Qt app using oAuth2.0 for authentification

[SteveQt]

Hi,

I have to create an application in which the user will provide a username and a password to connect to a web server and I have to do it with oAuth2.0.
So I created the following (by looking at Facebook and Twitter demo provided with oAuth).

const char CLIENT_ID[] = "...";
const char CLIENT_SECRET[] = "...";
const char REQUEST_URL[] = "...";
const char TOKEN_URL[] = "...";
 
oAuthClass::oAuthClass(QObject *parent) :
    QObject(parent)
{
    O2* o2Auth = new O2(this);
 
    o2Auth->setClientId(CLIENT_ID);
    o2Auth->setClientSecret(CLIENT_SECRET);
    o2Auth->setRequestUrl(REQUEST_URL);
    o2Auth->setTokenUrl(TOKEN_URL);
 
    // Create a store object for writing the received tokens
    O2SettingsStore *store = new O2SettingsStore(O2_ENCRYPTION_KEY);
    store->setGroupKey("oAuth");
    o2Auth->setStore(store);
}

const char CLIENT_ID[] = "...";
const char CLIENT_SECRET[] = "...";
const char REQUEST_URL[] = "...";
const char TOKEN_URL[] = "...";

oAuthClass::oAuthClass(QObject *parent) :
    QObject(parent)
{
    O2* o2Auth = new O2(this);

    o2Auth->setClientId(CLIENT_ID);
    o2Auth->setClientSecret(CLIENT_SECRET);
    o2Auth->setRequestUrl(REQUEST_URL);
    o2Auth->setTokenUrl(TOKEN_URL);

    // Create a store object for writing the received tokens
    O2SettingsStore *store = new O2SettingsStore(O2_ENCRYPTION_KEY);
    store->setGroupKey("oAuth");
    o2Auth->setStore(store);
}

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And I am completely stuck there , I don't know what to do .
I think that I have to use the O2Requestor class which permits to create post request. Something like :

QNetworkAccessManager *manager;
O2Requestor* o2Requestor = new O2Requestor(manager,o2Auth);
 
QNetworkRequest* request = new QNetworkRequest(...);
/* I have the informations for the header
{ { "Authorization", "Basic <CLIENT_ID:CLIENT_SECRET>" },
{ "ContentType", "x-www-form-urlencoded" },
{ "grant_type", "password" },
{ "username", "<username>" },
{ "password", "<userpassword>" } } 
 
so I can create a post request.
*/
 
o2Requestor->post(request, ...);

QNetworkAccessManager *manager;
O2Requestor* o2Requestor = new O2Requestor(manager,o2Auth);

QNetworkRequest* request = new QNetworkRequest(...);
/* I have the informations for the header
{ { "Authorization", "Basic <CLIENT_ID:CLIENT_SECRET>" },
{ "ContentType", "x-www-form-urlencoded" },
{ "grant_type", "password" },
{ "username", "<username>" },
{ "password", "<userpassword>" } } 

so I can create a post request.
*/

o2Requestor->post(request, ...);

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So are those steps good or am I wrond?
In addition, there is a lot of signals / slots in O2 class. I think I have to use them if I want to know if the connection is ok, if the token must be refreshed, ...
(If you knwon a good tutorial about how to use oAuth2.0 in Qt C++, I would appreciate a lot )
Thanks.

[jefftee]

I haven't used this personally, but found this very quickly via google search for "qt oauth2":

https://github.com/cybercatalyst/qtoauth2

Might be worth looking at.

[pablodiazgutierrez]

Things have changed quite a bit since you first asked. Now there's QNetworkAuthorization that makes it easier to authenticate Qt with Google SSO in C++. There are still a lot of caveats specific to Google, which is interesting because they announced they're about to block SSO from embedded web views, and everyone is scrambling to find a fix.