expand-blocklist.py

expand-blocklist.py

#!/usr/bin/env python

import csv
import codecs
import urllib.request
import argparse
import ipaddress


def iter_blocked_subnets():
    url = "https://raw.githubusercontent.com/zapret-info/z-i/master/dump.csv"
    response = urllib.request.urlopen(url)
    reader = csv.reader(codecs.iterdecode(response, 'cp1251'), delimiter=';')

    for row in reader:
        for ip in row[0].split(u' | '):
            try:
                yield ipaddress.ip_network(ip.strip())
            except (ipaddress.AddressValueError, ValueError):
                pass

def reveal_subnets(blocked_subnets):
    for subnet in blocked_subnets:
        for ip in subnet:
            yield ip

def main():
    for ip in reveal_subnets(iter_blocked_subnets()):
        print(ip)

if __name__ == '__main__':
    main()