internal bool BeginDownloadManifest()
{
try
{
if ((DownloaderState)this.downloadState.Current != DownloaderState.Idle)
{
EventLogger.Instance.Add("Cannot download manifest. Downloader state isn't idle.");
return(false);
}
this.downloadState.Current = DownloaderState.DownloadingManifest;
EventLogger.Instance.Add("Downloading manifest...");
ServiceIo.CleanDownloadFolder();
DownloadInfo inf = new DownloadInfo();
inf.Manifest = null;
inf.DownloadId = (Int32)Downloadables.UpdateManifest;
this.webClient.DownloadFileAsync(
this.updateManifestUri,
ServiceIo.GetManifestFilePath(),
inf);
return(true);
}
catch (Exception ex)
{
this.downloadState.Current = DownloaderState.Idle;
EventLogger.Instance.Add(ex.Message);
}
return(false);
}
public bool ReloadSettings()
{
try
{
return(ServiceIo.LoadSettings());
}
catch (Exception ex)
{
EventLogger.Instance.Add(ex.Message);
}
return(false);
}
private UpdateManifestInfo GetNewVersionInfo()
{
try
{
object tmpCurr = this.state.Current;
this.state.Current = UpdaterStatus.CheckingVersion;
UpdateManifestInfo info = GetManifestInfo();
if (info == null)
{
EventLogger.Instance.Add("Cannot get manifest file info. Version comparison failed.");
}
else
{
System.Reflection.AssemblyName asm = ServiceIo.GetUpdateAssembly();
if (asm == null)
{
EventLogger.Instance.Add("Cannot get update application assembly. Version comparison failed.");
}
else
{
Version currentVersion = asm.Version;
Version latestVersion = new Version(info.UpdateVersion);
if (latestVersion > currentVersion)
{
this.IsNewVersionAvailable = true;
RaiseNewVersionExists(info);
return(info);
}
else
{
this.IsNewVersionAvailable = false;
}
}
}
this.state.Current = tmpCurr;
}
catch (Exception ex)
{
//this.state.Current = UpdaterStatus.Idle;
EventLogger.Instance.Add(ex.Message);
}
return(null);
}
private void OnPackageDownloadComplete(DownloadInfo downloadInfo)
{
try
{
if (ServiceIo.ExtractDownloadedPackage(downloadInfo.Manifest))
{
ServiceIo.Cleanup(downloadInfo.Manifest);
this.state.Current = UpdaterStatus.PackageDownloadCompleted;
this.IsDownloadComplete = true;
RaiseNewVersionDownloaded(downloadInfo);
return;
}
}
catch (Exception ex)
{
EventLogger.Instance.Add(ex.Message);
}
this.state.Current = UpdaterStatus.Idle;
}
public void Start()
{
try
{
ServiceIo.LoadSettings();
SetupDownloader();
if (this.updaterThread == null)
{
SetupThread();
}
if (!this.updaterThread.IsAlive)
{
this.updaterThread.Start();
}
}
catch (Exception ex)
{
EventLogger.Instance.Add(ex.Message);
}
}
internal bool BeginDownloadPackage(UpdateManifestInfo manifest)
{
try
{
if ((DownloaderState)this.downloadState.Current == DownloaderState.DownloadingManifest ||
(DownloaderState)this.downloadState.Current == DownloaderState.DownloadingPackage)
{
EventLogger.Instance.Add("Cannot download package. Downloader is already downloading.");
return(false);
}
if (manifest == null)
{
return(false);
}
EventLogger.Instance.Add("Downloading package...");
this.downloadState.Current = DownloaderState.DownloadingPackage;
DownloadInfo inf = new DownloadInfo();
inf.Manifest = manifest;
inf.DownloadId = (Int32)Downloadables.UpdatePackage;
this.webClient.DownloadFileAsync(
new Uri(manifest.UpdatePackageUri),
ServiceIo.GetPackageFilePath(inf.Manifest),
inf);
return(true);
}
catch (Exception ex)
{
this.downloadState.Current = DownloaderState.Idle;
EventLogger.Instance.Add(ex.Message);
}
return(false);
}
// Loads downloaded manifest file
private UpdateManifestInfo GetManifestInfo()
{
return(ServiceIo.LoadManifestFile());
}
// closes app, overwrites downloaded files and returns
private bool ApplyDownloadedUpdate()
{
try
{
if (!this.IsNewVersionAvailable)
{
return(false);
}
this.state.Current = UpdaterStatus.ApplyingUpdates;
string processName = ServiceIo.GetUpdateAppProcessName();
EventLogger.Instance.Add("Closing process: " + processName);
// Ensure app is closed
if (WindowsProcessController.IsProcessAlive(processName))
{
System.Threading.Thread.Sleep(1000);
if (WindowsProcessController.IsProcessAlive(processName))
{
WindowsProcessController.KillProcess(processName);
System.Threading.Thread.Sleep(1000);
}
}
if (WindowsProcessController.IsProcessAlive(processName))
{
EventLogger.Instance.Add("Failed to stop process. Updates weren't applied");
return(false);
}
// Backup before overwriting files
EventLogger.Instance.Add("Backing up files.");
if (!ServiceIo.BackupStartupDirectory())
{
return(false);
}
// Restore backup if overwrite failed
EventLogger.Instance.Add("Copying new files");
if (!ServiceIo.OverwriteDownloadedFiles())
{
EventLogger.Instance.Add("Overwrite failed, restoring backup");
ServiceIo.RestoreStartupDirectory();
}
// Clean up
EventLogger.Instance.Add("Cleaning up.");
ServiceIo.CleanupBackups();
// Update state
this.IsDownloadComplete = false;
this.IsNewVersionAvailable = false;
this.state.Current = UpdaterStatus.Idle;
// Restarting app
WindowsProcessController.Execute(ServiceIo.GetUpdateAppPath());
return(true);
}
catch (Exception ex)
{
this.state.Current = UpdaterStatus.Idle;
EventLogger.Instance.Add(ex.Message);
}
return(false);
}
