[welcome] Support GeoIP country lookup

src/modules/welcome/WelcomeViewStep.cpp

@@ -22,10 +22,12 @@
 #include "WelcomePage.h"
 #include "checker/GeneralRequirements.h"
 
+#include "geoip/Handler.h"
 #include "modulesystem/ModuleManager.h"
 #include "utils/Logger.h"
 #include "utils/Variant.h"
 
+#include <QFutureWatcher>
 #include <QVariant>
 
 CALAMARES_PLUGIN_FACTORY_DEFINITION( WelcomeViewStepFactory, registerPlugin<WelcomeViewStep>(); )
@@ -112,6 +114,26 @@ WelcomeViewStep::setConfigurationMap( const QVariantMap& configurationMap )
     else
         cWarning() << "no valid requirements map found in welcome "
                     "module configuration.";
+
+    bool ok = false;
+    QVariantMap geoip = CalamaresUtils::getSubMap( configurationMap, "geoip", ok );
+    if ( ok )
+    {
+        using FWString = QFutureWatcher< QString >;
+
+        auto* handler = new CalamaresUtils::GeoIP::Handler(
+            CalamaresUtils::getString( geoip, "style" ),
+            CalamaresUtils::getString( geoip, "url" ),
+            CalamaresUtils::getString( geoip, "selector" ) );
+        auto* future = new FWString();
+        connect( future, &FWString::finished, [f=future, h=handler]()
+        {
+            cDebug() << "GeoIP result for welcome=" << f->future().result();
+            f->deleteLater();
+            delete h;
+        } );
+        future->setFuture( handler->queryRaw() );
+    }
 }
 
 Calamares::RequirementsList WelcomeViewStep::checkRequirements()

src/modules/welcome/welcome.conf

@@ -47,3 +47,16 @@ requirements:
         # - storage
         - ram
         # - root
+
+# GeoIP checking
+#
+# This can be used to pre-select a language based on the country
+# the user is currently in. It *assumes* that there's internet
+# connectivity, though. Configuration is like in the locale module,
+# but remember to use a URL that returns full data **and** to
+# use a selector that will pick the country, not the timezone.
+
+geoip:
+    style:  "xml"
+    url:    "https://geoip.kde.org/v1/ubiquity"  # extended XML format
+    selector: "CountryCode"  # blank uses default, which is wrong