public async Task<string> GetSubjectFromDeviceGuardSigning(string dgssTokenPath, CancellationToken cancellationToken = default)
{
Logger.Info("Getting certificate subject for Device Guard signing...");
var tempFilePath = Path.Combine(Path.GetTempPath(), "msix-hero-" + Guid.NewGuid().ToString("N") + ".cat");
try
{
var name = typeof(DeviceGuardHelper).Assembly.GetManifestResourceNames().First(n => n.EndsWith("MSIXHeroTest.cat"));
using (var manifestResourceStream = typeof(DeviceGuardHelper).Assembly.GetManifestResourceStream(name))
{
if (manifestResourceStream == null)
{
throw new InvalidOperationException("Cannot extract temporary file.");
}
Logger.Debug($"Creating temporary file path {tempFilePath}");
using (var fileStream = File.Create(tempFilePath))
{
manifestResourceStream.Seek(0L, SeekOrigin.Begin);
await manifestResourceStream.CopyToAsync(fileStream, cancellationToken).ConfigureAwait(false);
}
}
var sdk = new MsixSdkWrapper();
Logger.Debug($"Signing temporary file path {tempFilePath}");
await sdk.SignPackageWithDeviceGuard(new[] {tempFilePath}, "SHA256", dgssTokenPath, null, cancellationToken).ConfigureAwait(false);
using (var fromSignedFile = X509Certificate.CreateFromSignedFile(tempFilePath))
{
Logger.Info($"Certificate subject is {tempFilePath}");
return fromSignedFile.Subject;
}
}
catch (Exception e)
{
Logger.Error("Could not read subject from Device Guard certificate.", e);
throw;
}
finally
{
if (File.Exists(tempFilePath))
{
Logger.Debug($"Removing {tempFilePath}");
ExceptionGuard.Guard(() => File.Delete(tempFilePath));
}
}
}
public async Task SignPackageWithDeviceGuard(string package,
bool updatePublisher,
DeviceGuardConfig config,
string timestampUrl = null,
IncreaseVersionMethod increaseVersion = IncreaseVersionMethod.None,
CancellationToken cancellationToken = default,
IProgress <ProgressData> progress = null)
{
Logger.Info("Signing package {0} using Device Guard for {1}.", package, config.Subject);
var dgssTokenPath = await new DgssTokenCreator().CreateDeviceGuardJsonTokenFile(config, cancellationToken);
try
{
var publisherName = config.Subject;
if (publisherName == null)
{
var dgh = new DeviceGuardHelper();
publisherName = await dgh.GetSubjectFromDeviceGuardSigning(dgssTokenPath, cancellationToken).ConfigureAwait(false);
}
var localCopy = await this.PreparePackageForSigning(package, updatePublisher, increaseVersion, publisherName, cancellationToken).ConfigureAwait(false);
try
{
cancellationToken.ThrowIfCancellationRequested();
var sdk = new MsixSdkWrapper();
progress?.Report(new ProgressData(25, "Signing with Device Guard..."));
await sdk.SignPackageWithDeviceGuard(new[] { localCopy }, "SHA256", dgssTokenPath, timestampUrl, cancellationToken).ConfigureAwait(false);
progress?.Report(new ProgressData(75, "Signing with Device Guard..."));
await Task.Delay(500, cancellationToken).ConfigureAwait(false);
Logger.Debug("Moving {0} to {1}.", localCopy, package);
File.Copy(localCopy, package, true);
progress?.Report(new ProgressData(95, "Signing with Device Guard..."));
}
finally
{
try
{
if (File.Exists(localCopy))
{
File.Delete(localCopy);
}
}
catch (Exception e)
{
Logger.Warn(e, "Clean-up of a temporary file {0} failed.", localCopy);
}
}
}
finally
{
if (File.Exists(dgssTokenPath))
{
ExceptionGuard.Guard(() => File.Delete(dgssTokenPath));
}
}
}