index.php

<?php
/**
 * @version   $Id$
 * @package   Joomla
 * @copyright Copyright (C) 2005 Open Source Matters. All rights reserved.
 * @license   http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
 *            Joomla! is free software. This version may have been modified pursuant
 *            to the GNU General Public License, and as distributed it includes or
 *            is derivative of works licensed under the GNU General Public License or
 *            other free or open source software licenses.
 *            See COPYRIGHT.php for copyright notices and details.
 */

// Set flag that this is a parent file
define('_VALID_MOS', 1);

// checks for configuration file, if none found loads installation page
if (!file_exists('configuration.php') || filesize('configuration.php') < 10)
{
	$self = rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . '/';
	header("Location: http://" . $_SERVER['HTTP_HOST'] . $self . "installation/index.php");
	exit();
}

require('globals.php');
require('configuration.php');

// SSL check - $http_host returns <live site url>:<port number if it is 443>
$http_host = explode(':', $_SERVER['HTTP_HOST']);
if ((!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) != 'off' || isset($http_host[1]) && $http_host[1] == 443) && substr($mosConfig_live_site, 0, 8) != 'https://')
{
	$mosConfig_live_site = 'https://' . substr($mosConfig_live_site, 7);
}

require_once('includes/joomla.php');

//Installation sub folder check, removed for work with SVN
if (file_exists('installation/index.php') && $_VERSION->SVN == 0)
{
	define('_INSTALL_CHECK', 1);
	include($mosConfig_absolute_path . '/offline.php');
	exit();
}

// displays offline/maintanance page or bar
if ($mosConfig_offline == 1)
{
	require($mosConfig_absolute_path . '/offline.php');
}

// load system bot group
$_MAMBOTS->loadBotGroup('system');

// trigger the onStart events
$_MAMBOTS->trigger('onStart');

if (file_exists($mosConfig_absolute_path . '/components/com_sef/sef.php'))
{
	require_once($mosConfig_absolute_path . '/components/com_sef/sef.php');
}
else
{
	require_once($mosConfig_absolute_path . '/includes/sef.php');
}
require_once($mosConfig_absolute_path . '/includes/frontend.php');

// retrieve some expected url (or form) arguments
$option = strval(strtolower(mosGetParam($_REQUEST, 'option')));
$Itemid = intval(mosGetParam($_REQUEST, 'Itemid', null));

if ($option == '')
{
	if ($Itemid)
	{
		$query = "SELECT id, link"
			. "\n FROM #__menu"
			. "\n WHERE menutype = 'mainmenu'"
			. "\n AND id = " . (int) $Itemid
			. "\n AND published = 1";
		$database->setQuery($query);
	}
	else
	{
		$query = "SELECT id, link"
			. "\n FROM #__menu"
			. "\n WHERE menutype = 'mainmenu'"
			. "\n AND published = 1"
			. "\n ORDER BY parent, ordering";
		$database->setQuery($query, 0, 1);
	}
	$menu = new mosMenu($database);
	if ($database->loadObject($menu))
	{
		$Itemid = $menu->id;
	}
	$link = $menu->link;
	if (($pos = strpos($link, '?')) !== false)
	{
		$link = substr($link, $pos + 1) . '&Itemid=' . $Itemid;
	}
	parse_str($link, $temp);
	/** this is a patch, need to rework when globals are handled better */
	foreach ($temp as $k => $v)
	{
		$GLOBALS[$k] = $v;
		$_REQUEST[$k] = $v;
		if ($k == 'option')
		{
			$option = $v;
		}
	}
}
if (!$Itemid)
{
// when no Itemid give a default value
	$Itemid = 99999999;
}

// mainframe is an API workhorse, lots of 'core' interaction routines
$mainframe = new mosMainFrame($database, $option, '.');
$mainframe->initSession();

// trigger the onAfterStart events
$_MAMBOTS->trigger('onAfterStart');

// checking if we can find the Itemid thru the content
if ($option == 'com_content' && $Itemid === 0)
{
	$id = intval(mosGetParam($_REQUEST, 'id', 0));
	$Itemid = $mainframe->getItemid($id);
}

/** do we have a valid Itemid yet?? */
if ($Itemid === 0)
{
	/** Nope, just use the homepage then. */
	$query = "SELECT id"
		. "\n FROM #__menu"
		. "\n WHERE menutype = 'mainmenu'"
		. "\n AND published = 1"
		. "\n ORDER BY parent, ordering";
	$database->setQuery($query, 0, 1);
	$Itemid = $database->loadResult();
}

// patch to lessen the impact on templates
if ($option == 'search')
{
	$option = 'com_search';
}

// loads english language file by default
if ($mosConfig_lang == '')
{
	$mosConfig_lang = 'english';
}
include_once($mosConfig_absolute_path . '/language/' . $mosConfig_lang . '.php');

// frontend login & logout controls
$return = strval(mosGetParam($_REQUEST, 'return', NULL));
$message = intval(mosGetParam($_POST, 'message', 0));

// Get the information about the current user from the sessions table
$my = $mainframe->getUser();

if ($option == 'login')
{
	$mainframe->login();

	// JS Popup message
	if ($message)
	{
		?>
		<script language="javascript" type="text/javascript">
			<!--//
			alert("<?php echo addslashes( _LOGIN_SUCCESS ); ?>");
			//-->
		</script>
	<?php
	}

	if ($return && !(strpos($return, 'com_registration') || strpos($return, 'com_login')))
	{
		// checks for the presence of a return url
		// and ensures that this url is not the registration or login pages
		// If a sessioncookie exists, redirect to the given page. Otherwise, take an extra round for a cookiecheck
		if (isset($_COOKIE[mosMainFrame::sessionCookieName()]))
		{
			mosRedirect($return);
		}
		else
		{
			mosRedirect($mosConfig_live_site . '/index.php?option=cookiecheck&return=' . urlencode($return));
		}
	}
	else
	{
		// If a sessioncookie exists, redirect to the start page. Otherwise, take an extra round for a cookiecheck
		if (isset($_COOKIE[mosMainFrame::sessionCookieName()]))
		{
			mosRedirect($mosConfig_live_site . '/index.php');
		}
		else
		{
			mosRedirect($mosConfig_live_site . '/index.php?option=cookiecheck&return=' . urlencode($mosConfig_live_site . '/index.php'));
		}
	}

}
else if ($option == 'logout')
{
	$mainframe->logout();

	// JS Popup message
	if ($message)
	{
		?>
		<script language="javascript" type="text/javascript">
			<!--//
			alert("<?php echo addslashes( _LOGOUT_SUCCESS ); ?>");
			//-->
		</script>
	<?php
	}

	if ($return && !(strpos($return, 'com_registration') || strpos($return, 'com_login')))
	{
		// checks for the presence of a return url
		// and ensures that this url is not the registration or logout pages
		mosRedirect($return);
	}
	else
	{
		mosRedirect($mosConfig_live_site . '/index.php');
	}
}
else if ($option == 'cookiecheck')
{
	// No cookie was set upon login. If it is set now, redirect to the given page. Otherwise, show error message.
	if (isset($_COOKIE[mosMainFrame::sessionCookieName()]))
	{
		mosRedirect($return);
	}
	else
	{
		mosErrorAlert(_ALERT_ENABLED);
	}
}

// detect first visit
$mainframe->detect();

// set for overlib check
$mainframe->set('loadOverlib', false);

$gid = intval($my->gid);

// gets template for page
$cur_template = $mainframe->getTemplate();
/** temp fix - this feature is currently disabled */

/** @global A places to store information from processing of the component */
$_MOS_OPTION = array();

// precapture the output of the component
require_once($mosConfig_absolute_path . '/editor/editor.php');

ob_start();

if ($path = $mainframe->getPath('front'))
{
	$task = strval(mosGetParam($_REQUEST, 'task', ''));
	$ret = mosMenuCheck($Itemid, $option, $task, $gid);

	if ($ret)
	{
		require_once($path);
	}
	else
	{
		mosNotAuth();
	}
}
else
{
	header('HTTP/1.0 404 Not Found');
	echo _NOT_EXIST;
}

$_MOS_OPTION['buffer'] = ob_get_contents();

ob_end_clean();

initGzip();

header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Cache-Control: post-check=0, pre-check=0', false);
header('Pragma: no-cache');

// display the offline alert if an admin is logged in
if (defined('_ADMIN_OFFLINE'))
{
	include($mosConfig_absolute_path . '/offlinebar.php');
}

// loads template file
if (!file_exists($mosConfig_absolute_path . '/templates/' . $cur_template . '/index.php'))
{
	echo _TEMPLATE_WARN . $cur_template;
}
else
{
	require_once($mosConfig_absolute_path . '/templates/' . $cur_template . '/index.php');
	echo '<!-- ' . time() . ' -->';
}

// displays queries performed for page
if ($mosConfig_debug)
{
	echo $database->_ticker . ' queries executed';
	echo '<pre>';
	foreach ($database->_log as $k => $sql)
	{
		echo $k + 1 . "\n" . $sql . '<hr />';
	}
	echo '</pre>';
}

doGzip();