/*

 * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.net.httpserver;

import java.net.*;

import java.io.*;

import java.util.*;

import java.security.Principal;

/**

 * Represents a user authenticated by HTTP Basic or Digest

 * authentication.

 */

public class HttpPrincipal implements Principal {

    private String username, realm;

    /**

     * creates a HttpPrincipal from the given username and realm

     * @param username The name of the user within the realm

     * @param realm The realm.

     * @throws NullPointerException if either username or realm are null

     */

    public HttpPrincipal (String username, String realm) {

        if (username == null || realm == null) {

            throw new NullPointerException();

        }

        this.username = username;

        this.realm = realm;

    }

    /**

     * Compares two HttpPrincipal. Returns <code>true</code>

     * if <i>another</i> is an instance of HttpPrincipal, and its

     * username and realm are equal to this object's username

     * and realm. Returns <code>false</code> otherwise.

     */

    public boolean equals (Object another) {

        if (!(another instanceof HttpPrincipal)) {

            return false;

        }

        HttpPrincipal theother = (HttpPrincipal)another;

        return (username.equals(theother.username) &&

                realm.equals(theother.realm));

    }

    /**

     * returns the contents of this principal in the form

     * <i>realm:username</i>

     */

    public String getName() {

        return username;

    }

    /**

     * returns the username this object was created with.

     */

    public String getUsername() {

        return username;

    }

    /**

     * returns the realm this object was created with.

     */

    public String getRealm() {

        return realm;

    }

    /**

     * returns a hashcode for this HttpPrincipal. This is calculated

     * as <code>(getUsername()+getRealm().hashCode()</code>

     */

    public int hashCode() {

        return (username+realm).hashCode();

    }

    /**

     * returns the same string as getName()

     */

    public String toString() {

        return getName();

    }

}