requests-safe 0.2

Provides an adapter for requests that won't allow connections to "unsafe" networks.

requests-safe

This project provides an HTTPAdapter for the Requests library that will disallow connections to networks that are considered unsafe to connect to.

The primary use case is to safely be able to retrieve items from a user provided URL without potentially requesting internal or secret resources within ones own network.

Usage

It’s very simple to use this library, install it as part of your project and then the following code will protect all requests against accidentally retrieving something from an IP address in the ranges listed below!

import requests_safe
from requests import Session

with Session() as s:
    requests_safe.apply(s)

    s.get("https://google.com/")

There is unfortunately no global way to apply this, so using requests.get() and friends directly will not be protected by default.

IPv4 unsafe networks

These are the IPv4 networks that are blocked from being conneted to:

Name	Network (CIDR)
RFC1918 (private network)	10.0.0.0/8
RFC1918	172.16.0.0/12
RFC1918	192.168.0.0/16
Link-Local	169.254.0.0/16
CG-NAT address space	100.64.0.0/10
Localhost/loopback	127.0.0.0/8
Wildcard IP	0.0.0.0/32
IETF Protocol Assignments	192.0.0.0/24
TEST-NET-1	192.0.2.0/24
RESERVED	192.88.99.0/24
Benchmark testing	198.18.0.0/15
TEST-NET-2	198.51.100.0/24
TEST-NET-3	203.0.113.0/24
IP Multicast	224.0.0.0/4
RESERVED	240.0.0.0/4
Limited broadcast	255.255.255.255/32

IPv6 unsafe networks

These are the IPv6 networks that are blocked from being connected to:

Name	Network (CIDR)
Localhost/unspecified address	::/128
Loopback	::1/128
IPv4 mapped address	::ffff:0:0/96
IPv4 translated addresses	::ffff:0:0:0/96
IPv4/IPv6 translation	64:ff9b::/96
Discard prefix	100::/64
Teredo tunneling	2001::/32
Orchid v2 (abondoned)	2001:20::/28
Documentation	2001:db8::/32
6to4 addressing scheme	2002::/16
ULA address space	fc00::/7
Link-local address space	fe80::/10
Global multicast	ff00::/8

0.2 (2019-04-24)

Project is open sourced!

• No further changes from 0.1

0.1 (2019-04-23)

Internal Crunch.io only version.

• New HTTP Adapter for the Requests library.

Copyright (c) 2019 Crunch

Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.