Moved SMB1 specific server functionality to SMBServer.SMB1

SMBLibrary/SMBLibrary.csproj

@@ -131,6 +131,7 @@
     <Compile Include="Server\SMB1\TransactionSubcommandHelper.cs" />
     <Compile Include="Server\SMB1\TreeConnectHelper.cs" />
     <Compile Include="Server\SMBServer.cs" />
+    <Compile Include="Server\SMBServer.SMB1.cs" />
     <Compile Include="Server\User.cs" />
     <Compile Include="Server\UserCollection.cs" />
     <Compile Include="Services\Enums\PlatformName.cs" />

SMBLibrary/Server/SMBServer.SMB1.cs

@@ -0,0 +1,352 @@
+/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+ * 
+ * You can redistribute this program and/or modify it under the terms of
+ * the GNU Lesser Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ */
+using System;
+using System.Collections.Generic;
+using SMBLibrary.NetBios;
+using SMBLibrary.Server.SMB1;
+using SMBLibrary.SMB1;
+using Utilities;
+
+namespace SMBLibrary.Server
+{
+    public partial class SMBServer
+    {
+        public void ProcessSMB1Message(SMB1Message message, SMB1ConnectionState state)
+        {
+            SMB1Message reply = new SMB1Message();
+            PrepareResponseHeader(reply, message);
+            List<SMB1Command> sendQueue = new List<SMB1Command>();
+
+            foreach (SMB1Command command in message.Commands)
+            {
+                SMB1Command response = ProcessSMB1Command(reply.Header, command, state, sendQueue);
+                if (response != null)
+                {
+                    reply.Commands.Add(response);
+                }
+                if (reply.Header.Status != NTStatus.STATUS_SUCCESS)
+                {
+                    break;
+                }
+            }
+
+            if (reply.Commands.Count > 0)
+            {
+                TrySendMessage(state, reply);
+
+                foreach (SMB1Command command in sendQueue)
+                {
+                    SMB1Message secondaryReply = new SMB1Message();
+                    secondaryReply.Header = reply.Header;
+                    secondaryReply.Commands.Add(command);
+                    TrySendMessage(state, secondaryReply);
+                }
+            }
+        }
+
+        /// <summary>
+        /// May return null
+        /// </summary>
+        public SMB1Command ProcessSMB1Command(SMB1Header header, SMB1Command command, SMB1ConnectionState state, List<SMB1Command> sendQueue)
+        {
+            if (command is NegotiateRequest)
+            {
+                NegotiateRequest request = (NegotiateRequest)command;
+                if (request.Dialects.Contains(SMBServer.NTLanManagerDialect))
+                {
+                    if (EnableExtendedSecurity && header.ExtendedSecurityFlag)
+                    {
+                        return NegotiateHelper.GetNegotiateResponseExtended(request, m_serverGuid);
+                    }
+                    else
+                    {
+                        byte[] serverChallenge = m_users.GenerateServerChallenge();
+                        return NegotiateHelper.GetNegotiateResponse(header, request, serverChallenge);
+                    }
+                }
+                else
+                {
+                    return new NegotiateResponseNotSupported();
+                }
+            }
+            else if (command is SessionSetupAndXRequest)
+            {
+                SessionSetupAndXRequest request = (SessionSetupAndXRequest)command;
+                state.MaxBufferSize = request.MaxBufferSize;
+                return NegotiateHelper.GetSessionSetupResponse(header, request, m_users, state);
+            }
+            else if (command is SessionSetupAndXRequestExtended)
+            {
+                SessionSetupAndXRequestExtended request = (SessionSetupAndXRequestExtended)command;
+                state.MaxBufferSize = request.MaxBufferSize;
+                return NegotiateHelper.GetSessionSetupResponseExtended(header, request, m_users, state);
+            }
+            else if (command is EchoRequest)
+            {
+                return ServerResponseHelper.GetEchoResponse((EchoRequest)command, sendQueue);
+            }
+            else if (state.IsAuthenticated(header.UID))
+            {
+                if (command is TreeConnectAndXRequest)
+                {
+                    TreeConnectAndXRequest request = (TreeConnectAndXRequest)command;
+                    return TreeConnectHelper.GetTreeConnectResponse(header, request, state, m_shares);
+                }
+                else if (command is LogoffAndXRequest)
+                {
+                    return new LogoffAndXResponse();
+                }
+                else if (state.IsTreeConnected(header.TID))
+                {
+                    string rootPath = state.GetConnectedTreePath(header.TID);
+                    ISMBShare share;
+                    if (state.IsIPC(header.TID))
+                    {
+                        share = m_services;
+                    }
+                    else
+                    {
+                        share = m_shares.GetShareFromRelativePath(rootPath);
+                    }
+
+                    if (command is CreateDirectoryRequest)
+                    {
+                        if (!(share is FileSystemShare))
+                        {
+                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        CreateDirectoryRequest request = (CreateDirectoryRequest)command;
+                        return FileSystemResponseHelper.GetCreateDirectoryResponse(header, request, (FileSystemShare)share, state);
+                    }
+                    else if (command is DeleteDirectoryRequest)
+                    {
+                        if (!(share is FileSystemShare))
+                        {
+                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        DeleteDirectoryRequest request = (DeleteDirectoryRequest)command;
+                        return FileSystemResponseHelper.GetDeleteDirectoryResponse(header, request, (FileSystemShare)share, state);
+                    }
+                    else if (command is CloseRequest)
+                    {
+                        CloseRequest request = (CloseRequest)command;
+                        return ServerResponseHelper.GetCloseResponse(header, request, share, state);
+                    }
+                    else if (command is FlushRequest)
+                    {
+                        return new FlushResponse();
+                    }
+                    else if (command is DeleteRequest)
+                    {
+                        if (!(share is FileSystemShare))
+                        {
+                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        DeleteRequest request = (DeleteRequest)command;
+                        return FileSystemResponseHelper.GetDeleteResponse(header, request, (FileSystemShare)share, state);
+                    }
+                    else if (command is RenameRequest)
+                    {
+                        if (!(share is FileSystemShare))
+                        {
+                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        RenameRequest request = (RenameRequest)command;
+                        return FileSystemResponseHelper.GetRenameResponse(header, request, (FileSystemShare)share, state);
+                    }
+                    else if (command is QueryInformationRequest)
+                    {
+                        if (!(share is FileSystemShare))
+                        {
+                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        QueryInformationRequest request = (QueryInformationRequest)command;
+                        return FileSystemResponseHelper.GetQueryInformationResponse(header, request, (FileSystemShare)share);
+                    }
+                    else if (command is SetInformationRequest)
+                    {
+                        if (!(share is FileSystemShare))
+                        {
+                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        SetInformationRequest request = (SetInformationRequest)command;
+                        return FileSystemResponseHelper.GetSetInformationResponse(header, request, (FileSystemShare)share, state);
+                    }
+                    else if (command is ReadRequest)
+                    {
+                        ReadRequest request = (ReadRequest)command;
+                        return ReadWriteResponseHelper.GetReadResponse(header, request, share, state);
+                    }
+                    else if (command is WriteRequest)
+                    {
+                        string userName = state.GetConnectedUserName(header.UID);
+                        if (share is FileSystemShare && !((FileSystemShare)share).HasWriteAccess(userName))
+                        {
+                            header.Status = NTStatus.STATUS_ACCESS_DENIED;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        WriteRequest request = (WriteRequest)command;
+                        return ReadWriteResponseHelper.GetWriteResponse(header, request, share, state);
+                    }
+                    else if (command is CheckDirectoryRequest)
+                    {
+                        if (!(share is FileSystemShare))
+                        {
+                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        CheckDirectoryRequest request = (CheckDirectoryRequest)command;
+                        return FileSystemResponseHelper.GetCheckDirectoryResponse(header, request, (FileSystemShare)share);
+                    }
+                    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)
+                    {
+                        if (!(share is FileSystemShare))
+                        {
+                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        SetInformation2Request request = (SetInformation2Request)command;
+                        return FileSystemResponseHelper.GetSetInformation2Response(header, request, (FileSystemShare)share, state);
+                    }
+                    else if (command is LockingAndXRequest)
+                    {
+                        header.Status = NTStatus.STATUS_ACCESS_DENIED;
+                        return new ErrorResponse(CommandName.SMB_COM_LOCKING_ANDX);
+                    }
+                    else if (command is OpenAndXRequest)
+                    {
+                        OpenAndXRequest request = (OpenAndXRequest)command;
+                        return OpenAndXHelper.GetOpenAndXResponse(header, request, share, state);
+                    }
+                    else if (command is ReadAndXRequest)
+                    {
+                        ReadAndXRequest request = (ReadAndXRequest)command;
+                        return ReadWriteResponseHelper.GetReadResponse(header, request, share, state);
+                    }
+                    else if (command is WriteAndXRequest)
+                    {
+                        string userName = state.GetConnectedUserName(header.UID);
+                        if (share is FileSystemShare && !((FileSystemShare)share).HasWriteAccess(userName))
+                        {
+                            header.Status = NTStatus.STATUS_ACCESS_DENIED;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                        WriteAndXRequest request = (WriteAndXRequest)command;
+                        return ReadWriteResponseHelper.GetWriteResponse(header, request, share, state);
+                    }
+                    else if (command is FindClose2Request)
+                    {
+                        return ServerResponseHelper.GetFindClose2Request(header, (FindClose2Request)command, state);
+                    }
+                    else if (command is TreeDisconnectRequest)
+                    {
+                        TreeDisconnectRequest request = (TreeDisconnectRequest)command;
+                        return TreeConnectHelper.GetTreeDisconnectResponse(header, request, state);
+                    }
+                    else if (command is TransactionRequest) // Both TransactionRequest and Transaction2Request
+                    {
+                        TransactionRequest request = (TransactionRequest)command;
+                        try
+                        {
+                            return TransactionHelper.GetTransactionResponse(header, request, share, state, sendQueue);
+                        }
+                        catch (UnsupportedInformationLevelException)
+                        {
+                            header.Status = NTStatus.STATUS_INVALID_PARAMETER;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                    }
+                    else if (command is TransactionSecondaryRequest) // Both TransactionSecondaryRequest and Transaction2SecondaryRequest
+                    {
+                        TransactionSecondaryRequest request = (TransactionSecondaryRequest)command;
+                        try
+                        {
+                            return TransactionHelper.GetTransactionResponse(header, request, share, state, sendQueue);
+                        }
+                        catch (UnsupportedInformationLevelException)
+                        {
+                            header.Status = NTStatus.STATUS_INVALID_PARAMETER;
+                            return new ErrorResponse(command.CommandName);
+                        }
+                    }
+                    else if (command is NTTransactRequest)
+                    {
+                        NTTransactRequest request = (NTTransactRequest)command;
+                        return NTTransactHelper.GetNTTransactResponse(header, request, share, state, sendQueue);
+                    }
+                    else if (command is NTTransactSecondaryRequest)
+                    {
+                        NTTransactSecondaryRequest request = (NTTransactSecondaryRequest)command;
+                        return NTTransactHelper.GetNTTransactResponse(header, request, share, state, sendQueue);
+                    }
+                    else if (command is NTCreateAndXRequest)
+                    {
+                        NTCreateAndXRequest request = (NTCreateAndXRequest)command;
+                        return NTCreateHelper.GetNTCreateResponse(header, request, share, state);
+                    }
+                }
+                else
+                {
+                    header.Status = NTStatus.STATUS_SMB_BAD_TID;
+                    return new ErrorResponse(command.CommandName);
+                }
+            }
+
+            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
+            return new ErrorResponse(command.CommandName);
+        }
+
+        public static void TrySendMessage(SMB1ConnectionState state, SMB1Message response)
+        {
+            SessionMessagePacket packet = new SessionMessagePacket();
+            packet.Trailer = response.GetBytes();
+            TrySendPacket(state, packet);
+            System.Diagnostics.Debug.Print("[{0}] Response sent: {1} Commands, First Command: {2}, Packet length: {3}", DateTime.Now.ToString("HH:mm:ss:ffff"), response.Commands.Count, response.Commands[0].CommandName.ToString(), packet.Length);
+        }
+
+        private static void PrepareResponseHeader(SMB1Message response, SMB1Message request)
+        {
+            response.Header.Status = NTStatus.STATUS_SUCCESS;
+            response.Header.Flags = HeaderFlags.CaseInsensitive | HeaderFlags.CanonicalizedPaths | HeaderFlags.Reply;
+            response.Header.Flags2 = HeaderFlags2.NTStatusCode;
+            if ((request.Header.Flags2 & HeaderFlags2.LongNamesAllowed) > 0)
+            {
+                response.Header.Flags2 |= HeaderFlags2.LongNamesAllowed | HeaderFlags2.LongNameUsed;
+            }
+            if ((request.Header.Flags2 & HeaderFlags2.ExtendedAttributes) > 0)
+            {
+                response.Header.Flags2 |= HeaderFlags2.ExtendedAttributes;
+            }
+            if ((request.Header.Flags2 & HeaderFlags2.ExtendedSecurity) > 0)
+            {
+                response.Header.Flags2 |= HeaderFlags2.ExtendedSecurity;
+            }
+            if ((request.Header.Flags2 & HeaderFlags2.Unicode) > 0)
+            {
+                response.Header.Flags2 |= HeaderFlags2.Unicode;
+            }
+            response.Header.MID = request.Header.MID;
+            response.Header.PID = request.Header.PID;
+            response.Header.UID = request.Header.UID;
+            response.Header.TID = request.Header.TID;
+        }
+    }
+}

SMBLibrary/Server/SMBServer.cs

@@ -6,19 +6,16 @@
  */
 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Net;
 using System.Net.Sockets;
-using System.Text;
 using SMBLibrary.NetBios;
-using SMBLibrary.Server.SMB1;
 using SMBLibrary.Services;
 using SMBLibrary.SMB1;
 using Utilities;
 
 namespace SMBLibrary.Server
 {
-    public class SMBServer
+    public partial class SMBServer
     {
         public const int NetBiosOverTCPPort = 139;
         public const int DirectTCPPort = 445;
@@ -218,7 +215,7 @@ namespace SMBLibrary.Server
                     return;
                 }
 #endif
-                ProcessMessage(message, state);
+                ProcessSMB1Message(message, state);
             }
             else
             {
@@ -228,313 +225,6 @@ namespace SMBLibrary.Server
             }
         }
 
-        public void ProcessMessage(SMB1Message message, SMB1ConnectionState state)
-        {
-            SMB1Message reply = new SMB1Message();
-            PrepareResponseHeader(reply, message);
-            List<SMB1Command> sendQueue = new List<SMB1Command>();
-
-            foreach (SMB1Command command in message.Commands)
-            {
-                SMB1Command response = ProcessCommand(reply.Header, command, state, sendQueue);
-                if (response != null)
-                {
-                    reply.Commands.Add(response);
-                }
-                if (reply.Header.Status != NTStatus.STATUS_SUCCESS)
-                {
-                    break;
-                }
-            }
-
-            if (reply.Commands.Count > 0)
-            {
-                TrySendMessage(state, reply);
-
-                foreach (SMB1Command command in sendQueue)
-                {
-                    SMB1Message secondaryReply = new SMB1Message();
-                    secondaryReply.Header = reply.Header;
-                    secondaryReply.Commands.Add(command);
-                    TrySendMessage(state, secondaryReply);
-                }
-            }
-        }
-
-        /// <summary>
-        /// May return null
-        /// </summary>
-        public SMB1Command ProcessCommand(SMB1Header header, SMB1Command command, SMB1ConnectionState state, List<SMB1Command> sendQueue)
-        {
-            if (command is NegotiateRequest)
-            {
-                NegotiateRequest request = (NegotiateRequest)command;
-                if (request.Dialects.Contains(SMBServer.NTLanManagerDialect))
-                {
-                    if (EnableExtendedSecurity && header.ExtendedSecurityFlag)
-                    {
-                        return NegotiateHelper.GetNegotiateResponseExtended(request, m_serverGuid);
-                    }
-                    else
-                    {
-                        byte[] serverChallenge = m_users.GenerateServerChallenge();
-                        return NegotiateHelper.GetNegotiateResponse(header, request, serverChallenge);
-                    }
-                }
-                else
-                {
-                    return new NegotiateResponseNotSupported();
-                }
-            }
-            else if (command is SessionSetupAndXRequest)
-            {
-                SessionSetupAndXRequest request = (SessionSetupAndXRequest)command;
-                state.MaxBufferSize = request.MaxBufferSize;
-                return NegotiateHelper.GetSessionSetupResponse(header, request, m_users, state);
-            }
-            else if (command is SessionSetupAndXRequestExtended)
-            {
-                SessionSetupAndXRequestExtended request = (SessionSetupAndXRequestExtended)command;
-                state.MaxBufferSize = request.MaxBufferSize;
-                return NegotiateHelper.GetSessionSetupResponseExtended(header, request, m_users, state);
-            }
-            else if (command is EchoRequest)
-            {
-                return ServerResponseHelper.GetEchoResponse((EchoRequest)command, sendQueue);
-            }
-            else if (state.IsAuthenticated(header.UID))
-            {
-                if (command is TreeConnectAndXRequest)
-                {
-                    TreeConnectAndXRequest request = (TreeConnectAndXRequest)command;
-                    return TreeConnectHelper.GetTreeConnectResponse(header, request, state, m_shares);
-                }
-                else if (command is LogoffAndXRequest)
-                {
-                    return new LogoffAndXResponse();
-                }
-                else if (state.IsTreeConnected(header.TID))
-                {
-                    string rootPath = state.GetConnectedTreePath(header.TID);
-                    ISMBShare share;
-                    if (state.IsIPC(header.TID))
-                    {
-                        share = m_services;
-                    }
-                    else
-                    {
-                        share = m_shares.GetShareFromRelativePath(rootPath);
-                    }
-
-                    if (command is CreateDirectoryRequest)
-                    {
-                        if (!(share is FileSystemShare))
-                        {
-                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        CreateDirectoryRequest request = (CreateDirectoryRequest)command;
-                        return FileSystemResponseHelper.GetCreateDirectoryResponse(header, request, (FileSystemShare)share, state);
-                    }
-                    else if (command is DeleteDirectoryRequest)
-                    {
-                        if (!(share is FileSystemShare))
-                        {
-                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        DeleteDirectoryRequest request = (DeleteDirectoryRequest)command;
-                        return FileSystemResponseHelper.GetDeleteDirectoryResponse(header, request, (FileSystemShare)share, state);
-                    }
-                    else if (command is CloseRequest)
-                    {
-                        CloseRequest request = (CloseRequest)command;
-                        return ServerResponseHelper.GetCloseResponse(header, request, share, state);
-                    }
-                    else if (command is FlushRequest)
-                    {
-                        return new FlushResponse();
-                    }
-                    else if (command is DeleteRequest)
-                    {
-                        if (!(share is FileSystemShare))
-                        {
-                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        DeleteRequest request = (DeleteRequest)command;
-                        return FileSystemResponseHelper.GetDeleteResponse(header, request, (FileSystemShare)share, state);
-                    }
-                    else if (command is RenameRequest)
-                    {
-                        if (!(share is FileSystemShare))
-                        {
-                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        RenameRequest request = (RenameRequest)command;
-                        return FileSystemResponseHelper.GetRenameResponse(header, request, (FileSystemShare)share, state);
-                    }
-                    else if (command is QueryInformationRequest)
-                    {
-                        if (!(share is FileSystemShare))
-                        {
-                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        QueryInformationRequest request = (QueryInformationRequest)command;
-                        return FileSystemResponseHelper.GetQueryInformationResponse(header, request, (FileSystemShare)share);
-                    }
-                    else if (command is SetInformationRequest)
-                    {
-                        if (!(share is FileSystemShare))
-                        {
-                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        SetInformationRequest request = (SetInformationRequest)command;
-                        return FileSystemResponseHelper.GetSetInformationResponse(header, request, (FileSystemShare)share, state);
-                    }
-                    else if (command is ReadRequest)
-                    {
-                        ReadRequest request = (ReadRequest)command;
-                        return ReadWriteResponseHelper.GetReadResponse(header, request, share, state);
-                    }
-                    else if (command is WriteRequest)
-                    {
-                        string userName = state.GetConnectedUserName(header.UID);
-                        if (share is FileSystemShare && !((FileSystemShare)share).HasWriteAccess(userName))
-                        {
-                            header.Status = NTStatus.STATUS_ACCESS_DENIED;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        WriteRequest request = (WriteRequest)command;
-                        return ReadWriteResponseHelper.GetWriteResponse(header, request, share, state);
-                    }
-                    else if (command is CheckDirectoryRequest)
-                    {
-                        if (!(share is FileSystemShare))
-                        {
-                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        CheckDirectoryRequest request = (CheckDirectoryRequest)command;
-                        return FileSystemResponseHelper.GetCheckDirectoryResponse(header, request, (FileSystemShare)share);
-                    }
-                    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)
-                    {
-                        if (!(share is FileSystemShare))
-                        {
-                            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        SetInformation2Request request = (SetInformation2Request)command;
-                        return FileSystemResponseHelper.GetSetInformation2Response(header, request, (FileSystemShare)share, state);
-                    }
-                    else if (command is LockingAndXRequest)
-                    {
-                        header.Status = NTStatus.STATUS_ACCESS_DENIED;
-                        return new ErrorResponse(CommandName.SMB_COM_LOCKING_ANDX);
-                    }
-                    else if (command is OpenAndXRequest)
-                    {
-                        OpenAndXRequest request = (OpenAndXRequest)command;
-                        return OpenAndXHelper.GetOpenAndXResponse(header, request, share, state);
-                    }
-                    else if (command is ReadAndXRequest)
-                    {
-                        ReadAndXRequest request = (ReadAndXRequest)command;
-                        return ReadWriteResponseHelper.GetReadResponse(header, request, share, state);
-                    }
-                    else if (command is WriteAndXRequest)
-                    {
-                        string userName = state.GetConnectedUserName(header.UID);
-                        if (share is FileSystemShare && !((FileSystemShare)share).HasWriteAccess(userName))
-                        {
-                            header.Status = NTStatus.STATUS_ACCESS_DENIED;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                        WriteAndXRequest request = (WriteAndXRequest)command;
-                        return ReadWriteResponseHelper.GetWriteResponse(header, request, share, state);
-                    }
-                    else if (command is FindClose2Request)
-                    {
-                        return ServerResponseHelper.GetFindClose2Request(header, (FindClose2Request)command, state);
-                    }
-                    else if (command is TreeDisconnectRequest)
-                    {
-                        TreeDisconnectRequest request = (TreeDisconnectRequest)command;
-                        return TreeConnectHelper.GetTreeDisconnectResponse(header, request, state);
-                    }
-                    else if (command is TransactionRequest) // Both TransactionRequest and Transaction2Request
-                    {
-                        TransactionRequest request = (TransactionRequest)command;
-                        try
-                        {
-                            return TransactionHelper.GetTransactionResponse(header, request, share, state, sendQueue);
-                        }
-                        catch (UnsupportedInformationLevelException)
-                        {
-                            header.Status = NTStatus.STATUS_INVALID_PARAMETER;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                    }
-                    else if (command is TransactionSecondaryRequest) // Both TransactionSecondaryRequest and Transaction2SecondaryRequest
-                    {
-                        TransactionSecondaryRequest request = (TransactionSecondaryRequest)command;
-                        try
-                        {
-                            return TransactionHelper.GetTransactionResponse(header, request, share, state, sendQueue);
-                        }
-                        catch (UnsupportedInformationLevelException)
-                        {
-                            header.Status = NTStatus.STATUS_INVALID_PARAMETER;
-                            return new ErrorResponse(command.CommandName);
-                        }
-                    }
-                    else if (command is NTTransactRequest)
-                    {
-                        NTTransactRequest request = (NTTransactRequest)command;
-                        return NTTransactHelper.GetNTTransactResponse(header, request, share, state, sendQueue);
-                    }
-                    else if (command is NTTransactSecondaryRequest)
-                    {
-                        NTTransactSecondaryRequest request = (NTTransactSecondaryRequest)command;
-                        return NTTransactHelper.GetNTTransactResponse(header, request, share, state, sendQueue);
-                    }
-                    else if (command is NTCreateAndXRequest)
-                    {
-                        NTCreateAndXRequest request = (NTCreateAndXRequest)command;
-                        return NTCreateHelper.GetNTCreateResponse(header, request, share, state);
-                    }
-                }
-                else
-                {
-                    header.Status = NTStatus.STATUS_SMB_BAD_TID;
-                    return new ErrorResponse(command.CommandName);
-                }
-            }
-
-            header.Status = NTStatus.STATUS_SMB_BAD_COMMAND;
-            return new ErrorResponse(command.CommandName);
-        }
-
-        public static void TrySendMessage(SMB1ConnectionState state, SMB1Message reply)
-        {
-            SessionMessagePacket packet = new SessionMessagePacket();
-            packet.Trailer = reply.GetBytes();
-            TrySendPacket(state, packet);
-            System.Diagnostics.Debug.Print("[{0}] Reply sent: {1} Commands, First Command: {2}, Packet length: {3}", DateTime.Now.ToString("HH:mm:ss:ffff"), reply.Commands.Count, reply.Commands[0].CommandName.ToString(), packet.Length);
-        }
-
         public static void TrySendPacket(SMB1ConnectionState state, SessionPacket response)
         {
             Socket clientSocket = state.ClientSocket;
@@ -549,32 +239,5 @@ namespace SMBLibrary.Server
             {
             }
         }
-
-        private static void PrepareResponseHeader(SMB1Message response, SMB1Message request)
-        {
-            response.Header.Status = NTStatus.STATUS_SUCCESS;
-            response.Header.Flags = HeaderFlags.CaseInsensitive | HeaderFlags.CanonicalizedPaths | HeaderFlags.Reply;
-            response.Header.Flags2 = HeaderFlags2.NTStatusCode;
-            if ((request.Header.Flags2 & HeaderFlags2.LongNamesAllowed) > 0)
-            {
-                response.Header.Flags2 |= HeaderFlags2.LongNamesAllowed | HeaderFlags2.LongNameUsed;
-            }
-            if ((request.Header.Flags2 & HeaderFlags2.ExtendedAttributes) > 0)
-            {
-                response.Header.Flags2 |= HeaderFlags2.ExtendedAttributes;
-            }
-            if ((request.Header.Flags2 & HeaderFlags2.ExtendedSecurity) > 0)
-            {
-                response.Header.Flags2 |= HeaderFlags2.ExtendedSecurity;
-            }
-            if ((request.Header.Flags2 & HeaderFlags2.Unicode) > 0)
-            {
-                response.Header.Flags2 |= HeaderFlags2.Unicode;
-            }
-            response.Header.MID = request.Header.MID;
-            response.Header.PID = request.Header.PID;
-            response.Header.UID = request.Header.UID;
-            response.Header.TID = request.Header.TID;
-        }
     }
 }