161 lines
5.1 KiB
PHP
161 lines
5.1 KiB
PHP
<?php
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// Datenbank-Verbindungsparameter
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require_once ('config.php');
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require_once ('globals.php');
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require_once ('dbutils.php');
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class PrintQueue {
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var $dbutils;
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var $userrights;
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function __construct() {
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$this->dbutils = new DbUtils();
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$this->userrights = new Userrights();
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}
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function handleCommand($command) {
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// these command are only allowed for user with waiter rights
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if ($command == 'queuePrintJob') {
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$this->queuePrintJob($_POST['content'],$_POST['type']);
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} else if ($command == 'getNextPrintJob') {
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$this->getNextPrintJob($_POST['pass']);
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} else if ($command == 'deletePrintJob') {
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$this->deletePrintJob($_POST['pass'],$_POST['id']);
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} else if ($command == 'getPrintJobAsHtml') {
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$this->getPrintJobAsHtml($_GET['id'],$_POST['pass']);
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} else if ($command == 'getNextPrintJobIdType') {
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$this->getNextPrintJobIdType($_POST['pass']);
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} else {
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echo "Kommando nicht erkannt!";
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}
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}
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/*
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* Insert a job into ther printjob queue. The POS Print Server will
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* pick these jobs and delete them after successful printing
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*/
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function queuePrintJob($htmlContent,$printType) {
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if (($printType == FOOD_PRINT_TYPE) || ($printType == DRINK_PRINT_TYPE)){
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// waiter rights required
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if (!($this->userrights->hasCurrentUserRight('right_waiter'))) {
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echo "Benutzerrechte nicht ausreichend!";
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return false;
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}
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}
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if ($printType == PAY_PRINT_TYPE){
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// waiter, or manager, bill, admin rights required
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if (!($this->userrights->hasCurrentUserRight('right_paydesk')) &&
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!($this->userrights->hasCurrentUserRight('right_manager')) &&
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!($this->userrights->hasCurrentUserRight('right_bill')) &&
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!($this->userrights->hasCurrentUserRight('right_waiter')) &&
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!($this->userrights->hasCurrentUserRight('is_admin'))
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) {
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echo "Benutzerrechte nicht ausreichend!";
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return false;
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}
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}
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// from here on user is authorized
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$printInsertSql = "INSERT INTO `%printjobs%` (`id` , `content`,`type`) VALUES ( NULL, '$htmlContent' , '$printType')";
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$dbresult = $this->dbutils->performSqlCommand($printInsertSql);
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echo json_encode("OK");
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}
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function isPasswordCorrect($pass) {
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$sql = "SELECT setting FROM %config% WHERE name=?";
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$pdo = $this->dbutils->openDbAndReturnPdo();
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$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
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$stmt->execute(array("printpass"));
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$row =$stmt->fetchObject();
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if ($row != null) {
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$passInDb = $row->setting;
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if ($passInDb != null) {
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// plain comparison
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if ($pass == $passInDb) {
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return true;
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} else {
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echo "Error: Falscher Printpass!";
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}
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} else {
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echo "Error: kein Printpass in DB gesetzt!";
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}
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}
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echo "Error: DB konnte nicht abgefragt werden!";
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return false;
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}
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function getNextPrintJob($pass) {
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$isCorrect = $this->isPasswordCorrect($pass);
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if ($isCorrect) {
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$sql = "SELECT id,content,type FROM %printjobs% ORDER BY id ASC LIMIT 1";
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$pdo = $this->dbutils->openDbAndReturnPdo();
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$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
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$stmt->execute();
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$row =$stmt->fetchObject();
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if ($row != null) {
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echo json_encode(array("id" => $row->id, "content" => $row->content, "type" => $row->type));
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}
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}
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}
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function getNextPrintJobIdType($md5pass) {
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$isCorrect = $this->isPasswordCorrect($md5pass);
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if ($isCorrect) {
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$sql = "SELECT id,type FROM %printjobs% ORDER BY id ASC LIMIT 1";
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$pdo = $this->dbutils->openDbAndReturnPdo();
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$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
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$stmt->execute();
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$row =$stmt->fetchObject();
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if ($row != null) {
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$id = $row->id;
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$theType = $row->type;
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if ($id != null) {
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header( "Expires: Mon, 20 Dec 1998 01:00:00 GMT" );
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header( "Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT" );
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header( "Cache-Control: no-cache, must-revalidate" );
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header( "Pragma: no-cache" );
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header( "Content-Type: text/html; charset=utf8" );
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echo "<html><body>" . $id . "-" . $theType . "</body></html>";
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}
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}
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}
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}
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function getPrintJobAsHtml($id,$md5pass) {
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$isCorrect = $this->isPasswordCorrect($md5pass);
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if ($isCorrect) {
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$sql = "SELECT content FROM %printjobs% WHERE id=?";
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$pdo = $this->dbutils->openDbAndReturnPdo();
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$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
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$stmt->execute(array($id));
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$row =$stmt->fetchObject();
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if ($row != null) {
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$content = $row->content;
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if ($content != null)
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{
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header( "Expires: Mon, 20 Dec 1998 01:00:00 GMT" );
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header( "Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT" );
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header( "Cache-Control: no-cache, must-revalidate" );
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header( "Pragma: no-cache" );
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header( "Content-Type: text/html; charset=utf8" );
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echo "<html><body>" . $content . "</body></html>";
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}
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}
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}
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}
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function deletePrintJob($pass,$id) {
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$isCorrect = $this->isPasswordCorrect($pass);
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if ($isCorrect) {
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$sql = "DELETE FROM %printjobs% WHERE id=?";
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$pdo = $this->dbutils->openDbAndReturnPdo();
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$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
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$stmt->execute(array($id));
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}
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}
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}
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?>
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