/*
* Copyright (C) 2008 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 android.app.Activity;
import android.app.Dialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothPan;
import android.bluetooth.BluetoothProfile;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.hardware.usb.UsbManager;
import android.net.ConnectivityManager;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.UserManager;
import android.support.v14.preference.SwitchPreference;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.util.Log;
import com.android.internal.logging.MetricsProto.MetricsEvent;
import com.android.settings.datausage.DataSaverBackend;
import com.android.settings.wifi.WifiApDialog;
import com.android.settings.wifi.WifiApEnabler;
import com.android.settingslib.TetherUtil;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.concurrent.atomic.AtomicReference;
import static android.net.ConnectivityManager.TETHERING_BLUETOOTH;
import static android.net.ConnectivityManager.TETHERING_USB;
import static android.net.ConnectivityManager.TETHERING_WIFI;
/*
* Displays preferences for Tethering.
*/
public class TetherSettings extends RestrictedSettingsFragment
implements DialogInterface.OnClickListener, Preference.OnPreferenceChangeListener,
DataSaverBackend.Listener {
private static final String USB_TETHER_SETTINGS = "usb_tether_settings";
private static final String ENABLE_WIFI_AP = "enable_wifi_ap";
private static final String ENABLE_BLUETOOTH_TETHERING = "enable_bluetooth_tethering";
private static final String TETHER_CHOICE = "TETHER_TYPE";
private static final String DATA_SAVER_FOOTER = "disabled_on_data_saver";
private static final int DIALOG_AP_SETTINGS = 1;
private static final String TAG = "TetheringSettings";
private SwitchPreference mUsbTether;
private WifiApEnabler mWifiApEnabler;
private SwitchPreference mEnableWifiAp;
private SwitchPreference mBluetoothTether;
private BroadcastReceiver mTetherChangeReceiver;
private String[] mUsbRegexs;
private String[] mWifiRegexs;
private String[] mBluetoothRegexs;
private AtomicReference<BluetoothPan> mBluetoothPan = new AtomicReference<BluetoothPan>();
private Handler mHandler = new Handler();
private OnStartTetheringCallback mStartTetheringCallback;
private static final String WIFI_AP_SSID_AND_SECURITY = "wifi_ap_ssid_and_security";
private static final int CONFIG_SUBTEXT = R.string.wifi_tether_configure_subtext;
private String[] mSecurityType;
private Preference mCreateNetwork;
private WifiApDialog mDialog;
private WifiManager mWifiManager;
private WifiConfiguration mWifiConfig = null;
private ConnectivityManager mCm;
private boolean mRestartWifiApAfterConfigChange;
private boolean mUsbConnected;
private boolean mMassStorageActive;
private boolean mBluetoothEnableForTether;
/* Stores the package name and the class name of the provisioning app */
private String[] mProvisionApp;
private static final int PROVISION_REQUEST = 0;
private boolean mUnavailable;
private DataSaverBackend mDataSaverBackend;
private boolean mDataSaverEnabled;
private Preference mDataSaverFooter;
@Override
protected int getMetricsCategory() {
return MetricsEvent.TETHER;
}
public TetherSettings() {
super(UserManager.DISALLOW_CONFIG_TETHERING);
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
addPreferencesFromResource(R.xml.tether_prefs);
mDataSaverBackend = new DataSaverBackend(getContext());
mDataSaverEnabled = mDataSaverBackend.isDataSaverEnabled();
mDataSaverFooter = findPreference(DATA_SAVER_FOOTER);
setIfOnlyAvailableForAdmins(true);
if (isUiRestricted()) {
mUnavailable = true;
setPreferenceScreen(new PreferenceScreen(getPrefContext(), null));
return;
}
final Activity activity = getActivity();
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
if (adapter != null) {
adapter.getProfileProxy(activity.getApplicationContext(), mProfileServiceListener,
BluetoothProfile.PAN);
}
mEnableWifiAp =
(SwitchPreference) findPreference(ENABLE_WIFI_AP);
Preference wifiApSettings = findPreference(WIFI_AP_SSID_AND_SECURITY);
mUsbTether = (SwitchPreference) findPreference(USB_TETHER_SETTINGS);
mBluetoothTether = (SwitchPreference) findPreference(ENABLE_BLUETOOTH_TETHERING);
mDataSaverBackend.addListener(this);
mCm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
mUsbRegexs = mCm.getTetherableUsbRegexs();
mWifiRegexs = mCm.getTetherableWifiRegexs();
mBluetoothRegexs = mCm.getTetherableBluetoothRegexs();
final boolean usbAvailable = mUsbRegexs.length != 0;
final boolean wifiAvailable = mWifiRegexs.length != 0;
final boolean bluetoothAvailable = mBluetoothRegexs.length != 0;
if (!usbAvailable || Utils.isMonkeyRunning()) {
getPreferenceScreen().removePreference(mUsbTether);
}
if (wifiAvailable && !Utils.isMonkeyRunning()) {
mWifiApEnabler = new WifiApEnabler(activity, mDataSaverBackend, mEnableWifiAp);
initWifiTethering();
} else {
getPreferenceScreen().removePreference(mEnableWifiAp);
getPreferenceScreen().removePreference(wifiApSettings);
}
if (!bluetoothAvailable) {
getPreferenceScreen().removePreference(mBluetoothTether);
} else {
BluetoothPan pan = mBluetoothPan.get();
if (pan != null && pan.isTetheringOn()) {
mBluetoothTether.setChecked(true);
} else {
mBluetoothTether.setChecked(false);
}
}
// Set initial state based on Data Saver mode.
onDataSaverChanged(mDataSaverBackend.isDataSaverEnabled());
}
@Override
public void onDestroy() {
mDataSaverBackend.remListener(this);
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
BluetoothProfile profile = mBluetoothPan.getAndSet(null);
if (profile != null && adapter != null) {
adapter.closeProfileProxy(BluetoothProfile.PAN, profile);
}
super.onDestroy();
}
@Override
public void onDataSaverChanged(boolean isDataSaving) {
mDataSaverEnabled = isDataSaving;
mEnableWifiAp.setEnabled(!mDataSaverEnabled);
mUsbTether.setEnabled(!mDataSaverEnabled);
mBluetoothTether.setEnabled(!mDataSaverEnabled);
mDataSaverFooter.setVisible(mDataSaverEnabled);
}
@Override
public void onWhitelistStatusChanged(int uid, boolean isWhitelisted) {
}
@Override
public void onBlacklistStatusChanged(int uid, boolean isBlacklisted) {
}
private void initWifiTethering() {
final Activity activity = getActivity();
mWifiConfig = mWifiManager.getWifiApConfiguration();
mSecurityType = getResources().getStringArray(R.array.wifi_ap_security);
mCreateNetwork = findPreference(WIFI_AP_SSID_AND_SECURITY);
mRestartWifiApAfterConfigChange = false;
if (mWifiConfig == null) {
final String s = activity.getString(
com.android.internal.R.string.wifi_tether_configure_ssid_default);
mCreateNetwork.setSummary(String.format(activity.getString(CONFIG_SUBTEXT),
s, mSecurityType[WifiApDialog.OPEN_INDEX]));
} else {
int index = WifiApDialog.getSecurityTypeIndex(mWifiConfig);
mCreateNetwork.setSummary(String.format(activity.getString(CONFIG_SUBTEXT),
mWifiConfig.SSID,
mSecurityType[index]));
}
}
@Override
public Dialog onCreateDialog(int id) {
if (id == DIALOG_AP_SETTINGS) {
final Activity activity = getActivity();
mDialog = new WifiApDialog(activity, this, mWifiConfig);
return mDialog;
}
return null;
}
private class TetherChangeReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context content, Intent intent) {
String action = intent.getAction();
if (action.equals(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)) {
// TODO - this should understand the interface types
ArrayList<String> available = intent.getStringArrayListExtra(
ConnectivityManager.EXTRA_AVAILABLE_TETHER);
ArrayList<String> active = intent.getStringArrayListExtra(
ConnectivityManager.EXTRA_ACTIVE_TETHER);
ArrayList<String> errored = intent.getStringArrayListExtra(
ConnectivityManager.EXTRA_ERRORED_TETHER);
updateState(available.toArray(new String[available.size()]),
active.toArray(new String[active.size()]),
errored.toArray(new String[errored.size()]));
if (mWifiManager.getWifiApState() == WifiManager.WIFI_AP_STATE_DISABLED
&& mRestartWifiApAfterConfigChange) {
mRestartWifiApAfterConfigChange = false;
Log.d(TAG, "Restarting WifiAp due to prior config change.");
startTethering(TETHERING_WIFI);
}
} else if (action.equals(WifiManager.WIFI_AP_STATE_CHANGED_ACTION)) {
int state = intent.getIntExtra(WifiManager.EXTRA_WIFI_AP_STATE, 0);
if (state == WifiManager.WIFI_AP_STATE_DISABLED
&& mRestartWifiApAfterConfigChange) {
mRestartWifiApAfterConfigChange = false;
Log.d(TAG, "Restarting WifiAp due to prior config change.");
startTethering(TETHERING_WIFI);
}
} else if (action.equals(Intent.ACTION_MEDIA_SHARED)) {
mMassStorageActive = true;
updateState();
} else if (action.equals(Intent.ACTION_MEDIA_UNSHARED)) {
mMassStorageActive = false;
updateState();
} else if (action.equals(UsbManager.ACTION_USB_STATE)) {
mUsbConnected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false);
updateState();
} else if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
if (mBluetoothEnableForTether) {
switch (intent
.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR)) {
case BluetoothAdapter.STATE_ON:
startTethering(TETHERING_BLUETOOTH);
mBluetoothEnableForTether = false;
break;
case BluetoothAdapter.STATE_OFF:
case BluetoothAdapter.ERROR:
mBluetoothEnableForTether = false;
break;
default:
// ignore transition states
}
}
updateState();
}
}
}
@Override
public void onStart() {
super.onStart();
if (mUnavailable) {
if (!isUiRestrictedByOnlyAdmin()) {
getEmptyTextView().setText(R.string.tethering_settings_not_available);
}
getPreferenceScreen().removeAll();
return;
}
final Activity activity = getActivity();
mStartTetheringCallback = new OnStartTetheringCallback(this);
mMassStorageActive = Environment.MEDIA_SHARED.equals(Environment.getExternalStorageState());
mTetherChangeReceiver = new TetherChangeReceiver();
IntentFilter filter = new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED);
filter.addAction(WifiManager.WIFI_AP_STATE_CHANGED_ACTION);
Intent intent = activity.registerReceiver(mTetherChangeReceiver, filter);
filter = new IntentFilter();
filter.addAction(UsbManager.ACTION_USB_STATE);
activity.registerReceiver(mTetherChangeReceiver, filter);
filter = new IntentFilter();
filter.addAction(Intent.ACTION_MEDIA_SHARED);
filter.addAction(Intent.ACTION_MEDIA_UNSHARED);
filter.addDataScheme("file");
activity.registerReceiver(mTetherChangeReceiver, filter);
filter = new IntentFilter();
filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
activity.registerReceiver(mTetherChangeReceiver, filter);
if (intent != null) mTetherChangeReceiver.onReceive(activity, intent);
if (mWifiApEnabler != null) {
mEnableWifiAp.setOnPreferenceChangeListener(this);
mWifiApEnabler.resume();
}
updateState();
}
@Override
public void onStop() {
super.onStop();
if (mUnavailable) {
return;
}
getActivity().unregisterReceiver(mTetherChangeReceiver);
mTetherChangeReceiver = null;
mStartTetheringCallback = null;
if (mWifiApEnabler != null) {
mEnableWifiAp.setOnPreferenceChangeListener(null);
mWifiApEnabler.pause();
}
}
private void updateState() {
String[] available = mCm.getTetherableIfaces();
String[] tethered = mCm.getTetheredIfaces();
String[] errored = mCm.getTetheringErroredIfaces();
updateState(available, tethered, errored);
}
private void updateState(String[] available, String[] tethered,
String[] errored) {
updateUsbState(available, tethered, errored);
updateBluetoothState(available, tethered, errored);
}
private void updateUsbState(String[] available, String[] tethered,
String[] errored) {
boolean usbAvailable = mUsbConnected && !mMassStorageActive;
int usbError = ConnectivityManager.TETHER_ERROR_NO_ERROR;
for (String s : available) {
for (String regex : mUsbRegexs) {
if (s.matches(regex)) {
if (usbError == ConnectivityManager.TETHER_ERROR_NO_ERROR) {
usbError = mCm.getLastTetherError(s);
}
}
}
}
boolean usbTethered = false;
for (String s : tethered) {
for (String regex : mUsbRegexs) {
if (s.matches(regex)) usbTethered = true;
}
}
boolean usbErrored = false;
for (String s: errored) {
for (String regex : mUsbRegexs) {
if (s.matches(regex)) usbErrored = true;
}
}
if (usbTethered) {
mUsbTether.setSummary(R.string.usb_tethering_active_subtext);
mUsbTether.setEnabled(!mDataSaverEnabled);
mUsbTether.setChecked(true);
} else if (usbAvailable) {
if (usbError == ConnectivityManager.TETHER_ERROR_NO_ERROR) {
mUsbTether.setSummary(R.string.usb_tethering_available_subtext);
} else {
mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
}
mUsbTether.setEnabled(!mDataSaverEnabled);
mUsbTether.setChecked(false);
} else if (usbErrored) {
mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
mUsbTether.setEnabled(false);
mUsbTether.setChecked(false);
} else if (mMassStorageActive) {
mUsbTether.setSummary(R.string.usb_tethering_storage_active_subtext);
mUsbTether.setEnabled(false);
mUsbTether.setChecked(false);
} else {
mUsbTether.setSummary(R.string.usb_tethering_unavailable_subtext);
mUsbTether.setEnabled(false);
mUsbTether.setChecked(false);
}
}
private void updateBluetoothState(String[] available, String[] tethered,
String[] errored) {
boolean bluetoothErrored = false;
for (String s: errored) {
for (String regex : mBluetoothRegexs) {
if (s.matches(regex)) bluetoothErrored = true;
}
}
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
if (adapter == null) {
return;
}
int btState = adapter.getState();
if (btState == BluetoothAdapter.STATE_TURNING_OFF) {
mBluetoothTether.setEnabled(false);
mBluetoothTether.setSummary(R.string.bluetooth_turning_off);
} else if (btState == BluetoothAdapter.STATE_TURNING_ON) {
mBluetoothTether.setEnabled(false);
mBluetoothTether.setSummary(R.string.bluetooth_turning_on);
} else {
BluetoothPan bluetoothPan = mBluetoothPan.get();
if (btState == BluetoothAdapter.STATE_ON && bluetoothPan != null
&& bluetoothPan.isTetheringOn()) {
mBluetoothTether.setChecked(true);
mBluetoothTether.setEnabled(!mDataSaverEnabled);
int bluetoothTethered = bluetoothPan.getConnectedDevices().size();
if (bluetoothTethered > 1) {
String summary = getString(
R.string.bluetooth_tethering_devices_connected_subtext,
bluetoothTethered);
mBluetoothTether.setSummary(summary);
} else if (bluetoothTethered == 1) {
mBluetoothTether.setSummary(
R.string.bluetooth_tethering_device_connected_subtext);
} else if (bluetoothErrored) {
mBluetoothTether.setSummary(R.string.bluetooth_tethering_errored_subtext);
} else {
mBluetoothTether.setSummary(R.string.bluetooth_tethering_available_subtext);
}
} else {
mBluetoothTether.setEnabled(!mDataSaverEnabled);
mBluetoothTether.setChecked(false);
mBluetoothTether.setSummary(R.string.bluetooth_tethering_off_subtext);
}
}
}
@Override
public boolean onPreferenceChange(Preference preference, Object value) {
boolean enable = (Boolean) value;
if (enable) {
startTethering(TETHERING_WIFI);
} else {
mCm.stopTethering(TETHERING_WIFI);
}
return false;
}
public static boolean isProvisioningNeededButUnavailable(Context context) {
return (TetherUtil.isProvisioningNeeded(context)
&& !isIntentAvailable(context));
}
private static boolean isIntentAvailable(Context context) {
String[] provisionApp = context.getResources().getStringArray(
com.android.internal.R.array.config_mobile_hotspot_provision_app);
if (provisionApp.length < 2) {
return false;
}
final PackageManager packageManager = context.getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClassName(provisionApp[0], provisionApp[1]);
return (packageManager.queryIntentActivities(intent,
PackageManager.MATCH_DEFAULT_ONLY).size() > 0);
}
private void startTethering(int choice) {
if (choice == TETHERING_BLUETOOTH) {
// Turn on Bluetooth first.
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
if (adapter.getState() == BluetoothAdapter.STATE_OFF) {
mBluetoothEnableForTether = true;
adapter.enable();
mBluetoothTether.setSummary(R.string.bluetooth_turning_on);
mBluetoothTether.setEnabled(false);
return;
}
}
mCm.startTethering(choice, true, mStartTetheringCallback, mHandler);
}
@Override
public boolean onPreferenceTreeClick(Preference preference) {
if (preference == mUsbTether) {
if (mUsbTether.isChecked()) {
startTethering(TETHERING_USB);
} else {
mCm.stopTethering(TETHERING_USB);
}
} else if (preference == mBluetoothTether) {
if (mBluetoothTether.isChecked()) {
startTethering(TETHERING_BLUETOOTH);
} else {
mCm.stopTethering(TETHERING_BLUETOOTH);
// No ACTION_TETHER_STATE_CHANGED is fired or bluetooth unless a device is
// connected. Need to update state manually.
updateState();
}
} else if (preference == mCreateNetwork) {
showDialog(DIALOG_AP_SETTINGS);
}
return super.onPreferenceTreeClick(preference);
}
public void onClick(DialogInterface dialogInterface, int button) {
if (button == DialogInterface.BUTTON_POSITIVE) {
mWifiConfig = mDialog.getConfig();
if (mWifiConfig != null) {
/**
* if soft AP is stopped, bring up
* else restart with new config
* TODO: update config on a running access point when framework support is added
*/
if (mWifiManager.getWifiApState() == WifiManager.WIFI_AP_STATE_ENABLED) {
Log.d("TetheringSettings",
"Wifi AP config changed while enabled, stop and restart");
mRestartWifiApAfterConfigChange = true;
mCm.stopTethering(TETHERING_WIFI);
}
mWifiManager.setWifiApConfiguration(mWifiConfig);
int index = WifiApDialog.getSecurityTypeIndex(mWifiConfig);
mCreateNetwork.setSummary(String.format(getActivity().getString(CONFIG_SUBTEXT),
mWifiConfig.SSID,
mSecurityType[index]));
}
}
}
@Override
public int getHelpResource() {
return R.string.help_url_tether;
}
private 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);
}
};
private static final class OnStartTetheringCallback extends
ConnectivityManager.OnStartTetheringCallback {
final WeakReference<TetherSettings> mTetherSettings;
OnStartTetheringCallback(TetherSettings settings) {
mTetherSettings = new WeakReference<TetherSettings>(settings);
}
@Override
public void onTetheringStarted() {
update();
}
@Override
public void onTetheringFailed() {
update();
}
private void update() {
TetherSettings settings = mTetherSettings.get();
if (settings != null) {
settings.updateState();
}
}
}
}