1#!/usr/local/bin/python2.7
2
3print "atomic fragment with offset=0 and more=0, it must be processed"
4
5#      |XXXXXXXX|
6# |-------------|
7
8import os
9from addr import *
10from scapy.all import *
11
12pid=os.getpid()
13eid=pid & 0xffff
14payload="ABCDEFGHIJKLMNOP"
15dummy="0123456701234567"
16packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \
17    ICMPv6EchoRequest(id=eid, data=payload)
18frag=[]
19fid=pid & 0xffffffff
20frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=1)/dummy)
21frag.append(IPv6ExtHdrFragment(nh=58, id=fid)/str(packet)[40:64])
22eth=[]
23for f in frag:
24	pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f
25	eth.append(Ether(src=LOCAL_MAC, dst=REMOTE_MAC)/pkt)
26
27if os.fork() == 0:
28	time.sleep(1)
29	sendp(eth, iface=LOCAL_IF)
30	os._exit(0)
31
32ans=sniff(iface=LOCAL_IF, timeout=3, filter=
33    "ip6 and src "+REMOTE_ADDR6+" and dst "+LOCAL_ADDR6+" and icmp6")
34for a in ans:
35	if a and a.type == ETH_P_IPV6 and \
36	    ipv6nh[a.payload.nh] == 'ICMPv6' and \
37	    icmp6types[a.payload.payload.type] == 'Echo Reply':
38		id=a.payload.payload.id
39		print "id=%#x" % (id)
40		if id != eid:
41			print "WRONG ECHO REPLY ID"
42			exit(2)
43		data=a.payload.payload.data
44		print "payload=%s" % (data)
45		if data == payload:
46			exit(0)
47		print "PAYLOAD!=%s" % (payload)
48		exit(2)
49print "NO ECHO REPLY"
50exit(1)
51