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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/carrier_lock/fcm_topic_subscriber_impl.h"
#include "base/functional/callback_helpers.h"
#include "base/logging.h"
#include "base/time/time.h"
#include "components/gcm_driver/gcm_driver.h"
#include "components/gcm_driver/instance_id/instance_id.h"
#include "components/gcm_driver/instance_id/instance_id_driver.h"
namespace ash::carrier_lock {
FcmTopicSubscriberImpl::FcmTopicSubscriberImpl(
gcm::GCMDriver* gcm_driver,
std::string app_id,
std::string sender_id,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory)
: gcm_driver_(gcm_driver),
url_loader_factory_(url_loader_factory),
app_id_(app_id),
sender_id_(sender_id),
weakptr_factory_(this) {
DCHECK(!app_id.empty());
DCHECK(!sender_id.empty());
}
FcmTopicSubscriberImpl::~FcmTopicSubscriberImpl() {
if (gcm_driver_) {
gcm_driver_->RemoveAppHandler(app_id_);
}
}
bool FcmTopicSubscriberImpl::Initialize(NotificationCallback notification) {
if (!gcm_driver_) {
return false;
}
notification_callback_ = std::move(notification);
if (!gcm_driver_->GetAppHandler(app_id_)) {
gcm_driver_->AddAppHandler(app_id_, this);
}
if (!instance_id_driver_) {
instance_id_driver_ =
std::make_unique<instance_id::InstanceIDDriver>(gcm_driver_);
}
if (instance_id_driver_) {
return true;
}
return false;
}
void FcmTopicSubscriberImpl::SubscribeTopic(const std::string& topic,
Callback callback) {
if (request_callback_) {
LOG(ERROR) << "FcmTopicSubscriberImpl cannot handle multiple requests.";
std::move(callback).Run(Result::kHandlerBusy);
return;
}
topic_ = topic;
subscribe_callback_ = std::move(callback);
if (token_.empty()) {
RequestToken(base::BindOnce(&FcmTopicSubscriberImpl::Subscribe,
weakptr_factory_.GetWeakPtr()));
} else {
Subscribe(Result::kSuccess);
}
}
void FcmTopicSubscriberImpl::RequestToken(Callback callback) {
if (request_callback_) {
LOG(ERROR) << "FcmTopicSubscriberImpl cannot handle multiple requests.";
std::move(callback).Run(Result::kHandlerBusy);
return;
}
request_callback_ = std::move(callback);
if (!instance_id_driver_) {
LOG(ERROR) << "No FCM instance id driver!";
ReturnError(Result::kInitializationFailed);
return;
}
instance_id::InstanceID* iid = instance_id_driver_->GetInstanceID(app_id_);
if (!iid) {
LOG(ERROR) << "Failed to get FCM Instance ID";
ReturnError(Result::kInitializationFailed);
return;
}
iid->GetToken(sender_id_, instance_id::kGCMScope,
/*time_to_live=*/base::TimeDelta(),
{instance_id::InstanceID::Flags::kIsLazy},
base::BindOnce(&FcmTopicSubscriberImpl::OnGetToken,
weakptr_factory_.GetWeakPtr()));
}
std::string const FcmTopicSubscriberImpl::token() {
return token_;
}
void FcmTopicSubscriberImpl::OnGetToken(
const std::string& token,
instance_id::InstanceID::Result result) {
if (result == instance_id::InstanceID::Result::SUCCESS) {
token_ = token;
if (is_testing()) {
// The unit tests use FakeGCMDriverForInstanceID which does not implement
// GetGCMStatistics method and the call below times out. Returning success
// here is needed to continue with the values defined in unit test.
ReturnSuccess();
return;
}
gcm_driver_->GetGCMStatistics(
base::BindOnce(&FcmTopicSubscriberImpl::OnGetGcmStatistics,
weakptr_factory_.GetWeakPtr()),
gcm::GCMDriver::KEEP_LOGS);
return;
}
LOG(ERROR) << "Failed to get FCM token";
switch (result) {
case instance_id::InstanceID::INVALID_PARAMETER:
ReturnError(Result::kInvalidInput);
return;
case instance_id::InstanceID::DISABLED:
ReturnError(Result::kInitializationFailed);
return;
case instance_id::InstanceID::NETWORK_ERROR:
ReturnError(Result::kConnectionError);
return;
case instance_id::InstanceID::SERVER_ERROR:
ReturnError(Result::kServerInternalError);
return;
case instance_id::InstanceID::ASYNC_OPERATION_PENDING:
case instance_id::InstanceID::UNKNOWN_ERROR:
default:
ReturnError(Result::kRequestFailed);
}
}
void FcmTopicSubscriberImpl::OnGetGcmStatistics(
const gcm::GCMClient::GCMStatistics& statistics) {
android_id_ = statistics.android_id;
android_secret_ = statistics.android_secret;
ReturnSuccess();
}
void FcmTopicSubscriberImpl::Subscribe(Result request_token_result) {
request_callback_ = std::move(subscribe_callback_);
if (request_token_result != Result::kSuccess) {
ReturnError(request_token_result);
return;
}
if (topic_.empty() || !android_secret_) {
ReturnError(Result::kInvalidInput);
return;
}
TopicSubscriptionRequest::RequestInfo request_info(
android_id_, android_secret_, app_id_, token_, topic_,
/*unsubscribe=*/false);
subscription_request_ = std::make_unique<TopicSubscriptionRequest>(
request_info, url_loader_factory_, std::move(request_callback_));
subscription_request_->Start();
}
void FcmTopicSubscriberImpl::ReturnError(Result err) {
std::move(request_callback_).Run(err);
}
void FcmTopicSubscriberImpl::ReturnSuccess() {
std::move(request_callback_).Run(Result::kSuccess);
}
void FcmTopicSubscriberImpl::ShutdownHandler() {
NOTREACHED() << "FcmTopicSubscriberImpl should be destroyed before GCMDriver";
}
void FcmTopicSubscriberImpl::OnStoreReset() {}
void FcmTopicSubscriberImpl::OnMessage(const std::string& app_id,
const gcm::IncomingMessage& message) {
// Sender id is set to topic's name if message comes from subscribed topic
if (!notification_callback_.is_null()) {
notification_callback_.Run(message.sender_id.starts_with("/topics/"));
}
}
void FcmTopicSubscriberImpl::OnMessagesDeleted(const std::string& app_id) {}
void FcmTopicSubscriberImpl::OnSendError(
const std::string& app_id,
const gcm::GCMClient::SendErrorDetails& send_error_details) {}
void FcmTopicSubscriberImpl::OnSendAcknowledged(const std::string& app_id,
const std::string& message_id) {
}
bool FcmTopicSubscriberImpl::CanHandle(const std::string& app_id) const {
return app_id == app_id_;
}
} // namespace ash::carrier_lock
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