mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-11-29 22:19:23 +01:00
719646df4d
Add the new wpas.Wpas class roughly based on hostapd.HostapdCLI but only
adding methods for the P2P-related stuff.
Adding "wpa_supplicant" to -v will enable output from the wpa_supplicant
process to be printed and "wpa_supplicant-dbg" will make it more verbose
("wpa_supplicant" is not needed because it seems to be automatically
enabled because of the glob matching in ctx.is_verbose)
243 lines
8.3 KiB
Python
243 lines
8.3 KiB
Python
#!/usr/bin/python3
|
|
import os
|
|
import socket
|
|
from gi.repository import GLib
|
|
from config import ctx
|
|
|
|
ctrl_count = 0
|
|
|
|
class Wpas:
|
|
def _start_wpas(self, config_name=None, p2p=False):
|
|
global ctrl_count
|
|
|
|
main_interface = None
|
|
for interface in ctx.wpas_interfaces:
|
|
if config_name is None or interface.config == config_name:
|
|
if main_interface is not None:
|
|
raise Exception('More than was wpa_supplicant interface matches given config')
|
|
main_interface = interface
|
|
|
|
if main_interface is None:
|
|
raise Exception('No matching wpa_supplicant interface')
|
|
|
|
ifname = main_interface.name
|
|
if p2p:
|
|
ifname = 'p2p-dev-' + ifname
|
|
|
|
self.interface = main_interface
|
|
self.ifname = ifname
|
|
self.config_path = '/tmp/' + self.interface.config
|
|
self.config = self._get_config()
|
|
self.socket_path = self.config['ctrl_interface']
|
|
self.io_watch = None
|
|
|
|
cmd = ['wpa_supplicant', '-i', self.interface.name, '-c', self.config_path]
|
|
if ctx.is_verbose('wpa_supplicant-dbg'):
|
|
cmd += ['-d']
|
|
|
|
self.wpa_supplicant = ctx.start_process(cmd)
|
|
|
|
self.local_ctrl = '/tmp/wpas_' + str(os.getpid()) + '_' + str(ctrl_count)
|
|
ctrl_count = ctrl_count + 1
|
|
self.ctrl_sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
|
|
self.ctrl_sock.bind(self.local_ctrl)
|
|
|
|
self.remote_ctrl = self.socket_path + '/' + self.ifname
|
|
self.wpa_supplicant.wait_for_socket(self.remote_ctrl, 2)
|
|
self.ctrl_sock.connect(self.remote_ctrl)
|
|
self.io_watch = GLib.io_add_watch(self.ctrl_sock, GLib.IO_IN, self._handle_data_in)
|
|
|
|
self.p2p_peers = {}
|
|
self.p2p_go_neg_requests = {}
|
|
self.p2p_clients = {}
|
|
self.p2p_group = None
|
|
|
|
self._rx_data = []
|
|
self._ctrl_request('ATTACH')
|
|
self.wait_for_event('OK')
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
self._start_wpas(*args, **kwargs)
|
|
|
|
def _get_config(self):
|
|
f = open(self.config_path)
|
|
lines = f.readlines()
|
|
f.close()
|
|
return dict([[v.strip() for v in kv] for kv in [l.split('#', 1)[0].split('=', 1) for l in lines] if len(kv) == 2])
|
|
|
|
def wait_for_event(self, event, timeout=10):
|
|
self._wait_timed_out = False
|
|
|
|
def wait_timeout_cb():
|
|
self._wait_timed_out = True
|
|
return False
|
|
|
|
timeout = GLib.timeout_add_seconds(timeout, wait_timeout_cb)
|
|
context = ctx.mainloop.get_context()
|
|
|
|
while True:
|
|
context.iteration(may_block=True)
|
|
|
|
if event in self._rx_data:
|
|
GLib.source_remove(timeout)
|
|
return self._rx_data
|
|
|
|
if self._wait_timed_out:
|
|
raise TimeoutError('waiting for wpas event timed out')
|
|
|
|
def _event_parse(self, line):
|
|
# Unescape event parameter values in '', other escaping rules not implemented
|
|
key = None
|
|
value = ''
|
|
count = 0
|
|
quoted = False
|
|
event = {}
|
|
|
|
def handle_eow():
|
|
nonlocal key, value, count, event
|
|
if count == 0:
|
|
if key is not None or not value:
|
|
raise Exception('Bad event name')
|
|
key = 'event'
|
|
elif key is None:
|
|
if not value:
|
|
return
|
|
key = 'arg' + str(count)
|
|
event[key] = value
|
|
key = None
|
|
value = ''
|
|
count += 1
|
|
|
|
for ch in line:
|
|
if ch == '\'':
|
|
quoted = not quoted
|
|
elif quoted:
|
|
value += ch
|
|
elif ch == '=' and key is None:
|
|
key = value
|
|
value = ''
|
|
elif ch in ' \n':
|
|
handle_eow()
|
|
else:
|
|
value += ch
|
|
handle_eow()
|
|
return event
|
|
|
|
def _handle_data_in(self, sock, *args):
|
|
newdata = sock.recv(4096)
|
|
if len(newdata) == 0:
|
|
raise Exception('Wpa_s control socket error')
|
|
|
|
decoded = newdata.decode('utf-8')
|
|
if len(decoded) >= 3 and decoded[0] == '<' and decoded[2] == '>':
|
|
decoded = decoded[3:]
|
|
while len(decoded) and decoded[-1] == '\n':
|
|
decoded = decoded[:-1]
|
|
|
|
self._rx_data.append(decoded)
|
|
|
|
event = self._event_parse(decoded)
|
|
if event['event'] == 'P2P-DEVICE-FOUND':
|
|
event.pop('event')
|
|
event.pop('arg1')
|
|
self.p2p_peers[event['p2p_dev_addr']] = event
|
|
elif event['event'] == 'P2P-DEVICE-LOST':
|
|
del self.p2p_peers[event['p2p_dev_addr']]
|
|
elif event['event'] == 'P2P-GO-NEG-REQUEST':
|
|
event.pop('event')
|
|
event['p2p_dev_addr'] = event.pop('arg1')
|
|
self.p2p_go_neg_requests[event['p2p_dev_addr']] = event
|
|
elif event['event'] == 'P2P-GO-NEG-SUCCESS':
|
|
event.pop('event')
|
|
addr = event.pop('peer_dev')
|
|
event['success'] = True
|
|
event['p2p_dev_addr'] = addr
|
|
|
|
if addr in self.p2p_go_neg_requests:
|
|
self.p2p_go_neg_requests[addr].update(event)
|
|
else:
|
|
self.p2p_go_neg_requests[addr] = event
|
|
elif event['event'] == 'AP-STA-CONNECTED':
|
|
event.pop('event')
|
|
addr = event.pop('arg1')
|
|
self.p2p_clients[addr] = event
|
|
elif event['event'] == 'AP-STA-DISCONNECTED':
|
|
addr = event.pop('arg1')
|
|
del self.p2p_clients[addr]
|
|
elif event['event'] == 'P2P-GROUP-STARTED':
|
|
event.pop('event')
|
|
event['ifname'] = event.pop('arg1')
|
|
self.p2p_group = event
|
|
elif event['event'] == 'P2P-GROUP-REMOVED':
|
|
self.p2p_group = None
|
|
|
|
return True
|
|
|
|
def _ctrl_request(self, command, timeout=10):
|
|
if type(command) is str:
|
|
command = str.encode(command)
|
|
|
|
self.ctrl_sock.send(bytes(command))
|
|
|
|
# Normal find phase with listen and active scan states
|
|
def p2p_find(self):
|
|
self._rx_data = []
|
|
self._ctrl_request('P2P_SET disc_int 2 3 300')
|
|
self.wait_for_event('OK')
|
|
self._rx_data = []
|
|
self._ctrl_request('P2P_FIND type=social')
|
|
self.wait_for_event('OK')
|
|
|
|
# Like p2p_find but uses only listen states
|
|
def p2p_listen(self):
|
|
self._rx_data = []
|
|
self._ctrl_request('P2P_LISTEN')
|
|
self.wait_for_event('OK')
|
|
|
|
# Stop a p2p_find or p2p_listen
|
|
def p2p_stop_find_listen(self):
|
|
self._rx_data = []
|
|
self._ctrl_request('P2P_STOP_FIND')
|
|
self.wait_for_event('OK')
|
|
|
|
def p2p_connect(self, peer, pin=None, go_intent=None):
|
|
self._rx_data = []
|
|
self._ctrl_request('P2P_CONNECT ' + peer['p2p_dev_addr'] + ' ' + ('pbc' if pin is None else pin) +
|
|
('' if go_intent is None else 'go_intent=' + str(go_intent)))
|
|
self.wait_for_event('OK')
|
|
|
|
def p2p_accept_go_neg_request(self, request, pin=None, go_intent=None):
|
|
self._rx_data = []
|
|
self._ctrl_request('P2P_CONNECT ' + request['p2p_dev_addr'] + ' ' + ('pbc' if pin is None else pin) +
|
|
('' if go_intent is None else 'go_intent=' + str(go_intent)))
|
|
self.wait_for_event('OK')
|
|
|
|
# Pre-accept the next GO Negotiation Request from this peer to avoid the extra Respone + Request frames
|
|
def p2p_authorize(self, peer, pin=None, go_intent=None):
|
|
self._rx_data = []
|
|
self._ctrl_request('P2P_CONNECT ' + peer['p2p_dev_addr'] + ' ' + ('pbc' if pin is None else pin) +
|
|
('' if go_intent is None else 'go_intent=' + str(go_intent)) + ' auth')
|
|
self.wait_for_event('OK')
|
|
|
|
# Probably needed: remove references to self so that the GC can call __del__ automatically
|
|
def clean_up(self):
|
|
if self.io_watch is not None:
|
|
GLib.source_remove(self.io_watch)
|
|
self.io_watch = None
|
|
if self.wpa_supplicant is not None:
|
|
ctx.stop_process(self.wpa_supplicant)
|
|
self.wpa_supplicant = None
|
|
|
|
def _stop_wpas(self):
|
|
self.clean_up()
|
|
if self.ctrl_sock:
|
|
self.ctrl_sock.close()
|
|
self.ctrl_sock = None
|
|
if os.path.exists(self.remote_ctrl):
|
|
os.remove(self.remote_ctrl)
|
|
if os.path.exists(self.local_ctrl):
|
|
os.remove(self.local_ctrl)
|
|
|
|
def __del__(self):
|
|
self._stop_wpas()
|