ge0rg

# DHCPv6 script to create firewall address-lists for the parent and the delegated network
#
# Preparation:
#    /ipv6 firewall address-list add list=delegated_net
#    /ipv6 firewall address-list add list=parent_net
#
# change the prefix of your parent network:
:local parentPrefix 59

:global stripNetmask do={ :return ([:toip6 [:pick $1 0 [:find $1 "/"]]]); }

ge0rg

# function to format-print name ($1), count ($2) and percentage of total ($3)
:local format do={ :put ($1 . ": " . $2 . " (" . ((100*$2)/$3) . "%)"); }

:local total [ /ipv6/route/print count-only as-value where active bgp ]
$format "total" $total $total

# iterate all wireguard interfaces matching "wg-dn42-"
:foreach interface in=[/interface/wireguard/print proplist=name as-value where name ~ "wg-dn42-" ] \
do={ 
    :local ifname ($interface->"name")

ge0rg

#!/usr/bin/env python3

import math
import sys
import time

states = "RSDZTtWXxKWPI"

def get_state(pid):
    stat = open(f"/proc/{pid}/stat", "r").read().split(' ')

ge0rg

#!/usr/bin/env python3
#
# Pretty-Printer for USB-PD data exposed in /sys/class/typec/
#
# Based on https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-typec
#
# (C) Georg Lukas <georg@op-co.de>
#

from pathlib import Path

ge0rg

#!/usr/bin/env bash
#
# ***** Warning: this is not production-quality! *****
#
# this will extract the left + right images from all passed
# .MPO files, crop them to a percentage of the width (75% by
# default), and stitch them together into a diptych.
#
# Based on https://photo.stackexchange.com/a/100402/57928

ge0rg

#!/usr/bin/env python3

import rawpy
from PIL import Image
from blendmodes.blend import blendLayers, BlendType
from argparse import ArgumentParser
import numpy
import re

RAW_FORMATS = ['SRW']

ge0rg

Can you solve the IM spam problem by Proof-of-Work?

(data is from 2017)

1. PoW is much more energy-expensive on a mobile CPU than on a GPU cluster.
2. unless we make PoW prohibitively expensive for normal users, spammers won't be slowed / stopped by it.
3. spammers will either distribute PoW to their botnet, where you will be paying for the PoW, or rent some gigahashes.

The numbers

ge0rg

MAM Subscription

A client wants to connect, synchronize and have a chat history without holes starting from a client-defined event.

This is the anticipated flow:

1. connect, authenticate, bind
2. client: fetch everything(*) from MAM
   • this can be based on a start date (e.g. last 2 days) or the last known archive ID.

• (*) After completing this, the client will know the latest MAM-ID from that fetch (last_id), but maybe some messages arrived in between

ge0rg

Types of XMPP "References"

• Thread (in-reply-to); largely off-scope for our discussion
• References of things mentioned in the payload/body of a message (0372)
  • nicknames, URLs, old messages by means of xmpp: URI, etc.
  • multiple Reference elements are allowed
  • Can be used inside Attach-To to add References to a previous message
  • Can be sent by anyone
  • is irrelevant to MAM 2.0
• Attach-To for content that only makes sense in the context of another message

ge0rg

<?php
$url_parts = preg_split('/@|\/|;|\?/',$_SERVER["REQUEST_URI"]);
if (count($url_parts) < 4 || empty($url_parts[3])) {
  header('Location: https://yaxim.org');
  die();
} else {
  $localpart = strtolower(urldecode($url_parts[2]));
  $domainpart = strtolower(urldecode($url_parts[3]));
  $contact = htmlentities(ucwords($localpart,"-."));
  $jid = $localpart.'@'.$domainpart;