The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.server; |
| 18 | |
| 19 | import android.bluetooth.BluetoothA2dp; |
| 20 | import android.bluetooth.BluetoothClass; |
| 21 | import android.bluetooth.BluetoothDevice; |
| 22 | import android.bluetooth.BluetoothError; |
| 23 | import android.bluetooth.BluetoothIntent; |
| 24 | import android.bluetooth.IBluetoothDeviceCallback; |
| 25 | import android.content.Context; |
| 26 | import android.content.Intent; |
| 27 | import android.os.Handler; |
| 28 | import android.os.Message; |
| 29 | import android.os.RemoteException; |
| 30 | import android.util.Log; |
| 31 | |
| 32 | import java.util.HashMap; |
| 33 | |
| 34 | /** |
| 35 | * TODO: Move this to |
| 36 | * java/services/com/android/server/BluetoothEventLoop.java |
| 37 | * and make the contructor package private again. |
| 38 | * |
| 39 | * @hide |
| 40 | */ |
| 41 | class BluetoothEventLoop { |
| 42 | private static final String TAG = "BluetoothEventLoop"; |
| 43 | private static final boolean DBG = false; |
| 44 | |
| 45 | private int mNativeData; |
| 46 | private Thread mThread; |
The Android Open Source Project | b2a3dd8 | 2009-03-09 11:52:12 -0700 | [diff] [blame^] | 47 | private boolean mStarted; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 48 | private boolean mInterrupted; |
| 49 | private HashMap<String, Integer> mPasskeyAgentRequestData; |
| 50 | private HashMap<String, IBluetoothDeviceCallback> mGetRemoteServiceChannelCallbacks; |
| 51 | private BluetoothDeviceService mBluetoothService; |
| 52 | private Context mContext; |
| 53 | |
| 54 | private static final int EVENT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY = 1; |
| 55 | |
| 56 | // The time (in millisecs) to delay the pairing attempt after the first |
| 57 | // auto pairing attempt fails. We use an exponential delay with |
| 58 | // INIT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY as the initial value and |
| 59 | // MAX_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY as the max value. |
| 60 | private static final long INIT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY = 3000; |
| 61 | private static final long MAX_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY = 12000; |
| 62 | |
| 63 | private static final String BLUETOOTH_ADMIN_PERM = android.Manifest.permission.BLUETOOTH_ADMIN; |
| 64 | private static final String BLUETOOTH_PERM = android.Manifest.permission.BLUETOOTH; |
| 65 | |
| 66 | private final Handler mHandler = new Handler() { |
| 67 | @Override |
| 68 | public void handleMessage(Message msg) { |
| 69 | switch (msg.what) { |
| 70 | case EVENT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY: |
| 71 | String address = (String)msg.obj; |
| 72 | if (address != null) { |
| 73 | mBluetoothService.createBond(address); |
| 74 | return; |
| 75 | } |
| 76 | break; |
| 77 | } |
| 78 | } |
| 79 | }; |
| 80 | |
| 81 | static { classInitNative(); } |
| 82 | private static native void classInitNative(); |
| 83 | |
| 84 | /* pacakge */ BluetoothEventLoop(Context context, BluetoothDeviceService bluetoothService) { |
| 85 | mBluetoothService = bluetoothService; |
| 86 | mContext = context; |
| 87 | mPasskeyAgentRequestData = new HashMap(); |
| 88 | mGetRemoteServiceChannelCallbacks = new HashMap(); |
| 89 | initializeNativeDataNative(); |
| 90 | } |
| 91 | private native void initializeNativeDataNative(); |
| 92 | |
| 93 | protected void finalize() throws Throwable { |
| 94 | try { |
| 95 | cleanupNativeDataNative(); |
| 96 | } finally { |
| 97 | super.finalize(); |
| 98 | } |
| 99 | } |
| 100 | private native void cleanupNativeDataNative(); |
| 101 | |
| 102 | /* pacakge */ HashMap<String, IBluetoothDeviceCallback> getRemoteServiceChannelCallbacks() { |
| 103 | return mGetRemoteServiceChannelCallbacks; |
| 104 | } |
| 105 | |
| 106 | /* pacakge */ HashMap<String, Integer> getPasskeyAgentRequestData() { |
| 107 | return mPasskeyAgentRequestData; |
| 108 | } |
| 109 | |
| 110 | private synchronized boolean waitForAndDispatchEvent(int timeout_ms) { |
| 111 | return waitForAndDispatchEventNative(timeout_ms); |
| 112 | } |
| 113 | private native boolean waitForAndDispatchEventNative(int timeout_ms); |
| 114 | |
| 115 | /* package */ synchronized void start() { |
| 116 | |
| 117 | if (mThread != null) { |
| 118 | // Already running. |
| 119 | return; |
| 120 | } |
| 121 | mThread = new Thread("Bluetooth Event Loop") { |
| 122 | @Override |
| 123 | public void run() { |
| 124 | try { |
| 125 | if (setUpEventLoopNative()) { |
The Android Open Source Project | b2a3dd8 | 2009-03-09 11:52:12 -0700 | [diff] [blame^] | 126 | mStarted = true; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 127 | while (!mInterrupted) { |
| 128 | waitForAndDispatchEvent(0); |
| 129 | sleep(500); |
| 130 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 131 | } |
The Android Open Source Project | b2a3dd8 | 2009-03-09 11:52:12 -0700 | [diff] [blame^] | 132 | // tear down even in the error case to clean |
| 133 | // up anything we started to setup |
| 134 | tearDownEventLoopNative(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 135 | } catch (InterruptedException e) { } |
| 136 | if (DBG) log("Event Loop thread finished"); |
The Android Open Source Project | b2a3dd8 | 2009-03-09 11:52:12 -0700 | [diff] [blame^] | 137 | mThread = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 138 | } |
| 139 | }; |
| 140 | if (DBG) log("Starting Event Loop thread"); |
| 141 | mInterrupted = false; |
| 142 | mThread.start(); |
| 143 | } |
| 144 | private native boolean setUpEventLoopNative(); |
| 145 | private native void tearDownEventLoopNative(); |
| 146 | |
| 147 | public synchronized void stop() { |
| 148 | if (mThread != null) { |
| 149 | mInterrupted = true; |
| 150 | try { |
| 151 | mThread.join(); |
| 152 | mThread = null; |
| 153 | } catch (InterruptedException e) { |
| 154 | Log.i(TAG, "Interrupted waiting for Event Loop thread to join"); |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | public synchronized boolean isEventLoopRunning() { |
The Android Open Source Project | b2a3dd8 | 2009-03-09 11:52:12 -0700 | [diff] [blame^] | 160 | return mThread != null && mStarted; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | /*package*/ void onModeChanged(String bluezMode) { |
| 164 | int mode = BluetoothDeviceService.bluezStringToScanMode(bluezMode); |
| 165 | if (mode >= 0) { |
| 166 | Intent intent = new Intent(BluetoothIntent.SCAN_MODE_CHANGED_ACTION); |
| 167 | intent.putExtra(BluetoothIntent.SCAN_MODE, mode); |
| 168 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | private void onDiscoveryStarted() { |
| 173 | mBluetoothService.setIsDiscovering(true); |
| 174 | Intent intent = new Intent(BluetoothIntent.DISCOVERY_STARTED_ACTION); |
| 175 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 176 | } |
| 177 | private void onDiscoveryCompleted() { |
| 178 | mBluetoothService.setIsDiscovering(false); |
| 179 | Intent intent = new Intent(BluetoothIntent.DISCOVERY_COMPLETED_ACTION); |
| 180 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 181 | } |
| 182 | |
| 183 | private void onRemoteDeviceFound(String address, int deviceClass, short rssi) { |
| 184 | Intent intent = new Intent(BluetoothIntent.REMOTE_DEVICE_FOUND_ACTION); |
| 185 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 186 | intent.putExtra(BluetoothIntent.CLASS, deviceClass); |
| 187 | intent.putExtra(BluetoothIntent.RSSI, rssi); |
| 188 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 189 | } |
| 190 | private void onRemoteDeviceDisappeared(String address) { |
| 191 | Intent intent = new Intent(BluetoothIntent.REMOTE_DEVICE_DISAPPEARED_ACTION); |
| 192 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 193 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 194 | } |
| 195 | private void onRemoteClassUpdated(String address, int deviceClass) { |
| 196 | Intent intent = new Intent(BluetoothIntent.REMOTE_DEVICE_CLASS_UPDATED_ACTION); |
| 197 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 198 | intent.putExtra(BluetoothIntent.CLASS, deviceClass); |
| 199 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 200 | } |
| 201 | private void onRemoteDeviceConnected(String address) { |
| 202 | Intent intent = new Intent(BluetoothIntent.REMOTE_DEVICE_CONNECTED_ACTION); |
| 203 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 204 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 205 | } |
| 206 | private void onRemoteDeviceDisconnectRequested(String address) { |
| 207 | Intent intent = new Intent(BluetoothIntent.REMOTE_DEVICE_DISCONNECT_REQUESTED_ACTION); |
| 208 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 209 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 210 | } |
| 211 | private void onRemoteDeviceDisconnected(String address) { |
| 212 | Intent intent = new Intent(BluetoothIntent.REMOTE_DEVICE_DISCONNECTED_ACTION); |
| 213 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 214 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 215 | } |
| 216 | private void onRemoteNameUpdated(String address, String name) { |
| 217 | Intent intent = new Intent(BluetoothIntent.REMOTE_NAME_UPDATED_ACTION); |
| 218 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 219 | intent.putExtra(BluetoothIntent.NAME, name); |
| 220 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 221 | } |
| 222 | private void onRemoteNameFailed(String address) { |
| 223 | Intent intent = new Intent(BluetoothIntent.REMOTE_NAME_FAILED_ACTION); |
| 224 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 225 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 226 | } |
| 227 | private void onRemoteNameChanged(String address, String name) { |
| 228 | Intent intent = new Intent(BluetoothIntent.REMOTE_NAME_UPDATED_ACTION); |
| 229 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 230 | intent.putExtra(BluetoothIntent.NAME, name); |
| 231 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 232 | } |
| 233 | |
| 234 | private void onCreateBondingResult(String address, int result) { |
| 235 | address = address.toUpperCase(); |
| 236 | if (result == BluetoothError.SUCCESS) { |
| 237 | mBluetoothService.getBondState().setBondState(address, BluetoothDevice.BOND_BONDED); |
| 238 | if (mBluetoothService.getBondState().isAutoPairingAttemptsInProgress(address)) { |
| 239 | mBluetoothService.getBondState().clearPinAttempts(address); |
| 240 | } |
| 241 | } else if (result == BluetoothDevice.UNBOND_REASON_AUTH_FAILED && |
| 242 | mBluetoothService.getBondState().getAttempt(address) == 1) { |
| 243 | mBluetoothService.getBondState().addAutoPairingFailure(address); |
| 244 | pairingAttempt(address, result); |
| 245 | } else if (result == BluetoothDevice.UNBOND_REASON_REMOTE_DEVICE_DOWN && |
| 246 | mBluetoothService.getBondState().isAutoPairingAttemptsInProgress(address)) { |
| 247 | pairingAttempt(address, result); |
| 248 | } else { |
| 249 | mBluetoothService.getBondState().setBondState(address, |
| 250 | BluetoothDevice.BOND_NOT_BONDED, result); |
| 251 | if (mBluetoothService.getBondState().isAutoPairingAttemptsInProgress(address)) { |
| 252 | mBluetoothService.getBondState().clearPinAttempts(address); |
| 253 | } |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | private void pairingAttempt(String address, int result) { |
| 258 | // This happens when our initial guess of "0000" as the pass key |
| 259 | // fails. Try to create the bond again and display the pin dialog |
| 260 | // to the user. Use back-off while posting the delayed |
| 261 | // message. The initial value is |
| 262 | // INIT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY and the max value is |
| 263 | // MAX_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY. If the max value is |
| 264 | // reached, display an error to the user. |
| 265 | int attempt = mBluetoothService.getBondState().getAttempt(address); |
| 266 | if (attempt * INIT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY > |
| 267 | MAX_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY) { |
| 268 | mBluetoothService.getBondState().clearPinAttempts(address); |
| 269 | mBluetoothService.getBondState().setBondState(address, |
| 270 | BluetoothDevice.BOND_NOT_BONDED, result); |
| 271 | return; |
| 272 | } |
| 273 | |
| 274 | Message message = mHandler.obtainMessage(EVENT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY); |
| 275 | message.obj = address; |
| 276 | boolean postResult = mHandler.sendMessageDelayed(message, |
| 277 | attempt * INIT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY); |
| 278 | if (!postResult) { |
| 279 | mBluetoothService.getBondState().clearPinAttempts(address); |
| 280 | mBluetoothService.getBondState().setBondState(address, |
| 281 | BluetoothDevice.BOND_NOT_BONDED, result); |
| 282 | return; |
| 283 | } |
| 284 | mBluetoothService.getBondState().attempt(address); |
| 285 | } |
| 286 | |
| 287 | private void onBondingCreated(String address) { |
| 288 | mBluetoothService.getBondState().setBondState(address.toUpperCase(), |
| 289 | BluetoothDevice.BOND_BONDED); |
| 290 | } |
| 291 | |
| 292 | private void onBondingRemoved(String address) { |
| 293 | mBluetoothService.getBondState().setBondState(address.toUpperCase(), |
| 294 | BluetoothDevice.BOND_NOT_BONDED, BluetoothDevice.UNBOND_REASON_REMOVED); |
| 295 | } |
| 296 | |
| 297 | private void onNameChanged(String name) { |
| 298 | Intent intent = new Intent(BluetoothIntent.NAME_CHANGED_ACTION); |
| 299 | intent.putExtra(BluetoothIntent.NAME, name); |
| 300 | mContext.sendBroadcast(intent, BLUETOOTH_PERM); |
| 301 | } |
| 302 | |
| 303 | private void onPasskeyAgentRequest(String address, int nativeData) { |
| 304 | address = address.toUpperCase(); |
| 305 | mPasskeyAgentRequestData.put(address, new Integer(nativeData)); |
| 306 | |
| 307 | if (mBluetoothService.getBondState().getBondState(address) == |
| 308 | BluetoothDevice.BOND_BONDING) { |
| 309 | // we initiated the bonding |
| 310 | int btClass = mBluetoothService.getRemoteClass(address); |
| 311 | |
| 312 | // try 0000 once if the device looks dumb |
| 313 | switch (BluetoothClass.Device.getDevice(btClass)) { |
| 314 | case BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET: |
| 315 | case BluetoothClass.Device.AUDIO_VIDEO_HANDSFREE: |
| 316 | case BluetoothClass.Device.AUDIO_VIDEO_HEADPHONES: |
| 317 | case BluetoothClass.Device.AUDIO_VIDEO_PORTABLE_AUDIO: |
| 318 | case BluetoothClass.Device.AUDIO_VIDEO_CAR_AUDIO: |
| 319 | case BluetoothClass.Device.AUDIO_VIDEO_HIFI_AUDIO: |
| 320 | if (!mBluetoothService.getBondState().hasAutoPairingFailed(address) && |
| 321 | !mBluetoothService.getBondState().isAutoPairingBlacklisted(address)) { |
| 322 | mBluetoothService.getBondState().attempt(address); |
| 323 | mBluetoothService.setPin(address, BluetoothDevice.convertPinToBytes("0000")); |
| 324 | return; |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | Intent intent = new Intent(BluetoothIntent.PAIRING_REQUEST_ACTION); |
| 329 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 330 | mContext.sendBroadcast(intent, BLUETOOTH_ADMIN_PERM); |
| 331 | } |
| 332 | |
| 333 | private void onPasskeyAgentCancel(String address) { |
| 334 | address = address.toUpperCase(); |
| 335 | mPasskeyAgentRequestData.remove(address); |
| 336 | Intent intent = new Intent(BluetoothIntent.PAIRING_CANCEL_ACTION); |
| 337 | intent.putExtra(BluetoothIntent.ADDRESS, address); |
| 338 | mContext.sendBroadcast(intent, BLUETOOTH_ADMIN_PERM); |
| 339 | mBluetoothService.getBondState().setBondState(address, BluetoothDevice.BOND_NOT_BONDED, |
| 340 | BluetoothDevice.UNBOND_REASON_AUTH_CANCELED); |
| 341 | } |
| 342 | |
| 343 | private boolean onAuthAgentAuthorize(String address, String service, String uuid) { |
| 344 | boolean authorized = false; |
| 345 | if (service.endsWith("service_audio")) { |
| 346 | BluetoothA2dp a2dp = new BluetoothA2dp(mContext); |
| 347 | authorized = a2dp.getSinkPriority(address) > BluetoothA2dp.PRIORITY_OFF; |
| 348 | if (authorized) { |
| 349 | Log.i(TAG, "Allowing incoming A2DP connection from " + address); |
| 350 | } else { |
| 351 | Log.i(TAG, "Rejecting incoming A2DP connection from " + address); |
| 352 | } |
| 353 | } else { |
| 354 | Log.i(TAG, "Rejecting incoming " + service + " connection from " + address); |
| 355 | } |
| 356 | return authorized; |
| 357 | } |
| 358 | |
| 359 | private void onAuthAgentCancel(String address, String service, String uuid) { |
| 360 | // We immediately response to DBUS Authorize() so this should not |
| 361 | // usually happen |
| 362 | log("onAuthAgentCancel(" + address + ", " + service + ", " + uuid + ")"); |
| 363 | } |
| 364 | |
| 365 | private void onGetRemoteServiceChannelResult(String address, int channel) { |
| 366 | IBluetoothDeviceCallback callback = mGetRemoteServiceChannelCallbacks.get(address); |
| 367 | if (callback != null) { |
| 368 | mGetRemoteServiceChannelCallbacks.remove(address); |
| 369 | try { |
| 370 | callback.onGetRemoteServiceChannelResult(address, channel); |
| 371 | } catch (RemoteException e) {} |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | private static void log(String msg) { |
| 376 | Log.d(TAG, msg); |
| 377 | } |
| 378 | } |