| /* |
| * Copyright (C) 2010 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.wifi; |
| |
| import android.app.ActivityManager; |
| import android.app.AppOpsManager; |
| import android.bluetooth.BluetoothAdapter; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.content.pm.UserInfo; |
| import android.database.ContentObserver; |
| import android.net.DhcpInfo; |
| import android.net.DhcpResults; |
| import android.net.IpConfiguration.ProxySettings; |
| import android.net.LinkAddress; |
| import android.net.NetworkUtils; |
| import android.net.RouteInfo; |
| import android.net.wifi.*; |
| import android.net.wifi.IWifiManager; |
| import android.os.AsyncTask; |
| import android.os.Binder; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.IBinder; |
| import android.os.Message; |
| import android.os.Messenger; |
| import android.os.RemoteException; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.os.WorkSource; |
| import android.provider.Settings; |
| import android.util.Log; |
| import android.util.Slog; |
| |
| import java.io.FileNotFoundException; |
| import java.io.BufferedReader; |
| import java.io.FileDescriptor; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.lang.Override; |
| import java.net.InetAddress; |
| import java.net.Inet4Address; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import com.android.internal.R; |
| import com.android.internal.app.IBatteryStats; |
| import com.android.internal.telephony.TelephonyIntents; |
| import com.android.internal.util.AsyncChannel; |
| import com.android.server.am.BatteryStatsService; |
| |
| import static com.android.server.wifi.WifiController.CMD_AIRPLANE_TOGGLED; |
| import static com.android.server.wifi.WifiController.CMD_BATTERY_CHANGED; |
| import static com.android.server.wifi.WifiController.CMD_EMERGENCY_MODE_CHANGED; |
| import static com.android.server.wifi.WifiController.CMD_LOCKS_CHANGED; |
| import static com.android.server.wifi.WifiController.CMD_SCAN_ALWAYS_MODE_CHANGED; |
| import static com.android.server.wifi.WifiController.CMD_SCREEN_OFF; |
| import static com.android.server.wifi.WifiController.CMD_SCREEN_ON; |
| import static com.android.server.wifi.WifiController.CMD_SET_AP; |
| import static com.android.server.wifi.WifiController.CMD_USER_PRESENT; |
| import static com.android.server.wifi.WifiController.CMD_WIFI_TOGGLED; |
| /** |
| * WifiService handles remote WiFi operation requests by implementing |
| * the IWifiManager interface. |
| * |
| * @hide |
| */ |
| public final class WifiServiceImpl extends IWifiManager.Stub { |
| private static final String TAG = "WifiService"; |
| private static final boolean DBG = true; |
| |
| final WifiStateMachine mWifiStateMachine; |
| |
| private final Context mContext; |
| |
| final LockList mLocks = new LockList(); |
| // some wifi lock statistics |
| private int mFullHighPerfLocksAcquired; |
| private int mFullHighPerfLocksReleased; |
| private int mFullLocksAcquired; |
| private int mFullLocksReleased; |
| private int mScanLocksAcquired; |
| private int mScanLocksReleased; |
| |
| private final List<Multicaster> mMulticasters = |
| new ArrayList<Multicaster>(); |
| private int mMulticastEnabled; |
| private int mMulticastDisabled; |
| |
| private final IBatteryStats mBatteryStats; |
| private final AppOpsManager mAppOps; |
| |
| private String mInterfaceName; |
| |
| // Debug counter tracking scan requests sent by WifiManager |
| private int scanRequestCounter = 0; |
| |
| /* Tracks the open wi-fi network notification */ |
| private WifiNotificationController mNotificationController; |
| /* Polls traffic stats and notifies clients */ |
| private WifiTrafficPoller mTrafficPoller; |
| /* Tracks the persisted states for wi-fi & airplane mode */ |
| final WifiSettingsStore mSettingsStore; |
| |
| final boolean mBatchedScanSupported; |
| |
| /** |
| * Asynchronous channel to WifiStateMachine |
| */ |
| private AsyncChannel mWifiStateMachineChannel; |
| |
| /** |
| * Handles client connections |
| */ |
| private class ClientHandler extends Handler { |
| |
| ClientHandler(android.os.Looper looper) { |
| super(looper); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { |
| if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { |
| if (DBG) Slog.d(TAG, "New client listening to asynchronous messages"); |
| // We track the clients by the Messenger |
| // since it is expected to be always available |
| mTrafficPoller.addClient(msg.replyTo); |
| } else { |
| Slog.e(TAG, "Client connection failure, error=" + msg.arg1); |
| } |
| break; |
| } |
| case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { |
| if (msg.arg1 == AsyncChannel.STATUS_SEND_UNSUCCESSFUL) { |
| if (DBG) Slog.d(TAG, "Send failed, client connection lost"); |
| } else { |
| if (DBG) Slog.d(TAG, "Client connection lost with reason: " + msg.arg1); |
| } |
| mTrafficPoller.removeClient(msg.replyTo); |
| break; |
| } |
| case AsyncChannel.CMD_CHANNEL_FULL_CONNECTION: { |
| AsyncChannel ac = new AsyncChannel(); |
| ac.connect(mContext, this, msg.replyTo); |
| break; |
| } |
| /* Client commands are forwarded to state machine */ |
| case WifiManager.CONNECT_NETWORK: |
| case WifiManager.SAVE_NETWORK: { |
| WifiConfiguration config = (WifiConfiguration) msg.obj; |
| int networkId = msg.arg1; |
| if (msg.what == WifiManager.SAVE_NETWORK) { |
| if (config != null) { |
| if (config.networkId == WifiConfiguration.INVALID_NETWORK_ID) { |
| config.creatorUid = Binder.getCallingUid(); |
| } else { |
| config.lastUpdateUid = Binder.getCallingUid(); |
| } |
| } |
| Slog.e("WiFiServiceImpl ", "SAVE" |
| + " nid=" + Integer.toString(networkId) |
| + " uid=" + Integer.toString(config.creatorUid) |
| + "/" + Integer.toString(config.lastUpdateUid)); |
| } |
| if (msg.what == WifiManager.CONNECT_NETWORK) { |
| if (config != null) { |
| if (config.networkId == WifiConfiguration.INVALID_NETWORK_ID) { |
| config.creatorUid = Binder.getCallingUid(); |
| } else { |
| config.lastUpdateUid = Binder.getCallingUid(); |
| } |
| } |
| Slog.e("WiFiServiceImpl ", "CONNECT " |
| + " nid=" + Integer.toString(networkId) |
| + " uid=" + Binder.getCallingUid()); |
| } |
| if (config != null && config.isValid()) { |
| if (DBG) Slog.d(TAG, "Connect with config" + config); |
| mWifiStateMachine.sendMessage(Message.obtain(msg)); |
| } else if (config == null |
| && networkId != WifiConfiguration.INVALID_NETWORK_ID) { |
| if (DBG) Slog.d(TAG, "Connect with networkId" + networkId); |
| mWifiStateMachine.sendMessage(Message.obtain(msg)); |
| } else { |
| Slog.e(TAG, "ClientHandler.handleMessage ignoring invalid msg=" + msg); |
| if (msg.what == WifiManager.CONNECT_NETWORK) { |
| replyFailed(msg, WifiManager.CONNECT_NETWORK_FAILED, |
| WifiManager.INVALID_ARGS); |
| } else { |
| replyFailed(msg, WifiManager.SAVE_NETWORK_FAILED, |
| WifiManager.INVALID_ARGS); |
| } |
| } |
| break; |
| } |
| case WifiManager.FORGET_NETWORK: |
| if (isOwner(msg.sendingUid)) { |
| mWifiStateMachine.sendMessage(Message.obtain(msg)); |
| } else { |
| Slog.e(TAG, "Forget is not authorized for user"); |
| replyFailed(msg, WifiManager.FORGET_NETWORK_FAILED, |
| WifiManager.NOT_AUTHORIZED); |
| } |
| break; |
| case WifiManager.START_WPS: |
| case WifiManager.CANCEL_WPS: |
| case WifiManager.DISABLE_NETWORK: |
| case WifiManager.RSSI_PKTCNT_FETCH: { |
| mWifiStateMachine.sendMessage(Message.obtain(msg)); |
| break; |
| } |
| default: { |
| Slog.d(TAG, "ClientHandler.handleMessage ignoring msg=" + msg); |
| break; |
| } |
| } |
| } |
| |
| private void replyFailed(Message msg, int what, int why) { |
| Message reply = msg.obtain(); |
| reply.what = what; |
| reply.arg1 = why; |
| try { |
| msg.replyTo.send(reply); |
| } catch (RemoteException e) { |
| // There's not much we can do if reply can't be sent! |
| } |
| } |
| } |
| private ClientHandler mClientHandler; |
| |
| /** |
| * Handles interaction with WifiStateMachine |
| */ |
| private class WifiStateMachineHandler extends Handler { |
| private AsyncChannel mWsmChannel; |
| |
| WifiStateMachineHandler(android.os.Looper looper) { |
| super(looper); |
| mWsmChannel = new AsyncChannel(); |
| mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { |
| if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { |
| mWifiStateMachineChannel = mWsmChannel; |
| } else { |
| Slog.e(TAG, "WifiStateMachine connection failure, error=" + msg.arg1); |
| mWifiStateMachineChannel = null; |
| } |
| break; |
| } |
| case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { |
| Slog.e(TAG, "WifiStateMachine channel lost, msg.arg1 =" + msg.arg1); |
| mWifiStateMachineChannel = null; |
| //Re-establish connection to state machine |
| mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); |
| break; |
| } |
| default: { |
| Slog.d(TAG, "WifiStateMachineHandler.handleMessage ignoring msg=" + msg); |
| break; |
| } |
| } |
| } |
| } |
| |
| WifiStateMachineHandler mWifiStateMachineHandler; |
| |
| private WifiWatchdogStateMachine mWifiWatchdogStateMachine; |
| |
| private WifiController mWifiController; |
| |
| public WifiServiceImpl(Context context) { |
| mContext = context; |
| |
| mInterfaceName = SystemProperties.get("wifi.interface", "wlan0"); |
| |
| mTrafficPoller = new WifiTrafficPoller(mContext, mInterfaceName); |
| mWifiStateMachine = new WifiStateMachine(mContext, mInterfaceName, mTrafficPoller); |
| mWifiStateMachine.enableRssiPolling(true); |
| mBatteryStats = BatteryStatsService.getService(); |
| mAppOps = (AppOpsManager)context.getSystemService(Context.APP_OPS_SERVICE); |
| |
| mNotificationController = new WifiNotificationController(mContext, mWifiStateMachine); |
| mSettingsStore = new WifiSettingsStore(mContext); |
| |
| HandlerThread wifiThread = new HandlerThread("WifiService"); |
| wifiThread.start(); |
| mClientHandler = new ClientHandler(wifiThread.getLooper()); |
| mWifiStateMachineHandler = new WifiStateMachineHandler(wifiThread.getLooper()); |
| mWifiController = new WifiController(mContext, this, wifiThread.getLooper()); |
| |
| mBatchedScanSupported = mContext.getResources().getBoolean( |
| R.bool.config_wifi_batched_scan_supported); |
| } |
| |
| |
| /** |
| * Check if Wi-Fi needs to be enabled and start |
| * if needed |
| * |
| * This function is used only at boot time |
| */ |
| public void checkAndStartWifi() { |
| /* Check if wi-fi needs to be enabled */ |
| boolean wifiEnabled = mSettingsStore.isWifiToggleEnabled(); |
| Slog.i(TAG, "WifiService starting up with Wi-Fi " + |
| (wifiEnabled ? "enabled" : "disabled")); |
| |
| registerForScanModeChange(); |
| mContext.registerReceiver( |
| new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (mSettingsStore.handleAirplaneModeToggled()) { |
| mWifiController.sendMessage(CMD_AIRPLANE_TOGGLED); |
| } |
| } |
| }, |
| new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED)); |
| |
| // Adding optimizations of only receiving broadcasts when wifi is enabled |
| // can result in race conditions when apps toggle wifi in the background |
| // without active user involvement. Always receive broadcasts. |
| registerForBroadcasts(); |
| |
| mWifiController.start(); |
| |
| // If we are already disabled (could be due to airplane mode), avoid changing persist |
| // state here |
| if (wifiEnabled) setWifiEnabled(wifiEnabled); |
| |
| mWifiWatchdogStateMachine = WifiWatchdogStateMachine. |
| makeWifiWatchdogStateMachine(mContext, mWifiStateMachine.getMessenger()); |
| } |
| |
| /** |
| * see {@link android.net.wifi.WifiManager#pingSupplicant()} |
| * @return {@code true} if the operation succeeds, {@code false} otherwise |
| */ |
| public boolean pingSupplicant() { |
| enforceAccessPermission(); |
| if (mWifiStateMachineChannel != null) { |
| return mWifiStateMachine.syncPingSupplicant(mWifiStateMachineChannel); |
| } else { |
| Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); |
| return false; |
| } |
| } |
| |
| /** |
| * see {@link android.net.wifi.WifiManager#getChannelList} |
| */ |
| public List<WifiChannel> getChannelList() { |
| enforceAccessPermission(); |
| if (mWifiStateMachineChannel != null) { |
| return mWifiStateMachine.syncGetChannelList(mWifiStateMachineChannel); |
| } else { |
| Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); |
| return null; |
| } |
| } |
| |
| /** |
| * see {@link android.net.wifi.WifiManager#startScan} |
| * and {@link android.net.wifi.WifiManager#startCustomizedScan} |
| * |
| * @param settings If null, use default parameter, i.e. full scan. |
| * @param workSource If null, all blame is given to the calling uid. |
| */ |
| public void startScan(ScanSettings settings, WorkSource workSource) { |
| enforceChangePermission(); |
| if (settings != null) { |
| // TODO: should be removed once the startCustomizedScan API is opened up |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.LOCATION_HARDWARE, |
| "LocationHardware"); |
| settings = new ScanSettings(settings); |
| if (!settings.isValid()) { |
| Slog.e(TAG, "invalid scan setting"); |
| return; |
| } |
| } |
| if (workSource != null) { |
| enforceWorkSourcePermission(); |
| // WifiManager currently doesn't use names, so need to clear names out of the |
| // supplied WorkSource to allow future WorkSource combining. |
| workSource.clearNames(); |
| } |
| mWifiStateMachine.startScan(Binder.getCallingUid(), scanRequestCounter++, |
| settings, workSource); |
| } |
| |
| private class BatchedScanRequest extends DeathRecipient { |
| final BatchedScanSettings settings; |
| final int uid; |
| final int pid; |
| final WorkSource workSource; |
| |
| BatchedScanRequest(BatchedScanSettings settings, IBinder binder, WorkSource ws) { |
| super(0, null, binder, null); |
| this.settings = settings; |
| this.uid = getCallingUid(); |
| this.pid = getCallingPid(); |
| workSource = ws; |
| } |
| public void binderDied() { |
| stopBatchedScan(settings, uid, pid); |
| } |
| public String toString() { |
| return "BatchedScanRequest{settings=" + settings + ", binder=" + mBinder + "}"; |
| } |
| |
| public boolean isSameApp(int uid, int pid) { |
| return (this.uid == uid && this.pid == pid); |
| } |
| } |
| |
| private final List<BatchedScanRequest> mBatchedScanners = new ArrayList<BatchedScanRequest>(); |
| |
| public boolean isBatchedScanSupported() { |
| return mBatchedScanSupported; |
| } |
| |
| public void pollBatchedScan() { |
| enforceChangePermission(); |
| if (mBatchedScanSupported == false) return; |
| mWifiStateMachine.requestBatchedScanPoll(); |
| } |
| |
| public String getWpsNfcConfigurationToken(int netId) { |
| enforceConnectivityInternalPermission(); |
| return mWifiStateMachine.syncGetWpsNfcConfigurationToken(netId); |
| } |
| |
| /** |
| * see {@link android.net.wifi.WifiManager#requestBatchedScan()} |
| */ |
| public boolean requestBatchedScan(BatchedScanSettings requested, IBinder binder, |
| WorkSource workSource) { |
| enforceChangePermission(); |
| if (workSource != null) { |
| enforceWorkSourcePermission(); |
| // WifiManager currently doesn't use names, so need to clear names out of the |
| // supplied WorkSource to allow future WorkSource combining. |
| workSource.clearNames(); |
| } |
| if (mBatchedScanSupported == false) return false; |
| requested = new BatchedScanSettings(requested); |
| if (requested.isInvalid()) return false; |
| BatchedScanRequest r = new BatchedScanRequest(requested, binder, workSource); |
| synchronized(mBatchedScanners) { |
| mBatchedScanners.add(r); |
| resolveBatchedScannersLocked(); |
| } |
| return true; |
| } |
| |
| public List<BatchedScanResult> getBatchedScanResults(String callingPackage) { |
| enforceAccessPermission(); |
| if (mBatchedScanSupported == false) return new ArrayList<BatchedScanResult>(); |
| int uid = Binder.getCallingUid(); |
| int userId = UserHandle.getCallingUserId(); |
| long ident = Binder.clearCallingIdentity(); |
| try { |
| if (mAppOps.noteOp(AppOpsManager.OP_WIFI_SCAN, uid, callingPackage) |
| != AppOpsManager.MODE_ALLOWED) { |
| return new ArrayList<BatchedScanResult>(); |
| } |
| if (!isCurrentProfile(userId)) { |
| return new ArrayList<BatchedScanResult>(); |
| } |
| return mWifiStateMachine.syncGetBatchedScanResultsList(); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| public void stopBatchedScan(BatchedScanSettings settings) { |
| enforceChangePermission(); |
| if (mBatchedScanSupported == false) return; |
| stopBatchedScan(settings, getCallingUid(), getCallingPid()); |
| } |
| |
| private void stopBatchedScan(BatchedScanSettings settings, int uid, int pid) { |
| ArrayList<BatchedScanRequest> found = new ArrayList<BatchedScanRequest>(); |
| synchronized(mBatchedScanners) { |
| for (BatchedScanRequest r : mBatchedScanners) { |
| if (r.isSameApp(uid, pid) && (settings == null || settings.equals(r.settings))) { |
| found.add(r); |
| if (settings != null) break; |
| } |
| } |
| for (BatchedScanRequest r : found) { |
| mBatchedScanners.remove(r); |
| } |
| if (found.size() != 0) { |
| resolveBatchedScannersLocked(); |
| } |
| } |
| } |
| |
| private void resolveBatchedScannersLocked() { |
| BatchedScanSettings setting = new BatchedScanSettings(); |
| WorkSource responsibleWorkSource = null; |
| int responsibleUid = 0; |
| double responsibleCsph = 0; // Channel Scans Per Hour |
| |
| if (mBatchedScanners.size() == 0) { |
| mWifiStateMachine.setBatchedScanSettings(null, 0, 0, null); |
| return; |
| } |
| for (BatchedScanRequest r : mBatchedScanners) { |
| BatchedScanSettings s = r.settings; |
| |
| // evaluate responsibility |
| int currentChannelCount; |
| int currentScanInterval; |
| double currentCsph; |
| |
| if (s.channelSet == null || s.channelSet.isEmpty()) { |
| // all channels - 11 B and 9 A channels roughly. |
| currentChannelCount = 9 + 11; |
| } else { |
| currentChannelCount = s.channelSet.size(); |
| // these are rough est - no real need to correct for reg-domain; |
| if (s.channelSet.contains("A")) currentChannelCount += (9 - 1); |
| if (s.channelSet.contains("B")) currentChannelCount += (11 - 1); |
| |
| } |
| if (s.scanIntervalSec == BatchedScanSettings.UNSPECIFIED) { |
| currentScanInterval = BatchedScanSettings.DEFAULT_INTERVAL_SEC; |
| } else { |
| currentScanInterval = s.scanIntervalSec; |
| } |
| currentCsph = 60 * 60 * currentChannelCount / currentScanInterval; |
| |
| if (currentCsph > responsibleCsph) { |
| responsibleUid = r.uid; |
| responsibleWorkSource = r.workSource; |
| responsibleCsph = currentCsph; |
| } |
| |
| if (s.maxScansPerBatch != BatchedScanSettings.UNSPECIFIED && |
| s.maxScansPerBatch < setting.maxScansPerBatch) { |
| setting.maxScansPerBatch = s.maxScansPerBatch; |
| } |
| if (s.maxApPerScan != BatchedScanSettings.UNSPECIFIED && |
| (setting.maxApPerScan == BatchedScanSettings.UNSPECIFIED || |
| s.maxApPerScan > setting.maxApPerScan)) { |
| setting.maxApPerScan = s.maxApPerScan; |
| } |
| if (s.scanIntervalSec != BatchedScanSettings.UNSPECIFIED && |
| s.scanIntervalSec < setting.scanIntervalSec) { |
| setting.scanIntervalSec = s.scanIntervalSec; |
| } |
| if (s.maxApForDistance != BatchedScanSettings.UNSPECIFIED && |
| (setting.maxApForDistance == BatchedScanSettings.UNSPECIFIED || |
| s.maxApForDistance > setting.maxApForDistance)) { |
| setting.maxApForDistance = s.maxApForDistance; |
| } |
| if (s.channelSet != null && s.channelSet.size() != 0) { |
| if (setting.channelSet == null || setting.channelSet.size() != 0) { |
| if (setting.channelSet == null) setting.channelSet = new ArrayList<String>(); |
| for (String i : s.channelSet) { |
| if (setting.channelSet.contains(i) == false) setting.channelSet.add(i); |
| } |
| } // else, ignore the constraint - we already use all channels |
| } else { |
| if (setting.channelSet == null || setting.channelSet.size() != 0) { |
| setting.channelSet = new ArrayList<String>(); |
| } |
| } |
| } |
| |
| setting.constrain(); |
| mWifiStateMachine.setBatchedScanSettings(setting, responsibleUid, (int)responsibleCsph, |
| responsibleWorkSource); |
| } |
| |
| private void enforceAccessPermission() { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.ACCESS_WIFI_STATE, |
| "WifiService"); |
| } |
| |
| private void enforceChangePermission() { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.CHANGE_WIFI_STATE, |
| "WifiService"); |
| |
| } |
| |
| private void enforceReadCredentialPermission() { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.READ_WIFI_CREDENTIAL, |
| "WifiService"); |
| } |
| |
| private void enforceWorkSourcePermission() { |
| mContext.enforceCallingPermission(android.Manifest.permission.UPDATE_DEVICE_STATS, |
| "WifiService"); |
| |
| } |
| |
| private void enforceMulticastChangePermission() { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_WIFI_MULTICAST_STATE, |
| "WifiService"); |
| } |
| |
| private void enforceConnectivityInternalPermission() { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CONNECTIVITY_INTERNAL, |
| "ConnectivityService"); |
| } |
| |
| /** |
| * 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(); |
| UserManager um = UserManager.get(mContext); |
| if (um.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { |
| throw new SecurityException("DISALLOW_CONFIG_TETHERING is enabled for this user."); |
| } |
| // null wifiConfig is a meaningful input for CMD_SET_AP |
| if (wifiConfig == null || wifiConfig.isValid()) { |
| mWifiController.obtainMessage(CMD_SET_AP, enabled ? 1 : 0, 0, wifiConfig).sendToTarget(); |
| } else { |
| Slog.e(TAG, "Invalid WifiConfiguration"); |
| } |
| } |
| |
| /** |
| * 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; |
| if (wifiConfig.isValid()) { |
| mWifiStateMachine.setWifiApConfiguration(wifiConfig); |
| } else { |
| Slog.e(TAG, "Invalid WifiConfiguration"); |
| } |
| } |
| |
| /** |
| * @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#getSupportedFeatures} |
| */ |
| public int getSupportedFeatures() { |
| enforceAccessPermission(); |
| if (mWifiStateMachineChannel != null) { |
| return mWifiStateMachine.syncGetSupportedFeatures(mWifiStateMachineChannel); |
| } else { |
| Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); |
| return 0; |
| } |
| } |
| |
| /** |
| * see {@link android.net.wifi.WifiAdapter#reportActivityInfo} |
| */ |
| public WifiActivityEnergyInfo reportActivityInfo() { |
| enforceAccessPermission(); |
| WifiLinkLayerStats stats; |
| WifiActivityEnergyInfo energyInfo = null; |
| if (mWifiStateMachineChannel != null) { |
| stats = mWifiStateMachine.syncGetLinkLayerStats(mWifiStateMachineChannel); |
| if (stats != null) { |
| // Convert the LinkLayerStats into EnergyActivity |
| energyInfo = new WifiActivityEnergyInfo( |
| WifiActivityEnergyInfo.STACK_STATE_STATE_IDLE, stats.tx_time, |
| stats.rx_time, stats.on_time - stats.tx_time - stats.rx_time, |
| 0 /* TBD */); |
| } |
| return energyInfo; |
| } else { |
| Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); |
| return null; |
| } |
| } |
| |
| /** |
| * see {@link android.net.wifi.WifiManager#getConfiguredNetworks()} |
| * @return the list of configured networks |
| */ |
| public List<WifiConfiguration> getConfiguredNetworks() { |
| enforceAccessPermission(); |
| if (mWifiStateMachineChannel != null) { |
| return mWifiStateMachine.syncGetConfiguredNetworks(Binder.getCallingUid(), |
| mWifiStateMachineChannel); |
| } else { |
| Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); |
| return null; |
| } |
| } |
| |
| /** |
| * see {@link android.net.wifi.WifiManager#getPrivilegedConfiguredNetworks()} |
| * @return the list of configured networks with real preSharedKey |
| */ |
| public List<WifiConfiguration> getPrivilegedConfiguredNetworks() { |
| enforceReadCredentialPermission(); |
| enforceAccessPermission(); |
| if (mWifiStateMachineChannel != null) { |
| return mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(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 (config.isValid()) { |
| //TODO: pass the Uid the WifiStateMachine as a message parameter |
| Slog.e("addOrUpdateNetwork", " uid = " + Integer.toString(Binder.getCallingUid()) |
| + " SSID " + config.SSID |
| + " nid=" + Integer.toString(config.networkId)); |
| if (config.networkId == WifiConfiguration.INVALID_NETWORK_ID) { |
| config.creatorUid = Binder.getCallingUid(); |
| } else { |
| config.lastUpdateUid = Binder.getCallingUid(); |
| } |
| if (mWifiStateMachineChannel != null) { |
| return mWifiStateMachine.syncAddOrUpdateNetwork(mWifiStateMachineChannel, config); |
| } else { |
| Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); |
| return -1; |
| } |
| } else { |
| Slog.e(TAG, "bad network configuration"); |
| 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 (!isOwner(Binder.getCallingUid())) { |
| Slog.e(TAG, "Remove is not authorized for user"); |
| return false; |
| } |
| |
| 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>(); |
| } |
| if (!isCurrentProfile(userId)) { |
| return new ArrayList<ScanResult>(); |
| } |
| return mWifiStateMachine.syncGetScanResultsList(); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| /** |
| * Returns true if the calling user is the current one or a profile of the |
| * current user.. |
| */ |
| private boolean isCurrentProfile(int userId) { |
| int currentUser = ActivityManager.getCurrentUser(); |
| if (userId == currentUser) { |
| return true; |
| } |
| List<UserInfo> profiles = UserManager.get(mContext).getProfiles(currentUser); |
| for (UserInfo user : profiles) { |
| if (userId == user.id) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Returns true if uid is an application running under the owner or a profile of the owner. |
| * |
| * Note: Should not be called if identity is cleared. |
| */ |
| private boolean isOwner(int uid) { |
| long ident = Binder.clearCallingIdentity(); |
| int userId = UserHandle.getUserId(uid); |
| try { |
| int ownerUser = UserHandle.USER_OWNER; |
| if (userId == ownerUser) { |
| return true; |
| } |
| List<UserInfo> profiles = UserManager.get(mContext).getProfiles(ownerUser); |
| for (UserInfo profile : profiles) { |
| if (userId == profile.id) { |
| return true; |
| } |
| } |
| return false; |
| } |
| 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); |
| enforceConnectivityInternalPermission(); |
| 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(); |
| |
| DhcpInfo info = new DhcpInfo(); |
| |
| if (dhcpResults.ipAddress != null && |
| dhcpResults.ipAddress.getAddress() instanceof Inet4Address) { |
| info.ipAddress = NetworkUtils.inetAddressToInt((Inet4Address) dhcpResults.ipAddress.getAddress()); |
| } |
| |
| if (dhcpResults.gateway != null) { |
| info.gateway = NetworkUtils.inetAddressToInt((Inet4Address) dhcpResults.gateway); |
| } |
| |
| int dnsFound = 0; |
| for (InetAddress dns : dhcpResults.dnsServers) { |
| 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(); |
| } |
| |
| /** |
| * 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) { |
| if (remoteAddress == null) { |
| throw new IllegalArgumentException("remoteAddress cannot be null"); |
| } |
| |
| TdlsTaskParams params = new TdlsTaskParams(); |
| params.remoteIpAddress = remoteAddress; |
| params.enable = enable; |
| new TdlsTask().execute(params); |
| } |
| |
| |
| public void enableTdlsWithMacAddress(String remoteMacAddress, boolean enable) { |
| if (remoteMacAddress == null) { |
| throw new IllegalArgumentException("remoteMacAddress cannot be null"); |
| } |
| |
| 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 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_USER_PRESENT)) { |
| mWifiController.sendMessage(CMD_USER_PRESENT); |
| } 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_USER_PRESENT); |
| 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); |
| } |
| } |
| |
| public WifiMonitor getWifiMonitor() { |
| return mWifiStateMachine.getWifiMonitor(); |
| } |
| |
| public void enableVerboseLogging(int verbose) { |
| enforceAccessPermission(); |
| mWifiStateMachine.enableVerboseLogging(verbose); |
| } |
| |
| public int getVerboseLoggingLevel() { |
| enforceAccessPermission(); |
| return mWifiStateMachine.getVerboseLoggingLevel(); |
| } |
| |
| public void enableAggressiveHandover(int enabled) { |
| enforceAccessPermission(); |
| mWifiStateMachine.enableAggressiveHandover(enabled); |
| } |
| |
| public int getAggressiveHandover() { |
| enforceAccessPermission(); |
| return mWifiStateMachine.getAggressiveHandover(); |
| } |
| |
| public void setAllowScansWithTraffic(int enabled) { |
| enforceAccessPermission(); |
| mWifiStateMachine.setAllowScansWithTraffic(enabled); |
| } |
| |
| public int getAllowScansWithTraffic() { |
| enforceAccessPermission(); |
| return mWifiStateMachine.getAllowScansWithTraffic(); |
| } |
| |
| /* Return the Wifi Connection statistics object */ |
| public WifiConnectionStatistics getConnectionStatistics() { |
| enforceAccessPermission(); |
| enforceReadCredentialPermission(); |
| if (mWifiStateMachineChannel != null) { |
| return mWifiStateMachine.syncGetConnectionStatistics(mWifiStateMachineChannel); |
| } else { |
| Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); |
| return null; |
| } |
| } |
| } |
