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(IOBluetoothDevice* device)
  62     : device_([device retain]) {
  63 }
  64
  65 BluetoothClassicDeviceMac::~BluetoothClassicDeviceMac() {
  66 }
  67
  68 uint32 BluetoothClassicDeviceMac::GetBluetoothClass() const {
  69   return [device_ classOfDevice];
  70 }
  71
  72 std::string BluetoothClassicDeviceMac::GetDeviceName() const {
  73   return base::SysNSStringToUTF8([device_ name]);
  74 }
  75
  76 std::string BluetoothClassicDeviceMac::GetAddress() const {
  77   return GetDeviceAddress(device_);
  78 }
  79
  80 BluetoothDevice::VendorIDSource BluetoothClassicDeviceMac::GetVendorIDSource()
  81     const {
  82   return VENDOR_ID_UNKNOWN;
  83 }
  84
  85 uint16 BluetoothClassicDeviceMac::GetVendorID() const {
  86   return 0;
  87 }
  88
  89 uint16 BluetoothClassicDeviceMac::GetProductID() const {
  90   return 0;
  91 }
  92
  93 uint16 BluetoothClassicDeviceMac::GetDeviceID() const {
  94   return 0;
  95 }
  96
  97 bool BluetoothClassicDeviceMac::IsPaired() const {
  98   return [device_ isPaired];
  99 }
 100
 101 bool BluetoothClassicDeviceMac::IsConnected() const {
 102   return [device_ isConnected];
 103 }
 104
 105 bool BluetoothClassicDeviceMac::IsConnectable() const {
 106   return false;
 107 }
 108
 109 bool BluetoothClassicDeviceMac::IsConnecting() const {
 110   return false;
 111 }
 112
 113 BluetoothDevice::UUIDList BluetoothClassicDeviceMac::GetUUIDs() const {
 114   UUIDList uuids;
 115   for (IOBluetoothSDPServiceRecord* service_record in [device_ services]) {
 116     IOBluetoothSDPDataElement* service_class_data =
 117         [service_record getAttributeDataElement:
 118                             kBluetoothSDPAttributeIdentifierServiceClassIDList];
 119     if ([service_class_data getTypeDescriptor] ==
 120         kBluetoothSDPDataElementTypeDataElementSequence) {
 121       BluetoothUUID uuid = ExtractUuid(service_class_data);
 122       if (uuid.IsValid())
 123         uuids.push_back(uuid);
 124     }
 125   }
 126   return uuids;
 127 }
 128
 129 int16 BluetoothClassicDeviceMac::GetInquiryRSSI() const {
 130   return kUnknownPower;
 131 }
 132
 133 int16 BluetoothClassicDeviceMac::GetInquiryTxPower() const {
 134   NOTIMPLEMENTED();
 135   return kUnknownPower;
 136 }
 137
 138 bool BluetoothClassicDeviceMac::ExpectingPinCode() const {
 139   NOTIMPLEMENTED();
 140   return false;
 141 }
 142
 143 bool BluetoothClassicDeviceMac::ExpectingPasskey() const {
 144   NOTIMPLEMENTED();
 145   return false;
 146 }
 147
 148 bool BluetoothClassicDeviceMac::ExpectingConfirmation() const {
 149   NOTIMPLEMENTED();
 150   return false;
 151 }
 152
 153 void BluetoothClassicDeviceMac::GetConnectionInfo(
 154     const ConnectionInfoCallback& callback) {
 155   ConnectionInfo connection_info;
 156   if (![device_ isConnected]) {
 157     callback.Run(connection_info);
 158     return;
 159   }
 160
 161   connection_info.rssi = [device_ rawRSSI];
 162   // The API guarantees that +127 is returned in case the RSSI is not readable:
 163   // http://goo.gl/bpURYv
 164   if (connection_info.rssi == 127)
 165     connection_info.rssi = kUnknownPower;
 166
 167   connection_info.transmit_power =
 168       GetHostTransmitPower(kReadCurrentTransmitPowerLevel);
 169   connection_info.max_transmit_power =
 170       GetHostTransmitPower(kReadMaximumTransmitPowerLevel);
 171
 172   callback.Run(connection_info);
 173 }
 174
 175 void BluetoothClassicDeviceMac::Connect(
 176     PairingDelegate* pairing_delegate,
 177     const base::Closure& callback,
 178     const ConnectErrorCallback& error_callback) {
 179   NOTIMPLEMENTED();
 180 }
 181
 182 void BluetoothClassicDeviceMac::SetPinCode(const std::string& pincode) {
 183   NOTIMPLEMENTED();
 184 }
 185
 186 void BluetoothClassicDeviceMac::SetPasskey(uint32 passkey) {
 187   NOTIMPLEMENTED();
 188 }
 189
 190 void BluetoothClassicDeviceMac::ConfirmPairing() {
 191   NOTIMPLEMENTED();
 192 }
 193
 194 void BluetoothClassicDeviceMac::RejectPairing() {
 195   NOTIMPLEMENTED();
 196 }
 197
 198 void BluetoothClassicDeviceMac::CancelPairing() {
 199   NOTIMPLEMENTED();
 200 }
 201
 202 void BluetoothClassicDeviceMac::Disconnect(
 203     const base::Closure& callback,
 204     const ErrorCallback& error_callback) {
 205   NOTIMPLEMENTED();
 206 }
 207
 208 void BluetoothClassicDeviceMac::Forget(const ErrorCallback& error_callback) {
 209   NOTIMPLEMENTED();
 210 }
 211
 212 void BluetoothClassicDeviceMac::ConnectToService(
 213     const BluetoothUUID& uuid,
 214     const ConnectToServiceCallback& callback,
 215     const ConnectToServiceErrorCallback& error_callback) {
 216   scoped_refptr<BluetoothSocketMac> socket = BluetoothSocketMac::CreateSocket();
 217   socket->Connect(device_.get(), uuid, base::Bind(callback, socket),
 218                   error_callback);
 219 }
 220
 221 void BluetoothClassicDeviceMac::ConnectToServiceInsecurely(
 222     const BluetoothUUID& uuid,
 223     const ConnectToServiceCallback& callback,
 224     const ConnectToServiceErrorCallback& error_callback) {
 225   error_callback.Run(kApiUnavailable);
 226 }
 227
 228 void BluetoothClassicDeviceMac::CreateGattConnection(
 229     const GattConnectionCallback& callback,
 230     const ConnectErrorCallback& error_callback) {
 231   // TODO(armansito): Implement.
 232   error_callback.Run(ERROR_UNSUPPORTED_DEVICE);
 233 }
 234
 235 NSDate* BluetoothClassicDeviceMac::GetLastUpdateTime() const {
 236   return [device_ getLastInquiryUpdate];
 237 }
 238
 239 int BluetoothClassicDeviceMac::GetHostTransmitPower(
 240     BluetoothHCITransmitPowerLevelType power_level_type) const {
 241   IOBluetoothHostController* controller =
 242       [IOBluetoothHostController defaultController];
 243
 244   // Bail if the undocumented API is unavailable on this machine.
 245   SEL selector = @selector(BluetoothHCIReadTransmitPowerLevel:
 246                                                        inType:
 247                                         outTransmitPowerLevel:);
 248   if (![controller respondsToSelector:selector])
 249     return kUnknownPower;
 250
 251   BluetoothHCITransmitPowerLevel power_level;
 252   IOReturn result =
 253       [controller BluetoothHCIReadTransmitPowerLevel:[device_ connectionHandle]
 254                                               inType:power_level_type
 255                                outTransmitPowerLevel:&power_level];
 256   if (result != kIOReturnSuccess)
 257     return kUnknownPower;
 258
 259   return power_level;
 260 }
 261
 262 // static
 263 std::string BluetoothClassicDeviceMac::GetDeviceAddress(
 264     IOBluetoothDevice* device) {
 265   return CanonicalizeAddress(base::SysNSStringToUTF8([device addressString]));
 266 }
 267
 268 }  // namespace device