Iván || HacKan HacKanCuBa

## pickle_deal.py
"""Pickle dumps test.

When pickle dumps a class, it will include the FQDN for the module. In this example,
we see how an imported class gets dumped including its module information, whereas
a local one has the current module name, which could be `__main__` or other depending
on how the interpreter was called!

If you save this file as `pickle_deal.py` and then in a python terminal you import it
`import pickle_deal`, you will see the following printed:
b'\x80\x04\x95)\x00\x00\x00\x00\x00\x00\x00\x8c\x0bpickle_deal\x94\x8c\x07Decimal\x94\x93\x94\x8c\x07123.456\x94\x85\x94R\x94.'

## sqlalchemy_helpers.py
import functools
from contextlib import asynccontextmanager, contextmanager
from time import monotonic
from typing import Annotated, Any, AsyncGenerator, Generator, Hashable, Iterable, Literal, Optional, Sized, Union, overload

from sqlalchemy import event
from sqlalchemy.dialects.mysql.asyncmy import AsyncAdapt_asyncmy_cursor
from sqlalchemy.engine import URL, Connection, Engine, Row, create_engine
from sqlalchemy.ext.asyncio import AsyncEngine, AsyncSession, async_sessionmaker, create_async_engine
from sqlalchemy.orm import Session, sessionmaker

## cache_helpers.py
"""Handy cache helpers.

These are not yet production ready, as I haven't toroughly tested them, but close.

---

Mandatory license blah blah:

Copyright (C) 2023 HacKan (https://hackan.net)
This Source Code Form is subject to the terms of the Mozilla Public

## gunicorn.py
"""Gunicorn config file.

by HacKan (https://hackan.net)
Find it at: https://gist.github.com/HacKanCuBa/275bfca09d614ee9370727f5f40dab9e
Based on: https://gist.github.com/KodeKracker/6bc6a3a35dcfbc36e2b7

Changelog
=========

See revisions to access other versions of this file.

## replacing_openpgp_2019.md

      
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                / replacing_openpgp_2019.md
            
            
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                Replacing OpenPGP in 2019
              
          
    Replacing OpenPGP in 2019

Update for 2023: this is still a thing!
It's 2019, and OpenPGP has to die already (for very many reasons I won't list, but see 1, 2 and 3). At least for most uses.

I'll try to list here some replacements categorized by usage (also see 5), because there's no one single-do-all app, and there shouldn't be!
All of this resurfaced because of a vuln exploited recently on SKS keyservers (that has NOTHING to do with OpenPGP nor GnuPG but yes, they're related to the environment) (see 4).
Note: only FOSS software listed (although some server-side implementations could be closed, where applicable).

  
## logo_turtle.py
"""Logo (programming language) turtle exercise."""

import typing
import unittest
from dataclasses import dataclass
from enum import Enum
from itertools import zip_longest
from unittest import TestCase


## find-https-debian-archives.py
#!/usr/bin/env python3

"""Find Debian HTTPS archives.

Script based on https://gist.github.com/eighthave/7285154
I made it asynchronous and parallel, so overall I measured it to be 6 times faster or more.

Requires Python 3.7+

Additional resources not exactly related to this script but could be helpful for

## encrypted_swap_hibernation_debian9.md

      
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                HacKanCuBa
                / encrypted_swap_hibernation_debian9.md
            
            
              Last active
              January 21, 2023 21:15
            
              
                Encrypted SWAP hibernation in Debian 9+
              
          
    Encrypted SWAP hibernation in Debian 9+

It took me about 6 hours to find out all of this, but after reading a ton of man pages, initram scripts, and bug reports, I got a working result that takes about 2' to set up...
The point is to have a SWAP partition encrypted with LUKS, and it should be decypted during boot.
When using SysV, initram hooks and scripts in Debian worked like a charm but then, Systemd came and it's not yet fully implemented so this kind of crap happens. Systemd's cryptsetup doesn't support parameters in /etc/crypttab so using a script there is ignored:
/* Options Debian's crypttab knows we don't:


## blake2signer.py
# ---
# DEPRECATED BY: https://gitlab.com/hackancuba/blake2signer
# ---
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at https://mozilla.org/MPL/2.0/.
#
# by HacKan (https://hackan.net), 2020.
# This software is provided as-is. You are free to use, share, modify
# and share modifications under the terms of that license, even with

## sshd_config
# Modern secure (OpenSSH Server 7+) SSHd config by HacKan
# Refer to the manual for more info: https://www.freebsd.org/cgi/man.cgi?sshd_config(5)

# Server fingerprint
# Regenerate with: ssh-keygen -o -f /etc/ssh/ssh_host_rsa_key -N '' -t rsa -b 4096
HostKey /etc/ssh/ssh_host_rsa_key
# Regerate with: ssh-keygen -o -f /etc/ssh/ssh_host_ed25519_key -N '' -t ed25519
HostKey /etc/ssh/ssh_host_ed25519_key

# Log for audit, even users' key fingerprint
	"""Pickle dumps test.

	When pickle dumps a class, it will include the FQDN for the module. In this example,
	we see how an imported class gets dumped including its module information, whereas
	a local one has the current module name, which could be `__main__` or other depending
	on how the interpreter was called!

	If you save this file as `pickle_deal.py` and then in a python terminal you import it
	`import pickle_deal`, you will see the following printed:
	b'\x80\x04\x95)\x00\x00\x00\x00\x00\x00\x00\x8c\x0bpickle_deal\x94\x8c\x07Decimal\x94\x93\x94\x8c\x07123.456\x94\x85\x94R\x94.'
	import functools
	from contextlib import asynccontextmanager, contextmanager
	from time import monotonic
	from typing import Annotated, Any, AsyncGenerator, Generator, Hashable, Iterable, Literal, Optional, Sized, Union, overload

	from sqlalchemy import event
	from sqlalchemy.dialects.mysql.asyncmy import AsyncAdapt_asyncmy_cursor
	from sqlalchemy.engine import URL, Connection, Engine, Row, create_engine
	from sqlalchemy.ext.asyncio import AsyncEngine, AsyncSession, async_sessionmaker, create_async_engine
	from sqlalchemy.orm import Session, sessionmaker
	"""Handy cache helpers.

	These are not yet production ready, as I haven't toroughly tested them, but close.

	---

	Mandatory license blah blah:

	Copyright (C) 2023 HacKan (https://hackan.net)
	This Source Code Form is subject to the terms of the Mozilla Public
	"""Gunicorn config file.

	by HacKan (https://hackan.net)
	Find it at: https://gist.github.com/HacKanCuBa/275bfca09d614ee9370727f5f40dab9e
	Based on: https://gist.github.com/KodeKracker/6bc6a3a35dcfbc36e2b7

	Changelog
	=========

	See revisions to access other versions of this file.
	"""Logo (programming language) turtle exercise."""

	import typing
	import unittest
	from dataclasses import dataclass
	from enum import Enum
	from itertools import zip_longest
	from unittest import TestCase
	#!/usr/bin/env python3

	"""Find Debian HTTPS archives.

	Script based on https://gist.github.com/eighthave/7285154
	I made it asynchronous and parallel, so overall I measured it to be 6 times faster or more.

	Requires Python 3.7+

	Additional resources not exactly related to this script but could be helpful for
	# ---
	# DEPRECATED BY: https://gitlab.com/hackancuba/blake2signer
	# ---
	# This Source Code Form is subject to the terms of the Mozilla Public
	# License, v. 2.0. If a copy of the MPL was not distributed with this
	# file, You can obtain one at https://mozilla.org/MPL/2.0/.
	#
	# by HacKan (https://hackan.net), 2020.
	# This software is provided as-is. You are free to use, share, modify
	# and share modifications under the terms of that license, even with
	# Modern secure (OpenSSH Server 7+) SSHd config by HacKan
	# Refer to the manual for more info: https://www.freebsd.org/cgi/man.cgi?sshd_config(5)

	# Server fingerprint
	# Regenerate with: ssh-keygen -o -f /etc/ssh/ssh_host_rsa_key -N '' -t rsa -b 4096
	HostKey /etc/ssh/ssh_host_rsa_key
	# Regerate with: ssh-keygen -o -f /etc/ssh/ssh_host_ed25519_key -N '' -t ed25519
	HostKey /etc/ssh/ssh_host_ed25519_key

	# Log for audit, even users' key fingerprint