RemoteDevices.java revision 6654f5c903de510a70f9e72cd5ad7837b615d93f 
1/*
2 * Copyright (C) 2012 Google Inc.
3 */
4
5package com.android.bluetooth.btservice;
6
7import android.bluetooth.BluetoothAdapter;
8import android.bluetooth.BluetoothClass;
9import android.bluetooth.BluetoothDevice;
10import android.content.Context;
11import android.content.Intent;
12import android.os.Handler;
13import android.os.Message;
14import android.os.ParcelUuid;
15import android.util.Log;
16
17import com.android.bluetooth.Utils;
18import com.android.bluetooth.btservice.RemoteDevices.DeviceProperties;
19
20import java.util.ArrayList;
21import java.util.HashMap;
22import java.util.LinkedList;
23
24
25final class RemoteDevices {
26    private static final boolean DBG = true;
27    private static final String TAG = "BluetoothRemoteDevices";
28
29    private static Context mContext;
30    private static BluetoothAdapter mAdapter;
31    private static AdapterService mAdapterService;
32    private static ArrayList<BluetoothDevice> mSdpTracker;
33
34    private Object mObject = new Object();
35
36    private static final int UUID_INTENT_DELAY = 6000;
37    private static final int MESSAGE_UUID_INTENT = 1;
38
39    private HashMap<BluetoothDevice, DeviceProperties> mDevices;
40    private static RemoteDevices sInstance;
41
42    private RemoteDevices(AdapterService service, Context context) {
43        mAdapter = BluetoothAdapter.getDefaultAdapter();
44        mContext = context;
45        mAdapterService = service;
46        mSdpTracker = new ArrayList<BluetoothDevice>();
47        mDevices = new HashMap<BluetoothDevice, DeviceProperties>();
48    }
49
50    static synchronized RemoteDevices getInstance(AdapterService service, Context context) {
51        if (sInstance == null)  {
52            sInstance = new RemoteDevices(service, context);
53        } else {
54            mContext = context;
55            mAdapterService = service;
56        }
57        return sInstance;
58    }
59
60    public void init() {
61        mSdpTracker.clear();
62        mDevices.clear();
63    }
64
65    public Object Clone() throws CloneNotSupportedException {
66        throw new CloneNotSupportedException();
67    }
68
69    DeviceProperties getDeviceProperties(BluetoothDevice device) {
70        synchronized (mDevices) {
71            return mDevices.get(device);
72        }
73    }
74
75    BluetoothDevice getDevice(byte[] address) {
76        for (BluetoothDevice dev : mDevices.keySet()) {
77            if (dev.getAddress().equals(Utils.getAddressStringFromByte(address))) {
78                return dev;
79            }
80        }
81        return null;
82    }
83
84    DeviceProperties addDeviceProperties(byte[] address) {
85        synchronized (mDevices) {
86            DeviceProperties prop = new DeviceProperties();
87            BluetoothDevice device =
88                    mAdapter.getRemoteDevice(Utils.getAddressStringFromByte(address));
89            mDevices.put(device, prop);
90            return prop;
91        }
92    }
93
94    class DeviceProperties {
95        private String mName;
96        private byte[] mAddress;
97        private int mBluetoothClass;
98        private short mRssi;
99        private ParcelUuid[] mUuids;
100        private int mDeviceType;
101        private String mAlias;
102        private int mBondState;
103
104        DeviceProperties() {
105            mBondState = BluetoothDevice.BOND_NONE;
106        }
107
108        /**
109         * @return the mName
110         */
111        String getName() {
112            synchronized (mObject) {
113                return mName;
114            }
115        }
116
117        /**
118         * @return the mClass
119         */
120        int getBluetoothClass() {
121            synchronized (mObject) {
122                return mBluetoothClass;
123            }
124        }
125
126        /**
127         * @return the mUuids
128         */
129        ParcelUuid[] getUuids() {
130            synchronized (mObject) {
131                return mUuids;
132            }
133        }
134
135        /**
136         * @return the mAddress
137         */
138        byte[] getAddress() {
139            synchronized (mObject) {
140                return mAddress;
141            }
142        }
143
144        /**
145         * @return mRssi
146         */
147        short getRssi() {
148            synchronized (mObject) {
149                return mRssi;
150            }
151        }
152
153        /**
154         *
155         * @return mDeviceType
156         */
157        int getDeviceType() {
158            synchronized (mObject) {
159                return mDeviceType;
160            }
161        }
162
163        /**
164         * @return the mAlias
165         */
166        String getAlias() {
167            synchronized (mObject) {
168                return mAlias;
169            }
170        }
171
172        /**
173         * @param mAlias the mAlias to set
174         */
175        void setAlias(String mAlias) {
176            synchronized (mObject) {
177                mAdapterService.setDevicePropertyNative(mAddress,
178                    AbstractionLayer.BT_PROPERTY_REMOTE_FRIENDLY_NAME, mAlias.getBytes());
179            }
180        }
181
182        /**
183         * @param mBondState the mBondState to set
184         */
185        void setBondState(int mBondState) {
186            synchronized (mObject) {
187                this.mBondState = mBondState;
188            }
189        }
190
191        /**
192         * @return the mBondState
193         */
194        int getBondState() {
195            synchronized (mObject) {
196                return mBondState;
197            }
198        }
199    }
200
201
202    private void sendUuidIntent(BluetoothDevice device) {
203        DeviceProperties prop = getDeviceProperties(device);
204        Intent intent = new Intent(BluetoothDevice.ACTION_UUID);
205        intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
206        intent.putExtra(BluetoothDevice.EXTRA_UUID, prop == null? null: prop.mUuids);
207        mContext.sendBroadcast(intent, AdapterService.BLUETOOTH_ADMIN_PERM);
208
209        //Remove the outstanding UUID request
210        mSdpTracker.remove(device);
211    }
212
213    void devicePropertyChangedCallback(byte[] address, int[] types, byte[][] values) {
214        Intent intent;
215        byte[] val;
216        int type;
217        BluetoothDevice bdDevice = getDevice(address);
218        DeviceProperties device;
219        if (bdDevice == null) {
220            device = addDeviceProperties(address);
221            bdDevice = getDevice(address);
222        } else {
223            device = getDeviceProperties(bdDevice);
224        }
225
226        for (int j = 0; j < types.length; j++) {
227            type = types[j];
228            val = values[j];
229            synchronized(mObject) {
230                switch (type) {
231                    case AbstractionLayer.BT_PROPERTY_BDNAME:
232                        device.mName = new String(val);
233                        intent = new Intent(BluetoothDevice.ACTION_NAME_CHANGED);
234                        intent.putExtra(BluetoothDevice.EXTRA_DEVICE, bdDevice);
235                        intent.putExtra(BluetoothDevice.EXTRA_NAME, device.mName);
236                        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
237                        mContext.sendBroadcast(intent, mAdapterService.BLUETOOTH_PERM);
238                        debugLog("Remote Device name is: " + device.mName);
239                        break;
240                    case AbstractionLayer.BT_PROPERTY_REMOTE_FRIENDLY_NAME:
241                        // TODO(BT) is null device.mAlias a valid senario?
242                        if (device.mAlias != null) {
243                            System.arraycopy(val, 0, device.mAlias, 0, val.length);
244                        }
245                        break;
246                    case AbstractionLayer.BT_PROPERTY_BDADDR:
247                        device.mAddress = val;
248                        debugLog("Remote Address is:" + Utils.getAddressStringFromByte(val));
249                        break;
250                    case AbstractionLayer.BT_PROPERTY_CLASS_OF_DEVICE:
251                        device.mBluetoothClass =  Utils.byteArrayToInt(val);
252                        intent = new Intent(BluetoothDevice.ACTION_CLASS_CHANGED);
253                        intent.putExtra(BluetoothDevice.EXTRA_DEVICE, bdDevice);
254                        intent.putExtra(BluetoothDevice.EXTRA_CLASS,
255                                new BluetoothClass(device.mBluetoothClass));
256                        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
257                        mContext.sendBroadcast(intent, mAdapterService.BLUETOOTH_PERM);
258                        debugLog("Remote class is:" + device.mBluetoothClass);
259                        break;
260                    case AbstractionLayer.BT_PROPERTY_UUIDS:
261                        int numUuids = val.length/AbstractionLayer.BT_UUID_SIZE;
262                        device.mUuids = Utils.byteArrayToUuid(val);
263                        sendUuidIntent(bdDevice);
264                        break;
265                    case AbstractionLayer.BT_PROPERTY_TYPE_OF_DEVICE:
266                        device.mDeviceType = Utils.byteArrayToInt(val);
267                        break;
268                    case AbstractionLayer.BT_PROPERTY_REMOTE_RSSI:
269                        device.mRssi = Utils.byteArrayToShort(val);
270                        break;
271                }
272            }
273        }
274    }
275
276    void deviceFoundCallback(byte[] address) {
277        // The device properties are already registered - we can send the intent
278        // now
279        BluetoothDevice device = getDevice(address);
280        debugLog("deviceFoundCallback: Remote Address is:" + device);
281        DeviceProperties deviceProp = getDeviceProperties(device);
282        if (deviceProp == null) {
283            errorLog("Device Properties is null for Device:" + device);
284            return;
285        }
286
287        Intent intent = new Intent(BluetoothDevice.ACTION_FOUND);
288        intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
289        intent.putExtra(BluetoothDevice.EXTRA_CLASS,
290                new BluetoothClass(Integer.valueOf(deviceProp.mBluetoothClass)));
291        intent.putExtra(BluetoothDevice.EXTRA_RSSI, deviceProp.mRssi);
292        intent.putExtra(BluetoothDevice.EXTRA_NAME, deviceProp.mName);
293
294        mContext.sendBroadcast(intent, mAdapterService.BLUETOOTH_PERM);
295    }
296
297    void pinRequestCallback(byte[] address, byte[] name, int cod) {
298        //TODO(BT): Get wakelock and update name and cod
299        BluetoothDevice bdDevice = getDevice(address);
300        if (bdDevice == null) {
301            addDeviceProperties(address);
302        }
303        infoLog("pinRequestCallback: " + address + " name:" + name + " cod:" +
304                cod);
305        Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
306        intent.putExtra(BluetoothDevice.EXTRA_DEVICE, getDevice(address));
307        intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
308                BluetoothDevice.PAIRING_VARIANT_PIN);
309        mContext.sendBroadcast(intent, mAdapterService.BLUETOOTH_ADMIN_PERM);
310        return;
311    }
312
313    void sspRequestCallback(byte[] address, byte[] name, int cod, int pairingVariant,
314            int passkey) {
315        //TODO(BT): Get wakelock and update name and cod
316        BluetoothDevice bdDevice = getDevice(address);
317        if (bdDevice == null) {
318            addDeviceProperties(address);
319        }
320
321        infoLog("sspRequestCallback: " + address + " name: " + name + " cod: " +
322                cod + " pairingVariant " + pairingVariant + " passkey: " + passkey);
323        int variant;
324        boolean displayPasskey = false;
325        if (pairingVariant == AbstractionLayer.BT_SSP_VARIANT_PASSKEY_CONFIRMATION) {
326            variant = BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION;
327            displayPasskey = true;
328        } else if (pairingVariant == AbstractionLayer.BT_SSP_VARIANT_CONSENT) {
329            variant = BluetoothDevice.PAIRING_VARIANT_CONSENT;
330        } else if (pairingVariant == AbstractionLayer.BT_SSP_VARIANT_PASSKEY_ENTRY) {
331            variant = BluetoothDevice.PAIRING_VARIANT_PASSKEY;
332        } else if (pairingVariant == AbstractionLayer.BT_SSP_VARIANT_PASSKEY_NOTIFICATION) {
333            variant = BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY;
334	    displayPasskey = true;
335        } else {
336            errorLog("SSP Pairing variant not present");
337            return;
338        }
339        BluetoothDevice device = getDevice(address);
340        if (device == null) {
341           warnLog("Device is not known for:" + Utils.getAddressStringFromByte(address));
342           addDeviceProperties(address);
343           device = getDevice(address);
344        }
345        Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
346        intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
347        if (displayPasskey) {
348            intent.putExtra(BluetoothDevice.EXTRA_PAIRING_KEY, passkey);
349        }
350        intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, variant);
351        mContext.sendBroadcast(intent, mAdapterService.BLUETOOTH_ADMIN_PERM);
352    }
353
354
355    void fetchUuids(BluetoothDevice device) {
356        if (mSdpTracker.contains(device)) return;
357        mSdpTracker.add(device);
358
359        Message message = mHandler.obtainMessage(MESSAGE_UUID_INTENT);
360        message.obj = device;
361        mHandler.sendMessageDelayed(message, UUID_INTENT_DELAY);
362
363        //mAdapterService.getDevicePropertyNative(Utils.getBytesFromAddress(device.getAddress()), AbstractionLayer.BT_PROPERTY_UUIDS);
364        mAdapterService.getRemoteServicesNative(Utils.getBytesFromAddress(device.getAddress()));
365    }
366
367    private final Handler mHandler = new Handler() {
368        @Override
369        public void handleMessage(Message msg) {
370            switch (msg.what) {
371            case MESSAGE_UUID_INTENT:
372                BluetoothDevice device = (BluetoothDevice)msg.obj;
373                if (device != null) {
374                    sendUuidIntent(device);
375                }
376                break;
377            }
378        }
379    };
380
381    private void errorLog(String msg) {
382        Log.e(TAG, msg);
383    }
384
385    private void debugLog(String msg) {
386        if (DBG) Log.e(TAG, msg);
387    }
388
389    private void infoLog(String msg) {
390        if (DBG) Log.i(TAG, msg);
391    }
392
393    private void warnLog(String msg) {
394        Log.w(TAG, msg);
395    }
396}
397