def read_op_log(self):
"""
Requests the operation log.
:return: None. Stores the operation log in the op_log attribute.
"""
self.send_command(cmd=DEFS.CMD_DATA_WRRQ,
data=bytearray.fromhex('0122000000000000000000'))
self.recv_long_reply()
# clears the operation log attribute
self.op_log = []
# extracts number of op log entries
op_count = struct.unpack('<H', self.last_payload_data[0:2])[0] / 16
op_count = int(op_count)
# skips the log size and zeros
i = 4
# extracts the operation fields from each entry
for idx in range(op_count):
op_id = self.last_payload_data[i+2]
op_time = misc.decode_time(self.last_payload_data[i + 4:i + 8])
# extract params
param1 = struct.unpack('<H', self.last_payload_data[i+8:i+10])[0]
param2 = struct.unpack('<H', self.last_payload_data[i+10:i+12])[0]
param3 = struct.unpack('<H', self.last_payload_data[i+12:i+14])[0]
param4 = struct.unpack('<H', self.last_payload_data[i+14:i+16])[0]
# append operation log entry
self.append_op_entry(op_id, op_time, param1,
param2, param3, param4)
i += 16
def get_device_time(self):
"""
Requests and returns the decoded time of the device.
:return: Datetime object, datetime of the device.
"""
self.send_command(DEFS.CMD_GET_TIME)
self.recv_reply()
return misc.decode_time(self.last_payload_data)
def read_att_log(self):
"""
Requests the attendance log.
:return: None. Stores the attendance log entries
in the att_log attribute.
"""
self.send_command(cmd=DEFS.CMD_DATA_WRRQ,
data=bytearray.fromhex('010d000000000000000000'))
self.recv_long_reply()
# clear the attendance log attribute
self.att_log = []
# get number of log entries
att_count = struct.unpack('<H', self.last_payload_data[0:2])[0] / 40
att_count = int(att_count)
# skip the size of log and zeros
i = 4
# extract the fields from each log entry
for idx in range(att_count):
# user internal index
user_sn = struct.unpack('<H', self.last_payload_data[i:i + 2])[0]
# user id
user_id = self.last_payload_data[i+2:i+11].decode('ascii').\
replace('\x00', '')
# verification type
ver_type = self.last_payload_data[i + 26]
# time of the record
att_time = misc.decode_time(self.last_payload_data[i + 27:i + 31])
# verification state
ver_state = self.last_payload_data[i + 31]
# append attendance entry
self.append_att_entry(user_sn, user_id, ver_type, att_time,
ver_state)
i += 40