/// <summary>
/// Initializes a new instances of <see cref="NotificationEventArgs"/> class
/// </summary>
/// <param name="updater">The application update details</param>
public NotificationEventArgs(UpdaterInformation updater)
{
this.UpdateInfo = updater;
}
/// <summary>
/// Retrieve update information from appcast file
/// </summary>
/// <param name="assembly"></param>
/// <param name="token"></param>
/// <returns></returns>
private async Task <UpdaterInformation> GetUpdateDetilsFromAppCast(CancellationToken token = default(CancellationToken))
{
if (token.IsCancellationRequested)
{
throw new TaskCanceledException();
}
var webRequest = WebRequest.Create(this.AppcastUrl);
if (this.UpdaterOptions.AppcastFileAuthentication != null)
{
webRequest.Headers[HttpRequestHeader.Authorization] = this.UpdaterOptions.AppcastFileAuthentication.ToString();
}
webRequest.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);
WebResponse webResponse;
try
{
webResponse = await webRequest.GetResponseAsync().ConfigureAwait(false);
}
catch (Exception)
{
return(null);
}
UpdaterInformation updater;
using (Stream appCastStream = webResponse?.GetResponseStream())
{
if (token.IsCancellationRequested)
{
webResponse?.Close();
throw new TaskCanceledException();
}
if (appCastStream != null)
{
if (this.ParseUpdateInformation != null)
{
using (StreamReader streamReader = new StreamReader(appCastStream))
{
string data = await streamReader.ReadToEndAsync().ConfigureAwait(false);
ParseUpdateInfoEventArgs parseArgs = new ParseUpdateInfoEventArgs(data);
this.ParseUpdateInformation.Invoke(this, parseArgs);
updater = parseArgs.UpdateInfo;
}
}
else
{
XmlDocument receivedAppCastDocument = new XmlDocument();
try
{
receivedAppCastDocument.Load(appCastStream);
XmlNodeList appCastItems = receivedAppCastDocument.SelectNodes("item");
updater = new UpdaterInformation();
if (appCastItems != null)
{
foreach (XmlNode item in appCastItems)
{
XmlNode appCastVersion = item.SelectSingleNode("version");
try
{
updater.CurrentVersion = new Version(appCastVersion?.InnerText);
}
catch (Exception)
{
updater.CurrentVersion = null;
}
XmlNode appCastChangeLog = item.SelectSingleNode("changelog");
updater.ChangelogURL = appCastChangeLog?.InnerText;
XmlNode appCastUrl = item.SelectSingleNode("url");
updater.DownloadURL = appCastUrl?.InnerText;
XmlNode umode = item.SelectSingleNode("updatemode");
var updateMode = (EazyUpdateMode)Enum.Parse(typeof(EazyUpdateMode), umode?.InnerText);
if (!Enum.IsDefined(typeof(EazyUpdateMode), updateMode))
{
throw new InvalidDataException(
$"{updateMode} is not an underlying value of the Mode enumeration.");
}
updater.UpdateMode = updateMode;
XmlNode appArgs = item.SelectSingleNode("args");
updater.InstallerArgs = appArgs?.InnerText;
XmlNode checksum = item.SelectSingleNode("checksum");
updater.HashingAlgorithm = checksum?.Attributes["algorithm"]?.InnerText;
updater.Checksum = checksum?.InnerText;
}
}
}
catch (XmlException)
{
webResponse?.Close();
return(null);
}
}
}
else
{
webResponse?.Close();
return(null);
}
}
webResponse?.Close();
return(updater);
}
