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/*
* Copyright (C) 2015 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 com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
import android.app.Activity;
import android.app.ProgressDialog;
import android.app.settings.SettingsEnums;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothManager;
import android.content.ContentResolver;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkPolicyManager;
import android.net.Uri;
import android.net.VpnManager;
import android.net.wifi.WifiManager;
import android.net.wifi.p2p.WifiP2pManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Looper;
import android.os.RecoverySystem;
import android.os.UserHandle;
import android.os.UserManager;
import android.telephony.SubscriptionManager;
import android.telephony.SubscriptionManager.OnSubscriptionsChangedListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.VisibleForTesting;
import androidx.appcompat.app.AlertDialog;
import com.android.settings.core.InstrumentedFragment;
import com.android.settings.enterprise.ActionDisabledByAdminDialogHelper;
import com.android.settings.network.apn.ApnSettings;
import com.android.settingslib.RestrictedLockUtilsInternal;
/**
* Confirm and execute a reset of the network settings to a clean "just out of the box"
* state. Multiple confirmations are required: first, a general "are you sure
* you want to do this?" prompt, followed by a keyguard pattern trace if the user
* has defined one, followed by a final strongly-worded "THIS WILL RESET EVERYTHING"
* prompt. If at any time the phone is allowed to go to sleep, is
* locked, et cetera, then the confirmation sequence is abandoned.
*
* This is the confirmation screen.
*/
public class ResetNetworkConfirm extends InstrumentedFragment {
private static final String TAG = "ResetNetworkConfirm";
@VisibleForTesting View mContentView;
@VisibleForTesting boolean mEraseEsim;
@VisibleForTesting ResetNetworkTask mResetNetworkTask;
@VisibleForTesting Activity mActivity;
private int mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;
private ProgressDialog mProgressDialog;
private AlertDialog mAlertDialog;
private OnSubscriptionsChangedListener mSubscriptionsChangedListener;
/**
* Async task used to do all reset task. If error happens during
* erasing eSIM profiles or timeout, an error msg is shown.
*/
private class ResetNetworkTask extends AsyncTask<Void, Void, Boolean> {
private static final String TAG = "ResetNetworkTask";
private final Context mContext;
private final String mPackageName;
ResetNetworkTask(Context context) {
mContext = context;
mPackageName = context.getPackageName();
}
@Override
protected Boolean doInBackground(Void... params) {
boolean isResetSucceed = true;
ConnectivityManager connectivityManager = (ConnectivityManager)
mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivityManager != null) {
connectivityManager.factoryReset();
}
VpnManager vpnManager = mContext.getSystemService(VpnManager.class);
if (vpnManager != null) {
vpnManager.factoryReset();
}
WifiManager wifiManager = (WifiManager)
mContext.getSystemService(Context.WIFI_SERVICE);
if (wifiManager != null) {
wifiManager.factoryReset();
}
p2pFactoryReset(mContext);
if (mEraseEsim) {
isResetSucceed = RecoverySystem.wipeEuiccData(mContext, mPackageName);
}
TelephonyManager telephonyManager = (TelephonyManager)
mContext.getSystemService(TelephonyManager.class)
.createForSubscriptionId(mSubId);
if (telephonyManager != null) {
telephonyManager.resetSettings();
}
NetworkPolicyManager policyManager = (NetworkPolicyManager)
mContext.getSystemService(Context.NETWORK_POLICY_SERVICE);
if (policyManager != null) {
String subscriberId = telephonyManager.getSubscriberId();
policyManager.factoryReset(subscriberId);
}
BluetoothManager btManager = (BluetoothManager)
mContext.getSystemService(Context.BLUETOOTH_SERVICE);
if (btManager != null) {
BluetoothAdapter btAdapter = btManager.getAdapter();
if (btAdapter != null) {
btAdapter.clearBluetooth();
}
}
restoreDefaultApn(mContext);
Log.d(TAG, "network factoryReset complete. succeeded: "
+ String.valueOf(isResetSucceed));
return isResetSucceed;
}
@Override
protected void onPostExecute(Boolean succeeded) {
if (mProgressDialog != null && mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
}
if (succeeded) {
Toast.makeText(mContext, R.string.reset_network_complete_toast, Toast.LENGTH_SHORT)
.show();
} else {
mAlertDialog = new AlertDialog.Builder(mContext)
.setTitle(R.string.reset_esim_error_title)
.setMessage(R.string.reset_esim_error_msg)
.setPositiveButton(android.R.string.ok, null /* listener */)
.show();
}
}
}
/**
* The user has gone through the multiple confirmation, so now we go ahead
* and reset the network settings to its factory-default state.
*/
@VisibleForTesting
Button.OnClickListener mFinalClickListener = new Button.OnClickListener() {
@Override
public void onClick(View v) {
if (Utils.isMonkeyRunning()) {
return;
}
// abandon execution if subscription no longer active
if (mSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
SubscriptionManager mgr = getSubscriptionManager();
// always remove listener
stopMonitorSubscriptionChange(mgr);
if (!isSubscriptionRemainActive(mgr, mSubId)) {
Log.w(TAG, "subId " + mSubId + " disappear when confirm");
mActivity.finish();
return;
}
}
// Should dismiss the progress dialog firstly if it is showing
// Or not the progress dialog maybe not dismissed in fast clicking.
if (mProgressDialog != null && mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
}
mProgressDialog = getProgressDialog(mActivity);
mProgressDialog.show();
mResetNetworkTask = new ResetNetworkTask(mActivity);
mResetNetworkTask.execute();
}
};
@VisibleForTesting
void p2pFactoryReset(Context context) {
WifiP2pManager wifiP2pManager = (WifiP2pManager)
context.getSystemService(Context.WIFI_P2P_SERVICE);
if (wifiP2pManager != null) {
WifiP2pManager.Channel channel = wifiP2pManager.initialize(
context.getApplicationContext(), context.getMainLooper(),
null /* listener */);
if (channel != null) {
wifiP2pManager.factoryReset(channel, null /* listener */);
}
}
}
private ProgressDialog getProgressDialog(Context context) {
final ProgressDialog progressDialog = new ProgressDialog(context);
progressDialog.setIndeterminate(true);
progressDialog.setCancelable(false);
progressDialog.setMessage(
context.getString(R.string.main_clear_progress_text));
return progressDialog;
}
/**
* Restore APN settings to default.
*/
private void restoreDefaultApn(Context context) {
Uri uri = Uri.parse(ApnSettings.RESTORE_CARRIERS_URI);
if (SubscriptionManager.isUsableSubscriptionId(mSubId)) {
uri = Uri.withAppendedPath(uri, "subId/" + String.valueOf(mSubId));
}
ContentResolver resolver = context.getContentResolver();
resolver.delete(uri, null, null);
}
/**
* Configure the UI for the final confirmation interaction
*/
private void establishFinalConfirmationState() {
mContentView.findViewById(R.id.execute_reset_network)
.setOnClickListener(mFinalClickListener);
}
@VisibleForTesting
void setSubtitle() {
if (mEraseEsim) {
((TextView) mContentView.findViewById(R.id.reset_network_confirm))
.setText(R.string.reset_network_final_desc_esim);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final EnforcedAdmin admin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced(
mActivity, UserManager.DISALLOW_NETWORK_RESET, UserHandle.myUserId());
if (RestrictedLockUtilsInternal.hasBaseUserRestriction(mActivity,
UserManager.DISALLOW_NETWORK_RESET, UserHandle.myUserId())) {
return inflater.inflate(R.layout.network_reset_disallowed_screen, null);
} else if (admin != null) {
new ActionDisabledByAdminDialogHelper(mActivity)
.prepareDialogBuilder(UserManager.DISALLOW_NETWORK_RESET, admin)
.setOnDismissListener(__ -> mActivity.finish())
.show();
return new View(mActivity);
}
mContentView = inflater.inflate(R.layout.reset_network_confirm, null);
establishFinalConfirmationState();
setSubtitle();
return mContentView;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle args = getArguments();
if (args != null) {
mSubId = args.getInt(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX,
SubscriptionManager.INVALID_SUBSCRIPTION_ID);
mEraseEsim = args.getBoolean(MainClear.ERASE_ESIMS_EXTRA);
}
mActivity = getActivity();
if (mSubId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
return;
}
// close confirmation dialog when reset specific subscription
// but removed priori to the confirmation button been pressed
startMonitorSubscriptionChange(getSubscriptionManager());
}
private SubscriptionManager getSubscriptionManager() {
SubscriptionManager mgr = mActivity.getSystemService(SubscriptionManager.class);
if (mgr == null) {
Log.w(TAG, "No SubscriptionManager");
}
return mgr;
}
private void startMonitorSubscriptionChange(SubscriptionManager mgr) {
if (mgr == null) {
return;
}
// update monitor listener
mSubscriptionsChangedListener = new OnSubscriptionsChangedListener(
Looper.getMainLooper()) {
@Override
public void onSubscriptionsChanged() {
SubscriptionManager mgr = getSubscriptionManager();
if (isSubscriptionRemainActive(mgr, mSubId)) {
return;
}
// close UI if subscription no longer active
Log.w(TAG, "subId " + mSubId + " no longer active.");
stopMonitorSubscriptionChange(mgr);
mActivity.finish();
}
};
mgr.addOnSubscriptionsChangedListener(
mActivity.getMainExecutor(), mSubscriptionsChangedListener);
}
private boolean isSubscriptionRemainActive(SubscriptionManager mgr, int subscriptionId) {
return (mgr == null) ? false : (mgr.getActiveSubscriptionInfo(subscriptionId) != null);
}
private void stopMonitorSubscriptionChange(SubscriptionManager mgr) {
if ((mgr == null) || (mSubscriptionsChangedListener == null)) {
return;
}
mgr.removeOnSubscriptionsChangedListener(mSubscriptionsChangedListener);
mSubscriptionsChangedListener = null;
}
@Override
public void onDestroy() {
if (mResetNetworkTask != null) {
mResetNetworkTask.cancel(true /* mayInterruptIfRunning */);
mResetNetworkTask = null;
}
if (mProgressDialog != null) {
mProgressDialog.dismiss();
}
if (mAlertDialog != null) {
mAlertDialog.dismiss();
}
stopMonitorSubscriptionChange(getSubscriptionManager());
super.onDestroy();
}
@Override
public int getMetricsCategory() {
return SettingsEnums.RESET_NETWORK_CONFIRM;
}
}