def pairing(self, sta, wlan, stationList):
"""Pairing nodes"""
i=1
ref_distance = 0
self.dist = 0
alreadyConn = []
for ref_sta in stationList:
if ref_sta != sta:
dist = channelParameters.getDistance(sta, ref_sta)
if dist != 0.0:
totalRange = int(sta.params['range']) + int(ref_sta.params['range'])
if dist < totalRange:
ref_distance = ref_distance + dist
ssid = sta.params['associatedTo'][wlan]
ref_ssid = ref_sta.params['associatedTo'][wlan]
i+=1
sta.params['frequency'][wlan] = channelParameters.frequency(sta, wlan)
if sta.ssid[wlan] == ref_sta.ssid[wlan]:
if sta.params['cell'][wlan] == '':
alreadyConn.append(sta)
sta.params['associatedTo'][wlan] = sta.ssid[wlan]
sta.params['cell'][wlan] = ('02:CA:FF:EE:BA:0%s' % self.ssid_ID)
iface = sta.params['wlan'][wlan]
print "associating %s to %s..." % (iface, sta.ssid[wlan])
sta.pexec('iwconfig %s essid %s ap 02:CA:FF:EE:BA:0%s' % (sta.params['wlan'][wlan], sta.params['associatedTo'][wlan], self.ssid_ID))
#sta.pexec('iw dev %s ibss join %s 2412' % (sta.params['wlan'][wlan], \
# sta.params['associatedTo'][wlan]))
sta.params['frequency'][wlan] = channelParameters.frequency(sta, wlan)
if sta.params['cell'][wlan] != ref_sta.params['cell'][wlan]:
if ref_sta.params['associatedTo'][wlan] == sta.ssid[wlan]:
if ref_sta.params['cell'][wlan] == '' and sta in alreadyConn:
alreadyConn.append(ref_sta)
iface = ref_sta.params['wlan'][wlan]
ref_sta.params['associatedTo'][wlan] = sta.ssid[wlan]
ref_sta.params['cell'][wlan] = ('02:CA:FF:EE:BA:0%s' % self.ssid_ID)
print "associating %s to %s..." % (iface, sta.ssid[wlan])
ref_sta.pexec('iwconfig %s essid %s ap 02:CA:FF:EE:BA:0%s' % (ref_sta.params['wlan'][wlan], ref_sta.params['associatedTo'][wlan], self.ssid_ID))
#ref_sta.pexec('iw dev %s ibss join %s 2412' % (ref_sta.params['wlan'][wlan], \
# ref_sta.params['associatedTo'][wlan]))
ref_sta.params['frequency'][wlan] = channelParameters.frequency(ref_sta, wlan)
if alreadyConn != [] and len(alreadyConn) != 1:
for ref_sta in stationList:
if ref_sta not in alreadyConn:
if ref_sta.params['cell'][wlan] == sta.params['cell'][wlan]:
ref_sta.params['cell'][wlan] = ''
self.ssid_ID+=1
self.dist = ref_distance / i
return self.dist
#def confirmAdhocAssociation(self, sta, iface, wlan):
# associated = ''
# while(associated == '' or len(associated) == 0):
# sta.sendCmd("iw dev %s scan ssid | grep %s" % (iface, sta.ssid[wlan]))
# associated = sta.waitOutput()
# sta.params['frequency'][wlan] = channelParameters.frequency(sta, wlan)
def rssi(self):
if mobility.DRAW:
instantiateGraph()
currentTime = time.time()
staList = mobility.staList
ang = {}
for sta in staList:
ang[sta] = random.uniform(0, 360)
sta.params['frequency'][0] = channelParameters.frequency(sta, 0)
continue_ = True
while continue_:
continue_ = False
time_ = time.time() - currentTime
for sta in staList:
continue_ = True
if time_ >= sta.time[0]:
freq = sta.params['frequency'][0] * 1000 # freqency in MHz
ap = sta.params['associatedTo'][0] # get AP
dist = self.calculateDistance(sta, freq, sta.rssi[0])
if ap != '':
self.moveStationTo(sta, ap, dist, ang[sta])
bw = self.calculateRate(sta, ap, dist)
channelParameters.tc(sta, 0, bw, 1, 1, 1)
sta.params['rssi'] = sta.rssi[0]
del sta.rssi[0]
del sta.time[0]
if len(sta.time) == 0:
staList.remove(sta)
time.sleep(0.01)
def rssi(self):
if mobility.DRAW:
instantiateGraph()
currentTime = time.time()
staList = mobility.staList
ang = {}
for sta in staList:
ang[sta] = random.uniform(0, 360)
sta.params['frequency'][0] = channelParameters.frequency(sta, 0)
continue_ = True
while continue_:
continue_ = False
time_ = time.time() - currentTime
for sta in staList:
continue_ = True
if time_ >= sta.time[0]:
freq = sta.params['frequency'][0] * 1000 # freqency in MHz
ap = sta.params['associatedTo'][0] # get AP
dist = self.calculateDistance(sta, freq, sta.rssi[0])
if ap != '':
self.moveStationTo(sta, ap, dist, ang[sta])
bw = self.calculateRate(sta, ap, dist)
channelParameters.tc(sta, 0, bw, 1, 1, 1)
sta.params['rssi'] = sta.rssi[0]
del sta.rssi[0]
del sta.time[0]
if len(sta.time) == 0:
staList.remove(sta)
time.sleep(0.01)
def behavior(self):
info('\nReplaying process starting in 20 seconds')
time.sleep(20)
info('\nReplaying process has been started')
currentTime = time.time()
staList = mobility.staList
for sta in staList:
sta.params['frequency'][0] = channelParameters.frequency(sta, 0)
continue_ = True
while continue_:
continue_ = False
time_ = time.time() - currentTime
for sta in staList:
if hasattr(sta, 'time'):
continue_ = True
if time_ >= sta.time[0]:
ap = sta.params['associatedTo'][0] # get AP
if ap != '':
bw = sta.bw[0]
loss = sta.loss[0]
delay = sta.delay[0]
latency = sta.latency[0]
channelParameters.tc(sta, 0, bw, loss, latency, delay)
del sta.bw[0]
del sta.loss[0]
del sta.delay[0]
del sta.latency[0]
del sta.time[0]
if len(sta.time) == 0:
staList.remove(sta)
time.sleep(0.01)
info('Replaying process has finished!')
def handover(self, sta, ap, wlan, distance, changeAP, ac=None):
"""handover"""
if ac == 'llf' or ac == 'ssf' and sta.params['associatedTo'][
wlan] != ap:
if sta.params['associatedTo'][wlan] != '':
sta.params['associatedTo'][wlan].associatedStations.remove(sta)
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
debug(
'\niwconfig %s essid %s ap %s' %
(sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac'][wlan]))
sta.pexec(
'iwconfig %s essid %s ap %s' %
(sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac'][wlan]))
sta.params['associatedTo'][wlan] = ap
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
ap.associatedStations.append(sta)
elif ap not in sta.params['associatedTo']:
# Useful for stations with more than one wifi iface
if sta.params['associatedTo'][wlan] == '':
if sta.encrypt == '':
debug('\niwconfig %s essid %s ap %s' %
(sta.params['wlan'][wlan], ap.ssid[0],
ap.params['mac'][wlan]))
sta.pexec('iwconfig %s essid %s ap %s' %
(sta.params['wlan'][wlan], ap.ssid[0],
ap.params['mac'][wlan]))
elif sta.encrypt == 'wpa' or sta.encrypt == 'wpa2':
os.system(
'pkill -f \'wpa_supplicant -B -Dnl80211 -i %s-wlan%s\''
% (sta, wlan))
debug("\nwpa_supplicant -B -Dnl80211 -i %s-wlan%s -c <(wpa_passphrase \"%s\" \"%s\")\n" \
% (sta, wlan, ap.ssid[0], sta.passwd))
sta.cmd("wpa_supplicant -B -Dnl80211 -i %s-wlan%s -c <(wpa_passphrase \"%s\" \"%s\")" \
% (sta, wlan, ap.ssid[0], sta.passwd))
elif sta.encrypt == 'wep':
debug('iw dev %s-wlan%s connect %s key 0:%s' \
% (sta, wlan, ap.ssid[0], sta.passwd))
sta.cmd('iw dev %s-wlan%s connect %s key 0:%s' \
% (sta, wlan, ap.ssid[0], sta.passwd))
sta.params['frequency'][wlan] = channelParameters.frequency(
ap, 0)
ap.associatedStations.append(sta)
sta.params['associatedTo'][wlan] = ap
def handover(self, sta, ap, wlan, distance, changeAP, ac=None):
"""handover"""
if ac == 'llf' or ac == 'ssf' and sta.params['associatedTo'][wlan] != ap:
if sta.params['associatedTo'][wlan] != '':
sta.params['associatedTo'][wlan].associatedStations.remove(sta)
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
debug ('\niwconfig %s essid %s ap %s' % (sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac']))
sta.pexec('iwconfig %s essid %s ap %s' % (sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac']))
sta.params['associatedTo'][wlan] = ap
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
ap.associatedStations.append(sta)
elif ap not in sta.params['associatedTo']:
# Useful for stations with more than one wifi iface
if sta.params['associatedTo'][wlan] == '':
debug('\niwconfig %s essid %s ap %s' % (sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac']))
sta.pexec('iwconfig %s essid %s ap %s' % (sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac']))
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
ap.associatedStations.append(sta)
sta.params['associatedTo'][wlan] = ap
def handover(self, sta, ap, wlan, distance, changeAP, ac=None):
"""handover"""
if ac == 'llf' or ac == 'ssf' and sta.params['associatedTo'][wlan] != ap:
if sta.params['associatedTo'][wlan] != '':
sta.params['associatedTo'][wlan].associatedStations.remove(sta)
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
debug ('\niwconfig %s essid %s ap %s' % (sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac']))
sta.pexec('iwconfig %s essid %s ap %s' % (sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac']))
sta.params['associatedTo'][wlan] = ap
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
ap.associatedStations.append(sta)
elif ap not in sta.params['associatedTo']:
# Useful for stations with more than one wifi iface
if sta.params['associatedTo'][wlan] == '':
debug('\niwconfig %s essid %s ap %s' % (sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac']))
sta.pexec('iwconfig %s essid %s ap %s' % (sta.params['wlan'][wlan], ap.ssid[0], ap.params['mac']))
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
ap.associatedStations.append(sta)
sta.params['associatedTo'][wlan] = ap
def rssi(self, propagationModel='', n=0):
if mobility.DRAW:
instantiateGraph()
currentTime = time.time()
staList = mobility.staList
ang = {}
for sta in staList:
ang[sta] = random.uniform(0, 360)
sta.params['frequency'][0] = channelParameters.frequency(sta, 0)
continue_ = True
while continue_:
continue_ = False
time_ = time.time() - currentTime
for sta in staList:
if hasattr(sta, 'time'):
continue_ = True
if time_ >= sta.time[0]:
ap = sta.params['associatedTo'][0] # get AP
sta.params['rssi'][0] = sta.rssi[0]
if ap != '':
dist = self.calculateDistance(sta, ap, sta.rssi[0], propagationModel, n)
self.moveStationTo(sta, ap, dist, ang[sta])
loss = channelParameters.loss(dist)
latency = channelParameters.latency(dist)
delay = channelParameters.delay(dist, 0)
bw = channelParameters.bw(sta, ap, dist, 0, isReplay=True)
if self.print_bw or self.print_delay or self.print_distance or \
self.print_latency or self.print_loss:
info('station %s:\n' % sta)
if self.print_distance:
info(' distance(m) to %s: %s\n' % (ap, dist))
if self.print_loss:
info(' loss: %s\n' % loss)
if self.print_latency:
info(' latency(ms): %s\n' % latency)
if self.print_delay:
info(' delay(ms): %s\n' % delay)
if self.print_bw:
info(' bandwidth(Mbps): %s\n' % bw)
channelParameters.tc(sta, 0, bw, loss, latency, delay)
del sta.rssi[0]
del sta.time[0]
if len(sta.time) == 0:
staList.remove(sta)
time.sleep(0.01)
def setChannelParameters(self, sta, ap, dist, wlan):
""" Wifi Parameters """
associated = True
#time = abs(sta.params['speed'])
staList = self.staList
if ap == sta.params['associatedTo'][wlan]:
if dist > ap.range:
debug('\niw dev %s disconnect' % sta.params['wlan'][wlan])
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.params['associatedTo'][wlan] = ''
sta.params['rssi'][wlan] = 0
sta.params['snr'][wlan] = 0
ap.associatedStations.remove(sta)
else:
channelParameters(sta, ap, wlan, dist, staList, 0)
else:
if dist < ap.range:
if sta.params['associatedTo'][wlan] == '':
associated = False
else:
associated = False
if ap == sta.params['associatedTo'][wlan] or dist < ap.range:
changeAP = False
ac = None
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
sta.params['channel'][wlan] = ap.params['channel'][0]
"""Association Control: mechanisms that optimize the use of the APs"""
if self.associationControlMethod != False:
ac = self.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
#Go to handover
if associated == False or changeAP == True:
self.handover(sta, ap, wlan, dist, changeAP, ac)
channelParameters(sta, ap, wlan, dist, staList, 0)
else:
#have to verify this
time.sleep(0.01)
def setChannelParameters(self, sta, ap, dist, wlan):
""" Wifi Parameters """
associated = True
#time = abs(sta.params['speed'])
staList = self.staList
if ap == sta.params['associatedTo'][wlan]:
if dist > ap.params['range']:
debug('\niw dev %s disconnect' % sta.params['wlan'][wlan])
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.params['associatedTo'][wlan] = ''
sta.params['rssi'][wlan] = 0
sta.params['snr'][wlan] = 0
ap.associatedStations.remove(sta)
else:
channelParameters(sta, ap, wlan, dist, staList, 0)
else:
if dist < ap.params['range']:
if sta.params['associatedTo'][wlan] == '':
associated = False
else:
associated = False
if ap == sta.params['associatedTo'][wlan] or dist < ap.params['range']:
changeAP = False
ac = None
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
sta.params['channel'][wlan] = ap.params['channel'][0]
"""Association Control: mechanisms that optimize the use of the APs"""
if self.associationControlMethod != False:
ac = self.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
#Go to handover
if associated == False or changeAP == True:
self.handover(sta, ap, wlan, dist, changeAP, ac)
channelParameters(sta, ap, wlan, dist, staList, 0)
else:
#have to verify this
time.sleep(0.01)
def rssi(self):
if mobility.DRAW:
instantiateGraph()
currentTime = time.time()
staList = mobility.staList
ang = {}
for sta in staList:
ang[sta] = random.uniform(0, 360)
sta.params['frequency'][0] = channelParameters.frequency(sta, 0)
continue_ = True
while continue_:
continue_ = False
time_ = time.time() - currentTime
for sta in staList:
if hasattr(sta, 'time'):
continue_ = True
if time_ >= sta.time[0]:
ap = sta.params['associatedTo'][0] # get AP
sta.params['rssi'][0] = sta.rssi[0]
if ap != '':
dist = self.calculateDistance(sta, ap, sta.rssi[0])
self.moveStationTo(sta, ap, dist, ang[sta])
loss = channelParameters.loss(dist)
latency = channelParameters.latency(dist)
delay = channelParameters.delay(dist, 0)
bw = channelParameters.bw(sta,
ap,
dist,
0,
isReplay=True)
channelParameters.tc(sta, 0, bw, loss, latency,
delay)
del sta.rssi[0]
del sta.time[0]
if len(sta.time) == 0:
staList.remove(sta)
time.sleep(0.01)
def confirmMeshAssociation(self, sta, wlan):
sta.params['frequency'][wlan] = channelParameters.frequency(sta, wlan)
def confirmAdhocAssociation(self, sta, iface, wlan):
associated = ''
while(associated == '' or len(associated) == 0):
sta.sendCmd("iw dev %s scan ssid | grep %s" % (iface, sta.ssid[wlan]))
associated = sta.waitOutput()
sta.params['frequency'][wlan] = channelParameters.frequency(sta, wlan)
def confirmAdhocAssociation(self, sta, iface, wlan):
associated = ''
while(associated == '' or len(associated) == 0):
sta.sendCmd("iw dev %s scan ssid | grep %s" % (iface, sta.ssid[wlan]))
associated = sta.waitOutput()
sta.params['frequency'][wlan] = channelParameters.frequency(sta, wlan)
