internal virtual string ReadString(byte[] src, int srcIndex, int maxLen, bool useUnicode
)
{
int len = 0;
string str = null;
try
{
if (useUnicode)
{
// Unicode requires word alignment
if (((srcIndex - HeaderStart) % 2) != 0)
{
srcIndex++;
}
while (src[srcIndex + len] != 0x00 || src[srcIndex
+ len + 1] != 0x00)
{
len += 2;
if (len > maxLen)
{
if (Log.Level > 0)
{
Hexdump.ToHexdump(LogStream.GetInstance(), src, srcIndex, maxLen < 128 ? maxLen + 8 :
128);
}
throw new RuntimeException("zero termination not found");
}
}
str = Runtime.GetStringForBytes(src, srcIndex, len, SmbConstants.UniEncoding);
}
else
{
while (src[srcIndex + len] != 0x00)
{
len++;
if (len > maxLen)
{
if (Log.Level > 0)
{
Hexdump.ToHexdump(LogStream.GetInstance(), src, srcIndex, maxLen < 128 ? maxLen + 8 :
128);
}
throw new RuntimeException("zero termination not found");
}
}
str = Runtime.GetStringForBytes(src, srcIndex, len, SmbConstants.OemEncoding);
}
}
catch (UnsupportedEncodingException uee)
{
if (Log.Level > 1)
{
Runtime.PrintStackTrace(uee, Log);
}
}
return(str);
}
public virtual void Run()
{
int nameTrnId;
NameServicePacket response;
try
{
while (_thread == Thread.CurrentThread())
{
_socket.SoTimeOut = _closeTimeout;
int len = _socket.Receive(_rcvBuf, 0, RcvBufSize);
if (_log.Level > 3)
{
_log.WriteLine("NetBIOS: new data read from socket");
}
nameTrnId = NameServicePacket.ReadNameTrnId(_rcvBuf, 0);
response = (NameServicePacket)_responseTable.Get(nameTrnId);
if (response == null || response.Received)
{
continue;
}
lock (response)
{
response.ReadWireFormat(_rcvBuf, 0);
if (_log.Level > 3)
{
_log.WriteLine(response);
Hexdump.ToHexdump(_log, _rcvBuf, 0, len);
}
if (response.IsResponse)
{
response.Received = true;
Runtime.Notify(response);
}
}
}
}
catch (TimeoutException) { }
catch (Exception ex)
{
if (_log.Level > 2)
{
Runtime.PrintStackTrace(ex, _log);
}
}
finally
{
TryClose();
}
}
/// <exception cref="SharpCifs.Smb.SmbException"></exception>
public SigningDigest(SmbTransport transport, NtlmPasswordAuthentication auth)
{
try
{
_digest = MessageDigest.GetInstance("MD5");
}
catch (NoSuchAlgorithmException ex)
{
if (Log.Level > 0)
{
Runtime.PrintStackTrace(ex, Log);
}
throw new SmbException("MD5", ex);
}
try
{
switch (SmbConstants.LmCompatibility)
{
case 0:
case 1:
case 2:
{
_macSigningKey = new byte[40];
auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
Array.Copy(auth.GetUnicodeHash(transport.Server.EncryptionKey), 0, _macSigningKey
, 16, 24);
break;
}
case 3:
case 4:
case 5:
{
_macSigningKey = new byte[16];
auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
break;
}
default:
{
_macSigningKey = new byte[40];
auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
Array.Copy(auth.GetUnicodeHash(transport.Server.EncryptionKey), 0, _macSigningKey
, 16, 24);
break;
}
}
}
catch (Exception ex)
{
throw new SmbException(string.Empty, ex);
}
if (Log.Level >= 5)
{
Log.WriteLine("LM_COMPATIBILITY=" + SmbConstants.LmCompatibility);
Hexdump.ToHexdump(Log, _macSigningKey, 0, _macSigningKey.Length);
}
}
/// <exception cref="System.IO.IOException"></exception>
protected internal override void DoRecv(Response response)
{
ServerMessageBlock resp = (ServerMessageBlock)response;
resp.UseUnicode = UseUnicode;
resp.ExtendedSecurity = (Capabilities & SmbConstants.CapExtendedSecurity) == SmbConstants.CapExtendedSecurity;
lock (Buf)
{
Array.Copy(Sbuf, 0, Buf, 0, 4 + SmbConstants.HeaderLength);
int size = Encdec.Dec_uint16be(Buf, 2) & 0xFFFF;
if (size < (SmbConstants.HeaderLength + 1) || (4 + size) > RcvBufSize)
{
throw new IOException("Invalid payload size: " + size);
}
int errorCode = Encdec.Dec_uint32le(Buf, 9) & unchecked ((int)(0xFFFFFFFF));
if (resp.Command == ServerMessageBlock.SmbComReadAndx && (errorCode == 0 || errorCode
== unchecked ((int)(0x80000005))))
{
// overflow indicator normal for pipe
SmbComReadAndXResponse r = (SmbComReadAndXResponse)resp;
int off = SmbConstants.HeaderLength;
Readn(In, Buf, 4 + off, 27);
off += 27;
resp.Decode(Buf, 4);
int pad = r.DataOffset - off;
if (r.ByteCount > 0 && pad > 0 && pad < 4)
{
Readn(In, Buf, 4 + off, pad);
}
if (r.DataLength > 0)
{
Readn(In, r.B, r.Off, r.DataLength);
}
}
else
{
Readn(In, Buf, 4 + 32, size - 32);
resp.Decode(Buf, 4);
if (resp is SmbComTransactionResponse)
{
((SmbComTransactionResponse)resp).Current();
}
}
if (Digest != null && resp.ErrorCode == 0)
{
Digest.Verify(Buf, 4, resp);
}
if (Log.Level >= 4)
{
Log.WriteLine(response);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Buf, 4, size);
}
}
}
}
public virtual byte[] Digest()
{
byte[] b;
b = _digest.Digest();
if (Log.Level >= 5)
{
Log.WriteLine("digest: ");
Hexdump.ToHexdump(Log, b, 0, b.Length);
}
_updates = 0;
return(b);
}
public virtual void Update(byte[] input, int offset, int len)
{
if (Log.Level >= 5)
{
Log.WriteLine("update: " + _updates + " " + offset + ":" + len);
Hexdump.ToHexdump(Log, input, offset, Math.Min(len, 256));
}
if (len == 0)
{
return;
}
_digest.Update(input, offset, len);
_updates++;
}
/// <exception cref="System.IO.IOException"></exception>
protected internal override ServerMessageBlock PeekKey()
{
int n;
do
{
if ((n = Readn(In, Sbuf, 0, 4)) < 4)
{
return(null);
}
}while (Sbuf[0] == 0x85);
if ((n = Readn(In, Sbuf, 4, 32)) < 32)
{
return(null);
}
if (Log.Level >= 4)
{
Log.WriteLine("New data read: " + this);
Hexdump.ToHexdump(Log, Sbuf, 4, 32);
}
for (;;)
{
if (Sbuf[0] == 0x00 && Sbuf[1] == 0x00 &&
Sbuf[4] == 0xFF &&
Sbuf[5] == 'S' &&
Sbuf[6] == 'M' &&
Sbuf[7] == 'B')
{
break;
}
for (int i = 0; i < 35; i++)
{
Sbuf[i] = Sbuf[i + 1];
}
int b;
if ((b = In.Read()) == -1)
{
return(null);
}
Sbuf[35] = unchecked ((byte)b);
}
Key.Mid = Encdec.Dec_uint16le(Sbuf, 34) & 0xFFFF;
return(Key);
}
/// <exception cref="System.IO.IOException"></exception>
protected internal override void DoSend(ServerMessageBlock request)
{
lock (Buf)
{
ServerMessageBlock smb = request;
int n = smb.Encode(Buf, 4);
Encdec.Enc_uint32be(n & 0xFFFF, Buf, 0);
if (Log.Level >= 4)
{
do
{
Log.WriteLine(smb);
}while (smb is AndXServerMessageBlock &&
(smb = ((AndXServerMessageBlock)smb).Andx) != null);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Buf, 4, n);
}
}
Out.Write(Buf, 0, 4 + n);
}
}
/// <summary>Performs MAC signature verification.</summary>
/// <remarks>
/// Performs MAC signature verification. This calculates the signature
/// of the SMB and compares it to the signature field on the SMB itself.
/// </remarks>
/// <param name="data">The data.</param>
/// <param name="offset">The starting offset at which the SMB header begins.</param>
/// <param name="length">The length of the SMB data starting at offset.</param>
internal virtual bool Verify(byte[] data, int offset, ServerMessageBlock response
)
{
Update(_macSigningKey, 0, _macSigningKey.Length);
int index = offset;
Update(data, index, SmbConstants.SignatureOffset);
index += SmbConstants.SignatureOffset;
byte[] sequence = new byte[8];
ServerMessageBlock.WriteInt4(response.SignSeq, sequence, 0);
Update(sequence, 0, sequence.Length);
index += 8;
if (response.Command == ServerMessageBlock.SmbComReadAndx)
{
SmbComReadAndXResponse raxr = (SmbComReadAndXResponse)response;
int length = response.Length - raxr.DataLength;
Update(data, index, length - SmbConstants.SignatureOffset - 8);
Update(raxr.B, raxr.Off, raxr.DataLength);
}
else
{
Update(data, index, response.Length - SmbConstants.SignatureOffset - 8);
}
byte[] signature = Digest();
for (int i = 0; i < 8; i++)
{
if (signature[i] != data[offset + SmbConstants.SignatureOffset + i])
{
if (Log.Level >= 2)
{
Log.WriteLine("signature verification failure");
Hexdump.ToHexdump(Log, signature, 0, 8);
Hexdump.ToHexdump(Log, data, offset + SmbConstants.SignatureOffset, 8);
}
return(response.VerifyFailed = true);
}
}
return(response.VerifyFailed = false);
}
/// <exception cref="SharpCifs.Smb.SmbException"></exception>
public SigningDigest(byte[] macSigningKey, bool bypass)
{
try
{
_digest = MessageDigest.GetInstance("MD5");
}
catch (NoSuchAlgorithmException ex)
{
if (Log.Level > 0)
{
Runtime.PrintStackTrace(ex, Log);
}
throw new SmbException("MD5", ex);
}
this._macSigningKey = macSigningKey;
this._bypass = bypass;
_updates = 0;
_signSequence = 0;
if (Log.Level >= 5)
{
Log.WriteLine("macSigningKey:");
Hexdump.ToHexdump(Log, macSigningKey, 0, macSigningKey.Length);
}
}
/// <exception cref="System.IO.IOException"></exception>
private void Negotiate(int port, ServerMessageBlock resp)
{
lock (Sbuf)
{
if (port == 139)
{
Ssn139();
}
else
{
if (port == -1)
{
port = SmbConstants.DefaultPort;
}
// 445
Socket = new SocketEx(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp);
//TCPローカルポートは、毎回空いているものを使う。
//https://blogs.msdn.microsoft.com/dgorti/2005/09/18/only-one-usage-of-each-socket-address-protocolnetwork-addressport-is-normally-permitted/
Socket.Bind(new IPEndPoint(LocalAddr, 0));
Socket.Connect(new IPEndPoint(IPAddress.Parse(Address.GetHostAddress()),
port), // <- 445
SmbConstants.ConnTimeout);
Socket.SoTimeOut = SmbConstants.SoTimeout;
Out = Socket.GetOutputStream();
In = Socket.GetInputStream();
}
if (++Mid == 32000)
{
Mid = 1;
}
NegotiateRequest.Mid = Mid;
int n = NegotiateRequest.Encode(Sbuf, 4);
Encdec.Enc_uint32be(n & 0xFFFF, Sbuf, 0);
if (Log.Level >= 4)
{
Log.WriteLine(NegotiateRequest);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Sbuf, 4, n);
}
}
Out.Write(Sbuf, 0, 4 + n);
Out.Flush();
if (PeekKey() == null)
{
throw new IOException("transport closed in negotiate");
}
int size = Encdec.Dec_uint16be(Sbuf, 2) & 0xFFFF;
if (size < 33 || (4 + size) > Sbuf.Length)
{
throw new IOException("Invalid payload size: " + size);
}
Readn(In, Sbuf, 4 + 32, size - 32);
resp.Decode(Sbuf, 4);
if (Log.Level >= 4)
{
Log.WriteLine(resp);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Sbuf, 4, n);
}
}
}
}
/// <exception cref="SharpCifs.Smb.SmbException"></exception>
public virtual byte[] InitSecContext(byte[] token, int offset, int len)
{
switch (State)
{
case 1:
{
Type1Message msg1 = new Type1Message(NtlmsspFlags,
Auth.GetDomain(),
Workstation);
token = msg1.ToByteArray();
if (Log.Level >= 4)
{
Log.WriteLine(msg1);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, token, 0, token.Length);
}
}
State++;
break;
}
case 2:
{
try
{
Type2Message msg2 = new Type2Message(token);
if (Log.Level >= 4)
{
Log.WriteLine(msg2);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, token, 0, token.Length);
}
}
ServerChallenge = msg2.GetChallenge();
NtlmsspFlags &= msg2.GetFlags();
//netbiosName = getNtlmsspListItem(token, 0x0001);
Type3Message msg3 = new Type3Message(msg2,
Auth.GetPassword(),
Auth.GetDomain(),
Auth.GetUsername(),
Workstation,
NtlmsspFlags);
token = msg3.ToByteArray();
if (Log.Level >= 4)
{
Log.WriteLine(msg3);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, token, 0, token.Length);
}
}
if ((NtlmsspFlags & NtlmFlags.NtlmsspNegotiateSign) != 0)
{
SigningKey = msg3.GetMasterKey();
}
isEstablished = true;
State++;
break;
}
catch (Exception e)
{
throw new SmbException(e.Message, e);
}
}
default:
{
throw new SmbException("Invalid state");
}
}
return token;
}
/// <exception cref="System.IO.IOException"></exception>
private void Negotiate(int port, ServerMessageBlock resp)
{
lock (Sbuf)
{
if (port == 139)
{
Ssn139();
}
else
{
if (port == -1)
{
port = SmbConstants.DefaultPort;
}
// 445
Socket = new SocketEx(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
if (LocalAddr != null)
{
Socket.Bind2(new IPEndPoint(LocalAddr, LocalPort));
}
Socket.Connect(Address.GetHostAddress(), port);
//Socket.Connect(new IPEndPoint(IPAddress.Parse(Address.GetHostAddress()), port), SmbConstants.ConnTimeout);
Socket.SoTimeOut = SmbConstants.SoTimeout;
Out = Socket.GetOutputStream();
In = Socket.GetInputStream();
}
if (++Mid == 32000)
{
Mid = 1;
}
NegotiateRequest.Mid = Mid;
int n = NegotiateRequest.Encode(Sbuf, 4);
Encdec.Enc_uint32be(n & 0xFFFF, Sbuf, 0);
if (Log.Level >= 4)
{
Log.WriteLine(NegotiateRequest);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Sbuf, 4, n);
}
}
Out.Write(Sbuf, 0, 4 + n);
Out.Flush();
if (PeekKey() == null)
{
throw new IOException("transport closed in negotiate");
}
int size = Encdec.Dec_uint16be(Sbuf, 2) & 0xFFFF;
if (size < 33 || (4 + size) > Sbuf.Length)
{
throw new IOException("Invalid payload size: " + size);
}
Readn(In, Sbuf, 4 + 32, size - 32);
resp.Decode(Sbuf, 4);
if (Log.Level >= 4)
{
Log.WriteLine(resp);
if (Log.Level >= 6)
{
Hexdump.ToHexdump(Log, Sbuf, 4, n);
}
}
}
}
/// <exception cref="System.IO.IOException"></exception>
internal virtual void Send(NameServicePacket request, NameServicePacket response,
int timeout)
{
int nid = 0;
int max = NbtAddress.Nbns.Length;
if (max == 0)
{
max = 1;
}
lock (response)
{
while (max-- > 0)
{
try
{
lock (_lock)
{
request.NameTrnId = GetNextNameTrnId();
nid = request.NameTrnId;
response.Received = false;
_responseTable.Put(nid, response);
EnsureOpen(timeout + 1000);
int requestLenght = request.WriteWireFormat(_sndBuf, 0);
_socket.Send(_sndBuf, 0, requestLenght, new IPEndPoint(request.Addr, _lport));
if (_log.Level > 3)
{
_log.WriteLine(request);
Hexdump.ToHexdump(_log, _sndBuf, 0, requestLenght);
}
}
if (_waitResponse)
{
long start = Runtime.CurrentTimeMillis();
while (timeout > 0)
{
Runtime.Wait(response, timeout);
if (response.Received && request.QuestionType == response.RecordType)
{
return;
}
response.Received = false;
timeout -= (int)(Runtime.CurrentTimeMillis() - start);
}
}
}
catch (Exception ie)
{
throw new IOException(ie.Message);
}
finally
{
//Sharpen.Collections.Remove(responseTable, nid);
if (_waitResponse)
{
_responseTable.Remove(nid);
}
}
if (_waitResponse)
{
lock (_lock)
{
if (NbtAddress.IsWins(request.Addr) == false)
{
break;
}
if (request.Addr == NbtAddress.GetWinsAddress())
{
NbtAddress.SwitchWins();
}
request.Addr = NbtAddress.GetWinsAddress();
}
}
}
}
}
/// <exception cref="System.IO.IOException"></exception>
internal virtual void Send(NameServicePacket request,
NameServicePacket response,
int timeout)
{
//Log.Out("NameSerciceClient.Send - Start");
int nid = 0;
int max = NbtAddress.Nbns.Length;
if (max == 0)
{
max = 1;
}
lock (response)
{
this._isActive = true;
while (max-- > 0)
{
try
{
lock (_lock)
{
request.NameTrnId = GetNextNameTrnId();
nid = request.NameTrnId;
response.Received = false;
_responseTable.Put(nid, response);
//Log.Out($"NameSerciceClient.Send - timeout = {timeout}");
EnsureOpen(timeout + 1000);
int requestLenght = request.WriteWireFormat(_sndBuf, 0);
byte[] msg = new byte[requestLenght];
Array.Copy(_sndBuf, msg, requestLenght);
_socketSender.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.Broadcast,
request.IsBroadcast
? 1
: 0);
_socketSender.SendTo(msg, new IPEndPoint(request.Addr, _lport));
//Log.Out("NameSerciceClient.Send - Sended");
if (_log.Level > 3)
{
_log.WriteLine(request);
Hexdump.ToHexdump(_log, _sndBuf, 0, requestLenght);
}
}
if (_waitResponse)
{
long start = Runtime.CurrentTimeMillis();
var isRecieved = false;
var startTime = DateTime.Now;
while (timeout > 0)
{
Runtime.Wait(response, timeout);
if (response.Received && request.QuestionType == response.RecordType)
{
//return;
isRecieved = true;
break;
}
response.Received = false;
timeout -= (int)(Runtime.CurrentTimeMillis() - start);
//if (timeout <= 0)
//{
// Log.Out($"NameSerciceClient.Send Timeout! - {(DateTime.Now - startTime).TotalMilliseconds} msec");
//}
}
if (isRecieved)
{
break;
}
}
}
catch (Exception ie)
{
if (_waitResponse)
{
_responseTable.Remove(nid);
}
//Log.Out("NameSerciceClient.Send - IOException");
throw new IOException(ie.Message);
}
finally
{
if (_waitResponse)
{
_responseTable.Remove(nid);
}
}
if (_waitResponse)
{
lock (_lock)
{
if (NbtAddress.IsWins(request.Addr) == false)
{
break;
}
if (request.Addr == NbtAddress.GetWinsAddress())
{
NbtAddress.SwitchWins();
}
request.Addr = NbtAddress.GetWinsAddress();
}
}
}
this._isActive = false;
//Log.Out("NameSerciceClient.Send - Normaly Ended.");
}
}
public virtual void Run()
{
int nameTrnId;
NameServicePacket response;
try
{
while (Thread.CurrentThread().Equals(_thread))
{
if (_thread.IsCanceled)
{
break;
}
var localPort = (SmbConstants.Lport == 0) ? _lport : SmbConstants.Lport;
var sockEvArg = new SocketAsyncEventArgs();
sockEvArg.RemoteEndPoint = new IPEndPoint(IPAddress.Any, localPort);
sockEvArg.SetBuffer(_rcvBuf, 0, RcvBufSize);
sockEvArg.Completed += this.OnReceiveCompleted;
_socketSender.SoTimeOut = _closeTimeout;
this._recievedLength = -1;
//Log.Out($"NameServiceClient.Run - Wait Recieve: {IPAddress.Any}: {localPort}");
_socketSender.ReceiveFromAsync(sockEvArg);
while (this._recievedLength == -1)
{
if (_thread.IsCanceled)
{
break;
}
Task.Delay(300).GetAwaiter().GetResult();
}
sockEvArg?.Dispose();
if (_thread.IsCanceled)
{
break;
}
if (_log.Level > 3)
{
_log.WriteLine("NetBIOS: new data read from socket");
}
nameTrnId = NameServicePacket.ReadNameTrnId(_rcvBuf, 0);
response = (NameServicePacket)_responseTable.Get(nameTrnId);
if (response == null || response.Received)
{
continue;
}
lock (response)
{
if (_thread.IsCanceled)
{
break;
}
response.ReadWireFormat(_rcvBuf, 0);
if (_log.Level > 3)
{
_log.WriteLine(response);
Hexdump.ToHexdump(_log, _rcvBuf, 0, this._recievedLength);
}
if (response.IsResponse)
{
response.Received = true;
Runtime.Notify(response);
}
}
}
}
catch (TimeoutException) { }
catch (Exception ex)
{
if (_log.Level > 2)
{
Runtime.PrintStackTrace(ex, _log);
}
}
finally
{
TryClose();
}
}
