Added home Wi-Fi network setting

app/app.iml

@@ -75,7 +75,6 @@
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jniLibs" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/pre-dexed" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/proguard-rules" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />

app/src/main/AndroidManifest.xml

@@ -4,9 +4,11 @@
 
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="com.android.vending.BILLING" />
+    <!-- http://developer.android.com/guide/topics/security/permissions.html#normal-dangerous -->
 
     <uses-feature
         android:name="android.hardware.wifi"

app/src/main/java/eu/faircode/netguard/ActivitySettings.java

@@ -28,9 +28,12 @@ import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.net.ConnectivityManager;
+import android.net.wifi.WifiConfiguration;
+import android.net.wifi.WifiManager;
 import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
+import android.preference.ListPreference;
 import android.preference.Preference;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceFragment;
@@ -55,7 +58,10 @@ import org.xmlpull.v1.XmlSerializer;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import javax.xml.parsers.ParserConfigurationException;
@@ -91,9 +97,21 @@ public class ActivitySettings extends AppCompatActivity implements SharedPrefere
     protected void onPostCreate(Bundle savedInstanceState) {
         super.onPostCreate(savedInstanceState);
         PreferenceScreen screen = getPreferenceScreen();
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
+
+        ListPreference wifi_home_pref = (ListPreference) screen.findPreference("wifi_home");
+        String ssid = prefs.getString("wifi_home", "");
+        wifi_home_pref.setTitle(getString(R.string.setting_wifi_home, ssid));
+
+        WifiManager wm = (WifiManager) getSystemService(Context.WIFI_SERVICE);
+        List<CharSequence> listSSID = new ArrayList<>();
+        listSSID.add("");
+        for (WifiConfiguration config : wm.getConfiguredNetworks())
+            listSSID.add(config.SSID);
+        wifi_home_pref.setEntries(listSSID.toArray(new CharSequence[0]));
+        wifi_home_pref.setEntryValues(listSSID.toArray(new CharSequence[0]));
 
         // Handle auto enable
-        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
         Preference pref_auto_enable = screen.findPreference("auto_enable");
         pref_auto_enable.setTitle(getString(R.string.setting_auto, prefs.getString("auto_enable", "0")));
 
@@ -247,8 +265,12 @@ public class ActivitySettings extends AppCompatActivity implements SharedPrefere
         } else if ("auto_enable".equals(name))
             getPreferenceScreen().findPreference(name).setTitle(getString(R.string.setting_auto, prefs.getString(name, "0")));
 
+        else if ("wifi_home".equals(name)) {
+            ListPreference pref_wifi_home = (ListPreference) getPreferenceScreen().findPreference(name);
+            pref_wifi_home.setTitle(getString(R.string.setting_wifi_home, prefs.getString(name, "")));
+            SinkholeService.reload(null, "setting changed", this);
 
-        else if ("unmetered_2g".equals(name) ||
+        } else if ("unmetered_2g".equals(name) ||
                 "unmetered_3g".equals(name) ||
                 "unmetered_4g".equals(name)) {
             if (prefs.getBoolean(name, false)) {

app/src/main/java/eu/faircode/netguard/SinkholeService.java

@@ -218,6 +218,8 @@ public class SinkholeService extends VpnService {
         boolean wifi = Util.isWifiActive(this);
         boolean metered = Util.isMeteredNetwork(this);
         boolean useMetered = prefs.getBoolean("use_metered", false);
+        String ssidHome = prefs.getString("wifi_home", "");
+        String ssidNetwork = Util.getWifiSSID(this);
         String generation = Util.getNetworkGeneration(this);
         boolean unmetered_2g = prefs.getBoolean("unmetered_2g", false);
         boolean unmetered_3g = prefs.getBoolean("unmetered_3g", false);
@@ -233,6 +235,8 @@ public class SinkholeService extends VpnService {
         // Update metered state
         if (wifi && (!useMetered || !telephony))
             metered = false;
+        if (wifi && !ssidHome.equals("") && !ssidHome.equals(ssidNetwork))
+            metered = true;
         if (unmetered_2g && "2G".equals(generation))
             metered = false;
         if (unmetered_3g && "3G".equals(generation))

app/src/main/java/eu/faircode/netguard/Util.java

@@ -33,6 +33,7 @@ import android.net.Network;
 import android.net.NetworkInfo;
 import android.net.Uri;
 import android.net.VpnService;
+import android.net.wifi.WifiManager;
 import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
@@ -103,6 +104,11 @@ public class Util {
         return cm.isActiveNetworkMetered();
     }
 
+    public static String getWifiSSID(Context context) {
+        WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        return wm.getConnectionInfo().getSSID();
+    }
+
     public static int getNetworkType(Context context) {
         ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
         NetworkInfo ni = cm.getActiveNetworkInfo();

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

@@ -26,6 +26,7 @@ These issues are caused by bugs in Android, or in the software provided by the m
     <string name="setting_system">Manage system applications</string>
     <string name="setting_auto">Auto enable after %1$s minutes</string>
     <string name="setting_dark">Use dark theme</string>
+    <string name="setting_wifi_home">Wi-Fi home network: %1$s</string>
     <string name="setting_metered">Handle metered Wi-Fi networks</string>
     <string name="setting_metered_2g">Consider 2G unmetered</string>
     <string name="setting_metered_3g">Consider 3G unmetered</string>
@@ -40,6 +41,7 @@ These issues are caused by bugs in Android, or in the software provided by the m
 
     <string name="summary_system">Define rules for system applications (for experts)</string>
     <string name="summary_auto">After disabling using the widget, automatically enable NetGuard again after the selected number of minutes\nEnter zero to disable this option</string>
+    <string name="summary_wifi_home">Apply Wi-Fi network rules for selected network only (apply mobile network rules for other Wi-Fi networks)</string>
     <string name="summary_metered">Apply mobile network rules to metered (paid, tethered) Wi-Fi networks</string>
     <string name="summary_metered_2g">Apply Wi-Fi network rules for 2G data connections</string>
     <string name="summary_metered_3g">Apply Wi-Fi network rules for 3G data connections</string>

app/src/main/res/xml/preferences.xml

@@ -41,6 +41,9 @@
             android:defaultValue="false"
             android:key="dark_theme"
             android:title="@string/setting_dark" />
+        <ListPreference
+            android:key="wifi_home"
+            android:summary="@string/summary_wifi_home" />
         <SwitchPreference
             android:defaultValue="false"
             android:key="use_metered"