def find_locks(radio, panid=None):
result = []
trackers = dict()
last_sequence_number = dict()
if panid is not None:
print_notify("Looking at PAN ID 0x%04x for lights" % panid)
else:
print_notify("Looking for lights on the current channel")
print_info("Monitoring the network for an extended period")
timer = Timer(17)
traffic_counter = 0
while not timer.has_expired():
frame = radio.receive()
if frame is not None and not is_beacon_request(frame):
traffic_counter += 1
if is_data_request(frame) and (panid is None
or get_pan_id(frame) == panid):
pan = get_pan_id(frame)
source = get_source(frame)
if not pan in trackers.keys():
trackers[pan] = dict()
last_sequence_number[pan] = dict()
if not source in trackers[pan].keys():
trackers[pan][source] = TrackWatch()
last_sequence_number[pan][source] = -1
if last_sequence_number[pan][source] != frame[Dot15d4FCS].seqnum:
trackers[pan][source].click()
last_sequence_number[pan][source] = frame[Dot15d4FCS].seqnum
if timer.time_passed() > 5 and traffic_counter == 0:
print_info("No traffic observed for 5 seconds, giving up")
break
for pan in trackers:
for addr in trackers[pan]:
watch = trackers[pan][addr]
if watch.variance() is not None and watch.variance(
) < THRESHOLD_VARIANCE and watch.mean() > MIN_FREQUENCY:
result.append((pan, addr))
print_notify("Device 0x%04x on PAN 0x%04x resembles a lock" %
(addr, pan))
print_debug(
"Device 0x%04x on PAN 0x%04x had variance of %f and mean of %f"
% (addr, pan, watch.variance(), watch.mean()))
return result
def findLights(self, channel):
self.radio.set_channel(channel)
print_notify("Sending beacon on on channel %d" %
self.radio.get_channel())
result = []
trackers = dict()
last_sequence_number = dict()
print_notify("Looking for lights on the current channel")
print_info("Monitoring the network for an extended period")
timer = Timer(17)
traffic_counter = 0
while not timer.has_expired():
frame = self.radio.receive()
if frame is not None and not is_beacon_request(frame):
traffic_counter += 1
if is_data_frame(frame):
pan = get_pan_id(frame)
source = get_source(frame)
if not pan in trackers.keys():
trackers[pan] = dict()
last_sequence_number[pan] = dict()
if not source in trackers[pan].keys():
trackers[pan][source] = TrackWatch()
last_sequence_number[pan][source] = -1
if last_sequence_number[pan][source] != frame[
Dot15d4FCS].seqnum:
trackers[pan][source].click()
last_sequence_number[pan][source] = frame[
Dot15d4FCS].seqnum
if timer.time_passed() > 15 and traffic_counter == 0:
print_info("No traffic observed for 15 seconds, giving up")
break
# print(trackers.keys())
# print(last_sequence_number)
gateways = dict()
for pan in trackers:
min_var = 0
gateway = None
for addr in trackers[pan]:
watch = trackers[pan][addr]
if watch.variance() is not None and abs(watch.variance(
) - watch.mean()) > min_var or gateway is None:
min_var = watch.variance()
gateway = addr
result.append((pan, addr))
print_debug(
"Device 0x%04x on PAN 0x%04x had variance of %f and mean of %f"
% (addr, pan, watch.variance(), watch.mean()))
gateways[pan] = gateway
print_notify(
"Device 0x%04x on PAN 0x%04x possibly resembles a gateway" %
(gateway, pan))
result = dict()
result[pan] = dict()
result[pan]['devices'] = list(trackers[pan].keys())
result[pan]['last_sequence_number'] = last_sequence_number[pan]
result[pan]['coordinator'] = gateways[pan]
# print(result)
return result
