253 lines
8.4 KiB
PHP
253 lines
8.4 KiB
PHP
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<?php
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// Exit if accessed directly.
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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// If class is already defined, return.
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if ( class_exists( 'ACF_Rest_Request' ) ) {
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return;
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}
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/**
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* Class ACF_Rest_Request
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*
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* @property-read string $object_sub_type
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* @property-read string $object_type
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* @property-read string $http_method
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*/
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class ACF_Rest_Request {
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/**
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* Define which private/protected class properties are allowed read access. Access to these is controlled in
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* \ACF_Rest_Request::__get();
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*
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* @var string[]
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*/
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private $readonly_props = array( 'object_type', 'object_sub_type', 'child_object_type', 'http_method' );
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/** @var string The HTTP request method for the current request. i.e; GET, POST, PATCH, PUT, DELETE, OPTIONS, HEAD */
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private $http_method;
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/** @var string The current route being requested. */
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private $current_route;
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/** @var array Route URL patterns we support. */
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private $supported_routes = array();
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/** @var array Parameters matched from the URL. e.g; object IDs. */
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private $url_params = array();
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/** @var string The underlying object type. e.g; post, term, user, etc. */
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private $object_type;
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/** @var string The requested object type. */
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private $object_sub_type;
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/** @var string The object type for a child object. e.g. post-revision, autosaves, etc. */
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private $child_object_type;
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/**
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* Determine all required information from the current request.
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*/
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public function parse_request( $request ) {
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$this->set_http_method();
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$this->set_current_route( $request );
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$this->build_supported_routes();
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$this->set_url_params();
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$this->set_object_types();
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}
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/**
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* Magic getter for accessing read-only properties. Should we ever need to enforce a getter method, we can do so here.
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*
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* @param string $name The desired property name.
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* @return string|null
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*/
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public function __get( $name ) {
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if ( in_array( $name, $this->readonly_props ) ) {
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return $this->$name;
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}
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return null;
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}
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/**
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* Get a URL parameter if found on the request URL.
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*
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* @param $param
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* @return mixed|null
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*/
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public function get_url_param( $param ) {
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return isset( $this->url_params[ $param ] ) ? $this->url_params[ $param ] : null;
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}
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/**
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* Determine the HTTP method of the current request.
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*/
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private function set_http_method() {
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$this->http_method = 'GET';
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if ( ! empty( $_SERVER['REQUEST_METHOD'] ) ) {
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$this->http_method = strtoupper( sanitize_text_field( $_SERVER['REQUEST_METHOD'] ) );
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}
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// phpcs:disable WordPress.Security.NonceVerification.Recommended -- Verified elsewhere.
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// HTTP method override for clients that can't use PUT/PATCH/DELETE. This is identical to WordPress'
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// handling in \WP_REST_Server::serve_request(). This block of code should always be identical to that
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// in core.
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if ( isset( $_GET['_method'] ) ) {
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$this->http_method = strtoupper( sanitize_text_field( $_GET['_method'] ) );
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} elseif ( isset( $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'] ) ) {
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$this->http_method = strtoupper( sanitize_text_field( $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'] ) );
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}
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// phpcs:enable WordPress.Security.NonceVerification.Recommended
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}
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/**
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* Get the current REST route as determined by WordPress.
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*/
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private function set_current_route( $request ) {
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if ( $request ) {
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$this->current_route = $request->get_route();
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} else {
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$this->current_route = empty( $GLOBALS['wp']->query_vars['rest_route'] ) ? null : $GLOBALS['wp']->query_vars['rest_route'];
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}
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}
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/**
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* Build an array of route match patterns that we handle. These are the same as WordPress' core patterns except
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* we are also matching the object type here as well.
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*/
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private function build_supported_routes() {
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// Add post type routes for all post types configured to show in REST.
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/** @var WP_Post_Type $post_type */
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foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {
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$rest_base = acf_get_object_type_rest_base( $post_type );
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$this->supported_routes[] = "/wp/v2/(?P<rest_base>{$rest_base})";
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$this->supported_routes[] = "/wp/v2/(?P<rest_base>{$rest_base})/(?P<id>[\d]+)";
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if ( post_type_supports( $post_type->name, 'revisions' ) ) {
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$this->supported_routes[] = "/wp/v2/(?P<rest_base>{$rest_base})/(?P<id>[\d]+)/(?P<child_rest_base>revisions)";
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$this->supported_routes[] = "/wp/v2/(?P<rest_base>{$rest_base})/(?P<id>[\d]+)/(?P<child_rest_base>revisions)/(?P<child_id>[\d]+)";
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}
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if ( 'attachment' !== $post_type->name ) {
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$this->supported_routes[] = "/wp/v2/(?P<rest_base>{$rest_base})/(?P<id>[\d]+)/(?P<child_rest_base>autosaves)";
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$this->supported_routes[] = "/wp/v2/(?P<rest_base>{$rest_base})/(?P<id>[\d]+)/(?P<child_rest_base>autosaves)/(?P<child_id>[\d]+)";
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}
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}
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// Add taxonomy routes all taxonomies configured to show in REST.
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/** @var WP_Taxonomy $taxonomy */
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foreach ( get_taxonomies( array( 'show_in_rest' => true ), 'object' ) as $taxonomy ) {
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$rest_base = acf_get_object_type_rest_base( $taxonomy );
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$this->supported_routes[] = "/wp/v2/(?P<rest_base>{$rest_base})";
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$this->supported_routes[] = "/wp/v2/(?P<rest_base>{$rest_base})/(?P<id>[\d]+)";
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}
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// Add user routes.
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$this->supported_routes[] = '/wp/v2/(?P<rest_base>users)';
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$this->supported_routes[] = '/wp/v2/(?P<rest_base>users)/(?P<id>[\d]+)';
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$this->supported_routes[] = '/wp/v2/(?P<rest_base>users)/me';
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// Add comment routes.
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$this->supported_routes[] = '/wp/v2/(?P<rest_base>comments)';
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$this->supported_routes[] = '/wp/v2/(?P<rest_base>comments)/(?P<id>[\d]+)';
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}
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/**
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* Loop through supported routes to find matching pattern. Use matching pattern to determine any URL parameters.
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*/
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private function set_url_params() {
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if ( ! $this->supported_routes || ! is_string( $this->current_route ) ) {
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return;
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}
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// Determine query args passed within the URL.
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foreach ( $this->supported_routes as $route ) {
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$match = preg_match( '@^' . $route . '$@i', $this->current_route, $matches );
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if ( ! $match ) {
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continue;
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}
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foreach ( $matches as $param => $value ) {
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if ( ! is_int( $param ) ) {
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$this->url_params[ $param ] = $value;
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}
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}
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}
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}
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/**
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* Determine the object type and sub type from the requested route. We need to know both the underlying WordPress
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* object type as well as post type or taxonomy in order to provide the right context when getting/updating fields.
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*/
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private function set_object_types() {
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$base = $this->get_url_param( 'rest_base' );
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$child_base = $this->get_url_param( 'child_rest_base' );
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// We need a matched rest base to proceed here. If we haven't matched one while parsing the request, bail.
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if ( is_null( $base ) ) {
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return;
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}
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// Determine the matching object type from the rest base. Start with users as that is simple. From there,
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// check post types then check taxonomies if a matching post type cannot be found.
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if ( $base === 'users' ) {
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$this->object_type = $this->object_sub_type = 'user';
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} elseif ( $base === 'comments' ) {
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$this->object_type = $this->object_sub_type = 'comment';
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} elseif ( $post_type = $this->get_post_type_by_rest_base( $base ) ) {
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$this->object_type = 'post';
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$this->object_sub_type = $post_type->name;
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// Autosaves and revisions are mostly handled the same by WP, and share the same schema.
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if ( in_array( $this->get_url_param( 'child_rest_base' ), array( 'revisions', 'autosaves' ) ) ) {
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$this->child_object_type = $this->object_sub_type . '-revision';
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}
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} elseif ( $taxonomy = $this->get_taxonomy_by_rest_base( $base ) ) {
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$this->object_type = 'term';
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$this->object_sub_type = $taxonomy->name;
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}
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}
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/**
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* Find the REST enabled post type object that matches the given REST base.
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*
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* @param string $rest_base
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* @return WP_Post_Type|null
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*/
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private function get_post_type_by_rest_base( $rest_base ) {
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$types = get_post_types( array( 'show_in_rest' => true ), 'objects' );
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foreach ( $types as $type ) {
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if ( acf_get_object_type_rest_base( $type ) === $rest_base ) {
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return $type;
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}
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}
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return null;
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}
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/**
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* Find the REST enabled taxonomy object that matches the given REST base.
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*
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* @param $rest_base
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* @return WP_Taxonomy|null
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*/
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private function get_taxonomy_by_rest_base( $rest_base ) {
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$taxonomies = get_taxonomies( array( 'show_in_rest' => true ), 'objects' );
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foreach ( $taxonomies as $taxonomy ) {
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if ( acf_get_object_type_rest_base( $taxonomy ) === $rest_base ) {
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return $taxonomy;
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}
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}
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return null;
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}
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}
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