mirror of
https://git.sindominio.net/estibadores/wordpress.git
synced 2024-09-20 07:14:01 +02:00
3468 lines
84 KiB
PHP
3468 lines
84 KiB
PHP
<?php
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/*
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Copyright (C) 2015-20 CERBER TECH INC., https://cerber.tech
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Copyright (C) 2015-20 CERBER TECH INC., https://wpcerber.com
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Licenced under the GNU GPL.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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*========================================================================*
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| ATTENTION! Do not change or edit this file! |
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*========================================================================*
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*/
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if ( ! defined( 'WPINC' ) ) {
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define( 'WPINC', 'wp-includes' );
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}
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define( 'MYSQL_FETCH_OBJECT', 5 );
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define( 'MYSQL_FETCH_OBJECT_K', 6 );
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define( 'CRB_IP_NET_RANGE', '/[^a-f\d\-\.\:\*\/]+/i' );
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define( 'CRB_SANITIZE_ID', '[a-z\d\_\-\.\:\*\/]+' );
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define( 'CRB_SANITIZE_KEY', '/[^a-z_\-\d.:\/]/i' );
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/**
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* Known WP scripts
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* @since 6.0
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*
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*/
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function cerber_get_wp_scripts(){
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$list = array_map( function ( $e ) {
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return '/' . $e;
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}, array( WP_LOGIN_SCRIPT, WP_REG_URI, WP_XMLRPC_SCRIPT, WP_TRACKBACK_SCRIPT, WP_PING_SCRIPT, WP_SIGNUP_SCRIPT, WP_COMMENT_SCRIPT ) );
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return $list;
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}
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/**
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* Return a link (full URL) to a Cerber admin page.
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* Add a particular tab and GET parameters if they are specified
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*
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* @param string $tab Tab on the page
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* @param array $args GET arguments to add to the URL
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* @param bool $add_nonce If true, adds the nonce
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*
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* @return string Full URL
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*/
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function cerber_admin_link( $tab = '', $args = array(), $add_nonce = false ) {
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static $link_base;
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$page = 'cerber-security';
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if ( empty( $args['page'] ) ) {
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if ( in_array( $tab, array( 'antispam', 'captcha' ) ) ) {
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$page = 'cerber-recaptcha';
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}
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elseif ( in_array( $tab, array( 'imex', 'diagnostic', 'license', 'diag-log', 'change-log' ) ) ) {
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$page = 'cerber-tools';
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}
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elseif ( in_array( $tab, array( 'traffic', 'ti_settings' ) ) ) {
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$page = 'cerber-traffic';
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}
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elseif ( in_array( $tab, array( 'user_shield', 'opt_shield' ) ) ) {
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$page = 'cerber-shield';
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}
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elseif ( in_array( $tab, array( 'geo' ) ) ) {
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$page = 'cerber-rules';
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}
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elseif ( in_array( $tab, array( 'role_policies', 'global_policies' ) ) ) {
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$page = 'cerber-users';
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}
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else {
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if ( list( $prefix ) = explode( '_', $tab, 2 ) ) {
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if ( $prefix == 'scan' ) {
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$page = 'cerber-integrity';
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}
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elseif ( $prefix == 'nexus' ) {
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$page = 'cerber-nexus';
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}
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}
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}
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// TODO: look up the page in tabs config
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//$config = cerber_get_admin_page_config();
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}
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else {
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$page = $args['page'];
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unset( $args['page'] );
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}
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if ( ! isset( $link_base ) ) {
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if ( nexus_is_valid_request() ) {
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$base = nexus_request_data()->base;
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}
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else {
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$base = ( ! is_multisite() ) ? admin_url() : network_admin_url();
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}
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$link_base = rtrim( $base, '/' ) . '/admin.php?page=';
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}
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//$link = rtrim( $base, '/' ) . '/admin.php?page=' . $page;
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$link = $link_base . $page;
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if ( $tab ) {
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$link .= '&tab=' . preg_replace( '/[^\w\-]+/', '', $tab );
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}
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if ( $args ) {
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//return add_query_arg(array('record_id'=>$record_id,'mode'=>'view_record'),admin_url('admin.php?page=storage'));
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foreach ( $args as $arg => $value ) {
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$link .= '&' . $arg . '=' . urlencode( $value );
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}
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}
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if ( $add_nonce ) {
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$nonce = wp_create_nonce( 'control' );
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$link .= '&cerber_nonce=' . $nonce;
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}
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return $link;
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}
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/**
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* Return modified link to the currently displaying page
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*
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* @param array $args Arguments to add to the link to the currently displayed page
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* @param bool $preserve Save GET paramaters of the current request
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* @param bool $add_nonce Add Cerber's nonce
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*
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* @return string
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*/
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function cerber_admin_link_add( $args = array(), $preserve = false, $add_nonce = true ) {
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$link = cerber_admin_link( crb_admin_get_tab(), array( 'page' => crb_admin_get_page() ), $add_nonce );
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if ( $preserve ) {
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$get = crb_get_query_params();
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unset( $get['page'], $get['tab'] );
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}
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else {
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$get = array();
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}
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if ( $args ) {
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$get = array_merge( $get, $args );
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}
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if ( $get ) {
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foreach ( $get as $arg => $value ) {
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if ( is_array( $value ) ) {
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foreach ( $value as $key => $val ) {
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$link .= '&' . $arg . '[' . $key . ']=' . urlencode( $val );
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}
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}
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else {
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$link .= '&' . $arg . '=' . urlencode( $value );
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}
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}
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}
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return esc_url( $link );
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}
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/**
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* @param array $set
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*
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* @return string
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*/
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function cerber_activity_link( $set = array() ) {
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static $link;
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if ( ! $link ) {
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$link = cerber_admin_link( 'activity' );
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}
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$filter = '';
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if ( 1 == count( $set ) ) {
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$filter .= '&filter_activity=' . absint( array_shift( $set ) );
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}
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else {
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foreach ( $set as $key => $item ) {
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$filter .= '&filter_activity[' . $key . ']=' . absint( $item );
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}
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}
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return $link . $filter;
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}
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function cerber_traffic_link( $set = array(), $button = true ) {
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$ret = cerber_admin_link( 'traffic', $set );
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if ( $button ) {
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$ret = ' <a class="crb-button-tiny" href="' . $ret . '">' . __( 'Check for requests', 'wp-cerber' ) . '</a>';
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}
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return $ret;
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}
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function cerber_get_login_url(){
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$ret = '';
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if ($path = crb_get_settings( 'loginpath' )) {
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$ret = cerber_get_home_url() . '/' . $path . '/';
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}
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return $ret;
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}
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/**
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* Always includes the path to the current WP installation
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*
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* @since 7.9.4
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*
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* @return string
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*/
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function cerber_get_site_url() {
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static $url;
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if ( isset( $url ) ) {
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return $url;
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}
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$url = trim( get_site_url(), '/' );
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return $url;
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}
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/**
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* Might NOT include the path to the current WP installation in some cases
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* See: https://wordpress.org/support/article/giving-wordpress-its-own-directory/
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*
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* @since 7.9.4
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*
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* @return string
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*/
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function cerber_get_home_url() {
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static $url;
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if ( ! isset( $url ) ) {
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$url = trim( get_home_url(), '/' );
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}
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return $url;
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}
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function cerber_calculate_kpi($period = 1){
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global $wpdb;
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$period = absint( $period );
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if ( ! $period ) {
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$period = 1;
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}
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// TODO: Add spam performance as percentage Denied / Allowed comments
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$stamp = time() - $period * 24 * 3600;
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$in = implode( ',', crb_get_activity_set( 'malicious' ) );
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//$unique_ip = $wpdb->get_var('SELECT COUNT(DISTINCT ip) FROM '. CERBER_LOG_TABLE .' WHERE activity IN ('.$in.') AND stamp > '.$stamp);
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$unique_ip = cerber_db_get_var( 'SELECT COUNT(DISTINCT ip) FROM ' . CERBER_LOG_TABLE . ' WHERE activity IN (' . $in . ') AND stamp > ' . $stamp );
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$kpi_list = array(
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//array( __('Incidents detected','wp-cerber').'</a>', cerber_count_log( array( 16, 40, 50, 51, 52, 53, 54 ) ) ),
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array(
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__( 'Malicious activities mitigated', 'wp-cerber' ) . '</a>',
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cerber_count_log( crb_get_activity_set( 'malicious' ), $period )
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),
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array( __( 'Spam comments denied', 'wp-cerber' ), cerber_count_log( array( 16 ), $period ) ),
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array( __( 'Spam form submissions denied', 'wp-cerber' ), cerber_count_log( array( 17 ), $period ) ),
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array( __( 'Malicious IP addresses detected', 'wp-cerber' ), $unique_ip ),
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array( __( 'Lockouts occurred', 'wp-cerber' ), cerber_count_log( array( 10, 11 ), $period ) ),
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//array( __('Locked out IP now','wp-cerber'), $kpi_locknum ),
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);
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return $kpi_list;
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}
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function cerber_pb_get_devices($token = ''){
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$ret = array();
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if ( ! $token ) {
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if ( ! $token = crb_get_settings( 'pbtoken' ) ) {
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return false;
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}
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}
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$curl = @curl_init();
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if (!$curl) return false;
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$headers = array(
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'Authorization: Bearer ' . $token
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);
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curl_setopt_array($curl, array(
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CURLOPT_URL => 'https://api.pushbullet.com/v2/devices',
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CURLOPT_HTTPHEADER => $headers,
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_CONNECTTIMEOUT => 2,
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CURLOPT_TIMEOUT => 4, // including CURLOPT_CONNECTTIMEOUT
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CURLOPT_DNS_CACHE_TIMEOUT => 4 * 3600,
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));
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$result = @curl_exec($curl);
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$curl_error = curl_error($curl);
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curl_close($curl);
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$response = json_decode( $result, true );
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if ( JSON_ERROR_NONE == json_last_error() && isset( $response['devices'] ) ) {
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foreach ( $response['devices'] as $device ) {
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$ret[ $device['iden'] ] = $device['nickname'];
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}
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}
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else {
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if ($response['error']){
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$e = 'Pushbullet ' . $response['error']['message'];
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}
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elseif ($curl_error){
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$e = $curl_error;
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}
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else $e = 'Unknown cURL error';
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cerber_admin_notice( __( 'ERROR:', 'wp-cerber' ) .' '. $e);
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}
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return $ret;
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}
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/**
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* Send push message via Pushbullet
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*
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* @param $title
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* @param $body
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*
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* @return bool
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*/
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function cerber_pb_send($title, $body){
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if (!$body) return false;
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if ( ! $token = crb_get_settings( 'pbtoken' ) ) {
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return false;
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}
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$params = array('type' => 'note', 'title' => $title, 'body' => $body, 'sender_name' => 'WP Cerber');
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if ($device = crb_get_settings('pbdevice')) {
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if ($device && $device != 'all' && $device != 'N') $params['device_iden'] = $device;
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}
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$headers = array('Access-Token: '.$token,'Content-Type: application/json');
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$curl = @curl_init();
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if (!$curl) return false;
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curl_setopt_array($curl, array(
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CURLOPT_URL => 'https://api.pushbullet.com/v2/pushes',
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CURLOPT_POST => true,
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CURLOPT_HTTPHEADER => $headers,
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CURLOPT_POSTFIELDS => json_encode($params),
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_CONNECTTIMEOUT => 2,
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CURLOPT_TIMEOUT => 4, // including CURLOPT_CONNECTTIMEOUT
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CURLOPT_DNS_CACHE_TIMEOUT => 4 * 3600,
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));
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$result = @curl_exec($curl);
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$curl_error = curl_error($curl);
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curl_close($curl);
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return $curl_error;
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}
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/**
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* Alert admin if something wrong with the website or settings
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*/
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function cerber_check_environment(){
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static $done;
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if ( $done ) {
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return;
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}
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$done = true;
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if ( cerber_get_set( '_check_env', 0, false ) ) {
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return;
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}
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cerber_update_set( '_check_env', 1, 0, false, 300 );
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if ( ! crb_get_settings( 'tienabled' ) ) {
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cerber_admin_notice('Warning: Traffic Inspector is disabled');
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}
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if ( cerber_is_admin_page( false, array( 'page' => 'cerber-shield' ) ) ) {
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if ( CRB_DS::check_errors( $msg ) ) {
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cerber_admin_notice( $msg );
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}
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}
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$ex_list = get_loaded_extensions();
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if ( ! in_array( 'curl', $ex_list ) ) {
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cerber_admin_notice( __( 'ERROR:', 'wp-cerber' ) . ' cURL PHP library is not enabled on this website.' );
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}
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else {
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$curl = @curl_init();
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if ( ! $curl && ( $err_msg = curl_error( $curl ) ) ) {
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cerber_admin_notice( __( 'ERROR:', 'wp-cerber' ) . ' ' . $err_msg );
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}
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curl_close( $curl );
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}
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if ( ! in_array( 'mbstring', $ex_list ) || ! function_exists( 'mb_convert_encoding' ) ) {
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cerber_admin_notice( __( 'ERROR:', 'wp-cerber' ) . ' A PHP extension <b>mbstring</b> is not enabled on this website. Some plugin features will not work properly.
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You need to enable the PHP mbstring extension (multibyte string support) in your hosting control panel.' );
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}
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if ( cerber_get_mode() != crb_get_settings( 'boot-mode' ) ) {
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cerber_admin_notice( __( 'ERROR:', 'wp-cerber' ) . ' ' . 'The plugin is initialized in a different mode that does not match the settings. Check the "Load security engine" setting.' );
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}
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}
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/**
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* Register an issue to be used in the "trouble solving" functionality
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*
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* @param string $code
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* @param string $text
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* @param string $related_setting
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*/
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function cerber_add_issue( $code, $text, $related_setting = '' ) {
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// TODO: implement this reporting feature
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static $issues = array();
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if ( ! isset( $issues[ $code ] ) ) {
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$issues[ $code ] = array( $text, $related_setting );
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if ( is_admin() ) {
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// There will be a separate list of issues that is displayed separately.
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// cerber_admin_notice( __( 'Warning:', 'wp-cerber' ) . ' ' . $text );
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}
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}
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}
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/**
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* Health check-up and self-repairing for vital parts
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*
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*/
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function cerber_watchdog( $full = false ) {
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if ( $full ) {
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cerber_create_db( false );
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cerber_upgrade_db();
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return;
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}
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if ( ! cerber_is_table( CERBER_LOG_TABLE )
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|| ! cerber_is_table( CERBER_BLOCKS_TABLE )
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|| ! cerber_is_table( CERBER_LAB_IP_TABLE )
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) {
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cerber_create_db( false );
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cerber_upgrade_db();
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}
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}
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/**
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* Detect and return remote client IP address
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*
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* @since 6.0
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* @return string Valid IP address
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*/
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function cerber_get_remote_ip() {
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static $remote_ip;
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if ( isset( $remote_ip ) ) {
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return $remote_ip;
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}
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//$options = crb_get_settings();
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if ( defined( 'CERBER_IP_KEY' ) ) {
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$remote_ip = filter_var( $_SERVER[ CERBER_IP_KEY ], FILTER_VALIDATE_IP );
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}
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elseif ( crb_get_settings( 'proxy' ) && isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
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$list = explode( ',', $_SERVER['HTTP_X_FORWARDED_FOR'] );
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foreach ( $list as $maybe_ip ) {
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$remote_ip = filter_var( trim( $maybe_ip ), FILTER_VALIDATE_IP );
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if ( $remote_ip ) {
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break;
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}
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}
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if ( ! $remote_ip && isset( $_SERVER['HTTP_X_REAL_IP'] ) ) {
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$remote_ip = filter_var( $_SERVER['HTTP_X_REAL_IP'], FILTER_VALIDATE_IP );
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}
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}
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else {
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if ( ! empty( $_SERVER['REMOTE_ADDR'] ) ) {
|
|
$remote_ip = $_SERVER['REMOTE_ADDR'];
|
|
}
|
|
elseif ( ! empty( $_SERVER['HTTP_X_REAL_IP'] ) ) {
|
|
$remote_ip = $_SERVER['HTTP_X_REAL_IP'];
|
|
}
|
|
elseif ( ! empty( $_SERVER['HTTP_CLIENT_IP'] ) ) {
|
|
$remote_ip = $_SERVER['HTTP_CLIENT_IP'];
|
|
}
|
|
$remote_ip = filter_var( $remote_ip, FILTER_VALIDATE_IP );
|
|
}
|
|
|
|
if ( ! $remote_ip ) { // including WP-CLI, other way is: if defined('WP_CLI')
|
|
$remote_ip = CERBER_NO_REMOTE_IP;
|
|
}
|
|
|
|
if ( cerber_is_ipv6( $remote_ip ) ) {
|
|
$remote_ip = cerber_ipv6_short( $remote_ip );
|
|
}
|
|
|
|
return $remote_ip;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get ip_id for IP.
|
|
* The ip_id can be safely used for array indexes and in any HTML code
|
|
* @since 2.2
|
|
*
|
|
* @param $ip string IP address
|
|
* @return string ID for given IP
|
|
*/
|
|
function cerber_get_id_ip( $ip ) {
|
|
$ip_id = str_replace( '.', '-', $ip, $count );
|
|
$ip_id = str_replace( ':', '_', $ip_id );
|
|
|
|
return $ip_id;
|
|
}
|
|
/**
|
|
* Get IP from ip_id
|
|
* @since 2.2
|
|
*
|
|
* @param $ip_id string ID for an IP
|
|
*
|
|
* @return string IP address for given ID
|
|
*/
|
|
function cerber_get_ip_id( $ip_id ) {
|
|
$ip = str_replace( '-', '.', $ip_id, $count );
|
|
$ip = str_replace( '_', ':', $ip );
|
|
|
|
return $ip;
|
|
}
|
|
/**
|
|
* Check if given IP address is a valid single IP v4 address
|
|
*
|
|
* @param $ip
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cerber_is_ipv4( $ip ) {
|
|
return ( filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 ) ) ? true : false;
|
|
}
|
|
|
|
function cerber_is_ipv6( $ip ) {
|
|
return ( filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6 ) ) ? true : false;
|
|
}
|
|
|
|
/**
|
|
* Check if a given IP address belongs to a private network (private IP).
|
|
* Universal: support IPv6 and IPv4.
|
|
*
|
|
* @param $ip string An IP address to check
|
|
*
|
|
* @return bool True if IP is in the private range, false otherwise
|
|
*/
|
|
function is_ip_private($ip) {
|
|
|
|
if ( ! filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE ) ) {
|
|
return true;
|
|
}
|
|
elseif ( ! filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_RES_RANGE ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function cerber_is_ip( $ip ) {
|
|
return filter_var( $ip, FILTER_VALIDATE_IP );
|
|
}
|
|
|
|
/**
|
|
* Expands shortened IPv6 to full IPv6 address
|
|
*
|
|
* @param $ip string IPv6 address
|
|
*
|
|
* @return string Full IPv6 address
|
|
*/
|
|
function cerber_ipv6_expand( $ip ) {
|
|
$full_hex = (string) bin2hex( inet_pton( $ip ) );
|
|
|
|
return implode( ':', str_split( $full_hex, 4 ) );
|
|
}
|
|
|
|
/**
|
|
* Compress full IPv6 to shortened
|
|
*
|
|
* @param $ip string IPv6 address
|
|
*
|
|
* @return string Full IPv6 address
|
|
*/
|
|
function cerber_ipv6_short( $ip ) {
|
|
if ( ! filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6 ) ) {
|
|
return $ip;
|
|
}
|
|
|
|
return inet_ntop( inet_pton( $ip ) );
|
|
}
|
|
|
|
/**
|
|
* Convert multilevel object or array of objects to associative array recursively
|
|
*
|
|
* @param $var object|array
|
|
*
|
|
* @return array result of conversion
|
|
* @since 3.0
|
|
*/
|
|
function obj_to_arr_deep( $var ) {
|
|
if ( is_object( $var ) ) {
|
|
$var = get_object_vars( $var );
|
|
}
|
|
if ( is_array( $var ) ) {
|
|
return array_map( __FUNCTION__, $var );
|
|
}
|
|
|
|
return $var;
|
|
}
|
|
|
|
/**
|
|
* Search for a key in the given multidimensional array
|
|
*
|
|
* @param $array
|
|
* @param $needle
|
|
*
|
|
* @return bool
|
|
*/
|
|
function recursive_search_key($array, $needle){
|
|
foreach($array as $key => $value){
|
|
if ((string)$key == (string)$needle){
|
|
return true;
|
|
}
|
|
if(is_array($value)){
|
|
$ret = recursive_search_key($value, $needle);
|
|
if ($ret == true) return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* array_column() implementation for PHP < 5.5
|
|
*
|
|
* @param array $arr Multidimensional array
|
|
* @param string $column Column key
|
|
*
|
|
* @return array
|
|
*/
|
|
function crb_array_column( $arr = array(), $column = '' ) {
|
|
global $x_column;
|
|
$x_column = $column;
|
|
|
|
$ret = array_map( function ( $element ) {
|
|
global $x_column;
|
|
|
|
return $element[ $x_column ];
|
|
}, $arr );
|
|
|
|
$ret = array_values( $ret );
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* @param $arr array
|
|
* @param $key string|integer|array
|
|
* @param $default mixed
|
|
* @param $pattern string REGEX pattern for value validation, UTF is not supported
|
|
*
|
|
* @return mixed
|
|
*/
|
|
function crb_array_get( &$arr, $key, $default = false, $pattern = '' ) {
|
|
if ( is_array( $key ) ) {
|
|
$ret = crb_array_get_deep( $arr, $key );
|
|
if ( $ret === null ) {
|
|
$ret = $default;
|
|
}
|
|
}
|
|
else {
|
|
$ret = ( isset( $arr[ $key ] ) ) ? $arr[ $key ] : $default;
|
|
}
|
|
|
|
if ( ! $pattern ) {
|
|
return $ret;
|
|
}
|
|
|
|
if ( ! is_array( $ret ) ) {
|
|
if ( @preg_match( '/^' . $pattern . '$/i', $ret ) ) {
|
|
return $ret;
|
|
}
|
|
|
|
return $default;
|
|
}
|
|
|
|
global $cerber_temp;
|
|
$cerber_temp = $pattern;
|
|
|
|
array_walk( $ret, function ( &$item ) {
|
|
global $cerber_temp;
|
|
if ( ! @preg_match( '/^' . $cerber_temp . '$/i', $item ) ) {
|
|
$item = '';
|
|
}
|
|
} );
|
|
|
|
return array_filter( $ret );
|
|
}
|
|
|
|
/**
|
|
* Retrieve element from multi-dimensional array
|
|
*
|
|
* @param array $arr
|
|
* @param array $keys Keys (dimensions)
|
|
*
|
|
* @return mixed|null Value of the element if it's defined, null otherwise
|
|
*/
|
|
function crb_array_get_deep( &$arr, $keys ) {
|
|
$key = array_shift( $keys );
|
|
if ( isset( $arr[ $key ] ) ) {
|
|
if ( empty( $keys ) ) {
|
|
return $arr[ $key ];
|
|
}
|
|
|
|
return crb_array_get_deep( $arr[ $key ], $keys );
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Compare two arrays by using keys: check if two arrays have different set of keys
|
|
*
|
|
* @param $arr1 array
|
|
* @param $arr2 array
|
|
*
|
|
* @return bool true if arrays have different set of keys
|
|
*/
|
|
function crb_array_diff_keys( &$arr1, &$arr2 ) {
|
|
if ( count( $arr1 ) != count( $arr2 ) ) {
|
|
return true;
|
|
}
|
|
if ( array_diff_key( $arr1, $arr2 ) ) {
|
|
return true;
|
|
}
|
|
if ( array_diff_key( $arr2, $arr1 ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* @param string|array $val
|
|
*
|
|
* for objects see map_deep();
|
|
*/
|
|
function crb_trim_deep( &$val ) {
|
|
if ( ! is_array( $val ) ) {
|
|
$val = trim( $val );
|
|
}
|
|
|
|
array_walk_recursive( $val, function ( &$v ) {
|
|
$v = trim( $v );
|
|
} );
|
|
}
|
|
|
|
/**
|
|
* @param string|array $val
|
|
*
|
|
* Note: _sanitize_text_fields removes HTML tags
|
|
*
|
|
*/
|
|
function crb_sanitize_deep( &$val ) {
|
|
if ( ! is_array( $val ) ) {
|
|
$val = _sanitize_text_fields( $val, true );
|
|
}
|
|
|
|
array_walk_recursive( $val, function ( &$v ) {
|
|
$v = _sanitize_text_fields( $v, true );
|
|
} );
|
|
}
|
|
|
|
/**
|
|
* Return true if a REST API URL has been requested
|
|
*
|
|
* @return bool
|
|
* @since 3.0
|
|
*/
|
|
function cerber_is_rest_url(){
|
|
global $wp_rewrite;
|
|
static $ret = null;
|
|
|
|
if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) {
|
|
return true;
|
|
}
|
|
|
|
if ( isset( $_REQUEST['rest_route'] ) ) {
|
|
return true;
|
|
}
|
|
|
|
if ( isset( $ret ) ) {
|
|
return $ret;
|
|
}
|
|
|
|
if ( ! $wp_rewrite ) { // see get_rest_url() in the multisite mode
|
|
return false;
|
|
}
|
|
|
|
$ret = false;
|
|
|
|
// @since 8.1
|
|
|
|
$path = CRB_Request::get_request_path();
|
|
|
|
if ( 0 === strpos( $path, '/' . rest_get_url_prefix() . '/' ) ) {
|
|
if ( 0 === strpos( cerber_get_home_url() . $path , crb_get_rest_url() ) ) {
|
|
$ret = true;
|
|
}
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Check if the current query is HTTP and GET method is being
|
|
*
|
|
* @return bool true if request method is GET
|
|
*/
|
|
function cerber_is_http_get() {
|
|
if ( nexus_is_valid_request() ) {
|
|
return ! nexus_request_data()->is_post;
|
|
}
|
|
if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] == 'GET' ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check if the current query is HTTP and POST method is being
|
|
*
|
|
* @return bool true if request method is GET
|
|
*/
|
|
function cerber_is_http_post() {
|
|
if ( nexus_is_valid_request() ) {
|
|
return nexus_request_data()->is_post;
|
|
}
|
|
|
|
if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] == 'POST' ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks if it's a wp cron request
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cerber_is_wp_cron() {
|
|
if ( defined( 'DOING_CRON' ) && DOING_CRON ) {
|
|
return true;
|
|
}
|
|
if ( CRB_Request::is_script( '/wp-cron.php' ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function cerber_is_wp_ajax( $use_filter = false ) {
|
|
if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
|
|
return true;
|
|
}
|
|
|
|
// @since 8.1.3
|
|
if ( $use_filter && function_exists( 'wp_doing_ajax' ) ) {
|
|
return wp_doing_ajax();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param $key string
|
|
* @param $pattern string
|
|
*
|
|
* @return bool|array|string
|
|
*/
|
|
function cerber_get_get( $key, $pattern = '' ) {
|
|
return crb_array_get( $_GET, $key, false, $pattern );
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param $key string
|
|
* @param $pattern string
|
|
*
|
|
* @return bool|array|string
|
|
*/
|
|
function cerber_get_post( $key, $pattern = '' ) {
|
|
return crb_array_get( $_POST, $key, false, $pattern );
|
|
}
|
|
|
|
/**
|
|
* Admin page query params
|
|
*
|
|
* @param string $key
|
|
* @param string $pattern
|
|
*
|
|
* @return mixed
|
|
*/
|
|
function crb_get_query_params( $key = null, $pattern = '' ) {
|
|
if ( nexus_is_valid_request() ) {
|
|
if ( $key ) {
|
|
return crb_array_get( nexus_request_data()->get_params, $key, false, $pattern );
|
|
}
|
|
|
|
return nexus_request_data()->get_params;
|
|
}
|
|
|
|
// Local context
|
|
|
|
if ( $key ) {
|
|
return cerber_get_get( $key, $pattern );
|
|
}
|
|
|
|
return $_GET;
|
|
}
|
|
|
|
function crb_get_post_fields( $key = null, $default = false, $pattern = '' ) {
|
|
if ( nexus_is_valid_request() ) {
|
|
if ( nexus_request_data()->is_post ) {
|
|
return nexus_request_data()->get_post_fields( $key, $default, $pattern );
|
|
}
|
|
|
|
return array();
|
|
}
|
|
|
|
if ( $key ) {
|
|
return crb_array_get( $_POST, $key, $default, $pattern );
|
|
}
|
|
|
|
return $_POST;
|
|
}
|
|
|
|
function crb_get_request_fields() {
|
|
if ( nexus_is_valid_request() ) {
|
|
$ret = nexus_request_data()->get_params;
|
|
if ( nexus_request_data()->is_post ) {
|
|
$ret = array_merge( $ret, nexus_request_data()->get_post_fields() );
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
return $_REQUEST;
|
|
}
|
|
|
|
/**
|
|
* Is requested REST API namespace whitelisted
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cerber_is_route_allowed() {
|
|
|
|
$list = crb_get_settings( 'restwhite' );
|
|
|
|
if ( ! is_array( $list ) || empty( $list ) ) {
|
|
return false;
|
|
}
|
|
|
|
$rest_path = crb_get_rest_path();
|
|
|
|
$namespace = substr( $rest_path, 0, strpos( $rest_path, '/' ) );
|
|
|
|
foreach ( $list as $exception ) {
|
|
if ($exception == $namespace) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
/**
|
|
* Is requested REST API route blocked (not allowed)
|
|
*
|
|
* @return bool
|
|
*/
|
|
/*
|
|
function cerber_is_route_blocked() {
|
|
if ( crb_get_settings( 'norestuser' ) ) {
|
|
$path = explode( '/', crb_get_rest_path() );
|
|
if ( $path && count( $path ) > 2 && $path[0] == 'wp' && $path[2] == 'users' ) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}*/
|
|
|
|
function cerber_is_rest_permitted() {
|
|
$opt = crb_get_settings();
|
|
|
|
if ( ! empty( $opt['norestuser'] ) ) {
|
|
$path = explode( '/', crb_get_rest_path() );
|
|
if ( $path && count( $path ) > 2 && $path[0] == 'wp' && $path[2] == 'users' ) {
|
|
if ( is_super_admin() ) {
|
|
return true; // @since 8.3.4
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
if ( empty( $opt['norest'] ) ) {
|
|
return true;
|
|
}
|
|
|
|
if ( $opt['restauth'] && is_user_logged_in() ) {
|
|
return true;
|
|
}
|
|
|
|
if ( ! empty( $opt['restwhite'] ) || is_array( $opt['restwhite'] ) ) {
|
|
$rest_path = crb_get_rest_path();
|
|
$namespace = substr( $rest_path, 0, strpos( $rest_path, '/' ) );
|
|
foreach ( $opt['restwhite'] as $exception ) {
|
|
if ( $exception == $namespace ) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if ( ! empty( $opt['restroles'] ) || is_array( $opt['restroles'] ) ) {
|
|
if ( cerber_user_has_role( $opt['restroles'] ) ) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check if a user has at least one role from the list
|
|
*
|
|
* @param array $roles
|
|
* @param null $user_id
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cerber_user_has_role( $roles = array(), $user_id = null ) {
|
|
if ( ! $user_id ) {
|
|
$user = wp_get_current_user();
|
|
}
|
|
else {
|
|
$user = get_userdata( $user_id );
|
|
}
|
|
|
|
if ( ! $user || empty( $user->roles ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( ! is_array( $roles ) ) {
|
|
$roles = array( $roles );
|
|
}
|
|
|
|
if ( array_intersect( $user->roles, $roles ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check if all user roles are in the list
|
|
*
|
|
* @param array|string $roles
|
|
* @param int $user_id
|
|
*
|
|
* @return bool false if the user has role(s) other than listed in $roles
|
|
*/
|
|
function crb_user_has_role_strict( $roles, $user_id ) {
|
|
if ( ! $user_id || ! $user = get_userdata( $user_id ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( ! is_array( $roles ) ) {
|
|
$roles = array( $roles );
|
|
}
|
|
|
|
$user_roles = ( is_array( $user->roles ) ) ? $user->roles : array();
|
|
|
|
return ( ! array_diff( $user_roles, $roles ) );
|
|
}
|
|
|
|
function crb_get_rest_path() {
|
|
static $ret;
|
|
if ( isset( $ret ) ) {
|
|
return $ret;
|
|
}
|
|
|
|
if ( isset( $_REQUEST['rest_route'] ) ) {
|
|
$ret = ltrim( $_REQUEST['rest_route'], '/' );
|
|
}
|
|
elseif ( cerber_is_permalink_enabled() ) {
|
|
$path = CRB_Request::get_request_path();
|
|
$pos = strlen( crb_get_rest_url() );
|
|
$ret = substr( cerber_get_home_url() . $path, $pos ); // @since 8.1
|
|
$ret = trim( $ret, '/' );
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function crb_get_rest_url() {
|
|
static $ret;
|
|
|
|
if ( ! isset( $ret ) ) {
|
|
$ret = get_rest_url();
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function crb_is_user_blocked( $uid ) {
|
|
if ( $uid
|
|
&& ( $m = get_user_meta( $uid, CERBER_BUKEY, 1 ) )
|
|
&& ! empty( $m['blocked'] )
|
|
&& $m[ 'u' . $uid ] == $uid ) {
|
|
return $m;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return the last element in the path of the requested URI.
|
|
*
|
|
* @return bool|string
|
|
*/
|
|
function cerber_last_uri() {
|
|
static $ret;
|
|
|
|
if ( isset( $ret ) ) {
|
|
return $ret;
|
|
}
|
|
|
|
$ret = strtolower( $_SERVER['REQUEST_URI'] );
|
|
|
|
if ( $pos = strpos( $ret, '?' ) ) {
|
|
$ret = substr( $ret, 0, $pos );
|
|
}
|
|
|
|
if ( $pos = strpos( $ret, '#' ) ) {
|
|
$ret = substr( $ret, 0, $pos ); // @since 8.1 - malformed request URI
|
|
}
|
|
|
|
$ret = rtrim( $ret, '/' );
|
|
$ret = substr( strrchr( $ret, '/' ), 1 );
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Return the name of an executable script in the requested URI if it's present
|
|
*
|
|
* @return bool|string The script name or false if executable script is not detected
|
|
*/
|
|
function cerber_get_uri_script() {
|
|
static $ret;
|
|
|
|
if ( isset( $ret ) ) {
|
|
return $ret;
|
|
}
|
|
|
|
$last = cerber_last_uri();
|
|
if ( cerber_detect_exec_extension( $last ) ) {
|
|
$ret = $last;
|
|
}
|
|
else {
|
|
$ret = false;
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Detects an executable extension in a filename.
|
|
* Supports double and N fake extensions.
|
|
*
|
|
* @param $line string Filename
|
|
* @param array $extra A list of additional extensions to detect
|
|
*
|
|
* @return bool|string An extension if it's found, false otherwise
|
|
*/
|
|
function cerber_detect_exec_extension( $line, $extra = array() ) {
|
|
static $executable = array( 'php', 'phtm', 'phtml', 'phps', 'shtm', 'shtml', 'jsp', 'asp', 'aspx', 'exe', 'com', 'cgi', 'pl', 'py', 'pyc', 'pyo' );
|
|
static $not_exec = array( 'jpg', 'png', 'svg', 'css', 'txt' );
|
|
|
|
if ( empty( $line ) || ! strrpos( $line, '.' ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( $extra ) {
|
|
$ex_list = array_merge( $executable, $extra );
|
|
}
|
|
else {
|
|
$ex_list = $executable;
|
|
}
|
|
|
|
$line = trim( $line );
|
|
$line = trim( $line, '/' );
|
|
|
|
$parts = explode( '.', $line );
|
|
array_shift( $parts );
|
|
|
|
// First and last are critical for most server environments
|
|
$first_ext = array_shift( $parts );
|
|
$last_ext = array_pop( $parts );
|
|
|
|
if ( $first_ext ) {
|
|
$first_ext = strtolower( $first_ext );
|
|
if ( ! in_array( $first_ext, $not_exec ) ) {
|
|
if ( in_array( $first_ext, $ex_list ) ) {
|
|
return $first_ext;
|
|
}
|
|
if ( preg_match( '/php\d+/', $first_ext ) ) {
|
|
return $first_ext;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( $last_ext ) {
|
|
$last_ext = strtolower( $last_ext );
|
|
if ( in_array( $last_ext, $ex_list ) ) {
|
|
return $last_ext;
|
|
}
|
|
if ( preg_match( '/php\d+/', $last_ext ) ) {
|
|
return $last_ext;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Remove extra slashes \ / from a script file name
|
|
*
|
|
* @return string|bool
|
|
*/
|
|
function cerber_script_filename() {
|
|
return preg_replace('/[\/\\\\]+/','/',$_SERVER['SCRIPT_FILENAME']); // Windows server
|
|
}
|
|
|
|
function cerber_script_exists( $uri ) {
|
|
$script_filename = cerber_script_filename();
|
|
if ( is_multisite() && ! is_subdomain_install() ) {
|
|
$path = explode( '/', $uri );
|
|
if ( count( $path ) > 1 ) {
|
|
$last = array_pop( $path );
|
|
$virtual_sub_folder = array_pop( $path );
|
|
$uri = implode( '/', $path ) . '/' . $last;
|
|
}
|
|
}
|
|
if ( false === strrpos( $script_filename, $uri ) ) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Activity labels and statues
|
|
*
|
|
* @param string $type
|
|
*
|
|
* @return mixed
|
|
*/
|
|
function cerber_get_labels( $type = 'activity' ) {
|
|
|
|
if ( ! $labels = cerber_cache_get( 'labels' ) ) {
|
|
|
|
// Initialize it
|
|
|
|
$labels = array(
|
|
'activity' => array(),
|
|
'status' => array(),
|
|
);
|
|
|
|
$act = &$labels['activity'];
|
|
|
|
// User actions
|
|
$act[1] = __( 'User created', 'wp-cerber' );
|
|
$act[2] = __( 'User registered', 'wp-cerber' );
|
|
$act[5] = __( 'Logged in', 'wp-cerber' );
|
|
$act[6] = __( 'Logged out', 'wp-cerber' );
|
|
$act[7] = __( 'Login failed', 'wp-cerber' );
|
|
|
|
// Cerber actions - IP specific - lockouts
|
|
$act[10] = __( 'IP blocked', 'wp-cerber' );
|
|
$act[11] = __( 'IP subnet blocked', 'wp-cerber' );
|
|
|
|
// Cerber actions - common
|
|
$act[12] = __( 'Citadel activated!', 'wp-cerber' );
|
|
$act[16] = __( 'Spam comment denied', 'wp-cerber' );
|
|
$act[17] = __( 'Spam form submission denied', 'wp-cerber' );
|
|
$act[18] = __( 'Form submission denied', 'wp-cerber' );
|
|
$act[19] = __( 'Comment denied', 'wp-cerber' );
|
|
|
|
// Cerber status now
|
|
//$act[13]=__('Locked out','wp-cerber');
|
|
//$act[14]=__('IP blacklisted','wp-cerber');
|
|
//$act[15]=__('Malicious activity detected','wp-cerber');
|
|
// --------------------------------------------------------------
|
|
|
|
// Other actions
|
|
$act[20] = __( 'Password changed', 'wp-cerber' );
|
|
$act[21] = __( 'Password reset requested', 'wp-cerber' );
|
|
|
|
$act[40] = __( 'reCAPTCHA verification failed', 'wp-cerber' );
|
|
$act[41] = __( 'reCAPTCHA settings are incorrect', 'wp-cerber' );
|
|
$act[42] = __( 'Request to the Google reCAPTCHA service failed', 'wp-cerber' );
|
|
|
|
$act[50] = __( 'Attempt to access prohibited URL', 'wp-cerber' );
|
|
$act[51] = __( 'Attempt to log in with non-existing username', 'wp-cerber' );
|
|
$act[52] = __( 'Attempt to log in with prohibited username', 'wp-cerber' );
|
|
// @since 4.9 // TODO 53 & 54 should be a cerber action?
|
|
$act[53] = __( 'Attempt to log in denied', 'wp-cerber' );
|
|
$act[54] = __( 'Attempt to register denied', 'wp-cerber' );
|
|
$act[55] = __( 'Probing for vulnerable PHP code', 'wp-cerber' );
|
|
$act[56] = __( 'Attempt to upload malicious file denied', 'wp-cerber' );
|
|
$act[57] = __( 'File upload denied', 'wp-cerber' );
|
|
|
|
$act[70] = __( 'Request to REST API denied', 'wp-cerber' );
|
|
$act[71] = __( 'XML-RPC request denied', 'wp-cerber' );
|
|
$act[72] = __( 'User creation denied', 'wp-cerber' );
|
|
$act[73] = __( 'User row update denied', 'wp-cerber' );
|
|
$act[74] = __( 'Role update denied', 'wp-cerber' );
|
|
$act[75] = __( 'Setting update denied', 'wp-cerber' );
|
|
$act[76] = __( 'User metadata update denied', 'wp-cerber' );
|
|
|
|
$act[100] = __( 'Malicious request denied', 'wp-cerber' );
|
|
|
|
// BuddyPress
|
|
$act[200] = __( 'User activated', 'wp-cerber' );
|
|
|
|
// Nexus slave
|
|
$act[300] = __( 'Invalid master credentials', 'wp-cerber' );
|
|
|
|
$act[400] = 'Two-factor authentication enforced';
|
|
|
|
// Statuses
|
|
|
|
$sts = &$labels['status'];
|
|
|
|
$sts[11] = __( 'Bot detected', 'wp-cerber' );
|
|
$sts[12] = __( 'Citadel mode is active', 'wp-cerber' );
|
|
$sts[13] = __( 'Locked out', 'wp-cerber' );
|
|
$sts[13] = __( 'IP address is locked out', 'wp-cerber' );
|
|
$sts[14] = __( 'IP blacklisted', 'wp-cerber' );
|
|
$sts[15] = __( 'Malicious activity detected', 'wp-cerber' );
|
|
$sts[16] = __( 'Blocked by country rule', 'wp-cerber' );
|
|
$sts[17] = __( 'Limit reached', 'wp-cerber' );
|
|
$sts[18] = __( 'Multiple suspicious activities', 'wp-cerber' );
|
|
$sts[19] = __( 'Denied', 'wp-cerber' ); // @since 6.7.5
|
|
|
|
$sts[20] = __( 'Suspicious number of fields', 'wp-cerber' );
|
|
$sts[21] = __( 'Suspicious number of nested values', 'wp-cerber' );
|
|
$sts[22] = __( 'Malicious code detected', 'wp-cerber' );
|
|
$sts[23] = __( 'Suspicious SQL code detected', 'wp-cerber' );
|
|
$sts[24] = __( 'Suspicious JavaScript code detected', 'wp-cerber' );
|
|
$sts[25] = __( 'Blocked by administrator', 'wp-cerber' );
|
|
$sts[26] = __( 'Site policy enforcement', 'wp-cerber' );
|
|
$sts[27] = __( '2FA code verified', 'wp-cerber' );
|
|
$sts[28] = __( 'Initiated by the user', 'wp-cerber' );
|
|
|
|
$sts[30] = 'Username is prohibited';
|
|
$sts[31] = __( 'Email address is not permitted', 'wp-cerber' );
|
|
$sts[32] = 'User role is prohibited';
|
|
$sts[33] = __( 'Permission denied', 'wp-cerber' );
|
|
$sts[34] = 'Unauthorized access denied';
|
|
$sts[35] = __( 'Invalid user', 'wp-cerber' );
|
|
$sts[36] = __( 'Incorrect password', 'wp-cerber' );
|
|
|
|
cerber_cache_set( 'labels', $labels );
|
|
}
|
|
|
|
return $labels[ $type ];
|
|
}
|
|
|
|
function crb_get_activity_set( $slice = 'malicious' ) {
|
|
switch ( $slice ) {
|
|
case 'malicious':
|
|
return array( 10, 11, 16, 17, 40, 50, 51, 52, 53, 54, 55, 56, 100 );
|
|
case 'black': // Like 'malicious' but will cause an IP lockout when hit the limit
|
|
return array( 16, 17, 40, 50, 51, 52, 55, 56, 100, 300 );
|
|
case 'suspicious': // Uses when an admin inspects logs
|
|
return array( 10, 11, 16, 17, 20, 40, 50, 51, 52, 53, 54, 55, 56, 100, 70, 71, 72, 73, 74, 75, 76, 300 );
|
|
case 'dashboard': // Important events for the plugin dashboard
|
|
return array( 1, 2, 5, 10, 11, 12, 16, 17, 18, 19, 40, 41, 42, 50, 51, 52, 53, 54, 55, 56, 72, 73, 74, 75, 76, 100, 300 );
|
|
}
|
|
|
|
return array();
|
|
}
|
|
|
|
|
|
function cerber_get_reason( $reason_id = null ) {
|
|
|
|
if ( ! $labels = cerber_cache_get( 'reasons' ) ) {
|
|
|
|
$labels = array();
|
|
$labels[701] = __( 'Limit on login attempts is reached', 'wp-cerber' );
|
|
$labels[702] = __( 'Attempt to access', 'wp-cerber' );
|
|
$labels[702] = __( 'Attempt to access prohibited URL', 'wp-cerber' );
|
|
$labels[703] = __( 'Attempt to log in with non-existing username', 'wp-cerber' );
|
|
$labels[704] = __( 'Attempt to log in with prohibited username', 'wp-cerber' );
|
|
$labels[705] = __( 'Limit on failed reCAPTCHA verifications is reached', 'wp-cerber' );
|
|
$labels[706] = __( 'Bot activity is detected', 'wp-cerber' );
|
|
$labels[707] = __( 'Multiple suspicious activities were detected', 'wp-cerber' );
|
|
$labels[708] = __( 'Probing for vulnerable PHP code', 'wp-cerber' );
|
|
$labels[709] = __( 'Malicious code detected', 'wp-cerber' );
|
|
$labels[710] = __( 'Attempt to upload a file with malicious code', 'wp-cerber' );
|
|
|
|
$labels[711] = __( 'Multiple erroneous requests', 'wp-cerber' );
|
|
$labels[712] = __( 'Multiple suspicious requests', 'wp-cerber' );
|
|
$labels[721] = 'Limit on 2FA verifications is reached';
|
|
|
|
cerber_cache_set( 'reasons', $labels );
|
|
|
|
}
|
|
|
|
if ( $reason_id ) {
|
|
if ( isset( $labels[ $reason_id ] ) ) {
|
|
return $labels[ $reason_id ];
|
|
}
|
|
|
|
return __( 'Unknown', 'wp-cerber' );
|
|
}
|
|
|
|
return $labels;
|
|
|
|
}
|
|
|
|
function cerber_db_error_log( $msg = null ) {
|
|
global $wpdb;
|
|
if ( ! $msg ) {
|
|
$msg = array( $wpdb->last_error, $wpdb->last_query, date( 'Y-m-d H:i:s' ) );
|
|
}
|
|
$old = get_site_option( '_cerber_db_errors' );
|
|
if ( ! $old ) {
|
|
$old = array();
|
|
}
|
|
update_site_option( '_cerber_db_errors', array_merge( $old, $msg ) );
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param string|array $msg
|
|
*/
|
|
function cerber_admin_notice( $msg ) {
|
|
crb_admin_add_msg( $msg, 'admin_notice' );
|
|
}
|
|
/**
|
|
*
|
|
* @param string|array $msg
|
|
*/
|
|
function cerber_admin_message( $msg ) {
|
|
crb_admin_add_msg( $msg );
|
|
}
|
|
|
|
function crb_admin_add_msg( $msg, $type = 'admin_message' ) {
|
|
global $cerber_doing_upgrade;
|
|
|
|
if ( ! $msg || $cerber_doing_upgrade ) {
|
|
return;
|
|
}
|
|
|
|
if ( ! is_array( $msg ) ) {
|
|
$msg = array( $msg );
|
|
}
|
|
|
|
$set = cerber_get_set( $type );
|
|
|
|
if ( ! $set || ! is_array( $set ) ) {
|
|
$set = array();
|
|
}
|
|
|
|
cerber_update_set( $type, array_merge( $set, $msg ) );
|
|
}
|
|
|
|
function crb_clear_admin_msg(){
|
|
cerber_update_set( 'admin_notice', array() );
|
|
cerber_update_set( 'admin_message', array() );
|
|
}
|
|
|
|
/*
|
|
Check if currently displayed page is a Cerber admin dashboard page with optional checking a set of GET params
|
|
*/
|
|
function cerber_is_admin_page( $force = false, $params = array() ) {
|
|
|
|
if ( ! is_admin()
|
|
&& ! nexus_is_valid_request() ) {
|
|
return false;
|
|
}
|
|
|
|
$get = crb_get_query_params();
|
|
$ret = false;
|
|
|
|
if ( isset( $get['page'] ) && false !== strpos( $get['page'], 'cerber-' ) ) {
|
|
$ret = true;
|
|
if ( $params ) {
|
|
foreach ( $params as $param => $value ) {
|
|
if ( ! isset( $get[ $param ] ) ) {
|
|
$ret = false;
|
|
break;
|
|
}
|
|
if ( ! is_array( $value ) ) {
|
|
if ( $get[ $param ] != $value ) {
|
|
$ret = false;
|
|
break;
|
|
}
|
|
}
|
|
elseif ( ! in_array( $get[ $param ], $value ) ) {
|
|
$ret = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ( $ret || ! $force ) {
|
|
return $ret;
|
|
}
|
|
|
|
if ( ! function_exists( 'get_current_screen' ) || ! $screen = get_current_screen() ) {
|
|
return false;
|
|
}
|
|
|
|
if ( $screen->base == 'plugins' ) {
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
if ($screen->parent_base == 'options-general') return true;
|
|
if ($screen->parent_base == 'settings') return true;
|
|
*/
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return human readable "ago" time
|
|
*
|
|
* @param $time integer Unix timestamp - time of an event
|
|
*
|
|
* @return string
|
|
*/
|
|
function cerber_ago_time( $time ) {
|
|
$diff = (int) abs( time() - $time );
|
|
if ( $diff < MINUTE_IN_SECONDS ) {
|
|
$secs = ( $diff <= 1 ) ? 1 : $diff;
|
|
/* translators: Time difference between two dates, in seconds (sec=second). 1: Number of seconds */
|
|
$dt = sprintf( _n( '%s sec', '%s secs', $secs ), $secs );
|
|
}
|
|
else {
|
|
$dt = human_time_diff( $time );
|
|
}
|
|
|
|
// _x( 'at', 'preposition of time',
|
|
return ( $time <= time() ) ? sprintf( __( '%s ago' ), $dt ) : sprintf( _x( 'in %s', 'preposition of a period of time like: in 6 hours', 'wp-cerber' ), $dt );
|
|
}
|
|
|
|
function cerber_auto_date( $time ) {
|
|
if ( ! $time ) {
|
|
return __( 'Never', 'wp-cerber' );
|
|
}
|
|
return $time < ( time() - DAY_IN_SECONDS ) ? cerber_date( $time ) : cerber_ago_time( $time );
|
|
}
|
|
|
|
/**
|
|
* Format date according to user settings and timezone
|
|
*
|
|
* @param $timestamp int Unix timestamp
|
|
*
|
|
* @return string
|
|
*/
|
|
function cerber_date( $timestamp ) {
|
|
static $gmt_offset;
|
|
|
|
if ( $gmt_offset === null) {
|
|
$gmt_offset = get_option( 'gmt_offset' ) * 3600;
|
|
}
|
|
|
|
$timestamp = absint( $timestamp );
|
|
return date_i18n( cerber_get_dt_format(), $gmt_offset + $timestamp );
|
|
}
|
|
|
|
function cerber_get_dt_format() {
|
|
static $ret;
|
|
|
|
if ( $ret !== null) {
|
|
return $ret;
|
|
}
|
|
|
|
if ( $ret = crb_get_settings( 'dateformat' ) ) {
|
|
return $ret;
|
|
}
|
|
|
|
$tf = get_option( 'time_format' );
|
|
//$tf = str_replace( ' ', ' ', get_option( 'time_format' ) );
|
|
$df = get_option( 'date_format' );
|
|
$ret = $df . ', ' . $tf;
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function cerber_is_ampm() {
|
|
if ( 'a' == strtolower( substr( trim( get_option( 'time_format' ) ), - 1 ) ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function cerber_sec_from_time( $time ) {
|
|
list( $h, $m ) = explode( ':', trim( $time ) );
|
|
$h = absint( $h );
|
|
$m = absint( $m );
|
|
$ret = $h * 3600 + $m * 60;
|
|
|
|
if ( strpos( strtolower( $time ), 'pm' ) ) {
|
|
$ret += 12 * 3600;
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function cerber_percent($one,$two){
|
|
if ($one == 0) {
|
|
if ($two > 0) $ret = '100';
|
|
else $ret = '0';
|
|
}
|
|
else {
|
|
$ret = round (((($two - $one)/$one)) * 100);
|
|
}
|
|
$style='';
|
|
if ($ret < 0) $style='color:#008000';
|
|
elseif ($ret > 0) $style='color:#FF0000';
|
|
if ($ret > 0) $ret = '+'.$ret;
|
|
return '<span style="'.$style.'">'.$ret.' %</span>';
|
|
}
|
|
|
|
function crb_size_format( $fsize ) {
|
|
$fsize = absint( $fsize );
|
|
|
|
return ( $fsize < 1024 ) ? $fsize . ' ' . __( 'Bytes', 'wp-cerber' ) : size_format( $fsize );
|
|
}
|
|
|
|
/**
|
|
* Return a user by login or email with automatic detection
|
|
*
|
|
* @param $login_email string login or email
|
|
*
|
|
* @return false|WP_User
|
|
*/
|
|
function cerber_get_user( $login_email ) {
|
|
if ( is_email( $login_email ) ) {
|
|
return get_user_by( 'email', $login_email );
|
|
}
|
|
|
|
return get_user_by( 'login', $login_email );
|
|
}
|
|
|
|
/**
|
|
* Check if a DB table exists
|
|
*
|
|
* @param $table
|
|
*
|
|
* @return bool true if table exists in the DB
|
|
*/
|
|
function cerber_is_table( $table ) {
|
|
global $wpdb;
|
|
if ( ! $wpdb->get_row( "SHOW TABLES LIKE '" . $table . "'" ) ) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Check if a column is defined in a table
|
|
*
|
|
* @param $table string DB table name
|
|
* @param $column string Field name
|
|
*
|
|
* @return bool true if field exists in a table
|
|
*/
|
|
function cerber_is_column( $table, $column ) {
|
|
|
|
$table = preg_replace( '/[^\w\-]/', '', $table );
|
|
$column = preg_replace( '/[^\w\-]/', '', $column );
|
|
|
|
if ( cerber_db_get_results( 'SHOW FIELDS FROM ' . $table . ' WHERE FIELD = "' . $column . '"' ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check if a table has an index
|
|
*
|
|
* @param $table string DB table name
|
|
* @param $key string Index name
|
|
*
|
|
* @return bool true if an index defined for a table
|
|
*/
|
|
function cerber_is_index( $table, $key ) {
|
|
|
|
$table = preg_replace( '/[^\w\-]/', '', $table );
|
|
$key = preg_replace( '/[^\w\-]/', '', $key );
|
|
|
|
if ( cerber_db_get_results( 'SHOW INDEX FROM ' . $table . ' WHERE KEY_NAME = "' . $key . '"' ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return reCAPTCHA language code for reCAPTCHA widget
|
|
*
|
|
* @return string
|
|
*/
|
|
function cerber_recaptcha_lang() {
|
|
static $lang = '';
|
|
if (!$lang) {
|
|
$lang = crb_get_bloginfo( 'language' );
|
|
//$trans = array('en-US' => 'en', 'de-DE' => 'de');
|
|
//if (isset($trans[$lang])) $lang = $trans[$lang];
|
|
$lang = substr( $lang, 0, 2 );
|
|
}
|
|
|
|
return $lang;
|
|
}
|
|
|
|
/*
|
|
Checks for a new version of WP Cerber and creates messages if needed
|
|
*/
|
|
function cerber_check_for_newer() {
|
|
if ( ! $updates = get_site_transient( 'update_plugins' ) ) {
|
|
return false;
|
|
}
|
|
|
|
$ret = false;
|
|
$key = CERBER_PLUGIN_ID;
|
|
|
|
if ( isset( $updates->checked[ $key ] ) && isset( $updates->response[ $key ] ) ) {
|
|
$old = $updates->checked[ $key ];
|
|
$new = $updates->response[ $key ]->new_version;
|
|
if ( 1 === version_compare( $new, $old ) ) { // current version is lower than latest
|
|
$msg = sprintf( __( 'A new version of %s is available. Please install it.', 'wp-cerber' ), 'WP Cerber Security' );
|
|
$ret = array( 'msg' => $msg, 'ver' => $new );
|
|
}
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Detects known browsers/crawlers and platform in User Agent string
|
|
*
|
|
* @param $ua
|
|
*
|
|
* @return string Sanitized browser name and platform on success
|
|
* @since 6.0
|
|
*/
|
|
function cerber_detect_browser( $ua ) {
|
|
$ua = trim( $ua );
|
|
|
|
if ( empty( $ua ) ) {
|
|
return __( 'Not specified', 'wp-cerber' );
|
|
}
|
|
|
|
if ( preg_match( '/\(compatible\;(.+)\)/i', $ua, $matches ) ) {
|
|
$bot_info = explode( ';', $matches[1] );
|
|
foreach ( $bot_info as $item ) {
|
|
if ( stripos( $item, 'bot' )
|
|
|| stripos( $item, 'crawler' )
|
|
|| stripos( $item, 'spider' )
|
|
|| stripos( $item, 'Yandex' )
|
|
|| stripos( $item, 'Yahoo! Slurp' )
|
|
) {
|
|
if ( strpos( $ua, 'Android' ) ) {
|
|
$item .= ' Mobile';
|
|
}
|
|
return htmlentities( $item );
|
|
}
|
|
}
|
|
}
|
|
elseif ( strpos( $ua, 'google.com' ) ) {
|
|
// Various Google bots
|
|
|
|
$ret = '';
|
|
|
|
if ( false !== strpos( $ua, 'Googlebot' ) ) {
|
|
if ( strpos( $ua, 'Android' ) ) {
|
|
$ret = 'Googlebot Mobile';
|
|
}
|
|
elseif ( false !== strpos( $ua, 'Mozilla' ) ) {
|
|
$ret = 'Googlebot Desktop';
|
|
}
|
|
}
|
|
elseif ( preg_match( '/AdsBot-Google-Mobile|AdsBot-Google|APIs-Google/', $ua, $matches ) ) {
|
|
$ret = $matches[0];
|
|
}
|
|
|
|
if ( $ret ) {
|
|
return htmlentities( $ret );
|
|
}
|
|
else {
|
|
return __( 'Unknown', 'wp-cerber' );
|
|
}
|
|
}
|
|
elseif ( 0 === strpos( $ua, 'Googlebot' ) ) {
|
|
if ( preg_match( '/Googlebot-\w+/', $ua, $matches ) ) {
|
|
return $matches[0];
|
|
}
|
|
}
|
|
elseif ( 0 === strpos( $ua, 'WordPress/' ) ) {
|
|
list( $ret ) = explode( ';', $ua, 2 );
|
|
return htmlentities( $ret );
|
|
}
|
|
elseif ( 0 === strpos( $ua, 'PayPal IPN' ) ) {
|
|
return 'PayPal Payment Notification';
|
|
}
|
|
elseif (0 === strpos( $ua, 'Wget/' )){
|
|
return htmlentities( $ua );
|
|
}
|
|
elseif (0 === strpos( $ua, 'Mediapartners-Google' )){
|
|
return 'AdSense Crawler';
|
|
}
|
|
|
|
|
|
$browsers = array(
|
|
'Firefox' => 'Firefox',
|
|
'OPR' => 'Opera',
|
|
'Opera' => 'Opera',
|
|
'YaBrowser' => 'Yandex Browser',
|
|
'Trident' => 'Internet Explorer',
|
|
'IE' => 'Internet Explorer',
|
|
'Edge' => 'Microsoft Edge',
|
|
'Chrome' => 'Chrome',
|
|
'Safari' => 'Safari',
|
|
'Lynx' => 'Lynx',
|
|
);
|
|
|
|
$systems = array( 'Android' , 'Linux', 'Windows', 'iPhone', 'iPad', 'Macintosh', 'OpenBSD', 'Unix' );
|
|
|
|
$b = '';
|
|
foreach ( $browsers as $browser_id => $browser ) {
|
|
if ( false !== strpos( $ua, $browser_id ) ) {
|
|
$b = $browser;
|
|
break;
|
|
}
|
|
}
|
|
|
|
$s = '';
|
|
foreach ( $systems as $system ) {
|
|
if ( false !== strpos( $ua, $system ) ) {
|
|
$s = $system;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($b == 'Lynx' && !$s) {
|
|
$s = 'Linux';
|
|
}
|
|
|
|
if ( $b && $s ) {
|
|
$ret = $b . ' on ' . $s;
|
|
}
|
|
elseif ( 0 === strpos( $ua, 'python-requests' ) ) {
|
|
$ret = 'Python Script';
|
|
}
|
|
else {
|
|
$ret = __( 'Unknown', 'wp-cerber' );
|
|
}
|
|
|
|
return htmlentities( $ret );
|
|
}
|
|
|
|
/**
|
|
* Is user agent string indicates bot (crawler)
|
|
*
|
|
* @param $ua
|
|
*
|
|
* @return integer 1 if ua string contains a bot definition, 0 otherwise
|
|
* @since 6.0
|
|
*/
|
|
function cerber_is_crawler( $ua ) {
|
|
if ( ! $ua ) {
|
|
return 0;
|
|
}
|
|
$ua = strtolower( $ua );
|
|
if ( preg_match( '/\(compatible\;(.+)\)/', $ua, $matches ) ) {
|
|
$bot_info = explode( ';', $matches[1] );
|
|
foreach ( $bot_info as $item ) {
|
|
if ( strpos( $item, 'bot' )
|
|
|| strpos( $item, 'crawler' )
|
|
|| strpos( $item, 'spider' )
|
|
|| strpos( $item, 'Yahoo! Slurp' )
|
|
) {
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
elseif (0 === strpos( $ua, 'Wget/' )){
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// TODO: remove this and other non-MySQLi stuff
|
|
function cerber_db_use_mysqli() {
|
|
static $mysqli;
|
|
|
|
return true; // @since 8.6.1 Only MySQLi is supported
|
|
|
|
if ( $mysqli === null ) {
|
|
$db = cerber_get_db();
|
|
$mysqli = $db->use_mysqli;
|
|
}
|
|
|
|
return $mysqli;
|
|
}
|
|
|
|
/**
|
|
* Natively escape a string for use in an SQL statement
|
|
* The reason: https://make.wordpress.org/core/2017/10/31/changed-behaviour-of-esc_sql-in-wordpress-4-8-3/
|
|
*
|
|
* @param string $str
|
|
*
|
|
* @return string
|
|
* @since 6.0
|
|
*/
|
|
function cerber_real_escape( $str ) {
|
|
|
|
$str = (string) $str;
|
|
|
|
if ( empty( $str ) ) { // @since 8.4.1
|
|
if ( $str === '0' ) {
|
|
return '0';
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
$db = cerber_get_db();
|
|
|
|
if ( cerber_db_use_mysqli() ) {
|
|
$escaped = mysqli_real_escape_string( $db->dbh, $str );
|
|
}
|
|
else {
|
|
$escaped = mysql_real_escape_string( $str, $db->dbh );
|
|
}
|
|
|
|
return $escaped;
|
|
}
|
|
|
|
function cerber_db_get_errors( $erase = false ) {
|
|
global $cerber_db_errors;
|
|
|
|
if ( ! isset( $cerber_db_errors ) ) {
|
|
$cerber_db_errors = array();
|
|
}
|
|
|
|
if ( ! $erase ) {
|
|
return $cerber_db_errors;
|
|
}
|
|
|
|
$ret = $cerber_db_errors;
|
|
$cerber_db_errors = array();
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Execute generic direct SQL query on the site DB
|
|
*
|
|
* The reason: https://make.wordpress.org/core/2017/10/31/changed-behaviour-of-esc_sql-in-wordpress-4-8-3/
|
|
*
|
|
* @param $query string An SQL query
|
|
*
|
|
* @return bool|mysqli_result|resource
|
|
* @since 6.0
|
|
*/
|
|
function cerber_db_query( $query ) {
|
|
global $cerber_db_errors;
|
|
|
|
$db = cerber_get_db();
|
|
|
|
if ( ! $db ) {
|
|
$cerber_db_errors[] = 'DB ERROR: No active DB handler';
|
|
|
|
return false;
|
|
}
|
|
|
|
if ( cerber_db_use_mysqli() ) {
|
|
//$ret = mysqli_query( $db->dbh, $query, MYSQLI_USE_RESULT );
|
|
$ret = mysqli_query( $db->dbh, $query );
|
|
if ( ! $ret ) {
|
|
$cerber_db_errors[] = mysqli_error( $db->dbh ) . ' for the query: ' . $query;
|
|
}
|
|
}
|
|
else {
|
|
$ret = mysql_query( $query, $db->dbh ); // For compatibility reason only
|
|
if ( ! $ret ) {
|
|
$cerber_db_errors[] = mysql_error( $db->dbh ) . ' for the query: ' . $query; // For compatibility reason only
|
|
}
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function cerber_db_get_results( $query, $type = MYSQLI_ASSOC ) {
|
|
|
|
$ret = array();
|
|
|
|
if ( $result = cerber_db_query( $query ) ) {
|
|
if ( cerber_db_use_mysqli() ) {
|
|
switch ( $type ) {
|
|
case MYSQLI_ASSOC:
|
|
while ( $row = mysqli_fetch_assoc( $result ) ) {
|
|
$ret[] = $row;
|
|
}
|
|
//$ret = mysqli_fetch_all( $result, $type ); // Requires mysqlnd driver
|
|
break;
|
|
case MYSQL_FETCH_OBJECT:
|
|
while ( $row = mysqli_fetch_object( $result ) ) {
|
|
$ret[] = $row;
|
|
}
|
|
break;
|
|
case MYSQL_FETCH_OBJECT_K:
|
|
while ( $row = mysqli_fetch_object( $result ) ) {
|
|
$vars = get_object_vars( $row );
|
|
$key = array_shift( $vars );
|
|
$ret[ $key ] = $row;
|
|
}
|
|
break;
|
|
default:
|
|
while ( $row = mysqli_fetch_row( $result ) ) {
|
|
$ret[] = $row;
|
|
}
|
|
}
|
|
|
|
mysqli_free_result( $result );
|
|
}
|
|
else {
|
|
switch ( $type ) {
|
|
case MYSQL_ASSOC:
|
|
while ( $row = mysql_fetch_assoc( $result ) ) { // For compatibility reason only
|
|
$ret[] = $row;
|
|
}
|
|
break;
|
|
case MYSQL_FETCH_OBJECT:
|
|
while ( $row = mysql_fetch_object( $result ) ) {
|
|
$ret[] = $row;
|
|
}
|
|
break;
|
|
case MYSQL_FETCH_OBJECT_K:
|
|
while ( $row = mysql_fetch_object( $result ) ) {
|
|
$vars = get_object_vars( $row );
|
|
$key = array_shift( $vars );
|
|
$ret[ $key ] = $row;
|
|
}
|
|
break;
|
|
default:
|
|
while ( $row = mysql_fetch_row( $result ) ) {
|
|
$ret[] = $row;
|
|
}
|
|
|
|
}
|
|
|
|
mysql_free_result( $result ); // For compatibility reason only
|
|
}
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function cerber_db_get_row( $query, $type = MYSQLI_ASSOC ) {
|
|
|
|
if ( $result = cerber_db_query( $query ) ) {
|
|
if ( cerber_db_use_mysqli() ) {
|
|
if ( $type == MYSQL_FETCH_OBJECT ) {
|
|
$ret = $result->fetch_object();
|
|
}
|
|
else {
|
|
$ret = $result->fetch_array( $type );
|
|
}
|
|
$result->free();
|
|
}
|
|
else {
|
|
if ( $type == MYSQL_FETCH_OBJECT ) {
|
|
$ret = mysql_fetch_object( $result ); // For compatibility reason only
|
|
}
|
|
else {
|
|
$ret = mysql_fetch_array( $result, MYSQL_ASSOC ); // For compatibility reason only
|
|
}
|
|
mysql_free_result( $result ); // For compatibility reason only
|
|
}
|
|
}
|
|
else {
|
|
$ret = false;
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function cerber_db_get_col( $query ) {
|
|
|
|
$ret = array();
|
|
|
|
if ( $result = cerber_db_query( $query ) ) {
|
|
if ( cerber_db_use_mysqli() ) {
|
|
while ( $row = $result->fetch_row() ) {
|
|
$ret[] = $row[0];
|
|
}
|
|
$result->free();
|
|
}
|
|
else {
|
|
while ( $row = mysql_fetch_row( $result ) ) { // For compatibility reason only
|
|
$ret[] = $row[0];
|
|
}
|
|
mysql_free_result( $result ); // For compatibility reason only
|
|
}
|
|
}
|
|
else {
|
|
$ret = false;
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function cerber_db_get_var( $query ) {
|
|
|
|
if ( $result = cerber_db_query( $query ) ) {
|
|
if ( cerber_db_use_mysqli() ) {
|
|
//$r = $result->fetch_row();
|
|
$r = mysqli_fetch_row( $result );
|
|
$result->free();
|
|
}
|
|
else {
|
|
$r = mysql_fetch_row( $result ); // For compatibility reason only
|
|
mysql_free_result( $result ); // For compatibility reason only
|
|
}
|
|
|
|
if ( $r ) {
|
|
return $r[0];
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function cerber_db_insert( $table, $values ) {
|
|
return cerber_db_query( 'INSERT INTO ' . $table . ' (' . implode( ',', array_keys( $values ) ) . ') VALUES (' . implode( ',', $values ) . ')' );
|
|
}
|
|
|
|
/**
|
|
* @return bool|wpdb
|
|
*/
|
|
function cerber_get_db() {
|
|
global $wpdb, $cerber_db_errors;
|
|
static $db;
|
|
|
|
if ( ! isset( $cerber_db_errors ) ) {
|
|
$cerber_db_errors = array();
|
|
}
|
|
|
|
//if ( ! isset( $db ) || ! is_object( $db ) ) {
|
|
if ( ! isset( $db ) || empty( $db->dbh ) ) {
|
|
// Check for connected DB handler
|
|
if ( ! is_object( $wpdb ) || empty( $wpdb->dbh ) ) {
|
|
if ( ! $db = cerber_db_connect() ) {
|
|
$cerber_db_errors[] = 'Unable to connect to the DB';
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
$db = $wpdb;
|
|
}
|
|
}
|
|
|
|
return $db;
|
|
}
|
|
|
|
function cerber_get_db_prefix() {
|
|
global $wpdb;
|
|
static $prefix = null;
|
|
if ( $prefix === null ) {
|
|
$prefix = $wpdb->base_prefix;
|
|
}
|
|
|
|
return $prefix;
|
|
}
|
|
|
|
/**
|
|
* Create a WP DB handler
|
|
*
|
|
* @return bool|wpdb
|
|
*/
|
|
function cerber_db_connect() {
|
|
if ( ! defined( 'CRB_ABSPATH' ) ) {
|
|
define( 'CRB_ABSPATH', cerber_dirname( __FILE__, 4 ) );
|
|
}
|
|
$db_class = CRB_ABSPATH . '/' . WPINC . '/wp-db.php';
|
|
$wp_config = CRB_ABSPATH . '/wp-config.php';
|
|
if ( file_exists( $db_class ) && $config = file_get_contents( $wp_config ) ) {
|
|
$config = str_replace( '<?php', '', $config );
|
|
$config = str_replace( '?>', '', $config );
|
|
ob_start();
|
|
@eval( $config ); // This eval is OK. Getting site DB connection parameters.
|
|
ob_end_clean();
|
|
if ( defined( 'DB_USER' ) && defined( 'DB_PASSWORD' ) && defined( 'DB_NAME' ) && defined( 'DB_HOST' ) ) {
|
|
require_once( $db_class );
|
|
|
|
return new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST );
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function crb_get_mysql_var( $var ) {
|
|
static $cache;
|
|
if ( ! isset( $cache[ $var ] ) ) {
|
|
if ( $v = cerber_db_get_row( 'SHOW VARIABLES LIKE "' . $var . '"' ) ) {
|
|
$cache[ $var ] = $v['Value'];
|
|
}
|
|
else {
|
|
$cache[ $var ] = false;
|
|
}
|
|
}
|
|
|
|
return $cache[ $var ];
|
|
}
|
|
|
|
/**
|
|
* Retrieve a value from the key-value storage
|
|
*
|
|
* @param string $key
|
|
* @param integer $id
|
|
* @param bool $unserialize
|
|
* @param bool $use_cache
|
|
*
|
|
* @return bool|array
|
|
*/
|
|
function cerber_get_set( $key, $id = null, $unserialize = true, $use_cache = null ) {
|
|
if ( ! $key ) {
|
|
return false;
|
|
}
|
|
|
|
$key = preg_replace( CRB_SANITIZE_KEY, '', $key );
|
|
$cache_key = 'crb#' . $key . '#';
|
|
|
|
$id = ( $id !== null ) ? absint( $id ) : 0;
|
|
$cache_key .= $id;
|
|
|
|
$ret = false;
|
|
|
|
$use_cache = ( isset( $use_cache ) ) ? $use_cache : cerber_cache_is_enabled();
|
|
|
|
if ( $use_cache ) {
|
|
$cache_value = cerber_cache_get( $cache_key, null );
|
|
if ( $cache_value !== null ) {
|
|
return $cache_value;
|
|
}
|
|
}
|
|
|
|
if ( $row = cerber_db_get_row( 'SELECT * FROM ' . cerber_get_db_prefix() . CERBER_SETS_TABLE . ' WHERE the_key = "' . $key . '" AND the_id = ' . $id ) ) {
|
|
if ( $row['expires'] > 0 && $row['expires'] < time() ) {
|
|
cerber_delete_set( $key, $id );
|
|
if ( $use_cache ) {
|
|
cerber_cache_delete( $cache_key );
|
|
}
|
|
return false;
|
|
}
|
|
if ( $unserialize ) {
|
|
if ( ! empty( $row['the_value'] ) ) {
|
|
$ret = unserialize( $row['the_value'] );
|
|
}
|
|
else {
|
|
$ret = array();
|
|
}
|
|
}
|
|
else {
|
|
$ret = $row['the_value'];
|
|
}
|
|
}
|
|
|
|
if ( $use_cache ) {
|
|
cerber_cache_set( $cache_key, $ret );
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Update/insert value to the key-value storage
|
|
*
|
|
* @param string $key A unique key for the data set
|
|
* @param $value
|
|
* @param integer $id An additional numerical key
|
|
* @param bool $serialize
|
|
* @param integer $expires Unix timestamp (UTC) when this element will be deleted
|
|
* @param bool $use_cache
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cerber_update_set( $key, $value, $id = null, $serialize = true, $expires = null, $use_cache = null ) {
|
|
|
|
if ( ! $key ) {
|
|
return false;
|
|
}
|
|
|
|
$key = preg_replace( CRB_SANITIZE_KEY, '', $key );
|
|
$cache_key = 'crb#' . $key . '#';
|
|
|
|
$expires = ( $expires !== null ) ? absint( $expires ) : 0;
|
|
|
|
$id = ( $id !== null ) ? absint( $id ) : 0;
|
|
$cache_key .= $id;
|
|
|
|
$use_cache = ( isset( $use_cache ) ) ? $use_cache : cerber_cache_is_enabled();
|
|
|
|
if ( $use_cache ) {
|
|
cerber_cache_set( $cache_key, $value, $expires - time() );
|
|
}
|
|
|
|
if ( $serialize ) {
|
|
$value = serialize( $value );
|
|
}
|
|
|
|
$value = cerber_real_escape( $value );
|
|
|
|
if ( false !== cerber_get_set( $key, $id, false, false ) ) {
|
|
$sql = 'UPDATE ' . cerber_get_db_prefix() . CERBER_SETS_TABLE . ' SET the_value = "' . $value . '", expires = ' . $expires . ' WHERE the_key = "' . $key . '" AND the_id = ' . $id;
|
|
}
|
|
else {
|
|
$sql = 'INSERT INTO ' . cerber_get_db_prefix() . CERBER_SETS_TABLE . ' (the_key, the_id, the_value, expires) VALUES ("' . $key . '",' . $id . ',"' . $value . '",' . $expires . ')';
|
|
}
|
|
|
|
unset( $value );
|
|
|
|
if ( cerber_db_query( $sql ) ) {
|
|
return true;
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete value from the storage
|
|
*
|
|
* @param string $key
|
|
* @param integer $id
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cerber_delete_set( $key, $id = null) {
|
|
|
|
$key = preg_replace( CRB_SANITIZE_KEY, '', $key );
|
|
$cache_key = 'crb#' . $key . '#';
|
|
|
|
$id = ( $id !== null ) ? absint( $id ) : 0;
|
|
$cache_key .= $id;
|
|
|
|
cerber_cache_delete( $cache_key );
|
|
|
|
if ( cerber_db_query( 'DELETE FROM ' . cerber_get_db_prefix() . CERBER_SETS_TABLE . ' WHERE the_key = "' . $key . '" AND the_id = ' . $id ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Clean up all expired sets. Usually by cron.
|
|
* @param bool $all if true, deletes all sets that has expiration
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cerber_delete_expired_set( $all = false ) {
|
|
if ( ! $all ) {
|
|
$where = 'expires > 0 AND expires < ' . time();
|
|
}
|
|
else {
|
|
$where = 'expires > 0';
|
|
}
|
|
if ( cerber_db_query( 'DELETE FROM ' . cerber_get_db_prefix() . CERBER_SETS_TABLE . ' WHERE ' . $where ) ) {
|
|
return true;
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove comments from a given piece of code
|
|
*
|
|
* @param string $string
|
|
*
|
|
* @return mixed
|
|
*/
|
|
function cerber_remove_comments( $string = '' ) {
|
|
return preg_replace( '/#.*/', '', preg_replace( '#//.*#', '', preg_replace( '#/\*(?:[^*]*(?:\*(?!/))*)*\*/#', '', $string ) ) );
|
|
}
|
|
|
|
/**
|
|
* Set Cerber Groove to logged in user browser
|
|
*
|
|
* @param $expire
|
|
*/
|
|
function cerber_set_groove( $expire ) {
|
|
if ( ! headers_sent() ) {
|
|
cerber_set_cookie( 'cerber_groove', md5( cerber_get_groove() ), $expire + 1 );
|
|
|
|
$groove_x = cerber_get_groove_x();
|
|
cerber_set_cookie( 'cerber_groove_x_'.$groove_x[0], $groove_x[1], $expire + 1 );
|
|
}
|
|
}
|
|
|
|
/*
|
|
Get the special Cerber Sign for using with cookies
|
|
*/
|
|
function cerber_get_groove() {
|
|
$groove = cerber_get_site_option( 'cerber-groove', false );
|
|
|
|
if ( empty( $groove ) ) {
|
|
//$groove = wp_generate_password( 16, false );
|
|
$groove = substr( str_shuffle( '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' ), 0, 16 );
|
|
update_site_option( 'cerber-groove', $groove );
|
|
}
|
|
|
|
return $groove;
|
|
}
|
|
|
|
/*
|
|
Check if the special Cerber Sign valid
|
|
*/
|
|
function cerber_check_groove( $hash = '' ) {
|
|
if ( ! $hash ) {
|
|
if ( ! $hash = cerber_get_cookie( 'cerber_groove' ) ) {
|
|
return false;
|
|
}
|
|
}
|
|
$groove = cerber_get_groove();
|
|
if ( $hash == md5( $groove ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @since 7.0
|
|
*/
|
|
function cerber_check_groove_x() {
|
|
$groove_x = cerber_get_groove_x();
|
|
if ( cerber_get_cookie( 'cerber_groove_x_' . $groove_x[0] ) == $groove_x[1] ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
Get the special public Cerber Sign for using with cookies
|
|
*/
|
|
function cerber_get_groove_x( $regenerate = false ) {
|
|
$groove_x = array();
|
|
|
|
if ( ! $regenerate ) {
|
|
$groove_x = cerber_get_site_option( 'cerber-groove-x' );
|
|
}
|
|
|
|
if ( $regenerate || empty( $groove_x ) ) {
|
|
$groove_0 = substr( str_shuffle( '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' ), 0, rand( 24, 32 ) );
|
|
$groove_1 = substr( str_shuffle( '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' ), 0, rand( 24, 32 ) );
|
|
$groove_x = array( $groove_0, $groove_1 );
|
|
update_site_option( 'cerber-groove-x', $groove_x );
|
|
crb_update_cookie_dependent();
|
|
}
|
|
|
|
return $groove_x;
|
|
}
|
|
|
|
function cerber_get_cookie_path(){
|
|
if ( defined( 'COOKIEPATH' ) ) {
|
|
return COOKIEPATH;
|
|
}
|
|
|
|
return '/';
|
|
}
|
|
|
|
function cerber_set_cookie( $name, $value, $expire = 0, $path = "", $domain = "", $secure = false, $httponly = false ) {
|
|
if ( cerber_is_wp_cron() ) {
|
|
return;
|
|
}
|
|
if ( ! $path ) {
|
|
$path = cerber_get_cookie_path();
|
|
}
|
|
|
|
$expire = absint( $expire );
|
|
$expire = ( $expire > 43009401600 ) ? 43009401600 : $expire;
|
|
|
|
setcookie( cerber_get_cookie_prefix() . $name, $value, $expire, $path, $domain, $secure, $httponly );
|
|
}
|
|
|
|
/**
|
|
* @param $name
|
|
* @param bool $default
|
|
*
|
|
* @return string|boolean value of the cookie, false if the cookie is not set
|
|
*/
|
|
function cerber_get_cookie( $name, $default = false ) {
|
|
return crb_array_get( $_COOKIE, cerber_get_cookie_prefix() . $name, $default );
|
|
}
|
|
|
|
function cerber_get_cookie_prefix() {
|
|
/*
|
|
if ( defined( 'CERBER_COOKIE_PREFIX' )
|
|
&& is_string( CERBER_COOKIE_PREFIX )
|
|
&& preg_match( '/^\w+$/', CERBER_COOKIE_PREFIX ) ) {
|
|
return CERBER_COOKIE_PREFIX;
|
|
}*/
|
|
if ( $p = crb_get_settings( 'cookiepref' ) ) {
|
|
return $p;
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
function crb_update_cookie_dependent() {
|
|
static $done = false;
|
|
|
|
if ( $done ) {
|
|
return;
|
|
}
|
|
|
|
//add_action( 'init', function () {
|
|
register_shutdown_function( function () {
|
|
cerber_htaccess_sync( 'main' ); // keep the .htaccess rule is up to date
|
|
} );
|
|
|
|
$done = true;
|
|
}
|
|
|
|
/**
|
|
* Synchronize plugin settings with rules in the .htaccess file
|
|
*
|
|
* @param $file string
|
|
* @param $settings array
|
|
*
|
|
* @return bool|string|WP_Error
|
|
*/
|
|
function cerber_htaccess_sync( $file, $settings = array() ) {
|
|
|
|
if ( ! $settings ) {
|
|
$settings = crb_get_settings();
|
|
}
|
|
|
|
if ( 'main' == $file ) {
|
|
$rules = array();
|
|
if ( ! empty( $settings['adminphp'] ) && ( ! defined( 'CONCATENATE_SCRIPTS' ) || ! CONCATENATE_SCRIPTS ) ) {
|
|
// https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6389
|
|
if ( ! apache_mod_loaded( 'mod_rewrite', true ) ) {
|
|
cerber_add_issue( 'no_mod', 'The Apache mod_rewrite module is not enabled on your web server. Ask your server administrator for assistance.', 'adminphp' );
|
|
return new WP_Error( 'no_mod', 'The Apache mod_rewrite module is not enabled on your web server. Ask your server administrator for assistance.' );
|
|
}
|
|
$groove_x = cerber_get_groove_x();
|
|
$cookie = cerber_get_cookie_prefix() . 'cerber_groove_x_' . $groove_x[0];
|
|
$rules [] = '# Protection of admin scripts is enabled (CVE-2018-6389)';
|
|
$rules [] = '<IfModule mod_rewrite.c>';
|
|
$rules [] = 'RewriteEngine On';
|
|
$rules [] = 'RewriteBase /';
|
|
$rules [] = 'RewriteCond %{REQUEST_URI} ^(.*)wp-admin/+load-scripts\.php$ [OR,NC]'; // @updated 8.1
|
|
$rules [] = 'RewriteCond %{REQUEST_URI} ^(.*)wp-admin/+load-styles\.php$ [NC]'; // @updated 8.1
|
|
$rules [] = 'RewriteCond %{HTTP_COOKIE} !' . $cookie . '=' . $groove_x[1];
|
|
$rules [] = 'RewriteRule (.*) - [R=403,L]';
|
|
$rules [] = '</IfModule>';
|
|
}
|
|
|
|
return cerber_update_htaccess( $file, $rules );
|
|
}
|
|
|
|
if ( 'media' == $file ) {
|
|
/*if ( ! crb_is_php_mod() ) {
|
|
return 'ERROR: The Apache PHP module mod_php is not active.';
|
|
}*/
|
|
$rules = array();
|
|
if ( ! empty( $settings['phpnoupl'] ) ) {
|
|
|
|
$rules [] = '<Files *>';
|
|
$rules [] = 'SetHandler none';
|
|
$rules [] = 'SetHandler default-handler';
|
|
$rules [] = 'Options -ExecCGI';
|
|
$rules [] = 'RemoveHandler .cgi .php .php3 .php4 .php5 .php7 .phtml .pl .py .pyc .pyo';
|
|
$rules [] = '</Files>';
|
|
|
|
$rules [] = '<IfModule mod_php7.c>';
|
|
$rules [] = 'php_flag engine off';
|
|
$rules [] = '</IfModule>';
|
|
$rules [] = '<IfModule mod_php5.c>';
|
|
$rules [] = 'php_flag engine off';
|
|
$rules [] = '</IfModule>';
|
|
}
|
|
|
|
return cerber_update_htaccess( $file, $rules );
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Remove Cerber rules from the .htaccess file
|
|
*
|
|
*/
|
|
function cerber_htaccess_clean_up() {
|
|
cerber_update_htaccess( 'main', array() );
|
|
cerber_update_htaccess( 'media', array() );
|
|
}
|
|
|
|
/**
|
|
* Update the .htaccess file
|
|
*
|
|
* @param $file
|
|
* @param array $rules A set of rules (array of strings) for the section. If empty, the section will be cleaned.
|
|
*
|
|
* @return bool|string|WP_Error True on success, string with error message on failure
|
|
*/
|
|
function cerber_update_htaccess( $file, $rules = array() ) {
|
|
if ( $file == 'main' ) {
|
|
$htaccess = cerber_get_htaccess_file();
|
|
$marker = CERBER_MARKER1;
|
|
}
|
|
elseif ( $file == 'media' ) {
|
|
$htaccess = cerber_get_upload_dir() . '/.htaccess';
|
|
$marker = CERBER_MARKER2;
|
|
}
|
|
else {
|
|
return '???';
|
|
}
|
|
|
|
if ( ! is_file( $htaccess ) ) {
|
|
if ( ! touch( $htaccess ) ) {
|
|
return new WP_Error( 'htaccess-io', 'ERROR: Unable to create the file ' . $htaccess);
|
|
}
|
|
}
|
|
elseif ( ! is_writable( $htaccess ) ) {
|
|
return new WP_Error( 'htaccess-io', 'ERROR: Unable to get access to the file ' . $htaccess);
|
|
}
|
|
|
|
$result = crb_insert_with_markers( $htaccess, $marker, $rules );
|
|
|
|
if ( $result || $result === 0 ) {
|
|
$result = 'The ' . $htaccess . ' file has been updated';
|
|
}
|
|
else {
|
|
$result = new WP_Error( 'htaccess-io', 'ERROR: Unable to modify the file ' . $htaccess);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Return .htaccess filename with full path
|
|
*
|
|
* @return bool|string full filename if the file can be written, false otherwise
|
|
*/
|
|
function cerber_get_htaccess_file() {
|
|
require_once( ABSPATH . 'wp-admin/includes/file.php' );
|
|
$home_path = get_home_path();
|
|
return $home_path . '.htaccess';
|
|
}
|
|
|
|
/**
|
|
* Check if the remote domain match mask
|
|
*
|
|
* @param $domain_mask array|string Mask(s) to check remote domain against
|
|
*
|
|
* @return bool True if hostname match at least one domain from the list
|
|
*/
|
|
function cerber_check_remote_domain( $domain_mask ) {
|
|
|
|
$hostname = @gethostbyaddr( cerber_get_remote_ip() );
|
|
|
|
if ( ! $hostname || filter_var( $hostname, FILTER_VALIDATE_IP ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( ! is_array( $domain_mask ) ) {
|
|
$domain_mask = array( $domain_mask );
|
|
}
|
|
|
|
foreach ( $domain_mask as $mask ) {
|
|
|
|
if ( substr_count( $mask, '.' ) != substr_count( $hostname, '.' ) ) {
|
|
continue;
|
|
}
|
|
|
|
$parts = array_reverse( explode( '.', $hostname ) );
|
|
|
|
$ok = true;
|
|
|
|
foreach ( array_reverse( explode( '.', $mask ) ) as $i => $item ) {
|
|
if ( $item != '*' && $item != $parts[ $i ] ) {
|
|
$ok = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( $ok == true ) {
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Prepare files (install/deinstall) for different boot modes
|
|
*
|
|
* @param $mode int A plugin boot mode
|
|
* @param $old_mode int
|
|
*
|
|
* @return bool|WP_Error
|
|
* @since 6.3
|
|
*/
|
|
function cerber_set_boot_mode( $mode = null, $old_mode = null ) {
|
|
if ( $mode === null ) {
|
|
$mode = crb_get_settings( 'boot-mode' );
|
|
}
|
|
$source = dirname( cerber_plugin_file() ) . '/modules/aaa-wp-cerber.php';
|
|
$target = WPMU_PLUGIN_DIR . '/aaa-wp-cerber.php';
|
|
if ( $mode == 1 ) {
|
|
if ( file_exists( $target ) ) {
|
|
if ( sha1_file( $source, true ) == sha1_file( $target, true ) ) {
|
|
return true;
|
|
}
|
|
}
|
|
if ( ! is_dir( WPMU_PLUGIN_DIR ) ) {
|
|
if ( ! mkdir( WPMU_PLUGIN_DIR, 0755, true ) ) {
|
|
// TODO: try to set permissions for the parent folder
|
|
return new WP_Error( 'cerber-boot', __( 'Unable to create the directory', 'wp-cerber' ) . ' ' . WPMU_PLUGIN_DIR );
|
|
}
|
|
}
|
|
if ( ! copy( $source, $target ) ) {
|
|
if ( ! wp_is_writable( WPMU_PLUGIN_DIR ) ) {
|
|
return new WP_Error( 'cerber-boot', __( 'Destination folder access denied', 'wp-cerber' ) . ' ' . WPMU_PLUGIN_DIR );
|
|
}
|
|
elseif ( ! file_exists( $source ) ) {
|
|
return new WP_Error( 'cerber-boot', __( 'File not found', 'wp-cerber' ) . ' ' . $source );
|
|
}
|
|
|
|
return new WP_Error( 'cerber-boot', __( 'Unable to copy the file', 'wp-cerber' ) . ' ' . $source . ' to the folder ' . WPMU_PLUGIN_DIR );
|
|
}
|
|
}
|
|
else {
|
|
if ( file_exists( $target ) ) {
|
|
if ( ! unlink( $target ) ) {
|
|
return new WP_Error( 'cerber-boot', __( 'Unable to delete the file', 'wp-cerber' ) . ' ' . $target );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* How the plugin was loaded (initialized)
|
|
*
|
|
* @return int
|
|
* @since 6.3
|
|
*/
|
|
function cerber_get_mode() {
|
|
if ( function_exists( 'cerber_mode' ) && defined( 'CERBER_MODE' ) ) {
|
|
return cerber_mode();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
function cerber_is_permalink_enabled() {
|
|
static $ret;
|
|
|
|
if ( isset( $ret ) ) {
|
|
return $ret;
|
|
}
|
|
|
|
$ret = ( get_option( 'permalink_structure' ) ) ? true : false;
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Given the path of a file or directory, this function
|
|
* will return the parent directory's path that is given levels up
|
|
*
|
|
* @param string $path
|
|
* @param integer $levels
|
|
*
|
|
* @return string Parent directory's path
|
|
*/
|
|
function cerber_dirname( $path, $levels = 1 ) {
|
|
|
|
if ( PHP_VERSION_ID >= 70000 || $levels == 1 ) {
|
|
return dirname( $path, $levels );
|
|
}
|
|
|
|
$ret = '.';
|
|
|
|
$path = explode( DIRECTORY_SEPARATOR, str_replace( array( '/', '\\' ), DIRECTORY_SEPARATOR, $path ) );
|
|
if ( 0 < ( count( $path ) - $levels ) ) {
|
|
$path = array_slice( $path, 0, count( $path ) - $levels );
|
|
$ret = implode( DIRECTORY_SEPARATOR, $path );
|
|
}
|
|
|
|
return $ret;
|
|
|
|
}
|
|
|
|
// Return an unmodified $wp_version variable
|
|
function cerber_get_wp_version() {
|
|
static $v;
|
|
if ( ! $v ) {
|
|
global $wp_version;
|
|
include_once( ABSPATH . WPINC . DIRECTORY_SEPARATOR . 'version.php' );
|
|
$v = $wp_version;
|
|
}
|
|
|
|
return $v;
|
|
}
|
|
|
|
function crb_get_themes() {
|
|
|
|
static $theme_headers = array(
|
|
'Name' => 'Theme Name',
|
|
'ThemeURI' => 'Theme URI',
|
|
'Description' => 'Description',
|
|
'Author' => 'Author',
|
|
'AuthorURI' => 'Author URI',
|
|
'Version' => 'Version',
|
|
'Template' => 'Template',
|
|
'Status' => 'Status',
|
|
'Tags' => 'Tags',
|
|
'TextDomain' => 'Text Domain',
|
|
'DomainPath' => 'Domain Path',
|
|
);
|
|
|
|
$themes = array();
|
|
|
|
if ( $list = search_theme_directories() ) {
|
|
foreach ( $list as $key => $info ) {
|
|
$css = $info['theme_root'] . '/' . $info['theme_file'];
|
|
if ( is_readable( $css ) ) {
|
|
$themes[ $key ] = get_file_data( $info['theme_root'] . '/' . $info['theme_file'], $theme_headers, 'theme' );
|
|
$themes[ $key ]['theme_root'] = $info['theme_root'];
|
|
$themes[ $key ]['theme_file'] = $info['theme_file'];
|
|
}
|
|
}
|
|
}
|
|
|
|
return $themes;
|
|
}
|
|
|
|
function cerber_is_base64_encoded( $val ) {
|
|
$val = trim( $val );
|
|
if ( empty( $val ) || is_numeric( $val ) || strlen( $val ) < 8 || preg_match( '/[^A-Z0-9\+\/=]/i', $val ) ) {
|
|
return false;
|
|
}
|
|
if ( $val = @base64_decode( $val ) ) {
|
|
if ( ! preg_match( '/[\x00-\x08\x0B-\x0C\x0E-\x1F]/', $val ) ) { // ASCII control characters must not be
|
|
if ( preg_match( '/[A-Z]/i', $val ) ) { // Latin chars must be
|
|
return $val;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
return false;
|
|
}
|
|
|
|
function crb_is_alphanumeric( $str ) {
|
|
return ! preg_match( '/[^\w\-]/', $str );
|
|
}
|
|
|
|
/**
|
|
* @param array $arr
|
|
* @param array $fields
|
|
*
|
|
* @return bool
|
|
*/
|
|
function crb_arrays_similar( &$arr, $fields ) {
|
|
if ( crb_array_diff_keys( $arr, $fields ) ) {
|
|
return false;
|
|
}
|
|
|
|
foreach ( $fields as $field => $pattern ) {
|
|
if ( is_callable( $pattern ) ) {
|
|
if ( ! call_user_func( $pattern, $arr[ $field ] ) ) {
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
if ( ! preg_match( $pattern, $arr[ $field ] ) ) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function cerber_get_html_label( $iid ) {
|
|
$css['scan-ilabel'] = '
|
|
color: #fff;
|
|
margin-left: 6px;
|
|
display: inline-block;
|
|
line-height: 1em;
|
|
padding: 3px 5px;
|
|
font-size: 92%;
|
|
';
|
|
|
|
if ( $iid == 1 ) {
|
|
$c = '#33be84;';
|
|
}
|
|
else {
|
|
$c = '#dc2f34;';
|
|
}
|
|
|
|
return '<span style="background-color:' . $c . $css['scan-ilabel'] . '">' . cerber_get_issue_label( $iid ) . '</span>';
|
|
|
|
}
|
|
|
|
function crb_getallheaders() {
|
|
|
|
if ( function_exists( 'getallheaders' ) ) {
|
|
return getallheaders();
|
|
}
|
|
|
|
// @since v. 7.7 for PHP-FPM
|
|
|
|
$headers = array();
|
|
foreach ( $_SERVER as $name => $value ) {
|
|
if ( substr( $name, 0, 5 ) == 'HTTP_' ) {
|
|
$headers[ str_replace( ' ', '-', ucwords( strtolower( str_replace( '_', ' ', substr( $name, 5 ) ) ) ) ) ] = $value;
|
|
}
|
|
}
|
|
|
|
return $headers;
|
|
}
|
|
|
|
|
|
/**
|
|
* Write message to the diagnostic log
|
|
*
|
|
* @param string|array $msg
|
|
* @param string $source
|
|
*
|
|
* @return bool|int
|
|
*/
|
|
function cerber_diag_log( $msg, $source = '' ) {
|
|
if ( ! $msg || ! $log = @fopen( cerber_get_diag_log(), 'a' ) ) {
|
|
return false;
|
|
}
|
|
if ( $source ) {
|
|
$source = '[' . $source . ']';
|
|
}
|
|
if ( ! is_array( $msg ) ) {
|
|
$msg = array( $msg );
|
|
}
|
|
foreach ( $msg as $line ) {
|
|
//$ret = @fwrite( $log, '[' .cerber_get_remote_ip(). '][' . cerber_date( time() ) . ']' . $source . ' ' . $line . PHP_EOL );
|
|
$ret = @fwrite( $log, '[' . cerber_date( time() ) . ']' . $source . ' ' . $line . PHP_EOL );
|
|
}
|
|
|
|
@fclose( $log );
|
|
|
|
return $ret;
|
|
}
|
|
|
|
function cerber_get_diag_log() {
|
|
|
|
//$dir = ( defined( 'CERBER_DIAG_DIR' ) && is_dir( CERBER_DIAG_DIR ) ) ? CERBER_DIAG_DIR . '/' : cerber_get_the_folder();
|
|
if ( defined( 'CERBER_DIAG_DIR' ) && is_dir( CERBER_DIAG_DIR ) ) {
|
|
$dir = CERBER_DIAG_DIR;
|
|
}
|
|
else {
|
|
if ( ! $dir = cerber_get_the_folder() ) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return rtrim( $dir, '/' ) . '/cerber-debug.log';
|
|
}
|
|
|
|
function cerber_truncate_log( $bytes = 10000000 ) {
|
|
$file = cerber_get_diag_log();
|
|
if ( ! is_file( $file ) || filesize( $file ) <= $bytes ) {
|
|
return;
|
|
}
|
|
if ( $bytes == 0 ) {
|
|
$log = @fopen( $file, 'w' );
|
|
@fclose( $log );
|
|
return;
|
|
}
|
|
if ( $text = file_get_contents( $file ) ) {
|
|
$text = substr( $text, 0 - $bytes );
|
|
if ( ! $log = @fopen( $file, 'w' ) ) {
|
|
return;
|
|
}
|
|
@fwrite( $log, $text );
|
|
@fclose( $log );
|
|
}
|
|
}
|
|
|
|
function crb_get_bloginfo( $what ) {
|
|
static $info = array();
|
|
if ( ! isset( $info[ $what ] ) ) {
|
|
$info[ $what ] = get_bloginfo( $what );
|
|
}
|
|
|
|
return $info[ $what ];
|
|
}
|
|
|
|
function crb_is_php_mod() {
|
|
require_once( ABSPATH . 'wp-admin/includes/misc.php' );
|
|
if ( apache_mod_loaded( 'mod_php7' ) ) {
|
|
return true;
|
|
}
|
|
if ( apache_mod_loaded( 'mod_php5' ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* PHP implementation of fromCharCode
|
|
*
|
|
* @param $str
|
|
*
|
|
* @return string
|
|
*/
|
|
function cerber_fromcharcode( $str ) {
|
|
$vals = explode( ',', $str );
|
|
$vals = array_map( function ( $v ) {
|
|
$v = trim( $v );
|
|
if ( $v[0] == '0' ) {
|
|
$v = ( $v[1] == 'x' || $v[1] == 'X' ) ? hexdec( $v ) : octdec( $v );
|
|
}
|
|
else {
|
|
$v = intval( $v );
|
|
}
|
|
|
|
return '&#' . $v . ';';
|
|
}, $vals );
|
|
$ret = mb_convert_encoding( implode( '', $vals ), 'UTF-8', 'HTML-ENTITIES' );
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* @param $dir string Directory to empty with a trailing directory separator
|
|
*
|
|
* @return int|WP_Error
|
|
*/
|
|
function cerber_empty_dir( $dir ) {
|
|
//$trd = rtrim( $dir, '/\\' );
|
|
if ( ! @is_dir( $dir )
|
|
|| 0 === strpos( $dir, ABSPATH ) ) { // Workaround for a non-legitimate use of this function
|
|
return new WP_Error( 'no-dir', 'This directory cannot be emptied' );
|
|
}
|
|
|
|
$files = @scandir( $dir );
|
|
if ( ! is_array( $files ) || empty( $files ) ) {
|
|
return true;
|
|
}
|
|
|
|
$fs = cerber_init_wp_filesystem();
|
|
if ( is_wp_error( $fs ) ) {
|
|
return $fs;
|
|
}
|
|
|
|
$ret = true;
|
|
|
|
foreach ( $files as $file ) {
|
|
$full = $dir . $file;
|
|
if ( @is_file( $full ) ) {
|
|
if ( ! @unlink( $full ) ) {
|
|
$ret = false;
|
|
}
|
|
}
|
|
elseif ( ! in_array( $file, array( '..', '.' ) ) && is_dir( $full ) ) {
|
|
if ( ! $fs->rmdir( $full, true ) ) {
|
|
$ret = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( ! $ret ) {
|
|
return new WP_Error( 'file-deletion-error', 'Some files or subdirectories in this directory cannot be deleted: ' . $dir );
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Tries to raise PHP limits
|
|
*
|
|
*/
|
|
function crb_raise_limits( $mem = null ) {
|
|
|
|
@ini_set( 'max_execution_time', 180 );
|
|
|
|
if ( function_exists( 'set_time_limit' )
|
|
&& false === strpos( ini_get( 'disable_functions' ), 'set_time_limit' ) ) {
|
|
@set_time_limit( 0 );
|
|
}
|
|
|
|
if ( $mem ) {
|
|
@ini_set( 'memory_limit', $mem );
|
|
}
|
|
}
|
|
|
|
function cerber_mask_email( $email ) {
|
|
list( $box, $host ) = explode( '@', $email );
|
|
$box = str_pad( $box[0], strlen( $box ), '*' );
|
|
$host = str_pad( substr( $host, strrpos( $host, '.' ) ), strlen( $host ), '*', STR_PAD_LEFT );
|
|
|
|
return str_replace( '*', '∗', $box . '@' . $host );
|
|
}
|
|
|
|
/**
|
|
* A modified clone of insert_with_markers() from wp-admin/includes/misc.php
|
|
* Removed switch_to_locale() and related stuff that were introduced in WP 5.3. and cause problem if calling ite before 'init' hook.
|
|
*
|
|
* Inserts an array of strings into a file (.htaccess ), placing it between
|
|
* BEGIN and END markers.
|
|
*
|
|
* Replaces existing marked info. Retains surrounding
|
|
* data. Creates file if none exists.
|
|
*
|
|
* @since 8.5.1
|
|
*
|
|
* @param string $filename Filename to alter.
|
|
* @param string $marker The marker to alter.
|
|
* @param array|string $insertion The new content to insert.
|
|
* @return bool True on write success, false on failure.
|
|
*/
|
|
function crb_insert_with_markers( $filename, $marker, $insertion ) {
|
|
if ( ! file_exists( $filename ) ) {
|
|
if ( ! is_writable( dirname( $filename ) ) ) {
|
|
return false;
|
|
}
|
|
if ( ! touch( $filename ) ) {
|
|
return false;
|
|
}
|
|
}
|
|
elseif ( ! is_writeable( $filename ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( ! is_array( $insertion ) ) {
|
|
$insertion = explode( "\n", $insertion );
|
|
}
|
|
|
|
$start_marker = "# BEGIN {$marker}";
|
|
$end_marker = "# END {$marker}";
|
|
|
|
$fp = fopen( $filename, 'r+' );
|
|
if ( ! $fp ) {
|
|
return false;
|
|
}
|
|
|
|
// Attempt to get a lock. If the filesystem supports locking, this will block until the lock is acquired.
|
|
flock( $fp, LOCK_EX );
|
|
|
|
$lines = array();
|
|
while ( ! feof( $fp ) ) {
|
|
$lines[] = rtrim( fgets( $fp ), "\r\n" );
|
|
}
|
|
|
|
// Split out the existing file into the preceding lines, and those that appear after the marker
|
|
$pre_lines = array();
|
|
$post_lines = array();
|
|
$existing_lines = array();
|
|
$found_marker = false;
|
|
$found_end_marker = false;
|
|
foreach ( $lines as $line ) {
|
|
if ( ! $found_marker && false !== strpos( $line, $start_marker ) ) {
|
|
$found_marker = true;
|
|
continue;
|
|
}
|
|
elseif ( ! $found_end_marker && false !== strpos( $line, $end_marker ) ) {
|
|
$found_end_marker = true;
|
|
continue;
|
|
}
|
|
if ( ! $found_marker ) {
|
|
$pre_lines[] = $line;
|
|
}
|
|
elseif ( $found_marker && $found_end_marker ) {
|
|
$post_lines[] = $line;
|
|
}
|
|
else {
|
|
$existing_lines[] = $line;
|
|
}
|
|
}
|
|
|
|
// Check to see if there was a change
|
|
if ( $existing_lines === $insertion ) {
|
|
flock( $fp, LOCK_UN );
|
|
fclose( $fp );
|
|
|
|
return true;
|
|
}
|
|
|
|
// Generate the new file data
|
|
$new_file_data = implode(
|
|
"\n",
|
|
array_merge(
|
|
$pre_lines,
|
|
array( $start_marker ),
|
|
$insertion,
|
|
array( $end_marker ),
|
|
$post_lines
|
|
)
|
|
);
|
|
|
|
// Write to the start of the file, and truncate it to that length
|
|
fseek( $fp, 0 );
|
|
$bytes = fwrite( $fp, $new_file_data );
|
|
if ( $bytes ) {
|
|
ftruncate( $fp, ftell( $fp ) );
|
|
}
|
|
fflush( $fp );
|
|
flock( $fp, LOCK_UN );
|
|
fclose( $fp );
|
|
|
|
return (bool) $bytes;
|
|
}
|
|
|
|
function crb_file_headers( $fname ) {
|
|
$fname = rawurlencode( $fname ); // encode non-ASCII symbols
|
|
@ob_clean(); // This trick is crucial for some servers/environments (e.g. some IIS)
|
|
header( "Content-Type: application/octet-stream" );
|
|
header( "Content-Disposition: attachment; filename*=UTF-8''{$fname}" );
|
|
}
|
|
|
|
// The key-value cache
|
|
|
|
final class CRB_Cache {
|
|
private static $cache = array();
|
|
private static $stat = array();
|
|
private static $wp_cache_group = 'wp_cerber';
|
|
private static $wp_key_list = 'wp_cerber_list';
|
|
|
|
static function set( $key, $value, $expire = 0 ) {
|
|
$exp = 0;
|
|
|
|
if ( $expire > 0 ) {
|
|
$exp = time() + (int) $expire;
|
|
if ( $exp < time() ) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$element = array( $value, $exp );
|
|
self::$cache[ $key ] = $element;
|
|
|
|
if ( self::checker() ) {
|
|
wp_cache_set( $key, $element, self::$wp_cache_group );
|
|
|
|
$entries = wp_cache_get( self::$wp_key_list, self::$wp_key_list );
|
|
if ( ! $entries ) {
|
|
$entries = array();
|
|
}
|
|
$entries[ $key ] = $expire;
|
|
wp_cache_set( self::$wp_key_list, $entries, self::$wp_key_list );
|
|
}
|
|
|
|
if ( ! isset( self::$stat[ $key ] ) ) {
|
|
self::$stat[ $key ] = array( 0, 0 );
|
|
}
|
|
|
|
self::$stat[ $key ][0] ++;
|
|
|
|
return true;
|
|
}
|
|
|
|
static function get( $key, $default = null ) {
|
|
|
|
$element = crb_array_get( self::$cache, $key );
|
|
|
|
if ( ! is_array( $element ) ) {
|
|
if ( self::checker() ) {
|
|
$element = wp_cache_get( $key, self::$wp_cache_group );
|
|
}
|
|
}
|
|
|
|
if ( ! is_array( $element ) ) {
|
|
return $default;
|
|
}
|
|
|
|
if ( ! empty( $element[1] ) && $element[1] < time() ) {
|
|
self::delete( $key );
|
|
|
|
return $default;
|
|
}
|
|
|
|
if ( ! isset( self::$stat[ $key ] ) ) {
|
|
self::$stat[ $key ] = array( 0, 0 );
|
|
}
|
|
|
|
self::$stat[ $key ][1] ++;
|
|
|
|
return $element[0];
|
|
}
|
|
|
|
static function delete( $key ) {
|
|
if ( isset( self::$cache[ $key ] ) ) {
|
|
unset( self::$cache[ $key ] );
|
|
}
|
|
if ( self::checker() ) {
|
|
wp_cache_delete( $key, self::$wp_cache_group );
|
|
}
|
|
}
|
|
|
|
static function reset() {
|
|
self::$cache = array();
|
|
|
|
if ( $entries = wp_cache_get( self::$wp_key_list, self::$wp_key_list ) ) {
|
|
foreach ( $entries as $entry => $exp ) {
|
|
wp_cache_delete( $entry, self::$wp_cache_group );
|
|
}
|
|
|
|
wp_cache_delete( self::$wp_key_list, self::$wp_key_list );
|
|
}
|
|
}
|
|
|
|
static function get_stat( $recheck = false ) {
|
|
$entries = wp_cache_get( self::$wp_key_list, self::$wp_key_list );
|
|
|
|
if ( $recheck && $entries ) { // Make sure that our list of existing key doesn't contain wrong entries
|
|
foreach ( $entries as $key => $exp ) {
|
|
if ( ! $element = wp_cache_get( $key, self::$wp_cache_group ) ) {
|
|
unset( $entries[ $key ] );
|
|
}
|
|
}
|
|
|
|
wp_cache_set( self::$wp_key_list, $entries, self::$wp_key_list );
|
|
}
|
|
|
|
return array( self::$stat, $entries );
|
|
}
|
|
|
|
static function checker() {
|
|
|
|
$sid = get_wp_cerber()->getRequestID();
|
|
$check = wp_cache_get( '__checker__', self::$wp_cache_group );
|
|
|
|
if ( ! $check || ! isset( $check['t'] ) || ! isset( $check['s'] ) ) {
|
|
wp_cache_set( '__checker__', array(
|
|
't' => time(),
|
|
's' => $sid
|
|
), self::$wp_cache_group );
|
|
|
|
return 0;
|
|
}
|
|
|
|
if ( $check['s'] == $sid ) {
|
|
return 0;
|
|
}
|
|
|
|
return $check['t'];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param $key string
|
|
* @param $value mixed
|
|
* @param $expire integer Element will expire in X seconds, 0 = never expires
|
|
*
|
|
* @return bool
|
|
*/
|
|
function cerber_cache_set( $key, $value, $expire = 0 ) {
|
|
return CRB_Cache::set( $key, $value, $expire );
|
|
}
|
|
|
|
/**
|
|
* @param $key string
|
|
* @param $default mixed
|
|
*
|
|
* @return mixed|null
|
|
*/
|
|
function cerber_cache_get( $key, $default = null ) {
|
|
return CRB_Cache::get( $key, $default );
|
|
}
|
|
|
|
function cerber_cache_delete( $key ) {
|
|
CRB_Cache::delete( $key );
|
|
}
|
|
|
|
function cerber_cache_enable() {
|
|
global $cerber_use_cache;
|
|
$cerber_use_cache = true;
|
|
}
|
|
|
|
function cerber_cache_disable() {
|
|
global $cerber_use_cache;
|
|
$cerber_use_cache = false;
|
|
}
|
|
|
|
function cerber_cache_is_enabled() {
|
|
global $cerber_use_cache;
|
|
|
|
return ! empty( $cerber_use_cache );
|
|
} |