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/*
 * @(#)HttpPrincipal.java	1.3 07/01/02
 *
 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

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 true
     * if another is an instance of HttpPrincipal, and its
     * username and realm are equal to this object's username
     * and realm. Returns false 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
     * realm:username
     */
    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 (getUsername()+getRealm().hashCode()
     */
    public int hashCode() {
	return (username+realm).hashCode();
    }

    /**
     * returns the same string as getName()
     */
    public String toString() {
	return getName();
    }
}





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