Export Read/WriteValue from the GATT characteristic service provider.

device/bluetooth/dbus/bluetooth_gatt_characteristic_service_provider_impl.cc

 // Copyright 2016 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_characteristic_service_provider_impl.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 32 matching lines @@
   DCHECK(bus_);
   DCHECK(delegate_);
   DCHECK(!uuid_.empty());
   DCHECK(object_path_.IsValid());
   DCHECK(service_path_.IsValid());
   DCHECK(base::StartsWith(object_path_.value(), service_path_.value() + "/",
                           base::CompareCase::SENSITIVE));
 
   exported_object_ = bus_->GetExportedObject(object_path_);
 
+  // org.freedesktop.DBus.Properties interface:
   exported_object_->ExportMethod(
       dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesGet,
       base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::Get,
                  weak_ptr_factory_.GetWeakPtr()),
       base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
                  weak_ptr_factory_.GetWeakPtr()));
-
   exported_object_->ExportMethod(
       dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesSet,
       base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::Set,
                  weak_ptr_factory_.GetWeakPtr()),
       base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
                  weak_ptr_factory_.GetWeakPtr()));
-
   exported_object_->ExportMethod(
       dbus::kDBusPropertiesInterface, dbus::kDBusPropertiesGetAll,
       base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::GetAll,
                  weak_ptr_factory_.GetWeakPtr()),
       base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
                  weak_ptr_factory_.GetWeakPtr()));
+
+  // org.bluez.GattCharacteristic1 interface:
+  exported_object_->ExportMethod(
+      bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface,
+      bluetooth_gatt_characteristic::kReadValue,
+      base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::ReadValue,
+                 weak_ptr_factory_.GetWeakPtr()),
+      base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
+                 weak_ptr_factory_.GetWeakPtr()));
+  exported_object_->ExportMethod(
+      bluetooth_gatt_characteristic::kBluetoothGattCharacteristicInterface,
+      bluetooth_gatt_characteristic::kWriteValue,
+      base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::WriteValue,
+                 weak_ptr_factory_.GetWeakPtr()),
+      base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnExported,
+                 weak_ptr_factory_.GetWeakPtr()));
 }
 
 BluetoothGattCharacteristicServiceProviderImpl::
     ~BluetoothGattCharacteristicServiceProviderImpl() {
   VLOG(1) << "Cleaning up Bluetooth GATT characteristic: "
           << object_path_.value();
   if (bus_)
     bus_->UnregisterExportedObject(object_path_);
 }
 
@@ skipping 219 matching lines @@
   // Try to obtain the value from the delegate. We will construct the
   // response in the success callback.
   DCHECK(delegate_);
   delegate_->GetValue(
       base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnGetAll,
                  weak_ptr_factory_.GetWeakPtr(), method_call, response_sender),
       base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnFailure,
                  weak_ptr_factory_.GetWeakPtr(), method_call, response_sender));
 }
 
+void BluetoothGattCharacteristicServiceProviderImpl::ReadValue(
+    dbus::MethodCall* method_call,
+    dbus::ExportedObject::ResponseSender response_sender) {
+  VLOG(3) << "BluetoothGattCharacteristicServiceProvider::ReadValue: "
+          << object_path_.value();
+  DCHECK(OnOriginThread());
+  DCHECK(delegate_);
+  delegate_->GetValue(
+      base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnReadValue,
+                 weak_ptr_factory_.GetWeakPtr(), method_call, response_sender),
+      base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnFailure,
+                 weak_ptr_factory_.GetWeakPtr(), method_call, response_sender));
+}
+
+void BluetoothGattCharacteristicServiceProviderImpl::WriteValue(
+    dbus::MethodCall* method_call,
+    dbus::ExportedObject::ResponseSender response_sender) {
+  VLOG(3) << "BluetoothGattCharacteristicServiceProvider::WriteValue: "
+          << object_path_.value();
+  DCHECK(OnOriginThread());
+
+  dbus::MessageReader reader(method_call);
+  const uint8_t* bytes = NULL;
+  size_t length = 0;
+
+  if (!reader.PopArrayOfBytes(&bytes, &length))
+    VLOG(2) << "Error reading array of bytes in in WriteValue";
+  std::vector<uint8_t> value;
+  if (bytes)
+    value.assign(bytes, bytes + length);
+
+  DCHECK(delegate_);
+  delegate_->SetValue(
+      value,
+      base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnWriteValue,
+                 weak_ptr_factory_.GetWeakPtr(), method_call, response_sender),
+      base::Bind(&BluetoothGattCharacteristicServiceProviderImpl::OnFailure,
+                 weak_ptr_factory_.GetWeakPtr(), method_call, response_sender));
+}
+
 void BluetoothGattCharacteristicServiceProviderImpl::OnExported(
     const std::string& interface_name,
     const std::string& method_name,
     bool success) {
   LOG_IF(WARNING, !success) << "Failed to export " << interface_name << "."
                             << method_name;
 }
 
 void BluetoothGattCharacteristicServiceProviderImpl::OnGetAll(
     dbus::MethodCall* method_call,
     dbus::ExportedObject::ResponseSender response_sender,
     const std::vector<uint8_t>& value) {
   VLOG(2) << "Characteristic value obtained from delegate. Responding to "
           << "GetAll.";
 
   std::unique_ptr<dbus::Response> response =
       dbus::Response::FromMethodCall(method_call);
   dbus::MessageWriter writer(response.get());
   WriteProperties(&writer, &value);
   response_sender.Run(std::move(response));
 }
 
+void BluetoothGattCharacteristicServiceProviderImpl::OnReadValue(
+    dbus::MethodCall* method_call,
+    dbus::ExportedObject::ResponseSender response_sender,
+    const std::vector<uint8_t>& value) {
+  VLOG(3) << "Characteristic value obtained from delegate. Responding to "
+             "ReadValue.";
+
+  std::unique_ptr<dbus::Response> response =
+      dbus::Response::FromMethodCall(method_call);
+  dbus::MessageWriter writer(response.get());
+  writer.AppendArrayOfBytes(value.data(), value.size());
+  response_sender.Run(std::move(response));
+}
+
+void BluetoothGattCharacteristicServiceProviderImpl::OnWriteValue(
+    dbus::MethodCall* method_call,
+    dbus::ExportedObject::ResponseSender response_sender) {
+  VLOG(3) << "Responding to WriteValue.";
+
+  std::unique_ptr<dbus::Response> response =
+      dbus::Response::FromMethodCall(method_call);
+  response_sender.Run(std::move(response));
+}
+
 void BluetoothGattCharacteristicServiceProviderImpl::WriteProperties(
     dbus::MessageWriter* writer,
     const std::vector<uint8_t>* value) {
   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);
@@ skipping 55 matching lines @@
           method_call, kErrorFailed, "Failed to get/set characteristic value.");
   response_sender.Run(std::move(error_response));
 }
 
 const dbus::ObjectPath&
 BluetoothGattCharacteristicServiceProviderImpl::object_path() const {
   return object_path_;
 }
 
 }  // namespace bluez