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/*
* Copyright (C) 2020 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.settings;
import static android.net.ConnectivityManager.TETHERING_WIFI;
import static android.net.TetheringManager.ACTION_TETHER_STATE_CHANGED;
import static android.net.wifi.WifiManager.WIFI_AP_STATE_CHANGED_ACTION;
import android.app.settings.SettingsEnums;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothPan;
import android.bluetooth.BluetoothProfile;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.wifi.SoftApConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.UserManager;
import android.text.TextUtils;
import android.util.FeatureFlagUtils;
import android.util.Log;
import androidx.annotation.VisibleForTesting;
import androidx.preference.Preference;
import androidx.preference.PreferenceGroup;
import com.android.settings.core.FeatureFlags;
import com.android.settings.dashboard.RestrictedDashboardFragment;
import com.android.settings.datausage.DataSaverBackend;
import com.android.settings.network.BluetoothTetherPreferenceController;
import com.android.settings.network.EthernetTetherPreferenceController;
import com.android.settings.network.TetherEnabler;
import com.android.settings.network.UsbTetherPreferenceController;
import com.android.settings.network.WifiTetherDisablePreferenceController;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.widget.MainSwitchBarController;
import com.android.settings.widget.SettingsMainSwitchBar;
import com.android.settings.wifi.tether.WifiTetherApBandPreferenceController;
import com.android.settings.wifi.tether.WifiTetherAutoOffPreferenceController;
import com.android.settings.wifi.tether.WifiTetherBasePreferenceController;
import com.android.settings.wifi.tether.WifiTetherFooterPreferenceController;
import com.android.settings.wifi.tether.WifiTetherPasswordPreferenceController;
import com.android.settings.wifi.tether.WifiTetherSSIDPreferenceController;
import com.android.settings.wifi.tether.WifiTetherSecurityPreferenceController;
import com.android.settingslib.TetherUtil;
import com.android.settingslib.core.AbstractPreferenceController;
import com.android.settingslib.search.SearchIndexable;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicReference;
/**
* Displays preferences for all Tethering options.
*/
@SearchIndexable
public class AllInOneTetherSettings extends RestrictedDashboardFragment
implements DataSaverBackend.Listener,
WifiTetherBasePreferenceController.OnTetherConfigUpdateListener {
// TODO(b/148622133): Should clean up the postfix once this fragment replaced TetherSettings.
public static final String DEDUP_POSTFIX = "_2";
@VisibleForTesting
static final String KEY_WIFI_TETHER_NETWORK_NAME = "wifi_tether_network_name" + DEDUP_POSTFIX;
@VisibleForTesting
static final String KEY_WIFI_TETHER_NETWORK_PASSWORD =
"wifi_tether_network_password" + DEDUP_POSTFIX;
@VisibleForTesting
static final String KEY_WIFI_TETHER_AUTO_OFF = "wifi_tether_auto_turn_off" + DEDUP_POSTFIX;
@VisibleForTesting
static final String KEY_WIFI_TETHER_NETWORK_AP_BAND =
"wifi_tether_network_ap_band" + DEDUP_POSTFIX;
@VisibleForTesting
static final String KEY_WIFI_TETHER_SECURITY = "wifi_tether_security" + DEDUP_POSTFIX;
private static final String KEY_DATA_SAVER_FOOTER = "disabled_on_data_saver" + DEDUP_POSTFIX;
private static final String KEY_WIFI_TETHER_GROUP = "wifi_tether_settings_group";
public static final String WIFI_TETHER_DISABLE_KEY = "disable_wifi_tethering";
public static final String USB_TETHER_KEY = "enable_usb_tethering";
public static final String BLUETOOTH_TETHER_KEY = "enable_bluetooth_tethering" + DEDUP_POSTFIX;
public static final String ETHERNET_TETHER_KEY = "enable_ethernet_tethering" + DEDUP_POSTFIX;
@VisibleForTesting
static final int EXPANDED_CHILD_COUNT_DEFAULT = 4;
@VisibleForTesting
static final int EXPANDED_CHILD_COUNT_WITH_SECURITY_NON = 3;
@VisibleForTesting
static final int EXPANDED_CHILD_COUNT_MAX = Integer.MAX_VALUE;
private static final String TAG = "AllInOneTetherSettings";
private boolean mUnavailable;
private DataSaverBackend mDataSaverBackend;
private boolean mDataSaverEnabled;
private Preference mDataSaverFooter;
private WifiManager mWifiManager;
private boolean mRestartWifiApAfterConfigChange;
private final AtomicReference<BluetoothPan> mBluetoothPan = new AtomicReference<>();
private WifiTetherSSIDPreferenceController mSSIDPreferenceController;
private WifiTetherPasswordPreferenceController mPasswordPreferenceController;
private WifiTetherApBandPreferenceController mApBandPreferenceController;
private WifiTetherSecurityPreferenceController mSecurityPreferenceController;
private PreferenceGroup mWifiTetherGroup;
private boolean mShouldShowWifiConfig = true;
private boolean mHasShownAdvance;
private TetherEnabler mTetherEnabler;
@VisibleForTesting
final TetherEnabler.OnTetherStateUpdateListener mStateUpdateListener =
state -> {
mShouldShowWifiConfig = TetherEnabler.isTethering(state, TETHERING_WIFI)
|| state == TetherEnabler.TETHERING_OFF;
getPreferenceScreen().setInitialExpandedChildrenCount(
getInitialExpandedChildCount());
mWifiTetherGroup.setVisible(mShouldShowWifiConfig);
};
private final BroadcastReceiver mTetherChangeReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context content, Intent intent) {
String action = intent.getAction();
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG,
"updating display config due to receiving broadcast action " + action);
}
updateDisplayWithNewConfig();
if (TextUtils.equals(action, ACTION_TETHER_STATE_CHANGED)) {
restartWifiTetherIfNeed(mWifiManager.getWifiApState());
} else if (TextUtils.equals(action, WIFI_AP_STATE_CHANGED_ACTION)) {
restartWifiTetherIfNeed(intent.getIntExtra(WifiManager.EXTRA_WIFI_AP_STATE, 0));
}
}
private void restartWifiTetherIfNeed(int state) {
if (state == WifiManager.WIFI_AP_STATE_DISABLED
&& mRestartWifiApAfterConfigChange) {
mRestartWifiApAfterConfigChange = false;
mTetherEnabler.startTethering(TETHERING_WIFI);
}
}
};
private final BluetoothProfile.ServiceListener mProfileServiceListener =
new BluetoothProfile.ServiceListener() {
public void onServiceConnected(int profile, BluetoothProfile proxy) {
mBluetoothPan.set((BluetoothPan) proxy);
}
public void onServiceDisconnected(int profile) {
mBluetoothPan.set(null);
}
};
@Override
public int getMetricsCategory() {
return SettingsEnums.TETHER;
}
public AllInOneTetherSettings() {
super(UserManager.DISALLOW_CONFIG_TETHERING);
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
mSSIDPreferenceController = use(WifiTetherSSIDPreferenceController.class);
mSecurityPreferenceController = use(WifiTetherSecurityPreferenceController.class);
mPasswordPreferenceController = use(WifiTetherPasswordPreferenceController.class);
mApBandPreferenceController = use(WifiTetherApBandPreferenceController.class);
getSettingsLifecycle().addObserver(use(UsbTetherPreferenceController.class));
getSettingsLifecycle().addObserver(use(BluetoothTetherPreferenceController.class));
getSettingsLifecycle().addObserver(use(EthernetTetherPreferenceController.class));
getSettingsLifecycle().addObserver(use(WifiTetherDisablePreferenceController.class));
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mDataSaverBackend = new DataSaverBackend(getContext());
mDataSaverEnabled = mDataSaverBackend.isDataSaverEnabled();
mDataSaverFooter = findPreference(KEY_DATA_SAVER_FOOTER);
mWifiTetherGroup = findPreference(KEY_WIFI_TETHER_GROUP);
setIfOnlyAvailableForAdmins(true);
if (isUiRestricted()) {
mUnavailable = true;
return;
}
mDataSaverBackend.addListener(this);
// Set initial state based on Data Saver mode.
onDataSaverChanged(mDataSaverBackend.isDataSaverEnabled());
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if (mUnavailable) {
return;
}
// Assume we are in a SettingsActivity. This is only safe because we currently use
// SettingsActivity as base for all preference fragments.
final SettingsActivity activity = (SettingsActivity) getActivity();
final BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
if (adapter != null) {
adapter.getProfileProxy(activity.getApplicationContext(), mProfileServiceListener,
BluetoothProfile.PAN);
}
final SettingsMainSwitchBar mainSwitch = activity.getSwitchBar();
mTetherEnabler = new TetherEnabler(activity,
new MainSwitchBarController(mainSwitch), mBluetoothPan);
getSettingsLifecycle().addObserver(mTetherEnabler);
use(UsbTetherPreferenceController.class).setTetherEnabler(mTetherEnabler);
use(BluetoothTetherPreferenceController.class).setTetherEnabler(mTetherEnabler);
use(EthernetTetherPreferenceController.class).setTetherEnabler(mTetherEnabler);
use(WifiTetherDisablePreferenceController.class).setTetherEnabler(mTetherEnabler);
mainSwitch.show();
}
@Override
public void onStart() {
super.onStart();
if (mUnavailable) {
if (!isUiRestrictedByOnlyAdmin()) {
getEmptyTextView().setText(R.string.tethering_settings_not_available);
}
getPreferenceScreen().removeAll();
return;
}
final Context context = getContext();
if (context != null) {
IntentFilter filter = new IntentFilter(ACTION_TETHER_STATE_CHANGED);
filter.addAction(WIFI_AP_STATE_CHANGED_ACTION);
context.registerReceiver(mTetherChangeReceiver, filter);
}
}
@Override
public void onResume() {
super.onResume();
if (mUnavailable) {
return;
}
if (mTetherEnabler != null) {
mTetherEnabler.addListener(mStateUpdateListener);
}
}
@Override
public void onPause() {
super.onPause();
if (mUnavailable) {
return;
}
if (mTetherEnabler != null) {
mTetherEnabler.removeListener(mStateUpdateListener);
}
}
@Override
public void onStop() {
super.onStop();
if (mUnavailable) {
return;
}
final Context context = getContext();
if (context != null) {
context.unregisterReceiver(mTetherChangeReceiver);
}
}
@Override
public void onDestroy() {
mDataSaverBackend.remListener(this);
super.onDestroy();
}
@Override
public void onDataSaverChanged(boolean isDataSaving) {
mDataSaverEnabled = isDataSaving;
mDataSaverFooter.setVisible(mDataSaverEnabled);
}
@Override
public void onAllowlistStatusChanged(int uid, boolean isAllowlisted) {
// Do nothing
}
@Override
public void onDenylistStatusChanged(int uid, boolean isDenylisted) {
// Do nothing
}
@Override
protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
return buildPreferenceControllers(context, this);
}
private static List<AbstractPreferenceController> buildPreferenceControllers(Context context,
WifiTetherBasePreferenceController.OnTetherConfigUpdateListener listener) {
final List<AbstractPreferenceController> controllers = new ArrayList<>();
controllers.add(
new WifiTetherSSIDPreferenceController(context, listener));
controllers.add(
new WifiTetherPasswordPreferenceController(context, listener));
controllers.add(
new WifiTetherApBandPreferenceController(context, listener));
controllers.add(
new WifiTetherSecurityPreferenceController(context, listener));
controllers.add(
new WifiTetherAutoOffPreferenceController(context, KEY_WIFI_TETHER_AUTO_OFF));
controllers.add(
new WifiTetherFooterPreferenceController(context));
return controllers;
}
@Override
protected int getPreferenceScreenResId() {
return R.xml.all_tether_prefs;
}
@Override
protected String getLogTag() {
return TAG;
}
@Override
public int getHelpResource() {
return R.string.help_url_tether;
}
@Override
public void onTetherConfigUpdated(AbstractPreferenceController controller) {
final SoftApConfiguration config = buildNewConfig();
mPasswordPreferenceController.setSecurityType(config.getSecurityType());
mWifiManager.setSoftApConfiguration(config);
if (mWifiManager.getWifiApState() == WifiManager.WIFI_AP_STATE_ENABLED) {
if (Log.isLoggable(TAG, Log.DEBUG)) {
Log.d(TAG, "Wifi AP config changed while enabled, stop and restart");
}
mRestartWifiApAfterConfigChange = true;
mTetherEnabler.stopTethering(TETHERING_WIFI);
}
}
private SoftApConfiguration buildNewConfig() {
final SoftApConfiguration.Builder configBuilder = new SoftApConfiguration.Builder();
final int securityType = mSecurityPreferenceController.getSecurityType();
configBuilder.setSsid(mSSIDPreferenceController.getSSID());
if (securityType == SoftApConfiguration.SECURITY_TYPE_WPA2_PSK) {
configBuilder.setPassphrase(
mPasswordPreferenceController.getPasswordValidated(securityType),
SoftApConfiguration.SECURITY_TYPE_WPA2_PSK);
}
configBuilder.setBand(mApBandPreferenceController.getBandIndex());
return configBuilder.build();
}
private void updateDisplayWithNewConfig() {
mSSIDPreferenceController.updateDisplay();
mSecurityPreferenceController.updateDisplay();
mPasswordPreferenceController.updateDisplay();
mApBandPreferenceController.updateDisplay();
}
@Override
public int getInitialExpandedChildCount() {
if (mHasShownAdvance || !mShouldShowWifiConfig) {
mHasShownAdvance = true;
return EXPANDED_CHILD_COUNT_MAX;
}
if (mSecurityPreferenceController == null) {
return EXPANDED_CHILD_COUNT_DEFAULT;
}
return (mSecurityPreferenceController.getSecurityType()
== SoftApConfiguration.SECURITY_TYPE_OPEN)
? EXPANDED_CHILD_COUNT_WITH_SECURITY_NON : EXPANDED_CHILD_COUNT_DEFAULT;
}
@Override
public void onExpandButtonClick() {
super.onExpandButtonClick();
mHasShownAdvance = true;
}
public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
new BaseSearchIndexProvider(R.xml.all_tether_prefs) {
@Override
public List<String> getNonIndexableKeys(Context context) {
final List<String> keys = super.getNonIndexableKeys(context);
if (!TetherUtil.isTetherAvailable(context)) {
keys.add(KEY_WIFI_TETHER_NETWORK_NAME);
keys.add(KEY_WIFI_TETHER_NETWORK_PASSWORD);
keys.add(KEY_WIFI_TETHER_AUTO_OFF);
keys.add(KEY_WIFI_TETHER_NETWORK_AP_BAND);
keys.add(KEY_WIFI_TETHER_SECURITY);
}
return keys;
}
@Override
protected boolean isPageSearchEnabled(Context context) {
return FeatureFlagUtils.isEnabled(context, FeatureFlags.TETHER_ALL_IN_ONE);
}
@Override
public List<AbstractPreferenceController> createPreferenceControllers(
Context context) {
return buildPreferenceControllers(context, null /*listener*/);
}
};
}