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android / platform / prebuilts / fullsdk / sources / android-28 / refs/heads/androidx-exifinterface-release / . / com / android / server / wifi / WifiServiceImpl.java
blob: 7d6c109c1d75476a0e6a808f8995216310acb71e [file] [log] [blame]
/*
* 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.app.AppOpsManager.MODE_ALLOWED;
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_EMERGENCY_CALL_STATE_CHANGED;
import static com.android.server.wifi.WifiController.CMD_EMERGENCY_MODE_CHANGED;
import static com.android.server.wifi.WifiController.CMD_SCAN_ALWAYS_MODE_CHANGED;
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.annotation.CheckResult;
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.Network;
import android.net.NetworkUtils;
import android.net.Uri;
import android.net.ip.IpClient;
import android.net.wifi.ISoftApCallback;
import android.net.wifi.IWifiManager;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiActivityEnergyInfo;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.LocalOnlyHotspotCallback;
import android.net.wifi.WifiSsid;
import android.net.wifi.hotspot2.IProvisioningCallback;
import android.net.wifi.hotspot2.OsuProvider;
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.ShellCallback;
import android.os.UserHandle;
import android.os.UserManager;
import android.os.WorkSource;
import android.provider.Settings;
import android.util.Log;
import android.util.MutableInt;
import android.util.Slog;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.os.PowerProfile;
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.GeneralUtil.Mutable;
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.Iterator;
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;
// 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;
// Max wait time for posting blocking runnables
private static final int RUN_WITH_SCISSORS_TIMEOUT_MILLIS = 4000;
final WifiStateMachine mWifiStateMachine;
final ScanRequestProxy mScanRequestProxy;
private final Context mContext;
private final FrameworkFacade mFacade;
private final Clock mClock;
private final PowerManager mPowerManager;
private final AppOpsManager mAppOps;
private final UserManager mUserManager;
private final ActivityManager mActivityManager;
private final WifiCountryCode mCountryCode;
// Debug counter tracking scan requests sent by WifiManager
private int scanRequestCounter = 0;
/* 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;
private final WifiInjector mWifiInjector;
/* Backup/Restore Module */
private final WifiBackupRestore mWifiBackupRestore;
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<Integer, LocalOnlyHotspotRequestInfo> mLocalOnlyHotspotRequests;
@GuardedBy("mLocalOnlyHotspotRequests")
private WifiConfiguration mLocalOnlyHotspotConfig = null;
@GuardedBy("mLocalOnlyHotspotRequests")
private final ConcurrentHashMap<String, Integer> mIfaceIpModes;
/* Limit on number of registered soft AP callbacks to track and prevent potential memory leak */
private static final int NUM_SOFT_AP_CALLBACKS_WARN_LIMIT = 10;
private static final int NUM_SOFT_AP_CALLBACKS_WTF_LIMIT = 20;
private final HashMap<Integer, ISoftApCallback> mRegisteredSoftApCallbacks;
/**
* 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}
*
* Access/maintenance MUST be done on the wifi service thread
*/
// TODO: (b/71714381) Remove mWifiApState and broadcast mechanism, keep mSoftApState as the only
// field to store soft AP state. Then rename mSoftApState and mSoftApNumClients to
// mWifiApState and mWifiApNumClients, to match the constants (i.e. WIFI_AP_STATE_*)
private int mWifiApState = WifiManager.WIFI_AP_STATE_DISABLED;
private int mSoftApState = WifiManager.WIFI_AP_STATE_DISABLED;
private int mSoftApNumClients = 0;
/**
* Power profile
*/
PowerProfile mPowerProfile;
/**
* 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: {
if (checkChangePermissionAndReplyIfNotAuthorized(
msg, WifiManager.CONNECT_NETWORK_FAILED)) {
WifiConfiguration config = (WifiConfiguration) msg.obj;
int networkId = msg.arg1;
Slog.d(TAG, "CONNECT "
+ " nid=" + Integer.toString(networkId)
+ " uid=" + msg.sendingUid
+ " name="
+ mContext.getPackageManager().getNameForUid(msg.sendingUid));
if (config != null) {
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: {
if (checkChangePermissionAndReplyIfNotAuthorized(
msg, WifiManager.SAVE_NETWORK_FAILED)) {
WifiConfiguration config = (WifiConfiguration) msg.obj;
int networkId = msg.arg1;
Slog.d(TAG, "SAVE"
+ " nid=" + Integer.toString(networkId)
+ " uid=" + msg.sendingUid
+ " name="
+ mContext.getPackageManager().getNameForUid(msg.sendingUid));
if (config != null) {
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:
if (checkChangePermissionAndReplyIfNotAuthorized(
msg, WifiManager.FORGET_NETWORK_FAILED)) {
mWifiStateMachine.sendMessage(Message.obtain(msg));
}
break;
case WifiManager.START_WPS:
if (checkChangePermissionAndReplyIfNotAuthorized(msg, WifiManager.WPS_FAILED)) {
// WPS support is deprecated, return an error
replyFailed(msg, WifiManager.WPS_FAILED, WifiManager.ERROR);
}
break;
case WifiManager.CANCEL_WPS:
if (checkChangePermissionAndReplyIfNotAuthorized(
msg, WifiManager.CANCEL_WPS_FAILED)) {
// WPS support is deprecated, return an error
replyFailed(msg, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR);
}
break;
case WifiManager.DISABLE_NETWORK:
if (checkChangePermissionAndReplyIfNotAuthorized(
msg, WifiManager.DISABLE_NETWORK_FAILED)) {
mWifiStateMachine.sendMessage(Message.obtain(msg));
}
break;
case WifiManager.RSSI_PKTCNT_FETCH: {
if (checkChangePermissionAndReplyIfNotAuthorized(
msg, WifiManager.RSSI_PKTCNT_FETCH_FAILED)) {
mWifiStateMachine.sendMessage(Message.obtain(msg));
}
break;
}
default: {
Slog.d(TAG, "ClientHandler.handleMessage ignoring msg=" + msg);
break;
}
}
}
/**
* Helper method to check if the sender of the message holds the
* {@link Manifest.permission#CHANGE_WIFI_STATE} permission, and reply with a failure if it
* doesn't
*
* @param msg Incoming message.
* @param replyWhat Param to be filled in the {@link Message#what} field of the failure
* reply.
* @return true if the sender holds the permission, false otherwise.
*/
private boolean checkChangePermissionAndReplyIfNotAuthorized(Message msg, int replyWhat) {
if (!mWifiPermissionsUtil.checkChangePermission(msg.sendingUid)) {
Slog.e(TAG, "ClientHandler.handleMessage ignoring unauthorized msg=" + msg);
replyFailed(msg, replyWhat, WifiManager.NOT_AUTHORIZED);
return false;
}
return true;
}
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;
private WifiApConfigStore mWifiApConfigStore;
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);
mScanRequestProxy = mWifiInjector.getScanRequestProxy();
mSettingsStore = mWifiInjector.getWifiSettingsStore();
mPowerManager = mContext.getSystemService(PowerManager.class);
mAppOps = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE);
mActivityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
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();
mWifiApConfigStore = mWifiInjector.getWifiApConfigStore();
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();
mIfaceIpModes = new ConcurrentHashMap<>();
mLocalOnlyHotspotRequests = new HashMap<>();
enableVerboseLoggingInternal(getVerboseLoggingLevel());
mRegisteredSoftApCallbacks = new HashMap<>();
mWifiInjector.getWifiStateMachinePrime().registerSoftApCallback(new SoftApCallbackImpl());
mPowerProfile = mWifiInjector.getPowerProfile();
}
/**
* 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();
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 packageName Package name of the app that requests wifi scan.
*/
@Override
public void startScan(String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return;
}
int callingUid = Binder.getCallingUid();
mLog.info("startScan uid=%").c(callingUid).flush();
synchronized (this) {
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;
}
}
boolean success = mWifiInjector.getWifiStateMachineHandler().runWithScissors(() -> {
if (!mScanRequestProxy.startScan(callingUid, packageName)) {
Log.e(TAG, "Failed to start scan");
}
}, RUN_WITH_SCISSORS_TIMEOUT_MILLIS);
if (!success) {
// TODO: should return false here
Log.e(TAG, "Failed to post runnable to start scan");
sendFailedScanBroadcast();
}
}
// 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);
}
}
/**
* WPS support in Client mode is deprecated. Return null.
*/
@Override
public String getCurrentNetworkWpsNfcConfigurationToken() {
// while CLs are in flight, return null here, will be removed (b/72423090)
enforceConnectivityInternalPermission();
mLog.info("getCurrentNetworkWpsNfcConfigurationToken uid=%")
.c(Binder.getCallingUid()).flush();
return null;
}
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.
// A security check of the caller's identity was made when the request arrived via
// Binder. Now we'll pass the current process's identity to startScan().
startScan(mContext.getOpPackageName());
}
}
private boolean checkNetworkSettingsPermission(int pid, int uid) {
return mContext.checkPermission(android.Manifest.permission.NETWORK_SETTINGS, pid, uid)
== PackageManager.PERMISSION_GRANTED;
}
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");
}
/**
* Checks whether the caller can change the wifi state.
* Possible results:
* 1. Operation is allowed. No exception thrown, and AppOpsManager.MODE_ALLOWED returned.
* 2. Operation is not allowed, and caller must be told about this. SecurityException is thrown.
* 3. Operation is not allowed, and caller must not be told about this (i.e. must silently
* ignore the operation). No exception is thrown, and AppOpsManager.MODE_IGNORED returned.
*/
@CheckResult
private int enforceChangePermission(String callingPackage) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.CHANGE_WIFI_STATE,
"WifiService");
return mAppOps.noteOp(
AppOpsManager.OPSTR_CHANGE_WIFI_STATE, Binder.getCallingUid(), callingPackage);
}
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);
}
/**
* Check if the caller must still pass permission check or if the caller is exempted
* from the consent UI via the MANAGE_WIFI_WHEN_PERMISSION_REVIEW_REQUIRED check.
*
* Commands from some callers may be exempted from triggering the consent UI when
* enabling wifi. This exemption is checked via the MANAGE_WIFI_WHEN_PERMISSION_REVIEW_REQUIRED
* and allows calls to skip the consent UI where it may otherwise be required.
*
* @hide
*/
private boolean checkWifiPermissionWhenPermissionReviewRequired() {
if (!mPermissionReviewRequired) {
return false;
}
int result = mContext.checkCallingPermission(
android.Manifest.permission.MANAGE_WIFI_WHEN_PERMISSION_REVIEW_REQUIRED);
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 {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return false;
}
Slog.d(TAG, "setWifiEnabled: " + enable + " pid=" + Binder.getCallingPid()
+ ", uid=" + Binder.getCallingUid() + ", package=" + packageName);
mLog.info("setWifiEnabled package=% uid=% enable=%").c(packageName)
.c(Binder.getCallingUid()).c(enable).flush();
boolean isFromSettings = checkNetworkSettingsPermission(
Binder.getCallingPid(), Binder.getCallingUid());
// If Airplane mode is enabled, only Settings is allowed to toggle Wifi
if (mSettingsStore.isAirplaneModeOn() && !isFromSettings) {
mLog.info("setWifiEnabled in Airplane mode: only Settings can enable wifi").flush();
return false;
}
// If SoftAp is enabled, only Settings is allowed to toggle wifi
boolean apEnabled = mWifiApState != WifiManager.WIFI_AP_STATE_DISABLED;
if (apEnabled && !isFromSettings) {
mLog.info("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.info("getWifiEnabledState uid=%").c(Binder.getCallingUid()).flush();
return mWifiStateMachine.syncGetWifiState();
}
/**
* 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.info("getWifiApEnabledState uid=%").c(Binder.getCallingUid()).flush();
// hand off work to our handler thread
MutableInt apState = new MutableInt(WifiManager.WIFI_AP_STATE_DISABLED);
mClientHandler.runWithScissors(() -> {
apState.value = mWifiApState;
}, RUN_WITH_SCISSORS_TIMEOUT_MILLIS);
return apState.value;
}
/**
* 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.warn("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.info("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 || WifiApConfigStore.validateApWifiConfiguration(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.info("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.").flush();
}
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;
}
/**
* Callback to use with WifiStateMachine to receive events from WifiStateMachine
*
* @hide
*/
private final class SoftApCallbackImpl implements WifiManager.SoftApCallback {
/**
* Called when soft AP state changes.
*
* @param state new new AP state. One of {@link #WIFI_AP_STATE_DISABLED},
* {@link #WIFI_AP_STATE_DISABLING}, {@link #WIFI_AP_STATE_ENABLED},
* {@link #WIFI_AP_STATE_ENABLING}, {@link #WIFI_AP_STATE_FAILED}
* @param failureReason reason when in failed state. One of
* {@link #SAP_START_FAILURE_GENERAL}, {@link #SAP_START_FAILURE_NO_CHANNEL}
*/
@Override
public void onStateChanged(int state, int failureReason) {
mSoftApState = state;
Iterator<ISoftApCallback> iterator = mRegisteredSoftApCallbacks.values().iterator();
while (iterator.hasNext()) {
ISoftApCallback callback = iterator.next();
try {
callback.onStateChanged(state, failureReason);
} catch (RemoteException e) {
Log.e(TAG, "onStateChanged: remote exception -- " + e);
iterator.remove();
}
}
}
/**
* Called when number of connected clients to soft AP changes.
*
* @param numClients number of connected clients to soft AP
*/
@Override
public void onNumClientsChanged(int numClients) {
mSoftApNumClients = numClients;
Iterator<ISoftApCallback> iterator = mRegisteredSoftApCallbacks.values().iterator();
while (iterator.hasNext()) {
ISoftApCallback callback = iterator.next();
try {
callback.onNumClientsChanged(numClients);
} catch (RemoteException e) {
Log.e(TAG, "onNumClientsChanged: remote exception -- " + e);
iterator.remove();
}
}
}
}
/**
* see {@link android.net.wifi.WifiManager#registerSoftApCallback(SoftApCallback, Handler)}
*
* @param binder IBinder instance to allow cleanup if the app dies
* @param callback Soft AP callback to register
* @param callbackIdentifier Unique ID of the registering callback. This ID will be used to
* unregister the callback. See {@link unregisterSoftApCallback(int)}
*
* @throws SecurityException if the caller does not have permission to register a callback
* @throws RemoteException if remote exception happens
* @throws IllegalArgumentException if the arguments are null or invalid
*/
@Override
public void registerSoftApCallback(IBinder binder, ISoftApCallback callback,
int callbackIdentifier) {
// verify arguments
if (binder == null) {
throw new IllegalArgumentException("Binder must not be null");
}
if (callback == null) {
throw new IllegalArgumentException("Callback must not be null");
}
enforceNetworkSettingsPermission();
// register for binder death
IBinder.DeathRecipient dr = new IBinder.DeathRecipient() {
@Override
public void binderDied() {
binder.unlinkToDeath(this, 0);
mClientHandler.post(() -> {
mRegisteredSoftApCallbacks.remove(callbackIdentifier);
});
}
};
try {
binder.linkToDeath(dr, 0);
} catch (RemoteException e) {
Log.e(TAG, "Error on linkToDeath - " + e);
return;
}
// post operation to handler thread
mClientHandler.post(() -> {
mRegisteredSoftApCallbacks.put(callbackIdentifier, callback);
if (mRegisteredSoftApCallbacks.size() > NUM_SOFT_AP_CALLBACKS_WTF_LIMIT) {
Log.wtf(TAG, "Too many soft AP callbacks: " + mRegisteredSoftApCallbacks.size());
} else if (mRegisteredSoftApCallbacks.size() > NUM_SOFT_AP_CALLBACKS_WARN_LIMIT) {
Log.w(TAG, "Too many soft AP callbacks: " + mRegisteredSoftApCallbacks.size());
}
// Update the client about the current state immediately after registering the callback
try {
callback.onStateChanged(mSoftApState, 0);
callback.onNumClientsChanged(mSoftApNumClients);
} catch (RemoteException e) {
Log.e(TAG, "registerSoftApCallback: remote exception -- " + e);
}
});
}
/**
* see {@link android.net.wifi.WifiManager#unregisterSoftApCallback(SoftApCallback)}
*
* @param callbackIdentifier Unique ID of the callback to be unregistered.
*
* @throws SecurityException if the caller does not have permission to register a callback
*/
@Override
public void unregisterSoftApCallback(int callbackIdentifier) {
enforceNetworkSettingsPermission();
// post operation to handler thread
mClientHandler.post(() -> {
mRegisteredSoftApCallbacks.remove(callbackIdentifier);
});
}
/**
* Private method to handle SoftAp state changes
*
* <p> MUST be called from the WifiStateMachine thread.
*/
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);
// update the tracking ap state variable
mWifiApState = currentState;
// 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.
*/
@GuardedBy("mLocalOnlyHotspotRequests")
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.
*/
@GuardedBy("mLocalOnlyHotspotRequests")
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.
*/
@GuardedBy("mLocalOnlyHotspotRequests")
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();
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return LocalOnlyHotspotCallback.ERROR_GENERIC;
}
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;
}
// the app should be in the foreground
try {
if (!mFrameworkFacade.isAppForeground(uid)) {
return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE;
}
} catch (RemoteException e) {
mLog.warn("RemoteException during isAppForeground when calling startLOHS").flush();
return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE;
}
mLog.info("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.info("Cannot start localOnlyHotspot when WiFi Tethering is active.").flush();
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").flush();
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").flush();
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() {
// don't do a permission check here. if the app's permission to change the wifi state is
// revoked, we still want them to be able to stop a previously created hotspot (otherwise
// it could cost the user money). When the app created the hotspot, its permission was
// checked.
final int uid = Binder.getCallingUid();
final int pid = Binder.getCallingPid();
mLog.info("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").flush();
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) {
// 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.info("getWifiApConfiguration uid=%").c(uid).flush();
// hand off work to the WSM handler thread to sync work between calls and SoftApManager
// starting up softap
final Mutable<WifiConfiguration> config = new Mutable();
boolean success = mWifiInjector.getWifiStateMachineHandler().runWithScissors(() -> {
config.value = mWifiApConfigStore.getApConfiguration();
}, RUN_WITH_SCISSORS_TIMEOUT_MILLIS);
if (success) {
return config.value;
}
Log.e(TAG, "Failed to post runnable to fetch ap config");
return new WifiConfiguration();
}
/**
* see {@link WifiManager#setWifiApConfiguration(WifiConfiguration)}
* @param wifiConfig WifiConfiguration details for soft access point
* @return boolean indicating success or failure of the operation
* @throws SecurityException if the caller does not have permission to write the softap config
*/
@Override
public boolean setWifiApConfiguration(WifiConfiguration wifiConfig, String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return false;
}
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.info("setWifiApConfiguration uid=%").c(uid).flush();
if (wifiConfig == null)
return false;
if (WifiApConfigStore.validateApWifiConfiguration(wifiConfig)) {
mWifiStateMachineHandler.post(() -> {
mWifiApConfigStore.setApConfiguration(wifiConfig);
});
return true;
} else {
Slog.e(TAG, "Invalid WifiConfiguration");
return false;
}
}
/**
* see {@link android.net.wifi.WifiManager#isScanAlwaysAvailable()}
*/
@Override
public boolean isScanAlwaysAvailable() {
enforceAccessPermission();
mLog.info("isScanAlwaysAvailable uid=%").c(Binder.getCallingUid()).flush();
return mSettingsStore.isScanAlwaysAvailable();
}
/**
* see {@link android.net.wifi.WifiManager#disconnect()}
*/
@Override
public void disconnect(String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return;
}
mLog.info("disconnect uid=%").c(Binder.getCallingUid()).flush();
mWifiStateMachine.disconnectCommand();
}
/**
* see {@link android.net.wifi.WifiManager#reconnect()}
*/
@Override
public void reconnect(String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return;
}
mLog.info("reconnect uid=%").c(Binder.getCallingUid()).flush();
mWifiStateMachine.reconnectCommand(new WorkSource(Binder.getCallingUid()));
}
/**
* see {@link android.net.wifi.WifiManager#reassociate()}
*/
@Override
public void reassociate(String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return;
}
mLog.info("reassociate uid=%").c(Binder.getCallingUid()).flush();
mWifiStateMachine.reassociateCommand();
}
/**
* see {@link android.net.wifi.WifiManager#getSupportedFeatures}
*/
@Override
public int getSupportedFeatures() {
enforceAccessPermission();
mLog.info("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.info("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.info("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 double rxIdleCurrent = mPowerProfile.getAveragePower(
PowerProfile.POWER_WIFI_CONTROLLER_IDLE);
final double rxCurrent = mPowerProfile.getAveragePower(
PowerProfile.POWER_WIFI_CONTROLLER_RX);
final double txCurrent = mPowerProfile.getAveragePower(
PowerProfile.POWER_WIFI_CONTROLLER_TX);
final double voltage = mPowerProfile.getAveragePower(
PowerProfile.POWER_WIFI_CONTROLLER_OPERATING_VOLTAGE) / 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 || stats.on_time_scan < 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(" scan_time=" + stats.on_time_scan);
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, stats.on_time_scan, 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<WifiConfiguration> getConfiguredNetworks() {
enforceAccessPermission();
mLog.info("getConfiguredNetworks uid=%").c(Binder.getCallingUid()).flush();
if (mWifiStateMachineChannel != null) {
List<WifiConfiguration> configs = mWifiStateMachine.syncGetConfiguredNetworks(
Binder.getCallingUid(), mWifiStateMachineChannel);
if (configs != null) {
return new ParceledListSlice<WifiConfiguration>(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<WifiConfiguration> getPrivilegedConfiguredNetworks() {
enforceReadCredentialPermission();
enforceAccessPermission();
mLog.info("getPrivilegedConfiguredNetworks uid=%").c(Binder.getCallingUid()).flush();
if (mWifiStateMachineChannel != null) {
List<WifiConfiguration> configs =
mWifiStateMachine.syncGetPrivilegedConfiguredNetwork(mWifiStateMachineChannel);
if (configs != null) {
return new ParceledListSlice<WifiConfiguration>(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.info("getMatchingWifiConfig uid=%").c(Binder.getCallingUid()).flush();
if (!mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_PASSPOINT)) {
throw new UnsupportedOperationException("Passpoint not enabled");
}
return mWifiStateMachine.syncGetMatchingWifiConfig(scanResult, mWifiStateMachineChannel);
}
/**
* Return the list of all matching Wifi configurations for this ScanResult.
*
* An empty list will be returned when no configurations are installed or if no configurations
* match the ScanResult.
*
* @param scanResult scanResult that represents the BSSID
* @return A list of {@link WifiConfiguration}
*/
@Override
public List<WifiConfiguration> getAllMatchingWifiConfigs(ScanResult scanResult) {
enforceAccessPermission();
mLog.info("getMatchingPasspointConfigurations uid=%").c(Binder.getCallingUid()).flush();
if (!mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_PASSPOINT)) {
throw new UnsupportedOperationException("Passpoint not enabled");
}
return mWifiStateMachine.getAllMatchingWifiConfigs(scanResult, mWifiStateMachineChannel);
}
/**
* Returns list of OSU (Online Sign-Up) providers associated with the given Passpoint network.
*
* @param scanResult scanResult of the Passpoint AP
* @return List of {@link OsuProvider}
*/
@Override
public List<OsuProvider> getMatchingOsuProviders(ScanResult scanResult) {
enforceAccessPermission();
mLog.info("getMatchingOsuProviders uid=%").c(Binder.getCallingUid()).flush();
if (!mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_PASSPOINT)) {
throw new UnsupportedOperationException("Passpoint not enabled");
}
return mWifiStateMachine.syncGetMatchingOsuProviders(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, String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return -1;
}
mLog.info("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, packageName)) {
Slog.e(TAG, "Failed to add Passpoint profile");
return -1;
}
// There is no network ID associated with a Passpoint profile.
return 0;
}
if (config != null) {
//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, String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return false;
}
mLog.info("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, String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return false;
}
// TODO b/33807876 Log netId
mLog.info("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, String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return false;
}
// TODO b/33807876 Log netId
mLog.info("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(String callingPackage) {
enforceAccessPermission();
int uid = Binder.getCallingUid();
mLog.info("getConnectionInfo uid=%").c(uid).flush();
long ident = Binder.clearCallingIdentity();
try {
WifiInfo result = mWifiStateMachine.syncRequestConnectionInfo();
boolean hideDefaultMacAddress = true;
boolean hideBssidAndSsid = true;
try {
if (mWifiInjector.getWifiPermissionsWrapper().getLocalMacAddressPermission(uid)
== PackageManager.PERMISSION_GRANTED) {
hideDefaultMacAddress = false;
}
mWifiPermissionsUtil.enforceCanAccessScanResults(callingPackage, uid);
hideBssidAndSsid = false;
} catch (RemoteException e) {
Log.e(TAG, "Error checking receiver permission", e);
} catch (SecurityException e) {
Log.e(TAG, "Security exception checking receiver permission"
+ ", hiding ssid and bssid", e);
}
if (hideDefaultMacAddress) {
result.setMacAddress(WifiInfo.DEFAULT_MAC_ADDRESS);
}
if (hideBssidAndSsid) {
result.setBSSID(WifiInfo.DEFAULT_MAC_ADDRESS);
result.setSSID(WifiSsid.createFromHex(null));
}
return result;
} finally {
Binder.restoreCallingIdentity(ident);
}
}
/**
* 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<ScanResult> getScanResults(String callingPackage) {
enforceAccessPermission();
int uid = Binder.getCallingUid();
long ident = Binder.clearCallingIdentity();
try {
mWifiPermissionsUtil.enforceCanAccessScanResults(callingPackage, uid);
final List<ScanResult> scanResults = new ArrayList<>();
boolean success = mWifiInjector.getWifiStateMachineHandler().runWithScissors(() -> {
scanResults.addAll(mScanRequestProxy.getScanResults());
}, RUN_WITH_SCISSORS_TIMEOUT_MILLIS);
if (!success) {
Log.e(TAG, "Failed to post runnable to fetch scan results");
}
return scanResults;
} catch (SecurityException e) {
return new ArrayList<ScanResult>();
} 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, String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return false;
}
mLog.info("addorUpdatePasspointConfiguration uid=%").c(Binder.getCallingUid()).flush();
if (!mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_PASSPOINT)) {
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, String packageName) {
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return false;
}
mLog.info("removePasspointConfiguration uid=%").c(Binder.getCallingUid()).flush();
if (!mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_PASSPOINT)) {
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<PasspointConfiguration> getPasspointConfigurations() {
enforceAccessPermission();
mLog.info("getPasspointConfigurations uid=%").c(Binder.getCallingUid()).flush();
if (!mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_PASSPOINT)) {
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.info("queryPasspointIcon uid=%").c(Binder.getCallingUid()).flush();
if (!mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_PASSPOINT)) {
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.info("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.info("deauthenticateNetwork uid=%").c(Binder.getCallingUid()).flush();
mWifiStateMachine.deauthenticateNetwork(mWifiStateMachineChannel, holdoff, ess);
}
/**
* Set the country code
* @param countryCode ISO 3166 country code.
*
*/
@Override
public void setCountryCode(String countryCode) {
Slog.i(TAG, "WifiService trying to set country code to " + countryCode);
enforceConnectivityInternalPermission();
mLog.info("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.info("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.info("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.info("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<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;
}
}
@Override
public void enableTdls(String remoteAddress, boolean enable) {
if (remoteAddress == null) {
throw new IllegalArgumentException("remoteAddress cannot be null");
}
mLog.info("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.info("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(String packageName) throws RemoteException {
enforceAccessPermission();
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
// We don't have a good way of creating a fake Messenger, and returning null would
// immediately break callers.
throw new SecurityException("Could not create wifi service messenger");
}
mLog.info("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, String packageName) {
enforceAccessPermission();
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return;
}
mLog.info("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_USER_PRESENT)) {
mWifiController.sendMessage(CMD_USER_PRESENT);
} 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
|| checkWifiPermissionWhenPermissionReviewRequired()) {
return false;
}
try {
// Validate the package only if we are going to use it
ApplicationInfo applicationInfo = mContext.getPackageManager()
.getApplicationInfoAsUser(packageName,
PackageManager.MATCH_DEBUG_TRIAGED_MISSING,
UserHandle.getUserId(callingUid));
if (applicationInfo.uid != callingUid) {
throw new SecurityException("Package " + packageName
+ " not in uid " + callingUid);
}
// 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);
}
private void registerForBroadcasts() {
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_USER_PRESENT);
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
public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err,
String[] args, ShellCallback callback, ResultReceiver resultReceiver) {
(new WifiShellCommand(mWifiStateMachine)).exec(this, in, out, err, args, callback,
resultReceiver);
}
@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 && IpClient.DUMP_ARG.equals(args[0])) {
// IpClient dump was requested. Pass it along and take no further action.
String[] ipClientArgs = new String[args.length - 1];
System.arraycopy(args, 1, ipClientArgs, 0, ipClientArgs.length);
mWifiStateMachine.dumpIpClient(fd, pw, ipClientArgs);
} else if (args != null && args.length > 0 && WifiScoreReport.DUMP_ARG.equals(args[0])) {
WifiScoreReport wifiScoreReport = mWifiStateMachine.getWifiScoreReport();
if (wifiScoreReport != null) wifiScoreReport.dump(fd, pw, args);
} 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);
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();
pw.println("ScoringParams: settings put global " + Settings.Global.WIFI_SCORE_PARAMS
+ " " + mWifiInjector.getScoringParams());
pw.println();
WifiScoreReport wifiScoreReport = mWifiStateMachine.getWifiScoreReport();
if (wifiScoreReport != null) {
pw.println("WifiScoreReport:");
wifiScoreReport.dump(fd, pw, args);
}
pw.println();
}
}
/**
* NOTE: WifiLocks do not serve a useful purpose in their current impl and will be removed
* (including the methods below).
*
* TODO: b/71548157
*/
@Override
public boolean acquireWifiLock(IBinder binder, int lockMode, String tag, WorkSource ws) {
mLog.info("acquireWifiLock uid=% lockMode=%")
.c(Binder.getCallingUid())
.c(lockMode).flush();
if (mWifiLockManager.acquireWifiLock(lockMode, tag, binder, ws)) {
return true;
}
return false;
}
@Override
public void updateWifiLockWorkSource(IBinder binder, WorkSource ws) {
mLog.info("updateWifiLockWorkSource uid=%").c(Binder.getCallingUid()).flush();
mWifiLockManager.updateWifiLockWorkSource(binder, ws);
}
@Override
public boolean releaseWifiLock(IBinder binder) {
mLog.info("releaseWifiLock uid=%").c(Binder.getCallingUid()).flush();
if (mWifiLockManager.releaseWifiLock(binder)) {
return true;
}
return false;
}
@Override
public void initializeMulticastFiltering() {
enforceMulticastChangePermission();
mLog.info("initializeMulticastFiltering uid=%").c(Binder.getCallingUid()).flush();
mWifiMulticastLockManager.initializeFiltering();
}
@Override
public void acquireMulticastLock(IBinder binder, String tag) {
enforceMulticastChangePermission();
mLog.info("acquireMulticastLock uid=%").c(Binder.getCallingUid()).flush();
mWifiMulticastLockManager.acquireLock(binder, tag);
}
@Override
public void releaseMulticastLock() {
enforceMulticastChangePermission();
mLog.info("releaseMulticastLock uid=%").c(Binder.getCallingUid()).flush();
mWifiMulticastLockManager.releaseLock();
}
@Override
public boolean isMulticastEnabled() {
enforceAccessPermission();
mLog.info("isMulticastEnabled uid=%").c(Binder.getCallingUid()).flush();
return mWifiMulticastLockManager.isMulticastEnabled();
}
@Override
public void enableVerboseLogging(int verbose) {
enforceAccessPermission();
enforceNetworkSettingsPermission();
mLog.info("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.enableVerboseLogging(verbose);
}
@Override
public int getVerboseLoggingLevel() {
enforceAccessPermission();
mLog.info("getVerboseLoggingLevel uid=%").c(Binder.getCallingUid()).flush();
return mFacade.getIntegerSetting(
mContext, Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED, 0);
}
@Override
public void factoryReset(String packageName) {
enforceConnectivityInternalPermission();
if (enforceChangePermission(packageName) != MODE_ALLOWED) {
return;
}
mLog.info("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)) {
// Delete all Wifi SSIDs
if (mWifiStateMachineChannel != null) {
List<WifiConfiguration> networks = mWifiStateMachine.syncGetConfiguredNetworks(
Binder.getCallingUid(), mWifiStateMachineChannel);
if (networks != null) {
for (WifiConfiguration config : networks) {
removeNetwork(config.networkId, packageName);
}
}
}
}
}
/* private methods */
static boolean logAndReturnFalse(String s) {
Log.d(TAG, s);
return false;
}
@Override
public Network getCurrentNetwork() {
enforceAccessPermission();
mLog.info("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();
}
/**
* Enable/disable WifiConnectivityManager at runtime
*
* @param enabled true-enable; false-disable
*/
@Override
public void enableWifiConnectivityManager(boolean enabled) {
enforceConnectivityInternalPermission();
mLog.info("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.info("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<WifiConfiguration> 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<WifiConfiguration> 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.info("restoreBackupData uid=%").c(Binder.getCallingUid()).flush();
if (mWifiStateMachineChannel == null) {
Slog.e(TAG, "mWifiStateMachineChannel is not initialized");
return;
}
Slog.d(TAG, "Restoring backup data");
List<WifiConfiguration> 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<WifiConfiguration> wifiConfigurations =
mWifiBackupRestore.retrieveConfigurationsFromSupplicantBackupData(
supplicantData, ipConfigData);
restoreNetworks(wifiConfigurations);
Slog.d(TAG, "Restored supplicant backup data");
}
/**
* Starts subscription provisioning with a provider
*
* @param provider {@link OsuProvider} the provider to provision with
* @param callback {@link IProvisoningCallback} the callback object to inform status
*/
@Override
public void startSubscriptionProvisioning(OsuProvider provider,
IProvisioningCallback callback) {
if (provider == null) {
throw new IllegalArgumentException("Provider must not be null");
}
if (callback == null) {
throw new IllegalArgumentException("Callback must not be null");
}
enforceNetworkSettingsPermission();
if (!mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_PASSPOINT)) {
throw new UnsupportedOperationException("Passpoint not enabled");
}
final int uid = Binder.getCallingUid();
mLog.trace("startSubscriptionProvisioning uid=%").c(uid).flush();
if (mWifiStateMachine.syncStartSubscriptionProvisioning(uid, provider,
callback, mWifiStateMachineChannel)) {
mLog.trace("Subscription provisioning started with %")
.c(provider.toString()).flush();
}
}
}