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// Copyright 2013 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.
#ifndef DEVICE_BLUETOOTH_DBUS_BLUETOOTH_DEVICE_CLIENT_H_
#define DEVICE_BLUETOOTH_DBUS_BLUETOOTH_DEVICE_CLIENT_H_
#include <stdint.h>
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "base/observer_list.h"
#include "base/values.h"
#include "dbus/object_path.h"
#include "dbus/property.h"
#include "device/bluetooth/bluetooth_export.h"
#include "device/bluetooth/bluez/bluetooth_service_record_bluez.h"
#include "device/bluetooth/dbus/bluez_dbus_client.h"
namespace bluez {
// BluetoothDeviceClient is used to communicate with objects representing
// remote Bluetooth Devices.
class DEVICE_BLUETOOTH_EXPORT BluetoothDeviceClient : public BluezDBusClient {
public:
using ServiceRecordList = std::vector<BluetoothServiceRecordBlueZ>;
// This callback invoked for a successful GetConnInfo API call with the
// RSSI, TX power, and maximum TX power of the current connection.
using ConnInfoCallback = base::Callback<
void(int16_t rssi, int16_t transmit_power, int16_t max_transmit_power)>;
// This callback invoked for a successful GetServiceRecords API call with the
// currently discovered service records.
using ServiceRecordsCallback = base::Callback<void(const ServiceRecordList&)>;
// The ErrorCallback is used by device methods to indicate failure.
// It receives two arguments: the name of the error in |error_name| and
// an optional message in |error_message|.
using ErrorCallback = base::Callback<void(const std::string& error_name,
const std::string& error_message)>;
// Structure of properties associated with bluetooth devices.
struct Properties : public dbus::PropertySet {
// The Bluetooth device address of the device. Read-only.
dbus::Property<std::string> address;
// The Bluetooth friendly name of the device. Read-only, to give a
// different local name, use the |alias| property.
dbus::Property<std::string> name;
// Proposed icon name for the device according to the freedesktop.org
// icon naming specification. Read-only.
dbus::Property<std::string> icon;
// The Bluetooth class of the device. Read-only.
dbus::Property<uint32_t> bluetooth_class;
// The transport type of the device. Read-only.
dbus::Property<std::string> type;
// The GAP external appearance of the device. Read-only.
dbus::Property<uint16_t> appearance;
// Unique numeric identifier for the vendor of the device. Read-only.
dbus::Property<uint16_t> vendor;
// List of 128-bit UUIDs that represent the available remote services.
// Read-only.
dbus::Property<std::vector<std::string>> uuids;
// Transmitted power level. This field is avaliable only for LE devices
// that include this field in AD. Read-only.
dbus::Property<int16_t> tx_power;
// Indicates that the device is currently paired. Read-only.
dbus::Property<bool> paired;
// Indicates that the device is currently connected. Read-only.
dbus::Property<bool> connected;
// Whether the device is trusted, and connections should be always
// accepted and attempted when the device is visible.
dbus::Property<bool> trusted;
// Whether the device is blocked, connections will be always rejected
// and the device will not be visible.
dbus::Property<bool> blocked;
// Local alias for the device, if not set, is equal to |name|.
dbus::Property<std::string> alias;
// Object path of the adapter the device belongs to. Read-only.
dbus::Property<dbus::ObjectPath> adapter;
// Indicates whether the device is likely to only support pre-2.1
// PIN Code pairing rather than 2.1 Secure Simple Pairing, this can
// give false positives. Read-only.
dbus::Property<bool> legacy_pairing;
// Remote Device ID information in Linux kernel modalias format. Read-only.
dbus::Property<std::string> modalias;
// Received signal strength indicator that is set when the device is
// discovered during inquiry. Read-only.
dbus::Property<int16_t> rssi;
// Indicate whether or not service discovery has been resolved. Read-only.
dbus::Property<bool> services_resolved;
Properties(dbus::ObjectProxy* object_proxy,
const std::string& interface_name,
const PropertyChangedCallback& callback);
~Properties() override;
};
// Interface for observing changes from a remote bluetooth device.
class Observer {
public:
virtual ~Observer() {}
// Called when the remote device with object path |object_path| is added
// to the set of known devices.
virtual void DeviceAdded(const dbus::ObjectPath& object_path) {}
// Called when the remote device with object path |object_path| is removed
// from the set of known devices.
virtual void DeviceRemoved(const dbus::ObjectPath& object_path) {}
// Called when the device with object path |object_path| has a
// change in value of the property named |property_name|.
virtual void DevicePropertyChanged(const dbus::ObjectPath& object_path,
const std::string& property_name) {}
};
~BluetoothDeviceClient() override;
// Adds and removes observers for events on all remote bluetooth
// devices. Check the |object_path| parameter of observer methods to
// determine which device is issuing the event.
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Returns the list of device object paths associated with the given adapter
// identified by the D-Bus object path |adapter_path|.
virtual std::vector<dbus::ObjectPath> GetDevicesForAdapter(
const dbus::ObjectPath& adapter_path) = 0;
// Obtain the properties for the device with object path |object_path|,
// any values should be copied if needed.
virtual Properties* GetProperties(const dbus::ObjectPath& object_path) = 0;
// Connects to the device with object path |object_path|, connecting any
// profiles that can be connected to and have been flagged as auto-connected;
// may be used to connect additional profiles for an already connected device,
// and succeeds if at least one profile is connected.
virtual void Connect(const dbus::ObjectPath& object_path,
const base::Closure& callback,
const ErrorCallback& error_callback) = 0;
// Disconnects the device with object path |object_path|, terminating
// the low-level ACL connection and any profiles using it.
virtual void Disconnect(const dbus::ObjectPath& object_path,
const base::Closure& callback,
const ErrorCallback& error_callback) = 0;
// Connects to the profile |uuid| on the device with object path
// |object_path|, provided that the profile has been registered with a
// handler on the local device.
virtual void ConnectProfile(const dbus::ObjectPath& object_path,
const std::string& uuid,
const base::Closure& callback,
const ErrorCallback& error_callback) = 0;
// Disconnects from the profile |uuid| on the device with object path
// |object_path|.
virtual void DisconnectProfile(const dbus::ObjectPath& object_path,
const std::string& uuid,
const base::Closure& callback,
const ErrorCallback& error_callback) = 0;
// Initiates pairing with the device with object path |object_path| and
// retrieves all SDP records or GATT primary services. An agent must be
// registered to handle the pairing request.
virtual void Pair(const dbus::ObjectPath& object_path,
const base::Closure& callback,
const ErrorCallback& error_callback) = 0;
// Cancels an in-progress pairing with the device with object path
// |object_path| initiated by Pair().
virtual void CancelPairing(const dbus::ObjectPath& object_path,
const base::Closure& callback,
const ErrorCallback& error_callback) = 0;
// Returns the RSSI, TX power, and maximum TX power of a connection to the
// device with object path |object_path|. If the device is not connected, then
// an error will be returned.
virtual void GetConnInfo(const dbus::ObjectPath& object_path,
const ConnInfoCallback& callback,
const ErrorCallback& error_callback) = 0;
// Returns the currently discovered service records for the device with
// object path |object_path|. If the device is not connected, then an error
// will be returned.
virtual void GetServiceRecords(const dbus::ObjectPath& object_path,
const ServiceRecordsCallback& callback,
const ErrorCallback& error_callback) = 0;
// Creates the instance.
static BluetoothDeviceClient* Create();
// Constants used to indicate exceptional error conditions.
static const char kNoResponseError[];
static const char kUnknownDeviceError[];
// Strings used by BlueZ for the transport type of the remote device.
// See https://chromium-review.googlesource.com/c/351512/
static const char kTypeBredr[];
static const char kTypeLe[];
static const char kTypeDual[];
protected:
BluetoothDeviceClient();
private:
DISALLOW_COPY_AND_ASSIGN(BluetoothDeviceClient);
};
} // namespace bluez
#endif // DEVICE_BLUETOOTH_DBUS_BLUETOOTH_DEVICE_CLIENT_H_