private static FileEnumeratorReport Worker(FileEnumeratorParameters parameters)
{
TimingMetrics timingMetrics = new TimingMetrics();
FailSuccessCount fileEnumCount = new FailSuccessCount("OS files enumerated");
FailSuccessCount databaseInsertCount = new FailSuccessCount("OS database rows updated");
try
{
parameters.CancelToken.ThrowIfCancellationRequested();
StringBuilder currentPath = new StringBuilder(parameters.SelectedFolder);
string lastParent = currentPath.ToString();
string temp = currentPath.ToString();
if (temp.Contains(':') && (temp.Length == 2 || temp.Length == 3)) // Is a root directory, i.e. "C:" or "C:\"
{
lastParent = ".";
}
string drive = parameters.SelectedFolder[0].ToString().ToUpper();
timingMetrics.Start(TimingMetric.ParsingMFT);
List <DriveInfo> ntfsDrives = DriveInfo.GetDrives().Where(d => d.IsReady && d.DriveFormat == "NTFS").ToList();
DriveInfo driveToAnalyze = ntfsDrives.Where(dr => dr.Name.ToUpper().Contains(drive)).Single();
NtfsReader ntfsReader = new NtfsReader(driveToAnalyze, RetrieveMode.All);
IEnumerable <INode> mftNodes =
ntfsReader.GetNodes(driveToAnalyze.Name)
.Where(node => (node.Attributes &
(NtfsNodeAttributes.Device
| NtfsNodeAttributes.Directory
| NtfsNodeAttributes.ReparsePoint
| NtfsNodeAttributes.SparseFile
)) == 0) // This means that we DONT want any matches of the above NtfsNodeAttributes type
.Where(node => FileMatchesPattern(node.FullName, parameters.SearchPatterns));
//.OrderByDescending(n => n.Size);
if (parameters.SelectedFolder.ToCharArray().Length > 3)
{
string selectedFolderUppercase = parameters.SelectedFolder.ToUpperInvariant().TrimEnd(new char[] { '\\' });
mftNodes = mftNodes.Where(node => node.FullName.ToUpperInvariant().Contains(selectedFolderUppercase));
}
timingMetrics.Stop(TimingMetric.ParsingMFT);
IDataPersistenceLayer dataPersistenceLayer = parameters.DataPersistenceLayer;
foreach (INode node in mftNodes)
{
string message = $"MFT#: {node.MFTRecordNumber.ToString().PadRight(7)} Seq.#: {node.SequenceNumber.ToString().PadRight(4)} Path: {node.FullName}";
parameters.ReportAndLogOutputFunction.Invoke(message);
fileEnumCount.IncrementSucceededCount();
FileProperties prop = new FileProperties();
prop.PopulateFileProperties(parameters, parameters.SelectedFolder[0], node, timingMetrics);
// INSERT file properties into _DATABASE_
timingMetrics.Start(TimingMetric.PersistingFileProperties);
bool insertResult = dataPersistenceLayer.PersistFileProperties(prop);
if (insertResult)
{
databaseInsertCount.IncrementSucceededCount();
}
else
{
databaseInsertCount.IncrementFailedCount();
}
timingMetrics.Stop(TimingMetric.PersistingFileProperties);
parameters.CancelToken.ThrowIfCancellationRequested();
}
dataPersistenceLayer.Dispose();
FileProperties.CleanUp();
}
catch (OperationCanceledException)
{ }
return(new FileEnumeratorReport(new List <FailSuccessCount> {
fileEnumCount, databaseInsertCount
}, timingMetrics));
}