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206 lines
8.1 KiB
Python
206 lines
8.1 KiB
Python
# 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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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, hs20_ap_params
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from test_ap_hs20 import interworking_select, interworking_connect
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import struct
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import logging
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logger = logging.getLogger()
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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]).decode()
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if self._addr not 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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def hs20_filters_connect(dev, apdev, disable_dgaf=False, proxy_arp=False):
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bssid = apdev[0]['bssid']
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params = hs20_ap_params()
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params['hessid'] = bssid
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# Do not disable dgaf, to test that the station drops unicast IP packets
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# encrypted with GTK.
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params['disable_dgaf'] = '0'
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params['proxy_arp'] = '1'
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params['ap_isolate'] = '1'
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params['bridge'] = 'ap-br0'
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try:
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hapd = hostapd.add_ap(apdev[0], params)
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except:
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# For now, do not report failures due to missing kernel support.
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raise HwsimSkip("Could not start hostapd - assume proxyarp not supported in the kernel")
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subprocess.call(['brctl', 'setfd', 'ap-br0', '0'])
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subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'up'])
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dev[0].hs20_enable()
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id = dev[0].add_cred_values({'realm': "example.com",
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'username': "hs20-test",
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'password': "password",
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'ca_cert': "auth_serv/ca.pem",
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'domain': "example.com",
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'update_identifier': "1234"})
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interworking_select(dev[0], bssid, "home", freq="2412")
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interworking_connect(dev[0], bssid, "TTLS")
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time.sleep(0.1)
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return dev[0], hapd
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def _test_ip4_gtk_drop(devs, apdevs, params, dst):
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require_under_vm()
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procfile = '/proc/sys/net/ipv4/conf/%s/drop_unicast_in_l2_multicast' % devs[0].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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[dev, hapd] = hs20_filters_connect(devs, apdevs)
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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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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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try:
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logger.info(s.recvfrom(1024))
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logger.info("procfile=" + procfile + " val=" + open(procfile, 'r').read().rstrip())
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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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def test_ip4_gtk_drop_bcast(devs, apdevs, params):
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"""Hotspot 2.0 frame filtering - IPv4 GTK drop broadcast"""
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_test_ip4_gtk_drop(devs, apdevs, params, dst='ffffffffffff')
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def test_ip4_gtk_drop_mcast(devs, apdevs, params):
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"""Hotspot 2.0 frame filtering - IPv4 GTK drop multicast"""
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_test_ip4_gtk_drop(devs, apdevs, params, dst='ff0000000000')
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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' % devs[0].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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[dev, hapd] = hs20_filters_connect(devs, apdevs)
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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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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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try:
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logger.info(s.recvfrom(1024))
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logger.info("procfile=" + procfile + " val=" + open(procfile, 'r').read().rstrip())
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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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def test_ip6_gtk_drop_bcast(devs, apdevs, params):
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"""Hotspot 2.0 frame filtering - IPv6 GTK drop broadcast"""
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_test_ip6_gtk_drop(devs, apdevs, params, dst='ffffffffffff')
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def test_ip6_gtk_drop_mcast(devs, apdevs, params):
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"""Hotspot 2.0 frame filtering - IPv6 GTK drop multicast"""
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_test_ip6_gtk_drop(devs, apdevs, params, dst='ff0000000000')
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def test_ip4_drop_gratuitous_arp(devs, apdevs, params):
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"""Hotspot 2.0 frame filtering - IPv4 drop gratuitous ARP"""
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require_under_vm()
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procfile = '/proc/sys/net/ipv4/conf/%s/drop_gratuitous_arp' % devs[0].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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[dev, hapd] = hs20_filters_connect(devs, apdevs)
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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).decode()
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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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if hapd.own_addr() in subprocess.check_output(['ip', 'neigh', 'show']).decode():
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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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def test_ip6_drop_unsolicited_na(devs, apdevs, params):
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"""Hotspot 2.0 frame filtering - IPv6 drop unsolicited NA"""
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require_under_vm()
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procfile = '/proc/sys/net/ipv6/conf/%s/drop_unsolicited_na' % devs[0].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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[dev, hapd] = hs20_filters_connect(devs, apdevs)
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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).decode()
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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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if hapd.own_addr() in subprocess.check_output(['ip', 'neigh', 'show']).decode():
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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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