detect hotspot state and disable/enable controls in TetheringDialog accordingly

3 files changed, 84 insertions, 0 deletions

diff --git a/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotBroadcastReceiver.java b/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotBroadcastReceiver.java
new file mode 100644
index 00000000..1d81eff5
--- /dev/null
+++ b/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotBroadcastReceiver.java
@@ -0,0 +1,20 @@
+package se.leap.bitmaskclient.tethering;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.net.wifi.WifiManager;
+
+public class WifiHotspotBroadcastReceiver extends BroadcastReceiver {
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if ("android.net.wifi.WIFI_AP_STATE_CHANGED".equals(intent.getAction())) {
+            int apState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 0);
+            if (WifiHotspotState.WIFI_AP_STATE_ENABLED.ordinal() == apState % 10) {
+                WifiHotspotObserver.getInstance().setEnabled(true);
+            } else {
+                WifiHotspotObserver.getInstance().setEnabled(false);
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotObserver.java b/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotObserver.java
new file mode 100644
index 00000000..578c5552
--- /dev/null
+++ b/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotObserver.java
@@ -0,0 +1,55 @@
+package se.leap.bitmaskclient.tethering;
+
+import android.content.Context;
+import android.content.IntentFilter;
+import android.net.wifi.WifiManager;
+
+import java.lang.reflect.Method;
+
+public class WifiHotspotObserver {
+    private static WifiHotspotObserver instance;
+
+    private boolean isEnabled;
+    private WifiManager wifiManager;
+    private WifiHotspotBroadcastReceiver broadcastReceiver;
+
+    private WifiHotspotObserver() {
+    }
+
+    public static void init(Context context) {
+        if (instance == null) {
+            instance = new WifiHotspotObserver();
+            instance.broadcastReceiver = new WifiHotspotBroadcastReceiver();
+            IntentFilter intentFilter = new IntentFilter("android.net.wifi.WIFI_AP_STATE_CHANGED");
+            context.getApplicationContext().registerReceiver(instance.broadcastReceiver, intentFilter);
+            instance.wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
+            instance.setEnabled(instance.isWifiApEnabled());
+        }
+    }
+
+    private boolean isWifiApEnabled() {
+        try {
+            Method method = instance.wifiManager.getClass().getMethod("getWifiApState");
+            int tmp = ((Integer) method.invoke(wifiManager));
+            return WifiHotspotState.WIFI_AP_STATE_ENABLED.ordinal() == tmp % 10;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+    public static WifiHotspotObserver getInstance() {
+        if (instance == null) {
+            throw new RuntimeException("Call init() first!");
+        }
+
+        return instance;
+    }
+
+    void setEnabled(boolean enabled) {
+        isEnabled = enabled;
+    }
+
+    public boolean isEnabled() {
+        return isEnabled;
+    }
+}
diff --git a/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotState.java b/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotState.java
new file mode 100644
index 00000000..9cd7f793
--- /dev/null
+++ b/app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotState.java
@@ -0,0 +1,9 @@
+package se.leap.bitmaskclient.tethering;
+
+public enum WifiHotspotState {
+    WIFI_AP_STATE_DISABLING,
+    WIFI_AP_STATE_DISABLED,
+    WIFI_AP_STATE_ENABLING,
+    WIFI_AP_STATE_ENABLED,
+    WIFI_AP_STATE_FAILED
+}