#!/usr/bin/python3
## Version : 0.1

##  BIND / Named updater for sebsauvage.net's blocklist.
##  Usage :
##  -------
##     1/ Update this param to match the file to be created :
dest_named_list = "/var/named/badlist-sebsauvage.zone"
dest_named_list_tmp = "/var/named/badlist-sebsauvage.zone-tmp"

##     2/ Update bind's conf to add a  :
##		/etc/named.conf
##			Add in options { ... }; block
##				response-policy { zone "badlist-sebsauvage"; };
##				
##			Add _after_ (outside) options { ... }; block 
##				zone "badlist-sebsauvage" { 
##					  type master; 
##					  file "badlist-sebsauvage.zone"; 
##					  allow-query { none; }; 
##				};
##
##	3/ Run this as a cron (after 04:30 PM, Europe/Paris localtime)
##	_do not hammer : updated daily !!_
##
##	Enjoy :-)
##	(copyleft) 2026 mansuetus () spontex.org
##
##

import requests, os

if not os.access( dest_named_list, os.R_OK ):
    print ("sebsauvage.net's local file ({}) is not present. Please create it (a.k.a : run '# touch {}')".format(dest_named_list, dest_named_list))
    exit(1)

if not os.access( dest_named_list, os.W_OK ):
    print ("sebsauvage.net's local file ({}) is not WRITABLE. Please check permissions (!! /var/named is NOT user accessible by default)".format(dest_named_list))
    exit(1)

r = requests.get('https://sebsauvage.net/hosts/raw')
if not r:
    print ("sebsauvage.net's file could not be downloaded : is the world doomed ?")
    exit(1)


f = open ("{}".format(dest_named_list_tmp), 'wb')
f.write(b"$TTL 1H\n\n@ IN SOA LOCALHOST. dns-master.localhost. (1 1h 15m 30d 2h)\n@ IN NS  LOCALHOST.;\n")

for l in r.iter_lines():
    ## print (l.decode("utf-8"))
    f.write (l + b" CNAME . ;\n")
f.close()

os.replace(dest_named_list_tmp, dest_named_list)
exit(0)