56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "RpcTrusty"
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#include <android-base/logging.h>
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#include <android-base/unique_fd.h>
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#include <binder/RpcSession.h>
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#include <binder/RpcTransportTipcAndroid.h>
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#include <trusty/tipc.h>
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namespace android {
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using android::base::unique_fd;
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sp<RpcSession> RpcTrustyConnectWithSessionInitializer(
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const char* device, const char* port,
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std::function<void(sp<RpcSession>&)> sessionInitializer) {
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auto session = RpcSession::make(RpcTransportCtxFactoryTipcAndroid::make());
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// using the callback to initialize the session
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sessionInitializer(session);
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auto request = [=] {
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int tipcFd = tipc_connect(device, port);
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if (tipcFd < 0) {
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LOG(ERROR) << "Failed to connect to Trusty service. Error code: " << tipcFd;
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return unique_fd();
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}
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return unique_fd(tipcFd);
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};
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if (status_t status = session->setupPreconnectedClient(unique_fd{}, request); status != OK) {
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LOG(ERROR) << "Failed to set up Trusty client. Error: " << statusToString(status).c_str();
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return nullptr;
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}
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return session;
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}
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sp<IBinder> RpcTrustyConnect(const char* device, const char* port) {
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auto session = RpcTrustyConnectWithSessionInitializer(device, port, [](auto) {});
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return session->getRootObject();
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}
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} // namespace android
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