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<?php
/**
* WooCommerce API
*
* Handles parsing JSON request bodies and generating JSON responses
*
* @author WooThemes
* @category API
* @package WooCommerce/API
* @since 2.1
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
class WC_API_JSON_Handler implements WC_API_Handler {
/**
* Get the content type for the response
*
* @since 2.1
* @return string
*/
public function get_content_type() {
return sprintf( '%s; charset=%s', isset( $_GET['_jsonp'] ) ? 'application/javascript' : 'application/json', get_option( 'blog_charset' ) );
}
/**
* Parse the raw request body entity
*
* @since 2.1
* @param string $body the raw request body
* @return array|mixed
*/
public function parse_body( $body ) {
return json_decode( $body, true );
}
/**
* Generate a JSON response given an array of data
*
* @since 2.1
* @param array $data the response data
* @return string
*/
public function generate_response( $data ) {
if ( isset( $_GET['_jsonp'] ) ) {
// JSONP enabled by default
if ( ! apply_filters( 'woocommerce_api_jsonp_enabled', true ) ) {
WC()->api->server->send_status( 400 );
$data = array( array( 'code' => 'woocommerce_api_jsonp_disabled', 'message' => __( 'JSONP support is disabled on this site', 'woocommerce' ) ) );
}
// Check for invalid characters (only alphanumeric allowed)
if ( preg_match( '/\W/', $_GET['_jsonp'] ) ) {
WC()->api->server->send_status( 400 );
$data = array( array( 'code' => 'woocommerce_api_jsonp_callback_invalid', __( 'The JSONP callback function is invalid', 'woocommerce' ) ) );
}
// see http://miki.it/blog/2014/7/8/abusing-jsonp-with-rosetta-flash/
WC()->api->server->header( 'X-Content-Type-Options', 'nosniff' );
// Prepend '/**/' to mitigate possible JSONP Flash attacks
return '/**/' . $_GET['_jsonp'] . '(' . json_encode( $data ) . ')';
}
return json_encode( $data );
}
}
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