internal UpdaterResult( bool updateAvailable, Uri downloadUri, ReleaseInfo[] releases ) {
UpdateAvailable = updateAvailable;
DownloadUri = downloadUri;
History = releases.OrderByDescending( r => r.Revision ).ToArray();
LatestRelease = releases.FirstOrDefault();
}
/// <summary> Checks fCraft.net for updated versions of fCraft. </summary>
public static UpdaterResult CheckForUpdates()
{
UpdaterMode mode = ConfigKey.UpdaterMode.GetEnum <UpdaterMode>();
if (mode == UpdaterMode.Disabled)
{
return(UpdaterResult.NoUpdate);
}
string url = String.Format(UpdateUri, CurrentRelease.Revision);
if (RaiseCheckingForUpdatesEvent(ref url))
{
return(UpdaterResult.NoUpdate);
}
Logger.Log(LogType.SystemActivity, "Checking for fCraft updates...");
try {
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
request.Timeout = (int)UpdateCheckTimeout.TotalMilliseconds;
request.ReadWriteTimeout = (int)UpdateCheckTimeout.TotalMilliseconds;
request.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.BypassCache);
request.UserAgent = UserAgent;
using (WebResponse response = request.GetResponse()) {
// ReSharper disable AssignNullToNotNullAttribute
using (XmlTextReader reader = new XmlTextReader(response.GetResponseStream())) {
// ReSharper restore AssignNullToNotNullAttribute
XDocument doc = XDocument.Load(reader);
XElement root = doc.Root;
// ReSharper disable PossibleNullReferenceException
if (root.Attribute("result").Value == "update")
{
string downloadUrl = root.Attribute("url").Value;
var releases = new List <ReleaseInfo>();
foreach (XElement el in root.Elements("Release"))
{
releases.Add(
new ReleaseInfo(
Int32.Parse(el.Attribute("v").Value),
Int32.Parse(el.Attribute("r").Value),
Int64.Parse(el.Attribute("date").Value).ToDateTime(),
el.Element("Summary").Value,
el.Element("ChangeLog").Value,
ReleaseInfo.StringToReleaseFlags(el.Attribute("flags").Value)
)
);
}
// ReSharper restore PossibleNullReferenceException
UpdaterResult result = new UpdaterResult((releases.Count > 0), new Uri(downloadUrl),
releases.ToArray());
RaiseCheckedForUpdatesEvent(UpdateUri, result);
return(result);
}
else
{
return(UpdaterResult.NoUpdate);
}
}
}
} catch (Exception ex) {
Logger.Log(LogType.Error,
"An error occurred while trying to check for updates: {0}: {1}",
ex.GetType(), ex.Message);
return(UpdaterResult.NoUpdate);
}
}
