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 blend_modes import darken_only, lighten_only
from argparse import ArgumentParser
import numpy
import re
import sys

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;

ge0rg

Keybase proof

I hereby claim:

• I am ge0rg on github.
• I am ge0rg (https://keybase.io/ge0rg) on keybase.
• I have a public key whose fingerprint is CE57 348B 6A53 7B58 6ADF 991D B334 D308 962F D2DE

To claim this, I am signing this object:

ge0rg

01-31 02:55:30.303  1597  1597 I MainWindow: getConnectionState(): 1
01-31 02:55:30.783  1597  1606 I global  : Default buffer size used in BufferedReader constructor. It would be better to be explicit if an 8k-char buffer is required.
01-31 02:55:30.803  1597  1606 I global  : Default buffer size used in BufferedWriter constructor. It would be better to be explicit if an 8k-char buffer is required.
01-31 02:55:30.823  1597  1606 W System.err: java.lang.NoSuchMethodException: AndroidDebugger(XMPPConnection,Writer,Reader)
01-31 02:55:30.833  1597  1606 W System.err: 	at java.lang.Class.getMatchingConstructor(Class.java:674)
01-31 02:55:30.833  1597  1606 W System.err: 	at java.lang.Class.getConstructor(Class.java:486)
01-31 02:55:30.843  1597  1606 W System.err: 	at org.jivesoftware.smack.XMPPConnection.initReaderAndWriter(XMPPConnection.java:1095)
01-31 02:55:30.843  1597  1606 W System.err: 	at org.jivesoftware.smack.XMPPConnection.initConnection(XMPPConnection.java:920)
01-31 02:55:30.843  1597  1606 W Syst