238 lines
8.3 KiB
Python
238 lines
8.3 KiB
Python
#! /usr/bin/python3
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import unittest
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import os, sys
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sys.path.append('../util')
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from iwd import IWD
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from iwd import NetworkType, DeviceState
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from hwsim import Hwsim
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from hostapd import HostapdCLI
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import testutil
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class Test(unittest.TestCase):
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def connect(self, wd, device, hostapd):
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ordered_network = device.get_ordered_network('TestFT', full_scan=True)
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self.assertEqual(ordered_network.type, NetworkType.psk)
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condition = 'not obj.connected'
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wd.wait_for_object_condition(ordered_network.network_object, condition)
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device.connect_bssid(hostapd.bssid)
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condition = 'obj.state == DeviceState.connected'
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wd.wait_for_object_condition(device, condition)
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hostapd.wait_for_event('AP-STA-CONNECTED %s' % device.address)
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testutil.test_iface_operstate(device.name)
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testutil.test_ifaces_connected(hostapd.ifname, device.name)
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def verify_roam(self, wd, device, prev, new):
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from_condition = 'obj.state == DeviceState.roaming'
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to_condition = 'obj.state == DeviceState.connected'
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wd.wait_for_object_change(device, from_condition, to_condition)
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new.wait_for_event('AP-STA-CONNECTED %s' % device.address)
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testutil.test_iface_operstate(device.name)
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testutil.test_ifaces_connected(new.ifname, device.name)
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self.assertRaises(Exception, testutil.test_ifaces_connected,
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(prev.ifname, device.name, True, True))
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# FT-over-Air failure, should stay connected
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def test_ft_over_air_failure(self):
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self.rule2.enabled = True
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self.rule3.enabled = True
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device = self.wd.list_devices(1)[0]
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self.connect(self.wd, device, self.bss_hostapd[0])
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self.rule0.enabled = True
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# IWD should connect, then attempt a roam to BSS 1, which should fail...
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device.wait_for_event('ft-roam-failed', timeout=60)
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# ... but IWD should remain connected
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self.assertTrue(device.state == DeviceState.connected)
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self.rule0.enabled = False
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# IWD should then try BSS 2, and succeed
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device.wait_for_event('ft-roaming', timeout=60)
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self.verify_roam(self.wd, device, self.bss_hostapd[0], self.bss_hostapd[2])
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self.bss_hostapd[2].deauthenticate(device.address)
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# Tests that an associate even should cause a disconnect
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def test_ft_over_air_assoc_timeout(self):
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self.rule2.enabled = True
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self.rule3.enabled = True
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self.assoc_rule.enabled = True
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device = self.wd.list_devices(1)[0]
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self.connect(self.wd, device, self.bss_hostapd[0])
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device.wait_for_event('ft-roaming', timeout=60)
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condition = 'obj.state == DeviceState.disconnected'
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self.wd.wait_for_object_condition(device, condition)
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# FT-over-Air failure with Invalid PMKID, should reassociate
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def test_ft_over_air_fallback(self):
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self.rule_bss0.signal = -8000
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self.rule_bss0.enabled = True
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self.rule_bss1.signal = -7500
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self.rule_bss1.enabled = True
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self.rule_bss2.signal = -6000
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self.rule_bss2.enabled = True
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# This will cause this BSS to reject any FT roams as its unable to
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# get keys from other APs
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self.bss_hostapd[2].set_value('ft_psk_generate_local', '0')
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self.bss_hostapd[2].reload()
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device = self.wd.list_devices(1)[0]
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self.connect(self.wd, device, self.bss_hostapd[0])
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# IWD should connect, then attempt a roam to BSS 1, which should
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# fail and cause a fallback to reassociation
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device.wait_for_event('ft-fallback-to-reassoc', timeout=60)
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device.wait_for_event('roaming', timeout=60)
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self.verify_roam(self.wd, device, self.bss_hostapd[0], self.bss_hostapd[2])
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# Trigger another roam
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self.rule_bss2.signal = -8000
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device.wait_for_event('ft-roaming', timeout=60)
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# Ensure an FT roam back to a properly configured AP works.
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self.verify_roam(self.wd, device, self.bss_hostapd[2], self.bss_hostapd[1])
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self.bss_hostapd[1].deauthenticate(device.address)
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condition = 'obj.state == DeviceState.disconnected'
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self.wd.wait_for_object_condition(device, condition)
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# FT-over-Air failure with Invalid PMKID. The ranking is such that other
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# FT candidates are available so it should FT elsewhere rather than
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# retry with reassociation
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def test_ft_over_air_fallback_retry_ft(self):
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self.rule_bss0.signal = -8000
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self.rule_bss0.enabled = True
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self.rule_bss1.signal = -7300
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self.rule_bss1.enabled = True
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self.rule_bss2.signal = -7100
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self.rule_bss2.enabled = True
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# This will cause this BSS to reject any FT roams as its unable to
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# get keys from other APs
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self.bss_hostapd[2].set_value('ft_psk_generate_local', '0')
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self.bss_hostapd[2].reload()
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device = self.wd.list_devices(1)[0]
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self.connect(self.wd, device, self.bss_hostapd[0])
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# IWD should connect, then attempt a roam to BSS 1, which should
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# fail and cause the rank to be re-computed. This should then put
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# bss 1 as the next candidate (since the FT factor is removed)
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device.wait_for_event('ft-fallback-to-reassoc', timeout=60)
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device.wait_for_event('ft-roaming', timeout=60)
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self.verify_roam(self.wd, device, self.bss_hostapd[0], self.bss_hostapd[1])
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self.bss_hostapd[1].deauthenticate(device.address)
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condition = 'obj.state == DeviceState.disconnected'
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self.wd.wait_for_object_condition(device, condition)
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def setUp(self):
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self.wd = IWD(True)
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def tearDown(self):
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os.system('ip link set "' + self.bss_hostapd[0].ifname + '" down')
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os.system('ip link set "' + self.bss_hostapd[1].ifname + '" down')
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os.system('ip link set "' + self.bss_hostapd[0].ifname + '" up')
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os.system('ip link set "' + self.bss_hostapd[1].ifname + '" up')
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self.rule0.enabled = False
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self.rule1.enabled = False
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self.rule2.enabled = False
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self.rule3.enabled = False
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self.rule_bss0.enabled = False
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self.rule_bss1.enabled = False
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self.rule_bss2.enabled = False
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self.assoc_rule.enabled = False
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for hapd in self.bss_hostapd:
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hapd.default()
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self.wd.stop()
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self.wd = None
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@classmethod
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def setUpClass(cls):
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hwsim = Hwsim()
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IWD.copy_to_storage('TestFT.psk')
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cls.bss_hostapd = [ HostapdCLI(config='ft-psk-ccmp-1.conf'),
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HostapdCLI(config='ft-psk-ccmp-2.conf'),
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HostapdCLI(config='ft-psk-ccmp-3.conf') ]
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cls.bss_hostapd[0].set_address('12:00:00:00:00:01')
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cls.bss_hostapd[1].set_address('12:00:00:00:00:02')
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cls.bss_hostapd[2].set_address('12:00:00:00:00:03')
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# Drop Authenticate frames
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cls.rule0 = hwsim.rules.create()
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cls.rule0.source = hwsim.get_radio('rad1').addresses[0]
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cls.rule0.prefix = 'b0'
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cls.rule0.drop = True
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# Drop Associate frames
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cls.assoc_rule = hwsim.rules.create()
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cls.assoc_rule.prefix = '20'
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cls.assoc_rule.drop = True
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# Drop Action frames
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cls.rule1 = hwsim.rules.create()
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cls.rule1.bidirectional = True
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cls.rule1.prefix = 'd0'
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cls.rule1.drop = True
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# Causes IWD to immediately roam away from BSS 0
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cls.rule2 = hwsim.rules.create()
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cls.rule2.source = hwsim.get_radio('rad0').addresses[0]
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cls.rule2.signal = -8000
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# Causes IWD to first prefer BSS 1 to roam, then BSS 2.
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cls.rule3 = hwsim.rules.create()
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cls.rule3.source = hwsim.get_radio('rad2').addresses[0]
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cls.rule3.signal = -7000
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cls.rule_bss0 = hwsim.rules.create()
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cls.rule_bss0.source = hwsim.get_radio('rad0').addresses[0]
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cls.rule_bss1 = hwsim.rules.create()
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cls.rule_bss1.source = hwsim.get_radio('rad1').addresses[0]
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cls.rule_bss2 = hwsim.rules.create()
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cls.rule_bss2.source = hwsim.get_radio('rad2').addresses[0]
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HostapdCLI.group_neighbors(*cls.bss_hostapd)
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@classmethod
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def tearDownClass(cls):
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IWD.clear_storage()
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cls.bss_hostapd = None
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cls.rule0.remove()
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cls.rule1.remove()
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cls.rule2.remove()
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cls.rule3.remove()
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cls.assoc_rule.remove()
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if __name__ == '__main__':
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unittest.main(exit=True)
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