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hostap/tests/hwsim/test_ap_vlan.py
Michael Braun ee2b0d19f5 tests: Verify group encryption is set up for VLANs early 
Check that there are no unencrypted frames when using hostapd with VLANs
and WPA before the first station connects to the VLAN.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
2015-10-06 01:25:39 +03:00

467 lines
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Python
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#!/usr/bin/python
#
# Test cases for AP VLAN
# Copyright (c) 2013-2014, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import time
import subprocess
import logging
logger = logging.getLogger(__name__)
try:
import netifaces
netifaces_imported = True
except ImportError:
netifaces_imported = False
import hwsim_utils
import hostapd
from utils import iface_is_in_bridge, HwsimSkip
import os
from tshark import run_tshark
def test_ap_vlan_open(dev, apdev):
"""AP VLAN with open network"""
params = { "ssid": "test-vlan-open",
"dynamic_vlan": "1",
"accept_mac_file": "hostapd.accept" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
dev[1].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
dev[2].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan1")
hwsim_utils.test_connectivity_iface(dev[1], hapd, "brvlan2")
hwsim_utils.test_connectivity(dev[2], hapd)
def test_ap_vlan_file_open(dev, apdev):
"""AP VLAN with open network and vlan_file mapping"""
params = { "ssid": "test-vlan-open",
"dynamic_vlan": "1",
"vlan_file": "hostapd.vlan",
"accept_mac_file": "hostapd.accept" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
dev[1].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
dev[2].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan1")
hwsim_utils.test_connectivity_iface(dev[1], hapd, "brvlan2")
hwsim_utils.test_connectivity(dev[2], hapd)
def test_ap_vlan_wpa2(dev, apdev):
"""AP VLAN with WPA2-PSK"""
params = hostapd.wpa2_params(ssid="test-vlan",
passphrase="12345678")
params['dynamic_vlan'] = "1";
params['accept_mac_file'] = "hostapd.accept";
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("test-vlan", psk="12345678", scan_freq="2412")
dev[1].connect("test-vlan", psk="12345678", scan_freq="2412")
dev[2].connect("test-vlan", psk="12345678", scan_freq="2412")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan1")
hwsim_utils.test_connectivity_iface(dev[1], hapd, "brvlan2")
hwsim_utils.test_connectivity(dev[2], hapd)
def test_ap_vlan_wpa2_radius(dev, apdev):
"""AP VLAN with WPA2-Enterprise and RADIUS attributes"""
params = hostapd.wpa2_eap_params(ssid="test-vlan")
params['dynamic_vlan'] = "1";
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("test-vlan", key_mgmt="WPA-EAP", eap="PAX",
identity="vlan1",
password_hex="0123456789abcdef0123456789abcdef",
scan_freq="2412")
dev[1].connect("test-vlan", key_mgmt="WPA-EAP", eap="PAX",
identity="vlan2",
password_hex="0123456789abcdef0123456789abcdef",
scan_freq="2412")
dev[2].connect("test-vlan", key_mgmt="WPA-EAP", eap="PAX",
identity="pax.user@example.com",
password_hex="0123456789abcdef0123456789abcdef",
scan_freq="2412")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan1")
hwsim_utils.test_connectivity_iface(dev[1], hapd, "brvlan2")
hwsim_utils.test_connectivity(dev[2], hapd)
def test_ap_vlan_wpa2_radius_id_change(dev, apdev):
"""AP VLAN with WPA2-Enterprise and RADIUS attributes changing VLANID"""
as_params = { "ssid": "as",
"beacon_int": "2000",
"radius_server_clients": "auth_serv/radius_clients.conf",
"radius_server_auth_port": '18128',
"eap_server": "1",
"eap_user_file": "auth_serv/eap_user.conf",
"ca_cert": "auth_serv/ca.pem",
"server_cert": "auth_serv/server.pem",
"private_key": "auth_serv/server.key" }
authserv = hostapd.add_ap(apdev[1]['ifname'], as_params)
params = hostapd.wpa2_eap_params(ssid="test-vlan")
params['dynamic_vlan'] = "1";
params['auth_server_port'] = "18128"
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("test-vlan", key_mgmt="WPA-EAP", eap="PAX",
identity="vlan1",
password_hex="0123456789abcdef0123456789abcdef",
scan_freq="2412")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan1")
logger.info("VLAN-ID -> 2")
authserv.disable()
authserv.set('eap_user_file', "auth_serv/eap_user_vlan.conf")
authserv.enable()
dev[0].dump_monitor()
dev[0].request("REAUTHENTICATE")
ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=15)
if ev is None:
raise Exception("EAP reauthentication timed out")
ev = dev[0].wait_event(["WPA: Key negotiation completed"], timeout=5)
if ev is None:
raise Exception("4-way handshake after reauthentication timed out")
state = dev[0].get_status_field('wpa_state')
if state != "COMPLETED":
raise Exception("Unexpected state after reauth: " + state)
sta = hapd.get_sta(dev[0].own_addr())
if 'vlan_id' not in sta:
raise Exception("No VLAN ID in STA info")
if sta['vlan_id'] != '2':
raise Exception("Unexpected VLAN ID: " + sta['vlan_id'])
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan2")
logger.info("VLAN-ID -> 1")
time.sleep(1)
authserv.disable()
authserv.set('eap_user_file', "auth_serv/eap_user.conf")
authserv.enable()
dev[0].dump_monitor()
dev[0].request("REAUTHENTICATE")
ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=15)
if ev is None:
raise Exception("EAP reauthentication timed out")
ev = dev[0].wait_event(["WPA: Key negotiation completed"], timeout=5)
if ev is None:
raise Exception("4-way handshake after reauthentication timed out")
state = dev[0].get_status_field('wpa_state')
if state != "COMPLETED":
raise Exception("Unexpected state after reauth: " + state)
sta = hapd.get_sta(dev[0].own_addr())
if 'vlan_id' not in sta:
raise Exception("No VLAN ID in STA info")
if sta['vlan_id'] != '1':
raise Exception("Unexpected VLAN ID: " + sta['vlan_id'])
time.sleep(0.2)
try:
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan1")
except Exception, e:
# It is possible for new bridge setup to not be ready immediately, so
# try again to avoid reporting issues related to that.
logger.info("First VLAN-ID 1 data test failed - try again")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan1")
def test_ap_vlan_wpa2_radius_required(dev, apdev):
"""AP VLAN with WPA2-Enterprise and RADIUS attributes required"""
params = hostapd.wpa2_eap_params(ssid="test-vlan")
params['dynamic_vlan'] = "2";
hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("test-vlan", key_mgmt="WPA-EAP", eap="PAX",
identity="vlan1",
password_hex="0123456789abcdef0123456789abcdef",
scan_freq="2412")
dev[2].connect("test-vlan", key_mgmt="WPA-EAP", eap="PAX",
identity="pax.user@example.com",
password_hex="0123456789abcdef0123456789abcdef",
scan_freq="2412", wait_connect=False)
ev = dev[2].wait_event(["CTRL-EVENT-CONNECTED",
"CTRL-EVENT-DISCONNECTED"], timeout=20)
if ev is None:
raise Exception("Timeout on connection attempt")
if "CTRL-EVENT-CONNECTED" in ev:
raise Exception("Unexpected success without tunnel parameters")
def test_ap_vlan_tagged(dev, apdev):
"""AP VLAN with tagged interface"""
params = { "ssid": "test-vlan-open",
"dynamic_vlan": "1",
"vlan_tagged_interface": "lo",
"accept_mac_file": "hostapd.accept" }
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
dev[0].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
dev[1].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
dev[2].connect("test-vlan-open", key_mgmt="NONE", scan_freq="2412")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brlo.1")
hwsim_utils.test_connectivity_iface(dev[1], hapd, "brlo.2")
hwsim_utils.test_connectivity(dev[2], hapd)
def ap_vlan_iface_cleanup_multibss_cleanup():
subprocess.call(['ifconfig', 'dummy0', 'down'],
stderr=open('/dev/null', 'w'))
ifnames = [ 'wlan3.1', 'wlan3.2', 'wlan3-2.1', 'wlan3-2.2', 'dummy0.2',
'dummy0.1', 'dummy0', 'brvlan1', 'brvlan2' ]
for ifname in ifnames:
subprocess.call(['ip', 'link', 'del', ifname],
stderr=open('/dev/null', 'w'))
def ap_vlan_iface_test_and_prepare_environ():
ifaces = netifaces.interfaces()
if "dummy0" in ifaces:
raise Exception("dummy0 already exists before")
ifaces = netifaces.interfaces()
if "dummy0.1" in ifaces:
raise Exception("dummy0.1 already exists before")
subprocess.call(['ip', 'link', 'add', 'dummy0', 'type', 'dummy'])
subprocess.call(['ifconfig', 'dummy0', 'up'])
ifaces = netifaces.interfaces()
if not("dummy0" in ifaces):
raise HwsimSkip("failed to add dummy0 - missing kernel config DUMMY ?")
subprocess.call(['ip', 'link', 'add', 'link', 'dummy0', 'name', 'dummy0.1',
'type', 'vlan', 'id', '1'])
ifaces = netifaces.interfaces()
if not("dummy0.1" in ifaces):
raise HwsimSkip("failed to add dummy0.1 - missing kernel config VLAN_8021Q ?")
subprocess.call(['ip', 'link', 'del', 'dummy0.1'])
ifaces = netifaces.interfaces()
if "dummy0.1" in ifaces:
raise Exception("dummy0.1 was not removed before testing")
def test_ap_vlan_iface_cleanup_multibss(dev, apdev):
"""AP VLAN operation in multi-BSS multi-VLAN case"""
# AP VLAN with WPA2-Enterprise and RADIUS attributes changing VLANID
# check that multiple bss do not interfere with each other with respect
# to deletion of bridge and tagged interface.
if not netifaces_imported:
raise HwsimSkip("python module netifaces not available")
try:
ap_vlan_iface_cleanup_multibss_cleanup()
ap_vlan_iface_test_and_prepare_environ()
as_params = { "ssid": "as",
"beacon_int": "2000",
"radius_server_clients": "auth_serv/radius_clients.conf",
"radius_server_auth_port": '18128',
"eap_server": "1",
"eap_user_file": "auth_serv/eap_user.conf",
"ca_cert": "auth_serv/ca.pem",
"server_cert": "auth_serv/server.pem",
"private_key": "auth_serv/server.key",
"vlan_naming": "1" }
authserv = hostapd.add_ap(apdev[1]['ifname'], as_params)
ifname = apdev[0]['ifname']
# start the actual test
hostapd.add_iface(ifname, 'multi-bss-iface.conf')
hapd = hostapd.Hostapd(ifname)
hapd1 = hostapd.Hostapd("wlan3-2", 1)
hapd1.enable()
ifaces = netifaces.interfaces()
if "brvlan1" in ifaces:
raise Exception("bridge brvlan1 already exists before")
if "brvlan2" in ifaces:
raise Exception("bridge brvlan2 already exists before")
dev[0].connect("bss-1", key_mgmt="WPA-EAP", eap="PAX",
identity="vlan1",
password_hex="0123456789abcdef0123456789abcdef",
scan_freq="2412")
ifaces = netifaces.interfaces()
if not("brvlan1" in ifaces):
raise Exception("bridge brvlan1 was not created")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan1")
if not iface_is_in_bridge("brvlan1", "dummy0.1"):
raise Exception("dummy0.1 not in brvlan1")
dev[1].connect("bss-2", key_mgmt="WPA-EAP", eap="PAX",
identity="vlan1",
password_hex="0123456789abcdef0123456789abcdef",
scan_freq="2412")
hwsim_utils.test_connectivity_iface(dev[1], hapd1, "brvlan1")
if not iface_is_in_bridge("brvlan1", "dummy0.1"):
raise Exception("dummy0.1 not in brvlan1")
authserv.disable()
authserv.set('eap_user_file', "auth_serv/eap_user_vlan.conf")
authserv.enable()
logger.info("wlan0 -> VLAN 2")
dev[0].dump_monitor()
dev[0].request("REAUTHENTICATE")
ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=15)
if ev is None:
raise Exception("EAP reauthentication timed out")
ev = dev[0].wait_event(["WPA: Key negotiation completed"], timeout=5)
if ev is None:
raise Exception("4-way handshake after reauthentication timed out")
state = dev[0].get_status_field('wpa_state')
if state != "COMPLETED":
raise Exception("Unexpected state after reauth: " + state)
ifaces = netifaces.interfaces()
if not ("brvlan1" in ifaces):
raise Exception("bridge brvlan1 has been removed too early")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan2",
max_tries=5)
if not iface_is_in_bridge("brvlan2", "dummy0.2"):
raise Exception("dummy0.2 not in brvlan2")
logger.info("test wlan1 == VLAN 1")
hwsim_utils.test_connectivity_iface(dev[1], hapd1, "brvlan1")
if not iface_is_in_bridge("brvlan1", "dummy0.1"):
raise Exception("dummy0.1 not in brvlan1")
logger.info("wlan1 -> VLAN 2")
dev[1].dump_monitor()
dev[1].request("REAUTHENTICATE")
ev = dev[1].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=15)
if ev is None:
raise Exception("EAP reauthentication timed out")
ev = dev[1].wait_event(["WPA: Key negotiation completed"], timeout=5)
if ev is None:
raise Exception("4-way handshake after reauthentication timed out")
state = dev[1].get_status_field('wpa_state')
if state != "COMPLETED":
raise Exception("Unexpected state after reauth: " + state)
# it can take some time for data connectivity to be updated
hwsim_utils.test_connectivity_iface(dev[1], hapd1, "brvlan2",
max_tries=5)
logger.info("test wlan0 == VLAN 2")
hwsim_utils.test_connectivity_iface(dev[0], hapd, "brvlan2")
if not iface_is_in_bridge("brvlan2", "dummy0.2"):
raise Exception("dummy0.2 not in brvlan2")
ifaces = netifaces.interfaces()
if "brvlan1" in ifaces:
raise Exception("bridge brvlan1 has not been cleaned up")
# disconnect dev0 first to test a corner case
dev[0].request("DISCONNECT")
dev[0].wait_disconnected()
dev[1].request("DISCONNECT")
dev[1].wait_disconnected()
# station removal needs some time
for i in range(5):
time.sleep(1)
ifaces = netifaces.interfaces()
if "brvlan2" not in ifaces:
break
ifaces = netifaces.interfaces()
if "brvlan2" in ifaces:
raise Exception("bridge brvlan2 has not been cleaned up")
hapd.request("DISABLE")
finally:
ap_vlan_iface_cleanup_multibss_cleanup()
def test_ap_vlan_without_station(dev, apdev, p):
"""AP VLAN with WPA2-PSK and no station"""
try:
subprocess.call(['brctl', 'addbr', 'brvlan1'])
subprocess.call(['brctl', 'setfd', 'brvlan1', '0'])
subprocess.call(['ifconfig', 'brvlan1', 'up'])
# use a passphrase wlantest does not know, so it cannot
# inject decrypted frames into pcap
params = hostapd.wpa2_params(ssid="test-vlan",
passphrase="12345678x")
params['dynamic_vlan'] = "1";
params['vlan_file'] = 'hostapd.wlan3.vlan'
params['accept_mac_file'] = "hostapd.accept";
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
# inject some traffic
sa = hapd.own_addr()
da = "ff:ff:ff:ff:ff:00"
hapd.request('DATA_TEST_CONFIG 1 ifname=brvlan1')
hapd.request('DATA_TEST_TX {} {} 0'.format(da, sa))
hapd.request('DATA_TEST_CONFIG 0')
time.sleep(.1)
dev[0].connect("test-vlan", psk="12345678x", scan_freq="2412")
# inject some traffic
sa = hapd.own_addr()
da = "ff:ff:ff:ff:ff:01"
hapd.request('DATA_TEST_CONFIG 1 ifname=brvlan1')
hapd.request('DATA_TEST_TX {} {} 0'.format(da, sa))
hapd.request('DATA_TEST_CONFIG 0')
# let the AP send couple of Beacon frames
time.sleep(1)
out = run_tshark(os.path.join(p['logdir'], "hwsim0.pcapng"),
"wlan.da == ff:ff:ff:ff:ff:00",
["wlan.fc.protected"])
if out is not None:
lines = out.splitlines()
if len(lines) < 1:
raise Exception("first frame not observed")
state = 1
for l in lines:
is_protected = int(l, 16)
if is_protected != 1:
state = 0
if state != 1:
raise Exception("Broadcast packets were not encrypted when no station was connected")
else:
raise Exception("first frame not observed")
out = run_tshark(os.path.join(p['logdir'], "hwsim0.pcapng"),
"wlan.da == ff:ff:ff:ff:ff:01",
["wlan.fc.protected"])
if out is not None:
lines = out.splitlines()
if len(lines) < 1:
raise Exception("second frame not observed")
state = 1
for l in lines:
is_protected = int(l, 16)
if is_protected != 1:
state = 0
if state != 1:
raise Exception("Broadcast packets were not encrypted when station was connected")
else:
raise Exception("second frame not observed")
dev[0].request("DISCONNECT")
dev[0].wait_disconnected()
finally:
subprocess.call(['ip', 'link', 'set', 'dev', 'brvlan1', 'down'])
subprocess.call(['ip', 'link', 'set', 'dev', 'wlan3.1', 'down'],
stderr=open('/dev/null', 'w'))
subprocess.call(['brctl', 'delif', 'brvlan1', 'wlan3.1'],
stderr=open('/dev/null', 'w'))
subprocess.call(['brctl', 'delbr', 'brvlan1'])
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