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Initial step to have continuous integration

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This commit introduces the use of tox, which currently only verifies
that code is formatted according to the black project. More checks will
come in upcoming PRs for codespell, pydocstyle, flake8 and mypy.

A GitHub actions is included that runs tox on new pull requests, so we
get automatic feedback and can block commits that fail any check.
Another (official) action that runs hassfest is included as well, to
make sure we are compatible with Home Assistant.
This commit is contained in:
Pierre Ståhl
2020-09-22 09:38:14 +02:00
parent 83b3b6f21b
commit 30392d3ac5
7 changed files with 266 additions and 143 deletions
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317
custom_components/localtuya/pytuya/__init__.py
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@@ -46,7 +46,7 @@ import colorsys
import binascii
try:
#raise ImportError
# raise ImportError
import Crypto
from Crypto.Cipher import AES # PyCrypto
except ImportError:
@@ -55,156 +55,155 @@ except ImportError:
version_tuple = (8, 1, 0)
version = version_string = __version__ = '%d.%d.%d' % version_tuple
__author__ = 'rospogrigio'
version = version_string = __version__ = "%d.%d.%d" % version_tuple
__author__ = "rospogrigio"
log = logging.getLogger(__name__)
logging.basicConfig() # TODO include function name/line numbers in log
#log.setLevel(level=logging.DEBUG) # Uncomment to Debug
# log.setLevel(level=logging.DEBUG) # Uncomment to Debug
log.debug('%s version %s', __name__, version)
log.debug('Python %s on %s', sys.version, sys.platform)
log.debug("%s version %s", __name__, version)
log.debug("Python %s on %s", sys.version, sys.platform)
if Crypto is None:
log.debug('Using pyaes version %r', pyaes.VERSION)
log.debug('Using pyaes from %r', pyaes.__file__)
log.debug("Using pyaes version %r", pyaes.VERSION)
log.debug("Using pyaes from %r", pyaes.__file__)
else:
log.debug('Using PyCrypto %r', Crypto.version_info)
log.debug('Using PyCrypto from %r', Crypto.__file__)
log.debug("Using PyCrypto %r", Crypto.version_info)
log.debug("Using PyCrypto from %r", Crypto.__file__)
SET = 'set'
STATUS = 'status'
SET = "set"
STATUS = "status"
PROTOCOL_VERSION_BYTES_31 = b'3.1'
PROTOCOL_VERSION_BYTES_33 = b'3.3'
PROTOCOL_VERSION_BYTES_31 = b"3.1"
PROTOCOL_VERSION_BYTES_33 = b"3.3"
IS_PY2 = sys.version_info[0] == 2
class AESCipher(object):
def __init__(self, key):
self.bs = 16
self.key = key
def encrypt(self, raw, use_base64 = True):
def encrypt(self, raw, use_base64=True):
if Crypto:
raw = self._pad(raw)
cipher = AES.new(self.key, mode=AES.MODE_ECB)
crypted_text = cipher.encrypt(raw)
else:
_ = self._pad(raw)
cipher = pyaes.blockfeeder.Encrypter(pyaes.AESModeOfOperationECB(self.key)) # no IV, auto pads to 16
cipher = pyaes.blockfeeder.Encrypter(
pyaes.AESModeOfOperationECB(self.key)
) # no IV, auto pads to 16
crypted_text = cipher.feed(raw)
crypted_text += cipher.feed() # flush final block
#print('crypted_text (%d) %r' % (len(crypted_text), crypted_text))
# print('crypted_text (%d) %r' % (len(crypted_text), crypted_text))
if use_base64:
return base64.b64encode(crypted_text)
else:
return crypted_text
def decrypt(self, enc, use_base64=True):
if use_base64:
enc = base64.b64decode(enc)
#print('enc (%d) %r' % (len(enc), enc))
#enc = self._unpad(enc)
#enc = self._pad(enc)
#print('upadenc (%d) %r' % (len(enc), enc))
# print('enc (%d) %r' % (len(enc), enc))
# enc = self._unpad(enc)
# enc = self._pad(enc)
# print('upadenc (%d) %r' % (len(enc), enc))
if Crypto:
cipher = AES.new(self.key, AES.MODE_ECB)
raw = cipher.decrypt(enc)
#print('raw (%d) %r' % (len(raw), raw))
return self._unpad(raw).decode('utf-8')
#return self._unpad(cipher.decrypt(enc)).decode('utf-8')
# print('raw (%d) %r' % (len(raw), raw))
return self._unpad(raw).decode("utf-8")
# return self._unpad(cipher.decrypt(enc)).decode('utf-8')
else:
cipher = pyaes.blockfeeder.Decrypter(pyaes.AESModeOfOperationECB(self.key)) # no IV, auto pads to 16
cipher = pyaes.blockfeeder.Decrypter(
pyaes.AESModeOfOperationECB(self.key)
) # no IV, auto pads to 16
plain_text = cipher.feed(enc)
plain_text += cipher.feed() # flush final block
return plain_text
def _pad(self, s):
padnum = self.bs - len(s) % self.bs
return s + padnum * chr(padnum).encode()
@staticmethod
def _unpad(s):
return s[:-ord(s[len(s)-1:])]
return s[: -ord(s[len(s) - 1 :])]
def bin2hex(x, pretty=False):
if pretty:
space = ' '
space = " "
else:
space = ''
space = ""
if IS_PY2:
result = ''.join('%02X%s' % (ord(y), space) for y in x)
result = "".join("%02X%s" % (ord(y), space) for y in x)
else:
result = ''.join('%02X%s' % (y, space) for y in x)
result = "".join("%02X%s" % (y, space) for y in x)
return result
def hex2bin(x):
if IS_PY2:
return x.decode('hex')
return x.decode("hex")
else:
return bytes.fromhex(x)
# This is intended to match requests.json payload at https://github.com/codetheweb/tuyapi :
# type_0a devices require the 0a command as the status request
# type_0d devices require the 0d command as the status request, and the list of dps used set to null in the request payload (see generate_payload method)
payload_dict = {
"type_0a": {
"status": {
"hexByte": "0a",
"command": {"gwId": "", "devId": ""}
"type_0a": {
"status": {"hexByte": "0a", "command": {"gwId": "", "devId": ""}},
"set": {"hexByte": "07", "command": {"devId": "", "uid": "", "t": ""}},
"prefix": "000055aa00000000000000", # Next byte is command byte ("hexByte") some zero padding, then length of remaining payload, i.e. command + suffix (unclear if multiple bytes used for length, zero padding implies could be more than one byte)
"suffix": "000000000000aa55",
},
"set": {
"hexByte": "07",
"command": {"devId": "", "uid": "", "t": ""}
"type_0d": {
"status": {"hexByte": "0d", "command": {"devId": "", "uid": "", "t": ""}},
"set": {"hexByte": "07", "command": {"devId": "", "uid": "", "t": ""}},
"prefix": "000055aa00000000000000", # Next byte is command byte ("hexByte") some zero padding, then length of remaining payload, i.e. command + suffix (unclear if multiple bytes used for length, zero padding implies could be more than one byte)
"suffix": "000000000000aa55",
},
"prefix": "000055aa00000000000000", # Next byte is command byte ("hexByte") some zero padding, then length of remaining payload, i.e. command + suffix (unclear if multiple bytes used for length, zero padding implies could be more than one byte)
"suffix": "000000000000aa55"
},
"type_0d": {
"status": {
"hexByte": "0d",
"command": {"devId": "", "uid": "", "t": ""}
},
"set": {
"hexByte": "07",
"command": {"devId": "", "uid": "", "t": ""}
},
"prefix": "000055aa00000000000000", # Next byte is command byte ("hexByte") some zero padding, then length of remaining payload, i.e. command + suffix (unclear if multiple bytes used for length, zero padding implies could be more than one byte)
"suffix": "000000000000aa55"
}
}
class TuyaInterface(object):
def __init__(self, dev_id, address, local_key, protocol_version, connection_timeout=10):
def __init__(
self, dev_id, address, local_key, protocol_version, connection_timeout=10
):
"""
Represents a Tuya device.
Args:
dev_id (str): The device id.
address (str): The network address.
local_key (str, optional): The encryption key. Defaults to None.
Attributes:
port (int): The port to connect to.
"""
self.id = dev_id
self.address = address
self.local_key = local_key.encode('latin1')
self.local_key = local_key.encode("latin1")
self.connection_timeout = connection_timeout
self.version = protocol_version
self.dev_type = 'type_0a'
self.dev_type = "type_0a"
self.dps_to_request = {}
self.port = 6668 # default - do not expect caller to pass in
def __repr__(self):
return '%r' % ((self.id, self.address),) # FIXME can do better than this
return "%r" % ((self.id, self.address),) # FIXME can do better than this
def _send_receive(self, payload):
"""
Send single buffer `payload` and receive a single buffer.
Args:
payload(bytes): Data to send.
"""
@@ -214,33 +213,33 @@ class TuyaInterface(object):
s.settimeout(self.connection_timeout)
s.connect((self.address, self.port))
except Exception as e:
print('Failed to connect to %s. Raising Exception.' % (self.address))
raise e
print("Failed to connect to %s. Raising Exception." % (self.address))
raise e
try:
s.send(payload)
except Exception as e:
print('Failed to send payload to %s. Raising Exception.' % (self.address))
#s.close()
raise e
print("Failed to send payload to %s. Raising Exception." % (self.address))
# s.close()
raise e
try:
data = s.recv(1024)
# print("FIRST: Received %d bytes" % len(data) )
# sometimes the first packet does not contain data (typically 28 bytes): need to read again
# print("FIRST: Received %d bytes" % len(data) )
# sometimes the first packet does not contain data (typically 28 bytes): need to read again
if len(data) < 40:
time.sleep(0.1)
data = s.recv(1024)
# print("SECOND: Received %d bytes" % len(data) )
# print("SECOND: Received %d bytes" % len(data) )
except Exception as e:
print('Failed to receive data from %s. Raising Exception.' % (self.address))
#s.close()
raise e
print("Failed to receive data from %s. Raising Exception." % (self.address))
# s.close()
raise e
s.close()
return data
def detect_available_dps(self):
# type_0d devices need a sort of bruteforce querying in order to detect the list of available dps
# type_0d devices need a sort of bruteforce querying in order to detect the list of available dps
# experience shows that the dps available are usually in the ranges [1-25] and [100-110]
# need to split the bruteforcing in different steps due to request payload limitation (max. length = 255)
detected_dps = {}
@@ -253,7 +252,7 @@ class TuyaInterface(object):
except Exception as e:
print("Failed to get status: [{}]".format(e))
raise CannotConnect
detected_dps.update( data["dps"] )
detected_dps.update(data["dps"])
if self.dev_type == "type_0a":
return detected_dps
@@ -265,7 +264,7 @@ class TuyaInterface(object):
except Exception as e:
print("Failed to get status: [{}]".format(e))
raise CannotConnect
detected_dps.update( data["dps"] )
detected_dps.update(data["dps"])
self.dps_to_request = {"1": None}
self.add_dps_to_request(range(21, 31))
@@ -274,7 +273,7 @@ class TuyaInterface(object):
except Exception as e:
print("Failed to get status: [{}]".format(e))
raise CannotConnect
detected_dps.update( data["dps"] )
detected_dps.update(data["dps"])
self.dps_to_request = {"1": None}
self.add_dps_to_request(range(100, 111))
@@ -283,8 +282,8 @@ class TuyaInterface(object):
except Exception as e:
print("Failed to get status: [{}]".format(e))
raise CannotConnect
detected_dps.update( data["dps"] )
# print("DATA IS [{}] detected_dps [{}]".format(data,detected_dps))
detected_dps.update(data["dps"])
# print("DATA IS [{}] detected_dps [{}]".format(data,detected_dps))
return detected_dps
@@ -304,82 +303,111 @@ class TuyaInterface(object):
data(dict, optional): The data to be send.
This is what will be passed via the 'dps' entry
"""
json_data = payload_dict[self.dev_type][command]['command']
command_hb = payload_dict[self.dev_type][command]['hexByte']
json_data = payload_dict[self.dev_type][command]["command"]
command_hb = payload_dict[self.dev_type][command]["hexByte"]
if 'gwId' in json_data:
json_data['gwId'] = self.id
if 'devId' in json_data:
json_data['devId'] = self.id
if 'uid' in json_data:
json_data['uid'] = self.id # still use id, no seperate uid
if 't' in json_data:
json_data['t'] = str(int(time.time()))
if "gwId" in json_data:
json_data["gwId"] = self.id
if "devId" in json_data:
json_data["devId"] = self.id
if "uid" in json_data:
json_data["uid"] = self.id # still use id, no seperate uid
if "t" in json_data:
json_data["t"] = str(int(time.time()))
if data is not None:
json_data['dps'] = data
if command_hb == '0d':
json_data['dps'] = self.dps_to_request
# log.info('******** COMMAND IS %r', self.dps_to_request)
json_data["dps"] = data
if command_hb == "0d":
json_data["dps"] = self.dps_to_request
# log.info('******** COMMAND IS %r', self.dps_to_request)
# Create byte buffer from hex data
json_payload = json.dumps(json_data)
#print(json_payload)
json_payload = json_payload.replace(' ', '') # if spaces are not removed device does not respond!
json_payload = json_payload.encode('utf-8')
log.debug('json_payload=%r', json_payload)
#print('json_payload = ', json_payload, ' cmd = ', command_hb)
# print(json_payload)
json_payload = json_payload.replace(
" ", ""
) # if spaces are not removed device does not respond!
json_payload = json_payload.encode("utf-8")
log.debug("json_payload=%r", json_payload)
# print('json_payload = ', json_payload, ' cmd = ', command_hb)
if self.version == 3.3:
self.cipher = AESCipher(self.local_key) # expect to connect and then disconnect to set new
self.cipher = AESCipher(
self.local_key
) # expect to connect and then disconnect to set new
json_payload = self.cipher.encrypt(json_payload, False)
self.cipher = None
if command_hb != '0a':
if command_hb != "0a":
# add the 3.3 header
json_payload = PROTOCOL_VERSION_BYTES_33 + b"\0\0\0\0\0\0\0\0\0\0\0\0" + json_payload
json_payload = (
PROTOCOL_VERSION_BYTES_33
+ b"\0\0\0\0\0\0\0\0\0\0\0\0"
+ json_payload
)
elif command == SET:
# need to encrypt
self.cipher = AESCipher(self.local_key) # expect to connect and then disconnect to set new
self.cipher = AESCipher(
self.local_key
) # expect to connect and then disconnect to set new
json_payload = self.cipher.encrypt(json_payload)
preMd5String = b'data=' + json_payload + b'||lpv=' + PROTOCOL_VERSION_BYTES_31 + b'||' + self.local_key
preMd5String = (
b"data="
+ json_payload
+ b"||lpv="
+ PROTOCOL_VERSION_BYTES_31
+ b"||"
+ self.local_key
)
m = md5()
m.update(preMd5String)
hexdigest = m.hexdigest()
json_payload = PROTOCOL_VERSION_BYTES_31 + hexdigest[8:][:16].encode('latin1') + json_payload
json_payload = (
PROTOCOL_VERSION_BYTES_31
+ hexdigest[8:][:16].encode("latin1")
+ json_payload
)
self.cipher = None # expect to connect and then disconnect to set new
postfix_payload = hex2bin(bin2hex(json_payload) + payload_dict[self.dev_type]['suffix'])
assert len(postfix_payload) <= 0xff
postfix_payload_hex_len = '%x' % len(postfix_payload) # TODO this assumes a single byte 0-255 (0x00-0xff)
buffer = hex2bin( payload_dict[self.dev_type]['prefix'] +
payload_dict[self.dev_type][command]['hexByte'] +
'000000' +
postfix_payload_hex_len ) + postfix_payload
postfix_payload = hex2bin(
bin2hex(json_payload) + payload_dict[self.dev_type]["suffix"]
)
assert len(postfix_payload) <= 0xFF
postfix_payload_hex_len = "%x" % len(
postfix_payload
) # TODO this assumes a single byte 0-255 (0x00-0xff)
buffer = (
hex2bin(
payload_dict[self.dev_type]["prefix"]
+ payload_dict[self.dev_type][command]["hexByte"]
+ "000000"
+ postfix_payload_hex_len
)
+ postfix_payload
)
# calc the CRC of everything except where the CRC goes and the suffix
hex_crc = format(binascii.crc32(buffer[:-8]) & 0xffffffff, '08X')
hex_crc = format(binascii.crc32(buffer[:-8]) & 0xFFFFFFFF, "08X")
buffer = buffer[:-8] + hex2bin(hex_crc) + buffer[-4:]
#print('full buffer(%d) %r' % (len(buffer), bin2hex(buffer, pretty=True) ))
#print('full buffer(%d) %r' % (len(buffer), " ".join("{:02x}".format(ord(c)) for c in buffer)))
# print('full buffer(%d) %r' % (len(buffer), bin2hex(buffer, pretty=True) ))
# print('full buffer(%d) %r' % (len(buffer), " ".join("{:02x}".format(ord(c)) for c in buffer)))
return buffer
def status(self):
log.debug('status() entry (dev_type is %s)', self.dev_type)
log.debug("status() entry (dev_type is %s)", self.dev_type)
# open device, send request, then close connection
payload = self.generate_payload('status')
payload = self.generate_payload("status")
data = self._send_receive(payload)
log.debug('status received data=%r', data)
log.debug("status received data=%r", data)
result = data[20:-8] # hard coded offsets
if self.dev_type != 'type_0a':
if self.dev_type != "type_0a":
result = result[15:]
log.debug('result=%r', result)
#result = data[data.find('{'):data.rfind('}')+1] # naive marker search, hope neither { nor } occur in header/footer
#print('result %r' % result)
if result.startswith(b'{'):
log.debug("result=%r", result)
# result = data[data.find('{'):data.rfind('}')+1] # naive marker search, hope neither { nor } occur in header/footer
# print('result %r' % result)
if result.startswith(b"{"):
# this is the regular expected code path
if not isinstance(result, str):
result = result.decode()
@@ -388,31 +416,36 @@ class TuyaInterface(object):
# got an encrypted payload, happens occasionally
# expect resulting json to look similar to:: {"devId":"ID","dps":{"1":true,"2":0},"t":EPOCH_SECS,"s":3_DIGIT_NUM}
# NOTE dps.2 may or may not be present
result = result[len(PROTOCOL_VERSION_BYTES_31):] # remove version header
result = result[16:] # remove (what I'm guessing, but not confirmed is) 16-bytes of MD5 hexdigest of payload
result = result[len(PROTOCOL_VERSION_BYTES_31) :] # remove version header
result = result[
16:
] # remove (what I'm guessing, but not confirmed is) 16-bytes of MD5 hexdigest of payload
cipher = AESCipher(self.local_key)
result = cipher.decrypt(result)
print('decrypted result=[{}]'.format(result))
log.debug('decrypted result=%r', result)
print("decrypted result=[{}]".format(result))
log.debug("decrypted result=%r", result)
if not isinstance(result, str):
result = result.decode()
result = json.loads(result)
elif self.version == 3.3:
elif self.version == 3.3:
cipher = AESCipher(self.local_key)
result = cipher.decrypt(result, False)
log.debug('decrypted result=%r', result)
log.debug("decrypted result=%r", result)
if "data unvalid" in result:
self.dev_type = 'type_0d'
log.debug("'data unvalid' error detected: switching to dev_type %r", self.dev_type)
self.dev_type = "type_0d"
log.debug(
"'data unvalid' error detected: switching to dev_type %r",
self.dev_type,
)
return self.status()
if not isinstance(result, str):
result = result.decode()
result = json.loads(result)
else:
log.error('Unexpected status() payload=%r', result)
log.error("Unexpected status() payload=%r", result)
return result
def set_dps(self, value, dps_index):
"""
Set value (may be any type: bool, int or string) of any dps index.
@@ -425,19 +458,17 @@ class TuyaInterface(object):
if isinstance(dps_index, int):
dps_index = str(dps_index) # index and payload is a string
payload = self.generate_payload(SET, {
dps_index: value})
payload = self.generate_payload(SET, {dps_index: value})
data = self._send_receive(payload)
log.debug('set_dps received data=%r', data)
log.debug("set_dps received data=%r", data)
return data
def set_timer(self, num_secs):
"""
Set a timer.
Args:
num_secs(int): Number of seconds
"""
@@ -445,13 +476,13 @@ class TuyaInterface(object):
# Dumb heuristic; Query status, pick last device id as that is probably the timer
status = self.status()
devices = status['dps']
devices = status["dps"]
devices_numbers = list(devices.keys())
devices_numbers.sort()
dps_id = devices_numbers[-1]
payload = self.generate_payload(SET, {dps_id:num_secs})
payload = self.generate_payload(SET, {dps_id: num_secs})
data = self._send_receive(payload)
log.debug('set_timer received data=%r', data)
log.debug("set_timer received data=%r", data)
return data