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# Copyright (c) 2005, Neville-Neil Consulting
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# Neither the name of Neville-Neil Consulting nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# File: $Id: connectortest.py,v 1.2 2006/08/01 13:35:58 gnn Exp $
#
# Author: George V. Neville-Neil
#
# Description: This module performs a self test on the Connector classes
# provided with PCS.
import unittest
import sys
#sys.path.insert(0, "..") # Look locally first
from socket import *
from pcs.packets.ethernet import ethernet
from pcs.packets.localhost import localhost
from pcs.packets.ipv4 import ipv4
from pcs.packets.icmpv4 import icmpv4
from pcs.packets.icmpv4 import icmpv4echo
from pcs import *
class pcapTestCase(unittest.TestCase):
def test_pcap_file(self):
file = PcapConnector("loopping.out")
packet = file.read()
ip = ipv4(packet[file.dloff:len(packet)])
assert (ip != None)
self.assertEqual(ip.version, 4,
"version not equal %d" % ip.version)
self.assertEqual(ip.hlen, 5, "hlen not equal %d" % ip.hlen)
self.assertEqual(ip.tos, 0, "tos not equal %d" % ip.tos)
self.assertEqual(ip.length, 84, "length not equal %d" % ip.length)
self.assertEqual(ip.id, 59067, "id not equal %d" % ip.id)
self.assertEqual(ip.flags, 0, "flags not equal %d" % ip.flags)
self.assertEqual(ip.offset, 0, "offset not equal %d" % ip.offset)
self.assertEqual(ip.ttl, 64, "ttl not equal %d" % ip.ttl)
self.assertEqual(ip.protocol, 1,
"protocol not equal %d" % ip.protocol)
self.assertEqual(ip.src, inet_atol("127.0.0.1"),
"src not equal %d" % ip.src)
self.assertEqual(ip.dst, inet_atol("127.0.0.1"),
"dst not equal %d" % ip.dst)
def test_pcap_live(self):
"""Test live injection and reception.
This test requires threads and must be run as root to succeed."""
import threading
# Create a vanilla ping packet
ip = ipv4()
ip.version = 4
ip.hlen = 5
ip.tos = 0
ip.length = 64
ip.id = 1
ip.flags = 0
ip.offset = 0
ip.ttl = 64
ip.protocol = IPPROTO_ICMP
ip.src = inet_atol("127.0.0.1")
ip.dst = inet_atol("127.0.0.1")
icmp = icmpv4()
icmp.type = 8
icmp.code = 0
echo = icmpv4echo()
echo.id = 32767
echo.seq = 1
lo = localhost()
lo.type = 2
packet = Chain([lo, ip, icmp, echo])
wfile = PcapConnector("lo0")
rfile = PcapConnector("lo0")
wfile.write(packet.bytes, 84)
got = ethernet(rfile.read())
ip = got.data
ping = ip.data
def test_pcap_write(self):
"""Test the underlying __compare__ functionality of the
packet. Two packets constructed from the same bytes should be
equal and two that are not should not be equal."""
from pcs.pcap import DLT_NULL
# Create a vanilla ping packet
ip = ipv4()
ip.version = 4
ip.hlen = 5
ip.tos = 0
ip.length = 64
ip.id = 1
ip.flags = 0
ip.offset = 0
ip.ttl = 64
ip.protocol = IPPROTO_ICMP
ip.src = inet_atol("127.0.0.1")
ip.dst = inet_atol("127.0.0.1")
icmp = icmpv4()
icmp.type = 8
icmp.code = 0
echo = icmpv4echo()
echo.id = 32767
echo.seq = 1
lo = localhost()
lo.type = 2
packet = Chain([lo, ip, icmp, echo])
outfile = PcapDumpConnector("pcaptest.dump", DLT_NULL)
outfile.write(packet.bytes)
outfile.close()
infile = PcapConnector("pcaptest.dump")
packet = infile.read()
ipnew = ipv4(packet[infile.dloff:len(packet)])
assert (ip != None)
assert (ipnew != None)
self.assertEqual(ip, ipnew, "packets should be equal but are not")
if __name__ == '__main__':
unittest.main()
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