344 lines
10 KiB
Python
344 lines
10 KiB
Python
# Python class for controlling hostapd
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# Copyright (c) 2013-2014, 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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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):
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self.ctrl = wpaspy.Ctrl(hapd_global)
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def add(self, ifname):
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res = self.ctrl.request("ADD " + ifname + " " + hapd_ctrl)
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if not "OK" 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.ctrl.request("ADD " + ifname + " config=" + confname)
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if not "OK" 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.ctrl.request("ADD bss_config=" + phy + ":" + confname)
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if not "OK" 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.ctrl.request("REMOVE " + ifname, timeout=30)
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def relog(self):
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self.ctrl.request("RELOG")
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def flush(self):
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self.ctrl.request("FLUSH")
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class Hostapd:
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def __init__(self, ifname):
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self.ifname = ifname
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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.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 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 not "OK" 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 not "OK" 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 not "OK" 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.ifname + ": " + ev)
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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.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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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 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 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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self.request("MGMT_TX " + binascii.hexlify(hdr + msg['payload']))
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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:
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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 add_ap(ifname, params, wait_enabled=True):
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logger.info("Starting AP " + ifname)
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hapd_global = HostapdGlobal()
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hapd_global.remove(ifname)
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hapd_global.add(ifname)
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hapd = Hostapd(ifname)
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if not hapd.ping():
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raise Exception("Could not ping hostapd")
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hapd.set_defaults()
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fields = [ "ssid", "wpa_passphrase", "nas_identifier", "wpa_key_mgmt",
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"wpa",
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"wpa_pairwise", "rsn_pairwise", "auth_server_addr",
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"acct_server_addr", "osu_server_uri" ]
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for field in fields:
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if field in params:
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hapd.set(field, params[field])
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for f,v in params.items():
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if f in fields:
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continue
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if isinstance(v, list):
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for val in v:
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hapd.set(f, val)
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else:
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hapd.set(f, v)
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hapd.enable()
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if wait_enabled:
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ev = hapd.wait_event(["AP-ENABLED", "AP-DISABLED"], timeout=30)
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if ev is None:
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raise Exception("AP startup timed out")
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if "AP-ENABLED" not in ev:
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raise Exception("AP startup failed")
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return hapd
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def add_bss(phy, ifname, confname, ignore_error=False):
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logger.info("Starting BSS phy=" + phy + " ifname=" + ifname)
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hapd_global = HostapdGlobal()
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hapd_global.add_bss(phy, confname, ignore_error)
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hapd = Hostapd(ifname)
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if not hapd.ping():
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raise Exception("Could not ping hostapd")
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def add_iface(ifname, confname):
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logger.info("Starting interface " + ifname)
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hapd_global = HostapdGlobal()
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hapd_global.add_iface(ifname, confname)
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hapd = Hostapd(ifname)
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if not hapd.ping():
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raise Exception("Could not ping hostapd")
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def remove_bss(ifname):
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logger.info("Removing BSS " + ifname)
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hapd_global = HostapdGlobal()
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hapd_global.remove(ifname)
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def wpa2_params(ssid=None, passphrase=None):
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params = { "wpa": "2",
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"wpa_key_mgmt": "WPA-PSK",
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"rsn_pairwise": "CCMP" }
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if ssid:
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params["ssid"] = ssid
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if passphrase:
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params["wpa_passphrase"] = passphrase
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return params
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def wpa_params(ssid=None, passphrase=None):
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params = { "wpa": "1",
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"wpa_key_mgmt": "WPA-PSK",
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"wpa_pairwise": "TKIP" }
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if ssid:
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params["ssid"] = ssid
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if passphrase:
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params["wpa_passphrase"] = passphrase
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return params
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def wpa_mixed_params(ssid=None, passphrase=None):
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params = { "wpa": "3",
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"wpa_key_mgmt": "WPA-PSK",
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"wpa_pairwise": "TKIP",
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"rsn_pairwise": "CCMP" }
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if ssid:
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params["ssid"] = ssid
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if passphrase:
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params["wpa_passphrase"] = passphrase
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return params
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def radius_params():
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params = { "auth_server_addr": "127.0.0.1",
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"auth_server_port": "1812",
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"auth_server_shared_secret": "radius",
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"nas_identifier": "nas.w1.fi" }
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return params
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def wpa_eap_params(ssid=None):
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params = radius_params()
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params["wpa"] = "1"
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params["wpa_key_mgmt"] = "WPA-EAP"
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params["wpa_pairwise"] = "TKIP"
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params["ieee8021x"] = "1"
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if ssid:
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params["ssid"] = ssid
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return params
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def wpa2_eap_params(ssid=None):
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params = radius_params()
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params["wpa"] = "2"
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params["wpa_key_mgmt"] = "WPA-EAP"
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params["rsn_pairwise"] = "CCMP"
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params["ieee8021x"] = "1"
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if ssid:
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params["ssid"] = ssid
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return params
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