mildsunrise

#!/usr/bin/env python3
'''
Portable* ISO Base Media File Format dissector / parser.
Usage: ./mp4parser.py <file name>

(*) Needs Python 3.8+

Goals / development guidelines:

  - Low level. Meant as a dissector, i.e. to obtain info about the structure of the file

mildsunrise

ssh-from

ssh-from simplifies common usage of SSH tunnels.
It instructs SSH to start a SOCKS proxy, and spawns a (local) shell that uses this proxy.

$ ssh-from my-host
$ curl http://foo/bar  # the request is tunnelled through my-host

mildsunrise

#!/usr/bin/python
"""
signalis.py decode <input.png> <output.json>
signalis.py encode <input.json> <output.png>

the decoder does NOT validate the input image! to do that, encode data again and check image pixels match
"""

import os, sys
import numpy as np

mildsunrise

[Tuya][]'s IR blasters, like the [ZS08][], have the ability to both learn and blast generic IR codes. These IR codes are given to the user as an opaque string, like this:

A/IEiwFAAwbJAfIE8gSLIAUBiwFAC+ADAwuLAfIE8gSLAckBRx9AB0ADBskB8gTyBIsgBQGLAUALA4sB8gRAB8ADBfIEiwHJAeARLwHJAeAFAwHyBOC5LwGLAeA97wOLAfIE4RcfBYsB8gTyBEAFAYsB4AcrCYsB8gTyBIsByQHgPY8DyQHyBOAHAwHyBEAX4BVfBIsB8gTJoAMF8gSLAckB4BUvAckB4AEDBfIEiwHJAQ==

Not much is known about the format of these IR code strings, which makes it difficult to use codes obtained through other means (such as a

mildsunrise

open import Level using (suc; _⊔_)
open import Function using (id; _∘_)

open import Data.List as List using (
    List; []; _∷_; [_]; map; reverse; align; alignWith; foldr; head; last; drop; length
    )
import Data.List.Properties as List
import Data.List.Relation.Unary.All as All
import Data.List.Relation.Binary.Pointwise as PW

mildsunrise

JNIEnv

(keep in mind that JNI methods get a JNIEnv *, not a direct JNIEnv)

given JNIEnv x, you can write ((void**)x)[N] to access a function pointer, where N is:

     4	GetVersion
     5	DefineClass
 6	FindClass

mildsunrise

import java.awt.*;
import java.awt.datatransfer.*;
import java.awt.image.*;
import java.io.*;

public class Main {
	public static void main(String[] arg) {
		var flavorMap = (FlavorTable) SystemFlavorMap.getDefaultFlavorMap();
		System.out.println("formats for image flavor: ");
		for (var format : flavorMap.getNativesForFlavor(DataFlavor.imageFlavor))

mildsunrise

use std::{ops::{Add, AddAssign}, convert::TryInto};

/// In-place unstable radix sort with sentinel
///
/// - `L` is the type used for bin counts (must be able to hold `arr.len()`).
/// - `key: F` is a function taking an array item + a level, and returning an alphabet symbol.
/// - `AL` is the alphabet length, i.e. number of bins. it must hold that `key(...) < AL`.
///
/// 0 is the sentinel, meaning that for any item, `key(item, max_level) == 0`.
/// `max_level` may differ among items.

mildsunrise

Netboot Ubuntu with EFI

This method is not netinst. The ISO is downloaded from a URL into RAM, and mounted. After that, installation proceeds exactly as if it was a pen drive / CDROM, and the network cable can be disconnected if you want.

You do not need internet in either computer, just the ISO file.

We don't touch any system files, just delete $TFTPROOT and dnsmasq.conf when you're done.

Before you begin

mildsunrise

'''
Reads the contents of a TCP stream carrying [one side of] an
RTMP connection, and blindly dumps streams above 0 in an FLV.

$ ./rtmp2flv.py < tcp-stream > video.flv
'''

from enum import IntEnum, unique
from dataclasses import dataclass, field
from typing import NamedTuple, Self, Optional