hostap/tests/hwsim/wpasupplicant.py

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#!/usr/bin/python
#
# Python class for controlling wpa_supplicant
# Copyright (c) 2013, 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 wpaspy
logger = logging.getLogger(__name__)
wpas_ctrl = '/var/run/wpa_supplicant'
class WpaSupplicant:
def __init__(self, ifname):
self.ifname = ifname
self.group_ifname = None
self.ctrl = wpaspy.Ctrl(os.path.join(wpas_ctrl, ifname))
self.mon = wpaspy.Ctrl(os.path.join(wpas_ctrl, ifname))
self.mon.attach()
def request(self, cmd):
logger.debug(self.ifname + ": CTRL: " + cmd)
return self.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):
self.request("P2P_STOP_FIND")
self.request("P2P_FLUSH")
self.request("P2P_GROUP_REMOVE *")
self.request("REMOVE_NETWORK *")
self.request("REMOVE_CRED *")
self.group_ifname = None
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 get_status(self, field):
res = self.request("STATUS")
lines = res.splitlines()
for l in lines:
[name,value] = l.split('=', 1)
if name == field:
return value
return None
def get_group_status(self, field):
res = self.group_request("STATUS")
lines = res.splitlines()
for l in lines:
[name,value] = l.split('=', 1)
if name == field:
return value
return None
def p2p_dev_addr(self):
return self.get_status("p2p_device_address")
def p2p_interface_addr(self):
return self.get_group_status("address")
def p2p_listen(self):
return self.request("P2P_LISTEN")
def p2p_find(self, social=False):
if social:
return self.request("P2P_FIND type=social")
return self.request("P2P_FIND")
def p2p_stop_find(self):
return self.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.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):
logger.info(self.ifname + ": Trying to discover peer " + peer)
if 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 group_form_result(self, ev, expect_failure=False):
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]
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]
return res
def p2p_go_neg_auth(self, peer, pin, method, go_intent=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 "OK" in self.request(cmd):
return None
raise Exception("P2P_CONNECT (auth) failed")
def p2p_go_neg_auth_result(self, timeout=1, expect_failure=False):
ev = self.wait_event(["P2P-GROUP-STARTED","P2P-GO-NEG-FAILURE"], 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)
def p2p_go_neg_init(self, peer, pin, method, timeout=0, go_intent=None, expect_failure=False):
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 "OK" in self.request(cmd):
if timeout == 0:
self.dump_monitor()
return None
ev = self.wait_event(["P2P-GROUP-STARTED","P2P-GO-NEG-FAILURE"], 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)
raise Exception("P2P_CONNECT failed")
def wait_event(self, events, timeout):
count = 0
while count < timeout * 10:
count = count + 1
time.sleep(0.1)
while self.mon.pending():
ev = self.mon.recv()
logger.debug(self.ifname + ": " + ev)
for event in events:
if event in ev:
return ev
return None
def dump_monitor(self):
while self.mon.pending():
ev = self.mon.recv()
logger.debug(self.ifname + ": " + ev)
def remove_group(self, ifname=None):
if ifname is None:
ifname = self.group_ifname if self.group_ifname else self.iname
if "OK" not in self.request("P2P_GROUP_REMOVE " + ifname):
raise Exception("Group could not be removed")
self.group_ifname = None
def p2p_start_go(self, persistent=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 "OK" in self.request(cmd):
ev = self.wait_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_connect_group(self, go_addr, pin, timeout=0):
self.dump_monitor()
if not self.discover_peer(go_addr, social=False):
raise Exception("GO " + go_addr + " not found")
self.dump_monitor()
cmd = "P2P_CONNECT " + go_addr + " " + pin + " join"
if "OK" in self.request(cmd):
if timeout == 0:
self.dump_monitor()
return None
ev = self.wait_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