protected DhcpOption(DhcpOptionCode code, Stream s)
{
_code = code;
int len = s.ReadByte();
if (len < 0)
{
throw new EndOfStreamException();
}
_value = s.ReadBytes(len);
}
public void AddOption(DhcpOptionCode opCode, byte[] data)
{
_bytes.Add((byte)opCode);
_bytes.Add((byte)data.Length);
_bytes.AddRange(data);
}
public void AddOption(DhcpOptionCode opCode, byte data)
{
AddOption(opCode, new[] { data });
}
public void AddOption(DhcpOptionCode opCode, IPAddress data)
{
AddOption(opCode, data.GetAddressBytes());
}
public void AddOption(DhcpOptionCode opCode, DhcpMessageType messageType)
{
AddOption(opCode, (byte)messageType);
}
public void AddOption(DhcpOptionCode opCode, int data, bool isReversed)
{
var bytes = BitConverter.GetBytes(data);
AddOption(opCode, isReversed ? bytes.ReverseArray() : bytes);
}
public DhcpOption(DhcpOptionCode code, byte[] value)
{
this.Code = code;
this.Value = value;
}
public static DhcpOption Parse(Stream s)
{
int code = s.ReadByte();
if (code < 0)
{
throw new EndOfStreamException();
}
DhcpOptionCode optionCode = (DhcpOptionCode)code;
switch (optionCode)
{
case DhcpOptionCode.SubnetMask:
return(new SubnetMaskOption(s));
case DhcpOptionCode.Router:
return(new RouterOption(s));
case DhcpOptionCode.DomainNameServer:
return(new DomainNameServerOption(s));
case DhcpOptionCode.HostName:
return(new HostNameOption(s));
case DhcpOptionCode.DomainName:
return(new DomainNameOption(s));
case DhcpOptionCode.BroadcastAddress:
return(new BroadcastAddressOption(s));
case DhcpOptionCode.VendorSpecificInformation:
return(new VendorSpecificInformationOption(s));
case DhcpOptionCode.NetBiosOverTcpIpNameServer:
return(new NetBiosNameServerOption(s));
case DhcpOptionCode.RequestedIpAddress:
return(new RequestedIpAddressOption(s));
case DhcpOptionCode.IpAddressLeaseTime:
return(new IpAddressLeaseTimeOption(s));
case DhcpOptionCode.OptionOverload:
return(new OptionOverloadOption(s));
case DhcpOptionCode.DhcpMessageType:
return(new DhcpMessageTypeOption(s));
case DhcpOptionCode.ServerIdentifier:
return(new ServerIdentifierOption(s));
case DhcpOptionCode.ParameterRequestList:
return(new ParameterRequestListOption(s));
case DhcpOptionCode.MaximumDhcpMessageSize:
return(new MaximumDhcpMessageSizeOption(s));
case DhcpOptionCode.RenewalTimeValue:
return(new RenewalTimeValueOption(s));
case DhcpOptionCode.RebindingTimeValue:
return(new RebindingTimeValueOption(s));
case DhcpOptionCode.VendorClassIdentifier:
return(new VendorClassIdentifierOption(s));
case DhcpOptionCode.ClientIdentifier:
return(new ClientIdentifierOption(s));
case DhcpOptionCode.ClientFullyQualifiedDomainName:
return(new ClientFullyQualifiedDomainNameOption(s));
case DhcpOptionCode.ClasslessStaticRoute:
return(new ClasslessStaticRouteOption(s));
case DhcpOptionCode.Pad:
case DhcpOptionCode.End:
return(new DhcpOption(optionCode));
default:
//unknown option
return(new DhcpOption(optionCode, s));
}
}
protected DhcpOption(DhcpOptionCode code)
{
_code = code;
}
