138 lines
3.8 KiB
PHP
138 lines
3.8 KiB
PHP
<?php
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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/**
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* WC_Helper_API Class
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*
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* Provides a communication interface with the WooCommerce.com Helper API.
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*/
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class WC_Helper_API {
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public static $api_base;
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/**
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* Load
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*
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* Allow devs to point the API base to a local API development or staging server.
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* Note that sslverify will be turned off for the woocommerce.dev + WP_DEBUG combination.
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* The URL can be changed on plugins_loaded before priority 10.
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*/
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public static function load() {
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self::$api_base = apply_filters( 'woocommerce_helper_api_base', 'https://woocommerce.com/wp-json/helper/1.0' );
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}
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/**
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* Perform an HTTP request to the Helper API.
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*
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* @param string $endpoint The endpoint to request.
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* @param array $args Additional data for the request. Set authenticated to a truthy value to enable auth.
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*
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* @return array|WP_Error The response from wp_safe_remote_request()
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*/
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public static function request( $endpoint, $args = array() ) {
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$url = self::url( $endpoint );
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if ( ! empty( $args['authenticated'] ) ) {
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if ( ! self::_authenticate( $url, $args ) ) {
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return new WP_Error( 'authentication', 'Authentication failed.' );
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}
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}
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/**
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* Allow developers to filter the request args passed to wp_safe_remote_request().
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* Useful to remove sslverify when working on a local api dev environment.
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*/
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$args = apply_filters( 'woocommerce_helper_api_request_args', $args, $endpoint );
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// TODO: Check response signatures on certain endpoints.
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return wp_safe_remote_request( $url, $args );
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}
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/**
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* Adds authentication headers to an HTTP request.
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*
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* @param string $url The request URI.
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* @param array $args By-ref, the args that will be passed to wp_remote_request().
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* @return bool Were the headers added?
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*/
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private static function _authenticate( $url, &$args ) {
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$auth = WC_Helper_Options::get( 'auth' );
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if ( empty( $auth['access_token'] ) || empty( $auth['access_token_secret'] ) ) {
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return false;
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}
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$request_uri = parse_url( $url, PHP_URL_PATH );
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$query_string = parse_url( $url, PHP_URL_QUERY );
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if ( is_string( $query_string ) ) {
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$request_uri .= '?' . $query_string;
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}
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$data = array(
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'host' => parse_url( $url, PHP_URL_HOST ),
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'request_uri' => $request_uri,
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'method' => ! empty( $args['method'] ) ? $args['method'] : 'GET',
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);
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if ( ! empty( $args['body'] ) ) {
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$data['body'] = $args['body'];
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}
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$signature = hash_hmac( 'sha256', json_encode( $data ), $auth['access_token_secret'] );
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if ( empty( $args['headers'] ) ) {
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$args['headers'] = array();
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}
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$args['headers'] = array(
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'Authorization' => 'Bearer ' . $auth['access_token'],
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'X-Woo-Signature' => $signature,
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);
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return true;
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}
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/**
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* Wrapper for self::request().
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*
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* @param string $endpoint The helper API endpoint to request.
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* @param array $args Arguments passed to wp_remote_request().
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*
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* @return array The response object from wp_safe_remote_request().
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*/
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public static function get( $endpoint, $args = array() ) {
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$args['method'] = 'GET';
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return self::request( $endpoint, $args );
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}
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/**
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* Wrapper for self::request().
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*
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* @param string $endpoint The helper API endpoint to request.
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* @param array $args Arguments passed to wp_remote_request().
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*
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* @return array The response object from wp_safe_remote_request().
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*/
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public static function post( $endpoint, $args = array() ) {
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$args['method'] = 'POST';
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return self::request( $endpoint, $args );
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}
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/**
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* Using the API base, form a request URL from a given endpoint.
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*
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* @param string $endpoint The endpoint to request.
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*
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* @return string The absolute endpoint URL.
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*/
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public static function url( $endpoint ) {
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$endpoint = ltrim( $endpoint, '/' );
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$endpoint = sprintf( '%s/%s', self::$api_base, $endpoint );
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$endpoint = esc_url_raw( $endpoint );
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return $endpoint;
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}
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}
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WC_Helper_API::load();
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