--- a/wp/wp-includes/class-http.php Tue Jun 09 11:14:17 2015 +0000
+++ b/wp/wp-includes/class-http.php Mon Oct 14 17:39:30 2019 +0200
@@ -1,19 +1,21 @@
<?php
/**
- * Simple and uniform HTTP request API.
- *
- * 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 https://core.trac.wordpress.org/ticket/4779 HTTP API Proposal
+ * HTTP API: WP_Http class
*
* @package WordPress
* @subpackage HTTP
* @since 2.7.0
*/
+if ( ! class_exists( 'Requests' ) ) {
+ require( ABSPATH . WPINC . '/class-requests.php' );
+
+ Requests::register_autoloader();
+ Requests::set_certificate_path( ABSPATH . WPINC . '/certificates/ca-bundle.crt' );
+}
+
/**
- * WordPress HTTP Class for managing HTTP Transports and making HTTP requests.
+ * Core class used for managing HTTP transports and making HTTP requests.
*
* This class is used to consistently make outgoing HTTP requests easy for developers
* while still being compatible with the many PHP configurations under which
@@ -21,19 +23,81 @@
*
* Debugging includes several actions, which pass different variables for debugging the HTTP API.
*
- * @package WordPress
- * @subpackage HTTP
* @since 2.7.0
*/
class WP_Http {
+ // Aliases for HTTP response codes.
+ const HTTP_CONTINUE = 100;
+ const SWITCHING_PROTOCOLS = 101;
+ const PROCESSING = 102;
+
+ const OK = 200;
+ const CREATED = 201;
+ const ACCEPTED = 202;
+ const NON_AUTHORITATIVE_INFORMATION = 203;
+ const NO_CONTENT = 204;
+ const RESET_CONTENT = 205;
+ const PARTIAL_CONTENT = 206;
+ const MULTI_STATUS = 207;
+ const IM_USED = 226;
+
+ const MULTIPLE_CHOICES = 300;
+ const MOVED_PERMANENTLY = 301;
+ const FOUND = 302;
+ const SEE_OTHER = 303;
+ const NOT_MODIFIED = 304;
+ const USE_PROXY = 305;
+ const RESERVED = 306;
+ const TEMPORARY_REDIRECT = 307;
+ const PERMANENT_REDIRECT = 308;
+
+ const BAD_REQUEST = 400;
+ const UNAUTHORIZED = 401;
+ const PAYMENT_REQUIRED = 402;
+ const FORBIDDEN = 403;
+ const NOT_FOUND = 404;
+ const METHOD_NOT_ALLOWED = 405;
+ const NOT_ACCEPTABLE = 406;
+ const PROXY_AUTHENTICATION_REQUIRED = 407;
+ const REQUEST_TIMEOUT = 408;
+ const CONFLICT = 409;
+ const GONE = 410;
+ const LENGTH_REQUIRED = 411;
+ const PRECONDITION_FAILED = 412;
+ const REQUEST_ENTITY_TOO_LARGE = 413;
+ const REQUEST_URI_TOO_LONG = 414;
+ const UNSUPPORTED_MEDIA_TYPE = 415;
+ const REQUESTED_RANGE_NOT_SATISFIABLE = 416;
+ const EXPECTATION_FAILED = 417;
+ const IM_A_TEAPOT = 418;
+ const MISDIRECTED_REQUEST = 421;
+ const UNPROCESSABLE_ENTITY = 422;
+ const LOCKED = 423;
+ const FAILED_DEPENDENCY = 424;
+ const UPGRADE_REQUIRED = 426;
+ const PRECONDITION_REQUIRED = 428;
+ const TOO_MANY_REQUESTS = 429;
+ const REQUEST_HEADER_FIELDS_TOO_LARGE = 431;
+ const UNAVAILABLE_FOR_LEGAL_REASONS = 451;
+
+ const INTERNAL_SERVER_ERROR = 500;
+ const NOT_IMPLEMENTED = 501;
+ const BAD_GATEWAY = 502;
+ const SERVICE_UNAVAILABLE = 503;
+ const GATEWAY_TIMEOUT = 504;
+ const HTTP_VERSION_NOT_SUPPORTED = 505;
+ const VARIANT_ALSO_NEGOTIATES = 506;
+ const INSUFFICIENT_STORAGE = 507;
+ const NOT_EXTENDED = 510;
+ const NETWORK_AUTHENTICATION_REQUIRED = 511;
+
/**
* Send an HTTP request to a URI.
*
* 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
*
* @param string $url The request URL.
@@ -49,8 +113,8 @@
* @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 'WordPress/' . get_bloginfo( 'version' ) . '; ' . get_bloginfo( 'url' ).
+ * @type bool $reject_unsafe_urls Whether to pass URLs through 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,
@@ -81,12 +145,10 @@
* A WP_Error instance upon error.
*/
public function request( $url, $args = array() ) {
- global $wp_version;
-
$defaults = array(
'method' => 'GET',
/**
- * Filter the timeout value for an HTTP request.
+ * Filters the timeout value for an HTTP request.
*
* @since 2.7.0
*
@@ -95,7 +157,7 @@
*/
'timeout' => apply_filters( 'http_request_timeout', 5 ),
/**
- * Filter the number of redirects allowed during an HTTP request.
+ * Filters the number of redirects allowed during an HTTP request.
*
* @since 2.7.0
*
@@ -103,7 +165,7 @@
*/
'redirection' => apply_filters( 'http_request_redirection_count', 5 ),
/**
- * Filter the version of the HTTP protocol used in a request.
+ * Filters the version of the HTTP protocol used in a request.
*
* @since 2.7.0
*
@@ -112,15 +174,15 @@
*/
'httpversion' => apply_filters( 'http_request_version', '1.0' ),
/**
- * Filter the user agent value sent with an HTTP request.
+ * Filters 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' ) ),
+ 'user-agent' => apply_filters( 'http_headers_useragent', 'WordPress/' . get_bloginfo( 'version' ) . '; ' . get_bloginfo( 'url' ) ),
/**
- * Filter whether to pass URLs through wp_http_validate_url() in an HTTP request.
+ * Filters whether to pass URLs through wp_http_validate_url() in an HTTP request.
*
* @since 3.6.0
*
@@ -150,7 +212,7 @@
$r = wp_parse_args( $args, $defaults );
/**
- * Filter the arguments used in an HTTP request.
+ * Filters the arguments used in an HTTP request.
*
* @since 2.7.0
*
@@ -164,24 +226,32 @@
$r['_redirection'] = $r['redirection'];
/**
- * Filter whether to preempt an HTTP request's return.
+ * Filters whether to preempt an HTTP request's return value.
+ *
+ * Returning a non-false value from the filter will short-circuit the HTTP request and return
+ * early with that value. A filter should return either:
*
- * Returning a truthy value to the filter will short-circuit
- * the HTTP request and return early with that value.
+ * - An array containing 'headers', 'body', 'response', 'cookies', and 'filename' elements
+ * - A WP_Error instance
+ * - boolean false (to avoid short-circuiting the response)
+ *
+ * Returning any other value may result in unexpected behaviour.
*
* @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.
+ * @param false|array|WP_Error $preempt Whether to preempt an HTTP request's return value. 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;
if ( function_exists( 'wp_kses_bad_protocol' ) ) {
- if ( $r['reject_unsafe_urls'] )
+ if ( $r['reject_unsafe_urls'] ) {
$url = wp_http_validate_url( $url );
+ }
if ( $url ) {
$url = wp_kses_bad_protocol( $url, array( 'http', 'https', 'ssl' ) );
}
@@ -189,114 +259,234 @@
$arrURL = @parse_url( $url );
- if ( empty( $url ) || empty( $arrURL['scheme'] ) )
+ if ( empty( $url ) || empty( $arrURL['scheme'] ) ) {
return new WP_Error('http_request_failed', __('A valid URL was not provided.'));
-
- if ( $this->block_request( $url ) )
- return new WP_Error( 'http_request_failed', __( 'User has blocked requests through HTTP.' ) );
-
- /*
- * Determine if this is a https call and pass that on to the transport functions
- * so that we can blacklist the transports that do not support ssl verification
- */
- $r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl';
+ }
- // Determine if this request is to OUR install of WordPress.
- $homeURL = parse_url( get_bloginfo( 'url' ) );
- $r['local'] = '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'] = wp_unique_filename( get_temp_dir(), basename( $url ) );
+ if ( $this->block_request( $url ) ) {
+ return new WP_Error( 'http_request_failed', __( 'User has blocked requests through HTTP.' ) );
}
- /*
- * Force some settings if we are streaming to a file and check for existence and perms
- * of destination directory.
- */
+ // 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'] ) {
+ if ( empty( $r['filename'] ) ) {
+ $r['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
$r['blocking'] = true;
- if ( ! wp_is_writable( dirname( $r['filename'] ) ) )
+ 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'] ) )
+ if ( is_null( $r['headers'] ) ) {
$r['headers'] = array();
+ }
+ // WP allows passing in headers as a string, weirdly.
if ( ! is_array( $r['headers'] ) ) {
- $processedHeaders = self::processHeaders( $r['headers'], $url );
+ $processedHeaders = WP_Http::processHeaders( $r['headers'] );
$r['headers'] = $processedHeaders['headers'];
}
- if ( isset( $r['headers']['User-Agent'] ) ) {
- $r['user-agent'] = $r['headers']['User-Agent'];
- unset( $r['headers']['User-Agent'] );
+ // Setup arguments
+ $headers = $r['headers'];
+ $data = $r['body'];
+ $type = $r['method'];
+ $options = array(
+ 'timeout' => $r['timeout'],
+ 'useragent' => $r['user-agent'],
+ 'blocking' => $r['blocking'],
+ 'hooks' => new WP_HTTP_Requests_Hooks( $url, $r ),
+ );
+
+ // Ensure redirects follow browser behaviour.
+ $options['hooks']->register( 'requests.before_redirect', array( get_class(), 'browser_redirect_compatibility' ) );
+
+ // Validate redirected URLs.
+ if ( function_exists( 'wp_kses_bad_protocol' ) && $r['reject_unsafe_urls'] ) {
+ $options['hooks']->register( 'requests.before_redirect', array( get_class(), 'validate_redirects' ) );
+ }
+
+ if ( $r['stream'] ) {
+ $options['filename'] = $r['filename'];
+ }
+ if ( empty( $r['redirection'] ) ) {
+ $options['follow_redirects'] = false;
+ } else {
+ $options['redirects'] = $r['redirection'];
+ }
+
+ // Use byte limit, if we can
+ if ( isset( $r['limit_response_size'] ) ) {
+ $options['max_bytes'] = $r['limit_response_size'];
}
- if ( isset( $r['headers']['user-agent'] ) ) {
- $r['user-agent'] = $r['headers']['user-agent'];
- unset( $r['headers']['user-agent'] );
+ // If we've got cookies, use and convert them to Requests_Cookie.
+ if ( ! empty( $r['cookies'] ) ) {
+ $options['cookies'] = WP_Http::normalize_cookies( $r['cookies'] );
+ }
+
+ // SSL certificate handling
+ if ( ! $r['sslverify'] ) {
+ $options['verify'] = false;
+ $options['verifyname'] = false;
+ } else {
+ $options['verify'] = $r['sslcertificates'];
+ }
+
+ // All non-GET/HEAD requests should put the arguments in the form body.
+ if ( 'HEAD' !== $type && 'GET' !== $type ) {
+ $options['data_format'] = 'body';
}
- if ( '1.1' == $r['httpversion'] && !isset( $r['headers']['connection'] ) ) {
- $r['headers']['connection'] = 'close';
+ /**
+ * Filters 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.
+ */
+ $options['verify'] = apply_filters( 'https_ssl_verify', $options['verify'] );
+
+ // Check for proxies.
+ $proxy = new WP_HTTP_Proxy();
+ if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
+ $options['proxy'] = new Requests_Proxy_HTTP( $proxy->host() . ':' . $proxy->port() );
+
+ if ( $proxy->use_authentication() ) {
+ $options['proxy']->use_authentication = true;
+ $options['proxy']->user = $proxy->username();
+ $options['proxy']->pass = $proxy->password();
+ }
}
- // Construct Cookie: header if any cookies are set.
- self::buildCookieHeader( $r );
-
- // Avoid issues where mbstring.func_overload is enabled.
+ // 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;
- }
+ try {
+ $requests_response = Requests::request( $url, $headers, $data, $type, $options );
- if ( ( ! is_null( $r['body'] ) && '' != $r['body'] ) || 'POST' == $r['method'] || 'PUT' == $r['method'] ) {
- if ( is_array( $r['body'] ) || is_object( $r['body'] ) ) {
- $r['body'] = http_build_query( $r['body'], null, '&' );
+ // Convert the response into an array
+ $http_response = new WP_HTTP_Requests_Response( $requests_response, $r['filename'] );
+ $response = $http_response->to_array();
- 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'] );
+ // Add the original object to the array.
+ $response['http_response'] = $http_response;
}
-
- $response = $this->_dispatch_request( $url, $r );
+ catch ( Requests_Exception $e ) {
+ $response = new WP_Error( 'http_request_failed', $e->getMessage() );
+ }
reset_mbstring_encoding();
- if ( is_wp_error( $response ) )
+ /**
+ * 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 $r HTTP request arguments.
+ * @param string $url The request URL.
+ */
+ do_action( 'http_api_debug', $response, 'response', 'Requests', $r, $url );
+ if ( is_wp_error( $response ) ) {
return $response;
+ }
+
+ if ( ! $r['blocking'] ) {
+ return array(
+ 'headers' => array(),
+ 'body' => '',
+ 'response' => array(
+ 'code' => false,
+ 'message' => false,
+ ),
+ 'cookies' => array(),
+ 'http_response' => null,
+ );
+ }
- // 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;
- }
+ /**
+ * Filters the HTTP API response immediately before the response is returned.
+ *
+ * @since 2.9.0
+ *
+ * @param array $response HTTP response.
+ * @param array $r HTTP request arguments.
+ * @param string $url The request URL.
+ */
+ return apply_filters( 'http_response', $response, $r, $url );
+ }
+
+ /**
+ * Normalizes cookies for using in Requests.
+ *
+ * @since 4.6.0
+ * @static
+ *
+ * @param array $cookies List of cookies to send with the request.
+ * @return Requests_Cookie_Jar Cookie holder object.
+ */
+ public static function normalize_cookies( $cookies ) {
+ $cookie_jar = new Requests_Cookie_Jar();
+
+ foreach ( $cookies as $name => $value ) {
+ if ( $value instanceof WP_Http_Cookie ) {
+ $cookie_jar[ $value->name ] = new Requests_Cookie( $value->name, $value->value, $value->get_attributes() );
+ } elseif ( is_scalar( $value ) ) {
+ $cookie_jar[ $name ] = new Requests_Cookie( $name, $value );
}
}
- return $response;
+ return $cookie_jar;
+ }
+
+ /**
+ * Match redirect behaviour to browser handling.
+ *
+ * Changes 302 redirects from POST to GET to match browser handling. Per
+ * RFC 7231, user agents can deviate from the strict reading of the
+ * specification for compatibility purposes.
+ *
+ * @since 4.6.0
+ * @static
+ *
+ * @param string $location URL to redirect to.
+ * @param array $headers Headers for the redirect.
+ * @param string|array $data Body to send with the request.
+ * @param array $options Redirect request options.
+ * @param Requests_Response $original Response object.
+ */
+ public static function browser_redirect_compatibility( $location, $headers, $data, &$options, $original ) {
+ // Browser compat
+ if ( $original->status_code === 302 ) {
+ $options['type'] = Requests::GET;
+ }
+ }
+
+ /**
+ * Validate redirected URLs.
+ *
+ * @since 4.7.5
+ *
+ * @throws Requests_Exception On unsuccessful URL validation
+ * @param string $location URL to redirect to.
+ */
+ public static function validate_redirects( $location ) {
+ if ( ! wp_http_validate_url( $location ) ) {
+ throw new Requests_Exception( __('A valid URL was not provided.'), 'wp_http.redirect_failed_validation' );
+ }
}
/**
* 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
@@ -304,21 +494,26 @@
* @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 ) {
+ $transports = array( 'curl', 'streams' );
+
/**
- * Filter which HTTP transports are available and in what order.
+ * Filters 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.
+ * @param array $transports 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 );
+ $request_order = apply_filters( 'http_api_transports', $transports, $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;
+ if ( in_array( $transport, $transports ) ) {
+ $transport = ucfirst( $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 ) )
@@ -339,7 +534,8 @@
* The order for requests is cURL, and then PHP Streams.
*
* @since 3.2.0
- * @access private
+ *
+ * @static
*
* @param string $url URL to Request
* @param array $args Request arguments
@@ -358,24 +554,14 @@
$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.
- */
+ /** This action is documented in wp-includes/class-http.php */
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.
+ * Filters the HTTP API response immediately before the response is returned.
*
* @since 2.9.0
*
@@ -391,7 +577,6 @@
*
* Used for sending data that is expected to be in the body.
*
- * @access public
* @since 2.7.0
*
* @param string $url The request URL.
@@ -409,7 +594,6 @@
*
* Used for sending data that is expected to be in the body.
*
- * @access public
* @since 2.7.0
*
* @param string $url The request URL.
@@ -427,7 +611,6 @@
*
* Used for sending data that is expected to be in the body.
*
- * @access public
* @since 2.7.0
*
* @param string $url The request URL.
@@ -443,7 +626,6 @@
/**
* Parses the responses and splits the parts into headers and body.
*
- * @access public
* @static
* @since 2.7.0
*
@@ -462,7 +644,6 @@
* If an array is given then it is assumed to be raw header data with numeric keys with the
* headers as the values. No headers must be passed that were already processed.
*
- * @access public
* @static
* @since 2.7.0
*
@@ -540,8 +721,7 @@
* 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
+ * @since 2.8.0
* @static
*
* @param array $r Full array of args passed into ::request()
@@ -551,7 +731,7 @@
// 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 ) );
+ $r['cookies'][ $name ] = new WP_Http_Cookie( array( 'name' => $name, 'value' => $value ) );
}
$cookies_header = '';
@@ -569,9 +749,8 @@
*
* Based off the HTTP http_encoding_dechunk function.
*
- * @link http://tools.ietf.org/html/rfc2616#section-19.4.6 Process for chunked decoding.
+ * @link https://tools.ietf.org/html/rfc2616#section-19.4.6 Process for chunked decoding.
*
- * @access public
* @since 2.7.0
* @static
*
@@ -615,7 +794,7 @@
* prevent plugins from working and core functionality, if you don't include api.wordpress.org.
*
* You block external URL requests by defining WP_HTTP_BLOCK_EXTERNAL as true in your wp-config.php
- * file and this will only allow localhost and your blog to make requests. The constant
+ * file and this will only allow localhost and your site to make requests. The constant
* WP_ACCESSIBLE_HOSTS will allow additional hosts to go through for requests. The format of the
* WP_ACCESSIBLE_HOSTS constant is a comma separated list of hostnames to allow, wildcard domains
* are supported, eg *.wordpress.org will allow for all subdomains of wordpress.org to be contacted.
@@ -624,6 +803,9 @@
* @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.
*/
@@ -641,7 +823,7 @@
// 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.
+ * Filters whether to block local requests through the proxy.
*
* @since 2.8.0
*
@@ -654,9 +836,9 @@
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, '*') ) {
@@ -675,45 +857,18 @@
}
/**
- * A wrapper for PHP's parse_url() function that handles edgecases in < PHP 5.4.7
- *
- * 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+.
+ * Used as a wrapper for PHP's parse_url() function that handles edgecases in < PHP 5.4.7.
*
- * Error suppression is used as prior to PHP 5.3.3, an E_WARNING would be generated
- * when URL parsing failed.
- *
- * @since 4.1.0
- * @access protected
+ * @deprecated 4.4.0 Use wp_parse_url()
+ * @see wp_parse_url()
*
* @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.
*/
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 {
- return $parts;
- }
- }
-
- // < 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}";
- }
-
- return $parts;
+ _deprecated_function( __METHOD__, '4.4.0', 'wp_parse_url()' );
+ return wp_parse_url( $url );
}
/**
@@ -723,7 +878,8 @@
*
* @since 3.4.0
*
- * @access public
+ * @static
+ *
* @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.
@@ -732,11 +888,11 @@
if ( empty( $url ) )
return $maybe_relative_path;
- if ( ! $url_parts = WP_HTTP::parse_url( $url ) ) {
+ if ( ! $url_parts = wp_parse_url( $url ) ) {
return $maybe_relative_path;
}
- if ( ! $relative_url_parts = WP_HTTP::parse_url( $maybe_relative_path ) ) {
+ if ( ! $relative_url_parts = wp_parse_url( $maybe_relative_path ) ) {
return $maybe_relative_path;
}
@@ -793,6 +949,7 @@
* 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.
@@ -818,7 +975,7 @@
if ( is_array( $redirect_location ) )
$redirect_location = array_pop( $redirect_location );
- $redirect_location = WP_HTTP::make_absolute_url( $redirect_location, $url );
+ $redirect_location = WP_Http::make_absolute_url( $redirect_location, $url );
// POST requests should not POST to a redirected location.
if ( 'POST' == $args['method'] ) {
@@ -845,7 +1002,7 @@
* 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
+ * @link http://home.deds.nl/~aeron/regex/ for IPv6 regex
*
* @since 3.7.0
* @static
@@ -864,1413 +1021,3 @@
}
}
-
-/**
- * HTTP request method uses PHP Streams to retrieve the url.
- *
- * @since 2.7.0
- * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
- */
-class WP_Http_Streams {
- /**
- * Send a HTTP request to a URI using PHP Streams.
- *
- * @see WP_Http::request For default options descriptions.
- *
- * @since 2.7.0
- * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
- *
- * @access public
- * @param string $url The request URL.
- * @param string|array $args Optional. Override the defaults.
- * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
- */
- public function request($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'] );
- } elseif ( isset( $r['headers']['user-agent'] ) ) {
- $r['user-agent'] = $r['headers']['user-agent'];
- unset( $r['headers']['user-agent'] );
- }
-
- // Construct Cookie: header if any cookies are set.
- WP_Http::buildCookieHeader( $r );
-
- $arrURL = parse_url($url);
-
- $connect_host = $arrURL['host'];
-
- $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;
- }
- }
-
- // Always pass a Path, defaulting to the root in cases such as http://example.com
- if ( ! isset( $arrURL['path'] ) ) {
- $arrURL['path'] = '/';
- }
-
- 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'] );
- }
-
- /*
- * 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';
-
- $connect_host = $secure_transport ? 'ssl://' . $connect_host : 'tcp://' . $connect_host;
-
- $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 );
- }
-
- $proxy = new WP_HTTP_Proxy();
-
- $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,
- )
- ) );
-
- $timeout = (int) floor( $r['timeout'] );
- $utimeout = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
- $connect_timeout = max( $timeout, 1 );
-
- // Store error number.
- $connection_error = null;
-
- // Store error string.
- $connection_error_str = null;
-
- if ( !WP_DEBUG ) {
- // In the event that the SSL connection fails, silence the many PHP Warnings.
- if ( $secure_transport )
- $error_reporting = error_reporting(0);
-
- 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 ( $secure_transport )
- error_reporting( $error_reporting );
-
- } 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
- $handle = stream_socket_client( $connect_host . ':' . $arrURL['port'], $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
- }
-
- 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.' ) );
-
- return new WP_Error('http_request_failed', $connection_error . ': ' . $connection_error_str );
- }
-
- // 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.' ) );
- }
-
- stream_set_timeout( $handle, $timeout, $utimeout );
-
- if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) //Some proxies require full URL in this field.
- $requestPath = $url;
- else
- $requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );
-
- $strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
-
- $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'] )
- );
-
- if ( $include_port_in_host_header ) {
- $strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n";
- } else {
- $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
- }
-
- if ( isset($r['user-agent']) )
- $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";
-
- if ( is_array($r['headers']) ) {
- foreach ( (array) $r['headers'] as $header => $headerValue )
- $strHeaders .= $header . ': ' . $headerValue . "\r\n";
- } else {
- $strHeaders .= $r['headers'];
- }
-
- if ( $proxy->use_authentication() )
- $strHeaders .= $proxy->authentication_header() . "\r\n";
-
- $strHeaders .= "\r\n";
-
- if ( ! is_null($r['body']) )
- $strHeaders .= $r['body'];
-
- fwrite($handle, $strHeaders);
-
- if ( ! $r['blocking'] ) {
- stream_set_blocking( $handle, 0 );
- fclose( $handle );
- return array( 'headers' => array(), 'body' => '', 'response' => array('code' => false, 'message' => false), 'cookies' => array() );
- }
-
- $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'] = '';
- }
- }
-
- $this_block_size = strlen( $block );
-
- 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 );
- }
-
- $bytes_written_to_file = fwrite( $stream_handle, $block );
-
- 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.' ) );
- }
-
- $bytes_written += $bytes_written_to_file;
-
- $keep_reading = !isset( $r['limit_response_size'] ) || $bytes_written < $r['limit_response_size'];
- }
-
- fclose( $stream_handle );
-
- } 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'] ) );
- }
-
- $process = WP_Http::processResponse( $strResponse );
- unset( $strResponse );
-
- }
-
- fclose( $handle );
-
- $arrHeaders = WP_Http::processHeaders( $process['headers'], $url );
-
- $response = array(
- 'headers' => $arrHeaders['headers'],
- // Not yet processed.
- 'body' => null,
- 'response' => $arrHeaders['response'],
- 'cookies' => $arrHeaders['cookies'],
- 'filename' => $r['filename']
- );
-
- // Handle redirects.
- if ( false !== ( $redirect_response = WP_HTTP::handle_redirects( $url, $r, $response ) ) )
- return $redirect_response;
-
- // 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'] );
-
- if ( isset( $r['limit_response_size'] ) && strlen( $process['body'] ) > $r['limit_response_size'] )
- $process['body'] = substr( $process['body'], 0, $r['limit_response_size'] );
-
- $response['body'] = $process['body'];
-
- return $response;
- }
-
- /**
- * 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 );
-
- if ( empty( $context_options['ssl']['peer_certificate'] ) )
- return false;
-
- $cert = openssl_x509_parse( $context_options['ssl']['peer_certificate'] );
- if ( ! $cert )
- return false;
-
- /*
- * 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'] );
- }
-
- // 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;
-
- // 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 in_array( strtolower( $wildcard_host ), $certificate_hostnames );
- }
-
- /**
- * 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.
- */
- 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.
- *
- * Requires the Curl extension to be installed.
- *
- * @package WordPress
- * @subpackage HTTP
- * @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 The request URL.
- * @param string|array $args Optional. Override the defaults.
- * @return array|WP_Error Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error
- */
- public function request($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'] );
- } elseif ( isset( $r['headers']['user-agent'] ) ) {
- $r['user-agent'] = $r['headers']['user-agent'];
- unset( $r['headers']['user-agent'] );
- }
-
- // Construct Cookie: header if any cookies are set.
- WP_Http::buildCookieHeader( $r );
-
- $handle = curl_init();
-
- // cURL offers really easy proxy support.
- $proxy = new WP_HTTP_Proxy();
-
- if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
-
- 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() ) {
- curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY );
- curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() );
- }
- }
-
- $is_local = isset($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 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 === 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'] );
-
- /*
- * 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':
- curl_setopt( $handle, CURLOPT_NOBODY, true );
- break;
- case 'POST':
- curl_setopt( $handle, CURLOPT_POST, true );
- curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );
- break;
- case 'PUT':
- curl_setopt( $handle, CURLOPT_CUSTOMREQUEST, 'PUT' );
- curl_setopt( $handle, CURLOPT_POSTFIELDS, $r['body'] );
- break;
- 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' ) );
- }
-
- curl_setopt( $handle, CURLOPT_HEADER, false );
-
- if ( isset( $r['limit_response_size'] ) )
- $this->max_body_length = intval( $r['limit_response_size'] );
- else
- $this->max_body_length = false;
-
- // 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.
- $headers = array();
- foreach ( $r['headers'] as $name => $value ) {
- $headers[] = "{$name}: $value";
- }
- curl_setopt( $handle, CURLOPT_HTTPHEADER, $headers );
- }
-
- if ( $r['httpversion'] == '1.0' )
- curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0 );
- else
- curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );
-
- /**
- * Fires before the cURL request is executed.
- *
- * Cookies are not currently handled by the HTTP API. This action allows
- * plugins to handle cookies themselves.
- *
- * @since 2.8.0
- *
- * @param resource &$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() );
- }
-
- 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.' ) );
- }
- }
-
- curl_close( $handle );
-
- 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 );
-
- $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;
- }
-
- /**
- * Whether this class can be used for retrieving an URL.
- *
- * @static
- * @since 2.7.0
- *
- * @return boolean False means this class can not be used, true means it can.
- */
- public static function test( $args = array() ) {
- if ( ! function_exists( 'curl_init' ) || ! function_exists( 'curl_exec' ) )
- 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 );
- }
-}
-
-/**
- * Adds Proxy support to the WordPress HTTP API.
- *
- * There are caveats to proxy support. It requires that defines be made in the wp-config.php file to
- * enable proxy support. There are also a few filters that plugins can hook into for some of the
- * constants.
- *
- * Please note that only BASIC authentication is supported by most transports.
- * cURL MAY support more methods (such as NTLM authentication) depending on your environment.
- *
- * The constants are as follows:
- * <ol>
- * <li>WP_PROXY_HOST - Enable proxy support and host for connecting.</li>
- * <li>WP_PROXY_PORT - Proxy port for connection. No default, must be defined.</li>
- * <li>WP_PROXY_USERNAME - Proxy username, if it requires authentication.</li>
- * <li>WP_PROXY_PASSWORD - Proxy password, if it requires authentication.</li>
- * <li>WP_PROXY_BYPASS_HOSTS - Will prevent the hosts in this list from going through the proxy.
- * You do not need to have localhost and the blog host in this list, because they will not be passed
- * through the proxy. The list should be presented in a comma separated list, wildcards using * are supported, eg. *.wordpress.org</li>
- * </ol>
- *
- * 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 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 2.8.0
- *
- * @use WP_PROXY_HOST
- * @use WP_PROXY_PORT
- *
- * @return bool
- */
- public function is_enabled() {
- return defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT');
- }
-
- /**
- * Whether authentication should be used.
- *
- * @since 2.8.0
- *
- * @use WP_PROXY_USERNAME
- * @use WP_PROXY_PASSWORD
- *
- * @return bool
- */
- public function use_authentication() {
- return defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD');
- }
-
- /**
- * Retrieve the host for the proxy server.
- *
- * @since 2.8.0
- *
- * @return string
- */
- public function host() {
- if ( defined('WP_PROXY_HOST') )
- return WP_PROXY_HOST;
-
- return '';
- }
-
- /**
- * Retrieve the port for the proxy server.
- *
- * @since 2.8.0
- *
- * @return string
- */
- public function port() {
- if ( defined('WP_PROXY_PORT') )
- return WP_PROXY_PORT;
-
- return '';
- }
-
- /**
- * Retrieve the username for proxy authentication.
- *
- * @since 2.8.0
- *
- * @return string
- */
- public function username() {
- if ( defined('WP_PROXY_USERNAME') )
- return WP_PROXY_USERNAME;
-
- return '';
- }
-
- /**
- * Retrieve the password for proxy authentication.
- *
- * @since 2.8.0
- *
- * @return string
- */
- public function password() {
- if ( defined('WP_PROXY_PASSWORD') )
- return WP_PROXY_PASSWORD;
-
- return '';
- }
-
- /**
- * Retrieve authentication string for proxy authentication.
- *
- * @since 2.8.0
- *
- * @return string
- */
- public function authentication() {
- return $this->username() . ':' . $this->password();
- }
-
- /**
- * Retrieve header string for proxy authentication.
- *
- * @since 2.8.0
- *
- * @return string
- */
- public function authentication_header() {
- return 'Proxy-Authorization: Basic ' . base64_encode( $this->authentication() );
- }
-
- /**
- * Whether URL should be sent through the proxy server.
- *
- * We want to keep localhost and the blog URL from being sent through the proxy server, because
- * some proxies can not handle this. We also have the constant available for defining other
- * hosts that won't be sent through the proxy.
- *
- * @since 2.8.0
- *
- * @param string $uri URI to check.
- * @return bool True, to send through the proxy and false if, the proxy should not be used.
- */
- 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.
- if ( $check === false )
- return true;
-
- $home = parse_url( get_option('siteurl') );
-
- /**
- * 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 ) {
- $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( '\*', '.+', preg_quote( $host, '/' ) );
- $wildcard_regex = '/^(' . implode('|', $wildcard_regex) . ')$/i';
- }
- }
-
- if ( !empty($wildcard_regex) )
- return !preg_match($wildcard_regex, $check['host']);
- else
- return !in_array( $check['host'], $bypass_hosts );
- }
-}
-/**
- * Internal representation of a single cookie.
- *
- * Returned cookies are represented using this class, and when cookies are set, if they are not
- * already a WP_Http_Cookie() object, then they are turned into one.
- *
- * @todo The WordPress convention is to use underscores instead of camelCase for function and method
- * names. Need to switch to use underscores instead for the methods.
- *
- * @package WordPress
- * @subpackage HTTP
- * @since 2.8.0
- */
-class WP_Http_Cookie {
-
- /**
- * Cookie name.
- *
- * @since 2.8.0
- * @var string
- */
- public $name;
-
- /**
- * Cookie value.
- *
- * @since 2.8.0
- * @var string
- */
- public $value;
-
- /**
- * When the cookie expires.
- *
- * @since 2.8.0
- * @var string
- */
- public $expires;
-
- /**
- * Cookie URL path.
- *
- * @since 2.8.0
- * @var string
- */
- public $path;
-
- /**
- * Cookie Domain.
- *
- * @since 2.8.0
- * @var string
- */
- public $domain;
-
- /**
- * Sets up this cookie object.
- *
- * The parameter $data should be either an associative array containing the indices names below
- * or a header string detailing it.
- *
- * @since 2.8.0
- * @access public
- *
- * @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.
- */
- 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.
- $pairs = explode( ';', $data );
-
- // Special handling for first pair; name=value. Also be careful of "=" in value.
- $name = trim( substr( $pairs[0], 0, strpos( $pairs[0], '=' ) ) );
- $value = substr( $pairs[0], strpos( $pairs[0], '=' ) + 1 );
- $this->name = $name;
- $this->value = urldecode( $value );
-
- // Removes name=value from items.
- array_shift( $pairs );
-
- // Set everything else as a property.
- foreach ( $pairs as $pair ) {
- $pair = rtrim($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, '' );
- $key = strtolower( trim( $key ) );
- if ( 'expires' == $key )
- $val = strtotime( $val );
- $this->$key = $val;
- }
- } else {
- if ( !isset( $data['name'] ) )
- return;
-
- // 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'] );
- else
- $this->expires = null;
- }
- }
-
- /**
- * Confirms that it's OK to send this cookie to the URL checked against.
- *
- * Decision is based on RFC 2109/2965, so look there for details on validity.
- *
- * @access public
- * @since 2.8.0
- *
- * @param string $url URL you intend to send this cookie to
- * @return boolean true if allowed, false otherwise.
- */
- 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.
- $url = parse_url( $url );
- $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.
- $path = isset( $this->path ) ? $this->path : '/';
- $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).
- $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 ( !empty( $port ) && !in_array( $url['port'], explode( ',', $port) ) )
- return false;
-
- // Path - request path must start with path restriction.
- if ( substr( $url['path'], 0, strlen( $path ) ) != $path )
- return false;
-
- return true;
- }
-
- /**
- * Convert cookie name and value back to header string.
- *
- * @access public
- * @since 2.8.0
- *
- * @return string Header encoded cookie name and value.
- */
- public function getHeaderValue() {
- if ( ! isset( $this->name ) || ! isset( $this->value ) )
- return '';
-
- /**
- * 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 );
- }
-
- /**
- * Retrieve cookie header for usage in the rest of the WordPress HTTP API.
- *
- * @access public
- * @since 2.8.0
- *
- * @return string
- */
- public function getFullHeader() {
- return 'Cookie: ' . $this->getHeaderValue();
- }
-}
-
-/**
- * Implementation for deflate and gzip transfer encodings.
- *
- * Includes RFC 1950, RFC 1951, and RFC 1952.
- *
- * @since 2.8.0
- * @package WordPress
- * @subpackage HTTP
- */
-class WP_Http_Encoding {
-
- /**
- * Compress raw string using the deflate format.
- *
- * Supports the RFC 1951 standard.
- *
- * @since 2.8.0
- *
- * @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|false False on failure.
- */
- public static function compress( $raw, $level = 9, $supports = null ) {
- return gzdeflate( $raw, $level );
- }
-
- /**
- * Decompression of deflated string.
- *
- * Will attempt to decompress using the RFC 1950 standard, and if that fails
- * then the RFC 1951 standard deflate will be attempted. Finally, the RFC
- * 1952 standard gzip decode will be attempted. If all fail, then the
- * original compressed string will be returned.
- *
- * @since 2.8.0
- *
- * @param string $compressed String to decompress.
- * @param int $length The optional length of the compressed data.
- * @return string|bool False on failure.
- */
- public static function decompress( $compressed, $length = null ) {
-
- if ( empty($compressed) )
- return $compressed;
-
- if ( false !== ( $decompressed = @gzinflate( $compressed ) ) )
- return $decompressed;
-
- if ( false !== ( $decompressed = self::compatible_gzinflate( $compressed ) ) )
- return $decompressed;
-
- if ( false !== ( $decompressed = @gzuncompress( $compressed ) ) )
- return $decompressed;
-
- if ( function_exists('gzdecode') ) {
- $decompressed = @gzdecode( $compressed );
-
- if ( false !== $decompressed )
- return $decompressed;
- }
-
- return $compressed;
- }
-
- /**
- * Decompression of deflated string while staying compatible with the majority of servers.
- *
- * Certain Servers will return deflated data with headers which PHP's 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
- *
- * @param string $gzData String to decompress.
- * @return string|bool False on failure.
- */
- public static function compatible_gzinflate($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) );
- if ( $flg > 0 ) {
- if ( $flg & 4 ) {
- list($xlen) = unpack('v', substr($gzData, $i, 2) );
- $i = $i + 2 + $xlen;
- }
- if ( $flg & 8 )
- $i = strpos($gzData, "\0", $i) + 1;
- if ( $flg & 16 )
- $i = strpos($gzData, "\0", $i) + 1;
- if ( $flg & 2 )
- $i = $i + 2;
- }
- $decompressed = @gzinflate( substr($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 2.8.0
- *
- * @param string $url
- * @param array $args
- * @return string Types of encoding to accept.
- */
- public static function accept_encoding( $url, $args ) {
- $type = array();
- $compression_enabled = self::is_available();
-
- 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 ( $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 encoding the content used when it was compressed to send in the headers.
- *
- * @since 2.8.0
- *
- * @return string Content-Encoding string to send in the header.
- */
- public static function content_encoding() {
- return 'deflate';
- }
-
- /**
- * Whether the content be decoded based on the headers.
- *
- * @since 2.8.0
- *
- * @param array|string $headers All of the available headers.
- * @return bool
- */
- public static function should_decode($headers) {
- if ( is_array( $headers ) ) {
- if ( array_key_exists('content-encoding', $headers) && ! empty( $headers['content-encoding'] ) )
- return true;
- } elseif ( is_string( $headers ) ) {
- return ( stripos($headers, 'content-encoding:') !== false );
- }
-
- return false;
- }
-
- /**
- * Whether decompression and compression are supported by the PHP version.
- *
- * Each function is tested instead of checking for the zlib extension, to
- * ensure that the functions all exist in the PHP version and aren't
- * disabled.
- *
- * @since 2.8.0
- *
- * @return bool
- */
- public static function is_available() {
- return ( function_exists('gzuncompress') || function_exists('gzdeflate') || function_exists('gzinflate') );
- }
-}