mirror of
https://git.sindominio.net/estibadores/wordpress.git
synced 2024-09-20 07:14:01 +02:00
689 lines
20 KiB
PHP
689 lines
20 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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define( 'CERBER_PIN_LENGTH', 4 );
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define( 'CERBER_PIN_EXPIRES', 15 );
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final class CRB_2FA {
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private static $user_id = null;
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/**
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* Enforce 2FA for a user if needed
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*
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* @param $login string
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* @param $user WP_User
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*
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* @return bool|WP_Error
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*/
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static function enforce( $login, $user ) {
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static $done = false;
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if ( $done ) {
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return false;
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}
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$done = true;
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if ( crb_acl_is_white() ) {
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return false;
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}
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if ( ( ! $user instanceof WP_User ) || empty( $user->ID ) ) {
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return new WP_Error( 'no-user', 'Invalid user data' );
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}
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$cus = cerber_get_set( 'cerber_user', $user->ID );
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$tfm = crb_array_get( $cus, 'tfm' );
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if ( $tfm === 2 ) {
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return false;
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}
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$login = (string) $login;
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$go = false;
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if ( $tfm == 1 ) {
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$go = true;
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}
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else {
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$u_roles = null;
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if ( ! empty( $user->roles ) ) {
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$u_roles = $user->roles;
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}
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else { // a backup way
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$data = get_userdata( $user->ID );
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if ( ! empty( $data->roles ) ) {
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$u_roles = $data->roles;
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}
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}
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if ( empty( $u_roles ) ) {
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return new WP_Error( 'no-roles', 'No roles found for the user #' . $user->ID );
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}
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$go = self::check_role_policies( $cus, $u_roles );
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}
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if ( ! $go ) {
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return false;
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}
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// This user must complete 2FA
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$ret = self::enforce2fa( $user, $login );
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if ( is_wp_error( $ret ) ) {
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return $ret;
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}
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cerber_log( 400, $login, $user->ID );
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wp_safe_redirect( get_home_url() );
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exit;
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}
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/**
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* @param array $cus
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* @param array $roles
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*
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* @return bool
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*/
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private static function check_role_policies( $cus, $roles ) {
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foreach ( $roles as $role ) {
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$policies = cerber_get_role_policies( $role );
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if ( empty( $policies['2famode'] ) ) {
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continue;
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}
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elseif ( $policies['2famode'] == 1 ) {
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return true;
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}
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if ( $history = crb_array_get( $cus, '2fa_history' ) ) {
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if ( ( $logins = crb_array_get( $policies, '2falogins' ) )
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&& ( $history[0] >= $logins ) ) {
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return true;
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}
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if ( ( $days = crb_array_get( $policies, '2fadays' ) )
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&& ( ( time() - $history[1] ) > $days * 24 * 3600 ) ) {
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return true;
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}
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}
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if ( $last_login = crb_array_get( $cus, 'last_login' ) ) {
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if ( crb_array_get( $policies, '2fanewip' ) ) {
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if ( $last_login['ip'] != cerber_get_remote_ip() ) {
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return true;
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}
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}
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if ( crb_array_get( $policies, '2fanewnet4' ) ) {
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if ( cerber_get_subnet_ipv4( $last_login['ip'] ) != cerber_get_subnet_ipv4( cerber_get_remote_ip() ) ) {
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return true;
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}
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}
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if ( crb_array_get( $policies, '2fanewua' ) ) {
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if ( $last_login['ua'] != sha1( crb_array_get( $_SERVER, 'HTTP_USER_AGENT', '' ) ) ) {
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return true;
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}
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}
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if ( crb_array_get( $policies, '2fanewcountry' ) ) {
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if ( lab_get_country( $last_login['ip'], false ) != lab_get_country( cerber_get_remote_ip(), false ) ) {
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return true;
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}
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}
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}
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}
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return false;
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}
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/**
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* Initiate 2FA process
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*
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* @param $user
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* @param string $login
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*
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* @return bool|string|WP_Error
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*/
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private static function enforce2fa( $user, $login = '' ) {
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if ( ! $pin = self::generate_pin( $user->ID ) ) {
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return new WP_Error( '2fa-error', 'Unable to create PIN for the user #' . $user->ID );
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}
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$cus = cerber_get_set( 'cerber_user', $user->ID );
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$cus['2fa']['login'] = $login;
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$cus['2fa']['to'] = cerber_2fa_get_redirect_to( $user );
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$cus['2fa']['ajax'] = cerber_is_wp_ajax();
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$cus['2fa']['interim'] = isset( $_REQUEST['interim-login'] ) ? 1 : 0;
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cerber_update_set( 'cerber_user', $cus, $user->ID );
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return $pin;
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}
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/**
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* Generates PIN and its expiration
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*
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* @param $user_id
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*
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* @return bool|string
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*/
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private static function generate_pin( $user_id ) {
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$cus = cerber_get_set( 'cerber_user', $user_id );
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if ( ! $cus || ! is_array( $cus ) ) {
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$cus = array();
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}
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$pin = substr( str_shuffle( '1234567890' ), 0, CERBER_PIN_LENGTH );
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$cus['2fa'] = array(
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'pin' => $pin,
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'expires' => time() + CERBER_PIN_EXPIRES * 60,
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'attempts' => 0,
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'ip' => cerber_get_remote_ip(),
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'ua' => sha1( crb_array_get( $_SERVER, 'HTTP_USER_AGENT', '' ) )
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);
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if ( $ret = cerber_update_set( 'cerber_user', $cus, $user_id ) ) {
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self::send_user_pin( $user_id, $pin );
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return $pin;
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}
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return false;
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}
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static function restrict_and_verify( $user_id = null ) {
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global $cerber_status;
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static $done = false;
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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 ( ! $user_id && ! $user_id = get_current_user_id() ) {
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return;
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}
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self::$user_id = $user_id;
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$cus = cerber_get_set( 'cerber_user', $user_id );
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if ( ! $cus
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|| empty( $cus['2fa']['pin'] ) ) {
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return;
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}
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if ( crb_acl_is_white() ) {
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self::delete_2fa( $user_id );
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return;
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}
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// Check user settings again
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$tfm = crb_array_get( $cus, 'tfm' );
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if ( $tfm === 2 ) {
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self::delete_2fa( $user_id );
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return;
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}
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elseif ( ! $tfm ) {
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$user = wp_get_current_user();
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if ( ! self::check_role_policies( $cus, $user->roles ) ) {
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self::delete_2fa( $user->ID );
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return;
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}
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}
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$twofactor = $cus['2fa'];
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// Check: must be the same browser
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if ( $twofactor['ip'] != cerber_get_remote_ip()
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|| $twofactor['ua'] != sha1( crb_array_get( $_SERVER, 'HTTP_USER_AGENT', '' ) )
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|| ! cerber_is_ip_allowed() ) {
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self::delete_2fa( $user_id );
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cerber_user_logout();
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wp_redirect( get_home_url() );
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exit;
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}
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// User wants to abort 2FA?
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if ( $now = cerber_get_get( 'cerber_2fa_now' ) ) {
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$go = null;
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if ( $now == 'different' ) {
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$go = wp_login_url( ( ! empty( $twofactor['to'] ) ) ? urldecode( $twofactor['to'] ) : '' );
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}
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if ( $now == 'cancel' ) {
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$go = get_home_url();
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}
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if ( $go ) {
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cerber_user_logout( 28 );
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wp_redirect( $go );
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exit;
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}
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}
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if ( $twofactor['attempts'] > 10 ) {
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cerber_block_add( cerber_get_remote_ip(), 721 );
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cerber_user_logout();
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wp_redirect( get_home_url() );
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exit;
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}
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$new_pin = '';
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if ( $twofactor['expires'] < time() ) {
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$new_pin = self::generate_pin( $user_id );
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}
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// The first step of verification, ajax
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if ( cerber_is_http_post() ) {
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self::process_ajax( $new_pin );
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}
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// The second, final step of verification
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if ( cerber_is_http_post()
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&& ! empty( $twofactor['nonce'] )
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&& $_POST['cerber_tag'] === $twofactor['nonce']
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&& ( $pin = cerber_get_post( 'cerber_pin' ) )
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&& self::verify_pin( trim( $pin ) ) ) {
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unset( $cus['2fa'] );
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$cus['2fa_history'] = array( 0, time() );
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cerber_update_set( 'cerber_user', $cus, $user_id );
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$cerber_status = 27;
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cerber_log( 5, $twofactor['login'], $user_id );
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cerber_login_history( $user_id );
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cerber_2fa_checker( true );
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$url = ( ! empty( $twofactor['to'] ) ) ? $twofactor['to'] : get_home_url();
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wp_safe_redirect( $url );
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exit;
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}
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self::show_2fa_page();
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exit;
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}
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static function process_ajax( $new_pin ) {
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if ( ( ! $nonce = cerber_get_post( 'the_2fa_nonce', '\w+' ) )
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|| ( ! $pin = cerber_get_post( 'cerber_verify_pin' ) ) ) {
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return;
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}
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$err = '';
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if ( ! wp_verify_nonce( $nonce, 'crb-ajax-2fa' ) ) {
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$err = 'Nonce error.';
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}
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elseif ( $new_pin) {
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$err = __('This verification PIN code is expired. We have just sent a new one to your email.','wp-cerber');
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}
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elseif ( ! self::verify_pin( trim( $pin ), $nonce ) ) {
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$err = __('You have entered an incorrect verification PIN code','wp-cerber');
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}
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echo json_encode( array( 'error' => $err ) );
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exit;
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}
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private static function verify_pin( $pin, $nonce = null ) {
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$cus = cerber_get_set( 'cerber_user', self::$user_id );
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if ( ! $cus
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|| empty( $cus['2fa']['pin'] )
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|| $cus['2fa']['expires'] < time() ) {
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return false;
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}
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if ( (string) $pin === (string) $cus['2fa']['pin'] ) {
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$ret = true;
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if ( ! $nonce ) {
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return $ret;
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}
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$cus['2fa']['nonce'] = $nonce;
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}
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else {
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$cus['2fa']['attempts'] ++;
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$ret = false;
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}
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cerber_update_set( 'cerber_user', $cus, self::$user_id );
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return $ret;
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}
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static function show_2fa_page( $echo = true ) {
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@ini_set( 'display_errors', 0 );
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$ajax_vars = 'var ajaxurl = "' . admin_url( 'admin-ajax.php' ) . '";';
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$ajax_vars .= 'var nonce2fa = "'. wp_create_nonce( 'crb-ajax-2fa' ).'";';
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if ( ! defined( 'CONCATENATE_SCRIPTS' ) ) {
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define( 'CONCATENATE_SCRIPTS', false );
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}
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wp_enqueue_script( 'jquery' );
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ob_start();
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?>
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<!DOCTYPE html>
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<html style="height: 100%;">
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<head>
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<meta charset="UTF-8">
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<title><?php _e( 'Please verify that it’s you', 'wp-cerber' ); ?></title>
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<style>
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body {
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font-family: Arial, Helvetica, sans-serif;
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color: #555;
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}
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#cerber_2fa_inner {
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width: 350px;
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}
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@media (-webkit-min-device-pixel-ratio: 2) and (max-width: 1000px),
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(min-resolution: 192dpi) and (max-width: 1000px), {
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#cerber_2fa_inner {
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width: 100%;
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}
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}
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@media screen and (max-width: 900px) {
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#cerber_2fa_inner {
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/*width: 100%;*/
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}
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}
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#cerber_2fa_msg {
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display: none;
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position: fixed;
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top: 0;
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left: 0;
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width: 100%;
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/*height: 80px;*/
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padding: 40px 0 40px 0;
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background-color: #FF5733;
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color: #fff;
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opacity: 0.9;
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}
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#cerber_2fa_form input[type="text"] {
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color: #000;
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text-align: center;
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font-size: 1.5em;
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letter-spacing: 0.1em;
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padding: 5px;
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min-width: 140px;
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border-radius: 4px;
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}
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#cerber_2fa_form input[type="submit"] {
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color: white;
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background: #0085ba;
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/*background: #0073aa;*/
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border: 0;
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font-size: 1em;
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font-weight: 600;
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letter-spacing: 0.1em;
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text-align: center;
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cursor: pointer;
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padding: 1em;
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min-width: 150px;
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border-radius: 4px;
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}
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</style>
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<?php print_head_scripts(); ?>
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<script>
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<?php echo $ajax_vars; ?>
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</script>
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</head>
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<body style="height: 90%; text-align: center;">
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<div style="display: flex; align-items: center; justify-content: center; text-align: center; height: 90%;">
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<?php
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self::cerber_2fa_form();
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?>
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</div>
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</body>
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</html>
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<?php
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$html = ob_get_clean();
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if ( $echo ) {
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echo $html;
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}
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return $html;
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}
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static function send_user_pin( $user_id, $pin, $details = true ) {
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$to = self::get_user_email( $user_id );
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$subj = __( 'Please verify that it’s you', 'wp-cerber' );
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$body = array();
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$body[] = 'We need to verify that it’s you because you are trying to sign-in from a different device or a different location or you have not signed in for a long time. If this wasn’t you, please reset your password immediately.';
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$body[] = __( 'Please use the following verification PIN code to confirm your identity', 'wp-cerber' ) . '. ' . sprintf( __( 'The code is valid for %s minutes.', 'wp-cerber' ), CERBER_PIN_EXPIRES );
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if ( ! $pin && ( $p = self::get_user_pin( $user_id ) ) ) {
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$pin = $p['pin'];
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}
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if ( ! $pin ) {
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return false;
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}
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$body[] = $pin;
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$data = get_userdata( $user_id );
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if ( $details ) {
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$ds = array();
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$ds[] = 'Login: ' . $data->user_login;
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$ds[] = 'IP: ' . cerber_get_remote_ip();
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if ( $c = lab_get_country( cerber_get_remote_ip(), false ) ) {
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$ds[] = 'Location: ' . cerber_country_name( $c ) . ' (' . $c . ')';
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}
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$ds[] = 'Browser: ' . substr( strip_tags( crb_array_get( $_SERVER, 'HTTP_USER_AGENT', 'Not set' ) ), 0, 1000 );
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$ds[] = 'Date: ' . cerber_date( time() );
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$body[] = '';
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$body[] = __( 'Here are the details of the sign-in attempt', 'wp-cerber' );
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$body[] = implode( "\n", $ds );
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}
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$body = implode( "\n\n", $body );
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$result = wp_mail( $to, $subj, $body );
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if ( $result && ( $data->user_email != $to ) ) {
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// TODO Add a notification to the main email
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//wp_mail( $data->user_email, $subj, $body );
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}
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}
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static function get_user_email( $user_id = null ) {
|
||
if ( ! $user_id ) {
|
||
$user_id = get_current_user_id();
|
||
}
|
||
|
||
$cus = cerber_get_set( 'cerber_user', $user_id );
|
||
if ( $cus && ( $email = crb_array_get( $cus, 'tfemail' ) ) ) {
|
||
return $email;
|
||
}
|
||
|
||
$data = get_userdata( $user_id );
|
||
|
||
return $data->user_email;
|
||
}
|
||
|
||
static function get_user_pin( $user_id ) {
|
||
|
||
$cus = cerber_get_set( 'cerber_user', $user_id );
|
||
|
||
if ( ! $cus
|
||
|| empty( $cus['2fa']['pin'] )
|
||
|| $cus['2fa']['expires'] < time() ) {
|
||
return false;
|
||
}
|
||
|
||
return $cus['2fa'];
|
||
|
||
}
|
||
|
||
static function get_user_pin_info( $user_id ) {
|
||
|
||
if ( ! $pin = self::get_user_pin( $user_id ) ) {
|
||
return '';
|
||
}
|
||
|
||
return '<code style="font-size: 120%;">' . $pin['pin'] . '</code> ' . __( 'expires', 'wp-cerber' ) . ' ' . cerber_ago_time( $pin['expires'] );
|
||
|
||
}
|
||
|
||
static function delete_2fa( $uid ) {
|
||
if ( ! $uid = absint( $uid ) ) {
|
||
return;
|
||
}
|
||
$cus = cerber_get_set( 'cerber_user', $uid );
|
||
if ( $cus && isset( $cus['2fa'] ) ) {
|
||
unset( $cus['2fa'] );
|
||
cerber_update_set( 'cerber_user', $cus, $uid );
|
||
}
|
||
}
|
||
|
||
static function cerber_2fa_form() {
|
||
$max = CERBER_PIN_LENGTH;
|
||
$atts = 'pattern="\d{' . $max . '}" maxlength="' . $max . '" size="' . $max . '" title="' . __( 'only digits are allowed', 'wp-cerber' ) . '"';
|
||
// Please enter your PIN code to continue
|
||
$email = self::get_user_email();
|
||
$text = __( "We've sent a verification PIN code to your email", 'wp-cerber' ) . ' ' . cerber_mask_email( $email ) .
|
||
'<p>'. __( 'Enter the code from the email in the field below.', 'wp-cerber' ).'</p>';
|
||
//$change = '<a href="' . cerber_get_home_url() . '/?cerber_2fa_now=different">' . __( 'Sign in with a different account', 'wp-cerber' ) . '</a>';
|
||
$change = '<a href="' . cerber_get_home_url() . '/?cerber_2fa_now=different">' . __( 'Try again', 'wp-cerber' ) . '</a>';
|
||
$cancel = '<a href="' . cerber_get_home_url() . '/?cerber_2fa_now=cancel">' . __( 'Cancel', 'wp-cerber' ) . '</a>';
|
||
$links = '<p>'.__( 'Did not receive an email?', 'wp-cerber' ) .'</p>'. $change . ' ' . __( 'or', 'wp-cerber' ) . ' ' . $cancel;
|
||
?>
|
||
<div id="cerber_2fa_msg"></div>
|
||
<div>
|
||
<div id="cerber_2fa_wrap" style="text-align: center; background-color: #eee; border-top: solid 4px #ddd; padding: 1.5em 3em 1.5em 3em;">
|
||
<div id="cerber_2fa_inner" style="text-align: center;">
|
||
<h1 style="color:#000;"><?php _e( "Verify it's you", 'wp-cerber' ); ?></h1>
|
||
<div id="cerber_2fa_info" style="color: #333;"><?php echo $text; ?></div>
|
||
<form id="cerber_2fa_form" method="post" data-verified="no" style="margin-bottom: 3em;">
|
||
<p><input required type="text" name="cerber_pin" <?php echo $atts; ?> ></p>
|
||
<p><input type="hidden" name="cerber_tag" value="2FA"></p>
|
||
<p><input type="submit" value="<?php _e( 'Verify', 'wp-cerber' ); ?>"></p>
|
||
</form>
|
||
</div>
|
||
</div>
|
||
<?php echo $links; ?>
|
||
</div>
|
||
<script>
|
||
jQuery(document).ready(function ($) {
|
||
var cform = $('#cerber_2fa_form');
|
||
var umsg = 'cerber_2fa_msg';
|
||
cform.submit(function (event) {
|
||
crb_hide_user_msg();
|
||
if (cform.data('verified') === 'yes') {
|
||
return;
|
||
}
|
||
event.preventDefault();
|
||
$.post(ajaxurl, {
|
||
the_2fa_nonce: nonce2fa,
|
||
cerber_verify_pin: $(this).find('input[type="text"]').val()
|
||
},
|
||
function (server_response, textStatus, jqXHR) {
|
||
var server_data = $.parseJSON(server_response);
|
||
if (server_data.error.length === 0) {
|
||
cform.find('[name="cerber_tag"]').val(nonce2fa);
|
||
cform.data('verified', 'yes');
|
||
cform.submit();
|
||
}
|
||
else {
|
||
crb_display_user_msg(server_data['error']);
|
||
}
|
||
}
|
||
).fail(function (jqXHR, textStatus, errorThrown) {
|
||
var err = errorThrown + ' ' + jqXHR.status;
|
||
alert(err);
|
||
console.error('Server Error: ' + err);
|
||
});
|
||
});
|
||
|
||
function crb_display_user_msg(msg) {
|
||
$('#' + umsg).fadeIn(500).html(msg);
|
||
setTimeout(function (args) {
|
||
crb_hide_user_msg();
|
||
}, 5000);
|
||
}
|
||
|
||
function crb_hide_user_msg() {
|
||
document.getElementById(umsg).style.display = "none";
|
||
}
|
||
});
|
||
</script>
|
||
<?php
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param $user WP_User
|
||
*
|
||
* @return string
|
||
*/
|
||
function cerber_2fa_get_redirect_to( $user ) {
|
||
if ( isset( $_REQUEST['redirect_to'] ) ) {
|
||
$redirect_to = $_REQUEST['redirect_to'];
|
||
$requested_redirect_to = $redirect_to;
|
||
}
|
||
else {
|
||
$redirect_to = admin_url();
|
||
$requested_redirect_to = '';
|
||
}
|
||
|
||
$redirect_to = apply_filters( 'login_redirect', $redirect_to, $requested_redirect_to, $user );
|
||
|
||
return $redirect_to;
|
||
}
|
||
|
||
/**
|
||
* Verify that 2FA on the website works
|
||
* If it works, 2FA can be enabled for admins
|
||
*
|
||
*/
|
||
function cerber_2fa_checker( $save = false ) {
|
||
if ( $save ) {
|
||
cerber_update_set( 'cerber_2fa_is_ok', 1, null, false );
|
||
}
|
||
else {
|
||
if ( cerber_get_set( 'cerber_2fa_is_ok', null, false ) ) {
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
}
|