1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.security; 18 19 import android.content.Context; 20 import android.os.PersistableBundle; 21 import android.os.UserManager; 22 import android.telephony.CarrierConfigManager; 23 import android.telephony.SubscriptionInfo; 24 import android.telephony.SubscriptionManager; 25 import android.telephony.TelephonyManager; 26 27 import androidx.preference.Preference; 28 import androidx.preference.PreferenceScreen; 29 30 import com.android.settings.core.BasePreferenceController; 31 32 import java.util.List; 33 34 public class SimLockPreferenceController extends BasePreferenceController { 35 36 private static final String KEY_SIM_LOCK = "sim_lock_settings"; 37 38 private final CarrierConfigManager mCarrierConfigManager; 39 private final UserManager mUserManager; 40 private final SubscriptionManager mSubscriptionManager; 41 private TelephonyManager mTelephonyManager; 42 SimLockPreferenceController(Context context)43 public SimLockPreferenceController(Context context) { 44 super(context, KEY_SIM_LOCK); 45 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 46 mCarrierConfigManager = (CarrierConfigManager) 47 mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE); 48 mSubscriptionManager = (SubscriptionManager) context 49 .getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE); 50 mTelephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); 51 } 52 53 @Override getAvailabilityStatus()54 public int getAvailabilityStatus() { 55 final List<SubscriptionInfo> subInfoList = 56 mSubscriptionManager.getActiveSubscriptionInfoList(); 57 58 if (subInfoList == null) { 59 return DISABLED_FOR_USER; 60 } 61 62 final boolean isAdmin = mUserManager.isAdminUser(); 63 if (isAdmin && (!isHideSimLockSetting(subInfoList))) { 64 return AVAILABLE; 65 } 66 67 return DISABLED_FOR_USER; 68 } 69 70 @Override displayPreference(PreferenceScreen screen)71 public void displayPreference(PreferenceScreen screen) { 72 super.displayPreference(screen); 73 final Preference preference = screen.findPreference(getPreferenceKey()); 74 if (preference == null) { 75 return; 76 } 77 // Disable SIM lock if there is no ready SIM card. 78 preference.setEnabled(isSimReady()); 79 } 80 81 /* Return true if a SIM is ready for locking. 82 * TODO: consider adding to TelephonyManager or SubscritpionManasger. 83 */ isSimReady()84 private boolean isSimReady() { 85 final List<SubscriptionInfo> subInfoList = 86 mSubscriptionManager.getActiveSubscriptionInfoList(); 87 if (subInfoList == null) { 88 return false; 89 } 90 91 for (SubscriptionInfo subInfo : subInfoList) { 92 final int simState = mTelephonyManager.getSimState(subInfo.getSimSlotIndex()); 93 if ((simState != TelephonyManager.SIM_STATE_ABSENT) 94 && (simState != TelephonyManager.SIM_STATE_UNKNOWN)) { 95 return true; 96 } 97 } 98 return false; 99 } 100 isHideSimLockSetting(List<SubscriptionInfo> subInfoList)101 private boolean isHideSimLockSetting(List<SubscriptionInfo> subInfoList) { 102 if (subInfoList == null) { 103 return true; 104 } 105 106 for (SubscriptionInfo subInfo : subInfoList) { 107 final TelephonyManager telephonyManager = mTelephonyManager 108 .createForSubscriptionId(subInfo.getSubscriptionId()); 109 final PersistableBundle bundle = mCarrierConfigManager.getConfigForSubId( 110 subInfo.getSubscriptionId()); 111 if (telephonyManager.hasIccCard() && bundle != null 112 && !bundle.getBoolean(CarrierConfigManager.KEY_HIDE_SIM_LOCK_SETTINGS_BOOL)) { 113 // one or more sims show sim lock setting UI. 114 return false; 115 } 116 } 117 118 return true; 119 } 120 } 121