class-wc-wccom-site.php
<?php
/**
* WooCommerce.com Product Installation.
*
* @package WooCommerce\WCCom
* @since 3.7.0
*/
use WC_REST_WCCOM_Site_Installer_Error_Codes as Installer_Error_Codes;
use WC_REST_WCCOM_Site_Installer_Error as Installer_Error;
defined( 'ABSPATH' ) || exit;
/**
* WC_WCCOM_Site Class
*
* Main class for WooCommerce.com connected site.
*/
class WC_WCCOM_Site {
const AUTH_ERROR_FILTER_NAME = 'wccom_auth_error';
/**
* Load the WCCOM site class.
*
* @since 3.7.0
*/
public static function load() {
self::includes();
add_action( 'woocommerce_wccom_install_products', array( 'WC_WCCOM_Site_Installer', 'install' ) );
add_filter( 'determine_current_user', array( __CLASS__, 'authenticate_wccom' ), 14 );
add_action( 'woocommerce_rest_api_get_rest_namespaces', array( __CLASS__, 'register_rest_namespace' ) );
}
/**
* Include support files.
*
* @since 3.7.0
*/
protected static function includes() {
require_once WC_ABSPATH . 'includes/admin/helper/class-wc-helper.php';
require_once WC_ABSPATH . 'includes/wccom-site/class-wc-wccom-site-installer.php';
}
/**
* Authenticate WooCommerce.com request.
*
* @since 3.7.0
* @param int|false $user_id User ID.
* @return int|false
*/
public static function authenticate_wccom( $user_id ) {
if ( ! empty( $user_id ) || ! self::is_request_to_wccom_site_rest_api() ) {
return $user_id;
}
$auth_header = trim( self::get_authorization_header() );
if ( stripos( $auth_header, 'Bearer ' ) === 0 ) {
$access_token = trim( substr( $auth_header, 7 ) );
} elseif ( ! empty( $_GET['token'] ) && is_string( $_GET['token'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$access_token = trim( $_GET['token'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
} else {
add_filter(
self::AUTH_ERROR_FILTER_NAME,
function() {
return new Installer_Error( Installer_Error_Codes::NO_ACCESS_TOKEN );
}
);
return false;
}
if ( ! empty( $_SERVER['HTTP_X_WOO_SIGNATURE'] ) ) {
$signature = trim( $_SERVER['HTTP_X_WOO_SIGNATURE'] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.MissingUnslash,WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
} elseif ( ! empty( $_GET['signature'] ) && is_string( $_GET['signature'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$signature = trim( $_GET['signature'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
} else {
add_filter(
self::AUTH_ERROR_FILTER_NAME,
function() {
return new Installer_Error( Installer_Error_Codes::NO_SIGNATURE );
}
);
return false;
}
require_once WC_ABSPATH . 'includes/admin/helper/class-wc-helper-options.php';
$site_auth = WC_Helper_Options::get( 'auth' );
if ( empty( $site_auth['access_token'] ) ) {
add_filter(
self::AUTH_ERROR_FILTER_NAME,
function() {
return new Installer_Error( Installer_Error_Codes::SITE_NOT_CONNECTED );
}
);
return false;
}
if ( ! hash_equals( $access_token, $site_auth['access_token'] ) ) {
add_filter(
self::AUTH_ERROR_FILTER_NAME,
function() {
return new Installer_Error( Installer_Error_Codes::INVALID_TOKEN );
}
);
return false;
}
$body = WP_REST_Server::get_raw_data();
if ( ! self::verify_wccom_request( $body, $signature, $site_auth['access_token_secret'] ) ) {
add_filter(
self::AUTH_ERROR_FILTER_NAME,
function() {
return new Installer_Error( Installer_Error_Codes::REQUEST_VERIFICATION_FAILED );
}
);
return false;
}
$user = get_user_by( 'id', $site_auth['user_id'] );
if ( ! $user ) {
add_filter(
self::AUTH_ERROR_FILTER_NAME,
function() {
return new Installer_Error( Installer_Error_Codes::USER_NOT_FOUND );
}
);
return false;
}
return $user;
}
/**
* Get the authorization header.
*
* On certain systems and configurations, the Authorization header will be
* stripped out by the server or PHP. Typically this is then used to
* generate `PHP_AUTH_USER`/`PHP_AUTH_PASS` but not passed on. We use
* `getallheaders` here to try and grab it out instead.
*
* @since 3.7.0
* @return string Authorization header if set.
*/
protected static function get_authorization_header() {
if ( ! empty( $_SERVER['HTTP_AUTHORIZATION'] ) ) {
return wp_unslash( $_SERVER['HTTP_AUTHORIZATION'] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
}
if ( function_exists( 'getallheaders' ) ) {
$headers = getallheaders();
// Check for the authoization header case-insensitively.
foreach ( $headers as $key => $value ) {
if ( 'authorization' === strtolower( $key ) ) {
return $value;
}
}
}
return '';
}
/**
* Check if this is a request to WCCOM Site REST API.
*
* @since 3.7.0
* @return bool
*/
protected static function is_request_to_wccom_site_rest_api() {
if ( isset( $_REQUEST['rest_route'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$route = wp_unslash( $_REQUEST['rest_route'] ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized, WordPress.Security.NonceVerification.Recommended
$rest_prefix = '';
} else {
$route = wp_unslash( add_query_arg( array() ) );
$rest_prefix = trailingslashit( rest_get_url_prefix() );
}
return false !== strpos( $route, $rest_prefix . 'wccom-site/' );
}
/**
* Verify WooCommerce.com request from a given body and signature request.
*
* @since 3.7.0
* @param string $body Request body.
* @param string $signature Request signature found in X-Woo-Signature header.
* @param string $access_token_secret Access token secret for this site.
* @return bool
*/
protected static function verify_wccom_request( $body, $signature, $access_token_secret ) {
// phpcs:disable WordPress.Security.ValidatedSanitizedInput.InputNotValidated, WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$data = array(
'host' => $_SERVER['HTTP_HOST'],
'request_uri' => urldecode( remove_query_arg( array( 'token', 'signature' ), $_SERVER['REQUEST_URI'] ) ),
'method' => strtoupper( $_SERVER['REQUEST_METHOD'] ),
);
// phpcs:enable
if ( ! empty( $body ) ) {
$data['body'] = $body;
}
$expected_signature = hash_hmac( 'sha256', wp_json_encode( $data ), $access_token_secret );
return hash_equals( $expected_signature, $signature );
}
/**
* Register wccom-site REST namespace.
*
* @since 3.7.0
* @param array $namespaces List of registered namespaces.
* @return array Registered namespaces.
*/
public static function register_rest_namespace( $namespaces ) {
require_once WC_ABSPATH . 'includes/wccom-site/rest-api/class-wc-rest-wccom-site-installer-error-codes.php';
require_once WC_ABSPATH . 'includes/wccom-site/rest-api/class-wc-rest-wccom-site-installer-error.php';
require_once WC_ABSPATH . 'includes/wccom-site/rest-api/endpoints/abstract-wc-rest-wccom-site-controller.php';
require_once WC_ABSPATH . 'includes/wccom-site/rest-api/endpoints/class-wc-rest-wccom-site-installer-controller.php';
require_once WC_ABSPATH . 'includes/wccom-site/rest-api/endpoints/class-wc-rest-wccom-site-ssr-controller.php';
require_once WC_ABSPATH . 'includes/wccom-site/rest-api/endpoints/class-wc-rest-wccom-site-status-controller.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/class-wc-wccom-site-installation-state.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/class-wc-wccom-site-installation-state-storage.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/class-wc-wccom-site-installation-manager.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/installation-steps/interface-installaton-step.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/installation-steps/class-wc-wccom-site-installation-step-get-product-info.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/installation-steps/class-wc-wccom-site-installation-step-download-product.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/installation-steps/class-wc-wccom-site-installation-step-unpack-product.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/installation-steps/class-wc-wccom-site-installation-step-move-product.php';
require_once WC_ABSPATH . 'includes/wccom-site/installation/installation-steps/class-wc-wccom-site-installation-step-activate-product.php';
$namespaces['wccom-site/v2'] = array(
'installer' => 'WC_REST_WCCOM_Site_Installer_Controller',
'ssr' => 'WC_REST_WCCOM_Site_SSR_Controller',
'status' => 'WC_REST_WCCOM_Site_Status_Controller',
);
return $namespaces;
}
}
WC_WCCOM_Site::load();
