251 lines
8.5 KiB
Python
251 lines
8.5 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 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):
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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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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 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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self.request("P2P_STOP_FIND")
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self.request("P2P_FLUSH")
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self.request("P2P_GROUP_REMOVE *")
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self.request("REMOVE_NETWORK *")
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self.request("REMOVE_CRED *")
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self.group_ifname = None
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def get_status(self, field):
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res = self.request("STATUS")
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lines = res.splitlines()
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for l in lines:
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[name,value] = l.split('=', 1)
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if name == field:
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return value
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return None
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def get_group_status(self, field):
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res = self.group_request("STATUS")
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lines = res.splitlines()
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for l in lines:
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[name,value] = l.split('=', 1)
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if name == field:
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return value
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return None
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def p2p_dev_addr(self):
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return self.get_status("p2p_device_address")
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def p2p_interface_addr(self):
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return self.get_group_status("address")
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def p2p_listen(self):
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return self.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.request("P2P_FIND type=social")
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return self.request("P2P_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.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):
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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()
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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 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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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):
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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 "OK" in self.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_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):
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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
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if go_intent:
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cmd = cmd + ' go_intent=' + str(go_intent)
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if "OK" in self.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_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 * 2:
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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 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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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.iname
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if "OK" not in self.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):
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self.dump_monitor()
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cmd = "P2P_GROUP_ADD"
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if "OK" in self.request(cmd):
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ev = self.wait_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_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):
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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.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_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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