private void EncryptedDownload(Uri downloadUri, PlainFileKey plainFileKey)
{
FileDecryptionCipher cipher;
try {
cipher = Crypto.Sdk.Crypto.CreateFileDecryptionCipher(plainFileKey);
} catch (CryptoException ce) {
string message = "Creation of decryption engine for encrypted download " + ActionId + " failed!";
DracoonClient.Log.Debug(Logtag, message);
throw new DracoonCryptoException(CryptoErrorMapper.ParseCause(ce), ce);
}
try {
ProgressReportTimer = Stopwatch.StartNew();
long downloadedByteCount = 0;
while (downloadedByteCount < AssociatedNode.Size.GetValueOrDefault(0))
{
byte[] chunk = DownloadChunk(downloadUri, downloadedByteCount, AssociatedNode.Size.GetValueOrDefault(0));
EncryptedDataContainer encryptedContainer = new EncryptedDataContainer(chunk, null);
PlainDataContainer plainContainer = cipher.ProcessBytes(encryptedContainer);
OutputStream.Write(plainContainer.Content, 0, plainContainer.Content.Length);
downloadedByteCount += chunk.Length;
}
byte[] encryptionTag = Convert.FromBase64String(plainFileKey.Tag);
EncryptedDataContainer tagContainer = new EncryptedDataContainer(null, encryptionTag);
PlainDataContainer finalContainer = cipher.DoFinal(tagContainer);
OutputStream.Write(finalContainer.Content, 0, finalContainer.Content.Length);
if (LastNotifiedProgressValue != downloadedByteCount)
{
// Notify 100 percent progress
NotifyProgress(ActionId, downloadedByteCount, AssociatedNode.Size.GetValueOrDefault(0));
}
} catch (CryptoException ce) {
const string message = "Decryption of file failed while downloading!";
DracoonClient.Log.Debug(Logtag, message);
throw new DracoonFileIOException(message, ce);
} catch (IOException ioe) {
if (IsInterrupted)
{
throw new ThreadInterruptedException();
}
const string message = "Write to stream failed!";
DracoonClient.Log.Debug(Logtag, message);
throw new DracoonFileIOException(message, ioe);
} finally {
ProgressReportTimer.Stop();
}
}
private void EncryptedUpload(ref PlainFileKey plainFileKey)
{
DracoonClient.Log.Debug(LogTag, "Uploading file [" + FileUploadRequest.Name + "] in encrypted proxied way.");
FileEncryptionCipher cipher;
try {
cipher = Crypto.Sdk.Crypto.CreateFileEncryptionCipher(plainFileKey);
} catch (CryptoException ce) {
string message = "Creation of encryption engine for encrypted upload " + ActionId + " failed!";
DracoonClient.Log.Debug(LogTag, message);
throw new DracoonCryptoException(CryptoErrorMapper.ParseCause(ce));
}
try {
long uploadedByteCount = 0;
byte[] buffer = new byte[DracoonClient.HttpConfig.ChunkSize];
int bytesRead = 0;
while ((bytesRead = InputStream.Read(buffer, 0, buffer.Length)) > 0)
{
EncryptedDataContainer encryptedContainer = EncryptChunk(cipher, bytesRead, buffer, false);
ProcessEncryptedChunk(new Uri(UploadToken.UploadUrl), encryptedContainer, uploadedByteCount, cipher, false);
uploadedByteCount += encryptedContainer.Content.Length;
}
EncryptedDataContainer finalEncryptedContainer = EncryptChunk(cipher, bytesRead, buffer, true);
plainFileKey.Tag = ProcessEncryptedChunk(new Uri(UploadToken.UploadUrl), finalEncryptedContainer, uploadedByteCount, cipher, true);
uploadedByteCount += finalEncryptedContainer.Content.Length;
if (LastNotifiedProgressValue != uploadedByteCount)
{
// Notify 100 percent progress
NotifyProgress(ActionId, uploadedByteCount, OptionalFileSize);
}
} catch (IOException ioe) {
if (IsInterrupted)
{
throw new ThreadInterruptedException();
}
string message = "Read from stream failed!";
DracoonClient.Log.Debug(LogTag, message);
throw new DracoonFileIOException(message, ioe);
} finally {
ProgressReportTimer?.Stop();
}
}
private void OnDbInitializationComplete()
{
if (InvokeRequired)
{
BeginInvoke(new MethodInvoker(OnDbInitializationComplete));
}
else
{
ProgressReportTimer.Stop();
UpdateCurrentProgress(1, 1);
ProgressStatusLabel.Visible = false;
label2.Visible = false;
if (CTS.IsCancellationRequested)
{
InitializationStepLabel.Text = "Intialization cancelled";
}
else
{
InitializationStepLabel.Text = "Intialization complete";
}
}
}
private void StartInitialization()
{
CTS = new CancellationTokenSource();
InitUpdateTask = Task.Factory.StartNew(InitOrUptateDatabase);
ProgressReportTimer.Start();
}
private List <ApiS3FileUploadPart> EncryptedS3Upload(ref PlainFileKey plainFileKey)
{
DracoonClient.Log.Debug(LogTag, "Uploading file [" + FileUploadRequest.Name + "] via encrypted s3 direct upload.");
FileEncryptionCipher cipher;
try {
cipher = Crypto.Sdk.Crypto.CreateFileEncryptionCipher(plainFileKey);
} catch (CryptoException ce) {
DracoonClient.Log.Debug(LogTag, "Creation of encryption engine for encrypted upload " + ActionId + " failed!");
throw new DracoonCryptoException(CryptoErrorMapper.ParseCause(ce));
}
try {
int chunkSize = DefineS3ChunkSize();
int s3UrlBatchSize = DefineS3BatchSize(chunkSize);
long uploadedByteCount = 0;
byte[] buffer = new byte[chunkSize];
int bytesRead, offset = 0;
while ((bytesRead = InputStream.Read(buffer, offset, buffer.Length - offset)) >= 0)
{
int nextByte = InputStream.ReadByte(); // Check if further bytes are available
byte[] chunk;
EncryptedDataContainer container = EncryptChunk(cipher, bytesRead + offset, buffer, false);
if (nextByte == -1)
{
// It is the last block
EncryptedDataContainer finalContainer = EncryptChunk(cipher, bytesRead + offset, buffer, true);
plainFileKey.Tag = Convert.ToBase64String(finalContainer.Tag);
chunk = new byte[container.Content.Length + finalContainer.Content.Length];
Buffer.BlockCopy(finalContainer.Content, 0, chunk, container.Content.Length, finalContainer.Content.Length);
}
else
{
chunk = new byte[container.Content.Length];
}
Buffer.BlockCopy(container.Content, 0, chunk, 0, container.Content.Length);
if (chunk.Length < chunkSize)
{
S3Urls = RequestS3Urls(S3Parts.Count + 1, 1, chunk.Length);
}
else if (S3Urls.Count == 0)
{
S3Urls = RequestS3Urls(S3Parts.Count + 1, s3UrlBatchSize, chunkSize);
}
string partETag = UploadS3ChunkWebClient(S3Urls.Dequeue(), chunk, uploadedByteCount);
S3Parts.Add(new ApiS3FileUploadPart()
{
PartEtag = partETag,
PartNumber = S3Parts.Count + 1
});
uploadedByteCount += chunk.Length;
if (nextByte != -1)
{
// Do it every time if the current block isn't the last
Buffer.SetByte(buffer, 0, (byte)nextByte);
offset = 1;
}
else
{
break;
}
}
if (LastNotifiedProgressValue != uploadedByteCount)
{
// Notify 100 percent progress
NotifyProgress(ActionId, uploadedByteCount, OptionalFileSize);
}
return(S3Parts);
} catch (IOException ioe) {
if (IsInterrupted)
{
throw new ThreadInterruptedException();
}
string message = "Read from stream failed!";
DracoonClient.Log.Debug(LogTag, message);
throw new DracoonFileIOException(message, ioe);
} finally {
ProgressReportTimer?.Stop();
}
}
