How to set QNetworkCookieJar in QWebEngine? - c++

Question

In QWebView it was possible to set a QNetworkCookieJar via QNetworkAccessManager.
QNetworkAccessManager *nam = new QNetworkAccessManager();
nam->setCookieJar(cookieJar);
webView->page()->setNetworkAccessManager(nam);
This was working like a charm.
How can I set a QNetworkCookieJar in new QWebEngine class introduced in Qt5.4?

Answer 1

I found a solution, to share Cookies with QWebEngine and QNetworkAccesManager by using QWebEngineCookieStore. Subclass QNetworkCookieJar:
class CookieWebEngine : public QNetworkCookieJar
{
.....
protected:
// Reimplement this functions to work with your _cookies list;
bool insertCookie(const QNetworkCookie &cookie);
bool deleteCookie(const QNetworkCookie &cookie);
bool updateCookie(const QNetworkCookie &cookie);
bool validateCookie(const QNetworkCookie &cookie, const QUrl &url) const;
private:
// Save Chromium Cookies
QWebEngineCookieStore *_store;
// Save available cookies
QList<QNetworkCookie> _cookies;
}
Now, lets implement a function to load/save cookies in a file:
// Load Chromium Cookies
void CookieWebEngine::loadStore() {
// Save cookies profile shared
QWebEngineProfile::defaultProfile()->setPersistentCookiesPolicy(QWebEngineProfile::ForcePersistentCookies);
_store = WebEngineProfile::defaultProfile()->cookieStore();
connect(_store, &QWebEngineCookieStore::cookieAdded, this, &CookieWebEngine::handleCookieAdded);
_store->loadAllCookies();
}
// Load/Save cookies in arraylist in a file
void CookieWebEngine::load() {
// load cookies and exceptions
qRegisterMetaTypeStreamOperators<QList<QNetworkCookie> >("QList<QNetworkCookie>");
const QString location = cookiesDirectory() + COOKIES_FILE;
QSettings cookieSettings(location, QSettings::IniFormat);
_cookies = qvariant_cast<QList<QNetworkCookie> >(cookieSettings.value(QLatin1String("cookies")));
setAllCookies(_cookies);
// Now user iterate and add it to chromium
for (auto cookie : _cookies) {
_store->setCookie(cookie);
}
cookieSettings.sync();
}
void CookieWebEngine::save()
{
QString directory = cookiesDirectory();
if (!QFile::exists(directory)) {
QDir dir;
dir.mkpath(directory);
}
const QString location = directory + COOKIES_FILE;
QSettings cookieSettings(location, QSettings::IniFormat);
cookieSettings.setValue(QLatin1String("cookies"), QVariant::fromValue<QList<QNetworkCookie>>(_cookies));
cookieSettings.sync();
}
Now, just connect and handle cookies loaded from the webview:
void CookieWebEngine::handleCookieAdded(const QNetworkCookie &cookie)
{
if (insertCookie(cookie)) {
qDebug() << "Handle cookie " << cookie;
}
}
Its working well for me. Now, i use chromium to sign in. After, i save my session cookie in the customized cookiejar and I use it in my customized QNetworkAccesManager.