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/*
* Copyright (C) 2017 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 <nos/CitadeldProxyClient.h>
#include <android-base/logging.h>
#include <binder/IServiceManager.h>
#include <binder/ProcessState.h>
#include <application.h>
using ::android::defaultServiceManager;
using ::android::sp;
using ::android::IServiceManager;
using ::android::ProcessState;
using ::android::binder::Status;
using ::android::hardware::citadel::ICitadeld;
namespace nos {
CitadeldProxyClient::~CitadeldProxyClient() {
Close();
}
void CitadeldProxyClient::Open() {
// Ensure this process is using the vndbinder
ProcessState::initWithDriver("/dev/vndbinder");
_citadeld = ICitadeld::asInterface(defaultServiceManager()->getService(ICitadeld::descriptor));
}
void CitadeldProxyClient::Close() {
_citadeld.clear();
}
bool CitadeldProxyClient::IsOpen() const {
return _citadeld != nullptr;
}
uint32_t CitadeldProxyClient::CallApp(uint32_t appId, uint16_t arg,
const std::vector<uint8_t>& request,
std::vector<uint8_t>* _response) {
// Binder doesn't pass a nullptr or the capacity so resolve the response
// buffer size before making the call. The response vector may be the same
// as the request vector so the response cannot be directly resized.
std::vector<uint8_t> response(_response == nullptr ? 0 : _response->capacity());
uint32_t appStatus;
Status status = _citadeld->callApp(appId, arg, request, &response,
reinterpret_cast<int32_t*>(&appStatus));
if (status.isOk()) {
if (_response != nullptr) {
*_response = std::move(response);
}
return appStatus;
}
LOG(ERROR) << "Failed to call app via citadeld: " << status.toString8();
return APP_ERROR_IO;
}
ICitadeld& CitadeldProxyClient::Citadeld() {
return *_citadeld.get();
}
} // namespace nos
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