} // func GetExcelAddinVersion
public void ClearCredentials()
{
request = null;
fullName = null;
IsAuthentificatedChanged?.Invoke(this, EventArgs.Empty);
} // proc ClearCredentials
} // proc ClearCredentials
public async Task <PpsLoginResult> LoginAsync(IWin32Window parent)
{
var newRequest = DEHttpClient.Create(info.Uri, null, Encoding);
try
{
// get app-info
var xInfo = await newRequest.GetXmlAsync("info.xml?app=" + formsApplication.ApplicationId);
// check version
var clientVersion = GetExcelAddinVersion();
var assemblyVesion = GetExcelAssemblyVersion();
var serverVersion = new Version(xInfo.GetAttribute("version", "1.0.0.0"));
#if DEBUG
assemblyVesion = serverVersion = clientVersion;
#endif
if (clientVersion < serverVersion) // new version is provided
{
return(await UpdateApplicationAsync(newRequest, xInfo.GetAttribute("src", null))
? PpsLoginResult.Restart
: PpsLoginResult.Canceled);
}
else if (assemblyVesion < clientVersion) // new version is installed, but not active
{
return(AskForRestart()
? PpsLoginResult.Restart
: PpsLoginResult.Canceled);
}
// update mime type mappings
PpsShellExtensions.UpdateMimeTypesFromInfo(xInfo);
// open trust stroe
using (var login = new PpsClientLogin("ppsn_env:" + info.Uri.ToString(), info.Name, false))
{
var loginCounter = 0; // first time, do not show login dialog
while (true)
{
// show login dialog
if (loginCounter > 0)
{
if (!await InvokeAsync(() => login.ShowWindowsLogin(parent.Handle)))
{
return(PpsLoginResult.Canceled);
}
}
// create new client request
loginCounter++;
newRequest?.Dispose();
newRequest = DEHttpClient.Create(info.Uri, login.GetCredentials(true), Encoding);
// try login with user
try
{
// execute login
var xLogin = await newRequest.GetXmlAsync("login.xml");
request = newRequest;
IsAuthentificatedChanged?.Invoke(this, EventArgs.Empty);
fullName = xLogin.GetAttribute("FullName", (string)null);
login.Commit();
return(PpsLoginResult.Sucess);
}
catch (HttpResponseException e)
{
switch (e.StatusCode)
{
case HttpStatusCode.Unauthorized:
if (loginCounter > 1)
{
ShowMessage("Passwort oder Nutzername falsch.");
}
break;
default:
formsApplication.ShowMessage(String.Format("Verbindung mit fehlgeschlagen.\n{0} ({2} {1})", e.Message, e.StatusCode, (int)e.StatusCode), MessageBoxIcon.Error);
return(PpsLoginResult.Canceled);
}
}
}
}
}
catch (HttpRequestException e)
{
newRequest?.Dispose();
if (e.InnerException is WebException we)
{
switch (we.Status)
{
case WebExceptionStatus.Timeout:
case WebExceptionStatus.ConnectFailure:
ShowMessage("Server nicht erreichbar.");
return(PpsLoginResult.Canceled);
}
}
else
{
ShowException(ExceptionShowFlags.None, e, "Verbindung fehlgeschlagen.");
}
return(PpsLoginResult.Canceled);
}
catch
{
newRequest?.Dispose();
throw;
}
} // func LoginAsync
