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hostap/tests/hwsim/test_scan.py
Jouni Malinen cd9f5511a3 tests: Make scan_bss_limit more robust 
Explicitly clear cfg80211 scan cache to avoid issues with old BSS
entries from previous test cases.

Signed-off-by: Jouni Malinen <j@w1.fi>
2020-01-02 13:02:56 +02:00

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# Scanning tests
# Copyright (c) 2013-2016, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
from remotehost import remote_compatible
import binascii
import time
import logging
logger = logging.getLogger()
import os
import struct
import subprocess
import hostapd
from wpasupplicant import WpaSupplicant
from utils import HwsimSkip, fail_test, alloc_fail, wait_fail_trigger, parse_ie
from utils import clear_regdom_dev
from tshark import run_tshark
from test_ap_csa import switch_channel, wait_channel_switch, csa_supported
def check_scan(dev, params, other_started=False, test_busy=False):
if not other_started:
dev.dump_monitor()
id = dev.request("SCAN " + params)
if "FAIL" in id:
raise Exception("Failed to start scan")
id = int(id)
if test_busy:
if "FAIL-BUSY" not in dev.request("SCAN"):
raise Exception("SCAN command while already scanning not rejected")
if other_started:
ev = dev.wait_event(["CTRL-EVENT-SCAN-STARTED"])
if ev is None:
raise Exception("Other scan did not start")
if "id=" + str(id) in ev:
raise Exception("Own scan id unexpectedly included in start event")
ev = dev.wait_event(["CTRL-EVENT-SCAN-RESULTS"])
if ev is None:
raise Exception("Other scan did not complete")
if "id=" + str(id) in ev:
raise Exception("Own scan id unexpectedly included in completed event")
ev = dev.wait_event(["CTRL-EVENT-SCAN-STARTED"])
if ev is None:
raise Exception("Scan did not start")
if "id=" + str(id) not in ev:
raise Exception("Scan id not included in start event")
if test_busy:
if "FAIL-BUSY" not in dev.request("SCAN"):
raise Exception("SCAN command while already scanning not rejected")
ev = dev.wait_event(["CTRL-EVENT-SCAN-RESULTS"])
if ev is None:
raise Exception("Scan did not complete")
if "id=" + str(id) not in ev:
raise Exception("Scan id not included in completed event")
def check_scan_retry(dev, params, bssid):
for i in range(0, 5):
check_scan(dev, "freq=2412-2462,5180 use_id=1")
if int(dev.get_bss(bssid)['age']) <= 1:
return
raise Exception("Unexpectedly old BSS entry")
@remote_compatible
def test_scan(dev, apdev):
"""Control interface behavior on scan parameters"""
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
logger.info("Full scan")
check_scan(dev[0], "use_id=1", test_busy=True)
logger.info("Limited channel scan")
check_scan_retry(dev[0], "freq=2412-2462,5180 use_id=1", bssid)
# wait long enough to allow next scans to be verified not to find the AP
time.sleep(2)
logger.info("Passive single-channel scan")
check_scan(dev[0], "freq=2457 passive=1 use_id=1")
logger.info("Active single-channel scan")
check_scan(dev[0], "freq=2452 passive=0 use_id=1")
if int(dev[0].get_bss(bssid)['age']) < 2:
raise Exception("Unexpectedly updated BSS entry")
logger.info("Active single-channel scan on AP's operating channel")
check_scan_retry(dev[0], "freq=2412 passive=0 use_id=1", bssid)
@remote_compatible
def test_scan_tsf(dev, apdev):
"""Scan and TSF updates from Beacon/Probe Response frames"""
hostapd.add_ap(apdev[0], {"ssid": "test-scan",
'beacon_int': "100"})
bssid = apdev[0]['bssid']
tsf = []
for passive in [1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1]:
check_scan(dev[0], "freq=2412 passive=%d use_id=1" % passive)
bss = dev[0].get_bss(bssid)
if bss:
tsf.append(int(bss['tsf']))
logger.info("TSF: " + bss['tsf'])
if tsf[-3] <= tsf[-4]:
# For now, only write this in the log without failing the test case
# since mac80211_hwsim does not yet update the Timestamp field in
# Probe Response frames.
logger.info("Probe Response did not update TSF")
#raise Exception("Probe Response did not update TSF")
if tsf[-1] <= tsf[-3]:
raise Exception("Beacon did not update TSF")
if 0 in tsf:
raise Exception("0 TSF reported")
@remote_compatible
def test_scan_only(dev, apdev):
"""Control interface behavior on scan parameters with type=only"""
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
logger.info("Full scan")
check_scan(dev[0], "type=only use_id=1")
logger.info("Limited channel scan")
check_scan_retry(dev[0], "type=only freq=2412-2462,5180 use_id=1", bssid)
# wait long enough to allow next scans to be verified not to find the AP
time.sleep(2)
logger.info("Passive single-channel scan")
check_scan(dev[0], "type=only freq=2457 passive=1 use_id=1")
logger.info("Active single-channel scan")
check_scan(dev[0], "type=only freq=2452 passive=0 use_id=1")
if int(dev[0].get_bss(bssid)['age']) < 2:
raise Exception("Unexpectedly updated BSS entry")
logger.info("Active single-channel scan on AP's operating channel")
check_scan_retry(dev[0], "type=only freq=2412 passive=0 use_id=1", bssid)
@remote_compatible
def test_scan_external_trigger(dev, apdev):
"""Avoid operations during externally triggered scan"""
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
dev[0].cmd_execute(['iw', dev[0].ifname, 'scan', 'trigger'])
check_scan(dev[0], "use_id=1", other_started=True)
def test_scan_bss_expiration_count(dev, apdev):
"""BSS entry expiration based on scan results without match"""
if "FAIL" not in dev[0].request("BSS_EXPIRE_COUNT 0"):
raise Exception("Invalid BSS_EXPIRE_COUNT accepted")
if "OK" not in dev[0].request("BSS_EXPIRE_COUNT 2"):
raise Exception("BSS_EXPIRE_COUNT failed")
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
dev[0].scan(freq="2412", only_new=True)
if bssid not in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS not found in initial scan")
hapd.request("DISABLE")
# Try to give enough time for hostapd to have stopped mac80211 from
# beaconing before checking a new scan. This is needed with UML time travel
# testing.
hapd.ping()
time.sleep(0.2)
dev[0].scan(freq="2412", only_new=True)
if bssid not in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS not found in first scan without match")
dev[0].scan(freq="2412", only_new=True)
if bssid in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS found after two scans without match")
@remote_compatible
def test_scan_bss_expiration_age(dev, apdev):
"""BSS entry expiration based on age"""
try:
if "FAIL" not in dev[0].request("BSS_EXPIRE_AGE COUNT 9"):
raise Exception("Invalid BSS_EXPIRE_AGE accepted")
if "OK" not in dev[0].request("BSS_EXPIRE_AGE 10"):
raise Exception("BSS_EXPIRE_AGE failed")
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
# Allow couple more retries to avoid reporting errors during heavy load
for i in range(5):
dev[0].scan(freq="2412")
if bssid in dev[0].request("SCAN_RESULTS"):
break
if bssid not in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS not found in initial scan")
hapd.request("DISABLE")
logger.info("Waiting for BSS entry to expire")
time.sleep(7)
if bssid not in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS expired too quickly")
ev = dev[0].wait_event(["CTRL-EVENT-BSS-REMOVED"], timeout=15)
if ev is None:
raise Exception("BSS entry expiration timed out")
if bssid in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS not removed after expiration time")
finally:
dev[0].request("BSS_EXPIRE_AGE 180")
@remote_compatible
def test_scan_filter(dev, apdev):
"""Filter scan results based on SSID"""
try:
if "OK" not in dev[0].request("SET filter_ssids 1"):
raise Exception("SET failed")
id = dev[0].connect("test-scan", key_mgmt="NONE", only_add_network=True)
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
hostapd.add_ap(apdev[1], {"ssid": "test-scan2"})
bssid2 = apdev[1]['bssid']
dev[0].scan(freq="2412", only_new=True)
if bssid not in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS not found in scan results")
if bssid2 in dev[0].request("SCAN_RESULTS"):
raise Exception("Unexpected BSS found in scan results")
dev[0].set_network_quoted(id, "ssid", "")
dev[0].scan(freq="2412")
id2 = dev[0].connect("test", key_mgmt="NONE", only_add_network=True)
dev[0].scan(freq="2412")
finally:
dev[0].request("SET filter_ssids 0")
@remote_compatible
def test_scan_int(dev, apdev):
"""scan interval configuration"""
try:
if "FAIL" not in dev[0].request("SCAN_INTERVAL -1"):
raise Exception("Accepted invalid scan interval")
if "OK" not in dev[0].request("SCAN_INTERVAL 1"):
raise Exception("Failed to set scan interval")
dev[0].connect("not-used", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
times = {}
for i in range(0, 3):
logger.info("Waiting for scan to start")
start = os.times()[4]
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=5)
if ev is None:
raise Exception("did not start a scan")
stop = os.times()[4]
times[i] = stop - start
logger.info("Waiting for scan to complete")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 10)
if ev is None:
raise Exception("did not complete a scan")
logger.info("times=" + str(times))
if times[0] > 1 or times[1] < 0.5 or times[1] > 1.5 or times[2] < 0.5 or times[2] > 1.5:
raise Exception("Unexpected scan timing: " + str(times))
finally:
dev[0].request("SCAN_INTERVAL 5")
def test_scan_bss_operations(dev, apdev):
"""Control interface behavior on BSS parameters"""
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
hostapd.add_ap(apdev[1], {"ssid": "test2-scan"})
bssid2 = apdev[1]['bssid']
dev[0].scan(freq="2412")
dev[0].scan(freq="2412")
dev[0].scan(freq="2412")
id1 = dev[0].request("BSS FIRST MASK=0x1").splitlines()[0].split('=')[1]
id2 = dev[0].request("BSS LAST MASK=0x1").splitlines()[0].split('=')[1]
res = dev[0].request("BSS RANGE=ALL MASK=0x20001")
if "id=" + id1 not in res:
raise Exception("Missing BSS " + id1)
if "id=" + id2 not in res:
raise Exception("Missing BSS " + id2)
if "====" not in res:
raise Exception("Missing delim")
if "####" not in res:
raise Exception("Missing end")
res = dev[0].request("BSS RANGE=ALL MASK=0")
if "id=" + id1 not in res:
raise Exception("Missing BSS " + id1)
if "id=" + id2 not in res:
raise Exception("Missing BSS " + id2)
if "====" in res:
raise Exception("Unexpected delim")
if "####" in res:
raise Exception("Unexpected end delim")
res = dev[0].request("BSS RANGE=ALL MASK=0x1").splitlines()
if len(res) != 2:
raise Exception("Unexpected result: " + str(res))
res = dev[0].request("BSS FIRST MASK=0x1")
if "id=" + id1 not in res:
raise Exception("Unexpected result: " + res)
res = dev[0].request("BSS LAST MASK=0x1")
if "id=" + id2 not in res:
raise Exception("Unexpected result: " + res)
res = dev[0].request("BSS ID-" + id1 + " MASK=0x1")
if "id=" + id1 not in res:
raise Exception("Unexpected result: " + res)
res = dev[0].request("BSS NEXT-" + id1 + " MASK=0x1")
if "id=" + id2 not in res:
raise Exception("Unexpected result: " + res)
res = dev[0].request("BSS NEXT-" + id2 + " MASK=0x1")
if "id=" in res:
raise Exception("Unexpected result: " + res)
if len(dev[0].request("BSS RANGE=" + id2 + " MASK=0x1").splitlines()) != 0:
raise Exception("Unexpected RANGE=1 result")
if len(dev[0].request("BSS RANGE=" + id1 + "- MASK=0x1").splitlines()) != 2:
raise Exception("Unexpected RANGE=0- result")
if len(dev[0].request("BSS RANGE=-" + id2 + " MASK=0x1").splitlines()) != 2:
raise Exception("Unexpected RANGE=-1 result")
if len(dev[0].request("BSS RANGE=" + id1 + "-" + id2 + " MASK=0x1").splitlines()) != 2:
raise Exception("Unexpected RANGE=0-1 result")
if len(dev[0].request("BSS RANGE=" + id2 + "-" + id2 + " MASK=0x1").splitlines()) != 1:
raise Exception("Unexpected RANGE=1-1 result")
if len(dev[0].request("BSS RANGE=" + str(int(id2) + 1) + "-" + str(int(id2) + 10) + " MASK=0x1").splitlines()) != 0:
raise Exception("Unexpected RANGE=2-10 result")
if len(dev[0].request("BSS RANGE=0-" + str(int(id2) + 10) + " MASK=0x1").splitlines()) != 2:
raise Exception("Unexpected RANGE=0-10 result")
if len(dev[0].request("BSS RANGE=" + id1 + "-" + id1 + " MASK=0x1").splitlines()) != 1:
raise Exception("Unexpected RANGE=0-0 result")
res = dev[0].request("BSS p2p_dev_addr=FOO")
if "FAIL" in res or "id=" in res:
raise Exception("Unexpected result: " + res)
res = dev[0].request("BSS p2p_dev_addr=00:11:22:33:44:55")
if "FAIL" in res or "id=" in res:
raise Exception("Unexpected result: " + res)
dev[0].request("BSS_FLUSH 1000")
res = dev[0].request("BSS RANGE=ALL MASK=0x1").splitlines()
if len(res) != 2:
raise Exception("Unexpected result after BSS_FLUSH 1000")
dev[0].request("BSS_FLUSH 0")
res = dev[0].request("BSS RANGE=ALL MASK=0x1").splitlines()
if len(res) != 0:
raise Exception("Unexpected result after BSS_FLUSH 0")
@remote_compatible
def test_scan_and_interface_disabled(dev, apdev):
"""Scan operation when interface gets disabled"""
try:
dev[0].request("SCAN")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"])
if ev is None:
raise Exception("Scan did not start")
dev[0].request("DRIVER_EVENT INTERFACE_DISABLED")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=7)
if ev is not None:
raise Exception("Scan completed unexpectedly")
# verify that scan is rejected
if "FAIL" not in dev[0].request("SCAN"):
raise Exception("New scan request was accepted unexpectedly")
dev[0].request("DRIVER_EVENT INTERFACE_ENABLED")
dev[0].scan(freq="2412")
finally:
dev[0].request("DRIVER_EVENT INTERFACE_ENABLED")
@remote_compatible
def test_scan_for_auth(dev, apdev):
"""cfg80211 workaround with scan-for-auth"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "open"})
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412")
# Block sme-connect radio work with an external radio work item, so that
# SELECT_NETWORK can decide to use fast associate without a new scan while
# cfg80211 still has the matching BSS entry, but the actual connection is
# not yet started.
id = dev[0].request("RADIO_WORK add block-work")
ev = dev[0].wait_event(["EXT-RADIO-WORK-START"])
if ev is None:
raise Exception("Timeout while waiting radio work to start")
dev[0].connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
dev[0].dump_monitor()
# Clear cfg80211 BSS table.
res, data = dev[0].cmd_execute(['iw', dev[0].ifname, 'scan', 'trigger',
'freq', '2457', 'flush'])
if res != 0:
raise HwsimSkip("iw scan trigger flush not supported")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 5)
if ev is None:
raise Exception("External flush scan timed out")
# Release blocking radio work to allow connection to go through with the
# cfg80211 BSS entry missing.
dev[0].request("RADIO_WORK done " + id)
dev[0].wait_connected(timeout=15)
@remote_compatible
def test_scan_for_auth_fail(dev, apdev):
"""cfg80211 workaround with scan-for-auth failing"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "open"})
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412")
# Block sme-connect radio work with an external radio work item, so that
# SELECT_NETWORK can decide to use fast associate without a new scan while
# cfg80211 still has the matching BSS entry, but the actual connection is
# not yet started.
id = dev[0].request("RADIO_WORK add block-work")
ev = dev[0].wait_event(["EXT-RADIO-WORK-START"])
if ev is None:
raise Exception("Timeout while waiting radio work to start")
dev[0].connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
dev[0].dump_monitor()
hapd.disable()
# Clear cfg80211 BSS table.
res, data = dev[0].cmd_execute(['iw', dev[0].ifname, 'scan', 'trigger',
'freq', '2457', 'flush'])
if res != 0:
raise HwsimSkip("iw scan trigger flush not supported")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 5)
if ev is None:
raise Exception("External flush scan timed out")
# Release blocking radio work to allow connection to go through with the
# cfg80211 BSS entry missing.
dev[0].request("RADIO_WORK done " + id)
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS",
"CTRL-EVENT-CONNECTED"], 15)
if ev is None:
raise Exception("Scan event missing")
if "CTRL-EVENT-CONNECTED" in ev:
raise Exception("Unexpected connection")
dev[0].request("DISCONNECT")
@remote_compatible
def test_scan_for_auth_wep(dev, apdev):
"""cfg80211 scan-for-auth workaround with WEP keys"""
dev[0].flush_scan_cache()
hapd = hostapd.add_ap(apdev[0],
{"ssid": "wep", "wep_key0": '"abcde"',
"auth_algs": "2"})
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412")
# Block sme-connect radio work with an external radio work item, so that
# SELECT_NETWORK can decide to use fast associate without a new scan while
# cfg80211 still has the matching BSS entry, but the actual connection is
# not yet started.
id = dev[0].request("RADIO_WORK add block-work")
ev = dev[0].wait_event(["EXT-RADIO-WORK-START"])
if ev is None:
raise Exception("Timeout while waiting radio work to start")
dev[0].connect("wep", key_mgmt="NONE", wep_key0='"abcde"',
auth_alg="SHARED", scan_freq="2412", wait_connect=False)
dev[0].dump_monitor()
# Clear cfg80211 BSS table.
res, data = dev[0].cmd_execute(['iw', dev[0].ifname, 'scan', 'trigger',
'freq', '2457', 'flush'])
if res != 0:
raise HwsimSkip("iw scan trigger flush not supported")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 5)
if ev is None:
raise Exception("External flush scan timed out")
# Release blocking radio work to allow connection to go through with the
# cfg80211 BSS entry missing.
dev[0].request("RADIO_WORK done " + id)
dev[0].wait_connected(timeout=15)
@remote_compatible
def test_scan_hidden(dev, apdev):
"""Control interface behavior on scan parameters"""
dev[0].flush_scan_cache()
ssid = "test-scan"
wrong_ssid = "wrong"
hapd = hostapd.add_ap(apdev[0], {"ssid": ssid,
"ignore_broadcast_ssid": "1"})
bssid = apdev[0]['bssid']
check_scan(dev[0], "freq=2412 use_id=1")
try:
payload = struct.pack('BB', 0, len(wrong_ssid)) + wrong_ssid.encode()
ssid_list = struct.pack('BB', 84, len(payload)) + payload
cmd = "VENDOR_ELEM_ADD 14 " + binascii.hexlify(ssid_list).decode()
if "OK" not in dev[0].request(cmd):
raise Exception("VENDOR_ELEM_ADD failed")
check_scan(dev[0], "freq=2412 use_id=1")
payload = struct.pack('<L', binascii.crc32(wrong_ssid.encode()))
ssid_list = struct.pack('BBB', 255, 1 + len(payload), 58) + payload
cmd = "VENDOR_ELEM_ADD 14 " + binascii.hexlify(ssid_list).decode()
if "OK" not in dev[0].request(cmd):
raise Exception("VENDOR_ELEM_ADD failed")
check_scan(dev[0], "freq=2412 use_id=1")
finally:
dev[0].request("VENDOR_ELEM_REMOVE 14 *")
if "test-scan" in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS unexpectedly found in initial scan")
id1 = dev[0].connect("foo", key_mgmt="NONE", scan_ssid="1",
only_add_network=True)
id2 = dev[0].connect("test-scan", key_mgmt="NONE", scan_ssid="1",
only_add_network=True)
id3 = dev[0].connect("bar", key_mgmt="NONE", only_add_network=True)
check_scan(dev[0], "freq=2412 use_id=1")
if "test-scan" in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS unexpectedly found in scan")
# Allow multiple attempts to be more robust under heavy CPU load that can
# result in Probe Response frames getting sent only after the station has
# already stopped waiting for the response on the channel.
found = False
for i in range(10):
check_scan(dev[0], "scan_id=%d,%d,%d freq=2412 use_id=1" % (id1, id2, id3))
if "test-scan" in dev[0].request("SCAN_RESULTS"):
found = True
break
if not found:
raise Exception("BSS not found in scan")
if "FAIL" not in dev[0].request("SCAN scan_id=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17"):
raise Exception("Too many scan_id values accepted")
# Duplicate SSID removal
check_scan(dev[0], "scan_id=%d,%d,%d freq=2412 use_id=1" % (id1, id1, id2))
dev[0].request("REMOVE_NETWORK all")
hapd.disable()
dev[0].flush_scan_cache(freq=2432)
dev[0].flush_scan_cache()
def test_scan_and_bss_entry_removed(dev, apdev):
"""Last scan result and connect work processing on BSS entry update"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "open",
"eap_server": "1",
"wps_state": "2"})
bssid = apdev[0]['bssid']
wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
wpas.interface_add("wlan5", drv_params="force_connect_cmd=1")
# Add a BSS entry
dev[0].scan_for_bss(bssid, freq="2412")
wpas.scan_for_bss(bssid, freq="2412")
# Start a connect radio work with a blocking entry preventing this from
# proceeding; this stores a pointer to the selected BSS entry.
id = dev[0].request("RADIO_WORK add block-work")
w_id = wpas.request("RADIO_WORK add block-work")
dev[0].wait_event(["EXT-RADIO-WORK-START"], timeout=1)
wpas.wait_event(["EXT-RADIO-WORK-START"], timeout=1)
nid = dev[0].connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
w_nid = wpas.connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
time.sleep(0.1)
# Remove the BSS entry
dev[0].request("BSS_FLUSH 0")
wpas.request("BSS_FLUSH 0")
# Allow the connect radio work to continue. The bss entry stored in the
# pending connect work is now stale. This will result in the connection
# attempt failing since the BSS entry does not exist.
dev[0].request("RADIO_WORK done " + id)
wpas.request("RADIO_WORK done " + w_id)
ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1)
if ev is not None:
raise Exception("Unexpected connection")
dev[0].remove_network(nid)
ev = wpas.wait_event(["CTRL-EVENT-CONNECTED"], timeout=1)
if ev is not None:
raise Exception("Unexpected connection")
wpas.remove_network(w_nid)
time.sleep(0.5)
dev[0].request("BSS_FLUSH 0")
wpas.request("BSS_FLUSH 0")
# Add a BSS entry
dev[0].scan_for_bss(bssid, freq="2412")
wpas.scan_for_bss(bssid, freq="2412")
# Start a connect radio work with a blocking entry preventing this from
# proceeding; this stores a pointer to the selected BSS entry.
id = dev[0].request("RADIO_WORK add block-work")
w_id = wpas.request("RADIO_WORK add block-work")
dev[0].wait_event(["EXT-RADIO-WORK-START"], timeout=1)
wpas.wait_event(["EXT-RADIO-WORK-START"], timeout=1)
# Schedule a connection based on the current BSS entry.
dev[0].connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
wpas.connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
# Update scan results with results that have longer set of IEs so that new
# memory needs to be allocated for the BSS entry.
hapd.request("WPS_PBC")
time.sleep(0.1)
subprocess.call(['iw', dev[0].ifname, 'scan', 'trigger', 'freq', '2412'])
subprocess.call(['iw', wpas.ifname, 'scan', 'trigger', 'freq', '2412'])
time.sleep(0.1)
# Allow the connect radio work to continue. The bss entry stored in the
# pending connect work becomes stale during the scan and it must have been
# updated for the connection to work.
dev[0].request("RADIO_WORK done " + id)
wpas.request("RADIO_WORK done " + w_id)
dev[0].wait_connected(timeout=15, error="No connection (sme-connect)")
wpas.wait_connected(timeout=15, error="No connection (connect)")
dev[0].request("DISCONNECT")
wpas.request("DISCONNECT")
dev[0].flush_scan_cache()
wpas.flush_scan_cache()
@remote_compatible
def test_scan_reqs_with_non_scan_radio_work(dev, apdev):
"""SCAN commands while non-scan radio_work is in progress"""
id = dev[0].request("RADIO_WORK add test-work-a")
ev = dev[0].wait_event(["EXT-RADIO-WORK-START"])
if ev is None:
raise Exception("Timeout while waiting radio work to start")
if "OK" not in dev[0].request("SCAN"):
raise Exception("SCAN failed")
if "FAIL-BUSY" not in dev[0].request("SCAN"):
raise Exception("SCAN accepted while one is already pending")
if "FAIL-BUSY" not in dev[0].request("SCAN"):
raise Exception("SCAN accepted while one is already pending")
res = dev[0].request("RADIO_WORK show").splitlines()
count = 0
for l in res:
if "scan" in l:
count += 1
if count != 1:
logger.info(res)
raise Exception("Unexpected number of scan radio work items")
dev[0].dump_monitor()
dev[0].request("RADIO_WORK done " + id)
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=5)
if ev is None:
raise Exception("Scan did not start")
if "FAIL-BUSY" not in dev[0].request("SCAN"):
raise Exception("SCAN accepted while one is already in progress")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=10)
if ev is None:
raise Exception("Scan did not complete")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=0.2)
if ev is not None:
raise Exception("Unexpected scan started")
def test_scan_setband(dev, apdev):
"""Band selection for scan operations"""
try:
hapd = None
hapd2 = None
params = {"ssid": "test-setband",
"hw_mode": "a",
"channel": "36",
"country_code": "US"}
hapd = hostapd.add_ap(apdev[0], params)
bssid = apdev[0]['bssid']
params = {"ssid": "test-setband",
"hw_mode": "g",
"channel": "1"}
hapd2 = hostapd.add_ap(apdev[1], params)
bssid2 = apdev[1]['bssid']
if "FAIL" not in dev[0].request("SET setband FOO"):
raise Exception("Invalid set setband accepted")
if "OK" not in dev[0].request("SET setband AUTO"):
raise Exception("Failed to set setband")
if "OK" not in dev[1].request("SET setband 5G"):
raise Exception("Failed to set setband")
if "OK" not in dev[2].request("SET setband 2G"):
raise Exception("Failed to set setband")
# Allow a retry to avoid reporting errors during heavy load
for j in range(5):
for i in range(3):
dev[i].request("SCAN only_new=1")
for i in range(3):
ev = dev[i].wait_event(["CTRL-EVENT-SCAN-RESULTS"], 15)
if ev is None:
raise Exception("Scan timed out")
res0 = dev[0].request("SCAN_RESULTS")
res1 = dev[1].request("SCAN_RESULTS")
res2 = dev[2].request("SCAN_RESULTS")
if bssid in res0 and bssid2 in res0 and bssid in res1 and bssid2 in res2:
break
res = dev[0].request("SCAN_RESULTS")
if bssid not in res or bssid2 not in res:
raise Exception("Missing scan result(0)")
res = dev[1].request("SCAN_RESULTS")
if bssid not in res:
raise Exception("Missing scan result(1)")
if bssid2 in res:
raise Exception("Unexpected scan result(1)")
res = dev[2].request("SCAN_RESULTS")
if bssid2 not in res:
raise Exception("Missing scan result(2)")
if bssid in res:
raise Exception("Unexpected scan result(2)")
finally:
if hapd:
hapd.request("DISABLE")
if hapd2:
hapd2.request("DISABLE")
subprocess.call(['iw', 'reg', 'set', '00'])
for i in range(3):
dev[i].request("SET setband AUTO")
dev[i].flush_scan_cache()
@remote_compatible
def test_scan_hidden_many(dev, apdev):
"""scan_ssid=1 with large number of profile with hidden SSID"""
try:
_test_scan_hidden_many(dev, apdev)
finally:
dev[0].flush_scan_cache(freq=2432)
dev[0].flush_scan_cache()
dev[0].request("SCAN_INTERVAL 5")
def _test_scan_hidden_many(dev, apdev):
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan-ssid",
"ignore_broadcast_ssid": "1"})
bssid = apdev[0]['bssid']
dev[0].request("SCAN_INTERVAL 1")
for i in range(5):
id = dev[0].add_network()
dev[0].set_network_quoted(id, "ssid", "foo")
dev[0].set_network(id, "key_mgmt", "NONE")
dev[0].set_network(id, "disabled", "0")
dev[0].set_network(id, "scan_freq", "2412")
dev[0].set_network(id, "scan_ssid", "1")
dev[0].set_network_quoted(id, "ssid", "test-scan-ssid")
dev[0].set_network(id, "key_mgmt", "NONE")
dev[0].set_network(id, "disabled", "0")
dev[0].set_network(id, "scan_freq", "2412")
dev[0].set_network(id, "scan_ssid", "1")
for i in range(5):
id = dev[0].add_network()
dev[0].set_network_quoted(id, "ssid", "foo")
dev[0].set_network(id, "key_mgmt", "NONE")
dev[0].set_network(id, "disabled", "0")
dev[0].set_network(id, "scan_freq", "2412")
dev[0].set_network(id, "scan_ssid", "1")
dev[0].request("REASSOCIATE")
dev[0].wait_connected(timeout=30)
dev[0].request("REMOVE_NETWORK all")
hapd.disable()
def test_scan_random_mac(dev, apdev, params):
"""Random MAC address in scans"""
try:
_test_scan_random_mac(dev, apdev, params)
finally:
dev[0].request("MAC_RAND_SCAN all enable=0")
def _test_scan_random_mac(dev, apdev, params):
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
tests = ["",
"addr=foo",
"mask=foo",
"enable=1",
"all enable=1 mask=00:11:22:33:44:55",
"all enable=1 addr=00:11:22:33:44:55",
"all enable=1 addr=01:11:22:33:44:55 mask=ff:ff:ff:ff:ff:ff",
"all enable=1 addr=00:11:22:33:44:55 mask=fe:ff:ff:ff:ff:ff",
"enable=2 scan sched pno all",
"pno enable=1",
"all enable=2",
"foo"]
for args in tests:
if "FAIL" not in dev[0].request("MAC_RAND_SCAN " + args):
raise Exception("Invalid MAC_RAND_SCAN accepted: " + args)
if dev[0].get_driver_status_field('capa.mac_addr_rand_scan_supported') != '1':
raise HwsimSkip("Driver does not support random MAC address for scanning")
tests = ["all enable=1",
"all enable=1 addr=f2:11:22:33:44:55 mask=ff:ff:ff:ff:ff:ff",
"all enable=1 addr=f2:11:33:00:00:00 mask=ff:ff:ff:00:00:00"]
for args in tests:
dev[0].request("MAC_RAND_SCAN " + args)
dev[0].scan_for_bss(bssid, freq=2412, force_scan=True)
out = run_tshark(os.path.join(params['logdir'], "hwsim0.pcapng"),
"wlan.fc.type_subtype == 4", ["wlan.ta"])
if out is not None:
addr = out.splitlines()
logger.info("Probe Request frames seen from: " + str(addr))
if dev[0].own_addr() in addr:
raise Exception("Real address used to transmit Probe Request frame")
if "f2:11:22:33:44:55" not in addr:
raise Exception("Fully configured random address not seen")
found = False
for a in addr:
if a.startswith('f2:11:33'):
found = True
break
if not found:
raise Exception("Fixed OUI random address not seen")
def test_scan_random_mac_connected(dev, apdev, params):
"""Random MAC address in scans while connected"""
try:
_test_scan_random_mac_connected(dev, apdev, params)
finally:
dev[0].request("MAC_RAND_SCAN all enable=0")
def _test_scan_random_mac_connected(dev, apdev, params):
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
if dev[0].get_driver_status_field('capa.mac_addr_rand_scan_supported') != '1':
raise HwsimSkip("Driver does not support random MAC address for scanning")
dev[0].connect("test-scan", key_mgmt="NONE", scan_freq="2412")
hostapd.add_ap(apdev[1], {"ssid": "test-scan-2", "channel": "11"})
bssid1 = apdev[1]['bssid']
# Verify that scanning can be completed while connected even if that means
# disabling use of random MAC address.
dev[0].request("MAC_RAND_SCAN all enable=1")
dev[0].scan_for_bss(bssid1, freq=2462, force_scan=True)
@remote_compatible
def test_scan_trigger_failure(dev, apdev):
"""Scan trigger to the driver failing"""
if dev[0].get_status_field('wpa_state') == "SCANNING":
raise Exception("wpa_state was already SCANNING")
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
if "OK" not in dev[0].request("SET test_failure 1"):
raise Exception("Failed to set test_failure")
if "OK" not in dev[0].request("SCAN"):
raise Exception("SCAN command failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=10)
if ev is None:
raise Exception("Did not receive CTRL-EVENT-SCAN-FAILED event")
if "retry=1" in ev:
raise Exception("Unexpected scan retry indicated")
if dev[0].get_status_field('wpa_state') == "SCANNING":
raise Exception("wpa_state SCANNING not cleared")
id = dev[0].connect("test-scan", key_mgmt="NONE", scan_freq="2412",
only_add_network=True)
dev[0].select_network(id)
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=10)
if ev is None:
raise Exception("Did not receive CTRL-EVENT-SCAN-FAILED event")
if "retry=1" not in ev:
raise Exception("No scan retry indicated for connection")
if dev[0].get_status_field('wpa_state') == "SCANNING":
raise Exception("wpa_state SCANNING not cleared")
dev[0].request("SET test_failure 0")
dev[0].wait_connected()
dev[0].request("SET test_failure 1")
if "OK" not in dev[0].request("SCAN"):
raise Exception("SCAN command failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=10)
if ev is None:
raise Exception("Did not receive CTRL-EVENT-SCAN-FAILED event")
if "retry=1" in ev:
raise Exception("Unexpected scan retry indicated")
if dev[0].get_status_field('wpa_state') != "COMPLETED":
raise Exception("wpa_state COMPLETED not restored")
dev[0].request("SET test_failure 0")
@remote_compatible
def test_scan_specify_ssid(dev, apdev):
"""Control interface behavior on scan SSID parameter"""
dev[0].flush_scan_cache()
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-hidden",
"ignore_broadcast_ssid": "1"})
bssid = apdev[0]['bssid']
check_scan(dev[0], "freq=2412 use_id=1 ssid 414243")
bss = dev[0].get_bss(bssid)
if bss is not None and bss['ssid'] == 'test-hidden':
raise Exception("BSS entry for hidden AP present unexpectedly")
# Allow couple more retries to avoid reporting errors during heavy load
for i in range(5):
check_scan(dev[0], "freq=2412 ssid 414243 ssid 746573742d68696464656e ssid 616263313233 use_id=1")
bss = dev[0].get_bss(bssid)
if bss and 'test-hidden' in dev[0].request("SCAN_RESULTS"):
break
if bss is None:
raise Exception("BSS entry for hidden AP not found")
if 'test-hidden' not in dev[0].request("SCAN_RESULTS"):
raise Exception("Expected SSID not included in the scan results")
hapd.disable()
dev[0].flush_scan_cache(freq=2432)
dev[0].flush_scan_cache()
if "FAIL" not in dev[0].request("SCAN ssid foo"):
raise Exception("Invalid SCAN command accepted")
@remote_compatible
def test_scan_ap_scan_2_ap_mode(dev, apdev):
"""AP_SCAN 2 AP mode and scan()"""
try:
_test_scan_ap_scan_2_ap_mode(dev, apdev)
finally:
dev[0].request("AP_SCAN 1")
def _test_scan_ap_scan_2_ap_mode(dev, apdev):
if "OK" not in dev[0].request("AP_SCAN 2"):
raise Exception("Failed to set AP_SCAN 2")
id = dev[0].add_network()
dev[0].set_network(id, "mode", "2")
dev[0].set_network_quoted(id, "ssid", "wpas-ap-open")
dev[0].set_network(id, "key_mgmt", "NONE")
dev[0].set_network(id, "frequency", "2412")
dev[0].set_network(id, "scan_freq", "2412")
dev[0].set_network(id, "disabled", "0")
dev[0].select_network(id)
ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=5)
if ev is None:
raise Exception("AP failed to start")
with fail_test(dev[0], 1, "wpa_driver_nl80211_scan"):
if "OK" not in dev[0].request("SCAN freq=2412"):
raise Exception("SCAN command failed unexpectedly")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED",
"AP-DISABLED"], timeout=5)
if ev is None:
raise Exception("CTRL-EVENT-SCAN-FAILED not seen")
if "AP-DISABLED" in ev:
raise Exception("Unexpected AP-DISABLED event")
if "retry=1" in ev:
# Wait for the retry to scan happen
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED",
"AP-DISABLED"], timeout=5)
if ev is None:
raise Exception("CTRL-EVENT-SCAN-FAILED not seen - retry")
if "AP-DISABLED" in ev:
raise Exception("Unexpected AP-DISABLED event - retry")
dev[1].connect("wpas-ap-open", key_mgmt="NONE", scan_freq="2412")
dev[1].request("DISCONNECT")
dev[1].wait_disconnected()
dev[0].request("DISCONNECT")
dev[0].wait_disconnected()
def test_scan_bss_expiration_on_ssid_change(dev, apdev):
"""BSS entry expiration when AP changes SSID"""
dev[0].flush_scan_cache()
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412")
hapd.request("DISABLE")
hapd = hostapd.add_ap(apdev[0], {"ssid": "open"})
if "OK" not in dev[0].request("BSS_EXPIRE_COUNT 3"):
raise Exception("BSS_EXPIRE_COUNT failed")
dev[0].scan(freq="2412")
dev[0].scan(freq="2412")
if "OK" not in dev[0].request("BSS_EXPIRE_COUNT 2"):
raise Exception("BSS_EXPIRE_COUNT failed")
res = dev[0].request("SCAN_RESULTS")
if "test-scan" not in res:
raise Exception("The first SSID not in scan results")
if "open" not in res:
raise Exception("The second SSID not in scan results")
dev[0].connect("open", key_mgmt="NONE")
dev[0].request("BSS_FLUSH 0")
res = dev[0].request("SCAN_RESULTS")
if "test-scan" in res:
raise Exception("The BSS entry with the old SSID was not removed")
dev[0].request("DISCONNECT")
dev[0].wait_disconnected()
def test_scan_dfs(dev, apdev, params):
"""Scan on DFS channels"""
try:
_test_scan_dfs(dev, apdev, params)
finally:
clear_regdom_dev(dev)
def _test_scan_dfs(dev, apdev, params):
subprocess.call(['iw', 'reg', 'set', 'US'])
for i in range(2):
for j in range(5):
ev = dev[i].wait_event(["CTRL-EVENT-REGDOM-CHANGE"], timeout=5)
if ev is None:
raise Exception("No regdom change event")
if "alpha2=US" in ev:
break
dev[i].dump_monitor()
if "OK" not in dev[0].request("SCAN"):
raise Exception("SCAN command failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"])
if ev is None:
raise Exception("Scan did not complete")
if "OK" not in dev[0].request("SCAN freq=2412,5180,5260,5500,5600,5745"):
raise Exception("SCAN command failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"])
if ev is None:
raise Exception("Scan did not complete")
out = run_tshark(os.path.join(params['logdir'], "hwsim0.pcapng"),
"wlan.fc.type_subtype == 4", ["radiotap.channel.freq"])
if out is not None:
freq = out.splitlines()
freq = [int(f) for f in freq]
freq = list(set(freq))
freq.sort()
logger.info("Active scan seen on channels: " + str(freq))
for f in freq:
if (f >= 5260 and f <= 5320) or (f >= 5500 and f <= 5700):
raise Exception("Active scan on DFS channel: %d" % f)
if f in [2467, 2472]:
raise Exception("Active scan on US-disallowed channel: %d" % f)
@remote_compatible
def test_scan_abort(dev, apdev):
"""Aborting a full scan"""
dev[0].request("SCAN")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"])
if ev is None:
raise Exception("Scan did not start")
if "OK" not in dev[0].request("ABORT_SCAN"):
raise Exception("ABORT_SCAN command failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=2)
if ev is None:
raise Exception("Scan did not terminate")
@remote_compatible
def test_scan_abort_on_connect(dev, apdev):
"""Aborting a full scan on connection request"""
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412")
dev[0].dump_monitor()
dev[0].request("SCAN")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"])
if ev is None:
raise Exception("Scan did not start")
dev[0].connect("test-scan", key_mgmt="NONE")
@remote_compatible
def test_scan_ext(dev, apdev):
"""Custom IE in Probe Request frame"""
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
try:
if "OK" not in dev[0].request("VENDOR_ELEM_ADD 14 dd050011223300"):
raise Exception("VENDOR_ELEM_ADD failed")
check_scan(dev[0], "freq=2412 use_id=1")
finally:
dev[0].request("VENDOR_ELEM_REMOVE 14 *")
def test_scan_fail(dev, apdev):
"""Scan failures"""
with fail_test(dev[0], 1, "wpa_driver_nl80211_scan"):
dev[0].request("DISCONNECT")
if "OK" not in dev[0].request("SCAN freq=2412"):
raise Exception("SCAN failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=5)
if ev is None:
raise Exception("Did not see scan failure event")
dev[0].dump_monitor()
for i in range(1, 5):
with alloc_fail(dev[0], i,
"wpa_scan_clone_params;wpa_supplicant_trigger_scan"):
if "OK" not in dev[0].request("SCAN ssid 112233 freq=2412"):
raise Exception("SCAN failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=5)
if ev is None:
raise Exception("Did not see scan failure event")
dev[0].dump_monitor()
with alloc_fail(dev[0], 1, "radio_add_work;wpa_supplicant_trigger_scan"):
if "OK" not in dev[0].request("SCAN freq=2412"):
raise Exception("SCAN failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=5)
if ev is None:
raise Exception("Did not see scan failure event")
dev[0].dump_monitor()
try:
if "OK" not in dev[0].request("SET filter_ssids 1"):
raise Exception("SET failed")
id = dev[0].connect("test-scan", key_mgmt="NONE", only_add_network=True)
with alloc_fail(dev[0], 1, "wpa_supplicant_build_filter_ssids"):
# While the filter list cannot be created due to memory allocation
# failure, this scan is expected to be completed without SSID
# filtering.
if "OK" not in dev[0].request("SCAN freq=2412"):
raise Exception("SCAN failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"])
if ev is None:
raise Exception("Scan did not complete")
dev[0].remove_network(id)
finally:
dev[0].request("SET filter_ssids 0")
dev[0].dump_monitor()
with alloc_fail(dev[0], 1, "nl80211_get_scan_results"):
if "OK" not in dev[0].request("SCAN freq=2412"):
raise Exception("SCAN failed")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=5)
if ev is None:
raise Exception("Did not see scan started event")
wait_fail_trigger(dev[0], "GET_ALLOC_FAIL")
dev[0].dump_monitor()
try:
if "OK" not in dev[0].request("SET setband 2G"):
raise Exception("SET setband failed")
with alloc_fail(dev[0], 1, "=wpa_setband_scan_freqs_list"):
# While the frequency list cannot be created due to memory
# allocation failure, this scan is expected to be completed without
# frequency filtering.
if "OK" not in dev[0].request("SCAN"):
raise Exception("SCAN failed")
wait_fail_trigger(dev[0], "GET_ALLOC_FAIL")
dev[0].request("ABORT_SCAN")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"])
if ev is None:
raise Exception("Scan did not complete")
finally:
dev[0].request("SET setband AUTO")
dev[0].dump_monitor()
wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
wpas.interface_add("wlan5")
wpas.request("SET preassoc_mac_addr 1")
with fail_test(wpas, 1, "nl80211_set_mac_addr;wpas_trigger_scan_cb"):
if "OK" not in wpas.request("SCAN freq=2412"):
raise Exception("SCAN failed")
ev = wpas.wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=5)
if ev is None:
raise Exception("Did not see scan failure event")
wpas.request("SET preassoc_mac_addr 0")
wpas.dump_monitor()
hapd = hostapd.add_ap(apdev[0], {"ssid": "open"})
with alloc_fail(dev[0], 1, "wpa_bss_add"):
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412")
def test_scan_fail_type_only(dev, apdev):
"""Scan failures for TYPE=ONLY"""
with fail_test(dev[0], 1, "wpa_driver_nl80211_scan"):
dev[0].request("SCAN TYPE=ONLY freq=2417")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-FAILED"], timeout=5)
if ev is None:
raise Exception("Scan trigger failure not reported")
# Verify that scan_only_handler() does not get left set as the
# wpa_s->scan_res_handler in failure case.
hapd = hostapd.add_ap(apdev[0], {"ssid": "open"})
dev[0].connect("open", key_mgmt="NONE", scan_freq="2412")
@remote_compatible
def test_scan_freq_list(dev, apdev):
"""Scan with SET freq_list and scan_cur_freq"""
try:
if "OK" not in dev[0].request("SET freq_list 2412 2417"):
raise Exception("SET freq_list failed")
check_scan(dev[0], "use_id=1")
finally:
dev[0].request("SET freq_list ")
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
dev[0].connect("test-scan", key_mgmt="NONE", scan_freq="2412")
try:
if "OK" not in dev[0].request("SET scan_cur_freq 1"):
raise Exception("SET scan_cur_freq failed")
check_scan(dev[0], "use_id=1")
finally:
dev[0].request("SET scan_cur_freq 0")
dev[0].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
def test_scan_bss_limit(dev, apdev):
"""Scan and wpa_supplicant BSS entry limit"""
try:
_test_scan_bss_limit(dev, apdev)
finally:
dev[0].request("SET bss_max_count 200")
pass
def _test_scan_bss_limit(dev, apdev):
dev[0].flush_scan_cache()
# Trigger 'Increasing the MAX BSS count to 2 because all BSSes are in use.
# We should normally not get here!' message by limiting the maximum BSS
# count to one so that the second AP would not fit in the BSS list and the
# first AP cannot be removed from the list since it is still in use.
dev[0].request("SET bss_max_count 1")
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
dev[0].connect("test-scan", key_mgmt="NONE", scan_freq="2412")
hapd2 = hostapd.add_ap(apdev[1], {"ssid": "test-scan-2",
"channel": "6"})
dev[0].scan_for_bss(apdev[1]['bssid'], freq=2437, force_scan=True)
def run_scan(dev, bssid, exp_freq):
for i in range(5):
dev.request("SCAN freq=2412,2437,2462")
ev = dev.wait_event(["CTRL-EVENT-SCAN-RESULTS"])
if ev is None:
raise Exception("Scan did not complete")
bss = dev.get_bss(bssid)
freq = int(bss['freq']) if bss else 0
if freq == exp_freq:
break
if freq != exp_freq:
raise Exception("BSS entry shows incorrect frequency: %d != %d" % (freq, exp_freq))
def test_scan_chan_switch(dev, apdev):
"""Scanning and AP changing channels"""
# This test verifies that wpa_supplicant updates its local BSS table based
# on the correct cfg80211 scan entry in cases where the cfg80211 BSS table
# has multiple (one for each frequency) BSS entries for the same BSS.
csa_supported(dev[0])
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan", "channel": "1"})
csa_supported(hapd)
bssid = hapd.own_addr()
logger.info("AP channel switch while not connected")
run_scan(dev[0], bssid, 2412)
dev[0].dump_monitor()
switch_channel(hapd, 1, 2437)
run_scan(dev[0], bssid, 2437)
dev[0].dump_monitor()
switch_channel(hapd, 1, 2462)
run_scan(dev[0], bssid, 2462)
dev[0].dump_monitor()
logger.info("AP channel switch while connected")
dev[0].connect("test-scan", key_mgmt="NONE", scan_freq="2412 2437 2462")
run_scan(dev[0], bssid, 2462)
dev[0].dump_monitor()
switch_channel(hapd, 2, 2437)
wait_channel_switch(dev[0], 2437)
dev[0].dump_monitor()
run_scan(dev[0], bssid, 2437)
dev[0].dump_monitor()
switch_channel(hapd, 2, 2412)
wait_channel_switch(dev[0], 2412)
dev[0].dump_monitor()
run_scan(dev[0], bssid, 2412)
dev[0].dump_monitor()
def test_scan_new_only(dev, apdev):
"""Scan and only_new=1 multiple times"""
try:
_test_scan_new_only(dev, apdev)
finally:
dev[0].set("ignore_old_scan_res", "0")
def _test_scan_new_only(dev, apdev):
dev[0].flush_scan_cache()
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
dev[0].set("ignore_old_scan_res", "1")
# Get the BSS added to cfg80211 BSS list
bssid = hapd.own_addr()
dev[0].scan_for_bss(bssid, freq=2412)
bss = dev[0].get_bss(bssid)
idx1 = bss['update_idx']
dev[0].scan_for_bss(bssid, freq=2412, force_scan=True)
dev[0].scan_for_bss(bssid, freq=2412, force_scan=True)
bss = dev[0].get_bss(bssid)
idx2 = bss['update_idx']
if int(idx2) <= int(idx1):
raise Exception("Scan result update_idx did not increase")
# Disable AP to ensure there are no new scan results after this.
hapd.disable()
# Try to scan multiple times to verify that old scan results do not get
# accepted as new.
for i in range(10):
dev[0].scan(freq=2412)
bss = dev[0].get_bss(bssid)
if bss:
idx = bss['update_idx']
if int(idx) > int(idx2):
raise Exception("Unexpected update_idx increase")
def test_scan_flush(dev, apdev):
"""Ongoing scan and FLUSH"""
dev[0].flush_scan_cache()
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
dev[0].dump_monitor()
dev[0].request("SCAN TYPE=ONLY freq=2412-2472 passive=1")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-STARTED"], timeout=10)
if ev is None:
raise Exception("Scan did not start")
time.sleep(0.1)
dev[0].request("FLUSH")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS",
"CTRL-EVENT-SCAN-FAILED",
"CTRL-EVENT-BSS-ADDED"], timeout=10)
if ev is None:
raise Exception("Scan did not complete")
if "CTRL-EVENT-BSS-ADDED" in ev:
raise Exception("Unexpected BSS entry addition after FLUSH")
def test_scan_ies(dev, apdev):
"""Scan and both Beacon and Probe Response frame IEs"""
dev[0].flush_scan_cache()
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan",
"beacon_int": "20"})
bssid = hapd.own_addr()
dev[0].dump_monitor()
for i in range(10):
dev[0].request("SCAN TYPE=ONLY freq=2412 passive=1")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=15)
if ev is None:
raise Exception("Scan did not complete")
if dev[0].get_bss(bssid):
break
for i in range(10):
dev[0].scan_for_bss(bssid, freq=2412, force_scan=True)
bss = dev[0].get_bss(bssid)
if 'beacon_ie' in bss:
if bss['ie'] != bss['beacon_ie']:
break
if not bss or 'beacon_ie' not in bss:
raise Exception("beacon_ie not present")
ie = parse_ie(bss['ie'])
logger.info("ie: " + str(list(ie.keys())))
beacon_ie = parse_ie(bss['beacon_ie'])
logger.info("beacon_ie: " + str(list(ie.keys())))
if bss['ie'] == bss['beacon_ie']:
raise Exception("Both ie and beacon_ie show same data")
def test_scan_parsing(dev, apdev):
"""Scan result parsing"""
if "OK" not in dev[0].request("DRIVER_EVENT SCAN_RES START"):
raise Exception("DRIVER_EVENT SCAN_RES START failed")
if "FAIL" not in dev[0].request("DRIVER_EVENT SCAN_RES foo "):
raise Exception("Invalid DRIVER_EVENT SCAN_RES accepted")
tests = ["",
"flags=ffffffff",
"bssid=02:03:04:05:06:07",
"freq=1234",
"beacon_int=102",
"caps=1234",
"qual=10",
"noise=10",
"level=10",
"tsf=1122334455667788",
"age=123",
"est_throughput=100",
"snr=10",
"parent_tsf=1122334455667788",
"tsf_bssid=02:03:04:05:06:07",
"ie=00",
"beacon_ie=00",
# Too long SSID
"bssid=02:ff:00:00:00:01 ie=0033" + 33*'FF',
# All parameters
"flags=ffffffff bssid=02:ff:00:00:00:02 freq=1234 beacon_int=102 caps=1234 qual=10 noise=10 level=10 tsf=1122334455667788 age=123456 est_throughput=100 snr=10 parent_tsf=1122334455667788 tsf_bssid=02:03:04:05:06:07 ie=000474657374 beacon_ie=000474657374",
# Beacon IEs truncated
"bssid=02:ff:00:00:00:03 ie=0000 beacon_ie=0003ffff",
# Probe Response IEs truncated
"bssid=02:ff:00:00:00:04 ie=00000101 beacon_ie=0000",
# DMG (invalid caps)
"bssid=02:ff:00:00:00:05 freq=58320 ie=0003646d67",
# DMG (IBSS)
"bssid=02:ff:00:00:00:06 freq=60480 caps=0001 ie=0003646d67",
# DMG (PBSS)
"bssid=02:ff:00:00:00:07 freq=62640 caps=0002 ie=0003646d67",
# DMG (AP)
"bssid=02:ff:00:00:00:08 freq=64800 caps=0003 ie=0003646d67",
# Test BSS for updates
"bssid=02:ff:00:00:00:09 freq=2412 caps=0011 level=1 ie=0003757064010182",
# Minimal BSS data
"bssid=02:ff:00:00:00:00 ie=0000"]
for t in tests:
if "OK" not in dev[0].request("DRIVER_EVENT SCAN_RES BSS " + t):
raise Exception("DRIVER_EVENT SCAN_RES BSS failed")
if "OK" not in dev[0].request("DRIVER_EVENT SCAN_RES END"):
raise Exception("DRIVER_EVENT SCAN_RES END failed")
res = dev[0].request("SCAN_RESULTS")
logger.info("SCAN_RESULTS:\n" + res)
bss = []
res = dev[0].request("BSS FIRST")
if "FAIL" in res:
raise Exception("BSS FIRST failed")
while "\nbssid=" in res:
logger.info("BSS output:\n" + res)
bssid = None
id = None
for val in res.splitlines():
if val.startswith("id="):
id = val.split('=')[1]
if val.startswith("bssid="):
bssid = val.split('=')[1]
if bssid is None or id is None:
raise Exception("Missing id or bssid line")
bss.append(bssid)
res = dev[0].request("BSS NEXT-" + id)
logger.info("Discovered BSSs: " + str(bss))
invalid_bss = ["02:03:04:05:06:07", "02:ff:00:00:00:01"]
valid_bss = ["02:ff:00:00:00:00", "02:ff:00:00:00:02",
"02:ff:00:00:00:03", "02:ff:00:00:00:04",
"02:ff:00:00:00:05", "02:ff:00:00:00:06",
"02:ff:00:00:00:07", "02:ff:00:00:00:08",
"02:ff:00:00:00:09"]
for bssid in invalid_bss:
if bssid in bss:
raise Exception("Invalid BSS included: " + bssid)
for bssid in valid_bss:
if bssid not in bss:
raise Exception("Valid BSS missing: " + bssid)
logger.info("Update BSS parameters")
if "OK" not in dev[0].request("DRIVER_EVENT SCAN_RES START"):
raise Exception("DRIVER_EVENT SCAN_RES START failed")
if "OK" not in dev[0].request("DRIVER_EVENT SCAN_RES BSS bssid=02:ff:00:00:00:09 freq=2412 caps=0002 level=2 ie=000375706401028204"):
raise Exception("DRIVER_EVENT SCAN_RES BSS failed")
if "OK" not in dev[0].request("DRIVER_EVENT SCAN_RES END"):
raise Exception("DRIVER_EVENT SCAN_RES END failed")
res = dev[0].request("BSS 02:ff:00:00:00:09")
logger.info("Updated BSS:\n" + res)
def test_scan_specific_bssid(dev, apdev):
"""Scan for a specific BSSID"""
dev[0].flush_scan_cache()
hapd = hostapd.add_ap(apdev[0], {"ssid": "test-scan",
"beacon_int": "1000"})
bssid = hapd.own_addr()
time.sleep(0.1)
dev[0].request("SCAN TYPE=ONLY freq=2412 bssid=02:ff:ff:ff:ff:ff")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=10)
if ev is None:
raise Exception("Scan did not complete")
bss1 = dev[0].get_bss(bssid)
for i in range(10):
dev[0].request("SCAN TYPE=ONLY freq=2412 bssid=" + bssid)
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=10)
if ev is None:
raise Exception("Scan did not complete")
bss2 = dev[0].get_bss(bssid)
if bss2:
break
if not bss2:
raise Exception("Did not find BSS")
if bss1 and 'beacon_ie' in bss1 and 'ie' in bss1 and bss1['beacon_ie'] != bss1['ie']:
raise Exception("First scan for unknown BSSID returned unexpected response")
if bss2 and 'beacon_ie' in bss2 and 'ie' in bss2 and bss2['beacon_ie'] == bss2['ie']:
raise Exception("Second scan did find Probe Response frame")
def test_scan_probe_req_events(dev, apdev):
"""Probe Request frame RX events from hostapd"""
hapd = hostapd.add_ap(apdev[0], {"ssid": "open"})
hapd2 = hostapd.Hostapd(apdev[0]['ifname'])
if "OK" not in hapd2.mon.request("ATTACH probe_rx_events=1"):
raise Exception("Failed to register for events")
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412", force_scan=True)
ev = hapd2.wait_event(["RX-PROBE-REQUEST"], timeout=5)
if ev is None:
raise Exception("RX-PROBE-REQUEST not reported")
if "sa=" + dev[0].own_addr() not in ev:
raise Exception("Unexpected event parameters: " + ev)
ev = hapd.wait_event(["RX-PROBE-REQUEST"], timeout=0.1)
if ev is not None:
raise Exception("Unexpected RX-PROBE-REQUEST")
if "OK" not in hapd2.mon.request("ATTACH probe_rx_events=0"):
raise Exception("Failed to update event registration")
dev[0].scan_for_bss(apdev[0]['bssid'], freq="2412", force_scan=True)
ev = hapd2.wait_event(["RX-PROBE-REQUEST"], timeout=0.5)
if ev is not None:
raise Exception("Unexpected RX-PROBE-REQUEST")
tests = ["probe_rx_events", "probe_rx_events=-1", "probe_rx_events=2"]
for val in tests:
if "FAIL" not in hapd2.mon.request("ATTACH " + val):
raise Exception("Invalid ATTACH command accepted")
def elem_capab(capab):
# Nontransmitted BSSID Capability element (83 = 0x53)
return struct.pack('<BBH', 83, 2, capab)
def elem_ssid(ssid):
# SSID element
return struct.pack('BB', 0, len(ssid)) + ssid.encode()
def elem_bssid_index(index):
# Multiple BSSID-index element (85 = 0x55)
return struct.pack('BBB', 85, 1, index)
def elem_multibssid(profiles, max_bssid_indic):
# TODO: add support for fragmenting over multiple Multiple BSSID elements
if 1 + len(profiles) > 255:
raise Exception("Too long Multiple BSSID element")
elem = struct.pack('BBB', 71, 1 + len(profiles), max_bssid_indic) + profiles
return binascii.hexlify(elem).decode()
def run_scans(dev, check):
for i in range(2):
dev.request("SCAN TYPE=ONLY freq=2412")
ev = dev.wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=10)
if ev is None:
raise Exception("Scan did not complete")
# TODO: Check IEs
for (bssid, ssid, capab) in check:
bss = dev.get_bss(bssid)
if bss is None:
raise Exception("AP " + bssid + " missing from scan results")
logger.info("AP " + bssid + ": " + str(bss))
if bss['ssid'] != ssid:
raise Exception("Unexpected AP " + bssid + " SSID")
if int(bss['capabilities'], 16) != capab:
raise Exception("Unexpected AP " + bssid + " capabilities")
def check_multibss_sta_capa(dev):
res = dev.get_capability("multibss")
if res is None or 'MULTIBSS-STA' not in res:
raise HwsimSkip("Multi-BSS STA functionality not supported")
def test_scan_multi_bssid(dev, apdev):
"""Scan and Multiple BSSID element"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
params = {"ssid": "test-scan"}
# Max BSSID Indicator 0 (max 1 BSSID) and no subelements
params['vendor_elements'] = elem_multibssid(b'', 0)
hostapd.add_ap(apdev[0], params)
params = {"ssid": "test-scan"}
elems = elem_capab(0x0401) + elem_ssid("1") + elem_bssid_index(1)
profile1 = struct.pack('BB', 0, len(elems)) + elems
params['vendor_elements'] = elem_multibssid(profile1, 1)
hostapd.add_ap(apdev[1], params)
bssid0 = apdev[0]['bssid']
bssid1 = apdev[1]['bssid']
check = [(bssid0, 'test-scan', 0x401),
(bssid1, 'test-scan', 0x401),
(bssid1[0:16] + '1', '1', 0x401)]
run_scans(dev[0], check)
def test_scan_multi_bssid_2(dev, apdev):
"""Scan and Multiple BSSID element (2)"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
params = {"ssid": "transmitted"}
# Duplicated entry for the transmitted BSS (not a normal use case)
elems = elem_capab(1) + elem_ssid("transmitted") + elem_bssid_index(0)
profile1 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(1) + elem_ssid("nontransmitted") + elem_bssid_index(1)
profile2 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(1) + elem_ssid("nontransmitted_2") + elem_bssid_index(2)
profile3 = struct.pack('BB', 0, len(elems)) + elems
profiles = profile1 + profile2 + profile3
params['vendor_elements'] = elem_multibssid(profiles, 4)
hostapd.add_ap(apdev[0], params)
bssid = apdev[0]['bssid']
check = [(bssid, 'transmitted', 0x401),
(bssid[0:16] + '1', 'nontransmitted', 0x1),
(bssid[0:16] + '2', 'nontransmitted_2', 0x1)]
run_scans(dev[0], check)
def test_scan_multi_bssid_3(dev, apdev):
"""Scan and Multiple BSSID element (3)"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
params = {"ssid": "transmitted"}
# Duplicated nontransmitted BSS (not a normal use case)
elems = elem_capab(1) + elem_ssid("nontransmitted") + elem_bssid_index(1)
profile1 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(1) + elem_ssid("nontransmitted") + elem_bssid_index(1)
profile2 = struct.pack('BB', 0, len(elems)) + elems
profiles = profile1 + profile2
params['vendor_elements'] = elem_multibssid(profiles, 2)
hostapd.add_ap(apdev[0], params)
bssid = apdev[0]['bssid']
check = [(bssid, 'transmitted', 0x401),
(bssid[0:16] + '1', 'nontransmitted', 0x1)]
run_scans(dev[0], check)
def test_scan_multi_bssid_4(dev, apdev):
"""Scan and Multiple BSSID element (3)"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
# Transmitted BSSID is not the first one in the block
bssid = apdev[0]['bssid']
hapd = None
try:
params = {"ssid": "transmitted",
"bssid": bssid[0:16] + '1'}
elems = elem_capab(1) + elem_ssid("1") + elem_bssid_index(1)
profile1 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(1) + elem_ssid("2") + elem_bssid_index(2)
profile2 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(1) + elem_ssid("3") + elem_bssid_index(3)
profile3 = struct.pack('BB', 0, len(elems)) + elems
profiles = profile1 + profile2 + profile3
params['vendor_elements'] = elem_multibssid(profiles, 2)
hapd = hostapd.add_ap(apdev[0], params)
check = [(bssid[0:16] + '1', 'transmitted', 0x401),
(bssid[0:16] + '2', '1', 0x1),
(bssid[0:16] + '3', '2', 0x1),
(bssid[0:16] + '0', '3', 0x1)]
run_scans(dev[0], check)
finally:
if hapd:
hapd.disable()
hapd.set('bssid', bssid)
hapd.enable()
def test_scan_multi_bssid_check_ie(dev, apdev):
"""Scan and check if nontransmitting BSS inherits IE from transmitting BSS"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
params = {"ssid": "transmitted"}
# Duplicated entry for the transmitted BSS (not a normal use case)
elems = elem_capab(1) + elem_ssid("transmitted") + elem_bssid_index(0)
profile1 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(1) + elem_ssid("nontransmitted") + elem_bssid_index(1)
profile2 = struct.pack('BB', 0, len(elems)) + elems
profiles = profile1 + profile2
params['vendor_elements'] = elem_multibssid(profiles, 2)
hostapd.add_ap(apdev[0], params)
bssid = apdev[0]['bssid']
for i in range(10):
dev[0].request("SCAN TYPE=ONLY freq=2412 passive=1")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=15)
if ev is None:
raise Exception("Scan did not complete")
if dev[0].get_bss(bssid):
break
for i in range(10):
dev[0].scan_for_bss(bssid, freq=2412, force_scan=True)
bss = dev[0].get_bss(bssid)
if 'beacon_ie' in bss:
break
trans_bss = dev[0].get_bss(bssid)
if trans_bss is None:
raise Exception("AP " + bssid + " missing from scan results")
if not trans_bss or 'beacon_ie' not in trans_bss:
raise Exception("beacon_ie not present in trans_bss")
beacon_ie = parse_ie(trans_bss['beacon_ie'])
logger.info("trans_bss beacon_ie: " + str(list(beacon_ie.keys())))
bssid = bssid[0:16] + '1'
nontrans_bss1 = dev[0].get_bss(bssid)
if nontrans_bss1 is None:
raise Exception("AP " + bssid + " missing from scan results")
if not trans_bss or 'beacon_ie' not in nontrans_bss1:
raise Exception("beacon_ie not present in nontrans_bss1")
nontx_beacon_ie = parse_ie(nontrans_bss1['beacon_ie'])
logger.info("nontrans_bss1 beacon_ie: " + str(list(nontx_beacon_ie.keys())))
if 71 in list(beacon_ie.keys()):
ie_list = list(beacon_ie.keys())
ie_list.remove(71)
nontx_ie_list = list(nontx_beacon_ie.keys())
try:
nontx_ie_list.remove(85)
except ValueError:
pass
if sorted(ie_list) != sorted(nontx_ie_list):
raise Exception("check IE failed")
def elem_fms1():
# this FMS IE has 1 FMS counter
fms_counters = struct.pack('B', 0x39)
fms_ids = struct.pack('B', 0x01)
return struct.pack('BBB', 86, 3, 1) + fms_counters + fms_ids
def elem_fms2():
# this FMS IE has 2 FMS counters
fms_counters = struct.pack('BB', 0x29, 0x32)
fms_ids = struct.pack('BB', 0x01, 0x02)
return struct.pack('BBB', 86, 5, 2) + fms_counters + fms_ids
def test_scan_multi_bssid_fms(dev, apdev):
"""Non-transmitting BSS has different FMS IE from transmitting BSS"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
params = {"ssid": "transmitted"}
# construct transmitting BSS Beacon with FMS IE
elems = elem_capab(1) + elem_ssid("transmitted") + elem_bssid_index(0) + elem_fms1()
profile1 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(1) + elem_ssid("nontransmitted") + elem_bssid_index(1) + elem_fms2()
profile2 = struct.pack('BB', 0, len(elems)) + elems
profiles = profile1 + profile2
params['vendor_elements'] = elem_multibssid(profiles, 2) + binascii.hexlify(elem_fms1()).decode()
hostapd.add_ap(apdev[0], params)
bssid = apdev[0]['bssid']
for i in range(10):
dev[0].request("SCAN TYPE=ONLY freq=2412 passive=1")
ev = dev[0].wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=15)
if ev is None:
raise Exception("Scan did not complete")
if dev[0].get_bss(bssid):
break
for i in range(10):
dev[0].scan_for_bss(bssid, freq=2412, force_scan=True)
bss = dev[0].get_bss(bssid)
if 'beacon_ie' in bss:
break
trans_bss = dev[0].get_bss(bssid)
if trans_bss is None:
raise Exception("AP " + bssid + " missing from scan results")
if not trans_bss or 'beacon_ie' not in trans_bss:
raise Exception("beacon_ie not present in trans_bss")
beacon_ie = parse_ie(trans_bss['beacon_ie'])
trans_bss_fms = beacon_ie[86]
logger.info("trans_bss fms ie: " + binascii.hexlify(trans_bss_fms).decode())
bssid = bssid[0:16] + '1'
nontrans_bss1 = dev[0].get_bss(bssid)
if nontrans_bss1 is None:
raise Exception("AP " + bssid + " missing from scan results")
if not nontrans_bss1 or 'beacon_ie' not in nontrans_bss1:
raise Exception("beacon_ie not present in nontrans_bss1")
nontrans_beacon_ie = parse_ie(nontrans_bss1['beacon_ie'])
nontrans_bss_fms = nontrans_beacon_ie[86]
logger.info("nontrans_bss fms ie: " + binascii.hexlify(nontrans_bss_fms).decode())
if binascii.hexlify(trans_bss_fms) == binascii.hexlify(nontrans_bss_fms):
raise Exception("Nontrans BSS has the same FMS IE as trans BSS")
def test_scan_multiple_mbssid_ie(dev, apdev):
"""Transmitting BSS has 2 MBSSID IE"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
bssid = apdev[0]['bssid']
logger.info("bssid: " + bssid)
hapd = None
# construct 2 MBSSID IEs, each MBSSID IE contains 1 profile
params = {"ssid": "transmitted",
"bssid": bssid}
elems = elem_capab(1) + elem_ssid("1") + elem_bssid_index(1)
profile1 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(2) + elem_ssid("2") + elem_bssid_index(2)
profile2 = struct.pack('BB', 0, len(elems)) + elems
params['vendor_elements'] = elem_multibssid(profile1, 2) + elem_multibssid(profile2, 2)
hapd = hostapd.add_ap(apdev[0], params)
check = [(bssid, 'transmitted', 0x401),
(bssid[0:16] + '1', '1', 0x1),
(bssid[0:16] + '2', '2', 0x2)]
run_scans(dev[0], check)
def test_scan_mbssid_hidden_ssid(dev, apdev):
"""Non-transmitting BSS has hidden SSID"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
bssid = apdev[0]['bssid']
logger.info("bssid: " + bssid)
hapd = None
# construct 2 MBSSID IEs, each MBSSID IE contains 1 profile
params = {"ssid": "transmitted",
"bssid": bssid}
elems = elem_capab(1) + elem_ssid("") + elem_bssid_index(1)
profile1 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(2) + elem_ssid("2") + elem_bssid_index(2)
profile2 = struct.pack('BB', 0, len(elems)) + elems
profiles = profile1 + profile2
params['vendor_elements'] = elem_multibssid(profiles, 2)
hapd = hostapd.add_ap(apdev[0], params)
check = [(bssid, 'transmitted', 0x401),
(bssid[0:16] + '1', '', 0x1),
(bssid[0:16] + '2', '2', 0x2)]
run_scans(dev[0], check)
def test_connect_mbssid_open_1(dev, apdev):
"""Connect to transmitting and nontransmitting BSS in open mode"""
check_multibss_sta_capa(dev[0])
dev[0].flush_scan_cache()
bssid = apdev[0]['bssid']
params = {"ssid": "transmitted"}
elems = elem_capab(1) + elem_ssid("nontransmitted") + elem_bssid_index(1)
profile1 = struct.pack('BB', 0, len(elems)) + elems
elems = elem_capab(1) + elem_ssid("nontransmitted_2") + elem_bssid_index(2)
profile2 = struct.pack('BB', 0, len(elems)) + elems
profiles = profile1 + profile2
params['vendor_elements'] = elem_multibssid(profiles, 4)
hostapd.add_ap(apdev[0], params)
dev[0].connect("transmitted", key_mgmt="NONE", scan_freq="2412")
dev[0].request("REMOVE_NETWORK all")
dev[0].wait_disconnected()
dev[0].dump_monitor()
dev[0].connect("nontransmitted", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
ev = dev[0].wait_event(["SME: Trying to authenticate"], timeout=10)
if ev is None:
raise Exception("Connection attempt to nontransmitted BSS not started")
if "02:00:00:00:03:01 (SSID='nontransmitted'" not in ev:
raise Exception("Unexpected authentication target")
# hostapd does not yet support Multiple-BSSID, so only verify that STA is
# able to start connection attempt.
dev[0].request("REMOVE_NETWORK all")
dev[0].dump_monitor()
dev[0].connect("nontransmitted_2", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
ev = dev[0].wait_event(["SME: Trying to authenticate"], timeout=10)
if ev is None:
raise Exception("Connection attempt to nontransmitted BSS not started")
if "02:00:00:00:03:02 (SSID='nontransmitted_2'" not in ev:
raise Exception("Unexpected authentication target")
# hostapd does not yet support Multiple-BSSID, so only verify that STA is
# able to start connection attempt.
dev[0].request("REMOVE_NETWORK all")
dev[0].dump_monitor()
def test_scan_only_one(dev, apdev):
"""Test that scanning with a single active AP only returns that one"""
dev[0].flush_scan_cache()
hostapd.add_ap(apdev[0], {"ssid": "test-scan"})
bssid = apdev[0]['bssid']
check_scan(dev[0], "use_id=1", test_busy=True)
dev[0].scan_for_bss(bssid, freq="2412")
status, stdout = hostapd.cmd_execute(dev[0], ['iw', dev[0].ifname, 'scan', 'dump'])
if status != 0:
raise Exception("iw scan dump failed with code %d" % status)
lines = stdout.split('\n')
entries = len(list(filter(lambda x: x.startswith('BSS '), lines)))
if entries != 1:
raise Exception("expected to find 1 BSS entry, got %d" % entries)
def test_scan_ssid_list(dev, apdev):
"""Scan using SSID List element"""
dev[0].flush_scan_cache()
ssid = "test-ssid-list"
hapd = hostapd.add_ap(apdev[0], {"ssid": ssid,
"ignore_broadcast_ssid": "1"})
bssid = apdev[0]['bssid']
found = False
try:
payload = struct.pack('BB', 0, len(ssid)) + ssid.encode()
ssid_list = struct.pack('BB', 84, len(payload)) + payload
cmd = "VENDOR_ELEM_ADD 14 " + binascii.hexlify(ssid_list).decode()
if "OK" not in dev[0].request(cmd):
raise Exception("VENDOR_ELEM_ADD failed")
for i in range(10):
check_scan(dev[0], "freq=2412 use_id=1")
if ssid in dev[0].request("SCAN_RESULTS"):
found = True
break
finally:
dev[0].request("VENDOR_ELEM_REMOVE 14 *")
if not found:
raise Exception("AP not found in scan results")
def test_scan_short_ssid_list(dev, apdev):
"""Scan using Short SSID List element"""
dev[0].flush_scan_cache()
ssid = "test-short-ssid-list"
hapd = hostapd.add_ap(apdev[0], {"ssid": ssid,
"ignore_broadcast_ssid": "1"})
bssid = apdev[0]['bssid']
found = False
try:
payload = struct.pack('<L', binascii.crc32(ssid.encode()))
ssid_list = struct.pack('BBB', 255, 1 + len(payload), 58) + payload
cmd = "VENDOR_ELEM_ADD 14 " + binascii.hexlify(ssid_list).decode()
if "OK" not in dev[0].request(cmd):
raise Exception("VENDOR_ELEM_ADD failed")
for i in range(10):
check_scan(dev[0], "freq=2412 use_id=1")
if ssid in dev[0].request("SCAN_RESULTS"):
found = True
break
finally:
dev[0].request("VENDOR_ELEM_REMOVE 14 *")
if not found:
raise Exception("AP not found in scan results")
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