356 lines
11 KiB
Python
356 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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from struct import pack, unpack
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from socket import socket, AF_INET, SOCK_DGRAM
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from zk import const
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from zk.user import User
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class ZK(object):
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__data_recv = None
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is_connect = False
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def __init__(self, ip, port=4370, timeout=60):
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self.__address = (ip, port)
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self.__sock = socket(AF_INET, SOCK_DGRAM)
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self.__sock.settimeout(timeout)
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def __create_header(self, command, checksum=0, session_id=0, reply_id=65534, command_string=''):
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'''
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Puts a the parts that make up a packet together and packs them into a byte string
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'''
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buf = pack('HHHH', command, checksum, session_id, reply_id) + command_string
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buf = unpack('8B'+'%sB' % len(command_string), buf)
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checksum = unpack('H', self.__create_checksum(buf))[0]
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reply_id += 1
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if reply_id >= const.USHRT_MAX:
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reply_id -= const.USHRT_MAX
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buf = pack('HHHH', command, checksum, session_id, reply_id)
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return buf + command_string
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def __create_checksum(self, p):
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'''
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Calculates the checksum of the packet to be sent to the time clock
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Copied from zkemsdk.c
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'''
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l = len(p)
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checksum = 0
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while l > 1:
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checksum += unpack('H', pack('BB', p[0], p[1]))[0]
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p = p[2:]
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if checksum > const.USHRT_MAX:
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checksum -= const.USHRT_MAX
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l -= 2
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if l:
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checksum = checksum + p[-1]
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while checksum > const.USHRT_MAX:
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checksum -= const.USHRT_MAX
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checksum = ~checksum
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while checksum < 0:
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checksum += const.USHRT_MAX
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return pack('H', checksum)
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def __send_command(self, command, command_string='', response_size=8, checksum=0):
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try:
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buf = self.__create_header(command, checksum, self.__sesion_id, self.__reply_id, command_string)
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self.__sending_packet(buf)
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self.__receive_packet(response_size)
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if self.__response == const.CMD_ACK_OK:
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return {
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'status': True,
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'code': self.__response,
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'message': 'success',
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'data': self.__data_recv
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}
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else:
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return {
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'status': False,
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'code': self.__response,
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'message': 'failed',
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'data': self.__data_recv
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}
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except Exception, e:
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return {
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'status': False,
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'code': const.CMD_ACK_ERROR,
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'message': str(e),
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'data': ''
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}
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def __sending_packet(self, buf):
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self.__sock.sendto(buf, self.__address)
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def __receive_packet(self, buf_size):
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self.__data_recv = self.__sock.recv(buf_size)
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@property
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def __response(self):
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'''
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Checks a returned packet to see if it returned `CMD_ACK_OK` indicating success
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'''
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return unpack('HHHH', self.__data_recv[:8])[0]
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@property
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def __sesion_id(self):
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if not self.__data_recv:
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return 0
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return unpack('HHHH', self.__data_recv[:8])[2]
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@property
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def __reply_id(self):
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if not self.__data_recv:
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return const.USHRT_MAX - 1
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return unpack('HHHH', self.__data_recv[:8])[3]
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def connect(self):
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'''
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connect to device
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'''
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command = const.CMD_CONNECT
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cmd_response = self.__send_command(command)
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cmd_response['data'] = ''
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if cmd_response.get('status'):
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self.is_connect = True
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cmd_response['message'] = 'connected'
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return cmd_response
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else:
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return cmd_response
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def disconnect(self):
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'''
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diconnect from connected device
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'''
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command = const.CMD_EXIT
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cmd_response = self.__send_command(command)
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cmd_response['data'] = ''
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if cmd_response.get('status'):
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cmd_response['message'] = 'disconnected'
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return cmd_response
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else:
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return cmd_response
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def get_firmware_version(self):
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'''
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get firmware version name
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'''
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command = const.CMD_GET_VERSION
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cmd_response = self.__send_command(command, response_size=1024)
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if cmd_response.get('status'):
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cmd_response['data'] = cmd_response.get('data')[8:].strip('\x00|\x01\x10x')
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return cmd_response
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else:
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cmd_response['data'] = ''
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return cmd_response
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def restart(self):
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'''
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restart connected device
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'''
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command = const.CMD_RESTART
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cmd_response = self.__send_command(command)
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cmd_response['data'] = ''
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if cmd_response.get('status'):
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cmd_response['message'] = 'device restarted'
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return cmd_response
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else:
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return cmd_response
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def power_off(self):
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'''
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shutdown connected device
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'''
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command = const.CMD_POWEROFF
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cmd_response = self.__send_command(command)
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cmd_response['data'] = ''
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if cmd_response.get('status'):
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cmd_response['message'] = 'device turning off'
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return cmd_response
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else:
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return cmd_response
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def disable_device(self):
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'''
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disable (lock) connected device, make sure no activity when process run
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'''
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command = const.CMD_DISABLEDEVICE
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cmd_response = self.__send_command(command)
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cmd_response['data'] = ''
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if cmd_response.get('status'):
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cmd_response['message'] = 'device disabled'
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return cmd_response
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else:
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return cmd_response
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def enable_device(self):
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'''
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re-enable connected device
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'''
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command = const.CMD_ENABLEDEVICE
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cmd_response = self.__send_command(command)
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cmd_response['data'] = ''
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if cmd_response.get('status'):
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cmd_response['message'] = 'device enabled'
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return cmd_response
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else:
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return cmd_response
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def test_voice(self):
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'''
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play test voice
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'''
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command = const.CMD_TESTVOICE
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cmd_response = self.__send_command(command)
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cmd_response['data'] = ''
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if cmd_response.get('status'):
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cmd_response['message'] = 'voice detected'
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return cmd_response
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else:
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return cmd_response
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def set_user(self, uid, name, privilege, password='', group_id='', user_id=''):
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'''
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create or update user by uid
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'''
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command = const.CMD_USER_WRQ
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uid = chr(uid % 256) + chr(uid >> 8)
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if privilege not in [const.USER_DEFAULT, const.USER_ADMIN]:
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privilege = const.USER_DEFAULT
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privilege = chr(privilege)
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command_string = pack('2sc8s28sc7sx24s', uid, privilege, password, name, chr(0), group_id, user_id)
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cmd_response = self.__send_command(command, command_string, 1024)
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cmd_response['data'] = ''
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if cmd_response.get('status'):
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cmd_response['message'] = 'new user created'
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return cmd_response
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else:
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return cmd_response
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def __get_size_user(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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response = self.__response
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if response == const.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 0
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def get_users(self):
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'''
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get all users
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'''
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command = const.CMD_USERTEMP_RRQ
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cmd_response = self.__send_command(command=command, response_size=1024)
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if cmd_response:
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bytes = self.__get_size_user()
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userdata = []
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if bytes:
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while bytes > 0:
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data_recv = self.__sock.recv(1032)
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userdata.append(data_recv)
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bytes -= 1024
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data_recv = self.__sock.recv(8)
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response = unpack('HHHH', data_recv[:8])[0]
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if response == const.CMD_ACK_OK:
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users = []
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if len(userdata):
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# The first 4 bytes don't seem to be related to the user
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for x in xrange(len(userdata)):
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if x > 0:
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userdata[x] = userdata[x][8:]
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userdata = ''.join(userdata)
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userdata = userdata[11:]
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while len(userdata) >= 72:
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uid, privilege, password, name, sparator, group_id, user_id = unpack( '2s2s8s28sc7sx23s', userdata.ljust(72)[:72])
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u1 = int( uid[0].encode("hex"), 16)
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u2 = int( uid[1].encode("hex"), 16)
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uid = u2 + (u1*256)
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name = unicode(name.strip('\x00|\x01\x10x'), errors='ignore')
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privilege = int(privilege.encode("hex"), 16)
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password = unicode(password.strip('\x00|\x01\x10x'), errors='ignore')
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group_id = unicode(group_id.strip('\x00|\x01\x10x'), errors='ignore')
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user_id = unicode(user_id.strip('\x00|\x01\x10x'), errors='ignore')
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user = User(uid, name, privilege, password, group_id, user_id)
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users.append(user)
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userdata = userdata[72:]
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cmd_response['status'] = True
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cmd_response['code'] = response
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cmd_response['message'] = 'success'
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cmd_response['data'] = users
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return cmd_response
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else:
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return {
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'status': False,
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'code': response,
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'message': 'failed',
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'data': ''
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}
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else:
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cmd_response['data'] = ''
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return cmd_response
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def cancel_capture(self):
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'''
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cancel capturing finger
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'''
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command = const.CMD_CANCELCAPTURE
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cmd_response = self.__send_command(command=command)
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print cmd_response
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def verify_user(self):
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'''
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verify finger
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'''
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command = const.CMD_STARTVERIFY
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# uid = chr(uid % 256) + chr(uid >> 8)
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cmd_response = self.__send_command(command=command)
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print cmd_response
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def enroll_user(self, uid):
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'''
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start enroll user
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'''
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command = const.CMD_STARTENROLL
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uid = chr(uid % 256) + chr(uid >> 8)
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command_string = pack('2s', uid)
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cmd_response = self.__send_command(command=command, command_string=command_string)
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print cmd_response
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def clear_user(self):
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'''
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Not implemented yet
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'''
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pass
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def get_attendance(self):
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'''
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Not implemented yet
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'''
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pass
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def clear_attendance(self):
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'''
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Not implemented yet
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'''
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pass
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