public void Start()
{
GetProcessors();
server_ = new DnsServer(IPAddress.Any, state_.Config.Dns.UdpListeners, state_.Config.Dns.TcpListeners, ProcessDnsQuery);
server_.Start();
}
public DnsServer(IDictionary <string, DomainMapping> mappingLookup)
{
this.mappingLookup = mappingLookup;
server = new ARSoft.Tools.Net.Dns.DnsServer(IPAddress.Any, 10, 10, ProcessQuery);
server.ExceptionThrown += (o, e) =>
{
Console.WriteLine("DnsServer threw an exception " + o + " " + e);
};
}
public DnsServer(IDictionary<string, DomainMapping> mappingLookup)
{
this.mappingLookup = mappingLookup;
server = new ARSoft.Tools.Net.Dns.DnsServer(IPAddress.Any, 10, 10, ProcessQuery);
server.ExceptionThrown += (o, e) =>
{
Console.WriteLine("DnsServer threw an exception " + o + " " + e);
};
}
static void Main(string[] args)
{
using (DnsServer server = new DnsServer(IPAddress.Any, 10, 10, ProcessQuery))
{
server.Start();
Console.WriteLine("Press any key to stop server");
Console.ReadLine();
}
}
public DnsServer(Database.Database db, int udpPort = 53, int tcpPort = 53, List <IPAddress> fallbackIpAddress = null)
{
this.db = db;
if (fallbackIpAddress != null)
{
dnsFallback = new DnsClient(fallbackIpAddress, 2000);
}
dnsServer = new ARSoft.Tools.Net.Dns.DnsServer(udpPort, tcpPort);
dnsServer.QueryReceived += Server_QueryReceived;
}
public static void Main(string[] args)
{
new Core.DataAccess.SQL.ModelMappings().Create();
var kernel = NinjectCommon.CreateKernel();
var dnsQueryHandler = kernel.Get<IDnsQueryHandler>();
using (var server = new DnsServer(IPAddress.Any, 10, 10, dnsQueryHandler.HandleQuery ))
{
server.Start();
Console.WriteLine("Press enter to stop server");
Console.ReadLine();
}
}
public void StartServer(int?listnerPort = null)
{
var ipEndPoint = new IPEndPoint(IPAddress.Any, listnerPort ?? DefaultDnsPort);
_server = new ARSoft.Tools.Net.Dns.DnsServer(ipEndPoint, 10000, 10000);
_server.ClientConnected += OnClientConnected;
_server.QueryReceived += OnQueryReceived;
_server.Start();
_logger.LogInformation("Server is started");
}
protected void StartDnsServer()
{
try
{
DnsServer server = new DnsServer(System.Net.IPAddress.Any, 10, 10, OnDnsQuery);
this.AddListItem("Started DNS proxy...");
server.ExceptionThrown += DnsServer_ExceptionThrown;
server.Start();
}
catch (Exception e)
{
this.AddListItem(String.Format("ERROR STARTING DNS SERVER: {0}", e.Message));
}
}
static void Main(string[] args)
{
using (DnsServer server = new DnsServer(IPAddress.Any, 4, 1))
{
server.ClientConnected += OnClientConnected;
server.QueryReceived += OnQueryReceived;
server.Start();
Application.Run();
//Console.WriteLine("Press any key to stop server");
//Console.ReadLine();
}
}
public static void Main(string[] args)
{
Console.WriteLine("-------------------------------------------------");
Console.WriteLine("DnsServerTest");
Console.WriteLine("-------------------------------------------------");
domain = System.Configuration.ConfigurationManager.AppSettings["Domain"];
if (domain == null)
{
Console.WriteLine(string.Format("AppSetting \"Domain\" invalid", domain));
Console.WriteLine("End");
Console.ReadKey();
return;
}
int.TryParse(System.Configuration.ConfigurationManager.AppSettings["TtlSeconds"], out ttlSeconds);
if (ttlSeconds <= 0)
{
Console.WriteLine(string.Format("AppSetting \"TtlSeconds\" invalid", domain));
Console.WriteLine("End");
Console.ReadKey();
return;
}
Console.WriteLine(string.Format("Domain: {0}", domain));
Console.WriteLine(string.Format("TTL: {0} seconds", ttlSeconds.ToString("#,##0")));
Console.WriteLine();
using (DnsServer server = new DnsServer(10, 10))
{
server.QueryReceived += OnQueryReceived;
server.Start();
Console.WriteLine("Service started");
Console.WriteLine();
Console.WriteLine("\r\nPress any key to stop server");
Console.ReadLine();
return;
}
}
private ReturnCode ValidateTSig(byte[] resultData, DnsServer.SelectTsigKey tsigKeySelector, byte[] originalMac)
{
byte[] keyData;
if ((TSigOptions.Algorithm == TSigAlgorithm.Unknown) || (tsigKeySelector == null) || ((keyData = tsigKeySelector(TSigOptions.Algorithm, TSigOptions.Name)) == null))
{
return ReturnCode.BadKey;
}
else if (((TSigOptions.TimeSigned - TSigOptions.Fudge) > DateTime.Now) || ((TSigOptions.TimeSigned + TSigOptions.Fudge) < DateTime.Now))
{
return ReturnCode.BadTime;
}
else if ((TSigOptions.OriginalMac == null) || (TSigOptions.OriginalMac.Length == 0))
{
return ReturnCode.BadSig;
}
else
{
TSigOptions.KeyData = keyData;
// maxLength for the buffer to validate: Original (unsigned) dns message and encoded TSigOptions
// because of compression of keyname, the size of the signed message can not be used
int maxLength = TSigOptions.StartPosition + TSigOptions.MaximumLength;
if (originalMac != null)
{
// add length of mac on responses. MacSize not neccessary, this field is allready included in the size of the tsig options
maxLength += originalMac.Length;
}
byte[] validationBuffer = new byte[maxLength];
int currentPosition = 0;
// original mac if neccessary
if ((originalMac != null) && (originalMac.Length > 0))
{
EncodeUShort(validationBuffer, ref currentPosition, (ushort) originalMac.Length);
EncodeByteArray(validationBuffer, ref currentPosition, originalMac);
}
// original unsiged buffer
Buffer.BlockCopy(resultData, 0, validationBuffer, currentPosition, TSigOptions.StartPosition);
// update original transaction id and ar count in message
EncodeUShort(validationBuffer, currentPosition, TSigOptions.OriginalID);
EncodeUShort(validationBuffer, currentPosition + 10, (ushort) _additionalRecords.Count);
currentPosition += TSigOptions.StartPosition;
// TSig Variables
EncodeDomainName(validationBuffer, 0, ref currentPosition, TSigOptions.Name, false, null);
EncodeUShort(validationBuffer, ref currentPosition, (ushort) TSigOptions.RecordClass);
EncodeInt(validationBuffer, ref currentPosition, (ushort) TSigOptions.TimeToLive);
EncodeDomainName(validationBuffer, 0, ref currentPosition, TSigAlgorithmHelper.GetDomainName(TSigOptions.Algorithm), false, null);
TSigRecord.EncodeDateTime(validationBuffer, ref currentPosition, TSigOptions.TimeSigned);
EncodeUShort(validationBuffer, ref currentPosition, (ushort) TSigOptions.Fudge.TotalSeconds);
EncodeUShort(validationBuffer, ref currentPosition, (ushort) TSigOptions.Error);
EncodeUShort(validationBuffer, ref currentPosition, (ushort) TSigOptions.OtherData.Length);
EncodeByteArray(validationBuffer, ref currentPosition, TSigOptions.OtherData);
// Validate MAC
KeyedHashAlgorithm hashAlgorithm = TSigAlgorithmHelper.GetHashAlgorithm(TSigOptions.Algorithm);
hashAlgorithm.Key = keyData;
return (hashAlgorithm.ComputeHash(validationBuffer, 0, currentPosition).SequenceEqual(TSigOptions.OriginalMac)) ? ReturnCode.NoError : ReturnCode.BadSig;
}
}
internal void Parse(byte[] resultData, bool isRequest, DnsServer.SelectTsigKey tsigKeySelector, byte[] originalMac)
{
int currentPosition = 0;
TransactionID = ParseUShort(resultData, ref currentPosition);
_flags = ParseUShort(resultData, ref currentPosition);
int questionCount = ParseUShort(resultData, ref currentPosition);
int answerRecordCount = ParseUShort(resultData, ref currentPosition);
int authorityRecordCount = ParseUShort(resultData, ref currentPosition);
int additionalRecordCount = ParseUShort(resultData, ref currentPosition);
ParseQuestions(resultData, ref currentPosition, questionCount);
ParseSection(resultData, ref currentPosition, _answerRecords, answerRecordCount);
ParseSection(resultData, ref currentPosition, _authorityRecords, authorityRecordCount);
ParseSection(resultData, ref currentPosition, _additionalRecords, additionalRecordCount);
if (_additionalRecords.Count > 0)
{
int tSigPos = _additionalRecords.FindIndex(record => (record.RecordType == RecordType.TSig));
if (tSigPos == (_additionalRecords.Count - 1))
{
TSigOptions = (TSigRecord) _additionalRecords[tSigPos];
_additionalRecords.RemoveAt(tSigPos);
TSigOptions.ValidationResult = ValidateTSig(resultData, tsigKeySelector, originalMac);
}
}
FinishParsing();
}
public static DnsMessageBase Create(byte[] resultData, bool isRequest, DnsServer.SelectTsigKey tsigKeySelector, byte[] originalMac)
{
int flagPosition = 2;
ushort flags = ParseUShort(resultData, ref flagPosition);
DnsMessageBase res;
switch ((OperationCode) ((flags & 0x7800) >> 11))
{
case OperationCode.Update:
res = new DnsUpdateMessage();
break;
default:
res = new DnsMessage();
break;
}
res.Parse(resultData, isRequest, tsigKeySelector, originalMac);
return res;
}
public DnsListener(StatefulServiceContext context)
{
_server = new ARSoft.Tools.Net.Dns.DnsServer(10, 10);
_server.QueryReceived += _server_QueryReceived;
client = new DnsClient(System.Net.IPAddress.Parse("114.114.114.114"), 5);
}
/// <summary>
/// Attempt to start the server.
/// </summary>
/// <remarks>Will only start when 'start-enabled' is true.</remarks>
/// <returns>True on success, false if the server is not enabled.</returns>
public bool Start()
{
if (_dnsServer != null)
{
throw new Exception("The server is already running.");
}
if (!Configuration.ServerEnabled)
{
// Server not enabled
return false;
}
_dnsServer = new DnsServer(Configuration.ServerBindIP, 32, 32, OnQuery);
Logger.Log(LogSeverity.Info, "Starting the TorDNS server. Bind IP: {0}", Configuration.ServerBindIP.ToString());
RefreshConfiguration(true);
_dnsServer.Start();
IsRunning = true;
return true;
}
private static void BindListener(string ipAddressForBinding)
{
IPAddress ip;
if (!IPAddress.TryParse(ipAddressForBinding, out ip))
return;
if (Servers.ContainsKey(ipAddressForBinding))
return;
var dnsServer = new DnsServer(ip, 10, 10);
dnsServer.QueryReceived += OnQueryReceived;
Servers.Add(ipAddressForBinding, dnsServer);
dnsServer.Start();
var appLog = new System.Diagnostics.EventLog {Source = "Hyper-V Dns Proxy"};
appLog.WriteEntry($"Started DNS Service on {ipAddressForBinding}");
}
private static void StartServer()
{
Console.Write("Starting Nameserver.... ");
if (server == null)
{
server = new DnsServer(IPAddress.Any, 10, 10, ProcessQuery);
server.ExceptionThrown += server_ExceptionThrown;
Ok = false;
}
try
{
server.Start();
Console.WriteLine("Done.");
Ok = true;
}
catch (SocketException ex)
{
ConsoleUtils.WriteWarning("Unable to start nameserver, port 53 may be in use. " + ex.Message);
Ok = false;
}
}
public void Stop()
{
if (!IsRunning)
{
return;
}
try
{
Logger.Log(LogSeverity.Info, "Stopping the TorDNS server.");
_dnsServer.Stop();
}
finally
{
_dnsServer = null;
IsRunning = false;
}
}
internal VelvetService(IDnsLookup dnsLookup)
{
this.dnsLookup = dnsLookup;
this.dnsServer = new DnsServer(IPAddress.Any, 10, 10, dnsLookup.ProcessQuery);
}
