NSClient connection settings

app/src/main/AndroidManifest.xml

@@ -15,9 +15,10 @@
     <uses-permission android:name="android.permission.SEND_MMS" />
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="com.google.android.permission.PROVIDE_BACKGROUND" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="sugar.free.sightremote.HISTORY_BROADCASTS" />
 
     <uses-permission-sdk-23 android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
@@ -112,6 +113,14 @@
             </intent-filter>
         </receiver>
 
+        <!-- Network change local receiver -->
+        <receiver android:name=".receivers.NetworkChangeReceiver">
+            <intent-filter>
+                <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
+                <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
+            </intent-filter>
+        </receiver>
+
         <!-- Service processing incomming data -->
         <service
             android:name=".Services.DataService"

app/src/main/java/info/nightscout/androidaps/events/EventNetworkChange.java

@@ -0,0 +1,10 @@
+package info.nightscout.androidaps.events;
+
+public class EventNetworkChange extends Event {
+
+    public boolean mobileConnected = false;
+    public boolean wifiConnected = false;
+
+    public String ssid;
+    public boolean roaming = false;
+}

app/src/main/java/info/nightscout/androidaps/plugins/NSClientInternal/NSClientPlugin.java

@@ -24,6 +24,8 @@ import info.nightscout.androidaps.Constants;
 import info.nightscout.androidaps.MainApp;
 import info.nightscout.androidaps.R;
 import info.nightscout.androidaps.events.EventAppExit;
+import info.nightscout.androidaps.events.EventNetworkChange;
+import info.nightscout.androidaps.events.EventPreferenceChange;
 import info.nightscout.androidaps.interfaces.PluginBase;
 import info.nightscout.androidaps.interfaces.PluginDescription;
 import info.nightscout.androidaps.interfaces.PluginType;
@@ -31,6 +33,7 @@ import info.nightscout.androidaps.plugins.NSClientInternal.events.EventNSClientN
 import info.nightscout.androidaps.plugins.NSClientInternal.events.EventNSClientStatus;
 import info.nightscout.androidaps.plugins.NSClientInternal.events.EventNSClientUpdateGUI;
 import info.nightscout.androidaps.plugins.NSClientInternal.services.NSClientService;
+import info.nightscout.androidaps.receivers.NetworkChangeReceiver;
 import info.nightscout.utils.SP;
 import info.nightscout.utils.ToastUtils;
 
@@ -52,13 +55,14 @@ public class NSClientPlugin extends PluginBase {
     Spanned textLog = Html.fromHtml("");
 
     public boolean paused = false;
+    public boolean allowed = true;
     boolean autoscroll = true;
 
     public String status = "";
 
     public NSClientService nsClientService = null;
 
-    public NSClientPlugin() {
+    private NSClientPlugin() {
         super(new PluginDescription()
                 .mainType(PluginType.GENERAL)
                 .fragmentClass(NSClientFragment.class.getName())
@@ -87,6 +91,10 @@ public class NSClientPlugin extends PluginBase {
         Intent intent = new Intent(context, NSClientService.class);
         context.bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
         super.onStart();
+
+        EventNetworkChange event = NetworkChangeReceiver.grabNetworkStatus();
+        if (event != null)
+            MainApp.bus().post(event);
     }
 
     @Override
@@ -111,9 +119,39 @@ public class NSClientPlugin extends PluginBase {
         }
     };
 
-    @SuppressWarnings("UnusedParameters")
     @Subscribe
-    public void onStatusEvent(final EventAppExit e) {
+    public void onStatusEvent(EventPreferenceChange ev) {
+        if (ev.isChanged(R.string.key_ns_wifionly) ||
+                ev.isChanged(R.string.key_ns_wifi_ssids) ||
+                ev.isChanged(R.string.key_ns_allowroaming)
+                ) {
+            EventNetworkChange event = NetworkChangeReceiver.grabNetworkStatus();
+            if (event != null)
+                MainApp.bus().post(event);
+        }
+    }
+
+    @Subscribe
+    public void onStatusEvent(final EventNetworkChange ev) {
+        boolean wifiOnly = SP.getBoolean(R.string.key_ns_wifionly, false);
+        String allowedSSIDs = SP.getString(R.string.key_ns_wifi_ssids, "");
+        boolean allowRoaming = SP.getBoolean(R.string.key_ns_allowroaming, true);
+
+        boolean newAllowedState = true;
+
+        if (!ev.wifiConnected && wifiOnly) newAllowedState = false;
+        if (ev.wifiConnected && !allowedSSIDs.isEmpty() && !allowedSSIDs.contains(ev.ssid))
+            newAllowedState = false;
+        if (!allowRoaming && ev.roaming) newAllowedState = false;
+
+        if (newAllowedState != allowed) {
+            allowed = newAllowedState;
+            MainApp.bus().post(new EventPreferenceChange(R.string.key_nsclientinternal_paused));
+        }
+    }
+
+    @Subscribe
+    public void onStatusEvent(final EventAppExit ignored) {
         if (nsClientService != null)
             MainApp.instance().getApplicationContext().unbindService(mConnection);
     }

app/src/main/java/info/nightscout/androidaps/plugins/NSClientInternal/services/NSClientService.java

@@ -203,7 +203,10 @@ public class NSClientService extends Service {
             nsAPIhashCode = Hashing.sha1().hashString(nsAPISecret, Charsets.UTF_8).toString();
 
         MainApp.bus().post(new EventNSClientStatus("Initializing"));
-        if (MainApp.getSpecificPlugin(NSClientPlugin.class).paused) {
+        if (!MainApp.getSpecificPlugin(NSClientPlugin.class).allowed) {
+            MainApp.bus().post(new EventNSClientNewLog("NSCLIENT", "not allowed"));
+            MainApp.bus().post(new EventNSClientStatus("Not allowed"));
+        } else if (MainApp.getSpecificPlugin(NSClientPlugin.class).paused) {
             MainApp.bus().post(new EventNSClientNewLog("NSCLIENT", "paused"));
             MainApp.bus().post(new EventNSClientStatus("Paused"));
         } else if (!nsEnabled) {

app/src/main/java/info/nightscout/androidaps/receivers/NetworkChangeReceiver.java

@@ -0,0 +1,67 @@
+package info.nightscout.androidaps.receivers;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.net.wifi.SupplicantState;
+import android.net.wifi.WifiInfo;
+import android.net.wifi.WifiManager;
+import android.os.PowerManager;
+import android.support.annotation.Nullable;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import info.nightscout.androidaps.MainApp;
+import info.nightscout.androidaps.events.EventNetworkChange;
+
+public class NetworkChangeReceiver extends BroadcastReceiver {
+    private static Logger log = LoggerFactory.getLogger(NetworkChangeReceiver.class);
+
+    @Override
+    public void onReceive(final Context context, final Intent intent) {
+        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+        if (pm == null) return;
+        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "NetworkChangeReceiver");
+        wl.acquire(10000);
+
+        EventNetworkChange event = grabNetworkStatus();
+        if (event != null)
+            MainApp.bus().post(event);
+
+        wl.release();
+    }
+
+    @Nullable
+    public static EventNetworkChange grabNetworkStatus() {
+        EventNetworkChange event = new EventNetworkChange();
+
+        ConnectivityManager cm = (ConnectivityManager) MainApp.instance().getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
+        if (cm == null) return null;
+        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
+
+        if (activeNetwork != null) {
+            if (activeNetwork.getType() == ConnectivityManager.TYPE_WIFI) {
+                event.wifiConnected = true;
+                WifiManager wifiManager = (WifiManager) MainApp.instance().getApplicationContext().getSystemService(Context.WIFI_SERVICE);
+                if (wifiManager != null) {
+                    WifiInfo wifiInfo = wifiManager.getConnectionInfo();
+                    if (wifiInfo.getSupplicantState() == SupplicantState.COMPLETED) {
+                        event.ssid = wifiInfo.getSSID();
+                    }
+                    log.debug("NETCHANGE: Wifi connected. SSID: " + event.ssid);
+                }
+            }
+            if (activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE) {
+                event.mobileConnected = true;
+                event.roaming = activeNetwork.isRoaming();
+                log.debug("NETCHANGE: Mobile connected. Roaming: " + event.roaming);
+            }
+        } else {
+            log.debug("NETCHANGE: Disconnected.");
+        }
+        return event;
+    }
+}

app/src/main/res/values/strings.xml

@@ -1016,4 +1016,12 @@
     <string name="secondcarbsincrement">Second carbs increment</string>
     <string name="thirdcarbsincrement">Third carbs increment</string>
     <string name="cgm">CGM</string>
+    <string name="key_ns_wifionly" translatable="false">ns_wifionly</string>
+    <string name="key_ns_wifi_ssids" translatable="false">ns_wifi_ssids</string>
+    <string name="key_ns_allowroaming" translatable="false">ns_allowroaming</string>
+    <string name="ns_wifionly">Use WiFi connection only</string>
+    <string name="ns_wifi_ssids">WiFi SSID</string>
+    <string name="connectionsettings_title">Connection settings</string>
+    <string name="ns_wifi_allowedssids">Allowed SSIDs (semicolon separated)</string>
+    <string name="ns_allowroaming">Allow connection in roaming</string>
 </resources>

app/src/main/res/xml/pref_nsclientinternal.xml

@@ -85,6 +85,26 @@
 
         </PreferenceScreen>
 
+        <PreferenceScreen android:title="@string/connectionsettings_title">
+
+            <SwitchPreference
+                android:defaultValue="false"
+                android:key="@string/key_ns_wifionly"
+                android:title="@string/ns_wifionly" />
+
+            <EditTextPreference
+                android:dialogMessage="@string/ns_wifi_allowedssids"
+                android:inputType="text"
+                android:key="@string/key_ns_wifi_ssids"
+                android:title="@string/ns_wifi_ssids" />
+
+            <SwitchPreference
+                android:defaultValue="true"
+                android:key="@string/key_ns_allowroaming"
+                android:title="@string/ns_allowroaming" />
+
+        </PreferenceScreen>
+
        <PreferenceScreen android:title="@string/advancedsettings_title">
 
             <SwitchPreference