| OLD | NEW |
| (Empty) |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CHROME_BROWSER_CHROMEOS_BLUETOOTH_BLUETOOTH_DEVICE_H_ | |
| 6 #define CHROME_BROWSER_CHROMEOS_BLUETOOTH_BLUETOOTH_DEVICE_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "base/callback.h" | |
| 12 #include "base/string16.h" | |
| 13 #include "base/memory/ref_counted.h" | |
| 14 | |
| 15 namespace chromeos { | |
| 16 | |
| 17 class BluetoothServiceRecord; | |
| 18 class BluetoothSocket; | |
| 19 | |
| 20 struct BluetoothOutOfBandPairingData; | |
| 21 | |
| 22 // BluetoothDevice represents a remote Bluetooth device, both its properties and | |
| 23 // capabilities as discovered by a local adapter and actions that may be | |
| 24 // performed on the remove device such as pairing, connection and disconnection. | |
| 25 // | |
| 26 // The class is instantiated and managed by the BluetoothAdapter class | |
| 27 // and pointers should only be obtained from that class and not cached, | |
| 28 // instead use the address() method as a unique key for a device. | |
| 29 // | |
| 30 // Since the lifecycle of BluetoothDevice instances is managed by | |
| 31 // BluetoothAdapter, that class rather than this provides observer methods | |
| 32 // for devices coming and going, as well as properties being updated. | |
| 33 class BluetoothDevice { | |
| 34 public: | |
| 35 // Possible values that may be returned by GetDeviceType(), representing | |
| 36 // different types of bluetooth device that we support or are aware of | |
| 37 // decoded from the bluetooth class information. | |
| 38 enum DeviceType { | |
| 39 DEVICE_UNKNOWN, | |
| 40 DEVICE_COMPUTER, | |
| 41 DEVICE_PHONE, | |
| 42 DEVICE_MODEM, | |
| 43 DEVICE_AUDIO, | |
| 44 DEVICE_CAR_AUDIO, | |
| 45 DEVICE_VIDEO, | |
| 46 DEVICE_PERIPHERAL, | |
| 47 DEVICE_JOYSTICK, | |
| 48 DEVICE_GAMEPAD, | |
| 49 DEVICE_KEYBOARD, | |
| 50 DEVICE_MOUSE, | |
| 51 DEVICE_TABLET, | |
| 52 DEVICE_KEYBOARD_MOUSE_COMBO | |
| 53 }; | |
| 54 | |
| 55 // Interface for observing changes from bluetooth devices. | |
| 56 class Observer { | |
| 57 public: | |
| 58 virtual ~Observer() {} | |
| 59 | |
| 60 // TODO(keybuk): add observers for pairing and connection. | |
| 61 }; | |
| 62 | |
| 63 // Interface for negotiating pairing of bluetooth devices. | |
| 64 class PairingDelegate { | |
| 65 public: | |
| 66 virtual ~PairingDelegate() {} | |
| 67 | |
| 68 // This method will be called when the Bluetooth daemon requires a | |
| 69 // PIN Code for authentication of the device |device|, the delegate should | |
| 70 // obtain the code from the user and call SetPinCode() on the device to | |
| 71 // provide it, or RejectPairing() or CancelPairing() to reject or cancel | |
| 72 // the request. | |
| 73 // | |
| 74 // PIN Codes are generally required for Bluetooth 2.0 and earlier devices | |
| 75 // for which there is no automatic pairing or special handling. | |
| 76 virtual void RequestPinCode(BluetoothDevice* device) = 0; | |
| 77 | |
| 78 // This method will be called when the Bluetooth daemon requires a | |
| 79 // Passkey for authentication of the device |device|, the delegate should | |
| 80 // obtain the passkey from the user (a numeric in the range 0-999999) and | |
| 81 // call SetPasskey() on the device to provide it, or RejectPairing() or | |
| 82 // CancelPairing() to reject or cancel the request. | |
| 83 // | |
| 84 // Passkeys are generally required for Bluetooth 2.1 and later devices | |
| 85 // which cannot provide input or display on their own, and don't accept | |
| 86 // passkey-less pairing. | |
| 87 virtual void RequestPasskey(BluetoothDevice* device) = 0; | |
| 88 | |
| 89 // This method will be called when the Bluetooth daemon requires that the | |
| 90 // user enter the PIN code |pincode| into the device |device| so that it | |
| 91 // may be authenticated. The DismissDisplayOrConfirm() method | |
| 92 // will be called to dismiss the display once pairing is complete or | |
| 93 // cancelled. | |
| 94 // | |
| 95 // This is used for Bluetooth 2.0 and earlier keyboard devices, the | |
| 96 // |pincode| will always be a six-digit numeric in the range 000000-999999 | |
| 97 // for compatibilty with later specifications. | |
| 98 virtual void DisplayPinCode(BluetoothDevice* device, | |
| 99 const std::string& pincode) = 0; | |
| 100 | |
| 101 // This method will be called when the Bluetooth daemon requires that the | |
| 102 // user enter the Passkey |passkey| into the device |device| so that it | |
| 103 // may be authenticated. The DismissDisplayOrConfirm() method will be | |
| 104 // called to dismiss the display once pairing is complete or cancelled. | |
| 105 // | |
| 106 // This is used for Bluetooth 2.1 and later devices that support input | |
| 107 // but not display, such as keyboards. The Passkey is a numeric in the | |
| 108 // range 0-999999 and should be always presented zero-padded to six | |
| 109 // digits. | |
| 110 virtual void DisplayPasskey(BluetoothDevice* device, | |
| 111 uint32 passkey) = 0; | |
| 112 | |
| 113 // This method will be called when the Bluetooth daemon requires that the | |
| 114 // user confirm that the Passkey |passkey| is displayed on the screen | |
| 115 // of the device |device| so that it may be authenticated. The delegate | |
| 116 // should display to the user and ask for confirmation, then call | |
| 117 // ConfirmPairing() on the device to confirm, RejectPairing() on the device | |
| 118 // to reject or CancelPairing() on the device to cancel authentication | |
| 119 // for any other reason. | |
| 120 // | |
| 121 // This is used for Bluetooth 2.1 and later devices that support display, | |
| 122 // such as other computers or phones. The Passkey is a numeric in the | |
| 123 // range 0-999999 and should be always present zero-padded to six | |
| 124 // digits. | |
| 125 virtual void ConfirmPasskey(BluetoothDevice* device, | |
| 126 uint32 passkey) = 0; | |
| 127 | |
| 128 // This method will be called when any previous DisplayPinCode(), | |
| 129 // DisplayPasskey() or ConfirmPasskey() request should be concluded | |
| 130 // and removed from the user. | |
| 131 virtual void DismissDisplayOrConfirm() = 0; | |
| 132 }; | |
| 133 | |
| 134 virtual ~BluetoothDevice(); | |
| 135 | |
| 136 // Returns the Bluetooth of address the device. This should be used as | |
| 137 // a unique key to identify the device and copied where needed. | |
| 138 virtual const std::string& address() const; | |
| 139 | |
| 140 // Returns the name of the device suitable for displaying, this may | |
| 141 // be a synthesied string containing the address and localized type name | |
| 142 // if the device has no obtained name. | |
| 143 virtual string16 GetName() const; | |
| 144 | |
| 145 // Returns the type of the device, limited to those we support or are | |
| 146 // aware of, by decoding the bluetooth class information. The returned | |
| 147 // values are unique, and do not overlap, so DEVICE_KEYBOARD is not also | |
| 148 // DEVICE_PERIPHERAL. | |
| 149 DeviceType GetDeviceType() const; | |
| 150 | |
| 151 // Indicates whether the device is paired to the adapter, whether or not | |
| 152 // that pairing is permanent or temporary. | |
| 153 virtual bool IsPaired() const = 0; | |
| 154 | |
| 155 // Indicates whether the device is visible to the adapter, this is not | |
| 156 // mutually exclusive to being paired. | |
| 157 virtual bool IsVisible() const; | |
| 158 | |
| 159 // Indicates whether the device is bonded to the adapter, bonding is | |
| 160 // formed by pairing and exchanging high-security link keys so that | |
| 161 // connections may be encrypted. | |
| 162 virtual bool IsBonded() const; | |
| 163 | |
| 164 // Indicates whether the device is currently connected to the adapter | |
| 165 // and at least one service available for use. | |
| 166 virtual bool IsConnected() const; | |
| 167 | |
| 168 // Returns the services (as UUID strings) that this device provides. | |
| 169 typedef std::vector<std::string> ServiceList; | |
| 170 virtual const ServiceList& GetServices() const = 0; | |
| 171 | |
| 172 // The ErrorCallback is used for methods that can fail in which case it | |
| 173 // is called, in the success case the callback is simply not called. | |
| 174 typedef base::Callback<void()> ErrorCallback; | |
| 175 | |
| 176 // Returns the services (as BluetoothServiceRecord objects) that this device | |
| 177 // provides. | |
| 178 typedef ScopedVector<BluetoothServiceRecord> ServiceRecordList; | |
| 179 typedef base::Callback<void(const ServiceRecordList&)> ServiceRecordsCallback; | |
| 180 virtual void GetServiceRecords(const ServiceRecordsCallback& callback, | |
| 181 const ErrorCallback& error_callback) = 0; | |
| 182 | |
| 183 // Indicates whether this device provides the given service. |uuid| should | |
| 184 // be in canonical form (see bluetooth_utils::CanonicalUuid). | |
| 185 virtual bool ProvidesServiceWithUUID(const std::string& uuid) const = 0; | |
| 186 | |
| 187 // The ProvidesServiceCallback is used by ProvidesServiceWithName to indicate | |
| 188 // whether or not a matching service was found. | |
| 189 typedef base::Callback<void(bool)> ProvidesServiceCallback; | |
| 190 | |
| 191 // Indicates whether this device provides the given service. | |
| 192 virtual void ProvidesServiceWithName( | |
| 193 const std::string& name, | |
| 194 const ProvidesServiceCallback& callback) = 0; | |
| 195 | |
| 196 // Indicates whether the device is currently pairing and expecting a | |
| 197 // PIN Code to be returned. | |
| 198 virtual bool ExpectingPinCode() const = 0; | |
| 199 | |
| 200 // Indicates whether the device is currently pairing and expecting a | |
| 201 // Passkey to be returned. | |
| 202 virtual bool ExpectingPasskey() const = 0; | |
| 203 | |
| 204 // Indicates whether the device is currently pairing and expecting | |
| 205 // confirmation of a displayed passkey. | |
| 206 virtual bool ExpectingConfirmation() const = 0; | |
| 207 | |
| 208 // SocketCallback is used by ConnectToService to return a BluetoothSocket to | |
| 209 // the caller, or NULL if there was an error. The socket will remain open | |
| 210 // until the last reference to the returned BluetoothSocket is released. | |
| 211 typedef base::Callback<void(scoped_refptr<BluetoothSocket>)> | |
| 212 SocketCallback; | |
| 213 | |
| 214 // Initiates a connection to the device, pairing first if necessary. | |
| 215 // | |
| 216 // Method calls will be made on the supplied object |pairing_delegate| | |
| 217 // to indicate what display, and in response should make method calls | |
| 218 // back to the device object. Not all devices require user responses | |
| 219 // during pairing, so it is normal for |pairing_delegate| to receive no | |
| 220 // calls. To explicitly force a low-security connection without bonding, | |
| 221 // pass NULL, though this is ignored if the device is already paired. | |
| 222 // | |
| 223 // If the request fails, |error_callback| will be called; otherwise, | |
| 224 // |callback| is called when the request is complete. | |
| 225 virtual void Connect(PairingDelegate* pairing_delegate, | |
| 226 const base::Closure& callback, | |
| 227 const ErrorCallback& error_callback) = 0; | |
| 228 | |
| 229 // Sends the PIN code |pincode| to the remote device during pairing. | |
| 230 // | |
| 231 // PIN Codes are generally required for Bluetooth 2.0 and earlier devices | |
| 232 // for which there is no automatic pairing or special handling. | |
| 233 virtual void SetPinCode(const std::string& pincode) = 0; | |
| 234 | |
| 235 // Sends the Passkey |passkey| to the remote device during pairing. | |
| 236 // | |
| 237 // Passkeys are generally required for Bluetooth 2.1 and later devices | |
| 238 // which cannot provide input or display on their own, and don't accept | |
| 239 // passkey-less pairing, and are a numeric in the range 0-999999. | |
| 240 virtual void SetPasskey(uint32 passkey) = 0; | |
| 241 | |
| 242 // Confirms to the remote device during pairing that a passkey provided by | |
| 243 // the ConfirmPasskey() delegate call is displayed on both devices. | |
| 244 virtual void ConfirmPairing() = 0; | |
| 245 | |
| 246 // Rejects a pairing or connection request from a remote device. | |
| 247 virtual void RejectPairing() = 0; | |
| 248 | |
| 249 // Cancels a pairing or connection attempt to a remote device. | |
| 250 virtual void CancelPairing() = 0; | |
| 251 | |
| 252 // Disconnects the device, terminating the low-level ACL connection | |
| 253 // and any application connections using it. Link keys and other pairing | |
| 254 // information are not discarded, and the device object is not deleted. | |
| 255 // If the request fails, |error_callback| will be called; otherwise, | |
| 256 // |callback| is called when the request is complete. | |
| 257 virtual void Disconnect(const base::Closure& callback, | |
| 258 const ErrorCallback& error_callback) = 0; | |
| 259 | |
| 260 // Disconnects the device, terminating the low-level ACL connection | |
| 261 // and any application connections using it, and then discards link keys | |
| 262 // and other pairing information. The device object remainds valid until | |
| 263 // returing from the calling function, after which it should be assumed to | |
| 264 // have been deleted. If the request fails, |error_callback| will be called. | |
| 265 // There is no callback for success beause this object is often deleted | |
| 266 // before that callback would be called. | |
| 267 virtual void Forget(const ErrorCallback& error_callback) = 0; | |
| 268 | |
| 269 // Attempts to open a socket to a service matching |uuid| on this device. If | |
| 270 // the connection is successful, |callback| is called with a BluetoothSocket. | |
| 271 // Otherwise |callback| is called with NULL. The socket is closed as soon as | |
| 272 // all references to the BluetoothSocket are released. Note that the | |
| 273 // BluetoothSocket object can outlive both this BluetoothDevice and the | |
| 274 // BluetoothAdapter for this device. | |
| 275 virtual void ConnectToService(const std::string& service_uuid, | |
| 276 const SocketCallback& callback) = 0; | |
| 277 | |
| 278 // Sets the Out Of Band pairing data for this device to |data|. Exactly one | |
| 279 // of |callback| or |error_callback| will be run. | |
| 280 virtual void SetOutOfBandPairingData( | |
| 281 const BluetoothOutOfBandPairingData& data, | |
| 282 const base::Closure& callback, | |
| 283 const ErrorCallback& error_callback) = 0; | |
| 284 | |
| 285 // Clears the Out Of Band pairing data for this device. Exactly one of | |
| 286 // |callback| or |error_callback| will be run. | |
| 287 virtual void ClearOutOfBandPairingData( | |
| 288 const base::Closure& callback, | |
| 289 const ErrorCallback& error_callback) = 0; | |
| 290 | |
| 291 protected: | |
| 292 BluetoothDevice(); | |
| 293 | |
| 294 // The Bluetooth class of the device, a bitmask that may be decoded using | |
| 295 // https://www.bluetooth.org/Technical/AssignedNumbers/baseband.htm | |
| 296 uint32 bluetooth_class_; | |
| 297 | |
| 298 // The name of the device, as supplied by the remote device. | |
| 299 std::string name_; | |
| 300 | |
| 301 // The Bluetooth address of the device. | |
| 302 std::string address_; | |
| 303 | |
| 304 // Tracked device state, updated by the adapter managing the lifecyle of | |
| 305 // the device. | |
| 306 bool visible_; | |
| 307 bool bonded_; | |
| 308 bool connected_; | |
| 309 | |
| 310 private: | |
| 311 // Returns a localized string containing the device's bluetooth address and | |
| 312 // a device type for display when |name_| is empty. | |
| 313 string16 GetAddressWithLocalizedDeviceTypeName() const; | |
| 314 }; | |
| 315 | |
| 316 } // namespace chromeos | |
| 317 | |
| 318 #endif // CHROME_BROWSER_CHROMEOS_BLUETOOTH_BLUETOOTH_DEVICE_H_ | |
| OLD | NEW |