coekie

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashSet;
import java.util.Set;

// billion-laughs-style DoS for java serialization
public class SerialDOS {

FiloSottile

#! /bin/bash
set -euo pipefail

# This script will remove automatic association for all networks not listed in the whitelist
# passed as the first argument. Passwords will NOT be removed from the Keychain.
#
# Alternatively, you can untick "Remember networks" in Network Preferences > Wi-Fi > Advanced,
# but then you won't be able to auto-join networks even temporarily, and you might already
# have a long list to go through.
#

umidjons

Download Audio from YouTube

-i - ignore errors

-c - continue

-t - use video title as file name

--extract-audio - extract audio track

marwei

Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

1. List the topics to which the group is subscribed

kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe

Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

2. Reset the consumer offset for a topic (preview)

sebmarkbage

let cache = new Map();
let pending = new Map();

function fetchTextSync(url) {
  if (cache.has(url)) {
    return cache.get(url);
  }
  if (pending.has(url)) {
    throw pending.get(url);
  }

jarun

prerequisites

• Compile the program in gcc with debug symbols enabled (-g)
• Do NOT strip the binary
• To generate assembly code using gcc use the -S option: gcc -S hello.c

utilities

objdump

marcoarment

<?php
function base64url_encode($binary_data) { return strtr(rtrim(base64_encode($binary_data), '='), '+/', '-_'); }

function apns_jwt_token($team_id, $key_id, $private_key_pem_str)
{
    if (! function_exists('openssl_get_md_methods') || ! in_array('sha256', openssl_get_md_methods())) throw new Exception('Requires openssl with sha256 support');

    $private_key = openssl_pkey_get_private($private_key_pem_str);
    if (! $private_key) throw new Exception('Cannot decode private key');

ourownstory

Encrypted dual boot setup with Pop!_OS and Windows 10

How to guide, using LUKS and Bitlocker on Dell XPS 17 9700

This guide is for those who want to use their XPS 17 in dual boot with their (preinstalled) Windows 10 and a new Pop!_OS installation, without giving up Bitlocker Encryption in Windows nor LUKS encryption in Linux.

The only guides that I could find were for Ubuntu, which it should be identical to, but I found the ommission of a few steps to resolve issues that I encountered in my first install attempt. Hoping to save you some trouble, I am sharing the steps that worked for me, linking the original guides that I found useful.

1. Preparation

• 1.1 Of course: Backup all your data! You always do this when people tell you to, right? Maybe this time better be safe than sorry.
• 1.2 Safely note your Bitlocker recovery key somewhere off your XPS. Where to find it

AlecSchneider

cd

# you can do this all in one command
wget -qO- http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86/apk-tools-static-2.10.5-r1.apk | tar -xz sbin/apk.static && ./sbin/apk.static add apk-tools && rm sbin/apk.static

apk add python3

david-crespo

TypeScript release highlights

These aren't meant to be comprehensive. They're just the features that most interest me. CFA = control-flow analysis.

1.4: union types and better inference on generics using the union type

1.6: JSX, intersection types, generic type aliases

1.8: type params referring to other type params, string literal types