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authorarmansito@chromium.org <armansito@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2014-03-31 23:36:51 +0000
committerarmansito@chromium.org <armansito@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2014-03-31 23:36:51 +0000
commitcb40265b0c3db421ff9da434284badee5e2992f0 (patch)
treea9f0db9bc9a7ccfaf149adb795b93310a6bdce8b /chromeos/dbus/bluetooth_gatt_service_service_provider.cc
parent65b852866e1d00e42f730d9a065915a3c738fe46 (diff)
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chromeos/dbus: Add service providers for Bluetooth GATT server mode.
Added D-Bus service provider classes to create and host local GATT server, characteristic, and descriptor objects. Added a client class for the remote GATT manager interface used to register local GATT service hierarchies with the Bluetooth daemon. BUG=351229 TEST=Manually tested each interface by modifying code to initialize them at init and made D-Bus calls using gdbus. R=keybuk@chromium.org Review URL: https://codereview.chromium.org/208743009 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@260705 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chromeos/dbus/bluetooth_gatt_service_service_provider.cc')
-rw-r--r--chromeos/dbus/bluetooth_gatt_service_service_provider.cc278
1 files changed, 278 insertions, 0 deletions
diff --git a/chromeos/dbus/bluetooth_gatt_service_service_provider.cc b/chromeos/dbus/bluetooth_gatt_service_service_provider.cc
new file mode 100644
index 0000000..5ea0262
--- /dev/null
+++ b/chromeos/dbus/bluetooth_gatt_service_service_provider.cc
@@ -0,0 +1,278 @@
+// 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 "chromeos/dbus/bluetooth_gatt_service_service_provider.h"
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "base/sys_info.h"
+#include "base/threading/platform_thread.h"
+#include "dbus/exported_object.h"
+#include "dbus/message.h"
+#include "third_party/cros_system_api/dbus/service_constants.h"
+
+namespace chromeos {
+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()));
+ }
+
+ virtual ~BluetoothGattServiceServiceProviderImpl() {
+ 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()) {
+ scoped_ptr<dbus::ErrorResponse> error_response =
+ dbus::ErrorResponse::FromMethodCall(
+ method_call, kErrorInvalidArgs, "Expected 'ss'.");
+ response_sender.Run(error_response.PassAs<dbus::Response>());
+ return;
+ }
+
+ // Only the GATT service interface is allowed.
+ if (interface_name !=
+ bluetooth_gatt_service::kBluetoothGattServiceInterface) {
+ scoped_ptr<dbus::ErrorResponse> error_response =
+ dbus::ErrorResponse::FromMethodCall(
+ method_call, kErrorInvalidArgs,
+ "No such interface: '" + interface_name + "'.");
+ response_sender.Run(error_response.PassAs<dbus::Response>());
+ return;
+ }
+
+ // Return error if |property_name| is unknown.
+ if (property_name != bluetooth_gatt_service::kUUIDProperty &&
+ property_name != bluetooth_gatt_service::kIncludesProperty) {
+ scoped_ptr<dbus::ErrorResponse> error_response =
+ dbus::ErrorResponse::FromMethodCall(
+ method_call, kErrorInvalidArgs,
+ "No such property: '" + property_name + "'.");
+ response_sender.Run(error_response.PassAs<dbus::Response>());
+ return;
+ }
+
+ scoped_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(response.Pass());
+ }
+
+ // 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.
+ scoped_ptr<dbus::ErrorResponse> error_response =
+ dbus::ErrorResponse::FromMethodCall(
+ method_call, kErrorPropertyReadOnly,
+ "All properties are read-only.");
+ response_sender.Run(error_response.PassAs<dbus::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()) {
+ scoped_ptr<dbus::ErrorResponse> error_response =
+ dbus::ErrorResponse::FromMethodCall(
+ method_call, kErrorInvalidArgs, "Expected 's'.");
+ response_sender.Run(error_response.PassAs<dbus::Response>());
+ return;
+ }
+
+ // Only the GATT service interface is allowed.
+ if (interface_name !=
+ bluetooth_gatt_service::kBluetoothGattServiceInterface) {
+ scoped_ptr<dbus::ErrorResponse> error_response =
+ dbus::ErrorResponse::FromMethodCall(
+ method_call, kErrorInvalidArgs,
+ "No such interface: '" + interface_name + "'.");
+ response_sender.Run(error_response.PassAs<dbus::Response>());
+ return;
+ }
+
+ scoped_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(response.Pass());
+ }
+
+ // 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 (base::SysInfo::IsRunningOnChromeOS()) {
+ return new BluetoothGattServiceServiceProviderImpl(
+ bus, object_path, uuid, includes);
+ }
+ return NULL; // TODO(armansito): Return fake here.
+}
+
+} // namespace chromeos
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