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Android example source code file (BluetoothService.java)

This example Android source code file (BluetoothService.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, arraylist, bluetooth, bluetooth_admin, content, dbg, filenotfoundexception, hashmap, integer, io, ioexception, need, os, override, parceluuid, provider, remoteservice, string, stringbuilder, util

The BluetoothService.java Android example source code

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * TODO: Move this to
 * java/services/com/android/server/BluetoothService.java
 * and make the contructor package private again.
 *
 * @hide
 */

package android.server;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothClass;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothHeadset;
import android.bluetooth.BluetoothSocket;
import android.bluetooth.BluetoothUuid;
import android.bluetooth.IBluetooth;
import android.bluetooth.IBluetoothCallback;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.ParcelUuid;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemService;
import android.provider.Settings;
import android.util.Log;

import com.android.internal.app.IBatteryStats;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

public class BluetoothService extends IBluetooth.Stub {
    private static final String TAG = "BluetoothService";
    private static final boolean DBG = true;

    private int mNativeData;
    private BluetoothEventLoop mEventLoop;
    private boolean mIsAirplaneSensitive;
    private boolean mIsAirplaneToggleable;
    private int mBluetoothState;
    private boolean mRestart = false;  // need to call enable() after disable()
    private boolean mIsDiscovering;

    private BluetoothAdapter mAdapter;  // constant after init()
    private final BondState mBondState = new BondState();  // local cache of bondings
    private final IBatteryStats mBatteryStats;
    private final Context mContext;

    private static final String BLUETOOTH_ADMIN_PERM = android.Manifest.permission.BLUETOOTH_ADMIN;
    private static final String BLUETOOTH_PERM = android.Manifest.permission.BLUETOOTH;

    private static final String DOCK_ADDRESS_PATH = "/sys/class/switch/dock/bt_addr";
    private static final String DOCK_PIN_PATH = "/sys/class/switch/dock/bt_pin";

    private static final String SHARED_PREFERENCE_DOCK_ADDRESS = "dock_bluetooth_address";
    private static final String SHARED_PREFERENCES_NAME = "bluetooth_service_settings";

    private static final int MESSAGE_REGISTER_SDP_RECORDS = 1;
    private static final int MESSAGE_FINISH_DISABLE = 2;
    private static final int MESSAGE_UUID_INTENT = 3;
    private static final int MESSAGE_DISCOVERABLE_TIMEOUT = 4;

    // The timeout used to sent the UUIDs Intent
    // This timeout should be greater than the page timeout
    private static final int UUID_INTENT_DELAY = 6000;

    /** Always retrieve RFCOMM channel for these SDP UUIDs */
    private static final ParcelUuid[] RFCOMM_UUIDS = {
            BluetoothUuid.Handsfree,
            BluetoothUuid.HSP,
            BluetoothUuid.ObexObjectPush };


    private final Map<String, String> mAdapterProperties;
    private final HashMap<String, Map mDeviceProperties;

    private final HashMap<String, Map mDeviceServiceChannelCache;
    private final ArrayList<String> mUuidIntentTracker;
    private final HashMap<RemoteService, IBluetoothCallback> mUuidCallbackTracker;

    private final HashMap<Integer, Integer> mServiceRecordToPid;

    private static String mDockAddress;
    private String mDockPin;

    private static class RemoteService {
        public String address;
        public ParcelUuid uuid;
        public RemoteService(String address, ParcelUuid uuid) {
            this.address = address;
            this.uuid = uuid;
        }
        @Override
        public boolean equals(Object o) {
            if (o instanceof RemoteService) {
                RemoteService service = (RemoteService)o;
                return address.equals(service.address) && uuid.equals(service.uuid);
            }
            return false;
        }

        @Override
        public int hashCode() {
            int hash = 1;
            hash = hash * 31 + (address == null ? 0 : address.hashCode());
            hash = hash * 31 + (uuid == null ? 0 : uuid.hashCode());
            return hash;
        }
    }

    static {
        classInitNative();
    }

    public BluetoothService(Context context) {
        mContext = context;

        // Need to do this in place of:
        // mBatteryStats = BatteryStatsService.getService();
        // Since we can not import BatteryStatsService from here. This class really needs to be
        // moved to java/services/com/android/server/
        mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService("batteryinfo"));

        initializeNativeDataNative();

        if (isEnabledNative() == 1) {
            Log.w(TAG, "Bluetooth daemons already running - runtime restart? ");
            disableNative();
        }

        mBluetoothState = BluetoothAdapter.STATE_OFF;
        mIsDiscovering = false;
        mAdapterProperties = new HashMap<String, String>();
        mDeviceProperties = new HashMap<String, Map();

        mDeviceServiceChannelCache = new HashMap<String, Map();
        mUuidIntentTracker = new ArrayList<String>();
        mUuidCallbackTracker = new HashMap<RemoteService, IBluetoothCallback>();
        mServiceRecordToPid = new HashMap<Integer, Integer>();

        IntentFilter filter = new IntentFilter();
        registerForAirplaneMode(filter);

        filter.addAction(Intent.ACTION_DOCK_EVENT);
        mContext.registerReceiver(mReceiver, filter);
    }

     public static synchronized String readDockBluetoothAddress() {
        if (mDockAddress != null) return mDockAddress;

        BufferedInputStream file = null;
        String dockAddress;
        try {
            file = new BufferedInputStream(new FileInputStream(DOCK_ADDRESS_PATH));
            byte[] address = new byte[17];
            file.read(address);
            dockAddress = new String(address);
            dockAddress = dockAddress.toUpperCase();
            if (BluetoothAdapter.checkBluetoothAddress(dockAddress)) {
                mDockAddress = dockAddress;
                return mDockAddress;
            } else {
                log("CheckBluetoothAddress failed for car dock address:" + dockAddress);
            }
        } catch (FileNotFoundException e) {
            log("FileNotFoundException while trying to read dock address");
        } catch (IOException e) {
            log("IOException while trying to read dock address");
        } finally {
            if (file != null) {
                try {
                    file.close();
                } catch (IOException e) {
                    // Ignore
                }
            }
        }
        mDockAddress = null;
        return null;
    }

    private synchronized boolean writeDockPin() {
        BufferedWriter out = null;
        try {
            out = new BufferedWriter(new FileWriter(DOCK_PIN_PATH));

            // Generate a random 4 digit pin between 0000 and 9999
            // This is not truly random but good enough for our purposes.
            int pin = (int) Math.floor(Math.random() * 10000);

            mDockPin = String.format("%04d", pin);
            out.write(mDockPin);
            return true;
        } catch (FileNotFoundException e) {
            log("FileNotFoundException while trying to write dock pairing pin");
        } catch (IOException e) {
            log("IOException while while trying to write dock pairing pin");
        } finally {
            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                    // Ignore
                }
            }
        }
        mDockPin = null;
        return false;
    }

    /*package*/ synchronized String getDockPin() {
        return mDockPin;
    }

    public synchronized void initAfterRegistration() {
        mAdapter = BluetoothAdapter.getDefaultAdapter();
        mEventLoop = new BluetoothEventLoop(mContext, mAdapter, this);
    }

    @Override
    protected void finalize() throws Throwable {
        mContext.unregisterReceiver(mReceiver);
        try {
            cleanupNativeDataNative();
        } finally {
            super.finalize();
        }
    }

    public boolean isEnabled() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        return isEnabledInternal();
    }

    private boolean isEnabledInternal() {
        return mBluetoothState == BluetoothAdapter.STATE_ON;
    }

    public int getBluetoothState() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        return mBluetoothState;
    }


    /**
     * Bring down bluetooth and disable BT in settings. Returns true on success.
     */
    public boolean disable() {
        return disable(true);
    }

    /**
     * Bring down bluetooth. Returns true on success.
     *
     * @param saveSetting If true, persist the new setting
     */
    public synchronized boolean disable(boolean saveSetting) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission");

        switch (mBluetoothState) {
        case BluetoothAdapter.STATE_OFF:
            return true;
        case BluetoothAdapter.STATE_ON:
            break;
        default:
            return false;
        }
        if (mEnableThread != null && mEnableThread.isAlive()) {
            return false;
        }
        setBluetoothState(BluetoothAdapter.STATE_TURNING_OFF);
        mHandler.removeMessages(MESSAGE_REGISTER_SDP_RECORDS);

        // Allow 3 seconds for profiles to gracefully disconnect
        // TODO: Introduce a callback mechanism so that each profile can notify
        // BluetoothService when it is done shutting down
        mHandler.sendMessageDelayed(
                mHandler.obtainMessage(MESSAGE_FINISH_DISABLE, saveSetting ? 1 : 0, 0), 3000);
        return true;
    }


    private synchronized void finishDisable(boolean saveSetting) {
        if (mBluetoothState != BluetoothAdapter.STATE_TURNING_OFF) {
            return;
        }
        mEventLoop.stop();
        tearDownNativeDataNative();
        disableNative();

        // mark in progress bondings as cancelled
        for (String address : mBondState.listInState(BluetoothDevice.BOND_BONDING)) {
            mBondState.setBondState(address, BluetoothDevice.BOND_NONE,
                                    BluetoothDevice.UNBOND_REASON_AUTH_CANCELED);
        }

        // update mode
        Intent intent = new Intent(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED);
        intent.putExtra(BluetoothAdapter.EXTRA_SCAN_MODE, BluetoothAdapter.SCAN_MODE_NONE);
        mContext.sendBroadcast(intent, BLUETOOTH_PERM);

        mIsDiscovering = false;
        mAdapterProperties.clear();
        mServiceRecordToPid.clear();

        if (saveSetting) {
            persistBluetoothOnSetting(false);
        }

        setBluetoothState(BluetoothAdapter.STATE_OFF);

        // Log bluetooth off to battery stats.
        long ident = Binder.clearCallingIdentity();
        try {
            mBatteryStats.noteBluetoothOff();
        } catch (RemoteException e) {
        } finally {
            Binder.restoreCallingIdentity(ident);
        }

        if (mRestart) {
            mRestart = false;
            enable();
        }
    }

    /** Bring up BT and persist BT on in settings */
    public boolean enable() {
        return enable(true);
    }

    /**
     * Enable this Bluetooth device, asynchronously.
     * This turns on/off the underlying hardware.
     *
     * @param saveSetting If true, persist the new state of BT in settings
     * @return True on success (so far)
     */
    public synchronized boolean enable(boolean saveSetting) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");

        // Airplane mode can prevent Bluetooth radio from being turned on.
        if (mIsAirplaneSensitive && isAirplaneModeOn() && !mIsAirplaneToggleable) {
            return false;
        }
        if (mBluetoothState != BluetoothAdapter.STATE_OFF) {
            return false;
        }
        if (mEnableThread != null && mEnableThread.isAlive()) {
            return false;
        }
        setBluetoothState(BluetoothAdapter.STATE_TURNING_ON);
        mEnableThread = new EnableThread(saveSetting);
        mEnableThread.start();
        return true;
    }

    /** Forcibly restart Bluetooth if it is on */
    /* package */ synchronized void restart() {
        if (mBluetoothState != BluetoothAdapter.STATE_ON) {
            return;
        }
        mRestart = true;
        if (!disable(false)) {
            mRestart = false;
        }
    }

    private synchronized void setBluetoothState(int state) {
        if (state == mBluetoothState) {
            return;
        }

        if (DBG) log("Bluetooth state " + mBluetoothState + " -> " + state);

        Intent intent = new Intent(BluetoothAdapter.ACTION_STATE_CHANGED);
        intent.putExtra(BluetoothAdapter.EXTRA_PREVIOUS_STATE, mBluetoothState);
        intent.putExtra(BluetoothAdapter.EXTRA_STATE, state);
        intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);

        mBluetoothState = state;

        mContext.sendBroadcast(intent, BLUETOOTH_PERM);
    }

    private final Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
            case MESSAGE_REGISTER_SDP_RECORDS:
                if (!isEnabledInternal()) {
                    return;
                }
                // SystemService.start() forks sdptool to register service
                // records. It can fail to register some records if it is
                // forked multiple times in a row, probably because there is
                // some race in sdptool or bluez when operated in parallel.
                // As a workaround, delay 500ms between each fork of sdptool.
                // TODO: Don't fork sdptool in order to regsiter service
                // records, use a DBUS call instead.
                switch (msg.arg1) {
                case 1:
                    Log.d(TAG, "Registering hfag record");
                    SystemService.start("hfag");
                    mHandler.sendMessageDelayed(
                            mHandler.obtainMessage(MESSAGE_REGISTER_SDP_RECORDS, 2, -1), 500);
                    break;
                case 2:
                    Log.d(TAG, "Registering hsag record");
                    SystemService.start("hsag");
                    mHandler.sendMessageDelayed(
                            mHandler.obtainMessage(MESSAGE_REGISTER_SDP_RECORDS, 3, -1), 500);
                    break;
                case 3:
                    Log.d(TAG, "Registering opush record");
                    SystemService.start("opush");
                    mHandler.sendMessageDelayed(
                            mHandler.obtainMessage(MESSAGE_REGISTER_SDP_RECORDS, 4, -1), 500);
                    break;
                case 4:
                    Log.d(TAG, "Registering pbap record");
                    SystemService.start("pbap");
                    break;
                }
                break;
            case MESSAGE_FINISH_DISABLE:
                finishDisable(msg.arg1 != 0);
                break;
            case MESSAGE_UUID_INTENT:
                String address = (String)msg.obj;
                if (address != null) {
                    sendUuidIntent(address);
                    makeServiceChannelCallbacks(address);
                }
                break;
            case MESSAGE_DISCOVERABLE_TIMEOUT:
                int mode = msg.arg1;
                if (isEnabledInternal()) {
                    // TODO: Switch back to the previous scan mode
                    // This is ok for now, because we only use
                    // CONNECTABLE and CONNECTABLE_DISCOVERABLE
                    setScanMode(BluetoothAdapter.SCAN_MODE_CONNECTABLE, -1);
                }
                break;
            }
        }
    };

    private EnableThread mEnableThread;

    private class EnableThread extends Thread {
        private final boolean mSaveSetting;
        public EnableThread(boolean saveSetting) {
            mSaveSetting = saveSetting;
        }
        public void run() {
            boolean res = (enableNative() == 0);
            if (res) {
                int retryCount = 2;
                boolean running = false;
                while ((retryCount-- > 0) && !running) {
                    mEventLoop.start();
                    // it may take a momement for the other thread to do its
                    // thing.  Check periodically for a while.
                    int pollCount = 5;
                    while ((pollCount-- > 0) && !running) {
                        if (mEventLoop.isEventLoopRunning()) {
                            running = true;
                            break;
                        }
                        try {
                            Thread.sleep(100);
                        } catch (InterruptedException e) {}
                    }
                }
                if (!running) {
                    log("bt EnableThread giving up");
                    res = false;
                    disableNative();
                }
            }


            if (res) {
                if (!setupNativeDataNative()) {
                    return;
                }
                if (mSaveSetting) {
                    persistBluetoothOnSetting(true);
                }
                mIsDiscovering = false;
                mBondState.readAutoPairingData();
                mBondState.loadBondState();
                mHandler.sendMessageDelayed(
                        mHandler.obtainMessage(MESSAGE_REGISTER_SDP_RECORDS, 1, -1), 3000);

                // Log bluetooth on to battery stats.
                long ident = Binder.clearCallingIdentity();
                try {
                    mBatteryStats.noteBluetoothOn();
                } catch (RemoteException e) {
                } finally {
                    Binder.restoreCallingIdentity(ident);
                }
            }

            mEnableThread = null;

            setBluetoothState(res ?
                              BluetoothAdapter.STATE_ON :
                              BluetoothAdapter.STATE_OFF);

            if (res) {
                // Update mode
                String[] propVal = {"Pairable", getProperty("Pairable")};
                mEventLoop.onPropertyChanged(propVal);
            }

            if (mIsAirplaneSensitive && isAirplaneModeOn() && !mIsAirplaneToggleable) {
                disable(false);
            }

        }
    }

    private void persistBluetoothOnSetting(boolean bluetoothOn) {
        long origCallerIdentityToken = Binder.clearCallingIdentity();
        Settings.Secure.putInt(mContext.getContentResolver(), Settings.Secure.BLUETOOTH_ON,
                bluetoothOn ? 1 : 0);
        Binder.restoreCallingIdentity(origCallerIdentityToken);
    }

    /* package */ BondState getBondState() {
        return mBondState;
    }

    /** local cache of bonding state.
    /* we keep our own state to track the intermediate state BONDING, which
    /* bluez does not track.
     * All addreses must be passed in upper case.
     */
    public class BondState {
        private final HashMap<String, Integer> mState = new HashMap();
        private final HashMap<String, Integer> mPinAttempt = new HashMap();

        private static final String AUTO_PAIRING_BLACKLIST =
            "/etc/bluetooth/auto_pairing.conf";
        private static final String DYNAMIC_AUTO_PAIRING_BLACKLIST =
            "/data/misc/bluetooth/dynamic_auto_pairing.conf";
        private ArrayList<String>  mAutoPairingAddressBlacklist;
        private ArrayList<String> mAutoPairingExactNameBlacklist;
        private ArrayList<String> mAutoPairingPartialNameBlacklist;
        // Addresses added to blacklist dynamically based on usage.
        private ArrayList<String> mAutoPairingDynamicAddressBlacklist;


        // If this is an outgoing connection, store the address.
        // There can be only 1 pending outgoing connection at a time,
        private String mPendingOutgoingBonding;

        private synchronized void setPendingOutgoingBonding(String address) {
            mPendingOutgoingBonding = address;
        }

        public synchronized String getPendingOutgoingBonding() {
            return mPendingOutgoingBonding;
        }

        public synchronized void loadBondState() {
            if (mBluetoothState != BluetoothAdapter.STATE_TURNING_ON) {
                return;
            }
            String []bonds = null;
            String val = getPropertyInternal("Devices");
            if (val != null) {
                bonds = val.split(",");
            }
            if (bonds == null) {
                return;
            }
            mState.clear();
            if (DBG) log("found " + bonds.length + " bonded devices");
            for (String device : bonds) {
                mState.put(getAddressFromObjectPath(device).toUpperCase(),
                        BluetoothDevice.BOND_BONDED);
            }
        }

        public synchronized void setBondState(String address, int state) {
            setBondState(address, state, 0);
        }

        /** reason is ignored unless state == BOND_NOT_BONDED */
        public synchronized void setBondState(String address, int state, int reason) {
            int oldState = getBondState(address);
            if (oldState == state) {
                return;
            }

            // Check if this was an pending outgoing bonding.
            // If yes, reset the state.
            if (oldState == BluetoothDevice.BOND_BONDING) {
                if (address.equals(mPendingOutgoingBonding)) {
                    mPendingOutgoingBonding = null;
                }
            }

            if (DBG) log(address + " bond state " + oldState + " -> " + state + " (" +
                         reason + ")");
            Intent intent = new Intent(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
            intent.putExtra(BluetoothDevice.EXTRA_DEVICE, mAdapter.getRemoteDevice(address));
            intent.putExtra(BluetoothDevice.EXTRA_BOND_STATE, state);
            intent.putExtra(BluetoothDevice.EXTRA_PREVIOUS_BOND_STATE, oldState);
            if (state == BluetoothDevice.BOND_NONE) {
                if (reason <= 0) {
                    Log.w(TAG, "setBondState() called to unbond device, but reason code is " +
                          "invalid. Overriding reason code with BOND_RESULT_REMOVED");
                    reason = BluetoothDevice.UNBOND_REASON_REMOVED;
                }
                intent.putExtra(BluetoothDevice.EXTRA_REASON, reason);
                mState.remove(address);
            } else {
                mState.put(address, state);
            }

            mContext.sendBroadcast(intent, BLUETOOTH_PERM);
        }

        public boolean isAutoPairingBlacklisted(String address) {
            if (mAutoPairingAddressBlacklist != null) {
                for (String blacklistAddress : mAutoPairingAddressBlacklist) {
                    if (address.startsWith(blacklistAddress)) return true;
                }
            }

            if (mAutoPairingDynamicAddressBlacklist != null) {
                for (String blacklistAddress: mAutoPairingDynamicAddressBlacklist) {
                    if (address.equals(blacklistAddress)) return true;
                }
            }
            String name = getRemoteName(address);
            if (name != null) {
                if (mAutoPairingExactNameBlacklist != null) {
                    for (String blacklistName : mAutoPairingExactNameBlacklist) {
                        if (name.equals(blacklistName)) return true;
                    }
                }

                if (mAutoPairingPartialNameBlacklist != null) {
                    for (String blacklistName : mAutoPairingPartialNameBlacklist) {
                        if (name.startsWith(blacklistName)) return true;
                    }
                }
            }
            return false;
        }

        public synchronized int getBondState(String address) {
            Integer state = mState.get(address);
            if (state == null) {
                return BluetoothDevice.BOND_NONE;
            }
            return state.intValue();
        }

        /*package*/ synchronized String[] listInState(int state) {
            ArrayList<String> result = new ArrayList(mState.size());
            for (Map.Entry<String, Integer> e : mState.entrySet()) {
                if (e.getValue().intValue() == state) {
                    result.add(e.getKey());
                }
            }
            return result.toArray(new String[result.size()]);
        }

        public synchronized void addAutoPairingFailure(String address) {
            if (mAutoPairingDynamicAddressBlacklist == null) {
                mAutoPairingDynamicAddressBlacklist = new ArrayList<String>();
            }

            updateAutoPairingData(address);
            mAutoPairingDynamicAddressBlacklist.add(address);
        }

        public synchronized boolean isAutoPairingAttemptsInProgress(String address) {
            return getAttempt(address) != 0;
        }

        public synchronized void clearPinAttempts(String address) {
            mPinAttempt.remove(address);
        }

        public synchronized boolean hasAutoPairingFailed(String address) {
            if (mAutoPairingDynamicAddressBlacklist == null) return false;

            return mAutoPairingDynamicAddressBlacklist.contains(address);
        }

        public synchronized int getAttempt(String address) {
            Integer attempt = mPinAttempt.get(address);
            if (attempt == null) {
                return 0;
            }
            return attempt.intValue();
        }

        public synchronized void attempt(String address) {
            Integer attempt = mPinAttempt.get(address);
            int newAttempt;
            if (attempt == null) {
                newAttempt = 1;
            } else {
                newAttempt = attempt.intValue() + 1;
            }
            mPinAttempt.put(address, new Integer(newAttempt));
        }

        private void copyAutoPairingData() {
            File file = null;
            FileInputStream in = null;
            FileOutputStream out = null;
            try {
                file = new File(DYNAMIC_AUTO_PAIRING_BLACKLIST);
                if (file.exists()) return;

                in = new FileInputStream(AUTO_PAIRING_BLACKLIST);
                out= new FileOutputStream(DYNAMIC_AUTO_PAIRING_BLACKLIST);

                byte[] buf = new byte[1024];
                int len;
                while ((len = in.read(buf)) > 0) {
                    out.write(buf, 0, len);
                }
            } catch (FileNotFoundException e) {
                log("FileNotFoundException: in copyAutoPairingData");
            } catch (IOException e) {
                log("IOException: in copyAutoPairingData");
            } finally {
                 try {
                     if (in != null) in.close();
                     if (out != null) out.close();
                 } catch (IOException e) {}
            }
        }

        public void readAutoPairingData() {
            if (mAutoPairingAddressBlacklist != null) return;
            copyAutoPairingData();
            FileInputStream fstream = null;
            try {
                fstream = new FileInputStream(DYNAMIC_AUTO_PAIRING_BLACKLIST);
                DataInputStream in = new DataInputStream(fstream);
                BufferedReader file = new BufferedReader(new InputStreamReader(in));
                String line;
                while((line = file.readLine()) != null) {
                    line = line.trim();
                    if (line.length() == 0 || line.startsWith("//")) continue;
                    String[] value = line.split("=");
                    if (value != null && value.length == 2) {
                        String[] val = value[1].split(",");
                        if (value[0].equalsIgnoreCase("AddressBlacklist")) {
                            mAutoPairingAddressBlacklist =
                                new ArrayList<String>(Arrays.asList(val));
                        } else if (value[0].equalsIgnoreCase("ExactNameBlacklist")) {
                            mAutoPairingExactNameBlacklist =
                                new ArrayList<String>(Arrays.asList(val));
                        } else if (value[0].equalsIgnoreCase("PartialNameBlacklist")) {
                            mAutoPairingPartialNameBlacklist =
                                new ArrayList<String>(Arrays.asList(val));
                        } else if (value[0].equalsIgnoreCase("DynamicAddressBlacklist")) {
                            mAutoPairingDynamicAddressBlacklist =
                                new ArrayList<String>(Arrays.asList(val));
                        } else {
                            Log.e(TAG, "Error parsing Auto pairing blacklist file");
                        }
                    }
                }
            } catch (FileNotFoundException e) {
                log("FileNotFoundException: readAutoPairingData" + e.toString());
            } catch (IOException e) {
                log("IOException: readAutoPairingData" + e.toString());
            } finally {
                if (fstream != null) {
                    try {
                        fstream.close();
                    } catch (IOException e) {
                        // Ignore
                    }
                }
            }
        }

        // This function adds a bluetooth address to the auto pairing blacklis
        // file. These addresses are added to DynamicAddressBlacklistSection
        private void updateAutoPairingData(String address) {
            BufferedWriter out = null;
            try {
                out = new BufferedWriter(new FileWriter(DYNAMIC_AUTO_PAIRING_BLACKLIST, true));
                StringBuilder str = new StringBuilder();
                if (mAutoPairingDynamicAddressBlacklist.size() == 0) {
                    str.append("DynamicAddressBlacklist=");
                }
                str.append(address);
                str.append(",");
                out.write(str.toString());
            } catch (FileNotFoundException e) {
                log("FileNotFoundException: updateAutoPairingData" + e.toString());
            } catch (IOException e) {
                log("IOException: updateAutoPairingData" + e.toString());
            } finally {
                if (out != null) {
                    try {
                        out.close();
                    } catch (IOException e) {
                        // Ignore
                    }
                }
            }
        }
    }

    private static String toBondStateString(int bondState) {
        switch (bondState) {
        case BluetoothDevice.BOND_NONE:
            return "not bonded";
        case BluetoothDevice.BOND_BONDING:
            return "bonding";
        case BluetoothDevice.BOND_BONDED:
            return "bonded";
        default:
            return "??????";
        }
    }

    /*package*/ synchronized boolean isAdapterPropertiesEmpty() {
        return mAdapterProperties.isEmpty();
    }

    /*package*/synchronized void getAllProperties() {

        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        mAdapterProperties.clear();

        String properties[] = (String [])getAdapterPropertiesNative();
        // The String Array consists of key-value pairs.
        if (properties == null) {
            Log.e(TAG, "*Error*: GetAdapterProperties returned NULL");
            return;
        }

        for (int i = 0; i < properties.length; i++) {
            String name = properties[i];
            String newValue = null;
            int len;
            if (name == null) {
                Log.e(TAG, "Error:Adapter Property at index" + i + "is null");
                continue;
            }
            if (name.equals("Devices")) {
                StringBuilder str = new StringBuilder();
                len = Integer.valueOf(properties[++i]);
                for (int j = 0; j < len; j++) {
                    str.append(properties[++i]);
                    str.append(",");
                }
                if (len > 0) {
                    newValue = str.toString();
                }
            } else {
                newValue = properties[++i];
            }
            mAdapterProperties.put(name, newValue);
        }

        // Add adapter object path property.
        String adapterPath = getAdapterPathNative();
        if (adapterPath != null)
            mAdapterProperties.put("ObjectPath", adapterPath + "/dev_");
    }

    /* package */ synchronized void setProperty(String name, String value) {
        mAdapterProperties.put(name, value);
    }

    public synchronized boolean setName(String name) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (name == null) {
            return false;
        }
        return setPropertyString("Name", name);
    }

    //TODO(): setPropertyString, setPropertyInteger, setPropertyBoolean
    // Either have a single property function with Object as the parameter
    // or have a function for each property and then obfuscate in the JNI layer.
    // The following looks dirty.
    private boolean setPropertyString(String key, String value) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!isEnabledInternal()) return false;
        return setAdapterPropertyStringNative(key, value);
    }

    private boolean setPropertyInteger(String key, int value) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!isEnabledInternal()) return false;
        return setAdapterPropertyIntegerNative(key, value);
    }

    private boolean setPropertyBoolean(String key, boolean value) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!isEnabledInternal()) return false;
        return setAdapterPropertyBooleanNative(key, value ? 1 : 0);
    }

    /**
     * Set the discoverability window for the device.  A timeout of zero
     * makes the device permanently discoverable (if the device is
     * discoverable).  Setting the timeout to a nonzero value does not make
     * a device discoverable; you need to call setMode() to make the device
     * explicitly discoverable.
     *
     * @param timeout_s The discoverable timeout in seconds.
     */
    public synchronized boolean setDiscoverableTimeout(int timeout) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        return setPropertyInteger("DiscoverableTimeout", timeout);
    }

    public synchronized boolean setScanMode(int mode, int duration) {
        mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS,
                                                "Need WRITE_SECURE_SETTINGS permission");
        boolean pairable = false;
        boolean discoverable = false;

        switch (mode) {
        case BluetoothAdapter.SCAN_MODE_NONE:
            mHandler.removeMessages(MESSAGE_DISCOVERABLE_TIMEOUT);
            pairable = false;
            discoverable = false;
            break;
        case BluetoothAdapter.SCAN_MODE_CONNECTABLE:
            mHandler.removeMessages(MESSAGE_DISCOVERABLE_TIMEOUT);
            pairable = true;
            discoverable = false;
            break;
        case BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE:
            mHandler.removeMessages(MESSAGE_DISCOVERABLE_TIMEOUT);
            pairable = true;
            discoverable = true;
            Message msg = mHandler.obtainMessage(MESSAGE_DISCOVERABLE_TIMEOUT);
            mHandler.sendMessageDelayed(msg, duration * 1000);
            if (DBG) Log.d(TAG, "BT Discoverable for " + duration + " seconds");
            break;
        default:
            Log.w(TAG, "Requested invalid scan mode " + mode);
            return false;
        }
        setPropertyBoolean("Pairable", pairable);
        setPropertyBoolean("Discoverable", discoverable);

        return true;
    }

    /*package*/ synchronized String getProperty(String name) {
        if (!isEnabledInternal()) return null;
        return getPropertyInternal(name);
    }

    /*package*/ synchronized String getPropertyInternal(String name) {
        if (!mAdapterProperties.isEmpty())
            return mAdapterProperties.get(name);
        getAllProperties();
        return mAdapterProperties.get(name);
    }

    public synchronized String getAddress() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        return getProperty("Address");
    }

    public synchronized String getName() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        return getProperty("Name");
    }

    /**
     * Returns the user-friendly name of a remote device.  This value is
     * returned from our local cache, which is updated when onPropertyChange
     * event is received.
     * Do not expect to retrieve the updated remote name immediately after
     * changing the name on the remote device.
     *
     * @param address Bluetooth address of remote device.
     *
     * @return The user-friendly name of the specified remote device.
     */
    public synchronized String getRemoteName(String address) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return null;
        }
        return getRemoteDeviceProperty(address, "Name");
    }

    /**
     * Get the discoverability window for the device.  A timeout of zero
     * means that the device is permanently discoverable (if the device is
     * in the discoverable mode).
     *
     * @return The discoverability window of the device, in seconds.  A negative
     *         value indicates an error.
     */
    public synchronized int getDiscoverableTimeout() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        String timeout = getProperty("DiscoverableTimeout");
        if (timeout != null)
           return Integer.valueOf(timeout);
        else
            return -1;
    }

    public synchronized int getScanMode() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!isEnabledInternal())
            return BluetoothAdapter.SCAN_MODE_NONE;

        boolean pairable = getProperty("Pairable").equals("true");
        boolean discoverable = getProperty("Discoverable").equals("true");
        return bluezStringToScanMode (pairable, discoverable);
    }

    public synchronized boolean startDiscovery() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        return startDiscoveryNative();
    }

    public synchronized boolean cancelDiscovery() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        return stopDiscoveryNative();
    }

    public synchronized boolean isDiscovering() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        return mIsDiscovering;
    }

    /* package */ void setIsDiscovering(boolean isDiscovering) {
        mIsDiscovering = isDiscovering;
    }

    public synchronized boolean createBond(String address) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return false;
        }
        address = address.toUpperCase();

        if (mBondState.getPendingOutgoingBonding() != null) {
            log("Ignoring createBond(): another device is bonding");
            // a different device is currently bonding, fail
            return false;
        }

        // Check for bond state only if we are not performing auto
        // pairing exponential back-off attempts.
        if (!mBondState.isAutoPairingAttemptsInProgress(address) &&
                mBondState.getBondState(address) != BluetoothDevice.BOND_NONE) {
            log("Ignoring createBond(): this device is already bonding or bonded");
            return false;
        }

        if (address.equals(mDockAddress)) {
            if (!writeDockPin()) {
                log("Error while writing Pin for the dock");
                return false;
            }
        }

        if (!createPairedDeviceNative(address, 60000 /* 1 minute */)) {
            return false;
        }

        mBondState.setPendingOutgoingBonding(address);
        mBondState.setBondState(address, BluetoothDevice.BOND_BONDING);

        return true;
    }

    public synchronized boolean cancelBondProcess(String address) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return false;
        }
        address = address.toUpperCase();
        if (mBondState.getBondState(address) != BluetoothDevice.BOND_BONDING) {
            return false;
        }

        mBondState.setBondState(address, BluetoothDevice.BOND_NONE,
                                BluetoothDevice.UNBOND_REASON_AUTH_CANCELED);
        cancelDeviceCreationNative(address);
        return true;
    }

    public synchronized boolean removeBond(String address) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return false;
        }
        return removeDeviceNative(getObjectPathFromAddress(address));
    }

    public synchronized String[] listBonds() {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        return mBondState.listInState(BluetoothDevice.BOND_BONDED);
    }

    public synchronized int getBondState(String address) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return BluetoothDevice.ERROR;
        }
        return mBondState.getBondState(address.toUpperCase());
    }

    public synchronized boolean isBluetoothDock(String address) {
        SharedPreferences sp = mContext.getSharedPreferences(SHARED_PREFERENCES_NAME,
                mContext.MODE_PRIVATE);

        return sp.contains(SHARED_PREFERENCE_DOCK_ADDRESS + address);
    }

    /*package*/ boolean isRemoteDeviceInCache(String address) {
        return (mDeviceProperties.get(address) != null);
    }

    /*package*/ String[] getRemoteDeviceProperties(String address) {
        if (!isEnabledInternal()) return null;

        String objectPath = getObjectPathFromAddress(address);
        return (String [])getDevicePropertiesNative(objectPath);
    }

    /*package*/ synchronized String getRemoteDeviceProperty(String address, String property) {
        Map<String, String> properties = mDeviceProperties.get(address);
        if (properties != null) {
            return properties.get(property);
        } else {
            // Query for remote device properties, again.
            // We will need to reload the cache when we switch Bluetooth on / off
            // or if we crash.
            if (updateRemoteDevicePropertiesCache(address))
                return getRemoteDeviceProperty(address, property);
        }
        Log.e(TAG, "getRemoteDeviceProperty: " + property + "not present:" + address);
        return null;
    }

    /* package */ synchronized boolean updateRemoteDevicePropertiesCache(String address) {
        String[] propValues = getRemoteDeviceProperties(address);
        if (propValues != null) {
            addRemoteDeviceProperties(address, propValues);
            return true;
        }
        return false;
    }

    /* package */ synchronized void addRemoteDeviceProperties(String address, String[] properties) {
        /*
         * We get a DeviceFound signal every time RSSI changes or name changes.
         * Don't create a new Map object every time */
        Map<String, String> propertyValues = mDeviceProperties.get(address);
        if (propertyValues == null) {
            propertyValues = new HashMap<String, String>();
        }

        for (int i = 0; i < properties.length; i++) {
            String name = properties[i];
            String newValue = null;
            int len;
            if (name == null) {
                Log.e(TAG, "Error: Remote Device Property at index" + i + "is null");
                continue;
            }
            if (name.equals("UUIDs") || name.equals("Nodes")) {
                StringBuilder str = new StringBuilder();
                len = Integer.valueOf(properties[++i]);
                for (int j = 0; j < len; j++) {
                    str.append(properties[++i]);
                    str.append(",");
                }
                if (len > 0) {
                    newValue = str.toString();
                }
            } else {
                newValue = properties[++i];
            }

            propertyValues.put(name, newValue);
        }
        mDeviceProperties.put(address, propertyValues);

        // We have added a new remote device or updated its properties.
        // Also update the serviceChannel cache.
        updateDeviceServiceChannelCache(address);
    }

    /* package */ void removeRemoteDeviceProperties(String address) {
        mDeviceProperties.remove(address);
    }

    /* package */ synchronized void setRemoteDeviceProperty(String address, String name,
                                                              String value) {
        Map <String, String> propVal = mDeviceProperties.get(address);
        if (propVal != null) {
            propVal.put(name, value);
            mDeviceProperties.put(address, propVal);
        } else {
            Log.e(TAG, "setRemoteDeviceProperty for a device not in cache:" + address);
        }
    }

    /**
     * Sets the remote device trust state.
     *
     * @return boolean to indicate operation success or fail
     */
    public synchronized boolean setTrust(String address, boolean value) {
        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                    "Need BLUETOOTH_ADMIN permission");
            return false;
        }

        if (!isEnabledInternal()) return false;

        return setDevicePropertyBooleanNative(getObjectPathFromAddress(address), "Trusted",
                value ? 1 : 0);
    }

    /**
     * Gets the remote device trust state as boolean.
     * Note: this value may be
     * retrieved from cache if we retrieved the data before *
     *
     * @return boolean to indicate trust or untrust state
     */
    public synchronized boolean getTrustState(String address) {
        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
            return false;
        }

        String val = getRemoteDeviceProperty(address, "Trusted");
        if (val == null) {
            return false;
        } else {
            return val.equals("true") ? true : false;
        }
    }

    /**
     * Gets the remote major, minor classes encoded as a 32-bit
     * integer.
     *
     * Note: this value is retrieved from cache, because we get it during
     *       remote-device discovery.
     *
     * @return 32-bit integer encoding the remote major, minor, and service
     *         classes.
     */
    public synchronized int getRemoteClass(String address) {
        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
            return BluetoothClass.ERROR;
        }
        String val = getRemoteDeviceProperty(address, "Class");
        if (val == null)
            return BluetoothClass.ERROR;
        else {
            return Integer.valueOf(val);
        }
    }


    /**
     * Gets the UUIDs supported by the remote device
     *
     * @return array of 128bit ParcelUuids
     */
    public synchronized ParcelUuid[] getRemoteUuids(String address) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return null;
        }
        return getUuidFromCache(address);
    }

    private ParcelUuid[] getUuidFromCache(String address) {
        String value = getRemoteDeviceProperty(address, "UUIDs");
        if (value == null) return null;

        String[] uuidStrings = null;
        // The UUIDs are stored as a "," separated string.
        uuidStrings = value.split(",");
        ParcelUuid[] uuids = new ParcelUuid[uuidStrings.length];

        for (int i = 0; i < uuidStrings.length; i++) {
            uuids[i] = ParcelUuid.fromString(uuidStrings[i]);
        }
        return uuids;
    }

    /**
     * Connect and fetch new UUID's using SDP.
     * The UUID's found are broadcast as intents.
     * Optionally takes a uuid and callback to fetch the RFCOMM channel for the
     * a given uuid.
     * TODO: Don't wait UUID_INTENT_DELAY to broadcast UUID intents on success
     * TODO: Don't wait UUID_INTENT_DELAY to handle the failure case for
     * callback and broadcast intents.
     */
    public synchronized boolean fetchRemoteUuids(String address, ParcelUuid uuid,
            IBluetoothCallback callback) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!isEnabledInternal()) return false;

        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return false;
        }

        RemoteService service = new RemoteService(address, uuid);
        if (uuid != null && mUuidCallbackTracker.get(service) != null) {
            // An SDP query for this address & uuid is already in progress
            // Do not add this callback for the uuid
            return false;
        }

        if (mUuidIntentTracker.contains(address)) {
            // An SDP query for this address is already in progress
            // Add this uuid onto the in-progress SDP query
            if (uuid != null) {
                mUuidCallbackTracker.put(new RemoteService(address, uuid), callback);
            }
            return true;
        }

        boolean ret;
        // Just do the SDP if the device is already  created and UUIDs are not
        // NULL, else create the device and then do SDP.
        if (isRemoteDeviceInCache(address) && getRemoteUuids(address) != null) {
            String path = getObjectPathFromAddress(address);
            if (path == null) return false;

            // Use an empty string for the UUID pattern
            ret = discoverServicesNative(path, "");
        } else {
            ret = createDeviceNative(address);
        }

        mUuidIntentTracker.add(address);
        if (uuid != null) {
            mUuidCallbackTracker.put(new RemoteService(address, uuid), callback);
        }

        Message message = mHandler.obtainMessage(MESSAGE_UUID_INTENT);
        message.obj = address;
        mHandler.sendMessageDelayed(message, UUID_INTENT_DELAY);
        return ret;
    }

    /**
     * Gets the rfcomm channel associated with the UUID.
     * Pulls records from the cache only.
     *
     * @param address Address of the remote device
     * @param uuid ParcelUuid of the service attribute
     *
     * @return rfcomm channel associated with the service attribute
     *         -1 on error
     */
    public int getRemoteServiceChannel(String address, ParcelUuid uuid) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!isEnabledInternal()) return -1;

        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return BluetoothDevice.ERROR;
        }
        // Check if we are recovering from a crash.
        if (mDeviceProperties.isEmpty()) {
            if (!updateRemoteDevicePropertiesCache(address))
                return -1;
        }

        Map<ParcelUuid, Integer> value = mDeviceServiceChannelCache.get(address);
        if (value != null && value.containsKey(uuid))
            return value.get(uuid);
        return -1;
    }

    public synchronized boolean setPin(String address, byte[] pin) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        if (pin == null || pin.length <= 0 || pin.length > 16 ||
            !BluetoothAdapter.checkBluetoothAddress(address)) {
            return false;
        }
        address = address.toUpperCase();
        Integer data = mEventLoop.getPasskeyAgentRequestData().remove(address);
        if (data == null) {
            Log.w(TAG, "setPin(" + address + ") called but no native data available, " +
                  "ignoring. Maybe the PasskeyAgent Request was cancelled by the remote device" +
                  " or by bluez.\n");
            return false;
        }
        // bluez API wants pin as a string
        String pinString;
        try {
            pinString = new String(pin, "UTF8");
        } catch (UnsupportedEncodingException uee) {
            Log.e(TAG, "UTF8 not supported?!?");
            return false;
        }
        return setPinNative(address, pinString, data.intValue());
    }

    public synchronized boolean setPasskey(String address, int passkey) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        if (passkey < 0 || passkey > 999999 || !BluetoothAdapter.checkBluetoothAddress(address)) {
            return false;
        }
        address = address.toUpperCase();
        Integer data = mEventLoop.getPasskeyAgentRequestData().remove(address);
        if (data == null) {
            Log.w(TAG, "setPasskey(" + address + ") called but no native data available, " +
                  "ignoring. Maybe the PasskeyAgent Request was cancelled by the remote device" +
                  " or by bluez.\n");
            return false;
        }
        return setPasskeyNative(address, passkey, data.intValue());
    }

    public synchronized boolean setPairingConfirmation(String address, boolean confirm) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        address = address.toUpperCase();
        Integer data = mEventLoop.getPasskeyAgentRequestData().remove(address);
        if (data == null) {
            Log.w(TAG, "setPasskey(" + address + ") called but no native data available, " +
                  "ignoring. Maybe the PasskeyAgent Request was cancelled by the remote device" +
                  " or by bluez.\n");
            return false;
        }
        return setPairingConfirmationNative(address, confirm, data.intValue());
    }

    public synchronized boolean cancelPairingUserInput(String address) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
                                                "Need BLUETOOTH_ADMIN permission");
        if (!isEnabledInternal()) return false;

        if (!BluetoothAdapter.checkBluetoothAddress(address)) {
            return false;
        }
        mBondState.setBondState(address, BluetoothDevice.BOND_NONE,
                BluetoothDevice.UNBOND_REASON_AUTH_CANCELED);
        address = address.toUpperCase();
        Integer data = mEventLoop.getPasskeyAgentRequestData().remove(address);
        if (data == null) {
            Log.w(TAG, "cancelUserInputNative(" + address + ") called but no native data " +
                "available, ignoring. Maybe the PasskeyAgent Request was already cancelled " +
                "by the remote or by bluez.\n");
            return false;
        }
        return cancelPairingUserInputNative(address, data.intValue());
    }

    /*package*/ void updateDeviceServiceChannelCache(String address) {
        ParcelUuid[] deviceUuids = getRemoteUuids(address);
        // We are storing the rfcomm channel numbers only for the uuids
        // we are interested in.
        int channel;
        if (DBG) log("updateDeviceServiceChannelCache(" + address + ")");

        ArrayList<ParcelUuid> applicationUuids = new ArrayList();

        synchronized (this) {
            for (RemoteService service : mUuidCallbackTracker.keySet()) {
                if (service.address.equals(address)) {
                    applicationUuids.add(service.uuid);
                }
            }
        }

        Map <ParcelUuid, Integer> value = new HashMap();

        // Retrieve RFCOMM channel for default uuids
        for (ParcelUuid uuid : RFCOMM_UUIDS) {
            if (BluetoothUuid.isUuidPresent(deviceUuids, uuid)) {
                channel = getDeviceServiceChannelNative(getObjectPathFromAddress(address),
                        uuid.toString(), 0x0004);
                if (DBG) log("\tuuid(system): " + uuid + " " + channel);
                value.put(uuid, channel);
            }
        }
        // Retrieve RFCOMM channel for application requested uuids
        for (ParcelUuid uuid : applicationUuids) {
            if (BluetoothUuid.isUuidPresent(deviceUuids, uuid)) {
                channel = getDeviceServiceChannelNative(getObjectPathFromAddress(address),
                        uuid.toString(), 0x0004);
                if (DBG) log("\tuuid(application): " + uuid + " " + channel);
                value.put(uuid, channel);
            }
        }

        synchronized (this) {
            // Make application callbacks
            for (Iterator<RemoteService> iter = mUuidCallbackTracker.keySet().iterator();
                    iter.hasNext();) {
                RemoteService service = iter.next();
                if (service.address.equals(address)) {
                    channel = -1;
                    if (value.get(service.uuid) != null) {
                        channel = value.get(service.uuid);
                    }
                    if (channel != -1) {
                        if (DBG) log("Making callback for " + service.uuid + " with result " +
                                channel);
                        IBluetoothCallback callback = mUuidCallbackTracker.get(service);
                        if (callback != null) {
                            try {
                                callback.onRfcommChannelFound(channel);
                            } catch (RemoteException e) {Log.e(TAG, "", e);}
                        }

                        iter.remove();
                    }
                }
            }

            // Update cache
            mDeviceServiceChannelCache.put(address, value);
        }
    }

    /**
     * b is a handle to a Binder instance, so that this service can be notified
     * for Applications that terminate unexpectedly, to clean there service
     * records
     */
    public synchronized int addRfcommServiceRecord(String serviceName, ParcelUuid uuid,
            int channel, IBinder b) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
        if (!isEnabledInternal()) return -1;

        if (serviceName == null || uuid == null || channel < 1 ||
                channel > BluetoothSocket.MAX_RFCOMM_CHANNEL) {
            return -1;
        }
        if (BluetoothUuid.isUuidPresent(BluetoothUuid.RESERVED_UUIDS, uuid)) {
            Log.w(TAG, "Attempted to register a reserved UUID: " + uuid);
            return -1;
        }
        int handle = addRfcommServiceRecordNative(serviceName,
                uuid.getUuid().getMostSignificantBits(), uuid.getUuid().getLeastSignificantBits(),
                (short)channel);
        if (DBG) log("new handle " + Integer.toHexString(handle));
        if (handle == -1) {
            return -1;
        }

        int pid = Binder.getCallingPid();
        mServiceRecordToPid.put(new Integer(handle), new Integer(pid));
        try {
            b.linkToDeath(new Reaper(handle, pid), 0);
        } catch (RemoteException e) {}
        return handle;
    }

    public void removeServiceRecord(int handle) {
        mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM,
                                                "Need BLUETOOTH permission");
        checkAndRemoveRecord(handle, Binder.getCallingPid());
    }

    private synchronized void checkAndRemoveRecord(int handle, int pid) {
        Integer handleInt = new Integer(handle);
        Integer owner = mServiceRecordToPid.get(handleInt);
        if (owner != null && pid == owner.intValue()) {
            if (DBG) log("Removing service record " + Integer.toHexString(handle) + " for pid " +
                    pid);
            mServiceRecordToPid.remove(handleInt);
            removeServiceRecordNative(handle);
        }
    }

    private class Reaper implements IBinder.DeathRecipient {
        int pid;
        int handle;
        Reaper(int handle, int pid) {
            this.pid = pid;
            this.handle = handle;
        }
        public void binderDied() {
            synchronized (BluetoothService.this) {
                if (DBG) log("Tracked app " + pid + " died");
                checkAndRemoveRecord(handle, pid);
            }
        }
    }

    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent == null) return;

            String action = intent.getAction();
            if (action.equals(Intent.ACTION_AIRPLANE_MODE_CHANGED)) {
                ContentResolver resolver = context.getContentResolver();
                // Query the airplane mode from Settings.System just to make sure that
                // some random app is not sending this intent and disabling bluetooth
                boolean enabled = !isAirplaneModeOn();
                // If bluetooth is currently expected to be on, then enable or disable bluetooth
                if (Settings.Secure.getInt(resolver, Settings.Secure.BLUETOOTH_ON, 0) > 0) {
                    if (enabled) {
                        enable(false);
                    } else {
                        disable(false);
                    }
                }
            } else if (Intent.ACTION_DOCK_EVENT.equals(action)) {
                int state = intent.getIntExtra(Intent.EXTRA_DOCK_STATE,
                        Intent.EXTRA_DOCK_STATE_UNDOCKED);
                if (DBG) Log.v(TAG, "Received ACTION_DOCK_EVENT with State:" + state);
                if (state == Intent.EXTRA_DOCK_STATE_UNDOCKED) {
                    mDockAddress = null;
                    mDockPin = null;
                } else {
                    SharedPreferences.Editor editor =
                        mContext.getSharedPreferences(SHARED_PREFERENCES_NAME,
                                mContext.MODE_PRIVATE).edit();
                    editor.putBoolean(SHARED_PREFERENCE_DOCK_ADDRESS + mDockAddress, true);
                    editor.commit();
                }
            }
        }
    };

    private void registerForAirplaneMode(IntentFilter filter) {
        final ContentResolver resolver = mContext.getContentResolver();
        final String airplaneModeRadios = Settings.System.getString(resolver,
                Settings.System.AIRPLANE_MODE_RADIOS);
        final String toggleableRadios = Settings.System.getString(resolver,
                Settings.System.AIRPLANE_MODE_TOGGLEABLE_RADIOS);

        mIsAirplaneSensitive = airplaneModeRadios == null ? true :
                airplaneModeRadios.contains(Settings.System.RADIO_BLUETOOTH);
        mIsAirplaneToggleable = toggleableRadios == null ? false :
                toggleableRadios.contains(Settings.System.RADIO_BLUETOOTH);

        if (mIsAirplaneSensitive) {
            filter.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
        }
    }

    /* Returns true if airplane mode is currently on */
    private final boolean isAirplaneModeOn() {
        return Settings.System.getInt(mContext.getContentResolver(),
                Settings.System.AIRPLANE_MODE_ON, 0) == 1;
    }

    /* Broadcast the Uuid intent */
    /*package*/ synchronized void sendUuidIntent(String address) {
        ParcelUuid[] uuid = getUuidFromCache(address);
        Intent intent = new Intent(BluetoothDevice.ACTION_UUID);
        intent.putExtra(BluetoothDevice.EXTRA_DEVICE, mAdapter.getRemoteDevice(address));
        intent.putExtra(BluetoothDevice.EXTRA_UUID, uuid);
        mContext.sendBroadcast(intent, BLUETOOTH_ADMIN_PERM);

        if (mUuidIntentTracker.contains(address))
            mUuidIntentTracker.remove(address);

    }

    /*package*/ synchronized void makeServiceChannelCallbacks(String address) {
        for (Iterator<RemoteService> iter = mUuidCallbackTracker.keySet().iterator();
                iter.hasNext();) {
            RemoteService service = iter.next();
            if (service.address.equals(address)) {
                if (DBG) log("Cleaning up failed UUID channel lookup: " + service.address +
                        " " + service.uuid);
                IBluetoothCallback callback = mUuidCallbackTracker.get(service);
                if (callback != null) {
                    try {
                        callback.onRfcommChannelFound(-1);
                    } catch (RemoteException e) {Log.e(TAG, "", e);}
                }

                iter.remove();
            }
        }
    }

    @Override
    protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
        switch(mBluetoothState) {
        case BluetoothAdapter.STATE_OFF:
            pw.println("Bluetooth OFF\n");
            return;
        case BluetoothAdapter.STATE_TURNING_ON:
            pw.println("Bluetooth TURNING ON\n");
            return;
        case BluetoothAdapter.STATE_TURNING_OFF:
            pw.println("Bluetooth TURNING OFF\n");
            return;
        case BluetoothAdapter.STATE_ON:
            pw.println("Bluetooth ON\n");
        }

        pw.println("mIsAirplaneSensitive = " + mIsAirplaneSensitive);
        pw.println("mIsAirplaneToggleable = " + mIsAirplaneToggleable);

        pw.println("Local address = " + getAddress());
        pw.println("Local name = " + getName());
        pw.println("isDiscovering() = " + isDiscovering());

        BluetoothHeadset headset = new BluetoothHeadset(mContext, null);

        pw.println("\n--Known devices--");
        for (String address : mDeviceProperties.keySet()) {
            int bondState = mBondState.getBondState(address);
            pw.printf("%s %10s (%d) %s\n", address,
                       toBondStateString(bondState),
                       mBondState.getAttempt(address),
                       getRemoteName(address));

            Map<ParcelUuid, Integer> uuidChannels = mDeviceServiceChannelCache.get(address);
            if (uuidChannels == null) {
                pw.println("\tuuids = null");
            } else {
                for (ParcelUuid uuid : uuidChannels.keySet()) {
                    Integer channel = uuidChannels.get(uuid);
                    if (channel == null) {
                        pw.println("\t" + uuid);
                    } else {
                        pw.println("\t" + uuid + " RFCOMM channel = " + channel);
                    }
                }
            }
            for (RemoteService service : mUuidCallbackTracker.keySet()) {
                if (service.address.equals(address)) {
                    pw.println("\tPENDING CALLBACK: " + service.uuid);
                }
            }
        }

        String value = getProperty("Devices");
        String[] devicesObjectPath = null;
        if (value != null) {
            devicesObjectPath = value.split(",");
        }
        pw.println("\n--ACL connected devices--");
        if (devicesObjectPath != null) {
            for (String device : devicesObjectPath) {
                pw.println(getAddressFromObjectPath(device));
            }
        }

        // Rather not do this from here, but no-where else and I need this
        // dump
        pw.println("\n--Headset Service--");
        switch (headset.getState()) {
        case BluetoothHeadset.STATE_DISCONNECTED:
            pw.println("getState() = STATE_DISCONNECTED");
            break;
        case BluetoothHeadset.STATE_CONNECTING:
            pw.println("getState() = STATE_CONNECTING");
            break;
        case BluetoothHeadset.STATE_CONNECTED:
            pw.println("getState() = STATE_CONNECTED");
            break;
        case BluetoothHeadset.STATE_ERROR:
            pw.println("getState() = STATE_ERROR");
            break;
        }

        pw.println("\ngetCurrentHeadset() = " + headset.getCurrentHeadset());
        pw.println("getBatteryUsageHint() = " + headset.getBatteryUsageHint());
        headset.close();
        pw.println("\n--Application Service Records--");
        for (Integer handle : mServiceRecordToPid.keySet()) {
            Integer pid = mServiceRecordToPid.get(handle);
            pw.println("\tpid " + pid + " handle " + Integer.toHexString(handle));
        }
    }

    /* package */ static int bluezStringToScanMode(boolean pairable, boolean discoverable) {
        if (pairable && discoverable)
            return BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE;
        else if (pairable && !discoverable)
            return BluetoothAdapter.SCAN_MODE_CONNECTABLE;
        else
            return BluetoothAdapter.SCAN_MODE_NONE;
    }

    /* package */ static String scanModeToBluezString(int mode) {
        switch (mode) {
        case BluetoothAdapter.SCAN_MODE_NONE:
            return "off";
        case BluetoothAdapter.SCAN_MODE_CONNECTABLE:
            return "connectable";
        case BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE:
            return "discoverable";
        }
        return null;
    }

    /*package*/ String getAddressFromObjectPath(String objectPath) {
        String adapterObjectPath = getPropertyInternal("ObjectPath");
        if (adapterObjectPath == null || objectPath == null) {
            Log.e(TAG, "getAddressFromObjectPath: AdpaterObjectPath:" + adapterObjectPath +
                    "  or deviceObjectPath:" + objectPath + " is null");
            return null;
        }
        if (!objectPath.startsWith(adapterObjectPath)) {
            Log.e(TAG, "getAddressFromObjectPath: AdpaterObjectPath:" + adapterObjectPath +
                    "  is not a prefix of deviceObjectPath:" + objectPath +
                    "bluetoothd crashed ?");
            return null;
        }
        String address = objectPath.substring(adapterObjectPath.length());
        if (address != null) return address.replace('_', ':');

        Log.e(TAG, "getAddressFromObjectPath: Address being returned is null");
        return null;
    }

    /*package*/ String getObjectPathFromAddress(String address) {
        String path = getPropertyInternal("ObjectPath");
        if (path == null) {
            Log.e(TAG, "Error: Object Path is null");
            return null;
        }
        path = path + address.replace(":", "_");
        return path;
    }

    /*package */ void setLinkTimeout(String address, int num_slots) {
        String path = getObjectPathFromAddress(address);
        boolean result = setLinkTimeoutNative(path, num_slots);

        if (!result) log("Set Link Timeout to:" + num_slots + " slots failed");
    }

    private static void log(String msg) {
        Log.d(TAG, msg);
    }

    private native static void classInitNative();
    private native void initializeNativeDataNative();
    private native boolean setupNativeDataNative();
    private native boolean tearDownNativeDataNative();
    private native void cleanupNativeDataNative();
    private native String getAdapterPathNative();

    private native int isEnabledNative();
    private native int enableNative();
    private native int disableNative();

    private native Object[] getAdapterPropertiesNative();
    private native Object[] getDevicePropertiesNative(String objectPath);
    private native boolean setAdapterPropertyStringNative(String key, String value);
    private native boolean setAdapterPropertyIntegerNative(String key, int value);
    private native boolean setAdapterPropertyBooleanNative(String key, int value);

    private native boolean startDiscoveryNative();
    private native boolean stopDiscoveryNative();

    private native boolean createPairedDeviceNative(String address, int timeout_ms);
    private native boolean cancelDeviceCreationNative(String address);
    private native boolean removeDeviceNative(String objectPath);
    private native int getDeviceServiceChannelNative(String objectPath, String uuid,
            int attributeId);

    private native boolean cancelPairingUserInputNative(String address, int nativeData);
    private native boolean setPinNative(String address, String pin, int nativeData);
    private native boolean setPasskeyNative(String address, int passkey, int nativeData);
    private native boolean setPairingConfirmationNative(String address, boolean confirm,
            int nativeData);
    private native boolean setDevicePropertyBooleanNative(String objectPath, String key,
            int value);
    private native boolean createDeviceNative(String address);
    /*package*/ native boolean discoverServicesNative(String objectPath, String pattern);

    private native int addRfcommServiceRecordNative(String name, long uuidMsb, long uuidLsb,
            short channel);
    private native boolean removeServiceRecordNative(int handle);
    private native boolean setLinkTimeoutNative(String path, int num_slots);
}

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