src/device/bluetooth/bluetooth_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_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 BluetoothDeviceMac::BluetoothDeviceMac(IOBluetoothDevice* device)
  62     : device_([device retain]) {
  63 }
  64
  65 BluetoothDeviceMac::~BluetoothDeviceMac() {
  66 }
  67
  68 uint32 BluetoothDeviceMac::GetBluetoothClass() const {
  69   return [device_ classOfDevice];
  70 }
  71
  72 std::string BluetoothDeviceMac::GetDeviceName() const {
  73   return base::SysNSStringToUTF8([device_ name]);
  74 }
  75
  76 std::string BluetoothDeviceMac::GetAddress() const {
  77   return GetDeviceAddress(device_);
  78 }
  79
  80 BluetoothDevice::VendorIDSource BluetoothDeviceMac::GetVendorIDSource() const {
  81   return VENDOR_ID_UNKNOWN;
  82 }
  83
  84 uint16 BluetoothDeviceMac::GetVendorID() const {
  85   return 0;
  86 }
  87
  88 uint16 BluetoothDeviceMac::GetProductID() const {
  89   return 0;
  90 }
  91
  92 uint16 BluetoothDeviceMac::GetDeviceID() const {
  93   return 0;
  94 }
  95
  96 int BluetoothDeviceMac::GetRSSI() const {
  97   if (![device_ isConnected]) {
  98     NOTIMPLEMENTED();
  99     return kUnknownPower;
 100   }
 101
 102   int rssi = [device_ rawRSSI];
 103
 104   // The API guarantees that +127 is returned in case the RSSI is not readable:
 105   // http://goo.gl/bpURYv
 106   if (rssi == 127)
 107     return kUnknownPower;
 108
 109   return rssi;
 110 }
 111
 112 int BluetoothDeviceMac::GetCurrentHostTransmitPower() const {
 113   return GetHostTransmitPower(kReadCurrentTransmitPowerLevel);
 114 }
 115
 116 int BluetoothDeviceMac::GetMaximumHostTransmitPower() const {
 117   return GetHostTransmitPower(kReadMaximumTransmitPowerLevel);
 118 }
 119
 120 bool BluetoothDeviceMac::IsPaired() const {
 121   return [device_ isPaired];
 122 }
 123
 124 bool BluetoothDeviceMac::IsConnected() const {
 125   return [device_ isConnected];
 126 }
 127
 128 bool BluetoothDeviceMac::IsConnectable() const {
 129   return false;
 130 }
 131
 132 bool BluetoothDeviceMac::IsConnecting() const {
 133   return false;
 134 }
 135
 136 BluetoothDevice::UUIDList BluetoothDeviceMac::GetUUIDs() const {
 137   UUIDList uuids;
 138   for (IOBluetoothSDPServiceRecord* service_record in [device_ services]) {
 139     IOBluetoothSDPDataElement* service_class_data =
 140         [service_record getAttributeDataElement:
 141             kBluetoothSDPAttributeIdentifierServiceClassIDList];
 142     if ([service_class_data getTypeDescriptor] ==
 143             kBluetoothSDPDataElementTypeDataElementSequence) {
 144       BluetoothUUID uuid = ExtractUuid(service_class_data);
 145       if (uuid.IsValid())
 146         uuids.push_back(uuid);
 147     }
 148   }
 149   return uuids;
 150 }
 151
 152 bool BluetoothDeviceMac::ExpectingPinCode() const {
 153   NOTIMPLEMENTED();
 154   return false;
 155 }
 156
 157 bool BluetoothDeviceMac::ExpectingPasskey() const {
 158   NOTIMPLEMENTED();
 159   return false;
 160 }
 161
 162 bool BluetoothDeviceMac::ExpectingConfirmation() const {
 163   NOTIMPLEMENTED();
 164   return false;
 165 }
 166
 167 void BluetoothDeviceMac::Connect(
 168     PairingDelegate* pairing_delegate,
 169     const base::Closure& callback,
 170     const ConnectErrorCallback& error_callback) {
 171   NOTIMPLEMENTED();
 172 }
 173
 174 void BluetoothDeviceMac::SetPinCode(const std::string& pincode) {
 175   NOTIMPLEMENTED();
 176 }
 177
 178 void BluetoothDeviceMac::SetPasskey(uint32 passkey) {
 179   NOTIMPLEMENTED();
 180 }
 181
 182 void BluetoothDeviceMac::ConfirmPairing() {
 183   NOTIMPLEMENTED();
 184 }
 185
 186 void BluetoothDeviceMac::RejectPairing() {
 187   NOTIMPLEMENTED();
 188 }
 189
 190 void BluetoothDeviceMac::CancelPairing() {
 191   NOTIMPLEMENTED();
 192 }
 193
 194 void BluetoothDeviceMac::Disconnect(const base::Closure& callback,
 195                                     const ErrorCallback& error_callback) {
 196   NOTIMPLEMENTED();
 197 }
 198
 199 void BluetoothDeviceMac::Forget(const ErrorCallback& error_callback) {
 200   NOTIMPLEMENTED();
 201 }
 202
 203 void BluetoothDeviceMac::ConnectToService(
 204     const BluetoothUUID& uuid,
 205     const ConnectToServiceCallback& callback,
 206     const ConnectToServiceErrorCallback& error_callback) {
 207   scoped_refptr<BluetoothSocketMac> socket = BluetoothSocketMac::CreateSocket();
 208   socket->Connect(
 209       device_.get(), uuid, base::Bind(callback, socket), error_callback);
 210 }
 211
 212 void BluetoothDeviceMac::ConnectToServiceInsecurely(
 213       const BluetoothUUID& uuid,
 214       const ConnectToServiceCallback& callback,
 215       const ConnectToServiceErrorCallback& error_callback) {
 216   error_callback.Run(kApiUnavailable);
 217 }
 218
 219 void BluetoothDeviceMac::CreateGattConnection(
 220       const GattConnectionCallback& callback,
 221       const ConnectErrorCallback& error_callback) {
 222   // TODO(armansito): Implement.
 223   error_callback.Run(ERROR_UNSUPPORTED_DEVICE);
 224 }
 225
 226 void BluetoothDeviceMac::StartConnectionMonitor(
 227     const base::Closure& callback,
 228     const ErrorCallback& error_callback) {
 229   NOTIMPLEMENTED();
 230 }
 231
 232 NSDate* BluetoothDeviceMac::GetLastInquiryUpdate() {
 233   return [device_ getLastInquiryUpdate];
 234 }
 235
 236 int BluetoothDeviceMac::GetHostTransmitPower(
 237     BluetoothHCITransmitPowerLevelType power_level_type) const {
 238   IOBluetoothHostController* controller =
 239       [IOBluetoothHostController defaultController];
 240
 241   // Bail if the undocumented API is unavailable on this machine.
 242   SEL selector = @selector(
 243       BluetoothHCIReadTransmitPowerLevel:inType:outTransmitPowerLevel:);
 244   if (![controller respondsToSelector:selector])
 245     return kUnknownPower;
 246
 247   BluetoothHCITransmitPowerLevel power_level;
 248   IOReturn result =
 249       [controller BluetoothHCIReadTransmitPowerLevel:[device_ connectionHandle]
 250                                               inType:power_level_type
 251                                outTransmitPowerLevel:&power_level];
 252   if (result != kIOReturnSuccess)
 253     return kUnknownPower;
 254
 255   return power_level;
 256 }
 257
 258 // static
 259 std::string BluetoothDeviceMac::GetDeviceAddress(IOBluetoothDevice* device) {
 260   return CanonicalizeAddress(base::SysNSStringToUTF8([device addressString]));
 261 }
 262
 263 }  // namespace device