-
-/**
- * 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 bool 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 bool 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
- *
- * @staticvar array|null $bypass_hosts
- * @staticvar array $wildcard_regex
- *
- * @param string $uri URI to check.
- * @return bool True, to send through the proxy and false if, the proxy should not be used.
- */
- 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 = null;
- static $wildcard_regex = array();
- if ( null === $bypass_hosts ) {
- $bypass_hosts = preg_split('|,\s*|', WP_PROXY_BYPASS_HOSTS);
-
- if ( false !== strpos(WP_PROXY_BYPASS_HOSTS, '*') ) {
- $wildcard_regex = array();
- foreach ( $bypass_hosts as $host )
- $wildcard_regex[] = str_replace( '\*', '.+', 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 bool 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
- *
- * @static
- *
- * @param string $raw String to compress.
- * @param int $level Optional, default is 9. Compression level, 9 is highest.
- * @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports.
- * @return string|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
- *
- * @static
- *
- * @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
- *
- * @static
- *
- * @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
- *
- * @static
- *
- * @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
- *
- * @static
- *
- * @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
- *
- * @static
- *
- * @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
- *
- * @static
- *
- * @return bool
- */
- public static function is_available() {
- return ( function_exists('gzuncompress') || function_exists('gzdeflate') || function_exists('gzinflate') );
- }
-}