private string GetUserPrincipalName(int nameFormat)
{
// TODO: there is discrepancy between the implementation of this method on net45 - throws if upn not found - and uap and
// the rest of the platforms - returns ""
uint userNameSize = 0;
WindowsNativeMethods.GetUserNameEx(nameFormat, null, ref userNameSize);
if (userNameSize == 0)
{
throw new MsalClientException(
MsalError.GetUserNameFailed,
MsalErrorMessage.GetUserNameFailed,
new Win32Exception(Marshal.GetLastWin32Error()));
}
var sb = new StringBuilder((int)userNameSize);
if (!WindowsNativeMethods.GetUserNameEx(nameFormat, sb, ref userNameSize))
{
throw new MsalClientException(
MsalError.GetUserNameFailed,
MsalErrorMessage.GetUserNameFailed,
new Win32Exception(Marshal.GetLastWin32Error()));
}
return(sb.ToString());
}
/// <summary>
/// Get the user logged in to Windows or throws
/// </summary>
/// <returns>Upn or throws</returns>
public async Task <string> GetUserPrincipalNameAsync()
{
// TODO: there is discrepancy between the implementation of this method on net45 - throws if upn not found - and uap and
// the rest of the platforms - returns ""
return(await Task.Factory.StartNew(() =>
{
const int NameUserPrincipal = 8;
uint userNameSize = 0;
WindowsNativeMethods.GetUserNameEx(NameUserPrincipal, null, ref userNameSize);
if (userNameSize == 0)
{
throw MsalExceptionFactory.GetClientException(
CoreErrorCodes.GetUserNameFailed,
CoreErrorMessages.GetUserNameFailed,
new Win32Exception(Marshal.GetLastWin32Error()));
}
StringBuilder sb = new StringBuilder((int)userNameSize);
if (!WindowsNativeMethods.GetUserNameEx(NameUserPrincipal, sb, ref userNameSize))
{
throw MsalExceptionFactory.GetClientException(
CoreErrorCodes.GetUserNameFailed,
CoreErrorMessages.GetUserNameFailed,
new Win32Exception(Marshal.GetLastWin32Error()));
}
return sb.ToString();
}).ConfigureAwait(false));
}