def discovery_acknowledgement():
operation_code = 2
hardware_type = 1
hardware_address_length = 6
transaction_identifier = 1200
client_IP_address = '0.0.0.0'
your_IP_address = '192.168.20.20'
server_IP_address = '192.168.20.1'
gateway_IP_address = '0.0.0.0'
client_hardware_address= 'fe:1d:20:1c:f6:8d'
DHCACK = dhcp_message(operation_code,
hardware_type,
hardware_address_length,
transaction_identifier,
client_IP_address,
your_IP_address,
server_IP_address,
gateway_IP_address,
client_hardware_address
)
test = socket.inet_ntoa(DHCACK[12:16])
print('Sanity Check (1): ', test == '0.0.0.0')
test = socket.inet_ntoa(DHCACK[16:20])
print('Sanity Check (2): ', test == '192.168.20.20')
test = socket.inet_ntoa(DHCACK[20:24])
print('Sanity Check (3): ', test == '192.168.20.1')
def dhcp_test():
dhcp_msg = dhcp_message(operation_code=1,
hardware_type=1,
hardware_address_length=6,
transaction_identifier=1206,
client_IP_address='0.0.0.0',
your_IP_address='0.0.0.0',
server_IP_address='0.0.0.0',
gateway_IP_address='0.0.0.0',
client_hardware_address='fe:1d:20:1c:f6:8d')
client_hardware_address = 'fe:1d:20:1c:f6:8d'
print('dhcp message length: {0} bytes'.format(len(dhcp_msg)))
_mac = []
for i in range(-16, -10):
_mac.append(hex(struct.unpack('B', dhcp_msg[i:i + 1])[0]))
_mac = ':'.join(_mac).replace('0x', '')
print('HW MAC check (1): ', client_hardware_address == _mac)
def discovery_check():
operation_code = 1
hardware_type = 1
hardware_address_length = 6
transaction_identifier = 1200
client_IP_address = '0.0.0.0'
your_IP_address = '0.0.0.0'
server_IP_address = '0.0.0.0'
gateway_IP_address = '0.0.0.0'
client_hardware_address = 'fe:1d:20:1c:f6:8d'
DHCPDISCOVER = dhcp_message(operation_code, hardware_type,
hardware_address_length,
transaction_identifier, client_IP_address,
your_IP_address, server_IP_address,
gateway_IP_address, client_hardware_address)
test_HLen = struct.unpack('B', DHCPDISCOVER[1:2])[0]
print('Sanity Check: ', test_HLen == hardware_type == 1)