lazyauthorizationpolicy.java

来自「基于Jabber协议的即时消息服务器」· Java 代码 · 共 52 行

/**
 * $RCSfile$
 * $Revision: $
 * $Date: 2006-04-20 10:46:24 -0500 (Thu, 20 Apr 2006) $
 *
 * Copyright (C) 2004 Jive Software. All rights reserved.
 *
 * This software is published under the terms of the GNU Public License (GPL),
 * a copy of which is included in this distribution.
 */

package org.jivesoftware.wildfire.sasl;

/**
 * This policy will authorize any principal who's username matches exactly 
 * the username of the JID. This means when cross realm authentication is 
 * allowed, user@REALM_A.COM and user@REALM_B.COM could both authorize as
 * user@servername, so there is some risk here. But if usernames across the
 *
 * @author Jay Kline
 */
public class LazyAuthorizationPolicy extends AbstractAuthorizationPolicy implements AuthorizationProvider {

    /**
     * Returns true if the principal is explicity authorized to the JID
     *
     * @param username The username requested.
     * @param principal The principal requesting the username.
     * @return true is the user is authorized to be principal
     */
    public boolean authorize(String username, String principal) {
        return (principal.startsWith(username+"@"));
    }

    /**
     * Returns the short name of the Policy
     *
     * @return The short name of the Policy
     */
    public String name() {
        return "Lazy";
    }

    /**
     * Returns a description of the Policy
     *
     * @return The description of the Policy.
     */
    public String description() {
        return "This policy will authorize any principal who's username matches exactly the username of the JID. This means when cross realm authentication is allowed, user@REALM_A.COM and user@REALM_B.COM could both authorize as user@servername, so there is some risk here. But if usernames across the realms are unique, this can be very helpful.";
    }
}