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Gianluca Pacchiella gipi

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@renchap
renchap / README.md
Last active Jan 1, 2021
One-line certificate generation/renews with Letsencrypt and nginx
View README.md

Prerequisites : the letsencrypt CLI tool

This method allows your to generate and renew your Lets Encrypt certificates with 1 command. This is easily automatable to renew each 60 days, as advised.

You need nginx to answer on port 80 on all the domains you want a certificate for. Then you need to serve the challenge used by letsencrypt on /.well-known/acme-challenge. Then we invoke the letsencrypt command, telling the tool to write the challenge files in the directory we used as a root in the nginx configuration.

I redirect all HTTP requests on HTTPS, so my nginx config looks like :

server {
@maurisvh
maurisvh / spectrogram.py
Last active Jun 15, 2020
ANSI art spectrogram viewer that reads audio from a microphone
View spectrogram.py
#!/usr/bin/python
import numpy
import pyaudio
import re
import sys
WIDTH = 79
BOOST = 1.0
@AGWA
AGWA / cook_rsa_key.go
Last active Oct 11, 2018
Demonstrates that an RSA signature does not uniquely identify a public key.
View cook_rsa_key.go
/*
* Demonstrates that an RSA signature does not uniquely identify a public key.
* Given a signature, s, and a message m, it's possible to construct a new RSA key
* pair such that s is a valid signature for m under the new key pair.
*
* Requires Go version >= 1.5. Go <= 1.4 doesn't work due to a bug in the bignum
* package: https://github.com/golang/go/issues/9826
*
* Written in 2015 by Andrew Ayer <agwa@andrewayer.name>
*
@rupey
rupey / mandelbrot.sql
Last active Dec 7, 2020
Mandelbrot plot in postgres
View mandelbrot.sql
WITH RECURSIVE
x(i) AS ( VALUES (0)
UNION ALL SELECT i + 1
FROM x
WHERE i < 101),
Z(Ix, Iy, Cx, Cy, X, Y, I) AS (
SELECT
Ix,
Iy,
X :: FLOAT,
@bnagy
bnagy / gpgmutt.md
Last active Dec 29, 2020
Mutt, Gmail and GPG
View gpgmutt.md

GPG / Mutt / Gmail

About

This is a collection of snippets, not a comprehensive guide. I suggest you start with Operational PGP.

Here is an incomplete list of things that are different from other approaches:

  • I don't use keyservers. Ever.
  • Yes, I use Gmail instead of some bespoke hipster freedom service
View ShadowLayout.java
public class ShadowLayout extends FrameLayout implements ViewGroup.OnHierarchyChangeListener {
private int mBackgroundColor;
private int mShadowColor;
private float mShadowRadius;
private float mCornerRadius;
private float mDx;
private float mDy;
private Paint mPaint;
@Takhion
Takhion / ArcUtils.java
Last active Jul 10, 2020
Collection of methods to achieve better circular arc drawing, as Canvas.drawArc() is unreliable. See the related article: https://medium.com/p/9155f49166b8
View ArcUtils.java
/**
* ArcUtils.java
*
* Copyright (c) 2014 BioWink GmbH.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
View workflows-in-django.md

Workflows (States) in Django

I'm going to cover a simple, but effective, utility for managing state and transitions (aka workflow). We often need to store the state (status) of a model and it should only be in one state at a time.

Common Software Uses

  • Publishing (Draft->Approved->Published->Expired->Deleted)
@nuxlli
nuxlli / request.sh
Last active Mar 3, 2021
Examples of http request (in unix domain socket) with bash and [nc|socat]
View request.sh
#!/bin/bash
# References
# http://www.computerhope.com/unix/nc.htm#03
# https://github.com/daniloegea/netcat
# http://unix.stackexchange.com/questions/26715/how-can-i-communicate-with-a-unix-domain-socket-via-the-shell-on-debian-squeeze
# http://unix.stackexchange.com/questions/33924/write-inside-a-socket-open-by-another-process-in-linux/33982#33982
# http://www.linuxjournal.com/content/more-using-bashs-built-devtcp-file-tcpip
# http://www.dest-unreach.org/socat/
# http://stuff.mit.edu/afs/sipb/machine/penguin-lust/src/socat-1.7.1.2/EXAMPLES
@magopian
magopian / fix_permissions.py
Created Nov 19, 2013
Django admin command to "fix permissions" (create them properly for proxy models). This is needed because of the following bug in Django (not fixed as of 1.6): https://code.djangoproject.com/ticket/11154
View fix_permissions.py
# -*- coding: utf-8 -*-
"""Add permissions for proxy model.
This is needed because of the bug https://code.djangoproject.com/ticket/11154
in Django (as of 1.6, it's not fixed).
When a permission is created for a proxy model, it actually creates if for it's
base model app_label (eg: for "article" instead of "about", for the About proxy
model).