#!/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) 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("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 test_ap_multi_bss_config(dev, apdev): """hostapd start with a multi-BSS configuration file""" 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 with one configuration file") hostapd.add_iface(ifname1, 'multi-bss.conf') hapd = hostapd.Hostapd(ifname1) hapd.enable() multi_check(dev, [ True, True, True ]) 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 ]) 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)