| // 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_characteristic_chromeos.h" |
| |
| #include "base/logging.h" |
| #include "base/strings/stringprintf.h" |
| #include "chromeos/dbus/bluetooth_gatt_characteristic_client.h" |
| #include "chromeos/dbus/dbus_thread_manager.h" |
| #include "device/bluetooth/bluetooth_remote_gatt_descriptor_chromeos.h" |
| #include "device/bluetooth/bluetooth_remote_gatt_service_chromeos.h" |
| |
| namespace chromeos { |
| |
| namespace { |
| |
| // Stream operator for logging vector<uint8>. |
| std::ostream& operator<<(std::ostream& out, const std::vector<uint8> bytes) { |
| out << "["; |
| for (std::vector<uint8>::const_iterator iter = bytes.begin(); |
| iter != bytes.end(); ++iter) { |
| out << base::StringPrintf("%02X", *iter); |
| } |
| return out << "]"; |
| } |
| |
| } // namespace |
| |
| BluetoothRemoteGattCharacteristicChromeOS:: |
| BluetoothRemoteGattCharacteristicChromeOS( |
| BluetoothRemoteGattServiceChromeOS* service, |
| const dbus::ObjectPath& object_path) |
| : object_path_(object_path), |
| service_(service), |
| weak_ptr_factory_(this) { |
| VLOG(1) << "Creating remote GATT characteristic with identifier: " |
| << GetIdentifier() << ", UUID: " << GetUUID().canonical_value(); |
| DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()-> |
| AddObserver(this); |
| |
| // Add all known GATT characteristic descriptors. |
| const std::vector<dbus::ObjectPath>& gatt_descs = |
| DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()-> |
| GetDescriptors(); |
| for (std::vector<dbus::ObjectPath>::const_iterator iter = gatt_descs.begin(); |
| iter != gatt_descs.end(); ++iter) |
| GattDescriptorAdded(*iter); |
| } |
| |
| BluetoothRemoteGattCharacteristicChromeOS:: |
| ~BluetoothRemoteGattCharacteristicChromeOS() { |
| DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()-> |
| RemoveObserver(this); |
| |
| // Clean up all the descriptors. There isn't much point in notifying service |
| // observers for each descriptor that gets removed, so just delete them. |
| for (DescriptorMap::iterator iter = descriptors_.begin(); |
| iter != descriptors_.end(); ++iter) |
| delete iter->second; |
| } |
| |
| std::string BluetoothRemoteGattCharacteristicChromeOS::GetIdentifier() const { |
| return object_path_.value(); |
| } |
| |
| device::BluetoothUUID |
| BluetoothRemoteGattCharacteristicChromeOS::GetUUID() const { |
| BluetoothGattCharacteristicClient::Properties* properties = |
| DBusThreadManager::Get()->GetBluetoothGattCharacteristicClient()-> |
| GetProperties(object_path_); |
| DCHECK(properties); |
| return device::BluetoothUUID(properties->uuid.value()); |
| } |
| |
| bool BluetoothRemoteGattCharacteristicChromeOS::IsLocal() const { |
| return false; |
| } |
| |
| const std::vector<uint8>& |
| BluetoothRemoteGattCharacteristicChromeOS::GetValue() const { |
| BluetoothGattCharacteristicClient::Properties* properties = |
| DBusThreadManager::Get()->GetBluetoothGattCharacteristicClient()-> |
| GetProperties(object_path_); |
| DCHECK(properties); |
| return properties->value.value(); |
| } |
| |
| device::BluetoothGattService* |
| BluetoothRemoteGattCharacteristicChromeOS::GetService() const { |
| return service_; |
| } |
| |
| device::BluetoothGattCharacteristic::Properties |
| BluetoothRemoteGattCharacteristicChromeOS::GetProperties() const { |
| // TODO(armansito): Once BlueZ implements properties properly, return those |
| // values here. |
| return kPropertyNone; |
| } |
| |
| device::BluetoothGattCharacteristic::Permissions |
| BluetoothRemoteGattCharacteristicChromeOS::GetPermissions() const { |
| // TODO(armansito): Once BlueZ defines the permissions, return the correct |
| // values here. |
| return kPermissionNone; |
| } |
| |
| std::vector<device::BluetoothGattDescriptor*> |
| BluetoothRemoteGattCharacteristicChromeOS::GetDescriptors() const { |
| std::vector<device::BluetoothGattDescriptor*> descriptors; |
| for (DescriptorMap::const_iterator iter = descriptors_.begin(); |
| iter != descriptors_.end(); ++iter) |
| descriptors.push_back(iter->second); |
| return descriptors; |
| } |
| |
| device::BluetoothGattDescriptor* |
| BluetoothRemoteGattCharacteristicChromeOS::GetDescriptor( |
| const std::string& identifier) const { |
| DescriptorMap::const_iterator iter = |
| descriptors_.find(dbus::ObjectPath(identifier)); |
| if (iter == descriptors_.end()) |
| return NULL; |
| return iter->second; |
| } |
| |
| bool BluetoothRemoteGattCharacteristicChromeOS::AddDescriptor( |
| device::BluetoothGattDescriptor* descriptor) { |
| VLOG(1) << "Descriptors cannot be added to a remote GATT characteristic."; |
| return false; |
| } |
| |
| bool BluetoothRemoteGattCharacteristicChromeOS::UpdateValue( |
| const std::vector<uint8>& value) { |
| VLOG(1) << "Cannot update the value of a remote GATT characteristic."; |
| return false; |
| } |
| |
| void BluetoothRemoteGattCharacteristicChromeOS::ReadRemoteCharacteristic( |
| const ValueCallback& callback, |
| const ErrorCallback& error_callback) { |
| VLOG(1) << "Sending GATT characteristic read request to characteristic: " |
| << GetIdentifier() << ", UUID: " << GetUUID().canonical_value() |
| << "."; |
| BluetoothGattCharacteristicClient::Properties* properties = |
| DBusThreadManager::Get()->GetBluetoothGattCharacteristicClient()-> |
| GetProperties(object_path_); |
| DCHECK(properties); |
| properties->value.Get( |
| base::Bind(&BluetoothRemoteGattCharacteristicChromeOS::OnGetValue, |
| weak_ptr_factory_.GetWeakPtr(), |
| callback, error_callback)); |
| } |
| |
| void BluetoothRemoteGattCharacteristicChromeOS::WriteRemoteCharacteristic( |
| const std::vector<uint8>& new_value, |
| const base::Closure& callback, |
| const ErrorCallback& error_callback) { |
| VLOG(1) << "Sending GATT characteristic write request to characteristic: " |
| << GetIdentifier() << ", UUID: " << GetUUID().canonical_value() |
| << ", with value: " << new_value << "."; |
| |
| // Permission and bonding are handled by BlueZ so no need check it here. |
| if (new_value.empty()) { |
| VLOG(1) << "Nothing to write."; |
| error_callback.Run(); |
| return; |
| } |
| |
| BluetoothGattCharacteristicClient::Properties* properties = |
| DBusThreadManager::Get()->GetBluetoothGattCharacteristicClient()-> |
| GetProperties(object_path_); |
| DCHECK(properties); |
| properties->value.Set( |
| new_value, |
| base::Bind(&BluetoothRemoteGattCharacteristicChromeOS::OnSetValue, |
| weak_ptr_factory_.GetWeakPtr(), |
| callback, error_callback)); |
| } |
| |
| void BluetoothRemoteGattCharacteristicChromeOS::GattDescriptorAdded( |
| const dbus::ObjectPath& object_path) { |
| if (descriptors_.find(object_path) != descriptors_.end()) { |
| VLOG(1) << "Remote GATT characteristic descriptor already exists: " |
| << object_path.value(); |
| return; |
| } |
| |
| BluetoothGattDescriptorClient::Properties* properties = |
| DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()-> |
| GetProperties(object_path); |
| DCHECK(properties); |
| if (properties->characteristic.value() != object_path_) { |
| VLOG(2) << "Remote GATT descriptor does not belong to this characteristic."; |
| return; |
| } |
| |
| VLOG(1) << "Adding new remote GATT descriptor for GATT characteristic: " |
| << GetIdentifier() << ", UUID: " << GetUUID().canonical_value(); |
| |
| BluetoothRemoteGattDescriptorChromeOS* descriptor = |
| new BluetoothRemoteGattDescriptorChromeOS(this, object_path); |
| descriptors_[object_path] = descriptor; |
| DCHECK(descriptor->GetIdentifier() == object_path.value()); |
| DCHECK(descriptor->GetUUID().IsValid()); |
| DCHECK(service_); |
| |
| service_->NotifyDescriptorAddedOrRemoved(this, descriptor, true /* added */); |
| service_->NotifyServiceChanged(); |
| } |
| |
| void BluetoothRemoteGattCharacteristicChromeOS::GattDescriptorRemoved( |
| const dbus::ObjectPath& object_path) { |
| DescriptorMap::iterator iter = descriptors_.find(object_path); |
| if (iter == descriptors_.end()) { |
| VLOG(2) << "Unknown descriptor removed: " << object_path.value(); |
| return; |
| } |
| |
| VLOG(1) << "Removing remote GATT descriptor from characteristic: " |
| << GetIdentifier() << ", UUID: " << GetUUID().canonical_value(); |
| |
| BluetoothRemoteGattDescriptorChromeOS* descriptor = iter->second; |
| DCHECK(descriptor->object_path() == object_path); |
| descriptors_.erase(iter); |
| |
| service_->NotifyDescriptorAddedOrRemoved(this, descriptor, false /* added */); |
| delete descriptor; |
| |
| DCHECK(service_); |
| |
| service_->NotifyServiceChanged(); |
| } |
| |
| void BluetoothRemoteGattCharacteristicChromeOS::GattDescriptorPropertyChanged( |
| const dbus::ObjectPath& object_path, |
| const std::string& property_name) { |
| DescriptorMap::const_iterator iter = descriptors_.find(object_path); |
| if (iter == descriptors_.end()) |
| return; |
| |
| // Ignore all property changes except for "Value". |
| BluetoothGattDescriptorClient::Properties* properties = |
| DBusThreadManager::Get()->GetBluetoothGattDescriptorClient()-> |
| GetProperties(object_path); |
| DCHECK(properties); |
| if (property_name != properties->value.name()) |
| return; |
| |
| VLOG(1) << "GATT descriptor property changed: " << object_path.value() |
| << ", property: " << property_name; |
| |
| DCHECK(service_); |
| |
| service_->NotifyDescriptorValueChanged( |
| this, iter->second, properties->value.value()); |
| } |
| |
| void BluetoothRemoteGattCharacteristicChromeOS::OnGetValue( |
| const ValueCallback& callback, |
| const ErrorCallback& error_callback, |
| bool success) { |
| if (!success) { |
| VLOG(1) << "Failed to read the value from the remote characteristic."; |
| error_callback.Run(); |
| return; |
| } |
| |
| VLOG(1) << "Read value of remote characteristic."; |
| BluetoothGattCharacteristicClient::Properties* properties = |
| DBusThreadManager::Get()->GetBluetoothGattCharacteristicClient()-> |
| GetProperties(object_path_); |
| DCHECK(properties); |
| callback.Run(properties->value.value()); |
| } |
| |
| void BluetoothRemoteGattCharacteristicChromeOS::OnSetValue( |
| const base::Closure& callback, |
| const ErrorCallback& error_callback, |
| bool success) { |
| if (!success) { |
| VLOG(1) << "Failed to write the value of remote characteristic."; |
| error_callback.Run(); |
| return; |
| } |
| |
| VLOG(1) << "Wrote value of remote characteristic."; |
| callback.Run(); |
| } |
| |
| } // namespace chromeos |