Albrecht Dreß wrote:
> Just a dumb question - wouldn't it be sufficient to just add the user
> name and password to the call of
>
>
> QNetworkProxy::setApplicationProxy(QNetworkProxy(QNetworkProxy::HttpProxy,m_httpProxy,m_httpProxyPort));
>
>
> in CResources::CResources()?
After struggling with QT's proxy support (and reading the Getting
Started to QT Programming doc), I eventually found out that it's not
that straightforward.
In my scenario, it is pointless to pass username and password to the
QNetworkProxy constructor, as I pointed out in a previous message.
Instead, in every class using proxy, I had to add a connection between
the proxyAuthenticationRequired() signal and a slot that manages proxy
authentication--something like this:
> connect(&networkAccessManager, SIGNAL(proxyAuthenticationRequired(const
> QNetworkProxy&, QAuthenticator*)),
> this, SLOT(slotProxyAuthenticationRequired(const QNetworkProxy&,
> QAuthenticator*)));
The slot then picks up authentication data from my Windows registry, and
passes them to the QAuthenticator object:
> void CSearchDB::slotProxyAuthenticationRequired(const QNetworkProxy &prox,
> QAuthenticator *auth)
> {
> QString user;
> QString pwd;
>
> CResources::self().getHttpProxyAuth(user,pwd);
>
> auth->setUser(user);
> auth->setPassword(pwd);
> }
Here you can find a simple example of this technique:
http://qt-project.org/forums/viewthread/20539/#98842
I found the proxy is set up in 11 classes. These are the source files
that I tweaked:
> Search "setProxy" (12 hits in 11 files)
> C:\usr\qlandkartegt-1.5.1\src\CCreateMapWMS.cpp (1 hits)
> Line 72: server->setProxy(url,port);
> C:\usr\qlandkartegt-1.5.1\src\CDlgMapWmsConfig.cpp (1 hits)
> Line 147:
> accessManager->setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy));
> C:\usr\qlandkartegt-1.5.1\src\CMapTms.cpp (1 hits)
> Line 87:
> accessManager->setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy));
> C:\usr\qlandkartegt-1.5.1\src\CMapWms.cpp (1 hits)
> Line 158:
> accessManager->setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy));
> C:\usr\qlandkartegt-1.5.1\src\COsmTilesHash.cpp (1 hits)
> Line 52:
> m_networkAccessManager->setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy));
>
> C:\usr\qlandkartegt-1.5.1\src\CRouteToolWidget.cpp (2 hits)
> Line 64:
> m_networkAccessManager->setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy,url,port));
>
> Line 171:
> m_networkAccessManager->setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy));
>
> C:\usr\qlandkartegt-1.5.1\src\CSearchDB.cpp (1 hits)
> Line 44:
> networkAccessManager.setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy));
> C:\usr\qlandkartegt-1.5.1\src\CTrack.cpp (1 hits)
> Line 630:
> geonames->setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy));
Hopefully I didn't miss any.
Albrecht Dreß wrote:
> Adding two more config elements and optionally tweaking
> CResources::getHttpProxy() to pick up the authentication tokens from the
> environment (although the latter is not a good idea from the security
> pov) should then be trivial...
At the moment, I manually added two keys for my proxy username and
password to Windows registry. I understand your point on security, but I
am currently unaware of what other options might be explored.
Rather than changing the signature of CResources::getHttpProxy(), in the
end I added another method to get the authentication tokens:
> void CResources::getHttpProxyAuth(QString& user, QString& pwd)
> {
> // Proxy authentication support
> user = m_httpProxyUser;
> pwd = m_httpProxyPwd;
> }
I tested it and everything seems to work just fine! OpenStreet/CycleMaps
are displayed, and both Google and OpenRouteService search do work as well.
Please let me know whether I could perform some other test.
The only thing missing is setting up proxy authentication data from the
GUI--and not by manually editing the registry. I'm not a C++ / GT
programmer, so it'll presumably take me some time.
I would share the changes I made to the code. I know there's a diff tool
that would be helpful, but I have to refresh my memory on how to take
advantage of it.
Any further suggestion is welcomed!
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