Saving/Restoring OAuth2 tokens

[Alex94102]

Did you ever get this to work? I am in the same boat.

[mescalinum]

Did you get this to work?

I also have the need to store the token (to avoid entering credentials each time the application starts) but haven't found an official way to do it.

[JeroenDierckx]

Instead of creating a new topic, I'll just reply to this one because I want to do the same thing: (securely) storing my refresh token so I can use it to re-authenticate instead of going through the browser login process every time.

Did anyone get this to work? I am trying to use it for TrainingPeaks which should be compliant to the OAuth2 spec. Authenticating works perfectly. Refreshing the token does not.

When I try to use the refreshAccessToken method, the flow goes into the RefreshingAccessToken stage but nothing else happens. When I try again, I get this error:

qt.networkauth.oauth2: Cannot refresh access token. Refresh Access Token is already in progress

Note that this also happens when I try to refresh the token after successfully authenticating, not only when trying this after starting the application.

Is there a way to debug this issue? I connected to all signals (that I know of) of the authentication flow but apart from the stage changing, nothing happens. I also called QLoggingCategory::setFilterRules("qt.networkauth.*=true") but nothing seems to happen.

[JeroenDierckx]

In my case, the problem was that client_id and client_secret are not automatically added to the request parameters when refreshing the token.

I added a comment to the relevant bug report: https://bugreports.qt.io/browse/QTBUG-59104

[Higestromm]

Got the same problem.
Here is the way I use ton check and get or refresh my token :

void GoogleAPI::grant(bool p_synchronousGrant)
{
	try
	{
		if (m_tokenExpiration > QDateTime::currentDateTime()) throw PFHCancelException();

		quint16 port(55568);
		QUrl authorizationUrl("https://accounts.google.com/o/oauth2/v2/auth");
		QUrl accessTokenUrl("https://www.googleapis.com/oauth2/v4/token");
		QString clientId("yyyyyy");
		QString password("xxxxxx");

		QOAuthHttpServerReplyHandler* replyHandler = new QOAuthHttpServerReplyHandler(port, this);
		m_oauth2.setReplyHandler(replyHandler);
		m_oauth2.setAuthorizationUrl(authorizationUrl);
		m_oauth2.setAccessTokenUrl(accessTokenUrl);
		m_oauth2.setClientIdentifier(clientId);
		m_oauth2.setClientIdentifierSharedKey(password);
		m_oauth2.setScope(m_scopes.join(' '));
		m_oauth2.setRefreshToken(m_refreshToken);
		

		QSignalSpy spy(this, SIGNAL(accessGranted()));

		if (!m_refreshToken.isEmpty())
		{
			m_oauth2.refreshAccessToken();
		}
		else
		{
			m_oauth2.grant();
		}

		if (p_synchronousGrant)
		{
			if (!spy.wait(60000)) throw PFHException("Google API Connexion Timeout", "");
			else logWriter.write("Google API Connexion granted");
		}
	}
	catch (PFHCancelException &p_e) {}
	catch (PFHException &p_e) { PFHReThrow(""); }
}

When the code go through the grant() line, everything is fine and my access is granted well. But if i go through m_oauth2.refreshAccessToken(); I got this answer :

qt.networkauth.replyhandler: Error transferring https://www.googleapis.com/oauth2/v4/token - server replied: Bad Request

What's wrong with my method ?

[SGaist]

Hi,

Well, something wrong was sent as it seems. You might want to check the query that was sent to Google.

[Higestromm]

Thank you for your reply :)

Do you have an idea of how to check the query as it's fully managed by the QOauth2authorizationcodeFlow class. I tried to add the line

QLoggingCategory::setFilterRules("qt.networkauth.*=true");

But there's no more information logged :/

[SGaist]

You could use something like wire shark to analyze the network traffic and see what is going on.

[orio]

@JeroenDierckx thank you very much , my code works now :

oauth->setModifyParametersFunction([&](QAbstractOAuth::Stage stage, QVariantMap* parameters)
      {
          if (stage == QAbstractOAuth::Stage::RefreshingAccessToken) {
              parameters->insert("client_id" ,oauth->clientIdentifier());
              parameters->insert("client_secret" oauth->clientIdentifierSharedKey());
          }
      });

[Dramcryx]

@orio great. Worked for me as well!