474 lines
14 KiB
C#
474 lines
14 KiB
C#
using System;
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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 System.Security.AccessControl;
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using System.Security.Principal;
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using NLog;
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using NzbDrone.Common.EnsureThat;
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using NzbDrone.Common.EnvironmentInfo;
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using NzbDrone.Common.Instrumentation;
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namespace NzbDrone.Common
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{
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public interface IDiskProvider
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{
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DateTime GetLastFolderWrite(string path);
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DateTime GetLastFileWrite(string path);
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void EnsureFolder(string path);
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bool FolderExists(string path);
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bool FileExists(string path);
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bool FileExists(string path, bool caseSensitive);
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string[] GetDirectories(string path);
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string[] GetFiles(string path, SearchOption searchOption);
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long GetFolderSize(string path);
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long GetFileSize(string path);
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void CreateFolder(string path);
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void CopyFolder(string source, string destination);
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void MoveFolder(string source, string destination);
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void DeleteFile(string path);
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void MoveFile(string source, string destination);
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void DeleteFolder(string path, bool recursive);
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void InheritFolderPermissions(string filename);
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long? GetAvailableSpace(string path);
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string ReadAllText(string filePath);
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void WriteAllText(string filename, string contents);
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void FileSetLastWriteTimeUtc(string path, DateTime dateTime);
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void FolderSetLastWriteTimeUtc(string path, DateTime dateTime);
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bool IsFileLocked(string path);
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string GetPathRoot(string path);
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void SetPermissions(string filename, WellKnownSidType accountSid, FileSystemRights rights, AccessControlType controlType);
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bool IsParent(string parentPath, string childPath);
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FileAttributes GetFileAttributes(string path);
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void EmptyFolder(string path);
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}
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public class DiskProvider : IDiskProvider
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{
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enum TransferAction
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{
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Copy,
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Move
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}
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[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
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[return: MarshalAs(UnmanagedType.Bool)]
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static extern bool GetDiskFreeSpaceEx(string lpDirectoryName,
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out ulong lpFreeBytesAvailable,
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out ulong lpTotalNumberOfBytes,
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out ulong lpTotalNumberOfFreeBytes);
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private static readonly Logger Logger = NzbDroneLogger.GetLogger();
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public DateTime GetLastFolderWrite(string path)
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{
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Ensure.That(() => path).IsValidPath();
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if (!FolderExists(path))
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{
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throw new DirectoryNotFoundException("Directory doesn't exist. " + path);
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}
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var dirFiles = GetFiles(path, SearchOption.AllDirectories).ToList();
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if (!dirFiles.Any())
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{
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return new DirectoryInfo(path).LastWriteTimeUtc;
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}
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return dirFiles.Select(f => new FileInfo(f))
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.Max(c => c.LastWriteTimeUtc);
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}
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public DateTime GetLastFileWrite(string path)
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{
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Ensure.That(() => path).IsValidPath();
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if (!FileExists(path))
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{
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throw new FileNotFoundException("File doesn't exist: " + path);
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}
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return new FileInfo(path).LastWriteTimeUtc;
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}
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public void EnsureFolder(string path)
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{
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if (!FolderExists(path))
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{
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CreateFolder(path);
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}
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}
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public bool FolderExists(string path)
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{
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Ensure.That(() => path).IsValidPath();
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return Directory.Exists(path);
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}
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public bool FileExists(string path)
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{
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Ensure.That(() => path).IsValidPath();
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return File.Exists(path);
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}
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public bool FileExists(string path, bool caseSensitive)
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{
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if (caseSensitive)
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{
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return FileExists(path) && path == path.GetActualCasing();
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}
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return FileExists(path);
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}
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public string[] GetDirectories(string path)
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{
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Ensure.That(() => path).IsValidPath();
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return Directory.GetDirectories(path);
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}
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public string[] GetFiles(string path, SearchOption searchOption)
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{
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Ensure.That(() => path).IsValidPath();
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return Directory.GetFiles(path, "*.*", searchOption);
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}
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public long GetFolderSize(string path)
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{
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Ensure.That(() => path).IsValidPath();
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return GetFiles(path, SearchOption.AllDirectories).Sum(e => new FileInfo(e).Length);
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}
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public long GetFileSize(string path)
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{
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Ensure.That(() => path).IsValidPath();
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if (!FileExists(path))
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{
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throw new FileNotFoundException("File doesn't exist: " + path);
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}
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var fi = new FileInfo(path);
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return fi.Length;
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}
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public void CreateFolder(string path)
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{
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Ensure.That(() => path).IsValidPath();
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Directory.CreateDirectory(path);
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}
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public void CopyFolder(string source, string destination)
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{
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Ensure.That(() => source).IsValidPath();
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Ensure.That(() => destination).IsValidPath();
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TransferFolder(source, destination, TransferAction.Copy);
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}
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public void MoveFolder(string source, string destination)
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{
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Ensure.That(() => source).IsValidPath();
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Ensure.That(() => destination).IsValidPath();
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try
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{
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TransferFolder(source, destination, TransferAction.Move);
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DeleteFolder(source, true);
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}
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catch (Exception e)
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{
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e.Data.Add("Source", source);
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e.Data.Add("Destination", destination);
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throw;
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}
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}
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private void TransferFolder(string source, string target, TransferAction transferAction)
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{
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Ensure.That(() => source).IsValidPath();
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Ensure.That(() => target).IsValidPath();
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Logger.Trace("{0} {1} -> {2}", transferAction, source, target);
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var sourceFolder = new DirectoryInfo(source);
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var targetFolder = new DirectoryInfo(target);
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if (!targetFolder.Exists)
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{
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targetFolder.Create();
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}
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foreach (var subDir in sourceFolder.GetDirectories())
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{
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TransferFolder(subDir.FullName, Path.Combine(target, subDir.Name), transferAction);
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}
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foreach (var sourceFile in sourceFolder.GetFiles("*.*", SearchOption.TopDirectoryOnly))
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{
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var destFile = Path.Combine(target, sourceFile.Name);
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Logger.Trace("{0} {1} -> {2}", transferAction, sourceFile, destFile);
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switch (transferAction)
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{
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case TransferAction.Copy:
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{
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sourceFile.CopyTo(destFile, true);
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break;
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}
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case TransferAction.Move:
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{
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MoveFile(sourceFile.FullName, destFile);
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break;
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}
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}
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}
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}
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public void DeleteFile(string path)
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{
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Ensure.That(() => path).IsValidPath();
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Logger.Trace("Deleting file: {0}", path);
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RemoveReadOnly(path);
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File.Delete(path);
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}
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public void MoveFile(string source, string destination)
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{
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Ensure.That(() => source).IsValidPath();
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Ensure.That(() => destination).IsValidPath();
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if (source.PathEquals(destination))
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{
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Logger.Warn("Source and destination can't be the same {0}", source);
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return;
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}
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if (FileExists(destination))
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{
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DeleteFile(destination);
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}
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RemoveReadOnly(source);
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File.Move(source, destination);
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}
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public void DeleteFolder(string path, bool recursive)
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{
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Ensure.That(() => path).IsValidPath();
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Directory.Delete(path, recursive);
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}
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public void InheritFolderPermissions(string filename)
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{
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Ensure.That(() => filename).IsValidPath();
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try
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{
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var fs = File.GetAccessControl(filename);
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fs.SetAccessRuleProtection(false, false);
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File.SetAccessControl(filename, fs);
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}
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catch (NotImplementedException)
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{
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if (!OsInfo.IsLinux)
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{
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throw;
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}
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}
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}
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public long? GetAvailableSpace(string path)
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{
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Ensure.That(() => path).IsValidPath();
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var root = GetPathRoot(path);
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if (!FolderExists(root))
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throw new DirectoryNotFoundException(root);
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if (OsInfo.IsLinux)
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{
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var drives = DriveInfo.GetDrives();
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foreach (var drive in drives)
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{
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try
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{
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if (drive.IsReady && path.StartsWith(drive.Name, StringComparison.CurrentCultureIgnoreCase))
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{
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return drive.AvailableFreeSpace;
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}
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}
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catch (InvalidOperationException e)
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{
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Logger.ErrorException("Couldn't get free space for " + path, e);
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}
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}
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return null;
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}
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return DriveFreeSpaceEx(root);
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}
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private static long DriveFreeSpaceEx(string folderName)
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{
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if (string.IsNullOrEmpty(folderName))
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{
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throw new ArgumentNullException("folderName");
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}
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if (!folderName.EndsWith("\\"))
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{
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folderName += '\\';
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}
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ulong free = 0;
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ulong dummy1 = 0;
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ulong dummy2 = 0;
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if (GetDiskFreeSpaceEx(folderName, out free, out dummy1, out dummy2))
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{
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return (long)free;
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}
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return 0;
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}
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public string ReadAllText(string filePath)
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{
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Ensure.That(() => filePath).IsValidPath();
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return File.ReadAllText(filePath);
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}
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public void WriteAllText(string filename, string contents)
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{
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Ensure.That(() => filename).IsValidPath();
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RemoveReadOnly(filename);
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File.WriteAllText(filename, contents);
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}
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public void FileSetLastWriteTimeUtc(string path, DateTime dateTime)
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{
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Ensure.That(() => path).IsValidPath();
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File.SetLastWriteTimeUtc(path, dateTime);
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}
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public void FolderSetLastWriteTimeUtc(string path, DateTime dateTime)
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{
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Ensure.That(() => path).IsValidPath();
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Directory.SetLastWriteTimeUtc(path, dateTime);
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}
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public bool IsFileLocked(string file)
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{
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try
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{
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using (File.Open(file, FileMode.Open, FileAccess.Read, FileShare.None))
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{
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return false;
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}
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}
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catch (IOException)
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{
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return true;
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}
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}
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public string GetPathRoot(string path)
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{
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Ensure.That(() => path).IsValidPath();
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return Path.GetPathRoot(path);
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}
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public void SetPermissions(string filename, WellKnownSidType accountSid, FileSystemRights rights, AccessControlType controlType)
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{
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try
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{
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var sid = new SecurityIdentifier(accountSid, null);
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var directoryInfo = new DirectoryInfo(filename);
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var directorySecurity = directoryInfo.GetAccessControl();
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var accessRule = new FileSystemAccessRule(sid, rights,
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InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit,
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PropagationFlags.None, controlType);
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directorySecurity.AddAccessRule(accessRule);
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directoryInfo.SetAccessControl(directorySecurity);
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}
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catch (Exception e)
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{
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Logger.WarnException(string.Format("Couldn't set permission for {0}. account:{1} rights:{2} accessControlType:{3}", filename, accountSid, rights, controlType), e);
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throw;
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}
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}
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public bool IsParent(string parentPath, string childPath)
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{
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parentPath = parentPath.TrimEnd(Path.DirectorySeparatorChar);
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childPath = childPath.TrimEnd(Path.DirectorySeparatorChar);
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var parent = new DirectoryInfo(parentPath);
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var child = new DirectoryInfo(childPath);
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while (child.Parent != null)
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{
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if (child.Parent.FullName == parent.FullName)
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{
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return true;
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}
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child = child.Parent;
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}
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return false;
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}
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private static void RemoveReadOnly(string path)
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{
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if (File.Exists(path))
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{
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var newAttributes = File.GetAttributes(path) & ~(FileAttributes.ReadOnly);
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File.SetAttributes(path, newAttributes);
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}
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}
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public FileAttributes GetFileAttributes(string path)
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{
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return File.GetAttributes(path);
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}
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public void EmptyFolder(string path)
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{
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Ensure.That(() => path).IsValidPath();
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foreach (var file in GetFiles(path, SearchOption.TopDirectoryOnly))
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{
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DeleteFile(file);
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}
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foreach (var directory in GetDirectories(path))
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{
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DeleteFolder(directory, true);
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}
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}
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}
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} |