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android / platform / prebuilts / fullsdk / sources / android-30 / refs/heads/androidx-core-release / . / com / android / server / BluetoothManagerService.java
blob: 3c0d880916eefdc76e9844f6c291039c840b7f87 [file] [log] [blame]
/*
* 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.server;
import static android.content.pm.PackageManager.MATCH_SYSTEM_ONLY;
import static android.os.UserHandle.USER_SYSTEM;
import android.Manifest;
import android.app.ActivityManager;
import android.app.AppGlobals;
import android.app.AppOpsManager;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothProfile;
import android.bluetooth.BluetoothProtoEnums;
import android.bluetooth.IBluetooth;
import android.bluetooth.IBluetoothCallback;
import android.bluetooth.IBluetoothGatt;
import android.bluetooth.IBluetoothHeadset;
import android.bluetooth.IBluetoothManager;
import android.bluetooth.IBluetoothManagerCallback;
import android.bluetooth.IBluetoothProfileServiceConnection;
import android.bluetooth.IBluetoothStateChangeCallback;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageManager;
import android.content.pm.PackageManager;
import android.content.pm.PackageManagerInternal;
import android.content.pm.UserInfo;
import android.database.ContentObserver;
import android.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.Process;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.os.UserManager;
import android.os.UserManagerInternal;
import android.os.UserManagerInternal.UserRestrictionsListener;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;
import android.text.TextUtils;
import android.util.FeatureFlagUtils;
import android.util.Log;
import android.util.Slog;
import android.util.proto.ProtoOutputStream;
import com.android.internal.R;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.util.DumpUtils;
import com.android.internal.util.FrameworkStatsLog;
import com.android.server.pm.UserRestrictionsUtils;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Locale;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantReadWriteLock;
class BluetoothManagerService extends IBluetoothManager.Stub {
private static final String TAG = "BluetoothManagerService";
private static final boolean DBG = true;
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 SECURE_SETTINGS_BLUETOOTH_ADDR_VALID = "bluetooth_addr_valid";
private static final String SECURE_SETTINGS_BLUETOOTH_ADDRESS = "bluetooth_address";
private static final String SECURE_SETTINGS_BLUETOOTH_NAME = "bluetooth_name";
private static final int ACTIVE_LOG_MAX_SIZE = 20;
private static final int CRASH_LOG_MAX_SIZE = 100;
private static final int TIMEOUT_BIND_MS = 3000; //Maximum msec to wait for a bind
//Maximum msec to wait for service restart
private static final int SERVICE_RESTART_TIME_MS = 400;
//Maximum msec to wait for restart due to error
private static final int ERROR_RESTART_TIME_MS = 3000;
//Maximum msec to delay MESSAGE_USER_SWITCHED
private static final int USER_SWITCHED_TIME_MS = 200;
// Delay for the addProxy function in msec
private static final int ADD_PROXY_DELAY_MS = 100;
// Delay for retrying enable and disable in msec
private static final int ENABLE_DISABLE_DELAY_MS = 300;
private static final int MESSAGE_ENABLE = 1;
private static final int MESSAGE_DISABLE = 2;
private static final int MESSAGE_HANDLE_ENABLE_DELAYED = 3;
private static final int MESSAGE_HANDLE_DISABLE_DELAYED = 4;
private static final int MESSAGE_REGISTER_STATE_CHANGE_CALLBACK = 30;
private static final int MESSAGE_UNREGISTER_STATE_CHANGE_CALLBACK = 31;
private static final int MESSAGE_BLUETOOTH_SERVICE_CONNECTED = 40;
private static final int MESSAGE_BLUETOOTH_SERVICE_DISCONNECTED = 41;
private static final int MESSAGE_RESTART_BLUETOOTH_SERVICE = 42;
private static final int MESSAGE_BLUETOOTH_STATE_CHANGE = 60;
private static final int MESSAGE_TIMEOUT_BIND = 100;
private static final int MESSAGE_TIMEOUT_UNBIND = 101;
private static final int MESSAGE_GET_NAME_AND_ADDRESS = 200;
private static final int MESSAGE_USER_SWITCHED = 300;
private static final int MESSAGE_USER_UNLOCKED = 301;
private static final int MESSAGE_ADD_PROXY_DELAYED = 400;
private static final int MESSAGE_BIND_PROFILE_SERVICE = 401;
private static final int MESSAGE_RESTORE_USER_SETTING = 500;
private static final int RESTORE_SETTING_TO_ON = 1;
private static final int RESTORE_SETTING_TO_OFF = 0;
private static final int MAX_ERROR_RESTART_RETRIES = 6;
private static final int MAX_WAIT_FOR_ENABLE_DISABLE_RETRIES = 10;
// Bluetooth persisted setting is off
private static final int BLUETOOTH_OFF = 0;
// Bluetooth persisted setting is on
// and Airplane mode won't affect Bluetooth state at start up
private static final int BLUETOOTH_ON_BLUETOOTH = 1;
// Bluetooth persisted setting is on
// but Airplane mode will affect Bluetooth state at start up
// and Airplane mode will have higher priority.
@VisibleForTesting
static final int BLUETOOTH_ON_AIRPLANE = 2;
private static final int SERVICE_IBLUETOOTH = 1;
private static final int SERVICE_IBLUETOOTHGATT = 2;
private final Context mContext;
// Locks are not provided for mName and mAddress.
// They are accessed in handler or broadcast receiver, same thread context.
private String mAddress;
private String mName;
private final ContentResolver mContentResolver;
private final RemoteCallbackList<IBluetoothManagerCallback> mCallbacks;
private final RemoteCallbackList<IBluetoothStateChangeCallback> mStateChangeCallbacks;
private IBinder mBluetoothBinder;
private IBluetooth mBluetooth;
private IBluetoothGatt mBluetoothGatt;
private final ReentrantReadWriteLock mBluetoothLock = new ReentrantReadWriteLock();
private boolean mBinding;
private boolean mUnbinding;
private int mWaitForEnableRetry;
private int mWaitForDisableRetry;
private BluetoothAirplaneModeListener mBluetoothAirplaneModeListener;
// used inside handler thread
private boolean mQuietEnable = false;
private boolean mEnable;
private static CharSequence timeToLog(long timestamp) {
return android.text.format.DateFormat.format("MM-dd HH:mm:ss", timestamp);
}
/**
* Used for tracking apps that enabled / disabled Bluetooth.
*/
private class ActiveLog {
private int mReason;
private String mPackageName;
private boolean mEnable;
private long mTimestamp;
ActiveLog(int reason, String packageName, boolean enable, long timestamp) {
mReason = reason;
mPackageName = packageName;
mEnable = enable;
mTimestamp = timestamp;
}
public String toString() {
return timeToLog(mTimestamp) + (mEnable ? " Enabled " : " Disabled ")
+ " due to " + getEnableDisableReasonString(mReason) + " by " + mPackageName;
}
void dump(ProtoOutputStream proto) {
proto.write(BluetoothManagerServiceDumpProto.ActiveLog.TIMESTAMP_MS, mTimestamp);
proto.write(BluetoothManagerServiceDumpProto.ActiveLog.ENABLE, mEnable);
proto.write(BluetoothManagerServiceDumpProto.ActiveLog.PACKAGE_NAME, mPackageName);
proto.write(BluetoothManagerServiceDumpProto.ActiveLog.REASON, mReason);
}
}
private final LinkedList<ActiveLog> mActiveLogs = new LinkedList<>();
private final LinkedList<Long> mCrashTimestamps = new LinkedList<>();
private int mCrashes;
private long mLastEnabledTime;
// configuration from external IBinder call which is used to
// synchronize with broadcast receiver.
private boolean mQuietEnableExternal;
private boolean mEnableExternal;
// Map of apps registered to keep BLE scanning on.
private Map<IBinder, ClientDeathRecipient> mBleApps =
new ConcurrentHashMap<IBinder, ClientDeathRecipient>();
private int mState;
private final BluetoothHandler mHandler;
private int mErrorRecoveryRetryCounter;
private final int mSystemUiUid;
private boolean mIsHearingAidProfileSupported;
private AppOpsManager mAppOps;
// Save a ProfileServiceConnections object for each of the bound
// bluetooth profile services
private final Map<Integer, ProfileServiceConnections> mProfileServices = new HashMap<>();
private final boolean mWirelessConsentRequired;
private final IBluetoothCallback mBluetoothCallback = new IBluetoothCallback.Stub() {
@Override
public void onBluetoothStateChange(int prevState, int newState) throws RemoteException {
Message msg =
mHandler.obtainMessage(MESSAGE_BLUETOOTH_STATE_CHANGE, prevState, newState);
mHandler.sendMessage(msg);
}
};
private final UserRestrictionsListener mUserRestrictionsListener =
new UserRestrictionsListener() {
@Override
public void onUserRestrictionsChanged(int userId, Bundle newRestrictions,
Bundle prevRestrictions) {
if (UserRestrictionsUtils.restrictionsChanged(prevRestrictions, newRestrictions,
UserManager.DISALLOW_BLUETOOTH_SHARING)) {
updateOppLauncherComponentState(userId,
newRestrictions.getBoolean(UserManager.DISALLOW_BLUETOOTH_SHARING));
}
// DISALLOW_BLUETOOTH can only be set by DO or PO on the system user.
if (userId == USER_SYSTEM
&& UserRestrictionsUtils.restrictionsChanged(prevRestrictions,
newRestrictions, UserManager.DISALLOW_BLUETOOTH)) {
if (userId == USER_SYSTEM && newRestrictions.getBoolean(
UserManager.DISALLOW_BLUETOOTH)) {
updateOppLauncherComponentState(userId, true); // Sharing disallowed
sendDisableMsg(BluetoothProtoEnums.ENABLE_DISABLE_REASON_DISALLOWED,
mContext.getPackageName());
} else {
updateOppLauncherComponentState(userId, newRestrictions.getBoolean(
UserManager.DISALLOW_BLUETOOTH_SHARING));
}
}
}
};
public boolean onFactoryReset() {
// Wait for stable state if bluetooth is temporary state.
int state = getState();
if (state == BluetoothAdapter.STATE_BLE_TURNING_ON
|| state == BluetoothAdapter.STATE_TURNING_ON
|| state == BluetoothAdapter.STATE_TURNING_OFF) {
if (!waitForState(Set.of(BluetoothAdapter.STATE_BLE_ON, BluetoothAdapter.STATE_ON))) {
return false;
}
}
// Clear registered LE apps to force shut-off Bluetooth
clearBleApps();
state = getState();
try {
mBluetoothLock.readLock().lock();
if (mBluetooth == null) {
return false;
}
if (state == BluetoothAdapter.STATE_BLE_ON) {
addActiveLog(
BluetoothProtoEnums.ENABLE_DISABLE_REASON_FACTORY_RESET,
mContext.getPackageName(), false);
mBluetooth.onBrEdrDown();
return true;
} else if (state == BluetoothAdapter.STATE_ON) {
addActiveLog(
BluetoothProtoEnums.ENABLE_DISABLE_REASON_FACTORY_RESET,
mContext.getPackageName(), false);
mBluetooth.disable();
return true;
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to shutdown Bluetooth", e);
} finally {
mBluetoothLock.readLock().unlock();
}
return false;
}
public void onAirplaneModeChanged() {
synchronized (this) {
if (isBluetoothPersistedStateOn()) {
if (isAirplaneModeOn()) {
persistBluetoothSetting(BLUETOOTH_ON_AIRPLANE);
} else {
persistBluetoothSetting(BLUETOOTH_ON_BLUETOOTH);
}
}
int st = BluetoothAdapter.STATE_OFF;
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
st = mBluetooth.getState();
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call getState", e);
return;
} finally {
mBluetoothLock.readLock().unlock();
}
Slog.d(TAG,
"Airplane Mode change - current state: " + BluetoothAdapter.nameForState(
st) + ", isAirplaneModeOn()=" + isAirplaneModeOn());
if (isAirplaneModeOn()) {
// Clear registered LE apps to force shut-off
clearBleApps();
// If state is BLE_ON make sure we trigger disableBLE
if (st == BluetoothAdapter.STATE_BLE_ON) {
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
addActiveLog(
BluetoothProtoEnums.ENABLE_DISABLE_REASON_AIRPLANE_MODE,
mContext.getPackageName(), false);
mBluetooth.onBrEdrDown();
mEnable = false;
mEnableExternal = false;
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call onBrEdrDown", e);
} finally {
mBluetoothLock.readLock().unlock();
}
} else if (st == BluetoothAdapter.STATE_ON) {
sendDisableMsg(BluetoothProtoEnums.ENABLE_DISABLE_REASON_AIRPLANE_MODE,
mContext.getPackageName());
}
} else if (mEnableExternal) {
sendEnableMsg(mQuietEnableExternal,
BluetoothProtoEnums.ENABLE_DISABLE_REASON_AIRPLANE_MODE,
mContext.getPackageName());
}
}
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED.equals(action)) {
String newName = intent.getStringExtra(BluetoothAdapter.EXTRA_LOCAL_NAME);
if (DBG) {
Slog.d(TAG, "Bluetooth Adapter name changed to " + newName);
}
if (newName != null) {
storeNameAndAddress(newName, null);
}
} else if (BluetoothAdapter.ACTION_BLUETOOTH_ADDRESS_CHANGED.equals(action)) {
String newAddress = intent.getStringExtra(BluetoothAdapter.EXTRA_BLUETOOTH_ADDRESS);
if (newAddress != null) {
if (DBG) {
Slog.d(TAG, "Bluetooth Adapter address changed to " + newAddress);
}
storeNameAndAddress(null, newAddress);
} else {
if (DBG) {
Slog.e(TAG, "No Bluetooth Adapter address parameter found");
}
}
} else if (Intent.ACTION_SETTING_RESTORED.equals(action)) {
final String name = intent.getStringExtra(Intent.EXTRA_SETTING_NAME);
if (Settings.Global.BLUETOOTH_ON.equals(name)) {
// The Bluetooth On state may be changed during system restore.
final String prevValue =
intent.getStringExtra(Intent.EXTRA_SETTING_PREVIOUS_VALUE);
final String newValue = intent.getStringExtra(Intent.EXTRA_SETTING_NEW_VALUE);
if (DBG) {
Slog.d(TAG,
"ACTION_SETTING_RESTORED with BLUETOOTH_ON, prevValue=" + prevValue
+ ", newValue=" + newValue);
}
if ((newValue != null) && (prevValue != null) && !prevValue.equals(newValue)) {
Message msg = mHandler.obtainMessage(MESSAGE_RESTORE_USER_SETTING,
newValue.equals("0") ? RESTORE_SETTING_TO_OFF
: RESTORE_SETTING_TO_ON, 0);
mHandler.sendMessage(msg);
}
}
}
}
};
BluetoothManagerService(Context context) {
mHandler = new BluetoothHandler(IoThread.get().getLooper());
mContext = context;
mWirelessConsentRequired = context.getResources()
.getBoolean(com.android.internal.R.bool.config_wirelessConsentRequired);
mCrashes = 0;
mBluetooth = null;
mBluetoothBinder = null;
mBluetoothGatt = null;
mBinding = false;
mUnbinding = false;
mEnable = false;
mState = BluetoothAdapter.STATE_OFF;
mQuietEnableExternal = false;
mEnableExternal = false;
mAddress = null;
mName = null;
mErrorRecoveryRetryCounter = 0;
mContentResolver = context.getContentResolver();
// Observe BLE scan only mode settings change.
registerForBleScanModeChange();
mCallbacks = new RemoteCallbackList<IBluetoothManagerCallback>();
mStateChangeCallbacks = new RemoteCallbackList<IBluetoothStateChangeCallback>();
mIsHearingAidProfileSupported = context.getResources()
.getBoolean(com.android.internal.R.bool.config_hearing_aid_profile_supported);
// TODO: We need a more generic way to initialize the persist keys of FeatureFlagUtils
String value = SystemProperties.get(FeatureFlagUtils.PERSIST_PREFIX + FeatureFlagUtils.HEARING_AID_SETTINGS);
if (!TextUtils.isEmpty(value)) {
boolean isHearingAidEnabled = Boolean.parseBoolean(value);
Log.v(TAG, "set feature flag HEARING_AID_SETTINGS to " + isHearingAidEnabled);
FeatureFlagUtils.setEnabled(context, FeatureFlagUtils.HEARING_AID_SETTINGS, isHearingAidEnabled);
if (isHearingAidEnabled && !mIsHearingAidProfileSupported) {
// Overwrite to enable support by FeatureFlag
mIsHearingAidProfileSupported = true;
}
}
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED);
filter.addAction(BluetoothAdapter.ACTION_BLUETOOTH_ADDRESS_CHANGED);
filter.addAction(Intent.ACTION_SETTING_RESTORED);
filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
mContext.registerReceiver(mReceiver, filter);
loadStoredNameAndAddress();
if (isBluetoothPersistedStateOn()) {
if (DBG) {
Slog.d(TAG, "Startup: Bluetooth persisted state is ON.");
}
mEnableExternal = true;
}
String airplaneModeRadios =
Settings.Global.getString(mContentResolver, Settings.Global.AIRPLANE_MODE_RADIOS);
if (airplaneModeRadios == null || airplaneModeRadios.contains(
Settings.Global.RADIO_BLUETOOTH)) {
mBluetoothAirplaneModeListener = new BluetoothAirplaneModeListener(
this, IoThread.get().getLooper(), context);
}
int systemUiUid = -1;
// Check if device is configured with no home screen, which implies no SystemUI.
boolean noHome = mContext.getResources().getBoolean(R.bool.config_noHomeScreen);
if (!noHome) {
PackageManagerInternal pm = LocalServices.getService(PackageManagerInternal.class);
systemUiUid = pm.getPackageUid(pm.getSystemUiServiceComponent().getPackageName(),
MATCH_SYSTEM_ONLY, USER_SYSTEM);
}
if (systemUiUid >= 0) {
Slog.d(TAG, "Detected SystemUiUid: " + Integer.toString(systemUiUid));
} else {
// Some platforms, such as wearables do not have a system ui.
Slog.w(TAG, "Unable to resolve SystemUI's UID.");
}
mSystemUiUid = systemUiUid;
}
/**
* Returns true if airplane mode is currently on
*/
private boolean isAirplaneModeOn() {
return Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.AIRPLANE_MODE_ON, 0) == 1;
}
private boolean supportBluetoothPersistedState() {
return mContext.getResources().getBoolean(R.bool.config_supportBluetoothPersistedState);
}
/**
* Returns true if the Bluetooth saved state is "on"
*/
private boolean isBluetoothPersistedStateOn() {
if (!supportBluetoothPersistedState()) {
return false;
}
int state = Settings.Global.getInt(mContentResolver, Settings.Global.BLUETOOTH_ON, -1);
if (DBG) {
Slog.d(TAG, "Bluetooth persisted state: " + state);
}
return state != BLUETOOTH_OFF;
}
private boolean isBluetoothPersistedStateOnAirplane() {
if (!supportBluetoothPersistedState()) {
return false;
}
int state = Settings.Global.getInt(mContentResolver, Settings.Global.BLUETOOTH_ON, -1);
if (DBG) {
Slog.d(TAG, "Bluetooth persisted state: " + state);
}
return state == BLUETOOTH_ON_AIRPLANE;
}
/**
* Returns true if the Bluetooth saved state is BLUETOOTH_ON_BLUETOOTH
*/
private boolean isBluetoothPersistedStateOnBluetooth() {
if (!supportBluetoothPersistedState()) {
return false;
}
return Settings.Global.getInt(mContentResolver, Settings.Global.BLUETOOTH_ON,
BLUETOOTH_ON_BLUETOOTH) == BLUETOOTH_ON_BLUETOOTH;
}
/**
* Save the Bluetooth on/off state
*/
private void persistBluetoothSetting(int value) {
if (DBG) {
Slog.d(TAG, "Persisting Bluetooth Setting: " + value);
}
// waive WRITE_SECURE_SETTINGS permission check
long callingIdentity = Binder.clearCallingIdentity();
Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.BLUETOOTH_ON, value);
Binder.restoreCallingIdentity(callingIdentity);
}
/**
* Returns true if the Bluetooth Adapter's name and address is
* locally cached
* @return
*/
private boolean isNameAndAddressSet() {
return mName != null && mAddress != null && mName.length() > 0 && mAddress.length() > 0;
}
/**
* Retrieve the Bluetooth Adapter's name and address and save it in
* in the local cache
*/
private void loadStoredNameAndAddress() {
if (DBG) {
Slog.d(TAG, "Loading stored name and address");
}
if (mContext.getResources()
.getBoolean(com.android.internal.R.bool.config_bluetooth_address_validation)
&& Settings.Secure.getInt(mContentResolver, SECURE_SETTINGS_BLUETOOTH_ADDR_VALID, 0)
== 0) {
// if the valid flag is not set, don't load the address and name
if (DBG) {
Slog.d(TAG, "invalid bluetooth name and address stored");
}
return;
}
mName = Settings.Secure.getString(mContentResolver, SECURE_SETTINGS_BLUETOOTH_NAME);
mAddress = Settings.Secure.getString(mContentResolver, SECURE_SETTINGS_BLUETOOTH_ADDRESS);
if (DBG) {
Slog.d(TAG, "Stored bluetooth Name=" + mName + ",Address=" + mAddress);
}
}
/**
* Save the Bluetooth name and address in the persistent store.
* Only non-null values will be saved.
* @param name
* @param address
*/
private void storeNameAndAddress(String name, String address) {
if (name != null) {
Settings.Secure.putString(mContentResolver, SECURE_SETTINGS_BLUETOOTH_NAME, name);
mName = name;
if (DBG) {
Slog.d(TAG, "Stored Bluetooth name: " + Settings.Secure.getString(mContentResolver,
SECURE_SETTINGS_BLUETOOTH_NAME));
}
}
if (address != null) {
Settings.Secure.putString(mContentResolver, SECURE_SETTINGS_BLUETOOTH_ADDRESS, address);
mAddress = address;
if (DBG) {
Slog.d(TAG,
"Stored Bluetoothaddress: " + Settings.Secure.getString(mContentResolver,
SECURE_SETTINGS_BLUETOOTH_ADDRESS));
}
}
if ((name != null) && (address != null)) {
Settings.Secure.putInt(mContentResolver, SECURE_SETTINGS_BLUETOOTH_ADDR_VALID, 1);
}
}
public IBluetooth registerAdapter(IBluetoothManagerCallback callback) {
if (callback == null) {
Slog.w(TAG, "Callback is null in registerAdapter");
return null;
}
synchronized (mCallbacks) {
mCallbacks.register(callback);
}
return mBluetooth;
}
public void unregisterAdapter(IBluetoothManagerCallback callback) {
if (callback == null) {
Slog.w(TAG, "Callback is null in unregisterAdapter");
return;
}
mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
synchronized (mCallbacks) {
mCallbacks.unregister(callback);
}
}
public void registerStateChangeCallback(IBluetoothStateChangeCallback callback) {
mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
if (callback == null) {
Slog.w(TAG, "registerStateChangeCallback: Callback is null!");
return;
}
Message msg = mHandler.obtainMessage(MESSAGE_REGISTER_STATE_CHANGE_CALLBACK);
msg.obj = callback;
mHandler.sendMessage(msg);
}
public void unregisterStateChangeCallback(IBluetoothStateChangeCallback callback) {
mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
if (callback == null) {
Slog.w(TAG, "unregisterStateChangeCallback: Callback is null!");
return;
}
Message msg = mHandler.obtainMessage(MESSAGE_UNREGISTER_STATE_CHANGE_CALLBACK);
msg.obj = callback;
mHandler.sendMessage(msg);
}
public boolean isEnabled() {
return getState() == BluetoothAdapter.STATE_ON;
}
public int getState() {
if ((Binder.getCallingUid() != Process.SYSTEM_UID) && (!checkIfCallerIsForegroundUser())) {
Slog.w(TAG, "getState(): report OFF for non-active and non system user");
return BluetoothAdapter.STATE_OFF;
}
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
return mBluetooth.getState();
}
} catch (RemoteException e) {
Slog.e(TAG, "getState()", e);
} finally {
mBluetoothLock.readLock().unlock();
}
return BluetoothAdapter.STATE_OFF;
}
class ClientDeathRecipient implements IBinder.DeathRecipient {
private String mPackageName;
ClientDeathRecipient(String packageName) {
mPackageName = packageName;
}
public void binderDied() {
if (DBG) {
Slog.d(TAG, "Binder is dead - unregister " + mPackageName);
}
for (Map.Entry<IBinder, ClientDeathRecipient> entry : mBleApps.entrySet()) {
IBinder token = entry.getKey();
ClientDeathRecipient deathRec = entry.getValue();
if (deathRec.equals(this)) {
updateBleAppCount(token, false, mPackageName);
break;
}
}
}
public String getPackageName() {
return mPackageName;
}
}
@Override
public boolean isBleScanAlwaysAvailable() {
if (isAirplaneModeOn() && !mEnable) {
return false;
}
try {
return Settings.Global.getInt(mContentResolver,
Settings.Global.BLE_SCAN_ALWAYS_AVAILABLE) != 0;
} catch (SettingNotFoundException e) {
}
return false;
}
@Override
public boolean isHearingAidProfileSupported() {
return mIsHearingAidProfileSupported;
}
@Override
/** @hide */
public java.util.List<String> getSystemConfigEnabledProfilesForPackage(String packageName) {
if (Binder.getCallingUid() != Process.BLUETOOTH_UID) {
Slog.w(TAG, "getSystemConfigEnabledProfilesForPackage(): not allowed for non-bluetooth");
return null;
}
SystemConfig systemConfig = SystemConfig.getInstance();
if (systemConfig == null) {
return null;
}
android.util.ArrayMap<String, Boolean> componentEnabledStates =
systemConfig.getComponentsEnabledStates(packageName);
if (componentEnabledStates == null) {
return null;
}
ArrayList enabledProfiles = new ArrayList<String>();
for (Map.Entry<String, Boolean> entry : componentEnabledStates.entrySet()) {
if (entry.getValue()) {
enabledProfiles.add(entry.getKey());
}
}
return enabledProfiles;
}
// Monitor change of BLE scan only mode settings.
private void registerForBleScanModeChange() {
ContentObserver contentObserver = new ContentObserver(null) {
@Override
public void onChange(boolean selfChange) {
if (isBleScanAlwaysAvailable()) {
// Nothing to do
return;
}
// BLE scan is not available.
disableBleScanMode();
clearBleApps();
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
addActiveLog(BluetoothProtoEnums.ENABLE_DISABLE_REASON_APPLICATION_REQUEST,
mContext.getPackageName(), false);
mBluetooth.onBrEdrDown();
}
} catch (RemoteException e) {
Slog.e(TAG, "error when disabling bluetooth", e);
} finally {
mBluetoothLock.readLock().unlock();
}
}
};
mContentResolver.registerContentObserver(
Settings.Global.getUriFor(Settings.Global.BLE_SCAN_ALWAYS_AVAILABLE), false,
contentObserver);
}
// Disable ble scan only mode.
private void disableBleScanMode() {
try {
mBluetoothLock.writeLock().lock();
if (mBluetooth != null && (mBluetooth.getState() != BluetoothAdapter.STATE_ON)) {
if (DBG) {
Slog.d(TAG, "Reseting the mEnable flag for clean disable");
}
mEnable = false;
}
} catch (RemoteException e) {
Slog.e(TAG, "getState()", e);
} finally {
mBluetoothLock.writeLock().unlock();
}
}
private int updateBleAppCount(IBinder token, boolean enable, String packageName) {
ClientDeathRecipient r = mBleApps.get(token);
if (r == null && enable) {
ClientDeathRecipient deathRec = new ClientDeathRecipient(packageName);
try {
token.linkToDeath(deathRec, 0);
} catch (RemoteException ex) {
throw new IllegalArgumentException("BLE app (" + packageName + ") already dead!");
}
mBleApps.put(token, deathRec);
if (DBG) {
Slog.d(TAG, "Registered for death of " + packageName);
}
} else if (!enable && r != null) {
// Unregister death recipient as the app goes away.
token.unlinkToDeath(r, 0);
mBleApps.remove(token);
if (DBG) {
Slog.d(TAG, "Unregistered for death of " + packageName);
}
}
int appCount = mBleApps.size();
if (DBG) {
Slog.d(TAG, appCount + " registered Ble Apps");
}
return appCount;
}
private boolean checkBluetoothPermissions(String packageName, boolean requireForeground) {
if (isBluetoothDisallowed()) {
if (DBG) {
Slog.d(TAG, "checkBluetoothPermissions: bluetooth disallowed");
}
return false;
}
// Check if packageName belongs to callingUid
final int callingUid = Binder.getCallingUid();
final boolean isCallerSystem = UserHandle.getAppId(callingUid) == Process.SYSTEM_UID;
if (!isCallerSystem) {
checkPackage(callingUid, packageName);
if (requireForeground && !checkIfCallerIsForegroundUser()) {
Slog.w(TAG, "Not allowed for non-active and non system user");
return false;
}
mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
"Need BLUETOOTH ADMIN permission");
}
return true;
}
public boolean enableBle(String packageName, IBinder token) throws RemoteException {
if (!checkBluetoothPermissions(packageName, false)) {
if (DBG) {
Slog.d(TAG, "enableBle(): bluetooth disallowed");
}
return false;
}
if (DBG) {
Slog.d(TAG, "enableBle(" + packageName + "): mBluetooth =" + mBluetooth
+ " mBinding = " + mBinding + " mState = "
+ BluetoothAdapter.nameForState(mState));
}
updateBleAppCount(token, true, packageName);
if (mState == BluetoothAdapter.STATE_ON
|| mState == BluetoothAdapter.STATE_BLE_ON
|| mState == BluetoothAdapter.STATE_TURNING_ON
|| mState == BluetoothAdapter.STATE_TURNING_OFF) {
Log.d(TAG, "enableBLE(): Bluetooth already enabled");
return true;
}
synchronized (mReceiver) {
// waive WRITE_SECURE_SETTINGS permission check
sendEnableMsg(false,
BluetoothProtoEnums.ENABLE_DISABLE_REASON_APPLICATION_REQUEST, packageName);
}
return true;
}
public boolean disableBle(String packageName, IBinder token) throws RemoteException {
if (!checkBluetoothPermissions(packageName, false)) {
if (DBG) {
Slog.d(TAG, "disableBLE(): bluetooth disallowed");
}
return false;
}
if (DBG) {
Slog.d(TAG, "disableBle(" + packageName + "): mBluetooth =" + mBluetooth
+ " mBinding = " + mBinding + " mState = "
+ BluetoothAdapter.nameForState(mState));
}
if (mState == BluetoothAdapter.STATE_OFF) {
Slog.d(TAG, "disableBLE(): Already disabled");
return false;
}
updateBleAppCount(token, false, packageName);
if (mState == BluetoothAdapter.STATE_BLE_ON && !isBleAppPresent()) {
if (mEnable) {
disableBleScanMode();
}
if (!mEnableExternal) {
addActiveLog(BluetoothProtoEnums.ENABLE_DISABLE_REASON_APPLICATION_REQUEST,
packageName, false);
sendBrEdrDownCallback();
}
}
return true;
}
// Clear all apps using BLE scan only mode.
private void clearBleApps() {
mBleApps.clear();
}
/** @hide */
public boolean isBleAppPresent() {
if (DBG) {
Slog.d(TAG, "isBleAppPresent() count: " + mBleApps.size());
}
return mBleApps.size() > 0;
}
/**
* Call IBluetooth.onLeServiceUp() to continue if Bluetooth should be on.
*/
private void continueFromBleOnState() {
if (DBG) {
Slog.d(TAG, "continueFromBleOnState()");
}
try {
mBluetoothLock.readLock().lock();
if (mBluetooth == null) {
Slog.e(TAG, "onBluetoothServiceUp: mBluetooth is null!");
return;
}
if (!mEnableExternal && !isBleAppPresent() && isAirplaneModeOn()) {
// Airplane mode is turned on while enabling BLE only mode, disable
// BLE now.
disableBleScanMode();
sendBrEdrDownCallback();
return;
}
if (isBluetoothPersistedStateOnBluetooth() || !isBleAppPresent()) {
// This triggers transition to STATE_ON
mBluetooth.onLeServiceUp();
persistBluetoothSetting(BLUETOOTH_ON_BLUETOOTH);
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call onServiceUp", e);
} finally {
mBluetoothLock.readLock().unlock();
}
}
/**
* Inform BluetoothAdapter instances that BREDR part is down
* and turn off all service and stack if no LE app needs it
*/
private void sendBrEdrDownCallback() {
if (DBG) {
Slog.d(TAG, "Calling sendBrEdrDownCallback callbacks");
}
if (mBluetooth == null) {
Slog.w(TAG, "Bluetooth handle is null");
return;
}
if (isBleAppPresent()) {
// Need to stay at BLE ON. Disconnect all Gatt connections
try {
mBluetoothGatt.unregAll();
} catch (RemoteException e) {
Slog.e(TAG, "Unable to disconnect all apps.", e);
}
} else {
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
mBluetooth.onBrEdrDown();
}
} catch (RemoteException e) {
Slog.e(TAG, "Call to onBrEdrDown() failed.", e);
} finally {
mBluetoothLock.readLock().unlock();
}
}
}
public boolean enableNoAutoConnect(String packageName) {
if (!checkBluetoothPermissions(packageName, false)) {
if (DBG) {
Slog.d(TAG, "enableNoAutoConnect(): not enabling - bluetooth disallowed");
}
return false;
}
if (DBG) {
Slog.d(TAG, "enableNoAutoConnect(): mBluetooth =" + mBluetooth + " mBinding = "
+ mBinding);
}
int callingAppId = UserHandle.getAppId(Binder.getCallingUid());
if (callingAppId != Process.NFC_UID) {
throw new SecurityException("no permission to enable Bluetooth quietly");
}
synchronized (mReceiver) {
mQuietEnableExternal = true;
mEnableExternal = true;
sendEnableMsg(true,
BluetoothProtoEnums.ENABLE_DISABLE_REASON_APPLICATION_REQUEST, packageName);
}
return true;
}
public boolean enable(String packageName) throws RemoteException {
if (!checkBluetoothPermissions(packageName, true)) {
if (DBG) {
Slog.d(TAG, "enable(): not enabling - bluetooth disallowed");
}
return false;
}
final int callingUid = Binder.getCallingUid();
final boolean callerSystem = UserHandle.getAppId(callingUid) == Process.SYSTEM_UID;
if (!callerSystem && !isEnabled() && mWirelessConsentRequired
&& startConsentUiIfNeeded(packageName,
callingUid, BluetoothAdapter.ACTION_REQUEST_ENABLE)) {
return false;
}
if (DBG) {
Slog.d(TAG, "enable(" + packageName + "): mBluetooth =" + mBluetooth + " mBinding = "
+ mBinding + " mState = " + BluetoothAdapter.nameForState(mState));
}
synchronized (mReceiver) {
mQuietEnableExternal = false;
mEnableExternal = true;
// waive WRITE_SECURE_SETTINGS permission check
sendEnableMsg(false,
BluetoothProtoEnums.ENABLE_DISABLE_REASON_APPLICATION_REQUEST, packageName);
}
if (DBG) {
Slog.d(TAG, "enable returning");
}
return true;
}
public boolean disable(String packageName, boolean persist) throws RemoteException {
if (!checkBluetoothPermissions(packageName, true)) {
if (DBG) {
Slog.d(TAG, "disable(): not disabling - bluetooth disallowed");
}
return false;
}
final int callingUid = Binder.getCallingUid();
final boolean callerSystem = UserHandle.getAppId(callingUid) == Process.SYSTEM_UID;
if (!callerSystem && isEnabled() && mWirelessConsentRequired
&& startConsentUiIfNeeded(packageName,
callingUid, BluetoothAdapter.ACTION_REQUEST_DISABLE)) {
return false;
}
if (DBG) {
Slog.d(TAG, "disable(): mBluetooth = " + mBluetooth + " mBinding = " + mBinding);
}
synchronized (mReceiver) {
if (!isBluetoothPersistedStateOnAirplane()) {
if (persist) {
persistBluetoothSetting(BLUETOOTH_OFF);
}
mEnableExternal = false;
}
sendDisableMsg(BluetoothProtoEnums.ENABLE_DISABLE_REASON_APPLICATION_REQUEST,
packageName);
}
return true;
}
private boolean startConsentUiIfNeeded(String packageName,
int callingUid, String intentAction) throws RemoteException {
if (checkBluetoothPermissionWhenWirelessConsentRequired()) {
return false;
}
try {
// Validate the package only if we are going to use it
ApplicationInfo applicationInfo = mContext.getPackageManager()
.getApplicationInfoAsUser(packageName,
PackageManager.MATCH_DEBUG_TRIAGED_MISSING,
UserHandle.getUserId(callingUid));
if (applicationInfo.uid != callingUid) {
throw new SecurityException("Package " + packageName
+ " not in uid " + callingUid);
}
Intent intent = new Intent(intentAction);
intent.putExtra(Intent.EXTRA_PACKAGE_NAME, packageName);
intent.setFlags(
Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
try {
mContext.startActivity(intent);
} catch (ActivityNotFoundException e) {
// Shouldn't happen
Slog.e(TAG, "Intent to handle action " + intentAction + " missing");
return false;
}
return true;
} catch (PackageManager.NameNotFoundException e) {
throw new RemoteException(e.getMessage());
}
}
/**
* Check if AppOpsManager is available and the packageName belongs to uid
*
* A null package belongs to any uid
*/
private void checkPackage(int uid, String packageName) {
if (mAppOps == null) {
Slog.w(TAG, "checkPackage(): called before system boot up, uid "
+ uid + ", packageName " + packageName);
throw new IllegalStateException("System has not boot yet");
}
if (packageName == null) {
Slog.w(TAG, "checkPackage(): called with null packageName from " + uid);
return;
}
try {
mAppOps.checkPackage(uid, packageName);
} catch (SecurityException e) {
Slog.w(TAG, "checkPackage(): " + packageName + " does not belong to uid " + uid);
throw new SecurityException(e.getMessage());
}
}
/**
* Check if the caller must still pass permission check or if the caller is exempted
* from the consent UI via the MANAGE_BLUETOOTH_WHEN_WIRELESS_CONSENT_REQUIRED check.
*
* Commands from some callers may be exempted from triggering the consent UI when
* enabling bluetooth. This exemption is checked via the
* MANAGE_BLUETOOTH_WHEN_WIRELESS_CONSENT_REQUIRED and allows calls to skip
* the consent UI where it may otherwise be required.
*
* @hide
*/
private boolean checkBluetoothPermissionWhenWirelessConsentRequired() {
int result = mContext.checkCallingPermission(
android.Manifest.permission.MANAGE_BLUETOOTH_WHEN_WIRELESS_CONSENT_REQUIRED);
return result == PackageManager.PERMISSION_GRANTED;
}
public void unbindAndFinish() {
if (DBG) {
Slog.d(TAG, "unbindAndFinish(): " + mBluetooth + " mBinding = " + mBinding
+ " mUnbinding = " + mUnbinding);
}
try {
mBluetoothLock.writeLock().lock();
if (mUnbinding) {
return;
}
mUnbinding = true;
mHandler.removeMessages(MESSAGE_BLUETOOTH_STATE_CHANGE);
mHandler.removeMessages(MESSAGE_BIND_PROFILE_SERVICE);
if (mBluetooth != null) {
//Unregister callback object
try {
mBluetooth.unregisterCallback(mBluetoothCallback);
} catch (RemoteException re) {
Slog.e(TAG, "Unable to unregister BluetoothCallback", re);
}
mBluetoothBinder = null;
mBluetooth = null;
mContext.unbindService(mConnection);
mUnbinding = false;
mBinding = false;
} else {
mUnbinding = false;
}
mBluetoothGatt = null;
} finally {
mBluetoothLock.writeLock().unlock();
}
}
public IBluetoothGatt getBluetoothGatt() {
// sync protection
return mBluetoothGatt;
}
@Override
public boolean bindBluetoothProfileService(int bluetoothProfile,
IBluetoothProfileServiceConnection proxy) {
if (!mEnable) {
if (DBG) {
Slog.d(TAG, "Trying to bind to profile: " + bluetoothProfile
+ ", while Bluetooth was disabled");
}
return false;
}
synchronized (mProfileServices) {
ProfileServiceConnections psc = mProfileServices.get(new Integer(bluetoothProfile));
if (psc == null) {
if (DBG) {
Slog.d(TAG, "Creating new ProfileServiceConnections object for" + " profile: "
+ bluetoothProfile);
}
if (bluetoothProfile != BluetoothProfile.HEADSET) {
return false;
}
Intent intent = new Intent(IBluetoothHeadset.class.getName());
psc = new ProfileServiceConnections(intent);
if (!psc.bindService()) {
return false;
}
mProfileServices.put(new Integer(bluetoothProfile), psc);
}
}
// Introducing a delay to give the client app time to prepare
Message addProxyMsg = mHandler.obtainMessage(MESSAGE_ADD_PROXY_DELAYED);
addProxyMsg.arg1 = bluetoothProfile;
addProxyMsg.obj = proxy;
mHandler.sendMessageDelayed(addProxyMsg, ADD_PROXY_DELAY_MS);
return true;
}
@Override
public void unbindBluetoothProfileService(int bluetoothProfile,
IBluetoothProfileServiceConnection proxy) {
synchronized (mProfileServices) {
Integer profile = new Integer(bluetoothProfile);
ProfileServiceConnections psc = mProfileServices.get(profile);
if (psc == null) {
return;
}
psc.removeProxy(proxy);
if (psc.isEmpty()) {
// All prxoies are disconnected, unbind with the service.
try {
mContext.unbindService(psc);
} catch (IllegalArgumentException e) {
Slog.e(TAG, "Unable to unbind service with intent: " + psc.mIntent, e);
}
mProfileServices.remove(profile);
}
}
}
private void unbindAllBluetoothProfileServices() {
synchronized (mProfileServices) {
for (Integer i : mProfileServices.keySet()) {
ProfileServiceConnections psc = mProfileServices.get(i);
try {
mContext.unbindService(psc);
} catch (IllegalArgumentException e) {
Slog.e(TAG, "Unable to unbind service with intent: " + psc.mIntent, e);
}
psc.removeAllProxies();
}
mProfileServices.clear();
}
}
/**
* Send enable message and set adapter name and address. Called when the boot phase becomes
* PHASE_SYSTEM_SERVICES_READY.
*/
public void handleOnBootPhase() {
if (DBG) {
Slog.d(TAG, "Bluetooth boot completed");
}
mAppOps = mContext.getSystemService(AppOpsManager.class);
UserManagerInternal userManagerInternal =
LocalServices.getService(UserManagerInternal.class);
userManagerInternal.addUserRestrictionsListener(mUserRestrictionsListener);
final boolean isBluetoothDisallowed = isBluetoothDisallowed();
if (isBluetoothDisallowed) {
return;
}
final boolean isSafeMode = mContext.getPackageManager().isSafeMode();
if (mEnableExternal && isBluetoothPersistedStateOnBluetooth() && !isSafeMode) {
if (DBG) {
Slog.d(TAG, "Auto-enabling Bluetooth.");
}
sendEnableMsg(mQuietEnableExternal,
BluetoothProtoEnums.ENABLE_DISABLE_REASON_SYSTEM_BOOT,
mContext.getPackageName());
} else if (!isNameAndAddressSet()) {
if (DBG) {
Slog.d(TAG, "Getting adapter name and address");
}
Message getMsg = mHandler.obtainMessage(MESSAGE_GET_NAME_AND_ADDRESS);
mHandler.sendMessage(getMsg);
}
if (mBluetoothAirplaneModeListener != null) {
mBluetoothAirplaneModeListener.start(
new BluetoothAirplaneModeListener.AirplaneModeHelper(mContext));
}
}
/**
* Called when switching to a different foreground user.
*/
public void handleOnSwitchUser(int userHandle) {
if (DBG) {
Slog.d(TAG, "User " + userHandle + " switched");
}
mHandler.obtainMessage(MESSAGE_USER_SWITCHED, userHandle, 0).sendToTarget();
}
/**
* Called when user is unlocked.
*/
public void handleOnUnlockUser(int userHandle) {
if (DBG) {
Slog.d(TAG, "User " + userHandle + " unlocked");
}
mHandler.obtainMessage(MESSAGE_USER_UNLOCKED, userHandle, 0).sendToTarget();
}
/**
* This class manages the clients connected to a given ProfileService
* and maintains the connection with that service.
*/
private final class ProfileServiceConnections
implements ServiceConnection, IBinder.DeathRecipient {
final RemoteCallbackList<IBluetoothProfileServiceConnection> mProxies =
new RemoteCallbackList<IBluetoothProfileServiceConnection>();
IBinder mService;
ComponentName mClassName;
Intent mIntent;
boolean mInvokingProxyCallbacks = false;
ProfileServiceConnections(Intent intent) {
mService = null;
mClassName = null;
mIntent = intent;
}
private boolean bindService() {
int state = BluetoothAdapter.STATE_OFF;
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
state = mBluetooth.getState();
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call getState", e);
return false;
} finally {
mBluetoothLock.readLock().unlock();
}
if (!mEnable || state != BluetoothAdapter.STATE_ON) {
if (DBG) {
Slog.d(TAG, "Unable to bindService while Bluetooth is disabled");
}
return false;
}
if (mIntent != null && mService == null && doBind(mIntent, this, 0,
UserHandle.CURRENT_OR_SELF)) {
Message msg = mHandler.obtainMessage(MESSAGE_BIND_PROFILE_SERVICE);
msg.obj = this;
mHandler.sendMessageDelayed(msg, TIMEOUT_BIND_MS);
return true;
}
Slog.w(TAG, "Unable to bind with intent: " + mIntent);
return false;
}
private void addProxy(IBluetoothProfileServiceConnection proxy) {
mProxies.register(proxy);
if (mService != null) {
try {
proxy.onServiceConnected(mClassName, mService);
} catch (RemoteException e) {
Slog.e(TAG, "Unable to connect to proxy", e);
}
} else {
if (!mHandler.hasMessages(MESSAGE_BIND_PROFILE_SERVICE, this)) {
Message msg = mHandler.obtainMessage(MESSAGE_BIND_PROFILE_SERVICE);
msg.obj = this;
mHandler.sendMessage(msg);
}
}
}
private void removeProxy(IBluetoothProfileServiceConnection proxy) {
if (proxy != null) {
if (mProxies.unregister(proxy)) {
try {
proxy.onServiceDisconnected(mClassName);
} catch (RemoteException e) {
Slog.e(TAG, "Unable to disconnect proxy", e);
}
}
} else {
Slog.w(TAG, "Trying to remove a null proxy");
}
}
private void removeAllProxies() {
onServiceDisconnected(mClassName);
mProxies.kill();
}
private boolean isEmpty() {
return mProxies.getRegisteredCallbackCount() == 0;
}
@Override
public void onServiceConnected(ComponentName className, IBinder service) {
// remove timeout message
mHandler.removeMessages(MESSAGE_BIND_PROFILE_SERVICE, this);
mService = service;
mClassName = className;
try {
mService.linkToDeath(this, 0);
} catch (RemoteException e) {
Slog.e(TAG, "Unable to linkToDeath", e);
}
if (mInvokingProxyCallbacks) {
Slog.e(TAG, "Proxy callbacks already in progress.");
return;
}
mInvokingProxyCallbacks = true;
final int n = mProxies.beginBroadcast();
try {
for (int i = 0; i < n; i++) {
try {
mProxies.getBroadcastItem(i).onServiceConnected(className, service);
} catch (RemoteException e) {
Slog.e(TAG, "Unable to connect to proxy", e);
}
}
} finally {
mProxies.finishBroadcast();
mInvokingProxyCallbacks = false;
}
}
@Override
public void onServiceDisconnected(ComponentName className) {
if (mService == null) {
return;
}
try {
mService.unlinkToDeath(this, 0);
} catch (NoSuchElementException e) {
Log.e(TAG, "error unlinking to death", e);
}
mService = null;
mClassName = null;
if (mInvokingProxyCallbacks) {
Slog.e(TAG, "Proxy callbacks already in progress.");
return;
}
mInvokingProxyCallbacks = true;
final int n = mProxies.beginBroadcast();
try {
for (int i = 0; i < n; i++) {
try {
mProxies.getBroadcastItem(i).onServiceDisconnected(className);
} catch (RemoteException e) {
Slog.e(TAG, "Unable to disconnect from proxy", e);
}
}
} finally {
mProxies.finishBroadcast();
mInvokingProxyCallbacks = false;
}
}
@Override
public void binderDied() {
if (DBG) {
Slog.w(TAG, "Profile service for profile: " + mClassName + " died.");
}
onServiceDisconnected(mClassName);
// Trigger rebind
Message msg = mHandler.obtainMessage(MESSAGE_BIND_PROFILE_SERVICE);
msg.obj = this;
mHandler.sendMessageDelayed(msg, TIMEOUT_BIND_MS);
}
}
private void sendBluetoothStateCallback(boolean isUp) {
try {
int n = mStateChangeCallbacks.beginBroadcast();
if (DBG) {
Slog.d(TAG, "Broadcasting onBluetoothStateChange(" + isUp + ") to " + n
+ " receivers.");
}
for (int i = 0; i < n; i++) {
try {
mStateChangeCallbacks.getBroadcastItem(i).onBluetoothStateChange(isUp);
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call onBluetoothStateChange() on callback #" + i, e);
}
}
} finally {
mStateChangeCallbacks.finishBroadcast();
}
}
/**
* Inform BluetoothAdapter instances that Adapter service is up
*/
private void sendBluetoothServiceUpCallback() {
synchronized (mCallbacks) {
try {
int n = mCallbacks.beginBroadcast();
Slog.d(TAG, "Broadcasting onBluetoothServiceUp() to " + n + " receivers.");
for (int i = 0; i < n; i++) {
try {
mCallbacks.getBroadcastItem(i).onBluetoothServiceUp(mBluetooth);
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call onBluetoothServiceUp() on callback #" + i, e);
}
}
} finally {
mCallbacks.finishBroadcast();
}
}
}
/**
* Inform BluetoothAdapter instances that Adapter service is down
*/
private void sendBluetoothServiceDownCallback() {
synchronized (mCallbacks) {
try {
int n = mCallbacks.beginBroadcast();
Slog.d(TAG, "Broadcasting onBluetoothServiceDown() to " + n + " receivers.");
for (int i = 0; i < n; i++) {
try {
mCallbacks.getBroadcastItem(i).onBluetoothServiceDown();
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call onBluetoothServiceDown() on callback #" + i, e);
}
}
} finally {
mCallbacks.finishBroadcast();
}
}
}
public String getAddress() {
mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
if ((Binder.getCallingUid() != Process.SYSTEM_UID) && (!checkIfCallerIsForegroundUser())) {
Slog.w(TAG, "getAddress(): not allowed for non-active and non system user");
return null;
}
if (mContext.checkCallingOrSelfPermission(Manifest.permission.LOCAL_MAC_ADDRESS)
!= PackageManager.PERMISSION_GRANTED) {
return BluetoothAdapter.DEFAULT_MAC_ADDRESS;
}
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
return mBluetooth.getAddress();
}
} catch (RemoteException e) {
Slog.e(TAG,
"getAddress(): Unable to retrieve address remotely. Returning cached address",
e);
} finally {
mBluetoothLock.readLock().unlock();
}
// mAddress is accessed from outside.
// It is alright without a lock. Here, bluetooth is off, no other thread is
// changing mAddress
return mAddress;
}
public String getName() {
mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
if ((Binder.getCallingUid() != Process.SYSTEM_UID) && (!checkIfCallerIsForegroundUser())) {
Slog.w(TAG, "getName(): not allowed for non-active and non system user");
return null;
}
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
return mBluetooth.getName();
}
} catch (RemoteException e) {
Slog.e(TAG, "getName(): Unable to retrieve name remotely. Returning cached name", e);
} finally {
mBluetoothLock.readLock().unlock();
}
// mName is accessed from outside.
// It alright without a lock. Here, bluetooth is off, no other thread is
// changing mName
return mName;
}
private class BluetoothServiceConnection implements ServiceConnection {
public void onServiceConnected(ComponentName componentName, IBinder service) {
String name = componentName.getClassName();
if (DBG) {
Slog.d(TAG, "BluetoothServiceConnection: " + name);
}
Message msg = mHandler.obtainMessage(MESSAGE_BLUETOOTH_SERVICE_CONNECTED);
if (name.equals("com.android.bluetooth.btservice.AdapterService")) {
msg.arg1 = SERVICE_IBLUETOOTH;
} else if (name.equals("com.android.bluetooth.gatt.GattService")) {
msg.arg1 = SERVICE_IBLUETOOTHGATT;
} else {
Slog.e(TAG, "Unknown service connected: " + name);
return;
}
msg.obj = service;
mHandler.sendMessage(msg);
}
public void onServiceDisconnected(ComponentName componentName) {
// Called if we unexpectedly disconnect.
String name = componentName.getClassName();
if (DBG) {
Slog.d(TAG, "BluetoothServiceConnection, disconnected: " + name);
}
Message msg = mHandler.obtainMessage(MESSAGE_BLUETOOTH_SERVICE_DISCONNECTED);
if (name.equals("com.android.bluetooth.btservice.AdapterService")) {
msg.arg1 = SERVICE_IBLUETOOTH;
} else if (name.equals("com.android.bluetooth.gatt.GattService")) {
msg.arg1 = SERVICE_IBLUETOOTHGATT;
} else {
Slog.e(TAG, "Unknown service disconnected: " + name);
return;
}
mHandler.sendMessage(msg);
}
}
private BluetoothServiceConnection mConnection = new BluetoothServiceConnection();
private class BluetoothHandler extends Handler {
boolean mGetNameAddressOnly = false;
BluetoothHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_GET_NAME_AND_ADDRESS:
if (DBG) {
Slog.d(TAG, "MESSAGE_GET_NAME_AND_ADDRESS");
}
try {
mBluetoothLock.writeLock().lock();
if ((mBluetooth == null) && (!mBinding)) {
if (DBG) {
Slog.d(TAG, "Binding to service to get name and address");
}
mGetNameAddressOnly = true;
Message timeoutMsg = mHandler.obtainMessage(MESSAGE_TIMEOUT_BIND);
mHandler.sendMessageDelayed(timeoutMsg, TIMEOUT_BIND_MS);
Intent i = new Intent(IBluetooth.class.getName());
if (!doBind(i, mConnection,
Context.BIND_AUTO_CREATE | Context.BIND_IMPORTANT,
UserHandle.CURRENT)) {
mHandler.removeMessages(MESSAGE_TIMEOUT_BIND);
} else {
mBinding = true;
}
} else if (mBluetooth != null) {
try {
storeNameAndAddress(mBluetooth.getName(), mBluetooth.getAddress());
} catch (RemoteException re) {
Slog.e(TAG, "Unable to grab names", re);
}
if (mGetNameAddressOnly && !mEnable) {
unbindAndFinish();
}
mGetNameAddressOnly = false;
}
} finally {
mBluetoothLock.writeLock().unlock();
}
break;
case MESSAGE_ENABLE:
int quietEnable = msg.arg1;
if (mHandler.hasMessages(MESSAGE_HANDLE_DISABLE_DELAYED)
|| mHandler.hasMessages(MESSAGE_HANDLE_ENABLE_DELAYED)) {
// We are handling enable or disable right now, wait for it.
mHandler.sendMessageDelayed(mHandler.obtainMessage(MESSAGE_ENABLE,
quietEnable, 0), ENABLE_DISABLE_DELAY_MS);
break;
}
if (DBG) {
Slog.d(TAG, "MESSAGE_ENABLE(" + quietEnable + "): mBluetooth = "
+ mBluetooth);
}
mHandler.removeMessages(MESSAGE_RESTART_BLUETOOTH_SERVICE);
mEnable = true;
// Use service interface to get the exact state
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
int state = mBluetooth.getState();
if (state == BluetoothAdapter.STATE_BLE_ON) {
Slog.w(TAG, "BT Enable in BLE_ON State, going to ON");
mBluetooth.onLeServiceUp();
persistBluetoothSetting(BLUETOOTH_ON_BLUETOOTH);
break;
}
}
} catch (RemoteException e) {
Slog.e(TAG, "", e);
} finally {
mBluetoothLock.readLock().unlock();
}
mQuietEnable = (quietEnable == 1);
if (mBluetooth == null) {
handleEnable(mQuietEnable);
} else {
//
// We need to wait until transitioned to STATE_OFF and
// the previous Bluetooth process has exited. The
// waiting period has three components:
// (a) Wait until the local state is STATE_OFF. This
// is accomplished by sending delay a message
// MESSAGE_HANDLE_ENABLE_DELAYED
// (b) Wait until the STATE_OFF state is updated to
// all components.
// (c) Wait until the Bluetooth process exits, and
// ActivityManager detects it.
// The waiting for (b) and (c) is accomplished by
// delaying the MESSAGE_RESTART_BLUETOOTH_SERVICE
// message. The delay time is backed off if Bluetooth
// continuously failed to turn on itself.
//
mWaitForEnableRetry = 0;
Message enableDelayedMsg =
mHandler.obtainMessage(MESSAGE_HANDLE_ENABLE_DELAYED);
mHandler.sendMessageDelayed(enableDelayedMsg, ENABLE_DISABLE_DELAY_MS);
}
break;
case MESSAGE_DISABLE:
if (mHandler.hasMessages(MESSAGE_HANDLE_DISABLE_DELAYED) || mBinding
|| mHandler.hasMessages(MESSAGE_HANDLE_ENABLE_DELAYED)) {
// We are handling enable or disable right now, wait for it.
mHandler.sendMessageDelayed(mHandler.obtainMessage(MESSAGE_DISABLE),
ENABLE_DISABLE_DELAY_MS);
break;
}
if (DBG) {
Slog.d(TAG, "MESSAGE_DISABLE: mBluetooth = " + mBluetooth
+ ", mBinding = " + mBinding);
}
mHandler.removeMessages(MESSAGE_RESTART_BLUETOOTH_SERVICE);
if (mEnable && mBluetooth != null) {
mWaitForDisableRetry = 0;
Message disableDelayedMsg =
mHandler.obtainMessage(MESSAGE_HANDLE_DISABLE_DELAYED, 0, 0);
mHandler.sendMessageDelayed(disableDelayedMsg, ENABLE_DISABLE_DELAY_MS);
} else {
mEnable = false;
handleDisable();
}
break;
case MESSAGE_HANDLE_ENABLE_DELAYED: {
// The Bluetooth is turning off, wait for STATE_OFF
if (mState != BluetoothAdapter.STATE_OFF) {
if (mWaitForEnableRetry < MAX_WAIT_FOR_ENABLE_DISABLE_RETRIES) {
mWaitForEnableRetry++;
Message enableDelayedMsg =
mHandler.obtainMessage(MESSAGE_HANDLE_ENABLE_DELAYED);
mHandler.sendMessageDelayed(enableDelayedMsg, ENABLE_DISABLE_DELAY_MS);
break;
} else {
Slog.e(TAG, "Wait for STATE_OFF timeout");
}
}
// Either state is changed to STATE_OFF or reaches the maximum retry, we
// should move forward to the next step.
mWaitForEnableRetry = 0;
Message restartMsg =
mHandler.obtainMessage(MESSAGE_RESTART_BLUETOOTH_SERVICE);
mHandler.sendMessageDelayed(restartMsg, getServiceRestartMs());
Slog.d(TAG, "Handle enable is finished");
break;
}
case MESSAGE_HANDLE_DISABLE_DELAYED: {
boolean disabling = (msg.arg1 == 1);
Slog.d(TAG, "MESSAGE_HANDLE_DISABLE_DELAYED: disabling:" + disabling);
if (!disabling) {
// The Bluetooth is turning on, wait for STATE_ON
if (mState != BluetoothAdapter.STATE_ON) {
if (mWaitForDisableRetry < MAX_WAIT_FOR_ENABLE_DISABLE_RETRIES) {
mWaitForDisableRetry++;
Message disableDelayedMsg = mHandler.obtainMessage(
MESSAGE_HANDLE_DISABLE_DELAYED, 0, 0);
mHandler.sendMessageDelayed(disableDelayedMsg,
ENABLE_DISABLE_DELAY_MS);
break;
} else {
Slog.e(TAG, "Wait for STATE_ON timeout");
}
}
// Either state is changed to STATE_ON or reaches the maximum retry, we
// should move forward to the next step.
mWaitForDisableRetry = 0;
mEnable = false;
handleDisable();
// Wait for state exiting STATE_ON
Message disableDelayedMsg =
mHandler.obtainMessage(MESSAGE_HANDLE_DISABLE_DELAYED, 1, 0);
mHandler.sendMessageDelayed(disableDelayedMsg, ENABLE_DISABLE_DELAY_MS);
} else {
// The Bluetooth is turning off, wait for exiting STATE_ON
if (mState == BluetoothAdapter.STATE_ON) {
if (mWaitForDisableRetry < MAX_WAIT_FOR_ENABLE_DISABLE_RETRIES) {
mWaitForDisableRetry++;
Message disableDelayedMsg = mHandler.obtainMessage(
MESSAGE_HANDLE_DISABLE_DELAYED, 1, 0);
mHandler.sendMessageDelayed(disableDelayedMsg,
ENABLE_DISABLE_DELAY_MS);
break;
} else {
Slog.e(TAG, "Wait for exiting STATE_ON timeout");
}
}
// Either state is exited from STATE_ON or reaches the maximum retry, we
// should move forward to the next step.
Slog.d(TAG, "Handle disable is finished");
}
break;
}
case MESSAGE_RESTORE_USER_SETTING:
if ((msg.arg1 == RESTORE_SETTING_TO_OFF) && mEnable) {
if (DBG) {
Slog.d(TAG, "Restore Bluetooth state to disabled");
}
persistBluetoothSetting(BLUETOOTH_OFF);
mEnableExternal = false;
sendDisableMsg(
BluetoothProtoEnums.ENABLE_DISABLE_REASON_RESTORE_USER_SETTING,
mContext.getPackageName());
} else if ((msg.arg1 == RESTORE_SETTING_TO_ON) && !mEnable) {
if (DBG) {
Slog.d(TAG, "Restore Bluetooth state to enabled");
}
mQuietEnableExternal = false;
mEnableExternal = true;
// waive WRITE_SECURE_SETTINGS permission check
sendEnableMsg(false,
BluetoothProtoEnums.ENABLE_DISABLE_REASON_RESTORE_USER_SETTING,
mContext.getPackageName());
}
break;
case MESSAGE_REGISTER_STATE_CHANGE_CALLBACK: {
IBluetoothStateChangeCallback callback =
(IBluetoothStateChangeCallback) msg.obj;
mStateChangeCallbacks.register(callback);
break;
}
case MESSAGE_UNREGISTER_STATE_CHANGE_CALLBACK: {
IBluetoothStateChangeCallback callback =
(IBluetoothStateChangeCallback) msg.obj;
mStateChangeCallbacks.unregister(callback);
break;
}
case MESSAGE_ADD_PROXY_DELAYED: {
ProfileServiceConnections psc = mProfileServices.get(msg.arg1);
if (psc == null) {
break;
}
IBluetoothProfileServiceConnection proxy =
(IBluetoothProfileServiceConnection) msg.obj;
psc.addProxy(proxy);
break;
}
case MESSAGE_BIND_PROFILE_SERVICE: {
ProfileServiceConnections psc = (ProfileServiceConnections) msg.obj;
removeMessages(MESSAGE_BIND_PROFILE_SERVICE, msg.obj);
if (psc == null) {
break;
}
psc.bindService();
break;
}
case MESSAGE_BLUETOOTH_SERVICE_CONNECTED: {
if (DBG) {
Slog.d(TAG, "MESSAGE_BLUETOOTH_SERVICE_CONNECTED: " + msg.arg1);
}
IBinder service = (IBinder) msg.obj;
try {
mBluetoothLock.writeLock().lock();
if (msg.arg1 == SERVICE_IBLUETOOTHGATT) {
mBluetoothGatt =
IBluetoothGatt.Stub.asInterface(Binder.allowBlocking(service));
continueFromBleOnState();
break;
} // else must be SERVICE_IBLUETOOTH
//Remove timeout
mHandler.removeMessages(MESSAGE_TIMEOUT_BIND);
mBinding = false;
mBluetoothBinder = service;
mBluetooth = IBluetooth.Stub.asInterface(Binder.allowBlocking(service));
if (!isNameAndAddressSet()) {
Message getMsg = mHandler.obtainMessage(MESSAGE_GET_NAME_AND_ADDRESS);
mHandler.sendMessage(getMsg);
if (mGetNameAddressOnly) {
return;
}
}
//Register callback object
try {
mBluetooth.registerCallback(mBluetoothCallback);
} catch (RemoteException re) {
Slog.e(TAG, "Unable to register BluetoothCallback", re);
}
//Inform BluetoothAdapter instances that service is up
sendBluetoothServiceUpCallback();
//Do enable request
try {
if (!mBluetooth.enable(mQuietEnable)) {
Slog.e(TAG, "IBluetooth.enable() returned false");
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call enable()", e);
}
} finally {
mBluetoothLock.writeLock().unlock();
}
if (!mEnable) {
waitForState(Set.of(BluetoothAdapter.STATE_ON));
handleDisable();
waitForState(Set.of(BluetoothAdapter.STATE_OFF,
BluetoothAdapter.STATE_TURNING_ON,
BluetoothAdapter.STATE_TURNING_OFF,
BluetoothAdapter.STATE_BLE_TURNING_ON,
BluetoothAdapter.STATE_BLE_ON,
BluetoothAdapter.STATE_BLE_TURNING_OFF));
}
break;
}
case MESSAGE_BLUETOOTH_STATE_CHANGE: {
int prevState = msg.arg1;
int newState = msg.arg2;
if (DBG) {
Slog.d(TAG,
"MESSAGE_BLUETOOTH_STATE_CHANGE: " + BluetoothAdapter.nameForState(
prevState) + " > " + BluetoothAdapter.nameForState(
newState));
}
mState = newState;
bluetoothStateChangeHandler(prevState, newState);
// handle error state transition case from TURNING_ON to OFF
// unbind and rebind bluetooth service and enable bluetooth
if ((prevState == BluetoothAdapter.STATE_BLE_TURNING_ON) && (newState
== BluetoothAdapter.STATE_OFF) && (mBluetooth != null) && mEnable) {
recoverBluetoothServiceFromError(false);
}
if ((prevState == BluetoothAdapter.STATE_TURNING_ON) && (newState
== BluetoothAdapter.STATE_BLE_ON) && (mBluetooth != null) && mEnable) {
recoverBluetoothServiceFromError(true);
}
// If we tried to enable BT while BT was in the process of shutting down,
// wait for the BT process to fully tear down and then force a restart
// here. This is a bit of a hack (b/29363429).
if ((prevState == BluetoothAdapter.STATE_BLE_TURNING_OFF) && (newState
== BluetoothAdapter.STATE_OFF)) {
if (mEnable) {
Slog.d(TAG, "Entering STATE_OFF but mEnabled is true; restarting.");
waitForState(Set.of(BluetoothAdapter.STATE_OFF));
Message restartMsg =
mHandler.obtainMessage(MESSAGE_RESTART_BLUETOOTH_SERVICE);
mHandler.sendMessageDelayed(restartMsg, getServiceRestartMs());
}
}
if (newState == BluetoothAdapter.STATE_ON
|| newState == BluetoothAdapter.STATE_BLE_ON) {
// bluetooth is working, reset the counter
if (mErrorRecoveryRetryCounter != 0) {
Slog.w(TAG, "bluetooth is recovered from error");
mErrorRecoveryRetryCounter = 0;
}
}
break;
}
case MESSAGE_BLUETOOTH_SERVICE_DISCONNECTED: {
Slog.e(TAG, "MESSAGE_BLUETOOTH_SERVICE_DISCONNECTED(" + msg.arg1 + ")");
try {
mBluetoothLock.writeLock().lock();
if (msg.arg1 == SERVICE_IBLUETOOTH) {
// if service is unbinded already, do nothing and return
if (mBluetooth == null) {
break;
}
mBluetooth = null;
} else if (msg.arg1 == SERVICE_IBLUETOOTHGATT) {
mBluetoothGatt = null;
break;
} else {
Slog.e(TAG, "Unknown argument for service disconnect!");
break;
}
} finally {
mBluetoothLock.writeLock().unlock();
}
// log the unexpected crash
addCrashLog();
addActiveLog(BluetoothProtoEnums.ENABLE_DISABLE_REASON_CRASH,
mContext.getPackageName(), false);
if (mEnable) {
mEnable = false;
// Send a Bluetooth Restart message
Message restartMsg =
mHandler.obtainMessage(MESSAGE_RESTART_BLUETOOTH_SERVICE);
mHandler.sendMessageDelayed(restartMsg, getServiceRestartMs());
}
sendBluetoothServiceDownCallback();
// Send BT state broadcast to update
// the BT icon correctly
if ((mState == BluetoothAdapter.STATE_TURNING_ON) || (mState
== BluetoothAdapter.STATE_ON)) {
bluetoothStateChangeHandler(BluetoothAdapter.STATE_ON,
BluetoothAdapter.STATE_TURNING_OFF);
mState = BluetoothAdapter.STATE_TURNING_OFF;
}
if (mState == BluetoothAdapter.STATE_TURNING_OFF) {
bluetoothStateChangeHandler(BluetoothAdapter.STATE_TURNING_OFF,
BluetoothAdapter.STATE_OFF);
}
mHandler.removeMessages(MESSAGE_BLUETOOTH_STATE_CHANGE);
mState = BluetoothAdapter.STATE_OFF;
break;
}
case MESSAGE_RESTART_BLUETOOTH_SERVICE: {
mErrorRecoveryRetryCounter++;
Slog.d(TAG, "MESSAGE_RESTART_BLUETOOTH_SERVICE: retry count="
+ mErrorRecoveryRetryCounter);
if (mErrorRecoveryRetryCounter < MAX_ERROR_RESTART_RETRIES) {
/* Enable without persisting the setting as
it doesnt change when IBluetooth
service restarts */
mEnable = true;
addActiveLog(BluetoothProtoEnums.ENABLE_DISABLE_REASON_RESTARTED,
mContext.getPackageName(), true);
handleEnable(mQuietEnable);
} else {
Slog.e(TAG, "Reach maximum retry to restart Bluetooth!");
}
break;
}
case MESSAGE_TIMEOUT_BIND: {
Slog.e(TAG, "MESSAGE_TIMEOUT_BIND");
mBluetoothLock.writeLock().lock();
mBinding = false;
mBluetoothLock.writeLock().unlock();
break;
}
case MESSAGE_TIMEOUT_UNBIND: {
Slog.e(TAG, "MESSAGE_TIMEOUT_UNBIND");
mBluetoothLock.writeLock().lock();
mUnbinding = false;
mBluetoothLock.writeLock().unlock();
break;
}
case MESSAGE_USER_SWITCHED: {
if (DBG) {
Slog.d(TAG, "MESSAGE_USER_SWITCHED");
}
mHandler.removeMessages(MESSAGE_USER_SWITCHED);
/* disable and enable BT when detect a user switch */
if (mBluetooth != null && isEnabled()) {
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
mBluetooth.unregisterCallback(mBluetoothCallback);
}
} catch (RemoteException re) {
Slog.e(TAG, "Unable to unregister", re);
} finally {
mBluetoothLock.readLock().unlock();
}
if (mState == BluetoothAdapter.STATE_TURNING_OFF) {
// MESSAGE_USER_SWITCHED happened right after MESSAGE_ENABLE
bluetoothStateChangeHandler(mState, BluetoothAdapter.STATE_OFF);
mState = BluetoothAdapter.STATE_OFF;
}
if (mState == BluetoothAdapter.STATE_OFF) {
bluetoothStateChangeHandler(mState, BluetoothAdapter.STATE_TURNING_ON);
mState = BluetoothAdapter.STATE_TURNING_ON;
}
waitForState(Set.of(BluetoothAdapter.STATE_ON));
if (mState == BluetoothAdapter.STATE_TURNING_ON) {
bluetoothStateChangeHandler(mState, BluetoothAdapter.STATE_ON);
}
unbindAllBluetoothProfileServices();
// disable
addActiveLog(BluetoothProtoEnums.ENABLE_DISABLE_REASON_USER_SWITCH,
mContext.getPackageName(), false);
handleDisable();
// Pbap service need receive STATE_TURNING_OFF intent to close
bluetoothStateChangeHandler(BluetoothAdapter.STATE_ON,
BluetoothAdapter.STATE_TURNING_OFF);
boolean didDisableTimeout =
!waitForState(Set.of(BluetoothAdapter.STATE_OFF));
bluetoothStateChangeHandler(BluetoothAdapter.STATE_TURNING_OFF,
BluetoothAdapter.STATE_OFF);
sendBluetoothServiceDownCallback();
try {
mBluetoothLock.writeLock().lock();
if (mBluetooth != null) {
mBluetooth = null;
// Unbind
mContext.unbindService(mConnection);
}
mBluetoothGatt = null;
} finally {
mBluetoothLock.writeLock().unlock();
}
//
// If disabling Bluetooth times out, wait for an
// additional amount of time to ensure the process is
// shut down completely before attempting to restart.
//
if (didDisableTimeout) {
SystemClock.sleep(3000);
} else {
SystemClock.sleep(100);
}
mHandler.removeMessages(MESSAGE_BLUETOOTH_STATE_CHANGE);
mState = BluetoothAdapter.STATE_OFF;
// enable
addActiveLog(BluetoothProtoEnums.ENABLE_DISABLE_REASON_USER_SWITCH,
mContext.getPackageName(), true);
// mEnable flag could have been reset on disableBLE. Reenable it.
mEnable = true;
handleEnable(mQuietEnable);
} else if (mBinding || mBluetooth != null) {
Message userMsg = mHandler.obtainMessage(MESSAGE_USER_SWITCHED);
userMsg.arg2 = 1 + msg.arg2;
// if user is switched when service is binding retry after a delay
mHandler.sendMessageDelayed(userMsg, USER_SWITCHED_TIME_MS);
if (DBG) {
Slog.d(TAG, "Retry MESSAGE_USER_SWITCHED " + userMsg.arg2);
}
}
break;
}
case MESSAGE_USER_UNLOCKED: {
if (DBG) {
Slog.d(TAG, "MESSAGE_USER_UNLOCKED");
}
mHandler.removeMessages(MESSAGE_USER_SWITCHED);
if (mEnable && !mBinding && (mBluetooth == null)) {
// We should be connected, but we gave up for some
// reason; maybe the Bluetooth service wasn't encryption
// aware, so try binding again.
if (DBG) {
Slog.d(TAG, "Enabled but not bound; retrying after unlock");
}
handleEnable(mQuietEnable);
}
}
}
}
}
private void handleEnable(boolean quietMode) {
mQuietEnable = quietMode;
try {
mBluetoothLock.writeLock().lock();
if ((mBluetooth == null) && (!mBinding)) {
Slog.d(TAG, "binding Bluetooth service");
//Start bind timeout and bind
Message timeoutMsg = mHandler.obtainMessage(MESSAGE_TIMEOUT_BIND);
mHandler.sendMessageDelayed(timeoutMsg, TIMEOUT_BIND_MS);
Intent i = new Intent(IBluetooth.class.getName());
if (!doBind(i, mConnection, Context.BIND_AUTO_CREATE | Context.BIND_IMPORTANT,
UserHandle.CURRENT)) {
mHandler.removeMessages(MESSAGE_TIMEOUT_BIND);
} else {
mBinding = true;
}
} else if (mBluetooth != null) {
//Enable bluetooth
try {
if (!mBluetooth.enable(mQuietEnable)) {
Slog.e(TAG, "IBluetooth.enable() returned false");
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call enable()", e);
}
}
} finally {
mBluetoothLock.writeLock().unlock();
}
}
boolean doBind(Intent intent, ServiceConnection conn, int flags, UserHandle user) {
ComponentName comp = intent.resolveSystemService(mContext.getPackageManager(), 0);
intent.setComponent(comp);
if (comp == null || !mContext.bindServiceAsUser(intent, conn, flags, user)) {
Slog.e(TAG, "Fail to bind to: " + intent);
return false;
}
return true;
}
private void handleDisable() {
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
if (DBG) {
Slog.d(TAG, "Sending off request.");
}
if (!mBluetooth.disable()) {
Slog.e(TAG, "IBluetooth.disable() returned false");
}
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to call disable()", e);
} finally {
mBluetoothLock.readLock().unlock();
}
}
private boolean checkIfCallerIsForegroundUser() {
int foregroundUser;
int callingUser = UserHandle.getCallingUserId();
int callingUid = Binder.getCallingUid();
long callingIdentity = Binder.clearCallingIdentity();
UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
UserInfo ui = um.getProfileParent(callingUser);
int parentUser = (ui != null) ? ui.id : UserHandle.USER_NULL;
int callingAppId = UserHandle.getAppId(callingUid);
boolean valid = false;
try {
foregroundUser = ActivityManager.getCurrentUser();
valid = (callingUser == foregroundUser) || parentUser == foregroundUser
|| callingAppId == Process.NFC_UID || callingAppId == mSystemUiUid;
if (DBG && !valid) {
Slog.d(TAG, "checkIfCallerIsForegroundUser: valid=" + valid + " callingUser="
+ callingUser + " parentUser=" + parentUser + " foregroundUser="
+ foregroundUser);
}
} finally {
Binder.restoreCallingIdentity(callingIdentity);
}
return valid;
}
private void sendBleStateChanged(int prevState, int newState) {
if (DBG) {
Slog.d(TAG,
"Sending BLE State Change: " + BluetoothAdapter.nameForState(prevState) + " > "
+ BluetoothAdapter.nameForState(newState));
}
// Send broadcast message to everyone else
Intent intent = new Intent(BluetoothAdapter.ACTION_BLE_STATE_CHANGED);
intent.putExtra(BluetoothAdapter.EXTRA_PREVIOUS_STATE, prevState);
intent.putExtra(BluetoothAdapter.EXTRA_STATE, newState);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL, BLUETOOTH_PERM);
}
private void bluetoothStateChangeHandler(int prevState, int newState) {
boolean isStandardBroadcast = true;
if (prevState == newState) { // No change. Nothing to do.
return;
}
// Notify all proxy objects first of adapter state change
if (newState == BluetoothAdapter.STATE_BLE_ON || newState == BluetoothAdapter.STATE_OFF) {
boolean intermediate_off = (prevState == BluetoothAdapter.STATE_TURNING_OFF
&& newState == BluetoothAdapter.STATE_BLE_ON);
if (newState == BluetoothAdapter.STATE_OFF) {
// If Bluetooth is off, send service down event to proxy objects, and unbind
if (DBG) {
Slog.d(TAG, "Bluetooth is complete send Service Down");
}
sendBluetoothServiceDownCallback();
unbindAndFinish();
sendBleStateChanged(prevState, newState);
// Don't broadcast as it has already been broadcast before
isStandardBroadcast = false;
} else if (!intermediate_off) {
// connect to GattService
if (DBG) {
Slog.d(TAG, "Bluetooth is in LE only mode");
}
if (mBluetoothGatt != null || !mContext.getPackageManager()
.hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
continueFromBleOnState();
} else {
if (DBG) {
Slog.d(TAG, "Binding Bluetooth GATT service");
}
Intent i = new Intent(IBluetoothGatt.class.getName());
doBind(i, mConnection, Context.BIND_AUTO_CREATE | Context.BIND_IMPORTANT,
UserHandle.CURRENT);
}
sendBleStateChanged(prevState, newState);
//Don't broadcase this as std intent
isStandardBroadcast = false;
} else if (intermediate_off) {
if (DBG) {
Slog.d(TAG, "Intermediate off, back to LE only mode");
}
// For LE only mode, broadcast as is
sendBleStateChanged(prevState, newState);
sendBluetoothStateCallback(false); // BT is OFF for general users
// Broadcast as STATE_OFF
newState = BluetoothAdapter.STATE_OFF;
sendBrEdrDownCallback();
}
} else if (newState == BluetoothAdapter.STATE_ON) {
boolean isUp = (newState == BluetoothAdapter.STATE_ON);
sendBluetoothStateCallback(isUp);
sendBleStateChanged(prevState, newState);
} else if (newState == BluetoothAdapter.STATE_BLE_TURNING_ON
|| newState == BluetoothAdapter.STATE_BLE_TURNING_OFF) {
sendBleStateChanged(prevState, newState);
isStandardBroadcast = false;
} else if (newState == BluetoothAdapter.STATE_TURNING_ON
|| newState == BluetoothAdapter.STATE_TURNING_OFF) {
sendBleStateChanged(prevState, newState);
}
if (isStandardBroadcast) {
if (prevState == BluetoothAdapter.STATE_BLE_ON) {
// Show prevState of BLE_ON as OFF to standard users
prevState = BluetoothAdapter.STATE_OFF;
}
Intent intent = new Intent(BluetoothAdapter.ACTION_STATE_CHANGED);
intent.putExtra(BluetoothAdapter.EXTRA_PREVIOUS_STATE, prevState);
intent.putExtra(BluetoothAdapter.EXTRA_STATE, newState);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL, BLUETOOTH_PERM);
}
}
private boolean waitForState(Set<Integer> states) {
int i = 0;
while (i < 10) {
try {
mBluetoothLock.readLock().lock();
if (mBluetooth == null) {
break;
}
if (states.contains(mBluetooth.getState())) {
return true;
}
} catch (RemoteException e) {
Slog.e(TAG, "getState()", e);
break;
} finally {
mBluetoothLock.readLock().unlock();
}
SystemClock.sleep(300);
i++;
}
Slog.e(TAG, "waitForState " + states + " time out");
return false;
}
private void sendDisableMsg(int reason, String packageName) {
mHandler.sendMessage(mHandler.obtainMessage(MESSAGE_DISABLE));
addActiveLog(reason, packageName, false);
}
private void sendEnableMsg(boolean quietMode, int reason, String packageName) {
mHandler.sendMessage(mHandler.obtainMessage(MESSAGE_ENABLE, quietMode ? 1 : 0, 0));
addActiveLog(reason, packageName, true);
mLastEnabledTime = SystemClock.elapsedRealtime();
}
private void addActiveLog(int reason, String packageName, boolean enable) {
synchronized (mActiveLogs) {
if (mActiveLogs.size() > ACTIVE_LOG_MAX_SIZE) {
mActiveLogs.remove();
}
mActiveLogs.add(
new ActiveLog(reason, packageName, enable, System.currentTimeMillis()));
}
int state = enable ? FrameworkStatsLog.BLUETOOTH_ENABLED_STATE_CHANGED__STATE__ENABLED :
FrameworkStatsLog.BLUETOOTH_ENABLED_STATE_CHANGED__STATE__DISABLED;
FrameworkStatsLog.write_non_chained(FrameworkStatsLog.BLUETOOTH_ENABLED_STATE_CHANGED,
Binder.getCallingUid(), null, state, reason, packageName);
}
private void addCrashLog() {
synchronized (mCrashTimestamps) {
if (mCrashTimestamps.size() == CRASH_LOG_MAX_SIZE) {
mCrashTimestamps.removeFirst();
}
mCrashTimestamps.add(System.currentTimeMillis());
mCrashes++;
}
}
private void recoverBluetoothServiceFromError(boolean clearBle) {
Slog.e(TAG, "recoverBluetoothServiceFromError");
try {
mBluetoothLock.readLock().lock();
if (mBluetooth != null) {
//Unregister callback object
mBluetooth.unregisterCallback(mBluetoothCallback);
}
} catch (RemoteException re) {
Slog.e(TAG, "Unable to unregister", re);
} finally {
mBluetoothLock.readLock().unlock();
}
SystemClock.sleep(500);
// disable
addActiveLog(BluetoothProtoEnums.ENABLE_DISABLE_REASON_START_ERROR,
mContext.getPackageName(), false);
handleDisable();
waitForState(Set.of(BluetoothAdapter.STATE_OFF));
sendBluetoothServiceDownCallback();
try {
mBluetoothLock.writeLock().lock();
if (mBluetooth != null) {
mBluetooth = null;
// Unbind
mContext.unbindService(mConnection);
}
mBluetoothGatt = null;
} finally {
mBluetoothLock.writeLock().unlock();
}
mHandler.removeMessages(MESSAGE_BLUETOOTH_STATE_CHANGE);
mState = BluetoothAdapter.STATE_OFF;
if (clearBle) {
clearBleApps();
}
mEnable = false;
// Send a Bluetooth Restart message to reenable bluetooth
Message restartMsg = mHandler.obtainMessage(MESSAGE_RESTART_BLUETOOTH_SERVICE);
mHandler.sendMessageDelayed(restartMsg, ERROR_RESTART_TIME_MS);
}
private boolean isBluetoothDisallowed() {
long callingIdentity = Binder.clearCallingIdentity();
try {
return mContext.getSystemService(UserManager.class)
.hasUserRestriction(UserManager.DISALLOW_BLUETOOTH, UserHandle.SYSTEM);
} finally {
Binder.restoreCallingIdentity(callingIdentity);
}
}
/**
* Disables BluetoothOppLauncherActivity component, so the Bluetooth sharing option is not
* offered to the user if Bluetooth or sharing is disallowed. Puts the component to its default
* state if Bluetooth is not disallowed.
*
* @param userId user to disable bluetooth sharing for.
* @param bluetoothSharingDisallowed whether bluetooth sharing is disallowed.
*/
private void updateOppLauncherComponentState(int userId, boolean bluetoothSharingDisallowed) {
final ComponentName oppLauncherComponent = new ComponentName("com.android.bluetooth",
"com.android.bluetooth.opp.BluetoothOppLauncherActivity");
final int newState =
bluetoothSharingDisallowed ? PackageManager.COMPONENT_ENABLED_STATE_DISABLED
: PackageManager.COMPONENT_ENABLED_STATE_DEFAULT;
try {
final IPackageManager imp = AppGlobals.getPackageManager();
imp.setComponentEnabledSetting(oppLauncherComponent, newState,
PackageManager.DONT_KILL_APP, userId);
} catch (Exception e) {
// The component was not found, do nothing.
}
}
private int getServiceRestartMs() {
return (mErrorRecoveryRetryCounter + 1) * SERVICE_RESTART_TIME_MS;
}
@Override
public void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
if (!DumpUtils.checkDumpPermission(mContext, TAG, writer)) {
return;
}
if ((args.length > 0) && args[0].startsWith("--proto")) {
dumpProto(fd);
return;
}
String errorMsg = null;
writer.println("Bluetooth Status");
writer.println(" enabled: " + isEnabled());
writer.println(" state: " + BluetoothAdapter.nameForState(mState));
writer.println(" address: " + mAddress);
writer.println(" name: " + mName);
if (mEnable) {
long onDuration = SystemClock.elapsedRealtime() - mLastEnabledTime;
String onDurationString = String.format(Locale.US, "%02d:%02d:%02d.%03d",
(int) (onDuration / (1000 * 60 * 60)),
(int) ((onDuration / (1000 * 60)) % 60), (int) ((onDuration / 1000) % 60),
(int) (onDuration % 1000));
writer.println(" time since enabled: " + onDurationString);
}
if (mActiveLogs.size() == 0) {
writer.println("\nBluetooth never enabled!");
} else {
writer.println("\nEnable log:");
for (ActiveLog log : mActiveLogs) {
writer.println(" " + log);
}
}
writer.println(
"\nBluetooth crashed " + mCrashes + " time" + (mCrashes == 1 ? "" : "s"));
if (mCrashes == CRASH_LOG_MAX_SIZE) {
writer.println("(last " + CRASH_LOG_MAX_SIZE + ")");
}
for (Long time : mCrashTimestamps) {
writer.println(" " + timeToLog(time));
}
writer.println("\n" + mBleApps.size() + " BLE app" + (mBleApps.size() == 1 ? "" : "s")
+ " registered");
for (ClientDeathRecipient app : mBleApps.values()) {
writer.println(" " + app.getPackageName());
}
writer.println("\nBluetoothManagerService:");
writer.println(" mEnable:" + mEnable);
writer.println(" mQuietEnable:" + mQuietEnable);
writer.println(" mEnableExternal:" + mEnableExternal);
writer.println(" mQuietEnableExternal:" + mQuietEnableExternal);
writer.println("");
writer.flush();
if (args.length == 0) {
// Add arg to produce output
args = new String[1];
args[0] = "--print";
}
if (mBluetoothBinder == null) {
errorMsg = "Bluetooth Service not connected";
} else {
try {
mBluetoothBinder.dump(fd, args);
} catch (RemoteException re) {
errorMsg = "RemoteException while dumping Bluetooth Service";
}
}
if (errorMsg != null) {
writer.println(errorMsg);
}
}
private void dumpProto(FileDescriptor fd) {
final ProtoOutputStream proto = new ProtoOutputStream(fd);
proto.write(BluetoothManagerServiceDumpProto.ENABLED, isEnabled());
proto.write(BluetoothManagerServiceDumpProto.STATE, mState);
proto.write(BluetoothManagerServiceDumpProto.STATE_NAME,
BluetoothAdapter.nameForState(mState));
proto.write(BluetoothManagerServiceDumpProto.ADDRESS, mAddress);
proto.write(BluetoothManagerServiceDumpProto.NAME, mName);
if (mEnable) {
proto.write(BluetoothManagerServiceDumpProto.LAST_ENABLED_TIME_MS, mLastEnabledTime);
}
proto.write(BluetoothManagerServiceDumpProto.CURR_TIMESTAMP_MS,
SystemClock.elapsedRealtime());
for (ActiveLog log : mActiveLogs) {
long token = proto.start(BluetoothManagerServiceDumpProto.ACTIVE_LOGS);
log.dump(proto);
proto.end(token);
}
proto.write(BluetoothManagerServiceDumpProto.NUM_CRASHES, mCrashes);
proto.write(BluetoothManagerServiceDumpProto.CRASH_LOG_MAXED,
mCrashes == CRASH_LOG_MAX_SIZE);
for (Long time : mCrashTimestamps) {
proto.write(BluetoothManagerServiceDumpProto.CRASH_TIMESTAMPS_MS, time);
}
proto.write(BluetoothManagerServiceDumpProto.NUM_BLE_APPS, mBleApps.size());
for (ClientDeathRecipient app : mBleApps.values()) {
proto.write(BluetoothManagerServiceDumpProto.BLE_APP_PACKAGE_NAMES,
app.getPackageName());
}
proto.flush();
}
private static String getEnableDisableReasonString(int reason) {
switch (reason) {
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_APPLICATION_REQUEST:
return "APPLICATION_REQUEST";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_AIRPLANE_MODE:
return "AIRPLANE_MODE";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_DISALLOWED:
return "DISALLOWED";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_RESTARTED:
return "RESTARTED";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_START_ERROR:
return "START_ERROR";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_SYSTEM_BOOT:
return "SYSTEM_BOOT";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_CRASH:
return "CRASH";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_USER_SWITCH:
return "USER_SWITCH";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_RESTORE_USER_SETTING:
return "RESTORE_USER_SETTING";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_FACTORY_RESET:
return "FACTORY_RESET";
case BluetoothProtoEnums.ENABLE_DISABLE_REASON_UNSPECIFIED:
default: return "UNKNOWN[" + reason + "]";
}
}
}