tests/hwsim/test_wext.py

   1 # Deprecated WEXT driver interface in wpa_supplicant
   2 # Copyright (c) 2013-2015, 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 import logging
   8 logger = logging.getLogger()
   9 import os
  10
  11 import hostapd
  12 import hwsim_utils
  13 from wpasupplicant import WpaSupplicant
  14 from utils import HwsimSkip, skip_with_fips
  15 from test_rfkill import get_rfkill
  16
  17 def get_wext_interface():
  18     if not os.path.exists("/proc/net/wireless"):
  19         raise HwsimSkip("WEXT support not included in the kernel")
  20
  21     wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
  22     try:
  23         wpas.interface_add("wlan5", driver="wext")
  24     except Exception, e:
  25         wpas.close_ctrl()
  26         raise HwsimSkip("WEXT driver support not included in wpa_supplicant")
  27     return wpas
  28
  29 def test_wext_open(dev, apdev):
  30     """WEXT driver interface with open network"""
  31     wpas = get_wext_interface()
  32
  33     params = { "ssid": "wext-open" }
  34     hapd = hostapd.add_ap(apdev[0], params)
  35
  36     wpas.connect("wext-open", key_mgmt="NONE")
  37     hwsim_utils.test_connectivity(wpas, hapd)
  38
  39 def test_wext_wpa2_psk(dev, apdev):
  40     """WEXT driver interface with WPA2-PSK"""
  41     wpas = get_wext_interface()
  42
  43     params = hostapd.wpa2_params(ssid="wext-wpa2-psk", passphrase="12345678")
  44     hapd = hostapd.add_ap(apdev[0], params)
  45
  46     wpas.connect("wext-wpa2-psk", psk="12345678")
  47     hwsim_utils.test_connectivity(wpas, hapd)
  48     if "RSSI=" not in wpas.request("SIGNAL_POLL"):
  49         raise Exception("Missing RSSI from SIGNAL_POLL")
  50
  51     wpas.dump_monitor()
  52     hapd.request("DEAUTHENTICATE " + wpas.p2p_interface_addr())
  53     wpas.wait_disconnected(timeout=15)
  54
  55 def test_wext_wpa_psk(dev, apdev):
  56     """WEXT driver interface with WPA-PSK"""
  57     skip_with_fips(dev[0])
  58     wpas = get_wext_interface()
  59
  60     params = hostapd.wpa_params(ssid="wext-wpa-psk", passphrase="12345678")
  61     hapd = hostapd.add_ap(apdev[0], params)
  62     testfile = "/sys/kernel/debug/ieee80211/%s/netdev:%s/tkip_mic_test" % (hapd.get_driver_status_field("phyname"), apdev[0]['ifname'])
  63     if not os.path.exists(testfile):
  64         wpas.close_ctrl()
  65         raise HwsimSkip("tkip_mic_test not supported in mac80211")
  66
  67     wpas.connect("wext-wpa-psk", psk="12345678")
  68     hwsim_utils.test_connectivity(wpas, hapd)
  69
  70     with open(testfile, "w") as f:
  71         f.write(wpas.p2p_interface_addr())
  72     ev = wpas.wait_event(["CTRL-EVENT-DISCONNECTED"], timeout=1)
  73     if ev is not None:
  74         raise Exception("Unexpected disconnection on first Michael MIC failure")
  75
  76     with open(testfile, "w") as f:
  77         f.write("ff:ff:ff:ff:ff:ff")
  78     ev = wpas.wait_disconnected(timeout=10,
  79                                 error="No disconnection after two Michael MIC failures")
  80     if "reason=14 locally_generated=1" not in ev:
  81         raise Exception("Unexpected disconnection reason: " + ev)
  82
  83 def test_wext_pmksa_cache(dev, apdev):
  84     """PMKSA caching with WEXT"""
  85     wpas = get_wext_interface()
  86
  87     params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache")
  88     hostapd.add_ap(apdev[0], params)
  89     bssid = apdev[0]['bssid']
  90     wpas.connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP",
  91                    eap="GPSK", identity="gpsk user",
  92                    password="abcdefghijklmnop0123456789abcdef",
  93                    scan_freq="2412")
  94     pmksa = wpas.get_pmksa(bssid)
  95     if pmksa is None:
  96         raise Exception("No PMKSA cache entry created")
  97     if pmksa['opportunistic'] != '0':
  98         raise Exception("Unexpected opportunistic PMKSA cache entry")
  99
 100     hostapd.add_ap(apdev[1], params)
 101     bssid2 = apdev[1]['bssid']
 102
 103     wpas.dump_monitor()
 104     logger.info("Roam to AP2")
 105     # It can take some time for the second AP to become ready to reply to Probe
 106     # Request frames especially under heavy CPU load, so allow couple of rounds
 107     # of scanning to avoid reporting errors incorrectly just because of scans
 108     # not having seen the target AP.
 109     for i in range(3):
 110         wpas.scan()
 111         if wpas.get_bss(bssid2) is not None:
 112             break
 113         logger.info("Scan again to find target AP")
 114     wpas.request("ROAM " + bssid2)
 115     ev = wpas.wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=10)
 116     if ev is None:
 117         raise Exception("EAP success timed out")
 118     wpas.wait_connected(timeout=10, error="Roaming timed out")
 119     pmksa2 = wpas.get_pmksa(bssid2)
 120     if pmksa2 is None:
 121         raise Exception("No PMKSA cache entry found")
 122     if pmksa2['opportunistic'] != '0':
 123         raise Exception("Unexpected opportunistic PMKSA cache entry")
 124
 125     wpas.dump_monitor()
 126     logger.info("Roam back to AP1")
 127     wpas.scan()
 128     wpas.request("ROAM " + bssid)
 129     ev = wpas.wait_event(["CTRL-EVENT-EAP-STARTED",
 130                           "CTRL-EVENT-CONNECTED"], timeout=15)
 131     if ev is None:
 132         raise Exception("Roaming with the AP timed out")
 133     if "CTRL-EVENT-EAP-STARTED" in ev:
 134         raise Exception("Unexpected EAP exchange")
 135     pmksa1b = wpas.get_pmksa(bssid)
 136     if pmksa1b is None:
 137         raise Exception("No PMKSA cache entry found")
 138     if pmksa['pmkid'] != pmksa1b['pmkid']:
 139         raise Exception("Unexpected PMKID change for AP1")
 140
 141     wpas.dump_monitor()
 142     if "FAIL" in wpas.request("PMKSA_FLUSH"):
 143         raise Exception("PMKSA_FLUSH failed")
 144     if wpas.get_pmksa(bssid) is not None or wpas.get_pmksa(bssid2) is not None:
 145         raise Exception("PMKSA_FLUSH did not remove PMKSA entries")
 146     wpas.wait_disconnected(timeout=5)
 147     wpas.wait_connected(timeout=15, error="Reconnection timed out")
 148
 149 def test_wext_wep_open_auth(dev, apdev):
 150     """WEP Open System authentication"""
 151     wpas = get_wext_interface()
 152
 153     hapd = hostapd.add_ap(apdev[0],
 154                           { "ssid": "wep-open",
 155                             "wep_key0": '"hello"' })
 156     wpas.connect("wep-open", key_mgmt="NONE", wep_key0='"hello"',
 157                  scan_freq="2412")
 158     hwsim_utils.test_connectivity(wpas, hapd)
 159     if "[WEP]" not in wpas.request("SCAN_RESULTS"):
 160         raise Exception("WEP flag not indicated in scan results")
 161
 162 def test_wext_wep_shared_key_auth(dev, apdev):
 163     """WEP Shared Key authentication"""
 164     wpas = get_wext_interface()
 165
 166     hapd = hostapd.add_ap(apdev[0],
 167                           { "ssid": "wep-shared-key",
 168                             "wep_key0": '"hello12345678"',
 169                             "auth_algs": "2" })
 170     wpas.connect("wep-shared-key", key_mgmt="NONE", auth_alg="SHARED",
 171                  wep_key0='"hello12345678"', scan_freq="2412")
 172     hwsim_utils.test_connectivity(wpas, hapd)
 173     wpas.request("REMOVE_NETWORK all")
 174     wpas.wait_disconnected(timeout=5)
 175     wpas.connect("wep-shared-key", key_mgmt="NONE", auth_alg="OPEN SHARED",
 176                  wep_key0='"hello12345678"', scan_freq="2412")
 177
 178 def test_wext_pmf(dev, apdev):
 179     """WEXT driver interface with WPA2-PSK and PMF"""
 180     wpas = get_wext_interface()
 181
 182     params = hostapd.wpa2_params(ssid="wext-wpa2-psk", passphrase="12345678")
 183     params["wpa_key_mgmt"] = "WPA-PSK-SHA256"
 184     params["ieee80211w"] = "2"
 185     hapd = hostapd.add_ap(apdev[0], params)
 186
 187     wpas.connect("wext-wpa2-psk", psk="12345678", ieee80211w="1",
 188                  key_mgmt="WPA-PSK WPA-PSK-SHA256", proto="WPA2",
 189                  scan_freq="2412")
 190     hwsim_utils.test_connectivity(wpas, hapd)
 191
 192     addr = wpas.p2p_interface_addr()
 193     hapd.request("DEAUTHENTICATE " + addr)
 194     wpas.wait_disconnected(timeout=5)
 195
 196 def test_wext_scan_hidden(dev, apdev):
 197     """WEXT with hidden SSID"""
 198     wpas = get_wext_interface()
 199
 200     hapd = hostapd.add_ap(apdev[0], { "ssid": "test-scan",
 201                                       "ignore_broadcast_ssid": "1" })
 202     hapd2 = hostapd.add_ap(apdev[1], { "ssid": "test-scan2",
 203                                        "ignore_broadcast_ssid": "1" })
 204
 205     id1 = wpas.connect("test-scan", key_mgmt="NONE", scan_ssid="1",
 206                        only_add_network=True)
 207
 208     wpas.request("SCAN scan_id=%d" % id1)
 209
 210     ev = wpas.wait_event(["CTRL-EVENT-SCAN-RESULTS"], timeout=15)
 211     if ev is None:
 212         raise Exception("Scan did not complete")
 213
 214     if "test-scan" not in wpas.request("SCAN_RESULTS"):
 215         raise Exception("Did not find hidden SSID in scan")
 216
 217     id = wpas.connect("test-scan2", key_mgmt="NONE", scan_ssid="1",
 218                       only_add_network=True)
 219     wpas.connect_network(id, timeout=30)
 220     wpas.request("DISCONNECT")
 221     hapd2.disable()
 222     hapd.disable()
 223     wpas.interface_remove("wlan5")
 224     wpas.interface_add("wlan5")
 225     wpas.flush_scan_cache(freq=2412)
 226     wpas.flush_scan_cache()
 227
 228 def test_wext_rfkill(dev, apdev):
 229     """WEXT and rfkill block/unblock"""
 230     wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
 231     wpas.interface_add("wlan5")
 232     rfk = get_rfkill(wpas)
 233     wpas.interface_remove("wlan5")
 234
 235     wpas = get_wext_interface()
 236
 237     hapd = hostapd.add_ap(apdev[0], { "ssid": "open" })
 238     wpas.connect("open", key_mgmt="NONE", scan_freq="2412")
 239     try:
 240         logger.info("rfkill block")
 241         rfk.block()
 242         wpas.wait_disconnected(timeout=10,
 243                                error="Missing disconnection event on rfkill block")
 244
 245         logger.info("rfkill unblock")
 246         rfk.unblock()
 247         wpas.wait_connected(timeout=20,
 248                             error="Missing connection event on rfkill unblock")
 249         hwsim_utils.test_connectivity(wpas, hapd)
 250     finally:
 251         rfk.unblock()