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#!/usr/bin/env python
# Thu, 13 Mar 14 (PDT)
# encap-pkt.py: Test Packet methods and ip.new
# Copyright (C) 2015, Nevil Brownlee, U Auckland | WAND
from plt_testing import *
t = get_example_trace('anon-v4.pcap')
#t = get_rlt_example_file('icmp-sample.pcap')
def compare_objects(a, b, msg):
if a.data != b.data: # Compare bytearrays
print_data("a =", 5, a.data)
print_data("b =", 5, b.data)
print ">>> %s <<<" % msg
sys.exit()
n = nip = 0; offset = 12
for pkt in t:
n += 1
ip = pkt.ip
if not ip:
continue
print "%5d:" % (n),
print_ip(ip, offset)
l3ip = plt.ip(pkt.layer3.data);
compare_objects(ip, l3ip, "ip : layer3")
tcp = pkt.tcp; udp = pkt.udp; icmp = pkt.icmp
print " ",
if tcp:
print_tcp(tcp, offset)
ntcp = plt.tcp(ip)
compare_objects(tcp, ntcp, "tcp : new tcp")
elif udp:
print_udp(udp, offset)
nudp = plt.udp(ip)
compare_objects(udp, nudp, "udp : new udp")
elif icmp:
print_icmp(icmp, offset)
nicmp = plt.icmp(ip)
compare_objects(icmp, nicmp, "icmp : new icmp")
else:
margin = ' ' * offset
print "Unknown: proto=%d" % (ip.proto)
print
nip += 1
if nip >= 15:
break
t.close
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