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<?php
include_once(LOGINIZER_DIR.'/lib/IPv6/IPv6.php');
// Get the client IP
function _lz_getip(){
if(isset($_SERVER["REMOTE_ADDR"])){
return $_SERVER["REMOTE_ADDR"];
}elseif(isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
return $_SERVER["HTTP_X_FORWARDED_FOR"];
}elseif(isset($_SERVER["HTTP_CLIENT_IP"])){
return $_SERVER["HTTP_CLIENT_IP"];
}
}
// Get the client IP
function lz_getip(){
global $loginizer;
// Just so that we have something
$ip = _lz_getip();
$loginizer['ip_method'] = (int) @$loginizer['ip_method'];
if(isset($_SERVER["REMOTE_ADDR"])){
$ip = $_SERVER["REMOTE_ADDR"];
}
if(isset($_SERVER["HTTP_X_FORWARDED_FOR"]) && @$loginizer['ip_method'] == 1){
if(strpos($_SERVER["HTTP_X_FORWARDED_FOR"], ',')){
$temp_ip = explode(',', $_SERVER["HTTP_X_FORWARDED_FOR"]);
$ip = trim($temp_ip[0]);
}else{
$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
}
}
if(isset($_SERVER["HTTP_CLIENT_IP"]) && @$loginizer['ip_method'] == 2){
$ip = $_SERVER["HTTP_CLIENT_IP"];
}
if(@$loginizer['ip_method'] == 3 && isset($_SERVER[@$loginizer['custom_ip_method']])){
$ip = $_SERVER[@$loginizer['custom_ip_method']];
}
// Hacking fix for X-Forwarded-For
if(!lz_valid_ip($ip)){
return '';
}
return $ip;
}
// Execute a select query and return an array
function lz_selectquery($query, $array = 0){
global $wpdb;
$result = $wpdb->get_results($query, 'ARRAY_A');
if(empty($array)){
return current($result);
}else{
return $result;
}
}
// Check if an IP is valid
function lz_valid_ip($ip){
// IPv6
if(lz_valid_ipv6($ip)){
return true;
}
// IPv4
if(!ip2long($ip) || !lz_valid_ipv4($ip)){
return false;
}
return true;
}
function lz_valid_ipv4($ip){
if(!preg_match('/^(\d){1,3}\.(\d){1,3}\.(\d){1,3}\.(\d){1,3}$/is', $ip) || substr_count($ip, '.') != 3){
return false;
}
$r = explode('.', $ip);
foreach($r as $v){
$v = (int) $v;
if($v > 255 || $v < 0){
return false;
}
}
return true;
}
function lz_valid_ipv6($ip){
$pattern = '/^((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:))$/';
if(!preg_match($pattern, $ip)){
return false;
}
return true;
}
// Check if a field is posted via POST else return default value
function lz_optpost($name, $default = ''){
if(!empty($_POST[$name])){
return lz_inputsec(lz_htmlizer(trim($_POST[$name])));
}
return $default;
}
// Check if a field is posted via GET else return default value
function lz_optget($name, $default = ''){
if(!empty($_GET[$name])){
return lz_inputsec(lz_htmlizer(trim($_GET[$name])));
}
return $default;
}
// Check if a field is posted via GET or POST else return default value
function lz_optreq($name, $default = ''){
if(!empty($_REQUEST[$name])){
return lz_inputsec(lz_htmlizer(trim($_REQUEST[$name])));
}
return $default;
}
// For filling in posted values
function lz_POSTval($name, $default = ''){
return (!empty($_POST) ? (!isset($_POST[$name]) ? '' : esc_html($_POST[$name])) : $default);
}
function lz_POSTchecked($name, $default = false, $submit_name = ''){
if(!empty($submit_name)){
$post_to_check = isset($_POST[$submit_name]) ? $_POST[$submit_name] : '';
}else{
$post_to_check = $_POST;
}
return (!empty($post_to_check) ? (isset($_POST[$name]) ? 'checked="checked"' : '') : (!empty($default) ? 'checked="checked"' : ''));
}
function lz_POSTselect($name, $value, $default = false){
if(empty($_POST)){
if(!empty($default)){
return 'selected="selected"';
}
}else{
if(isset($_POST[$name])){
if(trim($_POST[$name]) == $value){
return 'selected="selected"';
}
}
}
}
function lz_POSTradio($name, $val, $default = null){
return (!empty($_POST) ? (@$_POST[$name] == $val ? 'checked="checked"' : '') : (!is_null($default) && $default == $val ? 'checked="checked"' : ''));
}
function lz_inputsec($string){
$string = addslashes($string);
// This is to replace ` which can cause the command to be executed in exec()
$string = str_replace('`', '\`', $string);
return $string;
}
function lz_htmlizer($string){
$string = htmlentities($string, ENT_QUOTES, 'UTF-8');
preg_match_all('/(&#(\d{1,7}|x[0-9a-fA-F]{1,6});)/', $string, $matches);//r_print($matches);
foreach($matches[1] as $mk => $mv){
$tmp_m = lz_entity_check($matches[2][$mk]);
$string = str_replace($matches[1][$mk], $tmp_m, $string);
}
return $string;
}
function lz_entity_check($string){
//Convert Hexadecimal to Decimal
$num = ((substr($string, 0, 1) === 'x') ? hexdec(substr($string, 1)) : (int) $string);
//Squares and Spaces - return nothing
$string = (($num > 0x10FFFF || ($num >= 0xD800 && $num <= 0xDFFF) || $num < 0x20) ? '' : '&#'.$num.';');
return $string;
}
// Check if a checkbox is selected
function lz_is_checked($post){
if(!empty($_POST[$post])){
return true;
}
return false;
}
// Reoort an error
function lz_report_error($error = array()){
if(empty($error)){
return true;
}
$error_string = '<b>Please fix the below error(s) :</b> <br />';
foreach($error as $ek => $ev){
$error_string .= '* '.$ev.'<br />';
}
echo '<div id="message" class="error"><p>'
. __($error_string, 'loginizer')
. '</p></div>';
}
// Report a notice
function lz_report_notice($notice = array()){
global $wp_version;
if(empty($notice)){
return true;
}
// Which class do we have to use ?
if(version_compare($wp_version, '3.8', '<')){
$notice_class = 'updated';
}else{
$notice_class = 'updated';
}
$notice_string = '<b>Please check the below notice(s) :</b> <br />';
foreach($notice as $ek => $ev){
$notice_string .= '* '.$ev.'<br />';
}
echo '<div id="message" class="'.$notice_class.'"><p>'
. __($notice_string, 'loginizer')
. '</p></div>';
}
// Convert an objext to array
function lz_objectToArray($d){
if(is_object($d)){
$d = get_object_vars($d);
}
if(is_array($d)){
return array_map(__FUNCTION__, $d); // recursive
}elseif(is_object($d)){
return lz_objectToArray($d);
}else{
return $d;
}
}
// Sanitize variables
function lz_sanitize_variables($variables = array()){
if(is_array($variables)){
foreach($variables as $k => $v){
$variables[$k] = trim($v);
$variables[$k] = escapeshellcmd($v);
}
}else{
$variables = escapeshellcmd(trim($variables));
}
return $variables;
}
// Is multisite ?
function lz_is_multisite() {
if(function_exists('get_site_option') && function_exists('is_multisite') && is_multisite()){
return true;
}
return false;
}
// Generate a random string
function lz_RandomString($length = 10){
$characters = '0123456789abcdefghijklmnopqrstuvwxyz';
$charactersLength = strlen($characters);
$randomString = '';
for($i = 0; $i < $length; $i++){
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
function lz_print($array){
echo '<pre>';
print_r($array);
echo '</pre>';
}
function lz_cleanpath($path){
$path = str_replace('\\\\', '/', $path);
$path = str_replace('\\', '/', $path);
$path = str_replace('//', '/', $path);
return rtrim($path, '/');
}
// Returns the Numeric Value of results Per Page
function lz_get_page($get = 'page', $resperpage = 50){
$resperpage = (!empty($_REQUEST['reslen']) && is_numeric($_REQUEST['reslen']) ? (int) lz_optreq('reslen') : $resperpage);
if(lz_optget($get)){
$pg = (int) lz_optget($get);
$pg = $pg - 1;
$page = ($pg * $resperpage);
$page = ($page <= 0 ? 0 : $page);
}else{
$page = 0;
}
return $page;
}
// Replaces the Variables with the supplied ones
function lz_lang_vars_name($str, $array){
foreach($array as $k => $v){
$str = str_replace('$'.$k, $v, $str);
}
return $str;
}
// Check if Loginizer is premium
function loginizer_is_premium(){
return defined('LOGINIZER_PREMIUM');
}
function loginizer_feature_available($feature = '', $return = 0){
if(loginizer_is_premium()){
return true;
}
$msg = '';
if(!empty($feature)){
$msg .= '<b>'.$feature.'</b> is available in the Pro version of Loginizer. ';
}
$msg .= '<a href="'.LOGINIZER_PRICING_URL.'" target="_blank" style="text-decoration:none; color:green;"><b>Upgrade to Pro</b></a>';
if(!empty($return)){
return $msg;
}else{
echo '<div style="color:#a94442; background-color:#f2dede; border-color:#ebccd1; padding:15px; margin-bottom:20px; border:1px solid transparent; border-radius:4px;">'.$msg.'</div>';
}
}
// Checks if the email is valid
function lz_valid_email($email){
return filter_var($email, FILTER_VALIDATE_EMAIL);
}