| /* |
| * Copyright (C) 2012 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.keyguard; |
| |
| import android.app.admin.DevicePolicyManager; |
| import android.content.Context; |
| import android.telephony.SubscriptionManager; |
| |
| import com.android.internal.telephony.IccCardConstants; |
| import com.android.internal.widget.LockPatternUtils; |
| |
| public class KeyguardSecurityModel { |
| |
| /** |
| * The different types of security available. |
| * @see KeyguardSecurityContainer#showSecurityScreen |
| */ |
| public enum SecurityMode { |
| Invalid, // NULL state |
| None, // No security enabled |
| Pattern, // Unlock by drawing a pattern. |
| Password, // Unlock by entering an alphanumeric password |
| PIN, // Strictly numeric password |
| SimPin, // Unlock by entering a sim pin. |
| SimPuk // Unlock by entering a sim puk |
| } |
| |
| private final Context mContext; |
| private final boolean mIsPukScreenAvailable; |
| |
| private LockPatternUtils mLockPatternUtils; |
| |
| KeyguardSecurityModel(Context context) { |
| mContext = context; |
| mLockPatternUtils = new LockPatternUtils(context); |
| mIsPukScreenAvailable = mContext.getResources().getBoolean( |
| com.android.internal.R.bool.config_enable_puk_unlock_screen); |
| } |
| |
| void setLockPatternUtils(LockPatternUtils utils) { |
| mLockPatternUtils = utils; |
| } |
| |
| SecurityMode getSecurityMode(int userId) { |
| KeyguardUpdateMonitor monitor = KeyguardUpdateMonitor.getInstance(mContext); |
| |
| if (SubscriptionManager.isValidSubscriptionId( |
| monitor.getNextSubIdForState(IccCardConstants.State.PIN_REQUIRED))) { |
| return SecurityMode.SimPin; |
| } |
| |
| if (mIsPukScreenAvailable && SubscriptionManager.isValidSubscriptionId( |
| monitor.getNextSubIdForState(IccCardConstants.State.PUK_REQUIRED))) { |
| return SecurityMode.SimPuk; |
| } |
| |
| final int security = mLockPatternUtils.getActivePasswordQuality(userId); |
| switch (security) { |
| case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC: |
| case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX: |
| return SecurityMode.PIN; |
| |
| case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC: |
| case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC: |
| case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX: |
| case DevicePolicyManager.PASSWORD_QUALITY_MANAGED: |
| return SecurityMode.Password; |
| |
| case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING: |
| return SecurityMode.Pattern; |
| case DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED: |
| return SecurityMode.None; |
| |
| default: |
| throw new IllegalStateException("Unknown security quality:" + security); |
| } |
| } |
| } |