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118 lines
4.3 KiB
118 lines
4.3 KiB
# -*- coding: utf-8 -*-
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###################################################################################
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#
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# Cybrosys Technologies Pvt. Ltd.
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# Copyright (C) 2018-TODAY Cybrosys Technologies(<http://www.cybrosys.com>).
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# Author: cybrosys(<https://www.cybrosys.com>)
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#
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# This program is free software: you can modify
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# it under the terms of the GNU Affero General Public License (AGPL) as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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###################################################################################
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import binascii
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from struct import pack, unpack
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from .zkconst import *
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def getSizeAttendance(self):
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"""Checks a returned packet to see if it returned CMD_PREPARE_DATA,
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indicating that data packets are to be sent
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Returns the amount of bytes that are going to be sent"""
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command = unpack('HHHH', self.data_recv[:8])[0]
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if command == CMD_PREPARE_DATA:
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size = unpack('I', self.data_recv[8:12])[0]
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return size
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else:
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return False
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def reverseHex(hexstr):
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tmp = ''
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for i in reversed(range(int(len(hexstr)/2))):
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tmp += hexstr[i*2:(i*2)+2]
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return tmp
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def zkgetattendance(self):
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"""Start a connection with the time clock"""
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command = CMD_ATTLOG_RRQ
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command_string = ''
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chksum = 0
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session_id = self.session_id
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reply_id = unpack('HHHH', self.data_recv[:8])[3]
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buf = self.createHeader(command, chksum, session_id,
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reply_id, command_string)
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self.zkclient.sendto(buf, self.address)
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try:
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self.data_recv, addr = self.zkclient.recvfrom(1024)
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if getSizeAttendance(self):
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bytes = getSizeAttendance(self)
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while bytes > 0:
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data_recv, addr = self.zkclient.recvfrom(1032)
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self.attendancedata.append(data_recv)
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bytes -= 1024
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self.session_id = unpack('HHHH', self.data_recv[:8])[2]
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data_recv = self.zkclient.recvfrom(8)
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attendance = []
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if len(self.attendancedata) > 0:
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# The first 4 bytes don't seem to be related to the user
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for x in range(len(self.attendancedata)):
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if x > 0:
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self.attendancedata[x] = self.attendancedata[x][8:]
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attendancedata = b''.join( self.attendancedata )
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attendancedata = attendancedata[14:]
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while len(attendancedata) > 40:
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uid, state, timestamp, space = unpack( '24s1s4s11s', attendancedata.ljust(40)[:40] )
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# Clean up some messy characters from the user name
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#uid = unicode(uid.strip('\x00|\x01\x10x'), errors='ignore')
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uid = uid.split(b'\x00', 1)[0].decode('utf-8')
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#print "%s, %s, %s" % (uid, state, decode_time( int( reverseHex( timestamp.encode('hex') ), 16 ) ) )
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attendance.append( ( uid, int( binascii.hexlify(state), 16 ), decode_time( int( reverseHex( binascii.hexlify(timestamp).decode('utf-8')), 16 ) ) ) )
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attendancedata = attendancedata[40:]
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return attendance
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except:
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return False
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def zkclearattendance(self):
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"""Start a connection with the time clock"""
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command = CMD_CLEAR_ATTLOG
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command_string = ''
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chksum = 0
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session_id = self.session_id
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reply_id = unpack('HHHH', self.data_recv[:8])[3]
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buf = self.createHeader(command, chksum, session_id,
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reply_id, command_string)
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self.zkclient.sendto(buf, self.address)
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#print buf.encode("hex")
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try:
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self.data_recv, addr = self.zkclient.recvfrom(1024)
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self.session_id = unpack('HHHH', self.data_recv[:8])[2]
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return self.data_recv[8:]
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except:
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return False
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