Connection: Add REST support for jsonAPI endpoints

projects/plugins/jetpack/changelog/add-json-api-direct-access

@@ -0,0 +1,4 @@
+Significance: minor
+Type: other
+
+Add REST support for jsonAPI endpoints.

projects/plugins/jetpack/class.jetpack.php

@@ -933,8 +933,11 @@ function ( $methods ) {
 		if ( $is_connection_ready ) {
 			require_once JETPACK__PLUGIN_DIR . '_inc/lib/class.jetpack-iframe-embed.php';
 			add_action( 'init', array( 'Jetpack_Iframe_Embed', 'init' ), 9, 0 );
+
 			require_once JETPACK__PLUGIN_DIR . '_inc/lib/class.jetpack-keyring-service-helper.php';
 			add_action( 'init', array( 'Jetpack_Keyring_Service_Helper', 'init' ), 9, 0 );
+
+			add_action( 'rest_api_init', array( $this, 'maybe_initialize_rest_jsonapi' ) );
 		}
 	}
 
@@ -6340,6 +6343,19 @@ public function run_initialize_tracking_action() {
 		do_action( 'jetpack_initialize_tracking' );
 	}
 
+	/**
+	 * Initialize REST jsonAPI if needed.
+	 *
+	 * @return void
+	 */
+	public function maybe_initialize_rest_jsonapi() {
+		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
+		if ( ! empty( $_GET['jsonapi'] ) && ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) ) {
+			define( 'WPCOM_JSON_API__BASE', 'public-api.wordpress.com/rest/v1' );
+			require_once JETPACK__PLUGIN_DIR . 'class.json-api-endpoints.php';
+		}
+	}
+
 	/**
 	 * Run plugin post-activation actions if we need to.
 	 *

projects/plugins/jetpack/class.json-api-endpoints.php

@@ -6,6 +6,7 @@
  */
 
 use Automattic\Jetpack\Connection\Client;
+use Automattic\Jetpack\Connection\Manager;
 use Automattic\Jetpack\Status;
 
 require_once __DIR__ . '/json-api-config.php';
@@ -124,6 +125,13 @@ abstract class WPCOM_JSON_API_Endpoint {
 	 */
 	public $path_labels = array();
 
+	/**
+	 * The REST endpoint if available.
+	 *
+	 * @var bool
+	 */
+	public $rest_route = null;
+
 	/**
 	 * Accepted query parameters
 	 *
@@ -277,6 +285,11 @@ abstract class WPCOM_JSON_API_Endpoint {
 	 */
 	public $allow_fallback_to_jetpack_blog_token = false;
 
+	/**
+	 * REST namespace.
+	 */
+	const REST_NAMESPACE = 'rest/v1';
+
 	/**
 	 * Constructor.
 	 *
@@ -300,6 +313,7 @@ public function __construct( $args ) {
 			'new_version'                          => WPCOM_JSON_API__CURRENT_VERSION,
 			'jp_disabled'                          => false,
 			'path_labels'                          => array(),
+			'rest_route'                           => null,
 			'request_format'                       => array(),
 			'response_format'                      => array(),
 			'query_parameters'                     => array(),
@@ -334,6 +348,7 @@ public function __construct( $args ) {
 		$this->method      = $args['method'];
 		$this->path        = $args['path'];
 		$this->path_labels = $args['path_labels'];
+		$this->rest_route  = $args['rest_route'];
 		$this->min_version = $args['min_version'];
 		$this->max_version = $args['max_version'];
 		$this->deprecated  = $args['deprecated'];
@@ -387,6 +402,10 @@ public function __construct( $args ) {
 		$this->example_response     = $args['example_response'];
 
 		$this->api->add( $this );
+
+		if ( $this->rest_route ) {
+			$this->create_rest_route_for_endpoint();
+		}
 	}
 
 	/**
@@ -2618,6 +2637,43 @@ public function get_amp_cache_origins( $siteurl ) {
 		);
 	}
 
+	/**
+	 * Register a REST route for this jsonAPI endpoint.
+	 *
+	 * @return void
+	 * @throws Exception The exception if something goes wrong.
+	 */
+	public function create_rest_route_for_endpoint() {
+		register_rest_route(
+			static::REST_NAMESPACE,
+			$this->rest_route,
+			array(
+				'methods'  => $this->method,
+				'callback' => array( $this, 'rest_callback' ),
+			)
+		);
+	}
+
+	/**
+	 * Handle the rest call.
+	 *
+	 * @param WP_REST_Request $request The request object.
+	 *
+	 * @return mixed|WP_Error
+	 */
+	public function rest_callback( WP_REST_Request $request ) {
+		$manager = new Manager( 'jetpack' );
+		if ( ! $manager->is_connected() ) {
+			return new WP_Error( 'site_not_connected' );
+		}
+
+		$blog_id = Jetpack_Options::get_option( 'id' );
+		return call_user_func_array(
+			array( $this, 'callback' ),
+			array_values( array( $this->path, $blog_id ) + $request->get_url_params() )
+		);
+	}
+
 	/**
 	 * Return endpoint response
 	 *

projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-get-post-endpoint.php

@@ -18,6 +18,7 @@
 			'$site'    => '(int|string) Site ID or domain',
 			'$post_ID' => '(int) The post ID',
 		),
+		'rest_route'                           => '/posts/(?P<id>\d+)',
 
 		'allow_fallback_to_jetpack_blog_token' => true,
 
@@ -36,6 +37,7 @@
 			'$site'      => '(int|string) Site ID or domain',
 			'$post_name' => '(string) The post name (a.k.a. slug)',
 		),
+		'rest_route'      => '/posts/name/(?P<name>[\w_-]+)',
 
 		'example_request' => 'https://public-api.wordpress.com/rest/v1/sites/en.blog.wordpress.com/posts/name:blogging-and-stuff',
 	)
@@ -54,6 +56,7 @@
 			'$site'      => '(int|string) Site ID or domain',
 			'$post_slug' => '(string) The post slug (a.k.a. sanitized name)',
 		),
+		'rest_route'                           => '/posts/slug/(?P<slug>[\w_-]+)',
 
 		'allow_fallback_to_jetpack_blog_token' => true,