Merge branch 'issue-1669' into calamares

CHANGES

@@ -19,6 +19,11 @@ This release contains contributions from (alphabetically by first name):
  - *networkcfg* now translates the "live user" on an ISO to the regular
    user on the installed system, so that network configuration changes
    made in the live system are automatically used after installation.
+ - *welcome* can now check multiple URLs to determine if internet connectivity
+   is available. It is still recommended to check the distro home-page or
+   some special "ping" page of the distro, although that has some privacy
+   implications; using example.com or google.com may work as well. Listing
+   multiple URLs will ping each of them in turn until one succeeds.
 
 
 # 3.2.41.1 (2021-08-05) #

src/libcalamares/Settings.cpp

@@ -104,6 +104,10 @@ Settings* Settings::s_instance = nullptr;
 Settings*
 Settings::instance()
 {
+    if ( !s_instance )
+    {
+        cWarning() << "Getting nullptr Settings instance.";
+    }
     return s_instance;
 }
 
@@ -238,6 +242,9 @@ Settings::Settings( bool debugMode )
     , m_disableCancel( false )
     , m_disableCancelDuringExec( false )
 {
+    cWarning() << "Using bogus Calamares settings in"
+               << ( debugMode ? QStringLiteral( "debug" ) : QStringLiteral( "regular" ) ) << "mode";
+    s_instance = this;
 }
 
 Settings::Settings( const QString& settingsFilePath, bool debugMode )

src/libcalamares/network/Manager.cpp

@@ -20,6 +20,8 @@
 #include <QThread>
 #include <QTimer>
 
+#include <algorithm>
+
 namespace CalamaresUtils
 {
 namespace Network
@@ -27,7 +29,7 @@ namespace Network
 void
 RequestOptions::applyToRequest( QNetworkRequest* request ) const
 {
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
+#if QT_VERSION < QT_VERSION_CHECK( 5, 15, 0 )
     constexpr const auto RedirectPolicyAttribute = QNetworkRequest::FollowRedirectsAttribute;
 #else
     constexpr const auto RedirectPolicyAttribute = QNetworkRequest::RedirectPolicyAttribute;
@@ -60,8 +62,9 @@ public slots:
     void cleanupNam();
 
 public:
-    QUrl m_hasInternetUrl;
-    bool m_hasInternet;
+    QVector< QUrl > m_hasInternetUrls;
+    bool m_hasInternet = false;
+    int m_lastCheckedUrlIndex = -1;
 
     Private();
 
@@ -155,8 +158,33 @@ Manager::hasInternet()
 bool
 Manager::checkHasInternet()
 {
+    if ( d->m_hasInternetUrls.empty() )
+    {
+        return false;
+    }
+    if ( d->m_lastCheckedUrlIndex < 0 )
+    {
+        d->m_lastCheckedUrlIndex = 0;
+    }
+    int attempts = 0;
+    do
+    {
+        // Start by pinging the same one as last time
+        d->m_hasInternet = synchronousPing( d->m_hasInternetUrls.at( d->m_lastCheckedUrlIndex ) );
+        // if it's not responding, **then** move on to the next one,
+        // and wrap around if needed
+        if ( !d->m_hasInternet )
+        {
+            if ( ++( d->m_lastCheckedUrlIndex ) >= d->m_hasInternetUrls.size() )
+            {
+                d->m_lastCheckedUrlIndex = 0;
+            }
+        }
+        // keep track of how often we've tried, because there's no point in
+        // going around more than once.
+        attempts++;
+    } while ( !d->m_hasInternet && ( attempts < d->m_hasInternetUrls.size() ) );
 
-    d->m_hasInternet = synchronousPing( d->m_hasInternetUrl );
 
 // For earlier Qt versions (< 5.15.0), set the accessibility flag to
 // NotAccessible if synchronous ping has failed, so that any module
@@ -177,7 +205,40 @@ Manager::checkHasInternet()
 void
 Manager::setCheckHasInternetUrl( const QUrl& url )
 {
-    d->m_hasInternetUrl = url;
+    d->m_lastCheckedUrlIndex = -1;
+    d->m_hasInternetUrls.clear();
+    if ( url.isValid() )
+    {
+        d->m_hasInternetUrls.append( url );
+    }
+}
+
+void
+Manager::setCheckHasInternetUrl( const QVector< QUrl >& urls )
+{
+    d->m_lastCheckedUrlIndex = -1;
+    d->m_hasInternetUrls = urls;
+    auto it = std::remove_if(
+        d->m_hasInternetUrls.begin(), d->m_hasInternetUrls.end(), []( const QUrl& u ) { return !u.isValid(); } );
+    if ( it != d->m_hasInternetUrls.end() )
+    {
+        d->m_hasInternetUrls.erase( it, d->m_hasInternetUrls.end() );
+    }
+}
+
+void
+Manager::addCheckHasInternetUrl( const QUrl& url )
+{
+    if ( url.isValid() )
+    {
+        d->m_hasInternetUrls.append( url );
+    }
+}
+
+QVector< QUrl >
+Manager::getCheckInternetUrls() const
+{
+    return d->m_hasInternetUrls;
 }
 
 /** @brief Does a request asynchronously, returns the (pending) reply

src/libcalamares/network/Manager.h

@@ -16,6 +16,7 @@
 #include <QDebug>
 #include <QObject>
 #include <QUrl>
+#include <QVector>
 
 #include <chrono>
 #include <memory>
@@ -89,6 +90,7 @@ class DLLEXPORT Manager : public QObject
 {
     Q_OBJECT
     Q_PROPERTY( bool hasInternet READ hasInternet NOTIFY hasInternetChanged FINAL )
+    Q_PROPERTY( QVector< QUrl > checkInternetUrls READ getCheckInternetUrls WRITE setCheckHasInternetUrl )
 
     Manager();
 
@@ -122,6 +124,15 @@ public:
     /// @brief Set the URL which is used for the general "is there internet" check.
     void setCheckHasInternetUrl( const QUrl& url );
 
+    /// @brief Adds an (extra) URL to check
+    void addCheckHasInternetUrl( const QUrl& url );
+
+    /// @brief Set a collection of URLs used for the general "is there internet" check.
+    void setCheckHasInternetUrl( const QVector< QUrl >& urls );
+
+    /// @brief What URLs are used to check for internet connectivity?
+    QVector< QUrl > getCheckInternetUrls() const;
+
     /** @brief Do a network request asynchronously.
      *
      * Returns a pointer to the reply-from-the-request.

src/libcalamares/network/Tests.cpp

@@ -30,6 +30,7 @@ NetworkTests::testInstance()
 {
     auto& nam = CalamaresUtils::Network::Manager::instance();
     QVERIFY( !nam.hasInternet() );
+    QCOMPARE( nam.getCheckInternetUrls().count(), 0 );
 }
 
 void
@@ -60,3 +61,87 @@ NetworkTests::testPing()
         QVERIFY( canPing_www_kde_org );
     }
 }
+
+void
+NetworkTests::testCheckUrl()
+{
+    using namespace CalamaresUtils::Network;
+    Logger::setupLogLevel( Logger::LOGVERBOSE );
+    auto& nam = Manager::instance();
+
+    {
+        QUrl u( "http://example.com" );
+        QVERIFY( u.isValid() );
+        nam.setCheckHasInternetUrl( u );
+        QVERIFY( nam.checkHasInternet() );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 1 );  // Valid URL
+    }
+    {
+        QUrl u( "http://nonexistent.example.com" );
+        QVERIFY( u.isValid() );
+        nam.setCheckHasInternetUrl( u );
+        QVERIFY( !nam.checkHasInternet() );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 1 );  // Valid URL even if it doesn't resolve
+    }
+    {
+        QUrl u;
+        QVERIFY( !u.isValid() );
+        nam.setCheckHasInternetUrl( u );
+        QVERIFY( !nam.checkHasInternet() );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 0 );  // Invalid URL tried
+    }
+}
+
+void
+NetworkTests::testCheckMultiUrl()
+{
+    using namespace CalamaresUtils::Network;
+    Logger::setupLogLevel( Logger::LOGVERBOSE );
+    auto& nam = Manager::instance();
+
+    {
+        QUrl u0( "http://example.com" );
+        QUrl u1( "https://kde.org" );
+        QVERIFY( u0.isValid() );
+        QVERIFY( u1.isValid() );
+        nam.setCheckHasInternetUrl( { u0, u1 } );
+        QVERIFY( nam.checkHasInternet() );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 2 );
+    }
+    {
+        QUrl u0( "http://nonexistent.example.com" );
+        QUrl u1( "http://bogus.example.com" );
+        QVERIFY( u0.isValid() );
+        QVERIFY( u1.isValid() );
+        nam.setCheckHasInternetUrl( { u0, u1 } );
+        QVERIFY( !nam.checkHasInternet() );
+        QVERIFY( !nam.checkHasInternet() );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 2 );  // Both are valid URLs
+        nam.addCheckHasInternetUrl( QUrl( "http://example.com" ) );
+        QVERIFY( nam.checkHasInternet() );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 3 );
+    }
+    {
+        QUrl u0( "http://nonexistent.example.com" );
+        QUrl u1;
+        QVERIFY( u0.isValid() );
+        QVERIFY( !u1.isValid() );
+        nam.setCheckHasInternetUrl( { u0, u1 } );
+        QVERIFY( !nam.checkHasInternet() );
+        QVERIFY( !nam.checkHasInternet() );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 1 );  // Only valid URL added
+        nam.addCheckHasInternetUrl( QUrl( "http://example.com" ) );
+        QVERIFY( nam.checkHasInternet() );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 2 );
+    }
+    {
+        QUrl u0( "http://nonexistent.example.com" );
+        QUrl u1;
+        QVERIFY( u0.isValid() );
+        QVERIFY( !u1.isValid() );
+        nam.setCheckHasInternetUrl( { u1, u1, u1, u1 } );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 0 );
+        nam.setCheckHasInternetUrl( { u1, u1, u0, u1 } );
+        QCOMPARE( nam.getCheckInternetUrls().count(), 1 );
+    }
+}

src/libcalamares/network/Tests.h

@@ -24,6 +24,9 @@ private Q_SLOTS:
 
     void testInstance();
     void testPing();
+
+    void testCheckUrl();
+    void testCheckMultiUrl();
 };
 
 #endif

src/libcalamares/utils/CalamaresUtilsSystem.cpp

@@ -102,7 +102,7 @@ System::instance()
     if ( !s_instance )
     {
         cError() << "No Calamares system-object has been created.";
-        cError() << Logger::SubEntry << "using a bogus instance instead.";
+        cDebug() << Logger::SubEntry << "using a bogus instance instead.";
         return new System( true, nullptr );
     }
     return s_instance;

src/libcalamares/utils/Variant.h

@@ -34,7 +34,7 @@ DLLEXPORT QString getString( const QVariantMap& map, const QString& key, const Q
 
 /** @brief Get a string list from a mapping with a given key; returns @p d if no value.
  *
- * This is slightly more lenient that getString(), and a single-string value will
+ * This is slightly more lenient than getString(), and a single-string value will
  * be returned as a 1-item list.
  */
 DLLEXPORT QStringList getStringList( const QVariantMap& map, const QString& key, const QStringList& d = QStringList() );

src/libcalamaresui/Branding.cpp

@@ -49,6 +49,10 @@ Branding* Branding::s_instance = nullptr;
 Branding*
 Branding::instance()
 {
+    if ( !s_instance )
+    {
+        cWarning() << "No Branding instance created yet.";
+    }
     return s_instance;
 }
 

src/modules/welcome/CMakeLists.txt

@@ -8,26 +8,22 @@ find_package( Qt5 ${QT_VERSION} CONFIG REQUIRED DBus Network )
 find_package( LIBPARTED )
 if ( LIBPARTED_FOUND )
     set( PARTMAN_SRC checker/partman_devices.c )
-    set( CHECKER_LINK_LIBRARIES ${LIBPARTED_LIBRARY} )
+    set( PARTMAN_LIB ${LIBPARTED_LIBRARY} )
 else()
     set( PARTMAN_SRC )
-    set( CHECKER_LINK_LIBRARIES )
+    set( PARTMAN_LIB )
     add_definitions( -DWITHOUT_LIBPARTED )
 endif()
 
-set( CHECKER_SOURCES
-    checker/CheckerContainer.cpp
-    checker/GeneralRequirements.cpp
-    checker/ResultWidget.cpp
-    checker/ResultsListWidget.cpp
-    ${PARTMAN_SRC}
-)
-
 calamares_add_plugin( welcome
     TYPE viewmodule
     EXPORT_MACRO PLUGINDLLEXPORT_PRO
     SOURCES
-        ${CHECKER_SOURCES}
+        checker/CheckerContainer.cpp
+        checker/GeneralRequirements.cpp
+        checker/ResultWidget.cpp
+        checker/ResultsListWidget.cpp
+        ${PARTMAN_SRC}
         WelcomeViewStep.cpp
         Config.cpp
         Config.h
@@ -37,8 +33,23 @@ calamares_add_plugin( welcome
     RESOURCES
         welcome.qrc
     LINK_PRIVATE_LIBRARIES
-        ${CHECKER_LINK_LIBRARIES}
+        ${PARTMAN_LIB}
         Qt5::DBus
         Qt5::Network
     SHARED_LIB
 )
+
+calamares_add_test(
+    welcometest
+    SOURCES
+        checker/GeneralRequirements.cpp
+        ${PARTMAN_SRC}
+        Config.cpp
+        Tests.cpp
+    LIBRARIES
+        ${PARTMAN_LIB}
+        Qt5::DBus
+        Qt5::Network
+        Qt5::Widgets
+        Calamares::calamaresui
+)

src/modules/welcome/Config.cpp

@@ -27,6 +27,7 @@ Config::Config( QObject* parent )
     : QObject( parent )
     , m_languages( CalamaresUtils::Locale::availableTranslations() )
     , m_filtermodel( std::make_unique< QSortFilterProxyModel >() )
+    , m_requirementsChecker( std::make_unique< GeneralRequirements >( this ) )
 {
     initLanguages();
 
@@ -38,14 +39,16 @@ Config::Config( QObject* parent )
 void
 Config::retranslate()
 {
-    m_genericWelcomeMessage = genericWelcomeMessage().arg( Calamares::Branding::instance()->versionedName() );
+    const auto* branding = Calamares::Branding::instance();
+    const auto* settings = Calamares::Settings::instance();
+    m_genericWelcomeMessage = genericWelcomeMessage().arg( branding ? branding->versionedName() : QString() );
     emit genericWelcomeMessageChanged( m_genericWelcomeMessage );
 
     const auto* r = requirementsModel();
-    if ( !r->satisfiedRequirements() )
+    if ( r && !r->satisfiedRequirements() )
     {
         QString message;
-        const bool setup = Calamares::Settings::instance()->isSetupMode();
+        const bool setup = settings ? settings->isSetupMode() : false;
 
         if ( !r->satisfiedMandatory() )
         {
@@ -70,13 +73,13 @@ Config::retranslate()
                                   "might be disabled." );
         }
 
-        m_warningMessage = message.arg( Calamares::Branding::instance()->shortVersionedName() );
+        m_warningMessage = message.arg( branding ? branding->shortVersionedName() : QString() );
     }
     else
     {
         m_warningMessage = tr( "This program will ask you some questions and "
                                "set up %2 on your computer." )
-                               .arg( Calamares::Branding::instance()->productName() );
+                               .arg( branding ? branding->productName() : QString() );
     }
 
     emit warningMessageChanged( m_warningMessage );
@@ -91,7 +94,8 @@ Config::languagesModel() const
 Calamares::RequirementsModel*
 Config::requirementsModel() const
 {
-    return Calamares::ModuleManager::instance()->requirementsModel();
+    auto* manager = Calamares::ModuleManager::instance();
+    return manager ? manager->requirementsModel() : nullptr;
 }
 
 QAbstractItemModel*
@@ -150,8 +154,6 @@ Config::initLanguages()
     {
         QString name = m_languages->locale( matchedLocaleIndex ).name();
         cDebug() << Logger::SubEntry << "Matched with index" << matchedLocaleIndex << name;
-
-        CalamaresUtils::installTranslator( name, Calamares::Branding::instance()->translationsDirectory() );
         setLocaleIndex( matchedLocaleIndex );
     }
     else
@@ -190,7 +192,8 @@ Config::setLocaleIndex( int index )
     cDebug() << "Index" << index << "Selected locale" << selectedLocale;
 
     QLocale::setDefault( selectedLocale );
-    CalamaresUtils::installTranslator( selectedLocale, Calamares::Branding::instance()->translationsDirectory() );
+    const auto* branding = Calamares::Branding::instance();
+    CalamaresUtils::installTranslator( selectedLocale, branding ? branding->translationsDirectory() : QString() );
     if ( Calamares::JobQueue::instance() && Calamares::JobQueue::instance()->globalStorage() )
     {
         CalamaresUtils::Locale::insertGS( *Calamares::JobQueue::instance()->globalStorage(),
@@ -240,17 +243,19 @@ Config::genericWelcomeMessage() const
 {
     QString message;
 
-    if ( Calamares::Settings::instance()->isSetupMode() )
+    const auto* settings = Calamares::Settings::instance();
+    const auto* branding = Calamares::Branding::instance();
+    const bool welcomeStyle = branding ? branding->welcomeStyleCalamares() : true;
+
+    if ( settings ? settings->isSetupMode() : false )
     {
-        message = Calamares::Branding::instance()->welcomeStyleCalamares()
-            ? tr( "<h1>Welcome to the Calamares setup program for %1</h1>" )
-            : tr( "<h1>Welcome to %1 setup</h1>" );
+        message = welcomeStyle ? tr( "<h1>Welcome to the Calamares setup program for %1</h1>" )
+                               : tr( "<h1>Welcome to %1 setup</h1>" );
     }
     else
     {
-        message = Calamares::Branding::instance()->welcomeStyleCalamares()
-            ? tr( "<h1>Welcome to the Calamares installer for %1</h1>" )
-            : tr( "<h1>Welcome to the %1 installer</h1>" );
+        message = welcomeStyle ? tr( "<h1>Welcome to the Calamares installer for %1</h1>" )
+                               : tr( "<h1>Welcome to the %1 installer</h1>" );
     }
 
     return message;
@@ -393,4 +398,15 @@ Config::setConfigurationMap( const QVariantMap& configurationMap )
 
     ::setLanguageIcon( this, configurationMap );
     ::setGeoIP( this, configurationMap );
+
+    if ( configurationMap.contains( "requirements" )
+         && configurationMap.value( "requirements" ).type() == QVariant::Map )
+    {
+        m_requirementsChecker->setConfigurationMap( configurationMap.value( "requirements" ).toMap() );
+    }
+    else
+    {
+        cWarning() << "no valid requirements map found in welcome "
+                      "module configuration.";
+    }
 }

src/modules/welcome/Config.h

@@ -10,6 +10,8 @@
 #ifndef WELCOME_CONFIG_H
 #define WELCOME_CONFIG_H
 
+#include "checker/GeneralRequirements.h"
+
 #include "locale/LabelModel.h"
 #include "modulesystem/RequirementsModel.h"
 
@@ -100,6 +102,9 @@ public slots:
 
     QAbstractItemModel* unsatisfiedRequirements() const;
 
+    /// @brief Check the general requirements
+    Calamares::RequirementsList checkRequirements() const { return m_requirementsChecker->checkRequirements(); }
+
 signals:
     void countryCodeChanged( QString countryCode );
     void localeIndexChanged( int localeIndex );
@@ -118,6 +123,7 @@ private:
 
     CalamaresUtils::Locale::LabelModel* m_languages = nullptr;
     std::unique_ptr< QSortFilterProxyModel > m_filtermodel;
+    std::unique_ptr< GeneralRequirements > m_requirementsChecker;
 
     QString m_languageIcon;
     QString m_countryCode;

src/modules/welcome/Tests.cpp

@@ -0,0 +1,116 @@
+/* === This file is part of Calamares - <https://calamares.io> ===
+ *
+ *   SPDX-FileCopyrightText: 2021 Adriaan de Groot <groot@kde.org>
+ *   SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *   Calamares is Free Software: see the License-Identifier above.
+ *
+ */
+
+#include "Config.h"
+
+#include "Branding.h"
+#include "Settings.h"
+#include "network/Manager.h"
+#include "utils/CalamaresUtilsSystem.h"
+#include "utils/Logger.h"
+#include "utils/Yaml.h"
+
+#include <QtTest/QtTest>
+
+class WelcomeTests : public QObject
+{
+    Q_OBJECT
+public:
+    WelcomeTests();
+    ~WelcomeTests() override {}
+
+private Q_SLOTS:
+    void initTestCase();
+
+    void testOneUrl();
+    void testUrls_data();
+    void testUrls();
+};
+
+WelcomeTests::WelcomeTests() {}
+
+void
+WelcomeTests::initTestCase()
+{
+    Logger::setupLogLevel( Logger::LOGDEBUG );
+    cDebug() << "Welcome test started.";
+
+    // Ensure we have a system object, expect it to be a "bogus" one
+    CalamaresUtils::System* system = CalamaresUtils::System::instance();
+    QVERIFY( system );
+    cDebug() << Logger::SubEntry << "System @" << Logger::Pointer( system );
+
+    const auto* settings = Calamares::Settings::instance();
+    if ( !settings )
+    {
+        (void)new Calamares::Settings( true );
+    }
+}
+
+void
+WelcomeTests::testOneUrl()
+{
+    Config c;
+
+    // BUILD_AS_TEST is the source-directory path
+    QString filename = QStringLiteral( "1a-checkinternet.conf" );
+    QFile fi( QString( "%1/tests/%2" ).arg( BUILD_AS_TEST, filename ) );
+    QVERIFY( fi.exists() );
+
+    bool ok = false;
+    const auto map = CalamaresUtils::loadYaml( fi, &ok );
+    QVERIFY( ok );
+    QVERIFY( map.count() > 0 );
+    QVERIFY( map.contains( "requirements" ) );
+
+    c.setConfigurationMap( map );
+    QCOMPARE( CalamaresUtils::Network::Manager::instance().getCheckInternetUrls().count(), 1 );
+}
+
+void
+WelcomeTests::testUrls_data()
+{
+    QTest::addColumn< QString >( "filename" );
+    QTest::addColumn< int >( "result" );
+
+    QTest::newRow( "one  " ) << QString( "1a-checkinternet.conf" ) << 1;
+    QTest::newRow( "none " ) << QString( "1b-checkinternet.conf" ) << 0;
+    QTest::newRow( "blank" ) << QString( "1c-checkinternet.conf" ) << 0;
+    QTest::newRow( "bogus" ) << QString( "1d-checkinternet.conf" ) << 0;
+    QTest::newRow( "[]   " ) << QString( "1e-checkinternet.conf" ) << 0;
+    QTest::newRow( "-3   " ) << QString( "1f-checkinternet.conf" ) << 3;
+    QTest::newRow( "[3]  " ) << QString( "1g-checkinternet.conf" ) << 3;
+    QTest::newRow( "some " ) << QString( "1h-checkinternet.conf" ) << 3;
+}
+
+void
+WelcomeTests::testUrls()
+{
+    QFETCH( QString, filename );
+    QFETCH( int, result );
+
+    Config c;
+
+    // BUILD_AS_TEST is the source-directory path
+    QFile fi( QString( "%1/tests/%2" ).arg( BUILD_AS_TEST, filename ) );
+    QVERIFY( fi.exists() );
+
+    bool ok = false;
+    const auto map = CalamaresUtils::loadYaml( fi, &ok );
+    QVERIFY( ok );
+
+    c.setConfigurationMap( map );
+    QCOMPARE( CalamaresUtils::Network::Manager::instance().getCheckInternetUrls().count(), result );
+}
+
+QTEST_GUILESS_MAIN( WelcomeTests )
+
+#include "utils/moc-warnings.h"
+
+#include "Tests.moc"

src/modules/welcome/WelcomeViewStep.cpp

@@ -12,7 +12,6 @@
 
 #include "Config.h"
 #include "WelcomePage.h"
-#include "checker/GeneralRequirements.h"
 
 #include "Branding.h"
 #include "modulesystem/ModuleManager.h"
@@ -25,7 +24,6 @@ WelcomeViewStep::WelcomeViewStep( QObject* parent )
     : Calamares::ViewStep( parent )
     , m_conf( new Config( this ) )
     , m_widget( new WelcomePage( m_conf ) )
-    , m_requirementsChecker( new GeneralRequirements( this ) )
 {
     connect( Calamares::ModuleManager::instance(),
              &Calamares::ModuleManager::requirementsComplete,
@@ -96,17 +94,6 @@ WelcomeViewStep::setConfigurationMap( const QVariantMap& configurationMap )
 {
     m_conf->setConfigurationMap( configurationMap );
 
-    if ( configurationMap.contains( "requirements" )
-         && configurationMap.value( "requirements" ).type() == QVariant::Map )
-    {
-        m_requirementsChecker->setConfigurationMap( configurationMap.value( "requirements" ).toMap() );
-    }
-    else
-    {
-        cWarning() << "no valid requirements map found in welcome "
-                      "module configuration.";
-    }
-
     //here init the qml or qwidgets needed bits
     m_widget->init();
 }
@@ -114,5 +101,5 @@ WelcomeViewStep::setConfigurationMap( const QVariantMap& configurationMap )
 Calamares::RequirementsList
 WelcomeViewStep::checkRequirements()
 {
-    return m_requirementsChecker->checkRequirements();
+    return m_conf->checkRequirements();
 }

src/modules/welcome/WelcomeViewStep.h

@@ -66,7 +66,6 @@ public:
 private:
     Config* m_conf;
     WelcomePage* m_widget;
-    GeneralRequirements* m_requirementsChecker;
 };
 
 CALAMARES_PLUGIN_FACTORY_DECLARATION( WelcomeViewStepFactory )

src/modules/welcome/checker/GeneralRequirements.cpp

@@ -215,6 +215,57 @@ GeneralRequirements::checkRequirements()
     return checkEntries;
 }
 
+/** @brief Loads the check-internel URLs
+ *
+ * There may be zero or one or more URLs specified; returns
+ * @c true if the configuration is incomplete or damaged in some way.
+ */
+static bool
+getCheckInternetUrls( const QVariantMap& configurationMap )
+{
+    const QString exampleUrl = QStringLiteral( "http://example.com" );
+
+    bool incomplete = false;
+    QStringList checkInternetSetting = CalamaresUtils::getStringList( configurationMap, "internetCheckUrl" );
+    if ( !checkInternetSetting.isEmpty() )
+    {
+        QVector< QUrl > urls;
+        for ( const auto& urlString : qAsConst( checkInternetSetting ) )
+        {
+            QUrl url( urlString.trimmed() );
+            if ( url.isValid() )
+            {
+                urls.append( url );
+            }
+            else
+            {
+                cWarning() << "GeneralRequirements entry 'internetCheckUrl' in welcome.conf contains invalid"
+                           << urlString;
+            }
+        }
+
+        if ( urls.empty() )
+        {
+            cWarning() << "GeneralRequirements entry 'internetCheckUrl' contains no valid URLs,"
+                       << "reverting to default (http://example.com).";
+            CalamaresUtils::Network::Manager::instance().setCheckHasInternetUrl( QUrl( exampleUrl ) );
+            incomplete = true;
+        }
+        else
+        {
+            CalamaresUtils::Network::Manager::instance().setCheckHasInternetUrl( urls );
+        }
+    }
+    else
+    {
+        cWarning() << "GeneralRequirements entry 'internetCheckUrl' is undefined in welcome.conf,"
+                      "reverting to default (http://example.com).";
+        CalamaresUtils::Network::Manager::instance().setCheckHasInternetUrl( QUrl( exampleUrl ) );
+        incomplete = true;
+    }
+    return incomplete;
+}
+
 
 void
 GeneralRequirements::setConfigurationMap( const QVariantMap& configurationMap )
@@ -302,30 +353,7 @@ GeneralRequirements::setConfigurationMap( const QVariantMap& configurationMap )
         incompleteConfiguration = true;
     }
 
-    QUrl checkInternetUrl;
-    QString checkInternetSetting = CalamaresUtils::getString( configurationMap, "internetCheckUrl" );
-    if ( !checkInternetSetting.isEmpty() )
-    {
-        checkInternetUrl = QUrl( checkInternetSetting.trimmed() );
-        if ( !checkInternetUrl.isValid() )
-        {
-            cWarning() << "GeneralRequirements entry 'internetCheckUrl' is invalid in welcome.conf"
-                       << checkInternetSetting << "reverting to default (http://example.com).";
-            checkInternetUrl = QUrl( "http://example.com" );
-            incompleteConfiguration = true;
-        }
-    }
-    else
-    {
-        cWarning() << "GeneralRequirements entry 'internetCheckUrl' is undefined in welcome.conf,"
-                      "reverting to default (http://example.com).";
-        checkInternetUrl = "http://example.com";
-        incompleteConfiguration = true;
-    }
-    if ( checkInternetUrl.isValid() )
-    {
-        CalamaresUtils::Network::Manager::instance().setCheckHasInternetUrl( checkInternetUrl );
-    }
+    incompleteConfiguration |= getCheckInternetUrls( configurationMap );
 
     if ( incompleteConfiguration )
     {

src/modules/welcome/tests/1a-checkinternet.conf

@@ -0,0 +1,3 @@
+---
+requirements:
+    internetCheckUrl:   http://example.com

src/modules/welcome/tests/1b-checkinternet.conf

@@ -0,0 +1,3 @@
+# Nothing at all
+---
+bogus:   1

src/modules/welcome/tests/1c-checkinternet.conf

@@ -0,0 +1,4 @@
+# Set to blank
+---
+requirements:
+    internetCheckUrl:   ""

src/modules/welcome/tests/1d-checkinternet.conf

@@ -0,0 +1,4 @@
+# Set to something broken
+---
+requirements:
+    internetCheckUrl:   false

src/modules/welcome/tests/1e-checkinternet.conf

@@ -0,0 +1,4 @@
+# Empty list
+---
+requirements:
+    internetCheckUrl:   []

src/modules/welcome/tests/1f-checkinternet.conf

@@ -0,0 +1,6 @@
+---
+requirements:
+    internetCheckUrl:   
+        - http://example.com
+        - http://bogus.example.com
+        - http://nonexistent.example.com

src/modules/welcome/tests/1g-checkinternet.conf

@@ -0,0 +1,3 @@
+---
+requirements:
+    internetCheckUrl: [ http://example.com, http://bogus.example.com, http://nonexistent.example.com ]

src/modules/welcome/tests/1h-checkinternet.conf

@@ -0,0 +1,8 @@
+# "0" is a valid URL (?) but "" is not
+---
+requirements:
+    internetCheckUrl:   
+        - http://example.com
+        - 0
+        - ""
+        - http://nonexistent.example.com

src/modules/welcome/welcome.conf

@@ -43,6 +43,21 @@ requirements:
     #
     # The URL is only used if "internet" is in the *check* list below.
     internetCheckUrl:   http://example.com
+    #
+    # This may be a single URL, or a list or URLs, in which case the
+    # URLs will be checked one-by-one; if any of them returns data,
+    # internet is assumed to be OK. This can be used to check via
+    # a number of places, where some domains may be down or blocked.
+    #
+    # To use a list of URLs, just use YAML list syntax (e.g.
+    #
+    # internetCheckUrl:
+    #     - http://www.kde.org
+    #     - http://www.freebsd.org
+    #
+    # or short-form
+    #
+    # internetCheckUrl: [ http://www.kde.org, http://www.freebsd.org ]
 
     # List conditions to check. Each listed condition will be
     # probed in some way, and yields true or false according to

src/modules/welcomeq/WelcomeQmlViewStep.cpp

@@ -26,7 +26,6 @@ CALAMARES_PLUGIN_FACTORY_DEFINITION( WelcomeQmlViewStepFactory, registerPlugin<
 WelcomeQmlViewStep::WelcomeQmlViewStep( QObject* parent )
     : Calamares::QmlViewStep( parent )
     , m_config( new Config( this ) )
-    , m_requirementsChecker( new GeneralRequirements( this ) )
 {
     connect( Calamares::ModuleManager::instance(),
              &Calamares::ModuleManager::requirementsComplete,
@@ -58,7 +57,6 @@ WelcomeQmlViewStep::isBackEnabled() const
 bool
 WelcomeQmlViewStep::isAtBeginning() const
 {
-    // TODO: adjust to "pages" in the QML
     return true;
 }
 
@@ -66,7 +64,6 @@ WelcomeQmlViewStep::isAtBeginning() const
 bool
 WelcomeQmlViewStep::isAtEnd() const
 {
-    // TODO: adjust to "pages" in the QML
     return true;
 }
 
@@ -81,26 +78,13 @@ void
 WelcomeQmlViewStep::setConfigurationMap( const QVariantMap& configurationMap )
 {
     m_config->setConfigurationMap( configurationMap );
-
-    if ( configurationMap.contains( "requirements" )
-         && configurationMap.value( "requirements" ).type() == QVariant::Map )
-    {
-        m_requirementsChecker->setConfigurationMap( configurationMap.value( "requirements" ).toMap() );
-    }
-    else
-    {
-        cWarning() << "no valid requirements map found in welcomeq "
-                      "module configuration.";
-    }
-
     Calamares::QmlViewStep::setConfigurationMap( configurationMap );  // call parent implementation last
-    setContextProperty( "Welcome", m_config );
 }
 
 Calamares::RequirementsList
 WelcomeQmlViewStep::checkRequirements()
 {
-    return m_requirementsChecker->checkRequirements();
+    return m_config->checkRequirements();
 }
 
 QObject*

src/modules/welcomeq/WelcomeQmlViewStep.h

@@ -29,9 +29,7 @@ class Handler;
 }
 }  // namespace CalamaresUtils
 
-class GeneralRequirements;
 
-// TODO: Needs a generic Calamares::QmlViewStep as base class
 // TODO: refactor and move what makes sense to base class
 class PLUGINDLLEXPORT WelcomeQmlViewStep : public Calamares::QmlViewStep
 {
@@ -65,7 +63,6 @@ public:
 
 private:
     Config* m_config;
-    GeneralRequirements* m_requirementsChecker;
 };
 
 CALAMARES_PLUGIN_FACTORY_DECLARATION( WelcomeQmlViewStepFactory )