1088 lines
33 KiB
PHP
1088 lines
33 KiB
PHP
<?php
|
|
/**
|
|
* Simple and uniform HTTP request API.
|
|
*
|
|
* Will eventually replace and standardize the WordPress HTTP requests made.
|
|
*
|
|
* @package WordPress
|
|
* @subpackage HTTP
|
|
* @since 2.7
|
|
* @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.
|
|
*
|
|
* @package WordPress
|
|
* @subpackage HTTP
|
|
* @since 2.7
|
|
*/
|
|
class WP_Http {
|
|
|
|
/**
|
|
* PHP4 style Constructor - Calls PHP5 Style Constructor
|
|
*
|
|
* @since 2.7
|
|
* @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
|
|
* @return WP_Http
|
|
*/
|
|
function __construct() {
|
|
WP_Http::_getTransport();
|
|
WP_Http::_postTransport();
|
|
}
|
|
|
|
/**
|
|
* Tests the WordPress HTTP objects for an object to use and returns it.
|
|
*
|
|
* Tests all of the objects and returns the object that passes. Also caches
|
|
* that object to be used later.
|
|
*
|
|
* The order for the GET/HEAD requests are Streams, HTTP Extension, Fopen,
|
|
* and finally Fsockopen. fsockopen() is used last, because it has the most
|
|
* overhead in its implementation. There isn't any real way around it, since
|
|
* redirects have to be supported, much the same way the other transports
|
|
* also handle redirects.
|
|
*
|
|
* There are currently issues with "localhost" not resolving correctly with
|
|
* DNS. This may cause an error "failed to open stream: A connection attempt
|
|
* failed because the connected party did not properly respond after a
|
|
* period of time, or established connection failed because connected host
|
|
* has failed to respond."
|
|
*
|
|
* @since 2.7
|
|
* @access private
|
|
*
|
|
* @return object|null Null if no transports are available, HTTP transport object.
|
|
*/
|
|
function &_getTransport() {
|
|
static $working_transport;
|
|
|
|
if ( is_null($working_transport) ) {
|
|
if ( true === WP_Http_Streams::test() )
|
|
$working_transport = new WP_Http_Streams();
|
|
else if ( true === WP_Http_ExtHttp::test() )
|
|
$working_transport = new WP_Http_ExtHttp();
|
|
else if ( true === WP_Http_Fopen::test() )
|
|
$working_transport = new WP_Http_Fopen();
|
|
else if ( true === WP_Http_Fsockopen::test() )
|
|
$working_transport = new WP_Http_Fsockopen();
|
|
}
|
|
|
|
return $working_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
|
|
* @access private
|
|
*
|
|
* @return object|null Null if no transports are available, HTTP transport object.
|
|
*/
|
|
function &_postTransport() {
|
|
static $working_transport;
|
|
|
|
if ( is_null($working_transport) ) {
|
|
if ( true === WP_Http_Streams::test() )
|
|
$working_transport = new WP_Http_Streams();
|
|
else if ( true === WP_Http_ExtHttp::test() )
|
|
$working_transport = new WP_Http_ExtHttp();
|
|
else if ( true === WP_Http_Fsockopen::test() )
|
|
$working_transport = new WP_Http_Fsockopen();
|
|
}
|
|
|
|
return $working_transport;
|
|
}
|
|
|
|
/**
|
|
* Send a HTTP request to a URI.
|
|
*
|
|
* 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
|
|
*
|
|
* @param string $url URI resource.
|
|
* @param str|array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return boolean
|
|
*/
|
|
function request($url, $args = array(), $headers = null, $body = null) {
|
|
global $wp_version;
|
|
|
|
$defaults = array(
|
|
'method' => 'GET', 'timeout' => 3,
|
|
'redirection' => 5, 'httpversion' => '1.0',
|
|
'user-agent' => apply_filters('http_headers_useragent', 'WordPress/' . $wp_version ),
|
|
'blocking' => true
|
|
);
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
|
|
if ( ! is_null($headers) && ! is_array($headers) ) {
|
|
$processedHeaders = WP_Http::processHeaders($headers);
|
|
$headers = $processedHeaders['headers'];
|
|
} else {
|
|
$headers = array();
|
|
}
|
|
|
|
if ( ! isset($headers['user-agent']) || ! isset($headers['User-Agent']) )
|
|
$headers['user-agent'] = $r['user-agent'];
|
|
|
|
if ( is_null($body) || count($headers) > 1 )
|
|
$transport = WP_Http::_getTransport();
|
|
else
|
|
$transport = WP_Http::_postTransport();
|
|
|
|
return $transport->request($url, $headers, $body, $r);
|
|
}
|
|
|
|
/**
|
|
* Uses the POST HTTP method.
|
|
*
|
|
* Used for sending data that is expected to be in the body.
|
|
*
|
|
* @access public
|
|
* @since 2.7
|
|
*
|
|
* @param string $url URI resource.
|
|
* @param str|array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return boolean
|
|
*/
|
|
function post($url, $args = array(), $headers = null, $body = null) {
|
|
$defaults = array('method' => 'POST');
|
|
$r = wp_parse_args( $args, $defaults );
|
|
return $this->request($url, $headers, $body, $r);
|
|
}
|
|
|
|
/**
|
|
* Uses the GET HTTP method.
|
|
*
|
|
* Used for sending data that is expected to be in the body.
|
|
*
|
|
* @access public
|
|
* @since 2.7
|
|
*
|
|
* @param string $url URI resource.
|
|
* @param str|array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return boolean
|
|
*/
|
|
function get($url, $args = array(), $headers = null, $body = null) {
|
|
$defaults = array('method' => 'GET');
|
|
$r = wp_parse_args( $args, $defaults );
|
|
return $this->request($url, $headers, $body, $r);
|
|
}
|
|
|
|
/**
|
|
* Uses the HEAD HTTP method.
|
|
*
|
|
* Used for sending data that is expected to be in the body.
|
|
*
|
|
* @access public
|
|
* @since 2.7
|
|
*
|
|
* @param string $url URI resource.
|
|
* @param str|array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return boolean
|
|
*/
|
|
function head($url, $args = array(), $headers = null, $body = null) {
|
|
$defaults = array('method' => 'HEAD');
|
|
$r = wp_parse_args( $args, $defaults );
|
|
return $this->request($url, $r, $headers, $body);
|
|
}
|
|
|
|
/**
|
|
* Parses the responses and splits the parts into headers and body.
|
|
*
|
|
* @access public
|
|
* @static
|
|
* @since 2.7
|
|
*
|
|
* @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);
|
|
}
|
|
|
|
/**
|
|
* Whether response code is in the 400 range.
|
|
*
|
|
* @access public
|
|
* @static
|
|
* @since 2.7
|
|
*
|
|
* @param array $response Array with code and message keys
|
|
* @return bool True if 40x Response, false if something else.
|
|
*/
|
|
function is400Response($response) {
|
|
if ( (int) substr($response, 0, 1) == 4 )
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Whether the headers returned a redirect location.
|
|
*
|
|
* Actually just checks whether the location header exists.
|
|
*
|
|
* @access public
|
|
* @static
|
|
* @since 2.7
|
|
*
|
|
* @param array $headers Array with headers
|
|
* @return bool True if Location header is found.
|
|
*/
|
|
function isRedirect($headers) {
|
|
if ( isset($headers['location']) )
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Transform header string into an array.
|
|
*
|
|
* If an array is given, then it will be immediately passed through with no
|
|
* changes. This is to prevent overhead in processing headers that don't
|
|
* need to be processed. That and it is unknown what kind of effect
|
|
* processing the array will have since there is no checking done on whether
|
|
* ':' does not exist within the array string.
|
|
*
|
|
* Checking could be added, but it is easier and faster to just passed the
|
|
* array through and assume that it has already been processed.
|
|
*
|
|
* @access public
|
|
* @static
|
|
* @since 2.7
|
|
*
|
|
* @param string|array $headers
|
|
* @return array Processed string headers
|
|
*/
|
|
function processHeaders($headers) {
|
|
if ( is_array($headers) )
|
|
return $headers;
|
|
|
|
$headers = explode("\n", str_replace(array("\r\n", "\r"), "\n", $headers) );
|
|
|
|
$response = array('code' => 0, 'message' => '');
|
|
|
|
$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) )
|
|
$newheaders[strtolower($key)] = trim($value);
|
|
}
|
|
|
|
return array('response' => $response, 'headers' => $newheaders);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
class WP_Http_Fsockopen {
|
|
/**
|
|
* Send a HTTP request to a URI using fsockopen().
|
|
*
|
|
* Does not support non-blocking mode.
|
|
*
|
|
* @see WP_Http::retrieve For default options descriptions.
|
|
*
|
|
* @since 2.7
|
|
* @access public
|
|
* @param string $url URI resource.
|
|
* @param str|array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return array 'headers', 'body', and 'response' keys.
|
|
*/
|
|
function request($url, $args = array(), $headers = null, $body = null) {
|
|
$defaults = array(
|
|
'method' => 'GET', 'timeout' => 3,
|
|
'redirection' => 5, 'httpversion' => '1.0',
|
|
'blocking' => true
|
|
);
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
|
|
$iError = null; // Store error number
|
|
$strError = null; // Store error string
|
|
|
|
$arrURL = parse_url($url);
|
|
|
|
$secure_transport = false;
|
|
|
|
if ( ! isset($arrURL['port']) ) {
|
|
if ( ($arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https') && extension_loaded('openssl') ) {
|
|
$arrURL['host'] = 'ssl://' . $arrURL['host'];
|
|
$arrURL['port'] = apply_filters('http_request_port', 443);
|
|
$secure_transport = true;
|
|
} else {
|
|
$arrURL['port'] = apply_filters('http_request_default_port', 80);
|
|
}
|
|
} else {
|
|
$arrURL['port'] = apply_filters('http_request_port', $arrURL['port']);
|
|
}
|
|
|
|
// 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);
|
|
|
|
$handle = fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, apply_filters('http_request_timeout', absint($r['timeout']) ) );
|
|
|
|
if ( false === $handle )
|
|
return new WP_Error('http_request_failed', $iError . ': ' . $strError);
|
|
|
|
$requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );
|
|
$requestPath = empty($requestPath) ? '/' : $requestPath;
|
|
|
|
$strHeaders = '';
|
|
$strHeaders .= strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
|
|
$strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
|
|
|
|
if ( is_array($header) ) {
|
|
foreach ( (array) $this->getHeaders() as $header => $headerValue )
|
|
$strHeaders .= $header . ': ' . $headerValue . "\r\n";
|
|
} else {
|
|
$strHeaders .= $header;
|
|
}
|
|
|
|
$strHeaders .= "\r\n";
|
|
|
|
if ( ! is_null($body) )
|
|
$strHeaders .= $body;
|
|
|
|
fwrite($handle, $strHeaders);
|
|
|
|
if ( ! $r['blocking'] ) {
|
|
fclose($handle);
|
|
return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
|
|
}
|
|
|
|
$strResponse = '';
|
|
while ( ! feof($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']);
|
|
|
|
if ( WP_Http::is400Response($arrHeaders['response']) )
|
|
return new WP_Error('http_request_failed', $arrHeaders['response']['code'] . ': ' . $arrHeaders['response']['message']);
|
|
|
|
if ( isset($arrHeaders['headers']['location']) ) {
|
|
if ( $r['redirection']-- > 0 )
|
|
return $this->request($arrHeaders['headers']['location'], $r, $headers, $body);
|
|
else
|
|
return new WP_Error('http_request_failed', __('Too many redirects.'));
|
|
}
|
|
|
|
return array('headers' => $arrHeaders['headers'], 'body' => $process['body'], 'response' => $arrHeaders['response']);
|
|
}
|
|
|
|
/**
|
|
* Whether this class can be used for retrieving an URL.
|
|
*
|
|
* @since 2.7
|
|
* @static
|
|
* @return boolean False means this class can not be used, true means it can.
|
|
*/
|
|
function test() {
|
|
if ( function_exists( 'fsockopen' ) )
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
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
|
|
*
|
|
* @param string $url URI resource.
|
|
* @param str|array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return array 'headers', 'body', and 'response' keys.
|
|
*/
|
|
function request($url, $args = array(), $headers = null, $body = null) {
|
|
global $http_response_header;
|
|
|
|
$defaults = array(
|
|
'method' => 'GET', 'timeout' => 3,
|
|
'redirection' => 5, 'httpversion' => '1.0',
|
|
'blocking' => true
|
|
);
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
|
|
$arrURL = parse_url($url);
|
|
|
|
if ( 'http' != $arrURL['scheme'] || 'https' != $arrURL['scheme'] )
|
|
$url = str_replace($arrURL['scheme'], 'http', $url);
|
|
|
|
$handle = fopen($url, 'rb');
|
|
|
|
if (! $handle)
|
|
return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));
|
|
|
|
if ( function_exists('stream_set_timeout') )
|
|
stream_set_timeout($handle, apply_filters('http_request_timeout', $r['timeout']) );
|
|
|
|
if ( ! $r['blocking'] ) {
|
|
fclose($handle);
|
|
return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
|
|
}
|
|
|
|
$strResponse = '';
|
|
while ( ! feof($handle) )
|
|
$strResponse .= fread($handle, 4096);
|
|
|
|
fclose($handle);
|
|
|
|
$theHeaders = '';
|
|
if ( function_exists('stream_get_meta_data') ) {
|
|
$meta = stream_get_meta_data($handle);
|
|
$theHeaders = $meta['wrapper_data'];
|
|
} else {
|
|
$theHeaders = $http_response_header;
|
|
}
|
|
$processedHeaders = WP_Http::processHeaders($theHeaders);
|
|
|
|
return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response']);
|
|
}
|
|
|
|
/**
|
|
* Whether this class can be used for retrieving an URL.
|
|
*
|
|
* @static
|
|
* @return boolean False means this class can not be used, true means it can.
|
|
*/
|
|
function test() {
|
|
if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) )
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
class WP_Http_Streams {
|
|
/**
|
|
* Send a HTTP request to a URI using streams with fopen().
|
|
*
|
|
* @access public
|
|
* @since 2.7
|
|
*
|
|
* @param string $url
|
|
* @param str|array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return array 'headers', 'body', and 'response' keys.
|
|
*/
|
|
function request($url, $args = array(), $headers = null, $body = null) {
|
|
$defaults = array(
|
|
'method' => 'GET', 'timeout' => 3,
|
|
'redirection' => 5, 'httpversion' => '1.0',
|
|
'blocking' => true
|
|
);
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
|
|
$arrURL = parse_url($url);
|
|
|
|
if ( 'http' != $arrURL['scheme'] || 'https' != $arrURL['scheme'] )
|
|
$url = str_replace($arrURL['scheme'], 'http', $url);
|
|
|
|
$arrContext = array('http' =>
|
|
array(
|
|
'method' => strtoupper($r['method']),
|
|
'user-agent' => $headers['User-Agent'],
|
|
'max_redirects' => $r['redirection'],
|
|
'protocol_version' => (float) $r['httpversion'],
|
|
'header' => $headers
|
|
)
|
|
);
|
|
|
|
if ( ! is_null($body) )
|
|
$arrContext['http']['content'] = $body;
|
|
|
|
$context = stream_context_create($arrContext);
|
|
|
|
$handle = fopen($url, 'rb', false, $context);
|
|
|
|
stream_set_timeout($handle, apply_filters('http_request_stream_timeout', $this->timeout) );
|
|
|
|
if ( ! $handle)
|
|
return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));
|
|
|
|
if ( ! $r['blocking'] ) {
|
|
fclose($handle);
|
|
return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
|
|
}
|
|
|
|
$strResponse = stream_get_contents($handle);
|
|
$meta = stream_get_meta_data($handle);
|
|
$processedHeaders = WP_Http::processHeaders($meta['wrapper_data']);
|
|
|
|
fclose($handle);
|
|
|
|
return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response']);
|
|
}
|
|
|
|
/**
|
|
* Whether this class can be used for retrieving an URL.
|
|
*
|
|
* @static
|
|
* @access public
|
|
* @since 2.7
|
|
*
|
|
* @return boolean False means this class can not be used, true means it can.
|
|
*/
|
|
function test() {
|
|
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;
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
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.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return array 'headers', 'body', and 'response' keys.
|
|
*/
|
|
function request($url, $args = array(), $headers = null, $body = null) {
|
|
global $wp_version;
|
|
|
|
$defaults = array(
|
|
'method' => 'GET', 'timeout' => 3,
|
|
'redirection' => 5, 'httpversion' => '1.0',
|
|
'blocking' => true
|
|
);
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
|
|
if ( isset($headers['User-Agent']) ) {
|
|
$r['user-agent'] = $headers['User-Agent'];
|
|
unset($headers['User-Agent']);
|
|
} else if( isset($headers['user-agent']) ) {
|
|
$r['user-agent'] = $headers['user-agent'];
|
|
unset($headers['user-agent']);
|
|
} else {
|
|
$r['user-agent'] = apply_filters('http_headers_useragent', 'WordPress/' . $wp_version );
|
|
}
|
|
|
|
switch ( $r['method'] ) {
|
|
case 'GET':
|
|
$r['method'] = HTTP_METH_GET;
|
|
break;
|
|
case 'POST':
|
|
$r['method'] = HTTP_METH_POST;
|
|
break;
|
|
case 'HEAD':
|
|
$r['method'] = HTTP_METH_HEAD;
|
|
break;
|
|
default:
|
|
$r['method'] = HTTP_METH_GET;
|
|
}
|
|
|
|
$arrURL = parse_url($url);
|
|
|
|
if ( 'http' != $arrURL['scheme'] || 'https' != $arrURL['scheme'] )
|
|
$url = str_replace($arrURL['scheme'], 'http', $url);
|
|
|
|
$options = array(
|
|
'timeout' => $r['timeout'],
|
|
'connecttimeout' => $r['timeout'],
|
|
'redirect' => $r['redirection'],
|
|
'useragent' => $r['user_agent'],
|
|
'headers' => $headers,
|
|
);
|
|
|
|
$strResponse = http_request($r['method'], $url, $body, $options, $info);
|
|
|
|
if ( false === $strResponse )
|
|
return new WP_Error('http_request_failed', $info['response_code'] . ': ' . $info['error']);
|
|
|
|
if ( ! $r['blocking'] )
|
|
return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
|
|
|
|
list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2);
|
|
$theHeaders = WP_Http::processHeaders($theHeaders);
|
|
|
|
$theResponse = array();
|
|
$theResponse['response']['code'] = $info['response_code'];
|
|
$theResponse['response']['message'] = get_status_header_desc($info['response_code']);
|
|
|
|
return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $theResponse);
|
|
}
|
|
|
|
/**
|
|
* Whether this class can be used for retrieving an URL.
|
|
*
|
|
* @static
|
|
* @since 2.7
|
|
*
|
|
* @return boolean False means this class can not be used, true means it can.
|
|
*/
|
|
function test() {
|
|
if ( function_exists('http_request') )
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*
|
|
* @param string $url
|
|
* @param str|array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs. Expects sanitized.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return array 'headers', 'body', and 'response' keys.
|
|
*/
|
|
function request($url, $args = array(), $headers = null, $body = null) {
|
|
global $wp_version;
|
|
|
|
$defaults = array(
|
|
'method' => 'GET', 'timeout' => 3,
|
|
'redirection' => 5, 'httpversion' => '1.0',
|
|
'blocking' => true
|
|
);
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
|
|
if ( isset($headers['User-Agent']) ) {
|
|
$r['user-agent'] = $headers['User-Agent'];
|
|
unset($headers['User-Agent']);
|
|
} else if( isset($headers['user-agent']) ) {
|
|
$r['user-agent'] = $headers['user-agent'];
|
|
unset($headers['user-agent']);
|
|
} else {
|
|
$r['user-agent'] = apply_filters('http_headers_useragent', 'WordPress/' . $wp_version );
|
|
}
|
|
|
|
$handle = curl_init();
|
|
curl_setopt( $handle, CURLOPT_URL, $url);
|
|
|
|
if ( true === $r['blocking'] ) {
|
|
curl_setopt( $handle, CURLOPT_HEADER, true );
|
|
} else {
|
|
curl_setopt( $handle, CURLOPT_HEADER, false );
|
|
curl_setopt( $handle, CURLOPT_NOBODY, true );
|
|
}
|
|
|
|
curl_setopt( $handle, CURLOPT_RETURNTRANSFER, 1 );
|
|
curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] );
|
|
curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, 1 );
|
|
curl_setopt( $handle, CURLOPT_TIMEOUT, $r['timeout'] );
|
|
curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, true );
|
|
curl_setopt( $handle, CURLOPT_MAXREDIRS, $r['redirection'] );
|
|
|
|
if( ! is_null($headers) )
|
|
curl_setopt( $handle, CURLOPT_HTTPHEADER, $headers );
|
|
|
|
if ( $r['httpversion'] == '1.0' )
|
|
curl_setopt( $headle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0 );
|
|
else
|
|
curl_setopt( $headle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );
|
|
|
|
if ( ! $r['blocking'] ) {
|
|
curl_close( $handle );
|
|
return array( 'headers' => array(), 'body' => '', 'response' => array('code', 'message') );
|
|
}
|
|
|
|
$theResponse = curl_exec( $handle );
|
|
|
|
list($theHeaders, $theBody) = explode("\r\n\r\n", $strResponse, 2);
|
|
$theHeaders = WP_Http::processHeaders($theHeaders);
|
|
|
|
$response = array();
|
|
$response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE );
|
|
$response['message'] = get_status_header_desc($response['code']);
|
|
|
|
curl_close( $handle );
|
|
|
|
return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $response);
|
|
}
|
|
|
|
/**
|
|
* Whether this class can be used for retrieving an URL.
|
|
*
|
|
* @static
|
|
* @since 2.7
|
|
*
|
|
* @return boolean False means this class can not be used, true means it can.
|
|
*/
|
|
function test() {
|
|
if ( function_exists('curl_init') )
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the initialized WP_Http Object
|
|
*
|
|
* @since 2.7
|
|
* @access private
|
|
*
|
|
* @return WP_Http HTTP Transport object.
|
|
*/
|
|
function &_wp_http_get_object() {
|
|
static $http;
|
|
|
|
if ( is_null($http) )
|
|
$http = new WP_Http();
|
|
|
|
return $http;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the raw response from the HTTP request.
|
|
*
|
|
* The array structure is a little complex.
|
|
*
|
|
* <code>
|
|
* $res = array( 'headers' =>
|
|
* 'response' => array('code', 'message'),
|
|
* 'headers' => array()
|
|
* );
|
|
* </code>
|
|
*
|
|
* All of the headers in $res['headers']['headers'] are with the name as the key
|
|
* and the value as the value. So to get the User-Agent, you would do the
|
|
* following.
|
|
*
|
|
* <code>
|
|
* $user_agent = $res['headers']['headers']['user-agent'];
|
|
* </code>
|
|
*
|
|
* The body is the raw response content and can be retrieved from $res['body'].
|
|
*
|
|
* This function is called first to make the request and there are other API
|
|
* functions to abstract out the above convoluted setup.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param string $url Site URL to retrieve.
|
|
* @param array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return string The body of the response
|
|
*/
|
|
function wp_remote_request($url, $args = array(), $headers = null, $body = null) {
|
|
$objFetchSite = _wp_http_get_object();
|
|
|
|
return $objFetchSite->request($url, $headers, $body, $args);
|
|
}
|
|
|
|
/**
|
|
* Retrieve the raw response from the HTTP request using the GET method.
|
|
*
|
|
* @see wp_remote_request() For more information on the response array format.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param string $url Site URL to retrieve.
|
|
* @param array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return string The body of the response
|
|
*/
|
|
function wp_remote_get($url, $args = array(), $headers = null, $body = null) {
|
|
$objFetchSite = _wp_http_get_object();
|
|
|
|
return $objFetchSite->get($url, $headers, $body, $args);
|
|
}
|
|
|
|
/**
|
|
* Retrieve the raw response from the HTTP request using the POST method.
|
|
*
|
|
* @see wp_remote_request() For more information on the response array format.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param string $url Site URL to retrieve.
|
|
* @param array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return string The body of the response
|
|
*/
|
|
function wp_remote_post($url, $args = array(), $headers = null, $body = null) {
|
|
$objFetchSite = _wp_http_get_object();
|
|
|
|
return $objFetchSite->post($url, $headers, $body, $args);
|
|
}
|
|
|
|
/**
|
|
* Retrieve the raw response from the HTTP request using the HEAD method.
|
|
*
|
|
* @see wp_remote_request() For more information on the response array format.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param string $url Site URL to retrieve.
|
|
* @param array $args Optional. Override the defaults.
|
|
* @param string|array $headers Optional. Either the header string or array of Header name and value pairs.
|
|
* @param string $body Optional. The body that should be sent. Expected to be already processed.
|
|
* @return string The body of the response
|
|
*/
|
|
function wp_remote_head($url, $args = array(), $headers = null, $body = null) {
|
|
$objFetchSite = _wp_http_get_object();
|
|
|
|
return $objFetchSite->head($url, $headers, $body, $args);
|
|
}
|
|
|
|
/**
|
|
* Retrieve only the headers from the raw response.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param array $response HTTP response.
|
|
* @return array The headers of the response. Empty array if incorrect parameter given.
|
|
*/
|
|
function wp_remote_retrieve_headers(&$response) {
|
|
if ( ! isset($response['headers']) || ! is_array($response['headers']))
|
|
return array();
|
|
|
|
return $response['headers'];
|
|
}
|
|
|
|
/**
|
|
* Retrieve a single header by name from the raw response.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param array $response
|
|
* @param string $header Header name to retrieve value from.
|
|
* @return array The header value. Empty string on if incorrect parameter given.
|
|
*/
|
|
function wp_remote_retrieve_header(&$response, $header) {
|
|
if ( ! isset($response['headers']) || ! is_array($response['headers']))
|
|
return '';
|
|
|
|
if ( array_key_exists($header, $response['headers']) )
|
|
return $response['headers'][$header];
|
|
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Retrieve only the response code from the raw response.
|
|
*
|
|
* Will return an empty array if incorrect parameter value is given.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param array $response HTTP response.
|
|
* @return array The keys 'code' and 'message' give information on the response.
|
|
*/
|
|
function wp_remote_retrieve_response_code(&$response) {
|
|
if ( ! isset($response['response']) || ! is_array($response['response']))
|
|
return '';
|
|
|
|
return $response['response']['code'];
|
|
}
|
|
|
|
/**
|
|
* Retrieve only the response message from the raw response.
|
|
*
|
|
* Will return an empty array if incorrect parameter value is given.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param array $response HTTP response.
|
|
* @return array The keys 'code' and 'message' give information on the response.
|
|
*/
|
|
function wp_remote_retrieve_response_message(&$response) {
|
|
if ( ! isset($response['response']) || ! is_array($response['response']))
|
|
return '';
|
|
|
|
return $response['response']['message'];
|
|
}
|
|
|
|
/**
|
|
* Retrieve only the body from the raw response.
|
|
*
|
|
* @since 2.7
|
|
*
|
|
* @param array $response HTTP response.
|
|
* @return string The body of the response. Empty string if no body or incorrect parameter given.
|
|
*/
|
|
function wp_remote_retrieve_body(&$response) {
|
|
if ( ! isset($response['body']) )
|
|
return '';
|
|
|
|
return $response['body'];
|
|
}
|
|
|
|
?>
|