abeluck

// Jetty version: 12.0.6
public class JettyClient {
    public static void main(String[] args) throws Exception {
        SecurityProviders.init(); // initializes the Conscrypt and BouncyCastle security providers

        SslContextFactory.Client sslContextFactory = new SslContextFactory.Client();
        // This disables SSL certificate validation
        // handy for localhost testing, not so handy in production
        sslContextFactory.setTrustAll(true);

abeluck

About

This is a local copy of the commands from:

• http://www.jmknoble.net/keys/#master-key
• http://www.macfreek.nl/mindmaster/Convert_GPG_keys_to_subkeys
• http://wiki.fsfe.org/Card_howtos/Card_with_subkeys_using_backups/

This guide serves as a reference of collected information necessary for strict management of PGP keys. This includes keeping a master key that always remains

abeluck

# creates a silence in alertmanager that starts `now` and lasts for 10 minutes

- hosts: localhost
  gather_facts: yes
  tasks:
    - set_fact:
        start_datetime: "{{ ''| local_time_iso8601 }}"
        future_datetime: "{{ ''|local_time_iso8601 | add_time_iso8601(minutes=10)  }}"
    - debug:
        var: future_datetime

abeluck

Build Notes

@abeluck's build notes for ipfs-shipyard/gomobile-ipfs

Go setup

Install golang. I used 1.18 from the fedora repos.

Python setup

abeluck

#!/bin/bash
set -euo pipefail

opt=${1:-}

usage() {
  echo "$0 - ssh into a remote gitpod with your gpg-agent forwarded"
  echo
  echo "usage: $0 [option]"
  echo

abeluck

Concat MP4 files without transcoding to mpeg

1. Use the h264_mp4toannexb bitstream filter to convert the mp4s (video steam only) into the AnnexB bitstream format

   ffmpeg -i input1.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part1.ts
   # repeat for up to inputN
   

2. Concat the files using cat

abeluck

# Generate a signing key for synapse from the command line
#
# Usage: python3 generate-signing-key.py
#
# You must have the signedjson package installed:
#  apt install python3-signedjson
#  pip3 install signedjson
# 
# Author: Abel Luck <abel@guardianproject.info>
# Created: April 25 2019

abeluck

On the Subject of Verification of Provenance for Debian Docker Images

note: this was last tested in 2019. things have probably changed.

Prepare

git clone https://github.com/debuerreotype/debuerreotype
cd debuerreotype

abeluck

/**
 * This is simple HTTP local server for streaming InputStream to apps which are capable to read data from url.
 * Random access input stream is optionally supported, depending if file can be opened in this mode. 
 *
 * from: http://stackoverflow.com/a/9096241
 */
public class StreamOverHttp{
   private static final boolean debug = false;

   private final Browser.FileEntry file;

abeluck

#!/bin/bash
# Builds emacs from source
# Tested on Debian 9 (stretch)


set -e

emacs_src=$HOME/src/emacs
emacs_dest=$HOME/.local
emacs_tag=emacs-26.2