515 lines
18 KiB
Python
515 lines
18 KiB
Python
#!/usr/bin/python
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#
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# Python class for controlling wpa_supplicant
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# Copyright (c) 2013, Jouni Malinen <j@w1.fi>
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#
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# This software may be distributed under the terms of the BSD license.
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# See README for more details.
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import os
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import time
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import logging
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import re
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import subprocess
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import wpaspy
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logger = logging.getLogger(__name__)
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wpas_ctrl = '/var/run/wpa_supplicant'
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class WpaSupplicant:
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def __init__(self, ifname, global_iface=None):
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self.ifname = ifname
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self.group_ifname = None
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self.ctrl = wpaspy.Ctrl(os.path.join(wpas_ctrl, ifname))
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self.mon = wpaspy.Ctrl(os.path.join(wpas_ctrl, ifname))
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self.mon.attach()
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self.global_iface = global_iface
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if global_iface:
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self.global_ctrl = wpaspy.Ctrl(global_iface)
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self.global_mon = wpaspy.Ctrl(global_iface)
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self.global_mon.attach()
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def request(self, cmd):
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logger.debug(self.ifname + ": CTRL: " + cmd)
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return self.ctrl.request(cmd)
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def global_request(self, cmd):
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if self.global_iface is None:
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self.request(cmd)
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else:
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logger.debug(self.ifname + ": CTRL: " + cmd)
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return self.global_ctrl.request(cmd)
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def group_request(self, cmd):
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if self.group_ifname and self.group_ifname != self.ifname:
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logger.debug(self.group_ifname + ": CTRL: " + cmd)
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gctrl = wpaspy.Ctrl(os.path.join(wpas_ctrl, self.group_ifname))
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return gctrl.request(cmd)
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return self.request(cmd)
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def ping(self):
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return "PONG" in self.request("PING")
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def reset(self):
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res = self.request("FLUSH")
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if not "OK" in res:
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logger.info("FLUSH to " + self.ifname + " failed: " + res)
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self.request("SET ignore_old_scan_res 0")
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self.request("P2P_SET per_sta_psk 0")
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self.request("P2P_SET disabled 0")
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self.request("P2P_SERVICE_FLUSH")
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self.group_ifname = None
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self.dump_monitor()
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iter = 0
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while iter < 60:
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state = self.get_driver_status_field("scan_state")
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if "SCAN_STARTED" in state or "SCAN_REQUESTED" in state:
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logger.info(self.ifname + ": Waiting for scan operation to complete before continuing")
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time.sleep(1)
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else:
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break
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iter = iter + 1
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if iter == 60:
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logger.error(self.ifname + ": Driver scan state did not clear")
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print "Trying to clear cfg80211/mac80211 scan state"
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try:
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cmd = ["sudo", "ifconfig", self.ifname, "down"]
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subprocess.call(cmd)
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except subprocess.CalledProcessError, e:
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logger.info("ifconfig failed: " + str(e.returncode))
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logger.info(e.output)
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try:
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cmd = ["sudo", "ifconfig", self.ifname, "up"]
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subprocess.call(cmd)
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except subprocess.CalledProcessError, e:
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logger.info("ifconfig failed: " + str(e.returncode))
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logger.info(e.output)
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if not self.ping():
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logger.info("No PING response from " + self.ifname + " after reset")
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def add_network(self):
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id = self.request("ADD_NETWORK")
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if "FAIL" in id:
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raise Exception("ADD_NETWORK failed")
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return int(id)
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def remove_network(self, id):
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id = self.request("REMOVE_NETWORK " + str(id))
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if "FAIL" in id:
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raise Exception("REMOVE_NETWORK failed")
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return None
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def set_network(self, id, field, value):
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res = self.request("SET_NETWORK " + str(id) + " " + field + " " + value)
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if "FAIL" in res:
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raise Exception("SET_NETWORK failed")
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return None
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def set_network_quoted(self, id, field, value):
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res = self.request("SET_NETWORK " + str(id) + " " + field + ' "' + value + '"')
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if "FAIL" in res:
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raise Exception("SET_NETWORK failed")
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return None
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def add_cred(self):
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id = self.request("ADD_CRED")
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if "FAIL" in id:
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raise Exception("ADD_CRED failed")
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return int(id)
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def remove_cred(self, id):
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id = self.request("REMOVE_CRED " + str(id))
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if "FAIL" in id:
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raise Exception("REMOVE_CRED failed")
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return None
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def set_cred(self, id, field, value):
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res = self.request("SET_CRED " + str(id) + " " + field + " " + value)
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if "FAIL" in res:
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raise Exception("SET_CRED failed")
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return None
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def set_cred_quoted(self, id, field, value):
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res = self.request("SET_CRED " + str(id) + " " + field + ' "' + value + '"')
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if "FAIL" in res:
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raise Exception("SET_CRED failed")
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return None
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def select_network(self, id):
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id = self.request("SELECT_NETWORK " + str(id))
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if "FAIL" in id:
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raise Exception("SELECT_NETWORK failed")
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return None
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def connect_network(self, id):
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self.dump_monitor()
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self.select_network(id)
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ev = self.wait_event(["CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Association with the AP timed out")
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self.dump_monitor()
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def get_status(self):
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res = self.request("STATUS")
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lines = res.splitlines()
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vals = dict()
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for l in lines:
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[name,value] = l.split('=', 1)
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vals[name] = value
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return vals
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def get_status_field(self, field):
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vals = self.get_status()
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if field in vals:
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return vals[field]
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return None
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def get_group_status(self):
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res = self.group_request("STATUS")
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lines = res.splitlines()
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vals = dict()
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for l in lines:
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[name,value] = l.split('=', 1)
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vals[name] = value
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return vals
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def get_group_status_field(self, field):
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vals = self.get_group_status()
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if field in vals:
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return vals[field]
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return None
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def get_driver_status(self):
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res = self.request("STATUS-DRIVER")
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lines = res.splitlines()
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vals = dict()
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for l in lines:
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[name,value] = l.split('=', 1)
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vals[name] = value
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return vals
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def get_driver_status_field(self, field):
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vals = self.get_driver_status()
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if field in vals:
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return vals[field]
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return None
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def p2p_dev_addr(self):
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return self.get_status_field("p2p_device_address")
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def p2p_interface_addr(self):
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return self.get_group_status_field("address")
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def p2p_listen(self):
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return self.global_request("P2P_LISTEN")
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def p2p_find(self, social=False):
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if social:
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return self.global_request("P2P_FIND type=social")
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return self.global_request("P2P_FIND")
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def p2p_stop_find(self):
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return self.global_request("P2P_STOP_FIND")
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def wps_read_pin(self):
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#TODO: make this random
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self.pin = "12345670"
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return self.pin
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def peer_known(self, peer, full=True):
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res = self.global_request("P2P_PEER " + peer)
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if peer.lower() not in res.lower():
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return False
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if not full:
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return True
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return "[PROBE_REQ_ONLY]" not in res
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def discover_peer(self, peer, full=True, timeout=15, social=True):
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logger.info(self.ifname + ": Trying to discover peer " + peer)
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if self.peer_known(peer, full):
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return True
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self.p2p_find(social)
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count = 0
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while count < timeout:
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time.sleep(1)
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count = count + 1
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if self.peer_known(peer, full):
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return True
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return False
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def get_peer(self, peer):
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res = self.global_request("P2P_PEER " + peer)
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if peer.lower() not in res.lower():
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raise Exception("Peer information not available")
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lines = res.splitlines()
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vals = dict()
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for l in lines:
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if '=' in l:
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[name,value] = l.split('=', 1)
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vals[name] = value
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return vals
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def group_form_result(self, ev, expect_failure=False):
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if expect_failure:
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if "P2P-GROUP-STARTED" in ev:
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raise Exception("Group formation succeeded when expecting failure")
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exp = r'<.>(P2P-GO-NEG-FAILURE) status=([0-9]*)'
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s = re.split(exp, ev)
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if len(s) < 3:
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return None
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res = {}
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res['result'] = 'go-neg-failed'
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res['status'] = int(s[2])
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return res
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if "P2P-GROUP-STARTED" not in ev:
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raise Exception("No P2P-GROUP-STARTED event seen")
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exp = r'<.>(P2P-GROUP-STARTED) ([^ ]*) ([^ ]*) ssid="(.*)" freq=([0-9]*) ((?:psk=.*)|(?:passphrase=".*")) go_dev_addr=([0-9a-f:]*)'
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s = re.split(exp, ev)
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if len(s) < 8:
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raise Exception("Could not parse P2P-GROUP-STARTED")
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res = {}
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res['result'] = 'success'
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res['ifname'] = s[2]
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self.group_ifname = s[2]
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res['role'] = s[3]
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res['ssid'] = s[4]
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res['freq'] = s[5]
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if "[PERSISTENT]" in ev:
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res['persistent'] = True
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else:
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res['persistent'] = False
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p = re.match(r'psk=([0-9a-f]*)', s[6])
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if p:
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res['psk'] = p.group(1)
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p = re.match(r'passphrase="(.*)"', s[6])
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if p:
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res['passphrase'] = p.group(1)
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res['go_dev_addr'] = s[7]
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return res
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def p2p_go_neg_auth(self, peer, pin, method, go_intent=None, persistent=False):
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if not self.discover_peer(peer):
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raise Exception("Peer " + peer + " not found")
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self.dump_monitor()
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cmd = "P2P_CONNECT " + peer + " " + pin + " " + method + " auth"
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if go_intent:
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cmd = cmd + ' go_intent=' + str(go_intent)
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if persistent:
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cmd = cmd + " persistent"
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if "OK" in self.global_request(cmd):
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return None
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raise Exception("P2P_CONNECT (auth) failed")
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def p2p_go_neg_auth_result(self, timeout=1, expect_failure=False):
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ev = self.wait_global_event(["P2P-GROUP-STARTED","P2P-GO-NEG-FAILURE"], timeout);
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if ev is None:
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if expect_failure:
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return None
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raise Exception("Group formation timed out")
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self.dump_monitor()
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return self.group_form_result(ev, expect_failure)
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def p2p_go_neg_init(self, peer, pin, method, timeout=0, go_intent=None, expect_failure=False, persistent=False, freq=None):
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if not self.discover_peer(peer):
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raise Exception("Peer " + peer + " not found")
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self.dump_monitor()
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if pin:
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cmd = "P2P_CONNECT " + peer + " " + pin + " " + method
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else:
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cmd = "P2P_CONNECT " + peer + " " + method
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if go_intent:
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cmd = cmd + ' go_intent=' + str(go_intent)
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if freq:
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cmd = cmd + ' freq=' + str(freq)
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if persistent:
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cmd = cmd + " persistent"
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if "OK" in self.global_request(cmd):
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if timeout == 0:
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self.dump_monitor()
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return None
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ev = self.wait_global_event(["P2P-GROUP-STARTED","P2P-GO-NEG-FAILURE"], timeout)
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if ev is None:
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if expect_failure:
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return None
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raise Exception("Group formation timed out")
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self.dump_monitor()
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return self.group_form_result(ev, expect_failure)
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raise Exception("P2P_CONNECT failed")
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def wait_event(self, events, timeout):
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count = 0
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while count < timeout * 10:
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count = count + 1
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time.sleep(0.1)
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while self.mon.pending():
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ev = self.mon.recv()
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logger.debug(self.ifname + ": " + ev)
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for event in events:
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if event in ev:
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return ev
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return None
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def wait_global_event(self, events, timeout):
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if self.global_iface is None:
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self.wait_event(events, timeout)
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else:
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count = 0
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while count < timeout * 10:
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count = count + 1
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time.sleep(0.1)
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while self.global_mon.pending():
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ev = self.global_mon.recv()
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logger.debug(self.ifname + "(global): " + ev)
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for event in events:
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if event in ev:
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return ev
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return None
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def wait_go_ending_session(self):
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ev = self.wait_event(["P2P-GROUP-REMOVED"], timeout=3)
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if ev is None:
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raise Exception("Group removal event timed out")
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if "reason=GO_ENDING_SESSION" not in ev:
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raise Exception("Unexpected group removal reason")
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def dump_monitor(self):
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while self.mon.pending():
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ev = self.mon.recv()
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logger.debug(self.ifname + ": " + ev)
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while self.global_mon.pending():
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ev = self.global_mon.recv()
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logger.debug(self.ifname + "(global): " + ev)
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def remove_group(self, ifname=None):
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if ifname is None:
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ifname = self.group_ifname if self.group_ifname else self.ifname
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if "OK" not in self.global_request("P2P_GROUP_REMOVE " + ifname):
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raise Exception("Group could not be removed")
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self.group_ifname = None
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def p2p_start_go(self, persistent=None, freq=None):
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self.dump_monitor()
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cmd = "P2P_GROUP_ADD"
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if persistent is None:
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pass
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elif persistent is True:
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cmd = cmd + " persistent"
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else:
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cmd = cmd + " persistent=" + str(persistent)
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if freq:
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cmd = cmd + " freq=" + str(freq)
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if "OK" in self.global_request(cmd):
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ev = self.wait_global_event(["P2P-GROUP-STARTED"], timeout=5)
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if ev is None:
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raise Exception("GO start up timed out")
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self.dump_monitor()
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return self.group_form_result(ev)
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raise Exception("P2P_GROUP_ADD failed")
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def p2p_go_authorize_client(self, pin):
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cmd = "WPS_PIN any " + pin
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if "FAIL" in self.group_request(cmd):
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raise Exception("Failed to authorize client connection on GO")
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return None
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def p2p_go_authorize_client_pbc(self):
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cmd = "WPS_PBC"
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if "FAIL" in self.group_request(cmd):
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raise Exception("Failed to authorize client connection on GO")
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return None
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def p2p_connect_group(self, go_addr, pin, timeout=0):
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self.dump_monitor()
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if not self.discover_peer(go_addr, social=False):
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raise Exception("GO " + go_addr + " not found")
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self.dump_monitor()
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cmd = "P2P_CONNECT " + go_addr + " " + pin + " join"
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if "OK" in self.global_request(cmd):
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if timeout == 0:
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self.dump_monitor()
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return None
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ev = self.wait_global_event(["P2P-GROUP-STARTED"], timeout)
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if ev is None:
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raise Exception("Joining the group timed out")
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self.dump_monitor()
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return self.group_form_result(ev)
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raise Exception("P2P_CONNECT(join) failed")
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def tdls_setup(self, peer):
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cmd = "TDLS_SETUP " + peer
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if "FAIL" in self.group_request(cmd):
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raise Exception("Failed to request TDLS setup")
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return None
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def tdls_teardown(self, peer):
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cmd = "TDLS_TEARDOWN " + peer
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if "FAIL" in self.group_request(cmd):
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raise Exception("Failed to request TDLS teardown")
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return None
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def connect(self, ssid, psk=None, proto=None, key_mgmt=None, wep_key0=None, ieee80211w=None, pairwise=None, group=None, scan_freq=None):
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logger.info("Connect STA " + self.ifname + " to AP")
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id = self.add_network()
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self.set_network_quoted(id, "ssid", ssid)
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if psk:
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self.set_network_quoted(id, "psk", psk)
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if proto:
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self.set_network(id, "proto", proto)
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if key_mgmt:
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self.set_network(id, "key_mgmt", key_mgmt)
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if ieee80211w:
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self.set_network(id, "ieee80211w", ieee80211w)
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if pairwise:
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self.set_network(id, "pairwise", pairwise)
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if group:
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self.set_network(id, "group", group)
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if wep_key0:
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self.set_network(id, "wep_key0", wep_key0)
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if scan_freq:
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self.set_network(id, "scan_freq", scan_freq)
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self.connect_network(id)
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def scan(self, type=None):
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if type:
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cmd = "SCAN TYPE=" + type
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else:
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cmd = "SCAN"
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self.dump_monitor()
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if not "OK" in self.request(cmd):
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raise Exception("Failed to trigger scan")
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ev = self.wait_event(["CTRL-EVENT-SCAN-RESULTS"], 15)
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if ev is None:
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raise Exception("Scan timed out")
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def roam(self, bssid):
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self.dump_monitor()
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self.request("ROAM " + bssid)
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|
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):
|
|
self.dump_monitor()
|
|
if new_ssid:
|
|
self.request("WPS_REG " + bssid + " " + pin + " " +
|
|
new_ssid.encode("hex") + " " + key_mgmt + " " +
|
|
cipher + " " + new_passphrase.encode("hex"))
|
|
ev = self.wait_event(["WPS-SUCCESS"], timeout=15)
|
|
else:
|
|
self.request("WPS_REG " + bssid + " " + pin)
|
|
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")
|