import sys
import ipaddress
+from scapy.layers.l2 import Ether, Dot1Q
from scapy.layers.inet import ICMP, IP
-from scapy.layers.l2 import Ether
-from scapy.layers.l2 import Dot1Q
-from scapy.layers.inet6 import ICMPv6EchoRequest
-from scapy.layers.inet6 import IPv6
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6ND_NS
from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
the other one. Dot1q or Dot1ad tagging of the ethernet frame can be set.
"""
args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip'],
- ['encaps', 'vlan1', 'vlan2'])
+ ['encaps', 'vlan1', 'vlan2', 'encaps_rx',
+ 'vlan1_rx', 'vlan2_rx'])
src_mac = args.get_arg('src_mac')
dst_mac = args.get_arg('dst_mac')
encaps = args.get_arg('encaps')
vlan1 = args.get_arg('vlan1')
vlan2 = args.get_arg('vlan2')
+ encaps_rx = args.get_arg('encaps_rx')
+ vlan1_rx = args.get_arg('vlan1_rx')
+ vlan2_rx = args.get_arg('vlan2_rx')
tx_if = args.get_arg('tx_if')
rx_if = args.get_arg('rx_if')
pkt_raw = (Ether(src=src_mac, dst=dst_mac) /
IP(src=src_ip, dst=dst_ip) /
ICMP())
- ip_format = 'IP'
- icmp_format = 'ICMP'
+ ip_format = IP
+ icmp_format = ICMP
elif valid_ipv6(src_ip) and valid_ipv6(dst_ip):
if encaps == 'Dot1q':
pkt_raw = (Ether(src=src_mac, dst=dst_mac) /
pkt_raw = (Ether(src=src_mac, dst=dst_mac) /
IPv6(src=src_ip, dst=dst_ip) /
ICMPv6EchoRequest())
- ip_format = 'IPv6'
- icmp_format = 'ICMPv6EchoRequest'
+ ip_format = IPv6
+ icmp_format = ICMPv6EchoRequest
else:
raise ValueError("IP(s) not in correct format")
sent_packets.append(pkt_raw)
txq.send(pkt_raw)
- ether = rxq.recv(2)
+ # Receive ICMP / ICMPv6 echo reply
+ while True:
+ ether = rxq.recv(2,)
+ if ether is None:
+ raise RuntimeError('ICMP echo Rx timeout')
- # Check whether received packet contains layers Ether, IP and ICMP
- if ether is None:
- raise RuntimeError('ICMP echo Rx timeout')
+ if ether.haslayer(ICMPv6ND_NS):
+ # read another packet in the queue if the current one is ICMPv6ND_NS
+ continue
+ else:
+ # otherwise process the current packet
+ break
+
+ # Check whether received packet contains layers IP/IPv6 and
+ # ICMP/ICMPv6EchoRequest
+ if encaps_rx:
+ if encaps_rx == 'Dot1q':
+ if not vlan1_rx:
+ vlan1_rx = vlan1
+ if not ether.haslayer(Dot1Q):
+ raise RuntimeError('Not VLAN tagged Eth frame received:\n{0}'.
+ format(ether.__repr__()))
+ elif ether[Dot1Q].vlan != int(vlan1_rx):
+ raise RuntimeError('Ethernet frame with wrong VLAN tag ({}) '
+ 'received ({} expected):\n{}'.
+ format(ether[Dot1Q].vlan, vlan1_rx,
+ ether.__repr__()))
+ elif encaps_rx == 'Dot1ad':
+ if not vlan1_rx:
+ vlan1_rx = vlan1
+ if not vlan2_rx:
+ vlan2_rx = vlan2
+ # TODO
+ raise RuntimeError('Encapsulation {0} not implemented yet.'.
+ format(encaps_rx))
+ else:
+ raise RuntimeError('Unsupported encapsulation expected: {0}'.
+ format(encaps_rx))
if not ether.haslayer(ip_format):
- raise RuntimeError('Not an IP packet received {0}'
- .format(ether.__repr__()))
+ raise RuntimeError('Not an IP/IPv6 packet received:\n{0}'.
+ format(ether.__repr__()))
if not ether.haslayer(icmp_format):
- raise RuntimeError('Not an ICMP packet received {0}'
- .format(ether.__repr__()))
+ raise RuntimeError('Not an ICMP/ICMPv6EchoRequest packet received:\n'
+ '{0}'.format(ether.__repr__()))
sys.exit(0)
+
if __name__ == "__main__":
main()