async void OnBindButtonClicked(object sender, EventArgs args)
{
try
{
string qrCode = await CommonTasks.GetQRCodeAsync();
if (qrCode == null)
{
return;
}
else
{
string publicKey;
Settings.BindControlPanel(qrCode);
Settings.GetPublicKey(out publicKey);
string fingerprint = Settings.PublicKeyToFingerprint(publicKey);
await DisplayAlert("Device bound", "Device with fingerprint " + fingerprint + " is successfully bound.", "OK");
Navigation.InsertPageBefore(new RemoteScreenPage(), this);
await Navigation.PopAsync(true);
}
}
catch (Exception e)
{
await DisplayAlert("Error", "Binding failed", "OK");
}
}
async void OnBindButtonClicked(object sender, EventArgs args)
{
try
{
#if __ANDROID__
var status = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Camera);
if (status != PermissionStatus.Granted)
{
var results = await CrossPermissions.Current.RequestPermissionsAsync(Permission.Camera);
if (results.ContainsKey(Permission.Camera))
{
status = results[Permission.Camera];
}
}
if (status != PermissionStatus.Granted)
{
await DisplayAlert("Camera permission denied", "Please enable camera permission for this app.", "OK");
return;
}
#endif
string qrCode = await CommonTasks.GetQRCodeAsync();
if (qrCode == null)
{
return;
}
else
{
string publicKey;
Settings.BindControlPanel(qrCode);
Settings.GetPublicKey(out publicKey);
string fingerprint = Settings.PublicKeyToFingerprint(publicKey);
await DisplayAlert("Device bound", "Device with fingerprint " + fingerprint + " is successfully bound.", "OK");
Navigation.InsertPageBefore(new RemoteScreenPage(), this);
await Navigation.PopAsync(true);
}
}
catch (Exception e)
{
await DisplayAlert("Error", "Binding failed", "OK");
}
}
private async Task FindServer(CancellationToken token)
{
CommonTasks.ServerInfo serverInfo;
int failedAttempts = 0;
try
{
while (true)
{
try
{
serverInfo = await CommonTasks.FindServerAsync(TimeSpan.FromSeconds(1), token);
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception e)
{
failedAttempts++;
if (failedAttempts == 5)
{
ServerStatus = "Searching for Secalot Control Panel";
ServerColor = "lightYellow";
TransactionButtonEnabled = false;
failedAttempts = 0;
await Task.Delay(5000, token);
}
continue;
}
ServerStatus = "Secalot Control Panel found";
ServerColor = "lightGreen";
TransactionButtonEnabled = true;
this.serverInfo = serverInfo;
failedAttempts = 0;
await Task.Delay(5000, token);
}
}
catch (TaskCanceledException)
{
return;
}
}
async void OnGetTransactionButtonClicked(object sender, EventArgs args)
{
uint timeout = 0;
MainLayoutEnabled = false;
try
{
CancellationTokenSource timeoutCTS = new CancellationTokenSource(TimeSpan.FromSeconds(5));
using (CancellationTokenSource linkedCts = CancellationTokenSource.CreateLinkedTokenSource(timeoutCTS.Token, getTransactionTokenSource.Token))
{
CommonTasks.ConnectionState connectionState = new CommonTasks.ConnectionState();
using (connectionState.client = new TcpClient())
{
await CommonTasks.ConnectToServerAsync(serverInfo, connectionState, TimeSpan.FromSeconds(1));
await CommonTasks.EstablishSRPChannelAsync(connectionState, linkedCts.Token);
var tls = await CommonTasks.PerformSSLHadshakeWithToken(connectionState, linkedCts.Token);
try
{
await CommonTasks.SelectBtcApp(connectionState, linkedCts.Token, tls);
var transactionDetails = await CommonTasks.GetBtcTransactionDetails(connectionState, linkedCts.Token, tls);
var inputAmounts = await CommonTasks.GetBtcInputAmounts(transactionDetails.numberOfInputs, connectionState, linkedCts.Token, tls);
var transaction = await CommonTasks.ReadBtcTransaction(transactionDetails.currentOffset, connectionState, linkedCts.Token, tls);
var parsedTransaction = BtcParser.ParseBitcoinTransaction(transactionDetails, transaction, inputAmounts, ref timeout);
await PopupNavigation.PushAsync(new TransactionPopup(parsedTransaction, timeout));
}
catch (TransactionNotActiveException)
{
try
{
await CommonTasks.SelectEthApp(connectionState, linkedCts.Token, tls);
var transactionDetails = await CommonTasks.GetEthTransactionDetails(connectionState, linkedCts.Token, tls);
var transaction = await CommonTasks.ReadEthTransaction(transactionDetails.currentOffset, connectionState, linkedCts.Token, tls);
string parsedTransaction = EthParser.ParseEthereumTransaction(transactionDetails, transaction, ref timeout);
await PopupNavigation.PushAsync(new TransactionPopup(parsedTransaction, timeout));
}
catch (TransactionNotActiveException)
{
try
{
await CommonTasks.SelectXrpApp(connectionState, linkedCts.Token, tls);
var transactionDetails = await CommonTasks.GetXrpTransactionDetails(connectionState, linkedCts.Token, tls);
var transaction = await CommonTasks.ReadXrpTransaction(transactionDetails.currentOffset, connectionState, linkedCts.Token, tls);
List <string> parsedTransaction = XrpParser.ParseRippleTransaction(transactionDetails, transaction, ref timeout);
await PopupNavigation.PushAsync(new TransactionPopup(parsedTransaction[0], timeout, parsedTransaction[1]));
}
catch (TransactionNotActiveException)
{
throw new RemoteProtocolException("There are no transactions active");
}
catch (AppNotPresentException)
{
throw new RemoteProtocolException("There are no transactions active");
}
}
}
}
}
}
catch (RemoteProtocolException e)
{
await DisplayAlert("Error", e.Message, "OK");
}
catch (ServerConnectionFailedException e)
{
await DisplayAlert("Error", "Failed to connect.", "OK");
}
catch (EthParserException e)
{
await DisplayAlert("Error", e.Message, "OK");
}
catch (BtcParserException e)
{
await DisplayAlert("Error", e.Message, "OK");
}
catch (XrpParserException e)
{
await DisplayAlert("Error", e.Message, "OK");
}
catch (Exception e)
{
string message = "An error has occurred";
while (e.InnerException != null)
{
if (e.InnerException.GetType() == typeof(InvalidServerCertificateException))
{
message = "This app is bound with a different Secalot device.";
break;
}
e = e.InnerException;
}
await DisplayAlert("Error", message, "OK");
}
finally
{
MainLayoutEnabled = true;
}
}