[welcome] Switch to the network service

- simplify configuration
 - use existing ping- and hasInternet()

src/modules/welcome/checker/GeneralRequirements.cpp

@@ -25,12 +25,14 @@
 #include "partman_devices.h"
 
 #include "modulesystem/Requirement.h"
+#include "network/Manager.h"
 #include "widgets/WaitingWidget.h"
 #include "utils/CalamaresUtilsGui.h"
 #include "utils/Logger.h"
 #include "utils/Retranslator.h"
 #include "utils/CalamaresUtilsSystem.h"
 #include "utils/Units.h"
+#include "utils/Variant.h"
 #include "Settings.h"
 
 #include "JobQueue.h"
@@ -245,16 +247,16 @@ GeneralRequirements::setConfigurationMap( const QVariantMap& configurationMap )
         incompleteConfiguration = true;
     }
 
-    if ( configurationMap.contains( "internetCheckUrl" ) &&
-         configurationMap.value( "internetCheckUrl" ).type() == QVariant::String )
+    QUrl checkInternetUrl;
+    QString checkInternetSetting = CalamaresUtils::getString( configurationMap, "internetCheckUrl" );
+    if ( !checkInternetSetting.isEmpty() )
     {
-        m_checkHasInternetUrl = configurationMap.value( "internetCheckUrl" ).toString().trimmed();
-        if ( m_checkHasInternetUrl.isEmpty() ||
-             !QUrl( m_checkHasInternetUrl ).isValid() )
+        checkInternetUrl = QUrl( checkInternetSetting.trimmed() );
+        if ( !checkInternetUrl.isValid() )
         {
-            cWarning() << "GeneralRequirements entry 'internetCheckUrl' is invalid in welcome.conf" << m_checkHasInternetUrl
+            cWarning() << "GeneralRequirements entry 'internetCheckUrl' is invalid in welcome.conf" << checkInternetSetting
                      << "reverting to default (http://example.com).";
-            m_checkHasInternetUrl = "http://example.com";
+            checkInternetUrl = QUrl( "http://example.com" );
             incompleteConfiguration = true;
         }
     }
@@ -262,10 +264,13 @@ GeneralRequirements::setConfigurationMap( const QVariantMap& configurationMap )
     {
         cWarning() << "GeneralRequirements entry 'internetCheckUrl' is undefined in welcome.conf,"
                     "reverting to default (http://example.com).";
-
-        m_checkHasInternetUrl = "http://example.com";
+        checkInternetUrl = "http://example.com";
         incompleteConfiguration = true;
     }
+    if ( checkInternetUrl.isValid() )
+    {
+        CalamaresUtils::Network::Manager::instance().setCheckHasInternetUrl( checkInternetUrl );
+    }
 
     if ( incompleteConfiguration )
     {
@@ -357,22 +362,8 @@ GeneralRequirements::checkHasPower()
 bool
 GeneralRequirements::checkHasInternet()
 {
-    // default to true in the QNetworkAccessManager::UnknownAccessibility case
-    QNetworkAccessManager qnam;
-    bool hasInternet = qnam.networkAccessible() == QNetworkAccessManager::Accessible;
-
-    if ( !hasInternet && qnam.networkAccessible() == QNetworkAccessManager::UnknownAccessibility )
-    {
-        QNetworkRequest req = QNetworkRequest( QUrl( m_checkHasInternetUrl ) );
-        QNetworkReply* reply = qnam.get( req );
-        QEventLoop loop;
-        connect( reply, &QNetworkReply::finished,
-                 &loop, &QEventLoop::quit );
-        loop.exec();
-        if( reply->bytesAvailable() )
-            hasInternet = true;
-    }
-
+    auto& nam = CalamaresUtils::Network::Manager::instance();
+    bool hasInternet = nam.checkHasInternet();
     Calamares::JobQueue::instance()->globalStorage()->insert( "hasInternet", hasInternet );
     return hasInternet;
 }

src/modules/welcome/checker/GeneralRequirements.h

@@ -48,7 +48,6 @@ private:
 
     qreal m_requiredStorageGiB;
     qreal m_requiredRamGiB;
-    QString m_checkHasInternetUrl;
 };
 
 #endif // REQUIREMENTSCHECKER_H