tests/hwsim/test_cfg80211.py

   1 # cfg80211 test cases
   2 # Copyright (c) 2014, Jouni Malinen <j@w1.fi>
   3 #
   4 # This software may be distributed under the terms of the BSD license.
   5 # See README for more details.
   6
   7 from remotehost import remote_compatible
   8 import logging
   9 logger = logging.getLogger()
  10 import binascii
  11 import os
  12 import time
  13
  14 import hostapd
  15 import hwsim_utils
  16 from tshark import run_tshark
  17 from nl80211 import *
  18
  19 def nl80211_command(dev, cmd, attr):
  20     res = dev.request("VENDOR ffffffff {} {}".format(nl80211_cmd[cmd],
  21                                                      binascii.hexlify(attr)))
  22     if "FAIL" in res:
  23         raise Exception("nl80211 command failed")
  24     return binascii.unhexlify(res)
  25
  26 @remote_compatible
  27 def test_cfg80211_disassociate(dev, apdev):
  28     """cfg80211 disassociation command"""
  29     hapd = hostapd.add_ap(apdev[0], { "ssid": "open" })
  30     dev[0].connect("open", key_mgmt="NONE", scan_freq="2412")
  31     ev = hapd.wait_event([ "AP-STA-CONNECTED" ], timeout=5)
  32     if ev is None:
  33         raise Exception("No connection event received from hostapd")
  34
  35     ifindex = int(dev[0].get_driver_status_field("ifindex"))
  36     attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
  37     attrs += build_nl80211_attr_u16('REASON_CODE', 1)
  38     attrs += build_nl80211_attr_mac('MAC', apdev[0]['bssid'])
  39     nl80211_command(dev[0], 'DISASSOCIATE', attrs)
  40
  41     ev = hapd.wait_event([ "AP-STA-DISCONNECTED" ], timeout=5)
  42     if ev is None:
  43         raise Exception("No disconnection event received from hostapd")
  44
  45 def nl80211_frame(dev, ifindex, frame, freq=None, duration=None, offchannel_tx_ok=False):
  46     attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
  47     if freq is not None:
  48         attrs += build_nl80211_attr_u32('WIPHY_FREQ', freq)
  49     if duration is not None:
  50         attrs += build_nl80211_attr_u32('DURATION', duration)
  51     if offchannel_tx_ok:
  52         attrs += build_nl80211_attr_flag('OFFCHANNEL_TX_OK')
  53     attrs += build_nl80211_attr('FRAME', frame)
  54     return parse_nl80211_attrs(nl80211_command(dev, 'FRAME', attrs))
  55
  56 def nl80211_frame_wait_cancel(dev, ifindex, cookie):
  57     attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
  58     attrs += build_nl80211_attr('COOKIE', cookie)
  59     return nl80211_command(dev, 'FRAME_WAIT_CANCEL', attrs)
  60
  61 def nl80211_remain_on_channel(dev, ifindex, freq, duration):
  62     attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
  63     attrs += build_nl80211_attr_u32('WIPHY_FREQ', freq)
  64     attrs += build_nl80211_attr_u32('DURATION', duration)
  65     return nl80211_command(dev, 'REMAIN_ON_CHANNEL', attrs)
  66
  67 def test_cfg80211_tx_frame(dev, apdev, params):
  68     """cfg80211 offchannel TX frame command"""
  69     ifindex = int(dev[0].get_driver_status_field("ifindex"))
  70
  71     frame = binascii.unhexlify("d000000002000000010002000000000002000000010000000409506f9a090001dd5e506f9a0902020025080401001f0502006414060500585804510b0906000200000000000b1000585804510b0102030405060708090a0b0d1d000200000000000108000000000000000000101100084465766963652041110500585804510bdd190050f204104a0001101012000200011049000600372a000120")
  72
  73     dev[0].request("P2P_GROUP_ADD freq=2412")
  74     res = nl80211_frame(dev[0], ifindex, frame, freq=2422, duration=500,
  75                         offchannel_tx_ok=True)
  76     time.sleep(0.1)
  77
  78     # note: Uncommenting this seems to remove the incorrect channel issue
  79     #nl80211_frame_wait_cancel(dev[0], ifindex, res[nl80211_attr['COOKIE']])
  80
  81     # note: this Action frame ends up getting sent incorrectly on 2422 MHz
  82     nl80211_frame(dev[0], ifindex, frame, freq=2412)
  83     time.sleep(1.5)
  84     # note: also the Deauthenticate frame sent by the GO going down ends up
  85     # being transmitted incorrectly on 2422 MHz.
  86
  87     out = run_tshark(os.path.join(params['logdir'], "hwsim0.pcapng"),
  88                      "wlan.fc.type_subtype == 13", ["radiotap.channel.freq"])
  89     if out is not None:
  90         freq = out.splitlines()
  91         if len(freq) != 2:
  92             raise Exception("Unexpected number of Action frames (%d)" % len(freq))
  93         if freq[0] != "2422":
  94             raise Exception("First Action frame on unexpected channel: %s MHz" % freq[0])
  95         if freq[1] != "2412":
  96             raise Exception("Second Action frame on unexpected channel: %s MHz" % freq[1])
  97
  98 @remote_compatible
  99 def test_cfg80211_wep_key_idx_change(dev, apdev):
 100     """WEP Shared Key authentication and key index change without deauth"""
 101     hapd = hostapd.add_ap(apdev[0],
 102                           { "ssid": "wep-shared-key",
 103                             "wep_key0": '"hello12345678"',
 104                             "wep_key1": '"other12345678"',
 105                             "auth_algs": "2" })
 106     id = dev[0].connect("wep-shared-key", key_mgmt="NONE", auth_alg="SHARED",
 107                         wep_key0='"hello12345678"',
 108                         wep_key1='"other12345678"',
 109                         wep_tx_keyidx="0",
 110                         scan_freq="2412")
 111     hwsim_utils.test_connectivity(dev[0], hapd)
 112
 113     dev[0].set_network(id, "wep_tx_keyidx", "1")
 114
 115     # clear cfg80211 auth state to allow new auth without deauth frame
 116     ifindex = int(dev[0].get_driver_status_field("ifindex"))
 117     attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
 118     attrs += build_nl80211_attr_u16('REASON_CODE', 1)
 119     attrs += build_nl80211_attr_mac('MAC', apdev[0]['bssid'])
 120     attrs += build_nl80211_attr_flag('LOCAL_STATE_CHANGE')
 121     nl80211_command(dev[0], 'DEAUTHENTICATE', attrs)
 122     dev[0].wait_disconnected(timeout=5, error="Local-deauth timed out")
 123
 124     # the previous command results in deauth event followed by auto-reconnect
 125     dev[0].wait_connected(timeout=10, error="Reassociation timed out")
 126     hwsim_utils.test_connectivity(dev[0], hapd)
 127
 128 @remote_compatible
 129 def test_cfg80211_hostapd_ext_sta_remove(dev, apdev):
 130     """cfg80211 DEL_STATION issued externally to hostapd"""
 131     hapd = hostapd.add_ap(apdev[0],
 132                           { "ssid": "open" })
 133     id = dev[0].connect("open", key_mgmt="NONE", scan_freq="2412")
 134
 135     ifindex = int(hapd.get_driver_status_field("ifindex"))
 136     attrs = build_nl80211_attr_u32('IFINDEX', ifindex)
 137     attrs += build_nl80211_attr_u16('REASON_CODE', 1)
 138     attrs += build_nl80211_attr_u8('MGMT_SUBTYPE', 12)
 139     attrs += build_nl80211_attr_mac('MAC', dev[0].own_addr())
 140     nl80211_command(hapd, 'DEL_STATION', attrs)
 141
 142     # Currently, hostapd ignores the NL80211_CMD_DEL_STATION event if
 143     # drv->device_ap_sme == 0 (which is the case with mac80211_hwsim), so no
 144     # further action happens here. If that event were to be used to remove the
 145     # STA entry from hostapd even in device_ap_sme == 0 case, this test case
 146     # could be extended to cover additional operations.