/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.keyguard;
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import android.app.admin.DevicePolicyManager;
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import android.content.Context;
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import android.telephony.SubscriptionManager;
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import com.android.internal.telephony.IccCardConstants;
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import com.android.internal.widget.LockPatternUtils;
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public class KeyguardSecurityModel {
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/**
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* The different types of security available.
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* @see KeyguardSecurityContainer#showSecurityScreen
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*/
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public enum SecurityMode {
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Invalid, // NULL state
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None, // No security enabled
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Pattern, // Unlock by drawing a pattern.
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Password, // Unlock by entering an alphanumeric password
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PIN, // Strictly numeric password
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SimPin, // Unlock by entering a sim pin.
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SimPuk // Unlock by entering a sim puk
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}
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private final Context mContext;
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private final boolean mIsPukScreenAvailable;
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private LockPatternUtils mLockPatternUtils;
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KeyguardSecurityModel(Context context) {
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mContext = context;
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mLockPatternUtils = new LockPatternUtils(context);
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mIsPukScreenAvailable = mContext.getResources().getBoolean(
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com.android.internal.R.bool.config_enable_puk_unlock_screen);
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}
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void setLockPatternUtils(LockPatternUtils utils) {
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mLockPatternUtils = utils;
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}
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SecurityMode getSecurityMode(int userId) {
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KeyguardUpdateMonitor monitor = KeyguardUpdateMonitor.getInstance(mContext);
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if (mIsPukScreenAvailable && SubscriptionManager.isValidSubscriptionId(
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monitor.getNextSubIdForState(IccCardConstants.State.PUK_REQUIRED))) {
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return SecurityMode.SimPuk;
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}
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if (SubscriptionManager.isValidSubscriptionId(
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monitor.getNextSubIdForState(IccCardConstants.State.PIN_REQUIRED))) {
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return SecurityMode.SimPin;
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}
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final int security = mLockPatternUtils.getActivePasswordQuality(userId);
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switch (security) {
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case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC:
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case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX:
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return SecurityMode.PIN;
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case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC:
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case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC:
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case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX:
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case DevicePolicyManager.PASSWORD_QUALITY_MANAGED:
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return SecurityMode.Password;
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case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING:
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return SecurityMode.Pattern;
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case DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED:
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return SecurityMode.None;
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default:
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throw new IllegalStateException("Unknown security quality:" + security);
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}
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}
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}
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