Alcasar auto with mac

<?php
$remote_ip=$_SERVER['REMOTE_ADDR'];
/*****************************************************************/
if(!defined("CONF_FILE"))
    define("CONF_FILE", "/usr/local/etc/alcasar.conf");
/****************************************************************
* *         FILE reading test           *
* ****************************************************************/
$conf_files=array(CONF_FILE);
foreach ($conf_files as $file){
    if (!file_exists($file))
        exit("Fichier ".$file." introuvable");
    if (!is_readable($file))
        exit("Acc&egrave;s impossible &agrave;: ".$file);
}
/****************************************************************
* *         Read CONF_FILE              *
* *****************************************************************/
$ouvre=fopen(CONF_FILE,"r");
if ($ouvre){
    while (!feof ($ouvre)){
        $tampon = fgets($ouvre, 4096);
        if (strpos($tampon,"=")!==false){
            $tmp = explode("=",$tampon);
            $conf[$tmp[0]] = $tmp[1];
        }
    }
}
else{
    exit("Fichier inaccessible: ".CONF_FILE);
}
fclose($ouvre);
$organisme = trim($conf["ORGANISM"]);
$domainname = trim($conf["DOMAIN"]);
$hostname = trim($conf['HOSTNAME']).".{$domainname}";
$tabs=Array();
exec("sudo /usr/sbin/chilli_query list", $tabs);
// DHCP_TABLE is activity detected from Ethernet received trame and don't use DHCP
foreach($tabs as $k => $v){
    $r=explode(' ', $v);
    $dhcp_table['mac'][]=$r[0];
    $dhcp_table['ip'][]=$r[1];
    $dhcp_table['is_connected'][]=$r[4];
}

if(isset($_SERVER['HTTP_HOST'])){
    if(
        ($_SERVER['HTTP_HOST'] == $_SERVER['SERVER_ADDR'])
        || (preg_match("/^127.0.0.1$/", $_SERVER['HTTP_HOST'])
    ) || (preg_match ("/^$hostname$/", $_SERVER['HTTP_HOST'])) || (preg_match ("/^$organisme$/", $_SERVER['HTTP_HOST']))){
        $direct_access=True;
        exec("sudo /usr/sbin/ipset del not_auth_yet $remote_ip");
    }
}

if(!in_array($remote_ip, $dhcp_table['ip'])){
    echo 'Vous avez forc&eacute; les r&eacute;glages de votre &eacute;quipement, merci d\'activer le DHCP';
}
else{
    $match_key=array_search($remote_ip, $dhcp_table['ip']);
    $LIBpath = "./acc/manager/lib/";
    require('/etc/freeradius-web/config.php');
    if (is_file($LIBpath."sql/drivers/{$config['sql_type']}/functions.php")){
        include_once($LIBpath."sql/drivers/{$config['sql_type']}/functions.php");
    }
    else{
        echo "Impossible de poursuivre [ERR BDD LIB]\n";
        exit();
    }
    include_once($LIBpath.'functions.php');
    if ($config['sql_use_operators'] == 'true'){
        include_once($LIBpath."operators.php");
        $text = ',op';
        $passwd_op = ",':='";
    }
    $link = @da_sql_pconnect($config);
}
if(is_file($LIBpath."crypt/{$config['general_encryption_method']}.php")){
    include_once($LIBpath."crypt/{$config['general_encryption_method']}.php");
    $login = $dhcp_table['mac'][$match_key];
    $group = 'Clients';
    $password = 'password';
    if ($login != ''){
        $login = da_sql_escape_string($link,$login);
        $passwd = da_sql_escape_string($link,$passwd);
        $passwd = da_encrypt($password);

        if ($config['sql_use_user_info_table'] == 'true' && !$da_abort){
            $res = @da_sql_query($link,$config, "SELECT username FROM {$config['sql_user_info_table']} WHERE username = '$login';");
            if ($res){
                if (!@da_sql_num_rows($res,$config)){ // l'utilisateur n'existe pas
                    $res = @da_sql_query($link,$config,"INSERT INTO {$config['sql_check_table']} (attribute,value,username $text) VALUES ('{$config['sql_password_attribute']}','$passwd','$login' $passwd_op);");
                    if (!$res || !@da_sql_affected_rows($link,$res,$config)){
                        $da_abort=1;
                    }
                    $res = @da_sql_query($link,$config,"INSERT INTO {$config['sql_user_info_table']} (username) VALUES ('$login');");
                    if (!$res || !@da_sql_affected_rows($link,$res,$config))
                        echo ""; // <b>Could not add user information in user info table: " . da_sql_error($link,$config) . "</b><br>\n";
                }
            }
            if ($group != ''){
                $group = da_sql_escape_string($link,$group);
                $res = @da_sql_query($link,$config,"SELECT username FROM {$config['sql_usergroup_table']} WHERE username = '$login' AND groupname = '$group';");
                if ($res){
                    if (!@da_sql_num_rows($res,$config)){
                        $res = @da_sql_query($link,$config,"INSERT INTO {$config['sql_usergroup_table']} (username,groupname) VALUES ('$login','$group');");
                        if (!$res || !@da_sql_affected_rows($link,$res,$config))
                            echo ""; // <b>Could not add user to group $group. SQL Error</b><br>\n";
                        else
                            exec('sudo service chilli reload');
                    }
                }
            }
        }
    }
}
?>