//
// Copyright (C) 2015 Google, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "service/ipc/binder/bluetooth_gatt_server_binder_server.h"
#include <base/logging.h>
#include "service/adapter.h"
namespace ipc {
namespace binder {
namespace {
const int kInvalidInstanceId = -1;
} // namespace
BluetoothGattServerBinderServer::BluetoothGattServerBinderServer(
bluetooth::Adapter* adapter) : adapter_(adapter) {
CHECK(adapter_);
}
bool BluetoothGattServerBinderServer::RegisterServer(
const android::sp<IBluetoothGattServerCallback>& callback) {
VLOG(2) << __func__;
bluetooth::GattServerFactory* gatt_server_factory =
adapter_->GetGattServerFactory();
return RegisterInstanceBase(callback, gatt_server_factory);
}
void BluetoothGattServerBinderServer::UnregisterServer(int server_id) {
VLOG(2) << __func__;
UnregisterInstanceBase(server_id);
}
void BluetoothGattServerBinderServer::UnregisterAll() {
VLOG(2) << __func__;
UnregisterAllBase();
}
bool BluetoothGattServerBinderServer::BeginServiceDeclaration(
int server_id, bool is_primary, const bluetooth::UUID& uuid,
std::unique_ptr<bluetooth::GattIdentifier>* out_id) {
VLOG(2) << __func__;
CHECK(out_id);
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_server = GetGattServer(server_id);
if (!gatt_server) {
LOG(ERROR) << "Unknown server_id: " << server_id;
return false;
}
auto service_id = gatt_server->BeginServiceDeclaration(uuid, is_primary);
if (!service_id) {
LOG(ERROR) << "Failed to begin service declaration - server_id: "
<< server_id << " UUID: " << uuid.ToString();
return false;
}
out_id->swap(service_id);
return true;
}
bool BluetoothGattServerBinderServer::AddCharacteristic(
int server_id, const bluetooth::UUID& uuid,
int properties, int permissions,
std::unique_ptr<bluetooth::GattIdentifier>* out_id) {
VLOG(2) << __func__;
CHECK(out_id);
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_server = GetGattServer(server_id);
if (!gatt_server) {
LOG(ERROR) << "Unknown server_id: " << server_id;
return false;
}
auto char_id = gatt_server->AddCharacteristic(uuid, properties, permissions);
if (!char_id) {
LOG(ERROR) << "Failed to add characteristic - server_id: "
<< server_id << " UUID: " << uuid.ToString();
return false;
}
out_id->swap(char_id);
return true;
}
bool BluetoothGattServerBinderServer::AddDescriptor(
int server_id, const bluetooth::UUID& uuid, int permissions,
std::unique_ptr<bluetooth::GattIdentifier>* out_id) {
VLOG(2) << __func__;
CHECK(out_id);
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_server = GetGattServer(server_id);
if (!gatt_server) {
LOG(ERROR) << "Unknown server_id: " << server_id;
return false;
}
auto desc_id = gatt_server->AddDescriptor(uuid, permissions);
if (!desc_id) {
LOG(ERROR) << "Failed to add descriptor - server_id: "
<< server_id << " UUID: " << uuid.ToString();
return false;
}
out_id->swap(desc_id);
return true;
}
bool BluetoothGattServerBinderServer::EndServiceDeclaration(int server_id) {
VLOG(2) << __func__;
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_server = GetGattServer(server_id);
if (!gatt_server) {
LOG(ERROR) << "Unknown server_id: " << server_id;
return false;
}
// Create a weak pointer and pass that to the callback to prevent a potential
// use after free.
android::wp<BluetoothGattServerBinderServer> weak_ptr_to_this(this);
auto callback = [=](
bluetooth::BLEStatus status,
const bluetooth::GattIdentifier& service_id) {
auto sp_to_this = weak_ptr_to_this.promote();
if (!sp_to_this.get()) {
VLOG(2) << "BluetoothLowEnergyBinderServer was deleted";
return;
}
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_cb = GetGattServerCallback(server_id);
if (!gatt_cb.get()) {
VLOG(2) << "The callback was deleted";
return;
}
gatt_cb->OnServiceAdded(status, service_id);
};
if (!gatt_server->EndServiceDeclaration(callback)) {
LOG(ERROR) << "Failed to end service declaration";
return false;
}
return true;
}
bool BluetoothGattServerBinderServer::SendResponse(
int server_id, const std::string& device_address,
int request_id, int status, int offset,
const std::vector<uint8_t>& value) {
VLOG(2) << __func__;
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_server = GetGattServer(server_id);
if (!gatt_server) {
LOG(ERROR) << "Unknown server_id: " << server_id;
return false;
}
return gatt_server->SendResponse(
device_address, request_id, static_cast<bluetooth::GATTError>(status),
offset, value);
}
bool BluetoothGattServerBinderServer::SendNotification(
int server_id,
const std::string& device_address,
const bluetooth::GattIdentifier& characteristic_id,
bool confirm,
const std::vector<uint8_t>& value) {
VLOG(2) << __func__;
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_server = GetGattServer(server_id);
if (!gatt_server) {
LOG(ERROR) << "Unknown server_id: " << server_id;
return false;
}
// Create a weak pointer and pass that to the callback to prevent a potential
// use after free.
android::wp<BluetoothGattServerBinderServer> weak_ptr_to_this(this);
auto callback = [=](bluetooth::GATTError error) {
auto sp_to_this = weak_ptr_to_this.promote();
if (!sp_to_this.get()) {
VLOG(2) << "BluetoothLowEnergyBinderServer was deleted";
return;
}
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_cb = GetGattServerCallback(server_id);
if (!gatt_cb.get()) {
VLOG(2) << "The callback was deleted";
return;
}
gatt_cb->OnNotificationSent(device_address, error);
};
if (!gatt_server->SendNotification(device_address, characteristic_id,
confirm, value, callback)) {
LOG(ERROR) << "Failed to send notification";
return false;
}
return true;
}
void BluetoothGattServerBinderServer::OnCharacteristicReadRequest(
bluetooth::GattServer* gatt_server,
const std::string& device_address,
int request_id, int offset, bool is_long,
const bluetooth::GattIdentifier& characteristic_id) {
VLOG(2) << __func__;
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_cb = GetGattServerCallback(gatt_server->GetInstanceId());
if (!gatt_cb.get()) {
LOG(WARNING) << "Callback for this GattServer was deleted.";
return;
}
gatt_cb->OnCharacteristicReadRequest(
device_address, request_id, offset, is_long, characteristic_id);
}
void BluetoothGattServerBinderServer::OnDescriptorReadRequest(
bluetooth::GattServer* gatt_server,
const std::string& device_address,
int request_id, int offset, bool is_long,
const bluetooth::GattIdentifier& descriptor_id) {
VLOG(2) << __func__;
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_cb = GetGattServerCallback(gatt_server->GetInstanceId());
if (!gatt_cb.get()) {
LOG(WARNING) << "Callback for this GattServer was deleted.";
return;
}
gatt_cb->OnDescriptorReadRequest(
device_address, request_id, offset, is_long, descriptor_id);
}
android::sp<IBluetoothGattServerCallback>
BluetoothGattServerBinderServer::GetGattServerCallback(int server_id) {
auto cb = GetCallback(server_id);
return android::sp<IBluetoothGattServerCallback>(
static_cast<IBluetoothGattServerCallback*>(cb.get()));
}
std::shared_ptr<bluetooth::GattServer>
BluetoothGattServerBinderServer::GetGattServer(int server_id) {
return std::static_pointer_cast<bluetooth::GattServer>(
GetInstance(server_id));
}
void BluetoothGattServerBinderServer::OnRegisterInstanceImpl(
bluetooth::BLEStatus status,
android::sp<IInterface> callback,
bluetooth::BluetoothInstance* instance) {
VLOG(1) << __func__ << " instance ID: " << instance->GetInstanceId()
<< " status: " << status;
bluetooth::GattServer* gatt_server =
static_cast<bluetooth::GattServer*>(instance);
gatt_server->SetDelegate(this);
android::sp<IBluetoothGattServerCallback> cb(
static_cast<IBluetoothGattServerCallback*>(callback.get()));
cb->OnServerRegistered(
status,
(status == bluetooth::BLE_STATUS_SUCCESS) ?
instance->GetInstanceId() : kInvalidInstanceId);
}
void BluetoothGattServerBinderServer::OnCharacteristicWriteRequest(
bluetooth::GattServer* gatt_server,
const std::string& device_address,
int request_id, int offset, bool is_prepare_write, bool need_response,
const std::vector<uint8_t>& value,
const bluetooth::GattIdentifier& characteristic_id) {
VLOG(2) << __func__;
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_cb = GetGattServerCallback(gatt_server->GetInstanceId());
if (!gatt_cb.get()) {
LOG(WARNING) << "Callback for this GattServer was deleted.";
return;
}
gatt_cb->OnCharacteristicWriteRequest(
device_address, request_id, offset, is_prepare_write, need_response,
value, characteristic_id);
}
void BluetoothGattServerBinderServer::OnDescriptorWriteRequest(
bluetooth::GattServer* gatt_server,
const std::string& device_address,
int request_id, int offset, bool is_prepare_write, bool need_response,
const std::vector<uint8_t>& value,
const bluetooth::GattIdentifier& descriptor_id) {
VLOG(2) << __func__;
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_cb = GetGattServerCallback(gatt_server->GetInstanceId());
if (!gatt_cb.get()) {
LOG(WARNING) << "Callback for this GattServer was deleted.";
return;
}
gatt_cb->OnDescriptorWriteRequest(
device_address, request_id, offset, is_prepare_write, need_response,
value, descriptor_id);
}
void BluetoothGattServerBinderServer::OnExecuteWriteRequest(
bluetooth::GattServer* gatt_server,
const std::string& device_address,
int request_id, bool is_execute) {
VLOG(2) << __func__;
std::lock_guard<std::mutex> lock(*maps_lock());
auto gatt_cb = GetGattServerCallback(gatt_server->GetInstanceId());
if (!gatt_cb.get()) {
LOG(WARNING) << "Callback for this GattServer was deleted.";
return;
}
gatt_cb->OnExecuteWriteRequest(device_address, request_id, is_execute);
}
} // namespace binder
} // namespace ipc