azechi’s gists

azechi / Decrypt_AuthenticationTicket.csproj

Last active October 3, 2018 19:47

.Net Core Decrypting Legacy FormsAuthenticationTicket (mode=Framework20SP2, SHA1, AES)

	<Project Sdk="Microsoft.NET.Sdk">

	<PropertyGroup>
	<OutputType>Exe</OutputType>
	<TargetFramework>netcoreapp1.1</TargetFramework>
	<RootNamespace>App</RootNamespace>
	</PropertyGroup>

	<ItemGroup>
	<PackageReference Include="System.Text.Encoding.CodePages" Version="4.3.0" />

azechi / Clip_URLShortcut.bat

Created January 19, 2018 08:37

WindowsのSendToでWebページのショトートカットファイルを"[title url]"の文字にしてクリップボードに保存する

	@fsi --exec %HOME%\bin\Clip_URLShortcut.fsx %* \| clip
	@pause

azechi / LINQ_Method_QueryExp.csx

Last active June 22, 2018 03:17

Programming in Scala S23.2 The n-queens problem

	Func<(int, int), (int, int), bool> inCheck = (q1, q2) => q1.Item1 == q2.Item1 \|\| q1.Item2 == q2.Item2 \|\| Math.Abs(q1.Item1 - q2.Item1) == Math.Abs(q1.Item2 - q2.Item2);

	Func<(int, int), IEnumerable<(int, int)>, bool> isSafe = (queen, queens) => queens.All(q => !inCheck(queen, q));

	Func<int, IEnumerable<IEnumerable<(int, int)>>> queens = n => {
	Func<int, IEnumerable<IEnumerable<(int, int)>>> placeQueens = null;
	placeQueens = k => {
	if (k == 0){
	return Enumerable.Repeat(Enumerable.Empty<(int, int)>(), 1);
	} else {

azechi / RandomBase32String.js

Last active July 3, 2023 17:14

Generate a random base32 string(length:6) using Web Crypto API

	const base = "abcdefghijklmnopqrstuvwxyz234567" //a-z, 2-7

	const array = new Int32Array(1)
	window.crypto.getRandomValues(array)
	const i = array[0]

	var result =
	base[i >>> 27 & 0x1f] +
	base[i >>> 22 & 0x1f] +
	base[i >>> 17 & 0x1f] +

azechi / 0_read_QR_Code_from_webcam.html

Last active April 4, 2019 03:41

Read QR Code from video with web browser using cozmo/jsQR

azechi / GetIPAddress.js

Last active April 24, 2019 01:38

Find out IP Address on the public side of a NAT using public stun server

	function getIPAddress() {

	const S = "stun.l.google.com:19302";

	return new Promise(resolve=>{

	const pc = new RTCPeerConnection({
	"iceServers": [{
	"urls": ["stun:" + S]
	}]

azechi / win32api_WindowRect.ipynb

Created December 3, 2019 00:47

windows api, QueryFullProcessImageName, DwmGetWindowAttribute,

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azechi / Dockerfile

Created April 10, 2020 13:40

docker discordrb

	FROM ruby AS builder
	COPY Gemfile Gemfile.lock ./
	RUN env DEBCONF_NOWARNINGS=yes bundle install -j "$(getconf _NPROCESSORS_ONLN)" --retry 3 \
	&& rm -rf /usr/local/bundle/cache/*.gem \
	&& find /usr/local/bundle/gems/ -name '*.c' -delete \
	&& find /usr/local/bundle/gems/ -name '*.o' -delete

	# app
	FROM ruby:slim
	RUN apt-get update \

azechi / pkce.js

Created September 26, 2020 05:16

JavaScript RFC7636 PKCE code_verifier and SHA-256 code_challenge with Web Cryptography API

	//https://tools.ietf.org/html/rfc7636#appendix-B

	const code_verifier = btoa(
	String.fromCharCode(...crypto.getRandomValues(new Uint8Array(32)))
	).replace(/\/\|\+\|=/g, (x) => ({ "/": "_", "+": "-", "=": "" }[x]));

	const hash = await crypto.subtle.digest(
	"SHA-256",
	new Uint8Array([...code_verifier].map((e) => e.charCodeAt(0)))
	);

azechi / client.js

Created January 24, 2021 01:48

discord.js, voice channel, streaming, raw PCM, child process

	const BOT_TOKEN = process.env.DISCORD_BOT_TOKEN;
	const CHANNEL_ID = process.env.VOICE_CHANNEL_ID;

	const { spawn } = require('child_process');
	const Discord = require('discord.js');
	const prism = require('prism-media');

	const client = new Discord.Client();

	client.on('ready', async () => {