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uds: update security access and i/o control services (#738)

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This commit is contained in:
Greg Hogan
2021-10-10 00:45:59 -07:00
committed by GitHub
parent 5cb427a062
commit 288cbf65d1
1 changed files with 8 additions and 5 deletions
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13
python/uds.py
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@@ -586,13 +586,16 @@ class UdsClient():
power_down_time = resp[0]
return power_down_time
def security_access(self, access_type: ACCESS_TYPE, security_key: bytes = None):
def security_access(self, access_type: ACCESS_TYPE, security_key: bytes = b'', data_record: bytes = b''):
request_seed = access_type % 2 != 0
if request_seed and security_key is not None:
if request_seed and len(security_key) != 0:
raise ValueError('security_key not allowed')
if not request_seed and security_key is None:
if not request_seed and len(security_key) == 0:
raise ValueError('security_key is missing')
resp = self._uds_request(SERVICE_TYPE.SECURITY_ACCESS, subfunction=access_type, data=security_key)
if not request_seed and len(data_record) != 0:
raise ValueError('data_record not allowed')
data = security_key + data_record
resp = self._uds_request(SERVICE_TYPE.SECURITY_ACCESS, subfunction=access_type, data=data)
if request_seed:
security_seed = resp
return security_seed
@@ -792,7 +795,7 @@ class UdsClient():
return resp
def input_output_control_by_identifier(self, data_identifier_type: DATA_IDENTIFIER_TYPE, control_parameter_type: CONTROL_PARAMETER_TYPE,
control_option_record: bytes, control_enable_mask_record: bytes = b''):
control_option_record: bytes = b'', control_enable_mask_record: bytes = b''):
data = struct.pack('!H', data_identifier_type) + bytes([control_parameter_type]) + control_option_record + control_enable_mask_record
resp = self._uds_request(SERVICE_TYPE.INPUT_OUTPUT_CONTROL_BY_IDENTIFIER, subfunction=None, data=data)
resp_id = struct.unpack('!H', resp[0:2])[0] if len(resp) >= 2 else None