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 bool BluetoothDeviceMac::IsPaired() const {
  97   return [device_ isPaired];
  98 }
  99
 100 bool BluetoothDeviceMac::IsConnected() const {
 101   return [device_ isConnected];
 102 }
 103
 104 bool BluetoothDeviceMac::IsConnectable() const {
 105   return false;
 106 }
 107
 108 bool BluetoothDeviceMac::IsConnecting() const {
 109   return false;
 110 }
 111
 112 BluetoothDevice::UUIDList BluetoothDeviceMac::GetUUIDs() const {
 113   UUIDList uuids;
 114   for (IOBluetoothSDPServiceRecord* service_record in [device_ services]) {
 115     IOBluetoothSDPDataElement* service_class_data =
 116         [service_record getAttributeDataElement:
 117             kBluetoothSDPAttributeIdentifierServiceClassIDList];
 118     if ([service_class_data getTypeDescriptor] ==
 119             kBluetoothSDPDataElementTypeDataElementSequence) {
 120       BluetoothUUID uuid = ExtractUuid(service_class_data);
 121       if (uuid.IsValid())
 122         uuids.push_back(uuid);
 123     }
 124   }
 125   return uuids;
 126 }
 127
 128 int16 BluetoothDeviceMac::GetInquiryRSSI() const {
 129   return kUnknownPower;
 130 }
 131
 132 int16 BluetoothDeviceMac::GetInquiryTxPower() const {
 133   NOTIMPLEMENTED();
 134   return kUnknownPower;
 135 }
 136
 137 bool BluetoothDeviceMac::ExpectingPinCode() const {
 138   NOTIMPLEMENTED();
 139   return false;
 140 }
 141
 142 bool BluetoothDeviceMac::ExpectingPasskey() const {
 143   NOTIMPLEMENTED();
 144   return false;
 145 }
 146
 147 bool BluetoothDeviceMac::ExpectingConfirmation() const {
 148   NOTIMPLEMENTED();
 149   return false;
 150 }
 151
 152 void BluetoothDeviceMac::GetConnectionInfo(
 153     const ConnectionInfoCallback& callback) {
 154   ConnectionInfo connection_info;
 155   if (![device_ isConnected]) {
 156     callback.Run(connection_info);
 157     return;
 158   }
 159
 160   connection_info.rssi = [device_ rawRSSI];
 161   // The API guarantees that +127 is returned in case the RSSI is not readable:
 162   // http://goo.gl/bpURYv
 163   if (connection_info.rssi == 127)
 164     connection_info.rssi = kUnknownPower;
 165
 166   connection_info.transmit_power =
 167       GetHostTransmitPower(kReadCurrentTransmitPowerLevel);
 168   connection_info.max_transmit_power =
 169       GetHostTransmitPower(kReadMaximumTransmitPowerLevel);
 170
 171   callback.Run(connection_info);
 172 }
 173
 174 void BluetoothDeviceMac::Connect(
 175     PairingDelegate* pairing_delegate,
 176     const base::Closure& callback,
 177     const ConnectErrorCallback& error_callback) {
 178   NOTIMPLEMENTED();
 179 }
 180
 181 void BluetoothDeviceMac::SetPinCode(const std::string& pincode) {
 182   NOTIMPLEMENTED();
 183 }
 184
 185 void BluetoothDeviceMac::SetPasskey(uint32 passkey) {
 186   NOTIMPLEMENTED();
 187 }
 188
 189 void BluetoothDeviceMac::ConfirmPairing() {
 190   NOTIMPLEMENTED();
 191 }
 192
 193 void BluetoothDeviceMac::RejectPairing() {
 194   NOTIMPLEMENTED();
 195 }
 196
 197 void BluetoothDeviceMac::CancelPairing() {
 198   NOTIMPLEMENTED();
 199 }
 200
 201 void BluetoothDeviceMac::Disconnect(const base::Closure& callback,
 202                                     const ErrorCallback& error_callback) {
 203   NOTIMPLEMENTED();
 204 }
 205
 206 void BluetoothDeviceMac::Forget(const ErrorCallback& error_callback) {
 207   NOTIMPLEMENTED();
 208 }
 209
 210 void BluetoothDeviceMac::ConnectToService(
 211     const BluetoothUUID& uuid,
 212     const ConnectToServiceCallback& callback,
 213     const ConnectToServiceErrorCallback& error_callback) {
 214   scoped_refptr<BluetoothSocketMac> socket = BluetoothSocketMac::CreateSocket();
 215   socket->Connect(
 216       device_.get(), uuid, base::Bind(callback, socket), error_callback);
 217 }
 218
 219 void BluetoothDeviceMac::ConnectToServiceInsecurely(
 220       const BluetoothUUID& uuid,
 221       const ConnectToServiceCallback& callback,
 222       const ConnectToServiceErrorCallback& error_callback) {
 223   error_callback.Run(kApiUnavailable);
 224 }
 225
 226 void BluetoothDeviceMac::CreateGattConnection(
 227       const GattConnectionCallback& callback,
 228       const ConnectErrorCallback& error_callback) {
 229   // TODO(armansito): Implement.
 230   error_callback.Run(ERROR_UNSUPPORTED_DEVICE);
 231 }
 232
 233 NSDate* BluetoothDeviceMac::GetLastInquiryUpdate() {
 234   return [device_ getLastInquiryUpdate];
 235 }
 236
 237 int BluetoothDeviceMac::GetHostTransmitPower(
 238     BluetoothHCITransmitPowerLevelType power_level_type) const {
 239   IOBluetoothHostController* controller =
 240       [IOBluetoothHostController defaultController];
 241
 242   // Bail if the undocumented API is unavailable on this machine.
 243   SEL selector = @selector(
 244       BluetoothHCIReadTransmitPowerLevel:inType:outTransmitPowerLevel:);
 245   if (![controller respondsToSelector:selector])
 246     return kUnknownPower;
 247
 248   BluetoothHCITransmitPowerLevel power_level;
 249   IOReturn result =
 250       [controller BluetoothHCIReadTransmitPowerLevel:[device_ connectionHandle]
 251                                               inType:power_level_type
 252                                outTransmitPowerLevel:&power_level];
 253   if (result != kIOReturnSuccess)
 254     return kUnknownPower;
 255
 256   return power_level;
 257 }
 258
 259 // static
 260 std::string BluetoothDeviceMac::GetDeviceAddress(IOBluetoothDevice* device) {
 261   return CanonicalizeAddress(base::SysNSStringToUTF8([device addressString]));
 262 }
 263
 264 }  // namespace device