public async Task UnlockFromQuarantine(FileScan scan)
{
await this.quarantine.UnlockFromQuarantine(scan);
this.database.Update(scan);
this.database.Persist();
}
private void HandleScans()
{
while (!this.token.Token.IsCancellationRequested)
{
try
{
string path = this.queue.Take(this.token.Token);
string hash = this.hasher.HashSha256(path);
Report report = this.database.GetOrInsertReport(hash);
FileScan scan = new FileScan(path, report);
scan = this.ReconcileScan(scan);
if (scan.Report.State != ReportState.Scanned)
{
this.ScanAndReport(scan);
}
}
catch (Exception e)
{
Debug.WriteLine(e);
}
}
}
public async Task LockInQuarantine(FileScan scan)
{
await this.quarantine.LockToQuarantine(scan);
this.database.Update(scan);
this.database.Persist();
}
public void Remove(FileScan scan)
{
this.database.Remove(scan);
lock (this.mutex)
{
this.Scans.Remove(scan);
}
}
private void CreateScan(FileScan scan)
{
lock (this.mutex)
{
this.Scans.Add(scan);
}
this.OnScanCreated?.Invoke(scan);
}
private void ReplaceScan(int id, FileScan scan)
{
lock (this.mutex)
{
int index = this.Scans.FindIndex(s => s.Id == id);
if (index != -1)
{
this.Scans[index] = scan;
}
}
this.OnScanUpdated?.Invoke(scan);
}
private void ScanAndReport(FileScan scan)
{
var uploadSource = Observable.If(
() => scan.Report.State == ReportState.WaitingForScan,
this.client.UploadFile(scan.Path)
.SubscribeOn(Scheduler.Default)
.Catch((Exception ex) => {
return(Observable.Throw <FileScanResult>(ex).DelaySubscription(TimeSpan.FromSeconds(30)));
})
.Retry(),
Observable.Return(new FileScanResult())
);
var reportSource = uploadSource.SelectMany(result =>
{
return(this.client.GetFileReport(scan.Report.Hash)
.SelectMany(report =>
{
if (report?.ResponseCode == "-2" && scan.Report.State == ReportState.WaitingForScan)
{
scan.Report.State = ReportState.QueuedForAnalysis;
this.database.Update(scan.Report);
this.OnScanUpdated?.Invoke(scan);
}
if (report == null || report.Scans == null)
{
return Observable.Throw <FileReportResult>(new Exception("Not ready yet"));
}
return Observable.Return(report);
})
.Catch((Exception ex) =>
{
return Observable.Throw <FileReportResult>(ex).DelaySubscription(TimeSpan.FromSeconds(30));
})
.Retry());
});
this.manager += reportSource
.Subscribe(result => {
scan.Report.Result = result;
scan.Report.State = ReportState.Scanned;
this.database.Update(scan.Report);
this.OnScanUpdated?.Invoke(scan);
});
}
private FileScan ReconcileScan(FileScan scan)
{
var existingScan = this.database.GetScan(scan.Path);
scan.Size = new FileInfo(scan.Path).Length;
if (existingScan != null)
{
existingScan.Size = scan.Size;
existingScan.Report = scan.Report;
this.database.Update(existingScan);
this.OnScanReplaced?.Invoke(existingScan.Id, existingScan);
return(existingScan);
}
else
{
this.database.Insert(scan);
this.OnScanCreated?.Invoke(scan);
return(scan);
}
}
private void UpdateScan(FileScan scan)
{
this.OnScanUpdated?.Invoke(scan);
}