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/*
* Copyright (C) 2019 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 android.app.admin;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_COMPLEX;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_NUMERIC;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_SOMETHING;
import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
import static com.android.internal.widget.LockPatternUtils.CREDENTIAL_TYPE_NONE;
import static com.android.internal.widget.LockPatternUtils.CREDENTIAL_TYPE_PASSWORD;
import static com.android.internal.widget.LockPatternUtils.CREDENTIAL_TYPE_PATTERN;
import static com.android.internal.widget.LockPatternUtils.CREDENTIAL_TYPE_PIN;
/**
* {@hide}
*/
public class PasswordPolicy {
public static final int DEF_MINIMUM_LENGTH = 0;
public static final int DEF_MINIMUM_LETTERS = 1;
public static final int DEF_MINIMUM_UPPER_CASE = 0;
public static final int DEF_MINIMUM_LOWER_CASE = 0;
public static final int DEF_MINIMUM_NUMERIC = 1;
public static final int DEF_MINIMUM_SYMBOLS = 1;
public static final int DEF_MINIMUM_NON_LETTER = 0;
public int quality = PASSWORD_QUALITY_UNSPECIFIED;
public int length = DEF_MINIMUM_LENGTH;
public int letters = DEF_MINIMUM_LETTERS;
public int upperCase = DEF_MINIMUM_UPPER_CASE;
public int lowerCase = DEF_MINIMUM_LOWER_CASE;
public int numeric = DEF_MINIMUM_NUMERIC;
public int symbols = DEF_MINIMUM_SYMBOLS;
public int nonLetter = DEF_MINIMUM_NON_LETTER;
/**
* Returns a minimum password metrics that the password should have to satisfy current policy.
*/
public PasswordMetrics getMinMetrics() {
if (quality == PASSWORD_QUALITY_UNSPECIFIED) {
return new PasswordMetrics(CREDENTIAL_TYPE_NONE);
} else if (quality == PASSWORD_QUALITY_BIOMETRIC_WEAK
|| quality == PASSWORD_QUALITY_SOMETHING) {
return new PasswordMetrics(CREDENTIAL_TYPE_PATTERN);
} else if (quality == PASSWORD_QUALITY_NUMERIC
|| quality == PASSWORD_QUALITY_NUMERIC_COMPLEX) {
PasswordMetrics result = new PasswordMetrics(CREDENTIAL_TYPE_PIN);
result.length = length;
if (quality == PASSWORD_QUALITY_NUMERIC_COMPLEX) {
result.seqLength = PasswordMetrics.MAX_ALLOWED_SEQUENCE;
}
return result;
} // quality is ALPHABETIC or stronger.
PasswordMetrics result = new PasswordMetrics(CREDENTIAL_TYPE_PASSWORD);
result.length = length;
if (quality == PASSWORD_QUALITY_ALPHABETIC) {
result.nonNumeric = 1;
} else if (quality == PASSWORD_QUALITY_ALPHANUMERIC) {
result.numeric = 1;
result.nonNumeric = 1;
} else if (quality == PASSWORD_QUALITY_COMPLEX) {
result.numeric = numeric;
result.letters = letters;
result.upperCase = upperCase;
result.lowerCase = lowerCase;
result.nonLetter = nonLetter;
result.symbols = symbols;
}
return result;
}
}
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