Add permission check functions to NetworkStatsService am: df2aef7c1d

Change-Id: Id2df1c6d5a5dc77f59f68772f5b46659fb956bc2

services/core/java/com/android/server/net/NetworkStatsService.java

@@ -23,6 +23,7 @@ import static android.content.Intent.ACTION_SHUTDOWN;
 import static android.content.Intent.ACTION_UID_REMOVED;
 import static android.content.Intent.ACTION_USER_REMOVED;
 import static android.content.Intent.EXTRA_UID;
+import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static android.net.ConnectivityManager.ACTION_TETHER_STATE_CHANGED;
 import static android.net.ConnectivityManager.isNetworkTypeMobile;
 import static android.net.NetworkStack.checkNetworkStackPermission;
@@ -1793,6 +1794,24 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
         }
     }
 
+    // TODO: It is copied from ConnectivitySerivce, consider refactor these check permission
+    //  functions to a proper util.
+    private boolean checkAnyPermissionOf(String... permissions) {
+        for (String permission : permissions) {
+            if (mContext.checkCallingOrSelfPermission(permission) == PERMISSION_GRANTED) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private void enforceAnyPermissionOf(String... permissions) {
+        if (!checkAnyPermissionOf(permissions)) {
+            throw new SecurityException("Requires one of the following permissions: "
+                    + String.join(", ", permissions) + ".");
+        }
+    }
+
     /**
      * Registers a custom provider of {@link android.net.NetworkStats} to combine the network
      * statistics that cannot be seen by the kernel to system. To unregister, invoke the