def unpack_nlri(cls, data, rd):
ospf_type = None
proto_id = unpack('!B', data[0:1])[0]
if proto_id not in PROTO_CODES.keys():
raise Exception('Protocol-ID {} is not valid'.format(proto_id))
domain = unpack('!Q', data[1:9])[0]
tlvs = data[9:]
while tlvs:
tlv_type, tlv_length = unpack('!HH', tlvs[:4])
if tlv_type == 256:
values = tlvs[4:4 + tlv_length]
local_node = []
while values:
# Unpack Local Node Descriptor Sub-TLVs
# We pass proto_id as TLV interpretation
# follows IGP type
node, left = NodeDescriptor.unpack(values, proto_id)
local_node.append(node)
if left == values:
raise RuntimeError("sub-calls should consume data")
values = left
tlvs = tlvs[4 + tlv_length:]
continue
if tlv_type == 264:
values = tlvs[4:4 + tlv_length]
ospf_type = OspfRoute.unpack(values)
tlvs = tlvs[4 + tlv_length:]
if tlv_type == 265:
values = tlvs[4:4 + tlv_length]
prefix = IpReach.unpack(values, 4)
tlvs = tlvs[4 + tlv_length:]
return cls(
domain=domain,
proto_id=proto_id,
packed=data,
local_node=local_node,
ospf_type=ospf_type,
prefix=prefix,
route_d=rd,
)
def unpack_nlri (cls, data, rd):
ospf_type = None
proto_id = unpack('!B',data[0:1])[0]
if proto_id not in PROTO_CODES.keys():
raise Exception('Protocol-ID {} is not valid'.format(proto_id))
domain = unpack('!Q',data[1:9])[0]
tlvs = data[9:]
while tlvs:
tlv_type, tlv_length = unpack('!HH', tlvs[:4])
if tlv_type == 256:
values = tlvs[4: 4 + tlv_length]
local_node = []
while values:
# Unpack Local Node Descriptor Sub-TLVs
# We pass proto_id as TLV interpretation
# follows IGP type
node, left = NodeDescriptor.unpack(values, proto_id)
local_node.append(node)
if left == tlvs:
raise RuntimeError("sub-calls should consume data")
values = left
tlvs = tlvs[4 + tlv_length:]
continue
if tlv_type == 264:
values = tlvs[4: 4 + tlv_length]
ospf_type = OspfRoute.unpack(values)
tlvs = tlvs[4 + tlv_length:]
if tlv_type == 265:
values = tlvs[4: 4 + tlv_length]
prefix = IpReach.unpack(values)
tlvs = tlvs[4 + tlv_length:]
return cls(
domain=domain,proto_id=proto_id,packed=data,
local_node=local_node,ospf_type=ospf_type,
prefix=prefix,route_d=rd
)
def test_ospf_route_type(self,):
data = b'\x04'
tlv = OspfRoute.unpack(data)
self.assertEqual(tlv.json(), '"ospf-route-type": 4')
def test_ospf_route_type(self, ):
data = b'\x04'
tlv = OspfRoute.unpack(data)
self.assertEqual(tlv.json(), '"ospf-route-type": 4')
