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 import com.android.settings.network.SubscriptionUtil; 32 33 import java.util.List; 34 35 public class SimLockPreferenceController extends BasePreferenceController { 36 37 private final CarrierConfigManager mCarrierConfigManager; 38 private final UserManager mUserManager; 39 private final SubscriptionManager mSubscriptionManager; 40 private TelephonyManager mTelephonyManager; 41 SimLockPreferenceController(Context context, String key)42 public SimLockPreferenceController(Context context, String key) { 43 super(context, key); 44 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 45 mCarrierConfigManager = (CarrierConfigManager) 46 mContext.getSystemService(Context.CARRIER_CONFIG_SERVICE); 47 mSubscriptionManager = (SubscriptionManager) context 48 .getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE); 49 mTelephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); 50 } 51 52 @Override getAvailabilityStatus()53 public int getAvailabilityStatus() { 54 if (!SubscriptionUtil.isSimHardwareVisible(mContext)) { 55 return UNSUPPORTED_ON_DEVICE; 56 } 57 58 final List<SubscriptionInfo> subInfoList = 59 mSubscriptionManager.getActiveSubscriptionInfoList(); 60 61 if (subInfoList == null) { 62 return DISABLED_FOR_USER; 63 } 64 65 final boolean isAdmin = mUserManager.isAdminUser(); 66 if (isAdmin && (!isHideSimLockSetting(subInfoList))) { 67 return AVAILABLE; 68 } 69 70 return DISABLED_FOR_USER; 71 } 72 73 @Override displayPreference(PreferenceScreen screen)74 public void displayPreference(PreferenceScreen screen) { 75 super.displayPreference(screen); 76 final Preference preference = screen.findPreference(getPreferenceKey()); 77 if (preference == null) { 78 return; 79 } 80 // Disable SIM lock if there is no ready SIM card. 81 preference.setEnabled(isSimReady()); 82 } 83 84 /* Return true if a SIM is ready for locking. 85 * TODO: consider adding to TelephonyManager or SubscritpionManasger. 86 */ isSimReady()87 private boolean isSimReady() { 88 final List<SubscriptionInfo> subInfoList = 89 mSubscriptionManager.getActiveSubscriptionInfoList(); 90 if (subInfoList == null) { 91 return false; 92 } 93 94 for (SubscriptionInfo subInfo : subInfoList) { 95 final int simState = mTelephonyManager.getSimState(subInfo.getSimSlotIndex()); 96 if ((simState != TelephonyManager.SIM_STATE_ABSENT) 97 && (simState != TelephonyManager.SIM_STATE_UNKNOWN) 98 && (simState != TelephonyManager.SIM_STATE_PERM_DISABLED)) { 99 return true; 100 } 101 } 102 return false; 103 } 104 isHideSimLockSetting(List<SubscriptionInfo> subInfoList)105 private boolean isHideSimLockSetting(List<SubscriptionInfo> subInfoList) { 106 if (subInfoList == null) { 107 return true; 108 } 109 110 for (SubscriptionInfo subInfo : subInfoList) { 111 final TelephonyManager telephonyManager = mTelephonyManager 112 .createForSubscriptionId(subInfo.getSubscriptionId()); 113 final PersistableBundle bundle = mCarrierConfigManager.getConfigForSubId( 114 subInfo.getSubscriptionId()); 115 if (telephonyManager.hasIccCard() && bundle != null 116 && !bundle.getBoolean(CarrierConfigManager.KEY_HIDE_SIM_LOCK_SETTINGS_BOOL)) { 117 // one or more sims show sim lock setting UI. 118 return false; 119 } 120 } 121 122 return true; 123 } 124 } 125