/*
* 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 com.android.settings.wifi.WifiApEnabler;
import com.android.settings.wifi.WifiApDialog;
import android.app.Activity;
import android.app.AlertDialog;
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.res.AssetManager;
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.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.text.TextUtils;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.webkit.WebView;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Locale;
/*
* Displays preferences for Tethering.
*/
public class TetherSettings extends SettingsPreferenceFragment
implements DialogInterface.OnClickListener, Preference.OnPreferenceChangeListener {
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 TETHERING_HELP = "tethering_help";
private static final String USB_HELP_MODIFIER = "usb_";
private static final String WIFI_HELP_MODIFIER = "wifi_";
private static final String HELP_URL = "file:///android_asset/html/%y%z/tethering_%xhelp.html";
private static final String HELP_PATH = "html/%y%z/tethering_help.html";
private static final int DIALOG_TETHER_HELP = 1;
private static final int DIALOG_AP_SETTINGS = 2;
private WebView mView;
private CheckBoxPreference mUsbTether;
private WifiApEnabler mWifiApEnabler;
private CheckBoxPreference mEnableWifiAp;
private CheckBoxPreference mBluetoothTether;
private PreferenceScreen mTetherHelp;
private BroadcastReceiver mTetherChangeReceiver;
private String[] mUsbRegexs;
private String[] mWifiRegexs;
private String[] mBluetoothRegexs;
private BluetoothPan mBluetoothPan;
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 boolean mUsbConnected;
private boolean mMassStorageActive;
private boolean mBluetoothEnableForTether;
private static final int INVALID = -1;
private static final int WIFI_TETHERING = 0;
private static final int USB_TETHERING = 1;
private static final int BLUETOOTH_TETHERING = 2;
/* One of INVALID, WIFI_TETHERING, USB_TETHERING or BLUETOOTH_TETHERING */
private int mTetherChoice = INVALID;
/* Stores the package name and the class name of the provisioning app */
private String[] mProvisionApp;
private static final int PROVISION_REQUEST = 0;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
addPreferencesFromResource(R.xml.tether_prefs);
final Activity activity = getActivity();
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
if (adapter != null) {
adapter.getProfileProxy(activity.getApplicationContext(), mProfileServiceListener,
BluetoothProfile.PAN);
}
mEnableWifiAp =
(CheckBoxPreference) findPreference(ENABLE_WIFI_AP);
Preference wifiApSettings = findPreference(WIFI_AP_SSID_AND_SECURITY);
mUsbTether = (CheckBoxPreference) findPreference(USB_TETHER_SETTINGS);
mBluetoothTether = (CheckBoxPreference) findPreference(ENABLE_BLUETOOTH_TETHERING);
mTetherHelp = (PreferenceScreen) findPreference(TETHERING_HELP);
ConnectivityManager cm =
(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
mUsbRegexs = cm.getTetherableUsbRegexs();
mWifiRegexs = cm.getTetherableWifiRegexs();
mBluetoothRegexs = cm.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, mEnableWifiAp);
initWifiTethering();
} else {
getPreferenceScreen().removePreference(mEnableWifiAp);
getPreferenceScreen().removePreference(wifiApSettings);
}
if (!bluetoothAvailable) {
getPreferenceScreen().removePreference(mBluetoothTether);
} else {
if (mBluetoothPan != null && mBluetoothPan.isTetheringOn()) {
mBluetoothTether.setChecked(true);
} else {
mBluetoothTether.setChecked(false);
}
}
mProvisionApp = getResources().getStringArray(
com.android.internal.R.array.config_mobile_hotspot_provision_app);
mView = new WebView(activity);
}
private void initWifiTethering() {
final Activity activity = getActivity();
mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
mWifiConfig = mWifiManager.getWifiApConfiguration();
mSecurityType = getResources().getStringArray(R.array.wifi_ap_security);
mCreateNetwork = findPreference(WIFI_AP_SSID_AND_SECURITY);
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]));
}
}
private BluetoothProfile.ServiceListener mProfileServiceListener =
new BluetoothProfile.ServiceListener() {
public void onServiceConnected(int profile, BluetoothProfile proxy) {
mBluetoothPan = (BluetoothPan) proxy;
}
public void onServiceDisconnected(int profile) {
mBluetoothPan = null;
}
};
@Override
public Dialog onCreateDialog(int id) {
if (id == DIALOG_TETHER_HELP) {
Locale locale = Locale.getDefault();
// check for the full language + country resource, if not there, try just language
final AssetManager am = getActivity().getAssets();
String path = HELP_PATH.replace("%y", locale.getLanguage().toLowerCase());
path = path.replace("%z", '_'+locale.getCountry().toLowerCase());
boolean useCountry = true;
InputStream is = null;
try {
is = am.open(path);
} catch (Exception ignored) {
useCountry = false;
} finally {
if (is != null) {
try {
is.close();
} catch (Exception ignored) {}
}
}
String url = HELP_URL.replace("%y", locale.getLanguage().toLowerCase());
url = url.replace("%z", useCountry ? '_'+locale.getCountry().toLowerCase() : "");
if ((mUsbRegexs.length != 0) && (mWifiRegexs.length == 0)) {
url = url.replace("%x", USB_HELP_MODIFIER);
} else if ((mWifiRegexs.length != 0) && (mUsbRegexs.length == 0)) {
url = url.replace("%x", WIFI_HELP_MODIFIER);
} else {
// could assert that both wifi and usb have regexs, but the default
// is to use this anyway so no check is needed
url = url.replace("%x", "");
}
mView.loadUrl(url);
// Detach from old parent first
ViewParent parent = mView.getParent();
if (parent != null && parent instanceof ViewGroup) {
((ViewGroup) parent).removeView(mView);
}
return new AlertDialog.Builder(getActivity())
.setCancelable(true)
.setTitle(R.string.tethering_help_button_text)
.setView(mView)
.create();
} else 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()]));
} 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:
mBluetoothPan.setBluetoothTethering(true);
mBluetoothEnableForTether = false;
break;
case BluetoothAdapter.STATE_OFF:
case BluetoothAdapter.ERROR:
mBluetoothEnableForTether = false;
break;
default:
// ignore transition states
}
}
updateState();
}
}
}
@Override
public void onStart() {
super.onStart();
final Activity activity = getActivity();
mMassStorageActive = Environment.MEDIA_SHARED.equals(Environment.getExternalStorageState());
mTetherChangeReceiver = new TetherChangeReceiver();
IntentFilter filter = new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED);
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();
getActivity().unregisterReceiver(mTetherChangeReceiver);
mTetherChangeReceiver = null;
if (mWifiApEnabler != null) {
mEnableWifiAp.setOnPreferenceChangeListener(null);
mWifiApEnabler.pause();
}
}
private void updateState() {
ConnectivityManager cm =
(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
String[] available = cm.getTetherableIfaces();
String[] tethered = cm.getTetheredIfaces();
String[] errored = cm.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) {
ConnectivityManager cm =
(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
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 = cm.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(true);
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(true);
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) {
int bluetoothTethered = 0;
for (String s : tethered) {
for (String regex : mBluetoothRegexs) {
if (s.matches(regex)) bluetoothTethered++;
}
}
boolean bluetoothErrored = false;
for (String s: errored) {
for (String regex : mBluetoothRegexs) {
if (s.matches(regex)) bluetoothErrored = true;
}
}
BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
int btState = adapter.getState();
if (btState == BluetoothAdapter.STATE_TURNING_OFF) {
mBluetoothTether.setEnabled(false);
mBluetoothTether.setSummary(R.string.wifi_stopping);
} else if (btState == BluetoothAdapter.STATE_TURNING_ON) {
mBluetoothTether.setEnabled(false);
mBluetoothTether.setSummary(R.string.bluetooth_turning_on);
} else if (btState == BluetoothAdapter.STATE_ON && mBluetoothPan.isTetheringOn()) {
mBluetoothTether.setChecked(true);
mBluetoothTether.setEnabled(true);
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(true);
mBluetoothTether.setChecked(false);
mBluetoothTether.setSummary(R.string.bluetooth_tethering_off_subtext);
}
}
public boolean onPreferenceChange(Preference preference, Object value) {
boolean enable = (Boolean) value;
if (enable) {
startProvisioningIfNecessary(WIFI_TETHERING);
} else {
mWifiApEnabler.setSoftapEnabled(false);
}
return false;
}
boolean isProvisioningNeeded() {
return mProvisionApp.length == 2;
}
private void startProvisioningIfNecessary(int choice) {
mTetherChoice = choice;
if (isProvisioningNeeded()) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClassName(mProvisionApp[0], mProvisionApp[1]);
startActivityForResult(intent, PROVISION_REQUEST);
} else {
startTethering();
}
}
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
if (requestCode == PROVISION_REQUEST) {
if (resultCode == Activity.RESULT_OK) {
startTethering();
} else {
//BT and USB need checkbox turned off on failure
//Wifi tethering is never turned on until afterwards
switch (mTetherChoice) {
case BLUETOOTH_TETHERING:
mBluetoothTether.setChecked(false);
break;
case USB_TETHERING:
mUsbTether.setChecked(false);
break;
}
mTetherChoice = INVALID;
}
}
}
private void startTethering() {
switch (mTetherChoice) {
case WIFI_TETHERING:
mWifiApEnabler.setSoftapEnabled(true);
break;
case BLUETOOTH_TETHERING:
// 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);
} else {
mBluetoothPan.setBluetoothTethering(true);
mBluetoothTether.setSummary(R.string.bluetooth_tethering_available_subtext);
}
break;
case USB_TETHERING:
setUsbTethering(true);
break;
default:
//should not happen
break;
}
}
private void setUsbTethering(boolean enabled) {
ConnectivityManager cm =
(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
if (cm.setUsbTethering(enabled) != ConnectivityManager.TETHER_ERROR_NO_ERROR) {
mUsbTether.setChecked(false);
mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
return;
}
mUsbTether.setSummary("");
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
ConnectivityManager cm =
(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
if (preference == mUsbTether) {
boolean newState = mUsbTether.isChecked();
if (newState) {
startProvisioningIfNecessary(USB_TETHERING);
} else {
setUsbTethering(newState);
}
} else if (preference == mBluetoothTether) {
boolean bluetoothTetherState = mBluetoothTether.isChecked();
if (bluetoothTetherState) {
startProvisioningIfNecessary(BLUETOOTH_TETHERING);
} else {
boolean errored = false;
String [] tethered = cm.getTetheredIfaces();
String bluetoothIface = findIface(tethered, mBluetoothRegexs);
if (bluetoothIface != null &&
cm.untether(bluetoothIface) != ConnectivityManager.TETHER_ERROR_NO_ERROR) {
errored = true;
}
mBluetoothPan.setBluetoothTethering(false);
if (errored) {
mBluetoothTether.setSummary(R.string.bluetooth_tethering_errored_subtext);
} else {
mBluetoothTether.setSummary(R.string.bluetooth_tethering_off_subtext);
}
}
} else if (preference == mTetherHelp) {
showDialog(DIALOG_TETHER_HELP);
return true;
} else if (preference == mCreateNetwork) {
showDialog(DIALOG_AP_SETTINGS);
}
return super.onPreferenceTreeClick(screen, preference);
}
private static String findIface(String[] ifaces, String[] regexes) {
for (String iface : ifaces) {
for (String regex : regexes) {
if (iface.matches(regex)) {
return iface;
}
}
}
return null;
}
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) {
mWifiManager.setWifiApEnabled(null, false);
mWifiManager.setWifiApEnabled(mWifiConfig, true);
} else {
mWifiManager.setWifiApConfiguration(mWifiConfig);
}
int index = WifiApDialog.getSecurityTypeIndex(mWifiConfig);
mCreateNetwork.setSummary(String.format(getActivity().getString(CONFIG_SUBTEXT),
mWifiConfig.SSID,
mSecurityType[index]));
}
}
}
}