Add RPC binder as unstable API with Rust bindgen
The build targets have limited visibility to the current (and hopefully
no more) clients.
Bug: 190547489
Bug: 189947807
Test: use in the client
Change-Id: I8701066e0b44c21d2b2a77bbf872efd4e28c3662
diff --git a/libs/binder/libbinder_rpc_unstable.cpp b/libs/binder/libbinder_rpc_unstable.cpp
new file mode 100644
index 0000000..68ec669
--- /dev/null
+++ b/libs/binder/libbinder_rpc_unstable.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/binder_libbinder.h>
+#include <binder/RpcServer.h>
+#include <binder/RpcSession.h>
+
+using android::RpcServer;
+using android::RpcSession;
+
+extern "C" {
+
+bool RunRpcServer(AIBinder* service, unsigned int port) {
+ auto server = RpcServer::make();
+ server->iUnderstandThisCodeIsExperimentalAndIWillNotUseItInProduction();
+ if (!server->setupVsockServer(port)) {
+ LOG(ERROR) << "Failed to set up vsock server with port " << port;
+ return false;
+ }
+ server->setRootObject(AIBinder_toPlatformBinder(service));
+ server->join();
+
+ // Shutdown any open sessions since server failed.
+ (void)server->shutdown();
+ return true;
+}
+
+AIBinder* RpcClient(unsigned int cid, unsigned int port) {
+ auto session = RpcSession::make();
+ if (!session->setupVsockClient(cid, port)) {
+ LOG(ERROR) << "Failed to set up vsock client with CID " << cid << " and port " << port;
+ return nullptr;
+ }
+ return AIBinder_fromPlatformBinder(session->getRootObject());
+}
+}