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// 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/bluetooth_remote_gatt_service_bluez.h"
#include "base/logging.h"
#include "base/strings/stringprintf.h"
#include "device/bluetooth/bluetooth_adapter_bluez.h"
#include "device/bluetooth/bluetooth_device_bluez.h"
#include "device/bluetooth/bluetooth_remote_gatt_characteristic_bluez.h"
#include "device/bluetooth/bluetooth_remote_gatt_descriptor_bluez.h"
#include "device/bluetooth/dbus/bluetooth_gatt_service_client.h"
#include "device/bluetooth/dbus/bluez_dbus_manager.h"
namespace bluez {
namespace {
// TODO(jamuraa) move these to cros_system_api later
const char kErrorFailed[] = "org.bluez.Error.Failed";
const char kErrorInProgress[] = "org.bluez.Error.InProgress";
const char kErrorInvalidValueLength[] = "org.bluez.Error.InvalidValueLength";
const char kErrorNotAuthorized[] = "org.bluez.Error.NotAuthorized";
const char kErrorNotPaired[] = "org.bluez.Error.NotPaired";
const char kErrorNotSupported[] = "org.bluez.Error.NotSupported";
const char kErrorNotPermitted[] = "org.bluez.Error.NotPermitted";
} // namespace
BluetoothRemoteGattServiceBlueZ::BluetoothRemoteGattServiceBlueZ(
BluetoothAdapterBlueZ* adapter,
BluetoothDeviceBlueZ* device,
const dbus::ObjectPath& object_path)
: object_path_(object_path),
adapter_(adapter),
device_(device),
discovery_complete_(false),
weak_ptr_factory_(this) {
VLOG(1) << "Creating remote GATT service with identifier: "
<< object_path.value() << ", UUID: " << GetUUID().canonical_value();
DCHECK(adapter_);
bluez::BluezDBusManager::Get()->GetBluetoothGattServiceClient()->AddObserver(
this);
bluez::BluezDBusManager::Get()
->GetBluetoothGattCharacteristicClient()
->AddObserver(this);
// Add all known GATT characteristics.
const std::vector<dbus::ObjectPath>& gatt_chars =
bluez::BluezDBusManager::Get()
->GetBluetoothGattCharacteristicClient()
->GetCharacteristics();
for (std::vector<dbus::ObjectPath>::const_iterator iter = gatt_chars.begin();
iter != gatt_chars.end(); ++iter)
GattCharacteristicAdded(*iter);
}
BluetoothRemoteGattServiceBlueZ::~BluetoothRemoteGattServiceBlueZ() {
bluez::BluezDBusManager::Get()
->GetBluetoothGattServiceClient()
->RemoveObserver(this);
bluez::BluezDBusManager::Get()
->GetBluetoothGattCharacteristicClient()
->RemoveObserver(this);
// Clean up all the characteristics. Copy the characteristics list here and
// clear the original so that when we send GattCharacteristicRemoved(),
// GetCharacteristics() returns no characteristics.
CharacteristicMap characteristics = characteristics_;
characteristics_.clear();
for (CharacteristicMap::iterator iter = characteristics.begin();
iter != characteristics.end(); ++iter) {
DCHECK(adapter_);
adapter_->NotifyGattCharacteristicRemoved(iter->second);
delete iter->second;
}
}
std::string BluetoothRemoteGattServiceBlueZ::GetIdentifier() const {
return object_path_.value();
}
device::BluetoothUUID BluetoothRemoteGattServiceBlueZ::GetUUID() const {
bluez::BluetoothGattServiceClient::Properties* properties =
bluez::BluezDBusManager::Get()
->GetBluetoothGattServiceClient()
->GetProperties(object_path_);
DCHECK(properties);
return device::BluetoothUUID(properties->uuid.value());
}
bool BluetoothRemoteGattServiceBlueZ::IsLocal() const {
return false;
}
bool BluetoothRemoteGattServiceBlueZ::IsPrimary() const {
bluez::BluetoothGattServiceClient::Properties* properties =
bluez::BluezDBusManager::Get()
->GetBluetoothGattServiceClient()
->GetProperties(object_path_);
DCHECK(properties);
return properties->primary.value();
}
device::BluetoothDevice* BluetoothRemoteGattServiceBlueZ::GetDevice() const {
return device_;
}
std::vector<device::BluetoothGattCharacteristic*>
BluetoothRemoteGattServiceBlueZ::GetCharacteristics() const {
std::vector<device::BluetoothGattCharacteristic*> characteristics;
for (CharacteristicMap::const_iterator iter = characteristics_.begin();
iter != characteristics_.end(); ++iter) {
characteristics.push_back(iter->second);
}
return characteristics;
}
std::vector<device::BluetoothGattService*>
BluetoothRemoteGattServiceBlueZ::GetIncludedServices() const {
// TODO(armansito): Return the actual included services here.
return std::vector<device::BluetoothGattService*>();
}
device::BluetoothGattCharacteristic*
BluetoothRemoteGattServiceBlueZ::GetCharacteristic(
const std::string& identifier) const {
CharacteristicMap::const_iterator iter =
characteristics_.find(dbus::ObjectPath(identifier));
if (iter == characteristics_.end())
return NULL;
return iter->second;
}
bool BluetoothRemoteGattServiceBlueZ::AddCharacteristic(
device::BluetoothGattCharacteristic* characteristic) {
VLOG(1) << "Characteristics cannot be added to a remote GATT service.";
return false;
}
bool BluetoothRemoteGattServiceBlueZ::AddIncludedService(
device::BluetoothGattService* service) {
VLOG(1) << "Included services cannot be added to a remote GATT service.";
return false;
}
void BluetoothRemoteGattServiceBlueZ::Register(
const base::Closure& callback,
const ErrorCallback& error_callback) {
VLOG(1) << "A remote GATT service cannot be registered.";
error_callback.Run();
}
void BluetoothRemoteGattServiceBlueZ::Unregister(
const base::Closure& callback,
const ErrorCallback& error_callback) {
VLOG(1) << "A remote GATT service cannot be unregistered.";
error_callback.Run();
}
// static
device::BluetoothGattService::GattErrorCode
BluetoothRemoteGattServiceBlueZ::DBusErrorToServiceError(
std::string error_name) {
device::BluetoothGattService::GattErrorCode code = GATT_ERROR_UNKNOWN;
if (error_name == kErrorFailed) {
code = GATT_ERROR_FAILED;
} else if (error_name == kErrorInProgress) {
code = GATT_ERROR_IN_PROGRESS;
} else if (error_name == kErrorInvalidValueLength) {
code = GATT_ERROR_INVALID_LENGTH;
} else if (error_name == kErrorNotPermitted) {
code = GATT_ERROR_NOT_PERMITTED;
} else if (error_name == kErrorNotAuthorized) {
code = GATT_ERROR_NOT_AUTHORIZED;
} else if (error_name == kErrorNotPaired) {
code = GATT_ERROR_NOT_PAIRED;
} else if (error_name == kErrorNotSupported) {
code = GATT_ERROR_NOT_SUPPORTED;
}
return code;
}
BluetoothAdapterBlueZ* BluetoothRemoteGattServiceBlueZ::GetAdapter() const {
return adapter_;
}
void BluetoothRemoteGattServiceBlueZ::NotifyServiceChanged() {
// Don't send service changed unless we know that all characteristics have
// already been discovered. This is to prevent spammy events before sending
// out the first Gatt
if (!discovery_complete_)
return;
DCHECK(adapter_);
adapter_->NotifyGattServiceChanged(this);
}
void BluetoothRemoteGattServiceBlueZ::NotifyDescriptorAddedOrRemoved(
BluetoothRemoteGattCharacteristicBlueZ* characteristic,
BluetoothRemoteGattDescriptorBlueZ* descriptor,
bool added) {
DCHECK(characteristic->GetService() == this);
DCHECK(descriptor->GetCharacteristic() == characteristic);
DCHECK(adapter_);
if (added) {
adapter_->NotifyGattDescriptorAdded(descriptor);
return;
}
adapter_->NotifyGattDescriptorRemoved(descriptor);
}
void BluetoothRemoteGattServiceBlueZ::NotifyDescriptorValueChanged(
BluetoothRemoteGattCharacteristicBlueZ* characteristic,
BluetoothRemoteGattDescriptorBlueZ* descriptor,
const std::vector<uint8>& value) {
DCHECK(characteristic->GetService() == this);
DCHECK(descriptor->GetCharacteristic() == characteristic);
DCHECK(adapter_);
adapter_->NotifyGattDescriptorValueChanged(descriptor, value);
}
void BluetoothRemoteGattServiceBlueZ::GattServicePropertyChanged(
const dbus::ObjectPath& object_path,
const std::string& property_name) {
if (object_path != object_path_)
return;
VLOG(1) << "Service property changed: \"" << property_name << "\", "
<< object_path.value();
bluez::BluetoothGattServiceClient::Properties* properties =
bluez::BluezDBusManager::Get()
->GetBluetoothGattServiceClient()
->GetProperties(object_path);
DCHECK(properties);
if (property_name != properties->characteristics.name()) {
NotifyServiceChanged();
return;
}
if (discovery_complete_)
return;
VLOG(1) << "All characteristics were discovered for service: "
<< object_path.value();
discovery_complete_ = true;
DCHECK(adapter_);
adapter_->NotifyGattDiscoveryComplete(this);
}
void BluetoothRemoteGattServiceBlueZ::GattCharacteristicAdded(
const dbus::ObjectPath& object_path) {
if (characteristics_.find(object_path) != characteristics_.end()) {
VLOG(1) << "Remote GATT characteristic already exists: "
<< object_path.value();
return;
}
bluez::BluetoothGattCharacteristicClient::Properties* properties =
bluez::BluezDBusManager::Get()
->GetBluetoothGattCharacteristicClient()
->GetProperties(object_path);
DCHECK(properties);
if (properties->service.value() != object_path_) {
VLOG(2) << "Remote GATT characteristic does not belong to this service.";
return;
}
VLOG(1) << "Adding new remote GATT characteristic for GATT service: "
<< GetIdentifier() << ", UUID: " << GetUUID().canonical_value();
BluetoothRemoteGattCharacteristicBlueZ* characteristic =
new BluetoothRemoteGattCharacteristicBlueZ(this, object_path);
characteristics_[object_path] = characteristic;
DCHECK(characteristic->GetIdentifier() == object_path.value());
DCHECK(characteristic->GetUUID().IsValid());
DCHECK(adapter_);
adapter_->NotifyGattCharacteristicAdded(characteristic);
}
void BluetoothRemoteGattServiceBlueZ::GattCharacteristicRemoved(
const dbus::ObjectPath& object_path) {
CharacteristicMap::iterator iter = characteristics_.find(object_path);
if (iter == characteristics_.end()) {
VLOG(2) << "Unknown GATT characteristic removed: " << object_path.value();
return;
}
VLOG(1) << "Removing remote GATT characteristic from service: "
<< GetIdentifier() << ", UUID: " << GetUUID().canonical_value();
BluetoothRemoteGattCharacteristicBlueZ* characteristic = iter->second;
DCHECK(characteristic->object_path() == object_path);
characteristics_.erase(iter);
DCHECK(adapter_);
adapter_->NotifyGattCharacteristicRemoved(characteristic);
delete characteristic;
}
void BluetoothRemoteGattServiceBlueZ::GattCharacteristicPropertyChanged(
const dbus::ObjectPath& object_path,
const std::string& property_name) {
CharacteristicMap::iterator iter = characteristics_.find(object_path);
if (iter == characteristics_.end()) {
VLOG(3) << "Properties of unknown characteristic changed";
return;
}
// We may receive a property changed event in certain cases, e.g. when the
// characteristic "Flags" property has been updated with values from the
// "Characteristic Extended Properties" descriptor. In this case, kick off
// a service changed observer event to let observers refresh the
// characteristics.
bluez::BluetoothGattCharacteristicClient::Properties* properties =
bluez::BluezDBusManager::Get()
->GetBluetoothGattCharacteristicClient()
->GetProperties(object_path);
DCHECK(properties);
DCHECK(adapter_);
if (property_name == properties->flags.name())
NotifyServiceChanged();
else if (property_name == properties->value.name())
adapter_->NotifyGattCharacteristicValueChanged(iter->second,
properties->value.value());
}
} // namespace bluez
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