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 .createForAllUserProfiles(); 50 mTelephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); 51 } 52 53 @Override getAvailabilityStatus()54 public int getAvailabilityStatus() { 55 if (!SubscriptionUtil.isSimHardwareVisible(mContext)) { 56 return UNSUPPORTED_ON_DEVICE; 57 } 58 59 final List<SubscriptionInfo> subInfoList = 60 mSubscriptionManager.getActiveSubscriptionInfoList(); 61 62 if (subInfoList == null) { 63 return DISABLED_FOR_USER; 64 } 65 66 final boolean isAdmin = mUserManager.isAdminUser(); 67 if (isAdmin && (!isHideSimLockSetting(subInfoList))) { 68 return AVAILABLE; 69 } 70 71 return DISABLED_FOR_USER; 72 } 73 74 @Override displayPreference(PreferenceScreen screen)75 public void displayPreference(PreferenceScreen screen) { 76 super.displayPreference(screen); 77 final Preference preference = screen.findPreference(getPreferenceKey()); 78 if (preference == null) { 79 return; 80 } 81 // Disable SIM lock if there is no ready SIM card. 82 preference.setEnabled(isSimReady()); 83 } 84 85 /* Return true if a SIM is ready for locking. 86 * TODO: consider adding to TelephonyManager or SubscritpionManasger. 87 */ isSimReady()88 private boolean isSimReady() { 89 final List<SubscriptionInfo> subInfoList = 90 mSubscriptionManager.getActiveSubscriptionInfoList(); 91 if (subInfoList == null) { 92 return false; 93 } 94 95 for (SubscriptionInfo subInfo : subInfoList) { 96 final int simState = mTelephonyManager.getSimState(subInfo.getSimSlotIndex()); 97 if ((simState != TelephonyManager.SIM_STATE_ABSENT) 98 && (simState != TelephonyManager.SIM_STATE_UNKNOWN) 99 && (simState != TelephonyManager.SIM_STATE_PERM_DISABLED)) { 100 return true; 101 } 102 } 103 return false; 104 } 105 isHideSimLockSetting(List<SubscriptionInfo> subInfoList)106 private boolean isHideSimLockSetting(List<SubscriptionInfo> subInfoList) { 107 if (subInfoList == null) { 108 return true; 109 } 110 111 for (SubscriptionInfo subInfo : subInfoList) { 112 final TelephonyManager telephonyManager = mTelephonyManager 113 .createForSubscriptionId(subInfo.getSubscriptionId()); 114 final PersistableBundle bundle = mCarrierConfigManager.getConfigForSubId( 115 subInfo.getSubscriptionId()); 116 if (telephonyManager.hasIccCard() && bundle != null 117 && !bundle.getBoolean(CarrierConfigManager.KEY_HIDE_SIM_LOCK_SETTINGS_BOOL)) { 118 // one or more sims show sim lock setting UI. 119 return false; 120 } 121 } 122 123 return true; 124 } 125 } 126