def generate_map_request(eid):
"""Create a LISP Map-Request packet as a Scapy object
Args:
:param eid: A string used as the EID record
Returns:
:return : returns a Scapy Map-Request packet object
"""
sport1 = random.randint(60000, 65000)
sport2 = random.randint(60000, 65000)
rnonce = random.randint(0, 2**63)
itr_rloc = [lisp.LISP_AFI_Address(address=src_rloc, afi=1)]
record = [
lisp.LISP_MapRequestRecord(request_address=eid,
request_afi=1,
eid_mask_len=32)
]
packet = lisp.Ether(dst=dst_mac, src=src_mac)
packet /= lisp.IP(dst=dst_rloc, src=src_rloc)
packet /= lisp.UDP(sport=sport1, dport=4342)
packet /= lisp.LISP_Encapsulated_Control_Message(ptype=8)
packet /= lisp.IP(dst=eid, src=src_eid)
packet /= lisp.UDP(sport=sport2, dport=4342)
packet /= lisp.LISP_MapRequest(nonce=rnonce,
request_afi=1,
address=src_eid,
ptype=1,
itr_rloc_records=itr_rloc,
request_records=record)
return packet
def generate_map_register(eid, rloc, key_id):
"""Create a LISP Map-Register packet as a Scapy object
Args:
:param eid: A string used as the EID record
:param rloc: A string used as the RLOC
:param key_id: Integer value specifying the authentication type
Returns:
:return : returns a Scapy Map-Request packet object
"""
sport1 = random.randint(60000, 65000)
rnonce = random.randint(0, 2 ** 63)
rlocs = [
lisp.LISP_Locator_Record(
priority=1,
weight=1,
multicast_priority=255,
multicast_weight=0,
reserved=0,
locator_flags=5,
locator_afi=1,
address=rloc,
)
]
record = [
lisp.LISP_MapRecord(
record_ttl=1440,
locator_count=1,
eid_prefix_length=32,
action=0,
authoritative=1,
reserved=0,
map_version_number=0,
record_afi=1,
record_address=eid,
locators=rlocs,
)
]
packet = lisp.Ether(dst=dst_mac, src=src_mac)
packet /= lisp.IP(dst=dst_rloc, src=src_rloc)
packet /= lisp.UDP(sport=sport1, dport=4342)
packet /= lisp.LISP_MapRegister(
ptype=3,
nonce=rnonce,
register_flags=10,
additional_register_flags=1,
register_count=1,
key_id=key_id,
register_records=record,
xtr_id_low=netaddr.IPAddress(eid),
)
return packet