#!/opt/local/bin/python

import sys # for sys.argv, sys.path.append

# dnslib from https://pypi.python.org/pypi/dnslib, install with "pip install dnslib"
# When using a local copy of dnslib:
# sys.path.append('~sergey/cs60/dns/dnslib-0.9.7') or wherever the downloaded copy lives

from scapy.all import *
from dnslib import *

#l = rdpcap("recursive-dns-lookup-noDNSSEC.pcap")
#l = rdpcap("recursive-dns-edns-no.pcap")
#l = rdpcap("dns-reverse.pcap")
#l = rdpcap("dns-reverse-afresh.pcap")
l = rdpcap(sys.argv[1])
for pp in l :
    print "\n-------------------[ %s -> %s ]-------------------" % (pp[IP].src , pp[IP].dst)
    d = DNSRecord.parse(str(pp)[0x2a:])  # offset 0x2a is there the DNS payload starts
    print(d)                             # thanks to dnslib, prints d in the "dig" format