index.php

Go to the documentation of this file.

<?php
/***************************************************************
*  Copyright notice
*
*  (c) 1999-2011 Kasper Skårhøj (kasperYYYY@typo3.com)
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project 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.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*  A copy is found in the textfile GPL.txt and important notices to the license
*  from the author is found in LICENSE.txt distributed with these scripts.
*
*
*  This script 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.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
 * Login-screen of TYPO3.
 *
 * $Id: index.php 10568 2011-02-22 22:52:34Z steffenk $
 * Revised for TYPO3 3.6 December/2003 by Kasper Skårhøj
 * XHTML compliant
 *
 * @author  Kasper Skårhøj <kasperYYYY@typo3.com>
 */
/**
 * [CLASS/FUNCTION INDEX of SCRIPT]
 *
 *
 *
 *   87: class SC_index
 *  120:     function init()
 *  159:     function main()
 *  268:     function printContent()
 *
 *              SECTION: Various functions
 *  292:     function makeLoginForm()
 *  337:     function makeLogoutForm()
 *  379:     function wrapLoginForm($content)
 *  438:     function checkRedirect()
 *  495:     function makeInterfaceSelectorBox()
 *  549:     function makeCopyrightNotice()
 *  582:     function makeLoginBoxImage()
 *  622:     function makeLoginNews()
 *
 * TOTAL FUNCTIONS: 11
 * (This index is automatically created/updated by the extension "extdeveval")
 *
 */


define('TYPO3_PROCEED_IF_NO_USER', 1);
require('init.php');
require('template.php');















/**
 * Script Class for rendering the login form
 *
 * @author  Kasper Skårhøj <kasperYYYY@typo3.com>
 * @package TYPO3
 * @subpackage core
 */
class SC_index {

        // Internal, GPvars:
    var $redirect_url;          // GPvar: redirect_url; The URL to redirect to after login.
    var $GPinterface;           // GPvar: Defines which interface to load (from interface selector)
    var $u;                 // GPvar: preset username
    var $p;                 // GPvar: preset password
    var $L;                 // GPvar: If "L" is "OUT", then any logged in used is logged out. If redirect_url is given, we redirect to it
    var $loginRefresh;          // Login-refresh boolean; The backend will call this script with this value set when the login is close to being expired and the form needs to be redrawn.
    var $commandLI;             // Value of forms submit button for login.

        // Internal, static:
    var $redirectToURL;         // Set to the redirect URL of the form (may be redirect_url or "backend.php")

        // Internal, dynamic:
    var $content;               // Content accumulation

    var $interfaceSelector;         // A selector box for selecting value for "interface" may be rendered into this variable
    var $interfaceSelector_jump;    // A selector box for selecting value for "interface" may be rendered into this variable - this will have an onchange action which will redirect the user to the selected interface right away
    var $interfaceSelector_hidden;  // A hidden field, if the interface is not set.
    var $addFields_hidden = '';     // Additional hidden fields to be placed at the login form

        // sets the level of security. *'normal' = clear-text. 'challenged' = hashed password/username from form in $formfield_uident. 'superchallenged' = hashed password hashed again with username.
    var $loginSecurityLevel = 'superchallenged';




    /**
     * Initialize the login box. Will also react on a &L=OUT flag and exit.
     *
     * @return  void
     */
    function init() {
            // We need a PHP session session for most login levels
        session_start();

        $this->redirect_url = t3lib_div::sanitizeLocalUrl(t3lib_div::_GP('redirect_url'));
        $this->GPinterface = t3lib_div::_GP('interface');

            // Grabbing preset username and password, for security reasons this feature only works if SSL is used
        if (t3lib_div::getIndpEnv('TYPO3_SSL')) {
            $this->u = t3lib_div::_GP('u');
            $this->p = t3lib_div::_GP('p');
        }

            // If "L" is "OUT", then any logged in is logged out. If redirect_url is given, we redirect to it
        $this->L = t3lib_div::_GP('L');

            // Login
        $this->loginRefresh = t3lib_div::_GP('loginRefresh');

            // Value of "Login" button. If set, the login button was pressed.
        $this->commandLI = t3lib_div::_GP('commandLI');

            // sets the level of security from conf vars
        if ($GLOBALS['TYPO3_CONF_VARS']['BE']['loginSecurityLevel']) {
            $this->loginSecurityLevel = $GLOBALS['TYPO3_CONF_VARS']['BE']['loginSecurityLevel'];
        }

            // try to get the preferred browser language
        $preferredBrowserLanguage = $GLOBALS['LANG']->csConvObj->getPreferredClientLanguage(t3lib_div::getIndpEnv('HTTP_ACCEPT_LANGUAGE'));
            // if we found a $preferredBrowserLanguage and it is not the default language and no be_user is logged in
            // initialize $GLOBALS['LANG'] again with $preferredBrowserLanguage
        if ($preferredBrowserLanguage != 'default' && !$GLOBALS['BE_USER']->user['uid']) {
            $GLOBALS['LANG']->init($preferredBrowserLanguage);
        }
        $GLOBALS['LANG']->includeLLFile('EXT:lang/locallang_login.xml');

            // check if labels from $GLOBALS['TYPO3_CONF_VARS']['BE']['loginLabels'] were changed,
            // and merge them to $GLOBALS['LOCAL_LANG'] if needed
        $this->mergeOldLoginLabels();

            // Setting the redirect URL to "backend.php" if no alternative input is given
        $this->redirectToURL = ($this->redirect_url ? $this->redirect_url : 'backend.php');


            // Do a logout if the command is set
        if ($this->L == 'OUT' && is_object($GLOBALS['BE_USER'])) {
            $GLOBALS['BE_USER']->logoff();
            if ($this->redirect_url) {
                t3lib_utility_Http::redirect($this->redirect_url);
            }
            exit;
        }
    }


    /**
     * Main function - creating the login/logout form
     *
     * @return  void
     */
    function main() {
        global $TBE_TEMPLATE, $TYPO3_CONF_VARS, $BE_USER;

            // Initialize template object:
        $TBE_TEMPLATE->bodyTagAdditions = ' onload="startUp();"';
        $TBE_TEMPLATE->moduleTemplate = $TBE_TEMPLATE->getHtmlTemplate('templates/login.html');

        $TBE_TEMPLATE->getPageRenderer()->loadExtJS();
        $TBE_TEMPLATE->getPageRenderer()->loadPrototype();
        $TBE_TEMPLATE->getPageRenderer()->loadScriptaculous();

            // Set JavaScript for creating a MD5 hash of the password:
        $TBE_TEMPLATE->JScode.= $this->getJScode();

            // Checking, if we should make a redirect.
            // Might set JavaScript in the header to close window.
        $this->checkRedirect();

            // Initialize interface selectors:
        $this->makeInterfaceSelectorBox();

            // Creating form based on whether there is a login or not:
        if (!$BE_USER->user['uid']) {
            $TBE_TEMPLATE->form = $this->startForm();
            $loginForm = $this->makeLoginForm();
        } else {
            $TBE_TEMPLATE->form = '
                <form action="index.php" method="post" name="loginform">
                <input type="hidden" name="login_status" value="logout" />
                ';
            $loginForm = $this->makeLogoutForm();
        }

            // Starting page:
        $this->content .= $TBE_TEMPLATE->startPage('TYPO3 Login: ' . htmlspecialchars($TYPO3_CONF_VARS['SYS']['sitename']), FALSE);

            // Add login form:
        $this->content.=$this->wrapLoginForm($loginForm);

        $this->content.= $TBE_TEMPLATE->endPage();
    }

    /**
     * Outputting the accumulated content to screen
     *
     * @return  void
     */
    function printContent() {
        echo $this->content;
    }

    /*****************************
     *
     * Various functions
     *
     ******************************/

    /**
     * Creates the login form
     * This is drawn when NO login exists.
     *
     * @return  string      HTML output
     */
    function makeLoginForm()    {
        $content = t3lib_parsehtml::getSubpart($GLOBALS['TBE_TEMPLATE']->moduleTemplate, '###LOGIN_FORM###');
        $markers = array(
            'VALUE_USERNAME' => htmlspecialchars($this->u),
            'VALUE_PASSWORD' => htmlspecialchars($this->p),
            'VALUE_SUBMIT'   => $GLOBALS['LANG']->getLL('labels.submitLogin', true),
        );

            // show an error message if the login command was successful already, otherwise remove the subpart
        if (!$this->commandLI) {
            $content = t3lib_parsehtml::substituteSubpart($content, '###LOGIN_ERROR###', '');
        } else {
            $markers['ERROR_MESSAGE'] = $GLOBALS['LANG']->getLL('error.login', true);
            $markers['ERROR_LOGIN_TITLE'] = $GLOBALS['LANG']->getLL('error.login.title', true);
            $markers['ERROR_LOGIN_DESCRIPTION'] = $GLOBALS['LANG']->getLL('error.login.description', true);
        }


            // remove the interface selector markers if it's not available
        if (!($this->interfaceSelector && !$this->loginRefresh)) {
            $content = t3lib_parsehtml::substituteSubpart($content, '###INTERFACE_SELECTOR###', '');
        } else {
            $markers['LABEL_INTERFACE'] = $GLOBALS['LANG']->getLL('labels.interface', true);
            $markers['VALUE_INTERFACE'] = $this->interfaceSelector;
        }

        return t3lib_parsehtml::substituteMarkerArray($content, $markers, '###|###');
    }


    /**
     * Creates the logout form
     * This is drawn if a user login already exists.
     *
     * @return  string      HTML output
     */
    function makeLogoutForm() {
        $content = t3lib_parsehtml::getSubpart($GLOBALS['TBE_TEMPLATE']->moduleTemplate, '###LOGOUT_FORM###');
        $markers = array(
            'LABEL_USERNAME' => $GLOBALS['LANG']->getLL('labels.username', true),
            'VALUE_USERNAME' => htmlspecialchars($GLOBALS['BE_USER']->user['username']),
            'VALUE_SUBMIT'   => $GLOBALS['LANG']->getLL('labels.submitLogout', true),
        );

            // remove the interface selector markers if it's not available
        if (!$this->interfaceSelector_jump) {
            $content = t3lib_parsehtml::substituteSubpart($content, '###INTERFACE_SELECTOR###', '');
        } else {
            $markers['LABEL_INTERFACE'] = $GLOBALS['LANG']->getLL('labels.interface', true);
            $markers['VALUE_INTERFACE'] = $this->interfaceSelector_jump;
        }

        return t3lib_parsehtml::substituteMarkerArray($content, $markers, '###|###');
    }


    /**
     * Wrapping the login form table in another set of tables etc:
     *
     * @param   string      HTML content for the login form
     * @return  string      The HTML for the page.
     */
    function wrapLoginForm($content) {
        $mainContent = t3lib_parsehtml::getSubpart($GLOBALS['TBE_TEMPLATE']->moduleTemplate, '###PAGE###');

        if ($GLOBALS['TBE_STYLES']['logo_login']) {
            $logo = '<img src="'.htmlspecialchars($GLOBALS['BACK_PATH'] . $GLOBALS['TBE_STYLES']['logo_login']) . '" alt="" />';
        } else {
            $logo = '<img'.t3lib_iconWorks::skinImg($GLOBALS['BACK_PATH'],'gfx/typo3logo.gif','width="123" height="34"').' alt="" />';
        }

        $markers = array(
            'LOGO'             => $logo,
            'LOGINBOX_IMAGE'   => $this->makeLoginBoxImage(),
            'FORM'             => $content,
            'NEWS'             => $this->makeLoginNews(),
            'COPYRIGHT'        => $this->makeCopyrightNotice(),
            'CSS_ERRORCLASS'   => ($this->commandLI ? ' class="error"' : ''),
            'CSS_OPENIDCLASS'  => 't3-login-openid-' . (t3lib_extMgm::isLoaded('openid') ? 'enabled' : 'disabled'),

                // the labels will be replaced later on, thus the other parts above
                // can use these markers as well and it will be replaced
            'HEADLINE'         => $GLOBALS['LANG']->getLL('headline', true),
            'INFO_ABOUT'       => $GLOBALS['LANG']->getLL('info.about', true),
            'INFO_RELOAD'      => $GLOBALS['LANG']->getLL('info.reset', true),
            'INFO'             => $GLOBALS['LANG']->getLL('info.cookies_and_js', true),
            'ERROR_JAVASCRIPT' => $GLOBALS['LANG']->getLL('error.javascript', true),
            'ERROR_COOKIES'    => $GLOBALS['LANG']->getLL('error.cookies', true),
            'ERROR_COOKIES_IGNORE' => $GLOBALS['LANG']->getLL('error.cookies_ignore', true),
            'ERROR_CAPSLOCK'   => $GLOBALS['LANG']->getLL('error.capslock', true),
            'ERROR_FURTHERHELP' => $GLOBALS['LANG']->getLL('error.furtherInformation', true),
            'LABEL_DONATELINK' => $GLOBALS['LANG']->getLL('labels.donate', true),
            'LABEL_USERNAME'   => $GLOBALS['LANG']->getLL('labels.username', true),
            'LABEL_OPENID'     => $GLOBALS['LANG']->getLL('labels.openId', true),
            'LABEL_PASSWORD'   => $GLOBALS['LANG']->getLL('labels.password', true),
            'LABEL_WHATISOPENID' => $GLOBALS['LANG']->getLL('labels.whatIsOpenId', true),
            'LABEL_SWITCHOPENID' => $GLOBALS['LANG']->getLL('labels.switchToOpenId', true),
            'LABEL_SWITCHDEFAULT' => $GLOBALS['LANG']->getLL('labels.switchToDefault', true),
            'CLEAR'            => $GLOBALS['LANG']->getLL('clear', true),
            'LOGIN_PROCESS'    => $GLOBALS['LANG']->getLL('login_process', true),
            'SITELINK'         => '<a href="/">###SITENAME###</a>',

                // global variables will now be replaced (at last)
            'SITENAME'         => htmlspecialchars($GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'])
        );
        return t3lib_parsehtml::substituteMarkerArray($mainContent, $markers, '###|###');
    }


    /**
     * Checking, if we should perform some sort of redirection OR closing of windows.
     *
     * @return  void
     */
    function checkRedirect()    {
        global $BE_USER,$TBE_TEMPLATE;

            // Do redirect:
            // If a user is logged in AND a) if either the login is just done (commandLI) or b) a loginRefresh is done or c) the interface-selector is NOT enabled (If it is on the other hand, it should not just load an interface, because people has to choose then...)
        if ($BE_USER->user['uid'] && ($this->commandLI || $this->loginRefresh || !$this->interfaceSelector))    {

                // If no cookie has been set previously we tell people that this is a problem. This assumes that a cookie-setting script (like this one) has been hit at least once prior to this instance.
            if (!$_COOKIE[$BE_USER->name]) {
                if ($this->commandLI=='setCookie') {
                        // we tried it a second time but still no cookie
                        // 26/4 2005: This does not work anymore, because the saving of challenge values in $_SESSION means the system will act as if the password was wrong.
                    throw new RuntimeException('Login-error: Yeah, that\'s a classic. No cookies, no TYPO3.<br /><br />Please accept cookies from TYPO3 - otherwise you\'ll not be able to use the system.');
                } else {
                        // try it once again - that might be needed for auto login
                    $this->redirectToURL = 'index.php?commandLI=setCookie';
                }
            }

            if (($redirectToURL = (string)$BE_USER->getTSConfigVal('auth.BE.redirectToURL'))) {
                $this->redirectToURL = $redirectToURL;
                $this->GPinterface = '';
            }

                // store interface
            $BE_USER->uc['interfaceSetup'] = $this->GPinterface;
            $BE_USER->writeUC();

                // Based on specific setting of interface we set the redirect script:
            switch ($this->GPinterface) {
                case 'backend':
                case 'backend_old':
                    $this->redirectToURL = 'backend.php';
                break;
                case 'frontend':
                    $this->redirectToURL = '../';
                break;
            }

                // If there is a redirect URL AND if loginRefresh is not set...
            if (!$this->loginRefresh)   {
                t3lib_utility_Http::redirect($this->redirectToURL);
            } else {
                $formprotection = t3lib_formprotection_Factory::get();
                $accessToken = $formprotection->generateToken('refreshTokens');
                $formprotection->persistTokens();
                $TBE_TEMPLATE->JScode.=$TBE_TEMPLATE->wrapScriptTags('
                    if (parent.opener && (parent.opener.busy || parent.opener.TYPO3.loginRefresh)) {
                        if (parent.opener.TYPO3.loginRefresh) {
                            parent.opener.TYPO3.loginRefresh.startTimer();
                        } else {
                            parent.opener.busy.loginRefreshed();
                        }
                        parent.opener.TYPO3.loginRefresh.refreshTokens("' . $accessToken . '");
                        parent.close();
                    }
                ');
            }
        } elseif (!$BE_USER->user['uid'] && $this->commandLI) {
            sleep(5);   // Wrong password, wait for 5 seconds
        }
    }

    /**
     * Making interface selector:
     *
     * @return  void
     */
    function makeInterfaceSelectorBox() {
        global $TYPO3_CONF_VARS;

            // Reset variables:
        $this->interfaceSelector = '';
        $this->interfaceSelector_hidden='';
        $this->interfaceSelector_jump = '';

            // If interfaces are defined AND no input redirect URL in GET vars:
        if ($TYPO3_CONF_VARS['BE']['interfaces'] && ($this->commandLI || !$this->redirect_url)) {
            $parts = t3lib_div::trimExplode(',',$TYPO3_CONF_VARS['BE']['interfaces']);
            if (count($parts)>1)    {   // Only if more than one interface is defined will we show the selector:

                    // Initialize:
                $labels=array();

                $labels['backend']     = $GLOBALS['LANG']->getLL('interface.backend');
                $labels['backend_old'] = $GLOBALS['LANG']->getLL('interface.backend_old');
                $labels['frontend']    = $GLOBALS['LANG']->getLL('interface.frontend');

                $jumpScript=array();
                $jumpScript['backend']     = 'backend.php';
                $jumpScript['backend_old'] = 'backend.php';
                $jumpScript['frontend']    = '../';

                    // Traverse the interface keys:
                foreach($parts as $valueStr)    {
                    $this->interfaceSelector.='
                            <option value="'.htmlspecialchars($valueStr).'"'.(t3lib_div::_GP('interface')==htmlspecialchars($valueStr) ? ' selected="selected"' : '').'>'.htmlspecialchars($labels[$valueStr]).'</option>';
                    $this->interfaceSelector_jump.='
                            <option value="'.htmlspecialchars($jumpScript[$valueStr]).'">'.htmlspecialchars($labels[$valueStr]).'</option>';
                }
                $this->interfaceSelector='
                        <select id="t3-interfaceselector" name="interface" class="c-interfaceselector" tabindex="3">'.$this->interfaceSelector.'
                        </select>';
                $this->interfaceSelector_jump='
                        <select id="t3-interfaceselector" name="interface" class="c-interfaceselector" tabindex="3" onchange="window.location.href=this.options[this.selectedIndex].value;">'.$this->interfaceSelector_jump.'
                        </select>';

            } elseif (!$this->redirect_url) {
                    // If there is only ONE interface value set and no redirect_url is present:
                $this->interfaceSelector_hidden='<input type="hidden" name="interface" value="'.trim($TYPO3_CONF_VARS['BE']['interfaces']).'" />';
            }
        }
    }

    /**
     * COPYRIGHT notice
     *
     * Warning:
     * DO NOT prevent this notice from being shown in ANY WAY.
     * According to the GPL license an interactive application must show such a notice on start-up ('If the program is interactive, make it output a short notice... ' - see GPL.txt)
     * Therefore preventing this notice from being properly shown is a violation of the license, regardless of whether you remove it or use a stylesheet to obstruct the display.
     *
     * @return  string      Text/Image (HTML) for copyright notice.
     */
    function makeCopyrightNotice()  {

            // Get values from TYPO3_CONF_VARS:
        $loginCopyrightWarrantyProvider = strip_tags(trim($GLOBALS['TYPO3_CONF_VARS']['SYS']['loginCopyrightWarrantyProvider']));
        $loginCopyrightWarrantyURL = strip_tags(trim($GLOBALS['TYPO3_CONF_VARS']['SYS']['loginCopyrightWarrantyURL']));
        $loginImageSmall = (trim($GLOBALS['TBE_STYLES']['loginBoxImageSmall'])) ? trim($GLOBALS['TBE_STYLES']['loginBoxImageSmall']) : 'gfx/loginlogo_transp.gif';

            // Make warranty note:
        if (strlen($loginCopyrightWarrantyProvider)>=2 && strlen($loginCopyrightWarrantyURL)>=10)   {
            $warrantyNote = sprintf($GLOBALS['LANG']->getLL('warranty.by'), htmlspecialchars($loginCopyrightWarrantyProvider), '<a href="' . htmlspecialchars($loginCopyrightWarrantyURL) . '" target="_blank">', '</a>');
        } else {
            $warrantyNote = sprintf($GLOBALS['LANG']->getLL('no.warranty'), '<a href="' . TYPO3_URL_LICENSE . '" target="_blank">', '</a>');
        }

            // Compile full copyright notice:
        $copyrightNotice = '<a href="' . TYPO3_URL_GENERAL . '" target="_blank">'.
                    '<img src="' . $loginImageSmall . '" alt="' . $GLOBALS['LANG']->getLL('typo3.logo') . '" align="left" />' .
                    $GLOBALS['LANG']->getLL('typo3.cms') . ($GLOBALS['TYPO3_CONF_VARS']['SYS']['loginCopyrightShowVersion']?' ' . $GLOBALS['LANG']->getLL('version.short') . ' ' . htmlspecialchars($GLOBALS['TYPO_VERSION']):'') .
                    '</a>. ' .
                    $GLOBALS['LANG']->getLL('copyright') . ' &copy; ' . TYPO3_copyright_year . ' Kasper Sk&#229;rh&#248;j. ' . $GLOBALS['LANG']->getLL('extension.copyright') . ' ' .
                    sprintf($GLOBALS['LANG']->getLL('details.link'), '<a href="' . TYPO3_URL_GENERAL . '" target="_blank">' . TYPO3_URL_GENERAL . '</a>') . '<br /> ' .
                    $warrantyNote . ' ' .
                    sprintf($GLOBALS['LANG']->getLL('free.software'), '<a href="' . TYPO3_URL_LICENSE . '" target="_blank">', '</a> ') .
                    $GLOBALS['LANG']->getLL('keep.notice');

            // Return notice:
        return $copyrightNotice;
    }

    /**
     * Returns the login box image, whether the default or an image from the rotation folder.
     *
     * @return  string      HTML image tag.
     */
    function makeLoginBoxImage()    {
        $loginboxImage = '';
        if ($GLOBALS['TBE_STYLES']['loginBoxImage_rotationFolder']) {       // Look for rotation image folder:
            $absPath = t3lib_div::resolveBackPath(PATH_typo3.$GLOBALS['TBE_STYLES']['loginBoxImage_rotationFolder']);

                // Get rotation folder:
            $dir = t3lib_div::getFileAbsFileName($absPath);
            if ($dir && @is_dir($dir))  {

                    // Get files for rotation into array:
                $files = t3lib_div::getFilesInDir($dir,'png,jpg,gif');

                    // Pick random file:
                $randImg = array_rand($files, 1);

                    // Get size of random file:
                $imgSize = @getimagesize($dir.$files[$randImg]);

                $imgAuthor = is_array($GLOBALS['TBE_STYLES']['loginBoxImage_author'])&&$GLOBALS['TBE_STYLES']['loginBoxImage_author'][$files[$randImg]] ? htmlspecialchars($GLOBALS['TBE_STYLES']['loginBoxImage_author'][$files[$randImg]]) : '';

                    // Create image tag:
                if (is_array($imgSize)) {
                    $loginboxImage = '<img src="'.htmlspecialchars($GLOBALS['TBE_STYLES']['loginBoxImage_rotationFolder'].$files[$randImg]).'" '.$imgSize[3].' id="loginbox-image" alt="'.$imgAuthor.'" title="'.$imgAuthor.'" />';
                }
            }
        } else {    // If no rotation folder configured, print default image:

            if (strstr(TYPO3_version,'-dev'))   {   // development version
                $loginImage = 'loginbox_image_dev.png';
                $imagecopy = 'You are running a development version of TYPO3 '.TYPO3_branch;
            } else {
                $loginImage = 'loginbox_image.jpg';
                $imagecopy = 'Photo by J.C. Franca (www.digitalphoto.com.br)';
            }
            $loginboxImage = '<img'.t3lib_iconWorks::skinImg($GLOBALS['BACK_PATH'],'gfx/'.$loginImage,'width="200" height="133"').' id="loginbox-image" alt="'.$imagecopy.'" title="'.$imagecopy.'" />';
        }

            // Return image tag:
        return $loginboxImage;
    }

    /**
     * Make login news - renders the HTML content for a list of news shown under
     * the login form. News data is added through $TYPO3_CONF_VARS
     *
     * @return  string      HTML content
     * @credits         Idea by Jan-Hendrik Heuing
     * @deprecated $GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews'] is deprecated since 4.5. Use system news records instead.
     */
    function makeLoginNews() {
        $newsContent = '';

        $systemNews = $this->getSystemNews();
        if (count($GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews'])) {
            t3lib_div::logDeprecatedFunction();

            $GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews'] = array_merge(
                $systemNews,
                $GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews']
            );
        } else {
            $GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews'] = $systemNews;
        }

            // Traverse news array IF there are records in it:
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews']) && count($GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews']) && !t3lib_div::_GP('loginRefresh')) {
            $htmlParser = t3lib_div::makeInstance('t3lib_parsehtml_proc');
                // get the main news template, and replace the subpart after looped through
            $newsContent      = t3lib_parsehtml::getSubpart($GLOBALS['TBE_TEMPLATE']->moduleTemplate, '###LOGIN_NEWS###');
            $newsItemTemplate = t3lib_parsehtml::getSubpart($newsContent, '###NEWS_ITEM###');

            $newsItem = '';
            $count = 1;
            foreach ($GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews'] as $newsItemData) {
                $additionalClass = '';
                if ($count == 1) {
                    $additionalClass = ' first-item';
                } elseif($count == count($GLOBALS['TYPO3_CONF_VARS']['BE']['loginNews'])) {
                    $additionalClass = ' last-item';
                }

                $newsItemContent = $htmlParser->TS_transform_rte($htmlParser->TS_links_rte($newsItemData['content']));
                $newsItemMarker = array(
                    '###HEADER###'  => htmlspecialchars($newsItemData['header']),
                    '###DATE###'    => htmlspecialchars($newsItemData['date']),
                    '###CONTENT###' => $newsItemContent,
                    '###CLASS###'   => $additionalClass
                );

                $count++;
                $newsItem .= t3lib_parsehtml::substituteMarkerArray($newsItemTemplate, $newsItemMarker);
            }

            $title = ($GLOBALS['TYPO3_CONF_VARS']['BE']['loginNewsTitle'] ? $GLOBALS['TYPO3_CONF_VARS']['BE']['loginNewsTitle'] : $GLOBALS['LANG']->getLL('newsheadline'));

            $newsContent = t3lib_parsehtml::substituteMarker($newsContent,  '###NEWS_HEADLINE###', htmlspecialchars($title));
            $newsContent = t3lib_parsehtml::substituteSubpart($newsContent, '###NEWS_ITEM###', $newsItem);
        }

        return $newsContent;
    }

    /**
     * Gets news from sys_news and converts them into a format suitable for
     * showing them at the login screen.
     *
     * @return  array   An array of login news.
     */
    protected function getSystemNews() {
        $systemNewsTable = 'sys_news';
        $systemNews      = array();

        $systemNewsRecords = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows(
            'title, content, crdate',
            $systemNewsTable,
            '1=1' .
                t3lib_BEfunc::BEenableFields($systemNewsTable) .
                t3lib_BEfunc::deleteClause($systemNewsTable),
            '',
            'crdate DESC'
        );

        foreach ($systemNewsRecords as $systemNewsRecord) {
            $systemNews[] = array(
                'date'    => date(
                    $GLOBALS['TYPO3_CONF_VARS']['SYS']['ddmmyy'],
                    $systemNewsRecord['crdate']
                ),
                'header'  => $systemNewsRecord['title'],
                'content' => $systemNewsRecord['content']
            );
        }

        return $systemNews;
    }

    /**
     * Returns the form tag
     *
     * @return  string      Opening form tag string
     */
    function startForm()    {
        $output = '';

        // The form defaults to 'no login'. This prevents plain
        // text logins to the Backend. The 'sv' extension changes the form to
        // use superchallenged method and rsaauth extension makes rsa authetication.
        $form = '<form action="index.php" method="post" name="loginform" ' .
                'onsubmit="alert(\'No authentication methods available. Please, ' .
                'contact your TYPO3 administrator.\');return false">';

        // Call hooks. If they do not return anything, we fail to login
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['typo3/index.php']['loginFormHook'])) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['typo3/index.php']['loginFormHook'] as $function) {
                $params = array();
                $formCode = t3lib_div::callUserFunction($function, $params, $this);
                if ($formCode) {
                    $form = $formCode;
                    break;
                }
            }
        }

        $output .= $form .
            '<input type="hidden" name="login_status" value="login" />' .
            '<input type="hidden" name="userident" value="" />' .
            '<input type="hidden" name="redirect_url" value="'.htmlspecialchars($this->redirectToURL).'" />' .
            '<input type="hidden" name="loginRefresh" value="'.htmlspecialchars($this->loginRefresh).'" />' .
            $this->interfaceSelector_hidden . $this->addFields_hidden;

        return $output;
    }

    /**
     * Creates JavaScript for the login form
     *
     * @return  string      JavaScript code
     */
    function getJScode()    {
        $JSCode = '';
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['typo3/index.php']['loginScriptHook'])) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['typo3/index.php']['loginScriptHook'] as $function) {
                $params = array();
                $JSCode = t3lib_div::callUserFunction($function, $params, $this);
                if ($JSCode) {
                    break;
                }
            }
        }
        $JSCode .= $GLOBALS['TBE_TEMPLATE']->wrapScriptTags('
            function startUp() {
                    // If the login screen is shown in the login_frameset window for re-login, then try to get the username of the current/former login from opening windows main frame:
                try {
                    if (parent.opener && parent.opener.TS && parent.opener.TS.username && document.loginform && document.loginform.username)    {
                        document.loginform.username.value = parent.opener.TS.username;
                    }
                }
                catch(error) {
                    //continue
                }

                    // Wait a few millisecons before calling checkFocus(). This might be necessary because some browsers need some time to auto-fill in the form fields
                window.setTimeout("checkFocus()", 50);
            }

                // This moves focus to the right input field:
            function checkFocus() {
                    // If for some reason there already is a username in the username form field, move focus to the password field:
                if (document.loginform.username && document.loginform.username.value == "") {
                    document.loginform.username.focus();
                } else if (document.loginform.p_field && document.loginform.p_field.type!="hidden") {
                    document.loginform.p_field.focus();
                }
            }

                // This function shows a warning, if user has capslock enabled
                // parameter showWarning: shows warning if true and capslock active, otherwise only hides warning, if capslock gets inactive
            function checkCapslock(e, showWarning) {
                if (!isCapslock(e)) {
                    document.getElementById(\'t3-capslock\').style.display = \'none\';
                } else if (showWarning) {
                    document.getElementById(\'t3-capslock\').style.display = \'block\';
                }
            }

                // Checks weather capslock is enabled (returns true if enabled, false otherwise)
                // thanks to http://24ways.org/2007/capturing-caps-lock

            function isCapslock(e) {
                var ev = e ? e : window.event;
                if (!ev) {
                    return;
                }
                var targ = ev.target ? ev.target : ev.srcElement;
                // get key pressed
                var which = -1;
                if (ev.which) {
                    which = ev.which;
                } else if (ev.keyCode) {
                    which = ev.keyCode;
                }
                // get shift status
                var shift_status = false;
                if (ev.shiftKey) {
                    shift_status = ev.shiftKey;
                } else if (ev.modifiers) {
                    shift_status = !!(ev.modifiers & 4);
                }
                return (((which >= 65 && which <= 90) && !shift_status) ||
                    ((which >= 97 && which <= 122) && shift_status));
            }

                // prevent opening the login form in the backend frameset
            if (top.location.href != self.location.href) {
                top.location.href = self.location.href;
            }

            ');

        return $JSCode;
    }


    /**
     * Checks if labels from $GLOBALS['TYPO3_CONF_VARS']['BE']['loginLabels'] were changed, and merge them to $GLOBALS['LOCAL_LANG'] if needed
     *
     * This method keeps backwards compatibility, if you modified your
     * labels with the install tool, we recommend to transfer this labels to a locallang.xml file
     * using the llxml extension
     *
     * @return  void
     */
    protected function mergeOldLoginLabels() {
            // Getting login labels
        $oldLoginLabels = trim($GLOBALS['TYPO3_CONF_VARS']['BE']['loginLabels']);
        if ($oldLoginLabels != '') {
                // md5 hash of the default loginLabels string
            $defaultOldLoginLabelsHash = 'bcf0d32e58c6454ea50c6c956f1f18f0';
                // compare loginLabels from TYPO3_CONF_VARS to default value
            if (md5($oldLoginLabels) != $defaultOldLoginLabelsHash) {
                $lang = $GLOBALS['LANG']->lang;
                $oldLoginLabelArray = explode('|',$oldLoginLabels);
                $overrideLabelKeys = array(
                    'labels.username'     => $oldLoginLabelArray[0],
                    'labels.password'     => $oldLoginLabelArray[1],
                    'labels.interface'    => $oldLoginLabelArray[2],
                    'labels.submitLogin'  => $oldLoginLabelArray[3],
                    'labels.submitLogout' => $oldLoginLabelArray[4],
                    'availableInterfaces' => $oldLoginLabelArray[5],
                    'headline'            => $oldLoginLabelArray[6],
                    'info.jscookies'      => $oldLoginLabelArray[7],
                    'newsheadline'        => $oldLoginLabelArray[8],
                    'error.login'         => $oldLoginLabelArray[9],
                );
                if (!is_array($GLOBALS['LOCAL_LANG'][$lang])) {
                    $GLOBALS['LOCAL_LANG'][$lang] = array();
                }
                    // now override the labels from the LOCAL_LANG with the TYPO3_CONF_VARS
                foreach ($overrideLabelKeys as $labelKey => $label) {
                    $GLOBALS['LOCAL_LANG'][$lang][$labelKey] = $GLOBALS['LOCAL_LANG']['default'][$labelKey] = $label;
                }
            }
        }
    }
}


if (defined('TYPO3_MODE') && isset($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']['typo3/index.php'])) {
    include_once($GLOBALS['TYPO3_CONF_VARS'][TYPO3_MODE]['XCLASS']['typo3/index.php']);
}



// Make instance:
$SOBE = t3lib_div::makeInstance('SC_index');
$SOBE->init();
$SOBE->main();
$SOBE->printContent();

?>