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/*
* Copyright (C) 2022 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.
*/
#define LOG_TAG "RpcTrusty"
#include <binder/RpcSession.h>
#include <binder/RpcTransportTipcAndroid.h>
#include <binder/unique_fd.h>
#include <trusty/tipc.h>
namespace android {
using android::binder::unique_fd;
sp<RpcSession> RpcTrustyConnectWithSessionInitializer(
const char* device, const char* port,
std::function<void(sp<RpcSession>&)> sessionInitializer) {
auto session = RpcSession::make(RpcTransportCtxFactoryTipcAndroid::make());
// using the callback to initialize the session
sessionInitializer(session);
auto request = [=] {
int tipcFd = tipc_connect(device, port);
if (tipcFd < 0) {
ALOGE("Failed to connect to Trusty service. Error code: %d", tipcFd);
return unique_fd();
}
return unique_fd(tipcFd);
};
if (status_t status = session->setupPreconnectedClient(unique_fd{}, request); status != OK) {
ALOGE("Failed to set up Trusty client. Error: %s", statusToString(status).c_str());
return nullptr;
}
return session;
}
sp<IBinder> RpcTrustyConnect(const char* device, const char* port) {
auto session = RpcTrustyConnectWithSessionInitializer(device, port, [](auto) {});
return session->getRootObject();
}
} // namespace android
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