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");


// login language selection is post type
if ($_POST["lang"] != "")
{
        $_GET["lang"] = $_POST["lang"];
}

// check for session cookies enabled
if (!isset($_COOKIE['iltest']))
{
        if (empty($_GET['cookies']))
        {
                setcookie("iltest","cookie");
                header('Location: '.$_SERVER['PHP_SELF']."?cookies=nocookies&lang=".$_GET['lang']);
        }
        else
        {
                $_COOKIE['iltest'] = "";
        }
}
else
{
        unset($_GET['cookies']);
}

// 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');
        }

        include_once './Services/Tracking/classes/class.ilOnlineTracking.php';

        ilOnlineTracking::_addUser($ilUser->getId());

        if ($ilias->getSetting("chat_active"))
        {
                include_once "./chat/classes/class.ilChatServerCommunicator.php";
                include_once "./chat/classes/class.ilChatRoom.php";

                ilChatServerCommunicator::_login();
                ilChatRoom::_unkick($ilUser->getId());
        }

        // UPDATE LAST FORUM VISIT
        include_once './classes/class.ilObjForum.php';

        ilObjForum::_updateOldAccess($ilUser->getId());

        $return_to = "start.php";

        if ($_GET["rep_ref_id"] != "")
        {
                $return_to.= "?script=".rawurlencode("repository.php?cmd=frameset&ref_id=".$_GET["rep_ref_id"]);
        }

        if (!empty($_GET["return_to"]))
        {
                $return_to = urldecode($_GET["return_to"]);
        }

        ilUtil::redirect($return_to);
}

// Instantiate login template
// Use Shibboleth-only authentication if auth_mode is set to Shibboleth
if ($ilias->getSetting("auth_mode") == AUTH_SHIBBOLETH)
{
        $tpl->addBlockFile("CONTENT", "content", "tpl.login.shib_only.html");
}
// Use dual login template if Shibboleth is configured and enabled
elseif ($ilias->getSetting("shib_active"))
{
        $tpl->addBlockFile("CONTENT", "content", "tpl.login.dual.html");
}
else
{
        $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");
    }
}


$tpl->setVariable("TXT_OK", $lng->txt("ok"));

$languages = $lng->getInstalledLanguages();

foreach ($languages as $lang_key)
{
        $tpl->setCurrentBlock("languages");
        $tpl->setVariable("LANG_KEY", $lang_key);
        $tpl->setVariable("LANG_NAME",
                ilLanguage::_lookupEntry($lang_key, "meta", "meta_l_".$lang_key));
        $tpl->setVariable("BORDER", 0);
        $tpl->setVariable("VSPACE", 0);
        $tpl->parseCurrentBlock();
}

// allow new registrations? 
if ($ilias->getSetting("enable_registration"))
{
        $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_DEFAULT == AUTH_LOCAL)
{
        $tpl->setCurrentBlock("password_assistance");
        $tpl->setVariable("FORGOT_PASSWORD", $lng->txt("forgot_password"));
        $tpl->setVariable("FORGOT_USERNAME", $lng->txt("forgot_username"));
        $tpl->setVariable("LANG_ID", $_GET["lang"]);
        $tpl->parseCurrentBlock();
}

if ($ilias->getSetting("pub_section"))
{
        $tpl->setCurrentBlock("homelink");
        $tpl->setVariable("CLIENT_ID","?client_id=".$_COOKIE["ilClientId"]."&lang=".$_GET["lang"]);
        $tpl->setVariable("TXT_HOME",$lng->txt("home"));
        $tpl->parseCurrentBlock();
}

if ($ilias->ini_ilias->readVariable("clients","list"))
{
        $tpl->setCurrentBlock("client_list");
        $tpl->setVariable("TXT_CLIENT_LIST",$lng->txt("to_client_list"));
        $tpl->parseCurrentBlock();      
}

$tpl->setVariable("ILIAS_RELEASE", $ilias->getSetting("ilias_version"));
$tpl->setVariable("TXT_SHIB_LOGIN", $lng->txt("login_to_ilias_via_shibboleth"));
$tpl->setVariable("TXT_SHIB_LOGIN_BUTTON", $ilias->getSetting("shib_login_button"));
$tpl->setVariable("TXT_SHIB_LOGIN_INSTRUCTIONS", $ilias->getSetting("shib_login_instructions"));
$tpl->setVariable("TXT_ILIAS_LOGIN", $lng->txt("login_to_ilias"));
$tpl->setVariable("FORMACTION", "login.php?rep_ref_id=".$_GET["rep_ref_id"]);
$tpl->setVariable("TXT_USERNAME", $lng->txt("username"));
$tpl->setVariable("TXT_PASSWORD", $lng->txt("password"));
$tpl->setVariable("TXT_SUBMIT", $lng->txt("submit"));
$tpl->setVariable("LANG_FORM_ACTION", "login.php?rep_ref_id=".$_GET["rep_ref_id"]);
$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();
$auth_error = $ilias->getAuthError();

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:
                        $add = "";
                        if (is_object($auth_error))
                        {
                                $add = "<br>".$auth_error->getMessage();
                        }
                        $tpl->setVariable(TXT_MSG_LOGIN_FAILED, $lng->txt("err_wrong_login").$add);                     
                        break;
        }
}


if($_GET['time_limit'])
{
        $tpl->setVariable("TXT_MSG_LOGIN_FAILED",$lng->txt('time_limit_reached'));
}

// output wrong IP message
if($_GET['wrong_ip'])
{
        $tpl->setVariable("TXT_MSG_LOGIN_FAILED", $lng->txt('wrong_ip_detected')." (".$_SERVER["REMOTE_ADDR"].")");
}

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

// browser does not accept cookies
if ($_GET['cookies'] == 'nocookies')
{
        $tpl->setVariable(TXT_MSG_LOGIN_FAILED, $lng->txt("err_no_cookies"));
        $tpl->setVariable("COOKIES_HOWTO", $lng->txt("cookies_howto"));
}

$tpl->show(false);
?>