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<?php
# $Id: intercept.php 2238 2017-05-20 20:54:43Z tom.houdayer $
#
# intercept.php for ALCASAR captive portal
# Copyright (C) 2003, 2004 Mondru AB.
# Modify by REXY & steweb57
# UI & css style by stephane ERARD
# Help for language translation by B. AUBARD (thanks)

# The contents of this file may be used under the terms of the GNU
# General Public License Version 2, provided that the above copyright
# notice and this permission notice is included in all copies or
# substantial portions of the software.

# Redirects from CoovaChilli (chilli daemon) :
# Response to login:
  # success :   if login successful
  # failed :    if login failed
  # logoff :    if logout successful
  # already :   if tried to login while already logged in
  # notyet :    if not logged in yet
  # Default :   it was not a form request -> client go to login form

/****************************************************************
*                       GLOBAL FILE PATHS                       *
*****************************************************************/
define('CONF_FILE', '/usr/local/etc/alcasar.conf');
define('DOMAIN_ALLOWED_LIST', '/usr/local/etc/alcasar-uamdomain');

/****************************************************************
*                       FILE reading test                       *
*****************************************************************/
$conf_files = array(CONF_FILE, DOMAIN_ALLOWED_LIST);
foreach ($conf_files as $file) {
        if (!file_exists($file)) {
                exit("Fichier $file non présent");
        }
        if (!is_readable($file)) {
                exit("Vous n'avez pas les droits de lecture sur le fichier $file");
        }
}
/****************************************************************
*                       Read CONF_FILE                          *
*****************************************************************/
$file_conf = fopen(CONF_FILE, 'r');
if (!$file_conf) {
        exit('Error opening the file '.CONF_FILE);
}
while (!feof($file_conf)) {
        $buffer = fgets($file_conf, 4096);
        if ((strpos($buffer, '=') !== false) && (substr($buffer, 0, 1) !== '#')) {
                $tmp = explode('=', $buffer);
                $conf[$tmp[0]] = trim($tmp[1]);
        }
}
fclose($file_conf);

$organisme = $conf["ORGANISM"];

# Shared secret used to encrypt password with coova.
$uamsecret = "";

# URL loaded after success authenticates (let blank for browser defaults)
$adminurl = "";

# Our own path
$loginpath   = htmlspecialchars($_SERVER['PHP_SELF']);
$alcasarpath = 'http://'.$conf['HOSTNAME'].'.'.$conf['DOMAIN'];
$statuspath  = $alcasarpath.'/status.php';

# Choice of language
$Language = 'en';
if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
        $Langue = explode(",",$_SERVER['HTTP_ACCEPT_LANGUAGE']);
        $Language = strtolower(substr(chop($Langue[0]),0,2));
}
if ($Language === 'es') {               // Spanish
        $l_ChilliError                  = "La autenticación debe ser un éxito a través del servicio de portal cautivo.";
        $l_login                        = "El éxito de la autenticación.<HR>Cierre esta ventana interrumpte la sesion.";
        $l_logout                       = "Conexión de cierre";
        $l_loginfailed                  = "Error de autenticación";
        $l_loggingin                    = "Identificación en el portal cautivo";
        $l_loggedcont                   = "Control de Acceso";
        $l_loggedout                    = "Su sesión se cierra";
        $l_user                         = "Usuario";
        $l_password                     = "Contraseña";
        $l_wait                         = "Por favor, espere un momento ...";
        $l_onlinetime                   = "Tiempo de conexión:";
        $l_remainingtime                = "Desconexión en:";
        $l_encrypted                    = "La apertura debe usar conexión cifrada";
        $l_boutonO                      = "Autenticación";
        $l_boutonF                      = "Cerrar";
        $l_loggedin_stringl1            = "Information System Security";
        $l_loggedin_stringl2            = "El portal fue creado reglamentos para garantizar la trazabilidad, la rendición de cuentas y el no repudio de las conexiones.";
        $l_loggedin_stringl3            = "Su actividad en la red es registrada, de conformidad con la privacidad.";
        $l_loggedin_stringl4            = "Los datos registrados pueden ser capaces de ser operado por una autoridad judicial en el curso de una investigación.";
        $l_loggedin_stringl5            = "Estos datos se eliminan automáticamente después de un año.";
        $l_loggedin_stringl6            = "Click <a href='$alcasarpath'>here</a> to change your password or to integrate the security certificate in your browser";
        $l_loggedout_string             = "Cerrar sesión hizo portal cautivo!";
        $l_reply_1                      = "Your daily connexion time has been reached";
        $l_reply_2                      = "Your monthly connexion time has been reached";
        $l_reply_3                      = "You try to connect outside of your allowed timespan";
        $l_reply_4                      = "your account expired";
        $l_reply_5                      = "You have reached the maximum number of simultaneous logins";
        $l_reply_6                      = "Your authorized connexion time has been reached";
        $l_online_time                  = "Tiempo en linea";
        $l_remaining_time               = "Tiempo restante";
        $l_uam_domain                   = "Sitios web autorizados : ";
        $l_autoregistration             = "Registo autom&aacute;tico";
} else if ($Language === 'pt') {        // Portuguese
        $l_ChilliError                  = "A autenticação precisa ser bem sucedida através do portal.";
        $l_login                        = "Sucesso na autenticação.<HR>Matenha esse pop-up apenas minimizado para não interromper a conexão";
        $l_logout                       = "Encerrar conexão";
        $l_loginfailed                  = "Falha na autenticação";
        $l_loggingin                    = "Identificação do portal cativo";
        $l_loggedcont                   = "Controle de acesso";
        $l_loggedout                    = "Sua sessão foi fechada";
        $l_user                         = "Usuário";
        $l_password                     = "Senha";
        $l_wait                         = "Por favor, aguarde um momento ...";
        $l_onlinetime                   = "Tempo de conexão:";
        $l_remainingtime                = "Desconectado em:";
        $l_encrypted                    = "A conexão com o portal deve ser criptografada";
        $l_boutonO                      = "Autenticação";
        $l_boutonF                      = "Fechar";
        $l_loggedin_stringl1            = "Sistema de Informação e segurança";
        $l_loggedin_stringl2            = "Este controle foi criado para garantir acesso seguro.";
        $l_loggedin_stringl3            = "A autenticação será criptografada em 256 bits, impedindo captura por escâner de rede.";
        $l_loggedin_stringl4            = "Sua atividade na Internet será resguardada de acordo com os regulamentos da lei.";
        $l_loggedin_stringl5            = "Mantenha o popup da conexão minimizado para não interromper a cessão.";
        $l_loggedin_stringl6            = "Clique <a href='$alcasarpath'>aqui</a> para alterar sua senha, instalar certificado ou sair do portal.";
        $l_loggedout_string             = "desconexão do portal cativo";
        $l_reply_1                      = "Seu tempo de conexão diária foi finalizado";
        $l_reply_2                      = "Seu tempo de conexão mensal foi finalizado";
        $l_reply_3                      = "Você tenta conectar-se fora do seu período de tempo permitido";
        $l_reply_4                      = "Sua conta expirou";
        $l_reply_5                      = "Você atingiu o número máximo de logins simultâneos";
        $l_reply_6                      = "Seu tempo de conexão autorizada finalizou";
        $l_online_time                  = "Tempo Online";
        $l_remaining_time               = "Tempo restante";
        $l_uam_domain                   = "Sites autorizados : ";
        $l_autoregistration             = "Registo autom&aacute;tico";
} else if ($Language === 'zh') {        // Chinese
        $l_ChilliError                  = "验证必须通过强制门户服务";
        $l_login                        = "验证成功<HR>关闭此窗口中断连接";
        $l_logout                       = "关闭连接";
        $l_loginfailed                  = "验证失败";
        $l_loggingin                    = "强制门户身份识别";
        $l_loggedcont                   = "访问控制";
        $l_loggedout                    = "您的连接已关闭";
        $l_user                         = "用户名";
        $l_password                     = "密码";
        $l_wait                         = "请等待 ...";
        $l_onlinetime                   = "连接时间";
        $l_remainingtime                = "断开连接于";
        $l_encrypted                    = "与门户的连接必须加密";
        $l_boutonO                      = "验证";
        $l_boutonF                      = "关闭";
        $l_loggedin_stringl1            = "信息系统安全";
        $l_loggedin_stringl2            = "这种控制实施以法定保证可追溯性,可归罪性和连接的不否认性.";
        $l_loggedin_stringl3            = "您的网络活动是私密登记的.";
        $l_loggedin_stringl4            = "记录的数据能被司法机关在调查中操作使用.";
        $l_loggedin_stringl5            = "这些数据将在一年后自动删除.";
        $l_loggedin_stringl6            = "点击 <a href='$alcasarpath'> 这里 </a> 修改密码或安装浏览器安全证书";
        $l_loggedout_string             = "强制网络门户连接已断开";
        $l_reply_1                      = "您已经达到每日连接时间";
        $l_reply_2                      = "您已经达到每月连接时间";
        $l_reply_3                      = "您尝试在授权时间以外连接";
        $l_reply_4                      = "您的账号已过期";
        $l_reply_5                      = "您已经达到同时连接的最大数量";
        $l_reply_6                      = "已经到达您的允许连接时间";
        $l_online_time                  = "在线时间";
        $l_remaining_time               = "剩余时间";
        $l_uam_domain                   = "授权网站 : ";
        $l_autoregistration             = "短信注册";
} else if($Language === 'ar') {         // Arabic
        $l_ChilliError                  = "يجب نجاح المصادقة على البوابة الأسيرة";
        $l_login                        = "إغلاق هذه النافذة يقطع دورة عملك";
        $l_logout                       = "إغلاق الدورة";
        $l_loginfailed                  = "فشل المصادقة";
        $l_loggingin                    = "التعريف على البوابة الأسيرة";
        $l_loggedcont                   = "مراقبة الدخول";
        $l_loggedout                    = "دورتكَ مغلقة";
        $l_user                         = "التعريف";
        $l_password                     = "كلمة السر";
        $l_wait                         = "...إنتظر بعض اللحظات";
        $l_onlinetime                   = ":مدة الإتصال";
        $l_remainingtime                = ":انقطاع الإتصال في";
        $l_encrypted                    = "يجب تشفير الإتصال بالبوابة";
        $l_boutonO                      = "مصادقة";
        $l_boutonF                      = "أغلق";
        $l_loggedin_stringl1            = "سلامة نظم المعلومات";
        $l_loggedin_stringl2            = "وُضعت هذه المراقبة للضمان القانوني لتتبع ومساءلة وعدم تنصل الإتصالات";
        $l_loggedin_stringl3            = "نشاطك على الشبكة مسجل وفقاً لاحترام الحريات الشخصية";
        $l_loggedin_stringl4            = "لا يمكن استغلال البيانات المسجلة إلاّ من قِبل سلطات التحقيق القضائ";
        $l_loggedin_stringl5            = "سيتم حدف هذه البيانات تلقائياً بعد سنة من الْيَوْمَ";
        $l_loggedin_stringl6            = "لتغيير كلمة السر أو شهادة الأمان <a href='$alcasarpath'>هنا</a> اضغط ";
        $l_loggedout_string             = "تَمّ قطع الإتصال بالبوابة الأسيرة";
        $l_reply_1                      = "انتهى وقتك اليومي للإتصال";
        $l_reply_2                      = "انتهى وقتك الشهري للإتصال";
        $l_reply_3                      = "محاولة اتصال خارج فترتك المأذونة";
        $l_reply_4                      = "انتهت مدة صلاحية حسابك";
        $l_reply_5                      = "لقد استكملت العدد الأقصى للإتصالات المتزامنة";
        $l_reply_6                      = "استكملت مذة الإتصال المسموحة";
        $l_online_time                  = "مذة الإتصال";
        $l_remaining_time               = "الوقت المتبق";
        $l_uam_domain                   = ":المواقع المسموحة ";
        $l_autoregistration             = "تسجيل ذاتي (SMS)";
} else if($Language === 'de') {         // German
        $l_ChilliError                  = "Die Authentifizierung ist erfolgreich durch die Nutzung des Portals erfolgt.";
        $l_login                        = "Erfolgreiche Authentifizierung.<HR>Schlißen dieses fensters unterbricht die sitzung";
        $l_logout                       = "Beenden der Verbindung";
        $l_loginfailed                  = "Authentifizierungsfehler Eigenverbrauch";
        $l_loggingin                    = "Kennzeichnung auf dem Eigenverbrauch";
        $l_loggedcont                   = "Zutrittskontrolle";
        $l_loggedout                    = "Ihre Sitzung ist geschlossen";
        $l_user                         = "Benutzer";
        $l_password                     = "Passwort";
        $l_wait                         = "Bitte warten Sie einen Moment ...";
        $l_onlinetime                   = "Online-Zeit:";
        $l_remainingtime                = "Abmelden:";
        $l_encrypted                    = "Die Öffnung muß der Anschluß Zahlen";
        $l_boutonO                      = "Authentifizierung";
        $l_boutonF                      = "Schließen";
        $l_loggedin_stringl1            = "Information System Security";
        $l_loggedin_stringl2            = "Dieses Portal wurde eingerichtet, um ordnungsgemäß die Rückverfolgbarkeit, der Zurechenbarkeit und der Nicht-Anerkennung der Verbindungen.";
        $l_loggedin_stringl3            = "Ihre Tätigkeit im Netzwerk registriert ist nach Schutz der Privatsphäre.";
        $l_loggedin_stringl4            = "Die gespeicherten Daten nicht pouront genutzt werden, dass von einer Justizbehörde im Rahmen einer Untersuchung.";
        $l_loggedin_stringl5            = "Diese Daten werden automatisch gelöscht nach einem Jahr.";
        $l_loggedin_stringl6            = "Click <a href='$alcasarpath'>here</a> to change your password or to integrate the security certificate in your browser";
        $l_loggedout_string             = "Trennung des Portals erfolgt Gefangener!";
        $l_reply_1                      = "Your daily connexion time has been reached";
        $l_reply_2                      = "Your monthly connexion time has been reached";
        $l_reply_3                      = "You try to connect outside of your allowed timespan";
        $l_reply_4                      = "your account expired";
        $l_reply_5                      = "You have reached the maximum number of simultaneous logins";
        $l_reply_6                      = "Your authorized connexion time has been reached";
        $l_online_time                  = "Online-zeit";
        $l_remaining_time               = "Restzeit";
        $l_uam_domain                   = "Autorisierten websites : ";
        $l_autoregistration             = "Automatische registrierung";
} else if($Language === 'nl') {         // Dutch
        $l_ChilliError                  = "De authenticatie moet een succes worden via de captive portal dienst.";
        $l_login                        = "Succesvolle authenticatie.<HR>Dit venster te sluiten onderbreekt uw sessie.";
        $l_logout                       = "Slotkoers verbinding";
        $l_loginfailed                  = "Authenticatie mislukt";
        $l_loggingin                    = "Identificatie van de captive-portaal";
        $l_loggedcont                   = "toegangscontrole";
        $l_loggedout                    = "Uw sessie is gesloten";
        $l_user                         = "Gebruiker";
        $l_password                     = "Wachtwoord";
        $l_wait                         = "Wacht een moment ...";
        $l_onlinetime                   = "Sluit tijd:";
        $l_remainingtime                = "Verbreking in:";
        $l_encrypted                    = "De opening moet gebruiken gecodeerde verbinding";
        $l_boutonO                      = "Authenticatie";
        $l_boutonF                      = "Sluiten";
        $l_loggedin_stringl1            = "Information System Security";
        $l_loggedin_stringl2            = "Het portaal werd opgericht verordeningen om de traceerbaarheid, verantwoordelijkheid en onloochenbaarheid van de verbindingen.";
        $l_loggedin_stringl3            = "Uw activiteit op het netwerk is geregistreerd in overeenstemming met de persoonlijke levenssfeer.";
        $l_loggedin_stringl4            = "De geregistreerde gegevens kunnen worden kunnen worden bediend door een rechterlijke instantie in de loop van een onderzoek.";
        $l_loggedin_stringl5            = "Deze gegevens worden automatisch verwijderd na een jaar.";
        $l_loggedin_stringl6            = "Click <a href='$alcasarpath'>here</a> to change your password or to integrate the security certificate in your browser";
        $l_loggedout_string             = "Logout gemaakt intern portaal!";
        $l_reply_1                      = "Your daily connexion time has been reached";
        $l_reply_2                      = "Your monthly connexion time has been reached";
        $l_reply_3                      = "You try to connect outside of your allowed timespan";
        $l_reply_4                      = "your account expired";
        $l_reply_5                      = "You have reached the maximum number of simultaneous logins";
        $l_reply_6                      = "Your authorized connexion time has been reached";
        $l_online_time                  = "Online tijd";
        $l_remaining_time               = "Reterende tijd";
        $l_uam_domain                   = "Geautoriseerde website : ";
        $l_autoregistration             = "Automatische registratie";
} else if($Language === 'fr') {         // French
        $l_ChilliError                  = "L'authentification doit être réussie sur le portail captif.";
        $l_login                        = "Authentification réussie.<HR>La fermeture de cette fenêtre interrompt votre session.";
        $l_logout                       = "Fermeture de la session";
        $l_loginfailed                  = "Echec d'authentification";
        $l_loggingin                    = "Identification sur le portail captif";
        $l_loggedcont                   = "Contrôle d'accès";
        $l_loggedout                    = "Votre session est fermée";
        $l_user                         = "Identifiant";
        $l_password                     = "Mot de passe";
        $l_wait                         = "Patientez un instant ...";
        $l_onlinetime                   = "Temps de connexion:";
        $l_remainingtime                = "Deconnexion dans :";
        $l_encrypted                    = "La connexion avec le portail doit être chiffrée";
        $l_boutonO                      = "Authentification";
        $l_boutonF                      = "Fermer";
        $l_loggedin_stringl1            = "Sécurité des Systèmes d'Information";
        $l_loggedin_stringl2            = "Ce contrôle a été mis en place pour assurer réglementairement la traçabilité, l'imputabilité et la non-répudiation des connexions.";
        $l_loggedin_stringl3            = "Votre activité sur le réseau est enregistrée conformément au respect de la vie privée.";
        $l_loggedin_stringl4            = "Les données enregistrées ne pourront être exploitées que par une autorité judiciaire dans le cadre d'une enquête.";
        $l_loggedin_stringl5            = "Ces données seront automatiquement supprimées au bout d'un an.";
        $l_loggedin_stringl6            = "Cliquez <a href='$alcasarpath'>ici</a> pour changer votre mot de passe ou pour intégrer le certificat de sécurité à votre navigateur";
        $l_loggedout_string             = "Déconnexion du portail captif effectuée !";
        $l_reply_1                      = "Votre durée de connexion journalière a été atteinte";
        $l_reply_2                      = "Votre durée de connexion mensuelle a été atteinte";
        $l_reply_3                      = "Vous tentez de vous connecter en dehors de votre période autorisée";
        $l_reply_4                      = "Votre compte a expiré";
        $l_reply_5                      = "Vous avez atteint le nombre maximum de connexions simultanées";
        $l_reply_6                      = "Votre durée de connexion autorisée a été atteinte";
        $l_online_time                  = "Temps de connexion";
        $l_remaining_time               = "Temps restant";
        $l_uam_domain                   = "Sites autorisés : ";
        $l_autoregistration             = "Auto enregistrement (sms)";
} else {                                // English
        $l_ChilliError                  = "The authentication must be successful through the captive portal service.";
        $l_login                        = "Successful authentication.<HR>Closing this window interrupts your session";
        $l_logout                       = "Closing connection";
        $l_loginfailed                  = "Authentication Failed";
        $l_loggingin                    = "Identification on the captive portal";
        $l_loggedcont                   = "Access Control";
        $l_loggedout                    = "Your session is closed";
        $l_user                         = "User";
        $l_password                     = "Password";
        $l_wait                         = "Please wait a moment ...";
        $l_onlinetime                   = "Connect time:";
        $l_remainingtime                = "Disconnection in:";
        $l_encrypted                    = "The connection with the portal must be encrypted";
        $l_boutonO                      = "Authentication";
        $l_boutonF                      = "Close";
        $l_loggedin_stringl1            = "Information System Security";
        $l_loggedin_stringl2            = "That control was set up regulations to ensure traceability, accountability and non-repudiation of connections.";
        $l_loggedin_stringl3            = "Your activity on the network is registered in accordance with privacy.";
        $l_loggedin_stringl4            = "The recorded data can be able to be operated by a judicial authority in the course of an investigation.";
        $l_loggedin_stringl5            = "These data will be automatically deleted after one year.";
        $l_loggedin_stringl6            = "Click <a href='$alcasarpath'>here</a> to change your password or to integrate the security certificate in your browser";
        $l_loggedout_string             = "Disconnection of the captive portal made";
        $l_reply_1                      = "Your daily connexion time has been reached";
        $l_reply_2                      = "Your monthly connexion time has been reached";
        $l_reply_3                      = "You try to connect outside of your allowed timespan";
        $l_reply_4                      = "your account expired";
        $l_reply_5                      = "You have reached the maximum number of simultaneous logins";
        $l_reply_6                      = "Your authorized connexion time has been reached";
        $l_online_time                  = "Online time";
        $l_remaining_time               = "Remaining time";
        $l_uam_domain                   = "Authorized websites : ";
        $l_autoregistration             = "Auto registration (sms)";
}

# If https not use, tell it's wrong
if ((!isset($_SERVER['HTTPS'])) || (empty($_SERVER['HTTPS'])) || ($_SERVER['HTTPS'] === 'off')) {
        // Cleaning the cache
        header('Expires: Tue, 01 Jan 2000 00:00:00 GMT');
        header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
        header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
        header('Cache-Control: post-check=0, pre-check=0', false);
        header('Pragma: no-cache');
        ?>
        <!DOCTYPE html>
        <html>
        <head>
                <meta charset="utf-8">
                <title><?= $l_loggedcont ?></title>
        </head>
        <body style="background-color: white;">
                <h1 style="text-align: center;"><?= $l_loginfailed ?></h1>
                <center><?= $l_encrypted ?></center> 
        </body>
        </html>
        <?php
        exit();
}

# Read form parameters which we care about
# avoid the "user as a MAC address" attempts
if ((isset($_POST['UserName'])) && (preg_match('/^([0-9A-F]{2}-){5}[0-9A-F]{2}$/', $_POST['UserName']) !== 1))
                                $username       = htmlspecialchars($_POST['UserName']);         else $username = '';
if (isset($_POST['Password']))  $password       = htmlspecialchars($_POST['Password']);         else $password = '';
if (isset($_POST['challenge']))$challenge       = htmlspecialchars($_POST['challenge']);        else $challenge = '';
if (isset($_POST['button']))    $button         = htmlspecialchars($_POST['button']);           else $button = '';
// if (isset($_POST['logout'])) $logout         = htmlspecialchars($_POST['logout']);           else $logout = '';
// if (isset($_POST['prelogin']))       $prelogin       = htmlspecialchars($_POST['prelogin']);         else $prelogin = '';
if (isset($_POST['res']))       $res            = htmlspecialchars($_POST['res']);              else $res = '';
if (isset($_POST['uamip']))     $uamip          = htmlspecialchars($_POST['uamip']);            else $uamip = '';
if (isset($_POST['uamport']))   $uamport        = htmlspecialchars($_POST['uamport']);          else $uamport = '';
if (isset($_POST['userurl']))   $userurl        = htmlspecialchars($_POST['userurl']);          else $userurl = '';
if (isset($_POST['timeleft']))  $timeleft       = htmlspecialchars($_POST['timeleft']);         else $timeleft = '';
if (isset($_POST['redirurl']))  $redirurl       = htmlspecialchars($_POST['redirurl']);         else $redirurl = '';

# Read query parameters which we care about
if (isset($_GET['res']))        $res            = htmlspecialchars($_GET['res']);
if (isset($_GET['challenge']))  $challenge      = htmlspecialchars($_GET['challenge']);
if (isset($_GET['uamip']))      $uamip          = htmlspecialchars($_GET['uamip']);
if (isset($_GET['uamport']))    $uamport        = htmlspecialchars($_GET['uamport']);
if (isset($_GET['reply']))      $reply          = htmlspecialchars($_GET['reply']);             else $reply = '';
if (isset($_GET['userurl']))    $userurl        = htmlspecialchars($_GET['userurl']);
if (isset($_GET['timeleft']))   $timeleft       = htmlspecialchars($_GET['timeleft']);
if (isset($_GET['redirurl']))   $redirurl       = htmlspecialchars($_GET['redirurl']);

# translation of radius replies
if (isset($reply)) {
        switch (trim($reply)) {
                case 'Your maximum daily usage time has been reached'   : $reply = $l_reply_1; break;
                case 'Your maximum monthly usage time has been reached' : $reply = $l_reply_2; break;
                case 'You are calling outside your allowed timespan'    : $reply = $l_reply_3; break;
                case 'Password Has Expired'                             : $reply = $l_reply_4; break;
                case 'You are already logged in - access denied'        : $reply = $l_reply_5; break;
                case 'Your maximum never usage time has been reached'   : $reply = $l_reply_6; break;
        }
}

// If attempt to login
if ($button === $l_boutonO) {
        //correction password length in coova-chilli
        //thanks to http://www.stochasticgeometry.ie/2009/09/09/maximum-password-length-in-coova-chilli/
        $hexchal = pack('H*', $challenge);
        $newchal = pack('H*', md5($hexchal . $uamsecret));

        // If challenge isn't long enough, repeat it until it is
        while (strlen($newchal) < strlen($password)) {
                $newchal .= $newchal;
        }

        $newpwd   = pack('a*', $password);
        // Encode plain text password with challenge
        $pappassword = implode('', unpack('H*', ($newpwd ^ $newchal)));


        // Cleaning the cache
        header('Expires: Tue, 01 Jan 2000 00:00:00 GMT');
        header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
        header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
        header('Cache-Control: post-check=0, pre-check=0', false);
        header('Pragma: no-cache');

        header('Location: http://$uamip:$uamport/logon?username=$username&password=$pappassword&userurl=$userurl');
        ?>
        <!DOCTYPE html>
        <html>
        <head>
                <meta charset="utf-8">
                <title><?= $l_loggingin ?></title>
                <meta http-equiv="refresh" content="0;url=<?= "http://$uamip:$uamport/logon?username=$username&password=$pappassword&userurl=$userurl" ?>">
        </head>
        <body style="background-color: white;">
                <h1 style="text-align: center;"><?= $l_loggingin ?></h1>
                <center><?= $l_wait ?></center> 
        </body>
        </html>
        <?php
        exit();
}

switch($res) {
        case 'success': $result = 1; break; // If login successful
        case 'failed':  $result = 2; break; // If login failed
        case 'logoff':  $result = 3; break; // If logout successful
        case 'already': $result = 4; break; // If tried to login while already logged in
        case 'notyet':  $result = 5; break; // If not logged in yet
        default:        $result = 0; // Default: It was not a form request -> client go to login form
}

//check if we need to warn user about the imputability logs.
if($result === 1) {
        if ((is_file('./acc/manager/lib/sql/drivers/mysql/functions.php')) && (is_file('/etc/freeradius-web/config.php'))) {
                include_once('/etc/freeradius-web/config.php');
                include_once('./acc/manager/lib/sql/drivers/mysql/functions.php');
                $link = @da_sql_pconnect($config); // on affiche pas les erreurs
                if ($link) {
                        $user_uid = da_sql_escape_string($link, $_GET['uid']);
                        $sql = "SELECT attribute, value FROM radreply WHERE username='$user_uid' AND attribute='Filter-Id'";
                        $res = @da_sql_query($link, $config, $sql); // on affiche pas les erreurs
                        if ($res) {
                                $row = @da_sql_fetch_array($res, $config);
                                $filter_id = $row['value']; // on obtient le Filter-Id de l'utilisateur
                                if($filter_id[3] === '1') {
                                        //set the fourth bit of filter-id to '0'
                                        $sql = "set @CurrentFilter=(SELECT value from radreply where username='$user_uid');set @CurrentFilterLeft=(SELECT LEFT(@CurrentFilter,3));set @CurrentFilterRight=(SELECT RIGHT(@CurrentFilter,4));UPDATE radreply SET value = CONCAT((@CurrentFilterLeft),'0', (@CurrentFilterRight)) WHERE username='$user_uid'";
                                        $res = mysqli_multi_query($link,$sql);
                                        header('Location: https://'.$conf['HOSTNAME'].'.'.$conf['DOMAIN'].'/index.php?warn=1&url='.urlencode($_GET['userurl']));   //we present to user information about imputability logs 
                                        exit();
                                }
                        }
                }
        }
}


// Otherwise it was not a form request
// Send out an error message
if ($result === 0) {    //erreur
        // Cleaning the cache
        header('Expires: Tue, 01 Jan 2000 00:00:00 GMT');
        header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
        header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
        header('Cache-Control: post-check=0, pre-check=0', false);
        header('Pragma: no-cache');

        header('Location: http://$uamip:$uamport/prelogin');
        ?>
        <!DOCTYPE html>
        <html>
        <head>
                <meta charset="utf-8">
                <title><?= $l_loggingin ?></title>
                <meta http-equiv="refresh" content="0;url=<?= "http://$uamip:$uamport/prelogin" ?>">
        </head>
        <body style="background-color: white;">
                <h1 style="text-align: center;"><?= $l_loggingin ?></h1>
                <center><?= $l_wait ?></center> 
        </body>
        </html>
        <?php
        exit();
}

// Cleaning the cache
header('Expires: Tue, 01 Jan 2000 00:00:00 GMT');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
header('Cache-Control: post-check=0, pre-check=0', false);
header('Pragma: no-cache');
?>
<!DOCTYPE html>
<html>
<head>
        <meta charset="utf-8">
        <title><?= $l_loggingin ?></title>
        <script type="text/javascript">
        function doOnLoad(result, userurl, redirurl, adminurl, timeleft) {
                if ((result === 1) || (result === 4)) { //success or already
                        var url;
                        if (adminurl !== '') {
                                url = adminurl;
                        } else if (redirurl !== '') {
                                url = redirurl;
                        } else if (userurl !== '') {
                                url = userurl;
                        }

                        if (typeof url !== 'undefined') {
                                var win = window.open(url, '_blank');
                                if (win !== null) {
                                        win.focus();
                                }
                        }

                        // Redirect to status page
                        window.location = '<?= $statuspath ?>';
                }
                if ((result === 2) || (result === 3) || result === 5) { //failed or logoff or notyet
                        document.form1.UserName.focus();
                }
        }
        </script>
        <link rel="stylesheet" href="/css/style_intercept.css" type="text/css">
</head>
<body onLoad="javascript:doOnLoad(<?= $result ?>,'<?= $userurl ?>','<?= $redirurl ?>','<?= $adminurl ?>','<?= $timeleft ?>')">
        <center>

        <?php if ($result === 2 || $result === 3 || $result === 5): //failed or logoff or notyet ?>
        <div id="logon">
                <h1><?= $organisme ?></h1>
                <h2><?= $l_loggedcont ?></h2>
                <?php if ($result === 2): //failed ?>
                        <h3><?= $l_loginfailed ?></h3>
                        <?php if ($reply): //traitement du reply ... ?>
                                <center><?= $reply ?><br><br></center>
                        <?php endif; ?>
                <?php endif;
                if ($userurl === 'http://logout/') $userurl = 'http://www.google.com'; // Avoid cyclic logout
                ?>
                <img id="logo-alcasar" src="/images/logo-alcasar.png">
                <form name="form1" method="post" action="<?= $loginpath ?>">
                        <input type="hidden" name="challenge" value="<?= $challenge ?>">
                        <input type="hidden" name="uamip" value="<?= $uamip ?>">
                        <input type="hidden" name="uamport" value="<?= $uamport ?>">
                        <input type="hidden" name="userurl" value="<?= $userurl ?>">
                        <table id="boite-logon">
                                <tr>
                                        <td width="20%" rowspan="4"><img id="logo-organ" src="/images/organisme.png"></td>
                                        <td width="30%" align="right"><?= $l_user ?></td>
                                        <td width="50%" align="left"><input type="text" maxLength="32" name="UserName" autocomplete="off"></td>
                                </tr>
                                <tr>
                                        <td align="right"><?= $l_password ?></td>
                                        <td align="left"><input maxLength="32" type="password" name="Password" autocomplete="off"></td>
                                </tr>
                                <tr>
                                        <td height="23" align="left"><input value="<?= $l_boutonO ?>" type="submit" name="button"></td>
                                        <?php
                                        $service_SMS_status = false;
                                        if ($service_SMS_status): ?>
                                                <td><a href="./autoregistrationinfo.php"><?= $l_autoregistration ?></a></td>
                                        <?php endif; ?>
                                </tr>
                        </table>
                </form>
                <table id="boite-info" cellSpacing="0" cellPadding="0" width="80%">
                        <tr>
                                <td align="center"><font color="red"><b><?= $l_loggedin_stringl1 ?></b></font></td>
                        </tr>
                        <tr>
                                <td align="left">
                                        <ul>
                                                <li><?= $l_loggedin_stringl2 ?></li>
                                                <li><?= $l_loggedin_stringl4 ?></li>
                                                <li><?= $l_loggedin_stringl3 ?></li>
                                                <li><?= $l_loggedin_stringl5 ?></li>
                                                <li><?= $l_loggedin_stringl6 ?></li>
                                        </ul>
                                </td>
                        </tr>
                </table>
                <?php
                // Read the "Domain allowed" file
                $tab = file(DOMAIN_ALLOWED_LIST);
                if ($tab) { // the file isn't empty
                        echo '<div id="authorized_domain">'.$l_uam_domain;
                        foreach ($tab as $line) {
                                if (trim($line) !== '') { // the line isn't empty
                                        $domain_allowed = explode('#', $line);
                                        if (trim($domain_allowed[1]) !== '') {
                                                $domain = explode('"', $domain_allowed[0]);
                                                // remove every '.' from the beginning of domain
                                                $domain[1] = ltrim($domain[1], '.');
                                                echo '<a href="http://'.trim($domain[1]).'">'.trim($domain_allowed[1]).'</a>  ';
                                        }
                                }
                        }
                        echo '</div>';
                }
                ?>
        </div>
        <?php endif; ?>

        </center>
</body>
</html>