hostap/tests/hwsim/wlantest.py

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# Python class for controlling wlantest
# 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 re
import os
import posixpath
import time
import subprocess
import logging
import wpaspy
logger = logging.getLogger()
class Wlantest:
remote_host = None
setup_params = None
exe_thread = None
exe_res = []
monitor_mod = None
setup_done = False
@classmethod
def stop_remote_wlantest(cls):
if cls.exe_thread is None:
# Local flow - no need for remote operations
return
cls.remote_host.execute(["killall", "-9", "wlantest"])
cls.remote_host.wait_execute_complete(cls.exe_thread, 5)
cls.exe_thread = None
cls.exe_res = []
@classmethod
def reset_remote_wlantest(cls):
cls.stop_remote_wlantest()
cls.remote_host = None
cls.setup_params = None
cls.exe_thread = None
cls.exe_res = []
cls.monitor_mod = None
cls.setup_done = False
@classmethod
def start_remote_wlantest(cls):
if cls.remote_host is None:
# Local flow - no need for remote operations
return
if cls.exe_thread is not None:
raise Exception("Cannot start wlantest twice")
log_dir = cls.setup_params['log_dir']
ifaces = re.split('; | |, ', cls.remote_host.ifname)
ifname = ifaces[0]
exe = cls.setup_params["wlantest"]
tc_name = cls.setup_params["tc_name"]
base_log_name = tc_name + "_wlantest_" + \
cls.remote_host.name + "_" + ifname
log_file = posixpath.join(log_dir, base_log_name + ".log")
pcap_file = posixpath.join(log_dir, base_log_name + ".pcapng")
cmd = "{} -i {} -n {} -c -dtN -L {}".format(exe, ifname,
pcap_file, log_file)
cls.remote_host.add_log(log_file)
cls.remote_host.add_log(pcap_file)
cls.exe_thread = cls.remote_host.execute_run(cmd.split(), cls.exe_res)
# Give wlantest a chance to start working
time.sleep(1)
@classmethod
def register_remote_wlantest(cls, host, setup_params, monitor_mod):
if cls.remote_host is not None:
raise Exception("Cannot register remote wlantest twice")
cls.remote_host = host
cls.setup_params = setup_params
cls.monitor_mod = monitor_mod
status, buf = host.execute(["which", setup_params['wlantest']])
if status != 0:
raise Exception(host.name + " - wlantest: " + buf)
status, buf = host.execute(["which", setup_params['wlantest_cli']])
if status != 0:
raise Exception(host.name + " - wlantest_cli: " + buf)
@classmethod
def chan_from_wpa(cls, wpa, is_p2p=False):
if cls.monitor_mod is None:
return
m = cls.monitor_mod
return m.setup(cls.remote_host, [m.get_monitor_params(wpa, is_p2p)])
@classmethod
def setup(cls, wpa, is_p2p=False):
cls.chan_from_wpa(wpa, is_p2p)
cls.start_remote_wlantest()
cls.setup_done = True
def __init__(self):
if not self.setup_done:
raise Exception("Cannot create Wlantest instance before setup()")
if os.path.isfile('../../wlantest/wlantest_cli'):
self.wlantest_cli = '../../wlantest/wlantest_cli'
else:
self.wlantest_cli = 'wlantest_cli'
def cli_cmd(self, params):
if self.remote_host is not None:
exe = self.setup_params["wlantest_cli"]
ret = self.remote_host.execute([exe] + params)
if ret[0] != 0:
raise Exception("wlantest_cli failed")
return ret[1]
else:
return subprocess.check_output([self.wlantest_cli] + params)
def flush(self):
res = self.cli_cmd(["flush"])
if "FAIL" in res:
raise Exception("wlantest_cli flush failed")
def relog(self):
res = self.cli_cmd(["relog"])
if "FAIL" in res:
raise Exception("wlantest_cli relog failed")
def add_passphrase(self, passphrase):
res = self.cli_cmd(["add_passphrase", passphrase])
if "FAIL" in res:
raise Exception("wlantest_cli add_passphrase failed")
def add_wepkey(self, key):
res = self.cli_cmd(["add_wepkey", key])
if "FAIL" in res:
raise Exception("wlantest_cli add_key failed")
def info_bss(self, field, bssid):
res = self.cli_cmd(["info_bss", field, bssid])
if "FAIL" in res:
raise Exception("Could not get BSS info from wlantest for " + bssid)
return res
def get_bss_counter(self, field, bssid):
try:
res = self.cli_cmd(["get_bss_counter", field, bssid])
except Exception as e:
return 0
if "FAIL" in res:
return 0
return int(res)
def clear_bss_counters(self, bssid):
self.cli_cmd(["clear_bss_counters", bssid])
def info_sta(self, field, bssid, addr):
res = self.cli_cmd(["info_sta", field, bssid, addr])
if "FAIL" in res:
raise Exception("Could not get STA info from wlantest for " + addr)
return res
def get_sta_counter(self, field, bssid, addr):
res = self.cli_cmd(["get_sta_counter", field, bssid, addr])
if "FAIL" in res:
raise Exception("wlantest_cli command failed")
return int(res)
def clear_sta_counters(self, bssid, addr):
res = self.cli_cmd(["clear_sta_counters", bssid, addr])
if "FAIL" in res:
raise Exception("wlantest_cli command failed")
def tdls_clear(self, bssid, addr1, addr2):
self.cli_cmd(["clear_tdls_counters", bssid, addr1, addr2])
def get_tdls_counter(self, field, bssid, addr1, addr2):
res = self.cli_cmd(["get_tdls_counter", field, bssid, addr1, addr2])
if "FAIL" in res:
raise Exception("wlantest_cli command failed")
return int(res)
def require_ap_pmf_mandatory(self, bssid):
res = self.info_bss("rsn_capab", bssid)
if "MFPR" not in res:
raise Exception("AP did not require PMF")
if "MFPC" not in res:
raise Exception("AP did not enable PMF")
res = self.info_bss("key_mgmt", bssid)
if "PSK-SHA256" not in res:
raise Exception("AP did not enable SHA256-based AKM for PMF")
def require_ap_pmf_optional(self, bssid):
res = self.info_bss("rsn_capab", bssid)
if "MFPR" in res:
raise Exception("AP required PMF")
if "MFPC" not in res:
raise Exception("AP did not enable PMF")
def require_ap_no_pmf(self, bssid):
res = self.info_bss("rsn_capab", bssid)
if "MFPR" in res:
raise Exception("AP required PMF")
if "MFPC" in res:
raise Exception("AP enabled PMF")
def require_sta_pmf_mandatory(self, bssid, addr):
res = self.info_sta("rsn_capab", bssid, addr)
if "MFPR" not in res:
raise Exception("STA did not require PMF")
if "MFPC" not in res:
raise Exception("STA did not enable PMF")
def require_sta_pmf(self, bssid, addr):
res = self.info_sta("rsn_capab", bssid, addr)
if "MFPC" not in res:
raise Exception("STA did not enable PMF")
def require_sta_no_pmf(self, bssid, addr):
res = self.info_sta("rsn_capab", bssid, addr)
if "MFPC" in res:
raise Exception("STA enabled PMF")
def require_sta_key_mgmt(self, bssid, addr, key_mgmt):
res = self.info_sta("key_mgmt", bssid, addr)
if key_mgmt not in res:
raise Exception("Unexpected STA key_mgmt")
def get_tx_tid(self, bssid, addr, tid):
res = self.cli_cmd(["get_tx_tid", bssid, addr, str(tid)])
if "FAIL" in res:
raise Exception("wlantest_cli command failed")
return int(res)
def get_rx_tid(self, bssid, addr, tid):
res = self.cli_cmd(["get_rx_tid", bssid, addr, str(tid)])
if "FAIL" in res:
raise Exception("wlantest_cli command failed")
return int(res)
def get_tid_counters(self, bssid, addr):
tx = {}
rx = {}
for tid in range(0, 17):
tx[tid] = self.get_tx_tid(bssid, addr, tid)
rx[tid] = self.get_rx_tid(bssid, addr, tid)
return [ tx, rx ]