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/*
* Copyright (C) 2024 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 "BackendUnifiedServiceManager.h"
#include <android/os/IAccessor.h>
#include <binder/RpcSession.h>
#if defined(__BIONIC__) && !defined(__ANDROID_VNDK__)
#include <android-base/properties.h>
#endif
namespace android {
using AidlServiceManager = android::os::IServiceManager;
using IAccessor = android::os::IAccessor;
BackendUnifiedServiceManager::BackendUnifiedServiceManager(const sp<AidlServiceManager>& impl)
: mTheRealServiceManager(impl) {}
sp<AidlServiceManager> BackendUnifiedServiceManager::getImpl() {
return mTheRealServiceManager;
}
binder::Status BackendUnifiedServiceManager::getService(const ::std::string& name,
sp<IBinder>* _aidl_return) {
os::Service service;
binder::Status status = getService2(name, &service);
*_aidl_return = service.get<os::Service::Tag::binder>();
return status;
}
binder::Status BackendUnifiedServiceManager::getService2(const ::std::string& name,
os::Service* _out) {
os::Service service;
binder::Status status = mTheRealServiceManager->getService2(name, &service);
toBinderService(service, _out);
return status;
}
binder::Status BackendUnifiedServiceManager::checkService(const ::std::string& name,
os::Service* _out) {
os::Service service;
binder::Status status = mTheRealServiceManager->checkService(name, &service);
toBinderService(service, _out);
return status;
}
void BackendUnifiedServiceManager::toBinderService(const os::Service& in, os::Service* _out) {
switch (in.getTag()) {
case os::Service::Tag::binder: {
*_out = in;
break;
}
case os::Service::Tag::accessor: {
sp<IBinder> accessorBinder = in.get<os::Service::Tag::accessor>();
sp<IAccessor> accessor = interface_cast<IAccessor>(accessorBinder);
if (accessor == nullptr) {
ALOGE("Service#accessor doesn't have accessor. VM is maybe starting...");
*_out = os::Service::make<os::Service::Tag::binder>(nullptr);
break;
}
auto request = [=] {
os::ParcelFileDescriptor fd;
binder::Status ret = accessor->addConnection(&fd);
if (ret.isOk()) {
return base::unique_fd(fd.release());
} else {
ALOGE("Failed to connect to RpcSession: %s", ret.toString8().c_str());
return base::unique_fd(-1);
}
};
auto session = RpcSession::make();
session->setupPreconnectedClient(base::unique_fd{}, request);
session->setSessionSpecificRoot(accessorBinder);
*_out = os::Service::make<os::Service::Tag::binder>(session->getRootObject());
break;
}
default: {
LOG_ALWAYS_FATAL("Unknown service type: %d", in.getTag());
}
}
}
binder::Status BackendUnifiedServiceManager::addService(const ::std::string& name,
const sp<IBinder>& service,
bool allowIsolated, int32_t dumpPriority) {
return mTheRealServiceManager->addService(name, service, allowIsolated, dumpPriority);
}
binder::Status BackendUnifiedServiceManager::listServices(
int32_t dumpPriority, ::std::vector<::std::string>* _aidl_return) {
return mTheRealServiceManager->listServices(dumpPriority, _aidl_return);
}
binder::Status BackendUnifiedServiceManager::registerForNotifications(
const ::std::string& name, const sp<os::IServiceCallback>& callback) {
return mTheRealServiceManager->registerForNotifications(name, callback);
}
binder::Status BackendUnifiedServiceManager::unregisterForNotifications(
const ::std::string& name, const sp<os::IServiceCallback>& callback) {
return mTheRealServiceManager->unregisterForNotifications(name, callback);
}
binder::Status BackendUnifiedServiceManager::isDeclared(const ::std::string& name,
bool* _aidl_return) {
return mTheRealServiceManager->isDeclared(name, _aidl_return);
}
binder::Status BackendUnifiedServiceManager::getDeclaredInstances(
const ::std::string& iface, ::std::vector<::std::string>* _aidl_return) {
return mTheRealServiceManager->getDeclaredInstances(iface, _aidl_return);
}
binder::Status BackendUnifiedServiceManager::updatableViaApex(
const ::std::string& name, ::std::optional<::std::string>* _aidl_return) {
return mTheRealServiceManager->updatableViaApex(name, _aidl_return);
}
binder::Status BackendUnifiedServiceManager::getUpdatableNames(
const ::std::string& apexName, ::std::vector<::std::string>* _aidl_return) {
return mTheRealServiceManager->getUpdatableNames(apexName, _aidl_return);
}
binder::Status BackendUnifiedServiceManager::getConnectionInfo(
const ::std::string& name, ::std::optional<os::ConnectionInfo>* _aidl_return) {
return mTheRealServiceManager->getConnectionInfo(name, _aidl_return);
}
binder::Status BackendUnifiedServiceManager::registerClientCallback(
const ::std::string& name, const sp<IBinder>& service,
const sp<os::IClientCallback>& callback) {
return mTheRealServiceManager->registerClientCallback(name, service, callback);
}
binder::Status BackendUnifiedServiceManager::tryUnregisterService(const ::std::string& name,
const sp<IBinder>& service) {
return mTheRealServiceManager->tryUnregisterService(name, service);
}
binder::Status BackendUnifiedServiceManager::getServiceDebugInfo(
::std::vector<os::ServiceDebugInfo>* _aidl_return) {
return mTheRealServiceManager->getServiceDebugInfo(_aidl_return);
}
[[clang::no_destroy]] static std::once_flag gUSmOnce;
[[clang::no_destroy]] static sp<BackendUnifiedServiceManager> gUnifiedServiceManager;
sp<BackendUnifiedServiceManager> getBackendUnifiedServiceManager() {
std::call_once(gUSmOnce, []() {
#if defined(__BIONIC__) && !defined(__ANDROID_VNDK__)
/* wait for service manager */ {
using std::literals::chrono_literals::operator""s;
using android::base::WaitForProperty;
while (!WaitForProperty("servicemanager.ready", "true", 1s)) {
ALOGE("Waited for servicemanager.ready for a second, waiting another...");
}
}
#endif
sp<AidlServiceManager> sm = nullptr;
while (sm == nullptr) {
sm = interface_cast<AidlServiceManager>(
ProcessState::self()->getContextObject(nullptr));
if (sm == nullptr) {
ALOGE("Waiting 1s on context object on %s.",
ProcessState::self()->getDriverName().c_str());
sleep(1);
}
}
gUnifiedServiceManager = sp<BackendUnifiedServiceManager>::make(sm);
});
return gUnifiedServiceManager;
}
} // namespace android
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