caches74 * that object to be used later.75 *76 * The order for the GET/HEAD requests are HTTP Extension, cURL, Streams, Fopen,77 * and finally Fsockopen. fsockopen() is used last, because it has the most78 * overhead in its implementation. There isn't any real way around it, since79 * redirects have to be supported, much the same way the other transports80 * also handle redirects.81 *82 * There are currently issues with "localhost" not resolving correctly with83 * DNS. This may cause an error "failed to open stream: A connection attempt84 * failed because the connected party did not properly respond after a85 * period of time, or established connection failed because connected host86 * has failed to respond."87 *88 * @since 2.7.089 * @access private90 *91 * @param array $args Request args, default us an empty array92 * @return object|null Null if no transports are available, HTTP transport object.93 */94 function &_getTransport( $args = array() ) {95 static $working_transport, $blocking_transport, $nonblocking_transport;96 97 if ( is_null($working_transport) ) {98 if ( true === WP_Http_ExtHttp::test($args) ) {99 $working_transport['exthttp'] = new WP_Http_ExtHttp();100 $blocking_transport[] = &$working_transport['exthttp'];101 } else if ( true === WP_Http_Curl::test($args) ) {102 $working_transport['curl'] = new WP_Http_Curl();103 $blocking_transport[] = &$working_transport['curl'];104 } else if ( true === WP_Http_Streams::test($args) ) {105 $working_transport['streams'] = new WP_Http_Streams();106 $blocking_transport[] = &$working_transport['streams'];107 } else if ( true === WP_Http_Fopen::test($args) ) {108 $working_transport['fopen'] = new WP_Http_Fopen();109 $blocking_transport[] = &$working_transport['fopen'];110 } else if ( true === WP_Http_Fsockopen::test($args) ) {111 $working_transport['fsockopen'] = new WP_Http_Fsockopen();112 $blocking_transport[] = &$working_transport['fsockopen'];113 }114 115 foreach ( array('curl', 'streams', 'fopen', 'fsockopen', 'exthttp') as $transport ) {116 if ( isset($working_transport[$transport]) )117 $nonblocking_transport[] = &$working_transport[$transport];118 }119 }120 121 do_action( 'http_transport_get_debug', $working_transport, $blocking_transport, $nonblocking_transport );122 123 if ( isset($args['blocking']) && !$args['blocking'] )124 return $nonblocking_transport;125 else126 return $blocking_transport;127 }128 129 /**130 * Tests the WordPress HTTP objects for an object to use and returns it.131 *132 * Tests all of the objects and returns the object that passes. Also caches133 * that object to be used later. This is for posting content to a URL and134 * is used when there is a body. The plain Fopen Transport can not be used135 * to send content, but the streams transport can. This is a limitation that136 * is addressed here, by just not including that transport.137 *138 * @since 2.7.0139 * @access private140 *141 * @param array $args Request args, default us an empty array142 * @return object|null Null if no transports are available, HTTP transport object.143 */144 function &_postTransport( $args = array() ) {145 static $working_transport, $blocking_transport, $nonblocking_transport;146 147 if ( is_null($working_transport) ) {148 if ( true === WP_Http_ExtHttp::test($args) ) {149 $working_transport['exthttp'] = new WP_Http_ExtHttp();150 $blocking_transport[] = &$working_transport['exthttp'];151 } else if ( true === WP_Http_Curl::test($args) ) {152 $working_transport['curl'] = new WP_Http_Curl();153 $blocking_transport[] = &$working_transport['curl'];154 } else if ( true === WP_Http_Streams::test($args) ) {155 $working_transport['streams'] = new WP_Http_Streams();156 $blocking_transport[] = &$working_transport['streams'];157 } else if ( true === WP_Http_Fsockopen::test($args) ) {158 $working_transport['fsockopen'] = new WP_Http_Fsockopen();159 $blocking_transport[] = &$working_transport['fsockopen'];160 }161 162 foreach ( array('curl', 'streams', 'fsockopen', 'exthttp') as $transport ) {163 if ( isset($working_transport[$transport]) )164 $nonblocking_transport[] = &$working_transport[$transport];165 }166 }167 168 do_action( 'http_transport_post_debug', $working_transport, $blocking_transport, $nonblocking_transport );169 170 if ( isset($args['blocking']) && !$args['blocking'] )171 return $nonblocking_transport;172 else173 return $blocking_transport;174 }175 176 /**177 * Send a HTTP request to a URI.178 *179 * The body and headers are part of the arguments. The 'body' argument is for the body and will180 * accept either a string or an array. The 'headers' argument should be an array, but a string181 * is acceptable. If the 'body' argument is an array, then it will automatically be escaped182 * using http_build_query().183 *184 * The only URI that are supported in the HTTP Transport implementation are the HTTP and HTTPS185 * protocols. HTTP and HTTPS are assumed so the server might not know how to handle the send186 * headers. Other protocols are unsupported and most likely will fail.187 *188 * The defaults are 'method', 'timeout', 'redirection', 'httpversion', 'blocking' and189 * 'user-agent'.190 *191 * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports technically allow192 * others, but should not be assumed. The 'timeout' is used to sent how long the connection193 * should stay open before failing when no response. 'redirection' is used to track how many194 * redirects were taken and used to sent the amount for other transports, but not all transports195 * accept setting that value.196 *197 * The 'httpversion' option is used to sent the HTTP version and accepted values are '1.0', and198 * '1.1' and should be a string. Version 1.1 is not supported, because of chunk response. The199 * 'user-agent' option is the user-agent and is used to replace the default user-agent, which is200 * 'WordPress/WP_Version', where WP_Version is the value from $wp_version.201 *202 * 'blocking' is the default, which is used to tell the transport, whether it should halt PHP203 * while it performs the request or continue regardless. Actually, that isn't entirely correct.204 * Blocking mode really just means whether the fread should just pull what it can whenever it205 * gets bytes or if it should wait until it has enough in the buffer to read or finishes reading206 * the entire content. It doesn't actually always mean that PHP will continue going after making207 * the request.208 *209 * @access public210 * @since 2.7.0211 * @todo Refactor this code. The code in this method extends the scope of its original purpose212 * and should be refactored to allow for cleaner abstraction and reduce duplication of the213 * code. One suggestion is to create a class specifically for the arguments, however214 * preliminary refactoring to this affect has affect more than just the scope of the215 * arguments. Something to ponder at least.216 *217 * @param string $url URI resource.218 * @param str|array $args Optional. Override the defaults.219 * @return array containing 'headers', 'body', 'response', 'cookies'220 */221 function request( $url, $args = array() ) {222 global $wp_version;223 224 $defaults = array(225 'method' => 'GET',226 'timeout' => apply_filters( 'http_request_timeout', 5),227 'redirection' => apply_filters( 'http_request_redirection_count', 5),228 'httpversion' => apply_filters( 'http_request_version', '1.0'),229 'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ) ),230 'blocking' => true,231 'headers' => array(),232 'cookies' => array(),233 'body' => null,234 'compress' => false,235 'decompress' => true,236 'sslverify' => true237 );238 239 $r = wp_parse_args( $args, $defaults );240 $r = apply_filters( 'http_request_args', $r, $url );241 242 // Allow plugins to short-circuit the request243 $pre = apply_filters( 'pre_http_request', false, $r, $url );244 if ( false !== $pre )245 return $pre;246 247 $arrURL = parse_url($url);248 249 if ( $this->block_request( $url ) )250 return new WP_Error('http_request_failed', __('User has blocked requests through HTTP.'));251 252 // Determine if this is a https call and pass that on to the transport functions253 // so that we can blacklist the transports that do not support ssl verification254 $r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl';255 256 // Determine if this request is to OUR install of WordPress257 $homeURL = parse_url(get_bloginfo('url'));258 $r['local'] = $homeURL['host'] == $arrURL['host'] || 'localhost' == $arrURL['host'];259 unset($homeURL);260 261 if ( is_null( $r['headers'] ) )262 $r['headers'] = array();263 264 if ( ! is_array($r['headers']) ) {265 $processedHeaders = WP_Http::processHeaders($r['headers']);266 $r['headers'] = $processedHeaders['headers'];267 }268 269 if ( isset($r['headers']['User-Agent']) ) {270 $r['user-agent'] = $r['headers']['User-Agent'];271 unset($r['headers']['User-Agent']);272 }273 274 if ( isset($r['headers']['user-agent']) ) {275 $r['user-agent'] = $r['headers']['user-agent'];276 unset($r['headers']['user-agent']);277 }278 279 // Construct Cookie: header if any cookies are set280 WP_Http::buildCookieHeader( $r );281 282 if ( WP_Http_Encoding::is_available() )283 $r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding();284 285 if ( empty($r['body']) ) {286 // Some servers fail when sending content without the content-length header being set.287 // Also, to fix another bug, we only send when doing POST and PUT and the content-length288 // header isn't already set.289 if( ($r['method'] == 'POST' || $r['method'] == 'PUT') && ! isset($r['headers']['Content-Length']) )290 $r['headers']['Content-Length'] = 0;291 292 // The method is ambiguous, because we aren't talking about HTTP methods, the "get" in293 // this case is simply that we aren't sending any bodies and to get the transports that294 // don't support sending bodies along with those which do.295 $transports = WP_Http::_getTransport($r);296 } else {297 if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) {298 if ( ! version_compare(phpversion(), '5.1.2', '>=') )299 $r['body'] = _http_build_query($r['body'], null, '&');300 else301 $r['body'] = http_build_query($r['body'], null, '&');302 $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset');303 $r['headers']['Content-Length'] = strlen($r['body']);304 }305 306 if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) )307 $r['headers']['Content-Length'] = strlen($r['body']);308 309 // The method is ambiguous, because we aren't talking about HTTP methods, the "post" in310 // this case is simply that we are sending HTTP body and to get the transports that do311 // support sending the body. Not all do, depending on the limitations of the PHP core312 // limitations.313 $transports = WP_Http::_postTransport($r);314 }315 316 do_action( 'http_api_debug', $transports, 'transports_list' );317 318 $response = array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );319 foreach ( (array) $transports as $transport ) {320 $response = $transport->request($url, $r);321 322 do_action( 'http_api_debug', $response, 'response', get_class($transport) );323 324 if ( ! is_wp_error($response) )325 return apply_filters( 'http_response', $response, $r, $url );326 }327 328 return $response;329 }330 331 /**332 * Uses the POST HTTP method.333 *334 * Used for sending data that is expected to be in the body.335 *336 * @access public337 * @since 2.7.0338 *339 * @param string $url URI resource.340 * @param str|array $args Optional. Override the defaults.341 * @return boolean342 */343 function post($url, $args = array()) {344 $defaults = array('method' => 'POST');345 $r = wp_parse_args( $args, $defaults );346 return $this->request($url, $r);347 }348 349 /**350 * Uses the GET HTTP method.351 *352 * Used for sending data that is expected to be in the body.353 *354 * @access public355 * @since 2.7.0356 *357 * @param string $url URI resource.358 * @param str|array $args Optional. Override the defaults.359 * @return boolean360 */361 function get($url, $args = array()) {362 $defaults = array('method' => 'GET');363 $r = wp_parse_args( $args, $defaults );364 return $this->request($url, $r);365 }366 367 /**368 * Uses the HEAD HTTP method.369 *370 * Used for sending data that is expected to be in the body.371 *372 * @access public373 * @since 2.7.0374 *375 * @param string $url URI resource.376 * @param str|array $args Optional. Override the defaults.377 * @return boolean378 */379 function head($url, $args = array()) {380 $defaults = array('method' => 'HEAD');381 $r = wp_parse_args( $args, $defaults );382 return $this->request($url, $r);383 }384 385 /**386 * Parses the responses and splits the parts into headers and body.387 *388 * @access public389 * @static390 * @since 2.7.0391 *392 * @param string $strResponse The full response string393 * @return array Array with 'headers' and 'body' keys.394 */395 function processResponse($strResponse) {396 list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2);397 return array('headers' => $theHeaders, 'body' => $theBody);398 }399 400 /**401 * Transform header string into an array.402 *403 * If an array is given then it is assumed to be raw header data with numeric keys with the404 * headers as the values. No headers must be passed that were already processed.405 *406 * @access public407 * @static408 * @since 2.7.0409 *410 * @param string|array $headers411 * @return array Processed string headers. If duplicate headers are encountered,412 * Then a numbered array is returned as the value of that header-key.413 */414 function processHeaders($headers) {415 // split headers, one per array element416 if ( is_string($headers) ) {417 // tolerate line terminator: CRLF = LF (RFC 2616 19.3)418 $headers = str_replace("\r\n", "\n", $headers);419 // unfold folded header fields. LWS = [CRLF] 1*( SP | HT ) <US-ASCII SP, space (32)>, <US-ASCII HT, horizontal-tab (9)> (RFC 2616 2.2)420 $headers = preg_replace('/\n[ \t]/', ' ', $headers);421 // create the headers array422 $headers = explode("\n", $headers);423 }424 425 $response = array('code' => 0, 'message' => '');426 427 // If a redirection has taken place, The headers for each page request may have been passed.428 // In this case, determine the final HTTP header and parse from there.429 for ( $i = count($headers)-1; $i >= 0; $i-- ) {430 if ( false === strpos($headers[$i], ':') ) {431 $headers = array_splice($headers, $i);432 break;433 }434 }435 436 $cookies = array();437 $newheaders = array();438 foreach ( $headers as $tempheader ) {439 if ( empty($tempheader) )440 continue;441 442 if ( false === strpos($tempheader, ':') ) {443 list( , $iResponseCode, $strResponseMsg) = explode(' ', $tempheader, 3);444 $response['code'] = $iResponseCode;445 $response['message'] = $strResponseMsg;446 continue;447 }448 449 list($key, $value) = explode(':', $tempheader, 2);450 451 if ( !empty( $value ) ) {452 $key = strtolower( $key );453 if ( isset( $newheaders[$key] ) ) {454 $newheaders[$key] = array( $newheaders[$key], trim( $value ) );455 } else {456 $newheaders[$key] = trim( $value );457 }458 if ( 'set-cookie' == strtolower( $key ) )459 $cookies[] = new WP_Http_Cookie( $value );460 }461 }462 463 return array('response' => $response, 'headers' => $newheaders, 'cookies' => $cookies);464 }465 466 /**467 * Takes the arguments for a ::request() and checks for the cookie array.468 *469 * If it's found, then it's assumed to contain WP_Http_Cookie objects, which are each parsed470 * into strings and added to the Cookie: header (within the arguments array). Edits the array by471 * reference.472 *473 * @access public474 * @version 2.8.0475 * @static476 *477 * @param array $r Full array of args passed into ::request()478 */479 function buildCookieHeader( &$r ) {480 if ( ! empty($r['cookies']) ) {481 $cookies_header = '';482 foreach ( (array) $r['cookies'] as $cookie ) {483 $cookies_header .= $cookie->getHeaderValue() . '; ';484 }485 $cookies_header = substr( $cookies_header, 0, -2 );486 $r['headers']['cookie'] = $cookies_header;487 }488 }489 490 /**491 * Decodes chunk transfer-encoding, based off the HTTP 1.1 specification.492 *493 * Based off the HTTP http_encoding_dechunk function. Does not support UTF-8. Does not support494 * returning footer headers. Shouldn't be too difficult to support it though.495 *496 * @todo Add support for footer chunked headers.497 * @access public498 * @since 2.7.0499 * @static500 *501 * @param string $body Body content502 * @return string Chunked decoded body on success or raw body on failure.503 */504 function chunkTransferDecode($body) {505 $body = str_replace(array("\r\n", "\r"), "\n", $body);506 // The body is not chunked encoding or is malformed.507 if ( ! preg_match( '/^[0-9a-f]+(\s|\n)+/mi', trim($body) ) )508 return $body;509 510 $parsedBody = '';511 //$parsedHeaders = array(); Unsupported512 513 while ( true ) {514 $hasChunk = (bool) preg_match( '/^([0-9a-f]+)(\s|\n)+/mi', $body, $match );515 516 if ( $hasChunk ) {517 if ( empty( $match[1] ) )518 return $body;519 520 $length = hexdec( $match[1] );521 $chunkLength = strlen( $match[0] );522 523 $strBody = substr($body, $chunkLength, $length);524 $parsedBody .= $strBody;525 526 $body = ltrim(str_replace(array($match[0], $strBody), '', $body), "\n");527 528 if ( "0" == trim($body) )529 return $parsedBody; // Ignore footer headers.530 } else {531 return $body;532 }533 }534 }535 536 /**537 * Block requests through the proxy.538 *539 * Those who are behind a proxy and want to prevent access to certain hosts may do so. This will540 * prevent plugins from working and core functionality, if you don't include api.wordpress.org.541 *542 * You block external URL requests by defining WP_HTTP_BLOCK_EXTERNAL in your wp-config.php file543 * and this will only allow localhost and your blog to make requests. The constant544 * WP_ACCESSIBLE_HOSTS will allow additional hosts to go through for requests. The format of the545 * WP_ACCESSIBLE_HOSTS constant is a comma separated list of hostnames to allow.546 *547 * @since 2.8.0548 * @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests.549 *550 * @param string $uri URI of url.551 * @return bool True to block, false to allow.552 */553 function block_request($uri) {554 // We don't need to block requests, because nothing is blocked.555 if ( ! defined('WP_HTTP_BLOCK_EXTERNAL') || ( defined('WP_HTTP_BLOCK_EXTERNAL') && WP_HTTP_BLOCK_EXTERNAL == false ) )556 return false;557 558 // parse_url() only handles http, https type URLs, and will emit E_WARNING on failure.559 // This will be displayed on blogs, which is not reasonable.560 $check = @parse_url($uri);561 562 /* Malformed URL, can not process, but this could mean ssl, so let through anyway.563 *564 * This isn't very security sound. There are instances where a hacker might attempt565 * to bypass the proxy and this check. However, the reason for this behavior is that566 * WordPress does not do any checking currently for non-proxy requests, so it is keeps with567 * the default unsecure nature of the HTTP request.568 */569 if ( $check === false )570 return false;571 572 $home = parse_url( get_option('siteurl') );573 574 // Don't block requests back to ourselves by default575 if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] )576 return apply_filters('block_local_requests', false);577 578 if ( !defined('WP_ACCESSIBLE_HOSTS') )579 return true;580 581 static $accessible_hosts;582 if ( null == $accessible_hosts )583 $accessible_hosts = preg_split('|,\s*|', WP_ACCESSIBLE_HOSTS);584 585 return !in_array( $check['host'], $accessible_hosts ); //Inverse logic, If its in the array, then we can't access it.586 }587 }588 589 /**590 * HTTP request method uses fsockopen function to retrieve the url.591 *592 * This would be the preferred method, but the fsockopen implementation has the most overhead of all593 * the HTTP transport implementations.594 *595 * @package WordPress596 * @subpackage HTTP597 * @since 2.7.0598 */599 class WP_Http_Fsockopen {600 /**601 * Send a HTTP request to a URI using fsockopen().602 *603 * Does not support non-blocking mode.604 *605 * @see WP_Http::request For default options descriptions.606 *607 * @since 2.7608 * @access public609 * @param string $url URI resource.610 * @param str|array $args Optional. Override the defaults.611 * @return array 'headers', 'body', 'cookies' and 'response' keys.612 */613 function request($url, $args = array()) {614 $defaults = array(615 'method' => 'GET', 'timeout' => 5,616 'redirection' => 5, 'httpversion' => '1.0',617 'blocking' => true,618 'headers' => array(), 'body' => null, 'cookies' => array()619 );620 621 $r = wp_parse_args( $args, $defaults );622 623 if ( isset($r['headers']['User-Agent']) ) {624 $r['user-agent'] = $r['headers']['User-Agent'];625 unset($r['headers']['User-Agent']);626 } else if( isset($r['headers']['user-agent']) ) {627 $r['user-agent'] = $r['headers']['user-agent'];628 unset($r['headers']['user-agent']);629 }630 631 // Construct Cookie: header if any cookies are set632 WP_Http::buildCookieHeader( $r );633 634 $iError = null; // Store error number635 $strError = null; // Store error string636 637 $arrURL = parse_url($url);638 639 $fsockopen_host = $arrURL['host'];640 641 $secure_transport = false;642 643 if ( ! isset( $arrURL['port'] ) ) {644 if ( ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ) && extension_loaded('openssl') ) {645 $fsockopen_host = "ssl://$fsockopen_host";646 $arrURL['port'] = 443;647 $secure_transport = true;648 } else {649 $arrURL['port'] = 80;650 }651 }652 653 //fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1,654 // which fails when the server is not setup for it. For compatibility, always connect to the IPv4 address.655 if ( 'localhost' == strtolower($fsockopen_host) )656 $fsockopen_host = '127.0.0.1';657 658 // There are issues with the HTTPS and SSL protocols that cause errors that can be safely659 // ignored and should be ignored.660 if ( true === $secure_transport )661 $error_reporting = error_reporting(0);662 663 $startDelay = time();664 665 $proxy = new WP_HTTP_Proxy();666 667 if ( !WP_DEBUG ) {668 if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )669 $handle = @fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );670 else671 $handle = @fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] );672 } else {673 if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )674 $handle = fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );675 else676 $handle = fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] );677 }678 679 $endDelay = time();680 681 // If the delay is greater than the timeout then fsockopen should't be used, because it will682 // cause a long delay.683 $elapseDelay = ($endDelay-$startDelay) > $r['timeout'];684 if ( true === $elapseDelay )685 add_option( 'disable_fsockopen', $endDelay, null, true );686 687 if ( false === $handle )688 return new WP_Error('http_request_failed', $iError . ': ' . $strError);689 690 $timeout = (int) floor( $r['timeout'] );691 $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;692 stream_set_timeout( $handle, $timeout, $utimeout );693 694 if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) //Some proxies require full URL in this field.695 $requestPath = $url;696 else697 $requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );698 699 if ( empty($requestPath) )700 $requestPath .= '/';701 702 $strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";703 704 if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )705 $strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";706 else707 $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";708 709 if ( isset($r['user-agent']) )710 $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";711 712 if ( is_array($r['headers']) ) {713 foreach ( (array) $r['headers'] as $header => $headerValue )714 $strHeaders .= $header . ': ' . $headerValue . "\r\n";715 } else {716 $strHeaders .= $r['headers'];717 }718 719 if ( $proxy->use_authentication() )720 $strHeaders .= $proxy->authentication_header() . "\r\n";721 722 $strHeaders .= "\r\n";723 724 if ( ! is_null($r['body']) )725 $strHeaders .= $r['body'];726 727 fwrite($handle, $strHeaders);728 729 if ( ! $r['blocking'] ) {730 fclose($handle);731 return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );732 }733 734 $strResponse = '';735 while ( ! feof($handle) )736 $strResponse .= fread($handle, 4096);737 738 fclose($handle);739 740 if ( true === $secure_transport )741 error_reporting($error_reporting);742 743 $process = WP_Http::processResponse($strResponse);744 $arrHeaders = WP_Http::processHeaders($process['headers']);745 746 // Is the response code within the 400 range?747 if ( (int) $arrHeaders['response']['code'] >= 400 && (int) $arrHeaders['response']['code'] < 500 )748 return new WP_Error('http_request_failed', $arrHeaders['response']['code'] . ': ' . $arrHeaders['response']['message']);749 750 // If location is found, then assume redirect and redirect to location.751 if ( 'HEAD' != $r['method'] && isset($arrHeaders['headers']['location']) ) {752 if ( $r['redirection']-- > 0 ) {753 return $this->request($arrHeaders['headers']['location'], $r);754 } else {755 return new WP_Error('http_request_failed', __('Too many redirects.'));756 }757 }758 759 // If the body was chunk encoded, then decode it.760 if ( ! empty( $process['body'] ) && isset( $arrHeaders['headers']['transfer-encoding'] ) && 'chunked' == $arrHeaders['headers']['transfer-encoding'] )761 $process['body'] = WP_Http::chunkTransferDecode($process['body']);762 763 if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($arrHeaders['headers']) )764 $process['body'] = WP_Http_Encoding::decompress( $process['body'] );765 766 return array('headers' => $arrHeaders['headers'], 'body' => $process['body'], 'response' => $arrHeaders['response'], 'cookies' => $arrHeaders['cookies']);767 }768 769 /**770 * Whether this class can be used for retrieving an URL.771 *772 * @since 2.7.0773 * @static774 * @return boolean False means this class can not be used, true means it can.775 */776 function test( $args = array() ) {777 if ( false !== ($option = get_option( 'disable_fsockopen' )) && time()-$option < 43200 ) // 12 hours778 return false;779 780 $is_ssl = isset($args['ssl']) && $args['ssl'];781 782 if ( ! $is_ssl && function_exists( 'fsockopen' ) )783 $use = true;784 elseif ( $is_ssl && extension_loaded('openssl') && function_exists( 'fsockopen' ) )785 $use = true;786 else787 $use = false;788 789 return apply_filters('use_fsockopen_transport', $use, $args);790 }791 }792 793 /**794 * HTTP request method uses fopen function to retrieve the url.795 *796 * Requires PHP version greater than 4.3.0 for stream support. Does not allow for $context support,797 * but should still be okay, to write the headers, before getting the response. Also requires that798 * 'allow_url_fopen' to be enabled.799 *800 * @package WordPress801 * @subpackage HTTP802 * @since 2.7.0803 */804 class WP_Http_Fopen {805 /**806 * Send a HTTP request to a URI using fopen().807 *808 * This transport does not support sending of headers and body, therefore should not be used in809 * the instances, where there is a body and headers.810 *811 * Notes: Does not support non-blocking mode. Ignores 'redirection' option.812 *813 * @see WP_Http::retrieve For default options descriptions.814 *815 * @access public816 * @since 2.7.0817 *818 * @param string $url URI resource.819 * @param str|array $args Optional. Override the defaults.820 * @return array 'headers', 'body', 'cookies' and 'response' keys.821 */822 function request($url, $args = array()) {823 $defaults = array(824 'method' => 'GET', 'timeout' => 5,825 'redirection' => 5, 'httpversion' => '1.0',826 'blocking' => true,827 'headers' => array(), 'body' => null, 'cookies' => array()828 );829 830 $r = wp_parse_args( $args, $defaults );831 832 $arrURL = parse_url($url);833 834 if ( false === $arrURL )835 return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url));836 837 if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] )838 $url = str_replace($arrURL['scheme'], 'http', $url);839 840 if ( is_null( $r['headers'] ) )841 $r['headers'] = array();842 843 if ( is_string($r['headers']) ) {844 $processedHeaders = WP_Http::processHeaders($r['headers']);845 $r['headers'] = $processedHeaders['headers'];846 }847 848 $initial_user_agent = ini_get('user_agent');849 850 if ( !empty($r['headers']) && is_array($r['headers']) ) {851 $user_agent_extra_headers = '';852 foreach ( $r['headers'] as $header => $value )853 $user_agent_extra_headers .= "\r\n$header: $value";854 @ini_set('user_agent', $r['user-agent'] . $user_agent_extra_headers);855 } else {856 @ini_set('user_agent', $r['user-agent']);857 }858 859 if ( !WP_DEBUG )860 $handle = @fopen($url, 'r');861 else862 $handle = fopen($url, 'r');863 864 if (! $handle)865 return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));866 867 $timeout = (int) floor( $r['timeout'] );868 $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;869 stream_set_timeout( $handle, $timeout, $utimeout );870 871 if ( ! $r['blocking'] ) {872 fclose($handle);873 @ini_set('user_agent', $initial_user_agent); //Clean up any extra headers added874 return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );875 }876 877 $strResponse = '';878 while ( ! feof($handle) )879 $strResponse .= fread($handle, 4096);880 881 if ( function_exists('stream_get_meta_data') ) {882 $meta = stream_get_meta_data($handle);883 $theHeaders = $meta['wrapper_data'];884 if ( isset( $meta['wrapper_data']['headers'] ) )885 $theHeaders = $meta['wrapper_data']['headers'];886 } else {887 //$http_response_header is a PHP reserved variable which is set in the current-scope when using the HTTP Wrapper888 //see http://php.oregonstate.edu/manual/en/reserved.variables.httpresponseheader.php889 $theHeaders = $http_response_header;890 }891 892 fclose($handle);893 894 @ini_set('user_agent', $initial_user_agent); //Clean up any extra headers added895 896 $processedHeaders = WP_Http::processHeaders($theHeaders);897 898 if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] )899 $strResponse = WP_Http::chunkTransferDecode($strResponse);900 901 if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) )902 $strResponse = WP_Http_Encoding::decompress( $strResponse );903 904 return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies']);905 }906 907 /**908 * Whether this class can be used for retrieving an URL.909 *910 * @since 2.7.0911 * @static912 * @return boolean False means this class can not be used, true means it can.913 */914 function test($args = array()) {915 if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) )916 return false;917 918 if ( isset($args['method']) && 'HEAD' == $args['method'] ) //This transport cannot make a HEAD request919 return false;920 921 $use = true;922 //PHP does not verify SSL certs, We can only make a request via this transports if SSL Verification is turned off.923 $is_ssl = isset($args['ssl']) && $args['ssl'];924 if ( $is_ssl ) {925 $is_local = isset($args['local']) && $args['local'];926 $ssl_verify = isset($args['sslverify']) && $args['sslverify'];927 if ( $is_local && true != apply_filters('https_local_ssl_verify', true) )928 $use = true;929 elseif ( !$is_local && true != apply_filters('https_ssl_verify', true) )930 $use = true;931 elseif ( !$ssl_verify )932 $use = true;933 else934 $use = false;935 }936 937 return apply_filters('use_fopen_transport', $use, $args);938 }939 }940 941 /**942 * HTTP request method uses Streams to retrieve the url.943 *944 * Requires PHP 5.0+ and uses fopen with stream context. Requires that 'allow_url_fopen' PHP setting945 * to be enabled.946 *947 * Second preferred method for getting the URL, for PHP 5.948 *949 * @package WordPress950 * @subpackage HTTP951 * @since 2.7.0952 */953 class WP_Http_Streams {954 /**955 * Send a HTTP request to a URI using streams with fopen().956 *957 * @access public958 * @since 2.7.0959 *960 * @param string $url961 * @param str|array $args Optional. Override the defaults.962 * @return array 'headers', 'body', 'cookies' and 'response' keys.963 */964 function request($url, $args = array()) {965 $defaults = array(966 'method' => 'GET', 'timeout' => 5,967 'redirection' => 5, 'httpversion' => '1.0',968 'blocking' => true,969 'headers' => array(), 'body' => null, 'cookies' => array()970 );971 972 $r = wp_parse_args( $args, $defaults );973 974 if ( isset($r['headers']['User-Agent']) ) {975 $r['user-agent'] = $r['headers']['User-Agent'];976 unset($r['headers']['User-Agent']);977 } else if( isset($r['headers']['user-agent']) ) {978 $r['user-agent'] = $r['headers']['user-agent'];979 unset($r['headers']['user-agent']);980 }981 982 // Construct Cookie: header if any cookies are set983 WP_Http::buildCookieHeader( $r );984 985 $arrURL = parse_url($url);986 987 if ( false === $arrURL )988 return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url));989 990 if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] )991 $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url);992 993 // Convert Header array to string.994 $strHeaders = '';995 if ( is_array( $r['headers'] ) )996 foreach ( $r['headers'] as $name => $value )997 $strHeaders .= "{$name}: $value\r\n";998 else if ( is_string( $r['headers'] ) )999 $strHeaders = $r['headers'];1000 1001 $is_local = isset($args['local']) && $args['local'];1002 $ssl_verify = isset($args['sslverify']) && $args['sslverify'];1003 if ( $is_local )1004 $ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify);1005 elseif ( ! $is_local )1006 $ssl_verify = apply_filters('https_ssl_verify', $ssl_verify);1007 1008 $arrContext = array('http' =>1009 array(1010 'method' => strtoupper($r['method']),1011 'user_agent' => $r['user-agent'],1012 'max_redirects' => $r['redirection'] + 1, // See #115571013 'protocol_version' => (float) $r['httpversion'],1014 'header' => $strHeaders,1015 'ignore_errors' => true, // Return non-200 requests.1016 'timeout' => $r['timeout'],1017 'ssl' => array(1018 'verify_peer' => $ssl_verify,1019 'verify_host' => $ssl_verify1020 )1021 )1022 );1023 1024 $proxy = new WP_HTTP_Proxy();1025 1026 if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {1027 $arrContext['http']['proxy'] = 'tcp://' . $proxy->host() . ':' . $proxy->port();1028 $arrContext['http']['request_fulluri'] = true;1029 1030 // We only support Basic authentication so this will only work if that is what your proxy supports.1031 if ( $proxy->use_authentication() )1032 $arrContext['http']['header'] .= $proxy->authentication_header() . "\r\n";1033 }1034 1035 if ( 'HEAD' == $r['method'] ) // Disable redirects for HEAD requests1036 $arrContext['http']['max_redirects'] = 1;1037 1038 if ( ! empty($r['body'] ) )1039 $arrContext['http']['content'] = $r['body'];1040 1041 $context = stream_context_create($arrContext);1042 1043 if ( !WP_DEBUG )1044 $handle = @fopen($url, 'r', false, $context);1045 else1046 $handle = fopen($url, 'r', false, $context);1047 1048 if ( ! $handle )1049 return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));1050 1051 $timeout = (int) floor( $r['timeout'] );1052 $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;1053 stream_set_timeout( $handle, $timeout, $utimeout );1054 1055 if ( ! $r['blocking'] ) {1056 stream_set_blocking($handle, 0);1057 fclose($handle);1058 return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );1059 }1060 1061 $strResponse = stream_get_contents($handle);1062 $meta = stream_get_meta_data($handle);1063 1064 fclose($handle);1065 1066 $processedHeaders = array();1067 if ( isset( $meta['wrapper_data']['headers'] ) )1068 $processedHeaders = WP_Http::processHeaders($meta['wrapper_data']['headers']);1069 else1070 $processedHeaders = WP_Http::processHeaders($meta['wrapper_data']);1071 1072 if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] )1073 $strResponse = WP_Http::chunkTransferDecode($strResponse);1074 1075 if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) )1076 $strResponse = WP_Http_Encoding::decompress( $strResponse );1077 1078 return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies']);1079 }1080 1081 /**1082 * Whether this class can be used for retrieving an URL.1083 *1084 * @static1085 * @access public1086 * @since 2.7.01087 *1088 * @return boolean False means this class can not be used, true means it can.1089 */1090 function test($args = array()) {1091 if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) )1092 return false;1093 1094 if ( version_compare(PHP_VERSION, '5.0', '<') )1095 return false;1096 1097 //HTTPS via Proxy was added in 5.1.01098 $is_ssl = isset($args['ssl']) && $args['ssl'];1099 if ( $is_ssl && version_compare(PHP_VERSION, '5.1.0', '<') ) {1100 $proxy = new WP_HTTP_Proxy();1101 /**1102 * No URL check, as its not currently passed to the ::test() function1103 * In the case where a Proxy is in use, Just bypass this transport for HTTPS.1104 */1105 if ( $proxy->is_enabled() )1106 return false;1107 }1108 1109 return apply_filters('use_streams_transport', true, $args);1110 }1111 }1112 1113 /**1114 * HTTP request method uses HTTP extension to retrieve the url.1115 *1116 * Requires the HTTP extension to be installed. This would be the preferred transport since it can1117 * handle a lot of the problems that forces the others to use the HTTP version 1.0. Even if PHP 5.2+1118 * is being used, it doesn't mean that the HTTP extension will be enabled.1119 *1120 * @package WordPress1121 * @subpackage HTTP1122 * @since 2.7.01123 */1124 class WP_Http_ExtHTTP {1125 /**1126 * Send a HTTP request to a URI using HTTP extension.1127 *1128 * Does not support non-blocking.1129 *1130 * @access public1131 * @since 2.71132 *1133 * @param string $url1134 * @param str|array $args Optional. Override the defaults.1135 * @return array 'headers', 'body', 'cookies' and 'response' keys.1136 */1137 function request($url, $args = array()) {1138 $defaults = array(1139 'method' => 'GET', 'timeout' => 5,1140 'redirection' => 5, 'httpversion' => '1.0',1141 'blocking' => true,1142 'headers' => array(), 'body' => null, 'cookies' => array()1143 );1144 1145 $r = wp_parse_args( $args, $defaults );1146 1147 if ( isset($r['headers']['User-Agent']) ) {1148 $r['user-agent'] = $r['headers']['User-Agent'];1149 unset($r['headers']['User-Agent']);1150 } else if( isset($r['headers']['user-agent']) ) {1151 $r['user-agent'] = $r['headers']['user-agent'];1152 unset($r['headers']['user-agent']);1153 }1154 1155 // Construct Cookie: header if any cookies are set1156 WP_Http::buildCookieHeader( $r );1157 1158 switch ( $r['method'] ) {1159 case 'POST':1160 $r['method'] = HTTP_METH_POST;1161 break;1162 case 'HEAD':1163 $r['method'] = HTTP_METH_HEAD;1164 break;1165 case 'PUT':1166 $r['method'] = HTTP_METH_PUT;1167 break;1168 case 'GET':1169 default:1170 $r['method'] = HTTP_METH_GET;1171 }1172 1173 $arrURL = parse_url($url);1174 1175 if ( 'http' != $arrURL['scheme'] || 'https' != $arrURL['scheme'] )1176 $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url);1177 1178 $is_local = isset($args['local']) && $args['local'];1179 $ssl_verify = isset($args['sslverify']) && $args['sslverify'];1180 if ( $is_local )1181 $ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify);1182 elseif ( ! $is_local )1183 $ssl_verify = apply_filters('https_ssl_verify', $ssl_verify);1184 1185 $r['timeout'] = (int) ceil( $r['timeout'] );1186 1187 $options = array(1188 'timeout' => $r['timeout'],1189 'connecttimeout' => $r['timeout'],1190 'redirect' => $r['redirection'],1191 'useragent' => $r['user-agent'],1192 'headers' => $r['headers'],1193 'ssl' => array(1194 'verifypeer' => $ssl_verify,1195 'verifyhost' => $ssl_verify1196 )1197 );1198 1199 if ( HTTP_METH_HEAD == $r['method'] )1200 $options['redirect'] = 0; // Assumption: Docs seem to suggest that this means do not follow. Untested.1201 1202 // The HTTP extensions offers really easy proxy support.1203 $proxy = new WP_HTTP_Proxy();1204 1205 if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {1206 $options['proxyhost'] = $proxy->host();1207 $options['proxyport'] = $proxy->port();1208 $options['proxytype'] = HTTP_PROXY_HTTP;1209 1210 if ( $proxy->use_authentication() ) {1211 $options['proxyauth'] = $proxy->authentication();1212 $options['proxyauthtype'] = HTTP_AUTH_BASIC;1213 }1214 }1215 1216 if ( !WP_DEBUG ) //Emits warning level notices for max redirects and timeouts1217 $strResponse = @http_request($r['method'], $url, $r['body'], $options, $info);1218 else1219 $strResponse = http_request($r['method'], $url, $r['body'], $options, $info); //Emits warning level notices for max redirects and timeouts1220 1221 // Error may still be set, Response may return headers or partial document, and error1222 // contains a reason the request was aborted, eg, timeout expired or max-redirects reached.1223 if ( false === $strResponse || ! empty($info['error']) )1224 return new WP_Error('http_request_failed', $info['response_code'] . ': ' . $info['error']);1225 1226 if ( ! $r['blocking'] )1227 return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );1228 1229 list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2);1230 $theHeaders = WP_Http::processHeaders($theHeaders);1231 1232 if ( ! empty( $theBody ) && isset( $theHeaders['headers']['transfer-encoding'] ) && 'chunked' == $theHeaders['headers']['transfer-encoding'] ) {1233 if ( !WP_DEBUG )1234 $theBody = @http_chunked_decode($theBody);1235 else1236 $theBody = http_chunked_decode($theBody);1237 }1238 1239 if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) )1240 $theBody = http_inflate( $theBody );1241 1242 $theResponse = array();1243 $theResponse['code'] = $info['response_code'];1244 $theResponse['message'] = get_status_header_desc($info['response_code']);1245 1246 return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $theResponse, 'cookies' => $theHeaders['cookies']);1247 }1248 1249 /**1250 * Whether this class can be used for retrieving an URL.1251 *1252 * @static1253 * @since 2.7.01254 *1255 * @return boolean False means this class can not be used, true means it can.1256 */1257 function test($args = array()) {1258 return apply_filters('use_http_extension_transport', function_exists('http_request'), $args );1259 }1260 }1261 1262 /**1263 * HTTP request method uses Curl extension to retrieve the url.1264 *1265 * Requires the Curl extension to be installed.1266 *1267 * @package WordPress1268 * @subpackage HTTP1269 * @since 2.71270 */1271 class WP_Http_Curl {1272 1273 /**1274 * Send a HTTP request to a URI using cURL extension.1275 *1276 * @access public1277 * @since 2.7.01278 *1279 * @param string $url1280 * @param str|array $args Optional. Override the defaults.1281 * @return array 'headers', 'body', 'cookies' and 'response' keys.1282 */1283 function request($url, $args = array()) {1284 $defaults = array(1285 'method' => 'GET', 'timeout' => 5,1286 'redirection' => 5, 'httpversion' => '1.0',1287 'blocking' => true,1288 'headers' => array(), 'body' => null, 'cookies' => array()1289 );1290 1291 $r = wp_parse_args( $args, $defaults );1292 1293 if ( isset($r['headers']['User-Agent']) ) {1294 $r['user-agent'] = $r['headers']['User-Agent'];1295 unset($r['headers']['User-Agent']);1296 } else if( isset($r['headers']['user-agent']) ) {1297 $r['user-agent'] = $r['headers']['user-agent'];1298 unset($r['headers']['user-agent']);1299 }1300 1301 // Construct Cookie: header if any cookies are set.1302 WP_Http::buildCookieHeader( $r );1303 1304 $handle = curl_init();1305 1306 // cURL offers really easy proxy support.1307 $proxy = new WP_HTTP_Proxy();1308 1309 if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {1310 1311 $isPHP5 = version_compare(PHP_VERSION, '5.0.0', '>=');1312 1313 if ( $isPHP5 ) {1314 curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP );1315 curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() );1316 curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() );1317 } else {1318 curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() .':'. $proxy->port() );1319 }1320 1321 if ( $proxy->use_authentication() ) {1322 if ( $isPHP5 )1323 curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_BASIC );1324 1325 curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() );1326 }1327 }1328 1329 $is_local = isset($args['local']) && $args['local'];1330 $ssl_verify = isset($args['sslverify']) && $args['sslverify'];1331 if ( $is_local )1332 $ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify);1333 elseif ( ! $is_local )1334 $ssl_verify = apply_filters('https_ssl_verify', $ssl_verify);1335 1336 1337 // CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since1338 // a value of 0 will allow an ulimited timeout.1339 $timeout = (int) ceil( $r['timeout'] );1340 curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, $timeout );1341 curl_setopt( $handle, CURLOPT_TIMEOUT, $timeout );1342 1343 curl_setopt( $handle, CURLOPT_URL, $url);1344 curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true );1345 curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, $ssl_verify );1346 curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify );1347 curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] );1348 curl_setopt( $handle, CURLOPT_MAXREDIRS, $r['redirection'] );1349 1350 switch ( $r['method'] ) {1351 case 'HEAD':1352 curl_setopt( $handle, CURLOPT_NOBODY, true );1353 break;1354 case 'POST':1355 curl_setopt( $handle, CURLOPT_POST, true );1356 curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );1357 break;1358 case 'PUT':1359 curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, 'PUT' );1360 curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );1361 break;1362 }1363 1364 if ( true === $r['blocking'] )1365 curl_setopt( $handle, CURLOPT_HEADER, true );1366 else1367 curl_setopt( $handle, CURLOPT_HEADER, false );1368 1369 // The option doesn't work with safe mode or when open_basedir is set.1370 // Disable HEAD when making HEAD requests.1371 if ( !ini_get('safe_mode') && !ini_get('open_basedir') && 'HEAD' != $r['method'] )1372 curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, true );1373 1374 if ( !empty( $r['headers'] ) ) {1375 // cURL expects full header strings in each element1376 $headers = array();1377 foreach ( $r['headers'] as $name => $value ) {1378 $headers[] = "{$name}: $value";1379 }1380 curl_setopt( $handle, CURLOPT_HTTPHEADER, $headers );1381 }1382 1383 if ( $r['httpversion'] == '1.0' )1384 curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0 );1385 else1386 curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );1387 1388 // Cookies are not handled by the HTTP API currently. Allow for plugin authors to handle it1389 // themselves... Although, it is somewhat pointless without some reference.1390 do_action_ref_array( 'http_api_curl', array(&$handle) );1391 1392 // We don't need to return the body, so don't. Just execute request and return.1393 if ( ! $r['blocking'] ) {1394 curl_exec( $handle );1395 curl_close( $handle );1396 return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );1397 }1398 1399 $theResponse = curl_exec( $handle );1400 1401 if ( !empty($theResponse) ) {1402 $headerLength = curl_getinfo($handle, CURLINFO_HEADER_SIZE);1403 $theHeaders = trim( substr($theResponse, 0, $headerLength) );1404 if ( strlen($theResponse) > $headerLength )1405 $theBody = substr( $theResponse, $headerLength );1406 else1407 $theBody = '';1408 if ( false !== strrpos($theHeaders, "\r\n\r\n") ) {1409 $headerParts = explode("\r\n\r\n", $theHeaders);1410 $theHeaders = $headerParts[ count($headerParts) -1 ];1411 }1412 $theHeaders = WP_Http::processHeaders($theHeaders);1413 } else {1414 if ( $curl_error = curl_error($handle) )1415 return new WP_Error('http_request_failed', $curl_error);1416 if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array(301, 302) ) )1417 return new WP_Error('http_request_failed', __('Too many redirects.'));1418 1419 $theHeaders = array( 'headers' => array(), 'cookies' => array() );1420 $theBody = '';1421 }1422 1423 $response = array();1424 $response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE );1425 $response['message'] = get_status_header_desc($response['code']);1426 1427 curl_close( $handle );1428 1429 // See #11305 - When running under safe mode, redirection is disabled above. Handle it manually.1430 if ( !empty($theHeaders['headers']['location']) && (ini_get('safe_mode') || ini_get('open_basedir')) ) {1431 if ( $r['redirection']-- > 0 ) {1432 return $this->request($theHeaders['headers']['location'], $r);1433 } else {1434 return new WP_Error('http_request_failed', __('Too many redirects.'));1435 }1436 }1437 1438 if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) )1439 $theBody = WP_Http_Encoding::decompress( $theBody );1440 1441 return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $response, 'cookies' => $theHeaders['cookies']);1442 }1443 1444 /**1445 * Whether this class can be used for retrieving an URL.1446 *1447 * @static1448 * @since 2.7.01449 *1450 * @return boolean False means this class can not be used, true means it can.1451 */1452 function test($args = array()) {1453 if ( function_exists('curl_init') && function_exists('curl_exec') )1454 return apply_filters('use_curl_transport', true, $args);1455 1456 return false;1457 }1458 }1459 1460 /**1461 * Adds Proxy support to the WordPress HTTP API.1462 *1463 * There are caveats to proxy support. It requires that defines be made in the wp-config.php file to1464 * enable proxy support. There are also a few filters that plugins can hook into for some of the1465 * constants.1466 *1467 * The constants are as follows:1468 * <ol>1469 * <li>WP_PROXY_HOST - Enable proxy support and host for connecting.</li>1470 * <li>WP_PROXY_PORT - Proxy port for connection. No default, must be defined.</li>1471 * <li>WP_PROXY_USERNAME - Proxy username, if it requires authentication.</li>1472 * <li>WP_PROXY_PASSWORD - Proxy password, if it requires authentication.</li>1473 * <li>WP_PROXY_BYPASS_HOSTS - Will prevent the hosts in this list from going through the proxy.1474 * You do not need to have localhost and the blog host in this list, because they will not be passed1475 * through the proxy. The list should be presented in a comma separated list</li>1476 * </ol>1477 *1478 * An example can be as seen below.1479 * <code>1480 * define('WP_PROXY_HOST', '192.168.84.101');1481 * define('WP_PROXY_PORT', '8080');1482 * define('WP_PROXY_BYPASS_HOSTS', 'localhost, www.example.com');1483 * </code>1484 *1485 * @link http://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress.1486 * @since 2.81487 */1488 class WP_HTTP_Proxy {1489 1490 /**1491 * Whether proxy connection should be used.1492 *1493 * @since 2.81494 * @use WP_PROXY_HOST1495 * @use WP_PROXY_PORT1496 *1497 * @return bool1498 */1499 function is_enabled() {1500 return defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT');1501 }1502 1503 /**1504 * Whether authentication should be used.1505 *1506 * @since 2.81507 * @use WP_PROXY_USERNAME1508 * @use WP_PROXY_PASSWORD1509 *1510 * @return bool1511 */1512 function use_authentication() {1513 return defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD');1514 }1515 1516 /**1517 * Retrieve the host for the proxy server.1518 *1519 * @since 2.81520 *1521 * @return string1522 */1523 function host() {1524 if ( defined('WP_PROXY_HOST') )1525 return WP_PROXY_HOST;1526 1527 return '';1528 }1529 1530 /**1531 * Retrieve the port for the proxy server.1532 *1533 * @since 2.81534 *1535 * @return string1536 */1537 function port() {1538 if ( defined('WP_PROXY_PORT') )1539 return WP_PROXY_PORT;1540 1541 return '';1542 }1543 1544 /**1545 * Retrieve the username for proxy authentication.1546 *1547 * @since 2.81548 *1549 * @return string1550 */1551 function username() {1552 if ( defined('WP_PROXY_USERNAME') )1553 return WP_PROXY_USERNAME;1554 1555 return '';1556 }1557 1558 /**1559 * Retrieve the password for proxy authentication.1560 *1561 * @since 2.81562 *1563 * @return string1564 */1565 function password() {1566 if ( defined('WP_PROXY_PASSWORD') )1567 return WP_PROXY_PASSWORD;1568 1569 return '';1570 }1571 1572 /**1573 * Retrieve authentication string for proxy authentication.1574 *1575 * @since 2.81576 *1577 * @return string1578 */1579 function authentication() {1580 return $this->username() . ':' . $this->password();1581 }1582 1583 /**1584 * Retrieve header string for proxy authentication.1585 *1586 * @since 2.81587 *1588 * @return string1589 */1590 function authentication_header() {1591 return 'Proxy-Authentication: Basic ' . base64_encode( $this->authentication() );1592 }1593 1594 /**1595 * Whether URL should be sent through the proxy server.1596 *1597 * We want to keep localhost and the blog URL from being sent through the proxy server, because1598 * some proxies can not handle this. We also have the constant available for defining other1599 * hosts that won't be sent through the proxy.1600 *1601 * @uses WP_PROXY_BYPASS_HOSTS1602 * @since unknown1603 *1604 * @param string $uri URI to check.1605 * @return bool True, to send through the proxy and false if, the proxy should not be used.1606 */1607 function send_through_proxy( $uri ) {1608 // parse_url() only handles http, https type URLs, and will emit E_WARNING on failure.1609 // This will be displayed on blogs, which is not reasonable.1610 $check = @parse_url($uri);1611 1612 // Malformed URL, can not process, but this could mean ssl, so let through anyway.1613 if ( $check === false )1614 return true;1615 1616 $home = parse_url( get_option('siteurl') );1617 1618 if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] )1619 return false;1620 1621 if ( !defined('WP_PROXY_BYPASS_HOSTS') )1622 return true;1623 1624 static $bypass_hosts;1625 if ( null == $bypass_hosts )1626 $bypass_hosts = preg_split('|,\s*|', WP_PROXY_BYPASS_HOSTS);1627 1628 return !in_array( $check['host'], $bypass_hosts );1629 }1630 }1631 /**1632 * Internal representation of a single cookie.1633 *1634 * Returned cookies are represented using this class, and when cookies are set, if they are not1635 * already a WP_Http_Cookie() object, then they are turned into one.1636 *1637 * @todo The WordPress convention is to use underscores instead of camelCase for function and method1638 * names. Need to switch to use underscores instead for the methods.1639 *1640 * @package WordPress1641 * @subpackage HTTP1642 * @since 2.8.01643 * @author Beau Lebens1644 */1645 class WP_Http_Cookie {1646 1647 /**1648 * Cookie name.1649 *1650 * @since 2.8.01651 * @var string1652 */1653 var $name;1654 1655 /**1656 * Cookie value.1657 *1658 * @since 2.8.01659 * @var string1660 */1661 var $value;1662 1663 /**1664 * When the cookie expires.1665 *1666 * @since 2.8.01667 * @var string1668 */1669 var $expires;1670 1671 /**1672 * Cookie URL path.1673 *1674 * @since 2.8.01675 * @var string1676 */1677 var $path;1678 1679 /**1680 * Cookie Domain.1681 *1682 * @since 2.8.01683 * @var string1684 */1685 var $domain;1686 1687 /**1688 * PHP4 style Constructor - Calls PHP5 Style Constructor.1689 *1690 * @access public1691 * @since 2.8.01692 * @param string|array $data Raw cookie data.1693 */1694 function WP_Http_Cookie( $data ) {1695 $this->__construct( $data );1696 }1697 1698 /**1699 * Sets up this cookie object.1700 *1701 * The parameter $data should be either an associative array containing the indices names below1702 * or a header string detailing it.1703 *1704 * If it's an array, it should include the following elements:1705 * <ol>1706 * <li>Name</li>1707 * <li>Value - should NOT be urlencoded already.</li>1708 * <li>Expires - (optional) String or int (UNIX timestamp).</li>1709 * <li>Path (optional)</li>1710 * <li>Domain (optional)</li>1711 * </ol>1712 *1713 * @access public1714 * @since 2.8.01715 *1716 * @param string|array $data Raw cookie data.1717 */1718 function __construct( $data ) {1719 if ( is_string( $data ) ) {1720 // Assume it's a header string direct from a previous request1721 $pairs = explode( ';', $data );1722 1723 // Special handling for first pair; name=value. Also be careful of "=" in value1724 $name = trim( substr( $pairs[0], 0, strpos( $pairs[0], '=' ) ) );1725 $value = substr( $pairs[0], strpos( $pairs[0], '=' ) + 1 );1726 $this->name = $name;1727 $this->value = urldecode( $value );1728 array_shift( $pairs ); //Removes name=value from items.1729 1730 // Set everything else as a property1731 foreach ( $pairs as $pair ) {1732 if ( empty($pair) ) //Handles the cookie ending in ; which results in a empty final pair1733 continue;1734 1735 list( $key, $val ) = explode( '=', $pair );1736 $key = strtolower( trim( $key ) );1737 if ( 'expires' == $key )1738 $val = strtotime( $val );1739 $this->$key = $val;1740 }1741 } else {1742 if ( !isset( $data['name'] ) )1743 return false;1744 1745 // Set properties based directly on parameters1746 $this->name = $data['name'];1747 $this->value = isset( $data['value'] ) ? $data['value'] : '';1748 $this->path = isset( $data['path'] ) ? $data['path'] : '';1749 $this->domain = isset( $data['domain'] ) ? $data['domain'] : '';1750 1751 if ( isset( $data['expires'] ) )1752 $this->expires = is_int( $data['expires'] ) ? $data['expires'] : strtotime( $data['expires'] );1753 else1754 $this->expires = null;1755 }1756 }1757 1758 /**1759 * Confirms that it's OK to send this cookie to the URL checked against.1760 *1761 * Decision is based on RFC 2109/2965, so look there for details on validity.1762 *1763 * @access public1764 * @since 2.8.01765 *1766 * @param string $url URL you intend to send this cookie to1767 * @return boolean TRUE if allowed, FALSE otherwise.1768 */1769 function test( $url ) {1770 // Expires - if expired then nothing else matters1771 if ( time() > $this->expires )1772 return false;1773 1774 // Get details on the URL we're thinking about sending to1775 $url = parse_url( $url );1776 $url['port'] = isset( $url['port'] ) ? $url['port'] : 80;1777 $url['path'] = isset( $url['path'] ) ? $url['path'] : '/';1778 1779 // Values to use for comparison against the URL1780 $path = isset( $this->path ) ? $this->path : '/';1781 $port = isset( $this->port ) ? $this->port : 80;1782 $domain = isset( $this->domain ) ? strtolower( $this->domain ) : strtolower( $url['host'] );1783 if ( false === stripos( $domain, '.' ) )1784 $domain .= '.local';1785 1786 // Host - very basic check that the request URL ends with the domain restriction (minus leading dot)1787 $domain = substr( $domain, 0, 1 ) == '.' ? substr( $domain, 1 ) : $domain;1788 if ( substr( $url['host'], -strlen( $domain ) ) != $domain )1789 return false;1790 1791 // Port - supports "port-lists" in the format: "80,8000,8080"1792 if ( !in_array( $url['port'], explode( ',', $port) ) )1793 return false;1794 1795 // Path - request path must start with path restriction1796 if ( substr( $url['path'], 0, strlen( $path ) ) != $path )1797 return false;1798 1799 return true;1800 }1801 1802 /**1803 * Convert cookie name and value back to header string.1804 *1805 * @access public1806 * @since 2.8.01807 *1808 * @return string Header encoded cookie name and value.1809 */1810 function getHeaderValue() {1811 if ( empty( $this->name ) || empty( $this->value ) )1812 return '';1813 1814 return $this->name . '=' . urlencode( $this->value );1815 }1816 1817 /**1818 * Retrieve cookie header for usage in the rest of the WordPress HTTP API.1819 *1820 * @access public1821 * @since 2.8.01822 *1823 * @return string1824 */1825 function getFullHeader() {1826 return 'Cookie: ' . $this->getHeaderValue();1827 }1828 }1829 1830 /**1831 * Implementation for deflate and gzip transfer encodings.1832 *1833 * Includes RFC 1950, RFC 1951, and RFC 1952.1834 *1835 * @since 2.81836 * @package WordPress1837 * @subpackage HTTP1838 */1839 class WP_Http_Encoding {1840 1841 /**1842 * Compress raw string using the deflate format.1843 *1844 * Supports the RFC 1951 standard.1845 *1846 * @since 2.81847 *1848 * @param string $raw String to compress.1849 * @param int $level Optional, default is 9. Compression level, 9 is highest.1850 * @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports.1851 * @return string|bool False on failure.1852 */1853 function compress( $raw, $level = 9, $supports = null ) {1854 return gzdeflate( $raw, $level );1855 }1856 1857 /**1858 * Decompression of deflated string.1859 *1860 * Will attempt to decompress using the RFC 1950 standard, and if that fails1861 * then the RFC 1951 standard deflate will be attempted. Finally, the RFC1862 * 1952 standard gzip decode will be attempted. If all fail, then the1863 * original compressed string will be returned.1864 *1865 * @since 2.81866 *1867 * @param string $compressed String to decompress.1868 * @param int $length The optional length of the compressed data.1869 * @return string|bool False on failure.1870 */1871 function decompress( $compressed, $length = null ) {1872 1873 if ( empty($compressed) )1874 return $compressed;1875 1876 if ( false !== ( $decompressed = @gzinflate( $compressed ) ) )1877 return $decompressed;1878 1879 if ( false !== ( $decompressed = WP_Http_Encoding::compatible_gzinflate( $compressed ) ) )1880 return $decompressed;1881 1882 if ( false !== ( $decompressed = @gzuncompress( $compressed ) ) )1883 return $decompressed;1884 1885 if ( function_exists('gzdecode') ) {1886 $decompressed = @gzdecode( $compressed );1887 1888 if ( false !== $decompressed )1889 return $decompressed;1890 }1891 1892 return $compressed;1893 }1894 1895 /**1896 * Decompression of deflated string while staying compatible with the majority of servers.1897 *1898 * Certain Servers will return deflated data with headers which PHP's gziniflate()1899 * function cannot handle out of the box. The following function lifted from1900 * http://au2.php.net/manual/en/function.gzinflate.php#77336 will attempt to deflate1901 * the various return forms used.1902 *1903 * @since 2.8.11904 * @link http://au2.php.net/manual/en/function.gzinflate.php#773361905 *1906 * @param string $gzData String to decompress.1907 * @return string|bool False on failure.1908 */1909 function compatible_gzinflate($gzData) {1910 if ( substr($gzData, 0, 3) == "\x1f\x8b\x08" ) {1911 $i = 10;1912 $flg = ord( substr($gzData, 3, 1) );1913 if ( $flg > 0 ) {1914 if ( $flg & 4 ) {1915 list($xlen) = unpack('v', substr($gzData, $i, 2) );1916 $i = $i + 2 + $xlen;1917 }1918 if ( $flg & 8 )1919 $i = strpos($gzData, "\0", $i) + 1;1920 if ( $flg & 16 )1921 $i = strpos($gzData, "\0", $i) + 1;1922 if ( $flg & 2 )1923 $i = $i + 2;1924 }1925 return gzinflate( substr($gzData, $i, -8) );1926 } else {1927 return false;1928 }1929 }1930 1931 /**1932 * What encoding types to accept and their priority values.1933 *1934 * @since 2.81935 *1936 * @return string Types of encoding to accept.1937 */1938 function accept_encoding() {1939 $type = array();1940 if ( function_exists( 'gzinflate' ) )1941 $type[] = 'deflate;q=1.0';1942 1943 if ( function_exists( 'gzuncompress' ) )1944 $type[] = 'compress;q=0.5';1945 1946 if ( function_exists( 'gzdecode' ) )1947 $type[] = 'gzip;q=0.5';1948 1949 return implode(', ', $type);1950 }1951 1952 /**1953 * What enconding the content used when it was compressed to send in the headers.1954 *1955 * @since 2.81956 *1957 * @return string Content-Encoding string to send in the header.1958 */1959 function content_encoding() {1960 return 'deflate';1961 }1962 1963 /**1964 * Whether the content be decoded based on the headers.1965 *1966 * @since 2.81967 *1968 * @param array|string $headers All of the available headers.1969 * @return bool1970 */1971 function should_decode($headers) {1972 if ( is_array( $headers ) ) {1973 if ( array_key_exists('content-encoding', $headers) && ! empty( $headers['content-encoding'] ) )1974 return true;1975 } else if ( is_string( $headers ) ) {1976 return ( stripos($headers, 'content-encoding:') !== false );1977 }1978 1979 return false;1980 }1981 1982 /**1983 * Whether decompression and compression are supported by the PHP version.1984 *1985 * Each function is tested instead of checking for the zlib extension, to1986 * ensure that the functions all exist in the PHP version and aren't1987 * disabled.1988 *1989 * @since 2.81990 *1991 * @return bool1992 */1993 function is_available() {1994 return ( function_exists('gzuncompress') || function_exists('gzdeflate') || function_exists('gzinflate') );1995 }1996 }1997 1998 /**1999 16 * Returns the initialized WP_Http Object 2000 17 * … … 2006 23 function &_wp_http_get_object() { 2007 24 static $http; 25 26 if ( ! class_exists('WP_Http') ) 27 require( ABSPATH . WPINC . '/class-http.php' ); 2008 28 2009 29 if ( is_null($http) )
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