001/*
002 * Licensed to DuraSpace under one or more contributor license agreements.
003 * See the NOTICE file distributed with this work for additional information
004 * regarding copyright ownership.
005 *
006 * DuraSpace licenses this file to you under the Apache License,
007 * Version 2.0 (the "License"); you may not use this file except in
008 * compliance with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.fcrepo.auth.common;
019
020import java.util.Map;
021
022import javax.jcr.Credentials;
023
024import org.apache.shiro.SecurityUtils;
025import org.modeshape.jcr.ExecutionContext;
026import org.modeshape.jcr.security.AuthenticationProvider;
027
028/**
029 * Modeshape authentication provider that gets its security context from the current Shiro Subject.
030 *
031 * @author peichman
032 */
033public class ShiroAuthenticationProvider implements AuthenticationProvider {
034
035    @Override
036    public ExecutionContext authenticate(final Credentials credentials, final String repositoryName,
037            final String workspaceName, final ExecutionContext repositoryContext,
038            final Map<String, Object> sessionAttributes) {
039
040        if (credentials == null) {
041            return null;
042        }
043
044        return repositoryContext.with(new ShiroSecurityContext(SecurityUtils.getSubject()));
045    }
046
047}