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+# Hotspot 2.0 filtering tests
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+# Copyright (c) 2015, Intel Deutschland GmbH
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+#
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+# This software may be distributed under the terms of the BSD license.
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+# See README for more details.
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+
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+import hostapd
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+import hwsim_utils
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+import socket
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+import subprocess
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+import binascii
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+from utils import HwsimSkip, require_under_vm
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+import os
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+import time
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+from test_ap_hs20 import build_arp, build_na
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+import struct
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+
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+class IPAssign(object):
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+ def __init__(self, iface, addr, ipv6=False):
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+ self._iface = iface
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+ self._addr = addr
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+ self._cmd = ['ip']
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+ if ipv6:
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+ self._cmd.append('-6')
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+ self._cmd.append('addr')
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+ self._ipv6 = ipv6
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+ def __enter__(self):
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+ subprocess.call(self._cmd + ['add', self._addr, 'dev', self._iface])
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+ if self._ipv6:
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+ # wait for DAD to finish
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+ while True:
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+ o = subprocess.check_output(self._cmd + ['show', 'tentative', 'dev', self._iface])
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+ if not self._addr in o:
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+ break
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+ time.sleep(0.1)
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+ def __exit__(self, type, value, traceback):
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+ subprocess.call(self._cmd + ['del', self._addr, 'dev', self._iface])
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+
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+def _test_ip4_gtk_drop(devs, apdevs, params, dst):
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+ require_under_vm()
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+ dev = devs[0]
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+ procfile = '/proc/sys/net/ipv4/conf/%s/drop_unicast_in_l2_multicast' % dev.ifname
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+ if not os.path.exists(procfile):
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+ raise HwsimSkip("kernel doesn't have capability")
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+
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+ ap_params = { 'ssid': 'open', 'channel': '5' }
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+ hapd = hostapd.add_ap(apdevs[0]['ifname'], ap_params)
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+ dev.connect('open', key_mgmt="NONE", scan_freq="2432")
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+
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+ with IPAssign(dev.ifname, '10.0.0.1/24'):
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+ s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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+ s.bind(("10.0.0.1", 12345))
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+ s.settimeout(0.1)
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+
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+ pkt = dst
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+ pkt += hapd.own_addr().replace(':', '')
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+ pkt += '0800'
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+ pkt += '45000020786840004011ae600a0000040a000001'
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+ pkt += '30393039000c0000'
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+ pkt += '61736466' # "asdf"
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+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
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+ raise Exception("DATA_TEST_FRAME failed")
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+
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+ data, addr = s.recvfrom(1024)
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+ if data != 'asdf':
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+ raise Exception("invalid data received")
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+
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+ open(procfile, 'w').write('1')
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+ try:
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+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
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+ raise Exception("DATA_TEST_FRAME failed")
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+
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+ try:
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+ print s.recvfrom(1024)
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+ raise Exception("erroneously received frame!")
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+ except socket.timeout:
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+ # this is the expected behaviour
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+ pass
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+ finally:
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+ open(procfile, 'w').write('0')
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+
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+def test_ip4_gtk_drop_bcast(devs, apdevs, params):
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+ _test_ip4_gtk_drop(devs, apdevs, params, dst='ffffffffffff')
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+
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+def test_ip4_gtk_drop_mcast(devs, apdevs, params):
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+ _test_ip4_gtk_drop(devs, apdevs, params, dst='ff0000000000')
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+
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+def _test_ip6_gtk_drop(devs, apdevs, params, dst):
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+ require_under_vm()
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+ dev = devs[0]
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+ procfile = '/proc/sys/net/ipv6/conf/%s/drop_unicast_in_l2_multicast' % dev.ifname
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+ if not os.path.exists(procfile):
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+ raise HwsimSkip("kernel doesn't have capability")
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+
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+ ap_params = { 'ssid': 'open', 'channel': '5' }
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+ hapd = hostapd.add_ap(apdevs[0]['ifname'], ap_params)
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+ dev.connect('open', key_mgmt="NONE", scan_freq="2432")
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+
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+ with IPAssign(dev.ifname, 'fdaa::1/48', ipv6=True):
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+ s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
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+ s.bind(("fdaa::1", 12345))
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+ s.settimeout(0.1)
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+
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+ pkt = dst
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+ pkt += hapd.own_addr().replace(':', '')
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+ pkt += '86dd'
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+ pkt += '60000000000c1140fdaa0000000000000000000000000002fdaa0000000000000000000000000001'
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+ pkt += '30393039000cde31'
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+ pkt += '61736466' # "asdf"
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+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
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+ raise Exception("DATA_TEST_FRAME failed")
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+
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+ data, addr = s.recvfrom(1024)
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+ if data != 'asdf':
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+ raise Exception("invalid data received")
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+
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+ open(procfile, 'w').write('1')
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+ try:
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+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
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+ raise Exception("DATA_TEST_FRAME failed")
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+
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+ try:
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+ print s.recvfrom(1024)
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+ raise Exception("erroneously received frame!")
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+ except socket.timeout:
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+ # this is the expected behaviour
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+ pass
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+ finally:
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+ open(procfile, 'w').write('0')
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+
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+def test_ip6_gtk_drop_bcast(devs, apdevs, params):
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+ _test_ip6_gtk_drop(devs, apdevs, params, dst='ffffffffffff')
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+
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+def test_ip6_gtk_drop_mcast(devs, apdevs, params):
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+ _test_ip6_gtk_drop(devs, apdevs, params, dst='ff0000000000')
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+
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+def test_ip4_drop_gratuitous_arp(devs, apdevs, params):
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+ require_under_vm()
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+ dev = devs[0]
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+ procfile = '/proc/sys/net/ipv4/conf/%s/drop_gratuitous_arp' % dev.ifname
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+ if not os.path.exists(procfile):
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+ raise HwsimSkip("kernel doesn't have capability")
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+
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+ ap_params = { 'ssid': 'open', 'channel': '5' }
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+ hapd = hostapd.add_ap(apdevs[0]['ifname'], ap_params)
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+ dev.connect('open', key_mgmt="NONE", scan_freq="2432")
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+
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+ with IPAssign(dev.ifname, '10.0.0.2/24'):
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+ # add an entry that can be updated by gratuitous ARP
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+ subprocess.call(['ip', 'neigh', 'add', '10.0.0.1', 'lladdr', '02:00:00:00:00:ff', 'nud', 'reachable', 'dev', dev.ifname])
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+ # wait for lock-time
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+ time.sleep(1)
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+ try:
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+ ap_addr = hapd.own_addr()
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+ cl_addr = dev.own_addr()
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+ pkt = build_arp(cl_addr, ap_addr, 2, ap_addr, '10.0.0.1', ap_addr, '10.0.0.1')
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+ pkt = binascii.hexlify(pkt)
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+
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+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
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+ raise Exception("DATA_TEST_FRAME failed")
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+
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+ if not hapd.own_addr() in subprocess.check_output(['ip', 'neigh', 'show']):
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+ raise Exception("gratuitous ARP frame failed to update")
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+
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+ subprocess.call(['ip', 'neigh', 'replace', '10.0.0.1', 'lladdr', '02:00:00:00:00:ff', 'nud', 'reachable', 'dev', dev.ifname])
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+ # wait for lock-time
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+ time.sleep(1)
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+
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+ open(procfile, 'w').write('1')
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+
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+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
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+ raise Exception("DATA_TEST_FRAME failed")
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+
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+ if hapd.own_addr() in subprocess.check_output(['ip', 'neigh', 'show']):
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+ raise Exception("gratuitous ARP frame updated erroneously")
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+ finally:
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+ subprocess.call(['ip', 'neigh', 'del', '10.0.0.1', 'dev', dev.ifname])
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+ open(procfile, 'w').write('0')
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+
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+def test_ip6_drop_unsolicited_na(devs, apdevs, params):
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+ require_under_vm()
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+ dev = devs[0]
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+ procfile = '/proc/sys/net/ipv6/conf/%s/drop_unsolicited_na' % dev.ifname
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+ if not os.path.exists(procfile):
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+ raise HwsimSkip("kernel doesn't have capability")
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+
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+ ap_params = { 'ssid': 'open', 'channel': '5' }
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+ hapd = hostapd.add_ap(apdevs[0]['ifname'], ap_params)
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+ dev.connect('open', key_mgmt="NONE", scan_freq="2432")
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+
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+ with IPAssign(dev.ifname, 'fdaa::1/48', ipv6=True):
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+ # add an entry that can be updated by unsolicited NA
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+ subprocess.call(['ip', '-6', 'neigh', 'add', 'fdaa::2', 'lladdr', '02:00:00:00:00:ff', 'nud', 'reachable', 'dev', dev.ifname])
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+ try:
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+ ap_addr = hapd.own_addr()
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+ cl_addr = dev.own_addr()
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+ pkt = build_na(ap_addr, 'fdaa::2', 'ff02::1', 'fdaa::2', flags=0x20,
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+ opt=binascii.unhexlify('0201' + ap_addr.replace(':', '')))
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+ pkt = binascii.hexlify(pkt)
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+
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+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
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+ raise Exception("DATA_TEST_FRAME failed")
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+
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+ if not hapd.own_addr() in subprocess.check_output(['ip', 'neigh', 'show']):
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+ raise Exception("unsolicited NA frame failed to update")
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+
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+ subprocess.call(['ip', '-6', 'neigh', 'replace', 'fdaa::2', 'lladdr', '02:00:00:00:00:ff', 'nud', 'reachable', 'dev', dev.ifname])
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+
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+ open(procfile, 'w').write('1')
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+
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+ if "OK" not in hapd.request('DATA_TEST_FRAME ' + pkt):
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+ raise Exception("DATA_TEST_FRAME failed")
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+
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+ if hapd.own_addr() in subprocess.check_output(['ip', 'neigh', 'show']):
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+ raise Exception("unsolicited NA frame updated erroneously")
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+ finally:
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+ subprocess.call(['ip', '-6', 'neigh', 'del', 'fdaa::2', 'dev', dev.ifname])
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+ open(procfile, 'w').write('0')
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