/// <summary>
/// Constructor.
/// </summary>
public CifsServerPerConnection()
{
this.signingSessionKey = new byte[0];
this.signingChallengeResponse = new byte[0];
this.ntlmChallenge = new byte[8];
new Random().NextBytes(this.ntlmChallenge);
this.sessionTable = new Dictionary<ushort, IFileServiceServerSession>();
this.pendingRequestTable = new Dictionary<ushort,SmbFamilyPacket>();
this.serverNextReceiveSequenceNumber = 2;
this.serverSendSequenceNumbers = new Dictionary<ushort, ulong>();
this.negotiateTime = new FileTime();
}
public SmbNtCreateAndxResponsePacket CreateNtCreateAndxResponse(
CifsServerPerConnection connection,
SmbNtCreateAndxRequestPacket request,
OplockLevelValue opLockLevel,
ulong allocationSize,
ulong endOfFile,
FileTypeValue resourceType,
SMB_NMPIPE_STATUS nmPipeStatus,
byte directory,
SmbPacket andxPacket)
{
SmbNtCreateAndxResponsePacket response = new SmbNtCreateAndxResponsePacket();
response.SmbHeader = CifsMessageUtils.CreateSmbHeader(connection, request);
SMB_COM_NT_CREATE_ANDX_Response_SMB_Parameters smbParameters = response.SmbParameters;
smbParameters.AndXCommand =
andxPacket != null ? andxPacket.SmbHeader.Command : SmbCommand.SMB_COM_NO_ANDX_COMMAND;
smbParameters.AndXReserved = 0x00;
smbParameters.AndXOffset = (ushort)(response.HeaderSize + Marshal.SizeOf(response.SmbParameters)
+ Marshal.SizeOf(response.SmbData));
smbParameters.OplockLevel = opLockLevel;
smbParameters.FID = (ushort)connection.GenerateFID();
smbParameters.CreateDisposition = NtTransactCreateDisposition.FILE_CREATE;
FileTime fileTime = new FileTime();
fileTime.Time = (ulong)DateTime.Now.ToFileTime();
smbParameters.CreateTime = fileTime;
smbParameters.LastAccessTime = fileTime;
smbParameters.LastChangeTime = fileTime;
smbParameters.ExtFileAttributes = (SMB_EXT_FILE_ATTR)request.SmbParameters.ExtFileAttributes;
smbParameters.AllocationSize = allocationSize;
smbParameters.EndOfFile = endOfFile;
smbParameters.ResourceType = resourceType;
smbParameters.NMPipeStatus = nmPipeStatus;
smbParameters.Directory = directory;
smbParameters.WordCount = (byte)(TypeMarshal.GetBlockMemorySize(smbParameters) / 2);
response.SmbParameters = smbParameters;
response.AndxPacket = andxPacket;
response.UpdateHeader();
return response;
}
public SmbNtTransactCreateResponsePacket CreateNtTransactCreateResponse(
CifsServerPerConnection connection,
SmbNtTransactCreateRequestPacket request,
ulong allocationSize,
ulong endOfFile,
FileTypeValue resourceType,
SMB_NMPIPE_STATUS nmPipeStatus,
byte directory)
{
SmbNtTransactCreateResponsePacket response = new SmbNtTransactCreateResponsePacket();
response.SmbHeader = CifsMessageUtils.CreateSmbHeader(connection, request);
NT_TRANSACT_CREATE_Response_NT_Trans_Parameters ntTransParameters = response.NtTransParameters;
ntTransParameters.OpLockLevel = OplockLevelValue.None;
ntTransParameters.Reserved = 0x00;
ntTransParameters.FID = (ushort)connection.GenerateFID();
ntTransParameters.CreateAction = NtTransactCreateActionValues.FILE_CREATED;
FileTime fileTime = new FileTime();
fileTime.Time = (ulong)DateTime.Now.ToFileTime();
ntTransParameters.CreationTime = fileTime;
ntTransParameters.LastAccessTime = fileTime;
ntTransParameters.LastWriteTime = fileTime;
ntTransParameters.LastChangeTime = fileTime;
ntTransParameters.ExtFileAttributes = request.NtTransParameters.ExtFileAttributes;
ntTransParameters.AllocationSize = allocationSize;
ntTransParameters.EndOfFile = endOfFile;
ntTransParameters.ResourceType = resourceType;
ntTransParameters.NMPipeStatus = nmPipeStatus;
ntTransParameters.Directory = directory;
response.NtTransParameters = ntTransParameters;
response.UpdateCountAndOffset();
return response;
}
public SmbNegotiateResponsePacket CreateNegotiateResponse(
CifsServerPerConnection connection,
SmbNegotiateRequestPacket request,
SecurityModes securityMode)
{
SmbNegotiateResponsePacket response = new SmbNegotiateResponsePacket();
response.SmbHeader = CifsMessageUtils.CreateSmbHeader(connection, request);
Stack<string> dialectStrings = new Stack<string>();
for (int offset = 0; offset < request.SmbData.Dialects.Length; offset++)
{
string dialectString = CifsMessageUtils.ToSmbString(request.SmbData.Dialects, offset, true);
dialectStrings.Push(dialectString);
offset += sizeof(byte) + dialectString.Length;
}
while(dialectStrings.Count > 0)
{
string dialectString = dialectStrings.Pop();
if(dialectString == CifsMessageUtils.DIALECT_NTLANMAN)
{
SMB_COM_NEGOTIATE_NtLanManagerResponse_SMB_Parameters smbParameters = response.SmbParameters;
smbParameters.WordCount = (byte)((Marshal.SizeOf(response.SmbParameters) - sizeof(byte)) / 2);
smbParameters.DialectIndex = (ushort)dialectStrings.Count;
smbParameters.SecurityMode = securityMode;
smbParameters.MaxMpxCount = (ushort)this.context.MaxMpxCount;
smbParameters.MaxNumberVcs = (ushort)this.context.MaxNumberVcs;
smbParameters.MaxBufferSize = (ushort)this.context.MaxBufferSize;
smbParameters.MaxRawSize = (ushort)this.context.MaxRawSize;
smbParameters.SessionKey = 0;
smbParameters.Capabilities = this.context.Capabilities;
FileTime fileTime = new FileTime();
fileTime.Time = (ulong)DateTime.Now.ToFileTime();
smbParameters.SystemTime = fileTime;
smbParameters.ServerTimeZone = (short)TimeZone.CurrentTimeZone.GetUtcOffset(DateTime.Now).Minutes;
smbParameters.ChallengeLength = (byte)connection.NTLMChallenge.Length;
response.SmbParameters = smbParameters;
SMB_COM_NEGOTIATE_NtLanManagerResponse_SMB_Data smbData = response.SmbData;
smbData.Challenge = connection.NTLMChallenge;
smbData.DomainName = CifsMessageUtils.ToSmbStringBytes(this.context.DomainName, true);
smbData.ByteCount = (ushort)(smbData.Challenge.Length + smbData.DomainName.Length);
response.SmbData = smbData;
return response;
}
else if (dialectString == CifsMessageUtils.DIALECT_PCLAN
|| dialectString == CifsMessageUtils.DIALECT_PCNETWORK_PROGRAM)
{
SMB_COM_NEGOTIATE_NtLanManagerResponse_SMB_Parameters smbParameters = response.SmbParameters;
smbParameters.WordCount = 0x1;
smbParameters.DialectIndex = (ushort)dialectStrings.Count;
response.SmbParameters = smbParameters;
SMB_COM_NEGOTIATE_NtLanManagerResponse_SMB_Data smbData = response.SmbData;
smbData.Challenge = connection.NTLMChallenge;
smbData.DomainName = CifsMessageUtils.ToSmbStringBytes(this.context.DomainName, true);
smbData.ByteCount = (ushort)(smbData.Challenge.Length + smbData.DomainName.Length);
response.SmbData = smbData;
return response;
}
}
throw new NotSupportedException("None of these dialects is supported.");
}
