Kenneth Skovhede
9dfe977d3f
This fixes the restore issues as all sources will now appear as if they were originally part of the source file system. The backend implementation has now been simplified so the backends only return names of entries with no path information. Most backends already do this, but the S3 backends did not, so this was fixed as well. This also clears up the interfaces, so the backend does not know about the `ISourceProviderEntry`. All mapping is done by the `BackendSourceProvider`, making it simpler to support other backends as sources.
176 lines
7.6 KiB
C#
176 lines
7.6 KiB
C#
// Copyright (C) 2025, The Duplicati Team
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// https://duplicati.com, hello@duplicati.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.Versioning;
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using Duplicati.Library.Common.IO;
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using Duplicati.Library.Interface;
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namespace Duplicati.Library.Snapshots
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{
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/// <summary>
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/// Handler for providing a snapshot like access to files and folders
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/// </summary>
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[SupportedOSPlatform("windows")]
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public sealed class NoSnapshotWindows : SnapshotBase
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{
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/// <summary>
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/// The list of folders to create snapshots of
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/// </summary>
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private readonly IEnumerable<string> m_sources;
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/// <summary>
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/// Initializes a new instance of the <see cref="NoSnapshotWindows"/> class.
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/// </summary>
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/// <param name="sources">The list of entries to create snapshots of</param>
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/// <param name="followSymlinks">A flag indicating if symlinks should be followed</param>
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public NoSnapshotWindows(IEnumerable<string> sources, bool followSymlinks)
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: base(followSymlinks)
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{
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m_sources = sources;
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}
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/// <summary>
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/// Returns the symlink target if the entry is a symlink, and null otherwise
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/// </summary>
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/// <param name="localPath">The file or folder to examine</param>
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/// <returns>The symlink target</returns>
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public override string GetSymlinkTarget(string localPath)
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=> SystemIO.IO_OS.GetSymlinkTarget(localPath);
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/// <summary>
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/// Gets the attributes for the given file or folder
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/// </summary>
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/// <returns>The file attributes</returns>
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/// <param name="localPath">The file or folder to examine</param>
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public override System.IO.FileAttributes GetAttributes(string localPath)
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=> SystemIO.IO_OS.GetFileAttributes(localPath);
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/// <summary>
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/// Returns the size of a file
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/// </summary>
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/// <param name="localPath">The full path to the file in non-snapshot format</param>
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/// <returns>The length of the file</returns>
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public override long GetFileSize(string localPath)
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=> SystemIO.IO_OS.FileLength(localPath);
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/// <summary>
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/// Gets the source folders
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/// </summary>
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public override IEnumerable<string> SourceEntries
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=> m_sources;
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/// <summary>
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/// Enumerates the root source files and folders
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/// </summary>
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/// <returns>The source files and folders</returns>
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public override IEnumerable<ISourceProviderEntry> EnumerateFilesystemEntries()
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{
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foreach (var folder in m_sources.Select(SystemIOWindows.RemoveExtendedDevicePathPrefix))
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{
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if (DirectoryExists(folder) || folder.EndsWith(System.IO.Path.DirectorySeparatorChar))
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yield return new SnapshotSourceFileEntry(this, Util.AppendDirSeparator(folder), true, true);
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else
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yield return new SnapshotSourceFileEntry(this, folder, false, true);
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}
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}
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/// <summary>
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/// Gets the last write time of a given file in UTC
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/// </summary>
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/// <param name="localPath">The full path to the file in non-snapshot format</param>
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/// <returns>The last write time of the file</returns>
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public override DateTime GetLastWriteTimeUtc(string localPath)
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=> SystemIO.IO_OS.FileGetLastWriteTimeUtc(localPath);
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/// <summary>
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/// Gets the last write time of a given file in UTC
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/// </summary>
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/// <param name="localPath">The full path to the file in non-snapshot format</param>
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/// <returns>The last write time of the file</returns>
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public override DateTime GetCreationTimeUtc(string localPath)
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=> SystemIO.IO_OS.FileGetCreationTimeUtc(localPath);
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/// <summary>
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/// Opens a file for reading
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/// </summary>
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/// <param name="localPath">The full path to the file in non-snapshot format</param>
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/// <returns>An open filestream that can be read</returns>
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public override System.IO.Stream OpenRead(string localPath)
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=> SystemIO.IO_OS.FileOpenRead(localPath);
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/// <summary>
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/// Lists all files in the given folder
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/// </summary>
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/// <returns>All folders found in the folder</returns>
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/// <param name='localFolderPath'>The folder to examinate</param>
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protected override string[] ListFiles(string localFolderPath)
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{
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string[] tmp = SystemIO.IO_OS.GetFiles(localFolderPath);
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string[] res = new string[tmp.Length];
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for (int i = 0; i < tmp.Length; i++)
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res[i] = SystemIOWindows.RemoveExtendedDevicePathPrefix(tmp[i]);
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return res;
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}
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/// <summary>
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/// Lists all folders in the given folder
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/// </summary>
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/// <returns>All folders found in the folder</returns>
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/// <param name='localFolderPath'>The folder to examinate</param>
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protected override string[] ListFolders(string localFolderPath)
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{
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string[] tmp = SystemIO.IO_OS.GetDirectories(SystemIOWindows.AddExtendedDevicePathPrefix(localFolderPath));
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string[] res = new string[tmp.Length];
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for (int i = 0; i < tmp.Length; i++)
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res[i] = SystemIOWindows.RemoveExtendedDevicePathPrefix(tmp[i]);
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return res;
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}
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/// <summary>
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/// Gets the metadata for the given file or folder
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/// </summary>
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/// <returns>The metadata for the given file or folder</returns>
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/// <param name="localPath">The file or folder to examine</param>
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/// <param name="isSymlink">A flag indicating if the target is a symlink</param>
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public override Dictionary<string, string> GetMetadata(string localPath, bool isSymlink)
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=> SystemIO.IO_OS.GetMetadata(localPath, isSymlink, FollowSymlinks);
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/// <inheritdoc />
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public override string ConvertToLocalPath(string snapshotPath)
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{
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return snapshotPath;
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}
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/// <inheritdoc />
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public override string ConvertToSnapshotPath(string localPath) =>
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// For Windows, ensure we don't store paths with extended device path prefixes (i.e., @"\\?\" or @"\\?\UNC\")
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SystemIOWindows.RemoveExtendedDevicePathPrefix(localPath);
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}
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}
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