public override void Run(IDataAdapter adapter, Logger logger)
{
DataFrame frame = adapter.Read();
while (frame != null)
{
try
{
DNSPacket packet = DNSPacket.FromArray(frame.ToArray());
List <DNSPacket.DNSRRBase> aRecords = new List <DNSPacket.DNSRRBase>();
foreach (DNSPacket.DNSQuestion question in packet.Questions)
{
if ((question.QClass == DNSPacket.DNSClass.IN) || (question.QClass == DNSPacket.DNSClass.AnyClass))
{
if ((question.QType == DNSPacket.DNSType.A) || (question.QType == DNSPacket.DNSType.AllRecords))
{
if (Config.ResponseAddress != IPAddress.Any)
{
DNSPacket.ADNSRR addr = new DNSPacket.ADNSRR();
addr.Address = new IPAddress(Config.ResponseAddress.GetAddressBytes());
addr.TimeToLive = Config.TimeToLive;
addr.Type = DNSPacket.DNSType.A;
addr.Class = DNSPacket.DNSClass.IN;
addr.Name = question.QName;
aRecords.Add(addr);
}
}
if ((question.QType == DNSPacket.DNSType.AAAA) || (question.QType == DNSPacket.DNSType.AllRecords))
{
if (Config.ResponseAddress6 != IPAddress.IPv6Any)
{
DNSPacket.AAAADNSRR addr = new DNSPacket.AAAADNSRR();
addr.Address = new IPAddress(Config.ResponseAddress6.GetAddressBytes());
addr.TimeToLive = Config.TimeToLive;
addr.Type = DNSPacket.DNSType.AAAA;
addr.Class = DNSPacket.DNSClass.IN;
addr.Name = question.QName;
aRecords.Add(addr);
}
}
if ((question.QType == DNSPacket.DNSType.PTR) || (question.QType == DNSPacket.DNSType.AllRecords))
{
if (!String.IsNullOrEmpty(Config.ReverseDns) && ((question.QName.EndsWith(".in-addr.arpa.") || question.QName.EndsWith(".ip6.arpa."))))
{
DNSPacket.PTRDNSRR addr = new DNSPacket.PTRDNSRR();
addr.Ptr = Config.ReverseDns;
addr.Type = DNSPacket.DNSType.PTR;
addr.Class = DNSPacket.DNSClass.IN;
addr.Name = question.QName;
aRecords.Add(addr);
}
}
}
}
packet.Query = true;
packet.RecursionAvailable = true;
if (aRecords.Count > 0)
{
packet.Answers = aRecords.ToArray();
packet.AuthoritiveAnswer = true;
packet.ResponseCode = DNSPacket.DNSRCode.NoError;
}
else
{
packet.ResponseCode = DNSPacket.DNSRCode.Refused;
}
adapter.Write(new DataFrame(packet.ToArray()));
}
catch (ArgumentException ex)
{
logger.LogException(ex);
}
frame = adapter.Read();
}
}
/// <summary>
///
/// </summary>
/// <param name="data"></param>
/// <param name="root"></param>
/// <param name="logger"></param>
public void FromArray(byte[] data, DataKey root, Logger logger)
{
DNSPacket packet = DNSPacket.FromArray(data);
packet.ToDataKey(root);
}