private void FillOptions(DhcpFormat request, DhcpFormat response)
{
SortedList requestOptions = request.GetOptions();
response.AddOption(DhcpServerID.Create(ServerAddress));
response.AddOption(DhcpRenewalTime.Create(RenewalTime));
response.AddOption(DhcpRebindingTime.Create(RebindingTime));
foreach (IDhcpOption option in requestOptions.Values)
{
byte optionCode = option.OptionCode;
Console.WriteLine("({0}) {1}",
optionCode,
DhcpOptionParser.GetOptionName(optionCode));
}
DhcpMultiByteOption parameters =
requestOptions[DhcpParameterRequest.OptionCode]
as DhcpMultiByteOption;
if (parameters == null)
{
return;
}
foreach (byte parameter in parameters.Values)
{
switch (parameter)
{
case DhcpSubnetMask.OptionCode:
response.AddOption(DhcpSubnetMask.Create(NetMask));
break;
case DhcpDomainName.OptionCode:
response.AddOption(
DhcpDomainName.Create(DomainName.ToCharArray())
);
break;
case DhcpRouter.OptionCode:
response.AddOption(DhcpRouter.Create(Routers));
break;
case DhcpDomainNameServer.OptionCode:
response.AddOption(
DhcpDomainNameServer.Create(DnsServers)
);
break;
}
}
}
public DhcpMessage ToMessage(DhcpPacket packet)
{
DhcpOptionParser parser = new DhcpOptionParser();
DhcpMessage result = new DhcpMessage
{
OperationCode = (DhcpOperation)packet.Op,
HardwareType = (HardwareType)packet.HType,
HardwareAddressLength = packet.HLen,
Hops = packet.Hops,
TransactionId = BitConverter.ToInt32(packet.XID.Reverse().ToArray(), 0),
SecondsElapsed = BitConverter.ToUInt16(packet.Secs, 0),
Flags = BitConverter.ToUInt16(packet.Flags, 0),
ClientIPAddress = new IPAddress(packet.CIAddr),
YourIPAddress = new IPAddress(packet.YIAddr),
ServerIPAddress = new IPAddress(packet.SIAddr),
GatewayIPAddress = new IPAddress(packet.GIAddr),
ClientHardwareAddress = new PhysicalAddress(packet.CHAddr.Take(packet.HLen).ToArray()),
File = packet.File,
Cookie = packet.Cookie,
Options = parser.GetOptions(packet.Options)
};
return(result);
}
