Kenneth Skovhede
1716d09b51
Made the SMBShareConnection slightly more robust. Introduced v2 List API to S3 backend, currently it retains v1 as the default. Changed S3 backends to not recurse, potentially making smaller listings. This option can be disabled if it breaks things. Added support for relative paths in the SSH backend.
104 lines
4.4 KiB
C#
104 lines
4.4 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.Runtime.CompilerServices;
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using Duplicati.Library.Common.IO;
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using Duplicati.Library.Interface;
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namespace Duplicati.Library.SourceProvider;
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/// <summary>
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/// A source provider that wraps a backend
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/// </summary>
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/// <param name="backend">The backend to wrap</param>
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public class BackendSourceProvider(IFolderEnabledBackend backend) : ISourceProvider, ISourceProviderModule
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{
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/// <summary>
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/// The wrapped backend
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/// </summary>
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public IFolderEnabledBackend WrappedBackend => backend;
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/// <summary>
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/// The path key unique for the destination
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/// </summary>
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public string PathKey => backend.PathKey;
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/// <inheritdoc/>
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public string Key => backend.ProtocolKey;
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/// <inheritdoc/>
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public string DisplayName => backend.DisplayName;
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/// <inheritdoc/>
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public IList<ICommandLineArgument> SupportedCommands => backend.SupportedCommands;
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/// <inheritdoc/>
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public IAsyncEnumerable<ISourceFileEntry> Enumerate(CancellationToken cancellationToken)
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=> new[] { new BackendSourceFileEntry(this, "", true, true, new DateTime(0), new DateTime(0), 0) }.ToAsyncEnumerable();
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/// <inheritdoc/>
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public Task<ISourceFileEntry?> GetEntry(string path, bool isFolder, CancellationToken cancellationToken)
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=> backend.GetEntryAsync(path, cancellationToken);
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/// <inheritdoc/>
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public void Dispose()
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{
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WrappedBackend.Dispose();
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GC.SuppressFinalize(this);
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}
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/// <summary>
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/// Helper function to use a List function that returns IFileEntry and convert it to ISourceFileEntry
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/// </summary>
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/// <param name="prefix">The prefix to hide from the caller</param>
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/// <param name="path">The logical path to list</param>
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/// <param name="listFunction">The function that returns the IFileEntry items</param>
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/// <param name="cancellationToken">The cancellation token</param>
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/// <returns>The list of source file entries</returns>
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public async IAsyncEnumerable<ISourceFileEntry> ListFromFileEntryAsync(string prefix, string path, Func<string, CancellationToken, IAsyncEnumerable<IFileEntry>> listFunction, [EnumeratorCancellation] CancellationToken cancellationToken)
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{
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if (!string.IsNullOrWhiteSpace(prefix) && !prefix.EndsWith("/", StringComparison.Ordinal))
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prefix += "/";
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// Logic here is that the prefix is invisible to the caller, so we add it to the prefix to filter the results
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// and remove it from the name to make the prefix invisible.
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// The input path is preserved so the output looks like a "full path" to the caller.
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var filterPath = prefix + path;
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if (filterPath != "" && !filterPath.EndsWith("/", StringComparison.Ordinal))
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filterPath += "/";
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await foreach (var f in listFunction(filterPath, cancellationToken).ConfigureAwait(false))
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{
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if (!f.Name.StartsWith(filterPath, StringComparison.Ordinal))
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continue;
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((FileEntry)f).Name = f.Name.Substring(filterPath.Length);
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// Skip self and sub-folder items
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if (f.Name.Length == 0 || f.Name[0..^1].Contains("/"))
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continue;
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yield return BackendSourceFileEntry.FromFileEntry(this, path, f);
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}
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}
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}
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