| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.directory.server.core.api.authn.ppolicy; |
| |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| |
| |
| /** |
| * The default password validator. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class DefaultPasswordValidator implements PasswordValidator |
| { |
| |
| /** the default validator's instance */ |
| public static final DefaultPasswordValidator INSTANCE = new DefaultPasswordValidator(); |
| |
| |
| /** |
| * Creates a new instance of DefaultPasswordValidator. |
| */ |
| public DefaultPasswordValidator() |
| { |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void validate( String password, Entry entry ) throws PasswordPolicyException |
| { |
| checkUsernameSubstring( password, entry ); |
| //TODO add more checks |
| } |
| |
| |
| /** |
| * The password does not contain three letter (or more) tokens from the user's account name. |
| * |
| * If the account name is less than three characters long, this check is not performed |
| * because the rate at which passwords would be rejected is too high. For each token that is |
| * three or more characters long, that token is searched for in the password; if it is present, |
| * the password change is rejected. For example, the name "First M. Last" would be split into |
| * three tokens: "First", "M", and "Last". Because the second token is only one character long, |
| * it would be ignored. Therefore, this user could not have a password that included either |
| * "first" or "last" as a substring anywhere in the password. All of these checks are |
| * case-insensitive. |
| */ |
| private void checkUsernameSubstring( String password, Entry entry ) throws PasswordPolicyException |
| { |
| String username = entry.getDn().getRdn().getValue().getString(); |
| |
| if ( username == null || username.trim().length() == 0 ) |
| { |
| return; |
| } |
| |
| String[] tokens = username.split( "[^a-zA-Z]" ); |
| |
| for ( String token : tokens ) |
| { |
| if ( ( token == null ) || ( token.length() < 4 ) ) |
| { |
| // Two short : continue with the next token |
| continue; |
| } |
| |
| if ( password.matches( "(?i).*" + token + ".*" ) ) |
| { |
| throw new PasswordPolicyException( "Password shouldn't contain parts of the username", 5 );// 5 == PasswordPolicyErrorEnum.INSUFFICIENT_PASSWORD_QUALITY |
| } |
| } |
| } |
| } |