Actually check if an OTA is encrypted

src/org/lineageos/updater/controller/UpdaterService.java

@@ -181,8 +181,7 @@ public class UpdaterService extends Service {
                                 update.getFile().getAbsolutePath() + Constants.UNCRYPT_FILE_EXT);
                         update.getFile().renameTo(uncrytpFile);
                         installPackage(uncrytpFile);
-                    } else if (update.getFile().getAbsolutePath().startsWith("/data/") &&
-                            Utils.isDeviceEncrypted(this)) {
+                    } else if (Utils.isEncrypted(this, update.getFile())) {
                         // uncrypt rewrites the file so that it can be read without mounting
                         // the filesystem, so create a copy of it.
                         File uncrytpFile = new File(

src/org/lineageos/updater/misc/Utils.java

@@ -15,7 +15,6 @@
  */
 package org.lineageos.updater.misc;
 
-import android.app.admin.DevicePolicyManager;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
@@ -26,6 +25,7 @@ import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
 import android.os.Environment;
 import android.os.SystemProperties;
+import android.os.storage.StorageManager;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.widget.Toast;
@@ -327,10 +327,8 @@ public class Utils {
         Toast.makeText(context, toastMessage, Toast.LENGTH_SHORT).show();
     }
 
-    public static boolean isDeviceEncrypted(Context context) {
-        DevicePolicyManager dpm =
-                (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
-        int status = dpm.getStorageEncryptionStatus();
-        return status == DevicePolicyManager.ENCRYPTION_STATUS_ACTIVE;
+    public static boolean isEncrypted(Context context, File file) {
+        StorageManager sm = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
+        return sm.isEncrypted(file);
     }
 }