mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-10-05 19:08:52 +02:00
df4d0eef5c
In many tests the hostapd configuration does not include all the values that a test uses. Its expected that each individual test will add the values required. In many cases its required each test slightly alter the configuration for each change every other test has to set the value back to either a default or its own setting. This results in a ton of duplicated code mainly setting things back to defaults. To help with this problem the hostapd configuration is read in initially and stored as the default. Tests can then simply call .default() to set everything back. This significantly reduces or completely removes a ton of set_value() calls. This does require that each hostapd configuration file includes all values any of the subtests will set, which is a small price for the convenience.
344 lines
11 KiB
Python
344 lines
11 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 weakref import WeakValueDictionary
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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 = WeakValueDictionary()
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def __new__(cls, config=None, *args, **kwargs):
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hapd = ctx.get_hapd_instance(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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obj = object.__new__(cls, *args, **kwargs)
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obj._initialized = False
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cls._instances[config] = obj
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return cls._instances[config]
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def __init__(self, config=None, *args, **kwargs):
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global ctrl_count
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if self._initialized:
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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 sum([len(hapd.instances) for hapd in ctx.hostapd]) > 1:
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raise Exception('config must be provided if more than one hostapd instance exists')
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hapd = ctx.get_hapd_instance(config)
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self.interface = hapd.intf
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self._config_path = "/tmp/" + hapd.config
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self._default_config = self._get_config(self._config_path)
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# The vendor_elements is somewhat of a special case because you can't
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# set it to 'nothing' within the hostapd config. In most cases tests do
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# not use this and we don't want to require they unset this value
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# during initialization. Default this to '' so set_value won't throw
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# an exception.
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if self._default_config.get('vendor_elements', None) == None:
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self._default_config['vendor_elements'] = ''
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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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self.events = []
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self.io_watch = GLib.io_add_watch(self.ctrl_sock, GLib.IO_IN, self._handle_data_in)
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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 _get_config(self, path):
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f = open(path)
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lines = f.readlines()
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f.close()
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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])
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def _handle_data_in(self, sock, *args):
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newdata = sock.recv(4096)
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decoded = newdata.decode('utf-8')
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if len(decoded) >= 3 and decoded[0] == '<' and decoded[2] == '>':
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decoded = decoded[3:]
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while len(decoded) and decoded[-1] == '\n':
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decoded = decoded[:-1]
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self.events.insert(0, decoded)
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return True
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def _poll_event(self, event, disallow):
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# Look through the list (most recent is first) until the even is found.
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# Once found consume this event and any older ones as to not
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# accidentally trigger a false positive later on.
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for idx, e in enumerate(self.events):
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for d in disallow:
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if d in e:
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raise Exception('Event %s found while waiting for %s' % (d, event))
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if event in e:
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self.events = self.events[:idx]
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return e
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return False
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def wait_for_event(self, event, timeout=10, disallow=[]):
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if event == 'AP-ENABLED':
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if self.enabled:
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return 'AP-ENABLED'
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return ctx.non_block_wait(self._poll_event, timeout, event, disallow,
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exception=TimeoutError("waiting for event"))
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def _data_available(self):
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[r, w, e] = select.select([self.ctrl_sock], [], [])
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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__(self):
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if self.ctrl_sock:
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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 set_value(self, key, value):
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# Don't allow new settings, defaults should always be in hostapd config
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if self._default_config.get(key, None) == None:
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raise Exception("Untracked setting '%s'! Please set default in hostapd config" % key)
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cmd = self.cmdline + ['set', key, value]
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ctx.start_process(cmd).wait()
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def wps_push_button(self):
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ctx.start_process(self.cmdline + ['wps_pbc']).wait()
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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()
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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()
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def eapol_reauth(self, client_address):
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self.events = []
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cmd = 'EAPOL_REAUTH ' + client_address
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self.ctrl_sock.sendall(cmd.encode('utf-8'))
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self.wait_for_event('CTRL-EVENT-EAP-STARTED', disallow=['AP-STA-DISCONNECTED'])
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self.wait_for_event('CTRL-EVENT-EAP-SUCCESS', disallow=['AP-STA-DISCONNECTED'])
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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()
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ctx.start_process(self.cmdline + ['disable']).wait()
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ctx.start_process(self.cmdline + ['enable']).wait()
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def default(self):
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for k, v in self._default_config.items():
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self.set_value(k, v)
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self.reload()
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def disable(self):
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ctx.start_process(self.cmdline + ['disable']).wait()
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def list_sta(self):
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proc = ctx.start_process(self.cmdline + ['list_sta'])
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proc.wait()
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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()
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def remove_neighbor(self, addr):
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cmd = self.cmdline + ['remove_neighbor', addr]
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ctx.start_process(cmd).wait()
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def send_bss_transition(self, device, nr_list, disassoc_imminent=True):
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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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if disassoc_imminent:
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cmd.append('disassoc_imminent=1')
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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)
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proc.wait()
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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 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()
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def rekey(self, address=None):
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if address:
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cmd = 'REKEY_PTK %s' % address
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self.ctrl_sock.sendall(cmd.encode('utf-8'))
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self.events = []
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self.wait_for_event('EAPOL-4WAY-HS-COMPLETED', disallow=['AP-STA-DISCONNECTED'])
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return
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cmd = 'REKEY_GTK'
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self.ctrl_sock.sendall(cmd.encode('utf-8'))
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def resend_m3(self, address):
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cmd = 'RESEND_M3 %s' % address
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self.ctrl_sock.sendall(cmd.encode('utf-8'))
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def chan_switch(self, channel):
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if channel > len(chan_freq_map):
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raise Exception("Only 2.4GHz channels supported for chan_switch")
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cmd = self.cmdline + ['chan_switch', '50', str(chan_freq_map[channel])]
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ctx.start_process(cmd).wait()
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self.wait_for_event('AP-CSA-FINISHED')
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def _get_status(self):
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ret = {}
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cmd = self.cmdline + ['status']
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proc = ctx.start_process(cmd)
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proc.wait()
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status = proc.out.strip().split('\n')
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for kv in status:
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k, v = kv.split('=')
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ret[k] = v
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return ret
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@property
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def bssid(self):
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return self._get_status()['bssid[0]']
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@property
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def frequency(self):
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return int(self._get_status()['freq'])
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@property
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def enabled(self):
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return self._get_status()['state'] == 'ENABLED'
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def set_address(self, mac):
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os.system('ip link set dev %s down' % self.ifname)
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os.system('ip link set dev %s addr %s up' % (self.ifname, mac))
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self.reload()
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self.wait_for_event("AP-ENABLED")
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def _add_neighbors(self, *args, op_class=81):
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for hapd in args:
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status = hapd._get_status()
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ssid = status['ssid[0]']
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bssid = status['bssid[0]']
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channel = int(status['channel'])
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if (channel > 14 and op_class == 81):
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raise Exception("default add_neighbors assumes opclass 0x51!")
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channel = '{:02x}'.format(channel)
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oper_class = '{:02x}'.format(op_class)
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self.set_neighbor(bssid, ssid, '%s8f000000%s%s060603000000' %
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(bssid.replace(':', ''), oper_class, channel))
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@classmethod
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def group_neighbors(cls, *args):
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for hapd in args:
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others = [h for h in args if h != hapd]
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hapd._add_neighbors(*others)
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