| /* |
| * 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.jsecurity.web.filter.authc; |
| |
| import org.jsecurity.web.filter.PathMatchingFilter; |
| |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| |
| /** |
| * Filter that allows access to a path immeidately without performing security checks of any kind. |
| * <p/> |
| * This filter is useful primarily in exclusionary policies, where you have defined a url pattern |
| * to require a certain security level, but maybe only subset of urls in that pattern should allow any access. |
| * <p/> |
| * For example, if you had a user-only section of a website, you might want to require that access to |
| * any url in that section must be from an authenticated user. |
| * <p/> |
| * Here is how that would look in the JSecurityFilter configuration: |
| * <p/> |
| * <code>[urls]<br/> |
| * /user/** = authc</code> |
| * <p/> |
| * But if you wanted <code>/user/signup/**</code> to be available to anyone, you have to exclude that path since |
| * it is a subset of the first. This is where the AnonymousFilter ('anon') is useful: |
| * <p/> |
| * <code>[urls]<br/> |
| * /user/signup/** = anon<br/> |
| * /user/** = authc</code>> |
| * <p/> |
| * Since the url pattern definitions follow a 'first match wins' paradigm, the <code>anon</code> filter will |
| * match the <code>/user/signup/**</code> paths and the <code>/user/**</code> path chain will not be evaluated. |
| * |
| * @author Jeremy Haile |
| * @author Les Hazlewood |
| * @since 0.9 |
| */ |
| public class AnonymousFilter extends PathMatchingFilter { |
| |
| /** |
| * Always returns <code>true</code> allowing unchecked access to the underlying path or resource. |
| * |
| * @return <code>true</code> always, allowing unchecked access to the underlying path or resource. |
| */ |
| @Override |
| public boolean onPreHandle(ServletRequest request, ServletResponse response, Object mappedValue) { |
| // Always return true since we allow access to anyone |
| return true; |
| } |
| |
| } |