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// Copyright 2019 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/dbus/gnubby/gnubby_client.h"
#include "base/logging.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/timer/timer.h"
#include "chromeos/ash/components/dbus/gnubby/fake_gnubby_client.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace ash {
namespace {
GnubbyClient* g_instance = nullptr;
class GnubbyClientImpl : public GnubbyClient {
public:
GnubbyClientImpl() {}
GnubbyClientImpl(const GnubbyClientImpl&) = delete;
GnubbyClientImpl& operator=(const GnubbyClientImpl&) = delete;
// GnubbyClient override.
void AddObserver(Observer* observer) override {
observer_list_.AddObserver(observer);
}
// GnubbyClient override.
void RemoveObserver(Observer* observer) override {
observer_list_.RemoveObserver(observer);
}
void PromptUserAuth(dbus::Signal* signal) {
for (auto& observer : observer_list_)
observer.PromptUserAuth();
}
void Init(dbus::Bus* bus) override {
dbus::ObjectProxy* proxy_ = bus->GetObjectProxy(
u2f::kU2FServiceName, dbus::ObjectPath(u2f::kU2FServicePath));
proxy_->ConnectToSignal(
u2f::kU2FInterface, u2f::kU2FUserNotificationSignal,
base::BindRepeating(&GnubbyClientImpl::PromptUserAuth,
weak_ptr_factory_.GetWeakPtr()),
base::BindOnce(&GnubbyClientImpl::OnSignalConnected,
weak_ptr_factory_.GetWeakPtr()));
}
private:
// Handles the result of signal connection setup.
void OnSignalConnected(const std::string& interface,
const std::string& signal,
bool succeeded) {
LOG_IF(ERROR, !succeeded)
<< "Connect to " << interface << " " << signal << " failed.";
}
base::ObserverList<Observer>::Unchecked observer_list_;
base::WeakPtrFactory<GnubbyClientImpl> weak_ptr_factory_{this};
};
} // namespace
// static
GnubbyClient* GnubbyClient::Get() {
return g_instance;
}
// static
void GnubbyClient::Initialize(dbus::Bus* bus) {
CHECK(bus);
(new GnubbyClientImpl())->Init(bus);
}
// static
void GnubbyClient::InitializeFake() {
(new FakeGnubbyClient())->Init(nullptr);
}
// static
void GnubbyClient::Shutdown() {
CHECK(g_instance);
delete g_instance;
}
GnubbyClient::GnubbyClient() {
CHECK(!g_instance);
g_instance = this;
}
GnubbyClient::~GnubbyClient() {
CHECK_EQ(g_instance, this);
g_instance = nullptr;
}
} // namespace ash
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