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binder_service_android.cc
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binder_service_android.cc
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//
// Copyright (C) 2015 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 "update_engine/binder_service_android.h"
#include <base/bind.h>
#include <base/logging.h>
#include <binderwrapper/binder_wrapper.h>
#include <brillo/errors/error.h>
#include <utils/String8.h>
using android::binder::Status;
using android::os::IUpdateEngineCallback;
using update_engine::UpdateEngineStatus;
namespace {
Status ErrorPtrToStatus(const brillo::ErrorPtr& error) {
return Status::fromServiceSpecificError(
1, android::String8{error->GetMessage().c_str()});
}
} // namespace
namespace chromeos_update_engine {
BinderUpdateEngineAndroidService::BinderUpdateEngineAndroidService(
ServiceDelegateAndroidInterface* service_delegate)
: service_delegate_(service_delegate) {
}
void BinderUpdateEngineAndroidService::SendStatusUpdate(
const UpdateEngineStatus& update_engine_status) {
last_status_ = static_cast<int>(update_engine_status.status);
last_progress_ = update_engine_status.progress;
for (auto& callback : callbacks_) {
callback->onStatusUpdate(last_status_, last_progress_);
}
}
void BinderUpdateEngineAndroidService::SendPayloadApplicationComplete(
ErrorCode error_code) {
for (auto& callback : callbacks_) {
callback->onPayloadApplicationComplete(static_cast<int>(error_code));
}
}
Status BinderUpdateEngineAndroidService::bind(
const android::sp<IUpdateEngineCallback>& callback, bool* return_value) {
callbacks_.emplace_back(callback);
const android::sp<IBinder>& callback_binder =
IUpdateEngineCallback::asBinder(callback);
auto binder_wrapper = android::BinderWrapper::Get();
binder_wrapper->RegisterForDeathNotifications(
callback_binder,
base::Bind(
base::IgnoreResult(&BinderUpdateEngineAndroidService::UnbindCallback),
base::Unretained(this),
base::Unretained(callback_binder.get())));
// Send an status update on connection (except when no update sent so far),
// since the status update is oneway and we don't need to wait for the
// response.
if (last_status_ != -1)
callback->onStatusUpdate(last_status_, last_progress_);
*return_value = true;
return Status::ok();
}
Status BinderUpdateEngineAndroidService::unbind(
const android::sp<IUpdateEngineCallback>& callback, bool* return_value) {
const android::sp<IBinder>& callback_binder =
IUpdateEngineCallback::asBinder(callback);
auto binder_wrapper = android::BinderWrapper::Get();
binder_wrapper->UnregisterForDeathNotifications(callback_binder);
*return_value = UnbindCallback(callback_binder.get());
return Status::ok();
}
Status BinderUpdateEngineAndroidService::applyPayload(
const android::String16& url,
int64_t payload_offset,
int64_t payload_size,
const std::vector<android::String16>& header_kv_pairs) {
const std::string payload_url{android::String8{url}.string()};
std::vector<std::string> str_headers;
str_headers.reserve(header_kv_pairs.size());
for (const auto& header : header_kv_pairs) {
str_headers.emplace_back(android::String8{header}.string());
}
brillo::ErrorPtr error;
if (!service_delegate_->ApplyPayload(
payload_url, payload_offset, payload_size, str_headers, &error)) {
return ErrorPtrToStatus(error);
}
return Status::ok();
}
Status BinderUpdateEngineAndroidService::suspend() {
brillo::ErrorPtr error;
if (!service_delegate_->SuspendUpdate(&error))
return ErrorPtrToStatus(error);
return Status::ok();
}
Status BinderUpdateEngineAndroidService::resume() {
brillo::ErrorPtr error;
if (!service_delegate_->ResumeUpdate(&error))
return ErrorPtrToStatus(error);
return Status::ok();
}
Status BinderUpdateEngineAndroidService::cancel() {
brillo::ErrorPtr error;
if (!service_delegate_->CancelUpdate(&error))
return ErrorPtrToStatus(error);
return Status::ok();
}
Status BinderUpdateEngineAndroidService::resetStatus() {
brillo::ErrorPtr error;
if (!service_delegate_->ResetStatus(&error))
return ErrorPtrToStatus(error);
return Status::ok();
}
Status BinderUpdateEngineAndroidService::verifyPayloadApplicable(
const android::String16& metadata_filename, bool* return_value) {
const std::string payload_metadata{
android::String8{metadata_filename}.string()};
LOG(INFO) << "Received a request of verifying payload metadata in "
<< payload_metadata << ".";
brillo::ErrorPtr error;
*return_value =
service_delegate_->VerifyPayloadApplicable(payload_metadata, &error);
if (error != nullptr)
return ErrorPtrToStatus(error);
return Status::ok();
}
bool BinderUpdateEngineAndroidService::UnbindCallback(const IBinder* callback) {
auto it = std::find_if(
callbacks_.begin(),
callbacks_.end(),
[&callback](const android::sp<IUpdateEngineCallback>& elem) {
return IUpdateEngineCallback::asBinder(elem).get() == callback;
});
if (it == callbacks_.end()) {
LOG(ERROR) << "Unable to unbind unknown callback.";
return false;
}
callbacks_.erase(it);
return true;
}
} // namespace chromeos_update_engine