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//
// Copyright (C) 2016 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 "tpm_manager/client/tpm_ownership_binder_proxy.h"
#include <base/bind.h>
#include <base/callback.h>
#include <base/logging.h>
#include <binderwrapper/binder_wrapper.h>
#include <utils/Errors.h>
#include "android/tpm_manager/BnTpmManagerClient.h"
#include "android/tpm_manager/BpTpmOwnership.h"
#include "tpm_manager/client/binder_proxy_helper.h"
#include "tpm_manager/common/tpm_manager.pb.h"
#include "tpm_manager/common/tpm_manager_constants.h"
namespace {
template <typename ResponseProtobufType>
void CreateErrorResponse(ResponseProtobufType* response) {
response->set_status(tpm_manager::STATUS_DEVICE_ERROR);
}
} // namespace
namespace tpm_manager {
using android::tpm_manager::ITpmOwnership;
TpmOwnershipBinderProxy::TpmOwnershipBinderProxy(ITpmOwnership* binder)
: binder_(binder) {}
bool TpmOwnershipBinderProxy::Initialize() {
if (binder_) {
return true;
}
android::sp<android::IBinder> service_binder =
android::BinderWrapper::GetOrCreateInstance()->GetService(
kTpmOwnershipBinderName);
if (!service_binder.get()) {
LOG(ERROR) << "TpmOwnershipBinderProxy: Service does not exist.";
return false;
}
default_binder_ = new android::tpm_manager::BpTpmOwnership(service_binder);
binder_ = default_binder_.get();
return true;
}
void TpmOwnershipBinderProxy::GetTpmStatus(
const GetTpmStatusRequest& request,
const GetTpmStatusCallback& callback) {
auto method =
base::Bind(&ITpmOwnership::GetTpmStatus, base::Unretained(binder_));
auto get_error = base::Bind(&CreateErrorResponse<GetTpmStatusReply>);
BinderProxyHelper<GetTpmStatusRequest, GetTpmStatusReply> helper(
method, callback, get_error);
helper.SendRequest(request);
}
void TpmOwnershipBinderProxy::TakeOwnership(
const TakeOwnershipRequest& request,
const TakeOwnershipCallback& callback) {
auto method =
base::Bind(&ITpmOwnership::TakeOwnership, base::Unretained(binder_));
auto get_error = base::Bind(&CreateErrorResponse<TakeOwnershipReply>);
BinderProxyHelper<TakeOwnershipRequest, TakeOwnershipReply> helper(
method, callback, get_error);
helper.SendRequest(request);
}
void TpmOwnershipBinderProxy::RemoveOwnerDependency(
const RemoveOwnerDependencyRequest& request,
const RemoveOwnerDependencyCallback& callback) {
auto method = base::Bind(&ITpmOwnership::RemoveOwnerDependency,
base::Unretained(binder_));
auto get_error = base::Bind(&CreateErrorResponse<RemoveOwnerDependencyReply>);
BinderProxyHelper<RemoveOwnerDependencyRequest, RemoveOwnerDependencyReply>
helper(method, callback, get_error);
helper.SendRequest(request);
}
} // namespace tpm_manager
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