wp/wp-includes/class-wp-http-streams.php
changeset 9 177826044cd9
parent 7 cf61fcea0001
child 16 a86126ab1dd4
--- a/wp/wp-includes/class-wp-http-streams.php	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-includes/class-wp-http-streams.php	Mon Oct 14 18:28:13 2019 +0200
@@ -26,12 +26,16 @@
 	 * @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()) {
+	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()
+			'method'      => 'GET',
+			'timeout'     => 5,
+			'redirection' => 5,
+			'httpversion' => '1.0',
+			'blocking'    => true,
+			'headers'     => array(),
+			'body'        => null,
+			'cookies'     => array(),
 		);
 
 		$r = wp_parse_args( $args, $defaults );
@@ -47,14 +51,14 @@
 		// Construct Cookie: header if any cookies are set.
 		WP_Http::buildCookieHeader( $r );
 
-		$arrURL = parse_url($url);
+		$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;
+				$arrURL['port']   = 443;
 				$secure_transport = true;
 			} else {
 				$arrURL['port'] = 80;
@@ -67,10 +71,11 @@
 		}
 
 		if ( isset( $r['headers']['Host'] ) || isset( $r['headers']['host'] ) ) {
-			if ( isset( $r['headers']['Host'] ) )
+			if ( isset( $r['headers']['Host'] ) ) {
 				$arrURL['host'] = $r['headers']['Host'];
-			else
+			} else {
 				$arrURL['host'] = $r['headers']['host'];
+			}
 			unset( $r['headers']['Host'], $r['headers']['host'] );
 		}
 
@@ -79,48 +84,47 @@
 		 * 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 ) )
+		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'];
+		$is_local   = isset( $r['local'] ) && $r['local'];
 		$ssl_verify = isset( $r['sslverify'] ) && $r['sslverify'];
 		if ( $is_local ) {
 			/**
 			 * Filters whether SSL should be verified for local requests.
 			 *
 			 * @since 2.8.0
+			 * @since 5.1.0 The `$url` parameter was added.
 			 *
-			 * @param bool $ssl_verify Whether to verify the SSL connection. Default true.
+			 * @param bool   $ssl_verify Whether to verify the SSL connection. Default true.
+			 * @param string $url        The request URL.
 			 */
-			$ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify );
+			$ssl_verify = apply_filters( 'https_local_ssl_verify', $ssl_verify, $url );
 		} elseif ( ! $is_local ) {
-			/**
-			 * 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.
-			 */
-			$ssl_verify = apply_filters( 'https_ssl_verify', $ssl_verify );
+			/** This filter is documented in wp-includes/class-http.php */
+			$ssl_verify = apply_filters( 'https_ssl_verify', $ssl_verify, $url );
 		}
 
 		$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,
+		$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;
+		$timeout         = (int) floor( $r['timeout'] );
+		$utimeout        = $timeout == $r['timeout'] ? 0 : 1000000 * $r['timeout'] % 1000000;
 		$connect_timeout = max( $timeout, 1 );
 
 		// Store error number.
@@ -129,52 +133,58 @@
 		// Store error string.
 		$connection_error_str = null;
 
-		if ( !WP_DEBUG ) {
+		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 ( $secure_transport ) {
+				$error_reporting = error_reporting( 0 );
+			}
 
-			if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
+			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
+			} else {
 				$handle = @stream_socket_client( $connect_host . ':' . $arrURL['port'], $connection_error, $connection_error_str, $connect_timeout, STREAM_CLIENT_CONNECT, $context );
+			}
 
-			if ( $secure_transport )
+			if ( $secure_transport ) {
 				error_reporting( $error_reporting );
-
+			}
 		} else {
-			if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
+			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
+			} 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 )
+			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 );
+			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'] ) )
+			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.
+		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'] : '' );
+		} else {
+			$requestPath = $arrURL['path'] . ( isset( $arrURL['query'] ) ? '?' . $arrURL['query'] : '' );
+		}
 
-		$strHeaders = strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
+		$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'] ) ||
+			( 'http' == $arrURL['scheme'] && 80 != $arrURL['port'] ) ||
 			( 'https' == $arrURL['scheme'] && 443 != $arrURL['port'] )
 		);
 
@@ -184,63 +194,80 @@
 			$strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
 		}
 
-		if ( isset($r['user-agent']) )
+		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 )
+		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() )
+		if ( $proxy->use_authentication() ) {
 			$strHeaders .= $proxy->authentication_header() . "\r\n";
+		}
 
 		$strHeaders .= "\r\n";
 
-		if ( ! is_null($r['body']) )
+		if ( ! is_null( $r['body'] ) ) {
 			$strHeaders .= $r['body'];
+		}
 
-		fwrite($handle, $strHeaders);
+		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() );
+			return array(
+				'headers'  => array(),
+				'body'     => '',
+				'response' => array(
+					'code'    => false,
+					'message' => false,
+				),
+				'cookies'  => array(),
+			);
 		}
 
-		$strResponse = '';
-		$bodyStarted = false;
+		$strResponse  = '';
+		$bodyStarted  = false;
 		$keep_reading = true;
-		$block_size = 4096;
-		if ( isset( $r['limit_response_size'] ) )
+		$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 )
+			if ( ! WP_DEBUG ) {
 				$stream_handle = @fopen( $r['filename'], 'w+' );
-			else
+			} else {
 				$stream_handle = fopen( $r['filename'], 'w+' );
+			}
 			if ( ! $stream_handle ) {
-				return new WP_Error( 'http_request_failed', sprintf(
-					/* translators: 1: fopen() 2: file name */
-					__( 'Could not open handle for %1$s to %2$s.' ),
-					'fopen()',
-					$r['filename']
-				) );
+				return new WP_Error(
+					'http_request_failed',
+					sprintf(
+						/* translators: 1: fopen(), 2: file name */
+						__( 'Could not open handle for %1$s to %2$s.' ),
+						'fopen()',
+						$r['filename']
+					)
+				);
 			}
 
 			$bytes_written = 0;
-			while ( ! feof($handle) && $keep_reading ) {
+			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 );
+						$process     = WP_Http::processResponse( $strResponse );
 						$bodyStarted = true;
-						$block = $process['body'];
+						$block       = $process['body'];
 						unset( $strResponse );
 						$process['body'] = '';
 					}
@@ -250,7 +277,7 @@
 
 				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 );
+					$block           = substr( $block, 0, $this_block_size );
 				}
 
 				$bytes_written_to_file = fwrite( $stream_handle, $block );
@@ -263,7 +290,7 @@
 
 				$bytes_written += $bytes_written_to_file;
 
-				$keep_reading = !isset( $r['limit_response_size'] ) || $bytes_written < $r['limit_response_size'];
+				$keep_reading = ! isset( $r['limit_response_size'] ) || $bytes_written < $r['limit_response_size'];
 			}
 
 			fclose( $stream_handle );
@@ -271,13 +298,13 @@
 		} else {
 			$header_length = 0;
 			while ( ! feof( $handle ) && $keep_reading ) {
-				$block = fread( $handle, $block_size );
+				$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;
+					$bodyStarted   = true;
 				}
-				$keep_reading = ( ! $bodyStarted || !isset( $r['limit_response_size'] ) || strlen( $strResponse ) < ( $header_length + $r['limit_response_size'] ) );
+				$keep_reading = ( ! $bodyStarted || ! isset( $r['limit_response_size'] ) || strlen( $strResponse ) < ( $header_length + $r['limit_response_size'] ) );
 			}
 
 			$process = WP_Http::processResponse( $strResponse );
@@ -290,27 +317,31 @@
 		$arrHeaders = WP_Http::processHeaders( $process['headers'], $url );
 
 		$response = array(
-			'headers' => $arrHeaders['headers'],
+			'headers'  => $arrHeaders['headers'],
 			// Not yet processed.
-			'body' => null,
+			'body'     => null,
 			'response' => $arrHeaders['response'],
-			'cookies' => $arrHeaders['cookies'],
-			'filename' => $r['filename']
+			'cookies'  => $arrHeaders['cookies'],
+			'filename' => $r['filename'],
 		);
 
 		// Handle redirects.
-		if ( false !== ( $redirect_response = WP_Http::handle_redirects( $url, $r, $response ) ) )
+		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 ( ! 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']) )
+		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'] )
+		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'];
 
@@ -328,7 +359,6 @@
 	 * 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
@@ -337,12 +367,14 @@
 	public static function verify_ssl_certificate( $stream, $host ) {
 		$context_options = stream_context_get_options( $stream );
 
-		if ( empty( $context_options['ssl']['peer_certificate'] ) )
+		if ( empty( $context_options['ssl']['peer_certificate'] ) ) {
 			return false;
+		}
 
 		$cert = openssl_x509_parse( $context_options['ssl']['peer_certificate'] );
-		if ( ! $cert )
+		if ( ! $cert ) {
 			return false;
+		}
 
 		/*
 		 * If the request is being made to an IP address, we'll validate against IP fields
@@ -355,25 +387,29 @@
 			$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:
+				if ( $host_type == strtolower( trim( $match_type ) ) ) { // IP: or DNS:
 					$certificate_hostnames[] = strtolower( trim( $match_host ) );
+				}
 			}
-		} elseif ( !empty( $cert['subject']['CN'] ) ) {
+		} 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 ) )
+		if ( in_array( strtolower( $host ), $certificate_hostnames ) ) {
 			return true;
+		}
 
 		// IP's can't be wildcards, Stop processing.
-		if ( 'ip' == $host_type )
+		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 )
+		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 );
@@ -384,7 +420,6 @@
 	/**
 	 * Determines whether this class can be used for retrieving a URL.
 	 *
-	 * @static
 	 * @since 2.7.0
 	 * @since 3.7.0 Combined with the fsockopen transport and switched to stream_socket_client().
 	 *
@@ -392,16 +427,19 @@
 	 * @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' ) )
+		if ( ! function_exists( 'stream_socket_client' ) ) {
 			return false;
+		}
 
 		$is_ssl = isset( $args['ssl'] ) && $args['ssl'];
 
 		if ( $is_ssl ) {
-			if ( ! extension_loaded( 'openssl' ) )
+			if ( ! extension_loaded( 'openssl' ) ) {
 				return false;
-			if ( ! function_exists( 'openssl_x509_parse' ) )
+			}
+			if ( ! function_exists( 'openssl_x509_parse' ) ) {
 				return false;
+			}
 		}
 
 		/**