mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-11-26 10:39:23 +01:00
42fe6c5a15
The destructor was trying to do more than the scope of a destructor by trying to handle this single case of hostapd being restarted. Instead we can simply pass a keyword argument 'reinit' to the constructor to tell it to reinitialize everything. And as for killing hostapd this can be done in ungraceful_restart itself rather than trying to handle it in the destructor.
251 lines
7.3 KiB
Python
251 lines
7.3 KiB
Python
#!/usr/bin/python3
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import os, os.path
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import re
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import socket
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import select
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import time
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from gi.repository import GLib
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from config import ctx
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chan_freq_map = [
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None,
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2412,
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2417,
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2422,
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2427,
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2432,
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2437,
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2442,
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2447,
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2452,
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2457,
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2462,
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2467,
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2472,
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2484
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]
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ctrl_count = 0
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mainloop = GLib.MainLoop()
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class HostapdCLI(object):
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_instances = {}
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def __new__(cls, config=None, *args, **kwargs):
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hapd = ctx.hostapd[config]
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if not config:
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config = hapd.config
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if not config in cls._instances.keys():
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cls._instances[config] = object.__new__(cls, *args, **kwargs)
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cls._instances[config]._initialized = False
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return cls._instances[config]
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def _init_hostapd(self, config, reinit=False):
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global ctrl_count
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if self._initialized and not reinit:
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return
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self._initialized = True
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self.ctrl_sock = None
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if not ctx.hostapd:
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raise Exception("No hostapd instances are configured")
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if not config and len(ctx.hostapd.instances) > 1:
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raise Exception('config must be provided if more than one hostapd instance exists')
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hapd = ctx.hostapd[config]
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self.interface = hapd.intf
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self.config = hapd.config
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if not self.interface:
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raise Exception('config %s not found' % config)
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self.ifname = self.interface.name
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self.socket_path = os.path.dirname(self.interface.ctrl_interface)
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self.cmdline = ['hostapd_cli', '-p', self.socket_path, '-i', self.ifname]
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self.local_ctrl = '/tmp/hostapd_' + str(os.getpid()) + '_' + \
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str(ctrl_count)
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self.ctrl_sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
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self.ctrl_sock.bind(self.local_ctrl)
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self.ctrl_sock.connect(self.socket_path + '/' + self.ifname)
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if 'OK' not in self._ctrl_request('ATTACH'):
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raise Exception('ATTACH failed')
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ctrl_count = ctrl_count + 1
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def __init__(self, config=None, *args, **kwargs):
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self._init_hostapd(config)
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def _poll_event(self, event):
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if not self._data_available(0.25):
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return False
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data = self.ctrl_sock.recv(4096).decode('utf-8')
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if event in data:
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return data
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return False
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def wait_for_event(self, event, timeout=10):
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return ctx.non_block_wait(self._poll_event, timeout, event,
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exception=TimeoutError("waiting for event"))
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def _data_available(self, timeout=2):
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[r, w, e] = select.select([self.ctrl_sock], [], [], timeout)
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if r:
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return True
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return False
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def _ctrl_request(self, command, timeout=10):
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if type(command) is str:
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command = str.encode(command)
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self.ctrl_sock.send(bytes(command))
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ctx.non_block_wait(self._data_available, timeout,
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exception=TimeoutError("waiting for control response"))
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return self.ctrl_sock.recv(4096).decode('utf-8')
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def _del_hostapd(self, force=False):
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if not self.ctrl_sock:
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return
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self.ctrl_sock.close()
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try:
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os.remove(self.local_ctrl)
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except:
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pass
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def __del__(self):
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self._del_hostapd()
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HostapdCLI._instances[self.config] = None
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# Check if this is the final instance
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destroy = len([hapd for hapd in HostapdCLI._instances.values() if hapd is not None]) == 0
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if destroy:
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HostapdCLI._instances = {}
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def set_value(self, key, value):
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cmd = self.cmdline + ['set', key, value]
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ctx.start_process(cmd, wait=True)
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def wps_push_button(self):
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ctx.start_process(self.cmdline + ['wps_pbc'], wait=True)
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def wps_pin(self, pin):
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cmd = self.cmdline + ['wps_pin', 'any', pin]
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ctx.start_process(cmd, wait=True)
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def deauthenticate(self, client_address):
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cmd = self.cmdline + ['deauthenticate', client_address]
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ctx.start_process(cmd, wait=True)
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def eapol_reauth(self, client_address):
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cmd = 'IFNAME=' + self.ifname + ' EAPOL_REAUTH ' + client_address
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self.ctrl_sock.sendall(cmd.encode('utf-8'))
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def reload(self):
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# Seemingly all three commands needed for the instance to notice
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# interface's address change
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ctx.start_process(self.cmdline + ['reload'], wait=True)
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ctx.start_process(self.cmdline + ['disable'], wait=True)
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ctx.start_process(self.cmdline + ['enable'], wait=True)
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def list_sta(self):
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proc = ctx.start_process(self.cmdline + ['list_sta'], wait=True, need_out=True)
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if not proc.out:
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return []
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return [line for line in proc.out.split('\n') if line]
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def set_neighbor(self, addr, ssid, nr):
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cmd = self.cmdline + ['set_neighbor', addr, 'ssid="%s"' % ssid, 'nr=%s' % nr]
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ctx.start_process(cmd, wait=True)
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def send_bss_transition(self, device, nr_list):
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# Send a BSS transition to a station (device). nr_list should be an
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# array of tuples containing the BSS address and neighbor report.
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# Parsing the neighbor report is a bit ugly but it makes it more
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# consistent with the set_neighbor() API, i.e. the same neighbor report
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# string could be used in both API's.
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pref = 1
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cmd = self.cmdline + ['bss_tm_req', device]
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for i in nr_list:
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addr = i[0]
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nr = i[1]
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bss_info=str(int(nr[0:8], 16))
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op_class=str(int(nr[8:10], 16))
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chan_num=nr[10:12]
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phy_num=nr[14:16]
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cmd += ['pref=%s' % str(pref), 'neighbor=%s,%s,%s,%s,%s' % \
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(addr, bss_info, op_class, chan_num, phy_num)]
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pref += 1
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proc = ctx.start_process(cmd, wait=True, need_out=True)
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if 'OK' not in proc.out:
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raise Exception('BSS_TM_REQ failed, is hostapd built with CONFIG_WNM_AP=y?')
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def ungraceful_restart(self):
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'''
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Ungracefully kill and restart hostapd
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'''
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ctx.stop_process(ctx.hostapd.process, True)
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self.interface.set_interface_state('down')
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self.interface.set_interface_state('up')
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self._del_hostapd(force=True)
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ctx.start_hostapd()
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# Give hostapd a second to start and initialize the control interface
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time.sleep(1)
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# New hostapd process, so re-init
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self._init_hostapd(config=self.config, reinit=True)
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def req_beacon(self, addr, request):
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'''
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Send a RRM Beacon request
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'''
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cmd = self.cmdline + ['req_beacon', addr, request]
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ctx.start_process(cmd, wait=True)
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@property
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def bssid(self):
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cmd = self.cmdline + ['status']
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status = ctx.start_process(cmd, wait=True, need_out=True).out
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status = status.split('\n')
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bssid = [x for x in status if x.startswith('bssid')]
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bssid = bssid[0].split('=')
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return bssid[1]
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@property
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def frequency(self):
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cmd = self.cmdline + ['status']
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status = ctx.start_process(cmd, wait=True, need_out=True).out
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status = status.split('\n')
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frequency = [x for x in status if x.startswith('freq')][0]
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frequency = frequency.split('=')[1]
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return int(frequency)
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