Fix tst_QNetworkReply::httpWithNoCredentialUsage autotest

The test was testing the wrong thing, and passing even though
QNetworkRequest::AuthenticationReuseAttribute was not being
respected, until recently when I fixed username/password in URLs

Now the cache is properly bypassed when this attribute is set to
manual, and the autotest is updated to check this.

Change-Id: I87943515562d0b16b03504f0758ba265758d1c22
Reviewed-by: Martin Petersson <Martin.Petersson@nokia.com>

src/network/access/qnetworkaccessmanager.cpp

@@ -1089,15 +1089,16 @@ void QNetworkAccessManagerPrivate::authenticationRequired(QAuthenticator *authen
                                                           QNetworkReply *reply,
                                                           bool synchronous,
                                                           QUrl &url,
-                                                          QUrl *urlForLastAuthentication)
+                                                          QUrl *urlForLastAuthentication,
+                                                          bool allowAuthenticationReuse)
 {
     Q_Q(QNetworkAccessManager);
 
     // don't try the cache for the same URL twice in a row
     // being called twice for the same URL means the authentication failed
     // also called when last URL is empty, e.g. on first call
-    if (urlForLastAuthentication->isEmpty()
+    if (allowAuthenticationReuse && (urlForLastAuthentication->isEmpty()
-            || url != *urlForLastAuthentication) {
+            || url != *urlForLastAuthentication)) {
         // if credentials are included in the url, then use them
         if (!url.userName().isEmpty()
             && !url.password().isEmpty()) {
@@ -1124,6 +1125,7 @@ void QNetworkAccessManagerPrivate::authenticationRequired(QAuthenticator *authen
 
     *urlForLastAuthentication = url;
     emit q->authenticationRequired(reply, authenticator);
+    if (allowAuthenticationReuse)
         authenticationManager->cacheCredentials(url, authenticator);
 }
 

src/network/access/qnetworkaccessmanager_p.h

@@ -98,7 +98,8 @@ public:
                                 QNetworkReply *reply,
                                 bool synchronous,
                                 QUrl &url,
-                                QUrl *urlForLastAuthentication);
+                                QUrl *urlForLastAuthentication,
+                                bool allowAuthenticationReuse = true);
     void cacheCredentials(const QUrl &url, const QAuthenticator *auth);
     QNetworkAuthenticationCredential *fetchCachedCredentials(const QUrl &url,
                                                              const QAuthenticator *auth = 0);

src/network/access/qnetworkreplyhttpimpl.cpp

@@ -1179,10 +1179,10 @@ void QNetworkReplyHttpImplPrivate::replyDownloadProgressSlot(qint64 bytesReceive
     emit q->downloadProgress(bytesDownloaded, bytesTotal);
 }
 
-void QNetworkReplyHttpImplPrivate::httpAuthenticationRequired(const QHttpNetworkRequest &,
+void QNetworkReplyHttpImplPrivate::httpAuthenticationRequired(const QHttpNetworkRequest &request,
                                                            QAuthenticator *auth)
 {
-    managerPrivate->authenticationRequired(auth, q_func(), synchronous, url, &urlForLastAuthentication);
+    managerPrivate->authenticationRequired(auth, q_func(), synchronous, url, &urlForLastAuthentication, request.withCredentials());
 }
 
 #ifndef QT_NO_NETWORKPROXY

tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp

@@ -6335,17 +6335,39 @@ void tst_QNetworkReply::qtbug13431replyThrottling()
 
 void tst_QNetworkReply::httpWithNoCredentialUsage()
 {
-    QNetworkRequest request(QUrl("http://httptest:httptest@" + QtNetworkSettings::serverName() + "/qtest/protected/cgi-bin/md5sum.cgi"));
-    // Do not use credentials
-    request.setAttribute(QNetworkRequest::AuthenticationReuseAttribute, QNetworkRequest::Manual);
     QNetworkAccessManager manager;
-    QNetworkReplyPtr reply = manager.get(request);
 
-    qRegisterMetaType<QNetworkReply*>("QNetworkReply*");
-    qRegisterMetaType<QAuthenticator*>("QAuthenticator*");
     QSignalSpy authSpy(&manager, SIGNAL(authenticationRequired(QNetworkReply*,QAuthenticator*)));
     QSignalSpy finishedSpy(&manager, SIGNAL(finished(QNetworkReply*)));
-    qRegisterMetaType<QNetworkReply::NetworkError>("QNetworkReply::NetworkError");
+
+    // Get with credentials, to preload authentication cache
+    {
+        QNetworkRequest request(QUrl("http://httptest:httptest@" + QtNetworkSettings::serverName() + "/qtest/protected/cgi-bin/md5sum.cgi"));
+        QNetworkReplyPtr reply = manager.get(request);
+        QVERIFY(waitForFinish(reply) == Success);
+        // credentials in URL, so don't expect authentication signal
+        QCOMPARE(authSpy.count(), 0);
+        QCOMPARE(finishedSpy.count(), 1);
+        finishedSpy.clear();
+    }
+
+    // Get with cached credentials (normal usage)
+    {
+        QNetworkRequest request(QUrl("http://" + QtNetworkSettings::serverName() + "/qtest/protected/cgi-bin/md5sum.cgi"));
+        QNetworkReplyPtr reply = manager.get(request);
+        QVERIFY(waitForFinish(reply) == Success);
+        // credentials in cache, so don't expect authentication signal
+        QCOMPARE(authSpy.count(), 0);
+        QCOMPARE(finishedSpy.count(), 1);
+        finishedSpy.clear();
+    }
+
+    // Do not use cached credentials (webkit cross origin usage)
+    {
+        QNetworkRequest request(QUrl("http://" + QtNetworkSettings::serverName() + "/qtest/protected/cgi-bin/md5sum.cgi"));
+        request.setAttribute(QNetworkRequest::AuthenticationReuseAttribute, QNetworkRequest::Manual);
+        QNetworkReplyPtr reply = manager.get(request);
+
         QSignalSpy errorSpy(reply, SIGNAL(error(QNetworkReply::NetworkError)));
 
         connect(reply, SIGNAL(finished()), &QTestEventLoop::instance(), SLOT(exitLoop()), Qt::QueuedConnection);
@@ -6358,6 +6380,7 @@ void tst_QNetworkReply::httpWithNoCredentialUsage()
         QCOMPARE(errorSpy.count(), 1);
 
         QCOMPARE(reply->error(), QNetworkReply::AuthenticationRequiredError);
+    }
 }
 
 void tst_QNetworkReply::qtbug15311doubleContentLength()