hostapd/tests/hwsim/wpasupplicant.py
Jouni Malinen d4b21766e5 tests: Force p2p_find in p2p_service_discovery_fragmentation
It was possible for this test case to fail if P2P_FLUSH was issued
during a search scan and that scan adding back the peer. Avoid this by
forcing p2p_find to be started regardless of the current P2P peer table
contents for each round of service discovery.

Signed-hostap: Jouni Malinen <j@w1.fi>
2014-01-07 10:45:11 +02:00

729 lines
25 KiB
Python

#!/usr/bin/python
#
# Python class for controlling wpa_supplicant
# Copyright (c) 2013-2014, Jouni Malinen <j@w1.fi>
#
# This software may be distributed under the terms of the BSD license.
# See README for more details.
import os
import time
import logging
import re
import subprocess
import wpaspy
logger = logging.getLogger()
wpas_ctrl = '/var/run/wpa_supplicant'
class WpaSupplicant:
def __init__(self, ifname=None, global_iface=None):
self.group_ifname = None
if ifname:
self.set_ifname(ifname)
else:
self.ifname = None
self.global_iface = global_iface
if global_iface:
self.global_ctrl = wpaspy.Ctrl(global_iface)
self.global_mon = wpaspy.Ctrl(global_iface)
self.global_mon.attach()
def set_ifname(self, ifname):
self.ifname = ifname
self.ctrl = wpaspy.Ctrl(os.path.join(wpas_ctrl, ifname))
self.mon = wpaspy.Ctrl(os.path.join(wpas_ctrl, ifname))
self.mon.attach()
def remove_ifname(self):
if self.ifname:
self.mon.detach()
self.mon = None
self.ctrl = None
self.ifname = None
def interface_add(self, ifname, driver="nl80211", drv_params=None):
try:
groups = subprocess.check_output(["id"])
group = "admin" if "(admin)" in groups else "adm"
except Exception, e:
group = "admin"
cmd = "INTERFACE_ADD " + ifname + "\t\t" + driver + "\tDIR=/var/run/wpa_supplicant GROUP=" + group
if drv_params:
cmd = cmd + '\t' + drv_params
if "FAIL" in self.global_request(cmd):
raise Exception("Failed to add a dynamic wpa_supplicant interface")
self.set_ifname(ifname)
def interface_remove(self, ifname):
self.remove_ifname()
self.global_request("INTERFACE_REMOVE " + ifname)
def request(self, cmd):
logger.debug(self.ifname + ": CTRL: " + cmd)
return self.ctrl.request(cmd)
def global_request(self, cmd):
if self.global_iface is None:
self.request(cmd)
else:
ifname = self.ifname or self.global_iface
logger.debug(ifname + ": CTRL: " + cmd)
return self.global_ctrl.request(cmd)
def group_request(self, cmd):
if self.group_ifname and self.group_ifname != self.ifname:
logger.debug(self.group_ifname + ": CTRL: " + cmd)
gctrl = wpaspy.Ctrl(os.path.join(wpas_ctrl, self.group_ifname))
return gctrl.request(cmd)
return self.request(cmd)
def ping(self):
return "PONG" in self.request("PING")
def reset(self):
res = self.request("FLUSH")
if not "OK" in res:
logger.info("FLUSH to " + self.ifname + " failed: " + res)
self.request("SET external_sim 0")
self.request("SET hessid 00:00:00:00:00:00")
self.request("SET access_network_type 15")
self.request("SET p2p_add_cli_chan 0")
self.request("SET p2p_no_go_freq ")
self.request("SET p2p_pref_chan ")
self.request("SET p2p_no_group_iface 1")
self.group_ifname = None
self.dump_monitor()
iter = 0
while iter < 60:
state = self.get_driver_status_field("scan_state")
if "SCAN_STARTED" in state or "SCAN_REQUESTED" in state:
logger.info(self.ifname + ": Waiting for scan operation to complete before continuing")
time.sleep(1)
else:
break
iter = iter + 1
if iter == 60:
logger.error(self.ifname + ": Driver scan state did not clear")
print "Trying to clear cfg80211/mac80211 scan state"
try:
cmd = ["sudo", "ifconfig", self.ifname, "down"]
subprocess.call(cmd)
except subprocess.CalledProcessError, e:
logger.info("ifconfig failed: " + str(e.returncode))
logger.info(e.output)
try:
cmd = ["sudo", "ifconfig", self.ifname, "up"]
subprocess.call(cmd)
except subprocess.CalledProcessError, e:
logger.info("ifconfig failed: " + str(e.returncode))
logger.info(e.output)
if not self.ping():
logger.info("No PING response from " + self.ifname + " after reset")
def add_network(self):
id = self.request("ADD_NETWORK")
if "FAIL" in id:
raise Exception("ADD_NETWORK failed")
return int(id)
def remove_network(self, id):
id = self.request("REMOVE_NETWORK " + str(id))
if "FAIL" in id:
raise Exception("REMOVE_NETWORK failed")
return None
def set_network(self, id, field, value):
res = self.request("SET_NETWORK " + str(id) + " " + field + " " + value)
if "FAIL" in res:
raise Exception("SET_NETWORK failed")
return None
def set_network_quoted(self, id, field, value):
res = self.request("SET_NETWORK " + str(id) + " " + field + ' "' + value + '"')
if "FAIL" in res:
raise Exception("SET_NETWORK failed")
return None
def list_networks(self):
res = self.request("LIST_NETWORKS")
lines = res.splitlines()
networks = []
for l in lines:
if "network id" in l:
continue
[id,ssid,bssid,flags] = l.split('\t')
network = {}
network['id'] = id
network['ssid'] = ssid
network['bssid'] = bssid
network['flags'] = flags
networks.append(network)
return networks
def hs20_enable(self):
self.request("SET interworking 1")
self.request("SET hs20 1")
def add_cred(self):
id = self.request("ADD_CRED")
if "FAIL" in id:
raise Exception("ADD_CRED failed")
return int(id)
def remove_cred(self, id):
id = self.request("REMOVE_CRED " + str(id))
if "FAIL" in id:
raise Exception("REMOVE_CRED failed")
return None
def set_cred(self, id, field, value):
res = self.request("SET_CRED " + str(id) + " " + field + " " + value)
if "FAIL" in res:
raise Exception("SET_CRED failed")
return None
def set_cred_quoted(self, id, field, value):
res = self.request("SET_CRED " + str(id) + " " + field + ' "' + value + '"')
if "FAIL" in res:
raise Exception("SET_CRED failed")
return None
def add_cred_values(self, params):
id = self.add_cred()
quoted = [ "realm", "username", "password", "domain", "imsi",
"excluded_ssid", "milenage", "ca_cert", "client_cert",
"private_key" ]
for field in quoted:
if field in params:
self.set_cred_quoted(id, field, params[field])
not_quoted = [ "eap", "roaming_consortium",
"required_roaming_consortium" ]
for field in not_quoted:
if field in params:
self.set_cred(id, field, params[field])
return id;
def select_network(self, id):
id = self.request("SELECT_NETWORK " + str(id))
if "FAIL" in id:
raise Exception("SELECT_NETWORK failed")
return None
def connect_network(self, id):
self.dump_monitor()
self.select_network(id)
ev = self.wait_event(["CTRL-EVENT-CONNECTED"], timeout=10)
if ev is None:
raise Exception("Association with the AP timed out")
self.dump_monitor()
def get_status(self):
res = self.request("STATUS")
lines = res.splitlines()
vals = dict()
for l in lines:
[name,value] = l.split('=', 1)
vals[name] = value
return vals
def get_status_field(self, field):
vals = self.get_status()
if field in vals:
return vals[field]
return None
def get_group_status(self):
res = self.group_request("STATUS")
lines = res.splitlines()
vals = dict()
for l in lines:
[name,value] = l.split('=', 1)
vals[name] = value
return vals
def get_group_status_field(self, field):
vals = self.get_group_status()
if field in vals:
return vals[field]
return None
def get_driver_status(self):
res = self.request("STATUS-DRIVER")
lines = res.splitlines()
vals = dict()
for l in lines:
[name,value] = l.split('=', 1)
vals[name] = value
return vals
def get_driver_status_field(self, field):
vals = self.get_driver_status()
if field in vals:
return vals[field]
return None
def p2p_dev_addr(self):
return self.get_status_field("p2p_device_address")
def p2p_interface_addr(self):
return self.get_group_status_field("address")
def p2p_listen(self):
return self.global_request("P2P_LISTEN")
def p2p_find(self, social=False):
if social:
return self.global_request("P2P_FIND type=social")
return self.global_request("P2P_FIND")
def p2p_stop_find(self):
return self.global_request("P2P_STOP_FIND")
def wps_read_pin(self):
#TODO: make this random
self.pin = "12345670"
return self.pin
def peer_known(self, peer, full=True):
res = self.global_request("P2P_PEER " + peer)
if peer.lower() not in res.lower():
return False
if not full:
return True
return "[PROBE_REQ_ONLY]" not in res
def discover_peer(self, peer, full=True, timeout=15, social=True, force_find=False):
logger.info(self.ifname + ": Trying to discover peer " + peer)
if not force_find and self.peer_known(peer, full):
return True
self.p2p_find(social)
count = 0
while count < timeout:
time.sleep(1)
count = count + 1
if self.peer_known(peer, full):
return True
return False
def get_peer(self, peer):
res = self.global_request("P2P_PEER " + peer)
if peer.lower() not in res.lower():
raise Exception("Peer information not available")
lines = res.splitlines()
vals = dict()
for l in lines:
if '=' in l:
[name,value] = l.split('=', 1)
vals[name] = value
return vals
def group_form_result(self, ev, expect_failure=False, go_neg_res=None):
if expect_failure:
if "P2P-GROUP-STARTED" in ev:
raise Exception("Group formation succeeded when expecting failure")
exp = r'<.>(P2P-GO-NEG-FAILURE) status=([0-9]*)'
s = re.split(exp, ev)
if len(s) < 3:
return None
res = {}
res['result'] = 'go-neg-failed'
res['status'] = int(s[2])
return res
if "P2P-GROUP-STARTED" not in ev:
raise Exception("No P2P-GROUP-STARTED event seen")
exp = r'<.>(P2P-GROUP-STARTED) ([^ ]*) ([^ ]*) ssid="(.*)" freq=([0-9]*) ((?:psk=.*)|(?:passphrase=".*")) go_dev_addr=([0-9a-f:]*)'
s = re.split(exp, ev)
if len(s) < 8:
raise Exception("Could not parse P2P-GROUP-STARTED")
res = {}
res['result'] = 'success'
res['ifname'] = s[2]
self.group_ifname = s[2]
res['role'] = s[3]
res['ssid'] = s[4]
res['freq'] = s[5]
if "[PERSISTENT]" in ev:
res['persistent'] = True
else:
res['persistent'] = False
p = re.match(r'psk=([0-9a-f]*)', s[6])
if p:
res['psk'] = p.group(1)
p = re.match(r'passphrase="(.*)"', s[6])
if p:
res['passphrase'] = p.group(1)
res['go_dev_addr'] = s[7]
if go_neg_res:
exp = r'<.>(P2P-GO-NEG-SUCCESS) role=(GO|client) freq=([0-9]*)'
s = re.split(exp, go_neg_res)
if len(s) < 4:
raise Exception("Could not parse P2P-GO-NEG-SUCCESS")
res['go_neg_role'] = s[2]
res['go_neg_freq'] = s[3]
return res
def p2p_go_neg_auth(self, peer, pin, method, go_intent=None, persistent=False, freq=None):
if not self.discover_peer(peer):
raise Exception("Peer " + peer + " not found")
self.dump_monitor()
cmd = "P2P_CONNECT " + peer + " " + pin + " " + method + " auth"
if go_intent:
cmd = cmd + ' go_intent=' + str(go_intent)
if freq:
cmd = cmd + ' freq=' + str(freq)
if persistent:
cmd = cmd + " persistent"
if "OK" in self.global_request(cmd):
return None
raise Exception("P2P_CONNECT (auth) failed")
def p2p_go_neg_auth_result(self, timeout=1, expect_failure=False):
go_neg_res = None
ev = self.wait_global_event(["P2P-GO-NEG-SUCCESS",
"P2P-GO-NEG-FAILURE"], timeout);
if ev is None:
if expect_failure:
return None
raise Exception("Group formation timed out")
if "P2P-GO-NEG-SUCCESS" in ev:
go_neg_res = ev
ev = self.wait_global_event(["P2P-GROUP-STARTED"], timeout);
if ev is None:
if expect_failure:
return None
raise Exception("Group formation timed out")
self.dump_monitor()
return self.group_form_result(ev, expect_failure, go_neg_res)
def p2p_go_neg_init(self, peer, pin, method, timeout=0, go_intent=None, expect_failure=False, persistent=False, freq=None):
if not self.discover_peer(peer):
raise Exception("Peer " + peer + " not found")
self.dump_monitor()
if pin:
cmd = "P2P_CONNECT " + peer + " " + pin + " " + method
else:
cmd = "P2P_CONNECT " + peer + " " + method
if go_intent:
cmd = cmd + ' go_intent=' + str(go_intent)
if freq:
cmd = cmd + ' freq=' + str(freq)
if persistent:
cmd = cmd + " persistent"
if "OK" in self.global_request(cmd):
if timeout == 0:
self.dump_monitor()
return None
go_neg_res = None
ev = self.wait_global_event(["P2P-GO-NEG-SUCCESS",
"P2P-GO-NEG-FAILURE"], timeout)
if ev is None:
if expect_failure:
return None
raise Exception("Group formation timed out")
if "P2P-GO-NEG-SUCCESS" in ev:
go_neg_res = ev
ev = self.wait_global_event(["P2P-GROUP-STARTED"], timeout)
if ev is None:
if expect_failure:
return None
raise Exception("Group formation timed out")
self.dump_monitor()
return self.group_form_result(ev, expect_failure, go_neg_res)
raise Exception("P2P_CONNECT failed")
def wait_event(self, events, timeout=10):
start = os.times()[4]
while True:
while self.mon.pending():
ev = self.mon.recv()
logger.debug(self.ifname + ": " + ev)
for event in events:
if event in ev:
return ev
now = os.times()[4]
remaining = start + timeout - now
if remaining <= 0:
break
if not self.mon.pending(timeout=remaining):
break
return None
def wait_global_event(self, events, timeout):
if self.global_iface is None:
self.wait_event(events, timeout)
else:
start = os.times()[4]
while True:
while self.global_mon.pending():
ev = self.global_mon.recv()
logger.debug(self.ifname + "(global): " + ev)
for event in events:
if event in ev:
return ev
now = os.times()[4]
remaining = start + timeout - now
if remaining <= 0:
break
if not self.global_mon.pending(timeout=remaining):
break
return None
def wait_go_ending_session(self):
ev = self.wait_event(["P2P-GROUP-REMOVED"], timeout=3)
if ev is None:
raise Exception("Group removal event timed out")
if "reason=GO_ENDING_SESSION" not in ev:
raise Exception("Unexpected group removal reason")
def dump_monitor(self):
while self.mon.pending():
ev = self.mon.recv()
logger.debug(self.ifname + ": " + ev)
while self.global_mon.pending():
ev = self.global_mon.recv()
logger.debug(self.ifname + "(global): " + ev)
def remove_group(self, ifname=None):
if ifname is None:
ifname = self.group_ifname if self.group_ifname else self.ifname
if "OK" not in self.global_request("P2P_GROUP_REMOVE " + ifname):
raise Exception("Group could not be removed")
self.group_ifname = None
def p2p_start_go(self, persistent=None, freq=None):
self.dump_monitor()
cmd = "P2P_GROUP_ADD"
if persistent is None:
pass
elif persistent is True:
cmd = cmd + " persistent"
else:
cmd = cmd + " persistent=" + str(persistent)
if freq:
cmd = cmd + " freq=" + str(freq)
if "OK" in self.global_request(cmd):
ev = self.wait_global_event(["P2P-GROUP-STARTED"], timeout=5)
if ev is None:
raise Exception("GO start up timed out")
self.dump_monitor()
return self.group_form_result(ev)
raise Exception("P2P_GROUP_ADD failed")
def p2p_go_authorize_client(self, pin):
cmd = "WPS_PIN any " + pin
if "FAIL" in self.group_request(cmd):
raise Exception("Failed to authorize client connection on GO")
return None
def p2p_go_authorize_client_pbc(self):
cmd = "WPS_PBC"
if "FAIL" in self.group_request(cmd):
raise Exception("Failed to authorize client connection on GO")
return None
def p2p_connect_group(self, go_addr, pin, timeout=0, social=False):
self.dump_monitor()
if not self.discover_peer(go_addr, social=social):
raise Exception("GO " + go_addr + " not found")
self.dump_monitor()
cmd = "P2P_CONNECT " + go_addr + " " + pin + " join"
if "OK" in self.global_request(cmd):
if timeout == 0:
self.dump_monitor()
return None
ev = self.wait_global_event(["P2P-GROUP-STARTED"], timeout)
if ev is None:
raise Exception("Joining the group timed out")
self.dump_monitor()
return self.group_form_result(ev)
raise Exception("P2P_CONNECT(join) failed")
def tdls_setup(self, peer):
cmd = "TDLS_SETUP " + peer
if "FAIL" in self.group_request(cmd):
raise Exception("Failed to request TDLS setup")
return None
def tdls_teardown(self, peer):
cmd = "TDLS_TEARDOWN " + peer
if "FAIL" in self.group_request(cmd):
raise Exception("Failed to request TDLS teardown")
return None
def connect(self, ssid=None, ssid2=None, psk=None, proto=None,
key_mgmt=None, wep_key0=None,
ieee80211w=None, pairwise=None, group=None, scan_freq=None,
eap=None, identity=None, anonymous_identity=None,
password=None, phase1=None, phase2=None, ca_cert=None,
domain_suffix_match=None, password_hex=None,
client_cert=None, private_key=None, peerkey=False, okc=False,
eapol_flags=None,
wait_connect=True, only_add_network=False):
logger.info("Connect STA " + self.ifname + " to AP")
id = self.add_network()
if ssid:
self.set_network_quoted(id, "ssid", ssid)
elif ssid2:
self.set_network(id, "ssid", ssid2)
if psk:
self.set_network_quoted(id, "psk", psk)
if proto:
self.set_network(id, "proto", proto)
if key_mgmt:
self.set_network(id, "key_mgmt", key_mgmt)
if ieee80211w:
self.set_network(id, "ieee80211w", ieee80211w)
if pairwise:
self.set_network(id, "pairwise", pairwise)
if group:
self.set_network(id, "group", group)
if wep_key0:
self.set_network(id, "wep_key0", wep_key0)
if scan_freq:
self.set_network(id, "scan_freq", scan_freq)
if eap:
self.set_network(id, "eap", eap)
if identity:
self.set_network_quoted(id, "identity", identity)
if anonymous_identity:
self.set_network_quoted(id, "anonymous_identity",
anonymous_identity)
if password:
self.set_network_quoted(id, "password", password)
if password_hex:
self.set_network(id, "password", password_hex)
if ca_cert:
self.set_network_quoted(id, "ca_cert", ca_cert)
if client_cert:
self.set_network_quoted(id, "client_cert", client_cert)
if private_key:
self.set_network_quoted(id, "private_key", private_key)
if phase1:
self.set_network_quoted(id, "phase1", phase1)
if phase2:
self.set_network_quoted(id, "phase2", phase2)
if domain_suffix_match:
self.set_network_quoted(id, "domain_suffix_match",
domain_suffix_match)
if peerkey:
self.set_network(id, "peerkey", "1")
if okc:
self.set_network(id, "proactive_key_caching", "1")
if eapol_flags:
self.set_network(id, "eapol_flags", eapol_flags)
if only_add_network:
return id
if wait_connect:
self.connect_network(id)
else:
self.dump_monitor()
self.select_network(id)
return id
def scan(self, type=None, freq=None, no_wait=False):
if type:
cmd = "SCAN TYPE=" + type
else:
cmd = "SCAN"
if freq:
cmd = cmd + " freq=" + freq
if not no_wait:
self.dump_monitor()
if not "OK" in self.request(cmd):
raise Exception("Failed to trigger scan")
if no_wait:
return
ev = self.wait_event(["CTRL-EVENT-SCAN-RESULTS"], 15)
if ev is None:
raise Exception("Scan timed out")
def roam(self, bssid):
self.dump_monitor()
self.request("ROAM " + bssid)
ev = self.wait_event(["CTRL-EVENT-CONNECTED"], timeout=10)
if ev is None:
raise Exception("Roaming with the AP timed out")
self.dump_monitor()
def roam_over_ds(self, bssid):
self.dump_monitor()
self.request("FT_DS " + bssid)
ev = self.wait_event(["CTRL-EVENT-CONNECTED"], timeout=10)
if ev is None:
raise Exception("Roaming with the AP timed out")
self.dump_monitor()
def wps_reg(self, bssid, pin, new_ssid=None, key_mgmt=None, cipher=None,
new_passphrase=None, no_wait=False):
self.dump_monitor()
if new_ssid:
self.request("WPS_REG " + bssid + " " + pin + " " +
new_ssid.encode("hex") + " " + key_mgmt + " " +
cipher + " " + new_passphrase.encode("hex"))
if no_wait:
return
ev = self.wait_event(["WPS-SUCCESS"], timeout=15)
else:
self.request("WPS_REG " + bssid + " " + pin)
if no_wait:
return
ev = self.wait_event(["WPS-CRED-RECEIVED"], timeout=15)
if ev is None:
raise Exception("WPS cred timed out")
ev = self.wait_event(["WPS-FAIL"], timeout=15)
if ev is None:
raise Exception("WPS timed out")
ev = self.wait_event(["CTRL-EVENT-CONNECTED"], timeout=15)
if ev is None:
raise Exception("Association with the AP timed out")
def relog(self):
self.request("RELOG")
def wait_completed(self, timeout=10):
for i in range(0, timeout * 2):
if self.get_status_field("wpa_state") == "COMPLETED":
return
time.sleep(0.5)
raise Exception("Timeout while waiting for COMPLETED state")
def get_capability(self, field):
res = self.request("GET_CAPABILITY " + field)
if "FAIL" in res:
return None
return res.split(' ')
def get_bss(self, bssid):
res = self.request("BSS " + bssid)
lines = res.splitlines()
vals = dict()
for l in lines:
[name,value] = l.split('=', 1)
vals[name] = value
return vals
def get_pmksa(self, bssid):
res = self.request("PMKSA")
lines = res.splitlines()
for l in lines:
if bssid not in l:
continue
vals = dict()
[index,aa,pmkid,expiration,opportunistic] = l.split(' ')
vals['index'] = index
vals['pmkid'] = pmkid
vals['expiration'] = expiration
vals['opportunistic'] = opportunistic
return vals
return None