def ParseDHCPCode(data):
PTid = data[4:8]
Seconds = data[8:10]
CurrentIP = socket.inet_ntoa(data[12:16])
RequestedIP = socket.inet_ntoa(data[16:20])
MacAddr = data[28:34]
MacAddrStr = ':'.join('%02x' % ord(m) for m in MacAddr).upper()
OpCode = data[242:243]
RequestIP = data[245:249]
# DHCP Inform
if OpCode == "\x08":
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=socket.inet_aton(CurrentIP))
Packet = DHCPInformACK(Tid=PTid, ClientMac=MacAddr, ActualClientIP=socket.inet_aton(CurrentIP), \
GiveClientIP=socket.inet_aton("0.0.0.0"), \
NextServerIP=socket.inet_aton("0.0.0.0"), \
RelayAgentIP=socket.inet_aton("0.0.0.0"), \
ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (CurrentIP, 68))
return 'Acknowledged DHCP Inform for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))
# DHCP Request
if OpCode == "\x03" and Respond_To_Requests:
IP = FindIP(data)
if IP:
IPConv = socket.inet_ntoa(IP)
if RespondToThisIP(IPConv):
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=IP)
Packet = DHCPACK(Tid=PTid, ClientMac=MacAddr, GiveClientIP=IP, ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (IPConv, 68))
return 'Acknowledged DHCP Request for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))
# DHCP Discover
if OpCode == "\x01" and Respond_To_Requests:
IP = FindIP(data)
if IP:
IPConv = socket.inet_ntoa(IP)
if RespondToThisIP(IPConv):
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=IP)
Packet = DHCPACK(Tid=PTid, ClientMac=MacAddr, GiveClientIP=IP, DHCPOpCode="\x02", ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (IPConv, 0))
return 'Acknowledged DHCP Discover for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))
def ParseDHCPCode(data):
PTid = data[4:8]
Seconds = data[8:10]
CurrentIP = socket.inet_ntoa(data[12:16])
RequestedIP = socket.inet_ntoa(data[16:20])
MacAddr = data[28:34]
MacAddrStr = ':'.join('%02x' % ord(m) for m in MacAddr).upper()
OpCode = data[242:243]
RequestIP = data[245:249]
# DHCP Inform
if OpCode == "\x08":
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=socket.inet_aton(CurrentIP))
Packet = DHCPInformACK(Tid=PTid, ClientMac=MacAddr, ActualClientIP=socket.inet_aton(CurrentIP),
GiveClientIP=socket.inet_aton("0.0.0.0"),
NextServerIP=socket.inet_aton("0.0.0.0"),
RelayAgentIP=socket.inet_aton("0.0.0.0"),
ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (CurrentIP, 68))
return 'Acknowledged DHCP Inform for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))
elif OpCode == "\x03" and Respond_To_Requests: # DHCP Request
IP = FindIP(data)
if IP:
IPConv = socket.inet_ntoa(IP)
if RespondToThisIP(IPConv):
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=IP)
Packet = DHCPACK(Tid=PTid, ClientMac=MacAddr, GiveClientIP=IP, ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (IPConv, 68))
return 'Acknowledged DHCP Request for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))
elif OpCode == "\x01" and Respond_To_Requests: # DHCP Discover
IP = FindIP(data)
if IP:
IPConv = socket.inet_ntoa(IP)
if RespondToThisIP(IPConv):
IP_Header = IPHead(SrcIP = socket.inet_aton(SpoofIP(Spoof)), DstIP=IP)
Packet = DHCPACK(Tid=PTid, ClientMac=MacAddr, GiveClientIP=IP, DHCPOpCode="\x02", ElapsedSec=Seconds)
Packet.calculate()
Buffer = UDP(Data = Packet)
Buffer.calculate()
SendDHCP(str(IP_Header)+str(Buffer), (IPConv, 0))
return 'Acknowledged DHCP Discover for IP: %s, Req IP: %s, MAC: %s Tid: %s' % (CurrentIP, RequestedIP, MacAddrStr, '0x'+PTid.encode('hex'))