def test_icmpv4(self):
# create one packet, copy its bytes, then compare their fields
icmp = icmpv4()
assert icmp != None
icmp.type = 8
icmp.code = 0
# Create a packet to compare against
icmpnew = icmpv4()
icmpnew.decode(icmp.bytes)
self.assertEqual(icmp.bytes, icmpnew.bytes, "bytes not equal")
self.assertEqual(icmpnew.type, 8, "type not equal %d" % icmp.type)
self.assertEqual(icmpnew.code, 0, "code not equal %d" % icmp.code)
def test_icmpv4(self):
# create one packet, copy its bytes, then compare their fields
icmp = icmpv4()
assert (icmp != None)
icmp.type = 8
icmp.code = 0
# Create a packet to compare against
icmpnew = icmpv4()
icmpnew.decode(icmp.bytes)
self.assertEqual(icmp.bytes, icmpnew.bytes, "bytes not equal")
self.assertEqual(icmpnew.type, 8, "type not equal %d" % icmp.type)
self.assertEqual(icmpnew.code, 0, "code not equal %d" % icmp.code)
def test_icmpv4_ping(self):
import os
uname = os.uname()[0]
if uname == "FreeBSD":
devname = "edsc0"
elif uname == "Linux":
devname = "lo"
elif uname == "Darwin":
devname = "en0"
else:
print "unknown host os %s" % uname
return
e = ethernet()
e.type = 0x0800
e.src = "\x00\x00\x00\x00\x00\x00"
e.dst = "\xff\xff\xff\xff\xff\xff"
e.type = 0x0800
ip = ipv4()
ip.version = 4
ip.hlen = 5
ip.tos = 0
ip.length = 28
ip.id = 1234
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
icmp.cksum = 0
echo = icmpv4echo()
echo.id = 37123
echo.sequence = 0
ip.len = len(ip.bytes) + len(icmp.bytes) + len(echo.bytes)
packet = Chain([e, ip, icmp, echo])
packet.calc_checksums()
packet.encode()
input = PcapConnector(devname)
input.setfilter("icmp")
output = PcapConnector(devname)
assert ip != None
# XXX The use of IP triggers a bpf header format bug if used
# with loopback device on FreeBSD, so we use edsc(4) there.
n_out = output.write(packet.bytes, 42)
assert n_out == 42
packet_in = input.read()
assert n_out == len(packet_in)
def main():
from optparse import OptionParser
parser = OptionParser()
parser.add_option("-c", "--count",
dest="count", default=1,
help="Stop after sending (and recieving) count ECHO_RESPONSE packets..")
parser.add_option("-D", "--dont_fragment",
dest="df", default=False,
help="Set the Don't Fragment bit.")
parser.add_option("-s", "--ip_source",
dest="ip_source", default=None,
help="The IP source address.")
parser.add_option("-d", "--ip_dest",
dest="ip_dest", default=None,
help="The IP destination address.")
parser.add_option("-I", "--ether_iface",
dest="ether_iface", default=None,
help="The name of the source interface.")
parser.add_option("-e", "--ether_source",
dest="ether_source", default=None,
help="The host Ethernet source address.")
parser.add_option("-g", "--ether_dest",
dest="ether_dest", default=None,
help="The gateway Ethernet destination address.")
(options, args) = parser.parse_args()
c = ethernet(src=ether_atob(options.ether_source), \
dst=ether_atob(options.ether_dest)) / \
ipv4(ttl=64, src=inet_atol(options.ip_source), \
dst=inet_atol(options.ip_dest)) / \
icmpv4(type=8) / icmpv4echo(id=12345) / payload(payload="foobar")
c.calc_lengths()
#
# Increment ICMP echo sequence number with each iteration.
#
output = PcapConnector(options.ether_iface)
ip = c.packets[1]
echo = c.packets[3]
count = int(options.count)
while (count > 0):
c.calc_checksums()
c.encode()
out = output.write(c.bytes, len(c.bytes))
# packet = input.read()
# print packet
sleep(1)
count -= 1
ip.id += 1
echo.sequence += 1
def test_icmpv4_ping(self):
import os
uname = os.uname()[0]
if uname == "FreeBSD":
devname = "edsc0"
elif uname == "Linux":
devname = "lo"
elif uname == "Darwin":
devname = "en0"
else:
print "unknown host os %s" % uname
return
e = ethernet()
e.type = 0x0800
e.src = "\x00\x00\x00\x00\x00\x00"
e.dst = "\xff\xff\xff\xff\xff\xff"
e.type = 0x0800
ip = ipv4()
ip.version = 4
ip.hlen = 5
ip.tos = 0
ip.length = 28
ip.id = 1234
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
icmp.cksum = 0
echo = icmpv4echo()
echo.id = 37123
echo.sequence = 0
ip.len = len(ip.bytes) + len(icmp.bytes) + len(echo.bytes)
packet = Chain([e, ip, icmp, echo])
packet.calc_checksums()
packet.encode()
input = PcapConnector(devname)
input.setfilter("icmp")
output = PcapConnector(devname)
assert (ip != None)
# XXX The use of IP triggers a bpf header format bug if used
# with loopback device on FreeBSD, so we use edsc(4) there.
n_out = output.write(packet.bytes, 42)
assert (n_out == 42)
packet_in = input.read()
assert (n_out == len(packet_in))
