async Task CheckForUpdatesAsync()
{
try
{
#region check version
var latestVersion = await VersionProvider.GetLatestVersionAsync();
if (latestVersion == PendingUpdate)
{
return; // already loaded and ready to install
}
var currentVersion = ProductProvider.GetInstalledVersion();
if (currentVersion >= latestVersion)
{
return; // already up to date or newer
}
#endregion
Log.Warning($"Newer version {latestVersion} found, current version {currentVersion}");
#region load binaries
if (!File.Exists(InstallerPath) ||
!ProductProvider.VerifyPackage(InstallerPath) ||
!ProductProvider.VerifyPackageVersion(InstallerPath, latestVersion))
{
Log.Debug("Load binaries");
if (!Directory.Exists(WorkingDirectory))
{
Directory.CreateDirectory(WorkingDirectory);
}
using (var binariesStream = await BinariesProvider.GetLatestBinariesAsync())
using (var fileStream = File.Open(InstallerPath, FileMode.Create))
{
await binariesStream.CopyToAsync(fileStream);
}
}
#endregion
Log.Debug($"Binaries loaded");
#region verify binaries
if (!ProductProvider.VerifyPackage(InstallerPath))
{
Log.Warning($"Loaded binaries are untrusted");
return;
}
if (!ProductProvider.VerifyPackageVersion(InstallerPath, latestVersion))
{
Log.Warning($"Loaded binaries are not the latest version");
return;
}
#endregion
Log.Debug("Binaries verified");
PendingUpdate = latestVersion;
UpdatesReady?.Invoke(this, new ReadyEventArgs(latestVersion, InstallerPath));
}
catch (Exception ex)
{
Log.Error(ex, "Failed to check updates");
}
}