private void LogInnerExceptionRecursive(Exception ex)
{
if (ex.InnerException != null)
{
UpdaterLogger.Log("Message: " + ex.InnerException.Message);
LogInnerExceptionRecursive(ex.InnerException);
}
}
/// <summary>
/// Reads local build information.
/// </summary>
public void ReadLocalBuildInfo()
{
try
{
if (File.Exists(localBuildInfo.BuildPath + LOCAL_BUILD_INFO_FILE))
{
localBuildInfo.Parse(localBuildInfo.BuildPath + LOCAL_BUILD_INFO_FILE);
}
}
catch (ParseException ex)
{
UpdaterLogger.Log("Failed to parse local build information. Message: " + ex.Message);
}
}
/// <summary>
/// Gathers a list of files to download for the update.
/// </summary>
private List <RemoteFileInfo> GatherFilesToDownload(string buildPath,
string downloadDirectory)
{
List <RemoteFileInfo> filesToDownload = new List <RemoteFileInfo>();
// This could be multithreaded later on for faster processing,
// calculating the SHA1 hashes can take a lot of time
for (int i = 0; i < remoteBuildInfo.FileInfos.Count; i++)
{
var remoteFileInfo = remoteBuildInfo.FileInfos[i];
UpdateProgressChanged?.Invoke(this, new UpdateProgressEventArgs(
UpdateProgressState.PREPARING, 0,
(int)(i / (double)remoteBuildInfo.FileInfos.Count * 100.0), string.Empty));
if (!File.Exists(buildPath + remoteFileInfo.FilePath))
{
if (!File.Exists(downloadDirectory + remoteFileInfo.FilePath))
{
UpdaterLogger.Log("File " + remoteFileInfo.FilePath + " doesn't exist, adding it to the download queue.");
filesToDownload.Add(remoteFileInfo);
}
else if (!HashHelper.FileHashMatches(downloadDirectory + remoteFileInfo.FilePath,
remoteFileInfo.UncompressedHash))
{
UpdaterLogger.Log("File " + remoteFileInfo.FilePath + " exists in the " +
"temporary directory, but it's different from the remote version. Adding it to the download queue.");
filesToDownload.Add(remoteFileInfo);
}
}
else
{
if (!HashHelper.FileHashMatches(buildPath + remoteFileInfo.FilePath, remoteFileInfo.UncompressedHash))
{
UpdaterLogger.Log("File " + remoteFileInfo.FilePath + " is different from the " +
"remote version, adding it to the download queue.");
filesToDownload.Add(remoteFileInfo);
}
else
{
UpdaterLogger.Log("File " + remoteFileInfo.FilePath + " is up to date.");
}
}
}
return(filesToDownload);
}
/// <summary>
/// Cleans up the temporary download directory. Deletes files that don't
/// exist in the download queue.
/// </summary>
/// <param name="filesToDownload">A list of files to download.</param>
private void CleanUpDownloadDirectory(List <RemoteFileInfo> filesToDownload, string downloadDirectory)
{
string[] files = Directory.GetFiles(downloadDirectory);
foreach (string filePath in files)
{
// Remove the download directory from the file path
string subPath = filePath.Substring(downloadDirectory.Length);
if (filesToDownload.Find(fi => fi.GetFilePathWithCompression() == subPath) == null)
{
UpdaterLogger.Log("Deleting file " + subPath + " from the download " +
"directory as part of the clean-up process.");
File.Delete(filePath);
}
}
}
private void PerformUpdateInternal()
{
UpdaterLogger.Log("Performing update.");
CreateTemporaryDirectory();
UpdateMirror updateMirror = updateMirrors[lastUpdateMirrorId];
char dsc = Path.DirectorySeparatorChar;
string buildPath = localBuildInfo.BuildPath;
string downloadDirectory = buildPath + TEMPORARY_UPDATER_DIRECTORY + dsc;
List <RemoteFileInfo> filesToDownload = GatherFilesToDownload(buildPath, downloadDirectory);
CleanUpDownloadDirectory(filesToDownload, downloadDirectory);
UpdaterLogger.Log("Creating downloader.");
UpdateDownloader downloader = new UpdateDownloader();
downloader.DownloadProgress += Downloader_DownloadProgress;
UpdateDownloadResult result = downloader.DownloadUpdates(buildPath, downloadDirectory, filesToDownload, updateMirror);
downloader.DownloadProgress -= Downloader_DownloadProgress;
lock (locker)
{
updateInProgress = false;
}
switch (result.UpdateDownloadResultState)
{
case UpdateDownloadResultType.CANCELLED:
UpdateCancelled?.Invoke(this, EventArgs.Empty);
return;
case UpdateDownloadResultType.COMPLETED:
// If a new second-stage updater was downloaded, update it
// first before launching it
string originalSecondStageUpdaterPath = localBuildInfo.BuildPath + SecondStageUpdaterPath;
string updatedSecondStageUpdaterPath = localBuildInfo.BuildPath +
TEMPORARY_UPDATER_DIRECTORY + dsc +
SecondStageUpdaterPath;
if (File.Exists(updatedSecondStageUpdaterPath))
{
File.Delete(originalSecondStageUpdaterPath);
File.Move(updatedSecondStageUpdaterPath, originalSecondStageUpdaterPath);
}
// Also update the second-stage updater's config file
string originalSecondStageConfigPath = Path.GetDirectoryName(originalSecondStageUpdaterPath)
+ dsc + SECOND_STAGE_UPDATER_CONFIGURATION_FILE;
string updatedSecondStageConfigPath = Path.GetDirectoryName(updatedSecondStageUpdaterPath)
+ dsc + SECOND_STAGE_UPDATER_CONFIGURATION_FILE;
if (File.Exists(updatedSecondStageConfigPath))
{
File.Delete(originalSecondStageConfigPath);
File.Move(updatedSecondStageConfigPath, originalSecondStageConfigPath);
}
// Generate local build information file
LocalBuildInfo newBuildInfo = LocalBuildInfoFromRemoteBuildInfo();
newBuildInfo.Write(localBuildInfo.BuildPath + TEMPORARY_UPDATER_DIRECTORY + dsc + LOCAL_BUILD_INFO_FILE);
Process.Start(originalSecondStageUpdaterPath);
// No null checking necessary here, it's actually better to
// crash the application in case this is not subscribed to
DownloadCompleted.Invoke(this, EventArgs.Empty);
return;
case UpdateDownloadResultType.FAILED:
UpdateFailed?.Invoke(this, new UpdateFailureEventArgs(result.ErrorDescription));
return;
}
}
private void CheckForUpdatesInternal()
{
UpdaterLogger.Log("Checking for updates.");
updateMirrors = updateMirrors.OrderBy(um => um.Rating).ToList();
using (WebClient webClient = CreateWebClient())
{
webClient.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
webClient.Encoding = Encoding.GetEncoding(1252);
CreateTemporaryDirectory();
int i = 0;
UpdateMirror updateMirror;
string downloadDirectory = localBuildInfo.BuildPath + TEMPORARY_UPDATER_DIRECTORY + Path.DirectorySeparatorChar;
while (i < updateMirrors.Count)
{
updateMirror = updateMirrors[i];
UpdaterLogger.Log("Attempting to download version information from " +
updateMirror.UIName + " (" + updateMirror.URL + ")");
try
{
webClient.DownloadFile(updateMirror.URL + REMOTE_BUILD_INFO_FILE, downloadDirectory + REMOTE_BUILD_INFO_FILE);
UpdaterLogger.Log("Version information downloaded, proceeding to parsing it.");
remoteBuildInfo = new RemoteBuildInfo();
remoteBuildInfo.Parse(downloadDirectory + REMOTE_BUILD_INFO_FILE);
lastUpdateMirrorId = i;
lock (locker)
{
updateCheckInProgress = false;
}
if (remoteBuildInfo.ProductVersionInfo.VersionNumber == localBuildInfo.ProductVersionInfo.VersionNumber)
{
BuildState = BuildState.UPTODATE;
BuildUpToDate?.Invoke(this, EventArgs.Empty);
return;
}
else
{
BuildState = BuildState.OUTDATED;
BuildOutdated?.Invoke(this, new BuildOutdatedEventArgs(
remoteBuildInfo.ProductVersionInfo.DisplayString, GetUpdateSize()));
return;
}
}
catch (WebException ex)
{
UpdaterLogger.Log("WebException when downloading version information: " + ex.Message);
i++;
}
catch (ParseException ex)
{
UpdaterLogger.Log("ParseException when parsing version information: " + ex.Message);
i++;
}
catch (FormatException ex)
{
UpdaterLogger.Log("FormatException when parsing version information: " + ex.Message);
i++;
}
}
}
UpdaterLogger.Log("Failed to download version information from all update mirrors. Aborting.");
lock (locker)
{
updateCheckInProgress = false;
}
UpdateCheckFailed?.Invoke(this, EventArgs.Empty);
}
private void VerifyFiles()
{
while (true)
{
IndexedRemoteFileInfo indexedFileInfo;
if (stopped)
{
break;
}
lock (locker)
{
indexedFileInfo = filesToCheck[0];
}
RemoteFileInfo fileInfo = indexedFileInfo.FileInfo;
bool checkFileHash = true;
if (fileInfo.Compressed)
{
try
{
CompressionHelper.DecompressFile(downloadDirectory + fileInfo.GetFilePathWithCompression(),
downloadDirectory + fileInfo.FilePath);
File.Delete(downloadDirectory + fileInfo.GetFilePathWithCompression());
}
catch (Exception ex)
{
// The SevenZip compressor doesn't define what exceptions
// it might throw, so we'll just catch them all
UpdaterLogger.Log("Decompressing file " + fileInfo.FilePath + " failed! Message: " + ex.Message);
VerificationFailed?.Invoke(this, new IndexEventArgs(indexedFileInfo.Index));
queueReady = false;
checkFileHash = false;
}
}
if (checkFileHash)
{
if (!HashHelper.FileHashMatches(downloadDirectory + fileInfo.FilePath, fileInfo.UncompressedHash))
{
UpdaterLogger.Log("File " + fileInfo.FilePath + " failed verification!");
VerificationFailed?.Invoke(this, new IndexEventArgs(indexedFileInfo.Index));
queueReady = false;
}
else
{
UpdaterLogger.Log("File " + fileInfo.FilePath + " passed verification.");
}
}
bool waitingForWork = false;
lock (locker)
{
filesToCheck.RemoveAt(0);
waitingForWork = filesToCheck.Count == 0;
waitHandle.Reset();
if (queueReady && waitingForWork)
{
Completed?.Invoke(this, EventArgs.Empty);
break;
}
//if (stopped)
//{
// filesToCheck.Clear();
// break;
//}
}
if (waitingForWork)
{
waitHandle.WaitOne();
}
}
lock (locker)
{
waitHandle.Dispose();
waitHandle = null;
}
// We could also dispose of verifierTask, but it sounds like we don't need to bother
// https://blogs.msdn.microsoft.com/pfxteam/2012/03/25/do-i-need-to-dispose-of-tasks/
// In case we'd still want to do it, it'd be safest for this class to have a function
// for disposing the task (maybe this class could implement IDisposable), and the
// user of this class would then call it
}
/// <summary>
/// Starts downloading an update.
/// </summary>
/// <param name="buildPath">The local build path.</param>
/// <param name="downloadDirectory">The download directory.</param>
/// <param name="filesToDownload">A list of files to download.</param>
/// <param name="updateMirror">The update mirror to use.</param>
public UpdateDownloadResult DownloadUpdates(string buildPath, string downloadDirectory,
List <RemoteFileInfo> filesToDownload, UpdateMirror updateMirror)
{
if (filesToDownload.Count == 0)
{
return(new UpdateDownloadResult(UpdateDownloadResultType.COMPLETED));
}
cancelled = false;
this.filesToDownload = filesToDownload;
this.downloadDirectory = downloadDirectory;
this.updateMirror = updateMirror;
foreach (var fileInfo in filesToDownload)
{
totalUpdateSize += fileInfo.GetDownloadSize();
}
verifierWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
verifier = new Verifier(downloadDirectory);
verifier.VerificationFailed += Verifier_VerificationFailed;
verifier.Completed += Verifier_Completed;
webClient = new WebClient()
{
CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore),
Encoding = Encoding.GetEncoding(1252)
};
webClient.DownloadProgressChanged += WebClient_DownloadProgressChanged;
fileIndexesToDownload = new List <int>();
for (int i = 0; i < filesToDownload.Count; i++)
{
fileIndexesToDownload.Add(i);
}
fileIndexesToDownload.Reverse();
fileIndexErrorCounts = new int[filesToDownload.Count];
while (true)
{
int fileIndex;
lock (fileListLocker)
{
// If we have downloaded all files and the verifier has
// succesfully verified them, the list of file indexes to
// download has no entries -> we don't have any work left
if (fileIndexesToDownload.Count == 0)
{
break;
}
fileIndex = fileIndexesToDownload[fileIndexesToDownload.Count - 1];
currentlyDownloadedFile = filesToDownload[fileIndex];
if (fileIndexErrorCounts[fileIndex] > MAX_ERROR_COUNT)
{
return(CleanUpAndReturnResult(UpdateDownloadResultType.FAILED,
"Failed to download file " + currentlyDownloadedFile.FilePath));
}
}
Task downloadTask = null;
try
{
// By both checking for cancellation and starting a new download
// task in the same lock block that's also used in Cancel() we're
// making sure that a call to Cancel() will take effect right
// away - either we're executing the code above meaning we'll
// check for cancellation soon, or we're waiting for a download to
// finish - and Cancel() cancels the download operation in case
// one is going on
lock (cancellationLocker)
{
if (cancelled)
{
return(CleanUpAndReturnResult(UpdateDownloadResultType.CANCELLED));
}
string fileSavePath = downloadDirectory + currentlyDownloadedFile.GetFilePathWithCompression();
Directory.CreateDirectory(Path.GetDirectoryName(fileSavePath));
downloadTask = webClient.DownloadFileTaskAsync(
new Uri(updateMirror.URL + currentlyDownloadedFile.GetFilePathWithCompression().Replace('\\', '/')),
fileSavePath);
}
downloadTask.Wait();
downloadTask.Dispose();
lock (downloadedBytesLocker)
downloadedBytes += currentlyDownloadedFile.GetDownloadSize();
verifier.VerifyFile(new IndexedRemoteFileInfo(currentlyDownloadedFile, fileIndex));
}
catch (AggregateException ex)
{
downloadTask.Dispose();
if (cancelled)
{
return(CleanUpAndReturnResult(UpdateDownloadResultType.CANCELLED));
}
UpdaterLogger.Log("Exception while downloading file " +
currentlyDownloadedFile.FilePath);
LogInnerExceptionRecursive(ex);
lock (fileListLocker)
{
fileIndexErrorCounts[fileIndex]++;
}
continue;
}
bool waitingForVerifier = false;
lock (fileListLocker)
{
// Remove the downloaded file from the download queue
fileIndexesToDownload.Remove(fileIndex);
waitingForVerifier = fileIndexesToDownload.Count == 0;
}
if (waitingForVerifier)
{
// We have downloaded all the files, wait for the verifier
// to finish verifying them
verifier.SetQueueReady();
verifierWaitHandle.WaitOne();
}
}
return(CleanUpAndReturnResult(UpdateDownloadResultType.COMPLETED));
}
