| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.jackrabbit.core.security.principal; |
| |
| import java.security.Principal; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| |
| import org.apache.jackrabbit.api.security.principal.GroupPrincipal; |
| |
| /** |
| * Helper class to deal with the migration between the 2 types of groups |
| * |
| */ |
| public final class GroupPrincipals { |
| |
| private GroupPrincipals() { |
| } |
| |
| /** |
| * Checks if the provided principal is a group. |
| * |
| * @param principal |
| * to be checked. |
| * |
| * @return true if the principal is of type group. |
| */ |
| public static boolean isGroup(Principal principal) { |
| return principal instanceof GroupPrincipal; |
| } |
| |
| /** |
| * Returns an enumeration of the members in the group. |
| * @param principal the principal whose membership is listed. |
| * @return an enumeration of the group members. |
| */ |
| public static Enumeration<? extends Principal> members(Principal principal) { |
| if (principal instanceof GroupPrincipal) { |
| return ((GroupPrincipal) principal).members(); |
| } |
| return Collections.emptyEnumeration(); |
| } |
| |
| /** |
| * Returns true if the passed principal is a member of the group. |
| * @param principal the principal whose members are being checked. |
| * @param member the principal whose membership is to be checked. |
| * @return true if the principal is a member of this group, false otherwise. |
| */ |
| public static boolean isMember(Principal principal, Principal member) { |
| if (principal instanceof GroupPrincipal) { |
| return ((GroupPrincipal) principal).isMember(member); |
| } |
| return false; |
| } |
| } |