Route53 RecordSet Finder

r53_finder.py

#!/usr/bin/env python

from __future__ import print_function
import boto3
import sys


r53 = boto3.client('route53')


def recurse_zones(client, looking_for):
    print("Looking for: {}".format(looking_for))
    pager = client.get_paginator('list_hosted_zones')
    for page in pager.paginate():
        for zone in page['HostedZones']:
            _, _, zone_id = zone['Id'].split('/')
            print("Checking zone ({i}): {n}".format(
                i=zone_id,
                n=zone['Name']))
            recurse_records(client, zone_id, looking_for)


def recurse_records(client, zone_id, looking_for):
    state = 0
    old_state = state
    pager = client.get_paginator('list_resource_record_sets')
    for page in pager.paginate(HostedZoneId=zone_id):
        for rrset in page['ResourceRecordSets']:
            targets = []
            if 'ResourceRecords' in rrset:
                state = state | 1
                targets += [
                    rr['Value'].rstrip('.')
                    for rr in rrset['ResourceRecords']
                ]
            if 'AliasTarget' in rrset:
                state = state | 2
                targets += [
                    at['DNSName'].rstrip('.')
                    for at in rrset['AliasTarget']
                ]
            matches = list(set(targets) & set(looking_for))
            if matches:
                print("Match ({z}): {t}: {n}\n{r}".format(
                    z=zone_id,
                    t=rrset['Type'],
                    n=rrset['Name'],
                    r=matches,
                ))

if __name__ == '__main__':
    assert len(sys.argv) > 1, \
        "Must provide IPs/hostnames being looked for"
    r53 = boto3.client('route53')

    recurse_zones(r53, sys.argv[1:])