$urlParts = parse_url($_SERVER['REQUEST_URI']);
$rawQuery = $urlParts['query'];
if (isset($rawQuery)) {
if ($rawQuery[WebClientPrint::CLIENT_PRINT_JOB]) {
parse_str($rawQuery, $qs);
$useDefaultPrinter = $qs['useDefaultPrinter'] === 'checked';
$printerName = urldecode($qs['printerName']);
$pr = new Printer();
$students = $pr->get_print_job();
$students_arr = explode(",", $students);
if (count($students_arr) > 0) {
foreach ($students_arr as $studentid) {
$cert_path = $_SERVER['DOCUMENT_ROOT'] . "/lms/custom/certificates/{$studentid}/certificate.jpg";
$fileName = uniqid() . '.' . $cert_path;
$filePath = $cert_path;
if (!Utils::isNullOrEmptyString($filePath)) {
//Create a ClientPrintJob obj that will be processed at the client side by the WCPP
$cpj = new ClientPrintJob();
$cpj->printFile = new PrintFile($filePath, $fileName, null);
if ($useDefaultPrinter || $printerName === 'null') {
$cpj->clientPrinter = new DefaultPrinter();
} else {
$cpj->clientPrinter = new InstalledPrinter($printerName);
}
// end else
//Send ClientPrintJob back to the client
ob_clean();
echo $cpj->sendToClient();
}
// end if !Utils::isNullOrEmptyString($filePath)
}
/**
* Sends this ClientPrintJob object to the client for further processing.
* The ClientPrintJob object will be processed by the WCPP installed at the client machine.
* @return string A string representing a ClientPrintJob object.
*/
public function sendToClient()
{
header('Content-type: application/octet-stream');
$cpjHeader = chr(99) . chr(112) . chr(106) . chr(2);
$buffer = '';
if (!Utils::isNullOrEmptyString($this->printerCommands)) {
if ($this->formatHexValues) {
$buffer = Utils::formatHexValues($this->printerCommands);
} else {
$buffer = $this->printerCommands;
}
} else {
if (isset($this->printFile)) {
$buffer = $this->printFile->serialize();
} else {
if (isset($this->printFileGroup)) {
$buffer = 'wcpPFG:';
$zip = new ZipArchive();
$cacheFileName = (Utils::strEndsWith(WebClientPrint::$wcpCacheFolder, '/') ? WebClientPrint::$wcpCacheFolder : WebClientPrint::$wcpCacheFolder . '/') . 'PFG' . uniqid() . '.zip';
$res = $zip->open($cacheFileName, ZipArchive::CREATE);
if ($res === TRUE) {
foreach ($this->printFileGroup as $printFile) {
$zip->addFromString($printFile->fileName, $printFile->getFileContent());
}
$zip->close();
$handle = fopen($cacheFileName, 'rb');
$buffer .= fread($handle, filesize($cacheFileName));
fclose($handle);
unlink($cacheFileName);
} else {
$buffer = 'Creating PrintFileGroup failed. Cannot create zip file.';
}
}
}
}
$arrIdx1 = Utils::intToArray(strlen($buffer));
if (!isset($this->clientPrinter)) {
$this->clientPrinter = new UserSelectedPrinter();
}
$buffer .= $this->clientPrinter->serialize();
$arrIdx2 = Utils::intToArray(strlen($buffer));
$lo = '';
if (Utils::isNullOrEmptyString(WebClientPrint::$licenseOwner)) {
$lo = substr(uniqid(), 0, 8);
} else {
$lo = WebClientPrint::$licenseOwner;
}
$lk = '';
if (Utils::isNullOrEmptyString(WebClientPrint::$licenseKey)) {
$lk = substr(uniqid(), 0, 8);
} else {
$lk = WebClientPrint::$licenseKey;
}
$buffer .= $lo . chr(124) . $lk;
return $cpjHeader . $arrIdx1 . $arrIdx2 . $buffer;
}