Disable battery optimization (Doze) for the mitm addon

It can interfere with the mitm service, causing connections to get stuck
until device is rebooted

app/src/main/java/com/emanuelef/remote_capture/MitmAddon.java

@@ -14,7 +14,7 @@
  * You should have received a copy of the GNU General Public License
  * along with PCAPdroid.  If not, see <http://www.gnu.org/licenses/>.
  *
- * Copyright 2022 - Emanuele Faranda
+ * Copyright 2022-24 - Emanuele Faranda
  */
 
 package com.emanuelef.remote_capture;
@@ -34,6 +34,7 @@
 import android.os.Message;
 import android.os.Messenger;
 import android.os.ParcelFileDescriptor;
+import android.os.PowerManager;
 import android.os.RemoteException;
 
 import androidx.annotation.NonNull;
@@ -48,8 +49,8 @@
 import java.lang.ref.WeakReference;
 
 public class MitmAddon {
-    public static final long PACKAGE_VERSION_CODE = 16;
-    public static final String PACKAGE_VERSION_NAME = "v0.16";
+    public static final long PACKAGE_VERSION_CODE = 17;
+    public static final String PACKAGE_VERSION_NAME = "v1.0";
     public static final String REPOSITORY = "https://github.com/emanuele-f/PCAPdroid-mitm";
     private static final String TAG = "MitmAddon";
     private final Context mContext;
@@ -295,4 +296,28 @@ public boolean stopProxy() {
             return false;
         }
     }
+
+    // NOTE: doze could be disabled by PCAPdroid itself, however this is moved to the addon to avoid
+    // any issues with the REQUEST_IGNORE_BATTERY_OPTIMIZATIONS Google Play policies
+    public boolean disableDoze() {
+        if(mService == null)
+            return false;
+
+        Log.i(TAG, "Send disable doze");
+        Message msg = Message.obtain(null, MitmAPI.MSG_DISABLE_DOZE);
+        try {
+            mService.send(msg);
+            return true;
+        } catch (RemoteException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    public static boolean isDozeEnabled(Context context) {
+        final PowerManager manager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+
+        return (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) && (manager != null)
+                && !manager.isIgnoringBatteryOptimizations(MitmAPI.PACKAGE_NAME);
+    }
 }

app/src/main/java/com/emanuelef/remote_capture/MitmReceiver.java

@@ -14,7 +14,7 @@
  * You should have received a copy of the GNU General Public License
  * along with PCAPdroid.  If not, see <http://www.gnu.org/licenses/>.
  *
- * Copyright 2022 - Emanuele Faranda
+ * Copyright 2022-24 - Emanuele Faranda
  */
 
 package com.emanuelef.remote_capture;
@@ -483,6 +483,11 @@ public void onMitmGetCaCertificateResult(@Nullable String ca_pem) {
             return;
         }
 
+        if (MitmAddon.isDozeEnabled(mContext)) {
+            Utils.showToastLong(mContext, R.string.mitm_doze_notice);
+            mAddon.disableDoze();
+        }
+
         if(mThread != null)
             mThread.interrupt();
 

app/src/main/java/com/emanuelef/remote_capture/activities/AboutActivity.java

@@ -14,7 +14,7 @@
  * You should have received a copy of the GNU General Public License
  * along with PCAPdroid.  If not, see <http://www.gnu.org/licenses/>.
  *
- * Copyright 2020-21 - Emanuele Faranda
+ * Copyright 2020-24 - Emanuele Faranda
  */
 
 package com.emanuelef.remote_capture.activities;
@@ -55,6 +55,7 @@
 import com.emanuelef.remote_capture.Billing;
 import com.emanuelef.remote_capture.CaptureService;
 import com.emanuelef.remote_capture.Log;
+import com.emanuelef.remote_capture.MitmAddon;
 import com.emanuelef.remote_capture.R;
 import com.emanuelef.remote_capture.Utils;
 import com.emanuelef.remote_capture.model.Prefs;
@@ -147,6 +148,7 @@ public boolean onMenuItemSelected(MenuItem item) {
             String deviceInfo = Utils.getBuildInfo(this) + "\n\n" +
                     Prefs.asString(this);
 
+            // Private DNS
             Utils.PrivateDnsMode dns_mode = CaptureService.getPrivateDnsMode();
             if(dns_mode == null) {
                 if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
@@ -164,6 +166,9 @@ public boolean onMenuItemSelected(MenuItem item) {
             if(dns_mode != null)
                 deviceInfo += "\n" + "PrivateDnsMode: " + dns_mode;
 
+            // Mitm doze
+            deviceInfo += "\n" + "MitmBatteryOptimized: " + ((MitmAddon.isInstalled(this) && MitmAddon.isDozeEnabled(this)) ? "true" : "false");
+
             LayoutInflater inflater = LayoutInflater.from(this);
             View view = inflater.inflate(R.layout.scrollable_dialog, null);
             ((TextView)view.findViewById(R.id.text)).setText(deviceInfo);

app/src/main/java/com/pcapdroid/mitm/MitmAPI.java

@@ -30,6 +30,7 @@ public class MitmAPI {
     public static final int MSG_START_MITM = 1;
     public static final int MSG_GET_CA_CERTIFICATE = 2;
     public static final int MSG_STOP_MITM = 3;
+    public static final int MSG_DISABLE_DOZE = 4;
     public static final String MITM_CONFIG = "mitm_config";
     public static final String CERTIFICATE_RESULT = "certificate";
     public static final String SSLKEYLOG_RESULT = "sslkeylog";

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

@@ -493,4 +493,5 @@
     <string name="decryption_info_no_rule">This connection will not be decrypted. Create a decryption rule to decrypt it</string>
     <string name="tls_decryption_no_rules_notice">TLS decryption is only applied to connections that match the configured rules. Do you want to create decryption rules now?</string>
     <string name="active_vpn_detected">Active VPN detected</string>
+    <string name="mitm_doze_notice">Battery optimization may interfere with the mitm addon</string>
 </resources>