X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/f9001779751f83dc8a10e478bfecb4d8dd5f964c..53f4633144ed68c8b8fb5861f992b5489894a940:/wp-includes/class-http.php
diff --git a/wp-includes/class-http.php b/wp-includes/class-http.php
index 5d7f83d8..5c082970 100644
--- a/wp-includes/class-http.php
+++ b/wp-includes/class-http.php
@@ -5,7 +5,7 @@
* Standardizes the HTTP requests for WordPress. Handles cookies, gzip encoding and decoding, chunk
* decoding, if HTTP 1.1 and various other difficult HTTP protocol implementations.
*
- * @link http://trac.wordpress.org/ticket/4779 HTTP API Proposal
+ * @link https://core.trac.wordpress.org/ticket/4779 HTTP API Proposal
*
* @package WordPress
* @subpackage HTTP
@@ -15,22 +15,12 @@
/**
* WordPress HTTP Class for managing HTTP Transports and making HTTP requests.
*
- * This class is called for the functionality of making HTTP requests and replaces Snoopy
- * functionality. There is no available functionality to add HTTP transport implementations, since
- * most of the HTTP transports are added and available for use.
- *
- * 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.
+ * This class is used to consistently make outgoing HTTP requests easy for developers
+ * while still being compatible with the many PHP configurations under which
+ * WordPress runs.
*
* Debugging includes several actions, which pass different variables for debugging the HTTP API.
*
- * http_transport_get_debug - gives working, nonblocking, and blocking transports.
- *
- * http_transport_post_debug - gives working, nonblocking, and blocking transports.
- *
* @package WordPress
* @subpackage HTTP
* @since 2.7.0
@@ -38,207 +28,168 @@
class WP_Http {
/**
- * PHP4 style Constructor - Calls PHP5 Style Constructor
- *
- * @since 2.7.0
- * @return WP_Http
- */
- function WP_Http() {
- $this->__construct();
- }
-
- /**
- * PHP5 style Constructor - Set up 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 set up to save time and will only be created
- * once. This class can be created many times without having to go through the step of finding
- * which transports are available.
- *
- * @since 2.7.0
- * @return WP_Http
- */
- function __construct() {
- WP_Http::_getTransport();
- WP_Http::_postTransport();
- }
-
- /**
- * Tests the WordPress HTTP objects for an object to use and returns it.
- *
- * Tests all of the objects and returns the object that passes. Also caches that object to be
- * used later.
- *
- * The order for the GET/HEAD requests are HTTP Extension, cURL, Streams, Fopen, and finally
- * Fsockopen. fsockopen() is used last, because it has the most overhead in its implementation.
- * There isn't any real way around it, since redirects have to be supported, much the same way
- * the other transports also handle redirects.
- *
- * There are currently issues with "localhost" not resolving correctly with DNS. This may cause
- * an error "failed to open stream: A connection attempt failed because the connected party did
- * not properly respond after a period of time, or established connection failed because [the]
- * connected host has failed to respond."
+ * Send an HTTP request to a URI.
*
- * @since 2.7.0
- * @access private
- *
- * @param array $args Request args, default us an empty array
- * @return object|null Null if no transports are available, HTTP transport object.
- */
- function &_getTransport( $args = array() ) {
- static $working_transport, $blocking_transport, $nonblocking_transport;
-
- if ( is_null($working_transport) ) {
- if ( true === WP_Http_ExtHttp::test($args) ) {
- $working_transport['exthttp'] = new WP_Http_ExtHttp();
- $blocking_transport[] = &$working_transport['exthttp'];
- } else if ( true === WP_Http_Curl::test($args) ) {
- $working_transport['curl'] = new WP_Http_Curl();
- $blocking_transport[] = &$working_transport['curl'];
- } else if ( true === WP_Http_Streams::test($args) ) {
- $working_transport['streams'] = new WP_Http_Streams();
- $blocking_transport[] = &$working_transport['streams'];
- } else if ( true === WP_Http_Fopen::test($args) ) {
- $working_transport['fopen'] = new WP_Http_Fopen();
- $blocking_transport[] = &$working_transport['fopen'];
- } else if ( true === WP_Http_Fsockopen::test($args) ) {
- $working_transport['fsockopen'] = new WP_Http_Fsockopen();
- $blocking_transport[] = &$working_transport['fsockopen'];
- }
-
- foreach ( array('curl', 'streams', 'fopen', 'fsockopen', 'exthttp') as $transport ) {
- if ( isset($working_transport[$transport]) )
- $nonblocking_transport[] = &$working_transport[$transport];
- }
- }
-
- do_action( 'http_transport_get_debug', $working_transport, $blocking_transport, $nonblocking_transport );
-
- if ( isset($args['blocking']) && !$args['blocking'] )
- return $nonblocking_transport;
- else
- return $blocking_transport;
- }
-
- /**
- * Tests the WordPress HTTP objects for an object to use and returns it.
- *
- * Tests all of the objects and returns the object that passes. Also caches
- * that object to be used later. This is for posting content to a URL and
- * is used when there is a body. The plain Fopen Transport can not be used
- * to send content, but the streams transport can. This is a limitation that
- * is addressed here, by just not including that transport.
- *
- * @since 2.7.0
- * @access private
- *
- * @param array $args Request args, default us an empty array
- * @return object|null Null if no transports are available, HTTP transport object.
- */
- function &_postTransport( $args = array() ) {
- static $working_transport, $blocking_transport, $nonblocking_transport;
-
- if ( is_null($working_transport) ) {
- if ( true === WP_Http_ExtHttp::test($args) ) {
- $working_transport['exthttp'] = new WP_Http_ExtHttp();
- $blocking_transport[] = &$working_transport['exthttp'];
- } else if ( true === WP_Http_Curl::test($args) ) {
- $working_transport['curl'] = new WP_Http_Curl();
- $blocking_transport[] = &$working_transport['curl'];
- } else if ( true === WP_Http_Streams::test($args) ) {
- $working_transport['streams'] = new WP_Http_Streams();
- $blocking_transport[] = &$working_transport['streams'];
- } else if ( true === WP_Http_Fsockopen::test($args) ) {
- $working_transport['fsockopen'] = new WP_Http_Fsockopen();
- $blocking_transport[] = &$working_transport['fsockopen'];
- }
-
- foreach ( array('curl', 'streams', 'fsockopen', 'exthttp') as $transport ) {
- if ( isset($working_transport[$transport]) )
- $nonblocking_transport[] = &$working_transport[$transport];
- }
- }
-
- do_action( 'http_transport_post_debug', $working_transport, $blocking_transport, $nonblocking_transport );
-
- if ( isset($args['blocking']) && !$args['blocking'] )
- return $nonblocking_transport;
- else
- return $blocking_transport;
- }
-
- /**
- * Send a HTTP request to a URI.
- *
- * The body and headers are part of the arguments. The 'body' argument is for the body and will
- * accept either a string or an array. The 'headers' argument should be an array, but a string
- * is acceptable. If the 'body' argument is an array, then it will automatically be escaped
- * using http_build_query().
- *
- * The only URI that are supported in the HTTP Transport implementation are the HTTP and HTTPS
- * protocols. HTTP and HTTPS are assumed so the server might not know how to handle the send
- * headers. Other protocols are unsupported and most likely will fail.
- *
- * The defaults are 'method', 'timeout', 'redirection', 'httpversion', 'blocking' and
- * 'user-agent'.
- *
- * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports technically allow
- * others, but should not be assumed. The 'timeout' is used to sent how long the connection
- * should stay open before failing when no response. 'redirection' is used to track how many
- * redirects were taken and used to sent the amount for other transports, but not all transports
- * accept setting that value.
- *
- * The 'httpversion' option is used to sent the HTTP version and accepted values are '1.0', and
- * '1.1' and should be a string. Version 1.1 is not supported, because of chunk response. The
- * 'user-agent' option is the user-agent and is used to replace the default user-agent, which is
- * 'WordPress/WP_Version', where WP_Version is the value from $wp_version.
- *
- * 'blocking' is the default, which is used to tell the transport, whether it should halt PHP
- * while it performs the request or continue regardless. Actually, that isn't entirely correct.
- * Blocking mode really just means whether the fread should just pull what it can whenever it
- * gets bytes or if it should wait until it has enough in the buffer to read or finishes reading
- * the entire content. It doesn't actually always mean that PHP will continue going after making
- * the request.
+ * Please note: The only URI that are supported in the HTTP Transport implementation
+ * are the HTTP and HTTPS protocols.
*
* @access public
* @since 2.7.0
- * @todo Refactor this code. The code in this method extends the scope of its original purpose
- * and should be refactored to allow for cleaner abstraction and reduce duplication of the
- * code. One suggestion is to create a class specifically for the arguments, however
- * preliminary refactoring to this affect has affect more than just the scope of the
- * arguments. Something to ponder at least.
- *
- * @param string $url URI resource.
- * @param str|array $args Optional. Override the defaults.
- * @return array containing 'headers', 'body', 'response', 'cookies'
+ *
+ * @global string $wp_version
+ *
+ * @param string $url The request URL.
+ * @param string|array $args {
+ * Optional. Array or string of HTTP request arguments.
+ *
+ * @type string $method Request method. Accepts 'GET', 'POST', 'HEAD', or 'PUT'.
+ * Some transports technically allow others, but should not be
+ * assumed. Default 'GET'.
+ * @type int $timeout How long the connection should stay open in seconds. Default 5.
+ * @type int $redirection Number of allowed redirects. Not supported by all transports
+ * Default 5.
+ * @type string $httpversion Version of the HTTP protocol to use. Accepts '1.0' and '1.1'.
+ * Default '1.0'.
+ * @type string $user-agent User-agent value sent.
+ * Default WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ).
+ * @type bool $reject_unsafe_urls Whether to pass URLs through {@see wp_http_validate_url()}.
+ * Default false.
+ * @type bool $blocking Whether the calling code requires the result of the request.
+ * If set to false, the request will be sent to the remote server,
+ * and processing returned to the calling code immediately, the caller
+ * will know if the request succeeded or failed, but will not receive
+ * any response from the remote server. Default true.
+ * @type string|array $headers Array or string of headers to send with the request.
+ * Default empty array.
+ * @type array $cookies List of cookies to send with the request. Default empty array.
+ * @type string|array $body Body to send with the request. Default null.
+ * @type bool $compress Whether to compress the $body when sending the request.
+ * Default false.
+ * @type bool $decompress Whether to decompress a compressed response. If set to false and
+ * compressed content is returned in the response anyway, it will
+ * need to be separately decompressed. Default true.
+ * @type bool $sslverify Whether to verify SSL for the request. Default true.
+ * @type string sslcertificates Absolute path to an SSL certificate .crt file.
+ * Default ABSPATH . WPINC . '/certificates/ca-bundle.crt'.
+ * @type bool $stream Whether to stream to a file. If set to true and no filename was
+ * given, it will be droped it in the WP temp dir and its name will
+ * be set using the basename of the URL. Default false.
+ * @type string $filename Filename of the file to write to when streaming. $stream must be
+ * set to true. Default null.
+ * @type int $limit_response_size Size in bytes to limit the response to. Default null.
+ *
+ * }
+ * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'.
+ * A WP_Error instance upon error.
*/
- function request( $url, $args = array() ) {
+ public function request( $url, $args = array() ) {
global $wp_version;
$defaults = array(
'method' => 'GET',
- 'timeout' => apply_filters( 'http_request_timeout', 5),
- 'redirection' => apply_filters( 'http_request_redirection_count', 5),
- 'httpversion' => apply_filters( 'http_request_version', '1.0'),
- 'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ) ),
+ /**
+ * Filter the timeout value for an HTTP request.
+ *
+ * @since 2.7.0
+ *
+ * @param int $timeout_value Time in seconds until a request times out.
+ * Default 5.
+ */
+ 'timeout' => apply_filters( 'http_request_timeout', 5 ),
+ /**
+ * Filter the number of redirects allowed during an HTTP request.
+ *
+ * @since 2.7.0
+ *
+ * @param int $redirect_count Number of redirects allowed. Default 5.
+ */
+ 'redirection' => apply_filters( 'http_request_redirection_count', 5 ),
+ /**
+ * Filter the version of the HTTP protocol used in a request.
+ *
+ * @since 2.7.0
+ *
+ * @param string $version Version of HTTP used. Accepts '1.0' and '1.1'.
+ * Default '1.0'.
+ */
+ 'httpversion' => apply_filters( 'http_request_version', '1.0' ),
+ /**
+ * Filter the user agent value sent with an HTTP request.
+ *
+ * @since 2.7.0
+ *
+ * @param string $user_agent WordPress user agent string.
+ */
+ 'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ) ),
+ /**
+ * Filter whether to pass URLs through wp_http_validate_url() in an HTTP request.
+ *
+ * @since 3.6.0
+ *
+ * @param bool $pass_url Whether to pass URLs through wp_http_validate_url().
+ * Default false.
+ */
+ 'reject_unsafe_urls' => apply_filters( 'http_request_reject_unsafe_urls', false ),
'blocking' => true,
'headers' => array(),
'cookies' => array(),
'body' => null,
'compress' => false,
'decompress' => true,
- 'sslverify' => true
+ 'sslverify' => true,
+ 'sslcertificates' => ABSPATH . WPINC . '/certificates/ca-bundle.crt',
+ 'stream' => false,
+ 'filename' => null,
+ 'limit_response_size' => null,
);
+ // Pre-parse for the HEAD checks.
+ $args = wp_parse_args( $args );
+
+ // By default, Head requests do not cause redirections.
+ if ( isset($args['method']) && 'HEAD' == $args['method'] )
+ $defaults['redirection'] = 0;
+
$r = wp_parse_args( $args, $defaults );
+ /**
+ * Filter the arguments used in an HTTP request.
+ *
+ * @since 2.7.0
+ *
+ * @param array $r An array of HTTP request arguments.
+ * @param string $url The request URL.
+ */
$r = apply_filters( 'http_request_args', $r, $url );
- // Allow plugins to short-circuit the request
+ // The transports decrement this, store a copy of the original value for loop purposes.
+ if ( ! isset( $r['_redirection'] ) )
+ $r['_redirection'] = $r['redirection'];
+
+ /**
+ * Filter whether to preempt an HTTP request's return.
+ *
+ * Returning a truthy value to the filter will short-circuit
+ * the HTTP request and return early with that value.
+ *
+ * @since 2.9.0
+ *
+ * @param bool $preempt Whether to preempt an HTTP request return. Default false.
+ * @param array $r HTTP request arguments.
+ * @param string $url The request URL.
+ */
$pre = apply_filters( 'pre_http_request', false, $r, $url );
if ( false !== $pre )
return $pre;
- $arrURL = parse_url( $url );
+ if ( function_exists( 'wp_kses_bad_protocol' ) ) {
+ if ( $r['reject_unsafe_urls'] )
+ $url = wp_http_validate_url( $url );
+ if ( $url ) {
+ $url = wp_kses_bad_protocol( $url, array( 'http', 'https', 'ssl' ) );
+ }
+ }
+
+ $arrURL = @parse_url( $url );
if ( empty( $url ) || empty( $arrURL['scheme'] ) )
return new WP_Error('http_request_failed', __('A valid URL was not provided.'));
@@ -246,20 +197,40 @@ class WP_Http {
if ( $this->block_request( $url ) )
return new WP_Error( 'http_request_failed', __( 'User has blocked requests through HTTP.' ) );
- // Determine if this is a https call and pass that on to the transport functions
- // so that we can blacklist the transports that do not support ssl verification
+ /*
+ * Determine if this is a https call and pass that on to the transport functions
+ * so that we can blacklist the transports that do not support ssl verification
+ */
$r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl';
- // Determine if this request is to OUR install of WordPress
+ // Determine if this request is to OUR install of WordPress.
$homeURL = parse_url( get_bloginfo( 'url' ) );
- $r['local'] = $homeURL['host'] == $arrURL['host'] || 'localhost' == $arrURL['host'];
+ $r['local'] = 'localhost' == $arrURL['host'] || ( isset( $homeURL['host'] ) && $homeURL['host'] == $arrURL['host'] );
unset( $homeURL );
+ /*
+ * If we are streaming to a file but no filename was given drop it in the WP temp dir
+ * and pick its name using the basename of the $url.
+ */
+ if ( $r['stream'] && empty( $r['filename'] ) ) {
+ $r['filename'] = get_temp_dir() . wp_unique_filename( get_temp_dir(), basename( $url ) );
+ }
+
+ /*
+ * Force some settings if we are streaming to a file and check for existence and perms
+ * of destination directory.
+ */
+ if ( $r['stream'] ) {
+ $r['blocking'] = true;
+ if ( ! wp_is_writable( dirname( $r['filename'] ) ) )
+ return new WP_Error( 'http_request_failed', __( 'Destination directory for file streaming does not exist or is not writable.' ) );
+ }
+
if ( is_null( $r['headers'] ) )
$r['headers'] = array();
if ( ! is_array( $r['headers'] ) ) {
- $processedHeaders = WP_Http::processHeaders( $r['headers'] );
+ $processedHeaders = self::processHeaders( $r['headers'], $url );
$r['headers'] = $processedHeaders['headers'];
}
@@ -273,59 +244,152 @@ class WP_Http {
unset( $r['headers']['user-agent'] );
}
- // Construct Cookie: header if any cookies are set
- WP_Http::buildCookieHeader( $r );
+ if ( '1.1' == $r['httpversion'] && !isset( $r['headers']['connection'] ) ) {
+ $r['headers']['connection'] = 'close';
+ }
- if ( WP_Http_Encoding::is_available() )
- $r['headers']['Accept-Encoding'] = WP_Http_Encoding::accept_encoding();
-
- if ( empty($r['body']) ) {
- $r['body'] = null;
- // Some servers fail when sending content without the content-length header being set.
- // Also, to fix another bug, we only send when doing POST and PUT and the content-length
- // header isn't already set.
- if ( ($r['method'] == 'POST' || $r['method'] == 'PUT') && ! isset( $r['headers']['Content-Length'] ) )
- $r['headers']['Content-Length'] = 0;
-
- // The method is ambiguous, because we aren't talking about HTTP methods, the "get" in
- // this case is simply that we aren't sending any bodies and to get the transports that
- // don't support sending bodies along with those which do.
- $transports = WP_Http::_getTransport( $r );
- } else {
+ // Construct Cookie: header if any cookies are set.
+ self::buildCookieHeader( $r );
+
+ // Avoid issues where mbstring.func_overload is enabled.
+ mbstring_binary_safe_encoding();
+
+ if ( ! isset( $r['headers']['Accept-Encoding'] ) ) {
+ if ( $encoding = WP_Http_Encoding::accept_encoding( $url, $r ) )
+ $r['headers']['Accept-Encoding'] = $encoding;
+ }
+
+ if ( ( ! is_null( $r['body'] ) && '' != $r['body'] ) || 'POST' == $r['method'] || 'PUT' == $r['method'] ) {
if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) {
- if ( ! version_compare(phpversion(), '5.1.2', '>=') )
- $r['body'] = _http_build_query( $r['body'], null, '&' );
- else
- $r['body'] = http_build_query( $r['body'], null, '&' );
- $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' );
- $r['headers']['Content-Length'] = strlen( $r['body'] );
+ $r['body'] = http_build_query( $r['body'], null, '&' );
+
+ if ( ! isset( $r['headers']['Content-Type'] ) )
+ $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' );
}
+ if ( '' === $r['body'] )
+ $r['body'] = null;
+
if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) )
$r['headers']['Content-Length'] = strlen( $r['body'] );
-
- // The method is ambiguous, because we aren't talking about HTTP methods, the "post" in
- // this case is simply that we are sending HTTP body and to get the transports that do
- // support sending the body. Not all do, depending on the limitations of the PHP core
- // limitations.
- $transports = WP_Http::_postTransport( $r );
}
- do_action( 'http_api_debug', $transports, 'transports_list' );
+ $response = $this->_dispatch_request( $url, $r );
- $response = array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
- foreach ( (array) $transports as $transport ) {
- $response = $transport->request( $url, $r );
+ reset_mbstring_encoding();
- do_action( 'http_api_debug', $response, 'response', get_class( $transport ) );
+ if ( is_wp_error( $response ) )
+ return $response;
- if ( ! is_wp_error( $response ) )
- return apply_filters( 'http_response', $response, $r, $url );
+ // Append cookies that were used in this request to the response
+ if ( ! empty( $r['cookies'] ) ) {
+ $cookies_set = wp_list_pluck( $response['cookies'], 'name' );
+ foreach ( $r['cookies'] as $cookie ) {
+ if ( ! in_array( $cookie->name, $cookies_set ) && $cookie->test( $url ) ) {
+ $response['cookies'][] = $cookie;
+ }
+ }
}
return $response;
}
+ /**
+ * Tests which transports are capable of supporting the request.
+ *
+ * @since 3.2.0
+ * @access private
+ *
+ * @param array $args Request arguments
+ * @param string $url URL to Request
+ *
+ * @return string|false Class name for the first transport that claims to support the request. False if no transport claims to support the request.
+ */
+ public function _get_first_available_transport( $args, $url = null ) {
+ /**
+ * Filter which HTTP transports are available and in what order.
+ *
+ * @since 3.7.0
+ *
+ * @param array $value Array of HTTP transports to check. Default array contains
+ * 'curl', and 'streams', in that order.
+ * @param array $args HTTP request arguments.
+ * @param string $url The URL to request.
+ */
+ $request_order = apply_filters( 'http_api_transports', array( 'curl', 'streams' ), $args, $url );
+
+ // Loop over each transport on each HTTP request looking for one which will serve this request's needs.
+ foreach ( $request_order as $transport ) {
+ $class = 'WP_HTTP_' . $transport;
+
+ // Check to see if this transport is a possibility, calls the transport statically.
+ if ( !call_user_func( array( $class, 'test' ), $args, $url ) )
+ continue;
+
+ return $class;
+ }
+
+ return false;
+ }
+
+ /**
+ * Dispatches a HTTP request to a supporting transport.
+ *
+ * Tests each transport in order to find a transport which matches the request arguments.
+ * Also caches the transport instance to be used later.
+ *
+ * The order for requests is cURL, and then PHP Streams.
+ *
+ * @since 3.2.0
+ *
+ * @static
+ * @access private
+ *
+ * @param string $url URL to Request
+ * @param array $args Request arguments
+ * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
+ */
+ private function _dispatch_request( $url, $args ) {
+ static $transports = array();
+
+ $class = $this->_get_first_available_transport( $args, $url );
+ if ( !$class )
+ return new WP_Error( 'http_failure', __( 'There are no HTTP transports available which can complete the requested request.' ) );
+
+ // Transport claims to support request, instantiate it and give it a whirl.
+ if ( empty( $transports[$class] ) )
+ $transports[$class] = new $class;
+
+ $response = $transports[$class]->request( $url, $args );
+
+ /**
+ * Fires after an HTTP API response is received and before the response is returned.
+ *
+ * @since 2.8.0
+ *
+ * @param array|WP_Error $response HTTP response or WP_Error object.
+ * @param string $context Context under which the hook is fired.
+ * @param string $class HTTP transport used.
+ * @param array $args HTTP request arguments.
+ * @param string $url The request URL.
+ */
+ do_action( 'http_api_debug', $response, 'response', $class, $args, $url );
+
+ if ( is_wp_error( $response ) )
+ return $response;
+
+ /**
+ * Filter the HTTP API response immediately before the response is returned.
+ *
+ * @since 2.9.0
+ *
+ * @param array $response HTTP response.
+ * @param array $args HTTP request arguments.
+ * @param string $url The request URL.
+ */
+ return apply_filters( 'http_response', $response, $args, $url );
+ }
+
/**
* Uses the POST HTTP method.
*
@@ -334,11 +398,11 @@ class WP_Http {
* @access public
* @since 2.7.0
*
- * @param string $url URI resource.
- * @param str|array $args Optional. Override the defaults.
- * @return boolean
+ * @param string $url The request URL.
+ * @param string|array $args Optional. Override the defaults.
+ * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
*/
- function post($url, $args = array()) {
+ public function post($url, $args = array()) {
$defaults = array('method' => 'POST');
$r = wp_parse_args( $args, $defaults );
return $this->request($url, $r);
@@ -352,11 +416,11 @@ class WP_Http {
* @access public
* @since 2.7.0
*
- * @param string $url URI resource.
- * @param str|array $args Optional. Override the defaults.
- * @return boolean
+ * @param string $url The request URL.
+ * @param string|array $args Optional. Override the defaults.
+ * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
*/
- function get($url, $args = array()) {
+ public function get($url, $args = array()) {
$defaults = array('method' => 'GET');
$r = wp_parse_args( $args, $defaults );
return $this->request($url, $r);
@@ -370,11 +434,11 @@ class WP_Http {
* @access public
* @since 2.7.0
*
- * @param string $url URI resource.
- * @param str|array $args Optional. Override the defaults.
- * @return boolean
+ * @param string $url The request URL.
+ * @param string|array $args Optional. Override the defaults.
+ * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
*/
- function head($url, $args = array()) {
+ public function head($url, $args = array()) {
$defaults = array('method' => 'HEAD');
$r = wp_parse_args( $args, $defaults );
return $this->request($url, $r);
@@ -390,10 +454,10 @@ class WP_Http {
* @param string $strResponse The full response string
* @return array Array with 'headers' and 'body' keys.
*/
- function processResponse($strResponse) {
+ public static function processResponse($strResponse) {
$res = explode("\r\n\r\n", $strResponse, 2);
- return array('headers' => isset($res[0]) ? $res[0] : array(), 'body' => isset($res[1]) ? $res[1] : '');
+ return array('headers' => $res[0], 'body' => isset($res[1]) ? $res[1] : '');
}
/**
@@ -407,24 +471,30 @@ class WP_Http {
* @since 2.7.0
*
* @param string|array $headers
+ * @param string $url The URL that was requested
* @return array Processed string headers. If duplicate headers are encountered,
* Then a numbered array is returned as the value of that header-key.
*/
- function processHeaders($headers) {
- // split headers, one per array element
+ public static function processHeaders( $headers, $url = '' ) {
+ // Split headers, one per array element.
if ( is_string($headers) ) {
- // tolerate line terminator: CRLF = LF (RFC 2616 19.3)
+ // Tolerate line terminator: CRLF = LF (RFC 2616 19.3).
$headers = str_replace("\r\n", "\n", $headers);
- // unfold folded header fields. LWS = [CRLF] 1*( SP | HT ) , (RFC 2616 2.2)
+ /*
+ * Unfold folded header fields. LWS = [CRLF] 1*( SP | HT ) ,
+ * (RFC 2616 2.2).
+ */
$headers = preg_replace('/\n[ \t]/', ' ', $headers);
- // create the headers array
+ // Create the headers array.
$headers = explode("\n", $headers);
}
$response = array('code' => 0, 'message' => '');
- // If a redirection has taken place, The headers for each page request may have been passed.
- // In this case, determine the final HTTP header and parse from there.
+ /*
+ * If a redirection has taken place, The headers for each page request may have been passed.
+ * In this case, determine the final HTTP header and parse from there.
+ */
for ( $i = count($headers)-1; $i >= 0; $i-- ) {
if ( !empty($headers[$i]) && false === strpos($headers[$i], ':') ) {
$headers = array_splice($headers, $i);
@@ -434,40 +504,45 @@ class WP_Http {
$cookies = array();
$newheaders = array();
- foreach ( $headers as $tempheader ) {
+ foreach ( (array) $headers as $tempheader ) {
if ( empty($tempheader) )
continue;
if ( false === strpos($tempheader, ':') ) {
- list( , $response['code'], $response['message']) = explode(' ', $tempheader, 3);
+ $stack = explode(' ', $tempheader, 3);
+ $stack[] = '';
+ list( , $response['code'], $response['message']) = $stack;
continue;
}
list($key, $value) = explode(':', $tempheader, 2);
- if ( !empty( $value ) ) {
- $key = strtolower( $key );
- if ( isset( $newheaders[$key] ) ) {
- if ( !is_array($newheaders[$key]) )
- $newheaders[$key] = array($newheaders[$key]);
- $newheaders[$key][] = trim( $value );
- } else {
- $newheaders[$key] = trim( $value );
- }
- if ( 'set-cookie' == $key )
- $cookies[] = new WP_Http_Cookie( $value );
+ $key = strtolower( $key );
+ $value = trim( $value );
+
+ if ( isset( $newheaders[ $key ] ) ) {
+ if ( ! is_array( $newheaders[ $key ] ) )
+ $newheaders[$key] = array( $newheaders[ $key ] );
+ $newheaders[ $key ][] = $value;
+ } else {
+ $newheaders[ $key ] = $value;
}
+ if ( 'set-cookie' == $key )
+ $cookies[] = new WP_Http_Cookie( $value, $url );
}
+ // Cast the Response Code to an int
+ $response['code'] = intval( $response['code'] );
+
return array('response' => $response, 'headers' => $newheaders, 'cookies' => $cookies);
}
/**
* Takes the arguments for a ::request() and checks for the cookie array.
*
- * If it's found, then it's assumed to contain WP_Http_Cookie objects, which are each parsed
- * into strings and added to the Cookie: header (within the arguments array). Edits the array by
- * reference.
+ * If it's found, then it upgrades any basic name => value pairs to WP_Http_Cookie instances,
+ * which are each parsed into strings and added to the Cookie: header (within the arguments array).
+ * Edits the array by reference.
*
* @access public
* @version 2.8.0
@@ -475,12 +550,19 @@ class WP_Http {
*
* @param array $r Full array of args passed into ::request()
*/
- function buildCookieHeader( &$r ) {
+ public static function buildCookieHeader( &$r ) {
if ( ! empty($r['cookies']) ) {
+ // Upgrade any name => value cookie pairs to WP_HTTP_Cookie instances.
+ foreach ( $r['cookies'] as $name => $value ) {
+ if ( ! is_object( $value ) )
+ $r['cookies'][ $name ] = new WP_HTTP_Cookie( array( 'name' => $name, 'value' => $value ) );
+ }
+
$cookies_header = '';
foreach ( (array) $r['cookies'] as $cookie ) {
$cookies_header .= $cookie->getHeaderValue() . '; ';
}
+
$cookies_header = substr( $cookies_header, 0, -2 );
$r['headers']['cookie'] = $cookies_header;
}
@@ -489,10 +571,10 @@ class WP_Http {
/**
* Decodes chunk transfer-encoding, based off the HTTP 1.1 specification.
*
- * Based off the HTTP http_encoding_dechunk function. Does not support UTF-8. Does not support
- * returning footer headers. Shouldn't be too difficult to support it though.
+ * Based off the HTTP http_encoding_dechunk function.
+ *
+ * @link http://tools.ietf.org/html/rfc2616#section-19.4.6 Process for chunked decoding.
*
- * @todo Add support for footer chunked headers.
* @access public
* @since 2.7.0
* @static
@@ -500,35 +582,33 @@ class WP_Http {
* @param string $body Body content
* @return string Chunked decoded body on success or raw body on failure.
*/
- function chunkTransferDecode($body) {
- $body = str_replace(array("\r\n", "\r"), "\n", $body);
- // The body is not chunked encoding or is malformed.
- if ( ! preg_match( '/^[0-9a-f]+(\s|\n)+/mi', trim($body) ) )
+ public static function chunkTransferDecode( $body ) {
+ // The body is not chunked encoded or is malformed.
+ if ( ! preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', trim( $body ) ) )
return $body;
- $parsedBody = '';
- //$parsedHeaders = array(); Unsupported
+ $parsed_body = '';
- while ( true ) {
- $hasChunk = (bool) preg_match( '/^([0-9a-f]+)(\s|\n)+/mi', $body, $match );
+ // We'll be altering $body, so need a backup in case of error.
+ $body_original = $body;
- if ( $hasChunk ) {
- if ( empty( $match[1] ) )
- return $body;
+ while ( true ) {
+ $has_chunk = (bool) preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', $body, $match );
+ if ( ! $has_chunk || empty( $match[1] ) )
+ return $body_original;
- $length = hexdec( $match[1] );
- $chunkLength = strlen( $match[0] );
+ $length = hexdec( $match[1] );
+ $chunk_length = strlen( $match[0] );
- $strBody = substr($body, $chunkLength, $length);
- $parsedBody .= $strBody;
+ // Parse out the chunk of data.
+ $parsed_body .= substr( $body, $chunk_length, $length );
- $body = ltrim(str_replace(array($match[0], $strBody), '', $body), "\n");
+ // Remove the chunk from the raw data.
+ $body = substr( $body, $length + $chunk_length );
- if ( "0" == trim($body) )
- return $parsedBody; // Ignore footer headers.
- } else {
- return $body;
- }
+ // End of the document.
+ if ( '0' === trim( $body ) )
+ return $parsed_body;
}
}
@@ -545,49 +625,51 @@ class WP_Http {
* are supported, eg *.wordpress.org will allow for all subdomains of wordpress.org to be contacted.
*
* @since 2.8.0
- * @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests.
- * @link http://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_ACCESSIBLE_HOSTS
+ * @link https://core.trac.wordpress.org/ticket/8927 Allow preventing external requests.
+ * @link https://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_ACCESSIBLE_HOSTS
+ *
+ * @staticvar array|null $accessible_hosts
+ * @staticvar array $wildcard_regex
*
* @param string $uri URI of url.
* @return bool True to block, false to allow.
*/
- function block_request($uri) {
+ public function block_request($uri) {
// We don't need to block requests, because nothing is blocked.
if ( ! defined( 'WP_HTTP_BLOCK_EXTERNAL' ) || ! WP_HTTP_BLOCK_EXTERNAL )
return false;
- // parse_url() only handles http, https type URLs, and will emit E_WARNING on failure.
- // This will be displayed on blogs, which is not reasonable.
- $check = @parse_url($uri);
-
- /* Malformed URL, can not process, but this could mean ssl, so let through anyway.
- *
- * This isn't very security sound. There are instances where a hacker might attempt
- * to bypass the proxy and this check. However, the reason for this behavior is that
- * WordPress does not do any checking currently for non-proxy requests, so it is keeps with
- * the default unsecure nature of the HTTP request.
- */
- if ( $check === false )
- return false;
+ $check = parse_url($uri);
+ if ( ! $check )
+ return true;
$home = parse_url( get_option('siteurl') );
- // Don't block requests back to ourselves by default
- if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] )
- return apply_filters('block_local_requests', false);
+ // Don't block requests back to ourselves by default.
+ if ( 'localhost' == $check['host'] || ( isset( $home['host'] ) && $home['host'] == $check['host'] ) ) {
+ /**
+ * Filter whether to block local requests through the proxy.
+ *
+ * @since 2.8.0
+ *
+ * @param bool $block Whether to block local requests through proxy.
+ * Default false.
+ */
+ return apply_filters( 'block_local_requests', false );
+ }
if ( !defined('WP_ACCESSIBLE_HOSTS') )
return true;
- static $accessible_hosts;
- static $wildcard_regex = false;
- if ( null == $accessible_hosts ) {
+ static $accessible_hosts = null;
+ static $wildcard_regex = array();
+ if ( null === $accessible_hosts ) {
$accessible_hosts = preg_split('|,\s*|', WP_ACCESSIBLE_HOSTS);
if ( false !== strpos(WP_ACCESSIBLE_HOSTS, '*') ) {
$wildcard_regex = array();
foreach ( $accessible_hosts as $host )
- $wildcard_regex[] = str_replace('\*', '[\w.]+?', preg_quote($host, '/'));
+ $wildcard_regex[] = str_replace( '\*', '.+', preg_quote( $host, '/' ) );
$wildcard_regex = '/^(' . implode('|', $wildcard_regex) . ')$/i';
}
}
@@ -595,247 +677,228 @@ class WP_Http {
if ( !empty($wildcard_regex) )
return !preg_match($wildcard_regex, $check['host']);
else
- return !in_array( $check['host'], $accessible_hosts ); //Inverse logic, If its in the array, then we can't access it.
-
-
+ return !in_array( $check['host'], $accessible_hosts ); //Inverse logic, If it's in the array, then we can't access it.
}
-}
-/**
- * HTTP request method uses fsockopen function to retrieve the url.
- *
- * This would be the preferred method, but the fsockopen implementation has the most overhead of all
- * the HTTP transport implementations.
- *
- * @package WordPress
- * @subpackage HTTP
- * @since 2.7.0
- */
-class WP_Http_Fsockopen {
/**
- * Send a HTTP request to a URI using fsockopen().
+ * A wrapper for PHP's parse_url() function that handles edgecases in < PHP 5.4.7
*
- * Does not support non-blocking mode.
+ * PHP 5.4.7 expanded parse_url()'s ability to handle non-absolute url's, including
+ * schemeless and relative url's with :// in the path, this works around those
+ * limitations providing a standard output on PHP 5.2~5.4+.
*
- * @see WP_Http::request For default options descriptions.
+ * Error suppression is used as prior to PHP 5.3.3, an E_WARNING would be generated
+ * when URL parsing failed.
*
- * @since 2.7
- * @access public
- * @param string $url URI resource.
- * @param str|array $args Optional. Override the defaults.
- * @return array 'headers', 'body', 'cookies' and 'response' keys.
+ * @since 4.1.0
+ *
+ * @static
+ * @access protected
+ *
+ * @param string $url The URL to parse.
+ * @return bool|array False on failure; Array of URL components on success;
+ * See parse_url()'s return values.
*/
- function request($url, $args = array()) {
- $defaults = array(
- 'method' => 'GET', 'timeout' => 5,
- 'redirection' => 5, 'httpversion' => '1.0',
- 'blocking' => true,
- 'headers' => array(), 'body' => null, 'cookies' => array()
- );
-
- $r = wp_parse_args( $args, $defaults );
-
- if ( isset($r['headers']['User-Agent']) ) {
- $r['user-agent'] = $r['headers']['User-Agent'];
- unset($r['headers']['User-Agent']);
- } else if ( isset($r['headers']['user-agent']) ) {
- $r['user-agent'] = $r['headers']['user-agent'];
- unset($r['headers']['user-agent']);
- }
-
- // Construct Cookie: header if any cookies are set
- WP_Http::buildCookieHeader( $r );
-
- $iError = null; // Store error number
- $strError = null; // Store error string
-
- $arrURL = parse_url($url);
-
- $fsockopen_host = $arrURL['host'];
-
- $secure_transport = false;
-
- if ( ! isset( $arrURL['port'] ) ) {
- if ( ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ) && extension_loaded('openssl') ) {
- $fsockopen_host = "ssl://$fsockopen_host";
- $arrURL['port'] = 443;
- $secure_transport = true;
+ protected static function parse_url( $url ) {
+ $parts = @parse_url( $url );
+ if ( ! $parts ) {
+ // < PHP 5.4.7 compat, trouble with relative paths including a scheme break in the path
+ if ( '/' == $url[0] && false !== strpos( $url, '://' ) ) {
+ // Since we know it's a relative path, prefix with a scheme/host placeholder and try again
+ if ( ! $parts = @parse_url( 'placeholder://placeholder' . $url ) ) {
+ return $parts;
+ }
+ // Remove the placeholder values
+ unset( $parts['scheme'], $parts['host'] );
} else {
- $arrURL['port'] = 80;
+ return $parts;
}
}
- //fsockopen has issues with 'localhost' with IPv6 with certain versions of PHP, It attempts to connect to ::1,
- // which fails when the server is not set up for it. For compatibility, always connect to the IPv4 address.
- if ( 'localhost' == strtolower($fsockopen_host) )
- $fsockopen_host = '127.0.0.1';
-
- // There are issues with the HTTPS and SSL protocols that cause errors that can be safely
- // ignored and should be ignored.
- if ( true === $secure_transport )
- $error_reporting = error_reporting(0);
+ // < PHP 5.4.7 compat, doesn't detect schemeless URL's host field
+ if ( '//' == substr( $url, 0, 2 ) && ! isset( $parts['host'] ) ) {
+ list( $parts['host'], $slashless_path ) = explode( '/', substr( $parts['path'], 2 ), 2 );
+ $parts['path'] = "/{$slashless_path}";
+ }
- $startDelay = time();
+ return $parts;
+ }
- $proxy = new WP_HTTP_Proxy();
+ /**
+ * Converts a relative URL to an absolute URL relative to a given URL.
+ *
+ * If an Absolute URL is provided, no processing of that URL is done.
+ *
+ * @since 3.4.0
+ *
+ * @static
+ * @access public
+ *
+ * @param string $maybe_relative_path The URL which might be relative
+ * @param string $url The URL which $maybe_relative_path is relative to
+ * @return string An Absolute URL, in a failure condition where the URL cannot be parsed, the relative URL will be returned.
+ */
+ public static function make_absolute_url( $maybe_relative_path, $url ) {
+ if ( empty( $url ) )
+ return $maybe_relative_path;
- if ( !WP_DEBUG ) {
- if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
- $handle = @fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );
- else
- $handle = @fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] );
- } else {
- if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
- $handle = fsockopen( $proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );
- else
- $handle = fsockopen( $fsockopen_host, $arrURL['port'], $iError, $strError, $r['timeout'] );
+ if ( ! $url_parts = WP_HTTP::parse_url( $url ) ) {
+ return $maybe_relative_path;
}
- $endDelay = time();
+ if ( ! $relative_url_parts = WP_HTTP::parse_url( $maybe_relative_path ) ) {
+ return $maybe_relative_path;
+ }
- // If the delay is greater than the timeout then fsockopen should't be used, because it will
- // cause a long delay.
- $elapseDelay = ($endDelay-$startDelay) > $r['timeout'];
- if ( true === $elapseDelay )
- add_option( 'disable_fsockopen', $endDelay, null, true );
+ // Check for a scheme on the 'relative' url
+ if ( ! empty( $relative_url_parts['scheme'] ) ) {
+ return $maybe_relative_path;
+ }
- if ( false === $handle )
- return new WP_Error('http_request_failed', $iError . ': ' . $strError);
+ $absolute_path = $url_parts['scheme'] . '://';
- $timeout = (int) floor( $r['timeout'] );
- $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
- stream_set_timeout( $handle, $timeout, $utimeout );
+ // Schemeless URL's will make it this far, so we check for a host in the relative url and convert it to a protocol-url
+ if ( isset( $relative_url_parts['host'] ) ) {
+ $absolute_path .= $relative_url_parts['host'];
+ if ( isset( $relative_url_parts['port'] ) )
+ $absolute_path .= ':' . $relative_url_parts['port'];
+ } else {
+ $absolute_path .= $url_parts['host'];
+ if ( isset( $url_parts['port'] ) )
+ $absolute_path .= ':' . $url_parts['port'];
+ }
- if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) //Some proxies require full URL in this field.
- $requestPath = $url;
- else
- $requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );
+ // Start off with the Absolute URL path.
+ $path = ! empty( $url_parts['path'] ) ? $url_parts['path'] : '/';
- if ( empty($requestPath) )
- $requestPath .= '/';
+ // If it's a root-relative path, then great.
+ if ( ! empty( $relative_url_parts['path'] ) && '/' == $relative_url_parts['path'][0] ) {
+ $path = $relative_url_parts['path'];
- $strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
+ // Else it's a relative path.
+ } elseif ( ! empty( $relative_url_parts['path'] ) ) {
+ // Strip off any file components from the absolute path.
+ $path = substr( $path, 0, strrpos( $path, '/' ) + 1 );
- if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
- $strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";
- else
- $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
+ // Build the new path.
+ $path .= $relative_url_parts['path'];
- if ( isset($r['user-agent']) )
- $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";
+ // Strip all /path/../ out of the path.
+ while ( strpos( $path, '../' ) > 1 ) {
+ $path = preg_replace( '![^/]+/\.\./!', '', $path );
+ }
- if ( is_array($r['headers']) ) {
- foreach ( (array) $r['headers'] as $header => $headerValue )
- $strHeaders .= $header . ': ' . $headerValue . "\r\n";
- } else {
- $strHeaders .= $r['headers'];
+ // Strip any final leading ../ from the path.
+ $path = preg_replace( '!^/(\.\./)+!', '', $path );
}
- if ( $proxy->use_authentication() )
- $strHeaders .= $proxy->authentication_header() . "\r\n";
-
- $strHeaders .= "\r\n";
+ // Add the Query string.
+ if ( ! empty( $relative_url_parts['query'] ) )
+ $path .= '?' . $relative_url_parts['query'];
- if ( ! is_null($r['body']) )
- $strHeaders .= $r['body'];
+ return $absolute_path . '/' . ltrim( $path, '/' );
+ }
- fwrite($handle, $strHeaders);
+ /**
+ * Handles HTTP Redirects and follows them if appropriate.
+ *
+ * @since 3.7.0
+ *
+ * @static
+ *
+ * @param string $url The URL which was requested.
+ * @param array $args The Arguments which were used to make the request.
+ * @param array $response The Response of the HTTP request.
+ * @return false|object False if no redirect is present, a WP_HTTP or WP_Error result otherwise.
+ */
+ public static function handle_redirects( $url, $args, $response ) {
+ // If no redirects are present, or, redirects were not requested, perform no action.
+ if ( ! isset( $response['headers']['location'] ) || 0 === $args['_redirection'] )
+ return false;
- if ( ! $r['blocking'] ) {
- fclose($handle);
- return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
- }
+ // Only perform redirections on redirection http codes.
+ if ( $response['response']['code'] > 399 || $response['response']['code'] < 300 )
+ return false;
- $strResponse = '';
- while ( ! feof($handle) )
- $strResponse .= fread($handle, 4096);
+ // Don't redirect if we've run out of redirects.
+ if ( $args['redirection']-- <= 0 )
+ return new WP_Error( 'http_request_failed', __('Too many redirects.') );
- fclose($handle);
+ $redirect_location = $response['headers']['location'];
- if ( true === $secure_transport )
- error_reporting($error_reporting);
+ // If there were multiple Location headers, use the last header specified.
+ if ( is_array( $redirect_location ) )
+ $redirect_location = array_pop( $redirect_location );
- $process = WP_Http::processResponse($strResponse);
- $arrHeaders = WP_Http::processHeaders($process['headers']);
+ $redirect_location = WP_HTTP::make_absolute_url( $redirect_location, $url );
- // Is the response code within the 400 range?
- if ( (int) $arrHeaders['response']['code'] >= 400 && (int) $arrHeaders['response']['code'] < 500 )
- return new WP_Error('http_request_failed', $arrHeaders['response']['code'] . ': ' . $arrHeaders['response']['message']);
+ // POST requests should not POST to a redirected location.
+ if ( 'POST' == $args['method'] ) {
+ if ( in_array( $response['response']['code'], array( 302, 303 ) ) )
+ $args['method'] = 'GET';
+ }
- // If location is found, then assume redirect and redirect to location.
- if ( 'HEAD' != $r['method'] && isset($arrHeaders['headers']['location']) ) {
- if ( $r['redirection']-- > 0 ) {
- return $this->request($arrHeaders['headers']['location'], $r);
- } else {
- return new WP_Error('http_request_failed', __('Too many redirects.'));
+ // Include valid cookies in the redirect process.
+ if ( ! empty( $response['cookies'] ) ) {
+ foreach ( $response['cookies'] as $cookie ) {
+ if ( $cookie->test( $redirect_location ) )
+ $args['cookies'][] = $cookie;
}
}
- // If the body was chunk encoded, then decode it.
- if ( ! empty( $process['body'] ) && isset( $arrHeaders['headers']['transfer-encoding'] ) && 'chunked' == $arrHeaders['headers']['transfer-encoding'] )
- $process['body'] = WP_Http::chunkTransferDecode($process['body']);
-
- if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($arrHeaders['headers']) )
- $process['body'] = WP_Http_Encoding::decompress( $process['body'] );
-
- return array('headers' => $arrHeaders['headers'], 'body' => $process['body'], 'response' => $arrHeaders['response'], 'cookies' => $arrHeaders['cookies']);
+ return wp_remote_request( $redirect_location, $args );
}
/**
- * Whether this class can be used for retrieving an URL.
+ * Determines if a specified string represents an IP address or not.
*
- * @since 2.7.0
+ * This function also detects the type of the IP address, returning either
+ * '4' or '6' to represent a IPv4 and IPv6 address respectively.
+ * This does not verify if the IP is a valid IP, only that it appears to be
+ * an IP address.
+ *
+ * @see http://home.deds.nl/~aeron/regex/ for IPv6 regex
+ *
+ * @since 3.7.0
* @static
- * @return boolean False means this class can not be used, true means it can.
+ *
+ * @param string $maybe_ip A suspected IP address
+ * @return integer|bool Upon success, '4' or '6' to represent a IPv4 or IPv6 address, false upon failure
*/
- function test( $args = array() ) {
- if ( false !== ($option = get_option( 'disable_fsockopen' )) && time()-$option < 43200 ) // 12 hours
- return false;
+ public static function is_ip_address( $maybe_ip ) {
+ if ( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $maybe_ip ) )
+ return 4;
- $is_ssl = isset($args['ssl']) && $args['ssl'];
+ if ( false !== strpos( $maybe_ip, ':' ) && preg_match( '/^(((?=.*(::))(?!.*\3.+\3))\3?|([\dA-F]{1,4}(\3|:\b|$)|\2))(?4){5}((?4){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i', trim( $maybe_ip, ' []' ) ) )
+ return 6;
- if ( ! $is_ssl && function_exists( 'fsockopen' ) )
- $use = true;
- elseif ( $is_ssl && extension_loaded('openssl') && function_exists( 'fsockopen' ) )
- $use = true;
- else
- $use = false;
-
- return apply_filters('use_fsockopen_transport', $use, $args);
+ 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.
+ * HTTP request method uses PHP Streams to retrieve the url.
*
- * @package WordPress
- * @subpackage HTTP
* @since 2.7.0
+ * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
*/
-class WP_Http_Fopen {
+class WP_Http_Streams {
/**
- * Send a HTTP request to a URI using fopen().
+ * Send a HTTP request to a URI using PHP Streams.
*
- * 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.
+ * @see WP_Http::request For default options descriptions.
*
- * @access public
* @since 2.7.0
+ * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
*
- * @param string $url URI resource.
- * @param str|array $args Optional. Override the defaults.
- * @return array 'headers', 'body', 'cookies' and 'response' keys.
+ * @access public
+ * @param string $url The request URL.
+ * @param string|array $args Optional. Override the defaults.
+ * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
*/
- function request($url, $args = array()) {
+ public function request($url, $args = array()) {
$defaults = array(
'method' => 'GET', 'timeout' => 5,
'redirection' => 5, 'httpversion' => '1.0',
@@ -845,441 +908,395 @@ class WP_Http_Fopen {
$r = wp_parse_args( $args, $defaults );
- $arrURL = parse_url($url);
+ if ( isset( $r['headers']['User-Agent'] ) ) {
+ $r['user-agent'] = $r['headers']['User-Agent'];
+ unset( $r['headers']['User-Agent'] );
+ } elseif ( isset( $r['headers']['user-agent'] ) ) {
+ $r['user-agent'] = $r['headers']['user-agent'];
+ unset( $r['headers']['user-agent'] );
+ }
- if ( false === $arrURL )
- return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url));
+ // Construct Cookie: header if any cookies are set.
+ WP_Http::buildCookieHeader( $r );
- if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] )
- $url = str_replace($arrURL['scheme'], 'http', $url);
+ $arrURL = parse_url($url);
- if ( is_null( $r['headers'] ) )
- $r['headers'] = array();
+ $connect_host = $arrURL['host'];
- if ( is_string($r['headers']) ) {
- $processedHeaders = WP_Http::processHeaders($r['headers']);
- $r['headers'] = $processedHeaders['headers'];
+ $secure_transport = ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' );
+ if ( ! isset( $arrURL['port'] ) ) {
+ if ( $arrURL['scheme'] == 'ssl' || $arrURL['scheme'] == 'https' ) {
+ $arrURL['port'] = 443;
+ $secure_transport = true;
+ } else {
+ $arrURL['port'] = 80;
+ }
}
- $initial_user_agent = ini_get('user_agent');
-
- if ( !empty($r['headers']) && is_array($r['headers']) ) {
- $user_agent_extra_headers = '';
- foreach ( $r['headers'] as $header => $value )
- $user_agent_extra_headers .= "\r\n$header: $value";
- @ini_set('user_agent', $r['user-agent'] . $user_agent_extra_headers);
- } else {
- @ini_set('user_agent', $r['user-agent']);
+ // Always pass a Path, defaulting to the root in cases such as http://example.com
+ if ( ! isset( $arrURL['path'] ) ) {
+ $arrURL['path'] = '/';
}
- if ( !WP_DEBUG )
- $handle = @fopen($url, 'r');
- else
- $handle = fopen($url, 'r');
-
- if (! $handle)
- return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));
-
- $timeout = (int) floor( $r['timeout'] );
- $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
- stream_set_timeout( $handle, $timeout, $utimeout );
-
- if ( ! $r['blocking'] ) {
- fclose($handle);
- @ini_set('user_agent', $initial_user_agent); //Clean up any extra headers added
- return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
+ if ( isset( $r['headers']['Host'] ) || isset( $r['headers']['host'] ) ) {
+ if ( isset( $r['headers']['Host'] ) )
+ $arrURL['host'] = $r['headers']['Host'];
+ else
+ $arrURL['host'] = $r['headers']['host'];
+ unset( $r['headers']['Host'], $r['headers']['host'] );
}
- $strResponse = '';
- while ( ! feof($handle) )
- $strResponse .= fread($handle, 4096);
+ /*
+ * Certain versions of PHP have issues with 'localhost' and IPv6, It attempts to connect
+ * to ::1, which fails when the server is not set up for it. For compatibility, always
+ * connect to the IPv4 address.
+ */
+ if ( 'localhost' == strtolower( $connect_host ) )
+ $connect_host = '127.0.0.1';
- if ( function_exists('stream_get_meta_data') ) {
- $meta = stream_get_meta_data($handle);
+ $connect_host = $secure_transport ? 'ssl://' . $connect_host : 'tcp://' . $connect_host;
- $theHeaders = $meta['wrapper_data'];
- if ( isset( $meta['wrapper_data']['headers'] ) )
- $theHeaders = $meta['wrapper_data']['headers'];
- } else {
- //$http_response_header is a PHP reserved variable which is set in the current-scope when using the HTTP Wrapper
- //see http://php.oregonstate.edu/manual/en/reserved.variables.httpresponseheader.php
- $theHeaders = $http_response_header;
+ $is_local = isset( $r['local'] ) && $r['local'];
+ $ssl_verify = isset( $r['sslverify'] ) && $r['sslverify'];
+ if ( $is_local ) {
+ /**
+ * Filter whether SSL should be verified for local requests.
+ *
+ * @since 2.8.0
+ *
+ * @param bool $ssl_verify Whether to verify the SSL connection. Default true.
+ */
+ $ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify );
+ } elseif ( ! $is_local ) {
+ /**
+ * Filter whether SSL should be verified for non-local requests.
+ *
+ * @since 2.8.0
+ *
+ * @param bool $ssl_verify Whether to verify the SSL connection. Default true.
+ */
+ $ssl_verify = apply_filters( 'https_ssl_verify', $ssl_verify );
}
- fclose($handle);
+ $proxy = new WP_HTTP_Proxy();
- @ini_set('user_agent', $initial_user_agent); //Clean up any extra headers added
+ $context = stream_context_create( array(
+ 'ssl' => array(
+ 'verify_peer' => $ssl_verify,
+ //'CN_match' => $arrURL['host'], // This is handled by self::verify_ssl_certificate()
+ 'capture_peer_cert' => $ssl_verify,
+ 'SNI_enabled' => true,
+ 'cafile' => $r['sslcertificates'],
+ 'allow_self_signed' => ! $ssl_verify,
+ )
+ ) );
- $processedHeaders = WP_Http::processHeaders($theHeaders);
+ $timeout = (int) floor( $r['timeout'] );
+ $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
+ $connect_timeout = max( $timeout, 1 );
- if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] )
- $strResponse = WP_Http::chunkTransferDecode($strResponse);
+ // Store error number.
+ $connection_error = null;
- if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) )
- $strResponse = WP_Http_Encoding::decompress( $strResponse );
+ // Store error string.
+ $connection_error_str = null;
- return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies']);
- }
+ if ( !WP_DEBUG ) {
+ // In the event that the SSL connection fails, silence the many PHP Warnings.
+ if ( $secure_transport )
+ $error_reporting = error_reporting(0);
- /**
- * Whether this class can be used for retrieving an URL.
- *
- * @since 2.7.0
- * @static
- * @return boolean False means this class can not be used, true means it can.
- */
- function test($args = array()) {
- if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) )
- return false;
+ if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
+ $handle = @stream_socket_client( 'tcp://' . $proxy->host() . ':' . $proxy->port(), $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
+ else
+ $handle = @stream_socket_client( $connect_host . ':' . $arrURL['port'], $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
- if ( isset($args['method']) && 'HEAD' == $args['method'] ) //This transport cannot make a HEAD request
- return false;
+ if ( $secure_transport )
+ error_reporting( $error_reporting );
- $use = true;
- //PHP does not verify SSL certs, We can only make a request via this transports if SSL Verification is turned off.
- $is_ssl = isset($args['ssl']) && $args['ssl'];
- if ( $is_ssl ) {
- $is_local = isset($args['local']) && $args['local'];
- $ssl_verify = isset($args['sslverify']) && $args['sslverify'];
- if ( $is_local && true != apply_filters('https_local_ssl_verify', true) )
- $use = true;
- elseif ( !$is_local && true != apply_filters('https_ssl_verify', true) )
- $use = true;
- elseif ( !$ssl_verify )
- $use = true;
+ } else {
+ if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
+ $handle = stream_socket_client( 'tcp://' . $proxy->host() . ':' . $proxy->port(), $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
else
- $use = false;
+ $handle = stream_socket_client( $connect_host . ':' . $arrURL['port'], $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
}
- return apply_filters('use_fopen_transport', $use, $args);
- }
-}
-
-/**
- * HTTP request method uses Streams to retrieve the url.
- *
- * Requires PHP 5.0+ and uses fopen with stream context. Requires that 'allow_url_fopen' PHP setting
- * to be enabled.
- *
- * Second preferred method for getting the URL, for PHP 5.
- *
- * @package WordPress
- * @subpackage HTTP
- * @since 2.7.0
- */
-class WP_Http_Streams {
- /**
- * Send a HTTP request to a URI using streams with fopen().
- *
- * @access public
- * @since 2.7.0
- *
- * @param string $url
- * @param str|array $args Optional. Override the defaults.
- * @return array 'headers', 'body', 'cookies' and 'response' keys.
- */
- function request($url, $args = array()) {
- $defaults = array(
- 'method' => 'GET', 'timeout' => 5,
- 'redirection' => 5, 'httpversion' => '1.0',
- 'blocking' => true,
- 'headers' => array(), 'body' => null, 'cookies' => array()
- );
-
- $r = wp_parse_args( $args, $defaults );
+ if ( false === $handle ) {
+ // SSL connection failed due to expired/invalid cert, or, OpenSSL configuration is broken.
+ if ( $secure_transport && 0 === $connection_error && '' === $connection_error_str )
+ return new WP_Error( 'http_request_failed', __( 'The SSL certificate for the host could not be verified.' ) );
- if ( isset($r['headers']['User-Agent']) ) {
- $r['user-agent'] = $r['headers']['User-Agent'];
- unset($r['headers']['User-Agent']);
- } else if ( isset($r['headers']['user-agent']) ) {
- $r['user-agent'] = $r['headers']['user-agent'];
- unset($r['headers']['user-agent']);
+ return new WP_Error('http_request_failed', $connection_error . ': ' . $connection_error_str );
}
- // Construct Cookie: header if any cookies are set
- WP_Http::buildCookieHeader( $r );
+ // Verify that the SSL certificate is valid for this request.
+ if ( $secure_transport && $ssl_verify && ! $proxy->is_enabled() ) {
+ if ( ! self::verify_ssl_certificate( $handle, $arrURL['host'] ) )
+ return new WP_Error( 'http_request_failed', __( 'The SSL certificate for the host could not be verified.' ) );
+ }
- $arrURL = parse_url($url);
+ stream_set_timeout( $handle, $timeout, $utimeout );
- if ( false === $arrURL )
- return new WP_Error('http_request_failed', sprintf(__('Malformed URL: %s'), $url));
-
- if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] )
- $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url);
-
- // Convert Header array to string.
- $strHeaders = '';
- if ( is_array( $r['headers'] ) )
- foreach ( $r['headers'] as $name => $value )
- $strHeaders .= "{$name}: $value\r\n";
- else if ( is_string( $r['headers'] ) )
- $strHeaders = $r['headers'];
-
- $is_local = isset($args['local']) && $args['local'];
- $ssl_verify = isset($args['sslverify']) && $args['sslverify'];
- if ( $is_local )
- $ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify);
- elseif ( ! $is_local )
- $ssl_verify = apply_filters('https_ssl_verify', $ssl_verify);
-
- $arrContext = array('http' =>
- array(
- 'method' => strtoupper($r['method']),
- 'user_agent' => $r['user-agent'],
- 'max_redirects' => $r['redirection'] + 1, // See #11557
- 'protocol_version' => (float) $r['httpversion'],
- 'header' => $strHeaders,
- 'ignore_errors' => true, // Return non-200 requests.
- 'timeout' => $r['timeout'],
- 'ssl' => array(
- 'verify_peer' => $ssl_verify,
- 'verify_host' => $ssl_verify
- )
- )
- );
+ if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) //Some proxies require full URL in this field.
+ $requestPath = $url;
+ else
+ $requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );
- $proxy = new WP_HTTP_Proxy();
+ $strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
- if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
- $arrContext['http']['proxy'] = 'tcp://' . $proxy->host() . ':' . $proxy->port();
- $arrContext['http']['request_fulluri'] = true;
+ $include_port_in_host_header = (
+ ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) ||
+ ( 'http' == $arrURL['scheme'] && 80 != $arrURL['port'] ) ||
+ ( 'https' == $arrURL['scheme'] && 443 != $arrURL['port'] )
+ );
- // We only support Basic authentication so this will only work if that is what your proxy supports.
- if ( $proxy->use_authentication() )
- $arrContext['http']['header'] .= $proxy->authentication_header() . "\r\n";
+ if ( $include_port_in_host_header ) {
+ $strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";
+ } else {
+ $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
}
- if ( 'HEAD' == $r['method'] ) // Disable redirects for HEAD requests
- $arrContext['http']['max_redirects'] = 1;
+ if ( isset($r['user-agent']) )
+ $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";
- if ( ! empty($r['body'] ) )
- $arrContext['http']['content'] = $r['body'];
+ if ( is_array($r['headers']) ) {
+ foreach ( (array) $r['headers'] as $header => $headerValue )
+ $strHeaders .= $header . ': ' . $headerValue . "\r\n";
+ } else {
+ $strHeaders .= $r['headers'];
+ }
- $context = stream_context_create($arrContext);
+ if ( $proxy->use_authentication() )
+ $strHeaders .= $proxy->authentication_header() . "\r\n";
- if ( !WP_DEBUG )
- $handle = @fopen($url, 'r', false, $context);
- else
- $handle = fopen($url, 'r', false, $context);
+ $strHeaders .= "\r\n";
- if ( ! $handle )
- return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));
+ if ( ! is_null($r['body']) )
+ $strHeaders .= $r['body'];
- $timeout = (int) floor( $r['timeout'] );
- $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
- stream_set_timeout( $handle, $timeout, $utimeout );
+ fwrite($handle, $strHeaders);
if ( ! $r['blocking'] ) {
- stream_set_blocking($handle, 0);
- fclose($handle);
+ stream_set_blocking( $handle, 0 );
+ fclose( $handle );
return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
}
- $strResponse = stream_get_contents($handle);
- $meta = stream_get_meta_data($handle);
-
- fclose($handle);
-
- $processedHeaders = array();
- if ( isset( $meta['wrapper_data']['headers'] ) )
- $processedHeaders = WP_Http::processHeaders($meta['wrapper_data']['headers']);
- else
- $processedHeaders = WP_Http::processHeaders($meta['wrapper_data']);
-
- if ( ! empty( $strResponse ) && isset( $processedHeaders['headers']['transfer-encoding'] ) && 'chunked' == $processedHeaders['headers']['transfer-encoding'] )
- $strResponse = WP_Http::chunkTransferDecode($strResponse);
-
- if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($processedHeaders['headers']) )
- $strResponse = WP_Http_Encoding::decompress( $strResponse );
-
- return array('headers' => $processedHeaders['headers'], 'body' => $strResponse, 'response' => $processedHeaders['response'], 'cookies' => $processedHeaders['cookies']);
- }
-
- /**
- * Whether this class can be used for retrieving an URL.
- *
- * @static
- * @access public
- * @since 2.7.0
- *
- * @return boolean False means this class can not be used, true means it can.
- */
- function test($args = array()) {
- if ( ! function_exists('fopen') || (function_exists('ini_get') && true != ini_get('allow_url_fopen')) )
- return false;
+ $strResponse = '';
+ $bodyStarted = false;
+ $keep_reading = true;
+ $block_size = 4096;
+ if ( isset( $r['limit_response_size'] ) )
+ $block_size = min( $block_size, $r['limit_response_size'] );
+
+ // If streaming to a file setup the file handle.
+ if ( $r['stream'] ) {
+ if ( ! WP_DEBUG )
+ $stream_handle = @fopen( $r['filename'], 'w+' );
+ else
+ $stream_handle = fopen( $r['filename'], 'w+' );
+ if ( ! $stream_handle )
+ return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) );
+
+ $bytes_written = 0;
+ while ( ! feof($handle) && $keep_reading ) {
+ $block = fread( $handle, $block_size );
+ if ( ! $bodyStarted ) {
+ $strResponse .= $block;
+ if ( strpos( $strResponse, "\r\n\r\n" ) ) {
+ $process = WP_Http::processResponse( $strResponse );
+ $bodyStarted = true;
+ $block = $process['body'];
+ unset( $strResponse );
+ $process['body'] = '';
+ }
+ }
- if ( version_compare(PHP_VERSION, '5.0', '<') )
- return false;
+ $this_block_size = strlen( $block );
- //HTTPS via Proxy was added in 5.1.0
- $is_ssl = isset($args['ssl']) && $args['ssl'];
- if ( $is_ssl && version_compare(PHP_VERSION, '5.1.0', '<') ) {
- $proxy = new WP_HTTP_Proxy();
- /**
- * No URL check, as its not currently passed to the ::test() function
- * In the case where a Proxy is in use, Just bypass this transport for HTTPS.
- */
- if ( $proxy->is_enabled() )
- return false;
- }
+ if ( isset( $r['limit_response_size'] ) && ( $bytes_written + $this_block_size ) > $r['limit_response_size'] ) {
+ $this_block_size = ( $r['limit_response_size'] - $bytes_written );
+ $block = substr( $block, 0, $this_block_size );
+ }
- return apply_filters('use_streams_transport', true, $args);
- }
-}
+ $bytes_written_to_file = fwrite( $stream_handle, $block );
-/**
- * HTTP request method uses HTTP extension to retrieve the url.
- *
- * Requires the HTTP extension to be installed. This would be the preferred transport since it can
- * handle a lot of the problems that forces the others to use the HTTP version 1.0. Even if PHP 5.2+
- * is being used, it doesn't mean that the HTTP extension will be enabled.
- *
- * @package WordPress
- * @subpackage HTTP
- * @since 2.7.0
- */
-class WP_Http_ExtHttp {
- /**
- * Send a HTTP request to a URI using HTTP extension.
- *
- * Does not support non-blocking.
- *
- * @access public
- * @since 2.7
- *
- * @param string $url
- * @param str|array $args Optional. Override the defaults.
- * @return array 'headers', 'body', 'cookies' and 'response' keys.
- */
- function request($url, $args = array()) {
- $defaults = array(
- 'method' => 'GET', 'timeout' => 5,
- 'redirection' => 5, 'httpversion' => '1.0',
- 'blocking' => true,
- 'headers' => array(), 'body' => null, 'cookies' => array()
- );
+ if ( $bytes_written_to_file != $this_block_size ) {
+ fclose( $handle );
+ fclose( $stream_handle );
+ return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) );
+ }
- $r = wp_parse_args( $args, $defaults );
+ $bytes_written += $bytes_written_to_file;
- if ( isset($r['headers']['User-Agent']) ) {
- $r['user-agent'] = $r['headers']['User-Agent'];
- unset($r['headers']['User-Agent']);
- } else if ( isset($r['headers']['user-agent']) ) {
- $r['user-agent'] = $r['headers']['user-agent'];
- unset($r['headers']['user-agent']);
- }
+ $keep_reading = !isset( $r['limit_response_size'] ) || $bytes_written < $r['limit_response_size'];
+ }
- // Construct Cookie: header if any cookies are set
- WP_Http::buildCookieHeader( $r );
+ fclose( $stream_handle );
- switch ( $r['method'] ) {
- case 'POST':
- $r['method'] = HTTP_METH_POST;
- break;
- case 'HEAD':
- $r['method'] = HTTP_METH_HEAD;
- break;
- case 'PUT':
- $r['method'] = HTTP_METH_PUT;
- break;
- case 'GET':
- default:
- $r['method'] = HTTP_METH_GET;
- }
+ } else {
+ $header_length = 0;
+ while ( ! feof( $handle ) && $keep_reading ) {
+ $block = fread( $handle, $block_size );
+ $strResponse .= $block;
+ if ( ! $bodyStarted && strpos( $strResponse, "\r\n\r\n" ) ) {
+ $header_length = strpos( $strResponse, "\r\n\r\n" ) + 4;
+ $bodyStarted = true;
+ }
+ $keep_reading = ( ! $bodyStarted || !isset( $r['limit_response_size'] ) || strlen( $strResponse ) < ( $header_length + $r['limit_response_size'] ) );
+ }
- $arrURL = parse_url($url);
+ $process = WP_Http::processResponse( $strResponse );
+ unset( $strResponse );
- if ( 'http' != $arrURL['scheme'] && 'https' != $arrURL['scheme'] )
- $url = preg_replace('|^' . preg_quote($arrURL['scheme'], '|') . '|', 'http', $url);
+ }
- $is_local = isset($args['local']) && $args['local'];
- $ssl_verify = isset($args['sslverify']) && $args['sslverify'];
- if ( $is_local )
- $ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify);
- elseif ( ! $is_local )
- $ssl_verify = apply_filters('https_ssl_verify', $ssl_verify);
+ fclose( $handle );
- $r['timeout'] = (int) ceil( $r['timeout'] );
+ $arrHeaders = WP_Http::processHeaders( $process['headers'], $url );
- $options = array(
- 'timeout' => $r['timeout'],
- 'connecttimeout' => $r['timeout'],
- 'redirect' => $r['redirection'],
- 'useragent' => $r['user-agent'],
- 'headers' => $r['headers'],
- 'ssl' => array(
- 'verifypeer' => $ssl_verify,
- 'verifyhost' => $ssl_verify
- )
+ $response = array(
+ 'headers' => $arrHeaders['headers'],
+ // Not yet processed.
+ 'body' => null,
+ 'response' => $arrHeaders['response'],
+ 'cookies' => $arrHeaders['cookies'],
+ 'filename' => $r['filename']
);
- if ( HTTP_METH_HEAD == $r['method'] )
- $options['redirect'] = 0; // Assumption: Docs seem to suggest that this means do not follow. Untested.
+ // Handle redirects.
+ if ( false !== ( $redirect_response = WP_HTTP::handle_redirects( $url, $r, $response ) ) )
+ return $redirect_response;
- // The HTTP extensions offers really easy proxy support.
- $proxy = new WP_HTTP_Proxy();
+ // If the body was chunk encoded, then decode it.
+ if ( ! empty( $process['body'] ) && isset( $arrHeaders['headers']['transfer-encoding'] ) && 'chunked' == $arrHeaders['headers']['transfer-encoding'] )
+ $process['body'] = WP_Http::chunkTransferDecode($process['body']);
- if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
- $options['proxyhost'] = $proxy->host();
- $options['proxyport'] = $proxy->port();
- $options['proxytype'] = HTTP_PROXY_HTTP;
+ if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($arrHeaders['headers']) )
+ $process['body'] = WP_Http_Encoding::decompress( $process['body'] );
- if ( $proxy->use_authentication() ) {
- $options['proxyauth'] = $proxy->authentication();
- $options['proxyauthtype'] = HTTP_AUTH_ANY;
- }
- }
+ if ( isset( $r['limit_response_size'] ) && strlen( $process['body'] ) > $r['limit_response_size'] )
+ $process['body'] = substr( $process['body'], 0, $r['limit_response_size'] );
- if ( !WP_DEBUG ) //Emits warning level notices for max redirects and timeouts
- $strResponse = @http_request($r['method'], $url, $r['body'], $options, $info);
- else
- $strResponse = http_request($r['method'], $url, $r['body'], $options, $info); //Emits warning level notices for max redirects and timeouts
+ $response['body'] = $process['body'];
- // Error may still be set, Response may return headers or partial document, and error
- // contains a reason the request was aborted, eg, timeout expired or max-redirects reached.
- if ( false === $strResponse || ! empty($info['error']) )
- return new WP_Error('http_request_failed', $info['response_code'] . ': ' . $info['error']);
+ return $response;
+ }
- if ( ! $r['blocking'] )
- return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
+ /**
+ * Verifies the received SSL certificate against it's Common Names and subjectAltName fields
+ *
+ * PHP's SSL verifications only verify that it's a valid Certificate, it doesn't verify if
+ * the certificate is valid for the hostname which was requested.
+ * This function verifies the requested hostname against certificate's subjectAltName field,
+ * if that is empty, or contains no DNS entries, a fallback to the Common Name field is used.
+ *
+ * IP Address support is included if the request is being made to an IP address.
+ *
+ * @since 3.7.0
+ * @static
+ *
+ * @param stream $stream The PHP Stream which the SSL request is being made over
+ * @param string $host The hostname being requested
+ * @return bool If the cerficiate presented in $stream is valid for $host
+ */
+ public static function verify_ssl_certificate( $stream, $host ) {
+ $context_options = stream_context_get_options( $stream );
- $headers_body = WP_HTTP::processResponse($strResponse);
- $theHeaders = $headers_body['headers'];
- $theBody = $headers_body['body'];
- unset($headers_body);
+ if ( empty( $context_options['ssl']['peer_certificate'] ) )
+ return false;
- $theHeaders = WP_Http::processHeaders($theHeaders);
+ $cert = openssl_x509_parse( $context_options['ssl']['peer_certificate'] );
+ if ( ! $cert )
+ return false;
- if ( ! empty( $theBody ) && isset( $theHeaders['headers']['transfer-encoding'] ) && 'chunked' == $theHeaders['headers']['transfer-encoding'] ) {
- if ( !WP_DEBUG )
- $theBody = @http_chunked_decode($theBody);
- else
- $theBody = http_chunked_decode($theBody);
+ /*
+ * If the request is being made to an IP address, we'll validate against IP fields
+ * in the cert (if they exist)
+ */
+ $host_type = ( WP_HTTP::is_ip_address( $host ) ? 'ip' : 'dns' );
+
+ $certificate_hostnames = array();
+ if ( ! empty( $cert['extensions']['subjectAltName'] ) ) {
+ $match_against = preg_split( '/,\s*/', $cert['extensions']['subjectAltName'] );
+ foreach ( $match_against as $match ) {
+ list( $match_type, $match_host ) = explode( ':', $match );
+ if ( $host_type == strtolower( trim( $match_type ) ) ) // IP: or DNS:
+ $certificate_hostnames[] = strtolower( trim( $match_host ) );
+ }
+ } elseif ( !empty( $cert['subject']['CN'] ) ) {
+ // Only use the CN when the certificate includes no subjectAltName extension.
+ $certificate_hostnames[] = strtolower( $cert['subject']['CN'] );
}
- if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) )
- $theBody = http_inflate( $theBody );
+ // Exact hostname/IP matches.
+ if ( in_array( strtolower( $host ), $certificate_hostnames ) )
+ return true;
+
+ // IP's can't be wildcards, Stop processing.
+ if ( 'ip' == $host_type )
+ return false;
- $theResponse = array();
- $theResponse['code'] = $info['response_code'];
- $theResponse['message'] = get_status_header_desc($info['response_code']);
+ // Test to see if the domain is at least 2 deep for wildcard support.
+ if ( substr_count( $host, '.' ) < 2 )
+ return false;
+
+ // Wildcard subdomains certs (*.example.com) are valid for a.example.com but not a.b.example.com.
+ $wildcard_host = preg_replace( '/^[^.]+\./', '*.', $host );
- return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $theResponse, 'cookies' => $theHeaders['cookies']);
+ return in_array( strtolower( $wildcard_host ), $certificate_hostnames );
}
/**
- * Whether this class can be used for retrieving an URL.
+ * Whether this class can be used for retrieving a URL.
*
* @static
+ * @access public
* @since 2.7.0
+ * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
*
- * @return boolean False means this class can not be used, true means it can.
+ * @return bool False means this class can not be used, true means it can.
*/
- function test($args = array()) {
- return apply_filters('use_http_extension_transport', function_exists('http_request'), $args );
+ public static function test( $args = array() ) {
+ if ( ! function_exists( 'stream_socket_client' ) )
+ return false;
+
+ $is_ssl = isset( $args['ssl'] ) && $args['ssl'];
+
+ if ( $is_ssl ) {
+ if ( ! extension_loaded( 'openssl' ) )
+ return false;
+ if ( ! function_exists( 'openssl_x509_parse' ) )
+ return false;
+ }
+
+ /**
+ * Filter whether streams can be used as a transport for retrieving a URL.
+ *
+ * @since 2.7.0
+ *
+ * @param bool $use_class Whether the class can be used. Default true.
+ * @param array $args Request arguments.
+ */
+ return apply_filters( 'use_streams_transport', true, $args );
}
}
+/**
+ * Deprecated HTTP Transport method which used fsockopen.
+ *
+ * This class is not used, and is included for backwards compatibility only.
+ * All code should make use of WP_HTTP directly through it's API.
+ *
+ * @see WP_HTTP::request
+ *
+ * @since 2.7.0
+ * @deprecated 3.7.0 Please use WP_HTTP::request() directly
+ */
+class WP_HTTP_Fsockopen extends WP_HTTP_Streams {
+ // For backwards compatibility for users who are using the class directly.
+}
+
/**
* HTTP request method uses Curl extension to retrieve the url.
*
@@ -1287,21 +1304,66 @@ class WP_Http_ExtHttp {
*
* @package WordPress
* @subpackage HTTP
- * @since 2.7
+ * @since 2.7.0
*/
class WP_Http_Curl {
+ /**
+ * Temporary header storage for during requests.
+ *
+ * @since 3.2.0
+ * @access private
+ * @var string
+ */
+ private $headers = '';
+
+ /**
+ * Temporary body storage for during requests.
+ *
+ * @since 3.6.0
+ * @access private
+ * @var string
+ */
+ private $body = '';
+
+ /**
+ * The maximum amount of data to receive from the remote server.
+ *
+ * @since 3.6.0
+ * @access private
+ * @var int
+ */
+ private $max_body_length = false;
+
+ /**
+ * The file resource used for streaming to file.
+ *
+ * @since 3.6.0
+ * @access private
+ * @var resource
+ */
+ private $stream_handle = false;
+
+ /**
+ * The total bytes written in the current request.
+ *
+ * @since 4.1.0
+ * @access private
+ * @var int
+ */
+ private $bytes_written_total = 0;
+
/**
* Send a HTTP request to a URI using cURL extension.
*
* @access public
* @since 2.7.0
*
- * @param string $url
- * @param str|array $args Optional. Override the defaults.
- * @return array 'headers', 'body', 'cookies' and 'response' keys.
+ * @param string $url The request URL.
+ * @param string|array $args Optional. Override the defaults.
+ * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
*/
- function request($url, $args = array()) {
+ public function request($url, $args = array()) {
$defaults = array(
'method' => 'GET', 'timeout' => 5,
'redirection' => 5, 'httpversion' => '1.0',
@@ -1311,12 +1373,12 @@ class WP_Http_Curl {
$r = wp_parse_args( $args, $defaults );
- if ( isset($r['headers']['User-Agent']) ) {
+ if ( isset( $r['headers']['User-Agent'] ) ) {
$r['user-agent'] = $r['headers']['User-Agent'];
- unset($r['headers']['User-Agent']);
- } else if ( isset($r['headers']['user-agent']) ) {
+ unset( $r['headers']['User-Agent'] );
+ } elseif ( isset( $r['headers']['user-agent'] ) ) {
$r['user-agent'] = $r['headers']['user-agent'];
- unset($r['headers']['user-agent']);
+ unset( $r['headers']['user-agent'] );
}
// Construct Cookie: header if any cookies are set.
@@ -1329,44 +1391,48 @@ class WP_Http_Curl {
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
- $isPHP5 = version_compare(PHP_VERSION, '5.0.0', '>=');
-
- if ( $isPHP5 ) {
- curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP );
- curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() );
- curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() );
- } else {
- curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() .':'. $proxy->port() );
- }
+ curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP );
+ curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() );
+ curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() );
if ( $proxy->use_authentication() ) {
- if ( $isPHP5 )
- curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY );
-
+ curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY );
curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() );
}
}
- $is_local = isset($args['local']) && $args['local'];
- $ssl_verify = isset($args['sslverify']) && $args['sslverify'];
- if ( $is_local )
- $ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify);
- elseif ( ! $is_local )
- $ssl_verify = apply_filters('https_ssl_verify', $ssl_verify);
-
+ $is_local = isset($r['local']) && $r['local'];
+ $ssl_verify = isset($r['sslverify']) && $r['sslverify'];
+ if ( $is_local ) {
+ /** This filter is documented in wp-includes/class-http.php */
+ $ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify );
+ } elseif ( ! $is_local ) {
+ /** This filter is documented in wp-includes/class-http.php */
+ $ssl_verify = apply_filters( 'https_ssl_verify', $ssl_verify );
+ }
- // CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since
- // a value of 0 will allow an ulimited timeout.
+ /*
+ * CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since.
+ * a value of 0 will allow an unlimited timeout.
+ */
$timeout = (int) ceil( $r['timeout'] );
curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, $timeout );
curl_setopt( $handle, CURLOPT_TIMEOUT, $timeout );
curl_setopt( $handle, CURLOPT_URL, $url);
curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true );
- curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, $ssl_verify );
+ curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, ( $ssl_verify === true ) ? 2 : false );
curl_setopt( $handle, CURLOPT_SSL_VERIFYPEER, $ssl_verify );
+ curl_setopt( $handle, CURLOPT_CAINFO, $r['sslcertificates'] );
curl_setopt( $handle, CURLOPT_USERAGENT, $r['user-agent'] );
- curl_setopt( $handle, CURLOPT_MAXREDIRS, $r['redirection'] );
+
+ /*
+ * The option doesn't work with safe mode or when open_basedir is set, and there's
+ * a bug #17490 with redirected POST requests, so handle redirections outside Curl.
+ */
+ curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, false );
+ if ( defined( 'CURLOPT_PROTOCOLS' ) ) // PHP 5.2.10 / cURL 7.19.4
+ curl_setopt( $handle, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS );
switch ( $r['method'] ) {
case 'HEAD':
@@ -1380,20 +1446,39 @@ class WP_Http_Curl {
curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, 'PUT' );
curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );
break;
+ default:
+ curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, $r['method'] );
+ if ( ! is_null( $r['body'] ) )
+ curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );
+ break;
+ }
+
+ if ( true === $r['blocking'] ) {
+ curl_setopt( $handle, CURLOPT_HEADERFUNCTION, array( $this, 'stream_headers' ) );
+ curl_setopt( $handle, CURLOPT_WRITEFUNCTION, array( $this, 'stream_body' ) );
}
- if ( true === $r['blocking'] )
- curl_setopt( $handle, CURLOPT_HEADER, true );
+ curl_setopt( $handle, CURLOPT_HEADER, false );
+
+ if ( isset( $r['limit_response_size'] ) )
+ $this->max_body_length = intval( $r['limit_response_size'] );
else
- curl_setopt( $handle, CURLOPT_HEADER, false );
+ $this->max_body_length = false;
- // The option doesn't work with safe mode or when open_basedir is set.
- // Disable HEAD when making HEAD requests.
- if ( !ini_get('safe_mode') && !ini_get('open_basedir') && 'HEAD' != $r['method'] )
- curl_setopt( $handle, CURLOPT_FOLLOWLOCATION, true );
+ // If streaming to a file open a file handle, and setup our curl streaming handler.
+ if ( $r['stream'] ) {
+ if ( ! WP_DEBUG )
+ $this->stream_handle = @fopen( $r['filename'], 'w+' );
+ else
+ $this->stream_handle = fopen( $r['filename'], 'w+' );
+ if ( ! $this->stream_handle )
+ return new WP_Error( 'http_request_failed', sprintf( __( 'Could not open handle for fopen() to %s' ), $r['filename'] ) );
+ } else {
+ $this->stream_handle = false;
+ }
if ( !empty( $r['headers'] ) ) {
- // cURL expects full header strings in each element
+ // cURL expects full header strings in each element.
$headers = array();
foreach ( $r['headers'] as $name => $value ) {
$headers[] = "{$name}: $value";
@@ -1406,60 +1491,141 @@ class WP_Http_Curl {
else
curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );
- // Cookies are not handled by the HTTP API currently. Allow for plugin authors to handle it
- // themselves... Although, it is somewhat pointless without some reference.
- do_action_ref_array( 'http_api_curl', array(&$handle) );
+ /**
+ * Fires before the cURL request is executed.
+ *
+ * Cookies are not currently handled by the HTTP API. This action allows
+ * plugins to handle cookies themselves.
+ *
+ * @since 2.8.0
+ *
+ * @param resource &$handle The cURL handle returned by curl_init().
+ * @param array $r The HTTP request arguments.
+ * @param string $url The request URL.
+ */
+ do_action_ref_array( 'http_api_curl', array( &$handle, $r, $url ) );
// We don't need to return the body, so don't. Just execute request and return.
if ( ! $r['blocking'] ) {
curl_exec( $handle );
+
+ if ( $curl_error = curl_error( $handle ) ) {
+ curl_close( $handle );
+ return new WP_Error( 'http_request_failed', $curl_error );
+ }
+ if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array( 301, 302 ) ) ) {
+ curl_close( $handle );
+ return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) );
+ }
+
curl_close( $handle );
return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
}
- $theResponse = curl_exec( $handle );
-
- if ( !empty($theResponse) ) {
- $headerLength = curl_getinfo($handle, CURLINFO_HEADER_SIZE);
- $theHeaders = trim( substr($theResponse, 0, $headerLength) );
- if ( strlen($theResponse) > $headerLength )
- $theBody = substr( $theResponse, $headerLength );
- else
- $theBody = '';
- if ( false !== strpos($theHeaders, "\r\n\r\n") ) {
- $headerParts = explode("\r\n\r\n", $theHeaders);
- $theHeaders = $headerParts[ count($headerParts) -1 ];
+ curl_exec( $handle );
+ $theHeaders = WP_Http::processHeaders( $this->headers, $url );
+ $theBody = $this->body;
+ $bytes_written_total = $this->bytes_written_total;
+
+ $this->headers = '';
+ $this->body = '';
+ $this->bytes_written_total = 0;
+
+ $curl_error = curl_errno( $handle );
+
+ // If an error occurred, or, no response.
+ if ( $curl_error || ( 0 == strlen( $theBody ) && empty( $theHeaders['headers'] ) ) ) {
+ if ( CURLE_WRITE_ERROR /* 23 */ == $curl_error ) {
+ if ( ! $this->max_body_length || $this->max_body_length != $bytes_written_total ) {
+ if ( $r['stream'] ) {
+ curl_close( $handle );
+ fclose( $this->stream_handle );
+ return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) );
+ } else {
+ curl_close( $handle );
+ return new WP_Error( 'http_request_failed', curl_error( $handle ) );
+ }
+ }
+ } else {
+ if ( $curl_error = curl_error( $handle ) ) {
+ curl_close( $handle );
+ return new WP_Error( 'http_request_failed', $curl_error );
+ }
+ }
+ if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array( 301, 302 ) ) ) {
+ curl_close( $handle );
+ return new WP_Error( 'http_request_failed', __( 'Too many redirects.' ) );
}
- $theHeaders = WP_Http::processHeaders($theHeaders);
- } else {
- if ( $curl_error = curl_error($handle) )
- return new WP_Error('http_request_failed', $curl_error);
- if ( in_array( curl_getinfo( $handle, CURLINFO_HTTP_CODE ), array(301, 302) ) )
- return new WP_Error('http_request_failed', __('Too many redirects.'));
-
- $theHeaders = array( 'headers' => array(), 'cookies' => array() );
- $theBody = '';
}
- $response = array();
- $response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE );
- $response['message'] = get_status_header_desc($response['code']);
-
curl_close( $handle );
- // See #11305 - When running under safe mode, redirection is disabled above. Handle it manually.
- if ( !empty($theHeaders['headers']['location']) && (ini_get('safe_mode') || ini_get('open_basedir')) ) {
- if ( $r['redirection']-- > 0 ) {
- return $this->request($theHeaders['headers']['location'], $r);
- } else {
- return new WP_Error('http_request_failed', __('Too many redirects.'));
- }
- }
+ if ( $r['stream'] )
+ fclose( $this->stream_handle );
+
+ $response = array(
+ 'headers' => $theHeaders['headers'],
+ 'body' => null,
+ 'response' => $theHeaders['response'],
+ 'cookies' => $theHeaders['cookies'],
+ 'filename' => $r['filename']
+ );
+
+ // Handle redirects.
+ if ( false !== ( $redirect_response = WP_HTTP::handle_redirects( $url, $r, $response ) ) )
+ return $redirect_response;
if ( true === $r['decompress'] && true === WP_Http_Encoding::should_decode($theHeaders['headers']) )
$theBody = WP_Http_Encoding::decompress( $theBody );
- return array('headers' => $theHeaders['headers'], 'body' => $theBody, 'response' => $response, 'cookies' => $theHeaders['cookies']);
+ $response['body'] = $theBody;
+
+ return $response;
+ }
+
+ /**
+ * Grab the headers of the cURL request
+ *
+ * Each header is sent individually to this callback, so we append to the $header property for temporary storage
+ *
+ * @since 3.2.0
+ * @access private
+ * @return int
+ */
+ private function stream_headers( $handle, $headers ) {
+ $this->headers .= $headers;
+ return strlen( $headers );
+ }
+
+ /**
+ * Grab the body of the cURL request
+ *
+ * The contents of the document are passed in chunks, so we append to the $body property for temporary storage.
+ * Returning a length shorter than the length of $data passed in will cause cURL to abort the request with CURLE_WRITE_ERROR
+ *
+ * @since 3.6.0
+ * @access private
+ * @return int
+ */
+ private function stream_body( $handle, $data ) {
+ $data_length = strlen( $data );
+
+ if ( $this->max_body_length && ( $this->bytes_written_total + $data_length ) > $this->max_body_length ) {
+ $data_length = ( $this->max_body_length - $this->bytes_written_total );
+ $data = substr( $data, 0, $data_length );
+ }
+
+ if ( $this->stream_handle ) {
+ $bytes_written = fwrite( $this->stream_handle, $data );
+ } else {
+ $this->body .= $data;
+ $bytes_written = $data_length;
+ }
+
+ $this->bytes_written_total += $bytes_written;
+
+ // Upon event of this function returning less than strlen( $data ) curl will error with CURLE_WRITE_ERROR.
+ return $bytes_written;
}
/**
@@ -1468,13 +1634,30 @@ class WP_Http_Curl {
* @static
* @since 2.7.0
*
- * @return boolean False means this class can not be used, true means it can.
+ * @return bool False means this class can not be used, true means it can.
*/
- function test($args = array()) {
- if ( function_exists('curl_init') && function_exists('curl_exec') )
- return apply_filters('use_curl_transport', true, $args);
+ public static function test( $args = array() ) {
+ if ( ! function_exists( 'curl_init' ) || ! function_exists( 'curl_exec' ) )
+ return false;
- return false;
+ $is_ssl = isset( $args['ssl'] ) && $args['ssl'];
+
+ if ( $is_ssl ) {
+ $curl_version = curl_version();
+ // Check whether this cURL version support SSL requests.
+ if ( ! (CURL_VERSION_SSL & $curl_version['features']) )
+ return false;
+ }
+
+ /**
+ * Filter whether cURL can be used as a transport for retrieving a URL.
+ *
+ * @since 2.7.0
+ *
+ * @param bool $use_class Whether the class can be used. Default true.
+ * @param array $args An array of request arguments.
+ */
+ return apply_filters( 'use_curl_transport', true, $args );
}
}
@@ -1486,7 +1669,7 @@ class WP_Http_Curl {
* constants.
*
* Please note that only BASIC authentication is supported by most transports.
- * cURL and the PHP HTTP Extension MAY support more methods (such as NTLM authentication) depending on your environment.
+ * cURL MAY support more methods (such as NTLM authentication) depending on your environment.
*
* The constants are as follows:
*
@@ -1500,52 +1683,53 @@ class WP_Http_Curl {
*
*
* An example can be as seen below.
- *
- * define('WP_PROXY_HOST', '192.168.84.101');
- * define('WP_PROXY_PORT', '8080');
- * define('WP_PROXY_BYPASS_HOSTS', 'localhost, www.example.com, *.wordpress.org');
- *
*
- * @link http://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress.
- * @link http://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_PROXY_BYPASS_HOSTS
- * @since 2.8
+ * define('WP_PROXY_HOST', '192.168.84.101');
+ * define('WP_PROXY_PORT', '8080');
+ * define('WP_PROXY_BYPASS_HOSTS', 'localhost, www.example.com, *.wordpress.org');
+ *
+ * @link https://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress.
+ * @link https://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_PROXY_BYPASS_HOSTS
+ * @since 2.8.0
*/
class WP_HTTP_Proxy {
/**
* Whether proxy connection should be used.
*
- * @since 2.8
+ * @since 2.8.0
+ *
* @use WP_PROXY_HOST
* @use WP_PROXY_PORT
*
* @return bool
*/
- function is_enabled() {
+ public function is_enabled() {
return defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT');
}
/**
* Whether authentication should be used.
*
- * @since 2.8
+ * @since 2.8.0
+ *
* @use WP_PROXY_USERNAME
* @use WP_PROXY_PASSWORD
*
* @return bool
*/
- function use_authentication() {
+ public function use_authentication() {
return defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD');
}
/**
* Retrieve the host for the proxy server.
*
- * @since 2.8
+ * @since 2.8.0
*
* @return string
*/
- function host() {
+ public function host() {
if ( defined('WP_PROXY_HOST') )
return WP_PROXY_HOST;
@@ -1555,11 +1739,11 @@ class WP_HTTP_Proxy {
/**
* Retrieve the port for the proxy server.
*
- * @since 2.8
+ * @since 2.8.0
*
* @return string
*/
- function port() {
+ public function port() {
if ( defined('WP_PROXY_PORT') )
return WP_PROXY_PORT;
@@ -1569,11 +1753,11 @@ class WP_HTTP_Proxy {
/**
* Retrieve the username for proxy authentication.
*
- * @since 2.8
+ * @since 2.8.0
*
* @return string
*/
- function username() {
+ public function username() {
if ( defined('WP_PROXY_USERNAME') )
return WP_PROXY_USERNAME;
@@ -1583,11 +1767,11 @@ class WP_HTTP_Proxy {
/**
* Retrieve the password for proxy authentication.
*
- * @since 2.8
+ * @since 2.8.0
*
* @return string
*/
- function password() {
+ public function password() {
if ( defined('WP_PROXY_PASSWORD') )
return WP_PROXY_PASSWORD;
@@ -1597,22 +1781,22 @@ class WP_HTTP_Proxy {
/**
* Retrieve authentication string for proxy authentication.
*
- * @since 2.8
+ * @since 2.8.0
*
* @return string
*/
- function authentication() {
+ public function authentication() {
return $this->username() . ':' . $this->password();
}
/**
* Retrieve header string for proxy authentication.
*
- * @since 2.8
+ * @since 2.8.0
*
* @return string
*/
- function authentication_header() {
+ public function authentication_header() {
return 'Proxy-Authorization: Basic ' . base64_encode( $this->authentication() );
}
@@ -1623,15 +1807,19 @@ class WP_HTTP_Proxy {
* some proxies can not handle this. We also have the constant available for defining other
* hosts that won't be sent through the proxy.
*
- * @uses WP_PROXY_BYPASS_HOSTS
* @since 2.8.0
*
+ * @staticvar array|null $bypass_hosts
+ * @staticvar array $wildcard_regex
+ *
* @param string $uri URI to check.
* @return bool True, to send through the proxy and false if, the proxy should not be used.
*/
- function send_through_proxy( $uri ) {
- // parse_url() only handles http, https type URLs, and will emit E_WARNING on failure.
- // This will be displayed on blogs, which is not reasonable.
+ public function send_through_proxy( $uri ) {
+ /*
+ * parse_url() only handles http, https type URLs, and will emit E_WARNING on failure.
+ * This will be displayed on blogs, which is not reasonable.
+ */
$check = @parse_url($uri);
// Malformed URL, can not process, but this could mean ssl, so let through anyway.
@@ -1640,21 +1828,38 @@ class WP_HTTP_Proxy {
$home = parse_url( get_option('siteurl') );
- if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] )
+ /**
+ * Filter whether to preempt sending the request through the proxy server.
+ *
+ * Returning false will bypass the proxy; returning true will send
+ * the request through the proxy. Returning null bypasses the filter.
+ *
+ * @since 3.5.0
+ *
+ * @param null $override Whether to override the request result. Default null.
+ * @param string $uri URL to check.
+ * @param array $check Associative array result of parsing the URI.
+ * @param array $home Associative array result of parsing the site URL.
+ */
+ $result = apply_filters( 'pre_http_send_through_proxy', null, $uri, $check, $home );
+ if ( ! is_null( $result ) )
+ return $result;
+
+ if ( 'localhost' == $check['host'] || ( isset( $home['host'] ) && $home['host'] == $check['host'] ) )
return false;
if ( !defined('WP_PROXY_BYPASS_HOSTS') )
return true;
- static $bypass_hosts;
- static $wildcard_regex = false;
- if ( null == $bypass_hosts ) {
+ static $bypass_hosts = null;
+ static $wildcard_regex = array();
+ if ( null === $bypass_hosts ) {
$bypass_hosts = preg_split('|,\s*|', WP_PROXY_BYPASS_HOSTS);
if ( false !== strpos(WP_PROXY_BYPASS_HOSTS, '*') ) {
$wildcard_regex = array();
foreach ( $bypass_hosts as $host )
- $wildcard_regex[] = str_replace('\*', '[\w.]+?', preg_quote($host, '/'));
+ $wildcard_regex[] = str_replace( '\*', '.+', preg_quote( $host, '/' ) );
$wildcard_regex = '/^(' . implode('|', $wildcard_regex) . ')$/i';
}
}
@@ -1686,7 +1891,7 @@ class WP_Http_Cookie {
* @since 2.8.0
* @var string
*/
- var $name;
+ public $name;
/**
* Cookie value.
@@ -1694,7 +1899,7 @@ class WP_Http_Cookie {
* @since 2.8.0
* @var string
*/
- var $value;
+ public $value;
/**
* When the cookie expires.
@@ -1702,7 +1907,7 @@ class WP_Http_Cookie {
* @since 2.8.0
* @var string
*/
- var $expires;
+ public $expires;
/**
* Cookie URL path.
@@ -1710,7 +1915,7 @@ class WP_Http_Cookie {
* @since 2.8.0
* @var string
*/
- var $path;
+ public $path;
/**
* Cookie Domain.
@@ -1718,18 +1923,7 @@ class WP_Http_Cookie {
* @since 2.8.0
* @var string
*/
- var $domain;
-
- /**
- * PHP4 style Constructor - Calls PHP5 Style Constructor.
- *
- * @access public
- * @since 2.8.0
- * @param string|array $data Raw cookie data.
- */
- function WP_Http_Cookie( $data ) {
- $this->__construct( $data );
- }
+ public $domain;
/**
* Sets up this cookie object.
@@ -1737,36 +1931,50 @@ class WP_Http_Cookie {
* The parameter $data should be either an associative array containing the indices names below
* or a header string detailing it.
*
- * If it's an array, it should include the following elements:
- *
- * - Name
- * - Value - should NOT be urlencoded already.
- * - Expires - (optional) String or int (UNIX timestamp).
- * - Path (optional)
- * - Domain (optional)
- *
- *
- * @access public
* @since 2.8.0
+ * @access public
*
- * @param string|array $data Raw cookie data.
+ * @param string|array $data {
+ * Raw cookie data as header string or data array.
+ *
+ * @type string $name Cookie name.
+ * @type mixed $value Value. Should NOT already be urlencoded.
+ * @type string|int $expires Optional. Unix timestamp or formatted date. Default null.
+ * @type string $path Optional. Path. Default '/'.
+ * @type string $domain Optional. Domain. Default host of parsed $requested_url.
+ * @type int $port Optional. Port. Default null.
+ * }
+ * @param string $requested_url The URL which the cookie was set on, used for default $domain
+ * and $port values.
*/
- function __construct( $data ) {
+ public function __construct( $data, $requested_url = '' ) {
+ if ( $requested_url )
+ $arrURL = @parse_url( $requested_url );
+ if ( isset( $arrURL['host'] ) )
+ $this->domain = $arrURL['host'];
+ $this->path = isset( $arrURL['path'] ) ? $arrURL['path'] : '/';
+ if ( '/' != substr( $this->path, -1 ) )
+ $this->path = dirname( $this->path ) . '/';
+
if ( is_string( $data ) ) {
- // Assume it's a header string direct from a previous request
+ // Assume it's a header string direct from a previous request.
$pairs = explode( ';', $data );
- // Special handling for first pair; name=value. Also be careful of "=" in value
+ // Special handling for first pair; name=value. Also be careful of "=" in value.
$name = trim( substr( $pairs[0], 0, strpos( $pairs[0], '=' ) ) );
$value = substr( $pairs[0], strpos( $pairs[0], '=' ) + 1 );
$this->name = $name;
$this->value = urldecode( $value );
- array_shift( $pairs ); //Removes name=value from items.
- // Set everything else as a property
+ // Removes name=value from items.
+ array_shift( $pairs );
+
+ // Set everything else as a property.
foreach ( $pairs as $pair ) {
$pair = rtrim($pair);
- if ( empty($pair) ) //Handles the cookie ending in ; which results in a empty final pair
+
+ // Handle the cookie ending in ; which results in a empty final pair.
+ if ( empty($pair) )
continue;
list( $key, $val ) = strpos( $pair, '=' ) ? explode( '=', $pair ) : array( $pair, '' );
@@ -1777,13 +1985,13 @@ class WP_Http_Cookie {
}
} else {
if ( !isset( $data['name'] ) )
- return false;
+ return;
- // Set properties based directly on parameters
- $this->name = $data['name'];
- $this->value = isset( $data['value'] ) ? $data['value'] : '';
- $this->path = isset( $data['path'] ) ? $data['path'] : '';
- $this->domain = isset( $data['domain'] ) ? $data['domain'] : '';
+ // Set properties based directly on parameters.
+ foreach ( array( 'name', 'value', 'path', 'domain', 'port' ) as $field ) {
+ if ( isset( $data[ $field ] ) )
+ $this->$field = $data[ $field ];
+ }
if ( isset( $data['expires'] ) )
$this->expires = is_int( $data['expires'] ) ? $data['expires'] : strtotime( $data['expires'] );
@@ -1801,35 +2009,38 @@ class WP_Http_Cookie {
* @since 2.8.0
*
* @param string $url URL you intend to send this cookie to
- * @return boolean TRUE if allowed, FALSE otherwise.
+ * @return bool true if allowed, false otherwise.
*/
- function test( $url ) {
- // Expires - if expired then nothing else matters
- if ( time() > $this->expires )
+ public function test( $url ) {
+ if ( is_null( $this->name ) )
+ return false;
+
+ // Expires - if expired then nothing else matters.
+ if ( isset( $this->expires ) && time() > $this->expires )
return false;
- // Get details on the URL we're thinking about sending to
+ // Get details on the URL we're thinking about sending to.
$url = parse_url( $url );
- $url['port'] = isset( $url['port'] ) ? $url['port'] : 80;
+ $url['port'] = isset( $url['port'] ) ? $url['port'] : ( 'https' == $url['scheme'] ? 443 : 80 );
$url['path'] = isset( $url['path'] ) ? $url['path'] : '/';
- // Values to use for comparison against the URL
+ // Values to use for comparison against the URL.
$path = isset( $this->path ) ? $this->path : '/';
- $port = isset( $this->port ) ? $this->port : 80;
+ $port = isset( $this->port ) ? $this->port : null;
$domain = isset( $this->domain ) ? strtolower( $this->domain ) : strtolower( $url['host'] );
if ( false === stripos( $domain, '.' ) )
$domain .= '.local';
- // Host - very basic check that the request URL ends with the domain restriction (minus leading dot)
+ // Host - very basic check that the request URL ends with the domain restriction (minus leading dot).
$domain = substr( $domain, 0, 1 ) == '.' ? substr( $domain, 1 ) : $domain;
if ( substr( $url['host'], -strlen( $domain ) ) != $domain )
return false;
- // Port - supports "port-lists" in the format: "80,8000,8080"
- if ( !in_array( $url['port'], explode( ',', $port) ) )
+ // Port - supports "port-lists" in the format: "80,8000,8080".
+ if ( !empty( $port ) && !in_array( $url['port'], explode( ',', $port) ) )
return false;
- // Path - request path must start with path restriction
+ // Path - request path must start with path restriction.
if ( substr( $url['path'], 0, strlen( $path ) ) != $path )
return false;
@@ -1844,11 +2055,19 @@ class WP_Http_Cookie {
*
* @return string Header encoded cookie name and value.
*/
- function getHeaderValue() {
- if ( empty( $this->name ) || empty( $this->value ) )
+ public function getHeaderValue() {
+ if ( ! isset( $this->name ) || ! isset( $this->value ) )
return '';
- return $this->name . '=' . urlencode( $this->value );
+ /**
+ * Filter the header-encoded cookie value.
+ *
+ * @since 3.4.0
+ *
+ * @param string $value The cookie value.
+ * @param string $name The cookie name.
+ */
+ return $this->name . '=' . apply_filters( 'wp_http_cookie_value', $this->value, $this->name );
}
/**
@@ -1859,7 +2078,7 @@ class WP_Http_Cookie {
*
* @return string
*/
- function getFullHeader() {
+ public function getFullHeader() {
return 'Cookie: ' . $this->getHeaderValue();
}
}
@@ -1869,7 +2088,7 @@ class WP_Http_Cookie {
*
* Includes RFC 1950, RFC 1951, and RFC 1952.
*
- * @since 2.8
+ * @since 2.8.0
* @package WordPress
* @subpackage HTTP
*/
@@ -1880,14 +2099,16 @@ class WP_Http_Encoding {
*
* Supports the RFC 1951 standard.
*
- * @since 2.8
+ * @since 2.8.0
+ *
+ * @static
*
* @param string $raw String to compress.
* @param int $level Optional, default is 9. Compression level, 9 is highest.
* @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports.
- * @return string|bool False on failure.
+ * @return string|false False on failure.
*/
- function compress( $raw, $level = 9, $supports = null ) {
+ public static function compress( $raw, $level = 9, $supports = null ) {
return gzdeflate( $raw, $level );
}
@@ -1899,13 +2120,15 @@ class WP_Http_Encoding {
* 1952 standard gzip decode will be attempted. If all fail, then the
* original compressed string will be returned.
*
- * @since 2.8
+ * @since 2.8.0
+ *
+ * @static
*
* @param string $compressed String to decompress.
* @param int $length The optional length of the compressed data.
* @return string|bool False on failure.
*/
- function decompress( $compressed, $length = null ) {
+ public static function decompress( $compressed, $length = null ) {
if ( empty($compressed) )
return $compressed;
@@ -1913,7 +2136,7 @@ class WP_Http_Encoding {
if ( false !== ( $decompressed = @gzinflate( $compressed ) ) )
return $decompressed;
- if ( false !== ( $decompressed = WP_Http_Encoding::compatible_gzinflate( $compressed ) ) )
+ if ( false !== ( $decompressed = self::compatible_gzinflate( $compressed ) ) )
return $decompressed;
if ( false !== ( $decompressed = @gzuncompress( $compressed ) ) )
@@ -1932,18 +2155,28 @@ class WP_Http_Encoding {
/**
* Decompression of deflated string while staying compatible with the majority of servers.
*
- * Certain Servers will return deflated data with headers which PHP's gziniflate()
- * function cannot handle out of the box. The following function lifted from
- * http://au2.php.net/manual/en/function.gzinflate.php#77336 will attempt to deflate
- * the various return forms used.
+ * Certain Servers will return deflated data with headers which PHP's gzinflate()
+ * function cannot handle out of the box. The following function has been created from
+ * various snippets on the gzinflate() PHP documentation.
+ *
+ * Warning: Magic numbers within. Due to the potential different formats that the compressed
+ * data may be returned in, some "magic offsets" are needed to ensure proper decompression
+ * takes place. For a simple progmatic way to determine the magic offset in use, see:
+ * https://core.trac.wordpress.org/ticket/18273
*
* @since 2.8.1
+ * @link https://core.trac.wordpress.org/ticket/18273
+ * @link http://au2.php.net/manual/en/function.gzinflate.php#70875
* @link http://au2.php.net/manual/en/function.gzinflate.php#77336
*
+ * @static
+ *
* @param string $gzData String to decompress.
* @return string|bool False on failure.
*/
- function compatible_gzinflate($gzData) {
+ public static function compatible_gzinflate($gzData) {
+
+ // Compressed data might contain a full header, if so strip it for gzinflate().
if ( substr($gzData, 0, 3) == "\x1f\x8b\x08" ) {
$i = 10;
$flg = ord( substr($gzData, 3, 1) );
@@ -1959,57 +2192,95 @@ class WP_Http_Encoding {
if ( $flg & 2 )
$i = $i + 2;
}
- return gzinflate( substr($gzData, $i, -8) );
- } else {
- return false;
+ $decompressed = @gzinflate( substr($gzData, $i, -8) );
+ if ( false !== $decompressed )
+ return $decompressed;
}
+
+ // Compressed data from java.util.zip.Deflater amongst others.
+ $decompressed = @gzinflate( substr($gzData, 2) );
+ if ( false !== $decompressed )
+ return $decompressed;
+
+ return false;
}
/**
* What encoding types to accept and their priority values.
*
- * @since 2.8
+ * @since 2.8.0
+ *
+ * @static
*
+ * @param string $url
+ * @param array $args
* @return string Types of encoding to accept.
*/
- function accept_encoding() {
+ public static function accept_encoding( $url, $args ) {
$type = array();
- if ( function_exists( 'gzinflate' ) )
- $type[] = 'deflate;q=1.0';
+ $compression_enabled = self::is_available();
- if ( function_exists( 'gzuncompress' ) )
- $type[] = 'compress;q=0.5';
+ if ( ! $args['decompress'] ) // Decompression specifically disabled.
+ $compression_enabled = false;
+ elseif ( $args['stream'] ) // Disable when streaming to file.
+ $compression_enabled = false;
+ elseif ( isset( $args['limit_response_size'] ) ) // If only partial content is being requested, we won't be able to decompress it.
+ $compression_enabled = false;
- if ( function_exists( 'gzdecode' ) )
- $type[] = 'gzip;q=0.5';
+ if ( $compression_enabled ) {
+ if ( function_exists( 'gzinflate' ) )
+ $type[] = 'deflate;q=1.0';
+
+ if ( function_exists( 'gzuncompress' ) )
+ $type[] = 'compress;q=0.5';
+
+ if ( function_exists( 'gzdecode' ) )
+ $type[] = 'gzip;q=0.5';
+ }
+
+ /**
+ * Filter the allowed encoding types.
+ *
+ * @since 3.6.0
+ *
+ * @param array $type Encoding types allowed. Accepts 'gzinflate',
+ * 'gzuncompress', 'gzdecode'.
+ * @param string $url URL of the HTTP request.
+ * @param array $args HTTP request arguments.
+ */
+ $type = apply_filters( 'wp_http_accept_encoding', $type, $url, $args );
return implode(', ', $type);
}
/**
- * What enconding the content used when it was compressed to send in the headers.
+ * What encoding the content used when it was compressed to send in the headers.
+ *
+ * @since 2.8.0
*
- * @since 2.8
+ * @static
*
* @return string Content-Encoding string to send in the header.
*/
- function content_encoding() {
+ public static function content_encoding() {
return 'deflate';
}
/**
* Whether the content be decoded based on the headers.
*
- * @since 2.8
+ * @since 2.8.0
+ *
+ * @static
*
* @param array|string $headers All of the available headers.
* @return bool
*/
- function should_decode($headers) {
+ public static function should_decode($headers) {
if ( is_array( $headers ) ) {
if ( array_key_exists('content-encoding', $headers) && ! empty( $headers['content-encoding'] ) )
return true;
- } else if ( is_string( $headers ) ) {
+ } elseif ( is_string( $headers ) ) {
return ( stripos($headers, 'content-encoding:') !== false );
}
@@ -2023,11 +2294,13 @@ class WP_Http_Encoding {
* ensure that the functions all exist in the PHP version and aren't
* disabled.
*
- * @since 2.8
+ * @since 2.8.0
+ *
+ * @static
*
* @return bool
*/
- function is_available() {
+ public static function is_available() {
return ( function_exists('gzuncompress') || function_exists('gzdeflate') || function_exists('gzinflate') );
}
}