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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.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.wifi.WifiManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.RecoverySystem;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Telephony;
import android.telephony.SubscriptionManager;
import android.telephony.TelephonyManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
import androidx.annotation.VisibleForTesting;
import androidx.appcompat.app.AlertDialog;
import com.android.ims.ImsManager;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import com.android.internal.telephony.PhoneConstants;
import com.android.settings.core.InstrumentedFragment;
import com.android.settings.enterprise.ActionDisabledByAdminDialogHelper;
import com.android.settings.network.ApnSettings;
import com.android.settingslib.RestrictedLockUtils;
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 View mContentView;
private int mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;
@VisibleForTesting boolean mEraseEsim;
@VisibleForTesting EraseEsimAsyncTask mEraseEsimTask;
/**
* Async task used to erase all the eSIM profiles from the phone. If error happens during
* erasing eSIM profiles or timeout, an error msg is shown.
*/
private static class EraseEsimAsyncTask extends AsyncTask<Void, Void, Boolean> {
private final Context mContext;
private final String mPackageName;
EraseEsimAsyncTask(Context context, String packageName) {
mContext = context;
mPackageName = packageName;
}
@Override
protected Boolean doInBackground(Void... params) {
return RecoverySystem.wipeEuiccData(mContext, mPackageName);
}
@Override
protected void onPostExecute(Boolean succeeded) {
if (succeeded) {
Toast.makeText(mContext, R.string.reset_network_complete_toast, Toast.LENGTH_SHORT)
.show();
} else {
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.
*/
private Button.OnClickListener mFinalClickListener = new Button.OnClickListener() {
@Override
public void onClick(View v) {
if (Utils.isMonkeyRunning()) {
return;
}
// TODO maybe show a progress screen if this ends up taking a while and won't let user
// go back until the tasks finished.
Context context = getActivity();
ConnectivityManager connectivityManager = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivityManager != null) {
connectivityManager.factoryReset();
}
WifiManager wifiManager = (WifiManager)
context.getSystemService(Context.WIFI_SERVICE);
if (wifiManager != null) {
wifiManager.factoryReset();
}
TelephonyManager telephonyManager = (TelephonyManager)
context.getSystemService(Context.TELEPHONY_SERVICE);
if (telephonyManager != null) {
telephonyManager.factoryReset(mSubId);
}
NetworkPolicyManager policyManager = (NetworkPolicyManager)
context.getSystemService(Context.NETWORK_POLICY_SERVICE);
if (policyManager != null) {
String subscriberId = telephonyManager.getSubscriberId(mSubId);
policyManager.factoryReset(subscriberId);
}
BluetoothManager btManager = (BluetoothManager)
context.getSystemService(Context.BLUETOOTH_SERVICE);
if (btManager != null) {
BluetoothAdapter btAdapter = btManager.getAdapter();
if (btAdapter != null) {
btAdapter.factoryReset();
}
}
ImsManager.getInstance(context,
SubscriptionManager.getPhoneId(mSubId)).factoryReset();
restoreDefaultApn(context);
esimFactoryReset(context, context.getPackageName());
// There has been issues when Sms raw table somehow stores orphan
// fragments. They lead to garbled message when new fragments come
// in and combied with those stale ones. In case this happens again,
// user can reset all network settings which will clean up this table.
cleanUpSmsRawTable(context);
}
};
private void cleanUpSmsRawTable(Context context) {
ContentResolver resolver = context.getContentResolver();
Uri uri = Uri.withAppendedPath(Telephony.Sms.CONTENT_URI, "raw/permanentDelete");
resolver.delete(uri, null, null);
}
@VisibleForTesting
void esimFactoryReset(Context context, String packageName) {
if (mEraseEsim) {
mEraseEsimTask = new EraseEsimAsyncTask(context, packageName);
mEraseEsimTask.execute();
} else {
Toast.makeText(context, R.string.reset_network_complete_toast, Toast.LENGTH_SHORT)
.show();
}
}
/**
* Restore APN settings to default.
*/
private void restoreDefaultApn(Context context) {
Uri uri = Uri.parse(ApnSettings.RESTORE_CARRIERS_URI);
if (SubscriptionManager.isUsableSubIdValue(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);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final EnforcedAdmin admin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced(
getActivity(), UserManager.DISALLOW_NETWORK_RESET, UserHandle.myUserId());
if (RestrictedLockUtilsInternal.hasBaseUserRestriction(getActivity(),
UserManager.DISALLOW_NETWORK_RESET, UserHandle.myUserId())) {
return inflater.inflate(R.layout.network_reset_disallowed_screen, null);
} else if (admin != null) {
new ActionDisabledByAdminDialogHelper(getActivity())
.prepareDialogBuilder(UserManager.DISALLOW_NETWORK_RESET, admin)
.setOnDismissListener(__ -> getActivity().finish())
.show();
return new View(getContext());
}
mContentView = inflater.inflate(R.layout.reset_network_confirm, null);
establishFinalConfirmationState();
return mContentView;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle args = getArguments();
if (args != null) {
mSubId = args.getInt(PhoneConstants.SUBSCRIPTION_KEY,
SubscriptionManager.INVALID_SUBSCRIPTION_ID);
mEraseEsim = args.getBoolean(MasterClear.ERASE_ESIMS_EXTRA);
}
}
@Override
public void onDestroy() {
if (mEraseEsimTask != null) {
mEraseEsimTask.cancel(true /* mayInterruptIfRunning */);
mEraseEsimTask = null;
}
super.onDestroy();
}
@Override
public int getMetricsCategory() {
return MetricsEvent.RESET_NETWORK_CONFIRM;
}
}
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