device/bluetooth/bluetooth_classic_device_mac.mm

   1 // Copyright 2013 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 #include "device/bluetooth/bluetooth_classic_device_mac.h"
   6
   7 #include <string>
   8
   9 #include "base/basictypes.h"
  10 #include "base/bind.h"
  11 #include "base/hash.h"
  12 #include "base/mac/sdk_forward_declarations.h"
  13 #include "base/sequenced_task_runner.h"
  14 #include "base/strings/string_number_conversions.h"
  15 #include "base/strings/string_util.h"
  16 #include "base/strings/sys_string_conversions.h"
  17 #include "device/bluetooth/bluetooth_socket_mac.h"
  18 #include "device/bluetooth/bluetooth_uuid.h"
  19
  20 // Undocumented API for accessing the Bluetooth transmit power level.
  21 // Similar to the API defined here [ http://goo.gl/20Q5vE ].
  22 @interface IOBluetoothHostController (UndocumentedAPI)
  23 - (IOReturn)
  24     BluetoothHCIReadTransmitPowerLevel:(BluetoothConnectionHandle)connection
  25                                 inType:(BluetoothHCITransmitPowerLevelType)type
  26                  outTransmitPowerLevel:(BluetoothHCITransmitPowerLevel*)level;
  27 @end
  28
  29 namespace device {
  30 namespace {
  31
  32 const char kApiUnavailable[] = "This API is not implemented on this platform.";
  33
  34 // Returns the first (should be, only) UUID contained within the
  35 // |service_class_data|. Returns an invalid (empty) UUID if none is found.
  36 BluetoothUUID ExtractUuid(IOBluetoothSDPDataElement* service_class_data) {
  37   NSArray* inner_elements = [service_class_data getArrayValue];
  38   IOBluetoothSDPUUID* sdp_uuid = nil;
  39   for (IOBluetoothSDPDataElement* inner_element in inner_elements) {
  40     if ([inner_element getTypeDescriptor] == kBluetoothSDPDataElementTypeUUID) {
  41       sdp_uuid = [[inner_element getUUIDValue] getUUIDWithLength:16];
  42       break;
  43     }
  44   }
  45
  46   if (!sdp_uuid)
  47     return BluetoothUUID();
  48
  49   const uint8* uuid_bytes = reinterpret_cast<const uint8*>([sdp_uuid bytes]);
  50   std::string uuid_str = base::HexEncode(uuid_bytes, 16);
  51   DCHECK_EQ(uuid_str.size(), 32U);
  52   uuid_str.insert(8, "-");
  53   uuid_str.insert(13, "-");
  54   uuid_str.insert(18, "-");
  55   uuid_str.insert(23, "-");
  56   return BluetoothUUID(uuid_str);
  57 }
  58
  59 }  // namespace
  60
  61 BluetoothClassicDeviceMac::BluetoothClassicDeviceMac(
  62     BluetoothAdapterMac* adapter,
  63     IOBluetoothDevice* device)
  64     : BluetoothDeviceMac(adapter), device_([device retain]) {}
  65
  66 BluetoothClassicDeviceMac::~BluetoothClassicDeviceMac() {
  67 }
  68
  69 uint32 BluetoothClassicDeviceMac::GetBluetoothClass() const {
  70   return [device_ classOfDevice];
  71 }
  72
  73 std::string BluetoothClassicDeviceMac::GetDeviceName() const {
  74   return base::SysNSStringToUTF8([device_ name]);
  75 }
  76
  77 void BluetoothClassicDeviceMac::CreateGattConnectionImpl() {
  78   // Classic devices do not support GATT connection.
  79   DidFailToConnectGatt(ERROR_UNSUPPORTED_DEVICE);
  80 }
  81
  82 void BluetoothClassicDeviceMac::DisconnectGatt() {}
  83
  84 std::string BluetoothClassicDeviceMac::GetAddress() const {
  85   return GetDeviceAddress(device_);
  86 }
  87
  88 BluetoothDevice::VendorIDSource BluetoothClassicDeviceMac::GetVendorIDSource()
  89     const {
  90   return VENDOR_ID_UNKNOWN;
  91 }
  92
  93 uint16 BluetoothClassicDeviceMac::GetVendorID() const {
  94   return 0;
  95 }
  96
  97 uint16 BluetoothClassicDeviceMac::GetProductID() const {
  98   return 0;
  99 }
 100
 101 uint16 BluetoothClassicDeviceMac::GetDeviceID() const {
 102   return 0;
 103 }
 104
 105 bool BluetoothClassicDeviceMac::IsPaired() const {
 106   return [device_ isPaired];
 107 }
 108
 109 bool BluetoothClassicDeviceMac::IsConnected() const {
 110   return [device_ isConnected];
 111 }
 112
 113 bool BluetoothClassicDeviceMac::IsGattConnected() const {
 114   return false;  // Classic devices do not support GATT connection.
 115 }
 116
 117 bool BluetoothClassicDeviceMac::IsConnectable() const {
 118   return false;
 119 }
 120
 121 bool BluetoothClassicDeviceMac::IsConnecting() const {
 122   return false;
 123 }
 124
 125 BluetoothDevice::UUIDList BluetoothClassicDeviceMac::GetUUIDs() const {
 126   UUIDList uuids;
 127   for (IOBluetoothSDPServiceRecord* service_record in [device_ services]) {
 128     IOBluetoothSDPDataElement* service_class_data =
 129         [service_record getAttributeDataElement:
 130                             kBluetoothSDPAttributeIdentifierServiceClassIDList];
 131     if ([service_class_data getTypeDescriptor] ==
 132         kBluetoothSDPDataElementTypeDataElementSequence) {
 133       BluetoothUUID uuid = ExtractUuid(service_class_data);
 134       if (uuid.IsValid())
 135         uuids.push_back(uuid);
 136     }
 137   }
 138   return uuids;
 139 }
 140
 141 int16 BluetoothClassicDeviceMac::GetInquiryRSSI() const {
 142   return kUnknownPower;
 143 }
 144
 145 int16 BluetoothClassicDeviceMac::GetInquiryTxPower() const {
 146   NOTIMPLEMENTED();
 147   return kUnknownPower;
 148 }
 149
 150 bool BluetoothClassicDeviceMac::ExpectingPinCode() const {
 151   NOTIMPLEMENTED();
 152   return false;
 153 }
 154
 155 bool BluetoothClassicDeviceMac::ExpectingPasskey() const {
 156   NOTIMPLEMENTED();
 157   return false;
 158 }
 159
 160 bool BluetoothClassicDeviceMac::ExpectingConfirmation() const {
 161   NOTIMPLEMENTED();
 162   return false;
 163 }
 164
 165 void BluetoothClassicDeviceMac::GetConnectionInfo(
 166     const ConnectionInfoCallback& callback) {
 167   ConnectionInfo connection_info;
 168   if (![device_ isConnected]) {
 169     callback.Run(connection_info);
 170     return;
 171   }
 172
 173   connection_info.rssi = [device_ rawRSSI];
 174   // The API guarantees that +127 is returned in case the RSSI is not readable:
 175   // http://goo.gl/bpURYv
 176   if (connection_info.rssi == 127)
 177     connection_info.rssi = kUnknownPower;
 178
 179   connection_info.transmit_power =
 180       GetHostTransmitPower(kReadCurrentTransmitPowerLevel);
 181   connection_info.max_transmit_power =
 182       GetHostTransmitPower(kReadMaximumTransmitPowerLevel);
 183
 184   callback.Run(connection_info);
 185 }
 186
 187 void BluetoothClassicDeviceMac::Connect(
 188     PairingDelegate* pairing_delegate,
 189     const base::Closure& callback,
 190     const ConnectErrorCallback& error_callback) {
 191   NOTIMPLEMENTED();
 192 }
 193
 194 void BluetoothClassicDeviceMac::SetPinCode(const std::string& pincode) {
 195   NOTIMPLEMENTED();
 196 }
 197
 198 void BluetoothClassicDeviceMac::SetPasskey(uint32 passkey) {
 199   NOTIMPLEMENTED();
 200 }
 201
 202 void BluetoothClassicDeviceMac::ConfirmPairing() {
 203   NOTIMPLEMENTED();
 204 }
 205
 206 void BluetoothClassicDeviceMac::RejectPairing() {
 207   NOTIMPLEMENTED();
 208 }
 209
 210 void BluetoothClassicDeviceMac::CancelPairing() {
 211   NOTIMPLEMENTED();
 212 }
 213
 214 void BluetoothClassicDeviceMac::Disconnect(
 215     const base::Closure& callback,
 216     const ErrorCallback& error_callback) {
 217   NOTIMPLEMENTED();
 218 }
 219
 220 void BluetoothClassicDeviceMac::Forget(const ErrorCallback& error_callback) {
 221   NOTIMPLEMENTED();
 222 }
 223
 224 void BluetoothClassicDeviceMac::ConnectToService(
 225     const BluetoothUUID& uuid,
 226     const ConnectToServiceCallback& callback,
 227     const ConnectToServiceErrorCallback& error_callback) {
 228   scoped_refptr<BluetoothSocketMac> socket = BluetoothSocketMac::CreateSocket();
 229   socket->Connect(device_.get(), uuid, base::Bind(callback, socket),
 230                   error_callback);
 231 }
 232
 233 void BluetoothClassicDeviceMac::ConnectToServiceInsecurely(
 234     const BluetoothUUID& uuid,
 235     const ConnectToServiceCallback& callback,
 236     const ConnectToServiceErrorCallback& error_callback) {
 237   error_callback.Run(kApiUnavailable);
 238 }
 239
 240 void BluetoothClassicDeviceMac::CreateGattConnection(
 241     const GattConnectionCallback& callback,
 242     const ConnectErrorCallback& error_callback) {
 243   // TODO(armansito): Implement.
 244   error_callback.Run(ERROR_UNSUPPORTED_DEVICE);
 245 }
 246
 247 NSDate* BluetoothClassicDeviceMac::GetLastUpdateTime() const {
 248   return [device_ getLastInquiryUpdate];
 249 }
 250
 251 int BluetoothClassicDeviceMac::GetHostTransmitPower(
 252     BluetoothHCITransmitPowerLevelType power_level_type) const {
 253   IOBluetoothHostController* controller =
 254       [IOBluetoothHostController defaultController];
 255
 256   // Bail if the undocumented API is unavailable on this machine.
 257   SEL selector = @selector(BluetoothHCIReadTransmitPowerLevel:
 258                                                        inType:
 259                                         outTransmitPowerLevel:);
 260   if (![controller respondsToSelector:selector])
 261     return kUnknownPower;
 262
 263   BluetoothHCITransmitPowerLevel power_level;
 264   IOReturn result =
 265       [controller BluetoothHCIReadTransmitPowerLevel:[device_ connectionHandle]
 266                                               inType:power_level_type
 267                                outTransmitPowerLevel:&power_level];
 268   if (result != kIOReturnSuccess)
 269     return kUnknownPower;
 270
 271   return power_level;
 272 }
 273
 274 // static
 275 std::string BluetoothClassicDeviceMac::GetDeviceAddress(
 276     IOBluetoothDevice* device) {
 277   return CanonicalizeAddress(base::SysNSStringToUTF8([device addressString]));
 278 }
 279
 280 }  // namespace device