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Fuzzing CDT: Finding, reproducing, and reporting bugs

Introduction

This is a tutorial on how to write a fuzzer for a non-trivial real-world library, namely Artem Amirkhanov's CDT. It is a library for computing Constrained Delaunay Triangulations (CDTs, hence the name of the library). We will be working from the 9d99b32ae56b26cd2781678dc4405c98b8679a9f commit, since that is what I originally wrote the fuzzer for, and that way, we will be able to rediscover the same bugs I found back then.

If you want to follow along, clone the library using

$ git clone https://github.com/artem-ogre/CDT
$ cd CDT

Updating arrays of elements with function refs in Vue 3

I did a screencast series recently talking about my favorite Vue 3 feature: function refs. Check out the screencast series for more context-in this gist, I'm going to answer a fantastic question I got in one of the videos' comment section.

This question was about how to properly update arrays of elements that are captured by function refs. Let's check out the basic principle first, before we look at the details of the question.

<script setup>
import { ref, onBeforeUpdate } from 'vue'

Update: use PowerShell script PythonEmbed4Win.ps1.

The instructions in this gist have some subtle problems and this gist will not be updated.

About

Регулярное выражение для мобильных и городских номеров России и СНГ

Страны:

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Basic Snake HTML and JavaScript Game

Snake is a fun game to make as it doesn't require a lot of code (less than 100 lines with all comments removed). This is a basic implementation of the snake game, but it's missing a few things intentionally and they're left as further exploration for the reader.

Further Exploration

Score
When the snake eats an apple, the score should increase by one. Use context.fillText() to display the score to the screen

	#!/usr/bin/env python
	# Boofuzz is a fork of and the successor to the venerable Sulley fuzzing framework.
	# Besides numerous bug fixes, boofuzz aims for extensibility. The goal: fuzz everything.

	# Github: https://github.com/jtpereyda/boofuzz
	# Docs: http://boofuzz.readthedocs.io/en/latest/
	# PDF: https://buildmedia.readthedocs.org/media/pdf/boofuzz/latest/boofuzz.pdf
	#
	# This project uses virtualenv to manage all dependencies. To properly install this project, run the following commands:
	#

	import requests
	import csv

	response_data = requests.get('https://api.protonmail.ch/vpn/logicals')

	response_json = response_data.json()

	ip_list = []

	for server in response_json['LogicalServers']:

	const regex = /url\((.?)\) format\((\'\|\")(.?)(\'\|\")\)/g;
	const str = `CSS Input`;
	let m;

	while ((m = regex.exec(str)) !== null) {
	// This is necessary to avoid infinite loops with zero-width matches
	if (m.index === regex.lastIndex) {
	regex.lastIndex++;
	}

	""" This script implements a class for calculating the Earth terminator.
	Additional functionality for calculating the boundary of the various
	twilight types and plotting these areas on a 2D map are also provided.
	--------------------------------------------------------------------------
	Copyright (C) 2023 Jonathan Maes

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published
	by the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	os.system("kotlinc src/main/kotlin/Launcher.kt -include-runtime -d launcher.jar")

	process = Popen(['java', '-jar', 'launcher.jar', tmp_file_name], stdout=PIPE)
	(stdout, stderr) = process.communicate()