DBus changes for implementing local GATT attributes.

device/bluetooth/dbus/bluetooth_gatt_service_service_provider.cc

 // Copyright 2014 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_gatt_service_service_provider.h"
 
-#include <memory>
-#include <utility>
-
-#include "base/bind.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/platform_thread.h"
-#include "dbus/exported_object.h"
-#include "dbus/message.h"
+#include "device/bluetooth/dbus/bluetooth_gatt_service_service_provider_impl.h"
 #include "device/bluetooth/dbus/bluez_dbus_manager.h"
 #include "device/bluetooth/dbus/fake_bluetooth_gatt_service_service_provider.h"
-#include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace bluez {
-namespace {
-const char kErrorInvalidArgs[] = "org.freedesktop.DBus.Error.InvalidArgs";
-const char kErrorPropertyReadOnly[] =
-    "org.freedesktop.DBus.Error.PropertyReadOnly";
-}  // namespace
-
-// The BluetoothGattServiceServiceProvider implementation used in production.
-class BluetoothGattServiceServiceProviderImpl
-    : public BluetoothGattServiceServiceProvider {
- public:
-  BluetoothGattServiceServiceProviderImpl(
-      dbus::Bus* bus,
-      const dbus::ObjectPath& object_path,
-      const std::string& uuid,
-      const std::vector<dbus::ObjectPath>& includes)
-      : origin_thread_id_(base::PlatformThread::CurrentId()),
-        uuid_(uuid),
-        includes_(includes),
-        bus_(bus),
-        object_path_(object_path),
-        weak_ptr_factory_(this) {
-    VLOG(1) << "Creating Bluetooth GATT service: " << object_path_.value()
-            << " UUID: " << uuid;
-    DCHECK(!uuid_.empty());
-    DCHECK(object_path_.IsValid());
-    DCHECK(bus_);
-
-    exported_object_ = bus_->GetExportedObject(object_path_);
-
-    exported_object_->ExportMethod(
-        dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesGet,
-        base::Bind(&BluetoothGattServiceServiceProviderImpl::Get,
-                   weak_ptr_factory_.GetWeakPtr()),
-        base::Bind(&BluetoothGattServiceServiceProviderImpl::OnExported,
-                   weak_ptr_factory_.GetWeakPtr()));
-
-    exported_object_->ExportMethod(
-        dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesSet,
-        base::Bind(&BluetoothGattServiceServiceProviderImpl::Set,
-                   weak_ptr_factory_.GetWeakPtr()),
-        base::Bind(&BluetoothGattServiceServiceProviderImpl::OnExported,
-                   weak_ptr_factory_.GetWeakPtr()));
-
-    exported_object_->ExportMethod(
-        dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesGetAll,
-        base::Bind(&BluetoothGattServiceServiceProviderImpl::GetAll,
-                   weak_ptr_factory_.GetWeakPtr()),
-        base::Bind(&BluetoothGattServiceServiceProviderImpl::OnExported,
-                   weak_ptr_factory_.GetWeakPtr()));
-  }
-
-  ~BluetoothGattServiceServiceProviderImpl() override {
-    VLOG(1) << "Cleaning up Bluetooth GATT service: " << object_path_.value();
-    bus_->UnregisterExportedObject(object_path_);
-  }
-
- private:
-  // Returns true if the current thread is on the origin thread.
-  bool OnOriginThread() {
-    return base::PlatformThread::CurrentId() == origin_thread_id_;
-  }
-
-  // Called by dbus:: when the Bluetooth daemon fetches a single property of
-  // the service.
-  void Get(dbus::MethodCall* method_call,
-           dbus::ExportedObject::ResponseSender response_sender) {
-    VLOG(2) << "BluetoothGattServiceServiceProvider::Get: "
-            << object_path_.value();
-    DCHECK(OnOriginThread());
-
-    dbus::MessageReader reader(method_call);
-
-    std::string interface_name;
-    std::string property_name;
-    if (!reader.PopString(&interface_name) ||
-        !reader.PopString(&property_name) || reader.HasMoreData()) {
-      std::unique_ptr<dbus::ErrorResponse> error_response =
-          dbus::ErrorResponse::FromMethodCall(method_call, kErrorInvalidArgs,
-                                              "Expected 'ss'.");
-      response_sender.Run(std::move(error_response));
-      return;
-    }
-
-    // Only the GATT service interface is allowed.
-    if (interface_name !=
-        bluetooth_gatt_service::kBluetoothGattServiceInterface) {
-      std::unique_ptr<dbus::ErrorResponse> error_response =
-          dbus::ErrorResponse::FromMethodCall(
-              method_call, kErrorInvalidArgs,
-              "No such interface: '" + interface_name + "'.");
-      response_sender.Run(std::move(error_response));
-      return;
-    }
-
-    // Return error if |property_name| is unknown.
-    if (property_name != bluetooth_gatt_service::kUUIDProperty &&
-        property_name != bluetooth_gatt_service::kIncludesProperty) {
-      std::unique_ptr<dbus::ErrorResponse> error_response =
-          dbus::ErrorResponse::FromMethodCall(
-              method_call, kErrorInvalidArgs,
-              "No such property: '" + property_name + "'.");
-      response_sender.Run(std::move(error_response));
-      return;
-    }
-
-    std::unique_ptr<dbus::Response> response =
-        dbus::Response::FromMethodCall(method_call);
-    dbus::MessageWriter writer(response.get());
-    dbus::MessageWriter variant_writer(NULL);
-
-    if (property_name == bluetooth_gatt_service::kUUIDProperty) {
-      writer.OpenVariant("s", &variant_writer);
-      variant_writer.AppendString(uuid_);
-      writer.CloseContainer(&variant_writer);
-    } else {
-      writer.OpenVariant("ao", &variant_writer);
-      variant_writer.AppendArrayOfObjectPaths(includes_);
-      writer.CloseContainer(&variant_writer);
-    }
-
-    response_sender.Run(std::move(response));
-  }
-
-  // Called by dbus:: when the Bluetooth daemon sets a single property of the
-  // service.
-  void Set(dbus::MethodCall* method_call,
-           dbus::ExportedObject::ResponseSender response_sender) {
-    VLOG(2) << "BluetoothGattServiceServiceProvider::Set: "
-            << object_path_.value();
-    DCHECK(OnOriginThread());
-
-    // All of the properties on this interface are read-only, so just return
-    // error.
-    std::unique_ptr<dbus::ErrorResponse> error_response =
-        dbus::ErrorResponse::FromMethodCall(method_call, kErrorPropertyReadOnly,
-                                            "All properties are read-only.");
-    response_sender.Run(std::move(error_response));
-  }
-
-  // Called by dbus:: when the Bluetooth daemon fetches all properties of the
-  // service.
-  void GetAll(dbus::MethodCall* method_call,
-              dbus::ExportedObject::ResponseSender response_sender) {
-    VLOG(2) << "BluetoothGattServiceServiceProvider::GetAll: "
-            << object_path_.value();
-    DCHECK(OnOriginThread());
-
-    dbus::MessageReader reader(method_call);
-
-    std::string interface_name;
-    if (!reader.PopString(&interface_name) || reader.HasMoreData()) {
-      std::unique_ptr<dbus::ErrorResponse> error_response =
-          dbus::ErrorResponse::FromMethodCall(method_call, kErrorInvalidArgs,
-                                              "Expected 's'.");
-      response_sender.Run(std::move(error_response));
-      return;
-    }
-
-    // Only the GATT service interface is allowed.
-    if (interface_name !=
-        bluetooth_gatt_service::kBluetoothGattServiceInterface) {
-      std::unique_ptr<dbus::ErrorResponse> error_response =
-          dbus::ErrorResponse::FromMethodCall(
-              method_call, kErrorInvalidArgs,
-              "No such interface: '" + interface_name + "'.");
-      response_sender.Run(std::move(error_response));
-      return;
-    }
-
-    std::unique_ptr<dbus::Response> response =
-        dbus::Response::FromMethodCall(method_call);
-    dbus::MessageWriter writer(response.get());
-    dbus::MessageWriter array_writer(NULL);
-    dbus::MessageWriter dict_entry_writer(NULL);
-    dbus::MessageWriter variant_writer(NULL);
-
-    writer.OpenArray("{sv}", &array_writer);
-
-    array_writer.OpenDictEntry(&dict_entry_writer);
-    dict_entry_writer.AppendString(bluetooth_gatt_service::kUUIDProperty);
-    dict_entry_writer.AppendVariantOfString(uuid_);
-    array_writer.CloseContainer(&dict_entry_writer);
-
-    array_writer.OpenDictEntry(&dict_entry_writer);
-    dict_entry_writer.AppendString(bluetooth_gatt_service::kIncludesProperty);
-    dict_entry_writer.OpenVariant("ao", &variant_writer);
-    variant_writer.AppendArrayOfObjectPaths(includes_);
-    dict_entry_writer.CloseContainer(&variant_writer);
-    array_writer.CloseContainer(&dict_entry_writer);
-
-    writer.CloseContainer(&array_writer);
-
-    response_sender.Run(std::move(response));
-  }
-
-  // Called by dbus:: when a method is exported.
-  void OnExported(const std::string& interface_name,
-                  const std::string& method_name,
-                  bool success) {
-    LOG_IF(WARNING, !success) << "Failed to export " << interface_name << "."
-                              << method_name;
-  }
-
-  // Origin thread (i.e. the UI thread in production).
-  base::PlatformThreadId origin_thread_id_;
-
-  // 128-bit service UUID of this object.
-  std::string uuid_;
-
-  // List of object paths that represent other exported GATT services that are
-  // included from this service.
-  std::vector<dbus::ObjectPath> includes_;
-
-  // D-Bus bus object is exported on, not owned by this object and must
-  // outlive it.
-  dbus::Bus* bus_;
-
-  // D-Bus object path of object we are exporting, kept so we can unregister
-  // again in our destructor.
-  dbus::ObjectPath object_path_;
-
-  // D-Bus object we are exporting, owned by this object.
-  scoped_refptr<dbus::ExportedObject> exported_object_;
-
-  // 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<BluetoothGattServiceServiceProviderImpl>
-      weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(BluetoothGattServiceServiceProviderImpl);
-};
 
 BluetoothGattServiceServiceProvider::BluetoothGattServiceServiceProvider() {}
 
 BluetoothGattServiceServiceProvider::~BluetoothGattServiceServiceProvider() {}
 
 // static
 BluetoothGattServiceServiceProvider*
 BluetoothGattServiceServiceProvider::Create(
     dbus::Bus* bus,
     const dbus::ObjectPath& object_path,
     const std::string& uuid,
     const std::vector<dbus::ObjectPath>& includes) {
   if (!bluez::BluezDBusManager::Get()->IsUsingFakes()) {
     return new BluetoothGattServiceServiceProviderImpl(bus, object_path, uuid,
                                                        includes);
   }
   return new FakeBluetoothGattServiceServiceProvider(object_path, uuid,
                                                      includes);
 }
 
 }  // namespace bluez