101 lines
3.7 KiB
Java
101 lines
3.7 KiB
Java
/*
|
|
* Copyright (C) 2023 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.internal.telephony;
|
|
|
|
import android.content.BroadcastReceiver;
|
|
import android.content.Context;
|
|
import android.content.Intent;
|
|
import android.content.IntentFilter;
|
|
import android.os.UserManager;
|
|
import android.telephony.Rlog;
|
|
|
|
/**
|
|
* A BroadcastReceiver for device administration events.
|
|
*/
|
|
public class TelephonyAdminReceiver extends BroadcastReceiver {
|
|
private static final String TAG = "TelephonyAdminReceiver";
|
|
private final Phone mPhone;
|
|
// We keep track of the last value to avoid updating when unrelated user restrictions change
|
|
private boolean mDisallowCellular2gRestriction = false;
|
|
private final Context mContext;
|
|
private UserManager mUserManager;
|
|
|
|
public TelephonyAdminReceiver(Context context, Phone phone) {
|
|
mContext = context;
|
|
mPhone = phone;
|
|
mUserManager = null;
|
|
if (ensureUserManagerExists()) {
|
|
mDisallowCellular2gRestriction = mUserManager.hasUserRestriction(
|
|
UserManager.DISALLOW_CELLULAR_2G);
|
|
}
|
|
IntentFilter filter = new IntentFilter();
|
|
filter.addAction(UserManager.ACTION_USER_RESTRICTIONS_CHANGED);
|
|
context.registerReceiver(this, filter);
|
|
}
|
|
|
|
@Override
|
|
public void onReceive(Context context, Intent intent) {
|
|
Rlog.d(TAG, "Processing onReceive");
|
|
if (context == null || intent == null) return;
|
|
if (!intent.getAction().equals(UserManager.ACTION_USER_RESTRICTIONS_CHANGED)) {
|
|
Rlog.d(TAG, "Ignoring unexpected action: " + intent.getAction());
|
|
return;
|
|
}
|
|
if (!ensureUserManagerExists()) {
|
|
return;
|
|
}
|
|
boolean shouldDisallow2g = mUserManager.hasUserRestriction(
|
|
UserManager.DISALLOW_CELLULAR_2G);
|
|
|
|
if (shouldDisallow2g != mDisallowCellular2gRestriction) {
|
|
Rlog.i(TAG,
|
|
"Updating allowed network types with new admin 2g restriction. no_cellular_2g: "
|
|
+ shouldDisallow2g);
|
|
mDisallowCellular2gRestriction = shouldDisallow2g;
|
|
mPhone.sendSubscriptionSettings(false);
|
|
} else {
|
|
Rlog.i(TAG, "Skipping update of allowed network types. Restriction no_cellular_2g "
|
|
+ "unchanged: " + mDisallowCellular2gRestriction);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the current state of the {@link UserManager#DISALLOW_CELLULAR_2G} user restriction.
|
|
*/
|
|
public boolean isCellular2gDisabled() {
|
|
return mDisallowCellular2gRestriction;
|
|
}
|
|
|
|
/**
|
|
* Tries to resolve the user manager system service. Returns true if successful, false
|
|
* otherwise.
|
|
*/
|
|
private boolean ensureUserManagerExists() {
|
|
if (mUserManager == null) {
|
|
Rlog.d(TAG, "No user manager. Attempting to resolve one.");
|
|
mUserManager = mContext.getSystemService(UserManager.class);
|
|
}
|
|
if (mUserManager == null) {
|
|
Rlog.e(TAG,
|
|
"Could not get a user manager instance. All operations will be no-ops until "
|
|
+ "one is resolved");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
}
|