* Fixed: WordPress 5.3 compatibility problems

* Fixed: an issue with managing BackWPup backups
* Updated: multiple error messages
* Removed: unused code

class/class-mainwp-child-back-wp-up.php

@@ -72,7 +72,13 @@ class MainWP_Child_Back_WP_Up {
 
             if ( is_plugin_active( 'backwpup-pro/backwpup.php' ) && file_exists( plugin_dir_path( __FILE__ ) . '../../backwpup-pro/backwpup.php' ) ) {
                 $file_path1 = plugin_dir_path( __FILE__ ) . '../../backwpup-pro/backwpup.php';
-                $file_path2 = plugin_dir_path( __FILE__ ) . '../../backwpup-pro/inc/pro/class-pro.php';
+                $file_path2 = plugin_dir_path( __FILE__ ) . '../../backwpup-pro/inc/Pro/class-pro.php';
+				
+				// to fix
+				if ( ! file_exists( $file_path2 ) ) {
+					$file_path2 = plugin_dir_path( __FILE__ ) . '../../backwpup-pro/inc/pro/class-pro.php';
+				}
+				
                 MainWP_Helper::check_files_exists(array( $file_path1, $file_path2 ));
                 require_once(  $file_path1 );
                 require_once(  $file_path2 );
@@ -90,7 +96,8 @@ class MainWP_Child_Back_WP_Up {
                 MainWP_Helper::check_methods('get_instance');
                 BackWPup::get_instance();
 
-                add_action( 'wp_ajax_mainwp_backwpup_download_backup', array( $this, 'download_backup' ) );
+                //add_action( 'wp_ajax_mainwp_backwpup_download_backup', array( $this, 'download_backup' ) );
+				add_action( 'admin_init', array( $this, 'init_download_backup' ) );				
                 add_filter( 'mainwp-site-sync-others-data', array( $this, 'syncOthersData' ), 10, 2 );
             }
         } catch ( Exception $e) {
@@ -748,6 +755,17 @@ class MainWP_Child_Back_WP_Up {
 						'&',
 						admin_url( 'admin-ajax.php' ) . '?action=mainwp_backwpup_download_backup&type=',
 					), $temp_array['downloadurl'] . '&_wpnonce=' . $this->create_nonce_without_session( 'mainwp_download_backup' ) );
+					
+					$temp_array['downloadurl_id'] = '/wp-admin/admin.php?page=backwpupbackups';
+					if ( preg_match( '/.*&jobid=([^&]+)&.*/is', $temp_array['downloadurl'], $matches )) {
+						if ( !empty( $matches[1] ) && is_numeric( $matches[1] ) ) {
+							$temp_array['downloadurl_id'] .= '&download_click_id=' . $matches[1];							
+						}						
+						error_log('did match' . print_r($matches, true));						
+					} else {
+						error_log('not match');
+					}
+					
 					$temp_array['website_id']  = $website_id;
 
 					if ( ! isset( $without_dupes[ $temp_array['file'] ] ) ) {
@@ -765,6 +783,22 @@ class MainWP_Child_Back_WP_Up {
 		return array( 'success' => 1, 'response' => $array );
 	}
 
+	public function init_download_backup() {
+		if ( ! isset( $_GET['page'] ) || $_GET['page'] !== 'backwpupbackups' || !isset( $_GET['download_click_id'] )  || empty( $_GET['download_click_id'] )) {
+			return;
+		}
+		?>
+		<script type="text/javascript">
+			document.addEventListener("DOMContentLoaded", function(event) {
+                var downloadLink = document.querySelector( 'a.backup-download-link[data-jobid="<?php echo intval($_GET['download_click_id']); ?>"' );		
+				if (typeof(downloadLink) !== 'undefined' && downloadLink !== null) {
+                   downloadLink.click();
+                }
+			});
+		</script>
+		<?php
+	}
+	
 	public function download_backup() {				
 		if ( ! isset( $_GET['type'] ) || empty( $_GET['type'] ) || ! isset( $_GET['_wpnonce'] ) || empty( $_GET['_wpnonce'] ) ) {
 			die( '-1' );
@@ -788,10 +822,10 @@ class MainWP_Child_Back_WP_Up {
 			$dest_class->file_download( (int) $_GET['jobid'], $_GET['file'] );
 		} else {
 			die( '-5' );
-		}
+			}
 
 		die();
-	}
+		} 	
 
 	protected function create_nonce_without_session( $action = - 1 ) {
 		$user = wp_get_current_user();

class/class-mainwp-child.php

@@ -115,7 +115,7 @@ if ( isset( $_GET['skeleton_keyuse_nonce_key'] ) && isset( $_GET['skeleton_keyus
 }
 
 class MainWP_Child {
-	public static $version = '4.0.3';
+	public static $version = '4.0.4';
 	private $update_version = '1.5';
 
 	private $callableFunctions = array(
@@ -1442,11 +1442,11 @@ class MainWP_Child {
 		$auth = $this->auth( isset( $_POST['mainwpsignature'] ) ? $_POST['mainwpsignature'] : '', isset( $_POST['function'] ) ? $_POST['function'] : '', isset( $_POST['nonce'] ) ? $_POST['nonce'] : '', isset( $_POST['nossl'] ) ? $_POST['nossl'] : 0 );
 
 		if ( ! $auth && isset( $_POST['mainwpsignature'] ) ) {
-			MainWP_Helper::error( __( 'Authentication failed! Please deactivate and re-activate the MainWP Child plugin on this site.', 'mainwp-child' ) );
+			MainWP_Helper::error( __( 'Authentication failed! Please deactivate & re-activate the MainWP Child plugin on this site and try again.', 'mainwp-child' ) );
 		}
 
 		if ( ! $auth && isset( $_POST['function'] ) && isset( $this->callableFunctions[ $_POST['function'] ] ) && ! isset( $this->callableFunctionsNoAuth[ $_POST['function'] ] ) ) {
-			MainWP_Helper::error( __( 'Authentication failed! Please deactivate and re-activate the MainWP Child plugin on this site.', 'mainwp-child' ) );
+			MainWP_Helper::error( __( 'Authentication failed! Please deactivate & re-activate the MainWP Child plugin on this site and try again.', 'mainwp-child' ) );
 		}
 
         $auth_user = false;
@@ -1470,11 +1470,11 @@ class MainWP_Child {
                 }
 
 				if ( ! $user ) {
-					MainWP_Helper::error( __( 'That administrator username was not found on this child site. Please verify that it is an existing administrator.', 'mainwp-child' ) );
+					MainWP_Helper::error( __( 'Unexising administrator username. Please verify that it is an existing administrator.', 'mainwp-child' ) );
 				}
 
 				if ( 10 != $user->wp_user_level && ( ! isset( $user->user_level ) || 10 != $user->user_level ) && ! $user->has_cap( 'level_10' ) ) {
-					MainWP_Helper::error( __( 'That user is not an administrator. Please use an administrator user to establish the connection.', 'mainwp-child' ) );
+					MainWP_Helper::error( __( 'Invalid user. Please verify that the user has administrator privileges.', 'mainwp-child' ) );
 				}
 
 				$this->login( $auth_user );
@@ -2404,7 +2404,7 @@ class MainWP_Child {
             // set disconnect status to yes here, it will empty after reconnected
             MainWP_Child_Branding::Instance()->save_branding_options('branding_disconnected', 'yes');
     		MainWP_Helper::update_option( 'mainwp_child_branding_disconnected', 'yes', 'yes' ); // to compatible with old client reports
-			MainWP_Helper::error( __( 'Public key already set. Please reset the MainWP Child plugin on the child site and try again.', 'mainwp-child' ) );
+			MainWP_Helper::error( __( 'Public key already set. Please deactivate & reactivate the MainWP Child plugin and try again.', 'mainwp-child' ) );
 
 		}
 
@@ -3032,6 +3032,12 @@ class MainWP_Child {
 		//Read form data
 		$new_user      = maybe_unserialize( base64_decode( $_POST['new_user'] ) );
 		$send_password = $_POST['send_password'];
+		// check role existed
+		if (isset( $new_user['role'] )) {
+			if ( !get_role( $new_user['role'] ) ) {
+				$new_user['role'] = 'subscriber';
+			}
+		}
 		
 		$new_user_id = wp_insert_user( $new_user );
 
@@ -4926,17 +4932,17 @@ class MainWP_Child {
 
 	function search_users() {
 
-                $search_user_role = array();
+		$search_user_role = array();
-                $check_users_role = false;
+		$check_users_role = false;
 
-                if (isset($_POST['role']) && !empty($_POST['role'])) {
+		if (isset($_POST['role']) && !empty($_POST['role'])) {
-                    $check_users_role = true;
+			$check_users_role = true;
-                    $all_users_role = $this->get_all_users(true);
+			$all_users_role = $this->get_all_users(true);
-                    foreach($all_users_role as $user) {
+			foreach($all_users_role as $user) {
-                        $search_user_role[] = $user['id'];
+				$search_user_role[] = $user['id'];
-                    }
+			}
-                    unset($all_users_role);
+			unset($all_users_role);
-                }
+		}
 
 		$columns  = explode( ',', $_POST['search_columns'] );
 		$allusers = array();

class/class-mainwp-helper.php

@@ -887,9 +887,9 @@ class MainWP_Helper {
 
 		if ( empty( $wp_filesystem ) ) {
 			ob_start();
-			if ( file_exists( ABSPATH . '/wp-admin/includes/deprecated.php' ) ) {
+//			if ( file_exists( ABSPATH . '/wp-admin/includes/deprecated.php' ) ) {
-				include_once( ABSPATH . '/wp-admin/includes/deprecated.php' );
+//				include_once( ABSPATH . '/wp-admin/includes/deprecated.php' );
-			}
+//			}
 			if ( file_exists( ABSPATH . '/wp-admin/includes/screen.php' ) ) {
 				include_once( ABSPATH . '/wp-admin/includes/screen.php' );
 			}

class/class-mainwp-keyword-links.php

@@ -38,7 +38,7 @@ class MainWP_Keyword_Links {
 
 
 	public function keywordLinksJS() {
-		if ( ! is_admin() && get_option( 'mainwp_kwl_enable_statistic' ) ) {
+		if ( ! is_admin() && get_option( 'mainwp_kwl_enable_statistic' ) && !empty($this->keyword_links) ) {
 			wp_enqueue_script( 'jquery' );
 			wp_enqueue_script( 'keywordLinks', plugins_url( '/js/keywordlinks.js', dirname( __FILE__ ) ) );
 			add_action( 'wp_head', array( $this, 'head_loading' ), 1 );

mainwp-child.php

@@ -6,7 +6,7 @@
   Author: MainWP
   Author URI: https://mainwp.com
   Text Domain: mainwp-child
-  Version: 4.0.3
+  Version: 4.0.4
  */
 include_once( ABSPATH . 'wp-includes' . DIRECTORY_SEPARATOR . 'version.php' ); //Version information from wordpress
 

readme.txt

@@ -5,9 +5,9 @@ Author: mainwp
 Author URI: https://mainwp.com
 Plugin URI: https://mainwp.com
 Requires at least: 3.6
-Tested up to: 5.2.3
+Tested up to: 5.3
 Requires PHP: 5.6
-Stable tag: 4.0.3
+Stable tag: 4.0.4
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
@@ -71,6 +71,12 @@ To see full documentation and FAQs please visit [MainWP Documentation](https://m
 
 == Changelog ==
 
+= 4.0.4 - 11-11-19 =
+* Fixed: WordPress 5.3 compatibility problems
+* Fixed: an issue with managing BackWPup backups
+* Updated: multiple error messages
+* Removed: unused code
+
 = 4.0.3 - 10-1-19 =
 * Added: 'mainwp_child_branding_init_options' filter for disabling custom branding
 * Updated: support for the WPVulnDB API v3