#!/usr/bin/env python # -*- coding: utf-8 -*- """ Test Network Discovery ---------------------- The TD is on network 1 with sniffer1, network 2 has sniffer2, network 3 has sniffer3. Network 1 and 2 are connected with a router, network 2 and 3 are connected by a different router. """ import unittest from bacpypes.debugging import bacpypes_debugging, ModuleLogger, btox, xtob from bacpypes.comm import Client, Server, bind from bacpypes.pdu import PDU, Address, LocalBroadcast from bacpypes.vlan import Network from bacpypes.npdu import ( npdu_types, NPDU, WhoIsRouterToNetwork, IAmRouterToNetwork, ICouldBeRouterToNetwork, RejectMessageToNetwork, RouterBusyToNetwork, RouterAvailableToNetwork, RoutingTableEntry, InitializeRoutingTable, InitializeRoutingTableAck, EstablishConnectionToNetwork, DisconnectConnectionToNetwork, WhatIsNetworkNumber, NetworkNumberIs, ) from ..state_machine import match_pdu, StateMachineGroup, TrafficLog from ..time_machine import reset_time_machine, run_time_machine from .helpers import SnifferStateMachine, NetworkLayerStateMachine, RouterNode # some debugging _debug = 0 _log = ModuleLogger(globals()) # # TNetwork # @bacpypes_debugging class TNetwork(StateMachineGroup): def __init__(self): if _debug: TNetwork._debug("__init__") StateMachineGroup.__init__(self) # reset the time machine reset_time_machine() if _debug: TNetwork._debug(" - time machine reset") # create a traffic log self.traffic_log = TrafficLog() # implementation under test self.iut1 = RouterNode() # router from vlan1 to vlan2 self.iut2 = RouterNode() # router from vlan2 to vlan3 # make a little LAN self.vlan1 = Network(name="vlan1", broadcast_address=LocalBroadcast()) self.vlan1.traffic_log = self.traffic_log # test device self.td = NetworkLayerStateMachine("1", self.vlan1) self.append(self.td) # sniffer node self.sniffer1 = SnifferStateMachine("2", self.vlan1) self.append(self.sniffer1) # connect vlan1 to iut1 self.iut1.add_network("3", self.vlan1, 1) # make another little LAN self.vlan2 = Network(name="vlan2", broadcast_address=LocalBroadcast()) self.vlan2.traffic_log = self.traffic_log # sniffer node self.sniffer2 = SnifferStateMachine("4", self.vlan2) self.append(self.sniffer2) # connect vlan2 to both routers self.iut1.add_network("5", self.vlan2, 2) self.iut2.add_network("6", self.vlan2, 2) # make another little LAN self.vlan3 = Network(name="vlan3", broadcast_address=LocalBroadcast()) self.vlan3.traffic_log = self.traffic_log # sniffer node self.sniffer3 = SnifferStateMachine("7", self.vlan3) self.append(self.sniffer3) # connect vlan3 to the second router self.iut2.add_network("8", self.vlan3, 3) def run(self, time_limit=60.0): if _debug: TNetwork._debug("run %r", time_limit) # run the group super(TNetwork, self).run() # run it for some time run_time_machine(time_limit) if _debug: TNetwork._debug(" - time machine finished") # list the state machines which shows their current state for state_machine in self.state_machines: TNetwork._debug(" - machine: %r", state_machine) # each one has a list of sent/received pdus for direction, pdu in state_machine.transaction_log: TNetwork._debug(" %s %s", direction, str(pdu)) # traffic log has what was processed on each vlan self.traffic_log.dump(TNetwork._debug) # check for success all_success, some_failed = super(TNetwork, self).check_for_success() assert all_success @bacpypes_debugging class TestSimple(unittest.TestCase): def test_idle(self): """Test an idle network, nothing happens is success.""" if _debug: TestSimple._debug("test_idle") # create a network tnet = TNetwork() # all start states are successful tnet.td.start_state.success() tnet.sniffer1.start_state.success() tnet.sniffer2.start_state.success() tnet.sniffer3.start_state.success() # run the group tnet.run() @bacpypes_debugging class TestWhoIsRouterToNetwork(unittest.TestCase): def test_01(self): """Test broadcast for any router.""" if _debug: TestWhoIsRouterToNetwork._debug("test_01") # create a network tnet = TNetwork() # test device sends request, sees response tnet.td.start_state.doc("1-1-0") \ .send(WhoIsRouterToNetwork( destination=LocalBroadcast(), )).doc("1-1-1") \ .receive(IAmRouterToNetwork, iartnNetworkList=[2], ).doc("1-1-2") \ .success() # sniffer on network 1 sees the request and the response tnet.sniffer1.start_state.doc("1-2-0") \ .receive(PDU, pduData=xtob('01.80' # version, network layer '00' # message type, no network ) ).doc("1-2-1") \ .receive(PDU, pduData=xtob('01.80' # version, network layer '01 0002' # message type and network list ) ).doc("1-2-2") \ .success() # nothing received on network 2 tnet.sniffer2.start_state.doc("1-3-0") \ .timeout(3).doc("1-3-1") \ .success() # nothing received on network 3 tnet.sniffer3.start_state.doc("1-4-0") \ .timeout(3).doc("1-4-1") \ .success() # run the group tnet.run() def test_02(self): """Test broadcast for existing router.""" if _debug: TestWhoIsRouterToNetwork._debug("test_02") # create a network tnet = TNetwork() # test device sends request, receives response tnet.td.start_state.doc("2-1-0") \ .send(WhoIsRouterToNetwork(2, destination=LocalBroadcast(), )).doc("2-1-1") \ .receive(IAmRouterToNetwork, iartnNetworkList=[2], ).doc("2-1-2") \ .success() tnet.sniffer1.start_state.success() # nothing received on network 2 tnet.sniffer2.start_state.doc("2-2-0") \ .timeout(3).doc("2-2-1") \ .success() # nothing received on network 3 tnet.sniffer3.start_state.doc("2-3-0") \ .timeout(3).doc("2-3-1") \ .success() # run the group tnet.run() def test_03(self): """Test broadcast for a non-existent router.""" if _debug: TestWhoIsRouterToNetwork._debug("test_03") # create a network tnet = TNetwork() # send request, receive nothing back tnet.td.start_state.doc("3-1-0") \ .send(WhoIsRouterToNetwork(4, destination=LocalBroadcast(), )).doc("3-1-1") \ .timeout(3).doc("3-1-2") \ .success() # sniffer on network 1 sees the request tnet.sniffer1.start_state.doc("3-2-0") \ .receive(PDU, pduData=xtob('01.80' # version, network layer '00 0004' # message type and network ) ).doc("3-2-1") \ .success() # sniffer on network 2 sees request forwarded by router tnet.sniffer2.start_state.doc("3-3-0") \ .receive(PDU, pduData=xtob('01.88' # version, network layer, routed '0001 01 01' # snet/slen/sadr '00 0004' # message type and network ), ).doc("3-3-1") \ .success() tnet.sniffer3.start_state.doc("3-4-0") \ .receive(PDU, pduData=xtob('01.88' # version, network layer, routed '0001 01 01' # snet/slen/sadr '00 0004' # message type and network ), ).doc("3-4-1") \ .success() # run the group tnet.run()