login.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/


// get pear
include("include/inc.get_pear.php");

// start correct client
// if no client_id is given, default client is loaded (in class.ilias.php)
if (isset($_GET["client_id"]))
{       
        setcookie("ilClientId",$_GET["client_id"]);
        $_COOKIE["ilClientId"] = $_GET["client_id"];
}

require_once "include/inc.check_pear.php";
require_once "include/inc.header.php";

// check correct setup
if (!$ilias->getSetting("setup_ok"))
{
        echo "setup is not completed. Please run setup routine again. (login.php)";
        exit();
}

// check for auth
if ($ilias->auth->getAuth())
{
        if(!$ilias->account->checkTimeLimit())
        {
                $ilias->auth->logout();
                session_destroy();
                ilUtil::redirect('login.php?time_limit=true');
        }

        if ($ilias->getSetting("chat_active"))
        {
                include_once "./chat/classes/class.ilChatServerCommunicator.php";
                ilChatServerCommunicator::_login();
        }
        
        // UPDATE LAST FORUM VISIT
        include_once './classes/class.ilObjForum.php';

        ilObjForum::_updateOldAccess($ilUser->getId());
        
        $return_to = "start.php";
        
        if (!empty($_GET["return_to"]))
        {
                $return_to = urldecode($_GET["return_to"]);
        }

        ilUtil::redirect($return_to);
}

//instantiate login template
$tpl->addBlockFile("CONTENT", "content", "tpl.login.html");

//language handling
if ($_GET["lang"] == "")
{
        $_GET["lang"] = $ilias->ini->readVariable("language","default");
}

//instantiate language
$lng = new ilLanguage($_GET["lang"]);

// catch reload
if ($_GET["reload"])
{
    if ($_GET["inactive"])
    {
        $tpl->setVariable("RELOAD","<script language=\"Javascript\">\ntop.location.href = \"./login.php?inactive=true\";\n</script>\n");
    }
    else
    {
        $tpl->setVariable("RELOAD","<script language=\"Javascript\">\ntop.location.href = \"./login.php?expired=true\";\n</script>\n");
    }
}

$languages = $lng->getInstalledLanguages();

foreach ($languages as $lang_key)
{
        $tpl->setCurrentBlock("languages");
        $tpl->setVariable("LANG_KEY", $lang_key);
        $tpl->setVariable("LANG_NAME", $lng->txt("lang_".$lang_key));
        $tpl->setVariable("BORDER", 0);
        $tpl->setVariable("VSPACE", 0);
        $tpl->parseCurrentBlock();
}

// allow new registrations? Surpress option if Authmode is not local database
if ($ilias->getSetting("enable_registration") and AUTH_CURRENT == AUTH_LOCAL)
{
        $tpl->setCurrentBlock("new_registration");
        $tpl->setVariable("REGISTER", $lng->txt("registration"));
        $tpl->setVariable("LANG_ID", $_GET["lang"]);
        $tpl->parseCurrentBlock();
}
// allow password assistance? Surpress option if Authmode is not local database
if ($ilias->getSetting("password_assistance") and AUTH_CURRENT == AUTH_LOCAL)
{
        $tpl->setCurrentBlock("password_assistance");
        $tpl->setVariable("FORGOT_PASSWORD", $lng->txt("forgot_password"));
        $tpl->setVariable("LANG_ID", $_GET["lang"]);
        $tpl->parseCurrentBlock();
}

$tpl->setVariable("ILIAS_RELEASE", $ilias->getSetting("ilias_version"));
$tpl->setVariable("TXT_ILIAS_LOGIN", $lng->txt("login_to_ilias"));
$tpl->setVariable("FORMACTION", "login.php?lang=".$_GET["lang"]);
$tpl->setVariable("TXT_USERNAME", $lng->txt("username"));
$tpl->setVariable("TXT_PASSWORD", $lng->txt("password"));
$tpl->setVariable("TXT_SUBMIT", $lng->txt("submit"));
$tpl->setVariable("TXT_CHOOSE_LANGUAGE", $lng->txt("choose_language"));
$tpl->setVariable("LANG_ID", $_GET["lang"]);

if ($_GET["inactive"])
{
    $tpl->setVariable(TXT_MSG_LOGIN_FAILED, $lng->txt("err_inactive"));
}
elseif ($_GET["expired"])
{
    $tpl->setVariable(TXT_MSG_LOGIN_FAILED, $lng->txt("err_session_expired"));
}

// TODO: Move this to header.inc since an expired session could not detected in login script 
$status = $ilias->auth->getStatus();

if (!empty($status))
{
        switch ($status)
        {
                case AUTH_EXPIRED:
                        $tpl->setVariable(TXT_MSG_LOGIN_FAILED, $lng->txt("err_session_expired"));
                        break;
                case AUTH_IDLED:
                        // lang variable err_idled not existing
                        //$tpl->setVariable(TXT_MSG_LOGIN_FAILED, $lng->txt("err_idled"));
                        break;
                case AUTH_WRONG_LOGIN:
                default:
                        $tpl->setVariable(TXT_MSG_LOGIN_FAILED, $lng->txt("err_wrong_login"));
                        break;
        }
}
if($_GET['time_limit'])
{
        $tpl->setVariable("TXT_MSG_LOGIN_FAILED",$lng->txt('time_limit_reached'));
}

$tpl->setVariable("PHP_SELF", $_SERVER['PHP_SELF']);
$tpl->setVariable("USERNAME", $_POST["username"]);
$tpl->setVariable("USER_AGREEMENT", $lng->txt("usr_agreement"));

$tpl->show(false);
?>