3 # Copyright (c) 2016 Cisco and/or its affiliates.
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at:
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
16 """Traffic script for IPv4 sweep ping."""
21 logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
22 from resources.libraries.python.PacketVerifier import RxQueue, TxQueue,\
23 create_gratuitous_arp_request, checksum_equal
24 from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
25 from scapy.layers.inet import IP, ICMP
26 from scapy.all import Ether, Raw
30 # start_size - start size of the ICMPv4 echo data
31 # end_size - end size of the ICMPv4 echo data
32 # step - increment step
33 args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip',
34 'start_size', 'end_size', 'step'])
36 rxq = RxQueue(args.get_arg('rx_if'))
37 txq = TxQueue(args.get_arg('tx_if'))
39 src_mac = args.get_arg('src_mac')
40 dst_mac = args.get_arg('dst_mac')
41 src_ip = args.get_arg('src_ip')
42 dst_ip = args.get_arg('dst_ip')
43 start_size = int(args.get_arg('start_size'))
44 end_size = int(args.get_arg('end_size'))
45 step = int(args.get_arg('step'))
47 # generate some random data buffer
48 data = bytearray(os.urandom(end_size))
51 pkt_send = create_gratuitous_arp_request(src_mac, src_ip)
52 sent_packets.append(pkt_send)
55 # send ICMP echo request with incremented data length and receive ICMP
57 for echo_seq in range(start_size, end_size+1, step):
58 pkt_send = (Ether(src=src_mac, dst=dst_mac) /
59 IP(src=src_ip, dst=dst_ip) /
60 ICMP(id=echo_id, seq=echo_seq) /
61 Raw(load=data[0:echo_seq]))
62 sent_packets.append(pkt_send)
65 ether = rxq.recv(ignore=sent_packets)
68 'ICMP echo reply seq {0} Rx timeout'.format(echo_seq))
70 if not ether.haslayer(IP):
72 'Unexpected packet with no IPv4 received {0}'.format(
77 if not ipv4.haslayer(ICMP):
79 'Unexpected packet with no ICMP received {0}'.format(
84 if icmpv4.id != echo_id or icmpv4.seq != echo_seq:
86 'Invalid ICMP echo reply received ID {0} seq {1} should be ' \
87 'ID {2} seq {3}, {0}'.format(icmpv4.id, icmpv4.seq, echo_id,
90 chksum = icmpv4.chksum
92 tmp = ICMP(str(icmpv4))
93 if not checksum_equal(tmp.chksum, chksum):
95 'Invalid checksum {0} should be {1}'.format(chksum, tmp.chksum))
98 load = icmpv4['Raw'].load
101 if load != data[0:echo_seq]:
103 'Received ICMP payload does not match sent payload')
107 if __name__ == "__main__":