private static void OnAppcastDownloadFinished(Appcast appcast)
{
try
{
AppcastDownloadFinished?.Invoke(appcast);
}
catch (Exception exp)
{
OnLogMessage("Internal error: " + exp.Message);
}
}
private static void OnNewUpdateAvailable(Appcast appcast)
{
try
{
NewUpdateAvailable?.Invoke(appcast);
}
catch
{
// ignore all
}
}
/// <summary>
/// Skip current version
/// IMPORTANT: Should be used ONLY in case of own implementation GUI for user iteraction
/// </summary>
public static void SkipThisVersion()
{
Appcast ac = __CurrentAppcast;
if (ac != null)
{
__VersionToSkip = ac.Version;
WriteRegistry();
}
Cancel();
}
static void _downloader_DownloadFinished(bool isCanceled, Exception ex)
{
try
{
lock (Locker)
{
ContinueEvent.Reset();
OnDownloadFinished(isCanceled, ex);
if (isCanceled || ex != null)
{
LastCheckTime = DateTime.Now;
WriteRegistry();
DeleteTempFile();
__Downloader = null;
}
// start installer
if (__Downloader != null &&
!string.IsNullOrEmpty(__Downloader.DestinationFilePath) &&
!string.IsNullOrEmpty(__Downloader.SourceFilePath)
)
{
// waiting for call 'Continue()/Cancel()' function
ContinueEvent.WaitOne();
if (__IsCancelled)
{
DeleteTempFile();
}
else
{
__TmpFile = Path.Combine(Path.GetDirectoryName(__Downloader.DestinationFilePath), Path.GetFileName(__Downloader.SourceFilePath));
if (File.Exists(__TmpFile))
{
File.Delete(__TmpFile);
}
// set correct extenfion
File.Move(__Downloader.DestinationFilePath, __TmpFile);
WriteRegistry();
// Check DSA signature
if (string.IsNullOrEmpty(__OpenSslPath) == false && __DsaPublicKey != null)
{
Appcast appcast = __CurrentAppcast;
if (appcast == null)
{
OnError(new UpdaterExceptionSignatureError());
return;
}
if (CheckSignature(__TmpFile, appcast.Signature) == false)
{
OnError(new UpdaterExceptionSignatureError());
return;
}
}
// start installer!
Process.Start(__TmpFile);
}
}
LastCheckTime = DateTime.Now;
WriteRegistry();
}
}
finally
{
__CurrentAppcast = null;
__Downloader = null;
IsUpdateInProgress = false;
}
}
/// <summary>
/// Perform Update
/// </summary>
/// <param name="isManualCheck">TRUE - user iteraction (called by user manually)
/// In this case, we should ignore "versionToSkip" property
/// </param>
/// <param name="checkInBackground"> Do not show "Checking for updates ..." dialog </param>
private static void DoCheckUpdate(bool isManualCheck = false, bool checkInBackground = false)
{
lock (Locker)
{
bool isUpdateReady = false;
try
{
IsUpdateInProgress = true;
__CurrentAppcast = null;
__IsCancelled = false;
ContinueEvent.Reset();
// check if downloading not finished
if (__Downloader != null)
{
return;
}
// delete rubbish from previous session
DeleteTempFile();
if (checkInBackground == false)
{
OnCheckingForUpdate();
}
// read latest appcast
try
{
if (isManualCheck && !string.IsNullOrEmpty(AppcastFilePathForManualUpdate))
{
// Appcast files for automatic and manual updates are divided.
//
// If appcast file for manual update is available AND version of manual update is newer - we should use appcast with manual update.
// Othervise - we are using 'original' appcast file for automatic updates.
try
{
Appcast manualAppcast = null;
bool isManualAppcastDownloaded = false;
Task.Run(() =>
{
try { manualAppcast = Appcast.Read(AppcastFilePathForManualUpdate); }
catch { manualAppcast = null; }
finally { isManualAppcastDownloaded = true; }
});
var defaultAppcast = Appcast.Read(AppcastFilePath);
SpinWait.SpinUntil(() => isManualAppcastDownloaded == true, 3000);
if (manualAppcast != null && defaultAppcast != null && CompareVersions(defaultAppcast.Version, manualAppcast.Version))
{
__CurrentAppcast = manualAppcast;
}
else
{
__CurrentAppcast = defaultAppcast;
}
}
catch { } // ignore all
}
if (__CurrentAppcast == null)
{
__CurrentAppcast = Appcast.Read(AppcastFilePath);
}
}
catch (UpdaterExceptionAppcastDownload ex)
{
if (isManualCheck)
{
OnError(ex);
}
//OnNothingToUpdate();
return;
}
catch (Exception)
{
if (isManualCheck)
{
OnNothingToUpdate();
}
return;
}
finally
{
LastCheckTime = DateTime.Now;
WriteRegistry();
}
// if called function Cancel()
OnAppcastDownloadFinished(__CurrentAppcast);
// if called function Cancel()
if (__IsCancelled)
{
return;
}
// check if we should skip this version
if (string.IsNullOrEmpty(__VersionToSkip) == false &&
__CurrentAppcast.Version.Equals(__VersionToSkip))
{
return;
}
if (!CompareVersions(__CurrentAppcast.Version))
{
if (isManualCheck)
{
OnNothingToUpdate();
}
return;
}
// Notification about new update
OnNewUpdateAvailable(__CurrentAppcast);
// waiting for call 'Continue()/Cancel()/SkipThisVersion()' function
ContinueEvent.WaitOne();
LastCheckTime = DateTime.Now;
WriteRegistry();
// if called function Cancel()
if (__IsCancelled)
{
return;
}
// check if we should skip this version
// if was called function SkipThisVersion()
if (string.IsNullOrEmpty(__VersionToSkip) == false &&
__CurrentAppcast.Version.Equals(__VersionToSkip))
{
return;
}
isUpdateReady = true;
}
finally
{
if (isUpdateReady == false)
{
__CurrentAppcast = null;
IsUpdateInProgress = false;
}
}
// delete rubbish from previous session
DeleteTempFile();
__TmpFile = Path.GetTempFileName();
WriteRegistry();
// save current appcast
__Downloader = new Downloader(__CurrentAppcast.UpdateLink, __TmpFile);
__Downloader.Downloaded += _downloader_Downloaded;
__Downloader.DownloadFinished += _downloader_DownloadFinished;
__Downloader.Download();
}
}
/// <summary>
/// Download and read appcast
/// </summary>
/// <param name="appcastPath"></param>
/// <returns></returns>
internal static Appcast Read(string appcastPath)
{
XmlDocument myXmlDocument = new XmlDocument();
try
{
myXmlDocument.Load(appcastPath);
}
catch (Exception ex)
{
throw new UpdaterExceptionAppcastDownload("Error loading appcast file.\n" + ex.Message + "\n\nPlease, check internet connection", ex);
}
try
{
XPathNavigator navigator = myXmlDocument.CreateNavigator();
XmlNamespaceManager xmlns = new XmlNamespaceManager(navigator.NameTable);
const string sparkleNamespaceUrl = "http://www.andymatuschak.org/xml-namespaces/sparkle";
xmlns.AddNamespace("sparkle", sparkleNamespaceUrl);
if (myXmlDocument.DocumentElement == null)
{
throw new UpdaterExceptionAppcastDownload("Error loading appcast file.");
}
Appcast appcast = new Appcast();
XmlNode releaseNotesNode = myXmlDocument.DocumentElement.SelectSingleNode("/rss/channel/item/sparkle:releaseNotesLink", xmlns);
if (releaseNotesNode != null)
{
string rn = releaseNotesNode.InnerText.Trim();
if (!string.IsNullOrEmpty(rn))
{
appcast.ReleaseNotesLink = releaseNotesNode.InnerText.Trim();
}
}
XmlNode enclosureNode = myXmlDocument.DocumentElement.SelectSingleNode("/rss/channel/item/enclosure");
if (enclosureNode == null || enclosureNode.Attributes == null)
{
throw new UpdaterExceptionAppcastParsing("Not found information about update");
}
XmlAttribute urlAttr = enclosureNode.Attributes["url"];
XmlAttribute versionAttr = enclosureNode.Attributes["sparkle:version"];
XmlAttribute lengthAttr = enclosureNode.Attributes["length"];
XmlAttribute dsaSignatureAttr = enclosureNode.Attributes["sparkle:dsaSignature"];
if (urlAttr == null)
{
throw new UpdaterExceptionAppcastParsing("Update link not defined");
}
if (versionAttr == null)
{
throw new UpdaterExceptionAppcastParsing("Version not defined");
}
if (!Uri.IsWellFormedUriString(urlAttr.InnerText.Trim(), UriKind.RelativeOrAbsolute))
{
throw new UpdaterExceptionAppcastParsing("Update link error");
}
appcast.UpdateLink = urlAttr.InnerText.Trim();
appcast.Version = versionAttr.InnerText.Trim();
UInt32 length;
if (lengthAttr != null && UInt32.TryParse(lengthAttr.InnerText.Trim(), out length))
{
appcast.Length = length;
}
appcast.Signature = dsaSignatureAttr.InnerText.Trim();
return(appcast);
}
catch (Exception ex)
{
throw new UpdaterExceptionAppcastParsing("Error parsing appcast file", ex);
}
}