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Name	Size	Permission	Date
async_dns.py	874 B	-rw-r--r--	2024-02-18 18:35
ddns.py	1.17 KB	-rw-r--r--	2024-02-18 18:35
ddr.py	950 B	-rw-r--r--	2024-02-18 18:35
doh-json.py	2.93 KB	-rw-r--r--	2024-02-18 18:35
doh.py	534 B	-rw-r--r--	2024-02-18 18:35
doq.py	3.07 KB	-rw-r--r--	2024-02-18 18:35
e164.py	115 B	-rw-r--r--	2024-02-18 18:35
ecs.py	450 B	-rw-r--r--	2024-02-18 18:35
edns.py	1.7 KB	-rw-r--r--	2024-02-18 18:35
edns_resolver.py	1.5 KB	-rw-r--r--	2024-02-18 18:35
mx.py	189 B	-rw-r--r--	2024-02-18 18:35
name.py	356 B	-rw-r--r--	2024-02-18 18:35
query_specific.py	1.62 KB	-rw-r--r--	2024-02-18 18:35
receive_notify.py	1022 B	-rw-r--r--	2024-02-18 18:35
reverse.py	1.36 KB	-rw-r--r--	2024-02-18 18:35
reverse_name.py	140 B	-rw-r--r--	2024-02-18 18:35
send_notify.py	2.4 KB	-rw-r--r--	2024-02-18 18:35
wire_read_tcp.py	1.62 KB	-rw-r--r--	2024-02-18 18:35
xfr.py	340 B	-rw-r--r--	2024-02-18 18:35
zonediff.py	11.89 KB	-rw-r--r--	2024-02-18 18:35

Rename

#!/usr/bin/env python3

# Usage: reverse.py <zone_filename>...
#
# This demo script will load in all of the zones specified by the
# filenames on the command line, find all the A RRs in them, and
# construct a reverse mapping table that maps each IP address used to
# the list of names mapping to that address.  The table is then sorted
# nicely and printed.
#
# Note!  The zone name is taken from the basename of the filename, so
# you must use filenames like "/wherever/you/like/dnspython.org" and
# not something like "/wherever/you/like/foo.db" (unless you're
# working with the ".db" GTLD, of course :)).
#
# If this weren't a demo script, there'd be a way of specifying the
# origin for each zone instead of constructing it from the filename.

import dns.zone
import dns.ipv4
import os.path
import sys
from typing import Dict, List  # pylint: disable=unused-import

reverse_map = {}  # type: Dict[str, List[str]]

for filename in sys.argv[1:]:
    zone = dns.zone.from_file(filename, os.path.basename(filename), relativize=False)
    for name, ttl, rdata in zone.iterate_rdatas("A"):
        print(type(rdata))
        try:
            reverse_map[rdata.address].append(name.to_text())
        except KeyError:
            reverse_map[rdata.address] = [name.to_text()]

for k in sorted(reverse_map.keys(), key=dns.ipv4.inet_aton):
    v = reverse_map[k]
    v.sort()
    print(k, v)