--- /dev/null
+# Hotspot 2.0 filtering tests
+# Copyright (c) 2015, Intel Deutschland GmbH
+#
+# This software may be distributed under the terms of the BSD license.
+# See README for more details.
+
+import hostapd
+import hwsim_utils
+import socket
+import subprocess
+import binascii
+from utils import HwsimSkip, require_under_vm
+import os
+import time
+from test_ap_hs20 import build_arp, build_na, hs20_ap_params
+from test_ap_hs20 import interworking_select, interworking_connect
+import struct
+import logging
+logger = logging.getLogger()
+
+class IPAssign(object):
+ def __init__(self, iface, addr, ipv6=False):
+ self._iface = iface
+ self._addr = addr
+ self._cmd = ['ip']
+ if ipv6:
+ self._cmd.append('-6')
+ self._cmd.append('addr')
+ self._ipv6 = ipv6
+ def __enter__(self):
+ subprocess.call(self._cmd + ['add', self._addr, 'dev', self._iface])
+ if self._ipv6:
+ # wait for DAD to finish
+ while True:
+ o = subprocess.check_output(self._cmd + ['show', 'tentative', 'dev', self._iface])
+ if not self._addr in o:
+ break
+ time.sleep(0.1)
+ def __exit__(self, type, value, traceback):
+ subprocess.call(self._cmd + ['del', self._addr, 'dev', self._iface])
+
+def hs20_filters_connect(dev, apdev, disable_dgaf=False, proxy_arp=False):
+ bssid = apdev[0]['bssid']
+ params = hs20_ap_params()
+ params['hessid'] = bssid
+
+ # Do not disable dgaf, to test that the station drops unicast IP packets
+ # encrypted with GTK.
+ params['disable_dgaf'] = '0'
+ params['proxy_arp'] = '1'
+ params['ap_isolate'] = '1'
+ params['bridge'] = 'ap-br0'
+
+ try:
+ hapd = hostapd.add_ap(apdev[0], params)
+ except:
+ # For now, do not report failures due to missing kernel support.
+ raise HwsimSkip("Could not start hostapd - assume proxyarp not supported in the kernel")
+
+ subprocess.call(['brctl', 'setfd', 'ap-br0', '0'])
+ subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'up'])
+
+ dev[0].hs20_enable()
+
+ id = dev[0].add_cred_values({ 'realm': "example.com",
+ 'username': "hs20-test",
+ 'password': "password",
+ 'ca_cert': "auth_serv/ca.pem",
+ 'domain': "example.com",
+ 'update_identifier': "1234" })
+ interworking_select(dev[0], bssid, "home", freq="2412")
+ interworking_connect(dev[0], bssid, "TTLS")
+
+ time.sleep(0.1)
+
+ return dev[0], hapd
+
+def _test_ip4_gtk_drop(devs, apdevs, params, dst):
+ require_under_vm()
+ procfile = '/proc/sys/net/ipv4/conf/%s/drop_unicast_in_l2_multicast' % devs[0].ifname
+ if not os.path.exists(procfile):
+ raise HwsimSkip("kernel doesn't have capability")
+
+ [dev, hapd] = hs20_filters_connect(devs, apdevs)
+ with IPAssign(dev.ifname, '10.0.0.1/24'):
+ s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+ s.bind(("10.0.0.1", 12345))
+ s.settimeout(0.1)
+
+ pkt = dst
+ pkt += hapd.own_addr().replace(':', '')
+ pkt += '0800'
+ pkt += '45000020786840004011ae600a0000040a000001'
+ pkt += '30393039000c0000'
+ pkt += '61736466' # "asdf"
+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
+ raise Exception("DATA_TEST_FRAME failed")
+ try:
+ logger.info(s.recvfrom(1024))
+ logger.info("procfile=" + procfile + " val=" + open(procfile,'r').read().rstrip())
+ raise Exception("erroneously received frame!")
+ except socket.timeout:
+ # this is the expected behaviour
+ pass
+
+def test_ip4_gtk_drop_bcast(devs, apdevs, params):
+ _test_ip4_gtk_drop(devs, apdevs, params, dst='ffffffffffff')
+
+def test_ip4_gtk_drop_mcast(devs, apdevs, params):
+ _test_ip4_gtk_drop(devs, apdevs, params, dst='ff0000000000')
+
+def _test_ip6_gtk_drop(devs, apdevs, params, dst):
+ require_under_vm()
+ dev = devs[0]
+ procfile = '/proc/sys/net/ipv6/conf/%s/drop_unicast_in_l2_multicast' % devs[0].ifname
+ if not os.path.exists(procfile):
+ raise HwsimSkip("kernel doesn't have capability")
+
+ [dev, hapd] = hs20_filters_connect(devs, apdevs)
+
+ with IPAssign(dev.ifname, 'fdaa::1/48', ipv6=True):
+ s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
+ s.bind(("fdaa::1", 12345))
+ s.settimeout(0.1)
+
+ pkt = dst
+ pkt += hapd.own_addr().replace(':', '')
+ pkt += '86dd'
+ pkt += '60000000000c1140fdaa0000000000000000000000000002fdaa0000000000000000000000000001'
+ pkt += '30393039000cde31'
+ pkt += '61736466' # "asdf"
+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
+ raise Exception("DATA_TEST_FRAME failed")
+ try:
+ logger.info(s.recvfrom(1024))
+ logger.info("procfile=" + procfile + " val=" + open(procfile,'r').read().rstrip())
+ raise Exception("erroneously received frame!")
+ except socket.timeout:
+ # this is the expected behaviour
+ pass
+
+def test_ip6_gtk_drop_bcast(devs, apdevs, params):
+ _test_ip6_gtk_drop(devs, apdevs, params, dst='ffffffffffff')
+
+def test_ip6_gtk_drop_mcast(devs, apdevs, params):
+ _test_ip6_gtk_drop(devs, apdevs, params, dst='ff0000000000')
+
+def test_ip4_drop_gratuitous_arp(devs, apdevs, params):
+ require_under_vm()
+ procfile = '/proc/sys/net/ipv4/conf/%s/drop_gratuitous_arp' % devs[0].ifname
+ if not os.path.exists(procfile):
+ raise HwsimSkip("kernel doesn't have capability")
+
+ [dev, hapd] = hs20_filters_connect(devs, apdevs)
+
+ with IPAssign(dev.ifname, '10.0.0.2/24'):
+ # add an entry that can be updated by gratuitous ARP
+ subprocess.call(['ip', 'neigh', 'add', '10.0.0.1', 'lladdr', '02:00:00:00:00:ff', 'nud', 'reachable', 'dev', dev.ifname])
+ # wait for lock-time
+ time.sleep(1)
+ try:
+ ap_addr = hapd.own_addr()
+ cl_addr = dev.own_addr()
+ pkt = build_arp(cl_addr, ap_addr, 2, ap_addr, '10.0.0.1', ap_addr, '10.0.0.1')
+ pkt = binascii.hexlify(pkt)
+
+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
+ raise Exception("DATA_TEST_FRAME failed")
+
+ if hapd.own_addr() in subprocess.check_output(['ip', 'neigh', 'show']):
+ raise Exception("gratuitous ARP frame updated erroneously")
+ finally:
+ subprocess.call(['ip', 'neigh', 'del', '10.0.0.1', 'dev', dev.ifname])
+
+def test_ip6_drop_unsolicited_na(devs, apdevs, params):
+ require_under_vm()
+ procfile = '/proc/sys/net/ipv6/conf/%s/drop_unsolicited_na' % devs[0].ifname
+ if not os.path.exists(procfile):
+ raise HwsimSkip("kernel doesn't have capability")
+
+ [dev, hapd] = hs20_filters_connect(devs, apdevs)
+
+ with IPAssign(dev.ifname, 'fdaa::1/48', ipv6=True):
+ # add an entry that can be updated by unsolicited NA
+ subprocess.call(['ip', '-6', 'neigh', 'add', 'fdaa::2', 'lladdr', '02:00:00:00:00:ff', 'nud', 'reachable', 'dev', dev.ifname])
+ try:
+ ap_addr = hapd.own_addr()
+ cl_addr = dev.own_addr()
+ pkt = build_na(ap_addr, 'fdaa::2', 'ff02::1', 'fdaa::2', flags=0x20,
+ opt=binascii.unhexlify('0201' + ap_addr.replace(':', '')))
+ pkt = binascii.hexlify(pkt)
+
+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
+ raise Exception("DATA_TEST_FRAME failed")
+
+ if hapd.own_addr() in subprocess.check_output(['ip', 'neigh', 'show']):
+ raise Exception("unsolicited NA frame updated erroneously")
+ finally:
+ subprocess.call(['ip', '-6', 'neigh', 'del', 'fdaa::2', 'dev', dev.ifname])
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