/// <summary>
/// Parse the returned xml from the website request to extract version information
/// </summary>
/// <param name="result">version xml information</param>
/// <returns>new WinAuthVersionInfo object</returns>
private WinAuthVersionInfo ParseGetLatestVersion(string result)
{
// load xml document and pull out nodes
XmlDocument xml = new XmlDocument();
xml.LoadXml(result);
var node = xml.SelectSingleNode("//version");
Version version = null;
#if NETFX_4
Version.TryParse(node.InnerText, out version);
#endif
#if NETFX_3
try
{
version = new Version(FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location).FileVersion);
}
catch (Exception) { }
#endif
if (node != null && version != null)
{
WinAuthVersionInfo latestversion = new WinAuthVersionInfo(version);
DateTime released;
node = xml.SelectSingleNode("//released");
if (node != null && DateTime.TryParse(node.InnerText, out released) == true)
{
latestversion.Released = released;
}
#if NETFX_4
node = xml.SelectSingleNode("//url");
#endif
#if NETFX_3
node = xml.SelectSingleNode("//url35");
#endif
if (node != null && string.IsNullOrEmpty(node.InnerText) == false)
{
latestversion.Url = node.InnerText;
}
node = xml.SelectSingleNode("//changes");
if (node != null && string.IsNullOrEmpty(node.InnerText) == false)
{
latestversion.Changes = node.InnerText;
}
return(latestversion);
}
else
{
throw new InvalidOperationException("Invalid return data");
}
}
/// <summary>
/// Explicitly get the latest version information. Will be asynchronous if a callback is provided.
/// </summary>
/// <param name="callback">optional callback for async operation</param>
/// <returns>latest WinAuthVersionInfo or null if async</returns>
public virtual WinAuthVersionInfo GetLatestVersion(Action <WinAuthVersionInfo, bool, Exception> callback = null)
{
// get the update URL from the config else use the default
string updateUrl = WinAuthMain.WINAUTH_UPDATE_URL;
try
{
var settings = new System.Configuration.AppSettingsReader();
string appvalue = settings.GetValue("UpdateCheckUrl", typeof(string)) as string;
if (string.IsNullOrEmpty(appvalue) == false)
{
updateUrl = appvalue;
}
}
catch (Exception) { }
try
{
using (WebClient web = new WebClient())
{
web.Headers.Add("User-Agent", "WinAuth-" + this.CurrentVersion.ToString());
if (callback == null)
{
// immediate request
string result = web.DownloadString(updateUrl);
WinAuthVersionInfo latestVersion = ParseGetLatestVersion(result);
if (latestVersion != null)
{
// update local values
LastKnownLatestVersion = latestVersion.Version;
Config.WriteSetting(WINAUTHREGKEY_LATESTVERSION, latestVersion.Version.ToString(3));
}
return(latestVersion);
}
else
{
// initiate async operation
web.DownloadStringCompleted += new DownloadStringCompletedEventHandler(GetLatestVersionDownloadCompleted);
web.DownloadStringAsync(new Uri(updateUrl), callback);
return(null);
}
}
}
catch (Exception)
{
// don't fail if we can't get latest version
return(null);
}
}
/// <summary>
/// Callback from Updater object with latest version information
/// </summary>
/// <param name="latestInfo">latest version or null</param>
/// <param name="cancelled">flag if operation was cancelled</param>
/// <param name="error">any error exception</param>
private void Updater_GetLatestVersionCompleted(WinAuthVersionInfo latestInfo, bool cancelled, Exception error)
{
if (IsDisposed || IsHandleCreated == false)
{
return;
}
var text = string.Empty;
if (cancelled)
{
text = "Update was cancelled";
}
else if (error != null)
{
text = GetHtmlText("Error: " + error.Message);
//text = "Error: " + error.Message;
}
else
{
var latest = new Version(latestInfo.Version.Major, latestInfo.Version.Minor, latestInfo.Version.Build);
var current = new Version(Updater.CurrentVersion.Major, Updater.CurrentVersion.Minor,
Updater.CurrentVersion.Build);
if (current >= latest)
{
text = GetHtmlText("<p>Latest Version: {0}</p><p>You are on the latest version.</p>",
latest.ToString(3));
}
else
{
var info = string.Format(
"<p>Latest Version: {0} (yours {1})</p><p><a href=\"{2}\">Download version {0}</a></p></body></html>",
latest.ToString(3), current.ToString(3), latestInfo.Url);
text = GetHtmlText("{0}", info);
}
}
// update the textbox in a delegate
Invoke((MethodInvoker) delegate { versionInfoLabel.Text = text; });
}
/// <summary>
/// Parse the returned xml from the website request to extract version information
/// </summary>
/// <param name="result">version xml information</param>
/// <returns>new WinAuthVersionInfo object</returns>
private WinAuthVersionInfo ParseGetLatestVersion(string result)
{
// load xml document and pull out nodes
XmlDocument xml = new XmlDocument();
xml.LoadXml(result);
var node = xml.SelectSingleNode("//version");
Version version;
if (node != null && Version.TryParse(node.InnerText, out version) == true)
{
WinAuthVersionInfo latestversion = new WinAuthVersionInfo(version);
DateTime released;
node = xml.SelectSingleNode("//released");
if (node != null && DateTime.TryParse(node.InnerText, out released) == true)
{
latestversion.Released = released;
}
node = xml.SelectSingleNode("//url");
if (node != null && string.IsNullOrEmpty(node.InnerText) == false)
{
latestversion.Url = node.InnerText;
}
node = xml.SelectSingleNode("//changes");
if (node != null && string.IsNullOrEmpty(node.InnerText) == false)
{
latestversion.Changes = node.InnerText;
}
return(latestversion);
}
else
{
throw new InvalidOperationException("Invalid return data");
}
}
/// <summary>
/// Callback for async operation for latest version web request
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void GetLatestVersionDownloadCompleted(object sender, DownloadStringCompletedEventArgs args)
{
// no point if e have no callback
Action <WinAuthVersionInfo, bool, Exception> callback = args.UserState as Action <WinAuthVersionInfo, bool, Exception>;
if (callback == null)
{
return;
}
// report cancelled or error
if (args.Cancelled == true || args.Error != null)
{
callback(null, args.Cancelled, args.Error);
return;
}
try
{
// extract the latest version
WinAuthVersionInfo latestVersion = ParseGetLatestVersion(args.Result);
if (latestVersion != null)
{
// update local values
LastKnownLatestVersion = latestVersion.Version;
Config.WriteSetting(WINAUTHREGKEY_LATESTVERSION, latestVersion.Version.ToString(3));
}
// perform callback
callback(latestVersion, false, null);
}
catch (Exception ex)
{
// report any other error
callback(null, false, ex);
}
}
/// <summary>
/// Parse the returned xml from the website request to extract version information
/// </summary>
/// <param name="result">version xml information</param>
/// <returns>new WinAuthVersionInfo object</returns>
private WinAuthVersionInfo ParseGetLatestVersion(string result)
{
// load xml document and pull out nodes
XmlDocument xml = new XmlDocument();
xml.LoadXml(result);
var node = xml.SelectSingleNode("//version");
Version version = null;
#if NETFX_4
Version.TryParse(node.InnerText, out version);
#endif
#if NETFX_3
try
{
version = new Version(FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location).FileVersion);
}
catch (Exception) { }
#endif
if (node != null && version != null)
{
WinAuthVersionInfo latestversion = new WinAuthVersionInfo(version);
DateTime released;
node = xml.SelectSingleNode("//released");
if (node != null && DateTime.TryParse(node.InnerText, out released) == true)
{
latestversion.Released = released;
}
node = xml.SelectSingleNode("//url");
if (node != null && string.IsNullOrEmpty(node.InnerText) == false)
{
latestversion.Url = node.InnerText;
}
node = xml.SelectSingleNode("//changes");
if (node != null && string.IsNullOrEmpty(node.InnerText) == false)
{
latestversion.Changes = node.InnerText;
}
return latestversion;
}
else
{
throw new InvalidOperationException("Invalid return data");
}
}
/// <summary>
/// Parse the returned xml from the website request to extract version information
/// </summary>
/// <param name="result">version xml information</param>
/// <returns>new WinAuthVersionInfo object</returns>
private WinAuthVersionInfo ParseGetLatestVersion(string result)
{
// load xml document and pull out nodes
XmlDocument xml = new XmlDocument();
xml.LoadXml(result);
var node = xml.SelectSingleNode("//version");
Version version;
if (node != null && Version.TryParse(node.InnerText, out version) == true)
{
WinAuthVersionInfo latestversion = new WinAuthVersionInfo(version);
DateTime released;
node = xml.SelectSingleNode("//released");
if (node != null && DateTime.TryParse(node.InnerText, out released) == true)
{
latestversion.Released = released;
}
node = xml.SelectSingleNode("//url");
if (node != null && string.IsNullOrEmpty(node.InnerText) == false)
{
latestversion.Url = node.InnerText;
}
node = xml.SelectSingleNode("//changes");
if (node != null && string.IsNullOrEmpty(node.InnerText) == false)
{
latestversion.Changes = node.InnerText;
}
return latestversion;
}
else
{
throw new InvalidOperationException("Invalid return data");
}
}
/// <summary>
/// Callback from Updater object with latest version information
/// </summary>
/// <param name="latestInfo">latest version or null</param>
/// <param name="cancelled">flag if operation was cancelled</param>
/// <param name="error">any error exception</param>
void Updater_GetLatestVersionCompleted(WinAuthVersionInfo latestInfo, bool cancelled, Exception error)
{
if (this.IsDisposed == true || IsHandleCreated == false)
{
return;
}
string text = string.Empty;
if (cancelled == true)
{
text = "Update was cancelled";
}
else if (error != null)
{
text = GetHtmlText("Error: " + error.Message);
//text = "Error: " + error.Message;
}
else
{
Version latest = new Version(latestInfo.Version.Major, latestInfo.Version.Minor, latestInfo.Version.Build);
Version current = new Version(Updater.CurrentVersion.Major, Updater.CurrentVersion.Minor, Updater.CurrentVersion.Build);
if (current >= latest)
{
text = GetHtmlText("<p>Latest Version: {0}</p><p>You are on the latest version.</p>", latest.ToString(3));
}
else
{
string info = string.Format("<p>Latest Version: {0} (yours {1})</p><p><a href=\"{2}\">Download version {0}</a></p></body></html>", latest.ToString(3), current.ToString(3), latestInfo.Url);
text = GetHtmlText("{0}", info);
}
}
// update the textbox in a delegate
this.Invoke((MethodInvoker)delegate { versionInfoLabel.Text = text; });
}