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/*
* 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() {
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(
KeyguardUpdateMonitor.getCurrentUser());
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:
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);
}
}
}
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