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'use strict';
// @ts-check
// ==================================================================================
// printers.js
// ----------------------------------------------------------------------------------
// Description: System Information - library
// for Node.js
// Copyright: (c) 2014 - 2022
// Author: Sebastian Hildebrandt
// ----------------------------------------------------------------------------------
// License: MIT
// ==================================================================================
// 15. printers
// ----------------------------------------------------------------------------------
const exec = require('child_process').exec;
// const execSync = require('child_process').execSync;
const util = require('./util');
// const fs = require('fs');
let _platform = process.platform;
const _linux = (_platform === 'linux' || _platform === 'android');
const _darwin = (_platform === 'darwin');
const _windows = (_platform === 'win32');
const _freebsd = (_platform === 'freebsd');
const _openbsd = (_platform === 'openbsd');
const _netbsd = (_platform === 'netbsd');
const _sunos = (_platform === 'sunos');
const winPrinterStatus = {
1: 'Other',
2: 'Unknown',
3: 'Idle',
4: 'Printing',
5: 'Warmup',
6: 'Stopped Printing',
7: 'Offline',
};
function parseLinuxCupsHeader(lines) {
const result = {};
if (lines && lines.length) {
if (lines[0].indexOf(' CUPS v') > 0) {
const parts = lines[0].split(' CUPS v');
result.cupsVersion = parts[1];
}
}
return result;
}
function parseLinuxCupsPrinter(lines) {
const result = {};
const printerId = util.getValue(lines, 'PrinterId', ' ');
result.id = printerId ? parseInt(printerId, 10) : null;
result.name = util.getValue(lines, 'Info', ' ');
result.model = lines.length > 0 && lines[0] ? lines[0].split(' ')[0] : '';
result.uri = util.getValue(lines, 'DeviceURI', ' ');
result.uuid = util.getValue(lines, 'UUID', ' ');
result.status = util.getValue(lines, 'State', ' ');
result.local = util.getValue(lines, 'Location', ' ').toLowerCase().startsWith('local');
result.default = null;
result.shared = util.getValue(lines, 'Shared', ' ').toLowerCase().startsWith('yes');
return result;
}
function parseLinuxLpstatPrinter(lines, id) {
const result = {};
result.id = id;
result.name = util.getValue(lines, 'Description', ':', true);
result.model = lines.length > 0 && lines[0] ? lines[0].split(' ')[0] : '';
result.uri = null;
result.uuid = null;
result.status = lines.length > 0 && lines[0] ? (lines[0].indexOf(' idle') > 0 ? 'idle' : (lines[0].indexOf(' printing') > 0 ? 'printing' : 'unknown')) : null;
result.local = util.getValue(lines, 'Location', ':', true).toLowerCase().startsWith('local');
result.default = null;
result.shared = util.getValue(lines, 'Shared', ' ').toLowerCase().startsWith('yes');
return result;
}
function parseDarwinPrinters(printerObject, id) {
const result = {};
const uriParts = printerObject.uri.split('/');
result.id = id;
result.name = printerObject._name;
result.model = uriParts.length ? uriParts[uriParts.length - 1] : '';
result.uri = printerObject.uri;
result.uuid = null;
result.status = printerObject.status;
result.local = printerObject.printserver === 'local';
result.default = printerObject.default === 'yes';
result.shared = printerObject.shared === 'yes';
return result;
}
function parseWindowsPrinters(lines, id) {
const result = {};
const status = parseInt(util.getValue(lines, 'PrinterStatus', ':'), 10);
result.id = id;
result.name = util.getValue(lines, 'name', ':');
result.model = util.getValue(lines, 'DriverName', ':');
result.uri = null;
result.uuid = null;
result.status = winPrinterStatus[status] ? winPrinterStatus[status] : null;
result.local = util.getValue(lines, 'Local', ':').toUpperCase() === 'TRUE';
result.default = util.getValue(lines, 'Default', ':').toUpperCase() === 'TRUE';
result.shared = util.getValue(lines, 'Shared', ':').toUpperCase() === 'TRUE';
return result;
}
function printer(callback) {
return new Promise((resolve) => {
process.nextTick(() => {
let result = [];
if (_linux || _freebsd || _openbsd || _netbsd) {
let cmd = 'cat /etc/cups/printers.conf 2>/dev/null';
exec(cmd, function (error, stdout) {
// printers.conf
if (!error) {
const parts = stdout.toString().split('<Printer ');
const printerHeader = parseLinuxCupsHeader(parts[0]);
for (let i = 1; i < parts.length; i++) {
const printers = parseLinuxCupsPrinter(parts[i].split('\n'));
if (printers.name) {
printers.engine = 'CUPS';
printers.engineVersion = printerHeader.cupsVersion;
result.push(printers);
}
}
}
if (result.length === 0) {
if (_linux) {
cmd = 'export LC_ALL=C; lpstat -lp 2>/dev/null; unset LC_ALL';
// lpstat
exec(cmd, function (error, stdout) {
const parts = ('\n' + stdout.toString()).split('\nprinter ');
for (let i = 1; i < parts.length; i++) {
const printers = parseLinuxLpstatPrinter(parts[i].split('\n'), i);
result.push(printers);
}
});
if (callback) {
callback(result);
}
resolve(result);
} else {
if (callback) {
callback(result);
}
resolve(result);
}
} else {
if (callback) {
callback(result);
}
resolve(result);
}
});
}
if (_darwin) {
let cmd = 'system_profiler SPPrintersDataType -json';
exec(cmd, function (error, stdout) {
if (!error) {
try {
const outObj = JSON.parse(stdout.toString());
if (outObj.SPPrintersDataType && outObj.SPPrintersDataType.length) {
for (let i = 0; i < outObj.SPPrintersDataType.length; i++) {
const printer = parseDarwinPrinters(outObj.SPPrintersDataType[i], i);
result.push(printer);
}
}
} catch (e) {
util.noop();
}
}
if (callback) {
callback(result);
}
resolve(result);
});
}
if (_windows) {
util.powerShell('Get-WmiObject Win32_Printer | select PrinterStatus,Name,DriverName,Local,Default,Shared | fl').then((stdout, error) => {
if (!error) {
const parts = stdout.toString().split(/\n\s*\n/);
for (let i = 0; i < parts.length; i++) {
const printer = parseWindowsPrinters(parts[i].split('\n'), i);
if (printer.name || printer.model) {
result.push(parseWindowsPrinters(parts[i].split('\n'), i));
}
}
}
if (callback) {
callback(result);
}
resolve(result);
});
}
if (_sunos) {
resolve(null);
}
});
});
}
exports.printer = printer;
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