# Python class for controlling hostapd # Copyright (c) 2013-2014, Jouni Malinen # # This software may be distributed under the terms of the BSD license. # See README for more details. import os import time import logging import binascii import struct import wpaspy logger = logging.getLogger() hapd_ctrl = '/var/run/hostapd' hapd_global = '/var/run/hostapd-global' def mac2tuple(mac): return struct.unpack('6B', binascii.unhexlify(mac.replace(':',''))) class HostapdGlobal: def __init__(self): self.ctrl = wpaspy.Ctrl(hapd_global) self.mon = wpaspy.Ctrl(hapd_global) self.mon.attach() def request(self, cmd): return self.ctrl.request(cmd) def wait_event(self, events, timeout): start = os.times()[4] while True: while self.mon.pending(): ev = self.mon.recv() logger.debug("(global): " + ev) for event in events: if event in ev: return ev now = os.times()[4] remaining = start + timeout - now if remaining <= 0: break if not self.mon.pending(timeout=remaining): break return None def request(self, cmd): return self.ctrl.request(cmd) def add(self, ifname): res = self.ctrl.request("ADD " + ifname + " " + hapd_ctrl) if not "OK" in res: raise Exception("Could not add hostapd interface " + ifname) def add_iface(self, ifname, confname): res = self.ctrl.request("ADD " + ifname + " config=" + confname) if not "OK" in res: raise Exception("Could not add hostapd interface") def add_bss(self, phy, confname, ignore_error=False): res = self.ctrl.request("ADD bss_config=" + phy + ":" + confname) if not "OK" in res: if not ignore_error: raise Exception("Could not add hostapd BSS") def remove(self, ifname): self.ctrl.request("REMOVE " + ifname, timeout=30) def relog(self): self.ctrl.request("RELOG") def flush(self): self.ctrl.request("FLUSH") class Hostapd: def __init__(self, ifname, bssidx=0): self.ifname = ifname self.ctrl = wpaspy.Ctrl(os.path.join(hapd_ctrl, ifname)) self.mon = wpaspy.Ctrl(os.path.join(hapd_ctrl, ifname)) self.mon.attach() self.bssid = None self.bssidx = bssidx def own_addr(self): if self.bssid is None: self.bssid = self.get_status_field('bssid[%d]' % self.bssidx) return self.bssid def request(self, cmd): logger.debug(self.ifname + ": CTRL: " + cmd) return self.ctrl.request(cmd) def ping(self): return "PONG" in self.request("PING") def set(self, field, value): if not "OK" in self.request("SET " + field + " " + value): raise Exception("Failed to set hostapd parameter " + field) def set_defaults(self): self.set("driver", "nl80211") self.set("hw_mode", "g") self.set("channel", "1") self.set("ieee80211n", "1") self.set("logger_stdout", "-1") self.set("logger_stdout_level", "0") def set_open(self, ssid): self.set_defaults() self.set("ssid", ssid) def set_wpa2_psk(self, ssid, passphrase): self.set_defaults() self.set("ssid", ssid) self.set("wpa_passphrase", passphrase) self.set("wpa", "2") self.set("wpa_key_mgmt", "WPA-PSK") self.set("rsn_pairwise", "CCMP") def set_wpa_psk(self, ssid, passphrase): self.set_defaults() self.set("ssid", ssid) self.set("wpa_passphrase", passphrase) self.set("wpa", "1") self.set("wpa_key_mgmt", "WPA-PSK") self.set("wpa_pairwise", "TKIP") def set_wpa_psk_mixed(self, ssid, passphrase): self.set_defaults() self.set("ssid", ssid) self.set("wpa_passphrase", passphrase) self.set("wpa", "3") self.set("wpa_key_mgmt", "WPA-PSK") self.set("wpa_pairwise", "TKIP") self.set("rsn_pairwise", "CCMP") def set_wep(self, ssid, key): self.set_defaults() self.set("ssid", ssid) self.set("wep_key0", key) def enable(self): if not "OK" in self.request("ENABLE"): raise Exception("Failed to enable hostapd interface " + self.ifname) def disable(self): if not "OK" in self.request("DISABLE"): raise Exception("Failed to disable hostapd interface " + self.ifname) def dump_monitor(self): while self.mon.pending(): ev = self.mon.recv() logger.debug(self.ifname + ": " + ev) def wait_event(self, events, timeout): start = os.times()[4] while True: while self.mon.pending(): ev = self.mon.recv() logger.debug(self.ifname + ": " + ev) for event in events: if event in ev: return ev now = os.times()[4] remaining = start + timeout - now if remaining <= 0: break if not self.mon.pending(timeout=remaining): break return None def get_status(self): res = self.request("STATUS") lines = res.splitlines() vals = dict() for l in lines: [name,value] = l.split('=', 1) vals[name] = value return vals def get_status_field(self, field): vals = self.get_status() if field in vals: return vals[field] return None def get_driver_status(self): res = self.request("STATUS-DRIVER") lines = res.splitlines() vals = dict() for l in lines: [name,value] = l.split('=', 1) vals[name] = value return vals def get_driver_status_field(self, field): vals = self.get_driver_status() if field in vals: return vals[field] return None def get_config(self): res = self.request("GET_CONFIG") lines = res.splitlines() vals = dict() for l in lines: [name,value] = l.split('=', 1) vals[name] = value return vals def mgmt_rx(self, timeout=5): ev = self.wait_event(["MGMT-RX"], timeout=timeout) if ev is None: return None msg = {} frame = binascii.unhexlify(ev.split(' ')[1]) msg['frame'] = frame hdr = struct.unpack('> 4) & 0xf hdr = hdr[1:] msg['duration'] = hdr[0] hdr = hdr[1:] msg['da'] = "%02x:%02x:%02x:%02x:%02x:%02x" % hdr[0:6] hdr = hdr[6:] msg['sa'] = "%02x:%02x:%02x:%02x:%02x:%02x" % hdr[0:6] hdr = hdr[6:] msg['bssid'] = "%02x:%02x:%02x:%02x:%02x:%02x" % hdr[0:6] hdr = hdr[6:] msg['seq_ctrl'] = hdr[0] msg['payload'] = frame[24:] return msg def mgmt_tx(self, msg): t = (msg['fc'], 0) + mac2tuple(msg['da']) + mac2tuple(msg['sa']) + mac2tuple(msg['bssid']) + (0,) hdr = struct.pack(' 1: vals[name_val[0]] = name_val[1] return vals def add_ap(ifname, params, wait_enabled=True, no_enable=False): logger.info("Starting AP " + ifname) hapd_global = HostapdGlobal() hapd_global.remove(ifname) hapd_global.add(ifname) hapd = Hostapd(ifname) 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 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=30) 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(phy, ifname, confname, ignore_error=False): logger.info("Starting BSS phy=" + phy + " ifname=" + ifname) hapd_global = HostapdGlobal() hapd_global.add_bss(phy, confname, ignore_error) hapd = Hostapd(ifname) if not hapd.ping(): raise Exception("Could not ping hostapd") def add_iface(ifname, confname): logger.info("Starting interface " + ifname) hapd_global = HostapdGlobal() hapd_global.add_iface(ifname, confname) hapd = Hostapd(ifname) if not hapd.ping(): raise Exception("Could not ping hostapd") def remove_bss(ifname): logger.info("Removing BSS " + ifname) hapd_global = HostapdGlobal() hapd_global.remove(ifname) 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