public AutoUpdateInfo CheckForUpdate()
{
try
{
WebRequest request = WebRequest.Create(iUpdateFeedLocation);
request.Credentials = CredentialCache.DefaultCredentials;
if (request.Proxy != null)
{
request.Proxy.Credentials = CredentialCache.DefaultCredentials;
}
WebResponse response = request.GetResponse();
using (Stream stream = response.GetResponseStream())
{
ReleaseFeed feed = new ReleaseFeed(stream);
IReleaseJson update = feed.CheckForUpdate(iHelper.Version, iApplicationQuality, iApplicationTarget, Environment.OSVersion.Version.ToString(), DesiredQuality);
if (update != null)
{
UserLog.WriteLine(String.Format("{0} update available: {1}", update.Quality, update.Version));
return(new AutoUpdateInfo(iApplicationName,
update.Version,
feed.Json.History(),
update.UpdateUri(),
update.Quality(),
VersionSupport.Family(iHelper.Version) != VersionSupport.Family(update.Version)));
}
else
{
return(null);
}
}
}
catch (Exception ex)
{
UserLog.WriteLine(String.Format("Error caught checking for updates: {0}", ex.ToString()));
}
return(null);
}
public IReleaseJson CheckForUpdate(string aCurrentVersion, EReleaseQuality aCurrentQuality, string aCurrentPlatform, string aCurrentPlatformVersion, EReleaseQuality aDesiredQuality)
{
// select all releases that
// - are for this platform
// - have a min platform version that is less than or equal to this platform version
// - have a quality that matches the desired quality
var releases = Json.Releases.Where(r => r.Platform == aCurrentPlatform)
.Where(r => VersionSupport.ComparePartialVersions(aCurrentPlatformVersion, r.PlatformMinVersion) >= 0)
.Where(r => (r.Quality() & aDesiredQuality) == r.Quality());
// select the release with the highest version for each release quality
// - group by quality
// - order releases in each group by ascending version
// - select the last release in each group
releases = releases.GroupBy(r => r.Quality())
.Select(g => g.OrderBy(r => r.Version, new VersionComparer()).Last());
// pick the release with the highest version number and the highest quality (priority to version number)
var release = releases.OrderBy(r => r.Version, new VersionComparer())
.ThenBy(r => r.Quality())
.LastOrDefault();
if (release == null)
{
return(null);
}
// this version is a valid update if
// - its version is greater than the current app version
// - its version is the same as the current app version but its quality is greater than the current app quality
// - its version is less than the current app version and the current app quality is not in the desired quality
if (VersionSupport.ComparePartialVersions(release.Version, aCurrentVersion) > 0 ||
(VersionSupport.ComparePartialVersions(release.Version, aCurrentVersion) == 0 && release.Quality() > aCurrentQuality) ||
(VersionSupport.ComparePartialVersions(release.Version, aCurrentVersion) < 0 && (aCurrentQuality & aDesiredQuality) != aCurrentQuality))
{
return(release);
}
return(null);
}
public AutoUpdateInfo CheckForUpdate()
{
WebResponse response = null;
Stream stream = null;
try
{
WebRequest request = WebRequest.Create(iUpdateFeedLocation);
request.Credentials = CredentialCache.DefaultCredentials;
if (request.Proxy != null)
{
request.Proxy.Credentials = CredentialCache.DefaultCredentials;
}
response = request.GetResponse();
stream = response.GetResponseStream();
XmlDocument document = new XmlDocument();
XmlReaderSettings settings = new XmlReaderSettings();
settings.XmlResolver = null;
settings.ProhibitDtd = true;
XmlReader xmlReader = XmlTextReader.Create(stream, settings);
document.Load(xmlReader);
XmlNamespaceManager xmlNsMan = new XmlNamespaceManager(document.NameTable);
xmlNsMan.AddNamespace("ns", "urn:linn-co-uk/autoupdate");
string latestVersion = iHelper.Version;
string product = iHelper.Product;
AutoUpdateInfo result = null;
KeyValuePair <EUpdateType, string>[] versionTypeNodeNames = new KeyValuePair <EUpdateType, string>[]
{
new KeyValuePair <EUpdateType, string>(EUpdateType.Stable, "stable"),
new KeyValuePair <EUpdateType, string>(EUpdateType.Beta, "beta"),
new KeyValuePair <EUpdateType, string>(EUpdateType.Development, "development"),
new KeyValuePair <EUpdateType, string>(EUpdateType.Nightly, "nightly")
};
foreach (XmlNode applicationNode in document.SelectNodes(string.Format("/ns:autoupdate/ns:updateinfo[@version='{0}']/ns:application[@name='{1}']", iUpdateVersion, iApplicationName), xmlNsMan))
{
Uri historyUri = new Uri(applicationNode.SelectSingleNode("ns:history", xmlNsMan).FirstChild.Value);
foreach (KeyValuePair <EUpdateType, string> versionType in versionTypeNodeNames)
{
if ((UpdateTypes & versionType.Key) == versionType.Key)
{
foreach (XmlNode versionNode in applicationNode.SelectNodes(string.Format("ns:{0}", versionType.Value), xmlNsMan))
{
string version = versionNode.Attributes["version"].Value;
if (VersionSupport.CompareVersions(version, latestVersion) > 0 ||
(VersionSupport.CompareVersions(version, latestVersion) == 0 && versionType.Key > iApplicationBuildType))
{
XmlNode uriNode = versionNode.SelectSingleNode(String.Format("ns:url[@target='{0}']", iApplicationTarget), xmlNsMan);
if (uriNode != null)
{
UserLog.WriteLine(String.Format("{0} update available: {1}", versionType.Value, version));
Uri uri = new Uri(uriNode.InnerText);
result = new AutoUpdateInfo(iApplicationName, version, historyUri, uri, versionType.Key, VersionSupport.Family(iHelper.Version) != VersionSupport.Family(version));
latestVersion = version;
}
}
}
}
}
}
return(result);
}
catch (Exception ex)
{
UserLog.WriteLine(String.Format("Error caught checking for updates: {0}", ex.ToString()));
}
finally
{
if (response != null)
{
response.Close();
response = null;
}
if (stream != null)
{
stream.Close();
stream = null;
}
}
return(null);
}
public int Compare(string aVersionA, string aVersionB)
{
return VersionSupport.ComparePartialVersions(aVersionA, aVersionB);
}