private async Task <TokenInfo> AuthenticationResultAsync(IKeyValueSettings settings, IPlatformParameters platformParameters)
{
var authContext = GetContext(settings, out string serviceId, out string clientId, out string authority);
var redirectUri = new Uri(settings.Values[TokenKeys.RedirectUrl]);
Logger.Technical().From <AdalTokenProvider>().System($"{TokenKeys.RedirectUrl} = {redirectUri}.").Log();
Logger.Technical().From <AdalTokenProvider>().System("Acquire a token.").Log();
// Start Vpn if needed.
Network.Handler.OnCalling?.Invoke(new Uri(authority));
AuthenticationResult result = null;
// Check if we have an AuthenticationResult cached and still valid.
if (_resultCache.ContainsKey(clientId))
{
result = _resultCache[clientId];
// Is valid with a security margin of 1 minute.
if (null == result || result.ExpiresOn.LocalDateTime.AddMinutes(-1) < DateTime.Now)
{
Logger.Technical().From <AdalTokenProvider>().System($"Token cached for clientId = {clientId} is expired. Is removed from the cache.").Log();
_resultCache.Remove(clientId);
result = null;
}
}
if (null == result)
{
result = await authContext.AcquireTokenAsync(serviceId, clientId, redirectUri, platformParameters);
_resultCache.Add(clientId, result);
Logger.Technical().From <AdalTokenProvider>().System($"Add the token in the cache for clientId = {clientId}.").Log();
}
if (null != result)
{
// Dump no sensitive information.
Logger.Technical().From <AdalTokenProvider>().System($"Token information for user {result.UserInfo.DisplayableId}.").Log();
Logger.Technical().From <AdalTokenProvider>().System($"Token expiration = {result.ExpiresOn.ToString("dd-MM-yyyy HH:mm:ss")}.").Log();
return(result.ToTokenInfo());
}
return(null);
}