internal async Task <string> SendCommandAsync(DeviceSelector deviceSelector, IEnumerable <HwiOption> options, HwiCommands?command, string[] commandArguments, CancellationToken cancel)
{
try
{
return(await SendCommandCoreAsync(deviceSelector, options, command, commandArguments, cancel).ConfigureAwait(false));
}
catch (Exception ex) when(ex is OperationCanceledException || ex is TaskCanceledException || ex is TimeoutException)
{
throw new OperationCanceledException($"'hwi operation is canceled.", ex);
}
// HWI is inconsistent with error codes here.
catch (HwiException ex) when(ex.ErrorCode == HwiErrorCode.DeviceConnError || ex.ErrorCode == HwiErrorCode.DeviceNotReady)
{
// Probably didn't find device with specified fingerprint.
// Enumerate and call again, but not forever.
if (!(deviceSelector is FingerprintDeviceSelector))
{
throw;
}
IEnumerable <HwiEnumerateEntry> hwiEntries = await EnumerateEntriesAsync(cancel);
// Trezor T won't give Fingerprint info so we'll assume that the first device that doesn't give fingerprint is what we need.
HwiEnumerateEntry firstNoFingerprintEntry = hwiEntries.Where(x => x.Fingerprint is null).FirstOrDefault();
if (firstNoFingerprintEntry is null)
{
throw;
}
deviceSelector = DeviceSelectors.FromDeviceType(firstNoFingerprintEntry.Model, firstNoFingerprintEntry.Path);
return(await SendCommandCoreAsync(deviceSelector, options, command, commandArguments, cancel).ConfigureAwait(false));
}
}
public HwiEnumerateEntry(
HardwareWalletModels model,
string path,
string serialNumber,
HDFingerprint?fingerprint,
bool?needsPinSent,
bool?needsPassphraseSent,
string error,
HwiErrorCode?code)
{
Model = model;
Path = path;
SerialNumber = serialNumber;
Fingerprint = fingerprint;
NeedsPinSent = needsPinSent;
NeedsPassphraseSent = needsPassphraseSent;
Error = error;
Code = code;
DeviceSelector = fingerprint is HDFingerprint fp?DeviceSelectors.FromFingerprint(fp) :
DeviceSelectors.FromDeviceType(Model, path);
}
