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iwd/autotests/testDPP/pkex_test.py
James Prestwood f9a55e3728 auto-t: fix several DPP tests after station state changes
After the station state changes in DPP setting autoconnect=True was
causing DPP to stop prior to being able to scan for the network.
Instead we can start autoconnect earlier so we aren't toggling the
property while DPP is running.
2024-07-24 15:26:57 -05:00

336 lines
12 KiB
Python

#!/usr/bin/python3
import unittest
import sys
sys.path.append('../util')
from iwd import IWD, SharedCodeAgent, DeviceState
from iwd import DeviceProvisioning
from wpas import Wpas
from hostapd import HostapdCLI
from hwsim import Hwsim
from config import ctx
from time import time
import os
class Test(unittest.TestCase):
def start_wpas_pkex(self, code, curve=None, **kwargs):
self.wpas.dpp_bootstrap_gen(type='pkex', curve=curve)
self.wpas.dpp_pkex_add(code=code, **kwargs)
if kwargs.get('role', 'configurator') == 'configurator':
self.wpas.dpp_configurator_create()
self.wpas.dpp_listen(2437)
def stop_wpas_pkex(self):
self.wpas.dpp_pkex_remove()
self.wpas.dpp_stop_listen()
self.wpas.dpp_configurator_remove()
def start_iwd_pkex_configurator(self, device, agent=False, profile='ssidCCMP.psk'):
self.hapd.reload()
self.hapd.wait_for_event('AP-ENABLED')
IWD.copy_to_storage(profile)
device.autoconnect = True
condition = 'obj.state == DeviceState.connected'
self.wd.wait_for_object_condition(device, condition)
if agent:
self.agent = SharedCodeAgent(codes = {"test": "secret123"})
device.dpp_pkex_start_configurator(self.agent.path)
else:
device.dpp_pkex_configure_enrollee('secret123', identifier="test")
#
# WPA Supplicant has awful handling of retransmissions and no-ACK
# conditions. It only handles retransmitting the exchange request when
# there is no-ACK, which makes zero sense since its a broadcast...
#
# So, really, testing against wpa_supplicant is fragile and dependent on
# how the scheduling works out. If IWD doesn't ACK due to being on the
# next frequency or in between offchannel requests wpa_supplicant gets
# into a state where it thinks a PKEX session has been started (having
# received the exchange request) but will only accept commit-reveal
# frames. IWD is unaware because it never got a response so it keeps
# sending exchange requests which are ignored.
#
# Nevertheless we should still test against wpa_supplicant for
# compatibility so attempt to detect this case and restart the
# wpa_supplicant configurator.
#
def restart_wpas_if_needed(self):
i = 0
while i < 10:
data = self.wpas.wait_for_event("DPP-RX")
self.assertIn("type=7", data)
data = self.wpas.wait_for_event("DPP-TX")
self.assertIn("type=8", data)
data = self.wpas.wait_for_event("DPP-TX-STATUS")
if "result=no-ACK" in data:
self.stop_wpas_pkex()
self.start_wpas_pkex('secret123', identifier="test")
else:
return
i += 1
raise Exception("wpa_supplicant could not complete PKEX after 10 retries")
def test_pkex_iwd_as_enrollee(self):
self.start_wpas_pkex('secret123', identifier="test")
self.device[0].dpp_pkex_enroll('secret123', identifier="test")
self.restart_wpas_if_needed()
self.wpas.wait_for_event("DPP-AUTH-SUCCESS")
def test_pkex_iwd_as_enrollee_retransmit(self):
self.rule_reveal_req.enabled = True
self.start_wpas_pkex('secret123', identifier="test")
self.device[0].dpp_pkex_enroll('secret123', identifier="test")
self.restart_wpas_if_needed()
self.wpas.wait_for_event("DPP-AUTH-SUCCESS")
def test_pkex_unsupported_version(self):
self.start_wpas_pkex('secret123', identifier="test", version=2)
now = time()
self.device[0].dpp_pkex_enroll('secret123', identifier="test")
condition = "obj.started == False"
self.wd.wait_for_object_condition(self.device[0]._sc_device_provisioning,
condition, max_wait=125)
# Check the enrollee stopped after 2 minutes
elapsed = time() - now
self.assertLess(elapsed, 125)
def test_pkex_configurator_timeout(self):
self.start_iwd_pkex_configurator(self.device[0])
now = time()
condition = "obj.started == False"
self.wd.wait_for_object_condition(self.device[0]._sc_device_provisioning,
condition, max_wait=125)
# Check the enrollee stopped after 2 minutes
elapsed = time() - now
self.assertLess(elapsed, 125)
def test_pkex_iwd_as_configurator(self):
self.start_iwd_pkex_configurator(self.device[0])
self.start_wpas_pkex('secret123', identifier="test", initiator=True,
role='enrollee')
self.wpas.wait_for_event("DPP-AUTH-SUCCESS")
self.wpas.wait_for_event("DPP-CONF-RECEIVED")
def test_pkex_iwd_as_configurator_retransmit(self):
self.rule_xchg_resp.enabled = True
self.rule_reveal_resp.enabled = True
self.start_iwd_pkex_configurator(self.device[0])
self.start_wpas_pkex('secret123', identifier="test", initiator=True,
role='enrollee')
self.wpas.wait_for_event("DPP-AUTH-SUCCESS")
self.wpas.wait_for_event("DPP-CONF-RECEIVED")
def test_pkex_iwd_as_configurator_bad_group(self):
self.start_iwd_pkex_configurator(self.device[0])
self.start_wpas_pkex('secret123', identifier="test", initiator=True,
role='enrollee', curve='P-384')
self.wpas.wait_for_event(f"DPP-RX src={self.device[0].address} freq=2437 type=8")
self.wpas.wait_for_event("DPP-FAIL")
def test_pkex_iwd_to_iwd(self):
self.start_iwd_pkex_configurator(self.device[0])
self.device[1].autoconnect = True
self.device[1].dpp_pkex_enroll('secret123', identifier="test")
condition = 'obj.state == DeviceState.connected'
self.wd.wait_for_object_condition(self.device[1], condition)
# Check additional settings were carried over
with open('/tmp/ns0/ssidCCMP.psk', 'r') as f:
settings = f.read()
self.assertIn("SendHostname=true", settings)
def test_pkex_configurator_with_agent(self):
self.start_iwd_pkex_configurator(self.device[0], agent=True)
self.device[1].autoconnect = True
self.device[1].dpp_pkex_enroll('secret123', identifier="test")
condition = 'obj.state == DeviceState.connected'
self.wd.wait_for_object_condition(self.device[1], condition)
self.agent = None
def test_existing_network(self):
self.hapd.reload()
self.hapd.wait_for_event('AP-ENABLED')
IWD.copy_to_storage("existingProfile.psk", "/tmp/ns0/", "ssidCCMP.psk")
# Scan first so a network object exists, and its a known network
self.device[1].scan()
self.wd.wait_for_object_condition(self.device[1], 'obj.scanning == True')
self.wd.wait_for_object_condition(self.device[1], 'obj.scanning == False')
self.start_iwd_pkex_configurator(self.device[0])
self.device[1].autoconnect = False
self.device[1].dpp_pkex_enroll('secret123', identifier="test")
condition = 'obj.state == DeviceState.connected'
self.wd.wait_for_object_condition(self.device[1], condition)
# Check additional settings were carried over
with open('/tmp/ns0/ssidCCMP.psk', 'r') as f:
settings = f.read()
self.assertIn("SendHostname=true", settings)
def test_existing_incorrect_profile(self):
self.hapd.reload()
self.hapd.wait_for_event('AP-ENABLED')
IWD.copy_to_storage("existingProfile.psk", "/tmp/ns0/", "ssidCCMP.psk")
# Start connecting
self.device[1].autoconnect = True
self.wd.wait_for_object_condition(self.device[1], 'obj.state == DeviceState.connecting')
# We should be able to start DPP despite the connecting state
self.device[1].dpp_pkex_enroll('secret123', identifier="test")
self.start_iwd_pkex_configurator(self.device[0])
self.assertEqual(self.device[1].state, DeviceState.disconnected)
condition = 'obj.state == DeviceState.connected'
self.wd.wait_for_object_condition(self.device[1], condition)
def test_existing_hidden_network(self):
self.hapd_hidden.reload()
self.hapd_hidden.wait_for_event('AP-ENABLED')
IWD.copy_to_storage("existingProfile.psk", "/tmp/ns0/", "ssidHidden.psk")
# Scan first so a network object exists, and its a known network
self.device[1].scan()
self.wd.wait_for_object_condition(self.device[1], 'obj.scanning == True')
self.wd.wait_for_object_condition(self.device[1], 'obj.scanning == False')
self.start_iwd_pkex_configurator(self.device[0], profile='ssidHidden.psk')
self.device[1].autoconnect = False
self.device[1].dpp_pkex_enroll('secret123', identifier="test")
condition = 'obj.state == DeviceState.connected'
self.wd.wait_for_object_condition(self.device[1], condition)
# Check additional settings were carried over
with open('/tmp/ns0/ssidHidden.psk', 'r') as f:
settings = f.read()
self.assertIn("Hidden=true", settings)
def test_hidden_network(self):
self.hapd_hidden.reload()
self.hapd_hidden.wait_for_event('AP-ENABLED')
self.start_iwd_pkex_configurator(self.device[0], profile='ssidHidden.psk')
self.device[1].autoconnect = False
self.device[1].dpp_pkex_enroll('secret123', identifier="test")
condition = 'obj.state == DeviceState.connected'
self.wd.wait_for_object_condition(self.device[1], condition)
# Check additional settings were carried over
with open('/tmp/ns0/ssidHidden.psk', 'r') as f:
settings = f.read()
self.assertIn("Hidden=true", settings)
def setUp(self):
ns0 = ctx.get_namespace('ns0')
self.wpas = Wpas('wpas.conf')
self.wd = IWD(True)
self.wd_ns0 = IWD(True, iwd_storage_dir='/tmp/ns0', namespace=ns0)
self.device = []
self.device.append(self.wd.list_devices(1)[0])
self.device.append(self.wd_ns0.list_devices(1)[0])
self.hapd = HostapdCLI('hostapd.conf')
self.hapd.disable()
self.hapd_hidden = HostapdCLI('ssidHidden.conf')
self.hapd_hidden.disable()
self.hwsim = Hwsim()
self.rule_xchg_resp = self.hwsim.rules.create()
self.rule_xchg_resp.prefix = 'd0'
self.rule_xchg_resp.match_offset = 24
self.rule_xchg_resp.match = '04 09 50 6f 9a 1a 01 08'
self.rule_xchg_resp.match_times = 1
self.rule_xchg_resp.drop = True
self.rule_reveal_resp = self.hwsim.rules.create()
self.rule_reveal_resp.prefix = 'd0'
self.rule_reveal_resp.match_offset = 24
self.rule_reveal_resp.match = '04 09 50 6f 9a 1a 01 0a'
self.rule_reveal_resp.match_times = 1
self.rule_reveal_resp.drop = True
self.rule_reveal_req = self.hwsim.rules.create()
self.rule_reveal_req.prefix = 'd0'
self.rule_reveal_req.match_offset = 24
self.rule_reveal_req.match = '04 09 50 6f 9a 1a 01 09'
self.rule_reveal_req.match_times = 1
self.rule_reveal_req.drop = True
def tearDown(self):
# Tests end in various states, don't fail when tearing down.
try:
self.device[0].disconnect()
self.device[0].dpp_pkex_stop()
self.device[1].disconnect()
self.device[1].dpp_pkex_stop()
except:
pass
self.wpas.dpp_configurator_remove()
self.wpas.clean_up()
self.wd = None
self.wd_ns0 = None
self.device = None
self.wpas = None
self.hapd = None
self.rule_xchg_resp = None
IWD.clear_storage()
IWD.clear_storage('/tmp/ns0')
@classmethod
def setUpClass(cls):
pass
@classmethod
def tearDownClass(cls):
pass
if __name__ == '__main__':
unittest.main(exit=True)