text: // Copyright 2021 gRPC authors.
  //
  // 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 <grpc/support/port_platform.h>
  
  #ifndef GRPC_NO_BINDER
  
  #include <grpcpp/security/binder_security_policy.h>
  #include <grpcpp/security/server_credentials.h>
  
  #include "src/core/ext/transport/binder/server/binder_server.h"
  #include "src/core/ext/transport/binder/wire_format/binder_android.h"
  
  namespace grpc {
  namespace experimental {
  
  namespace {
  
  class BinderServerCredentialsImpl final : public ServerCredentials {
   public:
    explicit BinderServerCredentialsImpl(
        std::shared_ptr<grpc::experimental::binder::SecurityPolicy>
            security_policy)
        : security_policy_(security_policy) {}
  #ifdef GPR_SUPPORT_BINDER_TRANSPORT
    int AddPortToServer(const std::string& addr, grpc_server* server) override {
      return grpc_core::AddBinderPort(
          std::string(addr), server,
          [](grpc_binder::TransactionReceiver::OnTransactCb transact_cb) {
            return absl::make_unique<grpc_binder::TransactionReceiverAndroid>(
                nullptr, std::move(transact_cb));
          },
          security_policy_);
    }
  #else
    int AddPortToServer(const std::string& /*addr*/,
                        grpc_server* /*server*/) override {
      return 0;
    }
  #endif  // GPR_SUPPORT_BINDER_TRANSPORT
  
    void SetAuthMetadataProcessor(
        const std::shared_ptr<AuthMetadataProcessor>& /*processor*/) override {
      GPR_ASSERT(false);
    }
  
   private:
    bool IsInsecure() const override { return true; }
  
    std::shared_ptr<grpc::experimental::binder::SecurityPolicy> security_policy_;
  };
  
  }  // namespace
  
  std::shared_ptr<ServerCredentials> BinderServerCredentials(
      std::shared_ptr<grpc::experimental::binder::SecurityPolicy>
          security_policy) {
    GPR_ASSERT(security_policy != nullptr);
    return std::shared_ptr<ServerCredentials>(
        new BinderServerCredentialsImpl(security_policy));
  }
  
  }  // namespace experimental
  }  // namespace grpc
  #endif
  