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# Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (https://tfs.etsi.org/)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import print_function
import logging
from common.proto.l3_centralizedattackdetector_pb2 import (
Empty
)
from common.proto.l3_attackmitigator_pb2_grpc import (
L3AttackmitigatorServicer,
)
from common.proto.context_pb2 import (
Service, ServiceId, ServiceConfig, ServiceTypeEnum, ServiceStatusEnum, ServiceStatus, Context, ContextId, Uuid,
Timestamp, ConfigRule, ConfigRule_Custom, ConfigActionEnum, Device, DeviceId, DeviceConfig,
DeviceOperationalStatusEnum, DeviceDriverEnum, EndPoint, Link, LinkId, EndPoint, EndPointId, Topology, TopologyId
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)
from common.proto.context_pb2_grpc import (
ContextServiceStub
)
from common.proto.service_pb2_grpc import (
ServiceServiceStub
)
from datetime import datetime
import grpc
LOGGER = logging.getLogger(__name__)
CONTEXT_CHANNEL = "192.168.165.78:1010"
SERVICE_CHANNEL = "192.168.165.78:3030"
class l3_attackmitigatorServiceServicerImpl(L3AttackmitigatorServicer):
def GetNewService(self, service_id):
service = Service()
service_id_obj = self.GenerateServiceId(service_id)
service.service_id.CopyFrom(service_id_obj)
service.service_type = ServiceTypeEnum.SERVICETYPE_L3NM
service_status = ServiceStatus()
service_status.service_status = ServiceStatusEnum.SERVICESTATUS_ACTIVE
service.service_status.CopyFrom(service_status)
timestamp = Timestamp()
timestamp.timestamp = datetime.timestamp(datetime.now())
service.timestamp.CopyFrom(timestamp)
return service
def GetNewContext(self, service_id):
context = Context()
context_id = ContextId()
uuid = Uuid()
uuid.uuid = service_id
context_id.context_uuid.CopyFrom(uuid)
context.context_id.CopyFrom(context_id)
return context
def GetNewDevice(self, service_id):
device = Device()
device_id = DeviceId()
uuid = Uuid()
uuid.uuid = service_id
device_id.device_uuid.CopyFrom(uuid)
device.device_type="test"
device.device_id.CopyFrom(device_id)
device.device_operational_status = DeviceOperationalStatusEnum.DEVICEOPERATIONALSTATUS_ENABLED
return device
def GetNewLink(self, service_id):
link = Link()
link_id = LinkId()
uuid = Uuid()
uuid.uuid = service_id
link_id.link_uuid.CopyFrom(uuid)
link.link_id.CopyFrom(link_id)
return link
def GetNewTopology(self,context_id, device_id, link_id):
topology = Topology()
topology_id = TopologyId()
topology_id.context_id.CopyFrom(context_id)
uuid = Uuid()
uuid.uuid = "test_crypto"
topology_id.topology_uuid.CopyFrom(uuid)
topology.topology_id.CopyFrom(topology_id)
topology.device_ids.extend([device_id])
topology.link_ids.extend([link_id])
return topology
def GetNewEndpoint(self, topology_id, device_id, uuid_name):
endpoint = EndPoint()
endpoint_id = EndPointId()
endpoint_id.topology_id.CopyFrom(topology_id)
endpoint_id.device_id.CopyFrom(device_id)
uuid = Uuid()
uuid.uuid = uuid_name
endpoint_id.endpoint_uuid.CopyFrom(uuid)
endpoint.endpoint_id.CopyFrom(endpoint_id)
endpoint.endpoint_type = "test"
return endpoint
def __init__(self):
LOGGER.debug("Creating Servicer...")
self.last_value = -1
self.last_tag = 0
"""
context = self.GetNewContext("test_crypto")
print(context, flush=True)
print(self.SetContext(context))
service = self.GetNewService("test_crypto")
print("This is the new service", self.CreateService(service), flush = True)
ip_o = "127.0.0.1"
ip_d = "127.0.0.2"
port_o = "123"
port_d = "124"
service_id = self.GenerateServiceId("test_crypto")
config_rule = self.GetConfigRule(ip_o, ip_d, port_o, port_d)
service = self.GetService(service_id)
print("Service obtained from id", service, flush=True)
config_rule = self.GetConfigRule(ip_o, ip_d, port_o, port_d)
#service_config = service.service_config
#service_config.append(config_rule)
service_config = ServiceConfig()
service_config.config_rules.extend([config_rule])
service.service_config.CopyFrom(service_config)
device = self.GetNewDevice("test_crypto")
print("New device", device, flush=True)
device_id = self.SetDevice(device)
link = self.GetNewLink("test_crypto")
print("New link", link, flush=True)
link_id = self.SetLink(link)
topology = self.GetNewTopology(context.context_id, device.device_id, link.link_id)
print("New topology", topology, flush=True)
topology_id = self.SetTopology(topology)
endpoint = self.GetNewEndpoint(topology.topology_id, device.device_id, "test_crypto")
print("New endpoint", endpoint, flush=True)
link.link_endpoint_ids.extend([endpoint.endpoint_id])
self.SetLink(link)
print("Service with new rule", service, flush=True)
self.UpdateService(service)
service2 = self.GetService(service_id)
print("Service obtained from id after updating", service2, flush=True)
"""
def GenerateRuleValue(self, ip_o, ip_d, port_o, port_d):
value = {
'ipv4:source-address': ip_o,
'ipv4:destination-address': ip_d,
'transport:source-port': port_o,
'transport:destination-port': port_d,
'forwarding-action': 'DROP',
}
return value
def GetConfigRule(self, ip_o, ip_d, port_o, port_d):
config_rule = ConfigRule()
config_rule_custom = ConfigRule_Custom()
config_rule.action = ConfigActionEnum.CONFIGACTION_SET
config_rule_custom.resource_key = 'test'
config_rule_custom.resource_value = str(self.GenerateRuleValue(ip_o, ip_d, port_o, port_d))
config_rule.custom.CopyFrom(config_rule_custom)
return config_rule
def GenerateServiceId(self, service_id):
service_id_obj = ServiceId()
context_id = ContextId()
uuid = Uuid()
uuid.uuid = service_id
context_id.context_uuid.CopyFrom(uuid)
service_id_obj.context_id.CopyFrom(context_id)
service_id_obj.service_uuid.CopyFrom(uuid)
return service_id_obj
def SendOutput(self, request, context):
# SEND CONFIDENCE TO MITIGATION SERVER
print("Server received mitigation values...", request.confidence, flush=True)
last_value = request.confidence
last_tag = request.tag
ip_o = request.ip_o
ip_d = request.ip_d
port_o = request.port_o
port_d = request.port_d
service_id = self.GenerateServiceId(request.service_id)
config_rule = self.GetConfigRule(ip_o, ip_d, port_o, port_d)
service = GetService(service_id)
print(service)
#service.config_rules.append(config_rule)
#UpdateService(service)
# RETURN OK TO THE CALLER
return Empty(
message=f"OK, received values: {last_tag} with confidence {last_value}."
)
def SetDevice(self, device):
with grpc.insecure_channel(CONTEXT_CHANNEL) as channel:
stub = ContextServiceStub(channel)
return stub.SetDevice(device)
def SetLink(self, link):
with grpc.insecure_channel(CONTEXT_CHANNEL) as channel:
stub = ContextServiceStub(channel)
return stub.SetLink(link)
def SetTopology(self, link):
with grpc.insecure_channel(CONTEXT_CHANNEL) as channel:
stub = ContextServiceStub(channel)
return stub.SetTopology(link)
def GetService(self, service_id):
with grpc.insecure_channel(CONTEXT_CHANNEL) as channel:
stub = ContextServiceStub(channel)
return stub.GetService(service_id)
def SetContext(self, context):
with grpc.insecure_channel(CONTEXT_CHANNEL) as channel:
stub = ContextServiceStub(channel)
return stub.SetContext(context)
def UpdateService(self, service):
with grpc.insecure_channel(SERVICE_CHANNEL) as channel:
stub = ServiceServiceStub(channel)
stub.UpdateService(service)
def CreateService(self, service):
with grpc.insecure_channel(SERVICE_CHANNEL) as channel:
stub = ServiceServiceStub(channel)
stub.CreateService(service)
def GetMitigation(self, request, context):
# GET OR PERFORM MITIGATION STRATEGY
logging.debug("")
print("Returing mitigation strategy...")
k = self.last_value * 2
return Empty(
message=f"Mitigation with double confidence = {k}"
)