/* Copyright (C) 2008-2016 Peter Palotas, Jeffrey Jangli, Alexandr Normuradov * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ using Microsoft.Win32.SafeHandles; using System; using System.Diagnostics.CodeAnalysis; using System.IO; using System.Runtime.InteropServices; using System.Security; using System.Security.AccessControl; namespace Alphaleonis.Win32.Filesystem { public static partial class File { #region GetChangeTime /// [AlphaFS] Gets the change date and time of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in local time. /// The file for which to obtain creation date and time information. /// Indicates the format of the path parameter(s). [SecurityCritical] public static DateTime GetChangeTime(string path, PathFormat pathFormat) { return GetChangeTimeCore(false, null, null, path, false, pathFormat); } /// [AlphaFS] Gets the change date and time of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in local time. /// The file for which to obtain creation date and time information. [SecurityCritical] public static DateTime GetChangeTime(string path) { return GetChangeTimeCore(false, null, null, path, false, PathFormat.RelativePath); } /// [AlphaFS] Gets the change date and time of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in local time. /// An open handle to the file or directory from which to retrieve information. [SecurityCritical] public static DateTime GetChangeTime(SafeFileHandle safeHandle) { return GetChangeTimeCore(false, null, safeHandle, null, false, PathFormat.LongFullPath); } /// [AlphaFS] Gets the change date and time of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in local time. /// The transaction. /// The file for which to obtain creation date and time information. /// Indicates the format of the path parameter(s). [SecurityCritical] public static DateTime GetChangeTimeTransacted(KernelTransaction transaction, string path, PathFormat pathFormat) { return GetChangeTimeCore(false, transaction, null, path, false, pathFormat); } /// [AlphaFS] Gets the change date and time of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in local time. /// The transaction. /// The file for which to obtain creation date and time information. [SecurityCritical] public static DateTime GetChangeTimeTransacted(KernelTransaction transaction, string path) { return GetChangeTimeCore(false, transaction, null, path, false, PathFormat.RelativePath); } #endregion // GetChangeTime #region GetChangeTimeUtc /// [AlphaFS] Gets the change date and time, in Coordinated Universal Time (UTC) format, of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in UTC time. /// The file for which to obtain change date and time information, in Coordinated Universal Time (UTC) format. /// Indicates the format of the path parameter(s). [SecurityCritical] public static DateTime GetChangeTimeUtc(string path, PathFormat pathFormat) { return GetChangeTimeCore(false, null, null, path, true, pathFormat); } /// [AlphaFS] Gets the change date and time, in Coordinated Universal Time (UTC) format, of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in UTC time. /// The file for which to obtain change date and time information, in Coordinated Universal Time (UTC) format. [SecurityCritical] public static DateTime GetChangeTimeUtc(string path) { return GetChangeTimeCore(false, null, null, path, true, PathFormat.RelativePath); } /// [AlphaFS] Gets the change date and time, in Coordinated Universal Time (UTC) format, of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in UTC time. /// An open handle to the file or directory from which to retrieve information. [SecurityCritical] public static DateTime GetChangeTimeUtc(SafeFileHandle safeHandle) { return GetChangeTimeCore(false, null, safeHandle, null, true, PathFormat.LongFullPath); } /// [AlphaFS] Gets the change date and time, in Coordinated Universal Time (UTC) format, of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in UTC time. /// The transaction. /// The file for which to obtain change date and time information, in Coordinated Universal Time (UTC) format. /// Indicates the format of the path parameter(s). [SecurityCritical] public static DateTime GetChangeTimeUtcTransacted(KernelTransaction transaction, string path, PathFormat pathFormat) { return GetChangeTimeCore(false, transaction, null, path, true, pathFormat); } /// [AlphaFS] Gets the change date and time, in Coordinated Universal Time (UTC) format, of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in UTC time. /// The transaction. /// The file for which to obtain change date and time information, in Coordinated Universal Time (UTC) format. [SecurityCritical] public static DateTime GetChangeTimeUtcTransacted(KernelTransaction transaction, string path) { return GetChangeTimeCore(false, transaction, null, path, true, PathFormat.RelativePath); } #endregion // GetChangeTimeUtc #region Internal Methods /// Gets the change date and time of the specified file. /// A structure set to the change date and time for the specified file. This value is expressed in local time. /// Use either or , not both. /// /// /// /// Specifies that is a file or directory. /// The transaction. /// An open handle to the file or directory from which to retrieve information. /// The file or directory for which to obtain creation date and time information. /// gets the Coordinated Universal Time (UTC), gets the local time. /// Indicates the format of the path parameter(s). [SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification = "Disposing is under control.")] [SecurityCritical] internal static DateTime GetChangeTimeCore(bool isFolder, KernelTransaction transaction, SafeFileHandle safeHandle, string path, bool getUtc, PathFormat pathFormat) { if (!NativeMethods.IsAtLeastWindowsVista) throw new PlatformNotSupportedException(Resources.Requires_Windows_Vista_Or_Higher); bool callerHandle = safeHandle != null; if (!callerHandle) { if (pathFormat != PathFormat.LongFullPath && Utils.IsNullOrWhiteSpace(path)) throw new ArgumentNullException("path"); string pathLp = Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.RemoveTrailingDirectorySeparator | GetFullPathOptions.CheckInvalidPathChars); safeHandle = CreateFileCore(transaction, pathLp, isFolder ? ExtendedFileAttributes.BackupSemantics : ExtendedFileAttributes.Normal, null, FileMode.Open, FileSystemRights.ReadData, FileShare.ReadWrite, true, PathFormat.LongFullPath); } try { NativeMethods.IsValidHandle(safeHandle); using (var safeBuffer = new SafeGlobalMemoryBufferHandle(IntPtr.Size + Marshal.SizeOf(typeof(NativeMethods.FILE_BASIC_INFO)))) { NativeMethods.FILE_BASIC_INFO fbi; if (!NativeMethods.GetFileInformationByHandleEx_FileBasicInfo(safeHandle, NativeMethods.FileInfoByHandleClass.FileBasicInfo, out fbi, (uint)safeBuffer.Capacity)) NativeError.ThrowException(Marshal.GetLastWin32Error()); safeBuffer.StructureToPtr(fbi, true); NativeMethods.FILETIME changeTime = safeBuffer.PtrToStructure(0).ChangeTime; return getUtc ? DateTime.FromFileTimeUtc(changeTime) : DateTime.FromFileTime(changeTime); } } finally { // Handle is ours, dispose. if (!callerHandle && safeHandle != null) safeHandle.Close(); } } #endregion // Internal Methods } }