8e628dadc3
Add pollBatchedScan API to allow forced retrieval. Modified driver API, adding MSCAN, removing nextCount and making the results look more like normal manual scan results. bug:9301872 Change-Id: I58bce0624c36e2ad8d3c3f5defcb4d4e155dc8f9
1491 lines
53 KiB
Java
1491 lines
53 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.wifi;
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import android.app.ActivityManager;
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import android.app.AppOpsManager;
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import android.bluetooth.BluetoothAdapter;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.pm.PackageManager;
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import android.database.ContentObserver;
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import android.net.DhcpInfo;
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import android.net.DhcpResults;
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import android.net.LinkAddress;
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import android.net.NetworkUtils;
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import android.net.RouteInfo;
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import android.net.wifi.IWifiManager;
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import android.net.wifi.ScanResult;
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import android.net.wifi.BatchedScanResult;
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import android.net.wifi.BatchedScanSettings;
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import android.net.wifi.WifiConfiguration;
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import android.net.wifi.WifiInfo;
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import android.net.wifi.WifiManager;
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import android.net.wifi.WifiStateMachine;
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import android.net.wifi.WifiWatchdogStateMachine;
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import android.os.Binder;
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import android.os.Handler;
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import android.os.Messenger;
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import android.os.HandlerThread;
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import android.os.IBinder;
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import android.os.INetworkManagementService;
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import android.os.Message;
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import android.os.RemoteException;
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import android.os.SystemProperties;
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import android.os.UserHandle;
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import android.os.WorkSource;
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import android.os.AsyncTask;
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import android.provider.Settings;
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import android.util.Log;
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import android.util.Slog;
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import java.io.FileNotFoundException;
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import java.io.BufferedReader;
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import java.io.FileDescriptor;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.net.InetAddress;
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import java.net.Inet4Address;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.concurrent.atomic.AtomicBoolean;
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import com.android.internal.R;
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import com.android.internal.app.IBatteryStats;
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import com.android.internal.telephony.TelephonyIntents;
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import com.android.internal.util.AsyncChannel;
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import com.android.server.am.BatteryStatsService;
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import static com.android.server.wifi.WifiController.CMD_AIRPLANE_TOGGLED;
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import static com.android.server.wifi.WifiController.CMD_BATTERY_CHANGED;
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import static com.android.server.wifi.WifiController.CMD_EMERGENCY_MODE_CHANGED;
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import static com.android.server.wifi.WifiController.CMD_LOCKS_CHANGED;
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import static com.android.server.wifi.WifiController.CMD_SCAN_ALWAYS_MODE_CHANGED;
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import static com.android.server.wifi.WifiController.CMD_SCREEN_OFF;
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import static com.android.server.wifi.WifiController.CMD_SCREEN_ON;
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import static com.android.server.wifi.WifiController.CMD_SET_AP;
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import static com.android.server.wifi.WifiController.CMD_WIFI_TOGGLED;
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/**
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* WifiService handles remote WiFi operation requests by implementing
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* the IWifiManager interface.
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*
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* @hide
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*/
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public final class WifiService extends IWifiManager.Stub {
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private static final String TAG = "WifiService";
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private static final boolean DBG = false;
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final WifiStateMachine mWifiStateMachine;
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private final Context mContext;
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final LockList mLocks = new LockList();
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// some wifi lock statistics
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private int mFullHighPerfLocksAcquired;
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private int mFullHighPerfLocksReleased;
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private int mFullLocksAcquired;
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private int mFullLocksReleased;
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private int mScanLocksAcquired;
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private int mScanLocksReleased;
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private final List<Multicaster> mMulticasters =
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new ArrayList<Multicaster>();
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private int mMulticastEnabled;
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private int mMulticastDisabled;
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private final IBatteryStats mBatteryStats;
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private final AppOpsManager mAppOps;
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private String mInterfaceName;
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/* Tracks the open wi-fi network notification */
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private WifiNotificationController mNotificationController;
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/* Polls traffic stats and notifies clients */
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private WifiTrafficPoller mTrafficPoller;
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/* Tracks the persisted states for wi-fi & airplane mode */
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final WifiSettingsStore mSettingsStore;
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final boolean mBatchedScanSupported;
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/**
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* Asynchronous channel to WifiStateMachine
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*/
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private AsyncChannel mWifiStateMachineChannel;
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/**
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* Handles client connections
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*/
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private class ClientHandler extends Handler {
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ClientHandler(android.os.Looper looper) {
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super(looper);
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}
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@Override
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public void handleMessage(Message msg) {
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switch (msg.what) {
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case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: {
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if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
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if (DBG) Slog.d(TAG, "New client listening to asynchronous messages");
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// We track the clients by the Messenger
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// since it is expected to be always available
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mTrafficPoller.addClient(msg.replyTo);
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} else {
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Slog.e(TAG, "Client connection failure, error=" + msg.arg1);
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}
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break;
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}
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case AsyncChannel.CMD_CHANNEL_DISCONNECTED: {
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if (msg.arg1 == AsyncChannel.STATUS_SEND_UNSUCCESSFUL) {
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if (DBG) Slog.d(TAG, "Send failed, client connection lost");
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} else {
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if (DBG) Slog.d(TAG, "Client connection lost with reason: " + msg.arg1);
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}
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mTrafficPoller.removeClient(msg.replyTo);
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break;
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}
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case AsyncChannel.CMD_CHANNEL_FULL_CONNECTION: {
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AsyncChannel ac = new AsyncChannel();
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ac.connect(mContext, this, msg.replyTo);
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break;
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}
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/* Client commands are forwarded to state machine */
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case WifiManager.CONNECT_NETWORK:
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case WifiManager.SAVE_NETWORK:
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case WifiManager.FORGET_NETWORK:
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case WifiManager.START_WPS:
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case WifiManager.CANCEL_WPS:
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case WifiManager.DISABLE_NETWORK:
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case WifiManager.RSSI_PKTCNT_FETCH: {
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mWifiStateMachine.sendMessage(Message.obtain(msg));
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break;
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}
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default: {
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Slog.d(TAG, "ClientHandler.handleMessage ignoring msg=" + msg);
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break;
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}
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}
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}
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}
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private ClientHandler mClientHandler;
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/**
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* Handles interaction with WifiStateMachine
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*/
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private class WifiStateMachineHandler extends Handler {
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private AsyncChannel mWsmChannel;
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WifiStateMachineHandler(android.os.Looper looper) {
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super(looper);
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mWsmChannel = new AsyncChannel();
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mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler());
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}
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@Override
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public void handleMessage(Message msg) {
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switch (msg.what) {
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case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: {
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if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
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mWifiStateMachineChannel = mWsmChannel;
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} else {
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Slog.e(TAG, "WifiStateMachine connection failure, error=" + msg.arg1);
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mWifiStateMachineChannel = null;
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}
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break;
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}
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case AsyncChannel.CMD_CHANNEL_DISCONNECTED: {
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Slog.e(TAG, "WifiStateMachine channel lost, msg.arg1 =" + msg.arg1);
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mWifiStateMachineChannel = null;
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//Re-establish connection to state machine
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mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler());
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break;
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}
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default: {
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Slog.d(TAG, "WifiStateMachineHandler.handleMessage ignoring msg=" + msg);
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break;
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}
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}
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}
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}
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WifiStateMachineHandler mWifiStateMachineHandler;
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private WifiWatchdogStateMachine mWifiWatchdogStateMachine;
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public WifiService(Context context) {
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mContext = context;
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mInterfaceName = SystemProperties.get("wifi.interface", "wlan0");
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mWifiStateMachine = new WifiStateMachine(mContext, mInterfaceName);
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mWifiStateMachine.enableRssiPolling(true);
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mBatteryStats = BatteryStatsService.getService();
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mAppOps = (AppOpsManager)context.getSystemService(Context.APP_OPS_SERVICE);
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mNotificationController = new WifiNotificationController(mContext, mWifiStateMachine);
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mTrafficPoller = new WifiTrafficPoller(mContext, mInterfaceName);
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mSettingsStore = new WifiSettingsStore(mContext);
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HandlerThread wifiThread = new HandlerThread("WifiService");
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wifiThread.start();
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mClientHandler = new ClientHandler(wifiThread.getLooper());
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mWifiStateMachineHandler = new WifiStateMachineHandler(wifiThread.getLooper());
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mWifiController = new WifiController(mContext, this, wifiThread.getLooper());
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mWifiController.start();
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mBatchedScanSupported = mContext.getResources().getBoolean(
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R.bool.config_wifi_batched_scan_supported);
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registerForScanModeChange();
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mContext.registerReceiver(
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new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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if (mSettingsStore.handleAirplaneModeToggled()) {
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mWifiController.sendMessage(CMD_AIRPLANE_TOGGLED);
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}
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}
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},
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new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED));
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// Adding optimizations of only receiving broadcasts when wifi is enabled
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// can result in race conditions when apps toggle wifi in the background
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// without active user involvement. Always receive broadcasts.
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registerForBroadcasts();
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}
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private WifiController mWifiController;
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/**
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* Check if Wi-Fi needs to be enabled and start
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* if needed
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*
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* This function is used only at boot time
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*/
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public void checkAndStartWifi() {
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/* Check if wi-fi needs to be enabled */
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boolean wifiEnabled = mSettingsStore.isWifiToggleEnabled();
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Slog.i(TAG, "WifiService starting up with Wi-Fi " +
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(wifiEnabled ? "enabled" : "disabled"));
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// If we are already disabled (could be due to airplane mode), avoid changing persist
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// state here
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if (wifiEnabled) setWifiEnabled(wifiEnabled);
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mWifiWatchdogStateMachine = WifiWatchdogStateMachine.
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makeWifiWatchdogStateMachine(mContext);
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}
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/**
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* see {@link android.net.wifi.WifiManager#pingSupplicant()}
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* @return {@code true} if the operation succeeds, {@code false} otherwise
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*/
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public boolean pingSupplicant() {
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enforceAccessPermission();
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if (mWifiStateMachineChannel != null) {
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return mWifiStateMachine.syncPingSupplicant(mWifiStateMachineChannel);
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} else {
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Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
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return false;
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}
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}
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/**
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* see {@link android.net.wifi.WifiManager#startScan()}
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*
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* <p>If workSource is null, all blame is given to the calling uid.
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*/
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public void startScan(WorkSource workSource) {
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enforceChangePermission();
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if (workSource != null) {
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enforceWorkSourcePermission();
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}
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mWifiStateMachine.startScan(Binder.getCallingUid(), workSource);
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}
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private class BatchedScanRequest extends DeathRecipient {
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BatchedScanSettings settings;
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int uid;
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BatchedScanRequest(BatchedScanSettings settings, IBinder binder, int uid) {
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super(0, null, binder, null);
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this.settings = settings;
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this.uid = uid;
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}
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public void binderDied() {
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stopBatchedScan(settings, mBinder);
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}
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public String toString() {
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return "BatchedScanRequest{settings=" + settings + ", binder=" + mBinder + "}";
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}
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}
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private final List<BatchedScanRequest> mBatchedScanners = new ArrayList<BatchedScanRequest>();
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public boolean isBatchedScanSupported() {
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return mBatchedScanSupported;
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}
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public void pollBatchedScan() {
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enforceChangePermission();
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if (mBatchedScanSupported == false) return;
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mWifiStateMachine.requestBatchedScanPoll();
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}
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/**
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* see {@link android.net.wifi.WifiManager#requestBatchedScan()}
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*/
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public boolean requestBatchedScan(BatchedScanSettings requested, IBinder binder) {
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enforceChangePermission();
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if (mBatchedScanSupported == false) return false;
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requested = new BatchedScanSettings(requested);
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if (requested.isInvalid()) return false;
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BatchedScanRequest r = new BatchedScanRequest(requested, binder, Binder.getCallingUid());
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synchronized(mBatchedScanners) {
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mBatchedScanners.add(r);
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resolveBatchedScannersLocked();
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}
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return true;
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}
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public List<BatchedScanResult> getBatchedScanResults(String callingPackage) {
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enforceAccessPermission();
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if (mBatchedScanSupported == false) return new ArrayList<BatchedScanResult>();
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int userId = UserHandle.getCallingUserId();
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int uid = Binder.getCallingUid();
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long ident = Binder.clearCallingIdentity();
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try {
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if (mAppOps.noteOp(AppOpsManager.OP_WIFI_SCAN, uid, callingPackage)
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!= AppOpsManager.MODE_ALLOWED) {
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return new ArrayList<BatchedScanResult>();
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}
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int currentUser = ActivityManager.getCurrentUser();
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if (userId != currentUser) {
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return new ArrayList<BatchedScanResult>();
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} else {
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return mWifiStateMachine.syncGetBatchedScanResultsList();
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}
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} finally {
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Binder.restoreCallingIdentity(ident);
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}
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}
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public void stopBatchedScan(BatchedScanSettings settings, IBinder binder) {
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enforceChangePermission();
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if (mBatchedScanSupported == false) return;
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synchronized(mBatchedScanners) {
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BatchedScanRequest found = null;
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for (BatchedScanRequest r : mBatchedScanners) {
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if (r.mBinder.equals(binder) && r.settings.equals(settings)) {
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found = r;
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break;
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}
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}
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if (found != null) {
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mBatchedScanners.remove(found);
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resolveBatchedScannersLocked();
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}
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}
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}
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private void resolveBatchedScannersLocked() {
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BatchedScanSettings setting = new BatchedScanSettings();
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setting.scanIntervalSec = BatchedScanSettings.DEFAULT_INTERVAL_SEC;
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int responsibleUid = 0;
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setting.channelSet = new ArrayList<String>();
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if (mBatchedScanners.size() == 0) {
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mWifiStateMachine.setBatchedScanSettings(null, 0);
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return;
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}
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for (BatchedScanRequest r : mBatchedScanners) {
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BatchedScanSettings s = r.settings;
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if (s.maxScansPerBatch != BatchedScanSettings.UNSPECIFIED &&
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s.maxScansPerBatch < setting.maxScansPerBatch) {
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setting.maxScansPerBatch = s.maxScansPerBatch;
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responsibleUid = r.uid;
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}
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if (s.maxApPerScan != BatchedScanSettings.UNSPECIFIED &&
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s.maxApPerScan > setting.maxApPerScan) {
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setting.maxApPerScan = s.maxApPerScan;
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}
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if (s.scanIntervalSec != BatchedScanSettings.UNSPECIFIED &&
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s.scanIntervalSec < setting.scanIntervalSec) {
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setting.scanIntervalSec = s.scanIntervalSec;
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responsibleUid = r.uid;
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}
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if (s.maxApForDistance != BatchedScanSettings.UNSPECIFIED &&
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s.maxApForDistance > setting.maxApForDistance) {
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setting.maxApForDistance = s.maxApForDistance;
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}
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if (s.channelSet != null) {
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for (String i : s.channelSet) {
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if (setting.channelSet.contains(i) == false) setting.channelSet.add(i);
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}
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}
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}
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if (setting.channelSet.size() == 0) setting.channelSet = null;
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if (setting.scanIntervalSec < BatchedScanSettings.MIN_INTERVAL_SEC) {
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setting.scanIntervalSec = BatchedScanSettings.MIN_INTERVAL_SEC;
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}
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if (setting.maxScansPerBatch == BatchedScanSettings.UNSPECIFIED) {
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setting.maxScansPerBatch = BatchedScanSettings.DEFAULT_SCANS_PER_BATCH;
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}
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if (setting.maxApPerScan == BatchedScanSettings.UNSPECIFIED) {
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setting.maxApPerScan = BatchedScanSettings.DEFAULT_AP_PER_SCAN;
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}
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if (setting.scanIntervalSec == BatchedScanSettings.UNSPECIFIED) {
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setting.scanIntervalSec = BatchedScanSettings.DEFAULT_INTERVAL_SEC;
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}
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if (setting.maxApForDistance == BatchedScanSettings.UNSPECIFIED) {
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setting.maxApForDistance = BatchedScanSettings.DEFAULT_AP_FOR_DISTANCE;
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}
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mWifiStateMachine.setBatchedScanSettings(setting, responsibleUid);
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}
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private void enforceAccessPermission() {
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mContext.enforceCallingOrSelfPermission(android.Manifest.permission.ACCESS_WIFI_STATE,
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"WifiService");
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}
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private void enforceChangePermission() {
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mContext.enforceCallingOrSelfPermission(android.Manifest.permission.CHANGE_WIFI_STATE,
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"WifiService");
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}
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private void enforceWorkSourcePermission() {
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mContext.enforceCallingPermission(android.Manifest.permission.UPDATE_DEVICE_STATS,
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"WifiService");
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}
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private void enforceMulticastChangePermission() {
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mContext.enforceCallingOrSelfPermission(
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android.Manifest.permission.CHANGE_WIFI_MULTICAST_STATE,
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"WifiService");
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}
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private void enforceConnectivityInternalPermission() {
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mContext.enforceCallingOrSelfPermission(
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android.Manifest.permission.CONNECTIVITY_INTERNAL,
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"ConnectivityService");
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}
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/**
|
|
* see {@link android.net.wifi.WifiManager#setWifiEnabled(boolean)}
|
|
* @param enable {@code true} to enable, {@code false} to disable.
|
|
* @return {@code true} if the enable/disable operation was
|
|
* started or is already in the queue.
|
|
*/
|
|
public synchronized boolean setWifiEnabled(boolean enable) {
|
|
enforceChangePermission();
|
|
Slog.d(TAG, "setWifiEnabled: " + enable + " pid=" + Binder.getCallingPid()
|
|
+ ", uid=" + Binder.getCallingUid());
|
|
if (DBG) {
|
|
Slog.e(TAG, "Invoking mWifiStateMachine.setWifiEnabled\n");
|
|
}
|
|
|
|
/*
|
|
* Caller might not have WRITE_SECURE_SETTINGS,
|
|
* only CHANGE_WIFI_STATE is enforced
|
|
*/
|
|
|
|
long ident = Binder.clearCallingIdentity();
|
|
try {
|
|
if (! mSettingsStore.handleWifiToggled(enable)) {
|
|
// Nothing to do if wifi cannot be toggled
|
|
return true;
|
|
}
|
|
} finally {
|
|
Binder.restoreCallingIdentity(ident);
|
|
}
|
|
|
|
mWifiController.sendMessage(CMD_WIFI_TOGGLED);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* see {@link WifiManager#getWifiState()}
|
|
* @return One of {@link WifiManager#WIFI_STATE_DISABLED},
|
|
* {@link WifiManager#WIFI_STATE_DISABLING},
|
|
* {@link WifiManager#WIFI_STATE_ENABLED},
|
|
* {@link WifiManager#WIFI_STATE_ENABLING},
|
|
* {@link WifiManager#WIFI_STATE_UNKNOWN}
|
|
*/
|
|
public int getWifiEnabledState() {
|
|
enforceAccessPermission();
|
|
return mWifiStateMachine.syncGetWifiState();
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#setWifiApEnabled(WifiConfiguration, boolean)}
|
|
* @param wifiConfig SSID, security and channel details as
|
|
* part of WifiConfiguration
|
|
* @param enabled true to enable and false to disable
|
|
*/
|
|
public void setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) {
|
|
enforceChangePermission();
|
|
mWifiController.obtainMessage(CMD_SET_AP, enabled ? 1 : 0, 0, wifiConfig).sendToTarget();
|
|
}
|
|
|
|
/**
|
|
* see {@link WifiManager#getWifiApState()}
|
|
* @return One of {@link WifiManager#WIFI_AP_STATE_DISABLED},
|
|
* {@link WifiManager#WIFI_AP_STATE_DISABLING},
|
|
* {@link WifiManager#WIFI_AP_STATE_ENABLED},
|
|
* {@link WifiManager#WIFI_AP_STATE_ENABLING},
|
|
* {@link WifiManager#WIFI_AP_STATE_FAILED}
|
|
*/
|
|
public int getWifiApEnabledState() {
|
|
enforceAccessPermission();
|
|
return mWifiStateMachine.syncGetWifiApState();
|
|
}
|
|
|
|
/**
|
|
* see {@link WifiManager#getWifiApConfiguration()}
|
|
* @return soft access point configuration
|
|
*/
|
|
public WifiConfiguration getWifiApConfiguration() {
|
|
enforceAccessPermission();
|
|
return mWifiStateMachine.syncGetWifiApConfiguration();
|
|
}
|
|
|
|
/**
|
|
* see {@link WifiManager#setWifiApConfiguration(WifiConfiguration)}
|
|
* @param wifiConfig WifiConfiguration details for soft access point
|
|
*/
|
|
public void setWifiApConfiguration(WifiConfiguration wifiConfig) {
|
|
enforceChangePermission();
|
|
if (wifiConfig == null)
|
|
return;
|
|
mWifiStateMachine.setWifiApConfiguration(wifiConfig);
|
|
}
|
|
|
|
/**
|
|
* @param enable {@code true} to enable, {@code false} to disable.
|
|
* @return {@code true} if the enable/disable operation was
|
|
* started or is already in the queue.
|
|
*/
|
|
public boolean isScanAlwaysAvailable() {
|
|
enforceAccessPermission();
|
|
return mSettingsStore.isScanAlwaysAvailable();
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#disconnect()}
|
|
*/
|
|
public void disconnect() {
|
|
enforceChangePermission();
|
|
mWifiStateMachine.disconnectCommand();
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#reconnect()}
|
|
*/
|
|
public void reconnect() {
|
|
enforceChangePermission();
|
|
mWifiStateMachine.reconnectCommand();
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#reassociate()}
|
|
*/
|
|
public void reassociate() {
|
|
enforceChangePermission();
|
|
mWifiStateMachine.reassociateCommand();
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#getConfiguredNetworks()}
|
|
* @return the list of configured networks
|
|
*/
|
|
public List<WifiConfiguration> getConfiguredNetworks() {
|
|
enforceAccessPermission();
|
|
if (mWifiStateMachineChannel != null) {
|
|
return mWifiStateMachine.syncGetConfiguredNetworks(mWifiStateMachineChannel);
|
|
} else {
|
|
Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#addOrUpdateNetwork(WifiConfiguration)}
|
|
* @return the supplicant-assigned identifier for the new or updated
|
|
* network if the operation succeeds, or {@code -1} if it fails
|
|
*/
|
|
public int addOrUpdateNetwork(WifiConfiguration config) {
|
|
enforceChangePermission();
|
|
if (mWifiStateMachineChannel != null) {
|
|
return mWifiStateMachine.syncAddOrUpdateNetwork(mWifiStateMachineChannel, config);
|
|
} else {
|
|
Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* See {@link android.net.wifi.WifiManager#removeNetwork(int)}
|
|
* @param netId the integer that identifies the network configuration
|
|
* to the supplicant
|
|
* @return {@code true} if the operation succeeded
|
|
*/
|
|
public boolean removeNetwork(int netId) {
|
|
enforceChangePermission();
|
|
if (mWifiStateMachineChannel != null) {
|
|
return mWifiStateMachine.syncRemoveNetwork(mWifiStateMachineChannel, netId);
|
|
} else {
|
|
Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* See {@link android.net.wifi.WifiManager#enableNetwork(int, boolean)}
|
|
* @param netId the integer that identifies the network configuration
|
|
* to the supplicant
|
|
* @param disableOthers if true, disable all other networks.
|
|
* @return {@code true} if the operation succeeded
|
|
*/
|
|
public boolean enableNetwork(int netId, boolean disableOthers) {
|
|
enforceChangePermission();
|
|
if (mWifiStateMachineChannel != null) {
|
|
return mWifiStateMachine.syncEnableNetwork(mWifiStateMachineChannel, netId,
|
|
disableOthers);
|
|
} else {
|
|
Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* See {@link android.net.wifi.WifiManager#disableNetwork(int)}
|
|
* @param netId the integer that identifies the network configuration
|
|
* to the supplicant
|
|
* @return {@code true} if the operation succeeded
|
|
*/
|
|
public boolean disableNetwork(int netId) {
|
|
enforceChangePermission();
|
|
if (mWifiStateMachineChannel != null) {
|
|
return mWifiStateMachine.syncDisableNetwork(mWifiStateMachineChannel, netId);
|
|
} else {
|
|
Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* See {@link android.net.wifi.WifiManager#getConnectionInfo()}
|
|
* @return the Wi-Fi information, contained in {@link WifiInfo}.
|
|
*/
|
|
public WifiInfo getConnectionInfo() {
|
|
enforceAccessPermission();
|
|
/*
|
|
* Make sure we have the latest information, by sending
|
|
* a status request to the supplicant.
|
|
*/
|
|
return mWifiStateMachine.syncRequestConnectionInfo();
|
|
}
|
|
|
|
/**
|
|
* Return the results of the most recent access point scan, in the form of
|
|
* a list of {@link ScanResult} objects.
|
|
* @return the list of results
|
|
*/
|
|
public List<ScanResult> getScanResults(String callingPackage) {
|
|
enforceAccessPermission();
|
|
int userId = UserHandle.getCallingUserId();
|
|
int uid = Binder.getCallingUid();
|
|
long ident = Binder.clearCallingIdentity();
|
|
try {
|
|
if (mAppOps.noteOp(AppOpsManager.OP_WIFI_SCAN, uid, callingPackage)
|
|
!= AppOpsManager.MODE_ALLOWED) {
|
|
return new ArrayList<ScanResult>();
|
|
}
|
|
int currentUser = ActivityManager.getCurrentUser();
|
|
if (userId != currentUser) {
|
|
return new ArrayList<ScanResult>();
|
|
} else {
|
|
return mWifiStateMachine.syncGetScanResultsList();
|
|
}
|
|
} finally {
|
|
Binder.restoreCallingIdentity(ident);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tell the supplicant to persist the current list of configured networks.
|
|
* @return {@code true} if the operation succeeded
|
|
*
|
|
* TODO: deprecate this
|
|
*/
|
|
public boolean saveConfiguration() {
|
|
boolean result = true;
|
|
enforceChangePermission();
|
|
if (mWifiStateMachineChannel != null) {
|
|
return mWifiStateMachine.syncSaveConfig(mWifiStateMachineChannel);
|
|
} else {
|
|
Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the country code
|
|
* @param countryCode ISO 3166 country code.
|
|
* @param persist {@code true} if the setting should be remembered.
|
|
*
|
|
* The persist behavior exists so that wifi can fall back to the last
|
|
* persisted country code on a restart, when the locale information is
|
|
* not available from telephony.
|
|
*/
|
|
public void setCountryCode(String countryCode, boolean persist) {
|
|
Slog.i(TAG, "WifiService trying to set country code to " + countryCode +
|
|
" with persist set to " + persist);
|
|
enforceChangePermission();
|
|
final long token = Binder.clearCallingIdentity();
|
|
try {
|
|
mWifiStateMachine.setCountryCode(countryCode, persist);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(token);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the operational frequency band
|
|
* @param band One of
|
|
* {@link WifiManager#WIFI_FREQUENCY_BAND_AUTO},
|
|
* {@link WifiManager#WIFI_FREQUENCY_BAND_5GHZ},
|
|
* {@link WifiManager#WIFI_FREQUENCY_BAND_2GHZ},
|
|
* @param persist {@code true} if the setting should be remembered.
|
|
*
|
|
*/
|
|
public void setFrequencyBand(int band, boolean persist) {
|
|
enforceChangePermission();
|
|
if (!isDualBandSupported()) return;
|
|
Slog.i(TAG, "WifiService trying to set frequency band to " + band +
|
|
" with persist set to " + persist);
|
|
final long token = Binder.clearCallingIdentity();
|
|
try {
|
|
mWifiStateMachine.setFrequencyBand(band, persist);
|
|
} finally {
|
|
Binder.restoreCallingIdentity(token);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the operational frequency band
|
|
*/
|
|
public int getFrequencyBand() {
|
|
enforceAccessPermission();
|
|
return mWifiStateMachine.getFrequencyBand();
|
|
}
|
|
|
|
public boolean isDualBandSupported() {
|
|
//TODO: Should move towards adding a driver API that checks at runtime
|
|
return mContext.getResources().getBoolean(
|
|
com.android.internal.R.bool.config_wifi_dual_band_support);
|
|
}
|
|
|
|
/**
|
|
* Return the DHCP-assigned addresses from the last successful DHCP request,
|
|
* if any.
|
|
* @return the DHCP information
|
|
* @deprecated
|
|
*/
|
|
public DhcpInfo getDhcpInfo() {
|
|
enforceAccessPermission();
|
|
DhcpResults dhcpResults = mWifiStateMachine.syncGetDhcpResults();
|
|
if (dhcpResults.linkProperties == null) return null;
|
|
|
|
DhcpInfo info = new DhcpInfo();
|
|
for (LinkAddress la : dhcpResults.linkProperties.getLinkAddresses()) {
|
|
InetAddress addr = la.getAddress();
|
|
if (addr instanceof Inet4Address) {
|
|
info.ipAddress = NetworkUtils.inetAddressToInt((Inet4Address)addr);
|
|
break;
|
|
}
|
|
}
|
|
for (RouteInfo r : dhcpResults.linkProperties.getRoutes()) {
|
|
if (r.isDefaultRoute()) {
|
|
InetAddress gateway = r.getGateway();
|
|
if (gateway instanceof Inet4Address) {
|
|
info.gateway = NetworkUtils.inetAddressToInt((Inet4Address)gateway);
|
|
}
|
|
} else if (r.hasGateway() == false) {
|
|
LinkAddress dest = r.getDestination();
|
|
if (dest.getAddress() instanceof Inet4Address) {
|
|
info.netmask = NetworkUtils.prefixLengthToNetmaskInt(
|
|
dest.getNetworkPrefixLength());
|
|
}
|
|
}
|
|
}
|
|
int dnsFound = 0;
|
|
for (InetAddress dns : dhcpResults.linkProperties.getDnses()) {
|
|
if (dns instanceof Inet4Address) {
|
|
if (dnsFound == 0) {
|
|
info.dns1 = NetworkUtils.inetAddressToInt((Inet4Address)dns);
|
|
} else {
|
|
info.dns2 = NetworkUtils.inetAddressToInt((Inet4Address)dns);
|
|
}
|
|
if (++dnsFound > 1) break;
|
|
}
|
|
}
|
|
InetAddress serverAddress = dhcpResults.serverAddress;
|
|
if (serverAddress instanceof Inet4Address) {
|
|
info.serverAddress = NetworkUtils.inetAddressToInt((Inet4Address)serverAddress);
|
|
}
|
|
info.leaseDuration = dhcpResults.leaseDuration;
|
|
|
|
return info;
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#startWifi}
|
|
*
|
|
*/
|
|
public void startWifi() {
|
|
enforceConnectivityInternalPermission();
|
|
/* TODO: may be add permissions for access only to connectivity service
|
|
* TODO: if a start issued, keep wifi alive until a stop issued irrespective
|
|
* of WifiLock & device idle status unless wifi enabled status is toggled
|
|
*/
|
|
|
|
mWifiStateMachine.setDriverStart(true);
|
|
mWifiStateMachine.reconnectCommand();
|
|
}
|
|
|
|
public void captivePortalCheckComplete() {
|
|
enforceConnectivityInternalPermission();
|
|
mWifiStateMachine.captivePortalCheckComplete();
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#stopWifi}
|
|
*
|
|
*/
|
|
public void stopWifi() {
|
|
enforceConnectivityInternalPermission();
|
|
/*
|
|
* TODO: if a stop is issued, wifi is brought up only by startWifi
|
|
* unless wifi enabled status is toggled
|
|
*/
|
|
mWifiStateMachine.setDriverStart(false);
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#addToBlacklist}
|
|
*
|
|
*/
|
|
public void addToBlacklist(String bssid) {
|
|
enforceChangePermission();
|
|
|
|
mWifiStateMachine.addToBlacklist(bssid);
|
|
}
|
|
|
|
/**
|
|
* see {@link android.net.wifi.WifiManager#clearBlacklist}
|
|
*
|
|
*/
|
|
public void clearBlacklist() {
|
|
enforceChangePermission();
|
|
|
|
mWifiStateMachine.clearBlacklist();
|
|
}
|
|
|
|
/**
|
|
* enable TDLS for the local NIC to remote NIC
|
|
* The APPs don't know the remote MAC address to identify NIC though,
|
|
* so we need to do additional work to find it from remote IP address
|
|
*/
|
|
|
|
class TdlsTaskParams {
|
|
public String remoteIpAddress;
|
|
public boolean enable;
|
|
}
|
|
|
|
class TdlsTask extends AsyncTask<TdlsTaskParams, Integer, Integer> {
|
|
@Override
|
|
protected Integer doInBackground(TdlsTaskParams... params) {
|
|
|
|
// Retrieve parameters for the call
|
|
TdlsTaskParams param = params[0];
|
|
String remoteIpAddress = param.remoteIpAddress.trim();
|
|
boolean enable = param.enable;
|
|
|
|
// Get MAC address of Remote IP
|
|
String macAddress = null;
|
|
|
|
BufferedReader reader = null;
|
|
|
|
try {
|
|
reader = new BufferedReader(new FileReader("/proc/net/arp"));
|
|
|
|
// Skip over the line bearing colum titles
|
|
String line = reader.readLine();
|
|
|
|
while ((line = reader.readLine()) != null) {
|
|
String[] tokens = line.split("[ ]+");
|
|
if (tokens.length < 6) {
|
|
continue;
|
|
}
|
|
|
|
// ARP column format is
|
|
// Address HWType HWAddress Flags Mask IFace
|
|
String ip = tokens[0];
|
|
String mac = tokens[3];
|
|
|
|
if (remoteIpAddress.equals(ip)) {
|
|
macAddress = mac;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (macAddress == null) {
|
|
Slog.w(TAG, "Did not find remoteAddress {" + remoteIpAddress + "} in " +
|
|
"/proc/net/arp");
|
|
} else {
|
|
enableTdlsWithMacAddress(macAddress, enable);
|
|
}
|
|
|
|
} catch (FileNotFoundException e) {
|
|
Slog.e(TAG, "Could not open /proc/net/arp to lookup mac address");
|
|
} catch (IOException e) {
|
|
Slog.e(TAG, "Could not read /proc/net/arp to lookup mac address");
|
|
} finally {
|
|
try {
|
|
if (reader != null) {
|
|
reader.close();
|
|
}
|
|
}
|
|
catch (IOException e) {
|
|
// Do nothing
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
public void enableTdls(String remoteAddress, boolean enable) {
|
|
TdlsTaskParams params = new TdlsTaskParams();
|
|
params.remoteIpAddress = remoteAddress;
|
|
params.enable = enable;
|
|
new TdlsTask().execute(params);
|
|
}
|
|
|
|
|
|
public void enableTdlsWithMacAddress(String remoteMacAddress, boolean enable) {
|
|
mWifiStateMachine.enableTdls(remoteMacAddress, enable);
|
|
}
|
|
|
|
/**
|
|
* Get a reference to handler. This is used by a client to establish
|
|
* an AsyncChannel communication with WifiService
|
|
*/
|
|
public Messenger getWifiServiceMessenger() {
|
|
enforceAccessPermission();
|
|
enforceChangePermission();
|
|
return new Messenger(mClientHandler);
|
|
}
|
|
|
|
/** Get a reference to WifiStateMachine handler for AsyncChannel communication */
|
|
public Messenger getWifiStateMachineMessenger() {
|
|
enforceAccessPermission();
|
|
enforceChangePermission();
|
|
return mWifiStateMachine.getMessenger();
|
|
}
|
|
|
|
/**
|
|
* Get the IP and proxy configuration file
|
|
*/
|
|
public String getConfigFile() {
|
|
enforceAccessPermission();
|
|
return mWifiStateMachine.getConfigFile();
|
|
}
|
|
|
|
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
|
|
@Override
|
|
public void onReceive(Context context, Intent intent) {
|
|
String action = intent.getAction();
|
|
if (action.equals(Intent.ACTION_SCREEN_ON)) {
|
|
mWifiController.sendMessage(CMD_SCREEN_ON);
|
|
} else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
|
|
mWifiController.sendMessage(CMD_SCREEN_OFF);
|
|
} else if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
|
|
int pluggedType = intent.getIntExtra("plugged", 0);
|
|
mWifiController.sendMessage(CMD_BATTERY_CHANGED, pluggedType, 0, null);
|
|
} else if (action.equals(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED)) {
|
|
int state = intent.getIntExtra(BluetoothAdapter.EXTRA_CONNECTION_STATE,
|
|
BluetoothAdapter.STATE_DISCONNECTED);
|
|
mWifiStateMachine.sendBluetoothAdapterStateChange(state);
|
|
} else if (action.equals(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED)) {
|
|
boolean emergencyMode = intent.getBooleanExtra("phoneinECMState", false);
|
|
mWifiController.sendMessage(CMD_EMERGENCY_MODE_CHANGED, emergencyMode ? 1 : 0, 0);
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Observes settings changes to scan always mode.
|
|
*/
|
|
private void registerForScanModeChange() {
|
|
ContentObserver contentObserver = new ContentObserver(null) {
|
|
@Override
|
|
public void onChange(boolean selfChange) {
|
|
mSettingsStore.handleWifiScanAlwaysAvailableToggled();
|
|
mWifiController.sendMessage(CMD_SCAN_ALWAYS_MODE_CHANGED);
|
|
}
|
|
};
|
|
|
|
mContext.getContentResolver().registerContentObserver(
|
|
Settings.Global.getUriFor(Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE),
|
|
false, contentObserver);
|
|
}
|
|
|
|
private void registerForBroadcasts() {
|
|
IntentFilter intentFilter = new IntentFilter();
|
|
intentFilter.addAction(Intent.ACTION_SCREEN_ON);
|
|
intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
|
|
intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
|
|
intentFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
|
|
intentFilter.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED);
|
|
intentFilter.addAction(TelephonyIntents.ACTION_EMERGENCY_CALLBACK_MODE_CHANGED);
|
|
mContext.registerReceiver(mReceiver, intentFilter);
|
|
}
|
|
|
|
@Override
|
|
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
|
|
if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
|
|
!= PackageManager.PERMISSION_GRANTED) {
|
|
pw.println("Permission Denial: can't dump WifiService from from pid="
|
|
+ Binder.getCallingPid()
|
|
+ ", uid=" + Binder.getCallingUid());
|
|
return;
|
|
}
|
|
pw.println("Wi-Fi is " + mWifiStateMachine.syncGetWifiStateByName());
|
|
pw.println("Stay-awake conditions: " +
|
|
Settings.Global.getInt(mContext.getContentResolver(),
|
|
Settings.Global.STAY_ON_WHILE_PLUGGED_IN, 0));
|
|
pw.println("mMulticastEnabled " + mMulticastEnabled);
|
|
pw.println("mMulticastDisabled " + mMulticastDisabled);
|
|
mWifiController.dump(fd, pw, args);
|
|
mSettingsStore.dump(fd, pw, args);
|
|
mNotificationController.dump(fd, pw, args);
|
|
mTrafficPoller.dump(fd, pw, args);
|
|
|
|
pw.println("Latest scan results:");
|
|
List<ScanResult> scanResults = mWifiStateMachine.syncGetScanResultsList();
|
|
if (scanResults != null && scanResults.size() != 0) {
|
|
pw.println(" BSSID Frequency RSSI Flags SSID");
|
|
for (ScanResult r : scanResults) {
|
|
pw.printf(" %17s %9d %5d %-16s %s%n",
|
|
r.BSSID,
|
|
r.frequency,
|
|
r.level,
|
|
r.capabilities,
|
|
r.SSID == null ? "" : r.SSID);
|
|
}
|
|
}
|
|
pw.println();
|
|
pw.println("Locks acquired: " + mFullLocksAcquired + " full, " +
|
|
mFullHighPerfLocksAcquired + " full high perf, " +
|
|
mScanLocksAcquired + " scan");
|
|
pw.println("Locks released: " + mFullLocksReleased + " full, " +
|
|
mFullHighPerfLocksReleased + " full high perf, " +
|
|
mScanLocksReleased + " scan");
|
|
pw.println();
|
|
pw.println("Locks held:");
|
|
mLocks.dump(pw);
|
|
|
|
mWifiWatchdogStateMachine.dump(fd, pw, args);
|
|
pw.println();
|
|
mWifiStateMachine.dump(fd, pw, args);
|
|
pw.println();
|
|
}
|
|
|
|
private class WifiLock extends DeathRecipient {
|
|
WifiLock(int lockMode, String tag, IBinder binder, WorkSource ws) {
|
|
super(lockMode, tag, binder, ws);
|
|
}
|
|
|
|
public void binderDied() {
|
|
synchronized (mLocks) {
|
|
releaseWifiLockLocked(mBinder);
|
|
}
|
|
}
|
|
|
|
public String toString() {
|
|
return "WifiLock{" + mTag + " type=" + mMode + " binder=" + mBinder + "}";
|
|
}
|
|
}
|
|
|
|
class LockList {
|
|
private List<WifiLock> mList;
|
|
|
|
private LockList() {
|
|
mList = new ArrayList<WifiLock>();
|
|
}
|
|
|
|
synchronized boolean hasLocks() {
|
|
return !mList.isEmpty();
|
|
}
|
|
|
|
synchronized int getStrongestLockMode() {
|
|
if (mList.isEmpty()) {
|
|
return WifiManager.WIFI_MODE_FULL;
|
|
}
|
|
|
|
if (mFullHighPerfLocksAcquired > mFullHighPerfLocksReleased) {
|
|
return WifiManager.WIFI_MODE_FULL_HIGH_PERF;
|
|
}
|
|
|
|
if (mFullLocksAcquired > mFullLocksReleased) {
|
|
return WifiManager.WIFI_MODE_FULL;
|
|
}
|
|
|
|
return WifiManager.WIFI_MODE_SCAN_ONLY;
|
|
}
|
|
|
|
synchronized void updateWorkSource(WorkSource ws) {
|
|
for (int i = 0; i < mLocks.mList.size(); i++) {
|
|
ws.add(mLocks.mList.get(i).mWorkSource);
|
|
}
|
|
}
|
|
|
|
private void addLock(WifiLock lock) {
|
|
if (findLockByBinder(lock.mBinder) < 0) {
|
|
mList.add(lock);
|
|
}
|
|
}
|
|
|
|
private WifiLock removeLock(IBinder binder) {
|
|
int index = findLockByBinder(binder);
|
|
if (index >= 0) {
|
|
WifiLock ret = mList.remove(index);
|
|
ret.unlinkDeathRecipient();
|
|
return ret;
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
private int findLockByBinder(IBinder binder) {
|
|
int size = mList.size();
|
|
for (int i = size - 1; i >= 0; i--) {
|
|
if (mList.get(i).mBinder == binder)
|
|
return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
private void dump(PrintWriter pw) {
|
|
for (WifiLock l : mList) {
|
|
pw.print(" ");
|
|
pw.println(l);
|
|
}
|
|
}
|
|
}
|
|
|
|
void enforceWakeSourcePermission(int uid, int pid) {
|
|
if (uid == android.os.Process.myUid()) {
|
|
return;
|
|
}
|
|
mContext.enforcePermission(android.Manifest.permission.UPDATE_DEVICE_STATS,
|
|
pid, uid, null);
|
|
}
|
|
|
|
public boolean acquireWifiLock(IBinder binder, int lockMode, String tag, WorkSource ws) {
|
|
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null);
|
|
if (lockMode != WifiManager.WIFI_MODE_FULL &&
|
|
lockMode != WifiManager.WIFI_MODE_SCAN_ONLY &&
|
|
lockMode != WifiManager.WIFI_MODE_FULL_HIGH_PERF) {
|
|
Slog.e(TAG, "Illegal argument, lockMode= " + lockMode);
|
|
if (DBG) throw new IllegalArgumentException("lockMode=" + lockMode);
|
|
return false;
|
|
}
|
|
if (ws != null && ws.size() == 0) {
|
|
ws = null;
|
|
}
|
|
if (ws != null) {
|
|
enforceWakeSourcePermission(Binder.getCallingUid(), Binder.getCallingPid());
|
|
}
|
|
if (ws == null) {
|
|
ws = new WorkSource(Binder.getCallingUid());
|
|
}
|
|
WifiLock wifiLock = new WifiLock(lockMode, tag, binder, ws);
|
|
synchronized (mLocks) {
|
|
return acquireWifiLockLocked(wifiLock);
|
|
}
|
|
}
|
|
|
|
private void noteAcquireWifiLock(WifiLock wifiLock) throws RemoteException {
|
|
switch(wifiLock.mMode) {
|
|
case WifiManager.WIFI_MODE_FULL:
|
|
case WifiManager.WIFI_MODE_FULL_HIGH_PERF:
|
|
case WifiManager.WIFI_MODE_SCAN_ONLY:
|
|
mBatteryStats.noteFullWifiLockAcquiredFromSource(wifiLock.mWorkSource);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void noteReleaseWifiLock(WifiLock wifiLock) throws RemoteException {
|
|
switch(wifiLock.mMode) {
|
|
case WifiManager.WIFI_MODE_FULL:
|
|
case WifiManager.WIFI_MODE_FULL_HIGH_PERF:
|
|
case WifiManager.WIFI_MODE_SCAN_ONLY:
|
|
mBatteryStats.noteFullWifiLockReleasedFromSource(wifiLock.mWorkSource);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private boolean acquireWifiLockLocked(WifiLock wifiLock) {
|
|
if (DBG) Slog.d(TAG, "acquireWifiLockLocked: " + wifiLock);
|
|
|
|
mLocks.addLock(wifiLock);
|
|
|
|
long ident = Binder.clearCallingIdentity();
|
|
try {
|
|
noteAcquireWifiLock(wifiLock);
|
|
switch(wifiLock.mMode) {
|
|
case WifiManager.WIFI_MODE_FULL:
|
|
++mFullLocksAcquired;
|
|
break;
|
|
case WifiManager.WIFI_MODE_FULL_HIGH_PERF:
|
|
++mFullHighPerfLocksAcquired;
|
|
break;
|
|
|
|
case WifiManager.WIFI_MODE_SCAN_ONLY:
|
|
++mScanLocksAcquired;
|
|
break;
|
|
}
|
|
mWifiController.sendMessage(CMD_LOCKS_CHANGED);
|
|
return true;
|
|
} catch (RemoteException e) {
|
|
return false;
|
|
} finally {
|
|
Binder.restoreCallingIdentity(ident);
|
|
}
|
|
}
|
|
|
|
public void updateWifiLockWorkSource(IBinder lock, WorkSource ws) {
|
|
int uid = Binder.getCallingUid();
|
|
int pid = Binder.getCallingPid();
|
|
if (ws != null && ws.size() == 0) {
|
|
ws = null;
|
|
}
|
|
if (ws != null) {
|
|
enforceWakeSourcePermission(uid, pid);
|
|
}
|
|
long ident = Binder.clearCallingIdentity();
|
|
try {
|
|
synchronized (mLocks) {
|
|
int index = mLocks.findLockByBinder(lock);
|
|
if (index < 0) {
|
|
throw new IllegalArgumentException("Wifi lock not active");
|
|
}
|
|
WifiLock wl = mLocks.mList.get(index);
|
|
noteReleaseWifiLock(wl);
|
|
wl.mWorkSource = ws != null ? new WorkSource(ws) : new WorkSource(uid);
|
|
noteAcquireWifiLock(wl);
|
|
}
|
|
} catch (RemoteException e) {
|
|
} finally {
|
|
Binder.restoreCallingIdentity(ident);
|
|
}
|
|
}
|
|
|
|
public boolean releaseWifiLock(IBinder lock) {
|
|
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null);
|
|
synchronized (mLocks) {
|
|
return releaseWifiLockLocked(lock);
|
|
}
|
|
}
|
|
|
|
private boolean releaseWifiLockLocked(IBinder lock) {
|
|
boolean hadLock;
|
|
|
|
WifiLock wifiLock = mLocks.removeLock(lock);
|
|
|
|
if (DBG) Slog.d(TAG, "releaseWifiLockLocked: " + wifiLock);
|
|
|
|
hadLock = (wifiLock != null);
|
|
|
|
long ident = Binder.clearCallingIdentity();
|
|
try {
|
|
if (hadLock) {
|
|
noteReleaseWifiLock(wifiLock);
|
|
switch(wifiLock.mMode) {
|
|
case WifiManager.WIFI_MODE_FULL:
|
|
++mFullLocksReleased;
|
|
break;
|
|
case WifiManager.WIFI_MODE_FULL_HIGH_PERF:
|
|
++mFullHighPerfLocksReleased;
|
|
break;
|
|
case WifiManager.WIFI_MODE_SCAN_ONLY:
|
|
++mScanLocksReleased;
|
|
break;
|
|
}
|
|
mWifiController.sendMessage(CMD_LOCKS_CHANGED);
|
|
}
|
|
} catch (RemoteException e) {
|
|
} finally {
|
|
Binder.restoreCallingIdentity(ident);
|
|
}
|
|
|
|
return hadLock;
|
|
}
|
|
|
|
private abstract class DeathRecipient
|
|
implements IBinder.DeathRecipient {
|
|
String mTag;
|
|
int mMode;
|
|
IBinder mBinder;
|
|
WorkSource mWorkSource;
|
|
|
|
DeathRecipient(int mode, String tag, IBinder binder, WorkSource ws) {
|
|
super();
|
|
mTag = tag;
|
|
mMode = mode;
|
|
mBinder = binder;
|
|
mWorkSource = ws;
|
|
try {
|
|
mBinder.linkToDeath(this, 0);
|
|
} catch (RemoteException e) {
|
|
binderDied();
|
|
}
|
|
}
|
|
|
|
void unlinkDeathRecipient() {
|
|
mBinder.unlinkToDeath(this, 0);
|
|
}
|
|
}
|
|
|
|
private class Multicaster extends DeathRecipient {
|
|
Multicaster(String tag, IBinder binder) {
|
|
super(Binder.getCallingUid(), tag, binder, null);
|
|
}
|
|
|
|
public void binderDied() {
|
|
Slog.e(TAG, "Multicaster binderDied");
|
|
synchronized (mMulticasters) {
|
|
int i = mMulticasters.indexOf(this);
|
|
if (i != -1) {
|
|
removeMulticasterLocked(i, mMode);
|
|
}
|
|
}
|
|
}
|
|
|
|
public String toString() {
|
|
return "Multicaster{" + mTag + " binder=" + mBinder + "}";
|
|
}
|
|
|
|
public int getUid() {
|
|
return mMode;
|
|
}
|
|
}
|
|
|
|
public void initializeMulticastFiltering() {
|
|
enforceMulticastChangePermission();
|
|
|
|
synchronized (mMulticasters) {
|
|
// if anybody had requested filters be off, leave off
|
|
if (mMulticasters.size() != 0) {
|
|
return;
|
|
} else {
|
|
mWifiStateMachine.startFilteringMulticastV4Packets();
|
|
}
|
|
}
|
|
}
|
|
|
|
public void acquireMulticastLock(IBinder binder, String tag) {
|
|
enforceMulticastChangePermission();
|
|
|
|
synchronized (mMulticasters) {
|
|
mMulticastEnabled++;
|
|
mMulticasters.add(new Multicaster(tag, binder));
|
|
// Note that we could call stopFilteringMulticastV4Packets only when
|
|
// our new size == 1 (first call), but this function won't
|
|
// be called often and by making the stopPacket call each
|
|
// time we're less fragile and self-healing.
|
|
mWifiStateMachine.stopFilteringMulticastV4Packets();
|
|
}
|
|
|
|
int uid = Binder.getCallingUid();
|
|
final long ident = Binder.clearCallingIdentity();
|
|
try {
|
|
mBatteryStats.noteWifiMulticastEnabled(uid);
|
|
} catch (RemoteException e) {
|
|
} finally {
|
|
Binder.restoreCallingIdentity(ident);
|
|
}
|
|
}
|
|
|
|
public void releaseMulticastLock() {
|
|
enforceMulticastChangePermission();
|
|
|
|
int uid = Binder.getCallingUid();
|
|
synchronized (mMulticasters) {
|
|
mMulticastDisabled++;
|
|
int size = mMulticasters.size();
|
|
for (int i = size - 1; i >= 0; i--) {
|
|
Multicaster m = mMulticasters.get(i);
|
|
if ((m != null) && (m.getUid() == uid)) {
|
|
removeMulticasterLocked(i, uid);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private void removeMulticasterLocked(int i, int uid)
|
|
{
|
|
Multicaster removed = mMulticasters.remove(i);
|
|
|
|
if (removed != null) {
|
|
removed.unlinkDeathRecipient();
|
|
}
|
|
if (mMulticasters.size() == 0) {
|
|
mWifiStateMachine.startFilteringMulticastV4Packets();
|
|
}
|
|
|
|
final long ident = Binder.clearCallingIdentity();
|
|
try {
|
|
mBatteryStats.noteWifiMulticastDisabled(uid);
|
|
} catch (RemoteException e) {
|
|
} finally {
|
|
Binder.restoreCallingIdentity(ident);
|
|
}
|
|
}
|
|
|
|
public boolean isMulticastEnabled() {
|
|
enforceAccessPermission();
|
|
|
|
synchronized (mMulticasters) {
|
|
return (mMulticasters.size() > 0);
|
|
}
|
|
}
|
|
}
|