strictrolecheckpolicy.java

是离开的肌肤了卡机是离开的就富利卡及是了的开发及拉考试及的福利科技阿斯利康的肌肤莱卡及时的离开福建阿斯顿发

// ========================================================================
// $Id: StrictRoleCheckPolicy.java 1001 2006-09-23 09:31:51Z janb $
// Copyright 2003-2004 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at 
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================

package org.mortbay.jetty.plus.jaas;

import java.security.Principal;
import java.security.acl.Group;
import java.util.Enumeration;


/* ---------------------------------------------------- */
/** StrictRoleCheckPolicy
 * <p>Enforces that if a runAsRole is present, then the
 * role to check must be the same as that runAsRole and
 * the set of static roles is ignored.
 * 
 *
 * 
 * @org.apache.xbean.XBean description ="Check only topmost role in stack of roles for user"
 */
public class StrictRoleCheckPolicy implements RoleCheckPolicy
{

    public boolean checkRole (String roleName, Principal runAsRole, Group roles)
    {
        //check if this user has had any temporary role pushed onto
        //them. If so, then only check if the user has that role.
        if (runAsRole != null)
        {
            return (roleName.equals(runAsRole.getName()));
        }
        else
        {
            if (roles == null)
                return false;
            Enumeration rolesEnum = roles.members();
            boolean found = false;
            while (rolesEnum.hasMoreElements() && !found)
            {
                Principal p = (Principal)rolesEnum.nextElement();
                found = roleName.equals(p.getName());
            }
            return found;
        }
        
    }
    
}