<?php
/**
 * Project: 
 * Contenido Content Management System
 * 
 * Description: 
 * Contenido main ajax file
 * 
 * Requirements: 
 * @con_php_req 5.0
 * 
 *
 * @package    Contenido Backend
 * @version    1.0.2
 * @author     Olaf Niemann, Jan Lengowski, Ingo van Peeren
 * @copyright  four for business AG <www.4fb.de>
 * @license    http://www.contenido.org/license/LIZENZ.txt
 * @link       http://www.4fb.de
 * @link       http://www.contenido.org
 * @since      file available since contenido release <= 4.6
 * 
 * {@internal 
 *   created  2008-09-08, Ingo van Peeren
 *   modified 2010-05-20, Murat Purc, standardized Contenido startup and security check invocations, see [#CON-307]
 *   modified 2011-02-08, Dominik Ziegler, removed old PHP compatibility stuff as contenido now requires at least PHP 5
 *
 *   $Id$:
 * }}
 * 
 */

if (!defined("CON_FRAMEWORK")) {
    define("CON_FRAMEWORK", true);
}

// Contenido startup process
include_once ('./includes/startup.php');

$cfg["debug"]["backend_exectime"]["fullstart"] = getmicrotime();

cInclude ("includes", 'functions.api.php');
cInclude ("includes", 'functions.forms.php');

page_open(array('sess' => 'Contenido_Session',
                'auth' => 'Contenido_Challenge_Crypt_Auth',
                'perm' => 'Contenido_Perm'));

i18nInit($cfg["path"]["contenido"].$cfg["path"]["locale"], $belang);

/**
 * Bugfix
 * @see http://contenido.org/forum/viewtopic.php?t=18291
 *
 * added by H. Librenz (2007-12-07)
 */
//includePluginConf();
require_once $cfg['path']['contenido'] . $cfg['path']['includes'] . 'functions.includePluginConf.php';

cInclude ("includes", 'cfg_language_de.inc.php');

# Create Contenido classes
$db = new DB_ConLite;
$notification = new Contenido_Notification;
$classarea = new Area();
$classlayout = new Layout();
$classclient = new Client();
$classuser = new User();

$currentuser = new User();
$currentuser->loadUserByUserID($auth->auth["uid"]);


# change Client
if (isset($changeclient) && is_numeric($changeclient) ) {
    $client = $changeclient;
    unset($lang);
}

# Sprache wechseln
if (isset($changelang) && is_numeric($changelang) ) {
	unset($area_rights);
	unset($item_rights);

    $lang = $changelang;
}

if (!is_numeric($client) ||
	(!$perm->have_perm_client("client[".$client."]") &&
	 !$perm->have_perm_client("admin[".$client."]")))
{
	 // use first client which is accessible
    $sess->register("client");
    $sql = "SELECT idclient FROM ".$cfg["tab"]["clients"]." ORDER BY idclient ASC";
    $db->query($sql);

    while ($db->next_record())
    {
    	$mclient = $db->f("idclient");

    	if ($perm->have_perm_client("client[".$mclient."]") ||
    		$perm->have_perm_client("admin[".$mclient."]") )
    	{
    		unset($lang);
    		$client = $mclient;
    		break;
    	}
    }
} else {
	$sess->register("client");
}

if (!is_numeric($lang) || $lang == "") {
    $sess->register("lang");
    # search for the first language of this client
    $sql = "SELECT * FROM ".$cfg["tab"]["lang"]." AS A, ".$cfg["tab"]["clients_lang"]." AS B WHERE A.idlang=B.idlang AND idclient='".Contenido_Security::toInteger($client)."' ORDER BY A.idlang ASC";
    $db->query($sql);
    $db->next_record();
    $lang = $db->f("idlang");
} else {
	$sess->register("lang");
}

// send right encoding http header
sendEncodingHeader($db, $cfg, $lang);

$perm->load_permissions();

# Create Contenido classes
$xml        = new XML_doc;
$tpl        = new Template;
$backend    = new Contenido_Backend;
//$backend->debug=true;

# Register session variables
$sess->register("sess_area");

if (isset($area)) {
    $sess_area = $area;
} else {
    $area = ( isset($sess_area) && $sess_area != "" ) ? $sess_area : 'login';
}

$sess->register("cfgClient");
$sess->register("errsite_idcat");
$sess->register("errsite_idart");

if ($cfgClient["set"] != "set")
{
 	rereadClients ();
}

# Initialize Contenido_Backend.
# Load all actions from the DB
# and check if permission is
# granted.
if ($cfg["debug"]["rendering"] == true)
{
	$oldmemusage = memory_get_usage();
}

# Select area
$backend->select($area);

$cfg["debug"]["backend_exectime"]["start"] = getmicrotime();

# If $action is set -> User klicked some button/link
# get the appopriate code for this action and evaluate it.

if (isset($action) && $action != "")
{
	if (!isset($idart))
	{
		$idart = 0;
	}

    $backend->log($idcat, $idart, $client, $lang, $action);
}


if (isset($action)) {
    if ($backend->getCode($action) != '') {
        if ($backend->debug == 1) {
            echo '<pre style="font-family: verdana; font-size: 10px"><b>Executing:</b>'."\n";
            echo $backend->getCode($action)."\n";
            echo '</pre>';
        }
        eval($backend->getCode($action));

    } else {
        if ($backend->debug == 1) {
            echo '<pre style="font-family: verdana; font-size: 10px"><b>Executing:</b>'."\n";
            echo "no code available in action\n";
            echo '</pre>';
        }
    }
}

if(isset($_REQUEST['ajax']) && $_REQUEST['ajax'] != '') {
	$oAjax = new Ajax();
	$sReturn = $oAjax->handle($_REQUEST['ajax']);
	echo $sReturn;
} else {
	include_once($cfg['path']['contenido'].$cfg['path']['includes'] ."ajax/include.ajax." . $area . ".php");
}

$cfg["debug"]["backend_exectime"]["end"] = getmicrotime();

if ($cfg["debug"]["rendering"] == true)
{
	echo "Building this page (excluding contenido includes) took: " . ($cfg["debug"]["backend_exectime"]["end"] - $cfg["debug"]["backend_exectime"]["start"])." seconds<br>";
	echo "Building the complete page took: " . ($cfg["debug"]["backend_exectime"]["end"] - $cfg["debug"]["backend_exectime"]["fullstart"])." seconds<br>";

	echo "Include memory usage: ".human_readable_size(memory_get_usage()-$oldmemusage)."<br>";
	echo "Complete memory usage: ".human_readable_size(memory_get_usage())."<br>";
}

/**
 * Start User Tracking (who is online)
 *
 **/
$oActiveUser = new ActiveUsers($db, $cfg, $auth);
$oActiveUser->startUsersTracking();
/**
 *
 * End of the User Tracking
 */

page_close();

?>