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705 lines
24 KiB
705 lines
24 KiB
#pragma warning disable CS1591
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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.Runtime.InteropServices;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.System;
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using Microsoft.Extensions.Logging;
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using OperatingSystem = MediaBrowser.Common.System.OperatingSystem;
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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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protected ILogger<ManagedFileSystem> Logger;
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private readonly List<IShortcutHandler> _shortcutHandlers = new List<IShortcutHandler>();
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private readonly string _tempPath;
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private static readonly bool _isEnvironmentCaseInsensitive = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
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public ManagedFileSystem(
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ILogger<ManagedFileSystem> logger,
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IApplicationPaths applicationPaths)
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{
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Logger = logger;
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_tempPath = applicationPaths.TempDirectory;
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}
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public virtual void AddShortcutHandler(IShortcutHandler handler)
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{
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_shortcutHandlers.Add(handler);
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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">filename</exception>
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public virtual bool IsShortcut(string filename)
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{
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if (string.IsNullOrEmpty(filename))
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{
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throw new ArgumentNullException(nameof(filename));
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}
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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">filename</exception>
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public virtual string ResolveShortcut(string filename)
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{
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if (string.IsNullOrEmpty(filename))
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{
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throw new ArgumentNullException(nameof(filename));
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}
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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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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) || filePath.Contains("://", StringComparison.Ordinal))
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{
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return filePath;
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}
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if (filePath.Length > 3 && filePath[1] == ':' && filePath[2] == '/')
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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 firstChar = filePath[0];
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if (firstChar == '/')
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{
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// for this we don't really know
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return filePath;
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}
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// relative path
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if (firstChar == '\\')
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{
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filePath = filePath.Substring(1);
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}
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try
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{
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return Path.GetFullPath(Path.Combine(folderPath, filePath));
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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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if (string.IsNullOrEmpty(shortcutPath))
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{
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throw new ArgumentNullException(nameof(shortcutPath));
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}
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if (string.IsNullOrEmpty(target))
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{
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throw new ArgumentNullException(nameof(target));
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}
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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 != 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
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if (fileInfo.Attributes.HasFlag(FileAttributes.ReparsePoint))
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{
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try
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{
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using (Stream thisFileStream = File.OpenRead(fileInfo.FullName))
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{
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result.Length = thisFileStream.Length;
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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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}
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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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private static ExtendedFileSystemInfo GetExtendedFileSystemInfo(string path)
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{
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var result = new ExtendedFileSystemInfo();
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var info = new FileInfo(path);
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if (info.Exists)
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{
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result.Exists = true;
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var attributes = info.Attributes;
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result.IsHidden = (attributes & FileAttributes.Hidden) == FileAttributes.Hidden;
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result.IsReadOnly = (attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly;
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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 invalid = Path.GetInvalidFileNameChars();
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var first = filename.IndexOfAny(invalid);
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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, invalid, 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.invalid)
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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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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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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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public virtual void SetHidden(string path, bool isHidden)
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{
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if (OperatingSystem.Id != OperatingSystemId.Windows)
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{
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return;
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}
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var info = GetExtendedFileSystemInfo(path);
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if (info.Exists && info.IsHidden != isHidden)
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{
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if (isHidden)
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{
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File.SetAttributes(path, File.GetAttributes(path) | FileAttributes.Hidden);
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}
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else
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{
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var attributes = File.GetAttributes(path);
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attributes = RemoveAttribute(attributes, FileAttributes.Hidden);
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File.SetAttributes(path, attributes);
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}
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}
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}
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public virtual void SetAttributes(string path, bool isHidden, bool isReadOnly)
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{
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if (OperatingSystem.Id != OperatingSystemId.Windows)
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{
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return;
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}
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var info = GetExtendedFileSystemInfo(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.IsReadOnly == isReadOnly && info.IsHidden == isHidden)
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{
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return;
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}
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var attributes = File.GetAttributes(path);
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if (isReadOnly)
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{
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attributes = attributes | FileAttributes.ReadOnly;
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}
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else
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{
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attributes = RemoveAttribute(attributes, FileAttributes.ReadOnly);
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}
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if (isHidden)
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{
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attributes = attributes | FileAttributes.Hidden;
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}
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else
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{
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attributes = RemoveAttribute(attributes, FileAttributes.Hidden);
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}
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File.SetAttributes(path, attributes);
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}
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private static FileAttributes RemoveAttribute(FileAttributes attributes, FileAttributes attributesToRemove)
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{
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return attributes & ~attributesToRemove;
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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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if (string.IsNullOrEmpty(file1))
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{
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throw new ArgumentNullException(nameof(file1));
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}
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if (string.IsNullOrEmpty(file2))
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{
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throw new ArgumentNullException(nameof(file2));
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}
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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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public virtual bool ContainsSubPath(string parentPath, string path)
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{
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if (string.IsNullOrEmpty(parentPath))
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{
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throw new ArgumentNullException(nameof(parentPath));
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}
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException(nameof(path));
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}
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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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public virtual string NormalizePath(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException(nameof(path));
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}
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if (path.EndsWith(":\\", StringComparison.OrdinalIgnoreCase))
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{
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return path;
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}
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return Path.TrimEndingDirectorySeparator(path);
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}
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public virtual bool AreEqual(string path1, string path2)
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{
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if (path1 == null && path2 == null)
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{
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return true;
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}
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if (path1 == null || path2 == null)
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{
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return false;
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}
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return string.Equals(
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NormalizePath(path1),
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NormalizePath(path2),
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_isEnvironmentCaseInsensitive ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal);
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}
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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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public virtual bool IsPathFile(string path)
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{
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// Cannot use Path.IsPathRooted because it returns false under mono when using windows-based paths, e.g. C:\\
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if (path.IndexOf("://", StringComparison.OrdinalIgnoreCase) != -1 &&
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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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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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public virtual List<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
|
|
return DriveInfo.GetDrives().Where(d => d.IsReady && d.TotalSize != 0 && d.DriveType != DriveType.Ram)
|
|
.Select(d => new FileSystemMetadata
|
|
{
|
|
Name = d.Name,
|
|
FullName = d.RootDirectory.FullName,
|
|
IsDirectory = true
|
|
}).ToList();
|
|
}
|
|
|
|
public virtual IEnumerable<FileSystemMetadata> GetDirectories(string path, bool recursive = false)
|
|
{
|
|
return ToMetadata(new DirectoryInfo(path).EnumerateDirectories("*", GetEnumerationOptions(recursive)));
|
|
}
|
|
|
|
public virtual IEnumerable<FileSystemMetadata> GetFiles(string path, bool recursive = false)
|
|
{
|
|
return GetFiles(path, null, false, recursive);
|
|
}
|
|
|
|
public virtual IEnumerable<FileSystemMetadata> GetFiles(string path, IReadOnlyList<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 != null && extensions.Count == 1)
|
|
{
|
|
return ToMetadata(new DirectoryInfo(path).EnumerateFiles("*" + extensions[0], enumerationOptions));
|
|
}
|
|
|
|
var files = new DirectoryInfo(path).EnumerateFiles("*", enumerationOptions);
|
|
|
|
if (extensions != null && extensions.Count > 0)
|
|
{
|
|
files = files.Where(i =>
|
|
{
|
|
var ext = i.Extension;
|
|
if (ext == null)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return extensions.Contains(ext, StringComparer.OrdinalIgnoreCase);
|
|
});
|
|
}
|
|
|
|
return ToMetadata(files);
|
|
}
|
|
|
|
public virtual IEnumerable<FileSystemMetadata> GetFileSystemEntries(string path, bool recursive = false)
|
|
{
|
|
var directoryInfo = new DirectoryInfo(path);
|
|
var enumerationOptions = GetEnumerationOptions(recursive);
|
|
|
|
return ToMetadata(directoryInfo.EnumerateDirectories("*", enumerationOptions))
|
|
.Concat(ToMetadata(directoryInfo.EnumerateFiles("*", enumerationOptions)));
|
|
}
|
|
|
|
private IEnumerable<FileSystemMetadata> ToMetadata(IEnumerable<FileSystemInfo> infos)
|
|
{
|
|
return infos.Select(GetFileSystemMetadata);
|
|
}
|
|
|
|
public virtual IEnumerable<string> GetDirectoryPaths(string path, bool recursive = false)
|
|
{
|
|
return Directory.EnumerateDirectories(path, "*", GetEnumerationOptions(recursive));
|
|
}
|
|
|
|
public virtual IEnumerable<string> GetFilePaths(string path, bool recursive = false)
|
|
{
|
|
return GetFilePaths(path, null, false, recursive);
|
|
}
|
|
|
|
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 != null && extensions.Length == 1)
|
|
{
|
|
return Directory.EnumerateFiles(path, "*" + extensions[0], enumerationOptions);
|
|
}
|
|
|
|
var files = Directory.EnumerateFiles(path, "*", enumerationOptions);
|
|
|
|
if (extensions != null && extensions.Length > 0)
|
|
{
|
|
files = files.Where(i =>
|
|
{
|
|
var ext = Path.GetExtension(i);
|
|
if (ext == null)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return extensions.Contains(ext, StringComparer.OrdinalIgnoreCase);
|
|
});
|
|
}
|
|
|
|
return files;
|
|
}
|
|
|
|
public virtual IEnumerable<string> GetFileSystemEntryPaths(string path, bool recursive = false)
|
|
{
|
|
return Directory.EnumerateFileSystemEntries(path, "*", GetEnumerationOptions(recursive));
|
|
}
|
|
|
|
private EnumerationOptions GetEnumerationOptions(bool recursive)
|
|
{
|
|
return new EnumerationOptions
|
|
{
|
|
RecurseSubdirectories = recursive,
|
|
IgnoreInaccessible = true,
|
|
// Don't skip any files.
|
|
AttributesToSkip = 0
|
|
};
|
|
}
|
|
}
|
|
}
|