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<?php
# $Id: intercept.php 3026 2022-06-30 21:53:54Z rexy $
#
# intercept.php for ALCASAR captive portal
# By Mondru AB.
# Modify by Rexy & steweb57
# UI & css style by Stéphane ERARD & Alexandre VEZIN
# 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, 2);
                $conf[trim($tmp[0])] = trim($tmp[1]);
        }
}
fclose($file_conf);

$organisme = $conf["ORGANISM"];
$service_SMS_status = ($conf['SMS'] === 'on');
$service_Email_status = ($conf['MAIL'] === 'on');
$service_wifi4eu_status = ($conf['WIFI4EU'] === 'on');
$service_wifi4eu_code = $conf['WIFI4EU_CODE'];
$service_wifi4eu_server = 'https://collection.wifi4eu.ec.europa.eu/wifi4eu.min.js';

// 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']);
$useHTTPS = ((isset($_SERVER['HTTPS'])) && (!empty($_SERVER['HTTPS'])) && ($_SERVER['HTTPS'] !== 'off'));
$alcasarpath = (($useHTTPS) ? 'https' : 'http' ).'://'.$conf['HOSTNAME'].'.'.$conf['DOMAIN'];
$statuspath = (($conf['HTTPS_CHILLI'] === 'on') ? 'https' : 'http' ).'://'.$conf['HOSTNAME'].'.'.$conf['DOMAIN'].'/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                        = "Autenticación exitosa.<HR>Cerrar ésta ventana interrumpe la sesión.";
        $l_logout                       = "Finalice la conexión";
        $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 conexión con el portal apertura debe ser cifrada (https)";
        $l_boutonO                      = "Autenticación";
        $l_boutonF                      = "Cerrar";
        $l_loggedin_stringl1            = "Información del Sistema de Seguridad";
        $l_loggedin_stringl2            = "El portal fue creado 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 criterios de privacidad.";
        $l_loggedin_stringl4            = "Los datos registrados pueden ser solicitados y suministrados a 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\">aquí</a> para cambiar su contraseña o para instalar el certificado de seguridad en su navegador";
        $l_loggedout_string             = "Desconectado del portal cautivo!";
        $l_reply_0                      = "Nombre de usuario o contraseña incorrectos";
        $l_reply_1                      = "Su cuota diaria ha sido alcanzada (duración o volumen)";
        $l_reply_2                      = "Su cuota mensual ha sido alcanzada (duración o volumen)";
        $l_reply_3                      = "Intenta conectarse fuera de su intervalo de tiempo permitido";
        $l_reply_4                      = "su cuenta expiró";
        $l_reply_5                      = "Ha alcanzado el número máximo de inicios de sesión simultáneos";
        $l_reply_6                      = "Se ha alcanzado su tiempo de conexión autorizado";
        $l_online_time                  = "Tiempo en linea";
        $l_remaining_time               = "Tiempo restante";
        $l_uam_domain                   = "Sitios de libre acceso : ";
        $l_sms_registration             = "Registro por SMS";
        $l_email_registration           = "Registro por E-mail";
} else if ($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 (https)";
        $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_0                      = "Nome de usuário ou senha incorretos";
        $l_reply_1                      = "Sua cota diária foi alcançada (duração ou volume)";
        $l_reply_2                      = "Sua cota mensal foi atingida (duração ou volume)";
        $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                   = "Sítios de acesso livre : ";
        $l_sms_registration             = "Registo por SMS";
        $l_email_registration           = "Registro por E-mail";
} else if ($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 (https)";
        $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_0                      = "用户名或密码无效";
        $l_reply_1                      = "您的每日配额已达到(持续时间或数量) ";
        $l_reply_2                      = "已达到每月配额(持续时间或数量)";
        $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                   = " : ";
        $l_sms_registration             = "SMSで登録する";
        $l_email_registration           = "メールでの登録";
} else if ($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 (https)";
        $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_0                      = "اسم المستخدم أو كلمة المرور غير صالحة";
        $l_reply_1                      = "تم الوصول إلى حصتك اليومية (المدة أو الحجم)";
        $l_reply_2                      = "تم الوصول إلى حصتك الشهرية (المدة أو الحجم)";
        $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                   = "مواقع الوصول المجاني";
        $l_sms_registration             = "التسجيل عن طريق الرسائل القصيرة";
        $l_email_registration           = "التسجيل عن طريق البريد الإلكتروني";
} else if ($Language === 'de') {        // German
        $l_ChilliError                  = "Sie wurden erfolgreich durch das Portal authentifiziert.";
        $l_login                        = "Erfolgreiche Authentifizierung.<HR>Schlißen dieses fensters unterbricht die Sitzung";
        $l_logout                       = "Beenden der Verbindung";
        $l_loginfailed                  = "Authentifizierungsfehler";
        $l_loggingin                    = "Authentifizierung auf dem Portal";
        $l_loggedcont                   = "Zugangskontrolle";
        $l_loggedout                    = "Ihre Sitzung wurde geschlossen";
        $l_user                         = "Benutzer";
        $l_password                     = "Passwort";
        $l_wait                         = "Bitte warten Sie einen Moment ...";
        $l_onlinetime                   = "Online-Zeit:";
        $l_remainingtime                = "Abmelden:";
        $l_encrypted                    = "Die Verbindung muss verschlüsselt sein (https)";
        $l_boutonO                      = "Authentifizierung";
        $l_boutonF                      = "Schließen";
        $l_loggedin_stringl1            = "Information System Security";
        $l_loggedin_stringl2            = "Dieses Portal wurde eingerichtet, um ordnungsgemäß die Rückverfolgbarkeit, die Zurechenbarkeit und die Nicht-Abstreitbarkeit der Verbindungen zu sichern.";
        $l_loggedin_stringl3            = "Ihre Tätigkeiten im Netzwerk werden im Hinblick auf den Schutz Ihrer Privatsphäre gespeichert.";
        $l_loggedin_stringl4            = "Die gespeicherten Daten können von einer Justizbehörde im Falle einer Untersuchung genutzt werden.";
        $l_loggedin_stringl5            = "Diese Daten werden nach einem Jahr automatisch gelöscht.";
        $l_loggedin_stringl6            = "Klicken Sie <a href=\"$alcasarpath\">hier</a> um Ihr Password zu ändern oder das Sicherheitszertifikat für Ihren Browser herunterzuladen";
        $l_loggedout_string             = "Sie wurden vom Portal getrennt!";
        $l_reply_0                      = "Falscher Benutzername oder falsches Passwort";
        $l_reply_1                      = "Ihr Tageskontingent wurde erreicht (Dauer oder Volumen)";
        $l_reply_2                      = "Ihr monatliches Kontingent wurde erreicht (Dauer oder Volumen)";
        $l_reply_3                      = "Sie haben versucht sich außerhalb der erlaubten Zeiten zu verbinden";
        $l_reply_4                      = "Ihr Account ist abgelaufen";
        $l_reply_5                      = "Sie haben die maximale Anzahl an simultanen Verbindungen erreicht";
        $l_reply_6                      = "Ihre maximale Verbindungszeit wurde erreicht";
        $l_online_time                  = "Online-Zeit";
        $l_remaining_time               = "Verbleibende Zeit";
        $l_uam_domain                   = "Offen zugängliche Seiten : ";
        $l_sms_registration             = "Per SMS anmelden";
        $l_email_registration           = "Per E-Mail anmelden";
} else if ($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 (https)";
        $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_0                      = "Ongeldige gebruikersnaam of wachtwoord";
        $l_reply_1                      = "Uw dagelijkse quotum is bereikt (duur of volume)";
        $l_reply_2                      = "Je maandelijkse quotum is bereikt (duur of volume)";
        $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                   = "Sites met open toegang : ";
        $l_sms_registration             = "Registreren per SMS";
        $l_email_registration           = "Registreer per E-mail";
} else if ($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 (https)";
        $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_0                      = "Nom d'utilisateur ou mot de passe incorrect";
        $l_reply_1                      = "Votre quota journalier a été atteint (durée ou volume)";
        $l_reply_2                      = "Votre quota mensuel a été atteint (durée ou volume)";
        $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 en accès libre : ";
        $l_sms_registration             = "S'inscrire par SMS";
        $l_email_registration           = "S'incrire par E-mail";
} 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 (https)";
        $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_0                      = "Incorrect username or password";
        $l_reply_1                      = "Your daily quota has been reached (duration or volume)";
        $l_reply_2                      = "Your monthly quota has been reached (duration or volume)";
        $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                   = "Open access websites : ";
        $l_sms_registration             = "Register by SMS";
        $l_email_registration           = "Register by E-mail";
}

# If HTTPS not use, tell it's wrong
if (($conf['HTTPS_LOGIN'] === 'on') && ((!isset($_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))
                                $username       = htmlspecialchars(trim($_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']);               else $res = '';
// if (isset($_GET['reason']))  $reason         = htmlspecialchars($_GET['reason']);            else $reason = '';
if (isset($_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['timeleft']))   $timeleft       = htmlspecialchars($_GET['timeleft']);          else $timeleft = '';
if (isset($_GET['reply']))      $reply          = htmlspecialchars(trim($_GET['reply']));       else $reply = '';
if (isset($_GET['redirurl']))   $redirurl       = htmlspecialchars($_GET['redirurl']);          else $redirurl = '';
if (isset($_GET['userurl']))    $userurl        = htmlspecialchars($_GET['userurl']);

// TODO: clean unused query params

$uamip = $conf['HOSTNAME'].'.'.$conf['DOMAIN'];
if (($conf['HTTPS_CHILLI'] === 'on') && $useHTTPS) {
        $uamproto = 'https';
        $uamport  = 3991;
} else {
        $uamproto = 'http';
        $uamport  = 3990;
}

# translation of radius replies
if (!empty($reply)) {
        switch ($reply) {
                case 'Username not found'                               : $reply = $l_reply_0; break;
                case 'Login failed'                                     : $reply = $l_reply_0; break;
                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 out your allowed time period'             : $reply = $l_reply_3; break;
                case 'Your expiration date has been reached'    : $reply = $l_reply_4; break;
                case 'You are already logged in - access denied'        : $reply = $l_reply_5; break;
                case 'Your 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)));

        header("Location: $uamproto://$uamip:$uamport/logon?username=$username&password=$pappassword&userurl=$userurl");
        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']);
                        $sql = "SELECT value FROM radreply WHERE username='$user_uid' AND attribute='Alcasar-Imputability-Warning'";
                        $res = @da_sql_query($link, $config, $sql); // on affiche pas les erreurs
                        if ($res) {
                                $row = @da_sql_fetch_array($res, $config);
                                if ($row['value'] === '1') {
                                        $sql = "DELETE FROM radreply WHERE username='$user_uid' AND attribute='Alcasar-Imputability-Warning'";
                                        @da_sql_query($link, $config, $sql);
                                        header('Location: '.(($conf['HTTPS_LOGIN'] === 'on') ? 'https' : 'http').'://'.$conf['HOSTNAME'].'.'.$conf['DOMAIN'].'/index.php?warn=1&url='.urlencode($_GET['userurl']));   //we present to user information about imputability logs 
                                        exit();
                                }
                        }
                }
        }
}

// By default, redirect to prelogin in order to generate a challenge
if ($result === 0) {
        header("Location: $uamproto://$uamip:$uamport/prelogin");
        exit();
}

//////////////////////////////////////////////
///////////// TEST VARIABLES /////////////////
//////////////////////////////////////////////////////////////////
//$result = 5;     // = 1/2/3/4/5 
// reply is a displayed sentence
//$reply = 'dsfsdfsdfdsf';    //  = ''/'Incorrect user/password'
//$service_SMS_status = true;    // = true/false
//$service_Email_status = true;    // = true/false
// test of domain Allowed
//////////////////////////////////////////////////////////////////

// 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><?= $l_loggingin ?></title>
        <link rel="stylesheet" href="/css/bootstrap.min.css" type="text/css">
        <link rel="stylesheet" href="/css/intercept.css" type="text/css">
        <link rel="icon" href="/images/favicon-48.ico" type="image/ico">
<? if ($service_wifi4eu_status): ?>
        <script type="text/javascript">
                var wifi4euTimerStart = Date.now();
                var wifi4euNetworkIdentifier = '<?= $service_wifi4eu_code ?>';
                var wifi4euLanguage = '<?= $Language ?>';
                //var selftestModus = true;
        </script>
        <script type="text/javascript" src="<?= $service_wifi4eu_server ?>"></script>
<? endif; ?>
        <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('<?= $statuspath ?>', '_blank');

                                if ((win === null) || (typeof win === 'undefined')) { // Pop-up blocked
                                        window.location = '<?= $statuspath ?>';
                                } else {
                                        window.location = url;
                                }
                        } else {
                                window.location = '<?= $statuspath ?>';
                        }
                }
                if ((result === 2) || (result === 3) || result === 5) { // failed or logoff or notyet
                        document.form1.username.focus();
                }
        }
        </script>
</head>
<body onLoad="javascript:doOnLoad(<?= $result ?>,'<?= $userurl ?>','<?= $redirurl ?>','<?= $adminurl ?>','<?= $timeleft ?>')">
        <div class="col-12">    
        <?php if ($result === 2 || $result === 3 || $result === 5): // failed or logoff or notyet ?>
                <div class ="row">
                        <div class="col-12 col-md-10 offset-sm-1">
                                <div class="row banner">
                                        <div class="col-8 offset-xs-2 col-md-12 offset-sm-0">
                                <?php if ($service_wifi4eu_status): ?>
                                        <img id="wifi4eubanner">
                                <?php else: ?>
                                        <h1 class="organisme"><?= $organisme ?></h1>
                                <?php endif; ?>
                                        </div>
                                </div>
                                <div class="row">
                                        <form name="form1" class="form-horizontal col-12 col-sm-12 col-md-10 offset-md-1 background-form" method="post" action="<?= $loginpath ?>">
                                                <div class="row">
                                                        <div class="col-12 col-sm-12 col-md-6 offset-md-3">
                                                                <h2 class="titre-controle-acces"><?= $l_loggedcont ?></h2>
                                                        </div>
                                                        <div class="d-none d-md-block col-md-3">
                                                        <?php
                                                        // Read the "Domain allowed" file
                                                        $tab = file(DOMAIN_ALLOWED_LIST);
                                                        if ($tab) { // the file isn't empty
                                                                echo '<div id="authorized_domain">'.$l_uam_domain.'</div>';
                                                                echo '<ul>';
                                                                foreach ($tab as $line) {
                                                                        if (!empty(trim($line))) { // the line isn't empty
                                                                                if (strpos ($line, '#')) { // the domain should be displayed
                                                                                        $domain_allowed = explode('#', $line);
                                                                                        $domain = explode('"', $domain_allowed[0]);
                                                                                        $domain[1] = ltrim($domain[1], '.'); // remove every '.' from the beginning of domain
                                                                                        echo '<li><a href="http://'.trim($domain[1]).'">'.trim($domain_allowed[1]).'</a></li>';
                                                                                }
                                                                        }
                                                                }
                                                                echo '</ul>';
                                                        }
                                                        ?>

                                                        </div>
                                                </div>
                                                <div>
                                                <?php if ($result === 2): // failed ?>
                                                        <h3 class="titre-erreur"><?= $l_loginfailed ?>
                                                        <?php if ($reply): // traitement du reply ... ?>
                                                                : <?= $reply ?>
                                                        <?php endif; ?>
                                                        </h3>
                                                <?php endif;
                                                if ($userurl === 'http://logout/') $userurl = 'http://www.google.com'; // Avoid cyclic logout
                                                ?>

                                                </div>

                                                <div class="row inputs">
                                                        <div class="d-none d-md-block col-md-2">
                                                                 <img id="logo-organ" class="img-fluid" src="/images/organisme.png">
                                                        </div>
                                                        <div class="col-12 col-md-8">
                                                                <input type="hidden" name="challenge" value="<?= $challenge ?>">
                                                                <input type="hidden" name="userurl" value="<?= $userurl ?>">
                                                                <div class="form-group row">
                                                                        <div class="col-2 col-md-2 control-label">
                                                                                <p class="boite-info-text"><?= $l_user ?></p>
                                                                        </div>
                                                                        <div class="col-8 col-md-8" id="input_username">
                                                                                <input type="text" class="form-control boite-info-text" name="username" autocomplete="off" placeholder="<?= $l_user ?>">
                                                                        </div>
                                                                </div>
                                                                <div class="form-group row">
                                                                        <div class="col-2 col-md-2 control-label">
                                                                                <p class="boite-info-text"><?= $l_password ?></p>
                                                                        </div>
                                                                        <div class="col-8 col-md-8" id="input_password">
                                                                                <input type="password" class="form-control boite-info-text" name="password" autocomplete="off" placeholder="<?= $l_password ?>">
                                                                        </div>
                                                                </div>
                                                        </div>
                                                        <div class="d-none d-md-block col-md-2">
                                                        
                                                        </div>
                                                </div>
                                                <div class="row row_button">
                                                        <div class="col-12 text-center">
                                                                <input value="<?= $l_boutonO ?>" class="btn btn-primary button" type="submit" name="button">
                                                        </div>  
                                                </div>
                                                <?php if ($service_SMS_status): ?>
                                                        <div class= "row sms_registration">
                                                                <a href="sms_registration.php"><?= $l_sms_registration ?></a>
                                                        </div>
                                                <?php endif; ?>
                                                <?php if ($service_Email_status): ?>
                                                        <div class= "row sms_registration">
                                                                <a href="email_registration_front.php"><?= $l_email_registration ?></a>
                                                        </div>
                                                <?php endif; ?>
                                        </form>
                                </div>
                        </div>
                </div>
                        <div class="row boite-info-spacing">
                                <div class="col-12 col-md-10 offset-sm-1 col-lg-8 offset-md-2 boite-info-spacing">
                                        <table id="boite-info" cellSpacing="0" cellPadding="0">
                                                <tr class="boite-info-titre">
                                                        <td align="center"><font color="red"><b><?= $l_loggedin_stringl1 ?></b></font></td>
                                                </tr>
                                                <tr class="boite-info-text">
                                                        <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>
                                </div>
                                <div class="d-none d-sm-none d-md-block col-md-2">
                                        <img id="logo-alcasar" class="img-fluid" src="/images/logo-alcasar.png">
                                </div>
                        </div>
                        <div class="row">
                                <div class="col-6 col-md-12 d-md-none d-sm-none d-lg-none">
                                                <img id="logo-alcasar" class="img-fluid img-xs-bottom" src="/images/logo-alcasar.png">
                                        </div>

                                <div class="col-6 d-sm-none d-md-none d-lg-none">
                                        <img id="logo-organ" class="img-fluid img-xs-bottom" src="/images/organisme.png">

                                </div>
                        </div>
                <div class="row" style="text-align: center">
                        <div class="col-8 offset-xs-2 col-md-6 offset-sm-3 d-md-none d-sm-none d-lg-none">
                        <?php
                        // Read the "Domain allowed" file
                        $tab = file(DOMAIN_ALLOWED_LIST);
                        if ($tab) { // the file isn't empty
                                echo '<div id="authorized_domain">'.$l_uam_domain.'</div>';
                                echo '<ul>';
                                foreach ($tab as $line) {
                                        if (!empty(trim($line))) { // the line isn't empty
                                                if (strpos ($line, '#')) { // the domain should be displayed
                                                        $domain_allowed = explode('#', $line);
                                                        $domain = explode('"', $domain_allowed[0]);
                                                        $domain[1] = ltrim($domain[1], '.'); // remove every '.' from the beginning of domain
                                                        echo '<li><a href="http://'.trim($domain[1]).'">'.trim($domain_allowed[1]).'</a></li>';
                                                }
                                        }
                                }
                                echo '</ul>';
                        }
                        ?>
                        </div>
                </div>
        </div>
        <?php endif; ?>
</body>
</html>