rknblock.py

# -*- coding: utf-8 -*-
import socket
import binascii
import sys

SUBNET_LIST = {
    "52.56.0.0/16": "Amazon AWS",
    "206.189.0.0/16": "DigitalOcean",
    "167.99.0.0/16": "DigitalOcean",
    "165.227.0.0/16": "DigitalOcean",
    "159.89.0.0/16": "DigitalOcean",
    "206.189.0.0/16": "DigitalOcean",
    "167.99.0.0/16": "DigitalOcean",
    "35.208.0.0/12": "GOOGLE-CLOUD",
    "35.224.0.0/12": "GOOGLE-CLOUD",
    "35.192.0.0/12": "GOOGLE-CLOUD",
    "35.184.0.0/13": "GOOGLE-CLOUD",
    "34.192.0.0/10": "Amazon AWS",
    "52.192.0.0/11": "Amazon AWS",
    "52.64.0.0/12": "Amazon AWS",
    "54.144.0.0/12": "Amazon AWS",
    "54.160.0.0/12": "Amazon AWS",
    "34.240.0.0/13": "Amazon AWS",
    "34.248.0.0/13": "Amazon AWS",
    "18.130.0.0/16": "Amazon AWS",
    "13.125.0.0/16": "Amazon AWS",
    "52.57.0.0/16": "Amazon AWS",
    "35.180.0.0/16": "Amazon AWS",
    "18.144.0.0/16": "Amazon AWS",
    "52.58.0.0/15": "Amazon AWS",
    "159.89.0.0/16": "DigitalOcean",
    "18.196.0.0/15": "Amazon AWS",
    "18.184.0.0/15": "Amazon AWS",
    "54.228.0.0/15": "Amazon AWS",
    "35.178.0.0/15": "Amazon AWS",
    "35.156.0.0/14": "Amazon AWS",
    "13.56.0.0/14": "Amazon AWS",
    "35.160.0.0/13": "Amazon AWS",
    "18.194.0.0/15": "Amazon AWS",
    "165.227.0.0/16": "DigitalOcean",
    "139.59.0.0/16": "DigitalOcean, LLC",
    "18.236.0.0/15": "Amazon.com, Inc.",
    "54.64.0.0/13": "Amazon Technologies Inc.",
    "23.251.128.0/19": "Google LLC",
    "174.138.0.0/17": "DigitalOcean, LLC",
    "188.166.0.0/17": "Digital Ocean, Inc.",
    "159.203.0.0/16": "DigitalOcean, LLC",
    "128.199.0.0/16": "DigitalOcean Cloud",
    "159.65.0.0/16": "DigitalOcean, LLC",
    "52.32.0.0/16": "Amazon Technologies Inc.",
    "54.212.0.0/15": "Amazon.com, Inc.",
    "18.218.0.0/16": "Amazon Technologies Inc.",
    "13.230.0.0/15": "Amazon Data Services Japan",
    "35.176.0.0/15": "Amazon Data Services UK",
    "195.154.0.0/17": "Iliad Entreprises Customers",
    "51.136.0.0/15": "Microsoft Limited UK",
    "46.101.128.0/17": "Digital Ocean, Inc.",
    "185.166.212.0/23": "Clouding.io Virtual Machine Hosting",
    "178.63.0.0/16": "Hetzner Online GmbH",
    "51.15.0.0/16": "ONLINENETDEDICATEDSERVERSNL",
    "18.204.0.0/14": "Amazon Technologies Inc.",
    "91.121.0.0/16": "OVH SAS"
}


def ip_in_subnetwork(ip_address, subnetwork):
    (ip_integer, version1) = ip_to_integer(ip_address)
    (ip_lower, ip_upper, version2) = subnetwork_to_ip_range(subnetwork)
    if version1 != version2:
        raise ValueError("incompatible IP versions")
    return (ip_lower <= ip_integer <= ip_upper)

def ip_to_integer(ip_address):
    for version in (socket.AF_INET, socket.AF_INET6):
        try:
            ip_hex = socket.inet_pton(version, ip_address)
            ip_integer = int(binascii.hexlify(ip_hex), 16)
            return (ip_integer, 4 if version == socket.AF_INET else 6)
        except:
            pass
    raise ValueError("invalid IP address")

def subnetwork_to_ip_range(subnetwork):
    try:
        fragments = subnetwork.split('/')
        network_prefix = fragments[0]
        netmask_len = int(fragments[1])
        for version in (socket.AF_INET, socket.AF_INET6):
            ip_len = 32 if version == socket.AF_INET else 128
            try:
                suffix_mask = (1 << (ip_len - netmask_len)) - 1
                netmask = ((1 << ip_len) - 1) - suffix_mask
                ip_hex = socket.inet_pton(version, network_prefix)
                ip_lower = int(binascii.hexlify(ip_hex), 16) & netmask
                ip_upper = ip_lower + suffix_mask
                return (ip_lower,
                        ip_upper,
                        4 if version == socket.AF_INET else 6)
            except:
                pass
    except:
        pass
    raise ValueError("invalid subnetwork")


if __name__ == '__main__':
    try:
        ip2check = sys.argv[1]
        for subnet in SUBNET_LIST:
            if ip_in_subnetwork(ip2check, subnet):
                print "RKN block IP {}({}) with subnet {}. Check it here: https://blocklist.rkn.gov.ru".format(ip2check, dict(SUBNET_LIST)[subnet], subnet)
            else:
                print "Looks should be fine. But who knows"
    except:
        print "python rknblock.py 127.0.0.1"