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/*
* Copyright (C) 2012 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.
*/
package com.android.bluetooth.btservice;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothClass;
import android.bluetooth.BluetoothDevice;
import android.content.Context;
import android.content.Intent;
import android.os.Handler;
import android.os.Message;
import android.os.ParcelUuid;
import android.util.Log;
import com.android.bluetooth.Utils;
import com.android.bluetooth.btservice.RemoteDevices.DeviceProperties;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
final class RemoteDevices {
private static final boolean DBG = false;
private static final String TAG = "BluetoothRemoteDevices";
private static BluetoothAdapter mAdapter;
private static AdapterService mAdapterService;
private static ArrayList<BluetoothDevice> mSdpTracker;
private Object mObject = new Object();
private static final int UUID_INTENT_DELAY = 6000;
private static final int MESSAGE_UUID_INTENT = 1;
private HashMap<BluetoothDevice, DeviceProperties> mDevices;
RemoteDevices(AdapterService service) {
mAdapter = BluetoothAdapter.getDefaultAdapter();
mAdapterService = service;
mSdpTracker = new ArrayList<BluetoothDevice>();
mDevices = new HashMap<BluetoothDevice, DeviceProperties>();
}
void cleanup() {
if (mSdpTracker !=null)
mSdpTracker.clear();
if (mDevices != null)
mDevices.clear();
}
public Object Clone() throws CloneNotSupportedException {
throw new CloneNotSupportedException();
}
DeviceProperties getDeviceProperties(BluetoothDevice device) {
synchronized (mDevices) {
return mDevices.get(device);
}
}
BluetoothDevice getDevice(byte[] address) {
for (BluetoothDevice dev : mDevices.keySet()) {
if (dev.getAddress().equals(Utils.getAddressStringFromByte(address))) {
return dev;
}
}
return null;
}
DeviceProperties addDeviceProperties(byte[] address) {
synchronized (mDevices) {
DeviceProperties prop = new DeviceProperties();
BluetoothDevice device =
mAdapter.getRemoteDevice(Utils.getAddressStringFromByte(address));
prop.mAddress = address;
mDevices.put(device, prop);
return prop;
}
}
class DeviceProperties {
private String mName;
private byte[] mAddress;
private int mBluetoothClass;
private short mRssi;
private ParcelUuid[] mUuids;
private int mDeviceType;
private String mAlias;
private int mBondState;
DeviceProperties() {
mBondState = BluetoothDevice.BOND_NONE;
}
/**
* @return the mName
*/
String getName() {
synchronized (mObject) {
return mName;
}
}
/**
* @return the mClass
*/
int getBluetoothClass() {
synchronized (mObject) {
return mBluetoothClass;
}
}
/**
* @return the mUuids
*/
ParcelUuid[] getUuids() {
synchronized (mObject) {
return mUuids;
}
}
/**
* @return the mAddress
*/
byte[] getAddress() {
synchronized (mObject) {
return mAddress;
}
}
/**
* @return mRssi
*/
short getRssi() {
synchronized (mObject) {
return mRssi;
}
}
/**
* @return mDeviceType
*/
int getDeviceType() {
synchronized (mObject) {
return mDeviceType;
}
}
/**
* @return the mAlias
*/
String getAlias() {
synchronized (mObject) {
return mAlias;
}
}
/**
* @param mAlias the mAlias to set
*/
void setAlias(String mAlias) {
synchronized (mObject) {
mAdapterService.setDevicePropertyNative(mAddress,
AbstractionLayer.BT_PROPERTY_REMOTE_FRIENDLY_NAME, mAlias.getBytes());
}
}
/**
* @param mBondState the mBondState to set
*/
void setBondState(int mBondState) {
synchronized (mObject) {
this.mBondState = mBondState;
if (mBondState == BluetoothDevice.BOND_NONE)
{
/* Clearing the Uuids local copy when the device is unpaired. If not cleared,
cachedBluetoothDevice issued a connect using the local cached copy of uuids,
without waiting for the ACTION_UUID intent.
This was resulting in multiple calls to connect().*/
mUuids = null;
}
}
}
/**
* @return the mBondState
*/
int getBondState() {
synchronized (mObject) {
return mBondState;
}
}
}
private void sendUuidIntent(BluetoothDevice device) {
DeviceProperties prop = getDeviceProperties(device);
Intent intent = new Intent(BluetoothDevice.ACTION_UUID);
intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
intent.putExtra(BluetoothDevice.EXTRA_UUID, prop == null? null: prop.mUuids);
mAdapterService.sendBroadcast(intent, AdapterService.BLUETOOTH_ADMIN_PERM);
//Remove the outstanding UUID request
mSdpTracker.remove(device);
}
private void sendDisplayPinIntent(byte[] address, int pin) {
Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
intent.putExtra(BluetoothDevice.EXTRA_DEVICE, getDevice(address));
intent.putExtra(BluetoothDevice.EXTRA_PAIRING_KEY, pin);
intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
BluetoothDevice.PAIRING_VARIANT_DISPLAY_PIN);
mAdapterService.sendBroadcast(intent, mAdapterService.BLUETOOTH_ADMIN_PERM);
}
void devicePropertyChangedCallback(byte[] address, int[] types, byte[][] values) {
Intent intent;
byte[] val;
int type;
BluetoothDevice bdDevice = getDevice(address);
DeviceProperties device;
if (bdDevice == null) {
device = addDeviceProperties(address);
bdDevice = getDevice(address);
} else {
device = getDeviceProperties(bdDevice);
}
for (int j = 0; j < types.length; j++) {
type = types[j];
val = values[j];
if(val.length <= 0)
errorLog("devicePropertyChangedCallback: bdDevice: " + bdDevice + ", value is empty for type: " + type);
else {
synchronized(mObject) {
switch (type) {
case AbstractionLayer.BT_PROPERTY_BDNAME:
device.mName = new String(val);
intent = new Intent(BluetoothDevice.ACTION_NAME_CHANGED);
intent.putExtra(BluetoothDevice.EXTRA_DEVICE, bdDevice);
intent.putExtra(BluetoothDevice.EXTRA_NAME, device.mName);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
mAdapterService.sendBroadcast(intent, mAdapterService.BLUETOOTH_PERM);
debugLog("Remote Device name is: " + device.mName);
break;
case AbstractionLayer.BT_PROPERTY_REMOTE_FRIENDLY_NAME:
if (device.mAlias != null) {
System.arraycopy(val, 0, device.mAlias, 0, val.length);
}
else {
device.mAlias = new String(val);
}
break;
case AbstractionLayer.BT_PROPERTY_BDADDR:
device.mAddress = val;
debugLog("Remote Address is:" + Utils.getAddressStringFromByte(val));
break;
case AbstractionLayer.BT_PROPERTY_CLASS_OF_DEVICE:
device.mBluetoothClass = Utils.byteArrayToInt(val);
intent = new Intent(BluetoothDevice.ACTION_CLASS_CHANGED);
intent.putExtra(BluetoothDevice.EXTRA_DEVICE, bdDevice);
intent.putExtra(BluetoothDevice.EXTRA_CLASS,
new BluetoothClass(device.mBluetoothClass));
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
mAdapterService.sendBroadcast(intent, mAdapterService.BLUETOOTH_PERM);
debugLog("Remote class is:" + device.mBluetoothClass);
break;
case AbstractionLayer.BT_PROPERTY_UUIDS:
int numUuids = val.length/AbstractionLayer.BT_UUID_SIZE;
device.mUuids = Utils.byteArrayToUuid(val);
sendUuidIntent(bdDevice);
break;
case AbstractionLayer.BT_PROPERTY_TYPE_OF_DEVICE:
// The device type from hal layer, defined in bluetooth.h,
// matches the type defined in BluetoothDevice.java
device.mDeviceType = Utils.byteArrayToInt(val);
break;
case AbstractionLayer.BT_PROPERTY_REMOTE_RSSI:
// RSSI from hal is in one byte
device.mRssi = val[0];
break;
}
}
}
}
}
void deviceFoundCallback(byte[] address) {
// The device properties are already registered - we can send the intent
// now
BluetoothDevice device = getDevice(address);
debugLog("deviceFoundCallback: Remote Address is:" + device);
DeviceProperties deviceProp = getDeviceProperties(device);
if (deviceProp == null) {
errorLog("Device Properties is null for Device:" + device);
return;
}
Intent intent = new Intent(BluetoothDevice.ACTION_FOUND);
intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
intent.putExtra(BluetoothDevice.EXTRA_CLASS,
new BluetoothClass(Integer.valueOf(deviceProp.mBluetoothClass)));
intent.putExtra(BluetoothDevice.EXTRA_RSSI, deviceProp.mRssi);
intent.putExtra(BluetoothDevice.EXTRA_NAME, deviceProp.mName);
mAdapterService.sendBroadcast(intent, mAdapterService.BLUETOOTH_PERM);
}
void pinRequestCallback(byte[] address, byte[] name, int cod) {
//TODO(BT): Get wakelock and update name and cod
BluetoothDevice bdDevice = getDevice(address);
if (bdDevice == null) {
addDeviceProperties(address);
}
BluetoothClass btClass = bdDevice.getBluetoothClass();
int btDeviceClass = btClass.getDeviceClass();
if (btDeviceClass == BluetoothClass.Device.PERIPHERAL_KEYBOARD ||
btDeviceClass == BluetoothClass.Device.PERIPHERAL_KEYBOARD_POINTING) {
// Its a keyboard. Follow the HID spec recommendation of creating the
// passkey and displaying it to the user. If the keyboard doesn't follow
// the spec recommendation, check if the keyboard has a fixed PIN zero
// and pair.
//TODO: Add sFixedPinZerosAutoPairKeyboard() and maintain list of devices that have fixed pin
/*if (mAdapterService.isFixedPinZerosAutoPairKeyboard(address)) {
mAdapterService.setPin(address, BluetoothDevice.convertPinToBytes("0000"));
return;
}*/
// Generate a variable PIN. This is not truly random but good enough.
int pin = (int) Math.floor(Math.random() * 1000000);
sendDisplayPinIntent(address, pin);
return;
}
infoLog("pinRequestCallback: " + address + " name:" + name + " cod:" +
cod);
Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
intent.putExtra(BluetoothDevice.EXTRA_DEVICE, getDevice(address));
intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
BluetoothDevice.PAIRING_VARIANT_PIN);
mAdapterService.sendBroadcast(intent, mAdapterService.BLUETOOTH_ADMIN_PERM);
return;
}
void sspRequestCallback(byte[] address, byte[] name, int cod, int pairingVariant,
int passkey) {
//TODO(BT): Get wakelock and update name and cod
BluetoothDevice bdDevice = getDevice(address);
if (bdDevice == null) {
addDeviceProperties(address);
}
infoLog("sspRequestCallback: " + address + " name: " + name + " cod: " +
cod + " pairingVariant " + pairingVariant + " passkey: " + passkey);
int variant;
boolean displayPasskey = false;
if (pairingVariant == AbstractionLayer.BT_SSP_VARIANT_PASSKEY_CONFIRMATION) {
variant = BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION;
displayPasskey = true;
} else if (pairingVariant == AbstractionLayer.BT_SSP_VARIANT_CONSENT) {
variant = BluetoothDevice.PAIRING_VARIANT_CONSENT;
} else if (pairingVariant == AbstractionLayer.BT_SSP_VARIANT_PASSKEY_ENTRY) {
variant = BluetoothDevice.PAIRING_VARIANT_PASSKEY;
} else if (pairingVariant == AbstractionLayer.BT_SSP_VARIANT_PASSKEY_NOTIFICATION) {
variant = BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY;
displayPasskey = true;
} else {
errorLog("SSP Pairing variant not present");
return;
}
BluetoothDevice device = getDevice(address);
if (device == null) {
warnLog("Device is not known for:" + Utils.getAddressStringFromByte(address));
addDeviceProperties(address);
device = getDevice(address);
}
Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
if (displayPasskey) {
intent.putExtra(BluetoothDevice.EXTRA_PAIRING_KEY, passkey);
}
intent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, variant);
mAdapterService.sendBroadcast(intent, mAdapterService.BLUETOOTH_ADMIN_PERM);
}
void aclStateChangeCallback(int status, byte[] address, int newState) {
BluetoothDevice device = getDevice(address);
if (device == null) {
errorLog("aclStateChangeCallback: Device is NULL");
return;
}
Intent intent = null;
if (newState == AbstractionLayer.BT_ACL_STATE_CONNECTED) {
intent = new Intent(BluetoothDevice.ACTION_ACL_CONNECTED);
debugLog("aclStateChangeCallback: State:Connected to Device:" + device);
} else {
intent = new Intent(BluetoothDevice.ACTION_ACL_DISCONNECTED);
debugLog("aclStateChangeCallback: State:DisConnected to Device:" + device);
}
intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
mAdapterService.sendBroadcast(intent, mAdapterService.BLUETOOTH_PERM);
}
void fetchUuids(BluetoothDevice device) {
if (mSdpTracker.contains(device)) return;
mSdpTracker.add(device);
Message message = mHandler.obtainMessage(MESSAGE_UUID_INTENT);
message.obj = device;
mHandler.sendMessageDelayed(message, UUID_INTENT_DELAY);
//mAdapterService.getDevicePropertyNative(Utils.getBytesFromAddress(device.getAddress()), AbstractionLayer.BT_PROPERTY_UUIDS);
mAdapterService.getRemoteServicesNative(Utils.getBytesFromAddress(device.getAddress()));
}
private final Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_UUID_INTENT:
BluetoothDevice device = (BluetoothDevice)msg.obj;
if (device != null) {
sendUuidIntent(device);
}
break;
}
}
};
private void errorLog(String msg) {
Log.e(TAG, msg);
}
private void debugLog(String msg) {
if (DBG) Log.d(TAG, msg);
}
private void infoLog(String msg) {
if (DBG) Log.i(TAG, msg);
}
private void warnLog(String msg) {
Log.w(TAG, msg);
}
}