public SMB1Session(SMB1ConnectionState connection, ushort userID, string userName, string machineName, byte[] sessionKey, object accessToken)
{
m_connection = connection;
m_userID = userID;
m_sessionKey = sessionKey;
m_securityContext = new SecurityContext(userName, machineName, connection.ClientEndPoint, connection.AuthenticationContext, accessToken);
m_creationDT = DateTime.UtcNow;
}
/// <summary>
/// May return an empty list
/// </summary>
private List <SMB1Command> ProcessSMB1Command(SMB1Header header, SMB1Command command, ref ConnectionState state)
{
if (state.Dialect == SMBDialect.NotSet)
{
if (command is NegotiateRequest)
{
NegotiateRequest request = (NegotiateRequest)command;
if (request.Dialects.Contains(SMBServer.NTLanManagerDialect))
{
state = new SMB1ConnectionState(state);
state.Dialect = SMBDialect.NTLM012;
m_connectionManager.AddConnection(state);
if (EnableExtendedSecurity && header.ExtendedSecurityFlag)
{
return(NegotiateHelper.GetNegotiateResponseExtended(request, m_serverGuid));
}
else
{
return(NegotiateHelper.GetNegotiateResponse(header, request, m_securityProvider, state));
}
}
else
{
return(new NegotiateResponseNotSupported());
}
}
else
{
// [MS-CIFS] An SMB_COM_NEGOTIATE exchange MUST be completed before any other SMB messages are sent to the server
header.Status = NTStatus.STATUS_INVALID_SMB;
return(new ErrorResponse(command.CommandName));
}
}
else if (command is NegotiateRequest)
{
// There MUST be only one SMB_COM_NEGOTIATE exchange per SMB connection.
// Subsequent SMB_COM_NEGOTIATE requests received by the server MUST be rejected with error responses.
header.Status = NTStatus.STATUS_INVALID_SMB;
return(new ErrorResponse(command.CommandName));
}
else
{
return(ProcessSMB1Command(header, command, (SMB1ConnectionState)state));
}
}
public SMB1AsyncContext CreateAsyncContext(ushort userID, ushort treeID, uint processID, ushort multiplexID, ushort fileID, SMB1ConnectionState connection)
{
SMB1AsyncContext context = new SMB1AsyncContext();
context.UID = userID;
context.TID = treeID;
context.MID = multiplexID;
context.PID = processID;
context.FileID = fileID;
context.Connection = connection;
lock (m_pendingRequests)
{
m_pendingRequests.Add(context);
}
return(context);
}
private List <SMB1Command> ProcessSMB1Command(SMB1Header header, SMB1Command command, SMB1ConnectionState state)
{
if (command is SessionSetupAndXRequest)
{
SessionSetupAndXRequest request = (SessionSetupAndXRequest)command;
state.MaxBufferSize = request.MaxBufferSize;
return(SessionSetupHelper.GetSessionSetupResponse(header, request, m_securityProvider, state));
}
else if (command is SessionSetupAndXRequestExtended)
{
SessionSetupAndXRequestExtended request = (SessionSetupAndXRequestExtended)command;
state.MaxBufferSize = request.MaxBufferSize;
return(SessionSetupHelper.GetSessionSetupResponseExtended(header, request, m_securityProvider, state));
}
else if (command is EchoRequest)
{
return(EchoHelper.GetEchoResponse((EchoRequest)command));
}
else
{
SMB1Session session = state.GetSession(header.UID);
if (session == null)
{
header.Status = NTStatus.STATUS_USER_SESSION_DELETED;
return(new ErrorResponse(command.CommandName));
}
if (command is TreeConnectAndXRequest)
{
return(TreeConnectHelper.GetTreeConnectResponse(header, (TreeConnectAndXRequest)command, state, m_services, m_shares));
}
else if (command is LogoffAndXRequest)
{
state.LogToServer(Severity.Information, "Logoff: User '{0}' logged off. (UID: {1})", session.UserName, header.UID);
m_securityProvider.DeleteSecurityContext(ref session.SecurityContext.AuthenticationContext);
state.RemoveSession(header.UID);
return(new LogoffAndXResponse());
}
else
{
ISMBShare share = session.GetConnectedTree(header.TID);
if (share == null)
{
state.LogToServer(Severity.Verbose, "{0} failed. Invalid TID (UID: {1}, TID: {2}).", command.CommandName, header.UID, header.TID);
header.Status = NTStatus.STATUS_SMB_BAD_TID;
return(new ErrorResponse(command.CommandName));
}
if (command is CreateDirectoryRequest)
{
return(FileStoreResponseHelper.GetCreateDirectoryResponse(header, (CreateDirectoryRequest)command, share, state));
}
else if (command is DeleteDirectoryRequest)
{
return(FileStoreResponseHelper.GetDeleteDirectoryResponse(header, (DeleteDirectoryRequest)command, share, state));
}
else if (command is CloseRequest)
{
return(CloseHelper.GetCloseResponse(header, (CloseRequest)command, share, state));
}
else if (command is FlushRequest)
{
return(ReadWriteResponseHelper.GetFlushResponse(header, (FlushRequest)command, share, state));
}
else if (command is DeleteRequest)
{
return(FileStoreResponseHelper.GetDeleteResponse(header, (DeleteRequest)command, share, state));
}
else if (command is RenameRequest)
{
return(FileStoreResponseHelper.GetRenameResponse(header, (RenameRequest)command, share, state));
}
else if (command is QueryInformationRequest)
{
return(FileStoreResponseHelper.GetQueryInformationResponse(header, (QueryInformationRequest)command, share, state));
}
else if (command is SetInformationRequest)
{
return(FileStoreResponseHelper.GetSetInformationResponse(header, (SetInformationRequest)command, share, state));
}
else if (command is ReadRequest)
{
return(ReadWriteResponseHelper.GetReadResponse(header, (ReadRequest)command, share, state));
}
else if (command is WriteRequest)
{
return(ReadWriteResponseHelper.GetWriteResponse(header, (WriteRequest)command, share, state));
}
else if (command is CheckDirectoryRequest)
{
return(FileStoreResponseHelper.GetCheckDirectoryResponse(header, (CheckDirectoryRequest)command, share, state));
}
else if (command is WriteRawRequest)
{
// [MS-CIFS] 3.3.5.26 - Receiving an SMB_COM_WRITE_RAW Request:
// the server MUST verify that the Server.Capabilities include CAP_RAW_MODE,
// If an error is detected [..] the Write Raw operation MUST fail and
// the server MUST return a Final Server Response [..] with the Count field set to zero.
return(new WriteRawFinalResponse());
}
else if (command is SetInformation2Request)
{
return(FileStoreResponseHelper.GetSetInformation2Response(header, (SetInformation2Request)command, share, state));
}
else if (command is LockingAndXRequest)
{
return(LockingHelper.GetLockingAndXResponse(header, (LockingAndXRequest)command, share, state));
}
else if (command is OpenAndXRequest)
{
return(OpenAndXHelper.GetOpenAndXResponse(header, (OpenAndXRequest)command, share, state));
}
else if (command is ReadAndXRequest)
{
return(ReadWriteResponseHelper.GetReadResponse(header, (ReadAndXRequest)command, share, state));
}
else if (command is WriteAndXRequest)
{
return(ReadWriteResponseHelper.GetWriteResponse(header, (WriteAndXRequest)command, share, state));
}
else if (command is FindClose2Request)
{
return(CloseHelper.GetFindClose2Response(header, (FindClose2Request)command, state));
}
else if (command is TreeDisconnectRequest)
{
return(TreeConnectHelper.GetTreeDisconnectResponse(header, (TreeDisconnectRequest)command, share, state));
}
else if (command is TransactionRequest) // Both TransactionRequest and Transaction2Request
{
return(TransactionHelper.GetTransactionResponse(header, (TransactionRequest)command, share, state));
}
else if (command is TransactionSecondaryRequest) // Both TransactionSecondaryRequest and Transaction2SecondaryRequest
{
return(TransactionHelper.GetTransactionResponse(header, (TransactionSecondaryRequest)command, share, state));
}
else if (command is NTTransactRequest)
{
return(NTTransactHelper.GetNTTransactResponse(header, (NTTransactRequest)command, share, state));
}
else if (command is NTTransactSecondaryRequest)
{
return(NTTransactHelper.GetNTTransactResponse(header, (NTTransactSecondaryRequest)command, share, state));
}
else if (command is NTCreateAndXRequest)
{
return(NTCreateHelper.GetNTCreateResponse(header, (NTCreateAndXRequest)command, share, state));
}
else if (command is NTCancelRequest)
{
CancelHelper.ProcessNTCancelRequest(header, (NTCancelRequest)command, share, state);
// [MS-CIFS] The SMB_COM_NT_CANCEL command MUST NOT send a response.
return(new List <SMB1Command>());
}
}
}
header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
return(new ErrorResponse(command.CommandName));
}
