def main():
dev = MockWrite10()
dev.opcodes = sbc
s = SCSI(dev)
s.blocksize = 512
data = bytearray(27 * 512)
w = s.write10(1024, 27, data)
cdb = w.cdb
assert cdb[0] == s.device.opcodes.WRITE_10.value
assert cdb[1] == 0
assert scsi_ba_to_int(cdb[2:6]) == 1024
assert cdb[6] == 0
assert scsi_ba_to_int(cdb[7:9]) == 27
assert cdb[9] == 0
cdb = w.unmarshall_cdb(cdb)
assert cdb['opcode'] == s.device.opcodes.WRITE_10.value
assert cdb['wrprotect'] == 0
assert cdb['dpo'] == 0
assert cdb['fua'] == 0
assert cdb['lba'] == 1024
assert cdb['group'] == 0
assert cdb['tl'] == 27
d = Write10.unmarshall_cdb(Write10.marshall_cdb(cdb))
assert d == cdb
w = s.write10(65536, 27, data, wrprotect=2, dpo=1, fua=1, group=19)
cdb = w.cdb
assert cdb[0] == s.device.opcodes.WRITE_10.value
assert cdb[1] == 0x58
assert scsi_ba_to_int(cdb[2:6]) == 65536
assert cdb[6] == 0x13
assert scsi_ba_to_int(cdb[7:9]) == 27
assert cdb[9] == 0
cdb = w.unmarshall_cdb(cdb)
assert cdb['opcode'] == s.device.opcodes.WRITE_10.value
assert cdb['wrprotect'] == 2
assert cdb['dpo'] == 1
assert cdb['fua'] == 1
assert cdb['lba'] == 65536
assert cdb['group'] == 19
assert cdb['tl'] == 27
d = Write10.unmarshall_cdb(Write10.marshall_cdb(cdb))
assert d == cdb
def main():
dev = MockWrite10()
dev.opcodes = sbc
s = SCSI(dev)
s.blocksize = 512
data = bytearray(27 * 512)
w = s.write10(1024, 27, data)
cdb = w.cdb
assert cdb[0] == s.device.opcodes.WRITE_10.value
assert cdb[1] == 0
assert scsi_ba_to_int(cdb[2:6]) == 1024
assert cdb[6] == 0
assert scsi_ba_to_int(cdb[7:9]) == 27
assert cdb[9] == 0
cdb = w.unmarshall_cdb(cdb)
assert cdb['opcode'] == s.device.opcodes.WRITE_10.value
assert cdb['wrprotect'] == 0
assert cdb['dpo'] == 0
assert cdb['fua'] == 0
assert cdb['lba'] == 1024
assert cdb['group'] == 0
assert cdb['tl'] == 27
d = Write10.unmarshall_cdb(Write10.marshall_cdb(cdb))
assert d == cdb
w = s.write10(65536, 27, data, wrprotect=2, dpo=1, fua=1, group=19)
cdb = w.cdb
assert cdb[0] == s.device.opcodes.WRITE_10.value
assert cdb[1] == 0x58
assert scsi_ba_to_int(cdb[2:6]) == 65536
assert cdb[6] == 0x13
assert scsi_ba_to_int(cdb[7:9]) == 27
assert cdb[9] == 0
cdb = w.unmarshall_cdb(cdb)
assert cdb['opcode'] == s.device.opcodes.WRITE_10.value
assert cdb['wrprotect'] == 2
assert cdb['dpo'] == 1
assert cdb['fua'] == 1
assert cdb['lba'] == 65536
assert cdb['group'] == 19
assert cdb['tl'] == 27
d = Write10.unmarshall_cdb(Write10.marshall_cdb(cdb))
assert d == cdb
class Device(object):
def __init__(self, device):
if not device:
raise exceptions.CommandLineError(
'--device parameter is required, should point to the disk '
'device representing the meter.')
self.device_name_ = device
self.scsi_device_ = SCSIDevice(device, readwrite=True)
self.scsi_ = SCSI(self.scsi_device_)
self.scsi_.blocksize = _REGISTER_SIZE
def connect(self):
inq = self.scsi_.inquiry()
logging.debug('Device connected: %r', inq.result)
vendor = inq.result['t10_vendor_identification'][:32]
if vendor != b'LifeScan':
raise exceptions.ConnectionFailed(
'Device %s is not a LifeScan glucometer.' % self.device_name_)
def disconnect(self):
return
def _send_request(self, lba, request_format, request_obj, response_format):
"""Send a request to the meter, and read its response.
Args:
lba: (int) the address of the block register to use, known
valid addresses are 3, 4 and 5.
request_format: a construct format identifier of the request to send
request_obj: the object to format with the provided identifier
response_format: a construct format identifier to parse the returned
message with.
Returns:
The Container object parsed from the response received by the meter.
Raises:
lifescan.MalformedCommand if Construct fails to build the request or
parse the response.
"""
try:
request = request_format.build(request_obj)
request_raw = _PACKET.build(
{'data': {
'value': {
'message': request,
}
}})
logging.debug('Request sent: %s', binascii.hexlify(request_raw))
self.scsi_.write10(lba, 1, request_raw)
response_raw = self.scsi_.read10(lba, 1)
logging.debug('Response received: %s',
binascii.hexlify(response_raw.datain))
response_pkt = _PACKET.parse(response_raw.datain).data
logging.debug('Response packet: %r', response_pkt)
response = response_format.parse(response_pkt.value.message)
logging.debug('Response parsed: %r', response)
return response
except construct.ConstructError as e:
raise lifescan.MalformedCommand(str(e))
def _query_string(self, selector):
response = self._send_request(3, _QUERY_REQUEST,
{'selector': selector}, _QUERY_RESPONSE)
# Unfortunately the CString implementation in construct does not support
# multi-byte encodings, so we need to discard the terminating null byte
# ourself.
return response.value[:-1]
def get_meter_info(self):
return common.MeterInfo(
'OneTouch %s glucometer' % self._query_string('model'),
serial_number=self.get_serial_number(),
version_info=('Software version: ' + self.get_version(), ),
native_unit=self.get_glucose_unit())
def get_serial_number(self):
return self._query_string('serial')
def get_version(self):
return self._query_string('software')
def get_datetime(self):
response = self._send_request(3, _READ_RTC_REQUEST, None,
_READ_RTC_RESPONSE)
return response.timestamp
def set_datetime(self, date=datetime.datetime.now()):
self._send_request(3, _WRITE_RTC_REQUEST, {'timestamp': date},
lifescan_binary_protocol.COMMAND_SUCCESS)
# The device does not return the new datetime, so confirm by calling
# READ RTC again.
return self.get_datetime()
def zero_log(self):
self._send_request(3, _MEMORY_ERASE_REQUEST, None,
lifescan_binary_protocol.COMMAND_SUCCESS)
def get_glucose_unit(self):
response = self._send_request(4, _READ_PARAMETER_REQUEST,
{'selector': 'unit'},
_READ_UNIT_RESPONSE)
return response.unit
def _get_reading_count(self):
response = self._send_request(3, _READ_RECORD_COUNT_REQUEST, None,
_READ_RECORD_COUNT_RESPONSE)
return response.count
def _get_reading(self, record_id):
response = self._send_request(3, _READ_RECORD_REQUEST,
{'record_id': record_id},
_READ_RECORD_RESPONSE)
return common.GlucoseReading(response.timestamp,
float(response.value),
meal=response.meal)
def get_readings(self):
record_count = self._get_reading_count()
for record_id in range(record_count):
yield self._get_reading(record_id)
class Device(object):
def __init__(self, device):
if not device:
raise exceptions.CommandLineError(
'--device parameter is required, should point to the disk device '
'representing the meter.')
self.device_name_ = device
self.scsi_device_ = SCSIDevice(device, readwrite=True)
self.scsi_ = SCSI(self.scsi_device_)
self.scsi_.blocksize = _REGISTER_SIZE
def _send_message(self, cmd, lba):
"""Send a request to the meter, and read its response.
Args:
cmd: (bytes) the raw command to send the device, without
preamble or checksum.
lba: (int) the address of the block register to use, known
valid addresses are 3, 4 and 5.
Returns:
(bytes) The raw response from the meter. No preamble or coda is
present, and the checksum has already been validated.
"""
self.scsi_.write10(lba, 1, _encode_message(cmd))
response = self.scsi_.read10(lba, 1)
# TODO: validate that the response is valid.
return _extract_message(response.datain)
def connect(self):
inq = self.scsi_.inquiry()
vendor = inq.result['t10_vendor_identification'][:32]
if vendor != b'LifeScan':
raise exceptions.ConnectionFailed(
'Device %s is not a LifeScan glucometer.' % self.device_name_)
def disconnect(self):
return
def get_meter_info(self):
return common.MeterInfo(
'OneTouch %s glucometer' % self._query_string(_QUERY_KEY_MODEL),
serial_number=self.get_serial_number(),
version_info=(
'Software version: ' + self.get_version(),),
native_unit=self.get_glucose_unit())
def _query_string(self, query_key):
response = self._send_message(_QUERY_REQUEST + query_key, 3)
if response[0:2] != b'\x04\06':
raise lifescan.MalformedCommand(
'invalid response, expected 04 06, received %02x %02x' % (
response[0], response[1]))
# Strings are encoded in wide characters (LE), but they should
# only contain ASCII characters. Note that the string is
# null-terminated, so the last character should be dropped.
return response[2:].decode('utf-16-le')[:-1]
def _read_parameter(self, parameter_key):
response = self._send_message(
_READ_PARAMETER_REQUEST + parameter_key, 4)
if response[0:2] != b'\x03\x06':
raise lifescan.MalformedCommand(
'invalid response, expected 03 06, received %02x %02x' % (
response[0], response[1]))
return response[2:]
def get_serial_number(self):
return self._query_string(_QUERY_KEY_SERIAL)
def get_version(self):
return self._query_string(_QUERY_KEY_SOFTWARE)
def get_datetime(self):
response = self._send_message(_READ_RTC_REQUEST, 3)
if response[0:2] != b'\x04\06':
raise lifescan.MalformedCommand(
'invalid response, expected 04 06, received %02x %02x' % (
response[0], response[1]))
(timestamp,) = _STRUCT_TIMESTAMP.unpack(response[2:])
return _convert_timestamp(timestamp)
def set_datetime(self, date=datetime.datetime.now()):
epoch = datetime.datetime.utcfromtimestamp(_EPOCH_BASE)
delta = date - epoch
timestamp = int(delta.total_seconds())
timestamp_bytes = _STRUCT_TIMESTAMP.pack(timestamp)
response = self._send_message(_WRITE_RTC_REQUEST + timestamp_bytes, 3)
if response[0:2] != b'\x04\06':
raise lifescan.MalformedCommand(
'invalid response, expected 04 06, received %02x %02x' % (
response[0], response[1]))
# The device does not return the new datetime, so confirm by
# calling READ RTC again.
return self.get_datetime()
def zero_log(self):
response = self._send_message(_MEMORY_ERASE_REQUEST, 3)
if response[0:2] != b'\x04\06':
raise lifescan.MalformedCommand(
'invalid response, expected 04 06, received %02x %02x' % (
response[0], response[1]))
def _get_reading_count(self):
response = self._send_message(_READ_RECORD_COUNT_REQUEST, 3)
if response[0:2] != b'\x04\06':
raise lifescan.MalformedCommand(
'invalid response, expected 04 06, received %02x %02x' % (
response[0], response[1]))
(record_count,) = _STRUCT_RECORDID.unpack(response[2:])
return record_count
def get_glucose_unit(self):
unit_value = self._read_parameter(_PARAMETER_KEY_UNIT)
if unit_value == b'\x00\x00\x00\x00':
return common.UNIT_MGDL
elif unit_value == b'\x01\x00\x00\x00':
return common.UNIT_MMOLL
else:
raise exceptions.InvalidGlucoseUnit('%r' % unit_value)
def _get_reading(self, record_number):
request = (_READ_RECORD_REQUEST_PREFIX +
_STRUCT_RECORDID.pack(record_number) +
_READ_RECORD_REQUEST_SUFFIX)
response = self._send_message(request, 3)
if response[0:2] != b'\x04\06':
raise lifescan.MalformedCommand(
'invalid response, expected 04 06, received %02x %02x' % (
response[0], response[1]))
(unused_const1, unused_const2, unused_counter, unused_const3,
unused_counter2, timestamp, value, unused_flags, unused_const4,
unused_const5) = _STRUCT_RECORD.unpack(response)
return common.Reading(_convert_timestamp(timestamp), float(value))
def get_readings(self):
record_count = self._get_reading_count()
for record_number in range(record_count):
yield self._get_reading(record_number)
class Device:
def __init__(self, device):
if not device:
raise exceptions.CommandLineError(
'--device parameter is required, should point to the disk '
'device representing the meter.')
self.device_name_ = device
self.scsi_device_ = SCSIDevice(device, readwrite=True)
self.scsi_ = SCSI(self.scsi_device_)
self.scsi_.blocksize = _REGISTER_SIZE
def connect(self):
inq = self.scsi_.inquiry()
logging.debug('Device connected: %r', inq.result)
vendor = inq.result['t10_vendor_identification'][:32]
if vendor != b'LifeScan':
raise exceptions.ConnectionFailed(
'Device %s is not a LifeScan glucometer.' % self.device_name_)
def disconnect(self): # pylint: disable=no-self-use
return
def _send_request(self, lba, request_format, request_obj, response_format):
"""Send a request to the meter, and read its response.
Args:
lba: (int) the address of the block register to use, known
valid addresses are 3, 4 and 5.
request_format: a construct format identifier of the request to send
request_obj: the object to format with the provided identifier
response_format: a construct format identifier to parse the returned
message with.
Returns:
The Container object parsed from the response received by the meter.
Raises:
lifescan.MalformedCommand if Construct fails to build the request or
parse the response.
"""
try:
request = request_format.build(request_obj)
request_raw = _PACKET.build({'data': {'value': {
'message': request,
}}})
logging.debug(
'Request sent: %s', binascii.hexlify(request_raw))
self.scsi_.write10(lba, 1, request_raw)
response_raw = self.scsi_.read10(lba, 1)
logging.debug(
'Response received: %s', binascii.hexlify(response_raw.datain))
response_pkt = _PACKET.parse(response_raw.datain).data
logging.debug('Response packet: %r', response_pkt)
response = response_format.parse(response_pkt.value.message)
logging.debug('Response parsed: %r', response)
return response
except construct.ConstructError as e:
raise lifescan.MalformedCommand(str(e))
def _query_string(self, selector):
response = self._send_request(
3, _QUERY_REQUEST, {'selector': selector}, _QUERY_RESPONSE)
return response.value
def get_meter_info(self):
return common.MeterInfo(
'OneTouch %s glucometer' % self._query_string('model'),
serial_number=self.get_serial_number(),
version_info=(
'Software version: ' + self.get_version(),),
native_unit=self.get_glucose_unit())
def get_serial_number(self):
return self._query_string('serial')
def get_version(self):
return self._query_string('software')
def get_datetime(self):
response = self._send_request(
3, _READ_RTC_REQUEST, None, _READ_RTC_RESPONSE)
return response.timestamp
def set_datetime(self, date=datetime.datetime.now()):
self._send_request(
3, _WRITE_RTC_REQUEST, {'timestamp': date},
_COMMAND_SUCCESS)
# The device does not return the new datetime, so confirm by calling
# READ RTC again.
return self.get_datetime()
def zero_log(self):
self._send_request(
3, _MEMORY_ERASE_REQUEST, None,
_COMMAND_SUCCESS)
def get_glucose_unit(self):
response = self._send_request(
4, _READ_PARAMETER_REQUEST, {'selector': 'unit'},
_READ_UNIT_RESPONSE)
return response.unit
def _get_reading_count(self):
response = self._send_request(
3, _READ_RECORD_COUNT_REQUEST, None, _READ_RECORD_COUNT_RESPONSE)
return response.count
def _get_reading(self, record_id):
response = self._send_request(
3, _READ_RECORD_REQUEST, {'record_id': record_id},
_READ_RECORD_RESPONSE)
return common.GlucoseReading(
response.timestamp, float(response.value), meal=response.meal)
def get_readings(self):
record_count = self._get_reading_count()
for record_id in range(record_count):
yield self._get_reading(record_id)
class Device(driver.GlucometerDevice):
def __init__(self, device: Optional[str]) -> None:
if not device:
raise exceptions.CommandLineError(
"--device parameter is required, should point to the disk "
"device representing the meter.")
super().__init__(device)
self.device_name_ = device
self.scsi_device_ = SCSIDevice(device, readwrite=True)
self.scsi_ = SCSI(self.scsi_device_)
self.scsi_.blocksize = _REGISTER_SIZE
def connect(self) -> None:
inq = self.scsi_.inquiry()
logging.debug("Device connected: %r", inq.result)
vendor = inq.result["t10_vendor_identification"][:32]
if vendor != b"LifeScan":
raise exceptions.ConnectionFailed(
f"Device {self.device_name_} is not a LifeScan glucometer.")
def disconnect(self) -> None: # pylint: disable=no-self-use
return
def _send_request(
self,
lba: int,
request_format: construct.Struct,
request_obj: Optional[Dict[str, Any]],
response_format: construct.Struct,
) -> construct.Container:
"""Send a request to the meter, and read its response.
Args:
lba: the address of the block register to use, known
valid addresses are 3, 4 and 5.
request_format: a construct format identifier of the request to send
request_obj: the object to format with the provided identifier
response_format: a construct format identifier to parse the returned
message with.
Returns:
The Container object parsed from the response received by the meter.
Raises:
lifescan.MalformedCommand if Construct fails to build the request or
parse the response.
"""
try:
request = request_format.build(request_obj)
request_raw = _PACKET.build(
{"data": {
"value": {
"message": request
}
}})
logging.debug("Request sent: %s", binascii.hexlify(request_raw))
self.scsi_.write10(lba, 1, request_raw)
response_raw = self.scsi_.read10(lba, 1)
logging.debug("Response received: %s",
binascii.hexlify(response_raw.datain))
response_pkt = _PACKET.parse(response_raw.datain).data
logging.debug("Response packet: %r", response_pkt)
response = response_format.parse(response_pkt.value.message)
logging.debug("Response parsed: %r", response)
return response
except construct.ConstructError as e:
raise lifescan.MalformedCommand(str(e))
def _query_string(self, selector: str) -> str:
response = self._send_request(3, _QUERY_REQUEST,
{"selector": selector}, _QUERY_RESPONSE)
return response.value
def get_meter_info(self) -> common.MeterInfo:
model = self._query_string("model")
return common.MeterInfo(
f"OneTouch {model} glucometer",
serial_number=self.get_serial_number(),
version_info=(f"Software version: {self.get_version()}", ),
native_unit=self.get_glucose_unit(),
)
def get_serial_number(self) -> str:
return self._query_string("serial")
def get_version(self) -> str:
return self._query_string("software")
def get_datetime(self) -> datetime.datetime:
response = self._send_request(3, _READ_RTC_REQUEST, None,
_READ_RTC_RESPONSE)
return response.timestamp
def _set_device_datetime(self,
date: datetime.datetime) -> datetime.datetime:
self._send_request(3, _WRITE_RTC_REQUEST, {"timestamp": date},
_COMMAND_SUCCESS)
# The device does not return the new datetime, so confirm by calling
# READ RTC again.
return self.get_datetime()
def zero_log(self) -> None:
self._send_request(3, _MEMORY_ERASE_REQUEST, None, _COMMAND_SUCCESS)
def get_glucose_unit(self) -> common.Unit:
response = self._send_request(4, _READ_PARAMETER_REQUEST,
{"selector": "unit"},
_READ_UNIT_RESPONSE)
return response.unit
def _get_reading_count(self) -> int:
response = self._send_request(3, _READ_RECORD_COUNT_REQUEST, None,
_READ_RECORD_COUNT_RESPONSE)
return response.count
def _get_reading(self, record_id: int) -> common.GlucoseReading:
response = self._send_request(3, _READ_RECORD_REQUEST,
{"record_id": record_id},
_READ_RECORD_RESPONSE)
return common.GlucoseReading(response.timestamp,
float(response.value),
meal=response.meal)
def get_readings(self) -> Generator[common.AnyReading, None, None]:
record_count = self._get_reading_count()
for record_id in range(record_count):
yield self._get_reading(record_id)