Basic PTR records search per IPv4 subnet

bin/ptr-search.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Tool to query an IPv4 subnet for existing PTR records
+#
+# Software is free software released under the "Modified BSD license"
+#
+# Copyright (c) 2013-2014 Alexandre Dulaunoy - a@foo.be
+
+
+import redis
+import argparse
+import netaddr
+
+argParser = argparse.ArgumentParser(description='ptr-db: Search PTR records')
+argParser.add_argument('-s', action='append', help='IPv4 subnet to lookup')
+argParser.add_argument('-v', action='store_true', default=False, help='Dump queries')
+args = argParser.parse_args()
+
+if args.s is None:
+    argParser.print_help()
+    exit(1)
+
+
+# LevelDB backend using Redis protocol https://github.com/KDr2/redis-leveldb
+r = redis.StrictRedis(host='localhost', port=8323)
+
+for subnet in args.s:
+    iplist = netaddr.IPNetwork(subnet)
+    for ip in iplist:
+        ptr = r.get(ip)
+        if ptr is not None:
+            print (str(ip)+","+str(r.get(ip), 'utf-8'))
+        else:
+            print (str(ip))