io.mapzone.controller.um.repository.AuthToken.java Source code

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Here is the source code for io.mapzone.controller.um.repository.AuthToken.java

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/* 
 * polymap.org
 * Copyright (C) 2016, the @authors. All rights reserved.
 *
 * 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 3.0 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.
 */
package io.mapzone.controller.um.repository;

import java.math.BigInteger;
import java.security.SecureRandom;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.polymap.core.runtime.Lazy;
import org.polymap.core.runtime.LockedLazyInit;

/**
 * 
 *
 * @author Falko Brutigam
 */
public class AuthToken {

    private static Log log = LogFactory.getLog(AuthToken.class);

    private static final Lazy<SecureRandom> random = new LockedLazyInit(() -> new SecureRandom());

    /**
     * Generates and returns a new AuthToken. 
     */
    public static AuthToken create() {
        return new AuthToken();
    }

    public static AuthToken parse(String token) {
        return new AuthToken(token);
    }

    // instance *******************************************

    private BigInteger data;

    private AuthToken() {
        // http://stackoverflow.com/questions/41107/how-to-generate-a-random-alpha-numeric-string
        data = new BigInteger(130, random.get());
    }

    private AuthToken(String token) {
        data = new BigInteger(token, 32);
    }

    public boolean isValid(String token) {
        return toString().equals(token);
    }

    @Override
    public String toString() {
        return data.toString(32);
    }

    @Override
    public boolean equals(Object obj) {
        // XXX Auto-generated method stub
        throw new RuntimeException("not yet implemented.");
    }

}