private LinkedList <string> Upload(KidsNoteContent content, string dateFolderId, bool encrypt)
{
string folderName = string.Format("[{0}] {1}", content.Type, content.Id);
string containingFolderId = CreateFolder(dateFolderId, folderName);
MemoryStream ms = null;
if (encrypt)
{
byte[] plain = Encoding.UTF8.GetBytes(content.FormatContent());
byte[] encrypted = new byte[plain.Length];
EncryptorChaCha chacha = new EncryptorChaCha(true, EncryptorChaCha.DefaultChaChaEncKey, EncryptorChaCha.DefaultChaChaEncNonce);
chacha.Process(plain, 0, plain.Length, encrypted, 0);
ms = new MemoryStream(encrypted);
}
else
{
ms = new MemoryStream(Encoding.UTF8.GetBytes(content.FormatContent()));
}
ms.Seek(0, SeekOrigin.Begin);
LinkedList <string> idList = new LinkedList <string>();
UploadProgress(string.Format("Uploding [{0}] {1}", content.Type, content.Id));
string name = encrypt ? "본문.txt.chacha" : "본문.txt";
// 이미 암호화 해 두었다.
string bodyId = UploadFile(ms, containingFolderId, name, name, Constants.GOOGLE_DRIVE_MIMETYPE_TEXT);
idList.AddLast(bodyId);
int i = 0;
foreach (var each in content.Attachments)
{
++i;
int pos = each.DownloadUrl.LastIndexOf('.');
string ext = "";
if (pos > 0)
{
ext = each.DownloadUrl.Substring(pos + 1);
ext = ext.ToLower();
}
bool isVideo = each.Type == AttachmentType.VIDEO;
string id = isVideo ? UploadVideoAttachment(each, i, containingFolderId, ext, encrypt)
: UploadPhotoAttachment(each, i, containingFolderId, ext, encrypt);
if (id != null && id.Length > 0)
{
idList.AddLast(id);
}
}
return(idList);
}
private void buttonTestChaCha_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog();
if (dialog.ShowDialog() == true)
{
FileStream inStream = new FileStream(dialog.FileName, FileMode.Open);
string encFile = dialog.FileName + ".enc";
string decFile = dialog.FileName + ".dec";
FileStream outStreamEnc = new FileStream(encFile, FileMode.Create);
EncryptorChaCha chacha = new EncryptorChaCha(true, EncryptorChaCha.DefaultChaChaEncKey, EncryptorChaCha.DefaultChaChaEncNonce);
byte[] readBuffer = new byte[4096];
byte[] outBuffer = new byte[readBuffer.Length];
int nRead = inStream.Read(readBuffer, 0, readBuffer.Length);
int offset = 0;
while (nRead > 0)
{
if (offset == 0)
{
outStreamEnc.Write(chacha.Nonce, 0, chacha.Nonce.Length);
}
offset += nRead;
chacha.Process(readBuffer, 0, nRead, outBuffer, 0);
outStreamEnc.Write(outBuffer, 0, nRead);
nRead = inStream.Read(readBuffer, 0, readBuffer.Length);
}
inStream.Close();
outStreamEnc.Close();
byte[] nonce = new byte[EncryptorChaCha.DefaultChaChaEncNonce.Length];
chacha = new EncryptorChaCha(false, EncryptorChaCha.DefaultChaChaEncKey, nonce);
inStream = new FileStream(encFile, FileMode.Open);
FileStream outStreamDec = new FileStream(decFile, FileMode.Create);
nRead = inStream.Read(nonce, 0, nonce.Length);
if (nRead > 0)
{
nRead = inStream.Read(readBuffer, 0, readBuffer.Length);
while (nRead > 0)
{
chacha.Process(readBuffer, 0, nRead, outBuffer, 0);
outStreamDec.Write(outBuffer, 0, nRead);
nRead = inStream.Read(readBuffer, 0, readBuffer.Length);
}
}
inStream.Close();
outStreamDec.Close();
}
}
private string UploadPhotoAttachment(KidsNoteContent.Attachment attach, int index, string parentId, string ext, bool encrypt)
{
attach.Data.Seek(0, SeekOrigin.Begin);
MemoryStream encryptedStream = null;
if (encrypt)
{
EncryptorChaCha chacha = new EncryptorChaCha(true, EncryptorChaCha.DefaultChaChaEncKey, EncryptorChaCha.DefaultChaChaEncNonce);
encryptedStream = new MemoryStream();
byte[] readBuffer = new byte[4096];
byte[] encBuffer = new byte[readBuffer.Length];
int nRead = attach.Data.Read(readBuffer, 0, readBuffer.Length);
while (nRead > 0)
{
chacha.Process(readBuffer, 0, nRead, encBuffer, 0);
encryptedStream.Write(encBuffer, 0, nRead);
nRead = attach.Data.Read(readBuffer, 0, readBuffer.Length);
}
encryptedStream.Seek(0, SeekOrigin.Begin);
}
string mType = MimeType.get(ext);
string attachName = string.Format("{0}_{1}", index.ToString("000"), attach.Name);
string message = String.Format("Uploading attachment... {0}", attachName);
UploadProgress(message);
Stream toUpload = encrypt ? encryptedStream : attach.Data;
string suffix = encrypt ? ".chacha" : "";
string id = "";
try
{
id = UploadFile(toUpload, parentId, attachName + suffix, attach.Name + suffix, mType);
}
catch (Exception)
{
id = "";
}
return(id);
}
private void DecryptFolderImpl(string folder)
{
string[] files = Directory.GetFiles(folder);
foreach (var file in files)
{
int pos = file.IndexOf(".chacha");
if (pos < 0)
{
continue;
}
string outFile = file.Substring(0, pos);
EncryptorChaCha chacha = new EncryptorChaCha(false, EncryptorChaCha.DefaultChaChaEncKey, EncryptorChaCha.DefaultChaChaEncNonce);
byte[] readBuffer = new byte[1024 * 16];
byte[] writeBuffer = new byte[readBuffer.Length];
FileStream inStream = new FileStream(file, FileMode.Open);
FileStream outStream = new FileStream(outFile, FileMode.Create);
int nBytes = inStream.Read(readBuffer, 0, readBuffer.Length);
while (nBytes > 0)
{
chacha.Process(readBuffer, 0, nBytes, writeBuffer, 0);
outStream.Write(writeBuffer, 0, nBytes);
nBytes = inStream.Read(readBuffer, 0, readBuffer.Length);
}
inStream.Close();
outStream.Close();
}
string[] directories = Directory.GetDirectories(folder);
foreach (var dir in directories)
{
DecryptFolderImpl(dir);
}
}