hostap/tests/hwsim/utils.py
Jouni Malinen fca9ef3fee tests: SAE-PK
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2020-06-02 23:48:37 +03:00

298 lines
9.4 KiB
Python

# Testing utilities
# Copyright (c) 2013-2019, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import binascii
import os
import socket
import struct
import subprocess
import time
import remotehost
import logging
logger = logging.getLogger()
import hostapd
def get_ifnames():
ifnames = []
with open("/proc/net/dev", "r") as f:
lines = f.readlines()
for l in lines:
val = l.split(':', 1)
if len(val) == 2:
ifnames.append(val[0].strip(' '))
return ifnames
class HwsimSkip(Exception):
def __init__(self, reason):
self.reason = reason
def __str__(self):
return self.reason
def long_duration_test(func):
func.long_duration_test = True
return func
class alloc_fail(object):
def __init__(self, dev, count, funcs):
self._dev = dev
self._count = count
self._funcs = funcs
def __enter__(self):
cmd = "TEST_ALLOC_FAIL %d:%s" % (self._count, self._funcs)
if "OK" not in self._dev.request(cmd):
raise HwsimSkip("TEST_ALLOC_FAIL not supported")
def __exit__(self, type, value, traceback):
if type is None:
if self._dev.request("GET_ALLOC_FAIL") != "0:%s" % self._funcs:
raise Exception("Allocation failure did not trigger")
class fail_test(object):
def __init__(self, dev, count, funcs):
self._dev = dev
self._count = count
self._funcs = funcs
def __enter__(self):
cmd = "TEST_FAIL %d:%s" % (self._count, self._funcs)
if "OK" not in self._dev.request(cmd):
raise HwsimSkip("TEST_FAIL not supported")
def __exit__(self, type, value, traceback):
if type is None:
if self._dev.request("GET_FAIL") != "0:%s" % self._funcs:
raise Exception("Test failure did not trigger")
def wait_fail_trigger(dev, cmd, note="Failure not triggered", max_iter=40,
timeout=0.05):
for i in range(0, max_iter):
if dev.request(cmd).startswith("0:"):
break
if i == max_iter - 1:
raise Exception(note)
time.sleep(timeout)
def require_under_vm():
with open('/proc/1/cmdline', 'r') as f:
cmd = f.read()
if "inside.sh" not in cmd:
raise HwsimSkip("Not running under VM")
def iface_is_in_bridge(bridge, ifname):
fname = "/sys/class/net/"+ifname+"/brport/bridge"
if not os.path.exists(fname):
return False
if not os.path.islink(fname):
return False
truebridge = os.path.basename(os.readlink(fname))
if bridge == truebridge:
return True
return False
def skip_with_fips(dev, reason="Not supported in FIPS mode"):
res = dev.get_capability("fips")
if res and 'FIPS' in res:
raise HwsimSkip(reason)
def check_ext_key_id_capa(dev):
res = dev.get_driver_status_field('capa.flags')
if (int(res, 0) & 0x8000000000000000) == 0:
raise HwsimSkip("Extended Key ID not supported")
def skip_without_tkip(dev):
res = dev.get_capability("fips")
if "TKIP" not in dev.get_capability("pairwise") or \
"TKIP" not in dev.get_capability("group"):
raise HwsimSkip("Cipher TKIP not supported")
def check_wep_capa(dev):
if "WEP40" not in dev.get_capability("group"):
raise HwsimSkip("WEP not supported")
def check_sae_capab(dev):
if "SAE" not in dev.get_capability("auth_alg"):
raise HwsimSkip("SAE not supported")
def check_sae_pk_capab(dev):
if "PK" not in dev.get_capability("sae"):
raise HwsimSkip("SAE-PK not supported")
def check_tls_tod(dev):
tls = dev.request("GET tls_library")
if not tls.startswith("OpenSSL") and not tls.startswith("internal"):
raise HwsimSkip("TLS TOD-TOFU/STRICT not supported with this TLS library: " + tls)
def vht_supported():
cmd = subprocess.Popen(["iw", "reg", "get"], stdout=subprocess.PIPE)
reg = cmd.stdout.read()
if "@ 80)" in reg or "@ 160)" in reg:
return True
return False
# This function checks whether the provided dev, which may be either
# WpaSupplicant or Hostapd supports CSA.
def csa_supported(dev):
res = dev.get_driver_status()
if (int(res['capa.flags'], 0) & 0x80000000) == 0:
raise HwsimSkip("CSA not supported")
def get_phy(ap, ifname=None):
phy = "phy3"
try:
hostname = ap['hostname']
except:
hostname = None
host = remotehost.Host(hostname)
if ifname == None:
ifname = ap['ifname']
status, buf = host.execute(["iw", "dev", ifname, "info"])
if status != 0:
raise Exception("iw " + ifname + " info failed")
lines = buf.split("\n")
for line in lines:
if "wiphy" in line:
words = line.split()
phy = "phy" + words[1]
break
return phy
def parse_ie(buf):
ret = {}
data = binascii.unhexlify(buf)
while len(data) >= 2:
ie, elen = struct.unpack('BB', data[0:2])
data = data[2:]
if elen > len(data):
break
ret[ie] = data[0:elen]
data = data[elen:]
return ret
def wait_regdom_changes(dev):
for i in range(10):
ev = dev.wait_event(["CTRL-EVENT-REGDOM-CHANGE"], timeout=0.1)
if ev is None:
break
def clear_country(dev):
logger.info("Try to clear country")
id = dev[1].add_network()
dev[1].set_network(id, "mode", "2")
dev[1].set_network_quoted(id, "ssid", "country-clear")
dev[1].set_network(id, "key_mgmt", "NONE")
dev[1].set_network(id, "frequency", "2412")
dev[1].set_network(id, "scan_freq", "2412")
dev[1].select_network(id)
ev = dev[1].wait_event(["CTRL-EVENT-CONNECTED"])
if ev:
dev[0].connect("country-clear", key_mgmt="NONE", scan_freq="2412")
dev[1].request("DISCONNECT")
dev[0].wait_disconnected()
dev[0].request("DISCONNECT")
dev[0].request("ABORT_SCAN")
time.sleep(1)
dev[0].dump_monitor()
dev[1].dump_monitor()
def clear_regdom(hapd, dev, count=1):
disable_hapd(hapd)
clear_regdom_dev(dev, count)
def disable_hapd(hapd):
if hapd:
hapd.request("DISABLE")
time.sleep(0.1)
def clear_regdom_dev(dev, count=1):
for i in range(count):
dev[i].request("DISCONNECT")
for i in range(count):
dev[i].disconnect_and_stop_scan()
dev[0].cmd_execute(['iw', 'reg', 'set', '00'])
wait_regdom_changes(dev[0])
country = dev[0].get_driver_status_field("country")
logger.info("Country code at the end: " + country)
if country != "00":
clear_country(dev)
for i in range(count):
dev[i].flush_scan_cache()
def radiotap_build():
radiotap_payload = struct.pack('BB', 0x08, 0)
radiotap_payload += struct.pack('BB', 0, 0)
radiotap_payload += struct.pack('BB', 0, 0)
radiotap_hdr = struct.pack('<BBHL', 0, 0, 8 + len(radiotap_payload),
0xc002)
return radiotap_hdr + radiotap_payload
def start_monitor(ifname, freq=2412):
subprocess.check_call(["iw", ifname, "set", "type", "monitor"])
subprocess.call(["ip", "link", "set", "dev", ifname, "up"])
subprocess.check_call(["iw", ifname, "set", "freq", str(freq)])
ETH_P_ALL = 3
sock = socket.socket(socket.AF_PACKET, socket.SOCK_RAW,
socket.htons(ETH_P_ALL))
sock.bind((ifname, 0))
sock.settimeout(0.5)
return sock
def stop_monitor(ifname):
subprocess.call(["ip", "link", "set", "dev", ifname, "down"])
subprocess.call(["iw", ifname, "set", "type", "managed"])
def clear_scan_cache(apdev):
ifname = apdev['ifname']
hostapd.cmd_execute(apdev, ['ifconfig', ifname, 'up'])
hostapd.cmd_execute(apdev, ['iw', ifname, 'scan', 'trigger', 'freq', '2412',
'flush'])
time.sleep(0.1)
hostapd.cmd_execute(apdev, ['ifconfig', ifname, 'down'])
def set_world_reg(apdev0=None, apdev1=None, dev0=None):
if apdev0:
hostapd.cmd_execute(apdev0, ['iw', 'reg', 'set', '00'])
if apdev1:
hostapd.cmd_execute(apdev1, ['iw', 'reg', 'set', '00'])
if dev0:
dev0.cmd_execute(['iw', 'reg', 'set', '00'])
time.sleep(0.1)
def sysctl_write(val):
subprocess.call(['sysctl', '-w', val], stdout=open('/dev/null', 'w'))
def var_arg_call(fn, dev, apdev, params):
if fn.__code__.co_argcount > 2:
return fn(dev, apdev, params)
elif fn.__code__.co_argcount > 1:
return fn(dev, apdev)
return fn(dev)
def cloned_wrapper(wrapper, fn):
# we need the name set right for selecting / printing etc.
wrapper.__name__ = fn.__name__
wrapper.__doc__ = fn.__doc__
# reparent to the right module for module filtering
wrapper.__module__ = fn.__module__
return wrapper
def disable_ipv6(fn):
def wrapper(dev, apdev, params):
require_under_vm()
try:
sysctl_write('net.ipv6.conf.all.disable_ipv6=1')
sysctl_write('net.ipv6.conf.default.disable_ipv6=1')
var_arg_call(fn, dev, apdev, params)
finally:
sysctl_write('net.ipv6.conf.all.disable_ipv6=0')
sysctl_write('net.ipv6.conf.default.disable_ipv6=0')
return cloned_wrapper(wrapper, fn)
def reset_ignore_old_scan_res(fn):
def wrapper(dev, apdev, params):
try:
var_arg_call(fn, dev, apdev, params)
finally:
dev[0].set("ignore_old_scan_res", "0")
return cloned_wrapper(wrapper, fn)