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MyEverything.cs
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MyEverything.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;
using System.ComponentModel;
namespace MyEverything {
public class MyEverything {
static void Main(string[] args) {
Console.Write("Volumes for Scan (eg: C: D: E:): ");
List<string> volumes = Console.ReadLine().ToUpper().Split(new char[] {' '}).ToList();
MyEverythingDB db = new MyEverythingDB();
// ----------------遍历 mft,找到指定 volume 上的所有文件和文件夹----------------
Console.WriteLine("Note: If this is your first time run, it will take some time to open the NTFS Journal System.");
var enumFilesTimeStart = DateTime.Now;
foreach (string volume in volumes) {
List<MyEverythingRecord> files;
List<MyEverythingRecord> folders;
Console.WriteLine("Scanning {0}...", volume);
EnumerateVolume(volume, out files, out folders);
db.AddRecord(volume, files, MyEverythingRecordType.File);
db.AddRecord(volume, folders, MyEverythingRecordType.Folder);
}
Console.WriteLine("{0}s file and {1} folder indexed, {2}ms has spent.",
db.FileCount, db.FolderCount, DateTime.Now.Subtract(enumFilesTimeStart).TotalMilliseconds);
// -----------------------------------------------------------------------------
// ---------------------------命令模式------------------------------
Console.WriteLine("\nMyEverything version 0.0.1");
Console.WriteLine("Type ? for help.");
while (true) {
Console.Write("MyEverything> ");
string[] cmd = Console.ReadLine().Split(' ');
long fileFoundCnt;
long folderFoundCnt;
List<MyEverythingRecord> found;
switch (cmd[0].ToLower()) {
case "s":
if (!string.IsNullOrEmpty(cmd[1])) {
var searchtimestart = DateTime.Now;
found = db.FindByName(cmd[1], out fileFoundCnt, out folderFoundCnt);
found.ForEach(x => FillPath(x.VolumeName, x, db));
var searchtimeend = DateTime.Now;
if (cmd.Length == 3 && !string.IsNullOrEmpty(cmd[2])) {
using (StreamWriter sw = new StreamWriter(cmd[2], false)) {
found.ForEach(x => sw.WriteLine(string.IsNullOrEmpty(x.FullPath) ? x.Name : x.FullPath));
}
Console.WriteLine("{0} has written.", cmd[2]);
} else {
found.ForEach(x => Console.WriteLine(string.IsNullOrEmpty(x.FullPath) ? x.Name : x.FullPath));
}
Console.WriteLine("{0}s file and {1}s folder matched, {2}ms has spent.",
fileFoundCnt, folderFoundCnt, searchtimeend.Subtract(searchtimestart).TotalMilliseconds);
}
break;
case "?":
Console.WriteLine("s filename [logfile]\tSearch files and folders, \n\t\t\tif logfile specified, the result \n\t\t\twill be written to the logfile, \n\t\t\teg: s .txt");
Console.WriteLine("mo volume [debug]\tMonitor the volume, eg: mo E: debug\n\t\t\tIf debug param is specified, some debug msg\n\t\t\twill be print to screen.\n\t\t\tNote: multiple volume monitor is not stable now.");
Console.WriteLine("x\t\t\tExit this app.");
break;
case "x":
Environment.Exit(0);
break;
case "mo":
bool pridebug = (cmd.Length == 3) && (cmd[2] == "debug");
VolumeMonitor monitor = new VolumeMonitor();
monitor.RecordAddedEvent += delegate(MyEverythingRecord record) {
if (pridebug) Console.WriteLine(">>>> New file {0} added.", record.FullPath);
};
monitor.RecordDeletedEvent += delegate(MyEverythingRecord record) {
if (pridebug) Console.WriteLine(">>>> File {0} deleted.", record.FullPath);
};
monitor.RecordRenameEvent += delegate(MyEverythingRecord oldRecord, MyEverythingRecord newRecord) {
if (pridebug) Console.WriteLine(">>>> File {0} renamed to {1}.", oldRecord.FullPath, newRecord.FullPath);
};
monitor.Monitor(cmd[1].ToUpper().Split(' ').ToList(), db);
Console.WriteLine("Moniting on {0}......", cmd[1].ToUpper());
break;
}
}
}
private static void AddVolumeRootRecord(string volumeName, ref List<MyEverythingRecord> folders) {
string rightVolumeName = string.Concat("\\\\.\\", volumeName);
rightVolumeName = string.Concat(rightVolumeName, Path.DirectorySeparatorChar);
IntPtr hRoot = PInvokeWin32.CreateFile(rightVolumeName,
0,
PInvokeWin32.FILE_SHARE_READ | PInvokeWin32.FILE_SHARE_WRITE,
IntPtr.Zero,
PInvokeWin32.OPEN_EXISTING,
PInvokeWin32.FILE_FLAG_BACKUP_SEMANTICS,
IntPtr.Zero);
if (hRoot.ToInt32() != PInvokeWin32.INVALID_HANDLE_VALUE) {
PInvokeWin32.BY_HANDLE_FILE_INFORMATION fi = new PInvokeWin32.BY_HANDLE_FILE_INFORMATION();
bool bRtn = PInvokeWin32.GetFileInformationByHandle(hRoot, out fi);
if (bRtn) {
UInt64 fileIndexHigh = (UInt64)fi.FileIndexHigh;
UInt64 indexRoot = (fileIndexHigh << 32) | fi.FileIndexLow;
folders.Add(new MyEverythingRecord { FRN = indexRoot, Name = volumeName, ParentFrn = 0,
IsVolumeRoot = true, IsFolder = true, VolumeName = volumeName });
} else {
throw new IOException("GetFileInformationbyHandle() returned invalid handle",
new Win32Exception(Marshal.GetLastWin32Error()));
}
PInvokeWin32.CloseHandle(hRoot);
} else {
throw new IOException("Unable to get root frn entry", new Win32Exception(Marshal.GetLastWin32Error()));
}
}
public static void EnumerateVolume(string volumeName, out List<MyEverythingRecord> files, out List<MyEverythingRecord> flds) {
files = new List<MyEverythingRecord>();
flds = new List<MyEverythingRecord>();
IntPtr medBuffer = IntPtr.Zero;
IntPtr pVolume = IntPtr.Zero;
try {
AddVolumeRootRecord(volumeName, ref flds); // 获得指定的 volume 对应的 frn, 为将来确定 full path 时提供支持.
pVolume = GetVolumeJournalHandle(volumeName); // 获得通过 CreateFile 函数返回的 handle 值.
EnableVomuleJournal(pVolume); // 打开 Journal, 因为 Journal 默认是关闭的.
SetupMFTEnumInBuffer(ref medBuffer, pVolume); // 为 EnumerateFiles 准备好参数, 即 medBuffer
EnumerateFiles(volumeName, pVolume, medBuffer, ref files, ref flds);
} catch (Exception e) {
Console.WriteLine(e.Message, e);
Exception innerException = e.InnerException;
while (innerException != null) {
Console.WriteLine(innerException.Message, innerException);
innerException = innerException.InnerException;
}
throw new ApplicationException("Error in EnumerateVolume()", e);
} finally {
if (pVolume.ToInt32() != PInvokeWin32.INVALID_HANDLE_VALUE) {
PInvokeWin32.CloseHandle(pVolume);
if (medBuffer != IntPtr.Zero) {
Marshal.FreeHGlobal(medBuffer);
}
}
}
}
public static IntPtr GetVolumeJournalHandle(string volumeName) {
string vol = string.Concat("\\\\.\\", volumeName);
IntPtr pVolume = PInvokeWin32.CreateFile(vol,
PInvokeWin32.GENERIC_READ | PInvokeWin32.GENERIC_WRITE,
PInvokeWin32.FILE_SHARE_READ | PInvokeWin32.FILE_SHARE_WRITE,
IntPtr.Zero,
PInvokeWin32.OPEN_EXISTING,
0,
IntPtr.Zero);
if (pVolume.ToInt32() == PInvokeWin32.INVALID_HANDLE_VALUE) {
throw new IOException(string.Format("CreateFile(\"{0}\") returned invalid handle", volumeName),
new Win32Exception(Marshal.GetLastWin32Error()));
} else {
return pVolume;
}
}
unsafe public static void EnableVomuleJournal(IntPtr pVolume) {
UInt64 MaximumSize = 0x800000;
UInt64 AllocationDelta = 0x100000;
UInt32 cb;
PInvokeWin32.CREATE_USN_JOURNAL_DATA cujd;
cujd.MaximumSize = MaximumSize;
cujd.AllocationDelta = AllocationDelta;
int sizeCujd = Marshal.SizeOf(cujd);
IntPtr cujdBuffer = Marshal.AllocHGlobal(sizeCujd);
PInvokeWin32.ZeroMemory(cujdBuffer, (IntPtr) sizeCujd);
Marshal.StructureToPtr(cujd, cujdBuffer, true);
bool fOk = PInvokeWin32.DeviceIoControl(pVolume, PInvokeWin32.FSCTL_CREATE_USN_JOURNAL,
cujdBuffer, sizeCujd, IntPtr.Zero, 0, out cb, IntPtr.Zero);
if (!fOk) {
throw new IOException("DeviceIoControl() returned false", new Win32Exception(Marshal.GetLastWin32Error()));
}
}
unsafe public static bool QueryUSNJournal(IntPtr pVolume, out PInvokeWin32.USN_JOURNAL_DATA ujd, out uint bytesReturned) {
bool bOK = PInvokeWin32.DeviceIoControl(
pVolume, PInvokeWin32.FSCTL_QUERY_USN_JOURNAL,
IntPtr.Zero,
0,
out ujd,
sizeof(PInvokeWin32.USN_JOURNAL_DATA),
out bytesReturned,
IntPtr.Zero
);
return bOK;
}
unsafe private static void SetupMFTEnumInBuffer(ref IntPtr medBuffer, IntPtr pVolume) {
uint bytesReturned = 0;
PInvokeWin32.USN_JOURNAL_DATA ujd = new PInvokeWin32.USN_JOURNAL_DATA();
bool bOk = QueryUSNJournal(pVolume, out ujd, out bytesReturned);
if (bOk) {
PInvokeWin32.MFT_ENUM_DATA med;
med.StartFileReferenceNumber = 0;
med.LowUsn = 0;
med.HighUsn = ujd.NextUsn;
int sizeMftEnumData = Marshal.SizeOf(med);
medBuffer = Marshal.AllocHGlobal(sizeMftEnumData);
PInvokeWin32.ZeroMemory(medBuffer, (IntPtr) sizeMftEnumData);
Marshal.StructureToPtr(med, medBuffer, true);
} else {
throw new IOException("DeviceIoControl() returned false", new Win32Exception(Marshal.GetLastWin32Error()));
}
}
unsafe private static void EnumerateFiles(string volumeName, IntPtr pVolume, IntPtr medBuffer, ref List<MyEverythingRecord> files, ref List<MyEverythingRecord> folders) {
IntPtr pData = Marshal.AllocHGlobal(sizeof(UInt64) + 0x10000);
PInvokeWin32.ZeroMemory(pData, (IntPtr) (sizeof(UInt64) + 0x10000));
uint outBytesReturned = 0;
while (false != PInvokeWin32.DeviceIoControl(pVolume, PInvokeWin32.FSCTL_ENUM_USN_DATA, medBuffer,
sizeof(PInvokeWin32.MFT_ENUM_DATA), pData, sizeof(UInt64) + 0x10000, out outBytesReturned,
IntPtr.Zero)) {
IntPtr pUsnRecord = new IntPtr(pData.ToInt64() + sizeof(Int64));
while (outBytesReturned > 60) {
PInvokeWin32.USN_RECORD usn = new PInvokeWin32.USN_RECORD(pUsnRecord);
if (usn.IsFolder) {
folders.Add(new MyEverythingRecord {
Name = usn.FileName,
ParentFrn = usn.ParentFRN,
FRN = usn.FRN,
IsFolder = true, VolumeName = volumeName
});
} else {
files.Add(new MyEverythingRecord {
Name = usn.FileName,
ParentFrn = usn.ParentFRN,
FRN = usn.FRN,
IsFolder = false, VolumeName = volumeName
});
}
pUsnRecord = new IntPtr(pUsnRecord.ToInt64() + usn.RecordLength);
outBytesReturned -= usn.RecordLength;
}
Marshal.WriteInt64(medBuffer, Marshal.ReadInt64(pData, 0));
}
Marshal.FreeHGlobal(pData);
}
public static void FillPath(string volume, MyEverythingRecord record, MyEverythingDB db) {
if (record == null) return;
var fdSource = db.GetFolderSource(volume);
string fullpath = record.Name;
FindRecordPath(record, ref fullpath, fdSource);
record.FullPath = fullpath;
}
private static void FindRecordPath(MyEverythingRecord curRecord, ref string fullpath, Dictionary<ulong, MyEverythingRecord> fdSource) {
if (curRecord.IsVolumeRoot) return;
MyEverythingRecord nextRecord = null;
if (!fdSource.TryGetValue(curRecord.ParentFrn, out nextRecord))
return;
fullpath = string.Format("{0}{1}{2}", nextRecord.Name, Path.DirectorySeparatorChar, fullpath);
FindRecordPath(nextRecord, ref fullpath, fdSource);
}
}
}