QNetworkInformation: Captive portal support for Android

Task-number: QTBUG-93848
Change-Id: Ia74ed0a756dc2bf71c7172e21ac4ff2361150b32
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

src/plugins/networkinformationbackends/android/jar/src/org/qtproject/qt/android/networkinformation/QtAndroidNetworkInformation.java

@@ -53,6 +53,7 @@ public class QtAndroidNetworkInformation {
     private static final String LOG_TAG = "QtAndroidNetworkInformation";
 
     private static native void connectivityChanged();
+    private static native void behindCaptivePortalChanged(boolean state);
 
     private static QtNetworkInformationCallback m_callback = null;
     private static final Object m_lock = new Object();
@@ -77,6 +78,10 @@ public class QtAndroidNetworkInformation {
             else
                 s = AndroidConnectivity.Unknown; // = we _may_ have Internet access
             setState(s);
+
+            final boolean captive
+                    = capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL);
+            behindCaptivePortalChanged(captive);
         }
 
         private void setState(AndroidConnectivity s) {

src/plugins/networkinformationbackends/android/qandroidnetworkinformationbackend.cpp

@@ -64,7 +64,8 @@ public:
 
     static QNetworkInformation::Features featuresSupportedStatic()
     {
-        return QNetworkInformation::Features(QNetworkInformation::Feature::Reachability);
+        using Feature = QNetworkInformation::Feature;
+        return QNetworkInformation::Features(Feature::Reachability | Feature::CaptivePortal);
     }
 
     bool isValid() { return m_valid; }
@@ -125,6 +126,12 @@ QAndroidNetworkInformationBackend::QAndroidNetworkInformationBackend()
 
         setReachability(mapState(conman->networkConnectivity()));
     });
+
+    connect(conman, &AndroidConnectivityManager::captivePortalChanged, this,
+            [this](bool state) {
+                using TriState = QNetworkInformation::TriState;
+                setBehindCaptivePortal(state ? TriState::True : TriState::False);
+            });
 }
 
 QT_END_NAMESPACE

src/plugins/networkinformationbackends/android/wrapper/androidconnectivitymanager.cpp

@@ -56,11 +56,20 @@ Q_GLOBAL_STATIC(AndroidConnectivityManagerInstance, androidConnManagerInstance)
 static const char networkInformationClass[] =
         "org/qtproject/qt/android/networkinformation/QtAndroidNetworkInformation";
 
-static void networkConnectivityChanged()
+static void networkConnectivityChanged(JNIEnv *env, jobject obj)
 {
+    Q_UNUSED(env);
+    Q_UNUSED(obj);
     Q_EMIT androidConnManagerInstance->connManager->connectivityChanged();
 }
 
+static void behindCaptivePortalChanged(JNIEnv *env, jobject obj, jboolean state)
+{
+    Q_UNUSED(env);
+    Q_UNUSED(obj);
+    Q_EMIT androidConnManagerInstance->connManager->captivePortalChanged(state);
+}
+
 AndroidConnectivityManager::AndroidConnectivityManager()
 {
     if (!registerNatives())
@@ -124,9 +133,12 @@ bool AndroidConnectivityManager::registerNatives()
         return false;
 
     jclass clazz = env->GetObjectClass(networkReceiver.object());
-    static JNINativeMethod method = { "connectivityChanged", "()V",
-                                      reinterpret_cast<void *>(networkConnectivityChanged) };
-    const bool ret = (env->RegisterNatives(clazz, &method, 1) == JNI_OK);
+    static JNINativeMethod methods[] = {
+        { "connectivityChanged", "()V", reinterpret_cast<void *>(networkConnectivityChanged) },
+        { "behindCaptivePortalChanged", "(Z)V",
+          reinterpret_cast<void *>(behindCaptivePortalChanged) }
+    };
+    const bool ret = (env->RegisterNatives(clazz, methods, std::size(methods)) == JNI_OK);
     env->DeleteLocalRef(clazz);
     return ret;
 }

src/plugins/networkinformationbackends/android/wrapper/androidconnectivitymanager.h

@@ -59,6 +59,7 @@ public:
 
 Q_SIGNALS:
     void connectivityChanged();
+    void captivePortalChanged(bool state);
 
 private:
     friend struct AndroidConnectivityManagerInstance;