| var printer_helper = {} , fs = require("fs") , child_process = require("child_process") , os = require("os") , path = require("path");if(process.platform=="win32"){ printer_helper = require('../build/Release/node_printer.node');}module.exports.printDirect = printDirect/*print raw data. This function is intend to be asynchronousparameters: parameters - Object, parameters objects with the following structure: data - String, mandatory, data to printer printer - String, mandatory, mane of the printer docname - String, optional, name of document showed in printer status type - String, optional, only for wind32, data type, one of the RAW, TEXT success - Function, optional, callback function error - Function, optional, callback function if exists any error or data - String, mandatory, data to printer printer - String, mandatory, mane of the printer docname - String, optional, name of document showed in printer status type - String, optional, data type, one of the RAW, TEXT success - Function, optional, callback function error - Function, optional, callback function if exists any error*/function printDirect(parameters){ var data = parameters , printer , docname , type , success , error; if(arguments.length==1){ //TODO: check parameters type //if (typeof parameters ) data = parameters.data; printer = parameters.printer; docname = parameters.docname; type = parameters.type; success = parameters.success; error = parameters.error; }else{ printer = arguments[1]; type = arguments[2]; docname = arguments[3]; success = arguments[4]; error = arguments[5]; } if(!success){ success = function(){}; } if(!error){ error = function(err){ throw err; }; } if(!type){ type = "RAW"; } if(!docname){ docname = "node print job"; } //TODO: check parameters type if(process.platform=="win32"){// call C++ binding if(!printer_helper.printDirect){ error("Not supported, try to compile this package with MSC"); return; } try{ var res = printer_helper.printDirect(data, printer, docname, type, success, error); if(res===true){ success(); }else{ error(Error("Something wrong")); } }catch (e){ error(e); } }else if (!printer_helper.printDirect){// should be POSIX var temp_file_name = path.join(os.tmpDir(),"printing"); fs.writeFileSync(temp_file_name, data); // BUG: CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection') // child_process.exec('lpr -P'+printer+' -oraw -r'+' '+temp_file_name, function(err, stdout, stderr){ // FIXED: child_process.execFile('lpr', ['-P' + printer, '-oraw', '-r', temp_file_name], function(err, stdout, stderr){ if (err !== null) { error('ERROR: ' + err); return; } if (stderr) { error('STD ERROR: ' + stderr); return; } success(); }); }else{ error("Not supported"); }} |