/* * 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 static android.net.wifi.WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE; import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_FAILURE_REASON; import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_INTERFACE_NAME; import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_MODE; import static android.net.wifi.WifiManager.EXTRA_WIFI_AP_STATE; import static android.net.wifi.WifiManager.LocalOnlyHotspotCallback.ERROR_GENERIC; import static android.net.wifi.WifiManager.LocalOnlyHotspotCallback.ERROR_NO_CHANNEL; import static android.net.wifi.WifiManager.SAP_START_FAILURE_NO_CHANNEL; import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; import static com.android.server.wifi.LocalOnlyHotspotRequestInfo.HOTSPOT_NO_ERROR; 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_CALL_STATE_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; import android.Manifest; import android.app.ActivityManager; import android.app.ActivityManager.RunningAppProcessInfo; 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.ApplicationInfo; import android.content.pm.PackageManager; import android.content.pm.ParceledListSlice; import android.database.ContentObserver; import android.net.DhcpInfo; import android.net.DhcpResults; import android.net.IpConfiguration; import android.net.Network; import android.net.NetworkUtils; import android.net.StaticIpConfiguration; import android.net.Uri; import android.net.ip.IpManager; import android.net.wifi.IWifiManager; import android.net.wifi.ScanResult; import android.net.wifi.ScanSettings; import android.net.wifi.WifiActivityEnergyInfo; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiConnectionStatistics; import android.net.wifi.WifiInfo; import android.net.wifi.WifiLinkLayerStats; import android.net.wifi.WifiManager; import android.net.wifi.WifiManager.LocalOnlyHotspotCallback; import android.net.wifi.WifiScanner; import android.net.wifi.hotspot2.PasspointConfiguration; import android.os.AsyncTask; import android.os.BatteryStats; import android.os.Binder; import android.os.Build; import android.os.Bundle; import android.os.HandlerThread; import android.os.IBinder; import android.os.Looper; import android.os.Message; import android.os.Messenger; import android.os.PowerManager; import android.os.Process; import android.os.RemoteException; import android.os.ResultReceiver; import android.os.UserHandle; import android.os.UserManager; import android.os.WorkSource; import android.provider.Settings; import android.util.ArrayMap; import android.util.ArraySet; import android.util.Log; import android.util.Slog; import com.android.internal.annotations.GuardedBy; import com.android.internal.annotations.VisibleForTesting; import com.android.internal.telephony.IccCardConstants; import com.android.internal.telephony.PhoneConstants; import com.android.internal.telephony.TelephonyIntents; import com.android.internal.util.AsyncChannel; import com.android.server.wifi.hotspot2.PasspointProvider; import com.android.server.wifi.util.WifiHandler; import com.android.server.wifi.util.WifiPermissionsUtil; import java.io.BufferedReader; import java.io.FileDescriptor; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.io.PrintWriter; import java.net.Inet4Address; import java.net.InetAddress; import java.security.GeneralSecurityException; import java.security.KeyStore; import java.security.cert.CertPath; import java.security.cert.CertPathValidator; import java.security.cert.CertificateFactory; import java.security.cert.PKIXParameters; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.concurrent.ConcurrentHashMap; /** * WifiService handles remote WiFi operation requests by implementing * the IWifiManager interface. * * @hide */ public class WifiServiceImpl extends IWifiManager.Stub { private static final String TAG = "WifiService"; private static final boolean DBG = true; private static final boolean VDBG = false; // Dumpsys argument to enable/disable disconnect on IP reachability failures. private static final String DUMP_ARG_SET_IPREACH_DISCONNECT = "set-ipreach-disconnect"; private static final String DUMP_ARG_SET_IPREACH_DISCONNECT_ENABLED = "enabled"; private static final String DUMP_ARG_SET_IPREACH_DISCONNECT_DISABLED = "disabled"; // Default scan background throttling interval if not overriden in settings private static final long DEFAULT_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS = 30 * 60 * 1000; // Apps with importance higher than this value is considered as background app. private static final int BACKGROUND_IMPORTANCE_CUTOFF = RunningAppProcessInfo.IMPORTANCE_FOREGROUND_SERVICE; final WifiStateMachine mWifiStateMachine; private final Context mContext; private final FrameworkFacade mFacade; private final Clock mClock; private final ArraySet mBackgroundThrottlePackageWhitelist = new ArraySet<>(); private final PowerManager mPowerManager; private final AppOpsManager mAppOps; private final UserManager mUserManager; private final ActivityManager mActivityManager; private final WifiCountryCode mCountryCode; private long mBackgroundThrottleInterval; // 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; /* Logs connection events and some general router and scan stats */ private final WifiMetrics mWifiMetrics; /* Manages affiliated certificates for current user */ private final WifiCertManager mCertManager; private final WifiInjector mWifiInjector; /* Backup/Restore Module */ private final WifiBackupRestore mWifiBackupRestore; // Map of package name of background scan apps and last scan timestamp. private final ArrayMap mLastScanTimestamps; private WifiScanner mWifiScanner; private WifiLog mLog; /** * Asynchronous channel to WifiStateMachine */ private AsyncChannel mWifiStateMachineChannel; private final boolean mPermissionReviewRequired; private final FrameworkFacade mFrameworkFacade; private WifiPermissionsUtil mWifiPermissionsUtil; @GuardedBy("mLocalOnlyHotspotRequests") private final HashMap mLocalOnlyHotspotRequests; @GuardedBy("mLocalOnlyHotspotRequests") private WifiConfiguration mLocalOnlyHotspotConfig = null; @GuardedBy("mLocalOnlyHotspotRequests") private final ConcurrentHashMap mIfaceIpModes; /** * Callback for use with LocalOnlyHotspot to unregister requesting applications upon death. * * @hide */ public final class LocalOnlyRequestorCallback implements LocalOnlyHotspotRequestInfo.RequestingApplicationDeathCallback { /** * Called with requesting app has died. */ @Override public void onLocalOnlyHotspotRequestorDeath(LocalOnlyHotspotRequestInfo requestor) { unregisterCallingAppAndStopLocalOnlyHotspot(requestor); }; } /** * Handles client connections */ private class ClientHandler extends WifiHandler { ClientHandler(String tag, Looper looper) { super(tag, looper); } @Override public void handleMessage(Message msg) { super.handleMessage(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 = mFrameworkFacade.makeWifiAsyncChannel(TAG); ac.connect(mContext, this, msg.replyTo); break; } case WifiManager.CONNECT_NETWORK: { WifiConfiguration config = (WifiConfiguration) msg.obj; int networkId = msg.arg1; Slog.d("WiFiServiceImpl ", "CONNECT " + " nid=" + Integer.toString(networkId) + " uid=" + msg.sendingUid + " name=" + mContext.getPackageManager().getNameForUid(msg.sendingUid)); if (config != null && isValid(config)) { if (DBG) Slog.d(TAG, "Connect with config " + config); /* Command is forwarded to state machine */ 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); replyFailed(msg, WifiManager.CONNECT_NETWORK_FAILED, WifiManager.INVALID_ARGS); } break; } case WifiManager.SAVE_NETWORK: { WifiConfiguration config = (WifiConfiguration) msg.obj; int networkId = msg.arg1; Slog.d("WiFiServiceImpl ", "SAVE" + " nid=" + Integer.toString(networkId) + " uid=" + msg.sendingUid + " name=" + mContext.getPackageManager().getNameForUid(msg.sendingUid)); if (config != null && isValid(config)) { if (DBG) Slog.d(TAG, "Save network with config " + config); /* Command is forwarded to state machine */ mWifiStateMachine.sendMessage(Message.obtain(msg)); } else { Slog.e(TAG, "ClientHandler.handleMessage ignoring invalid msg=" + msg); replyFailed(msg, WifiManager.SAVE_NETWORK_FAILED, WifiManager.INVALID_ARGS); } break; } case WifiManager.FORGET_NETWORK: mWifiStateMachine.sendMessage(Message.obtain(msg)); 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) { if (msg.replyTo == null) return; Message reply = Message.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 WifiHandler { private AsyncChannel mWsmChannel; WifiStateMachineHandler(String tag, Looper looper, AsyncChannel asyncChannel) { super(tag, looper); mWsmChannel = asyncChannel; mWsmChannel.connect(mContext, this, mWifiStateMachine.getHandler()); } @Override public void handleMessage(Message msg) { super.handleMessage(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 WifiController mWifiController; private final WifiLockManager mWifiLockManager; private final WifiMulticastLockManager mWifiMulticastLockManager; public WifiServiceImpl(Context context, WifiInjector wifiInjector, AsyncChannel asyncChannel) { mContext = context; mWifiInjector = wifiInjector; mClock = wifiInjector.getClock(); mFacade = mWifiInjector.getFrameworkFacade(); mWifiMetrics = mWifiInjector.getWifiMetrics(); mTrafficPoller = mWifiInjector.getWifiTrafficPoller(); mUserManager = mWifiInjector.getUserManager(); mCountryCode = mWifiInjector.getWifiCountryCode(); mWifiStateMachine = mWifiInjector.getWifiStateMachine(); mWifiStateMachine.enableRssiPolling(true); mSettingsStore = mWifiInjector.getWifiSettingsStore(); mPowerManager = mContext.getSystemService(PowerManager.class); mAppOps = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); mActivityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); mCertManager = mWifiInjector.getWifiCertManager(); mNotificationController = mWifiInjector.getWifiNotificationController(); mWifiLockManager = mWifiInjector.getWifiLockManager(); mWifiMulticastLockManager = mWifiInjector.getWifiMulticastLockManager(); HandlerThread wifiServiceHandlerThread = mWifiInjector.getWifiServiceHandlerThread(); mClientHandler = new ClientHandler(TAG, wifiServiceHandlerThread.getLooper()); mWifiStateMachineHandler = new WifiStateMachineHandler(TAG, wifiServiceHandlerThread.getLooper(), asyncChannel); mWifiController = mWifiInjector.getWifiController(); mWifiBackupRestore = mWifiInjector.getWifiBackupRestore(); mPermissionReviewRequired = Build.PERMISSIONS_REVIEW_REQUIRED || context.getResources().getBoolean( com.android.internal.R.bool.config_permissionReviewRequired); mWifiPermissionsUtil = mWifiInjector.getWifiPermissionsUtil(); mLog = mWifiInjector.makeLog(TAG); mFrameworkFacade = wifiInjector.getFrameworkFacade(); mLastScanTimestamps = new ArrayMap<>(); updateBackgroundThrottleInterval(); updateBackgroundThrottlingWhitelist(); mIfaceIpModes = new ConcurrentHashMap<>(); mLocalOnlyHotspotRequests = new HashMap<>(); enableVerboseLoggingInternal(getVerboseLoggingLevel()); } /** * Provide a way for unit tests to set valid log object in the WifiHandler * @param log WifiLog object to assign to the clientHandler */ @VisibleForTesting public void setWifiHandlerLogForTest(WifiLog log) { mClientHandler.setWifiLog(log); } /** * Check if we are ready to start wifi. * * First check if we will be restarting system services to decrypt the device. If the device is * not encrypted, check if Wi-Fi needs to be enabled and start if needed * * This function is used only at boot time. */ public void checkAndStartWifi() { // First check if we will end up restarting WifiService if (mFrameworkFacade.inStorageManagerCryptKeeperBounce()) { Log.d(TAG, "Device still encrypted. Need to restart SystemServer. Do not start wifi."); return; } // 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(); registerForBackgroundThrottleChanges(); mContext.registerReceiver( new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if (mSettingsStore.handleAirplaneModeToggled()) { mWifiController.sendMessage(CMD_AIRPLANE_TOGGLED); } if (mSettingsStore.isAirplaneModeOn()) { Log.d(TAG, "resetting country code because Airplane mode is ON"); mCountryCode.airplaneModeEnabled(); } } }, new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED)); mContext.registerReceiver( new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String state = intent.getStringExtra(IccCardConstants.INTENT_KEY_ICC_STATE); if (IccCardConstants.INTENT_VALUE_ICC_ABSENT.equals(state)) { Log.d(TAG, "resetting networks because SIM was removed"); mWifiStateMachine.resetSimAuthNetworks(false); Log.d(TAG, "resetting country code because SIM is removed"); mCountryCode.simCardRemoved(); } else if (IccCardConstants.INTENT_VALUE_ICC_LOADED.equals(state)) { Log.d(TAG, "resetting networks because SIM was loaded"); mWifiStateMachine.resetSimAuthNetworks(true); } } }, new IntentFilter(TelephonyIntents.ACTION_SIM_STATE_CHANGED)); mContext.registerReceiver( new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { final int currState = intent.getIntExtra(EXTRA_WIFI_AP_STATE, WIFI_AP_STATE_DISABLED); final int prevState = intent.getIntExtra(EXTRA_PREVIOUS_WIFI_AP_STATE, WIFI_AP_STATE_DISABLED); final int errorCode = intent.getIntExtra(EXTRA_WIFI_AP_FAILURE_REASON, HOTSPOT_NO_ERROR); final String ifaceName = intent.getStringExtra(EXTRA_WIFI_AP_INTERFACE_NAME); final int mode = intent.getIntExtra(EXTRA_WIFI_AP_MODE, WifiManager.IFACE_IP_MODE_UNSPECIFIED); handleWifiApStateChange(currState, prevState, errorCode, ifaceName, mode); } }, new IntentFilter(WifiManager.WIFI_AP_STATE_CHANGED_ACTION)); // 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(); registerForPackageOrUserRemoval(); mInIdleMode = mPowerManager.isDeviceIdleMode(); if (!mWifiStateMachine.syncInitialize(mWifiStateMachineChannel)) { Log.wtf(TAG, "Failed to initialize WifiStateMachine"); } mWifiController.start(); // If we are already disabled (could be due to airplane mode), avoid changing persist // state here if (wifiEnabled) { try { setWifiEnabled(mContext.getPackageName(), wifiEnabled); } catch (RemoteException e) { /* ignore - local call */ } } } public void handleUserSwitch(int userId) { mWifiStateMachine.handleUserSwitch(userId); } public void handleUserUnlock(int userId) { mWifiStateMachine.handleUserUnlock(userId); } public void handleUserStop(int userId) { mWifiStateMachine.handleUserStop(userId); } /** * 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. * @param packageName Package name of the app that requests wifi scan. */ @Override public void startScan(ScanSettings settings, WorkSource workSource, String packageName) { enforceChangePermission(); mLog.trace("startScan uid=%").c(Binder.getCallingUid()).flush(); // Check and throttle background apps for wifi scan. if (isRequestFromBackground(packageName)) { long lastScanMs = mLastScanTimestamps.getOrDefault(packageName, 0L); long elapsedRealtime = mClock.getElapsedSinceBootMillis(); if (lastScanMs != 0 && (elapsedRealtime - lastScanMs) < mBackgroundThrottleInterval) { sendFailedScanBroadcast(); return; } // Proceed with the scan request and record the time. mLastScanTimestamps.put(packageName, elapsedRealtime); } synchronized (this) { if (mWifiScanner == null) { mWifiScanner = mWifiInjector.getWifiScanner(); } if (mInIdleMode) { // Need to send an immediate scan result broadcast in case the // caller is waiting for a result .. // TODO: investigate if the logic to cancel scans when idle can move to // WifiScanningServiceImpl. This will 1 - clean up WifiServiceImpl and 2 - // avoid plumbing an awkward path to report a cancelled/failed scan. This will // be sent directly until b/31398592 is fixed. sendFailedScanBroadcast(); mScanPending = true; return; } } if (settings != null) { 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(); } if (workSource == null && Binder.getCallingUid() >= 0) { workSource = new WorkSource(Binder.getCallingUid()); } mWifiStateMachine.startScan(Binder.getCallingUid(), scanRequestCounter++, settings, workSource); } // Send a failed scan broadcast to indicate the current scan request failed. private void sendFailedScanBroadcast() { // clear calling identity to send broadcast long callingIdentity = Binder.clearCallingIdentity(); try { Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); intent.putExtra(WifiManager.EXTRA_RESULTS_UPDATED, false); mContext.sendBroadcastAsUser(intent, UserHandle.ALL); } finally { // restore calling identity Binder.restoreCallingIdentity(callingIdentity); } } // Check if the request comes from background. private boolean isRequestFromBackground(String packageName) { // Requests from system or wifi are not background. if (Binder.getCallingUid() == Process.SYSTEM_UID || Binder.getCallingUid() == Process.WIFI_UID) { return false; } mAppOps.checkPackage(Binder.getCallingUid(), packageName); if (mBackgroundThrottlePackageWhitelist.contains(packageName)) { return false; } // getPackageImportance requires PACKAGE_USAGE_STATS permission, so clearing the incoming // identify so the permission check can be done on system process where wifi runs in. long callingIdentity = Binder.clearCallingIdentity(); try { return mActivityManager.getPackageImportance(packageName) > BACKGROUND_IMPORTANCE_CUTOFF; } finally { Binder.restoreCallingIdentity(callingIdentity); } } @Override public String getCurrentNetworkWpsNfcConfigurationToken() { enforceConnectivityInternalPermission(); mLog.trace("getCurrentNetworkWpsNfcConfigurationToken uid=%") .c(Binder.getCallingUid()).flush(); // TODO Add private logging for netId b/33807876 return mWifiStateMachine.syncGetCurrentNetworkWpsNfcConfigurationToken(); } boolean mInIdleMode; boolean mScanPending; void handleIdleModeChanged() { boolean doScan = false; synchronized (this) { boolean idle = mPowerManager.isDeviceIdleMode(); if (mInIdleMode != idle) { mInIdleMode = idle; if (!idle) { if (mScanPending) { mScanPending = false; doScan = true; } } } } if (doScan) { // Someone requested a scan while we were idle; do a full scan now. // The package name doesn't matter as the request comes from System UID. startScan(null, null, ""); } } private void enforceNetworkSettingsPermission() { mContext.enforceCallingOrSelfPermission(android.Manifest.permission.NETWORK_SETTINGS, "WifiService"); } private void enforceNetworkStackPermission() { mContext.enforceCallingOrSelfPermission(android.Manifest.permission.NETWORK_STACK, "WifiService"); } 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 enforceLocationHardwarePermission() { mContext.enforceCallingOrSelfPermission(Manifest.permission.LOCATION_HARDWARE, "LocationHardware"); } 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"); } private void enforceLocationPermission(String pkgName, int uid) { mWifiPermissionsUtil.enforceLocationPermission(pkgName, uid); } private boolean checkNetworkSettingsPermission() { int result = mContext.checkCallingOrSelfPermission( android.Manifest.permission.NETWORK_SETTINGS); return result == PackageManager.PERMISSION_GRANTED; } /** * 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. */ @Override public synchronized boolean setWifiEnabled(String packageName, boolean enable) throws RemoteException { enforceChangePermission(); Slog.d(TAG, "setWifiEnabled: " + enable + " pid=" + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid() + ", package=" + packageName); mLog.trace("setWifiEnabled package=% uid=% enable=%").c(packageName) .c(Binder.getCallingUid()).c(enable).flush(); // If SoftAp is enabled, only Settings is allowed to toggle wifi boolean apEnabled = mWifiStateMachine.syncGetWifiApState() != WifiManager.WIFI_AP_STATE_DISABLED; boolean isFromSettings = checkNetworkSettingsPermission(); if (apEnabled && !isFromSettings) { mLog.trace("setWifiEnabled SoftAp not disabled: only Settings can enable wifi").flush(); return false; } /* * 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); } if (mPermissionReviewRequired) { final int wiFiEnabledState = getWifiEnabledState(); if (enable) { if (wiFiEnabledState == WifiManager.WIFI_STATE_DISABLING || wiFiEnabledState == WifiManager.WIFI_STATE_DISABLED) { if (startConsentUi(packageName, Binder.getCallingUid(), WifiManager.ACTION_REQUEST_ENABLE)) { return true; } } } else if (wiFiEnabledState == WifiManager.WIFI_STATE_ENABLING || wiFiEnabledState == WifiManager.WIFI_STATE_ENABLED) { if (startConsentUi(packageName, Binder.getCallingUid(), WifiManager.ACTION_REQUEST_DISABLE)) { return true; } } } 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} */ @Override public int getWifiEnabledState() { enforceAccessPermission(); mLog.trace("getWifiEnabledState uid=%").c(Binder.getCallingUid()).flush(); 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 */ @Override public void setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) { enforceChangePermission(); mWifiPermissionsUtil.enforceTetherChangePermission(mContext); mLog.trace("setWifiApEnabled uid=% enable=%").c(Binder.getCallingUid()).c(enabled).flush(); if (mUserManager.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 || isValid(wifiConfig)) { int mode = WifiManager.IFACE_IP_MODE_UNSPECIFIED; SoftApModeConfiguration softApConfig = new SoftApModeConfiguration(mode, wifiConfig); mWifiController.sendMessage(CMD_SET_AP, enabled ? 1 : 0, 0, softApConfig); } 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} */ @Override public int getWifiApEnabledState() { enforceAccessPermission(); mLog.trace("getWifiApEnabledState uid=%").c(Binder.getCallingUid()).flush(); return mWifiStateMachine.syncGetWifiApState(); } /** * see {@link android.net.wifi.WifiManager#updateInterfaceIpState(String, int)} * * The possible modes include: {@link WifiManager#IFACE_IP_MODE_TETHERED}, * {@link WifiManager#IFACE_IP_MODE_LOCAL_ONLY}, * {@link WifiManager#IFACE_IP_MODE_CONFIGURATION_ERROR} * * @param ifaceName String name of the updated interface * @param mode new operating mode of the interface * * @throws SecurityException if the caller does not have permission to call update */ @Override public void updateInterfaceIpState(String ifaceName, int mode) { // NETWORK_STACK is a signature only permission. enforceNetworkStackPermission(); // hand off the work to our handler thread mClientHandler.post(() -> { updateInterfaceIpStateInternal(ifaceName, mode); }); } private void updateInterfaceIpStateInternal(String ifaceName, int mode) { // update interface IP state related to tethering and hotspot synchronized (mLocalOnlyHotspotRequests) { // update the mode tracker here - we clear out state below Integer previousMode = WifiManager.IFACE_IP_MODE_UNSPECIFIED; if (ifaceName != null) { previousMode = mIfaceIpModes.put(ifaceName, mode); } Slog.d(TAG, "updateInterfaceIpState: ifaceName=" + ifaceName + " mode=" + mode + " previous mode= " + previousMode); switch (mode) { case WifiManager.IFACE_IP_MODE_LOCAL_ONLY: // first make sure we have registered requests.. otherwise clean up if (mLocalOnlyHotspotRequests.isEmpty()) { // we don't have requests... stop the hotspot stopSoftAp(); updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); return; } // LOHS is ready to go! Call our registered requestors! sendHotspotStartedMessageToAllLOHSRequestInfoEntriesLocked(); break; case WifiManager.IFACE_IP_MODE_TETHERED: // we have tethered an interface. we don't really act on this now other than if // we have LOHS requests, and this is an issue. return incompatible mode for // onFailed for the registered requestors since this can result from a race // between a tether request and a hotspot request (tethering wins). sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE); break; case WifiManager.IFACE_IP_MODE_CONFIGURATION_ERROR: // there was an error setting up the hotspot... trigger onFailed for the // registered LOHS requestors sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( LocalOnlyHotspotCallback.ERROR_GENERIC); updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); break; case WifiManager.IFACE_IP_MODE_UNSPECIFIED: if (ifaceName == null) { // interface name is null, this is due to softap teardown. clear all // entries for now. // TODO: Deal with individual interfaces when we receive updates for them mIfaceIpModes.clear(); return; } break; default: mLog.trace("updateInterfaceIpStateInternal: unknown mode %").c(mode).flush(); } } } /** * see {@link android.net.wifi.WifiManager#startSoftAp(WifiConfiguration)} * @param wifiConfig SSID, security and channel details as part of WifiConfiguration * @return {@code true} if softap start was triggered * @throws SecurityException if the caller does not have permission to start softap */ @Override public boolean startSoftAp(WifiConfiguration wifiConfig) { // NETWORK_STACK is a signature only permission. enforceNetworkStackPermission(); mLog.trace("startSoftAp uid=%").c(Binder.getCallingUid()).flush(); synchronized (mLocalOnlyHotspotRequests) { // If a tethering request comes in while we have LOHS running (or requested), call stop // for softap mode and restart softap with the tethering config. if (!mLocalOnlyHotspotRequests.isEmpty()) { stopSoftApInternal(); } return startSoftApInternal(wifiConfig, WifiManager.IFACE_IP_MODE_TETHERED); } } /** * Internal method to start softap mode. Callers of this method should have already checked * proper permissions beyond the NetworkStack permission. */ private boolean startSoftApInternal(WifiConfiguration wifiConfig, int mode) { mLog.trace("startSoftApInternal uid=% mode=%") .c(Binder.getCallingUid()).c(mode).flush(); // null wifiConfig is a meaningful input for CMD_SET_AP if (wifiConfig == null || isValid(wifiConfig)) { SoftApModeConfiguration softApConfig = new SoftApModeConfiguration(mode, wifiConfig); mWifiController.sendMessage(CMD_SET_AP, 1, 0, softApConfig); return true; } Slog.e(TAG, "Invalid WifiConfiguration"); return false; } /** * see {@link android.net.wifi.WifiManager#stopSoftAp()} * @return {@code true} if softap stop was triggered * @throws SecurityException if the caller does not have permission to stop softap */ @Override public boolean stopSoftAp() { // NETWORK_STACK is a signature only permission. enforceNetworkStackPermission(); // only permitted callers are allowed to this point - they must have gone through // connectivity service since this method is protected with the NETWORK_STACK PERMISSION mLog.trace("stopSoftAp uid=%").c(Binder.getCallingUid()).flush(); synchronized (mLocalOnlyHotspotRequests) { // If a tethering request comes in while we have LOHS running (or requested), call stop // for softap mode and restart softap with the tethering config. if (!mLocalOnlyHotspotRequests.isEmpty()) { mLog.trace("Call to stop Tethering while LOHS is active," + " Registered LOHS callers will be updated when softap stopped."); } return stopSoftApInternal(); } } /** * Internal method to stop softap mode. Callers of this method should have already checked * proper permissions beyond the NetworkStack permission. */ private boolean stopSoftApInternal() { mLog.trace("stopSoftApInternal uid=%").c(Binder.getCallingUid()).flush(); mWifiController.sendMessage(CMD_SET_AP, 0, 0); return true; } /** * Private method to handle SoftAp state changes */ private void handleWifiApStateChange( int currentState, int previousState, int errorCode, String ifaceName, int mode) { // The AP state update from WifiStateMachine for softap Slog.d(TAG, "handleWifiApStateChange: currentState=" + currentState + " previousState=" + previousState + " errorCode= " + errorCode + " ifaceName=" + ifaceName + " mode=" + mode); // check if we have a failure - since it is possible (worst case scenario where // WifiController and WifiStateMachine are out of sync wrt modes) to get two FAILED // notifications in a row, we need to handle this first. if (currentState == WIFI_AP_STATE_FAILED) { // update registered LOHS callbacks if we see a failure synchronized (mLocalOnlyHotspotRequests) { int errorToReport = ERROR_GENERIC; if (errorCode == SAP_START_FAILURE_NO_CHANNEL) { errorToReport = ERROR_NO_CHANNEL; } // holding the required lock: send message to requestors and clear the list sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked( errorToReport); // also need to clear interface ip state - send null for now since we don't know // what interface (and we have one anyway) updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); } return; } if (currentState == WIFI_AP_STATE_DISABLING || currentState == WIFI_AP_STATE_DISABLED) { // softap is shutting down or is down... let requestors know via the onStopped call synchronized (mLocalOnlyHotspotRequests) { // if we are currently in hotspot mode, then trigger onStopped for registered // requestors, otherwise something odd happened and we should clear state if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_LOCAL_ONLY)) { // holding the required lock: send message to requestors and clear the list sendHotspotStoppedMessageToAllLOHSRequestInfoEntriesLocked(); } else { // LOHS not active: report an error (still holding the required lock) sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked(ERROR_GENERIC); } // also clear interface ip state - send null for now since we don't know what // interface (and we only have one anyway) updateInterfaceIpState(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); } return; } // remaining states are enabling or enabled... those are not used for the callbacks } /** * Helper method to send a HOTSPOT_FAILED message to all registered LocalOnlyHotspotRequest * callers and clear the registrations. * * Callers should already hold the mLocalOnlyHotspotRequests lock. */ private void sendHotspotFailedMessageToAllLOHSRequestInfoEntriesLocked(int arg1) { for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { try { requestor.sendHotspotFailedMessage(arg1); requestor.unlinkDeathRecipient(); } catch (RemoteException e) { // This will be cleaned up by binder death handling } } // Since all callers were notified, now clear the registrations. mLocalOnlyHotspotRequests.clear(); } /** * Helper method to send a HOTSPOT_STOPPED message to all registered LocalOnlyHotspotRequest * callers and clear the registrations. * * Callers should already hold the mLocalOnlyHotspotRequests lock. */ private void sendHotspotStoppedMessageToAllLOHSRequestInfoEntriesLocked() { for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { try { requestor.sendHotspotStoppedMessage(); requestor.unlinkDeathRecipient(); } catch (RemoteException e) { // This will be cleaned up by binder death handling } } // Since all callers were notified, now clear the registrations. mLocalOnlyHotspotRequests.clear(); } /** * Helper method to send a HOTSPOT_STARTED message to all registered LocalOnlyHotspotRequest * callers. * * Callers should already hold the mLocalOnlyHotspotRequests lock. */ private void sendHotspotStartedMessageToAllLOHSRequestInfoEntriesLocked() { for (LocalOnlyHotspotRequestInfo requestor : mLocalOnlyHotspotRequests.values()) { try { requestor.sendHotspotStartedMessage(mLocalOnlyHotspotConfig); } catch (RemoteException e) { // This will be cleaned up by binder death handling } } } /** * Temporary method used for testing while startLocalOnlyHotspot is not fully implemented. This * method allows unit tests to register callbacks directly for testing mechanisms triggered by * softap mode changes. */ @VisibleForTesting void registerLOHSForTest(int pid, LocalOnlyHotspotRequestInfo request) { mLocalOnlyHotspotRequests.put(pid, request); } /** * Method to start LocalOnlyHotspot. In this method, permissions, settings and modes are * checked to verify that we can enter softapmode. This method returns * {@link LocalOnlyHotspotCallback#REQUEST_REGISTERED} if we will attempt to start, otherwise, * possible startup erros may include tethering being disallowed failure reason {@link * LocalOnlyHotspotCallback#ERROR_TETHERING_DISALLOWED} or an incompatible mode failure reason * {@link LocalOnlyHotspotCallback#ERROR_INCOMPATIBLE_MODE}. * * see {@link WifiManager#startLocalOnlyHotspot(LocalOnlyHotspotCallback)} * * @param messenger Messenger to send messages to the corresponding WifiManager. * @param binder IBinder instance to allow cleanup if the app dies * @param packageName String name of the calling package * * @return int return code for attempt to start LocalOnlyHotspot. * * @throws SecurityException if the caller does not have permission to start a Local Only * Hotspot. * @throws IllegalStateException if the caller attempts to start the LocalOnlyHotspot while they * have an outstanding request. */ @Override public int startLocalOnlyHotspot(Messenger messenger, IBinder binder, String packageName) { // first check if the caller has permission to start a local only hotspot // need to check for WIFI_STATE_CHANGE and location permission final int uid = Binder.getCallingUid(); final int pid = Binder.getCallingPid(); enforceChangePermission(); enforceLocationPermission(packageName, uid); // also need to verify that Locations services are enabled. if (mSettingsStore.getLocationModeSetting(mContext) == Settings.Secure.LOCATION_MODE_OFF) { throw new SecurityException("Location mode is not enabled."); } // verify that tethering is not disabled if (mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { return LocalOnlyHotspotCallback.ERROR_TETHERING_DISALLOWED; } mLog.trace("startLocalOnlyHotspot uid=% pid=%").c(uid).c(pid).flush(); synchronized (mLocalOnlyHotspotRequests) { // check if we are currently tethering if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_TETHERED)) { // Tethering is enabled, cannot start LocalOnlyHotspot mLog.trace("Cannot start localOnlyHotspot when WiFi Tethering is active."); return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE; } // does this caller already have a request? LocalOnlyHotspotRequestInfo request = mLocalOnlyHotspotRequests.get(pid); if (request != null) { mLog.trace("caller already has an active request"); throw new IllegalStateException( "Caller already has an active LocalOnlyHotspot request"); } // now create the new LOHS request info object request = new LocalOnlyHotspotRequestInfo(binder, messenger, new LocalOnlyRequestorCallback()); // check current operating state and take action if needed if (mIfaceIpModes.contains(WifiManager.IFACE_IP_MODE_LOCAL_ONLY)) { // LOHS is already active, send out what is running try { mLog.trace("LOHS already up, trigger onStarted callback"); request.sendHotspotStartedMessage(mLocalOnlyHotspotConfig); } catch (RemoteException e) { return LocalOnlyHotspotCallback.ERROR_GENERIC; } } else if (mLocalOnlyHotspotRequests.isEmpty()) { // this is the first request, then set up our config and start LOHS mLocalOnlyHotspotConfig = WifiApConfigStore.generateLocalOnlyHotspotConfig(mContext); startSoftApInternal(mLocalOnlyHotspotConfig, WifiManager.IFACE_IP_MODE_LOCAL_ONLY); } mLocalOnlyHotspotRequests.put(pid, request); return LocalOnlyHotspotCallback.REQUEST_REGISTERED; } } /** * see {@link WifiManager#stopLocalOnlyHotspot()} * * @throws SecurityException if the caller does not have permission to stop a Local Only * Hotspot. */ @Override public void stopLocalOnlyHotspot() { // first check if the caller has permission to stop a local only hotspot enforceChangePermission(); final int uid = Binder.getCallingUid(); final int pid = Binder.getCallingPid(); mLog.trace("stopLocalOnlyHotspot uid=% pid=%").c(uid).c(pid).flush(); synchronized (mLocalOnlyHotspotRequests) { // was the caller already registered? check request tracker - return false if not LocalOnlyHotspotRequestInfo requestInfo = mLocalOnlyHotspotRequests.get(pid); if (requestInfo == null) { return; } requestInfo.unlinkDeathRecipient(); unregisterCallingAppAndStopLocalOnlyHotspot(requestInfo); } // end synchronized } /** * Helper method to unregister LocalOnlyHotspot requestors and stop the hotspot if needed. */ private void unregisterCallingAppAndStopLocalOnlyHotspot(LocalOnlyHotspotRequestInfo request) { mLog.trace("unregisterCallingAppAndStopLocalOnlyHotspot pid=%").c(request.getPid()).flush(); synchronized (mLocalOnlyHotspotRequests) { if (mLocalOnlyHotspotRequests.remove(request.getPid()) == null) { mLog.trace("LocalOnlyHotspotRequestInfo not found to remove"); return; } if (mLocalOnlyHotspotRequests.isEmpty()) { mLocalOnlyHotspotConfig = null; updateInterfaceIpStateInternal(null, WifiManager.IFACE_IP_MODE_UNSPECIFIED); // if that was the last caller, then call stopSoftAp as WifiService long identity = Binder.clearCallingIdentity(); try { stopSoftApInternal(); } finally { Binder.restoreCallingIdentity(identity); } } } } /** * see {@link WifiManager#watchLocalOnlyHotspot(LocalOnlyHotspotObserver)} * * This call requires the android.permission.NETWORK_SETTINGS permission. * * @param messenger Messenger to send messages to the corresponding WifiManager. * @param binder IBinder instance to allow cleanup if the app dies * * @throws SecurityException if the caller does not have permission to watch Local Only Hotspot * status updates. * @throws IllegalStateException if the caller attempts to watch LocalOnlyHotspot updates with * an existing subscription. */ @Override public void startWatchLocalOnlyHotspot(Messenger messenger, IBinder binder) { final String packageName = mContext.getOpPackageName(); // NETWORK_SETTINGS is a signature only permission. enforceNetworkSettingsPermission(); throw new UnsupportedOperationException("LocalOnlyHotspot is still in development"); } /** * see {@link WifiManager#unregisterLocalOnlyHotspotObserver()} */ @Override public void stopWatchLocalOnlyHotspot() { // NETWORK_STACK is a signature only permission. enforceNetworkSettingsPermission(); throw new UnsupportedOperationException("LocalOnlyHotspot is still in development"); } /** * see {@link WifiManager#getWifiApConfiguration()} * @return soft access point configuration * @throws SecurityException if the caller does not have permission to retrieve the softap * config */ @Override public WifiConfiguration getWifiApConfiguration() { enforceAccessPermission(); int uid = Binder.getCallingUid(); // only allow Settings UI to get the saved SoftApConfig if (!mWifiPermissionsUtil.checkConfigOverridePermission(uid)) { // random apps should not be allowed to read the user specified config throw new SecurityException("App not allowed to read or update stored WiFi Ap config " + "(uid = " + uid + ")"); } mLog.trace("getWifiApConfiguration uid=%").c(uid).flush(); return mWifiStateMachine.syncGetWifiApConfiguration(); } /** * see {@link WifiManager#setWifiApConfiguration(WifiConfiguration)} * @param wifiConfig WifiConfiguration details for soft access point * @throws SecurityException if the caller does not have permission to write the sotap config */ @Override public void setWifiApConfiguration(WifiConfiguration wifiConfig) { enforceChangePermission(); int uid = Binder.getCallingUid(); // only allow Settings UI to write the stored SoftApConfig if (!mWifiPermissionsUtil.checkConfigOverridePermission(uid)) { // random apps should not be allowed to read the user specified config throw new SecurityException("App not allowed to read or update stored WiFi AP config " + "(uid = " + uid + ")"); } mLog.trace("setWifiApConfiguration uid=%").c(uid).flush(); if (wifiConfig == null) return; if (isValid(wifiConfig)) { mWifiStateMachine.setWifiApConfiguration(wifiConfig); } else { Slog.e(TAG, "Invalid WifiConfiguration"); } } /** * see {@link android.net.wifi.WifiManager#isScanAlwaysAvailable()} */ @Override public boolean isScanAlwaysAvailable() { enforceAccessPermission(); mLog.trace("isScanAlwaysAvailable uid=%").c(Binder.getCallingUid()).flush(); return mSettingsStore.isScanAlwaysAvailable(); } /** * see {@link android.net.wifi.WifiManager#disconnect()} */ @Override public void disconnect() { enforceChangePermission(); mLog.trace("disconnect uid=%").c(Binder.getCallingUid()).flush(); mWifiStateMachine.disconnectCommand(); } /** * see {@link android.net.wifi.WifiManager#reconnect()} */ @Override public void reconnect() { enforceChangePermission(); mLog.trace("reconnect uid=%").c(Binder.getCallingUid()).flush(); mWifiStateMachine.reconnectCommand(); } /** * see {@link android.net.wifi.WifiManager#reassociate()} */ @Override public void reassociate() { enforceChangePermission(); mLog.trace("reassociate uid=%").c(Binder.getCallingUid()).flush(); mWifiStateMachine.reassociateCommand(); } /** * see {@link android.net.wifi.WifiManager#getSupportedFeatures} */ @Override public int getSupportedFeatures() { enforceAccessPermission(); mLog.trace("getSupportedFeatures uid=%").c(Binder.getCallingUid()).flush(); if (mWifiStateMachineChannel != null) { return mWifiStateMachine.syncGetSupportedFeatures(mWifiStateMachineChannel); } else { Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); return 0; } } @Override public void requestActivityInfo(ResultReceiver result) { Bundle bundle = new Bundle(); mLog.trace("requestActivityInfo uid=%").c(Binder.getCallingUid()).flush(); bundle.putParcelable(BatteryStats.RESULT_RECEIVER_CONTROLLER_KEY, reportActivityInfo()); result.send(0, bundle); } /** * see {@link android.net.wifi.WifiManager#getControllerActivityEnergyInfo(int)} */ @Override public WifiActivityEnergyInfo reportActivityInfo() { enforceAccessPermission(); mLog.trace("reportActivityInfo uid=%").c(Binder.getCallingUid()).flush(); if ((getSupportedFeatures() & WifiManager.WIFI_FEATURE_LINK_LAYER_STATS) == 0) { return null; } WifiLinkLayerStats stats; WifiActivityEnergyInfo energyInfo = null; if (mWifiStateMachineChannel != null) { stats = mWifiStateMachine.syncGetLinkLayerStats(mWifiStateMachineChannel); if (stats != null) { final long rxIdleCurrent = mContext.getResources().getInteger( com.android.internal.R.integer.config_wifi_idle_receive_cur_ma); final long rxCurrent = mContext.getResources().getInteger( com.android.internal.R.integer.config_wifi_active_rx_cur_ma); final long txCurrent = mContext.getResources().getInteger( com.android.internal.R.integer.config_wifi_tx_cur_ma); final double voltage = mContext.getResources().getInteger( com.android.internal.R.integer.config_wifi_operating_voltage_mv) / 1000.0; final long rxIdleTime = stats.on_time - stats.tx_time - stats.rx_time; final long[] txTimePerLevel; if (stats.tx_time_per_level != null) { txTimePerLevel = new long[stats.tx_time_per_level.length]; for (int i = 0; i < txTimePerLevel.length; i++) { txTimePerLevel[i] = stats.tx_time_per_level[i]; // TODO(b/27227497): Need to read the power consumed per level from config } } else { // This will happen if the HAL get link layer API returned null. txTimePerLevel = new long[0]; } final long energyUsed = (long)((stats.tx_time * txCurrent + stats.rx_time * rxCurrent + rxIdleTime * rxIdleCurrent) * voltage); if (VDBG || rxIdleTime < 0 || stats.on_time < 0 || stats.tx_time < 0 || stats.rx_time < 0 || energyUsed < 0) { StringBuilder sb = new StringBuilder(); sb.append(" rxIdleCur=" + rxIdleCurrent); sb.append(" rxCur=" + rxCurrent); sb.append(" txCur=" + txCurrent); sb.append(" voltage=" + voltage); sb.append(" on_time=" + stats.on_time); sb.append(" tx_time=" + stats.tx_time); sb.append(" tx_time_per_level=" + Arrays.toString(txTimePerLevel)); sb.append(" rx_time=" + stats.rx_time); sb.append(" rxIdleTime=" + rxIdleTime); sb.append(" energy=" + energyUsed); Log.d(TAG, " reportActivityInfo: " + sb.toString()); } // Convert the LinkLayerStats into EnergyActivity energyInfo = new WifiActivityEnergyInfo(mClock.getElapsedSinceBootMillis(), WifiActivityEnergyInfo.STACK_STATE_STATE_IDLE, stats.tx_time, txTimePerLevel, stats.rx_time, rxIdleTime, energyUsed); } if (energyInfo != null && energyInfo.isValid()) { return energyInfo; } else { return null; } } else { Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); return null; } } /** * see {@link android.net.wifi.WifiManager#getConfiguredNetworks()} * @return the list of configured networks */ @Override public ParceledListSlice getConfiguredNetworks() { enforceAccessPermission(); mLog.trace("getConfiguredNetworks uid=%").c(Binder.getCallingUid()).flush(); if (mWifiStateMachineChannel != null) { List configs = mWifiStateMachine.syncGetConfiguredNetworks( Binder.getCallingUid(), mWifiStateMachineChannel); if (configs != null) { return new ParceledListSlice(configs); } } 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 */ @Override public ParceledListSlice getPrivilegedConfiguredNetworks() { enforceReadCredentialPermission(); enforceAccessPermission(); mLog.trace("getPrivilegedConfiguredNetworks uid=%").c(Binder.getCallingUid()).flush(); if (mWifiStateMachineChannel != null) { List configs = mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(mWifiStateMachineChannel); if (configs != null) { return new ParceledListSlice(configs); } } else { Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); } return null; } /** * Returns a WifiConfiguration for a Passpoint network matching this ScanResult. * * @param scanResult scanResult that represents the BSSID * @return {@link WifiConfiguration} that matches this BSSID or null */ @Override public WifiConfiguration getMatchingWifiConfig(ScanResult scanResult) { enforceAccessPermission(); mLog.trace("getMatchingWifiConfig uid=%").c(Binder.getCallingUid()).flush(); if (!mContext.getResources().getBoolean( com.android.internal.R.bool.config_wifi_hotspot2_enabled)) { throw new UnsupportedOperationException("Passpoint not enabled"); } return mWifiStateMachine.syncGetMatchingWifiConfig(scanResult, mWifiStateMachineChannel); } /** * 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 */ @Override public int addOrUpdateNetwork(WifiConfiguration config) { enforceChangePermission(); mLog.trace("addOrUpdateNetwork uid=%").c(Binder.getCallingUid()).flush(); // Previously, this API is overloaded for installing Passpoint profiles. Now // that we have a dedicated API for doing it, redirect the call to the dedicated API. if (config.isPasspoint()) { PasspointConfiguration passpointConfig = PasspointProvider.convertFromWifiConfig(config); if (passpointConfig.getCredential() == null) { Slog.e(TAG, "Missing credential for Passpoint profile"); return -1; } // Copy over certificates and keys. passpointConfig.getCredential().setCaCertificate( config.enterpriseConfig.getCaCertificate()); passpointConfig.getCredential().setClientCertificateChain( config.enterpriseConfig.getClientCertificateChain()); passpointConfig.getCredential().setClientPrivateKey( config.enterpriseConfig.getClientPrivateKey()); if (!addOrUpdatePasspointConfiguration(passpointConfig)) { Slog.e(TAG, "Failed to add Passpoint profile"); return -1; } // There is no network ID associated with a Passpoint profile. return 0; } if (isValid(config)) { //TODO: pass the Uid the WifiStateMachine as a message parameter Slog.i("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; } } public static void verifyCert(X509Certificate caCert) throws GeneralSecurityException, IOException { CertificateFactory factory = CertificateFactory.getInstance("X.509"); CertPathValidator validator = CertPathValidator.getInstance(CertPathValidator.getDefaultType()); CertPath path = factory.generateCertPath( Arrays.asList(caCert)); KeyStore ks = KeyStore.getInstance("AndroidCAStore"); ks.load(null, null); PKIXParameters params = new PKIXParameters(ks); params.setRevocationEnabled(false); validator.validate(path, params); } /** * 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 */ @Override public boolean removeNetwork(int netId) { enforceChangePermission(); mLog.trace("removeNetwork uid=%").c(Binder.getCallingUid()).flush(); // TODO Add private logging for netId b/33807876 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 */ @Override public boolean enableNetwork(int netId, boolean disableOthers) { enforceChangePermission(); // TODO b/33807876 Log netId mLog.trace("enableNetwork uid=% disableOthers=%") .c(Binder.getCallingUid()) .c(disableOthers).flush(); 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 */ @Override public boolean disableNetwork(int netId) { enforceChangePermission(); // TODO b/33807876 Log netId mLog.trace("disableNetwork uid=%").c(Binder.getCallingUid()).flush(); 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}. */ @Override public WifiInfo getConnectionInfo() { enforceAccessPermission(); mLog.trace("getConnectionInfo uid=%").c(Binder.getCallingUid()).flush(); /* * 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 */ @Override public List getScanResults(String callingPackage) { enforceAccessPermission(); int uid = Binder.getCallingUid(); long ident = Binder.clearCallingIdentity(); try { if (!mWifiPermissionsUtil.canAccessScanResults(callingPackage, uid, Build.VERSION_CODES.M)) { return new ArrayList(); } if (mWifiScanner == null) { mWifiScanner = mWifiInjector.getWifiScanner(); } return mWifiScanner.getSingleScanResults(); } finally { Binder.restoreCallingIdentity(ident); } } /** * Add or update a Passpoint configuration. * * @param config The Passpoint configuration to be added * @return true on success or false on failure */ @Override public boolean addOrUpdatePasspointConfiguration(PasspointConfiguration config) { enforceChangePermission(); mLog.trace("addorUpdatePasspointConfiguration uid=%").c(Binder.getCallingUid()).flush(); if (!mContext.getResources().getBoolean( com.android.internal.R.bool.config_wifi_hotspot2_enabled)) { throw new UnsupportedOperationException("Passpoint not enabled"); } return mWifiStateMachine.syncAddOrUpdatePasspointConfig(mWifiStateMachineChannel, config, Binder.getCallingUid()); } /** * Remove the Passpoint configuration identified by its FQDN (Fully Qualified Domain Name). * * @param fqdn The FQDN of the Passpoint configuration to be removed * @return true on success or false on failure */ @Override public boolean removePasspointConfiguration(String fqdn) { enforceChangePermission(); mLog.trace("removePasspointConfiguration uid=%").c(Binder.getCallingUid()).flush(); if (!mContext.getResources().getBoolean( com.android.internal.R.bool.config_wifi_hotspot2_enabled)) { throw new UnsupportedOperationException("Passpoint not enabled"); } return mWifiStateMachine.syncRemovePasspointConfig(mWifiStateMachineChannel, fqdn); } /** * Return the list of the installed Passpoint configurations. * * An empty list will be returned when no configuration is installed. * * @return A list of {@link PasspointConfiguration} */ @Override public List getPasspointConfigurations() { enforceAccessPermission(); mLog.trace("getPasspointConfigurations uid=%").c(Binder.getCallingUid()).flush(); if (!mContext.getResources().getBoolean( com.android.internal.R.bool.config_wifi_hotspot2_enabled)) { throw new UnsupportedOperationException("Passpoint not enabled"); } return mWifiStateMachine.syncGetPasspointConfigs(mWifiStateMachineChannel); } /** * Query for a Hotspot 2.0 release 2 OSU icon * @param bssid The BSSID of the AP * @param fileName Icon file name */ @Override public void queryPasspointIcon(long bssid, String fileName) { enforceAccessPermission(); mLog.trace("queryPasspointIcon uid=%").c(Binder.getCallingUid()).flush(); if (!mContext.getResources().getBoolean( com.android.internal.R.bool.config_wifi_hotspot2_enabled)) { throw new UnsupportedOperationException("Passpoint not enabled"); } mWifiStateMachine.syncQueryPasspointIcon(mWifiStateMachineChannel, bssid, fileName); } /** * Match the currently associated network against the SP matching the given FQDN * @param fqdn FQDN of the SP * @return ordinal [HomeProvider, RoamingProvider, Incomplete, None, Declined] */ @Override public int matchProviderWithCurrentNetwork(String fqdn) { mLog.trace("matchProviderWithCurrentNetwork uid=%").c(Binder.getCallingUid()).flush(); return mWifiStateMachine.matchProviderWithCurrentNetwork(mWifiStateMachineChannel, fqdn); } /** * Deauthenticate and set the re-authentication hold off time for the current network * @param holdoff hold off time in milliseconds * @param ess set if the hold off pertains to an ESS rather than a BSS */ @Override public void deauthenticateNetwork(long holdoff, boolean ess) { mLog.trace("deauthenticateNetwork uid=%").c(Binder.getCallingUid()).flush(); mWifiStateMachine.deauthenticateNetwork(mWifiStateMachineChannel, holdoff, ess); } /** * Tell the supplicant to persist the current list of configured networks. * @return {@code true} if the operation succeeded * * TODO: deprecate this */ @Override public boolean saveConfiguration() { enforceChangePermission(); mLog.trace("saveConfiguration uid=%").c(Binder.getCallingUid()).flush(); 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. */ @Override public void setCountryCode(String countryCode, boolean persist) { Slog.i(TAG, "WifiService trying to set country code to " + countryCode + " with persist set to " + persist); enforceConnectivityInternalPermission(); mLog.trace("setCountryCode uid=%").c(Binder.getCallingUid()).flush(); final long token = Binder.clearCallingIdentity(); mCountryCode.setCountryCode(countryCode); Binder.restoreCallingIdentity(token); } /** * Get the country code * @return Get the best choice country code for wifi, regardless of if it was set or * not. * Returns null when there is no country code available. */ @Override public String getCountryCode() { enforceConnectivityInternalPermission(); mLog.trace("getCountryCode uid=%").c(Binder.getCallingUid()).flush(); String country = mCountryCode.getCountryCode(); return country; } @Override public boolean isDualBandSupported() { //TODO: Should move towards adding a driver API that checks at runtime mLog.trace("isDualBandSupported uid=%").c(Binder.getCallingUid()).flush(); 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 */ @Override @Deprecated public DhcpInfo getDhcpInfo() { enforceAccessPermission(); mLog.trace("getDhcpInfo uid=%").c(Binder.getCallingUid()).flush(); 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; } } Inet4Address serverAddress = dhcpResults.serverAddress; if (serverAddress != null) { info.serverAddress = NetworkUtils.inetAddressToInt(serverAddress); } info.leaseDuration = dhcpResults.leaseDuration; return info; } /** * 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 { @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; } } @Override public void enableTdls(String remoteAddress, boolean enable) { if (remoteAddress == null) { throw new IllegalArgumentException("remoteAddress cannot be null"); } mLog.trace("enableTdls uid=% enable=%").c(Binder.getCallingUid()).c(enable).flush(); TdlsTaskParams params = new TdlsTaskParams(); params.remoteIpAddress = remoteAddress; params.enable = enable; new TdlsTask().execute(params); } @Override public void enableTdlsWithMacAddress(String remoteMacAddress, boolean enable) { mLog.trace("enableTdlsWithMacAddress uid=% enable=%") .c(Binder.getCallingUid()) .c(enable) .flush(); 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 */ @Override public Messenger getWifiServiceMessenger() { enforceAccessPermission(); enforceChangePermission(); mLog.trace("getWifiServiceMessenger uid=%").c(Binder.getCallingUid()).flush(); return new Messenger(mClientHandler); } /** * Disable an ephemeral network, i.e. network that is created thru a WiFi Scorer */ @Override public void disableEphemeralNetwork(String SSID) { enforceAccessPermission(); enforceChangePermission(); mLog.trace("disableEphemeralNetwork uid=%").c(Binder.getCallingUid()).flush(); mWifiStateMachine.disableEphemeralNetwork(SSID); } 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); } else if (action.equals(TelephonyIntents.ACTION_EMERGENCY_CALL_STATE_CHANGED)) { boolean inCall = intent.getBooleanExtra(PhoneConstants.PHONE_IN_EMERGENCY_CALL, false); mWifiController.sendMessage(CMD_EMERGENCY_CALL_STATE_CHANGED, inCall ? 1 : 0, 0); } else if (action.equals(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED)) { handleIdleModeChanged(); } } }; private boolean startConsentUi(String packageName, int callingUid, String intentAction) throws RemoteException { if (UserHandle.getAppId(callingUid) == Process.SYSTEM_UID) { return false; } try { // Validate the package only if we are going to use it ApplicationInfo applicationInfo = mContext.getPackageManager() .getApplicationInfoAsUser(packageName, PackageManager.MATCH_DEBUG_TRIAGED_MISSING, UserHandle.getUserId(callingUid)); if (applicationInfo.uid != callingUid) { throw new SecurityException("Package " + callingUid + " not in uid " + callingUid); } // Permission review mode, trigger a user prompt Intent intent = new Intent(intentAction); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); intent.putExtra(Intent.EXTRA_PACKAGE_NAME, packageName); mContext.startActivity(intent); return true; } catch (PackageManager.NameNotFoundException e) { throw new RemoteException(e.getMessage()); } } /** * 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); } }; mFrameworkFacade.registerContentObserver(mContext, Settings.Global.getUriFor(Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE), false, contentObserver); } // Monitors settings changes related to background wifi scan throttling. private void registerForBackgroundThrottleChanges() { mFrameworkFacade.registerContentObserver( mContext, Settings.Global.getUriFor( Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS), false, new ContentObserver(null) { @Override public void onChange(boolean selfChange) { updateBackgroundThrottleInterval(); } } ); mFrameworkFacade.registerContentObserver( mContext, Settings.Global.getUriFor( Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_PACKAGE_WHITELIST), false, new ContentObserver(null) { @Override public void onChange(boolean selfChange) { updateBackgroundThrottlingWhitelist(); } } ); } private void updateBackgroundThrottleInterval() { mBackgroundThrottleInterval = mFrameworkFacade.getLongSetting( mContext, Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS, DEFAULT_SCAN_BACKGROUND_THROTTLE_INTERVAL_MS); } private void updateBackgroundThrottlingWhitelist() { String setting = mFrameworkFacade.getStringSetting( mContext, Settings.Global.WIFI_SCAN_BACKGROUND_THROTTLE_PACKAGE_WHITELIST); mBackgroundThrottlePackageWhitelist.clear(); if (setting != null) { mBackgroundThrottlePackageWhitelist.addAll(Arrays.asList(setting.split(","))); } } 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); intentFilter.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED); boolean trackEmergencyCallState = mContext.getResources().getBoolean( com.android.internal.R.bool.config_wifi_turn_off_during_emergency_call); if (trackEmergencyCallState) { intentFilter.addAction(TelephonyIntents.ACTION_EMERGENCY_CALL_STATE_CHANGED); } mContext.registerReceiver(mReceiver, intentFilter); } private void registerForPackageOrUserRemoval() { IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); intentFilter.addAction(Intent.ACTION_USER_REMOVED); mContext.registerReceiverAsUser(new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { switch (intent.getAction()) { case Intent.ACTION_PACKAGE_REMOVED: { if (intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) { return; } int uid = intent.getIntExtra(Intent.EXTRA_UID, -1); Uri uri = intent.getData(); if (uid == -1 || uri == null) { return; } String pkgName = uri.getSchemeSpecificPart(); mWifiStateMachine.removeAppConfigs(pkgName, uid); break; } case Intent.ACTION_USER_REMOVED: { int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); mWifiStateMachine.removeUserConfigs(userHandle); break; } } } }, UserHandle.ALL, intentFilter, null, null); } @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; } if (args != null && args.length > 0 && WifiMetrics.PROTO_DUMP_ARG.equals(args[0])) { // WifiMetrics proto bytes were requested. Dump only these. mWifiStateMachine.updateWifiMetrics(); mWifiMetrics.dump(fd, pw, args); } else if (args != null && args.length > 0 && IpManager.DUMP_ARG.equals(args[0])) { // IpManager dump was requested. Pass it along and take no further action. String[] ipManagerArgs = new String[args.length - 1]; System.arraycopy(args, 1, ipManagerArgs, 0, ipManagerArgs.length); mWifiStateMachine.dumpIpManager(fd, pw, ipManagerArgs); } else if (args != null && args.length > 0 && DUMP_ARG_SET_IPREACH_DISCONNECT.equals(args[0])) { if (args.length > 1) { if (DUMP_ARG_SET_IPREACH_DISCONNECT_ENABLED.equals(args[1])) { mWifiStateMachine.setIpReachabilityDisconnectEnabled(true); } else if (DUMP_ARG_SET_IPREACH_DISCONNECT_DISABLED.equals(args[1])) { mWifiStateMachine.setIpReachabilityDisconnectEnabled(false); } } pw.println("IPREACH_DISCONNECT state is " + mWifiStateMachine.getIpReachabilityDisconnectEnabled()); return; } else { pw.println("Wi-Fi is " + mWifiStateMachine.syncGetWifiStateByName()); pw.println("Stay-awake conditions: " + mFacade.getIntegerSetting(mContext, Settings.Global.STAY_ON_WHILE_PLUGGED_IN, 0)); pw.println("mInIdleMode " + mInIdleMode); pw.println("mScanPending " + mScanPending); mWifiController.dump(fd, pw, args); mSettingsStore.dump(fd, pw, args); mNotificationController.dump(fd, pw, args); mTrafficPoller.dump(fd, pw, args); pw.println(); pw.println("Locks held:"); mWifiLockManager.dump(pw); pw.println(); mWifiMulticastLockManager.dump(pw); pw.println(); mWifiStateMachine.dump(fd, pw, args); pw.println(); mWifiStateMachine.updateWifiMetrics(); mWifiMetrics.dump(fd, pw, args); pw.println(); mWifiBackupRestore.dump(fd, pw, args); pw.println(); } } @Override public boolean acquireWifiLock(IBinder binder, int lockMode, String tag, WorkSource ws) { mLog.trace("acquireWifiLock uid=% lockMode=%") .c(Binder.getCallingUid()) .c(lockMode).flush(); if (mWifiLockManager.acquireWifiLock(lockMode, tag, binder, ws)) { mWifiController.sendMessage(CMD_LOCKS_CHANGED); return true; } return false; } @Override public void updateWifiLockWorkSource(IBinder binder, WorkSource ws) { mLog.trace("updateWifiLockWorkSource uid=%").c(Binder.getCallingUid()).flush(); mWifiLockManager.updateWifiLockWorkSource(binder, ws); } @Override public boolean releaseWifiLock(IBinder binder) { mLog.trace("releaseWifiLock uid=%").c(Binder.getCallingUid()).flush(); if (mWifiLockManager.releaseWifiLock(binder)) { mWifiController.sendMessage(CMD_LOCKS_CHANGED); return true; } return false; } @Override public void initializeMulticastFiltering() { enforceMulticastChangePermission(); mLog.trace("initializeMulticastFiltering uid=%").c(Binder.getCallingUid()).flush(); mWifiMulticastLockManager.initializeFiltering(); } @Override public void acquireMulticastLock(IBinder binder, String tag) { enforceMulticastChangePermission(); mLog.trace("acquireMulticastLock uid=%").c(Binder.getCallingUid()).flush(); mWifiMulticastLockManager.acquireLock(binder, tag); } @Override public void releaseMulticastLock() { enforceMulticastChangePermission(); mLog.trace("releaseMulticastLock uid=%").c(Binder.getCallingUid()).flush(); mWifiMulticastLockManager.releaseLock(); } @Override public boolean isMulticastEnabled() { enforceAccessPermission(); mLog.trace("isMulticastEnabled uid=%").c(Binder.getCallingUid()).flush(); return mWifiMulticastLockManager.isMulticastEnabled(); } @Override public void enableVerboseLogging(int verbose) { enforceAccessPermission(); mLog.trace("enableVerboseLogging uid=% verbose=%") .c(Binder.getCallingUid()) .c(verbose).flush(); mFacade.setIntegerSetting( mContext, Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED, verbose); enableVerboseLoggingInternal(verbose); } void enableVerboseLoggingInternal(int verbose) { mWifiStateMachine.enableVerboseLogging(verbose); mWifiLockManager.enableVerboseLogging(verbose); mWifiMulticastLockManager.enableVerboseLogging(verbose); mWifiInjector.getWifiLastResortWatchdog().enableVerboseLogging(verbose); mWifiInjector.getWifiBackupRestore().enableVerboseLogging(verbose); LogcatLog.enableVerboseLogging(verbose); } @Override public int getVerboseLoggingLevel() { enforceAccessPermission(); mLog.trace("getVerboseLoggingLevel uid=%").c(Binder.getCallingUid()).flush(); return mFacade.getIntegerSetting( mContext, Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED, 0); } @Override public void enableAggressiveHandover(int enabled) { enforceAccessPermission(); mLog.trace("enableAggressiveHandover uid=% enabled=%") .c(Binder.getCallingUid()) .c(enabled) .flush(); mWifiStateMachine.enableAggressiveHandover(enabled); } @Override public int getAggressiveHandover() { enforceAccessPermission(); mLog.trace("getAggressiveHandover uid=%").c(Binder.getCallingUid()).flush(); return mWifiStateMachine.getAggressiveHandover(); } @Override public void setAllowScansWithTraffic(int enabled) { enforceAccessPermission(); mLog.trace("setAllowScansWithTraffic uid=% enabled=%") .c(Binder.getCallingUid()) .c(enabled).flush(); mWifiStateMachine.setAllowScansWithTraffic(enabled); } @Override public int getAllowScansWithTraffic() { enforceAccessPermission(); mLog.trace("getAllowScansWithTraffic uid=%").c(Binder.getCallingUid()).flush(); return mWifiStateMachine.getAllowScansWithTraffic(); } @Override public boolean setEnableAutoJoinWhenAssociated(boolean enabled) { enforceChangePermission(); mLog.trace("setEnableAutoJoinWhenAssociated uid=% enabled=%") .c(Binder.getCallingUid()) .c(enabled).flush(); return mWifiStateMachine.setEnableAutoJoinWhenAssociated(enabled); } @Override public boolean getEnableAutoJoinWhenAssociated() { enforceAccessPermission(); mLog.trace("getEnableAutoJoinWhenAssociated uid=%").c(Binder.getCallingUid()).flush(); return mWifiStateMachine.getEnableAutoJoinWhenAssociated(); } /* Return the Wifi Connection statistics object */ @Override public WifiConnectionStatistics getConnectionStatistics() { enforceAccessPermission(); enforceReadCredentialPermission(); mLog.trace("getConnectionStatistics uid=%").c(Binder.getCallingUid()).flush(); if (mWifiStateMachineChannel != null) { return mWifiStateMachine.syncGetConnectionStatistics(mWifiStateMachineChannel); } else { Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); return null; } } @Override public void factoryReset() { enforceConnectivityInternalPermission(); mLog.trace("factoryReset uid=%").c(Binder.getCallingUid()).flush(); if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { return; } if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { // Turn mobile hotspot off - will also clear any registered LOHS requests when it is // shut down stopSoftApInternal(); } if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_WIFI)) { // Enable wifi try { setWifiEnabled(mContext.getOpPackageName(), true); } catch (RemoteException e) { /* ignore - local call */ } // Delete all Wifi SSIDs if (mWifiStateMachineChannel != null) { List networks = mWifiStateMachine.syncGetConfiguredNetworks( Binder.getCallingUid(), mWifiStateMachineChannel); if (networks != null) { for (WifiConfiguration config : networks) { removeNetwork(config.networkId); } saveConfiguration(); } } } } /* private methods */ static boolean logAndReturnFalse(String s) { Log.d(TAG, s); return false; } public static boolean isValid(WifiConfiguration config) { String validity = checkValidity(config); return validity == null || logAndReturnFalse(validity); } public static String checkValidity(WifiConfiguration config) { if (config.allowedKeyManagement == null) return "allowed kmgmt"; if (config.allowedKeyManagement.cardinality() > 1) { if (config.allowedKeyManagement.cardinality() != 2) { return "cardinality != 2"; } if (!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_EAP)) { return "not WPA_EAP"; } if ((!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.IEEE8021X)) && (!config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK))) { return "not PSK or 8021X"; } } if (config.getIpAssignment() == IpConfiguration.IpAssignment.STATIC) { StaticIpConfiguration staticIpConf = config.getStaticIpConfiguration(); if (staticIpConf == null) { return "null StaticIpConfiguration"; } if (staticIpConf.ipAddress == null) { return "null static ip Address"; } } return null; } @Override public Network getCurrentNetwork() { enforceAccessPermission(); mLog.trace("getCurrentNetwork uid=%").c(Binder.getCallingUid()).flush(); return mWifiStateMachine.getCurrentNetwork(); } public static String toHexString(String s) { if (s == null) { return "null"; } StringBuilder sb = new StringBuilder(); sb.append('\'').append(s).append('\''); for (int n = 0; n < s.length(); n++) { sb.append(String.format(" %02x", s.charAt(n) & 0xffff)); } return sb.toString(); } public void hideCertFromUnaffiliatedUsers(String alias) { mCertManager.hideCertFromUnaffiliatedUsers(alias); } public String[] listClientCertsForCurrentUser() { return mCertManager.listClientCertsForCurrentUser(); } /** * Enable/disable WifiConnectivityManager at runtime * * @param enabled true-enable; false-disable */ @Override public void enableWifiConnectivityManager(boolean enabled) { enforceConnectivityInternalPermission(); mLog.trace("enableWifiConnectivityManager uid=% enabled=%") .c(Binder.getCallingUid()) .c(enabled).flush(); mWifiStateMachine.enableWifiConnectivityManager(enabled); } /** * Retrieve the data to be backed to save the current state. * * @return Raw byte stream of the data to be backed up. */ @Override public byte[] retrieveBackupData() { enforceNetworkSettingsPermission(); mLog.trace("retrieveBackupData uid=%").c(Binder.getCallingUid()).flush(); if (mWifiStateMachineChannel == null) { Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); return null; } Slog.d(TAG, "Retrieving backup data"); List wifiConfigurations = mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(mWifiStateMachineChannel); byte[] backupData = mWifiBackupRestore.retrieveBackupDataFromConfigurations(wifiConfigurations); Slog.d(TAG, "Retrieved backup data"); return backupData; } /** * Helper method to restore networks retrieved from backup data. * * @param configurations list of WifiConfiguration objects parsed from the backup data. */ private void restoreNetworks(List configurations) { if (configurations == null) { Slog.e(TAG, "Backup data parse failed"); return; } for (WifiConfiguration configuration : configurations) { int networkId = mWifiStateMachine.syncAddOrUpdateNetwork( mWifiStateMachineChannel, configuration); if (networkId == WifiConfiguration.INVALID_NETWORK_ID) { Slog.e(TAG, "Restore network failed: " + configuration.configKey()); continue; } // Enable all networks restored. mWifiStateMachine.syncEnableNetwork(mWifiStateMachineChannel, networkId, false); } } /** * Restore state from the backed up data. * * @param data Raw byte stream of the backed up data. */ @Override public void restoreBackupData(byte[] data) { enforceNetworkSettingsPermission(); mLog.trace("restoreBackupData uid=%").c(Binder.getCallingUid()).flush(); if (mWifiStateMachineChannel == null) { Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); return; } Slog.d(TAG, "Restoring backup data"); List wifiConfigurations = mWifiBackupRestore.retrieveConfigurationsFromBackupData(data); restoreNetworks(wifiConfigurations); Slog.d(TAG, "Restored backup data"); } /** * Restore state from the older supplicant back up data. * The old backup data was essentially a backup of wpa_supplicant.conf & ipconfig.txt file. * * @param supplicantData Raw byte stream of wpa_supplicant.conf * @param ipConfigData Raw byte stream of ipconfig.txt */ public void restoreSupplicantBackupData(byte[] supplicantData, byte[] ipConfigData) { enforceNetworkSettingsPermission(); mLog.trace("restoreSupplicantBackupData uid=%").c(Binder.getCallingUid()).flush(); if (mWifiStateMachineChannel == null) { Slog.e(TAG, "mWifiStateMachineChannel is not initialized"); return; } Slog.d(TAG, "Restoring supplicant backup data"); List wifiConfigurations = mWifiBackupRestore.retrieveConfigurationsFromSupplicantBackupData( supplicantData, ipConfigData); restoreNetworks(wifiConfigurations); Slog.d(TAG, "Restored supplicant backup data"); } }