Paulo Costa paulo-raca

This code ensures X-Forward (and friends) headers are updated correctly when using stacked proxies: the host, protocol and "for" should be inherited from the previous proxies.

Of course, there are 3 competing/similar ways to retrieve this information from the previous Proxy, so this tries to be compatible with them all:

Forwarded (new, nicer and standardized in rfc7239)
X-Forwarded-[For/Host/Proto], the legacy but de-facto standard
X-Real-IP, a less-common alternative to X-Forwarded-For[0].

Also, retrieving them from the incoming request requires caution: Malicious clients may try inject these headers, so these headers should only be used when we expect them.

	#!/usr/bin/env python3

	"""
	Parser for Android Traces.

	Based on documentation from https://rhye.org/post/android-profiling-flamegraphs/
	"""

	from dataclasses import dataclass
	from enum import Enum

	import asyncio
	import time

	class Timer:
	def now():
	raise NotImplemented()
	async def wait(time):
	raise NotImplemented()

	class WallTimer(Timer):

	package kotlinx.coroutines.sync

	import kotlinx.coroutines.TimeoutCancellationException
	import kotlinx.coroutines.sync.Mutex
	import kotlinx.coroutines.withTimeout
	import java.util.function.Predicate
	import kotlin.time.Duration
	import kotlin.time.ExperimentalTime
	import kotlin.time.nanoseconds

	package com.crowdstrike.android.vpn.util

	import android.net.ConnectivityManager
	import android.net.LinkProperties
	import android.net.Network
	import android.net.NetworkCapabilities
	import android.util.Log

	/**
	* NetworkCallback is quite inconvenient in that data is split between

	[user]
	email = Xxx Yzz
	name = xxx
	signingkey = /home/xxx/.ssh/id_rsa

	[sendemail]
	from = Xxx Yyy <xxx@gmail.com>
	smtpuser = xxx@gmail.com
	smtppass = xxx
	smtpserver = smtp.googlemail.com

	#!/usr/bin/env python3
	import string
	import secrets
	n=16
	charset = string.ascii_letters + string.digits + string.punctuation
	print("".join([secrets.choice(charset) for i in range(n)]))