ordersprinter/webapp/php/admin.php

<?php
// Datenbank-Verbindungsparameter
require_once ('dbutils.php');
require_once ('globals.php');
require_once ('utilities/TypeAndProducts/TypeAndProductFileManager.php');
require_once ('utilities/userrights.php');
require_once ('utilities/HistFiller.php');
require_once ('utilities/basedb.php');
require_once ('utilities/sorter.php');
require_once ('utilities/Logger.php');
require_once ('utilities/Emailer.php');

class Admin {
	var $dbutils;
	var $userrights;
	var $histfiller;
	
	private static $timezone = null;
	
	function __construct() {
		$this->dbutils = new DbUtils();
		$this->userrights = new Userrights();
		$this->histfiller = new HistFiller();
	}
	
	function handleCommand($command) {
		// these command are only allowed for user with manager or admin rights
		$cmdArray = array('createNewUser', 'updateUser', 'deleteUser','changepassword' , 'changeConfig', 'readlogo','deletelogo');
		if (in_array($command, $cmdArray)) {
			if (!($this->userrights->hasCurrentUserRight('right_manager')) && !($this->userrights->hasCurrentUserRight('is_admin'))) {
				echo "Benutzerrechte nicht ausreichend!";
				return false;
			}
		}

		if ($command == 'tryAuthenticate') {
			$this->tryAuthenticate($_POST['userid'],$_POST['password'],$_POST['day'],$_POST['month'],$_POST['year'],$_POST['hour'],$_POST['minute'],$_POST["time"]);
		} else if ($command == 'setLastModuleOfUser') {
			$this->setLastModuleOfUser($_POST['view']);
		} else if ($command == 'getViewAfterLogin') {
			$this->getViewAfterLogin();
		} else if ($command == 'isUserAlreadyLoggedIn') {
			$this->isUserAlreadyLoggedIn();
		} else if ($command == 'logout') {
			$this->logout();
		} else if ($command == 'getCurrentUser') {
			$this->getCurrentUser();
		} else if ($command == 'isLoggedinUserAdmin') {
			$this->isLoggedinUserAdmin();
		} else if ($command == 'isLoggedinUserKitchen') {
			$this->isLoggedinUserKitchen();
		} else if ($command == 'isLoggedinUserBar') {
			$this->isLoggedinUserBar();
		} else if ($command == 'isLoggedinUserAdminOrManager') {
			$this->isLoggedinUserAdminOrManager();
		} else if ($command == 'hasUserPaydeskRight') {
			$this->hasUserPaydeskRight();
		} else if ($command == 'getJsonMenuItemsAndVersion') {
			$this->getJsonMenuItemsAndVersion();
		} else if ($command == 'getUserList') {
			$this->getUserList();
		} else if ($command == 'setTime') {
			$this->setTime($_POST['day'],$_POST['month'],$_POST['year'],$_POST['hour'],$_POST['minute']);
		} else if ($command == 'createNewUser') {
			$this->createNewUser(
					$_POST['username'],
					$_POST['password'],
					$_POST['isAdmin'],
					$_POST['rWaiter'],
					$_POST['rKitchen'],
					$_POST['rBar'],
					$_POST['rSupply'],
					$_POST['rPayDesk'],
					$_POST['rStat'],
					$_POST['rBill'],
					$_POST['rProducts'],
					$_POST['rReservation'],
					$_POST['rRating'],
					$_POST['rChangeprice'],
					$_POST['rManager']
					);
		} else if ($command == 'updateUser') {
			$this->updateUser(
					$_POST['userid'],
					$_POST['isAdmin'],
					$_POST['rWaiter'],
					$_POST['rKitchen'],
					$_POST['rBar'],
					$_POST['rSupply'],
					$_POST['rPayDesk'],
					$_POST['rStat'],
					$_POST['rBill'],
					$_POST['rProducts'],
					$_POST['rReservation'],
					$_POST['rRating'],
					$_POST['rChangeprice'],
					$_POST['rManager']
			);
		} else if ($command == 'deleteUser') {
			$this->deleteUser($_POST['userid']);
		} else if ($command == 'changepassword') {
			$this->changepassword($_POST['userid'],$_POST['password']);
		} else if ($command == 'changeOwnPassword') {
			$this->changeOwnPassword($_POST['oldPass'],$_POST['newPass']);
		} else if ($command == 'setUserLanguage') {
			$this->setUserLanguage($_POST['language']);
		} else if ($command == 'setUserReceiptPrinter') {
			$this->setUserReceiptPrinter($_POST['printer']);
		} else if ($command == 'setBtnSize') {
			$this->setBtnSize($_POST['btn'],$_POST['size']);
		} else if ($command == 'changeConfig') {
			$this->changeConfig($_POST['changed']);
		} else if ($command == 'readlogo') {
			$this->readlogo();
		} else if ($command == 'deletelogo') {
			$this->deletelogo();
		} else if ($command == 'getGeneralConfigItems') {
			$this->getGeneralConfigItems(true,null);
		} else if ($command == 'getWaiterSettings') {
			$this->getWaiterSettings();
		// from here on admin rights are needed
		} else if ($command == 'getPayPrintType') {
			$this->getPayPrintType();
		} else if ($command == 'getPayments') {
			$this->getPayments();
		} else if ($command == 'autobackup') {
			$this->backup('auto',$_POST['remoteaccesscode']);
		} else if (($command == 'new') || ($command == 'shutdown') || ($command == 'backup') || ($command == 'restore') || ($command == 'drop') || ($command == 'fill') || ($command == 'fillSampleProdType') || ($command == 'fillSpeisekarte') || ($command == 'assignTaxes')) {
			if ($this->isCurrentUserAdmin()) {
				if ($command == 'fill') {
					$this->fillSampleContent();
					echo json_encode(array("status" => "OK"));
				} else if ($command == 'fillSampleProdType') {
					$this->fillSampleProdType("samples/speisekarte.txt");
					echo json_encode(array("status" => "OK"));
				} else if ($command == 'fillSpeisekarte') {
					$this->fillSpeisekarte($_POST['speisekarte']);
				} else if ($command == 'backup') {
					$this->backup($_GET['type'],null);
					return;
				} else if ($command == 'restore') {
					$this->restore();
					return;
				} else if ($command == 'shutdown') {
					$this->shutdown();
					return;
				} else if ($command == 'assignTaxes') {
					$this->assignTaxes($_POST['food'],$_POST['drinks']);
					return;
				}
			} else {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
			}
		// end area for admins
		} else if ($command == 'exportConfigCsv') {
			if ($this->isCurrentUserAdmin() || $this->hasCurrentUserRight('right_manager')) {
				$this->exportConfigCsv();
			}
		} else if ($command == 'exportUserCsv') {
			if ($this->isCurrentUserAdmin() || $this->hasCurrentUserRight('right_manager')) {
				$this->exportUserCsv();
			}
		} else if ($command == 'setOrderVolume') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->setOrderVolume($_POST['volume']);
			}
		} else if ($command == 'setPreferTableMap') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->setPreferTableMap($_POST['prefertablemap']);
			}
		} else if ($command == 'setKeepTypeLevel') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->setKeepTypeLevel($_POST['keeptypelevel']);
			}
		} else if ($command == 'setApplyExtrasBtnPos') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->setExtrasApplyBtnPos($_POST['applyextrasbtnpos']);
			}
		} else if ($command == 'getOrderVolume') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->getOrderVolume();
			}
		} else if ($command == 'getButtonSizes') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->getButtonSizes();
			}
		} else if ($command == 'getPreferTableMap') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->getPreferTableMap();
			}
		} else if ($command == 'getKeepTypeLevel') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->getKeepTypeLevel();
			}
		} else if ($command == 'getApplyExtrasBtnPos') {
			if ($this->isUserAlreadyLoggedInForPhp()) {
				$this->getApplyExtrasBtnPos();
			}
		} else if ($command == 'isInstalled') {
			$this->isInstalled();
		}
		else {
			echo "Command not supported.";
		}
	}
	
	/***
	 * Is the installation already done? Or was the html/php code overwritten, i.e. a new or updated version to install?
	 */
	private function isInstalled() {
		if(defined('INSTALLSTATUS')){
			if (INSTALLSTATUS == 'new') {
				echo json_encode("No");
			} else {
				echo json_encode("Yes");
			}
		} else {
			// not defined -> it must be version 1.0.3 or lower --> since this is file of 1.0.4: not installed...
			echo json_encode("No");
		}
	}
	
	function isUserAlreadyLoggedInForPhp() {
		if(session_id() == '') {
			session_start();
		}
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			return false;
		} else {
			return true;
		}
	}

	function isUserAlreadyLoggedIn() {
		if(session_id() == '') {
	    	session_start();
		}
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			// no user logged in
			echo json_encode("NO");
		} else {
			echo json_encode("YES");
		}
	}
	
	function logout() {
		if(session_id() == '') {
			session_start();
			session_destroy();
		}
		echo json_encode("OK");
	}
	
	static function isOnlyRatingUser($rightArr,$right_rating,$comparisonVal) {
		foreach($rightArr as $aRight) {
			if ($aRight == $comparisonVal) {
				return false;
			}
		}
		
		if ($right_rating == $comparisonVal) {
			return true;
		} else {
			return false;
		}
	}
	
	// for the login mask - if user is authenticated then the first page works different
	function tryAuthenticate($userid,$password,$day,$month,$year,$hour,$minute,$unixtime) {
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$authenticated = false;
		$sql = "SELECT * FROM %user% WHERE id=? AND active='1'";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($userid));
		$result = $stmt->fetchAll();

		$numberOfEntries = count($result);
		if ($numberOfEntries == 1) {
			$zeile = $result[0];
			$pass_hash = $zeile['userpassword'];

			if ($zeile['is_admin'] == 0) {
				// authentication-check
			}
			
			// password_verify requires PHP > 5.5, so let's use MD5 instead
			// (it is no banking software...)
			if (md5($password) == $pass_hash) {
				$authenticated = true;
			}
		}
		
		
		if ($authenticated) {
			date_default_timezone_set(DbUtils::getTimeZone());
			$now = getdate();
			
			$serverDay = $now["mday"];
			$serverMonth = $now["mon"];
			$serverYear = $now["year"];
			$serverHour = $now["hours"];
			$serverMinute = $now["minutes"];
			$serverTime = $now["0"];
			$timeDiff = 0;
			if (abs($serverTime - $unixtime) > (60*60*2)) {
				$timeDiff = 1;
			}

			ini_set('session.gc_maxlifetime',65535);
			session_set_cookie_params(65535);
			
			if(session_id() == '') {
				session_start();
			}
			$username = $zeile["username"];
			
			$_SESSION['angemeldet'] = true;
			 
			// now read the rights of the user

			$_SESSION['userid'] = $zeile['id'];
			$_SESSION['currentuser'] = $username;
			
			
			$workflow = $this->getConfigItemsAsString($pdo, "workflowconfig");
			
			$rights = array($zeile['is_admin'],$zeile['right_waiter'],$zeile['right_kitchen'],
					$zeile['right_bar'],$zeile['right_supply'],$zeile['right_paydesk'],
					$zeile['right_statistics'],$zeile['right_bill'],$zeile['right_products'],
					$zeile['right_reservation'],$zeile['right_changeprice'],$zeile['right_manager']);
			$right_rating = $zeile['right_rating'];
			
			if (self::isOnlyRatingUser($rights,$right_rating, 1)) {
				$_SESSION['right_rating'] = true;
				
				$_SESSION['is_admin'] = false;
				$_SESSION['right_waiter'] = false;
				$_SESSION['right_kitchen'] = false;
				$_SESSION['right_bar'] = false;
				$_SESSION['right_supply'] = false;
				$_SESSION['right_paydesk'] = false;
				$_SESSION['right_statistics'] = false;
				$_SESSION['right_bill'] = false;
				$_SESSION['right_products'] = false;
				$_SESSION['right_reservation'] = false;
				$_SESSION['right_changeprice'] = false;
				$_SESSION['right_manager'] = false;
				$_SESSION['keeptypelevel'] = false;
			} else {
				$_SESSION['is_admin'] = ($zeile['is_admin'] == 1 ? true : false);
				$_SESSION['right_waiter'] = ($zeile['right_waiter'] == 1 ? true : false);
				if (($workflow == 2) || ($workflow == 3)) {
					$_SESSION['right_kitchen'] = false;
					$_SESSION['right_bar'] = false;
					$_SESSION['right_supply'] = false;
				} else {
					$_SESSION['right_kitchen'] = ($zeile['right_kitchen'] == 1 ? true : false);
					$_SESSION['right_bar'] = ($zeile['right_bar'] == 1 ? true : false);
					$_SESSION['right_supply'] = ($zeile['right_supply'] == 1 ? true : false);
				}
				$_SESSION['right_paydesk'] = ($zeile['right_paydesk'] == 1 ? true : false);
				$_SESSION['right_statistics'] = ($zeile['right_statistics'] == 1 ? true : false);
				$_SESSION['right_bill'] = ($zeile['right_bill'] == 1 ? true : false);
				$_SESSION['right_products'] = ($zeile['right_products'] == 1 ? true : false);
				$_SESSION['right_reservation'] = ($zeile['right_reservation'] == 1 ? true : false);
				$_SESSION['right_rating'] = ($zeile['right_rating'] == 1 ? true : false);
				$_SESSION['right_changeprice'] = ($zeile['right_changeprice'] == 1 ? true : false);
				$_SESSION['right_manager'] = ($zeile['right_manager'] == 1 ? true : false);
				$_SESSION['keeptypelevel'] = ($zeile['keeptypelevel'] == 1 ? true : false);
			}
			
			$this->userrights->setSession($_SESSION['is_admin'], $_SESSION['right_waiter'], $_SESSION['right_kitchen'],
					$_SESSION['right_bar'], $_SESSION['right_supply'], $_SESSION['right_paydesk'], $_SESSION['right_statistics'],
					$_SESSION['right_bill'], $_SESSION['right_products'], $_SESSION['right_reservation'], $_SESSION['right_rating'], $_SESSION['right_changeprice'], $_SESSION['right_manager']);
			
			$assoc = array ("0" => "roombtnsize","1" => "tablebtnsize","2" => "prodbtnsize");
			
			$_SESSION["roombtnsize"] = $zeile['roombtnsize'];
			$_SESSION["tablebtnsize"] = $zeile['tablebtnsize'];
			$_SESSION["prodbtnsize"] = $zeile['prodbtnsize'];
			
			$language = $zeile['language'];
			if (is_null($language)) {
				$language = 0;
			}
			$_SESSION['language'] = intval($language);
			
			$receiptprinter = $zeile['receiptprinter'];
			if (is_null($receiptprinter)) {
				$receiptprinter = 1;
			}
			$_SESSION['receiptprinter'] = intval($receiptprinter);
			
			$preferTm = $zeile['prefertablemap'];
			if (is_null($preferTm)) {
				$preferTm = 1;
			}
			$_SESSION['prefertm'] = intval($preferTm);
			
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			$_SESSION['timezone'] = $this->getTimeZone($pdo);
		}
		
		if ($authenticated) {
			Logger::logcmd("admin","authentication","Login $username successful");
			$loginMessage = $this->getMessage(null,'loginmessage');
			echo json_encode(array("status" => "YES","loginmessage" => $loginMessage, "timediff" => $timeDiff, "isadmin" => $zeile['is_admin'],"lang" => $_SESSION["language"]));
		} else {
			Logger::logcmd("admin","authentication","Login with id $userid failed");
			echo json_encode(array("status" => "NO"));
		}
	}
	
	private function getMessage($pdo,$messageType) {
		if (is_null($pdo)) {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
		}
		$sql = "SELECT value FROM %work% WHERE item=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($messageType));
		$row = $stmt->fetchObject();
		$msg = "";
		if ($stmt->rowCount() > 0) {
			$msg = $row->value;
		}
		return $msg;
	}
	
	function getButtonSizes() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		echo json_encode(self::getButtonSizesCore($pdo));
	}
	
	private static function getButtonSizesCore($pdo) {
		$userid = $_SESSION['userid'];
			
		$sql = "SELECT roombtnsize,tablebtnsize,prodbtnsize FROM %user% WHERE id=?";
	
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($userid));
		$row =$stmt->fetchObject();
	
		$roombtnsize = $row->roombtnsize;
		if (is_null($roombtnsize)) {
			$roombtnsize = 0;
		}
	
		$tablebtnsize = $row->tablebtnsize;
		if (is_null($tablebtnsize)) {
			$tablebtnsize = 0;
		}
	
		$prodbtnsize = $row->prodbtnsize;
		if (is_null($prodbtnsize)) {
			$prodbtnsize = 0;
		}
	
		return(array("roombtnsize" => $roombtnsize,"tablebtnsize" => $tablebtnsize,"prodbtnsize" => $prodbtnsize));
	}
	
	private static function getUserValue($item,$defaultvalue) {
		$userid = $_SESSION['userid'];
			
		$sql = "SELECT $item AS result FROM %user% WHERE id=?";
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$stmt = $pdo->prepare(Dbutils::substTableAlias($sql));
		$stmt->execute(array($userid));
		if ($stmt->rowCount() == 0) {
			return $defaultvalue;
		}
		$row = $stmt->fetchObject();
		$aVal = 0;
		if ($row != null) {
			$aVal = $row->result;
			if ($aVal == null) {
				$aVal = $defaultvalue;
			}
		}
		
		echo json_encode($aVal);
	}
	
	function getPreferTableMap() {
		self::getUserValue('prefertablemap',1);
	}
	
	function getKeepTypeLevel() {
		self::getUserValue('keeptypelevel',1);
	}
	
	function getApplyExtrasBtnPos() {
		self::getUserValue('extrasapplybtnpos', 1);
	}
	
	function getOrderVolume() {
		self::getUserValue('ordervolume',0);
	}
	
	private static function setUserValue($item,$theValue) {
		$userid = $_SESSION['userid'];
			
		$sql = "UPDATE %user% SET $item=? WHERE id=?";
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$pdo->beginTransaction();
			
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($theValue,$userid));
		$pdo->commit();
		echo json_encode(array("status" => "OK"));
	} 
	function setOrderVolume($volume) {
		self::setUserValue('ordervolume', $volume);
	}
	function setPreferTableMap($preferValue) {
		self::setUserValue('prefertablemap',$preferValue);
	}
	function setKeepTypeLevel($preferValue) {
		self::setUserValue('keeptypelevel',$preferValue);
	}
	function setExtrasApplyBtnPos($preferValue) {
		self::setUserValue('extrasapplybtnpos',$preferValue);
	}
	
	function setLastModuleOfUser($view) {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			if ($view != "logout.php") {
				$userid = $_SESSION['userid'];
				
				$questPos = strpos($view,'?');
				if ($questPos != false) {
					$view = substr($view,0,$questPos);
				}
				
				$sql = "UPDATE %user% SET lastmodule=? WHERE id=? AND active='1'";
				$pdo = $this->dbutils->openDbAndReturnPdo();
				
				$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
				$stmt->execute(array($view,$userid));
			}
			echo json_encode(array("status" => "OK"));
		} else {
			echo json_encode(array("status" => "Error","msg" => "Benutzer nicht eingeloggt"));
		}
	}
	
	public function getConfigItemsAsString($pdo,$key) {
		$sql = "SELECT setting FROM %config% WHERE name=?";
		
		if (is_null($pdo)) {
			return "";
		}
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($key));
		$row = $stmt->fetchObject();

		if ($stmt->rowCount() == 0) {
			return "";
		}
		
		$theValue = $row->setting;
		
		if (is_null($theValue)) {
			return "";
		} else {
			return $theValue; 
		}
	}	
	
	public static function overruleTimeZone($timezone) {
		self::$timezone = $timezone;
		DbUtils::overruleTimeZone($timezone);
	}
	
	public function getTimeZone($pdo) {
		if (is_null(self::$timezone)) {
			$timezone = $this->getConfigItemsAsString($pdo, "timezone");
			if ($timezone == "") {
				$timezone = "Europe/Berlin";
			}
			return $timezone;
		} else {
			return self::$timezone;
		}
	}
	public function getEnv($pdo) {
		$installdate = $this->getConfigItemsAsString($pdo, "installdate");
		$lastupdate = $this->getConfigItemsAsString($pdo, "lastupdate");
		$version = $this->getConfigItemsAsString($pdo, "version");
		return(array("version" => $version, "installdate" => $installdate, "lastupdate" => $lastupdate));
	}
	
	private function getWaiterSettings() {

		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$userLoggedIn = $this->isUserAlreadyLoggedInForPhp();
		if (!$userLoggedIn) {
			$retVal = array("isUserLoggedIn" => 0);
			echo json_encode($retVal);
			return;
		}

		$configItems = join(",",array("'decpoint'","'version'","'cancelunpaidcode'","'tax'","'togotax'","'currency'","'workflowconfig'","'prominentsearch'","'discount1'","'discount2'","'discount3'"));
		$sql = "select name,setting FROM %config% WHERE name in ($configItems)";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$configitems = $stmt->fetchAll();
		
		$configresult = array();
		foreach($configitems as $item) {
			$configresult[$item["name"]] = $item["setting"];
		}
		
		$userlang = 0;
		$right_changeprice = 0;
		$supplyRight = 0;
		if ($userLoggedIn) {
			$sql = "SELECT language,right_supply,right_changeprice,keeptypelevel,extrasapplybtnpos FROM %user% WHERE id=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($_SESSION['userid']));
			$row = $stmt->fetchObject();
		}

		$buttonSizes = self::getButtonSizesCore($pdo);
		
		$jsonMenuItems = $this->getJsonMenuItemsAndVersionCore();
		
		$retVal = array("config" => $configresult,
				"rightchangeprice" => $row->right_changeprice,
				"supplyright" => $row->right_supply,
				"userlanguage" => $row->language,
				"buttonsizes" => $buttonSizes,
				"keeptypelevel" => $row->keeptypelevel,
				"extrasapplybtnpos" => $row->extrasapplybtnpos,
				"isUserLoggedIn" => 1,
				"jsonMenuItemsAndVersion" => $jsonMenuItems
		);
		echo json_encode($retVal);
	}
	
	
	public function getGeneralConfigItems($forHtml,$pdo) {
		$userLoggedIn = $this->isUserAlreadyLoggedInForPhp();
		if ($userLoggedIn || (!$forHtml)) {
			
			$sql = "SELECT count(id) as number,setting FROM %config% WHERE name=?";
			if (is_null($pdo)) {
				$pdo = $this->dbutils->openDbAndReturnPdo();
			}
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			
			$stmt->execute(array("companyinfo"));
			$row = $stmt->fetchObject();
			$companyInfo = $row->setting;
			
			$stmt->execute(array("decpoint"));
			$row = $stmt->fetchObject();
			$decpoint = $row->setting;
			
			$stmt->execute(array("version"));
			$row = $stmt->fetchObject();
			$version = $row->setting;
			
			$stmt->execute(array("payprinttype"));
			$row = $stmt->fetchObject();
			$payprinttype = $row->setting;
			
			$stmt->execute(array("cancelunpaidcode"));
			$row = $stmt->fetchObject();
			$cancelunpaidcode = $row->setting;
			
			$stmt->execute(array("tax"));
			$row = $stmt->fetchObject();
			$tax = $row->setting;
			
			$stmt->execute(array("togotax"));
			$row = $stmt->fetchObject();
			$togotax = $row->setting;
			
			$stmt->execute(array("serverurl"));
			$row = $stmt->fetchObject();
			$serverurl = $row->setting;
			
			$stmt->execute(array("email"));
			$row = $stmt->fetchObject();
			$email = $row->setting;
			
			$stmt->execute(array("bigfontworkreceipt"));
			$row = $stmt->fetchObject();
			$bigfontworkreceipt = $row->setting;
			
			$stmt->execute(array("prominentsearch"));
			$row = $stmt->fetchObject();
			$prominentsearch = $row->setting;
			
			$stmt->execute(array("discount1"));
			$row = $stmt->fetchObject();
			$discount1 = $row->setting;
			$stmt->execute(array("discount2"));
			$row = $stmt->fetchObject();
			$discount2 = $row->setting;
			$stmt->execute(array("discount3"));
			$row = $stmt->fetchObject();
			$discount3 = $row->setting;
			$stmt->execute(array("austria"));
			$row = $stmt->fetchObject();
			$austria = $row->setting;
			$stmt->execute(array("digigopaysetready"));
			$row = $stmt->fetchObject();
			$digigopaysetready = $row->setting;
			if (is_null($digigopaysetready)) {
				$digigopaysetready = 1;
			}
			
			$stmt->execute(array("groupworkitems"));
			$row = $stmt->fetchObject();
			$groupworkitems = $row->setting;
			if (is_null($groupworkitems)) {
				$groupworkitems = 1;
			}
			
			// for update reasons check for null
			$stmt->execute(array("receiveremail"));
			$row = $stmt->fetchObject();
			$receiveremail = "";
			if (!is_null($row)) {
				$receiveremail = $row->setting;
			}
			set_error_handler(function() { /* ignore errors */ });
			try {
				$stmt->execute(array("emailbadrating"));
				$row = $stmt->fetchObject();
				$emailbadrating = "";
				if (!is_null($row)) {
					$emailbadrating = $row->setting;
				}
			} catch (Exception $e) {
				// in previous version this was not configurable
				$emailbadrating = "";
			}
			try {
				$stmt->execute(array("emailratingcontact"));
				$row = $stmt->fetchObject();
				$emailratingcontact = "";
				if (!is_null($row)) {
					$emailratingcontact = $row->setting;
				}
			} catch (Exception $e) {
				// in previous version this was not configurable
				$emailratingcontact = "";
			}
			restore_error_handler();
			
			$stmt->execute(array("billlanguage"));
			$row = $stmt->fetchObject();
			$billlanguage = $row->setting;
			
			$stmt->execute(array("currency"));
			$row = $stmt->fetchObject();
			$currency = $row->setting;
			
			$stmt->execute(array("receiptfontsize"));
			$row = $stmt->fetchObject();
			$receiptfontsize = $row->setting;
			
			$stmt->execute(array("reservationnote"));
			$row = $stmt->fetchObject();
			$reservationnote = $row->setting;
			
			set_error_handler(function() { /* ignore errors */ });
			
			
			$paymentconfig = $this->getConfigItemOrDefault("paymentconfig", $stmt, 0);
			$workflowconfig = $this->getConfigItemOrDefault("workflowconfig", $stmt, 0);
			
			$smtphost = "";
			$smtpauth = 1;
			$smtpuser = "";
			$smtppass = "";
			$smtpsecure = 1;
			$smtpport = "";
		
			if ($_SESSION['is_admin'] || $_SESSION['right_manager']) {
				$smtphost = $this->getConfigItemOrDefault("smtphost",$stmt,"");
				$smtpauth = $this->getConfigItemOrDefault("smtpauth",$stmt,1);
				$smtpuser = $this->getConfigItemOrDefault("smtpuser",$stmt,"");
				$smtppass = $this->getConfigItemOrDefault("smtppass",$stmt,"");
				$smtpsecure = $this->getConfigItemOrDefault("smtpsecure",$stmt,1);
				$smtpport = $this->getConfigItemOrDefault("smtpport",$stmt,"");
			}
			
			$paydeskid = $this->getConfigItemOrDefault("paydeskid",$stmt,"");
			$aeskey = $this->getConfigItemOrDefault("aeskey",$stmt,"");
			$certificatesn = $this->getConfigItemOrDefault("certificatesn", $stmt, "");
			
			$webimpressum = $this->getConfigItemOrDefault("webimpressum",$stmt,"");
			
			restore_error_handler();
			
			$userlang = 0; // of no interest, if not called from web
			$receiptprinter = 1; // of no interest, if not called from web
			$right_changeprice = 0;
			if ($userLoggedIn) {
				$userlang = $_SESSION["language"];
				$receiptprinter = $_SESSION['receiptprinter'];
				$right_changeprice = ($_SESSION['right_changeprice'] ? 1 : 0);
			}
			
			date_default_timezone_set(DbUtils::getTimeZone());
			$now = getdate();
			
			$retVal = array("companyinfo" => $companyInfo, "version" => $version, "decpoint" => $decpoint,
					"serverurl" => $serverurl, "email" => $email, "receiveremail" => $receiveremail, "billlanguage" => $billlanguage,
					"payprinttype" => $payprinttype, "tax" => $tax, "togotax" => $togotax, "currency" => $currency,
					"userlanguage" => $userlang, "receiptprinter" => $receiptprinter,
					"receiptfontsize" => $receiptfontsize, "reservationnote" => $reservationnote, "paymentconfig" => $paymentconfig,
					"workflowconfig" => $workflowconfig, "emailratingcontact" => $emailratingcontact,"emailbadrating" => $emailbadrating,
					"rightchangeprice" => $right_changeprice, "bigfontworkreceipt" => $bigfontworkreceipt, "prominentsearch" => $prominentsearch,"groupworkitems" => $groupworkitems,
					"sday" => $now["mday"],"smonth" => $now["mon"], "syear" => $now["year"], "shour" => $now["hours"], "smin" => $now["minutes"],
					"smtphost" => $smtphost,"smtpauth" => $smtpauth,"smtpuser" => $smtpuser,"smtppass" => $smtppass,"smtpsecure" => $smtpsecure,"smtpport" => $smtpport,
					"webimpressum" => $webimpressum, "cancelunpaidcode" => $cancelunpaidcode, "discount1" => $discount1,"discount2" => $discount2,"discount3" => $discount3,
					"austria" => $austria, "digigopaysetready" => $digigopaysetready, "paydeskid" => $paydeskid, "aeskey" => $aeskey, "certificatesn" => $certificatesn
			);

			if ($forHtml) {
				echo json_encode(array("status" => "OK", "msg" => $retVal));
			} else {
				return $retVal;
			}
		} else {
			if ($forHtml) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
			} else {
				return null;
			}
		}
	}
	
	function getConfigItemOrDefault($item,$stmt,$default) {
		try {
			$stmt->execute(array($item));
			$row = $stmt->fetchObject();
			$ret = $default;
			
			if ($row) {
				if (($row->number) > 0) {
					$ret = $row->setting;
				} else {
					$ret = $default;
				}
			}
		} catch (Exception $e) {
			$ret = $default;
		}
		return $ret;
	}
	
	function getViewAfterLogin() {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			$userid = $_SESSION['userid'];
			
			$rights = array($_SESSION['is_admin'],$_SESSION['right_waiter'],$_SESSION['right_kitchen'],
					$_SESSION['right_bar'],$_SESSION['right_supply'],$_SESSION['right_paydesk'],
					$_SESSION['right_statistics'],$_SESSION['right_bill'],$_SESSION['right_products'],
					$_SESSION['right_reservation'],$_SESSION['right_changeprice'],$_SESSION['right_manager']);
			$right_rating = $_SESSION['right_rating'];
			
			if (self::isOnlyRatingUser($rights, $right_rating, true)) {
				// rating user always goes into that view - important setting after creation of user
				echo json_encode("rating.html");
				return;
			}
			
			$sql = "SELECT lastmodule FROM %user% WHERE id=? AND active='1'";
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($userid));
			$row =$stmt->fetchObject();
			
			$view = "preferences.html";
			if ($row != null) {
				$newView = $row->lastmodule;
				if ($newView != null) {
					$view = $newView;
				}
			}
			
			// test if user has still the right to go into that view
			$mapping = array (
					"waiter.html" => 'right_waiter',
					"kitchen.html" => 'right_kitchen',
					"bar.html" => 'right_bar',
					"supplydesk.html" => 'right_supply',
					"paydesk.html" => 'right_paydesk',
					"reports.html" => 'right_statistics',
					"bill.html" => 'right_bill',
					"products.html" => 'right_products',
					"reservation.html" => 'right_reservation',
					"rating.html" => 'right_rating'
					);
			
			$valid = false;
			if (($view == 'preferences.html') || ($view == 'feedback.html')) {
				// always ok
				$valid = true;
			} else if ($view == 'manager.html') {
				if (($_SESSION['is_admin'] == 1) || ($_SESSION['right_manager'] == 1)) {
					$valid = true;
				}
			} else {
				if (($view == "index.html") ||  ($_SESSION[$mapping[$view]] == 1)) {
					$valid = true;
				}
			}
			if ($valid == false) {
				$view = "preferences.html";
			}
			
			echo json_encode($view);
		}
	}
	
	// for client request
	function isLoggedinUserAdmin() {
		if ($this->isCurrentUserAdmin()) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function isLoggedinUserAdminOrManager() {
		if ($this->hasCurrentUserRight('is_admin') || $this->hasCurrentUserRight('right_manager')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function isLoggedinUserKitchen() {
		if ($this->hasCurrentUserRight('right_kitchen')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function isLoggedinUserBar() {
		if ($this->hasCurrentUserRight('right_bar')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function hasUserPaydeskRight() {
		if ($this->hasCurrentUserRight('right_paydesk')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function hasUserReservationRight() {
		if ($this->hasCurrentUserRight('right_reservation')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function hasCurrentUserRight($whichRight) {
		if(session_id() == '') {
	    	session_start();
		}
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			// no user logged in
			return false;
		} else {
			return ($_SESSION[$whichRight]);
		}
	}
	
	// for internal request
	function isCurrentUserAdmin() {
		return $this->hasCurrentUserRight('is_admin');
	}


	function fillSampleContentBySqlFile($pdo,$sqlFile) {
		$handle = fopen ($sqlFile, "r");
		while (!feof($handle)) {
			$sql = fgets($handle);
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute();
		}
		fclose ($handle);
	}
	
	private function fillSampleProdType($fileName) {	
		$speisekartenHandler = new TypeAndProductFileManager();
		$speisekartenHandler->manageSpeisekarteFile($fileName);
		
		$this->histfiller->readProdTableAndSendToHist();
	}
	
	private function assignTaxes($foodTax,$drinksTax) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$pdo->beginTransaction();
		
		try {
			if ($foodTax < 0) {
				$foodTax = null;
			} else {
				$foodTax = str_replace(",",".",$foodTax);
			}
			if ($drinksTax < 0) {
				$drinksTax = null;
			} else {
				$drinksTax = str_replace(",",".",$drinksTax);
			}
			
			$sql = "UPDATE %products%,%prodtype% SET %products%.tax=? WHERE %products%.category=%prodtype%.id AND %prodtype%.kind=? AND %products%.removed is null AND %prodtype%.removed is null";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));

			$stmt->execute(array($foodTax,0));
			$stmt->execute(array($drinksTax,1));
			
			$this->histfiller->readAllProdsAndFillHistByDb($pdo);
			
			$pdo->commit();
			echo json_encode (array("status" => "OK"));
		} catch (Exception $e) {
			$pdo->rollBack();
			echo json_encode(array("status" => "ERROR", "code" => NUMBERFORMAT_ERROR, "msg" => NUMBERFORMAT_ERROR_MSG));
		}
		
	}
	
	private function fillSpeisekarte($speisekarte) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		
		$ret = $this->fillSpeisekarteCore($pdo,$speisekarte);
		if ($ret["status"] != "OK") {
			$pdo->rollBack();
		} else {
			$pdo->commit();
		}
		echo json_encode($ret);
	}
	
	public function fillSpeisekarteCore($pdo,$speisekarte) {
		$sql = "DELETE FROM %extrasprods%";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();

		$speisekartenHandler = new TypeAndProductFileManager();
		
		$ret = $speisekartenHandler->manageSpeisekarte($pdo,$speisekarte);
		
		if ($ret["status"] == "OK") {
			$sorter = new Sorter();
			$sorter->initSortCurrentProductTable($pdo);
		}
		return $ret;
	}
	
	private function fillSampleContent()
	{
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		// first remove previous content, then fill the SQL file
		$sql = "DELETE FROM `%queue%`";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$this->fillSampleContentBySqlFile($pdo,"samples/queuecontent.txt");
		
		$sql = "DELETE FROM `%hist%` WHERE action='3' OR action='7' OR action='8'";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		
		$sql = "DELETE FROM `%histuser%`";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		
		$sql = "DELETE FROM `%user%`";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$this->fillSampleContentBySqlFile($pdo,"samples/usercontent.txt");

		$this->histfiller->readUserTableAndSendToHist($pdo);
	}
	
	function getJsonMenuItemsAndVersion() {
		echo json_encode($this->getJsonMenuItemsAndVersionCore());
	}
	
	/*
	 * Return all the entries for the main menu (the modules)
	 */
	private function getJsonMenuItemsAndVersionCore() {
		if(session_id() == '') {
			session_start();
		}
		$mainMenu = array();
		$currentUser = "";
		$waiterMessage = "";
		$loggedIn = true;
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			// no user logged in
			$mainMenu[] = array("name" => "Startseite", "link" => "index.html");
			$loggedIn = false;
		} else {
			$lang = $_SESSION['language'];
			$kitchentxt = array("K&uuml;che","Kitchen","Cocina");
			$waitertxt = array("Kellner","Waiter","Camarero");
			$paydesktxt = array("Kasse","Paydesk","Caja");
			$settingtxt = array("Einstellungen","Preferences","Propriedades");
			$admintxt = array("Verwaltung","Administration","Administrar");
			$supplytxt = array("Bereitstellung","Supply desk","Preparado");
			$prodtxt = array("Angebot","Products","Productos");
			$restxt = array("Reservierung","Reservation","Reserva");
			$bontxt = array("Kassenbons","Receipts","Tiques");
			$stattxt = array("Statistik","Statistics","Estadisticas");
			$ratingtxt = array("Bewertung","Rating","Valoración");
			$logout = array("Abmelden","Log out","Adios");
			
			$rights = array($_SESSION['is_admin'],$_SESSION['right_waiter'],$_SESSION['right_kitchen'],
					$_SESSION['right_bar'],$_SESSION['right_supply'],$_SESSION['right_paydesk'],
					$_SESSION['right_statistics'],$_SESSION['right_bill'],$_SESSION['right_products'],
					$_SESSION['right_reservation'],$_SESSION['right_changeprice'],$_SESSION['right_manager']);
			$right_rating = $_SESSION['right_rating'];
			
			if (!self::isOnlyRatingUser($rights, $right_rating, true)) {		
				if ($_SESSION['right_waiter']) { $mainMenu[] = array("name" => $waitertxt[$lang], "link" => "waiter.html?v=1.1.27"); };
				if ($_SESSION['right_kitchen']) { $mainMenu[] = array("name" => $kitchentxt[$lang], "link" => "kitchen.html?v=1.1.27"); };
				if ($_SESSION['right_bar']) { $mainMenu[] = array("name" => "Bar", "link" => "bar.html?v=1.1.27"); };
				if ($_SESSION['right_supply']) { $mainMenu[] = array("name" => $supplytxt[$lang], "link" => "supplydesk.html?v=1.1.27"); };
				if ($_SESSION['right_paydesk']) { $mainMenu[] = array("name" => $paydesktxt[$lang], "link" => "paydesk.html"); };
				if ($_SESSION['right_statistics']) { $mainMenu[] = array("name" => $stattxt[$lang], "link" => "reports.html?v=1.1.27"); };
				if ($_SESSION['right_bill']) { $mainMenu[] = array("name" => $bontxt[$lang], "link" => "bill.html?v=1.1.27"); };
				if ($_SESSION['right_products']) { $mainMenu[] = array("name" => $prodtxt[$lang], "link" => "products.html?v=1.1.27");	};
				if ($_SESSION['right_reservation']) { $mainMenu[] = array("name" => $restxt[$lang], "link" => "reservation.html?v=1.1.27"); };
				if ($_SESSION['right_rating']) { $mainMenu[] = array("name" => $ratingtxt[$lang], "link" => "rating.html?v=1.1.27"); };
				if ($_SESSION['right_manager'] || $_SESSION['is_admin']) { $mainMenu[] = array("name" => $admintxt[$lang], "link" => "manager.html?v=1.1.27"); };
				$mainMenu[] = array("name" => $settingtxt[$lang], "link" => "preferences.html?v=1.1.27");
				$mainMenu[] = array("name" => "Feedback", "link" => "feedback.html?v=1.1.27");
			}
			
			$mainMenu[] = array("name" => $logout[$lang], "link" => "logout.php");
			$currentUser = $_SESSION['currentuser'];
			
			$waiterMessage = $this->getMessage(null, "waitermessage");
		}
		// CAUTION: change version also in config.txt!!!
		$mainMenuAndVersion = array ("version" => "OrderSprinter 1.1.27", 
				"user" => $currentUser, 
				"menu" => $mainMenu, 
				"waitermessage" => $waiterMessage,
				"loggedin" => ($loggedIn ? 1:0)
		);
		return($mainMenuAndVersion);
	}
	
	function getUserList() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "SELECT * FROM %user% WHERE active='1' ORDER BY is_admin";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		echo json_encode($result);
	}
	
	function setTime($day,$month,$year,$hour,$min) {
		if (!($this->userrights->hasCurrentUserRight('is_admin'))) {
			echo json_encode (array("status" => "ERROR","msg" => "Benutzerrechte nicht ausreichend!"));
			return false;
		} else {
			
			$txt = sprintf("%02d", $month) .  sprintf("%02d", $day) .  sprintf("%02d", $hour) .  sprintf("%02d", $min) . $year = substr($year, -2);;

			try {
				if (substr(php_uname(), 0, 7) == "Windows"){
					echo json_encode (array("status" => "ERROR","msg" => "Zeit auf Windows-Server kann nicht gesetzt werden!"));
					return false;
				}
				else {
					$cmd = "date \"$txt\"";
					shell_exec($cmd . " > /dev/null &");
				}
			} catch(Exception $e) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_SCRIPT_NOT_EXECUTABLE, "msg" => ERROR_SCRIPT_NOT_EXECUTABLE_MSG));
			}
			
			$this->getGeneralConfigItems(true,null);
		}
	}

	
	function createNewUser($username, $password, $isAdmin, $rWaiter, $rKitchen, $rBar, $rSupply, $rPayDesk, $rStat, $rBill, $rProducts, $rReservation, $rRating, $rChangeprice, $rManager) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$sql = "SELECT count(id) as countid FROM %user% WHERE active='1' AND username=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($username));
		$row = $stmt->fetchObject();

		if ($row->countid > 0) {
			echo json_encode("exists");
			return;
		} else {
			// create the new user
			
			if(session_id() == '') {
				session_start();
			}			
			$lang = $_SESSION['language'];

			if ($isAdmin && !($this->isCurrentUserAdmin())) {
				echo json_encode("noadmin");
				return;
			} else {
				// instead if password_hash (PHP > 5.5) use MD5...
				$password_hash = md5($password);
				$userInsertSql = "INSERT INTO `%user%` (`id` , `username` , `userpassword`, `is_admin`, `right_waiter`,`right_kitchen`,`right_bar`,`right_supply`,`right_paydesk`,`right_statistics`,`right_bill`,`right_products`,`right_reservation`,`right_rating`,`right_changeprice`,`right_manager`,`language`,`receiptprinter`,`prefertablemap`,`keeptypelevel`,`extrasapplybtnpos`,`active`) VALUES (";
				$userInsertSql .= " NULL, ?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($userInsertSql));
				$stmt->execute(array($username,$password_hash,$isAdmin,$rWaiter,$rKitchen,$rBar,$rSupply,$rPayDesk,$rStat,$rBill,$rProducts,$rReservation,$rRating,$rChangeprice,$rManager,$lang,1,1,0,1,1));
				
				$lastId = $pdo->lastInsertId();

				echo json_encode("OK");
			}
		}
		
		// now this has to be logged in the history tables...
		$this->histfiller->createUserInHist($pdo,$lastId,$username, 
				$isAdmin,$rWaiter,$rKitchen,$rBar,$rSupply,$rPayDesk,$rStat,$rBill,$rProducts,$rReservation,$rRating,$rChangeprice,$rManager);
	}
	
	function getPayPrintType() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$this->sendJsonValueFromConfigTable($pdo,'payprinttype');
	}
	
	function getPayments() {
		if(session_id() == '') {
			session_start();
		}
		$pdo = $this->dbutils->openDbAndReturnPdo();
		
		$lang = $_SESSION['language'];
		$sql = "SELECT id,name FROM %payment%";
		if ($lang == 1) {
			$sql = "SELECT id,name_en as name FROM %payment%";
		} else if ($lang == 2) {
			$sql = "SELECT id,name_esp as name FROM %payment%";
		}
		
		$stmt_query = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		
		$stmt_query->execute();
		$result = $stmt_query->fetchAll();
		$retArray = array();
		
		foreach($result as $row) {
			$entry = array("id"=> $row['id'], "name" => $row['name']);
			$retArray[] = $entry;
		}
		echo json_encode($retArray);
	}
	
	function sendJsonValueFromConfigTable($pdo,$whichValue) {
		$theVal = $this->getValueFromConfigTable($pdo,$whichValue);
		if ($theVal == null) {
			echo json_encode("");
		} else {
			echo json_encode($theVal);
		}
	}
	
	function getValueFromConfigTable($pdo,$whichValue) {
		$sql = "SELECT count(id) as countid,setting FROM %config% WHERE name=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($whichValue));
		$row = $stmt->fetchObject();

		$numberOfEntries = $row->countid;
		$theValue = null;
		if ($numberOfEntries == 1) {
			$theValue = $row->setting;
		}
		return $theValue;
	}

	private function deletelogo() {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$this->changeOneConfigDbItem($pdo, "logoimg", null,"%logo%",false);
		echo json_encode("OK");
	}
	
	private function readlogo() {
	
		if ($_FILES['logofile']['error'] != UPLOAD_ERR_OK               //checks for errors
				&& is_uploaded_file($_FILES['logofile']['tmp_name'])) { //checks that file is uploaded
			header("Location: ../infopage.html?e=manager.html=Kann_Datei_nicht_laden.");
			exit();
		}
		
		if(!file_exists($_FILES['logofile']['tmp_name']) || !is_uploaded_file($_FILES['logofile']['tmp_name'])) {
			header("Location: ../infopage.html?e=manager.html=Datei_nicht_angegeben.");
			exit();
		}
		
		$content = file_get_contents($_FILES['logofile']['tmp_name']);

		if ($_FILES['logofile']['error'] != UPLOAD_ERR_OK               //checks for errors
				&& is_uploaded_file($_FILES['logofile']['tmp_name'])) { //checks that file is uploaded
			header("Location: ../infopage.html?e=manager.html=Kann_Datei_nicht_laden.");
			exit();
		}

		if (strlen($content) > 65535) {
			header("Location: ../infopage.html?e=manager.html=Logobild_muss_kleiner_als_64_Kilobytes_sein!");
			exit();
		}
		
		$pdo = $this->dbutils->openDbAndReturnPdo();

		$this->changeOneConfigDbItem($pdo, "logoimg", $content,"%logo%",false);

		header("Location: ../infopage.html?i=manager.html=Import_war_erfolgreich."); /* Browser umleiten */
		exit;
	}
	
	function changeConfig($changedValues) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$assoc_vals = array(
				"usstval" => array("dbcol" => "tax","checknum" => 1),
				"togotaxval" => array("dbcol" => "togotax","checknum" => 1),
				"stornocode" => array("dbcol" => "stornocode","checknum" => 0),
				"printpass" => array("dbcol" => "printpass","checknum" => 0),
				"companyinfo" => array("dbcol" => "companyinfo","checknum" => 0),
				"serverUrl" => array("dbcol" => "serverurl","checknum" => 0),
				"email" => array("dbcol" => "email","checknum" => 0),
				"emailbadrating" => array("dbcol" => "emailbadrating","checknum" => 0),
				"emailratingcontact" => array("dbcol" => "emailratingcontact","checknum" => 0),
				"receiveremail" => array("dbcol" => "receiveremail","checknum" => 0),
				"payprinttype" => array("dbcol" => "payprinttype","checknum" => 0),
				"paymentconfig" => array("dbcol" => "paymentconfig","checknum" => 0),
				"bigfontworkreceipt" => array("dbcol" => "bigfontworkreceipt","checknum" => 0),
				"prominentsearch" => array("dbcol" => "prominentsearch","checknum" => 0),
				"discount1" => array("dbcol" => "discount1","checknum" => 0),
				"discount2" => array("dbcol" => "discount2","checknum" => 0),
				"discount3" => array("dbcol" => "discount3","checknum" => 0),
				"austria" => array("dbcol" => "austria","checknum" => 0),
				"digigopaysetready" => array("dbcol" => "digigopaysetready","checknum" => 0),
				"groupworkitems" => array("dbcol" => "groupworkitems","checknum" => 0),
				"workflowconfig" => array("dbcol" => "workflowconfig","checknum" => 0),
				"receiptfontsize" => array("dbcol" => "receiptfontsize","checknum" => 0),
				"billlanguage" => array("dbcol" => "billlanguage","checknum" => 0),
				"reservationnote" => array("dbcol" => "reservationnote","checknum" => 0),
				"remoteaccesscode" => array("dbcol" => "remoteaccesscode","checknum" => 0),
				"webimpressum" => array("dbcol" => "webimpressum","checknum" => 0),
				"cancelunpaidcode" => array("dbcol" => "cancelunpaidcode","checknum" => 0),
				"smtphost" => array("dbcol" => "smtphost","checknum" => 0),
				"smtpauth" => array("dbcol" => "smtpauth","checknum" => 1),
				"smtpuser" => array("dbcol" => "smtpuser","checknum" => 0),
				"smtppass" => array("dbcol" => "smtppass","checknum" => 0),
				"smtpsecure" => array("dbcol" => "smtpsecure","checknum" => 1),
				"smtpport" => array("dbcol" => "smtpport","checknum" => 0),
				
				"paydeskid" => array("dbcol" => "paydeskid","checknum" => 0),
				"aeskey" => array("dbcol" => "aeskey","checknum" => 0),
				"certificatesn" => array("dbcol" => "certificatesn","checksum" => 0)
		);
		$problem = false;
		foreach ($changedValues as $aChangeSet) {
			$name = $aChangeSet['name'];
			$aVal = $aChangeSet['value'];
			
			if ($name == "payprinttype") {
				// special care: 1->l 2->s
				if (((string)$aVal) == "1") {
					$aVal = "l";
				}
				if (((string)$aVal) == "2") {
					$aVal = "s";
				}
			}
			
			if ($name == "remoteaccesscode") {
				if (((string)$aVal) == "") {
					$aVal = null;
				} else {
					$aVal = md5($aVal);
				}
			}
			if ($name == "printpass") {
				$aVal = md5($aVal);
			}
			
			$association = $assoc_vals[$name];
			$dbcol = $association["dbcol"];
			$check = $association["checknum"];
			
			if ($check == 1) {
				if (is_numeric($aVal)) {
					$this->changeOneConfigDbItem($pdo,$dbcol,$aVal,"%config%",true);
				} else {
					$problem = true;
				}
			} else {
				$this->changeOneConfigDbItem($pdo,$dbcol,$aVal,"%config%",true);
			}
		}
		if ($problem) {
			echo json_encode("FAILED");
		} else {
			echo json_encode("OK");
		}
	}
	
	function changeOneConfigDbItem($pdo,$theItem,$theValue,$table,$doHist) {		
		// is the value already there, or has it to be created?
		$sql = "SELECT setting from $table WHERE name=?";

		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($theItem));
		$row = $stmt->fetchObject();
		
		if ($stmt->rowCount() > 0) {
			$sql = "UPDATE $table SET setting=? WHERE name=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($theValue,$theItem));
		} else {
			$sql = "INSERT INTO `$table` (`id` , `name`,`setting`) VALUES (NULL , ? , ?)";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($theItem,$theValue));
		}
		
		if ($doHist) {
			// now this has to be logged in the history tables...
			$this->histfiller->updateConfigInHist($pdo,$theItem, $theValue);
		}
	}
	
	private function findActiveUserWithName($username) {
		$sql_find_id = "SELECT id FROM %user% WHERE active='1' AND username='$username'";
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$stmt_query = $pdo->query($this->dbutils->resolveTablenamesInSqlString($sql_find_id));
		$row =$stmt_query->fetchObject();
		$theUserId = $row->id;
		return $theUserId;
	}
	
	function updateUser($theUserId, $isAdmin, $rWaiter, $rKitchen, $rBar, $rSupply, $rPayDesk, $rStat, $rBill, $rProducts, $rReservation, $rRat, $rChangeprice, $rManager) {
		// get the name of the user
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$sql = "SELECT username,is_admin FROM %user% WHERE id=?";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($theUserId));
		$row = $stmt->fetchObject();
		$username = $row->username;
		$userToModIsAdmin = $row->is_admin;
		
		$doChangeAdminRights = false;
		if ($isAdmin != $userToModIsAdmin) {
			$doChangeAdminRights = true;
		}

		if ($doChangeAdminRights && !($this->isCurrentUserAdmin())) {
			echo json_encode("noadmin");
		} else {
			$sql = "UPDATE %user% SET is_admin=?, right_waiter=?,right_kitchen=?,right_bar=?,right_supply=?,right_paydesk=?,right_statistics=?,right_bill=?,right_products=?,right_reservation=?,right_rating=?,right_changeprice=?,right_manager=? WHERE active='1' AND id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($isAdmin,$rWaiter,$rKitchen,$rBar,$rSupply,$rPayDesk,$rStat,$rBill,$rProducts,$rReservation,$rRat,$rChangeprice,$rManager,$theUserId));
				
			// now this has to be logged in the history tables...
			
			$this->histfiller->updateUserInHist($pdo,$theUserId,$username,
					$isAdmin,$rWaiter,$rKitchen,$rBar,$rSupply,$rPayDesk,$rStat,$rBill,$rProducts,$rReservation,$rRat,$rChangeprice,$rManager,'1');
			
			echo json_encode("OK");
		}
	}
	
	function deleteUser($theUserId) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$sql = "SELECT is_admin FROM %user% WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($theUserId));
		$row =$stmt->fetchObject();
		$userToDelIsAdmin = ($row->is_admin == 1 ? true : false);
		
		if ($userToDelIsAdmin && !($this->isCurrentUserAdmin())) {
			echo json_encode("noadmin");
		} else {
			$sql = "SELECT count(id) as countid FROM %user% WHERE active='1' AND is_admin='1' AND id <> ?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($theUserId));
			$row = $stmt->fetchObject();
			$numberOfOtherAdmins = $row->countid;

			if (($numberOfOtherAdmins == 0) && $userToDelIsAdmin) {
				echo json_encode("lastadmin");
			} else {
				$userSql = "UPDATE %user% set active='0' WHERE id=?";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($userSql));
				$stmt->execute(array($theUserId));
				
				$this->histfiller->updateOneUser($pdo,$theUserId);
				
				echo json_encode("OK");
			}
		}
	}
	
	function getCurrentUser() {
		if(session_id() == '') {
			session_start();
		}
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			// no user logged in
			echo json_encode("Nobody");
		} else {
			echo json_encode($_SESSION['currentuser']);
		}
	}
	
	function changepassword($userid,$password) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$sql = "SELECT count(id) as countid, is_admin FROM %user% WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($userid));
		$row = $stmt->fetchObject();
		$userToChgPassIsAdm = false;
		if ($row->countid == 1) {
			if ($row->is_admin == 1) {
				$userToChgPassIsAdm = true;
			}
		}

		if(session_id() == '') {
			session_start();
		}
		$otherUser = false;
		if ($_SESSION['userid'] != $userid) {
			$otherUser = true;
		}
		
		if ($otherUser && $userToChgPassIsAdm && !($this->isCurrentUserAdmin())) {
			echo json_encode("noadmin");
		} else {
			$password_hash = md5($password);
			$userSql = "UPDATE %user% set userpassword=? WHERE active='1' AND id=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($userSql));
			$stmt->execute(array($password_hash,$userid));
			echo json_encode("OK");
		}
	}
	
	function setUserLanguage($language) {
		if(session_id() == '') {
			session_start();
		}
		$currentuserid = $_SESSION['userid'];
		$_SESSION['language'] = intval($language);

		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "UPDATE %user% set language=? WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($language,$currentuserid));
		echo json_encode("OK");
	}
	
	function setUserReceiptPrinter($printer) {
		if(session_id() == '') {
			session_start();
		}
		$currentuserid = $_SESSION['userid'];
		$_SESSION['receiptprinter'] = intval($printer);
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "UPDATE %user% set receiptprinter=? WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($printer,$currentuserid));
		echo json_encode("OK");
	}
	
	function setBtnSize($btn,$size) {
		if(session_id() == '') {
			session_start();
		}
		$currentuserid = $_SESSION['userid'];
		$assoc = array ("0" => "roombtnsize","1" => "tablebtnsize","2" => "prodbtnsize");
		
		$_SESSION[$assoc[$btn]] = intval($size);
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "UPDATE %user% set " . $assoc[$btn] . "=? WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($size,$currentuserid));
		echo json_encode("OK");
	}
	
	function changeOwnPassword($oldpassword,$newpassword) {
		if(session_id() == '') {
			session_start();
		}
		$currentuser = $_SESSION['currentuser'];
		$oldp_hash = md5($oldpassword);

		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$ok = true;
		
		// is old password correct?
		$sql = "SELECT count(id) as countid,userpassword FROM %user% WHERE username=? AND active='1'";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($currentuser));
		$row = $stmt->fetchObject();
		
		$numberOfEntries = $row->countid;
		if ($numberOfEntries == 1) {
			if ($row->userpassword != $oldp_hash) {
				$ok = false;
			}
		} else {
			// user not found
			$ok = false;
		}
		
		if ($ok) {
			// allowed to change password
			$newp_hash = md5($newpassword);
			$sql = "UPDATE %user% set userpassword=? WHERE active='1' AND username=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($newp_hash,$currentuser));
			echo json_encode("OK");
		} else {
			echo json_encode("FAILED");
		}
	}
	
	private function writeCsvHeader($defaultFilename) {
		header("Content-type: text/x-csv");
		header("Content-Disposition: attachment; filename=$defaultFilename");
		header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
		header("Pragma: no-cache");
		header("Expires: 0");
	}
	
	private function exportConfigCsv() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$this->writeCsvHeader("datenexport-config.csv");
		
		echo("Eintragsid; Datum ; Konfiguration; Wert;Beschreibung\n");
		
		$sql = "SELECT DISTINCT %hist%.id as id,date,";
		$sql .= "%config%.name as configitem,%histconfig%.setting as setting,description ";
		$sql .= " FROM %hist%, %histconfig%, %histactions%, %config% ";
		$sql .= " WHERE (refid=%histconfig%.id) ";
		$sql .= " AND %histconfig%.configid = %config%.id ";
		$sql .= " AND (action='2' OR action='6') ";
		$sql .= " AND (action=%histactions%.id) ";
		$sql .= " ORDER BY date,id";
		
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		
		foreach($result as $zeile) {
			$val1 = $zeile['id'];
			$val2 = $zeile['date'];
			$val3 = $zeile['configitem'];
			$val4 = str_replace("\r\n","<CR>",$zeile['setting']);
			$val4 = str_replace("\n","<CR>",$val4);
			$val5 = $zeile['description'];
		
			echo "$val1; $val2; \"$val3\"; \"$val4\"; \"$val5\"\n";
		}
	}
	
	private function exportUserCsv() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$this->writeCsvHeader("datenexport-benutzer.csv");
		
		echo("Eintragsid; Datum ; Benutzerid; Benutzername; Adminrechte; Kellnerrechte;Kuechenrechte; Barrechte; Bereitstellungsrechte; Kassenrechte; Reportrechte; Kassenbonrechte; Angebotsrechte; Beurteilungsrechte; Preisänderungsrechte; Managerrechte; Aktiviert\n");
		
		$sql = "SELECT DISTINCT %hist%.id as id,date,";
		$sql .= "userid,username,is_admin,right_waiter,right_kitchen,right_bar,right_supply,";
		$sql .= "right_paydesk,right_statistics,right_bill,right_products,right_rating,right_changeprice,right_manager,active,";
		$sql .= "description ";
		$sql .= " FROM %hist%, %histuser%, %histactions% ";
		$sql .= " WHERE (refid=%histuser%.id) ";
		$sql .= " AND (action='3' OR action='7' OR action='8') ";
		$sql .= " AND (action=%histactions%.id) ";
		$sql .= " ORDER BY date,id";
		
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		
		foreach($result as $zeile) {
			$val1 = $zeile['id'];
			$val2 = $zeile['date'];
			$val3 = $zeile['userid'];
			$val4 = $zeile['username'];
			$val5 = ($zeile['is_admin'] == '1' ? "Ja" : "Nein");
			$val6 = ($zeile['right_waiter'] == '1' ? "Ja" : "Nein");
			$val7 = ($zeile['right_kitchen'] == '1' ? "Ja" : "Nein");
			$val8 = ($zeile['right_bar'] == '1' ? "Ja" : "Nein");
			$val9 = ($zeile['right_supply'] == '1' ? "Ja" : "Nein");
			$val10 = ($zeile['right_paydesk'] == '1' ? "Ja" : "Nein");
			$val11 = ($zeile['right_statistics'] == '1' ? "Ja" : "Nein");
			$val12 = ($zeile['right_bill'] == '1' ? "Ja" : "Nein");
			$val13 = ($zeile['right_products'] == '1' ? "Ja" : "Nein");
			$val14 = ($zeile['right_rating'] == '1' ? "Ja" : "Nein");
			$val15 = ($zeile['right_changeprice'] == '1' ? "Ja" : "Nein");
			$val16 = ($zeile['right_manager'] == '1' ? "Ja" : "Nein");
			$val17 = ($zeile['active'] == '1' ? "Ja" : "Nein");
			$val18 = $zeile['description'];

			echo "$val1; $val2; $val3; $val4; $val5; $val6; $val7; $val8; $val9; $val10;";
			echo "$val11;$val12;$val13;$val14;$val15;$val16;$val17;$val18\n";
		}
	}
	
	/**
	 * Create a temporary directory in PHP's temp folder
	 */
	private function createDirectoryInTemp($tmpFolder) {
		$tmpFolder = trim($tmpFolder);
		if ($tmpFolder == "") {
			$tempfile=tempnam(sys_get_temp_dir(),'');
		} else {
			$tempfile=tempnam($tmpFolder,'');
		}

		if (is_null($tempfile) || ($tempfile== "")) {
			return null;
		}

		if (file_exists($tempfile)) { unlink($tempfile); }
		mkdir($tempfile);
		if (is_dir($tempfile)) {
			$tempfile = str_replace('\\','/',$tempfile);
			return $tempfile;
		} else {
			return null;
		}
	}
	
	private function getConfigTablesToBackupRestore() {
		return array("logo","work","payment","room","resttables","tablepos","tablemaps","pricelevel","prodtype","products","config","user","comments","histprod","histconfig","histuser","histactions","hist","extras","extrasprods");
	}
	
	private function getAllTablesToBackupRestore() {
		return array("closing","logo","printjobs","ratings","work","payment","room","resttables","tablepos","tablemaps","pricelevel","prodtype","products","config",
				"user","reservations","bill","queue","billproducts","comments","histprod","histconfig","histuser","histactions","hist","extras","extrasprods","queueextras");
	}
	
	public function backup($theType,$remoteaccesscode) {
		date_default_timezone_set(DbUtils::getTimeZone());
		$nowtime = date('Y-m-d');

		ini_set('memory_limit', '1000M');
		$pdo = DButils::openDbAndReturnPdoStatic();
		
		if ($theType == "auto") {
			$sql = "SELECT count(id) as number,setting FROM %config% WHERE name=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array("remoteaccesscode"));
			$row = $stmt->fetchObject();
			if ($row->number == 0) {
				echo "No remote access code available - backup not allowed";
				return;
			}
			$code = $row->setting;
			if (is_null($code) || (trim($code) == "")) {
				echo "No remote access code set - backup not allowed";
				return;
			}
			if ($code != md5($remoteaccesscode)) {
				echo "Wrong remote access code used - backup not allowed";
				return;
			}
		}
		
		$pdo->beginTransaction();
		
		$genInfo = $this->getGeneralConfigItems(false, $pdo);
		$version = $genInfo["version"];
		$fileName = "backup-" . $version . "_" . $nowtime . "-configuration.json";
		if ($theType == "all") {
			$fileName = "backup-" . $version . "_" . $nowtime . "-all.json";
		}
		
		if ($theType == "configuration") {
			$tables = $this->getConfigTablesToBackupRestore();
		} else {
			$histFiller = new HistFiller();
			$histFiller->insertSaveHistEntry($pdo);
			$tables = $this->getAllTablesToBackupRestore();
		}

		$binaryFields = array("signature","img","setting","content");
		$dbcontent = array();
		foreach($tables as $table) {
			$sql = "DESCRIBE %$table%";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute();
			$fields = $stmt->fetchAll(PDO::FETCH_COLUMN);

			
			$fieldstr = implode(",",$fields);
			$sql = "SELECT $fieldstr from %$table%";
			
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));	
			$stmt->execute();
			$result = $stmt->fetchAll();

			$tableContent = array();
			foreach($result as $row) {
				$fieldContent = array();
				foreach($fields as $field) {
					if (in_array($field,$binaryFields)) {
						$aFieldEntry = array("fieldname" => $field,"value" => base64_encode($row[$field]));
					} else {
						$aFieldEntry = array("fieldname" => $field,"value" => $row[$field]);
					}
					$fieldContent[] = $aFieldEntry;
				};
				$tableContent[] = $fieldContent;
			}
			
			$dbcontent[] = array("table" => $table, "content" => $tableContent);
		}

		$pdo->commit();
		
		$retStr = json_encode($dbcontent);

		ob_start();
		header("Pragma: public");
		header("Expires: 0");
		header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
		header("Cache-Control: public");
		header("Content-Description: File Transfer");
		header("Content-type: application/octet-stream");
		header("Content-Disposition: attachment; filename=\"$fileName\"");
		header("Content-Transfer-Encoding: binary");
		header("Content-Length: ". strlen($retStr));

		echo $retStr;
		ob_end_flush();
	}
	
	private function restore() {
		ini_set('memory_limit', '1000M');
		set_time_limit(60*5);
		
		if ($_FILES['userfile']['error'] != UPLOAD_ERR_OK               //checks for errors
				&& is_uploaded_file($_FILES['userfile']['tmp_name'])) { //checks that file is uploaded
			header("Location: ../infopage.html?e=manager.html=Kann_Datei_nicht_laden.");
			exit();
		}
		
		if(!file_exists($_FILES['userfile']['tmp_name'])) {
			header("Location: ../infopage.html?e=manager.html=Datei_existiert_nicht._Bitte_PHP-Variable_upload_max_filesize_checken.");
			exit();
		}
		
		if(!is_uploaded_file($_FILES['userfile']['tmp_name'])) {
			header("Location: ../infopage.html?e=manager.html=Datei_konnte_nicht_hochgeladen_werden.");
			exit();
		}

		$binaryFields = array("signature","img","setting","content");
		
		$content = file_get_contents($_FILES['userfile']['tmp_name']);
		
		$basedb = new Basedb();
		$basedb->setPrefix(TAB_PREFIX);
		$basedb->setTimeZone(DbUtils::getTimeZone());
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$pdo->beginTransaction();
		
		$genInfo = $this->getGeneralConfigItems(false, $pdo);
		$version = $genInfo["version"];
		
		$timezone = DbUtils::getTimeZone();
		
		$basedb->dropTables($pdo);
		
		$basedb->createEmptyTables($pdo);
		
		$dbContent = json_decode($content,true);
		
		$typeIsOnlyConfig = true;
		
		foreach($dbContent as $table) {
			$tablename = "%" . $table['table'] . "%";
			$tablecontent = $table['content'];

			if ($table['table'] == "queue") {
				$typeIsOnlyConfig = false;
			}
			
			if ($table['table'] == "bill") {
				$sql = "SET FOREIGN_KEY_CHECKS = 0";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
				$stmt->execute();
			}
			
			foreach($tablecontent as $row) {
				$cols = array();
				$vals = array();
				$quests = array();
				foreach ($row as $field) {
					$fieldname = $field['fieldname'];
					$cols[] = $fieldname;
					if (in_array($fieldname, $binaryFields)) {
						$vals[] = base64_decode($field['value']);
					} else {
						$vals[] = $field['value'];
					}					
					
					$quests[] = '?';
				}
				$colstr = implode(",",$cols);
				
				$queststr = implode(",",$quests);
				$sql = "INSERT INTO $tablename ($colstr) VALUES ($queststr)";
				$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));

				$stmt->execute($vals);
			}
			
			if ($table['table'] == "bill") {
				$sql = "SET FOREIGN_KEY_CHECKS = 1";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
				$stmt->execute();
			}
		}
		
		if (!$typeIsOnlyConfig) {
			$histFiller = new HistFiller();
			$histFiller->insertRestoreHistEntry($pdo);
		}

		$basedb->signLastBillid($pdo);
		
		$setVersion = "update %config% set setting=? where name='version'";
		$stmt = $pdo->prepare($basedb->resolveTablenamesInSqlString($setVersion));
		$stmt->execute(array($version));

		$sql = "SELECT name FROM %config% WHERE name=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array("timezone"));
		$row = $stmt->fetchObject();
		if ($stmt->rowCount() == 0) {
			$this->changeOneConfigDbItem($pdo, "timezone", $timezone, "%config%", true);
		}
		$pdo->commit();

		// logout (by the restore other user or rights may have been applied)
		if(session_id() == '') {
			session_start();
		}
		$_SESSION = array();
		// Swipe via memory
		if (ini_get("session.use_cookies")) {
			// Prepare and swipe cookies
			$params = session_get_cookie_params();
			// clear cookies and sessions
			setcookie(session_name(), '', time() - 42000,
			$params["path"], $params["domain"],
			$params["secure"], $params["httponly"]
			);
		}
		
		ini_set('session.gc_max_lifetime', 0);
		ini_set('session.gc_probability', 1);
		ini_set('session.gc_divisor', 1);

		session_destroy();

		header("Location: ../infopage.html?i=index.html=Import_war_erfolgreich."); /* Browser umleiten */
		exit;
	}
	
	private function shutdown() {
		try {
			if (substr(php_uname(), 0, 7) == "Windows"){
				$comd = "shutdown /s /t 10";
				pclose(popen("start /B ". $cmd, "r"));
			}
			else {
				chmod("shutdown.bat", "700");
				$cmd = "sh < shutdown.bat";
				exec($cmd . " > /dev/null &");
			}
			echo json_encode(array("status" => "OK"));
		} catch(Exception $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_SCRIPT_NOT_EXECUTABLE, "msg" => ERROR_SCRIPT_NOT_EXECUTABLE_MSG));
		}
		
	}
}

?>