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<?php
/**
* Genesis Framework.
*
* WARNING: This file is part of the core Genesis Framework. DO NOT edit this file under any circumstances.
* Please do all modifications in the form of a child theme.
*
* @package StudioPress\Genesis
* @author StudioPress
* @license GPL-2.0-or-later
* @link https://my.studiopress.com/themes/genesis/
*/
/**
* Check and updates server for update information.
*
* Uses the WordPress HTTP API to check an external url for update information.
* Data returned can be saved to a transient to avoid http calls on every page load.
*
* @since 2.7.0
*/
class Genesis_Update_Check {
/**
* POST URL key.
*
* @var string
*
* @since 2.7.0
*/
const POST_URL_KEY = 'post_url';
/**
* POST args key.
*
* @var string
*
* @since 2.7.0
*/
const POST_ARGS_KEY = 'post_args';
/**
* Required data key
*
* @var string
*
* @since 2.7.0
*/
const REQ_DATA_KEY = 'req_data_keys';
/**
* URL to POST to.
*
* @var string
*
* @since 2.7.0
*/
protected $post_url;
/**
* Args used to build the POST request.
*
* @var array
*
* @since 2.7.0
*/
protected $post_args;
/**
* Required data keys.
*
* @var array
*
* @since 2.7.0
*/
protected $req_data_keys;
/**
* The results of an update check.
*
* @var array
*
* @since 2.7.0
*/
protected $update = [];
/**
* Constructor.
*
* @since 2.7.0
*
* @param array $config The configuration array used to build the server request and process the response.
*/
public function __construct( array $config ) {
$this->post_url = $config[ self::POST_URL_KEY ];
$this->post_args = $config[ self::POST_ARGS_KEY ];
$this->req_data_keys = isset( $config[ self::REQ_DATA_KEY ] ) ? $config[ self::REQ_DATA_KEY ] : [];
}
/**
* Retrieve and assemble update information and return the array.
*
* @since 2.7.0
*
* @return array Array of update information.
*/
public function get_update() {
// If we've already done the work, return.
if ( $this->update ) {
return $this->update;
}
$this->update = $this->validate_response( maybe_unserialize( $this->get_response_body() ) );
return $this->update;
}
/**
* Validate the format and data of the update response.
*
* @param array $response The response to validate.
* @return array Empty array if invalid, otherwise unaltered response.
*/
protected function validate_response( $response ) {
if ( ! is_array( $response ) ) {
return [];
}
foreach ( $this->req_data_keys as $req ) {
if ( ! array_key_exists( $req, $response ) ) {
return [];
}
}
return $response;
}
/**
* Get the POST response.
*
* @since 2.7.0
*
* @return WP_Error|array The response or WP_Error on failure.
*/
protected function get_response() {
return wp_remote_post( $this->post_url, $this->post_args );
}
/**
* Get the body of the response.
*
* @since 2.7.0
*
* @return string The body of the response. Empty string if no body or incorrect parameter given.
*/
protected function get_response_body() {
return wp_remote_retrieve_body( $this->get_response() );
}
}