Add a binder function verifyPayloadApplicable().
am: 20c96723e9

Change-Id: Ib654454fadb6d7c6dd287b763a427a0c2dd871a5
diff --git a/binder_bindings/android/os/IUpdateEngine.aidl b/binder_bindings/android/os/IUpdateEngine.aidl
index 7e26752..c0e29f5 100644
--- a/binder_bindings/android/os/IUpdateEngine.aidl
+++ b/binder_bindings/android/os/IUpdateEngine.aidl
@@ -37,4 +37,6 @@
   void cancel();
   /** @hide */
   void resetStatus();
+  /** @hide */
+  boolean verifyPayloadApplicable(in String metadataFilename);
 }
diff --git a/binder_service_android.cc b/binder_service_android.cc
index 0305727..ccae3bf 100644
--- a/binder_service_android.cc
+++ b/binder_service_android.cc
@@ -139,6 +139,18 @@
   return Status::ok();
 }
 
+Status BinderUpdateEngineAndroidService::verifyPayloadApplicable(
+    const android::String16& metadata_filename, bool* return_value) {
+  const std::string payload_metadata{
+      android::String8{metadata_filename}.string()};
+  LOG(INFO) << "Received a request of verifying payload metadata in "
+            << payload_metadata << ".";
+
+  // FIXME: Do the actual verification work.
+  *return_value = true;
+  return Status::ok();
+}
+
 bool BinderUpdateEngineAndroidService::UnbindCallback(const IBinder* callback) {
   auto it = std::find_if(
       callbacks_.begin(),
diff --git a/binder_service_android.h b/binder_service_android.h
index eb36e4c..694b80a 100644
--- a/binder_service_android.h
+++ b/binder_service_android.h
@@ -65,6 +65,8 @@
   android::binder::Status resume() override;
   android::binder::Status cancel() override;
   android::binder::Status resetStatus() override;
+  android::binder::Status verifyPayloadApplicable(
+      const android::String16& metadata_filename, bool* return_value) override;
 
  private:
   // Remove the passed |callback| from the list of registered callbacks. Called