public DhcpTestPacket(
string hexBytes,
uint transactionId,
DhcpOperation operation,
ClientHardwareAddressType clientHardwareAddressType,
byte[] clientHardwareAddressBytes,
uint hops,
uint secs,
bool isBroadcast,
IPAddress clientIp,
IPAddress yourIp,
IPAddress serverIp,
IPAddress gatewayIp,
string serverName,
string bootFile,
IReadOnlyList <IDhcpOption> options)
{
Bytes = hexBytes.AsHexBytes();
TransactionId = transactionId;
Operation = operation;
ClientHardwareAddressType = clientHardwareAddressType;
ClientHardwareAddressBytes = clientHardwareAddressBytes;
Hops = hops;
Secs = secs;
IsBroadcast = isBroadcast;
ClientIp = clientIp;
YourIp = yourIp;
ServerIp = serverIp;
GatewayIp = gatewayIp;
ServerName = serverName;
BootFile = bootFile;
Options = options;
}
internal DhcpPacket(
uint transactionId,
DhcpOperation operation,
ClientHardwareAddress clientHardwareAddress,
uint hops,
ushort secs,
bool isBroadcast,
IPAddress clientIp,
IPAddress yourIp,
IPAddress serverIp,
IPAddress gatewayIp,
string serverName,
string bootFile,
IReadOnlyList <IDhcpOption> options)
{
_options = options;
Secs = secs;
IsBroadcast = isBroadcast;
ClientIp = clientIp;
YourIp = yourIp;
ServerIp = serverIp;
GatewayIp = gatewayIp;
ServerName = serverName;
BootFile = bootFile;
TransactionId = transactionId;
Operation = operation;
ClientHardwareAddress = clientHardwareAddress;
Hops = hops;
}
public DhcpMessage(byte[] data)
{
var offset = 0;
_mOperation = (DhcpOperation) data[offset++];
_mHardware = (HardwareType) data[offset++];
HardwareAddressLength = data[offset++];
Hops = data[offset++];
SessionId = BitConverter.ToInt32(data, offset);
offset += 4;
var secondsElapsed = new byte[2];
Array.Copy(data, offset, secondsElapsed, 0, 2);
SecondsElapsed = BitConverter.ToUInt16(ReverseByteOrder(secondsElapsed), 0);
offset += 2;
Flags = BitConverter.ToUInt16(data, offset);
offset += 2;
Array.Copy(data, offset, _mClientAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, _mAssignedAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, _mNextServerAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, _mRelayAgentAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, _mClientHardwareAddress, 0, 16);
offset += 16;
Array.Copy(data, offset, _mServerHostName, 0, 64);
offset += 64;
Array.Copy(data, offset, _mBootFileName, 0, 128);
offset += 128;
//Array.Copy(data, offset, this.m_VendorSpecificInformation, 0, 64);
//offset += 64;
//offset += 192; // Skip server host name and boot file
if (offset + 4 < data.Length &&
(BitConverter.ToUInt32(data, offset) == DhcpOptionsMagicNumber ||
BitConverter.ToUInt32(data, offset) == WinDhcpOptionsMagicNumber))
{
offset += 4;
var end = false;
while (!end && offset < data.Length)
{
var option = (DhcpOption) data[offset];
offset++;
int optionLen;
switch (option)
{
case DhcpOption.Pad:
continue;
case DhcpOption.End:
end = true;
continue;
default:
optionLen = data[offset];
offset++;
break;
}
var optionData = new byte[optionLen];
Array.Copy(data, offset, optionData, 0, optionLen);
offset += optionLen;
_mOptions.Add(option, optionData);
_mOptionDataSize += optionLen;
}
}
}
internal DhcpPacketBuilder WithOperation(DhcpOperation operation)
{
_operation = operation;
return(this);
}
public DhcpMessage(Byte[] data)
{
Int32 offset = 0;
this.m_Operation = (DhcpOperation)data[offset++];
this.m_Hardware = (HardwareType)data[offset++];
this.m_HardwareAddressLength = data[offset++];
this.m_Hops = data[offset++];
this.m_SessionId = BitConverter.ToInt32(data, offset);
offset += 4;
Byte[] secondsElapsed = new Byte[2];
Array.Copy(data, offset, secondsElapsed, 0, 2);
this.m_SecondsElapsed = BitConverter.ToUInt16(ReverseByteOrder(secondsElapsed), 0);
offset += 2;
this.m_Flags = BitConverter.ToUInt16(data, offset);
offset += 2;
Array.Copy(data, offset, this.m_ClientAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, this.m_AssignedAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, this.m_NextServerAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, this.m_RelayAgentAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, this.m_ClientHardwareAddress, 0, 16);
offset += 16;
offset += 192; // Skip server host name and boot file
if (offset + 4 < data.Length &&
(BitConverter.ToUInt32(data, offset) == DhcpOptionsMagicNumber || BitConverter.ToUInt32(data, offset) == WinDhcpOptionsMagicNumber))
{
offset += 4;
Boolean end = false;
while (!end && offset < data.Length)
{
DhcpOption option = (DhcpOption)data[offset];
offset++;
Int32 optionLen;
switch (option)
{
case DhcpOption.Pad:
continue;
case DhcpOption.End:
end = true;
continue;
default:
optionLen = (Int32)data[offset];
offset++;
break;
}
Byte[] optionData = new Byte[optionLen];
Array.Copy(data, offset, optionData, 0, optionLen);
offset += optionLen;
this.m_Options.Add(option, optionData);
this.m_OptionDataSize += optionLen;
}
}
}
public DhcpMessage(Byte[] data)
{
Int32 offset = 0;
this.m_Operation = (DhcpOperation)data[offset++];
this.m_Hardware = (HardwareType)data[offset++];
this.m_HardwareAddressLength = data[offset++];
this.m_Hops = data[offset++];
this.m_SessionId = BitConverter.ToInt32(data, offset);
offset += 4;
Byte[] secondsElapsed = new Byte[2];
Array.Copy(data, offset, secondsElapsed, 0, 2);
this.m_SecondsElapsed = BitConverter.ToUInt16(ReverseByteOrder(secondsElapsed), 0);
offset += 2;
this.m_Flags = BitConverter.ToUInt16(data, offset);
offset += 2;
Array.Copy(data, offset, this.m_ClientAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, this.m_AssignedAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, this.m_NextServerAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, this.m_RelayAgentAddress, 0, 4);
offset += 4;
Array.Copy(data, offset, this.m_ClientHardwareAddress, 0, 16);
offset += 16;
offset += 192; // Skip server host name and boot file
if (offset + 4 < data.Length &&
(BitConverter.ToUInt32(data, offset) == DhcpOptionsMagicNumber || BitConverter.ToUInt32(data, offset) == WinDhcpOptionsMagicNumber))
{
offset += 4;
Boolean end = false;
while (!end && offset < data.Length)
{
DhcpOption option = (DhcpOption)data[offset];
offset++;
Int32 optionLen;
switch (option)
{
case DhcpOption.Pad:
continue;
case DhcpOption.End:
end = true;
continue;
default:
optionLen = (Int32)data[offset];
offset++;
break;
}
Byte[] optionData = new Byte[optionLen];
Array.Copy(data, offset, optionData, 0, optionLen);
offset += optionLen;
this.m_Options.Add(option, optionData);
this.m_OptionDataSize += optionLen;
}
}
}
