<?php
/**
* @package Freemius
* @copyright Copyright (c) 2015, Freemius, Inc.
* @license https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License Version 3
* @since 1.0.3
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
define( 'WP_FS__SECURITY_PARAMS_PREFIX', 's_' );
/**
* Class FS_Security
*/
class FS_Security {
/**
* @var FS_Security
* @since 1.0.3
*/
private static $_instance;
/**
* @var FS_Logger
* @since 1.0.3
*/
private static $_logger;
/**
* @return \FS_Security
*/
public static function instance() {
if ( ! isset( self::$_instance ) ) {
self::$_instance = new FS_Security();
self::$_logger = FS_Logger::get_logger(
WP_FS__SLUG,
WP_FS__DEBUG_SDK,
WP_FS__ECHO_DEBUG_SDK
);
}
return self::$_instance;
}
private function __construct() {
}
/**
* @param \FS_Scope_Entity $entity
* @param int $timestamp
* @param string $action
*
* @return string
*/
function get_secure_token( FS_Scope_Entity $entity, $timestamp, $action = '' ) {
return md5(
$timestamp .
$entity->id .
$entity->secret_key .
$entity->public_key .
$action
);
}
/**
* @param \FS_Scope_Entity $entity
* @param int|bool $timestamp
* @param string $action
*
* @return array
*/
function get_context_params( FS_Scope_Entity $entity, $timestamp = false, $action = '' ) {
if ( false === $timestamp ) {
$timestamp = time();
}
return array(
's_ctx_type' => $entity->get_type(),
's_ctx_id' => $entity->id,
's_ctx_ts' => $timestamp,
's_ctx_secure' => $this->get_secure_token( $entity, $timestamp, $action ),
);
}
}