Zephyr Lykos mochaaP

title

description

date

一. 文字聊天协议族(TCPF, Text Chatting Protocol Family)

朴素VPN：一个纯内核级静态隧道

由于路由管控系统的建立，实时动态黑洞路由已成为最有效的封锁手段，TCP连接重置和DNS污染成为次要手段，利用漏洞的穿墙方法已不再具有普遍意义。对此应对方法是多样化协议的VPN来抵抗识别。这里介绍一种太简单、有时很朴素的“穷人VPN”。

朴素VPN只需要一次内核配置（Linux内核），即可永久稳定运行，不需要任何用户态守护进程。所有流量转换和加密全部由内核完成，原生性能，开销几乎没有。静态配置，避免动态握手和参数协商产生指纹特征导致被识别。并且支持NAT，移动的内网用户可以使用此方法。支持广泛，基于L2TPv3标准，Linux内核3.2+都有支持，其他操作系统原则上也能支持。但有两个局限：需要root权限；一个隧道只支持一个用户。

朴素VPN利用UDP封装的静态L2TP隧道实现VPN，内核XFRM实现静态IPsec。实际上IP-in-IP隧道即可实现VPN，但是这种协议无法穿越NAT，因此必须利用UDP封装。内核3.18将支持Foo-over-UDP，在UDP里面直接封装IP，与静态的L2TP-over-UDP很类似。

创建一个朴素VPN

As soon as I saw the new YouTube Player and its new morphing play/pause button, I wanted to understand how it was made and replicate it myself.

From my analysis it looks like YouTube is using [SMIL animations][1]. I could not get those animations to work on browsers other than Chrome and it appears [that they are deprecated and will be removed][2]. I settled for the following technique:

Define the icon path elements inside a defs element so that they are not drawn.
Draw one icon by defining a use element whose xlink:href attribute points to one of the paths defined in the previous step. Simply [changing this attribute to point to the other icon is enough to swap them out][3], but this switch is not animated. To do that,
Replace the use with the actual path when the page is loaded.

Commit Message Guidelines

In the last few years, the number of programmers concerned about writing structured commit messages have dramatically grown. As exposed by Tim Pope in article readable commit messages are easy to follow when looking through the project history. Moreover the AngularJS contributing guides introduced conventions that can be used by automation tools to automatically generate useful documentation, or by developers during debugging process.

This document borrows some concepts, conventions and even text mainly from these two sources, extending them in order to provide a sensible guideline for writing commit messages.

Goals
Proposal
- Commit Message Format

Allowed ``

Not all random values are created equal - for security-related code, you need a specific kind of random value.

A summary of this article, if you don't want to read the entire thing:

Don't use Math.random(). There are extremely few cases where Math.random() is the right answer. Don't use it, unless you've read this entire article, and determined that it's necessary for your case.
Don't use crypto.getRandomBytes directly. While it's a CSPRNG, it's easy to bias the result when 'transforming' it, such that the output becomes more predictable.
If you want to generate random tokens or API keys: Use uuid, specifically the uuid.v4() method. Avoid node-uuid - it's not the same package, and doesn't produce reliably secure random values.
If you want to generate random numbers in a range: Use random-number-csprng.

You should seriously consider reading the entire article, though - it's

	import re, sys
	from xml.dom import minidom, Node
	import math
	import argparse

	class Matrix:
	def m(self, i, j, value=None):
	if i >= self.rows or j >= self.cols:
	raise ValueError("Argument out of range")

	/*
	Copyright (c) 2012- kikairoya

	Boost Software License - Version 1.0 - August 17th, 2003

	Permission is hereby granted, free of charge, to any person or organization
	obtaining a copy of the software and accompanying documentation covered by
	this license (the "Software") to use, reproduce, display, distribute,
	execute, and transmit the Software, and to prepare derivative works of the
	Software, and to permit third-parties to whom the Software is furnished to

	/*
	* C11 <threads.h> emulation library
	*
	* (C) Copyright yohhoy 2012.
	* Distributed under the Boost Software License, Version 1.0.
	* (See copy at http://www.boost.org/LICENSE_1_0.txt)
	*/
	#ifndef EMULATED_THREADS_H_INCLUDED_
	#define EMULATED_THREADS_H_INCLUDED_

	QTabBar,
	QTabBar::tab
	{
	font-family: "Noto Sans";
	font-size: 11px;
	height: 16px;
	padding: 2px;
	border: 0px;
	border-bottom: 3px solid palette(dark);
	background-color: palette(dark);




	user=root

	# disable dns server
	port=0

	# enable tftp server
	enable-tftp