private void DecryptFile(Stream inputFileStream, Stream outputFileStream, string passphrase)
{
_engine.DecryptFile(inputFileStream, outputFileStream, passphrase);
}
/// <summary>
/// Shows the details of an item clicked on in the <see cref="ItemPage"/>
/// </summary>
private async void ItemView_ItemClick(object sender, ItemClickEventArgs e)
{
// Navigate to the appropriate destination page, configuring the new page
// by passing required information as a navigation parameter
//var itemId = ((SampleDataItem)e.ClickedItem).UniqueId;
//if (!Frame.Navigate(typeof(ItemPage), itemId))
//{
// throw new Exception(this.resourceLoader.GetString("NavigationFailedExceptionMessage"));
//}
Exception exception = null;
try
{
var passphraseDialog = new PassphraseInputDialog();
ContentDialogResult passphraseDialogResult = await passphraseDialog.ShowAsync();
if (passphraseDialogResult == ContentDialogResult.Primary)
{
var passphrase = passphraseDialog.Passphrase;
var fileData = (YCFileData)e.ClickedItem;
StorageFolder tempFolder = Windows.Storage.ApplicationData.Current.LocalCacheFolder;
StorageFile encryptedFile = await tempFolder.CreateFileAsync(fileData.InternalName, CreationCollisionOption.ReplaceExisting);
StorageFile decryptedFile = await tempFolder.CreateFileAsync(fileData.FileName, CreationCollisionOption.ReplaceExisting);
using (var encryptedFileStream = await encryptedFile.OpenStreamForWriteAsync())
{
await client.GetFile(fileData.InternalName, encryptedFileStream);
// reset encrypted file tape head
encryptedFileStream.Seek(0, SeekOrigin.Begin);
using (var decryptedFileStream = await decryptedFile.OpenStreamForWriteAsync())
{
engine.DecryptFile(encryptedFileStream, decryptedFileStream, passphrase);
}
}
//No further use for the local encrypted file
await encryptedFile.DeleteAsync(StorageDeleteOption.PermanentDelete);
// Lift Off!
//var launcherOpts = new LauncherOptions()
//{
// DisplayApplicationPicker = false
//};
await Launcher.LaunchFileAsync(decryptedFile);
//Burn after reading!
//await decryptedFile.DeleteAsync();
}
}
catch (Exception ex)
{
exception = ex;
}
if (exception != null)
{
var dialog = new MessageDialog("An exception was thrown:" + Environment.NewLine + exception.Message, "Oh noes!");
await dialog.ShowAsync();
}
}
