1 files changed, 272 insertions, 0 deletions
diff --git a/device/bluetooth/dbus/bluetooth_gatt_service_service_provider.cc b/device/bluetooth/dbus/bluetooth_gatt_service_service_provider.cc
new file mode 100644
index 0000000..06b6827
--- /dev/null
+++ b/device/bluetooth/dbus/bluetooth_gatt_service_service_provider.cc
@@ -0,0 +1,272 @@
+// 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 "base/bind.h"
+#include "base/logging.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/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()) {
+      scoped_ptr<dbus::ErrorResponse> error_response =
+          dbus::ErrorResponse::FromMethodCall(method_call, kErrorInvalidArgs,
+                                              "Expected 'ss'.");
+      response_sender.Run(error_response.Pass());
+      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.Pass());
+      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.Pass());
+      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.Pass());
+  }
+
+  // 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.Pass());
+      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.Pass());
+      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 (!bluez::BluezDBusManager::Get()->IsUsingStub()) {
+    return new BluetoothGattServiceServiceProviderImpl(bus, object_path, uuid,
+                                                       includes);
+  }
+  return new FakeBluetoothGattServiceServiceProvider(object_path, uuid,
+                                                     includes);
+}
+
+}  // namespace bluez