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- // Copyright 2021 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "device/bluetooth/dbus/bluetooth_admin_policy_client.h"
- #include "base/bind.h"
- #include "base/logging.h"
- #include "base/memory/ptr_util.h"
- #include "base/memory/raw_ptr.h"
- #include "base/observer_list.h"
- #include "dbus/bus.h"
- #include "dbus/message.h"
- #include "dbus/object_manager.h"
- #include "dbus/object_proxy.h"
- #include "third_party/cros_system_api/dbus/service_constants.h"
- const char kNoResponseError[] = "org.chromium.Error.NoResponse";
- const char kUnknownAdminPolicyError[] = "org.chromium.Error.UnknownAdminPolicy";
- namespace bluez {
- BluetoothAdminPolicyClient::Properties::Properties(
- dbus::ObjectProxy* object_proxy,
- const std::string& interface_name,
- const PropertyChangedCallback& callback)
- : dbus::PropertySet(object_proxy, interface_name, callback) {
- RegisterProperty(bluetooth_admin_policy::kServiceAllowListProperty,
- &service_allow_list);
- RegisterProperty(bluetooth_admin_policy::kIsBlockedByPolicyProperty,
- &is_blocked_by_policy);
- }
- BluetoothAdminPolicyClient::Properties::~Properties() = default;
- // The BluetoothAdminPolicyClient implementation used in production.
- class BluetoothAdminPolicyClientImpl : public BluetoothAdminPolicyClient,
- public dbus::ObjectManager::Interface {
- public:
- BluetoothAdminPolicyClientImpl() = default;
- ~BluetoothAdminPolicyClientImpl() override {
- // There is an instance of this client that is created but not initialized
- // on Linux. See 'Alternate D-Bus Client' note in bluez_dbus_manager.h.
- if (object_manager_) {
- object_manager_->UnregisterInterface(
- bluetooth_adapter::kBluetoothAdapterInterface);
- }
- }
- // BluetoothAdminPolicyClient override.
- void AddObserver(BluetoothAdminPolicyClient::Observer* observer) override {
- DCHECK(observer);
- observers_.AddObserver(observer);
- }
- // BluetoothAdminPolicyClient override.
- void RemoveObserver(BluetoothAdminPolicyClient::Observer* observer) override {
- DCHECK(observer);
- observers_.RemoveObserver(observer);
- }
- // dbus::ObjectManager::Interface override.
- dbus::PropertySet* CreateProperties(
- dbus::ObjectProxy* object_proxy,
- const dbus::ObjectPath& object_path,
- const std::string& interface_name) override {
- return new Properties(
- object_proxy, interface_name,
- base::BindRepeating(&BluetoothAdminPolicyClientImpl::OnPropertyChanged,
- weak_ptr_factory_.GetWeakPtr(), object_path));
- }
- // BluetoothAdminPolicyClient override.
- Properties* GetProperties(const dbus::ObjectPath& object_path) override {
- return static_cast<Properties*>(object_manager_->GetProperties(
- object_path,
- bluetooth_admin_policy::kBluetoothAdminPolicyStatusInterface));
- }
- void SetServiceAllowList(const dbus::ObjectPath& object_path,
- const UUIDList& service_uuids,
- base::OnceClosure callback,
- ErrorCallback error_callback) override {
- std::vector<std::string> uuid_array;
- for (const auto& uuid : service_uuids)
- uuid_array.push_back(uuid.canonical_value());
- dbus::MethodCall method_call(
- bluetooth_admin_policy::kBluetoothAdminPolicySetInterface,
- bluetooth_admin_policy::kSetServiceAllowList);
- dbus::MessageWriter writer(&method_call);
- writer.AppendArrayOfStrings(uuid_array);
- dbus::ObjectProxy* object_proxy =
- object_manager_->GetObjectProxy(object_path);
- if (!object_proxy) {
- std::move(error_callback).Run(kUnknownAdminPolicyError, "");
- return;
- }
- object_proxy->CallMethodWithErrorCallback(
- &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
- base::BindOnce(&BluetoothAdminPolicyClientImpl::OnSuccess,
- weak_ptr_factory_.GetWeakPtr(), std::move(callback)),
- base::BindOnce(&BluetoothAdminPolicyClientImpl::OnError,
- weak_ptr_factory_.GetWeakPtr(),
- std::move(error_callback)));
- }
- protected:
- void Init(dbus::Bus* bus,
- const std::string& bluetooth_service_name) override {
- object_manager_ = bus->GetObjectManager(
- bluetooth_service_name,
- dbus::ObjectPath(
- bluetooth_object_manager::kBluetoothObjectManagerServicePath));
- object_manager_->RegisterInterface(
- bluetooth_admin_policy::kBluetoothAdminPolicyStatusInterface, this);
- }
- private:
- // Called by dbus::ObjectManager when an object with the Admin Policy
- // interface is created. Informs observers.
- void ObjectAdded(const dbus::ObjectPath& object_path,
- const std::string& interface_name) override {
- for (auto& observer : observers_)
- observer.AdminPolicyAdded(object_path);
- }
- // Called by dbus::ObjectManager when an object with the Admin Policy
- // interface is removed. Informs observers.
- void ObjectRemoved(const dbus::ObjectPath& object_path,
- const std::string& interface_name) override {
- for (auto& observer : observers_)
- observer.AdminPolicyRemoved(object_path);
- }
- // Called by BluetoothPropertySet when a property value is changed,
- // either by result of a signal or response to a GetAll() or Get()
- // call. Informs observers.
- void OnPropertyChanged(const dbus::ObjectPath& object_path,
- const std::string& property_name) {
- for (auto& observer : observers_)
- observer.AdminPolicyPropertyChanged(object_path, property_name);
- }
- // Called when a response for successful method call is received.
- void OnSuccess(base::OnceClosure callback, dbus::Response* response) {
- DCHECK(response);
- std::move(callback).Run();
- }
- // Called when a response for a failed method call is received.
- void OnError(ErrorCallback error_callback, dbus::ErrorResponse* response) {
- // Error response has optional error message argument.
- std::string error_name;
- std::string error_message;
- if (response) {
- dbus::MessageReader reader(response);
- error_name = response->GetErrorName();
- reader.PopString(&error_message);
- } else {
- error_name = kNoResponseError;
- error_message = "";
- }
- std::move(error_callback).Run(error_name, error_message);
- }
- raw_ptr<dbus::ObjectManager> object_manager_ = nullptr;
- // List of observers interested in event notifications from us.
- base::ObserverList<BluetoothAdminPolicyClient::Observer>::Unchecked
- observers_;
- // Weak pointer factory for generating 'this' pointers that might live longer
- // than we do.
- // Note: This should remain the last member so it'll be destroyed and
- // invalidate its weak pointers before any other members are destroyed.
- base::WeakPtrFactory<BluetoothAdminPolicyClientImpl> weak_ptr_factory_{this};
- };
- BluetoothAdminPolicyClient::BluetoothAdminPolicyClient() = default;
- BluetoothAdminPolicyClient::~BluetoothAdminPolicyClient() = default;
- std::unique_ptr<BluetoothAdminPolicyClient>
- BluetoothAdminPolicyClient::Create() {
- return std::make_unique<BluetoothAdminPolicyClientImpl>();
- }
- } // namespace bluez
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