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https://github.com/TalAloni/SMBLibrary.git
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234 lines
12 KiB
C#
234 lines
12 KiB
C#
/* Copyright (C) 2014-2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
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*
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* You can redistribute this program and/or modify it under the terms of
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* the GNU Lesser Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*/
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using SMBLibrary.SMB1;
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using Utilities;
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namespace SMBLibrary.Server.SMB1
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{
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internal class FileStoreResponseHelper
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{
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internal static SMB1Command GetCreateDirectoryResponse(SMB1Header header, CreateDirectoryRequest request, ISMBShare share, SMB1ConnectionState state)
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{
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SMB1Session session = state.GetSession(header.UID);
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if (share is FileSystemShare)
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{
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if (!((FileSystemShare)share).HasWriteAccess(session.SecurityContext, request.DirectoryName))
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{
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state.LogToServer(Severity.Verbose, "Create Directory '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.DirectoryName, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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}
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header.Status = SMB1FileStoreHelper.CreateDirectory(share.FileStore, request.DirectoryName, session.SecurityContext);
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if (header.Status != NTStatus.STATUS_SUCCESS)
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{
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state.LogToServer(Severity.Verbose, "Create Directory '{0}{1}' failed. NTStatus: {2}.", share.Name, request.DirectoryName, header.Status);
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return new ErrorResponse(request.CommandName);
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}
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state.LogToServer(Severity.Verbose, "Create Directory: User '{0}' created '{1}{2}'.", session.UserName, share.Name, request.DirectoryName);
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return new CreateDirectoryResponse();
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}
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internal static SMB1Command GetDeleteDirectoryResponse(SMB1Header header, DeleteDirectoryRequest request, ISMBShare share, SMB1ConnectionState state)
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{
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SMB1Session session = state.GetSession(header.UID);
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if (share is FileSystemShare)
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{
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if (!((FileSystemShare)share).HasWriteAccess(session.SecurityContext, request.DirectoryName))
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{
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state.LogToServer(Severity.Verbose, "Delete Directory '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.DirectoryName, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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}
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header.Status = SMB1FileStoreHelper.DeleteDirectory(share.FileStore, request.DirectoryName, session.SecurityContext);
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if (header.Status != NTStatus.STATUS_SUCCESS)
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{
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state.LogToServer(Severity.Verbose, "Delete Directory '{0}{1}' failed. NTStatus: {2}.", share.Name, request.DirectoryName, header.Status);
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return new ErrorResponse(request.CommandName);
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}
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state.LogToServer(Severity.Verbose, "Delete Directory: User '{0}' deleted '{1}{2}'.", session.UserName, share.Name, request.DirectoryName);
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return new DeleteDirectoryResponse();
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}
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internal static SMB1Command GetDeleteResponse(SMB1Header header, DeleteRequest request, ISMBShare share, SMB1ConnectionState state)
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{
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SMB1Session session = state.GetSession(header.UID);
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if (share is FileSystemShare)
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{
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if (!((FileSystemShare)share).HasWriteAccess(session.SecurityContext, request.FileName))
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{
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state.LogToServer(Severity.Verbose, "Delete '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.FileName, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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}
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// [MS-CIFS] This command cannot delete directories or volumes.
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header.Status = SMB1FileStoreHelper.DeleteFile(share.FileStore, request.FileName, session.SecurityContext);
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if (header.Status != NTStatus.STATUS_SUCCESS)
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{
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state.LogToServer(Severity.Verbose, "Delete '{0}{1}' failed. NTStatus: {2}.", share.Name, request.FileName, header.Status);
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return new ErrorResponse(request.CommandName);
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}
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state.LogToServer(Severity.Verbose, "Delete: User '{0}' deleted '{1}{2}'.", session.UserName, share.Name, request.FileName);
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return new DeleteResponse();
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}
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internal static SMB1Command GetRenameResponse(SMB1Header header, RenameRequest request, ISMBShare share, SMB1ConnectionState state)
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{
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SMB1Session session = state.GetSession(header.UID);
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if (share is FileSystemShare)
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{
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if (!((FileSystemShare)share).HasWriteAccess(session.SecurityContext, request.OldFileName))
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{
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state.LogToServer(Severity.Verbose, "Rename '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.OldFileName, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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if (!((FileSystemShare)share).HasWriteAccess(session.SecurityContext, request.NewFileName))
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{
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state.LogToServer(Severity.Verbose, "Rename '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.OldFileName, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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}
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header.Status = SMB1FileStoreHelper.Rename(share.FileStore, request.OldFileName, request.NewFileName, request.SearchAttributes, session.SecurityContext);
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if (header.Status != NTStatus.STATUS_SUCCESS)
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{
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state.LogToServer(Severity.Verbose, "Rename '{0}{1}' to '{0}{2}' failed. NTStatus: {3}.", share.Name, request.OldFileName, request.NewFileName, header.Status);
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return new ErrorResponse(request.CommandName);
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}
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state.LogToServer(Severity.Verbose, "Rename: User '{0}' renamed '{1}{2}' to '{1}{3}'.", session.UserName, share.Name, request.OldFileName, request.NewFileName);
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return new RenameResponse();
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}
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internal static SMB1Command GetCheckDirectoryResponse(SMB1Header header, CheckDirectoryRequest request, ISMBShare share, SMB1ConnectionState state)
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{
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SMB1Session session = state.GetSession(header.UID);
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string path = request.DirectoryName;
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if (!path.StartsWith(@"\"))
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{
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path = @"\" + path;
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}
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if (share is FileSystemShare)
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{
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if (!((FileSystemShare)share).HasReadAccess(session.SecurityContext, path))
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{
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state.LogToServer(Severity.Verbose, "Check Directory '{0}{1}' failed. User '{2}' was denied access.", share.Name, path, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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}
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header.Status = SMB1FileStoreHelper.CheckDirectory(share.FileStore, path, session.SecurityContext);
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if (header.Status != NTStatus.STATUS_SUCCESS)
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{
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return new ErrorResponse(request.CommandName);
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}
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return new CheckDirectoryResponse();
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}
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internal static SMB1Command GetQueryInformationResponse(SMB1Header header, QueryInformationRequest request, ISMBShare share, SMB1ConnectionState state)
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{
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SMB1Session session = state.GetSession(header.UID);
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string path = request.FileName;
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if (!path.StartsWith(@"\"))
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{
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path = @"\" + path;
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}
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if (share is FileSystemShare)
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{
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if (!((FileSystemShare)share).HasReadAccess(session.SecurityContext, path))
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{
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state.LogToServer(Severity.Verbose, "Query Information on '{0}{1}' failed. User '{2}' was denied access.", share.Name, path, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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}
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FileNetworkOpenInformation fileInfo;
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header.Status = SMB1FileStoreHelper.QueryInformation(out fileInfo, share.FileStore, path, session.SecurityContext);
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if (header.Status != NTStatus.STATUS_SUCCESS)
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{
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return new ErrorResponse(request.CommandName);
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}
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QueryInformationResponse response = new QueryInformationResponse();
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response.FileAttributes = SMB1FileStoreHelper.GetFileAttributes(fileInfo.FileAttributes);
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response.LastWriteTime = fileInfo.LastWriteTime;
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response.FileSize = (uint)Math.Min(UInt32.MaxValue, fileInfo.EndOfFile);
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return response;
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}
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internal static SMB1Command GetSetInformationResponse(SMB1Header header, SetInformationRequest request, ISMBShare share, SMB1ConnectionState state)
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{
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SMB1Session session = state.GetSession(header.UID);
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if (share is FileSystemShare)
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{
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if (!((FileSystemShare)share).HasWriteAccess(session.SecurityContext, request.FileName))
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{
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state.LogToServer(Severity.Verbose, "Set Information on '{0}{1}' failed. User '{2}' was denied access.", share.Name, request.FileName, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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}
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header.Status = SMB1FileStoreHelper.SetInformation(share.FileStore, request.FileName, request.FileAttributes, request.LastWriteTime, session.SecurityContext);
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if (header.Status != NTStatus.STATUS_SUCCESS)
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{
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state.LogToServer(Severity.Verbose, "Set Information on '{0}{1}' failed. NTStatus: {2}", share.Name, request.FileName, header.Status);
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return new ErrorResponse(request.CommandName);
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}
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state.LogToServer(Severity.Verbose, "Set Information on '{0}{1}' succeeded.", share.Name, request.FileName);
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return new SetInformationResponse();
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}
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internal static SMB1Command GetSetInformation2Response(SMB1Header header, SetInformation2Request request, ISMBShare share, SMB1ConnectionState state)
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{
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SMB1Session session = state.GetSession(header.UID);
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OpenFileObject openFile = session.GetOpenFileObject(request.FID);
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if (openFile == null)
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{
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header.Status = NTStatus.STATUS_SMB_BAD_FID;
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return new ErrorResponse(request.CommandName);
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}
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if (share is FileSystemShare)
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{
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if (!((FileSystemShare)share).HasWriteAccess(session.SecurityContext, openFile.Path))
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{
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state.LogToServer(Severity.Verbose, "Set Information 2 on '{0}{1}' failed. User '{2}' was denied access.", share.Name, openFile.Path, session.UserName);
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header.Status = NTStatus.STATUS_ACCESS_DENIED;
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return new ErrorResponse(request.CommandName);
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}
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}
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header.Status = SMB1FileStoreHelper.SetInformation2(share.FileStore, openFile.Handle, request.CreationDateTime, request.LastAccessDateTime, request.LastWriteDateTime);
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if (header.Status != NTStatus.STATUS_SUCCESS)
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{
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state.LogToServer(Severity.Verbose, "Set Information 2 on '{0}{1}' failed. NTStatus: {2}", share.Name, openFile.Path, header.Status);
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return new ErrorResponse(request.CommandName);
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}
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state.LogToServer(Severity.Verbose, "Set Information 2 on '{0}{1}' succeeded.", share.Name, openFile.Path);
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return new SetInformation2Response();
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}
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}
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}
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