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<?php
/**
* Plugin Name: WP Rollback
* Plugin URI: https://wprollback.com/
* Description: Rollback (or forward) any WordPress.org plugin, theme or block like a boss.
* Author: WP Rollback
* Author URI: https://wprollback.com/
* Version: 2.0.5
* Text Domain: wp-rollback
* Domain Path: /languages
*
* WP Rollback is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* any later version.
*
* WP Rollback is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WP Rollback. If not, see <http://www.gnu.org/licenses/>.
*/
// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Main WP Rollback Class
*
* @since 1.0
*/
if ( ! class_exists( 'WP_Rollback' ) ) :
/**
* Class WP_Rollback
*/
final class WP_Rollback {
/**
* WP_Rollback instance
*
* @since 1.0
* @var WP_Rollback The one and only
*/
private static $instance;
/**
* Plugin file.
*
* @var string
*/
public $plugin_file;
/**
* Plugin slug.
*
* @var string
*/
public $plugin_slug;
/**
* Versions.
*
* @var array
*/
public $versions = [];
/**
* Current version.
*
* @var string
*/
public $current_version;
/**
* Multisite compatibility class.
*
* @var WP_Rollback_Multisite_Compatibility
*/
private $multisite_compatibility;
/**
* Main WP_Rollback Instance
*
* Insures that only one instance of WP Rollback exists in memory at any one
* time. Also prevents needing to define globals all over the place.
*
* @since 1.0
* @static
* @staticvar array $instance
* @return WP_Rollback|null
* @uses WP_Rollback::load_textdomain() load the language files
* @see WP_Rollback()
* @uses WP_Rollback::setup_constants() Set up the constants needed
*/
public static function instance(): ?WP_Rollback {
if ( ! isset( self::$instance ) && ! ( self::$instance instanceof WP_Rollback ) ) {
try {
self::$instance = new WP_Rollback();
self::$instance->setup_constants();
// TODO: Create separate includes method.
include_once WP_ROLLBACK_PLUGIN_DIR . '/src/class-rollback-multisite-compatibility.php';
self::$instance->hooks();
// Only setup plugin rollback on specific page
if ( isset( $_GET['plugin_file'] ) && $_GET['page'] === 'wp-rollback' ) {
self::$instance->setup_plugin_vars();
}
} catch ( Exception $e ) {
// Handle exceptions or log errors
error_log( 'WP_Rollback initialization failed: ' . $e->getMessage() );
return null;
}
}
return self::$instance;
}
/**
* Throw error on object clone
*
* The whole idea of the singleton design pattern is that there is a single
* object therefore, we don't want the object to be cloned.
*
* @since 1.0
* @access protected
* @return void
*/
public function __clone() {
// Cloning instances of the class is forbidden
_doing_it_wrong( __FUNCTION__, __( 'Cheatin’ huh?', 'wp-rollback' ), '1.0' );
}
/**
* Disable unserializing of the class
*
* @since 1.0
* @access protected
* @return void
*/
public function __wakeup() {
// Unserializing instances of the class is forbidden
_doing_it_wrong( __FUNCTION__, __( 'Cheatin’ huh?', 'wp-rollback' ), '1.0' );
}
/**
* Setup plugin constants
*
* @access private
* @since 1.0
* @return void
*/
private function setup_constants(): void {
// Plugin Folder Path
if ( ! defined( 'WP_ROLLBACK_PLUGIN_DIR' ) ) {
define( 'WP_ROLLBACK_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
}
// Plugin Folder URL
if ( ! defined( 'WP_ROLLBACK_PLUGIN_URL' ) ) {
define( 'WP_ROLLBACK_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
}
// Plugin Root File
if ( ! defined( 'WP_ROLLBACK_PLUGIN_FILE' ) ) {
define( 'WP_ROLLBACK_PLUGIN_FILE', __FILE__ );
}
}
/**
* Plugin hooks.
*
* @access private
* @since 1.5
* @return void
*/
private function hooks(): void {
// Multisite compatibility: only loads on main site.
$this->multisite_compatibility = new WP_Rollback_Multisite_Compatibility( $this );
// i18n
add_action( 'plugins_loaded', [ self::$instance, 'load_textdomain' ] );
// Normal WordPress WP-Admin
add_action( 'admin_enqueue_scripts', [ self::$instance, 'scripts' ] );
add_action( 'admin_menu', [ self::$instance, 'admin_menu' ], 20 );
add_action( 'pre_current_active_plugins', [ self::$instance, 'pre_current_active_plugins' ], 20, 1 );
add_action( 'wp_ajax_is_wordpress_theme', [ self::$instance, 'is_wordpress_theme' ] );
add_action( 'set_site_transient_update_themes', [ self::$instance, 'wpr_theme_updates_list' ] );
// REST API
add_action( 'rest_api_init', [ self::$instance, 'register_rest_route' ] );
// Filters
add_filter( 'wp_prepare_themes_for_js', [ self::$instance, 'wpr_prepare_themes_js' ] );
add_filter( 'plugin_action_links', [ self::$instance, 'plugin_action_links' ], 20, 4 );
}
/**
* Enqueue Admin Scripts
*
* @access private
* @since 1.0
*
* @param $hook
*
* @return void
*/
public function scripts( $hook ): void {
// Theme's listing page JS
if ( 'themes.php' === $hook && !is_multisite() ) {
$theme_script_asset = require WP_ROLLBACK_PLUGIN_DIR . '/build/themes.asset.php';
wp_enqueue_script(
'wp-rollback-themes-script',
WP_ROLLBACK_PLUGIN_URL . 'build/themes.js',
$theme_script_asset['dependencies'],
$theme_script_asset['version']
);
// Localize for i18n
wp_localize_script(
'wp-rollback-themes-script', 'wprData', [
'ajaxurl' => admin_url(),
'rollback_nonce' => wp_create_nonce( 'wpr_rollback_nonce' ),
'logo' => plugins_url( 'src/assets/logo.svg', WP_ROLLBACK_PLUGIN_FILE ),
'avatarFallback' => plugins_url( 'src/assets/avatar-plugin-fallback.jpg', WP_ROLLBACK_PLUGIN_FILE ),
'text_rollback_label' => __( 'Rollback', 'wp-rollback' ),
'text_not_rollbackable' => __(
'No Rollback Available: This is a non-WordPress.org theme.',
'wp-rollback'
),
'text_loading_rollback' => __( 'Loading...', 'wp-rollback' ),
]
);
}
if ( ! in_array( $hook, [ 'index_page_wp-rollback', 'dashboard_page_wp-rollback' ] ) ) {
return;
}
$script_asset = require WP_ROLLBACK_PLUGIN_DIR . '/build/admin.asset.php';
wp_enqueue_script( 'updates' );
wp_enqueue_script(
'wp-rollback-plugin-admin-editor',
plugins_url( 'build/admin.js', WP_ROLLBACK_PLUGIN_FILE ),
$script_asset['dependencies'],
$script_asset['version']
);
// For i18n.
wp_set_script_translations( 'wp-rollback-plugin-admin-editor', 'wp-rollback', WP_ROLLBACK_PLUGIN_DIR . 'languages' );
// Localize the script with vars for JS.
wp_localize_script( 'wp-rollback-plugin-admin-editor', 'wprData', [
'rollback_nonce' => wp_create_nonce( 'wpr_rollback_nonce' ),
'restApiNonce' => wp_create_nonce( 'wp_rest' ),
'adminUrl' => admin_url( 'index.php' ),
'restUrl' => esc_url_raw( rest_url() ),
'logo' => plugins_url( 'src/assets/logo.svg', WP_ROLLBACK_PLUGIN_FILE ),
'avatarFallback' => plugins_url( 'src/assets/avatar-plugin-fallback.jpg', WP_ROLLBACK_PLUGIN_FILE ),
'referrer' => wp_get_referer(),
'text_no_changelog_found' => isset( $_GET['plugin_slug'] ) ? sprintf(
// translators: %s Link.
__(
'Sorry, we couldn\'t find a changelog entry found for this version. Try checking the <a href="%s" target="_blank">developer log</a> on WP.org.',
'wp-rollback'
),
'https://wordpress.org/plugins/' . $_GET['plugin_slug'] . '/#developers'
) : '',
'version_missing' => __( 'Please select a version number to perform a rollback.', 'wp-rollback' ),
] );
wp_enqueue_style(
'wp-rollback-plugin-admin',
plugins_url( 'build/admin.css', WP_ROLLBACK_PLUGIN_FILE ),
[ 'wp-components' ],
filemtime( WP_ROLLBACK_PLUGIN_DIR . '/build/admin.css' )
);
}
/**
* Loads the plugin language files
*
* @access public
* @since 1.0
* @return void
*/
public function load_textdomain() {
// Set filter for plugin's languages directory
$wpr_lang_dir = dirname( plugin_basename( WP_ROLLBACK_PLUGIN_FILE ) ) . '/languages/';
$wpr_lang_dir = apply_filters( 'wpr_languages_directory', $wpr_lang_dir );
// Traditional WordPress plugin locale filter
$locale = apply_filters( 'plugin_locale', get_locale(), 'wp-rollback' );
$mofile = sprintf( '%1$s-%2$s.mo', 'wp-rollback', $locale );
// Setup paths to current locale file
$mofile_local = $wpr_lang_dir . $mofile;
$mofile_global = WP_LANG_DIR . '/wp-rollback/' . $mofile;
if ( file_exists( $mofile_global ) ) {
// Look in global /wp-content/languages/wpr folder
load_textdomain( 'wp-rollback', $mofile_global );
} elseif ( file_exists( $mofile_local ) ) {
// Look in local /wp-content/plugins/wpr/languages/ folder
load_textdomain( 'wp-rollback', $mofile_local );
} else {
// Load the default language files
load_plugin_textdomain( 'wp-rollback', false, $wpr_lang_dir );
}
}
public function register_rest_route() {
include WP_ROLLBACK_PLUGIN_DIR . '/src/class-rollback-api-requests.php';
register_rest_route( 'wp-rollback/v1', '/fetch-info/', [
'methods' => 'GET',
'callback' => function ( WP_REST_Request $request ) {
$fetcher = new WP_Rollback_API_Fetcher();
return $fetcher->fetch_plugin_or_theme_info( $request['type'], $request['slug'] );
},
'permission_callback' => function () {
return current_user_can( 'update_plugins' );
},
'args' => [
'type' => [
'required' => true,
'type' => 'string',
],
'slug' => [
'required' => true,
'type' => 'string',
],
],
] );
}
/**
* HTML
*/
public function html(): void {
// Permissions check
if ( ! current_user_can( 'update_plugins' ) ) {
wp_die( __( 'You do not have sufficient permissions to perform rollbacks for this site.', 'wp-rollback' ) );
}
// Get the necessary class
include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
$defaults = apply_filters(
'wpr_rollback_html_args', [
'page' => 'wp-rollback',
'plugin_file' => '',
'action' => '',
'plugin_version' => '',
'plugin' => '',
]
);
$args = wp_parse_args( $_GET, $defaults );
check_admin_referer( 'wpr_rollback_nonce' );
if ( ! empty( $args['plugin_version'] ) ) {
// Plugin: rolling back.
include WP_ROLLBACK_PLUGIN_DIR . '/src/class-rollback-plugin-upgrader.php';
include WP_ROLLBACK_PLUGIN_DIR . '/src/rollback-action.php';
} elseif ( ! empty( $args['theme_version'] ) ) {
// Theme: rolling back.
include WP_ROLLBACK_PLUGIN_DIR . '/src/class-rollback-theme-upgrader.php';
include WP_ROLLBACK_PLUGIN_DIR . '/src/rollback-action.php';
} else {
// Rollback main screen.
echo '<div id="root-wp-rollback-admin"></div>';
}
}
/**
* Admin Menu
*
* Adds a 'hidden' menu item that is activated when the user elects to rollback
*/
public function admin_menu() {
// Only show menu item when necessary (user is interacting with plugin, ie rolling back something)
if ( isset( $_GET['page'] ) && $_GET['page'] === 'wp-rollback' ) {
// Add it in a native WP way, like WP updates do... (a dashboard page)
add_dashboard_page(
__( 'Rollback', 'wp-rollback' ),
__( 'Rollback', 'wp-rollback' ),
'update_plugins',
'wp-rollback',
[ self::$instance, 'html' ]
);
}
}
/**
* Pre-Current Active Plugins
*
* @param $plugins
*
* @return mixed
*/
public function pre_current_active_plugins( $plugins ) {
$updated = $plugins;
foreach ( $updated as $key => $value ) {
$updated[ $key ] = $value;
$updated[ $key ]['rollback'] = true;
}
return $updated;
}
/**
* Setup Variables
*
* @access private
*/
private function setup_plugin_vars() {
if ( ! isset( $_GET['plugin_file'] ) ) {
return false;
}
if ( isset( $_GET['current_version'] ) ) {
$curr_version = explode( ' ', $_GET['current_version'] );
$this->current_version = apply_filters( 'wpr_current_version', $curr_version[0] );
}
include_once ABSPATH . 'wp-admin/includes/plugin.php';
$plugin_file = WP_PLUGIN_DIR . '/' . $_GET['plugin_file'];
if ( ! file_exists( $plugin_file ) ) {
wp_die( 'Plugin you\'re referencing does not exist.' );
}
// the plugin slug is the base directory name without the path to the main file
$plugin_slug = explode( '/', plugin_basename( $plugin_file ) );
$this->plugin_file = apply_filters( 'wpr_plugin_file', $plugin_file );
$this->plugin_slug = apply_filters( 'wpr_plugin_slug', $plugin_slug[0] );
return $plugin_slug;
}
/**
* Plugin Action Links
*
* Adds a "rollback" link into the plugins listing page w/ appropriate query strings
*
* @param $actions
* @param $plugin_file
* @param $plugin_data
* @param $context
*
* @return array $actions
*/
public function plugin_action_links( $actions, $plugin_file, $plugin_data, $context ): array {
if ( is_multisite() && !is_network_admin()) {
return $actions;
}
// Filter for other devs.
$plugin_data = apply_filters( 'wpr_plugin_data', $plugin_data );
// If plugin is missing package data do not output Rollback option.
if ( ! isset( $plugin_data['package'] ) ||
( strpos( $plugin_data['package'], 'downloads.wordpress.org' ) === false ) ) {
return $actions;
}
// Must have version.
if ( ! isset( $plugin_data['Version'] ) ) {
return $actions;
}
// Base rollback URL
$rollback_url = is_network_admin() ? network_admin_url( 'index.php' ) : admin_url( 'index.php' );
$rollback_url = add_query_arg(
apply_filters(
'wpr_plugin_query_args', [
'page' => 'wp-rollback',
'type' => 'plugin',
'plugin_file' => $plugin_file,
'current_version' => urlencode( $plugin_data['Version'] ),
'rollback_name' => urlencode( $plugin_data['Name'] ),
'plugin_slug' => urlencode( $plugin_data['slug'] ),
'_wpnonce' => wp_create_nonce( 'wpr_rollback_nonce' ),
]
),
$rollback_url
);
// Final Output
$actions['rollback'] = apply_filters(
'wpr_plugin_markup',
'<a href="' . esc_url( $rollback_url ) . '">' . __( 'Rollback', 'wp-rollback' ) . '</a>'
);
return apply_filters( 'wpr_plugin_action_links', $actions );
}
/**
* Is WordPress Theme?
*
* Queries the WordPress.org API via theme's slug to see if this theme is on WordPress.
*
* @return bool
*/
public function is_wordpress_theme(): bool {
// Multisite check.
if ( is_multisite() && ( ! is_network_admin() && ! is_main_site() ) ) {
return false;
}
$url = add_query_arg(
'request[slug]',
$_POST['theme'],
'https://api.wordpress.org/themes/info/1.1/?action=theme_information'
);
$wp_api = wp_remote_get( $url );
if ( ! is_wp_error( $wp_api ) ) {
if ( isset( $wp_api['body'] ) && strlen( $wp_api['body'] ) > 0 && $wp_api['body'] !== 'false' ) {
echo 'wp';
} else {
echo 'non-wp';
}
} else {
echo 'error';
}
// Die is required to terminate immediately and return a proper response.
wp_die();
}
/**
* Plugin Row Meta.
*
* @param $plugin_meta
* @param $plugin_file
* @param $plugin_data
* @param $status
*
* @return mixed
*/
public function plugin_row_meta( $plugin_meta, $plugin_file, $plugin_data, $status ) {
return $plugin_meta;
}
/**
* Updates theme list.
*
* @return bool
*/
public function wpr_theme_updates_list(): bool {
include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version
// Bounce out if improperly called.
if ( defined( 'WP_INSTALLING' ) || ! is_admin() ) {
return false;
}
$expiration = 12 * HOUR_IN_SECONDS;
$installed_themes = wp_get_themes();
$last_update = get_site_transient( 'update_themes' );
if ( ! is_object( $last_update ) ) {
set_site_transient( 'rollback_themes', time(), $expiration );
}
$themes = $checked = $request = [];
// Put slug of current theme into request.
$request['active'] = get_option( 'stylesheet' );
foreach ( $installed_themes as $theme ) {
$checked[ $theme->get_stylesheet() ] = $theme->get( 'Version' );
$themes[ $theme->get_stylesheet() ] = [
'Name' => $theme->get( 'Name' ),
'Title' => $theme->get( 'Name' ),
'Version' => '0.0.0.0.0.0',
'Author' => $theme->get( 'Author' ),
'Author URI' => $theme->get( 'AuthorURI' ),
'Template' => $theme->get_template(),
'Stylesheet' => $theme->get_stylesheet(),
];
}
$request['themes'] = $themes;
$timeout = 3 + (int) ( count( $themes ) / 10 );
global $wp_version;
$options = [
'timeout' => $timeout,
'body' => [
'themes' => json_encode( $request ),
],
'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' ),
];
$url = $http_url = 'http://api.wordpress.org/themes/update-check/1.1/';
if ( $ssl = wp_http_supports( [ 'ssl' ] ) ) {
$url = set_url_scheme( $url, 'https' );
}
$raw_response = wp_remote_post( $url, $options );
if ( $ssl && is_wp_error( $raw_response ) ) {
trigger_error(
__(
'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.',
'wp-rollback'
) . ' ' . __(
'(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)',
'wp-rollback'
),
headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE
);
$raw_response = wp_remote_post( $http_url, $options );
}
set_site_transient( 'rollback_themes', time(), $expiration );
if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) ) {
return false;
}
$new_update = new stdClass();
$new_update->last_checked = time();
$new_update->checked = $checked;
$response = json_decode( wp_remote_retrieve_body( $raw_response ), true );
if ( is_array( $response ) && isset( $response['themes'] ) ) {
$new_update->response = $response['themes'];
}
set_site_transient( 'rollback_themes', $new_update );
return true;
}
/**
* Prepare Themes JS.
*
* @param $prepared_themes
*
* @return array
*/
public function wpr_prepare_themes_js( $prepared_themes ): array {
$themes = [];
$rollbacks = [];
$wp_themes = get_site_transient( 'rollback_themes' );
// Double-check our transient is present.
if ( empty( $wp_themes ) || ! is_object( $wp_themes ) ) {
$this->wpr_theme_updates_list();
$wp_themes = get_site_transient( 'rollback_themes' );
}
// Set $rollback response variable for loop ahead.
if ( is_object( $wp_themes ) ) {
$rollbacks = $wp_themes->response;
}
// Loop through themes and provide a 'hasRollback' boolean key for JS.
foreach ( $prepared_themes as $key => $value ) {
$themes[ $key ] = $value;
$themes[ $key ]['hasRollback'] = isset( $rollbacks[ $key ] );
}
return $themes;
}
}
endif; // End if class_exists check
/**
* The main function responsible for returning the one true WP Rollback
* Instance to functions everywhere.
*
* Use this function like you would a global variable, except without needing
* to declare the global.
*
* Example: <?php $wp_rollback = WP_Rollback(); ?>
*
* @since 1.0
* @return WP_Rollback object The one true WP Rollback Instance
*/
function WP_Rollback(): WP_Rollback {
return WP_Rollback::instance();
}
// Get WP Rollback Running
WP_Rollback();