/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.domain.management.security.password.simple;
import java.io.InputStream;
import java.util.Iterator;
import java.util.Properties;
import java.util.Set;
import java.util.TreeSet;
import org.jboss.as.domain.management.security.password.Dictionary;
/**
* @author baranowb
*
*/
public class SimpleDictionary implements Dictionary {
protected Set<String> words = new TreeSet<String>();
public SimpleDictionary() {
InputStream is = Dictionary.class.getResourceAsStream("dictionary.properties");
if(is!=null){
this.init(is);
}else{
//log?
}
}
public SimpleDictionary(InputStream is) {
this.init(is);
}
protected void init(InputStream is) {
try {
Properties props = new Properties();
props.load(is);
Iterator it = props.keySet().iterator();
while (it.hasNext()) {
String word = (String) it.next();
words.add(word);
}
} catch (Exception ioe) {
ioe.printStackTrace();
}
}
/*
* (non-Javadoc)
*
* @see org.jboss.as.domain.management.security.password.Dictionary#dictionaryScore(java.lang.String)
*/
@Override
public int dictionarySequence(String password) {
// simple search.
if (password.length() == 0) {
return 0;
}
if (words.contains(password)) {
return password.length();
} else {
int higher = 0;
for (int index = 1; index < password.length(); index++) {
String tmp = password.substring(index);
int count = dictionarySequence(tmp);
if (count > 0 && higher<count) {
higher = count;
}
}
for (int index = password.length() - 1; 1 < index; index--) {
String tmp = password.substring(0, index);
int count = dictionarySequence(tmp);
if (count > 0 && higher<count) {
higher = count;
}
}
return higher;
}
}
}