def onReadRequest(self, offset, callback):
if not offset:
Logger.info(LOCATION,
'Device Info being read by connected device.')
total_memory = virtual_memory()
endian = sys.byteorder
sysData = {
'platform': platform.system(),
'release': platform.release(),
'type': platform.uname().system,
'arch': platform.uname().machine,
'cpus': json.dumps(os.cpu_count()),
'hostname': socket.gethostname(),
'totalMemory': total_memory.total
}
# Mapping endian value to match with node sdk
if endian == 'little':
sysData['endianness'] = 'LE'
else:
sysData['endianness'] = 'BE'
self.deviceInfoData.extend(map(ord, json.dumps(sysData)))
#Return the necessary data through the call back
callback(Characteristic.RESULT_SUCCESS, self.deviceInfoData[offset:])
def onReadRequest(self, offset, callback):
if not offset:
Logger.info(LOCATION,
'Device Network info being read by connected device.')
interfaces = netifaces.interfaces()
address = ''
interface_name = ''
for iface in interfaces:
addrs = netifaces.ifaddresses(iface)
# Skip local address
if not iface.startswith('lo'):
try:
# Filter only ipv4 address
ipv4_address_list = addrs[netifaces.AF_INET]
for ipv4 in ipv4_address_list:
address = ipv4['addr']
interface_name = iface
except Exception as exception:
# Filter only ipv4 address
pass
data = {'network': address, 'ip': interface_name}
self.networkData.extend(map(ord, json.dumps(data)))
#Return the necessary network related data through the callback
callback(Characteristic.RESULT_SUCCESS, self.networkData[offset:])
def get_actions(self):
Logger.info(LOCATION, 'Retrieving actions...')
try:
actions = self.bot_service.get(ACTIONS_ENDPOINT)
Logger.success(
LOCATION, 'Successfully retrieved ' + str(len(actions)) +
' action(s) from server')
Store.set_actions(actions)
return actions
except falcon.HTTPServiceUnavailable:
Logger.warning(
LOCATION,
'Unable to retrieve actions from server. Loading locally stored action(s)...'
)
actions = self.store.get_actions()
Logger.success(
LOCATION, 'Successfully loaded ' + str(len(actions)) +
' cached action(s)')
return actions
def generate_qr_code(self):
try:
Logger.info(LOCATION,
'Generating QR Code for alternative pairing...')
device_information = self.configuration.get_device_information()
image = qrcode.make(json.dumps(device_information),
image_factory=PymagingImage)
Store.save_qrcode(image)
Logger.success(LOCATION, 'QR Code successfully generated')
except Exception as exception:
Logger.error(LOCATION, 'QR Code not generated')
raise exception
def pair(self):
try:
response = self.bot_service.get(RESOURCE)
except:
Logger.error(LOCATION, 'Failed pairing attempt.')
return False
if response['status'] is True:
Logger.success(LOCATION, 'Device successfully paired.')
return True
else:
Logger.error(LOCATION, 'Failed pairing attempt.')
return False
def remove_configuration():
try:
if Store.has_configuration():
os.remove(_configuration_file_path)
os.remove(_qr_image_path)
Logger.success(LOCATION,
'Successfully removed configuration file')
else:
Logger.warning(LOCATION,
'Could not reset, no configuration available')
except IOError as io_error:
Logger.error(LOCATION, io_error.message)
raise io_error
def run(self):
if not self.can_pair:
return
if self.device_status == DeviceStatus.MULTIPAIR:
Logger.info(LOCATION,
'Multipair mode, no need to poll or delete keys...')
return
Logger.info(LOCATION, 'Starting to pair device...')
for tries in range(1, MAXIMUM_TRIES + 1):
Logger.info(LOCATION, 'Pairing device, attempt: ' + str(tries))
if self.pair():
return True
time.sleep(POLLING_INTERVAL_IN_SECONDS)
return False
def onWriteRequest(self, data, offset, withoutResponse, callback):
if offset:
callback(Characteristic.RESULT_ATTR_NOT_LONG)
else:
callback(Characteristic.RESULT_SUCCESS)
if offset > len(data):
callback(bleno.Characteristic.RESULT_INVALID_OFFSET)
Logger.error(LOCATION, 'Error in Characteristic')
else:
callback(Characteristic.RESULT_SUCCESS, data[offset:])
details = json.loads(data)
if details['Skip'] == True:
Logger.info(
LOCATION, 'Connected device skipped Wifi setup. ' +
'Initializing pairing process...')
PairingService().run()
else:
wifiDetails = ''
if details['SSID'] != '':
wifiDetails = 'ctrl_interface=DIR=/var/run/wpa_supplicant' + \
' GROUP=netdev\r\n update_config=1\r\n country=GB \r\n'+ \
'network={ \r\n ssid="' + details['SSID'] + \
'" \r\n' + \
' psk="' + details['PWD'] + \
'" \r\n ' + \
'key_mgmt=WPA-PSK \r\n}'
Logger.info(
LOCATION,
'Wifi setup complete. Initializing pairing process...')
PairingService().run()
time.sleep(3)
subprocess.run([
'sudo echo \'' + wifiDetails + '\' > ./wpa_supplicant.conf'
],
shell=True)
subprocess.run([
"sudo", "cp", "./wpa_supplicant.conf",
"/etc/wpa_supplicant/"
])
subprocess.run(["sudo", "rm", "./wpa_supplicant.conf"])
subprocess.run(["sudo", "sleep", "1", "&&", "reboot"])
def remove_configuration():
try:
if Store.has_configuration():
os.remove(_configuration_file_path)
if os.path.isfile(_qr_image_path):
os.remove(_qr_image_path)
if os.path.isfile(_saved_actions_path):
os.remove(_saved_actions_path)
if os.path.isfile(_last_triggered_path):
os.remove(_last_triggered_path)
Logger.success(LOCATION,
'Successfully reset device configuration')
else:
Logger.warning(LOCATION,
'Could not reset, no configuration available')
except IOError as io_error:
Logger.error(LOCATION, io_error.message)
raise io_error
def _handle_ssl_exception():
error = 'SSL Fingerprint verification failed. Could not verify server.'
Logger.error(LOCATION, error)
raise falcon.HTTPServiceUnavailable(description=error)
def on_setServiceError(error):
if error:
Logger.error(LOCATION, 'setServices: ', error)
else:
Logger.info(LOCATION, 'Successfully set services.')
# Function to validate the given IP Address
def is_valid(ip):
regex = '''^(25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.(
25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.(
25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)\.(
25[0-5]|2[0-4][0-9]|[0-1]?[0-9][0-9]?)'''
return re.search(regex, ip)
if not store.has_configuration():
if len(sys.argv) <= 1:
exit('Please add your makerID to configure the SDK: "make server makerID=YOUR_MAKER_ID"')
maker_id = sys.argv[1] # 1 -> First argument after server.py
configuration_service.initialize_configuration(maker_id)
# If OS is windows based, it doesn't support gunicorn so we run waitress
if os.name == 'nt':
subprocess.run(['waitress-serve', '--port=3001', 'bot_python_sdk.api:api'])
else:
cmd = subprocess.Popen(['hostname', '-I'], stdout=subprocess.PIPE)
ip = cmd.communicate()[0].decode('ascii').split(' ')[0]
if is_valid(ip):
Logger.info(LOCATION, "Detected IP Address :" + ip)
else:
Logger.info(LOCATION, "Failed in detecting valid IP Address, using loop back address: 127.0.0.1")
ip = '127.0.0.1'
Logger.info(LOCATION, "Starting Webserver at URL: http://" + ip + ':3001/')
subprocess.run(['gunicorn', '-b', ip + ':3001', 'bot_python_sdk.api:api'])
def on_get(self, request, response):
Logger.info(LOCATION,
INCOMING_REQUEST + METHOD_GET + ' ' + ACTIONS_ENDPOINT)
response.media = self.action_service.get_actions()
def _handle_unsupported_frequency(frequency):
error = 'Frequency not supported: ' + frequency
Logger.error(LOCATION, error)
raise falcon.HTTPBadRequest(description=error)
def on_get(self, request, response):
Logger.info(LOCATION, "Serving QRCode Request...")
stream = open(QRCODE_IMG_PATH, 'rb')
content_length = os.path.getsize(QRCODE_IMG_PATH)
response.content_type = "image/png"
response.stream, response.content_length = stream, content_length
def _handle_maximum_frequency(frequency):
error = 'Maximum ' + frequency + ' triggers reached'
Logger.error(LOCATION, error)
raise falcon.HTTPBadRequest(description=error)
def check_and_resume_configuration():
configuration = ConfigurationStore().get()
device_status = configuration.get_device_status()
system_platform = platform.system()
Logger.info(LOCATION, "Detected Platform System: " + system_platform)
if device_status is DeviceStatus.ACTIVE:
Logger.info(LOCATION,
"Device is already active, no need to further configure")
Logger.info(LOCATION, "Server is waiting for requests to serve...")
Logger.info(
LOCATION,
"Supported Endpoints: /qrcode /actions /pairing /activate"
)
elif device_status is DeviceStatus.PAIRED:
Logger.info(LOCATION,
"Device state is PAIRED, resuming the configuration")
ConfigurationService().resume_configuration()
elif device_status is DeviceStatus.MULTIPAIR and PairingService().pair():
Logger.info(
LOCATION,
"Device is paired as MULTIPAIR, Server is waiting for requests to serve..."
)
else:
Logger.info(
LOCATION,
"Pair the device either using QRCode or Bluetooth Service through FINN Mobile App"
)
if system_platform != 'Darwin' and configuration.is_bluetooth_enabled(
):
from bot_python_sdk.bluetooth_service import BluetoothService
# Handle BLE specific events and callbacks
BluetoothService().initialize()
ConfigurationService().resume_configuration()
def generate_key(self):
Logger.info('Key Generator', 'Generating KeyPair...')
key = PKey()
key.generate_key(TYPE_RSA, 1024)
key = key.to_cryptography_key()
return self._public_key(key), self._private_key(key)
def on_get(self, request, response):
Logger.info(LOCATION, "Serving base endpoint request...")
response.body = '{"message": "BoT-Python-SDK Webserver", "endpoints" : "/qrcode /actions /pairing /activate" }'
response.status = falcon.HTTP_200
