protected virtual bool CheckRegistry(RemoteAppcast appcast)
{
if (IsThisFirstRun)
{
EnsureNotFirstRun();
_logger.Log("App is running for the first time. Skipping further checks.");
return false;
}
_logger.Log("This is not app's first run. Continuing with other registry checks.");
var skipVersion = SkipVersion;
if (!string.IsNullOrWhiteSpace(skipVersion))
{
Version ver;
if (Version.TryParse(skipVersion, out ver) && appcast.Version == ver)
{
_logger.Log(string.Format("User has asked to skip version: {0}. Skipping further checks.", ver));
return false;
}
}
_logger.Log("Seems like user doesn\'t want to skip this version. Continuing with other registry checks.");
var lastCheckDate = LastCheckDate;
if (DateTime.Now.Subtract(lastCheckDate).TotalDays < 1)
{
_logger.Log("Last check was done less than a day ago. Skipping further checks");
return false;
}
_logger.Log(string.Format("Last check was done on: {0}", lastCheckDate.ToShortDateString()));
return true;
}
internal async Task StartAsync(RemoteAppcast appcast)
{
InitializeCommands(appcast);
Title = string.Format("A NEW VERSION OF {0} IS AVAILABLE", appcast.Title).ToUpperInvariant();
OldVersion = new AssemblyAccessor().Version;
NewVersion = appcast.Version.ToString();
ReleaseNotes = await FetchReleaseNotesAsync(appcast.ReleaseNotesUrl).ConfigureAwait(false);
}
internal async Task StartAsync(RemoteAppcast appcast)
{
InitializeCommands(appcast);
Title = string.Format(Resources.NewVersionAvailable, appcast.Title).ToUpperInvariant();
OldVersion = GetOldVersion();
NewVersion = appcast.Version.ToString();
ReleaseNotes = await FetchReleaseNotesAsync(appcast.ReleaseNotesUrl).ConfigureAwait(false);
}
private async Task DownloadArtifact(RemoteAppcast appcast, string destinationPath)
{
_logger.Log("Starting to download artifact");
using (var client = new WebClient())
{
client.DownloadProgressChanged += (sender, args) => { ProgressPercent = args.ProgressPercentage; };
await _contentDownloader.DownloadFile(appcast.ArtifactUrl, destinationPath, client).ConfigureAwait(false);
_logger.Log(string.Format("Artifact downloaded to {0}", destinationPath));
}
}
protected virtual async void ShowUpdateWindow(RemoteAppcast appcast)
{
var viewModel = new MainWindowViewModel(_appInfo, _logger, RemoteContentDownloader);
await viewModel.StartAsync(appcast).ConfigureAwait(true);
var window = new MainWindow { DataContext = viewModel };
viewModel.ContinueUpdateCommand = new DelegateCommand(e =>
{
_logger.Log("Continuing with downloading the artifact");
window.Close();
ShowDownloadWindow(appcast);
});
SetOwner(window);
window.ShowDialog();
}
protected virtual void ShowDownloadWindow(RemoteAppcast appcast)
{
var viewModel = new DownloadWindowViewModel(_appInfo, _logger, RemoteContentDownloader);
var destinationPath = CreateTempPath(appcast.ArtifactUrl);
var window = new DownloadWindow { DataContext = viewModel };
viewModel.ContinueCommand = new DelegateCommand(e =>
{
_logger.Log("Continue after downloading artifact");
OnArtifactDownloadedEvent(new SingleEventArgs<string>(destinationPath));
window.Close();
OpenArtifact(destinationPath);
});
SetOwner(window);
viewModel.StartAsync(appcast, destinationPath);
window.ShowDialog();
}
internal bool ShouldUpdate(RemoteAppcast appcast, bool shouldIgnoreRegistryChecks = false)
{
if (!shouldIgnoreRegistryChecks)
{
_logger.Log("Checking registry entries for updates.");
if (!CheckRegistry(appcast))
{
_logger.Log("Registry entries says not to tell if there is an update available.");
return false;
}
_logger.Log("Registry entries says go and tell if there is an update available.");
}
else
{
_logger.Log("Skipping registry checks. This probably means we are doing forced update checks.");
}
UpdateCheckDate();
var higherVersion = CheckVersion(appcast);
return higherVersion;
}
protected virtual bool CheckVersion(RemoteAppcast appcast)
{
var curVer = Assembly.GetEntryAssembly().GetName().Version;
var isHigherVersionAvailable = appcast.Version.IsHigherThan(curVer);
_logger.Log(string.Format("Higher version of app is {0}available", isHigherVersionAvailable ? "" : "not "));
return isHigherVersionAvailable;
}
protected virtual bool VerifyArtifact(RemoteAppcast appcast, string artifactPath)
{
var verifer = new SignatureVerifier(_appInfo.PublicSignatureFilename);
return verifer.VerifyDSASignature(appcast.DSASignature, artifactPath);
}
private bool ShouldOpenArtifact(RemoteAppcast appcast, string artifactPath)
{
if (string.IsNullOrEmpty(appcast.DSASignature))
{
_logger.Log("No DSASignature provided. Skipping signature verification");
return true;
}
_logger.Log("DSASignature provided. Verifying artifact's signature");
if (VerifyArtifact(appcast, artifactPath))
{
_logger.Log("Successfully verified artifact's signature");
return true;
}
_logger.Log("Couldn't verify artifact's signature. The artifact will now be deleted.");
var signatureWindowViewModel = new SignatureVerificationWindowViewModel(_appInfo, appcast);
var signatureWindow = new SignatureVerificationWindow {DataContext = signatureWindowViewModel};
signatureWindowViewModel.ContinueCommand = new DelegateCommand(e=> {signatureWindow.Close();});
SetOwner(signatureWindow);
signatureWindow.ShowDialog();
return false;
}
protected virtual void ShowDownloadWindow(RemoteAppcast appcast)
{
var viewModel = new DownloadWindowViewModel(_appInfo, _logger, RemoteContentDownloader);
var artifactPath = CreateTempPath(appcast.ArtifactUrl);
var window = new DownloadWindow { DataContext = viewModel };
viewModel.ContinueWithInstallationCommand = new DelegateCommand(e =>
{
_logger.Log("Continue after downloading artifact");
_analyticsLogger.LogContinueWithInstallation();
OnArtifactDownloadedEvent(new SingleEventArgs<string>(artifactPath));
window.Close();
if (ShouldOpenArtifact(appcast, artifactPath))
{
OpenArtifact(artifactPath);
_logger.Log("Opened artifact");
}
});
SetOwner(window);
viewModel.StartAsync(appcast, artifactPath);
window.ShowDialog();
}
protected override void ShowUpdateWindow(RemoteAppcast appcast)
{
// can't do in tests
}
protected override void OnRemoteAppcastAvailableEvent(SingleEventArgs<RemoteAppcast> args)
{
RemoteAppcast = args.Payload;
base.OnRemoteAppcastAvailableEvent(args);
}
private void InitializeCommands(RemoteAppcast appcast)
{
_remoteVersion = appcast.Version.ToString();
SkipThisVersionCommand = new DelegateCommand(SkipThisVersionCommandHandler);
RemindMeLaterCommand = new DelegateCommand(RemindMeLaterCommandHandler);
}
internal async void StartAsync(RemoteAppcast appcast, string destinationPath)
{
Title = string.Format("Downloading {0} Installer...", appcast.Title);
await DownloadArtifact(appcast, destinationPath).ConfigureAwait(true);
}
public SignatureVerificationWindowViewModel(AppInfo appInfo, RemoteAppcast appcast)
{
AppIconPath = appInfo.AppIconPath;
Title = string.Format(Properties.Resources.SignatureErrorTitle, appcast.Title);
}
internal async void StartAsync(RemoteAppcast appcast, string destinationPath)
{
Title = string.Format(Properties.Resources.DownloadingInstaller, appcast.Title);
await DownloadArtifact(appcast, destinationPath).ConfigureAwait(true);
}