mirror of
https://github.com/JoelBender/bacpypes
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273 lines
8.0 KiB
Python
273 lines
8.0 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Test Network Discovery
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----------------------
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The TD is on network 1 with sniffer1, network 2 has sniffer2, network 3 has
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sniffer3. All three networks are connected to one IUT router.
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"""
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import unittest
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from bacpypes.debugging import bacpypes_debugging, ModuleLogger, btox, xtob
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from bacpypes.comm import Client, Server, bind
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from bacpypes.pdu import PDU, Address, LocalBroadcast
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from bacpypes.vlan import Network
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from bacpypes.npdu import (
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npdu_types, NPDU,
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WhoIsRouterToNetwork, IAmRouterToNetwork, ICouldBeRouterToNetwork,
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RejectMessageToNetwork, RouterBusyToNetwork, RouterAvailableToNetwork,
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RoutingTableEntry, InitializeRoutingTable, InitializeRoutingTableAck,
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EstablishConnectionToNetwork, DisconnectConnectionToNetwork,
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WhatIsNetworkNumber, NetworkNumberIs,
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)
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from ..state_machine import match_pdu, StateMachineGroup
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from ..time_machine import reset_time_machine, run_time_machine
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from .helpers import SnifferStateMachine, NetworkLayerStateMachine, RouterNode
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# some debugging
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_debug = 0
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_log = ModuleLogger(globals())
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#
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# TNetwork
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#
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@bacpypes_debugging
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class TNetwork(StateMachineGroup):
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def __init__(self):
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if _debug: TNetwork._debug("__init__")
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StateMachineGroup.__init__(self)
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# reset the time machine
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reset_time_machine()
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if _debug: TNetwork._debug(" - time machine reset")
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# implementation under test
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self.iut = RouterNode()
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# make a little LAN
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self.vlan1 = Network(name="vlan1", broadcast_address=LocalBroadcast())
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# test device
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self.td = NetworkLayerStateMachine("1", self.vlan1)
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self.append(self.td)
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# sniffer node
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self.sniffer1 = SnifferStateMachine("2", self.vlan1)
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self.append(self.sniffer1)
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# add the network
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self.iut.add_network("3", self.vlan1, 1)
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# make another little LAN
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self.vlan2 = Network(name="vlan2", broadcast_address=LocalBroadcast())
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# sniffer node
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self.sniffer2 = SnifferStateMachine("4", self.vlan2)
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self.append(self.sniffer2)
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# add the network
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self.iut.add_network("5", self.vlan2, 2)
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# make another little LAN
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self.vlan3 = Network(name="vlan3", broadcast_address=LocalBroadcast())
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# sniffer node
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self.sniffer3 = SnifferStateMachine("6", self.vlan3)
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self.append(self.sniffer3)
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# add the network
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self.iut.add_network("7", self.vlan3, 3)
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def run(self, time_limit=60.0):
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if _debug: TNetwork._debug("run %r", time_limit)
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# run the group
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super(TNetwork, self).run()
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# run it for some time
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run_time_machine(time_limit)
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if _debug:
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TNetwork._debug(" - time machine finished")
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for state_machine in self.state_machines:
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TNetwork._debug(" - machine: %r", state_machine)
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for direction, pdu in state_machine.transaction_log:
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TNetwork._debug(" %s %s", direction, str(pdu))
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# check for success
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all_success, some_failed = super(TNetwork, self).check_for_success()
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assert all_success
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@bacpypes_debugging
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class TestSimple(unittest.TestCase):
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def test_idle(self):
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"""Test an idle network, nothing happens is success."""
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if _debug: TestSimple._debug("test_idle")
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# create a network
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tnet = TNetwork()
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# all start states are successful
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tnet.td.start_state.success()
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tnet.sniffer1.start_state.success()
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tnet.sniffer2.start_state.success()
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tnet.sniffer3.start_state.success()
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# run the group
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tnet.run()
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@bacpypes_debugging
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class TestWhoIsRouterToNetwork(unittest.TestCase):
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def test_01(self):
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"""Test broadcast for any router."""
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if _debug: TestWhoIsRouterToNetwork._debug("test_01")
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# create a network
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tnet = TNetwork()
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# test device sends request, sees response
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tnet.td.start_state.doc("1-1-0") \
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.send(WhoIsRouterToNetwork(
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destination=LocalBroadcast(),
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)).doc("1-1-1") \
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.receive(IAmRouterToNetwork,
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iartnNetworkList=[2, 3],
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).doc("1-1-2") \
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.success()
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# sniffer on network 1 sees the request and the response
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tnet.sniffer1.start_state.doc("1-2-0") \
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.receive(PDU,
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pduData=xtob('01.80' # version, network layer
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'00' # message type, no network
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)
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).doc("1-2-1") \
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.receive(PDU,
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pduData=xtob('01.80' # version, network layer
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'01 0002 0003' # message type and network list
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)
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).doc("1-2-2") \
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.success()
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# nothing received on network 2
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tnet.sniffer2.start_state.doc("1-3-0") \
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.timeout(3).doc("1-3-1") \
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.success()
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# nothing received on network 3
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tnet.sniffer3.start_state.doc("1-4-0") \
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.timeout(3).doc("1-4-1") \
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.success()
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# run the group
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tnet.run()
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def test_02(self):
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"""Test broadcast for existing router."""
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if _debug: TestWhoIsRouterToNetwork._debug("test_02")
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# create a network
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tnet = TNetwork()
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# all start states are successful
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tnet.td.start_state.doc("2-1-0") \
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.send(WhoIsRouterToNetwork(2,
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destination=LocalBroadcast(),
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)).doc("2-1-1") \
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.receive(IAmRouterToNetwork,
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iartnNetworkList=[2],
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).doc("2-1-2") \
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.success()
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tnet.sniffer1.start_state.success()
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# nothing received on network 2
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tnet.sniffer2.start_state.doc("2-2-0") \
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.timeout(3).doc("2-2-1") \
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.success()
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tnet.sniffer3.start_state.success()
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# run the group
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tnet.run()
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def test_03(self):
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"""Test broadcast for a non-existent router."""
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if _debug: TestWhoIsRouterToNetwork._debug("test_03")
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# create a network
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tnet = TNetwork()
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# send request, receive nothing back
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tnet.td.start_state.doc("3-1-0") \
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.send(WhoIsRouterToNetwork(4,
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destination=LocalBroadcast(),
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)).doc("3-1-1") \
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.timeout(3).doc("3-1-2") \
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.success()
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# sniffer on network 1 sees the request
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tnet.sniffer1.start_state.doc("3-2-0") \
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.receive(PDU,
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pduData=xtob('01.80' # version, network layer
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'00 0004' # message type and network
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)
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).doc("3-2-1") \
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.success()
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# sniffer on network 2 sees request forwarded by router
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tnet.sniffer2.start_state.doc("3-3-0") \
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.receive(PDU,
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pduData=xtob('01.88' # version, network layer, routed
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'0001 01 01' # snet/slen/sadr
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'00 0004' # message type and network
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),
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).doc("3-3-1") \
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.success()
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tnet.sniffer3.start_state.success()
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# run the group
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tnet.run()
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def test_04(self):
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"""Test broadcast for a router to the network it is on."""
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if _debug: TestWhoIsRouterToNetwork._debug("test_02")
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# create a network
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tnet = TNetwork()
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# request router to network 1 on network 1, no response
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tnet.td.start_state.doc("4-1-0") \
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.send(WhoIsRouterToNetwork(1,
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destination=LocalBroadcast(),
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)).doc("4-1-1") \
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.timeout(3).doc("4-1-2") \
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.success()
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tnet.sniffer1.start_state.success()
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# nothing received on network 2
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tnet.sniffer2.start_state.doc("4-2-0") \
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.timeout(3).doc("4-2-1") \
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.success()
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tnet.sniffer3.start_state.success()
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# run the group
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tnet.run()
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