+global\WPCOM_JSON_API::serve()

Complexity

Conditions	38
Paths	9832

Size

Total Lines	200
Code Lines	107

Duplication

Lines	8
Ratio	4 %

<?php
	function serve( $exit = true ) {
		ini_set( 'display_errors', false );

		$this->exit = (bool) $exit;

		// This was causing problems with Jetpack, but is necessary for wpcom
		// @see https://github.com/Automattic/jetpack/pull/2603
		// @see r124548-wpcom
		if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
			add_filter( 'home_url', array( $this, 'ensure_http_scheme_of_home_url' ), 10, 3 );
		}

		add_filter( 'user_can_richedit', '__return_true' );

		add_filter( 'comment_edit_pre', array( $this, 'comment_edit_pre' ) );

		$initialization = $this->initialize();

Are you sure the assignment to $initialization is correct as $this->initialize() (which targets WPCOM_JSON_API::initialize()) seems to always return null.

		if ( 'OPTIONS' == $this->method ) {
			/**
			 * Fires before the page output.
			 * Can be used to specify custom header options.
			 *
			 * @module json-api
			 *
			 * @since 3.1.0
			 */
			do_action( 'wpcom_json_api_options' );
			return $this->output( 200, '', 'plain/text' );
		}

		if ( is_wp_error( $initialization ) ) {
			$this->output_error( $initialization );
			return;
		}

		// Normalize path and extract API version
		$this->path = untrailingslashit( $this->path );
		preg_match( '#^/rest/v(\d+(\.\d+)*)#', $this->path, $matches );

		// HACK Alert!
		// In order to workaround a bug in the iOS 5.6 release we need to handle /rest/sites/new as if it was
		// /rest/v1.1/sites/new
		if ( $this->path === '/rest/sites/new' ) {
			$this->version = '1.1';
			$this->path = '/sites/new';
		} else if ( $this->path === '/rest/users/new' ) {
			$this->version = '1.1';
			$this->path = '/users/new';
		} else {
			$this->path = substr( $this->path, strlen( $matches[0] ) );
			$this->version = $matches[1];
		}

		$allowed_methods = array( 'GET', 'POST' );
		$four_oh_five = false;

		$is_help = preg_match( '#/help/?$#i', $this->path );
		$matching_endpoints = array();

		if ( $is_help ) {
			$origin = get_http_origin();

			if ( !empty( $origin ) && 'GET' == $this->method ) {
				header( 'Access-Control-Allow-Origin: ' . esc_url_raw( $origin ) );
			}

			$this->path = substr( rtrim( $this->path, '/' ), 0, -5 );
			// Show help for all matching endpoints regardless of method
			$methods = $allowed_methods;
			$find_all_matching_endpoints = true;
			// How deep to truncate each endpoint's path to see if it matches this help request
			$depth = substr_count( $this->path, '/' ) + 1;
			if ( false !== stripos( $this->accept, 'javascript' ) || false !== stripos( $this->accept, 'json' ) ) {
				$help_content_type = 'json';
			} else {
				$help_content_type = 'html';
			}
		} else {
			if ( in_array( $this->method, $allowed_methods ) ) {
				// Only serve requested method
				$methods = array( $this->method );
				$find_all_matching_endpoints = false;
			} else {
				// We don't allow this requested method - find matching endpoints and send 405
				$methods = $allowed_methods;
				$find_all_matching_endpoints = true;
				$four_oh_five = true;
			}
		}

		// Find which endpoint to serve
		$found = false;
		foreach ( $this->endpoints as $endpoint_path_versions => $endpoints_by_method ) {
			$endpoint_path_versions = unserialize( $endpoint_path_versions );
			$endpoint_path        = $endpoint_path_versions[0];
			$endpoint_min_version = $endpoint_path_versions[1];
			$endpoint_max_version = $endpoint_path_versions[2];

			// Make sure max_version is not less than min_version
			if ( version_compare( $endpoint_max_version, $endpoint_min_version, '<' ) ) {
				$endpoint_max_version = $endpoint_min_version;
			}

			foreach ( $methods as $method ) {
				if ( !isset( $endpoints_by_method[$method] ) ) {
					continue;
				}

				// Normalize
				$endpoint_path = untrailingslashit( $endpoint_path );
				if ( $is_help ) {
					// Truncate path at help depth
					$endpoint_path = join( '/', array_slice( explode( '/', $endpoint_path ), 0, $depth ) );

The variable $depth does not seem to be defined for all execution paths leading up to this point.

				}

				// Generate regular expression from sprintf()
				$endpoint_path_regex = str_replace( array( '%s', '%d' ), array( '([^/?&]+)', '(\d+)' ), $endpoint_path );

				if ( !preg_match( "#^$endpoint_path_regex\$#", $this->path, $path_pieces ) ) {
					// This endpoint does not match the requested path.
					continue;
				}

				if ( version_compare( $this->version, $endpoint_min_version, '<' ) || version_compare( $this->version, $endpoint_max_version, '>' ) ) {
					// This endpoint does not match the requested version.
					continue;
				}

				$found = true;

				if ( $find_all_matching_endpoints ) {
					$matching_endpoints[] = array( $endpoints_by_method[$method], $path_pieces );
				} else {
					// The method parameters are now in $path_pieces
					$endpoint = $endpoints_by_method[$method];
					break 2;
				}
			}
		}

		if ( !$found ) {
			return $this->output( 404, '', 'text/plain' );
		}

		if ( $four_oh_five ) {
			$allowed_methods = array();
			foreach ( $matching_endpoints as $matching_endpoint ) {
				$allowed_methods[] = $matching_endpoint[0]->method;
			}

			header( 'Allow: ' . strtoupper( join( ',', array_unique( $allowed_methods ) ) ) );
			return $this->output( 405, array( 'error' => 'not_allowed', 'error_message' => 'Method not allowed' ) );
		}

		if ( $is_help ) {
			/**
			 * Fires before the API output.
			 *
			 * @since 1.9.0
			 *
			 * @param string help.
			 */
			do_action( 'wpcom_json_api_output', 'help' );
			if ( 'json' === $help_content_type ) {

The variable $help_content_type does not seem to be defined for all execution paths leading up to this point.

				$docs = array();
				foreach ( $matching_endpoints as $matching_endpoint ) {
					if ( $matching_endpoint[0]->is_publicly_documentable() || WPCOM_JSON_API__DEBUG )
						$docs[] = call_user_func( array( $matching_endpoint[0], 'generate_documentation' ) );
				}
				return $this->output( 200, $docs );
			} else {
				status_header( 200 );
				foreach ( $matching_endpoints as $matching_endpoint ) {
					if ( $matching_endpoint[0]->is_publicly_documentable() || WPCOM_JSON_API__DEBUG )
						call_user_func( array( $matching_endpoint[0], 'document' ) );
				}
			}
			exit;

The method serve() contains an exit expression.

		}

		if ( $endpoint->in_testing && !WPCOM_JSON_API__DEBUG ) {

The variable $endpoint does not seem to be defined for all execution paths leading up to this point.

			return $this->output( 404, '', 'text/plain' );
		}

		/** This action is documented in class.json-api.php */
		do_action( 'wpcom_json_api_output', $endpoint->stat );

		$response = $this->process_request( $endpoint, $path_pieces );

The variable $path_pieces does not seem to be defined for all execution paths leading up to this point.

		if ( !$response && !is_array( $response ) ) {
			return $this->output( 500, '', 'text/plain' );
		} elseif ( is_wp_error( $response ) ) {
			return $this->output_error( $response );
		}

		$output_status_code = $this->output_status_code;
		$this->set_output_status_code();

		return $this->output( $output_status_code, $response );
	}