677 lines
25 KiB
C#
677 lines
25 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Security;
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using Jellyfin.Extensions;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Model.IO;
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using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.IO
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{
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/// <summary>
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/// Class ManagedFileSystem.
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/// </summary>
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public class ManagedFileSystem : IFileSystem
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{
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private static readonly bool _isEnvironmentCaseInsensitive = OperatingSystem.IsWindows();
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private static readonly char[] _invalidPathCharacters =
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{
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'\"', '<', '>', '|', '\0',
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(char)1, (char)2, (char)3, (char)4, (char)5, (char)6, (char)7, (char)8, (char)9, (char)10,
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(char)11, (char)12, (char)13, (char)14, (char)15, (char)16, (char)17, (char)18, (char)19, (char)20,
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(char)21, (char)22, (char)23, (char)24, (char)25, (char)26, (char)27, (char)28, (char)29, (char)30,
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(char)31, ':', '*', '?', '\\', '/'
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};
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private readonly ILogger<ManagedFileSystem> _logger;
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private readonly List<IShortcutHandler> _shortcutHandlers;
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private readonly string _tempPath;
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/// <summary>
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/// Initializes a new instance of the <see cref="ManagedFileSystem"/> class.
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/// </summary>
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/// <param name="logger">The <see cref="ILogger"/> instance to use.</param>
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/// <param name="applicationPaths">The <see cref="IApplicationPaths"/> instance to use.</param>
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/// <param name="shortcutHandlers">the <see cref="IShortcutHandler"/>'s to use.</param>
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public ManagedFileSystem(
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ILogger<ManagedFileSystem> logger,
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IApplicationPaths applicationPaths,
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IEnumerable<IShortcutHandler> shortcutHandlers)
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{
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_logger = logger;
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_tempPath = applicationPaths.TempDirectory;
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_shortcutHandlers = shortcutHandlers.ToList();
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}
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/// <summary>
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/// Determines whether the specified filename is shortcut.
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns><c>true</c> if the specified filename is shortcut; otherwise, <c>false</c>.</returns>
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/// <exception cref="ArgumentNullException"><paramref name="filename"/> is <c>null</c>.</exception>
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public virtual bool IsShortcut(string filename)
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{
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ArgumentException.ThrowIfNullOrEmpty(filename);
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var extension = Path.GetExtension(filename);
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return _shortcutHandlers.Any(i => string.Equals(extension, i.Extension, StringComparison.OrdinalIgnoreCase));
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}
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/// <summary>
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/// Resolves the shortcut.
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns>System.String.</returns>
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/// <exception cref="ArgumentNullException"><paramref name="filename"/> is <c>null</c>.</exception>
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public virtual string? ResolveShortcut(string filename)
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{
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ArgumentException.ThrowIfNullOrEmpty(filename);
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var extension = Path.GetExtension(filename);
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var handler = _shortcutHandlers.Find(i => string.Equals(extension, i.Extension, StringComparison.OrdinalIgnoreCase));
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return handler?.Resolve(filename);
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}
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/// <inheritdoc />
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public virtual string MakeAbsolutePath(string folderPath, string filePath)
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{
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// path is actually a stream
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if (string.IsNullOrWhiteSpace(filePath))
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{
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return filePath;
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}
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var isAbsolutePath = Path.IsPathRooted(filePath) && (!OperatingSystem.IsWindows() || filePath[0] != '\\');
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if (isAbsolutePath)
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{
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// absolute local path
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return filePath;
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}
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// unc path
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if (filePath.StartsWith(@"\\", StringComparison.Ordinal))
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{
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return filePath;
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}
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var filePathSpan = filePath.AsSpan();
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// relative path on windows
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if (filePath[0] == '\\')
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{
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filePathSpan = filePathSpan.Slice(1);
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}
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try
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{
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return Path.GetFullPath(Path.Join(folderPath, filePathSpan));
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}
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catch (ArgumentException)
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{
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return filePath;
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}
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catch (PathTooLongException)
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{
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return filePath;
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}
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catch (NotSupportedException)
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{
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return filePath;
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}
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}
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/// <summary>
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/// Creates the shortcut.
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/// </summary>
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/// <param name="shortcutPath">The shortcut path.</param>
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/// <param name="target">The target.</param>
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/// <exception cref="ArgumentNullException">The shortcutPath or target is null.</exception>
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public virtual void CreateShortcut(string shortcutPath, string target)
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{
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ArgumentException.ThrowIfNullOrEmpty(shortcutPath);
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ArgumentException.ThrowIfNullOrEmpty(target);
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var extension = Path.GetExtension(shortcutPath);
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var handler = _shortcutHandlers.Find(i => string.Equals(extension, i.Extension, StringComparison.OrdinalIgnoreCase));
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if (handler is not null)
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{
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handler.Create(shortcutPath, target);
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}
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else
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{
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throw new NotImplementedException();
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}
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}
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/// <summary>
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/// Returns a <see cref="FileSystemMetadata"/> object for the specified file or directory path.
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/// </summary>
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/// <param name="path">A path to a file or directory.</param>
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/// <returns>A <see cref="FileSystemMetadata"/> object.</returns>
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/// <remarks>If the specified path points to a directory, the returned <see cref="FileSystemMetadata"/> object's
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/// <see cref="FileSystemMetadata.IsDirectory"/> property will be set to true and all other properties will reflect the properties of the directory.</remarks>
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public virtual FileSystemMetadata GetFileSystemInfo(string path)
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{
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// Take a guess to try and avoid two file system hits, but we'll double-check by calling Exists
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if (Path.HasExtension(path))
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{
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var fileInfo = new FileInfo(path);
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if (fileInfo.Exists)
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{
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return GetFileSystemMetadata(fileInfo);
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}
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return GetFileSystemMetadata(new DirectoryInfo(path));
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}
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else
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{
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var fileInfo = new DirectoryInfo(path);
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if (fileInfo.Exists)
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{
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return GetFileSystemMetadata(fileInfo);
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}
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return GetFileSystemMetadata(new FileInfo(path));
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}
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}
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/// <summary>
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/// Returns a <see cref="FileSystemMetadata"/> object for the specified file path.
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/// </summary>
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/// <param name="path">A path to a file.</param>
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/// <returns>A <see cref="FileSystemMetadata"/> object.</returns>
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/// <remarks><para>If the specified path points to a directory, the returned <see cref="FileSystemMetadata"/> object's
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/// <see cref="FileSystemMetadata.IsDirectory"/> property and the <see cref="FileSystemMetadata.Exists"/> property will both be set to false.</para>
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/// <para>For automatic handling of files <b>and</b> directories, use <see cref="GetFileSystemInfo"/>.</para></remarks>
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public virtual FileSystemMetadata GetFileInfo(string path)
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{
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var fileInfo = new FileInfo(path);
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return GetFileSystemMetadata(fileInfo);
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}
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/// <summary>
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/// Returns a <see cref="FileSystemMetadata"/> object for the specified directory path.
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/// </summary>
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/// <param name="path">A path to a directory.</param>
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/// <returns>A <see cref="FileSystemMetadata"/> object.</returns>
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/// <remarks><para>If the specified path points to a file, the returned <see cref="FileSystemMetadata"/> object's
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/// <see cref="FileSystemMetadata.IsDirectory"/> property will be set to true and the <see cref="FileSystemMetadata.Exists"/> property will be set to false.</para>
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/// <para>For automatic handling of files <b>and</b> directories, use <see cref="GetFileSystemInfo"/>.</para></remarks>
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public virtual FileSystemMetadata GetDirectoryInfo(string path)
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{
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var fileInfo = new DirectoryInfo(path);
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return GetFileSystemMetadata(fileInfo);
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}
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private FileSystemMetadata GetFileSystemMetadata(FileSystemInfo info)
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{
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var result = new FileSystemMetadata
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{
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Exists = info.Exists,
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FullName = info.FullName,
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Extension = info.Extension,
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Name = info.Name
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};
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if (result.Exists)
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{
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result.IsDirectory = info is DirectoryInfo || (info.Attributes & FileAttributes.Directory) == FileAttributes.Directory;
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// if (!result.IsDirectory)
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// {
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// result.IsHidden = (info.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden;
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// }
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if (info is FileInfo fileInfo)
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{
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result.Length = fileInfo.Length;
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// Issue #2354 get the size of files behind symbolic links. Also Enum.HasFlag is bad as it boxes!
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if ((fileInfo.Attributes & FileAttributes.ReparsePoint) == FileAttributes.ReparsePoint)
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{
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try
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{
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using (var fileHandle = File.OpenHandle(fileInfo.FullName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
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{
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result.Length = RandomAccess.GetLength(fileHandle);
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}
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}
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catch (FileNotFoundException ex)
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{
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// Dangling symlinks cannot be detected before opening the file unfortunately...
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_logger.LogError(ex, "Reading the file size of the symlink at {Path} failed. Marking the file as not existing.", fileInfo.FullName);
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result.Exists = false;
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}
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catch (UnauthorizedAccessException ex)
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{
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_logger.LogError(ex, "Reading the file at {Path} failed due to a permissions exception.", fileInfo.FullName);
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}
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}
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}
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result.CreationTimeUtc = GetCreationTimeUtc(info);
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result.LastWriteTimeUtc = GetLastWriteTimeUtc(info);
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}
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else
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{
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result.IsDirectory = info is DirectoryInfo;
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}
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return result;
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}
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/// <summary>
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/// Takes a filename and removes invalid characters.
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns>System.String.</returns>
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/// <exception cref="ArgumentNullException">The filename is null.</exception>
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public string GetValidFilename(string filename)
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{
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var first = filename.IndexOfAny(_invalidPathCharacters);
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if (first == -1)
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{
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// Fast path for clean strings
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return filename;
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}
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return string.Create(
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filename.Length,
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(filename, _invalidPathCharacters, first),
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(chars, state) =>
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{
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state.filename.AsSpan().CopyTo(chars);
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chars[state.first++] = ' ';
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var len = chars.Length;
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foreach (var c in state._invalidPathCharacters)
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{
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for (int i = state.first; i < len; i++)
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{
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if (chars[i] == c)
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{
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chars[i] = ' ';
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}
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}
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}
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});
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}
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/// <summary>
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/// Gets the creation time UTC.
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/// </summary>
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/// <param name="info">The info.</param>
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/// <returns>DateTime.</returns>
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public DateTime GetCreationTimeUtc(FileSystemInfo info)
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{
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// This could throw an error on some file systems that have dates out of range
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try
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{
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return info.CreationTimeUtc;
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error determining CreationTimeUtc for {FullName}", info.FullName);
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return DateTime.MinValue;
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}
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}
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/// <summary>
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/// Gets the creation time UTC.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <returns>DateTime.</returns>
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public virtual DateTime GetCreationTimeUtc(string path)
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{
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return GetCreationTimeUtc(GetFileSystemInfo(path));
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}
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/// <inheritdoc />
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public virtual DateTime GetCreationTimeUtc(FileSystemMetadata info)
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{
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return info.CreationTimeUtc;
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}
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/// <inheritdoc />
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public virtual DateTime GetLastWriteTimeUtc(FileSystemMetadata info)
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{
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return info.LastWriteTimeUtc;
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}
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/// <summary>
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/// Gets the creation time UTC.
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/// </summary>
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/// <param name="info">The info.</param>
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/// <returns>DateTime.</returns>
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public DateTime GetLastWriteTimeUtc(FileSystemInfo info)
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{
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// This could throw an error on some file systems that have dates out of range
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try
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{
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return info.LastWriteTimeUtc;
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error determining LastAccessTimeUtc for {FullName}", info.FullName);
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return DateTime.MinValue;
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}
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}
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/// <summary>
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/// Gets the last write time UTC.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <returns>DateTime.</returns>
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public virtual DateTime GetLastWriteTimeUtc(string path)
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{
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return GetLastWriteTimeUtc(GetFileSystemInfo(path));
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}
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/// <inheritdoc />
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public virtual void SetHidden(string path, bool isHidden)
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{
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if (!OperatingSystem.IsWindows())
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{
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return;
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}
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var info = new FileInfo(path);
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if (info.Exists &&
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((info.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden) != isHidden)
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{
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if (isHidden)
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{
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File.SetAttributes(path, info.Attributes | FileAttributes.Hidden);
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}
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else
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{
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File.SetAttributes(path, info.Attributes & ~FileAttributes.Hidden);
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}
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}
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}
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/// <inheritdoc />
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public virtual void SetAttributes(string path, bool isHidden, bool readOnly)
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{
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if (!OperatingSystem.IsWindows())
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{
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return;
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}
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var info = new FileInfo(path);
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if (!info.Exists)
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{
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return;
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}
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if (((info.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly) == readOnly
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&& ((info.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden) == isHidden)
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{
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return;
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}
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var attributes = info.Attributes;
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if (readOnly)
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{
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attributes |= FileAttributes.ReadOnly;
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}
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else
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{
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attributes &= ~FileAttributes.ReadOnly;
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}
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if (isHidden)
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{
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attributes |= FileAttributes.Hidden;
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}
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else
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{
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attributes &= ~FileAttributes.Hidden;
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}
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File.SetAttributes(path, attributes);
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}
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/// <summary>
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/// Swaps the files.
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/// </summary>
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/// <param name="file1">The file1.</param>
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/// <param name="file2">The file2.</param>
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public virtual void SwapFiles(string file1, string file2)
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{
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ArgumentException.ThrowIfNullOrEmpty(file1);
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ArgumentException.ThrowIfNullOrEmpty(file2);
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var temp1 = Path.Combine(_tempPath, Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture));
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// Copying over will fail against hidden files
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SetHidden(file1, false);
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SetHidden(file2, false);
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Directory.CreateDirectory(_tempPath);
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File.Copy(file1, temp1, true);
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File.Copy(file2, file1, true);
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File.Copy(temp1, file2, true);
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}
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/// <inheritdoc />
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public virtual bool ContainsSubPath(string parentPath, string path)
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{
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ArgumentException.ThrowIfNullOrEmpty(parentPath);
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ArgumentException.ThrowIfNullOrEmpty(path);
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return path.Contains(
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Path.TrimEndingDirectorySeparator(parentPath) + Path.DirectorySeparatorChar,
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_isEnvironmentCaseInsensitive ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal);
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}
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/// <inheritdoc />
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public virtual bool AreEqual(string path1, string path2)
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{
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return Path.TrimEndingDirectorySeparator(path1).Equals(
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Path.TrimEndingDirectorySeparator(path2),
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_isEnvironmentCaseInsensitive ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal);
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}
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/// <inheritdoc />
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public virtual string GetFileNameWithoutExtension(FileSystemMetadata info)
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{
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if (info.IsDirectory)
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{
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return info.Name;
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}
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return Path.GetFileNameWithoutExtension(info.FullName);
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}
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/// <inheritdoc />
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public virtual bool IsPathFile(string path)
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{
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if (path.Contains("://", StringComparison.OrdinalIgnoreCase)
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&& !path.StartsWith("file://", StringComparison.OrdinalIgnoreCase))
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{
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return false;
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}
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return true;
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}
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/// <inheritdoc />
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public virtual void DeleteFile(string path)
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{
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SetAttributes(path, false, false);
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File.Delete(path);
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}
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/// <inheritdoc />
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public virtual IEnumerable<FileSystemMetadata> GetDrives()
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{
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// check for ready state to avoid waiting for drives to timeout
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// some drives on linux have no actual size or are used for other purposes
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return DriveInfo.GetDrives()
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.Where(
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d => (d.DriveType == DriveType.Fixed || d.DriveType == DriveType.Network || d.DriveType == DriveType.Removable)
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&& d.IsReady
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&& d.TotalSize != 0)
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.Select(d => new FileSystemMetadata
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{
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Name = d.Name,
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FullName = d.RootDirectory.FullName,
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IsDirectory = true
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});
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}
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/// <inheritdoc />
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public virtual IEnumerable<FileSystemMetadata> GetDirectories(string path, bool recursive = false)
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{
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return ToMetadata(new DirectoryInfo(path).EnumerateDirectories("*", GetEnumerationOptions(recursive)));
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}
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/// <inheritdoc />
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public virtual IEnumerable<FileSystemMetadata> GetFiles(string path, bool recursive = false)
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{
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return GetFiles(path, null, false, recursive);
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}
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/// <inheritdoc />
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public virtual IEnumerable<FileSystemMetadata> GetFiles(string path, IReadOnlyList<string>? extensions, bool enableCaseSensitiveExtensions, bool recursive = false)
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{
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var enumerationOptions = GetEnumerationOptions(recursive);
|
|
|
|
// On linux and osx the search pattern is case sensitive
|
|
// If we're OK with case-sensitivity, and we're only filtering for one extension, then use the native method
|
|
if ((enableCaseSensitiveExtensions || _isEnvironmentCaseInsensitive) && extensions is not null && extensions.Count == 1)
|
|
{
|
|
return ToMetadata(new DirectoryInfo(path).EnumerateFiles("*" + extensions[0], enumerationOptions));
|
|
}
|
|
|
|
var files = new DirectoryInfo(path).EnumerateFiles("*", enumerationOptions);
|
|
|
|
if (extensions is not null && extensions.Count > 0)
|
|
{
|
|
files = files.Where(i =>
|
|
{
|
|
var ext = i.Extension.AsSpan();
|
|
if (ext.IsEmpty)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return extensions.Contains(ext, StringComparison.OrdinalIgnoreCase);
|
|
});
|
|
}
|
|
|
|
return ToMetadata(files);
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public virtual IEnumerable<FileSystemMetadata> GetFileSystemEntries(string path, bool recursive = false)
|
|
{
|
|
var directoryInfo = new DirectoryInfo(path);
|
|
var enumerationOptions = GetEnumerationOptions(recursive);
|
|
|
|
return ToMetadata(directoryInfo.EnumerateFileSystemInfos("*", enumerationOptions));
|
|
}
|
|
|
|
private IEnumerable<FileSystemMetadata> ToMetadata(IEnumerable<FileSystemInfo> infos)
|
|
{
|
|
return infos.Select(GetFileSystemMetadata);
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public virtual IEnumerable<string> GetDirectoryPaths(string path, bool recursive = false)
|
|
{
|
|
return Directory.EnumerateDirectories(path, "*", GetEnumerationOptions(recursive));
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public virtual IEnumerable<string> GetFilePaths(string path, bool recursive = false)
|
|
{
|
|
return GetFilePaths(path, null, false, recursive);
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public virtual IEnumerable<string> GetFilePaths(string path, string[]? extensions, bool enableCaseSensitiveExtensions, bool recursive = false)
|
|
{
|
|
var enumerationOptions = GetEnumerationOptions(recursive);
|
|
|
|
// On linux and osx the search pattern is case sensitive
|
|
// If we're OK with case-sensitivity, and we're only filtering for one extension, then use the native method
|
|
if ((enableCaseSensitiveExtensions || _isEnvironmentCaseInsensitive) && extensions is not null && extensions.Length == 1)
|
|
{
|
|
return Directory.EnumerateFiles(path, "*" + extensions[0], enumerationOptions);
|
|
}
|
|
|
|
var files = Directory.EnumerateFiles(path, "*", enumerationOptions);
|
|
|
|
if (extensions is not null && extensions.Length > 0)
|
|
{
|
|
files = files.Where(i =>
|
|
{
|
|
var ext = Path.GetExtension(i.AsSpan());
|
|
if (ext.IsEmpty)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return extensions.Contains(ext, StringComparison.OrdinalIgnoreCase);
|
|
});
|
|
}
|
|
|
|
return files;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public virtual IEnumerable<string> GetFileSystemEntryPaths(string path, bool recursive = false)
|
|
{
|
|
try
|
|
{
|
|
return Directory.EnumerateFileSystemEntries(path, "*", GetEnumerationOptions(recursive));
|
|
}
|
|
catch (Exception ex) when (ex is UnauthorizedAccessException or DirectoryNotFoundException or SecurityException)
|
|
{
|
|
_logger.LogError(ex, "Failed to enumerate path {Path}", path);
|
|
return Enumerable.Empty<string>();
|
|
}
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public virtual bool DirectoryExists(string path)
|
|
{
|
|
return Directory.Exists(path);
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public virtual bool FileExists(string path)
|
|
{
|
|
return File.Exists(path);
|
|
}
|
|
|
|
private EnumerationOptions GetEnumerationOptions(bool recursive)
|
|
{
|
|
return new EnumerationOptions
|
|
{
|
|
RecurseSubdirectories = recursive,
|
|
IgnoreInaccessible = true,
|
|
// Don't skip any files.
|
|
AttributesToSkip = 0
|
|
};
|
|
}
|
|
}
|
|
}
|