X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/fa11948979fd6a4ea5705dc613b239699a459db3..3d39054f012aefe514b3f5509e32f09fc4feda44:/wp-includes/class-http.php diff --git a/wp-includes/class-http.php b/wp-includes/class-http.php index c75b47e2..c0272ba4 100644 --- a/wp-includes/class-http.php +++ b/wp-includes/class-http.php @@ -1,19 +1,21 @@ 'GET', - 'timeout' => apply_filters( 'http_request_timeout', 5), - 'redirection' => apply_filters( 'http_request_redirection_count', 5), - 'httpversion' => apply_filters( 'http_request_version', '1.0'), + /** + * Filters 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 ), + /** + * Filters 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 ), + /** + * Filters 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' ), + /** + * 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' ) ), + /** + * Filters 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(), @@ -95,139 +216,291 @@ class WP_Http { $defaults['redirection'] = 0; $r = wp_parse_args( $args, $defaults ); + /** + * Filters 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 ); // The transports decrement this, store a copy of the original value for loop purposes. if ( ! isset( $r['_redirection'] ) ) $r['_redirection'] = $r['redirection']; - // Allow plugins to short-circuit the request + /** + * 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: + * + * - 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 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 ); - $url = wp_kses_bad_protocol( $url, array( 'http', 'https', 'ssl' ) ); + } + if ( $url ) { + $url = wp_kses_bad_protocol( $url, array( 'http', 'https', 'ssl' ) ); + } } $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 ) ) + if ( $this->block_request( $url ) ) { return new WP_Error( 'http_request_failed', __( 'User has blocked requests through HTTP.' ) ); - - // Determine if this is a https call and pass that on to the transport functions - // so that we can blacklist the transports that do not support ssl verification - $r['ssl'] = $arrURL['scheme'] == 'https' || $arrURL['scheme'] == 'ssl'; - - // Determine if this request is to OUR install of WordPress - $homeURL = parse_url( get_bloginfo( 'url' ) ); - $r['local'] = $homeURL['host'] == $arrURL['host'] || 'localhost' == $arrURL['host']; - unset( $homeURL ); + } // If 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() . basename( $url ); - - // Force some settings if we are streaming to a file and check for existence and perms of destination directory 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 = WP_Http::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 Requests_Hooks(), + ); + + // Ensure redirects follow browser behaviour. + $options['hooks']->register( 'requests.before_redirect', array( get_class(), 'browser_redirect_compatibility' ) ); - if ( isset( $r['headers']['user-agent'] ) ) { - $r['user-agent'] = $r['headers']['user-agent']; - unset( $r['headers']['user-agent'] ); + if ( $r['stream'] ) { + $options['filename'] = $r['filename']; + } + if ( empty( $r['redirection'] ) ) { + $options['follow_redirects'] = false; + } else { + $options['redirects'] = $r['redirection']; } - if ( '1.1' == $r['httpversion'] && !isset( $r['headers']['connection'] ) ) { - $r['headers']['connection'] = 'close'; + // Use byte limit, if we can + if ( isset( $r['limit_response_size'] ) ) { + $options['max_bytes'] = $r['limit_response_size']; } - // Construct Cookie: header if any cookies are set - WP_Http::buildCookieHeader( $r ); + // If we've got cookies, use and convert them to Requests_Cookie. + if ( ! empty( $r['cookies'] ) ) { + $options['cookies'] = WP_Http::normalize_cookies( $r['cookies'] ); + } - // Avoid issues where mbstring.func_overload is enabled - mbstring_binary_safe_encoding(); + // SSL certificate handling + if ( ! $r['sslverify'] ) { + $options['verify'] = false; + } else { + $options['verify'] = $r['sslcertificates']; + } - if ( ! isset( $r['headers']['Accept-Encoding'] ) ) { - if ( $encoding = WP_Http_Encoding::accept_encoding( $url, $r ) ) - $r['headers']['Accept-Encoding'] = $encoding; + // All non-GET/HEAD requests should put the arguments in the form body. + if ( 'HEAD' !== $type && 'GET' !== $type ) { + $options['data_format'] = 'body'; } - 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, '&' ); + /** + * 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 ( ! isset( $r['headers']['Content-Type'] ) ) - $r['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ); + if ( $proxy->use_authentication() ) { + $options['proxy']->use_authentication = true; + $options['proxy']->user = $proxy->username(); + $options['proxy']->pass = $proxy->password(); } + } - if ( '' === $r['body'] ) - $r['body'] = null; + // Work around a bug in Requests when the path starts with // See https://github.com/rmccue/Requests/issues/231 + $url = preg_replace( '!^(\w+://[^/]+)//(.*)$!i', '$1/$2', $url ); - if ( ! isset( $r['headers']['Content-Length'] ) && ! isset( $r['headers']['content-length'] ) ) - $r['headers']['Content-Length'] = strlen( $r['body'] ); - } + try { + $requests_response = Requests::request( $url, $headers, $data, $type, $options ); - $response = $this->_dispatch_request( $url, $r ); + // Convert the response into an array + $http_response = new WP_HTTP_Requests_Response( $requests_response, $r['filename'] ); + $response = $http_response->to_array(); - reset_mbstring_encoding(); + // Add the original object to the array. + $response['http_response'] = $http_response; + } + catch ( Requests_Exception $e ) { + $response = new WP_Error( 'http_request_failed', $e->getMessage() ); + } - 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 $args 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; + } - // 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; - } + if ( ! $r['blocking'] ) { + return array( + 'headers' => array(), + 'body' => '', + 'response' => array( + 'code' => false, + 'message' => false, + ), + 'cookies' => array(), + 'http_response' => null, + ); + } + + /** + * 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 + * @access public + * @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 + * @access public + * @static + * + * @param string $location URL to redirect to. + * @param array $headers Headers for the redirect. + * @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; + } } /** * Tests which transports are capable of supporting the request. * * @since 3.2.0 - * @access private + * @access public * * @param array $args Request arguments * @param string $url URL to Request * - * @return string|bool Class name for the first transport that claims to support the request. False if no transport claims to support the 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 ) { - $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 + $transports = array( 'curl', 'streams' ); + + /** + * Filters which HTTP transports are available and in what order. + * + * @since 3.7.0 + * + * @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', $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 + // Check to see if this transport is a possibility, calls the transport statically. if ( !call_user_func( array( $class, 'test' ), $args, $url ) ) continue; @@ -246,11 +519,13 @@ class WP_Http { * 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|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error + * @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(); @@ -265,11 +540,21 @@ class WP_Http { $response = $transports[$class]->request( $url, $args ); + /** 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; + /** + * Filters 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 ); } @@ -281,11 +566,11 @@ class WP_Http { * @access public * @since 2.7.0 * - * @param string $url URI resource. - * @param str|array $args Optional. Override the defaults. - * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error + * @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); @@ -299,11 +584,11 @@ class WP_Http { * @access public * @since 2.7.0 * - * @param string $url URI resource. - * @param str|array $args Optional. Override the defaults. - * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error + * @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); @@ -317,11 +602,11 @@ class WP_Http { * @access public * @since 2.7.0 * - * @param string $url URI resource. - * @param str|array $args Optional. Override the defaults. - * @return array|object Array containing 'headers', 'body', 'response', 'cookies', 'filename'. A WP_Error instance upon error + * @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); @@ -359,20 +644,25 @@ class WP_Http { * Then a numbered array is returned as the value of that header-key. */ public static function processHeaders( $headers, $url = '' ) { - // split headers, one per array element + // Split headers, one per array element. if ( is_string($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); @@ -409,6 +699,9 @@ class WP_Http { $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' => $cookies); } @@ -427,10 +720,10 @@ class WP_Http { */ public static function buildCookieHeader( &$r ) { if ( ! empty($r['cookies']) ) { - // Upgrade any name => value cookie pairs to WP_HTTP_Cookie instances + // 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 = ''; @@ -448,7 +741,7 @@ class WP_Http { * * 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 @@ -463,7 +756,9 @@ class WP_Http { return $body; $parsed_body = ''; - $body_original = $body; // We'll be altering $body, so need a backup in case of error + + // We'll be altering $body, so need a backup in case of error. + $body_original = $body; while ( true ) { $has_chunk = (bool) preg_match( '/^([0-9a-f]+)[^\r\n]*\r\n/i', $body, $match ); @@ -473,13 +768,13 @@ class WP_Http { $length = hexdec( $match[1] ); $chunk_length = strlen( $match[0] ); - // Parse out the chunk of data + // Parse out the chunk of data. $parsed_body .= substr( $body, $chunk_length, $length ); - // Remove the chunk from the raw data + // Remove the chunk from the raw data. $body = substr( $body, $length + $chunk_length ); - // End of document + // End of the document. if ( '0' === trim( $body ) ) return $parsed_body; } @@ -492,19 +787,22 @@ class WP_Http { * 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. * * @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; @@ -515,16 +813,25 @@ class WP_Http { $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'] ) ) { + /** + * Filters 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, '*') ) { @@ -542,49 +849,91 @@ class WP_Http { } - static function make_absolute_url( $maybe_relative_path, $url ) { + /** + * Used as a wrapper for PHP's parse_url() function that handles edgecases in < PHP 5.4.7. + * + * @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 ) { + _deprecated_function( __METHOD__, '4.4.0', 'wp_parse_url()' ); + return wp_parse_url( $url ); + } + + /** + * 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; - // Check for a scheme - if ( false !== strpos( $maybe_relative_path, '://' ) ) + if ( ! $url_parts = wp_parse_url( $url ) ) { return $maybe_relative_path; + } - if ( ! $url_parts = @parse_url( $url ) ) + if ( ! $relative_url_parts = wp_parse_url( $maybe_relative_path ) ) { return $maybe_relative_path; + } - if ( ! $relative_url_parts = @parse_url( $maybe_relative_path ) ) + // Check for a scheme on the 'relative' url + if ( ! empty( $relative_url_parts['scheme'] ) ) { return $maybe_relative_path; + } - $absolute_path = $url_parts['scheme'] . '://' . $url_parts['host']; - if ( isset( $url_parts['port'] ) ) - $absolute_path .= ':' . $url_parts['port']; + $absolute_path = $url_parts['scheme'] . '://'; + + // 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']; + } - // Start off with the Absolute URL path + // Start off with the Absolute URL path. $path = ! empty( $url_parts['path'] ) ? $url_parts['path'] : '/'; - // If it's a root-relative path, then great + // 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']; - // Else it's a relative path + // Else it's a relative path. } elseif ( ! empty( $relative_url_parts['path'] ) ) { - // Strip off any file components from the absolute path + // Strip off any file components from the absolute path. $path = substr( $path, 0, strrpos( $path, '/' ) + 1 ); - // Build the new path + // Build the new path. $path .= $relative_url_parts['path']; - // Strip all /path/../ out of the path + // Strip all /path/../ out of the path. while ( strpos( $path, '../' ) > 1 ) { $path = preg_replace( '![^/]+/\.\./!', '', $path ); } - // Strip any final leading ../ from the path + // Strip any final leading ../ from the path. $path = preg_replace( '!^/(\.\./)+!', '', $path ); } - // Add the Query string + // Add the Query string. if ( ! empty( $relative_url_parts['query'] ) ) $path .= '?' . $relative_url_parts['query']; @@ -596,39 +945,41 @@ class WP_Http { * * @since 3.7.0 * + * @static + * * @param string $url The URL which was requested. - * @param array $args The Arguements which were used to make the request. + * @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. */ - static function handle_redirects( $url, $args, $response ) { + 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; - // Only perform redirections on redirection http codes + // Only perform redirections on redirection http codes. if ( $response['response']['code'] > 399 || $response['response']['code'] < 300 ) return false; - // Don't redirect if we've run out of redirects + // Don't redirect if we've run out of redirects. if ( $args['redirection']-- <= 0 ) return new WP_Error( 'http_request_failed', __('Too many redirects.') ); $redirect_location = $response['headers']['location']; - // If there were multiple Location headers, use the last header specified + // If there were multiple Location headers, use the last header specified. 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 + // 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'; } - // Include valid cookies in the redirect process + // Include valid cookies in the redirect process. if ( ! empty( $response['cookies'] ) ) { foreach ( $response['cookies'] as $cookie ) { if ( $cookie->test( $redirect_location ) ) @@ -647,7 +998,7 @@ class WP_Http { * 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 @@ -655,7 +1006,7 @@ class WP_Http { * @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 */ - static function is_ip_address( $maybe_ip ) { + 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; @@ -666,1289 +1017,3 @@ class WP_Http { } } - -/** - * 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_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 URI resource. - * @param string|array $args Optional. Override the defaults. - * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys. - */ - function request($url, $args = array()) { - $defaults = array( - 'method' => 'GET', 'timeout' => 5, - 'redirection' => 5, 'httpversion' => '1.0', - 'blocking' => true, - 'headers' => array(), 'body' => null, 'cookies' => array() - ); - - $r = wp_parse_args( $args, $defaults ); - - if ( isset($r['headers']['User-Agent']) ) { - $r['user-agent'] = $r['headers']['User-Agent']; - unset($r['headers']['User-Agent']); - } else if ( isset($r['headers']['user-agent']) ) { - $r['user-agent'] = $r['headers']['user-agent']; - unset($r['headers']['user-agent']); - } - - // Construct Cookie: header if any cookies are set - WP_Http::buildCookieHeader( $r ); - - $arrURL = parse_url($url); - - $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; - } - } - - 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 ) - $ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify ); - elseif ( ! $is_local ) - $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 ); - - $connection_error = null; // Store error number - $connection_error_str = null; // Store error string - - 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']) ? '?' . $arrURL['query'] : '' ); - - if ( empty($requestPath) ) - $requestPath .= '/'; - - $strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n"; - - if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) - $strHeaders .= 'Host: ' . $arrURL['host'] . ':' . $arrURL['port'] . "\r\n"; - else - $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n"; - - if ( isset($r['user-agent']) ) - $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n"; - - if ( is_array($r['headers']) ) { - foreach ( (array) $r['headers'] as $header => $headerValue ) - $strHeaders .= $header . ': ' . $headerValue . "\r\n"; - } else { - $strHeaders .= $r['headers']; - } - - if ( $proxy->use_authentication() ) - $strHeaders .= $proxy->authentication_header() . "\r\n"; - - $strHeaders .= "\r\n"; - - if ( ! is_null($r['body']) ) - $strHeaders .= $r['body']; - - fwrite($handle, $strHeaders); - - if ( ! $r['blocking'] ) { - 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'] ) - $block = substr( $block, 0, ( $r['limit_response_size'] - $bytes_written ) ); - - $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'], - 'body' => null, // Not yet processed - '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 - */ - 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 an 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; - } - - 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 - * - * @package WordPress - * @subpackage HTTP - * - * @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 recieve 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; - - /** - * Send a HTTP request to a URI using cURL extension. - * - * @access public - * @since 2.7.0 - * - * @param string $url - * @param str|array $args Optional. Override the defaults. - * @return array 'headers', 'body', 'response', 'cookies' and 'filename' keys. - */ - function request($url, $args = array()) { - $defaults = array( - 'method' => 'GET', 'timeout' => 5, - 'redirection' => 5, 'httpversion' => '1.0', - 'blocking' => true, - 'headers' => array(), 'body' => null, 'cookies' => array() - ); - - $r = wp_parse_args( $args, $defaults ); - - if ( isset($r['headers']['User-Agent']) ) { - $r['user-agent'] = $r['headers']['User-Agent']; - unset($r['headers']['User-Agent']); - } else if ( isset($r['headers']['user-agent']) ) { - $r['user-agent'] = $r['headers']['user-agent']; - unset($r['headers']['user-agent']); - } - - // Construct Cookie: header if any cookies are set. - WP_Http::buildCookieHeader( $r ); - - $handle = curl_init(); - - // cURL offers really easy proxy support. - $proxy = new WP_HTTP_Proxy(); - - if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) { - - 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 ) - $ssl_verify = apply_filters('https_local_ssl_verify', $ssl_verify); - elseif ( ! $is_local ) - $ssl_verify = apply_filters('https_ssl_verify', $ssl_verify); - - // CURLOPT_TIMEOUT and CURLOPT_CONNECTTIMEOUT expect integers. Have to use ceil since - // a value of 0 will allow an 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( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 ); - - // Cookies are not handled by the HTTP API currently. Allow for plugin authors to handle it - // themselves... Although, it is somewhat pointless without some reference. - do_action_ref_array( 'http_api_curl', array(&$handle) ); - - // We don't need to return the body, so don't. Just execute request and return. - if ( ! $r['blocking'] ) { - curl_exec( $handle ); - - 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 ); - $theHeaders = WP_Http::processHeaders( $this->headers, $url ); - $theBody = $this->body; - - $this->headers = ''; - $this->body = ''; - - $curl_error = curl_errno( $handle ); - - // If an error occured, or, no response - if ( $curl_error || ( 0 == strlen( $theBody ) && empty( $theHeaders['headers'] ) ) ) { - if ( CURLE_WRITE_ERROR /* 23 */ == $curl_error && $r['stream'] ) { - fclose( $this->stream_handle ); - return new WP_Error( 'http_request_failed', __( 'Failed to write request to temporary file.' ) ); - } - 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.' ) ); - } - } - - $response = array(); - $response['code'] = curl_getinfo( $handle, CURLINFO_HTTP_CODE ); - $response['message'] = get_status_header_desc($response['code']); - - curl_close( $handle ); - - if ( $r['stream'] ) - fclose( $this->stream_handle ); - - $response = array( - 'headers' => $theHeaders['headers'], - 'body' => null, - 'response' => $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 as "completed" - * - * @since 3.6.0 - * @access private - * @return int - */ - private function stream_body( $handle, $data ) { - $data_length = strlen( $data ); - - if ( $this->max_body_length && ( strlen( $this->body ) + $data_length ) > $this->max_body_length ) - $data = substr( $data, 0, ( $this->max_body_length - $data_length ) ); - - if ( $this->stream_handle ) { - $bytes_written = fwrite( $this->stream_handle, $data ); - } else { - $this->body .= $data; - $bytes_written = $data_length; - } - - // 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(); - if ( ! (CURL_VERSION_SSL & $curl_version['features']) ) // Does this cURL version support SSL requests? - return false; - } - - 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: - *
    - *
  1. WP_PROXY_HOST - Enable proxy support and host for connecting.
    2. - *
  2. WP_PROXY_PORT - Proxy port for connection. No default, must be defined.
    3. - *
  3. WP_PROXY_USERNAME - Proxy username, if it requires authentication.
    4. - *
  4. WP_PROXY_PASSWORD - Proxy password, if it requires authentication.
    5. - *
  5. 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
    6. - *
- * - * 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 - */ -class WP_HTTP_Proxy { - - /** - * Whether proxy connection should be used. - * - * @since 2.8 - * @use WP_PROXY_HOST - * @use WP_PROXY_PORT - * - * @return bool - */ - function is_enabled() { - return defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT'); - } - - /** - * Whether authentication should be used. - * - * @since 2.8 - * @use WP_PROXY_USERNAME - * @use WP_PROXY_PASSWORD - * - * @return bool - */ - function use_authentication() { - return defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD'); - } - - /** - * Retrieve the host for the proxy server. - * - * @since 2.8 - * - * @return string - */ - function host() { - if ( defined('WP_PROXY_HOST') ) - return WP_PROXY_HOST; - - return ''; - } - - /** - * Retrieve the port for the proxy server. - * - * @since 2.8 - * - * @return string - */ - function port() { - if ( defined('WP_PROXY_PORT') ) - return WP_PROXY_PORT; - - return ''; - } - - /** - * Retrieve the username for proxy authentication. - * - * @since 2.8 - * - * @return string - */ - function username() { - if ( defined('WP_PROXY_USERNAME') ) - return WP_PROXY_USERNAME; - - return ''; - } - - /** - * Retrieve the password for proxy authentication. - * - * @since 2.8 - * - * @return string - */ - function password() { - if ( defined('WP_PROXY_PASSWORD') ) - return WP_PROXY_PASSWORD; - - return ''; - } - - /** - * Retrieve authentication string for proxy authentication. - * - * @since 2.8 - * - * @return string - */ - function authentication() { - return $this->username() . ':' . $this->password(); - } - - /** - * Retrieve header string for proxy authentication. - * - * @since 2.8 - * - * @return string - */ - function authentication_header() { - return 'Proxy-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. - * - * @uses WP_PROXY_BYPASS_HOSTS - * @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. - */ - 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') ); - - $result = apply_filters( 'pre_http_send_through_proxy', null, $uri, $check, $home ); - if ( ! is_null( $result ) ) - return $result; - - if ( $check['host'] == 'localhost' || $check['host'] == $home['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 - */ - var $name; - - /** - * Cookie value. - * - * @since 2.8.0 - * @var string - */ - var $value; - - /** - * When the cookie expires. - * - * @since 2.8.0 - * @var string - */ - var $expires; - - /** - * Cookie URL path. - * - * @since 2.8.0 - * @var string - */ - var $path; - - /** - * Cookie Domain. - * - * @since 2.8.0 - * @var string - */ - var $domain; - - /** - * Sets up this cookie object. - * - * The parameter $data should be either an associative array containing the indices names below - * or a header string detailing it. - * - * If it's an array, it should include the following elements: - *
    - *
  1. Name
    2. - *
  2. Value - should NOT be urlencoded already.
    3. - *
  3. Expires - (optional) String or int (UNIX timestamp).
    4. - *
  4. Path (optional)
    5. - *
  5. Domain (optional)
    6. - *
  6. Port (optional)
    7. - *
- * - * @access public - * @since 2.8.0 - * - * @param string|array $data Raw cookie data. - * @param string $requested_url The URL which the cookie was set on, used for default 'domain' and 'port' values - */ - 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 ); - array_shift( $pairs ); //Removes name=value from items. - - // 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 - 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 false; - - // 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. - */ - 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. - */ - function getHeaderValue() { - if ( ! isset( $this->name ) || ! isset( $this->value ) ) - return ''; - - 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 - */ - function getFullHeader() { - return 'Cookie: ' . $this->getHeaderValue(); - } -} - -/** - * Implementation for deflate and gzip transfer encodings. - * - * Includes RFC 1950, RFC 1951, and RFC 1952. - * - * @since 2.8 - * @package WordPress - * @subpackage HTTP - */ -class WP_Http_Encoding { - - /** - * Compress raw string using the deflate format. - * - * Supports the RFC 1951 standard. - * - * @since 2.8 - * - * @param string $raw String to compress. - * @param int $level Optional, default is 9. Compression level, 9 is highest. - * @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports. - * @return string|bool False on failure. - */ - 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 - * - * @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 = WP_Http_Encoding::compatible_gzinflate( $compressed ) ) ) - return $decompressed; - - if ( false !== ( $decompressed = @gzuncompress( $compressed ) ) ) - return $decompressed; - - if ( function_exists('gzdecode') ) { - $decompressed = @gzdecode( $compressed ); - - if ( false !== $decompressed ) - return $decompressed; - } - - return $compressed; - } - - /** - * Decompression of deflated string while staying compatible with the majority of servers. - * - * Certain Servers will return deflated data with headers which PHP's 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: - * http://core.trac.wordpress.org/ticket/18273 - * - * @since 2.8.1 - * @link http://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 - * - * @return string Types of encoding to accept. - */ - public static function accept_encoding( $url, $args ) { - $type = array(); - $compression_enabled = WP_Http_Encoding::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'; - } - - $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 - * - * @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 - * - * @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; - } else if ( is_string( $headers ) ) { - return ( stripos($headers, 'content-encoding:') !== false ); - } - - return false; - } - - /** - * Whether decompression and compression are supported by the PHP version. - * - * Each function is tested instead of checking for the zlib extension, to - * ensure that the functions all exist in the PHP version and aren't - * disabled. - * - * @since 2.8 - * - * @return bool - */ - public static function is_available() { - return ( function_exists('gzuncompress') || function_exists('gzdeflate') || function_exists('gzinflate') ); - } -}