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hostapd/tests/hwsim/test_ap_dynamic.py
Jouni Malinen 5230bf64e8 tests: hostapd behavior on dynamic addition of invalid config 
Verify that hostapd handles ENABLE command on invalid configuration
correctly and allows the configuration to be fixed or the interface to
be removed.

Signed-hostap: Jouni Malinen <j@w1.fi>
2013-11-03 11:31:48 +02:00

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#!/usr/bin/python
#
# Test cases for dynamic BSS changes with hostapd
# Copyright (c) 2013, Qualcomm Atheros, Inc.
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import time
import subprocess
import logging
logger = logging.getLogger()
import hwsim_utils
import hostapd
def test_ap_change_ssid(dev, apdev):
"""Dynamic SSID change with hostapd and WPA2-PSK"""
params = hostapd.wpa2_params(ssid="test-wpa2-psk-start",
passphrase="12345678")
hostapd.add_ap(apdev[0]['ifname'], params)
id = dev[0].connect("test-wpa2-psk-start", psk="12345678",
scan_freq="2412")
dev[0].request("DISCONNECT")
logger.info("Change SSID dynamically")
hapd = hostapd.Hostapd(apdev[0]['ifname'])
res = hapd.request("SET ssid test-wpa2-psk-new")
if "OK" not in res:
raise Exception("SET command failed")
res = hapd.request("RELOAD")
if "OK" not in res:
raise Exception("RELOAD command failed")
dev[0].set_network_quoted(id, "ssid", "test-wpa2-psk-new")
dev[0].connect_network(id)
def multi_check(dev, check):
id = []
for i in range(0, 3):
dev[i].request("BSS_FLUSH 0")
dev[i].dump_monitor()
id.append(dev[i].connect("bss-" + str(i + 1), key_mgmt="NONE",
scan_freq="2412", wait_connect=check[i]))
for i in range(0, 3):
if not check[i]:
ev = dev[i].wait_event(["CTRL-EVENT-CONNECTED"], timeout=0.2)
if ev:
raise Exception("Unexpected connection")
for i in range(0, 3):
dev[i].remove_network(id[i])
time.sleep(0.3)
res = ''
for i in range(0, 3):
res = res + dev[i].request("BSS RANGE=ALL MASK=0x2")
for i in range(0, 3):
if not check[i]:
bssid = '02:00:00:00:03:0' + str(i)
if bssid in res:
raise Exception("Unexpected BSS" + str(i) + " in scan results")
def test_ap_bss_add_remove(dev, apdev):
"""Dynamic BSS add/remove operations with hostapd"""
for d in dev:
d.request("SET ignore_old_scan_res 1")
ifname1 = apdev[0]['ifname']
ifname2 = apdev[0]['ifname'] + '-2'
ifname3 = apdev[0]['ifname'] + '-3'
logger.info("Set up three BSSes one by one")
hostapd.add_bss('phy3', ifname1, 'bss-1.conf')
multi_check(dev, [ True, False, False ])
hostapd.add_bss('phy3', ifname2, 'bss-2.conf')
multi_check(dev, [ True, True, False ])
hostapd.add_bss('phy3', ifname3, 'bss-3.conf')
multi_check(dev, [ True, True, True ])
logger.info("Remove the last BSS and re-add it")
hostapd.remove_bss(ifname3)
multi_check(dev, [ True, True, False ])
hostapd.add_bss('phy3', ifname3, 'bss-3.conf')
multi_check(dev, [ True, True, True ])
logger.info("Remove the middle BSS and re-add it")
hostapd.remove_bss(ifname2)
multi_check(dev, [ True, False, True ])
hostapd.add_bss('phy3', ifname2, 'bss-2.conf')
multi_check(dev, [ True, True, True ])
logger.info("Remove the first BSS and re-add it")
hostapd.remove_bss(ifname1)
multi_check(dev, [ False, True, True ])
hostapd.add_bss('phy3', ifname1, 'bss-1.conf')
multi_check(dev, [ True, True, True ])
logger.info("Remove two BSSes and re-add them")
hostapd.remove_bss(ifname2)
multi_check(dev, [ True, False, True ])
hostapd.remove_bss(ifname3)
multi_check(dev, [ True, False, False ])
dev[0].request("NOTE failure-done")
hostapd.add_bss('phy3', ifname2, 'bss-2.conf')
multi_check(dev, [ True, True, False ])
hostapd.add_bss('phy3', ifname3, 'bss-3.conf')
multi_check(dev, [ True, True, True ])
logger.info("Remove three BSSes and re-add them")
hostapd.remove_bss(ifname1)
multi_check(dev, [ False, True, True ])
hostapd.remove_bss(ifname2)
multi_check(dev, [ False, False, True ])
hostapd.remove_bss(ifname3)
multi_check(dev, [ False, False, False ])
hostapd.add_bss('phy3', ifname1, 'bss-1.conf')
multi_check(dev, [ True, False, False ])
hostapd.add_bss('phy3', ifname2, 'bss-2.conf')
multi_check(dev, [ True, True, False ])
hostapd.add_bss('phy3', ifname3, 'bss-3.conf')
multi_check(dev, [ True, True, True ])
logger.info("Remove three BSSes in reverse order and re-add them")
hostapd.remove_bss(ifname3)
multi_check(dev, [ True, True, False ])
hostapd.remove_bss(ifname2)
multi_check(dev, [ True, False, False ])
hostapd.remove_bss(ifname1)
hostapd.add_bss('phy3', ifname1, 'bss-1.conf')
multi_check(dev, [ True, False, False ])
hostapd.add_bss('phy3', ifname2, 'bss-2.conf')
multi_check(dev, [ True, True, False ])
hostapd.add_bss('phy3', ifname3, 'bss-3.conf')
multi_check(dev, [ True, True, True ])
logger.info("Test error handling if a duplicate ifname is tried")
hostapd.add_bss('phy3', ifname3, 'bss-3.conf', ignore_error=True)
multi_check(dev, [ True, True, True ])
def invalid_ap(hapd_global, ifname):
logger.info("Trying to start AP " + ifname + " with invalid configuration")
hapd_global.remove(ifname)
hapd_global.add(ifname)
hapd = hostapd.Hostapd(ifname)
if not hapd.ping():
raise Exception("Could not ping hostapd")
hapd.set_defaults()
hapd.set("ssid", "invalid-config")
hapd.set("channel", "12345")
try:
hapd.enable()
started = True
except Exception, e:
started = False
if started:
raise Exception("ENABLE command succeeded unexpectedly")
return hapd
def test_ap_invalid_config(dev, apdev):
"""Try to start AP with invalid configuration and fix configuration"""
hapd_global = hostapd.HostapdGlobal()
ifname = apdev[0]['ifname']
hapd = invalid_ap(hapd_global, ifname)
logger.info("Fix configuration and start AP again")
hapd.set("channel", "1")
hapd.enable()
dev[0].connect("invalid-config", key_mgmt="NONE", scan_freq="2412")
def test_ap_invalid_config2(dev, apdev):
"""Try to start AP with invalid configuration and remove interface"""
hapd_global = hostapd.HostapdGlobal()
ifname = apdev[0]['ifname']
hapd = invalid_ap(hapd_global, ifname)
logger.info("Remove interface with failed configuration")
hapd_global.remove(ifname)
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