From f0ec974d143556e4729ac21c7fcf6a1f1a3687df Mon Sep 17 00:00:00 2001
From: cyBerta <cyberta@riseup.net>
Date: Fri, 3 Jan 2020 01:01:56 +0100
Subject: detect hotspot state and disable/enable controls in TetheringDialog
 accordingly

---
 .../tethering/WifiHotspotObserver.java             | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotObserver.java

(limited to 'app/src/main/java/se/leap/bitmaskclient/tethering/WifiHotspotObserver.java')

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;
+    }
+}
-- 
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