mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-11-02 10:09:23 +01:00
e28243a584
Previously we had an ACD failure scenario where a new client forces its IP to create an IP conflict and an already-connected client detects the conflict and reacts. Now first test a scenario where a newly connecting IWD client runs ACD before setting its statically configured IP, detects a conflict and refuses to continue, then run the second scenario where the newly connecting DHCP-configured client ignores the conflict and starts ACD in defend-indefinitely mode and the older client in defent-once mode gives up its IP.
188 lines
7.9 KiB
Python
188 lines
7.9 KiB
Python
#!/usr/bin/python3
|
|
|
|
import unittest
|
|
import sys
|
|
|
|
sys.path.append('../util')
|
|
import iwd
|
|
from iwd import IWD
|
|
from iwd import PSKAgent
|
|
from iwd import NetworkType
|
|
from hostapd import HostapdCLI
|
|
import testutil
|
|
from config import ctx
|
|
import os
|
|
import socket
|
|
import gc
|
|
|
|
class Test(unittest.TestCase):
|
|
|
|
def test_connection_success(self):
|
|
# Use a non-default storage_dir for one of the instances, the default for the other one
|
|
iwd_main = IWD(True, iwd_storage_dir='/tmp/storage-main')
|
|
psk_agent_main = PSKAgent("secret123")
|
|
iwd_main.register_psk_agent(psk_agent_main)
|
|
dev1 = iwd_main.list_devices(1)[0]
|
|
|
|
ordered_network = dev1.get_ordered_network('ap-main')
|
|
|
|
self.assertEqual(ordered_network.type, NetworkType.psk)
|
|
|
|
condition = 'not obj.connected'
|
|
iwd_main.wait_for_object_condition(ordered_network.network_object, condition)
|
|
|
|
ordered_network.network_object.connect()
|
|
|
|
condition = 'obj.state == DeviceState.connected'
|
|
iwd_main.wait_for_object_condition(dev1, condition)
|
|
|
|
testutil.test_iface_operstate()
|
|
testutil.test_ifaces_connected()
|
|
|
|
testutil.test_ip_address_match(dev1.name, '192.168.1.10', 25)
|
|
testutil.test_ip_address_match(dev1.name, '3ffe:501:ffff:200::10', 80)
|
|
|
|
ifname = str(dev1.name)
|
|
# Since we're in an isolated VM with freshly created interfaces we know any routes
|
|
# will have been created by IWD and don't have to allow for pre-existing routes
|
|
# in the table.
|
|
# Flags: 1=RTF_UP, 2=RTF_GATEWAY
|
|
expected_routes4 = {
|
|
testutil.RouteInfo(gw=socket.inet_pton(socket.AF_INET, '192.168.1.3'),
|
|
flags=3, ifname=ifname),
|
|
testutil.RouteInfo(dst=socket.inet_pton(socket.AF_INET, '192.168.1.0'), plen=25,
|
|
flags=1, ifname=ifname)
|
|
}
|
|
expected_routes6 = {
|
|
testutil.RouteInfo(gw=socket.inet_pton(socket.AF_INET6, '3ffe:501:ffff:200::3'),
|
|
flags=3, ifname=ifname),
|
|
testutil.RouteInfo(dst=socket.inet_pton(socket.AF_INET6, '3ffe:501:ffff:200::'), plen=80,
|
|
flags=1, ifname=ifname),
|
|
}
|
|
|
|
self.maxDiff = None
|
|
self.assertEqual(expected_routes4, set(testutil.get_routes4(ifname)))
|
|
self.assertEqual(expected_routes6, set(testutil.get_routes6(ifname)))
|
|
|
|
rclog = open('/tmp/resolvconf.log', 'r')
|
|
entries = rclog.readlines()
|
|
rclog.close()
|
|
expected_rclog = ['-a %s.dns\n' % ifname, 'nameserver 192.168.1.4\n', 'nameserver 3ffe:501:ffff:200::4\n']
|
|
# Every resolvconf -a run overwrites the previous settings. Check the last three lines
|
|
# of the log since we care about the end result here.
|
|
self.assertEqual(expected_rclog, entries[-3:])
|
|
|
|
# Run our second client in a separate namespace to allow ACD (ARP) to
|
|
# work, and also be able to set identical IPs on both interfaces for
|
|
# the next part of this test.
|
|
ns0 = ctx.get_namespace('ns0')
|
|
|
|
iwd_ns0_1 = IWD(True, namespace=ns0, iwd_storage_dir='/tmp/storage-ns0-1')
|
|
psk_agent_ns0_1 = PSKAgent("secret123", namespace=ns0)
|
|
iwd_ns0_1.register_psk_agent(psk_agent_ns0_1)
|
|
dev2 = iwd_ns0_1.list_devices(1)[0]
|
|
|
|
ordered_network = dev2.get_ordered_network('ap-main')
|
|
|
|
condition = 'not obj.connected'
|
|
iwd_ns0_1.wait_for_object_condition(ordered_network.network_object, condition)
|
|
|
|
# Attempt a connection to the same AP that iwd_main is connected to
|
|
# using the same static config. The new client's ACD client should
|
|
# detect an IP conflict and not allow the device to reach the
|
|
# "connected" state although the DBus .Connect call will succeed.
|
|
ordered_network.network_object.connect()
|
|
self.assertEqual(dev2.state, iwd.DeviceState.connecting)
|
|
try:
|
|
# We should either stay in "connecting" indefinitely or move to
|
|
# "disconnecting"
|
|
condition = 'obj.state != DeviceState.connecting'
|
|
iwd_ns0_1.wait_for_object_condition(dev2, condition, max_wait=21)
|
|
self.assertEqual(dev2.state, iwd.DeviceState.disconnecting)
|
|
except TimeoutError:
|
|
dev2.disconnect()
|
|
|
|
iwd_ns0_1.unregister_psk_agent(psk_agent_ns0_1)
|
|
del dev2
|
|
# Note: if any references to iwd_ns0_1 are left, the "del iwd_ns0_1"
|
|
# will not kill the IWD process the iwd_ns0_2 initialization will raise
|
|
# an exception. The iwd_ns0_1.wait_for_object_condition() above
|
|
# creates a circular reference (which is not wrong in itself) and
|
|
# gc.collect() gets rid of it. The actual solution is to eventually
|
|
# avoid executing anything important in .__del__ (which is wrong.)
|
|
gc.collect()
|
|
del iwd_ns0_1
|
|
|
|
iwd_ns0_2 = IWD(True, namespace=ns0, iwd_storage_dir='/tmp/storage-ns0-2')
|
|
psk_agent_ns0_2 = PSKAgent("secret123", namespace=ns0)
|
|
iwd_ns0_2.register_psk_agent(psk_agent_ns0_2)
|
|
dev2 = iwd_ns0_2.list_devices(1)[0]
|
|
|
|
ordered_network = dev2.get_ordered_network('ap-main')
|
|
|
|
condition = 'not obj.connected'
|
|
iwd_ns0_2.wait_for_object_condition(ordered_network.network_object, condition)
|
|
|
|
# Connect to the same network from a dynamically configured client. We
|
|
# block ICMP pings so that the DHCP server can't confirm that
|
|
# 192.168.1.10 is in use by dev1 and if it assigns dev2 the lowest
|
|
# available address, that's going to be 192.168.1.10. We also keep the
|
|
# second client's netdev in a separate namespace so that the kernel
|
|
# lets us assign the same IP. dev1's ACD implementation should then
|
|
# stop using this address. Yes, a quite unrealistic scenario but this
|
|
# lets us test our reaction to a conflict appearing after successful
|
|
# initial setup.
|
|
os.system("echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all")
|
|
ordered_network.network_object.connect()
|
|
|
|
condition = 'obj.state == DeviceState.connected'
|
|
iwd_ns0_2.wait_for_object_condition(dev2, condition)
|
|
|
|
iwd_main.wait(1)
|
|
# Check dev1 is now disconnected or without its IPv4 address
|
|
if dev1.state == iwd.DeviceState.connected:
|
|
testutil.test_ip_address_match(dev1.name, None)
|
|
|
|
dev1.disconnect()
|
|
dev2.disconnect()
|
|
|
|
condition = 'not obj.connected'
|
|
iwd_main.wait_for_object_condition(ordered_network.network_object, condition)
|
|
|
|
iwd_main.unregister_psk_agent(psk_agent_main)
|
|
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
def remove_lease():
|
|
try:
|
|
os.remove('/tmp/dhcpd.leases')
|
|
os.remove('/tmp/dhcpd.leases~')
|
|
except:
|
|
pass
|
|
|
|
hapd = HostapdCLI('ap-main.conf')
|
|
# TODO: This could be moved into test-runner itself if other tests ever
|
|
# require this functionality (p2p, FILS, etc.). Since it's simple
|
|
# enough it can stay here for now.
|
|
ctx.start_process(['ip', 'addr','add', '192.168.1.1/255.255.128.0',
|
|
'dev', hapd.ifname]).wait()
|
|
ctx.start_process(['touch', '/tmp/dhcpd.leases']).wait()
|
|
cls.dhcpd_pid = ctx.start_process(['dhcpd', '-f', '-cf', '/tmp/dhcpd.conf',
|
|
'-lf', '/tmp/dhcpd.leases',
|
|
hapd.ifname], cleanup=remove_lease)
|
|
IWD.copy_to_storage('static.psk', '/tmp/storage-main', 'ap-main.psk')
|
|
IWD.copy_to_storage('static.psk', '/tmp/storage-ns0-1', 'ap-main.psk')
|
|
|
|
cls.orig_path = os.environ['PATH']
|
|
os.environ['PATH'] = '/tmp/test-bin:' + os.environ['PATH']
|
|
IWD.copy_to_storage('resolvconf', '/tmp/test-bin')
|
|
|
|
@classmethod
|
|
def tearDownClass(cls):
|
|
cls.dhcpd_pid.kill()
|
|
os.system('rm -rf /tmp/resolvconf.log /tmp/test-bin /tmp/storage-*')
|
|
os.environ['PATH'] = cls.orig_path
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(exit=True)
|