001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * 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,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.shiro.web.env;
020
021import org.apache.shiro.env.DefaultEnvironment;
022import org.apache.shiro.mgt.SecurityManager;
023import org.apache.shiro.web.filter.mgt.FilterChainResolver;
024import org.apache.shiro.web.mgt.WebSecurityManager;
025
026import javax.servlet.ServletContext;
027import java.util.Map;
028
029/**
030 * Default {@link WebEnvironment} implementation based on a backing {@link Map} instance.
031 *
032 * @since 1.2
033 */
034public class DefaultWebEnvironment extends DefaultEnvironment implements MutableWebEnvironment {
035
036    private static final String DEFAULT_FILTER_CHAIN_RESOLVER_NAME = "filterChainResolver";
037
038    private ServletContext servletContext;
039
040    public DefaultWebEnvironment() {
041        super();
042    }
043
044    public FilterChainResolver getFilterChainResolver() {
045        return getObject(DEFAULT_FILTER_CHAIN_RESOLVER_NAME, FilterChainResolver.class);
046    }
047
048    public void setFilterChainResolver(FilterChainResolver filterChainResolver) {
049        setObject(DEFAULT_FILTER_CHAIN_RESOLVER_NAME, filterChainResolver);
050    }
051
052    @Override
053    public SecurityManager getSecurityManager() throws IllegalStateException {
054        return getWebSecurityManager();
055    }
056
057    @Override
058    public void setSecurityManager(SecurityManager securityManager) {
059        assertWebSecurityManager(securityManager);
060        super.setSecurityManager(securityManager);
061    }
062
063    public WebSecurityManager getWebSecurityManager() {
064        SecurityManager sm = super.getSecurityManager();
065        assertWebSecurityManager(sm);
066        return (WebSecurityManager)sm;
067    }
068
069    public void setWebSecurityManager(WebSecurityManager wsm) {
070        super.setSecurityManager(wsm);
071    }
072
073    private void assertWebSecurityManager(SecurityManager sm) {
074        if (!(sm instanceof WebSecurityManager)) {
075            String msg = "SecurityManager instance must be a " + WebSecurityManager.class.getName() + " instance.";
076            throw new IllegalStateException(msg);
077        }
078    }
079
080    public ServletContext getServletContext() {
081        return this.servletContext;
082    }
083
084    public void setServletContext(ServletContext servletContext) {
085        this.servletContext = servletContext;
086    }
087}