private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
string devid = (string)e.Argument;
string devnum = new String(devid.Where(Char.IsDigit).ToArray());
RawDisk disk = new RawDisk(DiskNumberType.PhysicalDisk, Convert.ToInt32(devnum), FileAccess.Read);
long diskReadLength = disk.SizeBytes;
long totalRead = 0;
int increment = (int)(((16f * 1024f * 1024f) / disk.SectorSize) * disk.SectorSize);
byte[] input = new byte[increment];
Stopwatch sw = new Stopwatch();
FileStream fs = new FileStream(textBox1.Text, FileMode.Create);
using (RawDiskStream diskFs = disk.CreateDiskStream())
{
sw.Start();
while (true)
{
if (backgroundWorker1.CancellationPending)
{
e.Cancel = true;
diskFs.Close();
fs.Close();
break;
}
int read = (int)Math.Min(increment, disk.SizeBytes - totalRead);
int actualRead = diskFs.Read(input, 0, read);
if (actualRead == 0)
{
diskFs.Close();
fs.Close();
if (totalRead == diskReadLength)
{
readCompleteOK = true;
}
else
{
readCompleteOK = false;
}
break;
}
totalRead += actualRead;
fs.Write(input, 0, input.Length);
imageState imst = new imageState();
imst.progress = fsToHuman(Convert.ToUInt64(totalRead)) + " / " + fsToHuman(Convert.ToUInt64(diskReadLength));
int perc = (int)(0.5f + ((100f * totalRead) / disk.SizeBytes));
//imst.disksize = disk.SizeBytes;
//imst.diskposition = totalRead;
imst.percent = perc.ToString() + "% complete";
imst.speed = Math.Round(((diskFs.Position / 1048576f) / sw.Elapsed.TotalSeconds), 2).ToString() + "MB/s";
backgroundWorker1.ReportProgress(perc, imst);
}
}
}
public override void Execute()
{
// 512 MB
const long lengthTodo = 512L * 1024 * 1024;
IEnumerable <char> volumeDrives = Utils.GetAllAvailableVolumes();
foreach (char drive in volumeDrives)
{
Console.WriteLine("Hashing " + drive + ":");
try
{
using (RawDisk disk = new RawDisk(drive))
{
long diskReadLength = Math.Min(disk.SizeBytes, lengthTodo);
long totalRead = 0;
// Read in ~16M chunks
int increment = (int)(((16f * 1024f * 1024f) / disk.SectorSize) * disk.SectorSize);
Console.WriteLine("Reading {0:N0} B in {1:N0} B chunks. Chunks: {2:N0}", diskReadLength, increment, diskReadLength / increment);
byte[] input = new byte[increment];
byte[] output = new byte[increment];
MD5 md5 = MD5.Create();
Stopwatch sw = new Stopwatch();
using (RawDiskStream diskFs = disk.CreateDiskStream())
{
sw.Start();
while (true)
{
int read = (int)Math.Min(increment, diskReadLength - diskFs.Position);
int actualRead = diskFs.Read(input, 0, read);
if (actualRead == 0)
{
Console.CursorTop++;
if (totalRead == diskReadLength)
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("Done! Read {0:N0} in total", totalRead);
}
else
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Done! Read {0:N0} in total (not expected)", totalRead);
}
Console.ForegroundColor = ExampleUtilities.DefaultColor;
break;
}
md5.TransformBlock(input, 0, actualRead, output, 0);
totalRead += actualRead;
Console.WriteLine("Position: {0:N0} B, Progress: {1:#0.000%}, AvgSpeed: {2:N2} MB/s", diskFs.Position, diskFs.Position * 1f / diskReadLength, (diskFs.Position / 1048576f) / sw.Elapsed.TotalSeconds);
Console.CursorTop--;
}
sw.Stop();
}
md5.TransformFinalBlock(new byte[0], 0, 0);
Console.Write("Computed MD5: ");
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine(BitConverter.ToString(md5.Hash).Replace("-", ""));
Console.ForegroundColor = ExampleUtilities.DefaultColor;
}
}
catch (Exception ex)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Error: " + ex.Message);
Console.ForegroundColor = ExampleUtilities.DefaultColor;
}
Console.WriteLine();
}
}
