d1fb06c947
It was clearly too easy to get unexpected behavior by accidentially passing in a string instead of a list of strings to these functions, so enforce the correct type to notice such issues automatically. Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
732 lines
23 KiB
Python
732 lines
23 KiB
Python
# Python class for controlling hostapd
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# Copyright (c) 2013-2019, 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 binascii
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import struct
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import wpaspy
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import remotehost
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import utils
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import subprocess
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logger = logging.getLogger()
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hapd_ctrl = '/var/run/hostapd'
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hapd_global = '/var/run/hostapd-global'
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def mac2tuple(mac):
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return struct.unpack('6B', binascii.unhexlify(mac.replace(':', '')))
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class HostapdGlobal:
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def __init__(self, apdev=None, global_ctrl_override=None):
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try:
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hostname = apdev['hostname']
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port = apdev['port']
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except:
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hostname = None
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port = 8878
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self.host = remotehost.Host(hostname)
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self.hostname = hostname
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self.port = port
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if hostname is None:
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global_ctrl = hapd_global
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if global_ctrl_override:
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global_ctrl = global_ctrl_override
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self.ctrl = wpaspy.Ctrl(global_ctrl)
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self.mon = wpaspy.Ctrl(global_ctrl)
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self.dbg = ""
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else:
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self.ctrl = wpaspy.Ctrl(hostname, port)
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self.mon = wpaspy.Ctrl(hostname, port)
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self.dbg = hostname + "/" + str(port)
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self.mon.attach()
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def cmd_execute(self, cmd_array, shell=False):
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if self.hostname is None:
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if shell:
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cmd = ' '.join(cmd_array)
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else:
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cmd = cmd_array
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proc = subprocess.Popen(cmd, stderr=subprocess.STDOUT,
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stdout=subprocess.PIPE, shell=shell)
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out = proc.communicate()[0]
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ret = proc.returncode
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return ret, out.decode()
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else:
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return self.host.execute(cmd_array)
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def request(self, cmd, timeout=10):
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logger.debug(self.dbg + ": CTRL(global): " + cmd)
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return self.ctrl.request(cmd, timeout)
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def wait_event(self, events, timeout):
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start = os.times()[4]
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while True:
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while self.mon.pending():
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ev = self.mon.recv()
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logger.debug(self.dbg + "(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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now = os.times()[4]
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remaining = start + timeout - now
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if remaining <= 0:
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break
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if not self.mon.pending(timeout=remaining):
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break
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return None
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def add(self, ifname, driver=None):
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cmd = "ADD " + ifname + " " + hapd_ctrl
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if driver:
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cmd += " " + driver
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res = self.request(cmd)
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if "OK" not in res:
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raise Exception("Could not add hostapd interface " + ifname)
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def add_iface(self, ifname, confname):
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res = self.request("ADD " + ifname + " config=" + confname)
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if "OK" not in res:
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raise Exception("Could not add hostapd interface")
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def add_bss(self, phy, confname, ignore_error=False):
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res = self.request("ADD bss_config=" + phy + ":" + confname)
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if "OK" not in res:
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if not ignore_error:
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raise Exception("Could not add hostapd BSS")
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def remove(self, ifname):
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self.request("REMOVE " + ifname, timeout=30)
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def relog(self):
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self.request("RELOG")
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def flush(self):
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self.request("FLUSH")
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def get_ctrl_iface_port(self, ifname):
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if self.hostname is None:
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return None
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res = self.request("INTERFACES ctrl")
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lines = res.splitlines()
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found = False
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for line in lines:
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words = line.split()
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if words[0] == ifname:
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found = True
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break
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if not found:
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raise Exception("Could not find UDP port for " + ifname)
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res = line.find("ctrl_iface=udp:")
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if res == -1:
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raise Exception("Wrong ctrl_interface format")
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words = line.split(":")
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return int(words[1])
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def terminate(self):
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self.mon.detach()
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self.mon.close()
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self.mon = None
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self.ctrl.terminate()
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self.ctrl = None
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class Hostapd:
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def __init__(self, ifname, bssidx=0, hostname=None, port=8877):
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self.hostname = hostname
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self.host = remotehost.Host(hostname, ifname)
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self.ifname = ifname
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if hostname is None:
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self.ctrl = wpaspy.Ctrl(os.path.join(hapd_ctrl, ifname))
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self.mon = wpaspy.Ctrl(os.path.join(hapd_ctrl, ifname))
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self.dbg = ifname
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else:
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self.ctrl = wpaspy.Ctrl(hostname, port)
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self.mon = wpaspy.Ctrl(hostname, port)
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self.dbg = hostname + "/" + ifname
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self.mon.attach()
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self.bssid = None
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self.bssidx = bssidx
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def cmd_execute(self, cmd_array, shell=False):
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if self.hostname is None:
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if shell:
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cmd = ' '.join(cmd_array)
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else:
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cmd = cmd_array
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proc = subprocess.Popen(cmd, stderr=subprocess.STDOUT,
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stdout=subprocess.PIPE, shell=shell)
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out = proc.communicate()[0]
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ret = proc.returncode
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return ret, out.decode()
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else:
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return self.host.execute(cmd_array)
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def close_ctrl(self):
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if self.mon is not None:
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self.mon.detach()
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self.mon.close()
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self.mon = None
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self.ctrl.close()
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self.ctrl = None
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def own_addr(self):
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if self.bssid is None:
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self.bssid = self.get_status_field('bssid[%d]' % self.bssidx)
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return self.bssid
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def request(self, cmd):
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logger.debug(self.dbg + ": CTRL: " + cmd)
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return self.ctrl.request(cmd)
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def ping(self):
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return "PONG" in self.request("PING")
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def set(self, field, value):
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if "OK" not in self.request("SET " + field + " " + value):
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raise Exception("Failed to set hostapd parameter " + field)
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def set_defaults(self):
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self.set("driver", "nl80211")
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self.set("hw_mode", "g")
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self.set("channel", "1")
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self.set("ieee80211n", "1")
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self.set("logger_stdout", "-1")
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self.set("logger_stdout_level", "0")
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def set_open(self, ssid):
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self.set_defaults()
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self.set("ssid", ssid)
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def set_wpa2_psk(self, ssid, passphrase):
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self.set_defaults()
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self.set("ssid", ssid)
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self.set("wpa_passphrase", passphrase)
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self.set("wpa", "2")
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self.set("wpa_key_mgmt", "WPA-PSK")
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self.set("rsn_pairwise", "CCMP")
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def set_wpa_psk(self, ssid, passphrase):
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self.set_defaults()
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self.set("ssid", ssid)
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self.set("wpa_passphrase", passphrase)
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self.set("wpa", "1")
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self.set("wpa_key_mgmt", "WPA-PSK")
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self.set("wpa_pairwise", "TKIP")
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def set_wpa_psk_mixed(self, ssid, passphrase):
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self.set_defaults()
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self.set("ssid", ssid)
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self.set("wpa_passphrase", passphrase)
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self.set("wpa", "3")
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self.set("wpa_key_mgmt", "WPA-PSK")
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self.set("wpa_pairwise", "TKIP")
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self.set("rsn_pairwise", "CCMP")
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def set_wep(self, ssid, key):
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self.set_defaults()
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self.set("ssid", ssid)
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self.set("wep_key0", key)
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def enable(self):
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if "OK" not in self.request("ENABLE"):
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raise Exception("Failed to enable hostapd interface " + self.ifname)
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def disable(self):
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if "OK" not in self.request("DISABLE"):
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raise Exception("Failed to disable hostapd interface " + self.ifname)
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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.dbg + ": " + ev)
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def wait_event(self, events, timeout):
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if not isinstance(events, list):
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raise Exception("Hostapd.wait_event() called with incorrect events argument type")
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start = os.times()[4]
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while True:
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while self.mon.pending():
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ev = self.mon.recv()
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logger.debug(self.dbg + ": " + 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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now = os.times()[4]
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remaining = start + timeout - now
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if remaining <= 0:
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break
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if not self.mon.pending(timeout=remaining):
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break
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return None
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def wait_sta(self, addr=None, timeout=2):
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ev = self.wait_event(["AP-STA-CONNECT"], timeout=timeout)
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if ev is None:
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raise Exception("AP did not report STA connection")
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if addr and addr not in ev:
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raise Exception("Unexpected STA address in connection event: " + ev)
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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_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 get_config(self):
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res = self.request("GET_CONFIG")
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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 mgmt_rx(self, timeout=5):
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ev = self.wait_event(["MGMT-RX"], timeout=timeout)
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if ev is None:
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return None
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msg = {}
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frame = binascii.unhexlify(ev.split(' ')[1])
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msg['frame'] = frame
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hdr = struct.unpack('<HH6B6B6BH', frame[0:24])
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msg['fc'] = hdr[0]
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msg['subtype'] = (hdr[0] >> 4) & 0xf
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hdr = hdr[1:]
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msg['duration'] = hdr[0]
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hdr = hdr[1:]
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msg['da'] = "%02x:%02x:%02x:%02x:%02x:%02x" % hdr[0:6]
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hdr = hdr[6:]
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msg['sa'] = "%02x:%02x:%02x:%02x:%02x:%02x" % hdr[0:6]
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hdr = hdr[6:]
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msg['bssid'] = "%02x:%02x:%02x:%02x:%02x:%02x" % hdr[0:6]
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hdr = hdr[6:]
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msg['seq_ctrl'] = hdr[0]
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msg['payload'] = frame[24:]
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return msg
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def mgmt_tx(self, msg):
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t = (msg['fc'], 0) + mac2tuple(msg['da']) + mac2tuple(msg['sa']) + mac2tuple(msg['bssid']) + (0,)
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hdr = struct.pack('<HH6B6B6BH', *t)
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res = self.request("MGMT_TX " + binascii.hexlify(hdr + msg['payload']).decode())
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if "OK" not in res:
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raise Exception("MGMT_TX command to hostapd failed")
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def get_sta(self, addr, info=None, next=False):
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cmd = "STA-NEXT " if next else "STA "
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if addr is None:
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res = self.request("STA-FIRST")
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elif info:
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res = self.request(cmd + addr + " " + info)
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else:
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res = self.request(cmd + addr)
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lines = res.splitlines()
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vals = dict()
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first = True
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for l in lines:
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if first and '=' not in l:
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vals['addr'] = l
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first = False
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else:
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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_mib(self, param=None):
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if param:
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res = self.request("MIB " + param)
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else:
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res = self.request("MIB")
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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_val = l.split('=', 1)
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if len(name_val) > 1:
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vals[name_val[0]] = name_val[1]
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return vals
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def get_pmksa(self, addr):
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res = self.request("PMKSA")
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lines = res.splitlines()
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for l in lines:
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if addr not in l:
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continue
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vals = dict()
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[index, aa, pmkid, expiration, opportunistic] = l.split(' ')
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vals['index'] = index
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vals['pmkid'] = pmkid
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vals['expiration'] = expiration
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vals['opportunistic'] = opportunistic
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return vals
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return None
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def dpp_qr_code(self, uri):
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res = self.request("DPP_QR_CODE " + uri)
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if "FAIL" in res:
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raise Exception("Failed to parse QR Code URI")
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return int(res)
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def dpp_bootstrap_gen(self, type="qrcode", chan=None, mac=None, info=None,
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curve=None, key=None):
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cmd = "DPP_BOOTSTRAP_GEN type=" + type
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if chan:
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cmd += " chan=" + chan
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if mac:
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if mac is True:
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mac = self.own_addr()
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cmd += " mac=" + mac.replace(':', '')
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if info:
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cmd += " info=" + info
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if curve:
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cmd += " curve=" + curve
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if key:
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cmd += " key=" + key
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res = self.request(cmd)
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if "FAIL" in res:
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raise Exception("Failed to generate bootstrapping info")
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return int(res)
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def dpp_listen(self, freq, netrole=None, qr=None, role=None):
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cmd = "DPP_LISTEN " + str(freq)
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if netrole:
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cmd += " netrole=" + netrole
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if qr:
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cmd += " qr=" + qr
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if role:
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cmd += " role=" + role
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if "OK" not in self.request(cmd):
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raise Exception("Failed to start listen operation")
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def dpp_auth_init(self, peer=None, uri=None, conf=None, configurator=None,
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extra=None, own=None, role=None, neg_freq=None,
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ssid=None, passphrase=None, expect_fail=False):
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cmd = "DPP_AUTH_INIT"
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if peer is None:
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peer = self.dpp_qr_code(uri)
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cmd += " peer=%d" % peer
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if own is not None:
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cmd += " own=%d" % own
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if role:
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cmd += " role=" + role
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if extra:
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cmd += " " + extra
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if conf:
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cmd += " conf=" + conf
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if configurator is not None:
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cmd += " configurator=%d" % configurator
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if neg_freq:
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cmd += " neg_freq=%d" % neg_freq
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if ssid:
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cmd += " ssid=" + binascii.hexlify(ssid.encode()).decode()
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if passphrase:
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cmd += " pass=" + binascii.hexlify(passphrase.encode()).decode()
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res = self.request(cmd)
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if expect_fail:
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if "FAIL" not in res:
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raise Exception("DPP authentication started unexpectedly")
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return
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if "OK" not in res:
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raise Exception("Failed to initiate DPP Authentication")
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def dpp_pkex_init(self, identifier, code, role=None, key=None, curve=None,
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extra=None, use_id=None):
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if use_id is None:
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id1 = self.dpp_bootstrap_gen(type="pkex", key=key, curve=curve)
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else:
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id1 = use_id
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cmd = "own=%d " % id1
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if identifier:
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cmd += "identifier=%s " % identifier
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cmd += "init=1 "
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if role:
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cmd += "role=%s " % role
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if extra:
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cmd += extra + " "
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cmd += "code=%s" % code
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res = self.request("DPP_PKEX_ADD " + cmd)
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if "FAIL" in res:
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raise Exception("Failed to set PKEX data (initiator)")
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return id1
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def dpp_pkex_resp(self, freq, identifier, code, key=None, curve=None,
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listen_role=None):
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id0 = self.dpp_bootstrap_gen(type="pkex", key=key, curve=curve)
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cmd = "own=%d " % id0
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if identifier:
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cmd += "identifier=%s " % identifier
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cmd += "code=%s" % code
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res = self.request("DPP_PKEX_ADD " + cmd)
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if "FAIL" in res:
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raise Exception("Failed to set PKEX data (responder)")
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self.dpp_listen(freq, role=listen_role)
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def dpp_configurator_add(self, curve=None, key=None):
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cmd = "DPP_CONFIGURATOR_ADD"
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if curve:
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cmd += " curve=" + curve
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if key:
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cmd += " key=" + key
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res = self.request(cmd)
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if "FAIL" in res:
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raise Exception("Failed to add configurator")
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return int(res)
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def dpp_configurator_remove(self, conf_id):
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res = self.request("DPP_CONFIGURATOR_REMOVE %d" % conf_id)
|
|
if "OK" not in res:
|
|
raise Exception("DPP_CONFIGURATOR_REMOVE failed")
|
|
|
|
def note(self, txt):
|
|
self.request("NOTE " + txt)
|
|
|
|
def add_ap(apdev, params, wait_enabled=True, no_enable=False, timeout=30,
|
|
global_ctrl_override=None, driver=False):
|
|
if isinstance(apdev, dict):
|
|
ifname = apdev['ifname']
|
|
try:
|
|
hostname = apdev['hostname']
|
|
port = apdev['port']
|
|
logger.info("Starting AP " + hostname + "/" + port + " " + ifname)
|
|
except:
|
|
logger.info("Starting AP " + ifname)
|
|
hostname = None
|
|
port = 8878
|
|
else:
|
|
ifname = apdev
|
|
logger.info("Starting AP " + ifname + " (old add_ap argument type)")
|
|
hostname = None
|
|
port = 8878
|
|
hapd_global = HostapdGlobal(apdev,
|
|
global_ctrl_override=global_ctrl_override)
|
|
hapd_global.remove(ifname)
|
|
hapd_global.add(ifname, driver=driver)
|
|
port = hapd_global.get_ctrl_iface_port(ifname)
|
|
hapd = Hostapd(ifname, hostname=hostname, port=port)
|
|
if not hapd.ping():
|
|
raise Exception("Could not ping hostapd")
|
|
hapd.set_defaults()
|
|
fields = ["ssid", "wpa_passphrase", "nas_identifier", "wpa_key_mgmt",
|
|
"wpa",
|
|
"wpa_pairwise", "rsn_pairwise", "auth_server_addr",
|
|
"acct_server_addr", "osu_server_uri"]
|
|
for field in fields:
|
|
if field in params:
|
|
hapd.set(field, params[field])
|
|
for f, v in list(params.items()):
|
|
if f in fields:
|
|
continue
|
|
if isinstance(v, list):
|
|
for val in v:
|
|
hapd.set(f, val)
|
|
else:
|
|
hapd.set(f, v)
|
|
if no_enable:
|
|
return hapd
|
|
hapd.enable()
|
|
if wait_enabled:
|
|
ev = hapd.wait_event(["AP-ENABLED", "AP-DISABLED"], timeout=timeout)
|
|
if ev is None:
|
|
raise Exception("AP startup timed out")
|
|
if "AP-ENABLED" not in ev:
|
|
raise Exception("AP startup failed")
|
|
return hapd
|
|
|
|
def add_bss(apdev, ifname, confname, ignore_error=False):
|
|
phy = utils.get_phy(apdev)
|
|
try:
|
|
hostname = apdev['hostname']
|
|
port = apdev['port']
|
|
logger.info("Starting BSS " + hostname + "/" + port + " phy=" + phy + " ifname=" + ifname)
|
|
except:
|
|
logger.info("Starting BSS phy=" + phy + " ifname=" + ifname)
|
|
hostname = None
|
|
port = 8878
|
|
hapd_global = HostapdGlobal(apdev)
|
|
hapd_global.add_bss(phy, confname, ignore_error)
|
|
port = hapd_global.get_ctrl_iface_port(ifname)
|
|
hapd = Hostapd(ifname, hostname=hostname, port=port)
|
|
if not hapd.ping():
|
|
raise Exception("Could not ping hostapd")
|
|
return hapd
|
|
|
|
def add_iface(apdev, confname):
|
|
ifname = apdev['ifname']
|
|
try:
|
|
hostname = apdev['hostname']
|
|
port = apdev['port']
|
|
logger.info("Starting interface " + hostname + "/" + port + " " + ifname)
|
|
except:
|
|
logger.info("Starting interface " + ifname)
|
|
hostname = None
|
|
port = 8878
|
|
hapd_global = HostapdGlobal(apdev)
|
|
hapd_global.add_iface(ifname, confname)
|
|
port = hapd_global.get_ctrl_iface_port(ifname)
|
|
hapd = Hostapd(ifname, hostname=hostname, port=port)
|
|
if not hapd.ping():
|
|
raise Exception("Could not ping hostapd")
|
|
return hapd
|
|
|
|
def remove_bss(apdev, ifname=None):
|
|
if ifname == None:
|
|
ifname = apdev['ifname']
|
|
try:
|
|
hostname = apdev['hostname']
|
|
port = apdev['port']
|
|
logger.info("Removing BSS " + hostname + "/" + port + " " + ifname)
|
|
except:
|
|
logger.info("Removing BSS " + ifname)
|
|
hapd_global = HostapdGlobal(apdev)
|
|
hapd_global.remove(ifname)
|
|
|
|
def terminate(apdev):
|
|
try:
|
|
hostname = apdev['hostname']
|
|
port = apdev['port']
|
|
logger.info("Terminating hostapd " + hostname + "/" + port)
|
|
except:
|
|
logger.info("Terminating hostapd")
|
|
hapd_global = HostapdGlobal(apdev)
|
|
hapd_global.terminate()
|
|
|
|
def wpa2_params(ssid=None, passphrase=None):
|
|
params = {"wpa": "2",
|
|
"wpa_key_mgmt": "WPA-PSK",
|
|
"rsn_pairwise": "CCMP"}
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
if passphrase:
|
|
params["wpa_passphrase"] = passphrase
|
|
return params
|
|
|
|
def wpa_params(ssid=None, passphrase=None):
|
|
params = {"wpa": "1",
|
|
"wpa_key_mgmt": "WPA-PSK",
|
|
"wpa_pairwise": "TKIP"}
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
if passphrase:
|
|
params["wpa_passphrase"] = passphrase
|
|
return params
|
|
|
|
def wpa_mixed_params(ssid=None, passphrase=None):
|
|
params = {"wpa": "3",
|
|
"wpa_key_mgmt": "WPA-PSK",
|
|
"wpa_pairwise": "TKIP",
|
|
"rsn_pairwise": "CCMP"}
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
if passphrase:
|
|
params["wpa_passphrase"] = passphrase
|
|
return params
|
|
|
|
def radius_params():
|
|
params = {"auth_server_addr": "127.0.0.1",
|
|
"auth_server_port": "1812",
|
|
"auth_server_shared_secret": "radius",
|
|
"nas_identifier": "nas.w1.fi"}
|
|
return params
|
|
|
|
def wpa_eap_params(ssid=None):
|
|
params = radius_params()
|
|
params["wpa"] = "1"
|
|
params["wpa_key_mgmt"] = "WPA-EAP"
|
|
params["wpa_pairwise"] = "TKIP"
|
|
params["ieee8021x"] = "1"
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
return params
|
|
|
|
def wpa2_eap_params(ssid=None):
|
|
params = radius_params()
|
|
params["wpa"] = "2"
|
|
params["wpa_key_mgmt"] = "WPA-EAP"
|
|
params["rsn_pairwise"] = "CCMP"
|
|
params["ieee8021x"] = "1"
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
return params
|
|
|
|
def b_only_params(channel="1", ssid=None, country=None):
|
|
params = {"hw_mode": "b",
|
|
"channel": channel}
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
if country:
|
|
params["country_code"] = country
|
|
return params
|
|
|
|
def g_only_params(channel="1", ssid=None, country=None):
|
|
params = {"hw_mode": "g",
|
|
"channel": channel}
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
if country:
|
|
params["country_code"] = country
|
|
return params
|
|
|
|
def a_only_params(channel="36", ssid=None, country=None):
|
|
params = {"hw_mode": "a",
|
|
"channel": channel}
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
if country:
|
|
params["country_code"] = country
|
|
return params
|
|
|
|
def ht20_params(channel="1", ssid=None, country=None):
|
|
params = {"ieee80211n": "1",
|
|
"channel": channel,
|
|
"hw_mode": "g"}
|
|
if int(channel) > 14:
|
|
params["hw_mode"] = "a"
|
|
if ssid:
|
|
params["ssid"] = ssid
|
|
if country:
|
|
params["country_code"] = country
|
|
return params
|
|
|
|
def ht40_plus_params(channel="1", ssid=None, country=None):
|
|
params = ht20_params(channel, ssid, country)
|
|
params['ht_capab'] = "[HT40+]"
|
|
return params
|
|
|
|
def ht40_minus_params(channel="1", ssid=None, country=None):
|
|
params = ht20_params(channel, ssid, country)
|
|
params['ht_capab'] = "[HT40-]"
|
|
return params
|
|
|
|
def cmd_execute(apdev, cmd, shell=False):
|
|
hapd_global = HostapdGlobal(apdev)
|
|
return hapd_global.cmd_execute(cmd, shell=shell)
|