piksel

using ICSharpCode.SharpZipLib.BZip2;
using System;
using System.Diagnostics;
using System.IO;

namespace Issue413
{
	class Program
	{
		static void Main(string[] args)

piksel

public class KeySeeder
{
    const int KeySize = 8;

    private Random random;
    private int currIndex = 0;
    private char[] keyBuffer = new char[KeySize];

    private char[] keyChars = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-_".ToCharArray();

piksel

import PropTypes from 'prop-types';


export function interfacePropType<T>(): PropTypes.Requireable<T> {
    const validator = function(props: { [key: string]: any }, propName: string, componentName: string, location: string, propFullName: string)
    {
        return null;
    }

    validator.isRequired= function(props: {[key: string]: any}, propName: string, componentName: string){return null}

piksel

Controlling the Brother P-Touch Cube label maker from a computer

The Brother PTP300BT label maker is intended to be controlled using the official Brother P-Touch Design & Print iOS/Android app. The app has arbitrary limits on what you can print (1 text object and up to 3 preset icons), so I thought it would be a fun challenge to reverse engineer the protocol to print whatever I wanted.

Python code at the bottom if you want to skip the fine details.

Process

Intitially I had a quick peek at the Android APK to see if there was any useful information inside. The code that handles the communication with the printer in Print&Design turned out to be a native library, but the app clearly prepares a bitmap image and passes it to this native library for printing. Bitmaps are definitely something we can work with.

piksel

using System;

namespace Piksel.TryAttemptExample
{
    using static Piksel.Helpers.StaticFunctions;
    
    static class Program
    {
        static int Main(string[] args)
        {

piksel

using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;

namespace npoi_test
{
    class Program

piksel

NuGet packages depending on SharpZipLib:

• Lucene.Net v3.0.3 => 0.86.0
• ExcelDataReader v3.4.0 => [0.86.0, )
• NPOI v2.3.0 => [0.86.0, )
• Lucene.Net.Store.Azure v3.0.5553.21100 => 0.86.0
• Cake.Compression v0.2.1 => [1.0.0-rc1, )
• N2CMS.Management v2.9.6.19 => [0.86.0, )
• Ewl v59.0.0 => [0.86.0, )
• PMoney.Inventory v1.3.20 => [0.86.0, 1.0.0)
• Accord.IO v3.8.0 => [0.86.0, )

piksel

nils @ piksel-nox ~
✔ ➡ curl -s https://pub.p1k.se/public.key | sudo apt-key add -
OK

nils @ piksel-nox ~
✔ ➡ sudo add-apt-repository https://pub.p1k.se/ubuntu

nils @ piksel-nox ~
✔ ➡ sudo apt install i-nex
...

piksel

using System;
using ICSharpCode.SharpZipLib.Zip;

namespace JarZipTest
{
    class Program
    {
        static void Main(string[] args)
        {
            var outDir = "out";

piksel

using System;
using System.IO;
using ICSharpCode.SharpZipLib.Zip;

namespace chinese_test
{
    class Program
    {
        static void Main(string[] args)
        {