# cfg80211 test cases # Copyright (c) 2014, Jouni Malinen # # This software may be distributed under the terms of the BSD license. # See README for more details. from remotehost import remote_compatible import logging logger = logging.getLogger() import binascii import os import time import hostapd import hwsim_utils from tshark import run_tshark from nl80211 import * from wpasupplicant import WpaSupplicant def nl80211_command(dev, cmd, attr): res = dev.request("VENDOR ffffffff {} {}".format(nl80211_cmd[cmd], binascii.hexlify(attr).decode())) if "FAIL" in res: raise Exception("nl80211 command failed") return binascii.unhexlify(res) @remote_compatible def test_cfg80211_disassociate(dev, apdev): """cfg80211 disassociation command""" hapd = hostapd.add_ap(apdev[0], {"ssid": "open"}) dev[0].connect("open", key_mgmt="NONE", scan_freq="2412") ev = hapd.wait_event(["AP-STA-CONNECTED"], timeout=5) if ev is None: raise Exception("No connection event received from hostapd") ifindex = int(dev[0].get_driver_status_field("ifindex")) attrs = build_nl80211_attr_u32('IFINDEX', ifindex) attrs += build_nl80211_attr_u16('REASON_CODE', 1) attrs += build_nl80211_attr_mac('MAC', apdev[0]['bssid']) nl80211_command(dev[0], 'DISASSOCIATE', attrs) ev = hapd.wait_event(["AP-STA-DISCONNECTED"], timeout=5) if ev is None: raise Exception("No disconnection event received from hostapd") def nl80211_frame(dev, ifindex, frame, freq=None, duration=None, offchannel_tx_ok=False): attrs = build_nl80211_attr_u32('IFINDEX', ifindex) if freq is not None: attrs += build_nl80211_attr_u32('WIPHY_FREQ', freq) if duration is not None: attrs += build_nl80211_attr_u32('DURATION', duration) if offchannel_tx_ok: attrs += build_nl80211_attr_flag('OFFCHANNEL_TX_OK') attrs += build_nl80211_attr('FRAME', frame) return parse_nl80211_attrs(nl80211_command(dev, 'FRAME', attrs)) def nl80211_frame_wait_cancel(dev, ifindex, cookie): attrs = build_nl80211_attr_u32('IFINDEX', ifindex) attrs += build_nl80211_attr('COOKIE', cookie) return nl80211_command(dev, 'FRAME_WAIT_CANCEL', attrs) def nl80211_remain_on_channel(dev, ifindex, freq, duration): attrs = build_nl80211_attr_u32('IFINDEX', ifindex) attrs += build_nl80211_attr_u32('WIPHY_FREQ', freq) attrs += build_nl80211_attr_u32('DURATION', duration) return nl80211_command(dev, 'REMAIN_ON_CHANNEL', attrs) def test_cfg80211_tx_frame(dev, apdev, params): """cfg80211 offchannel TX frame command""" dev[0].p2p_start_go(freq='2412') go = WpaSupplicant(dev[0].group_ifname) frame = binascii.unhexlify("d0000000020000000100" + go.own_addr().replace(':', '') + "02000000010000000409506f9a090001dd5e506f9a0902020025080401001f0502006414060500585804510b0906000200000000000b1000585804510b0102030405060708090a0b0d1d000200000000000108000000000000000000101100084465766963652041110500585804510bdd190050f204104a0001101012000200011049000600372a000120") ifindex = int(go.get_driver_status_field("ifindex")) res = nl80211_frame(go, ifindex, frame, freq=2422, duration=500, offchannel_tx_ok=True) time.sleep(0.1) # note: Uncommenting this seems to remove the incorrect channel issue #nl80211_frame_wait_cancel(dev[0], ifindex, res[nl80211_attr['COOKIE']]) # note: this Action frame ends up getting sent incorrectly on 2422 MHz nl80211_frame(go, ifindex, frame, freq=2412) time.sleep(1.5) # note: also the Deauthenticate frame sent by the GO going down ends up # being transmitted incorrectly on 2422 MHz. del go out = run_tshark(os.path.join(params['logdir'], "hwsim0.pcapng"), "wlan.fc.type_subtype == 13", ["radiotap.channel.freq"]) if out is not None: freq = out.splitlines() if len(freq) != 2: raise Exception("Unexpected number of Action frames (%d)" % len(freq)) if freq[0] != "2422": raise Exception("First Action frame on unexpected channel: %s MHz" % freq[0]) if freq[1] != "2412": raise Exception("Second Action frame on unexpected channel: %s MHz" % freq[1]) @remote_compatible def test_cfg80211_wep_key_idx_change(dev, apdev): """WEP Shared Key authentication and key index change without deauth""" hapd = hostapd.add_ap(apdev[0], {"ssid": "wep-shared-key", "wep_key0": '"hello12345678"', "wep_key1": '"other12345678"', "auth_algs": "2"}) id = dev[0].connect("wep-shared-key", key_mgmt="NONE", auth_alg="SHARED", wep_key0='"hello12345678"', wep_key1='"other12345678"', wep_tx_keyidx="0", scan_freq="2412") hwsim_utils.test_connectivity(dev[0], hapd) dev[0].set_network(id, "wep_tx_keyidx", "1") # clear cfg80211 auth state to allow new auth without deauth frame ifindex = int(dev[0].get_driver_status_field("ifindex")) attrs = build_nl80211_attr_u32('IFINDEX', ifindex) attrs += build_nl80211_attr_u16('REASON_CODE', 1) attrs += build_nl80211_attr_mac('MAC', apdev[0]['bssid']) attrs += build_nl80211_attr_flag('LOCAL_STATE_CHANGE') nl80211_command(dev[0], 'DEAUTHENTICATE', attrs) dev[0].wait_disconnected(timeout=5, error="Local-deauth timed out") # the previous command results in deauth event followed by auto-reconnect dev[0].wait_connected(timeout=10, error="Reassociation timed out") hwsim_utils.test_connectivity(dev[0], hapd) @remote_compatible def test_cfg80211_hostapd_ext_sta_remove(dev, apdev): """cfg80211 DEL_STATION issued externally to hostapd""" hapd = hostapd.add_ap(apdev[0], {"ssid": "open"}) id = dev[0].connect("open", key_mgmt="NONE", scan_freq="2412") ifindex = int(hapd.get_driver_status_field("ifindex")) attrs = build_nl80211_attr_u32('IFINDEX', ifindex) attrs += build_nl80211_attr_u16('REASON_CODE', 1) attrs += build_nl80211_attr_u8('MGMT_SUBTYPE', 12) attrs += build_nl80211_attr_mac('MAC', dev[0].own_addr()) nl80211_command(hapd, 'DEL_STATION', attrs) # Currently, hostapd ignores the NL80211_CMD_DEL_STATION event if # drv->device_ap_sme == 0 (which is the case with mac80211_hwsim), so no # further action happens here. If that event were to be used to remove the # STA entry from hostapd even in device_ap_sme == 0 case, this test case # could be extended to cover additional operations.