| /* |
| * 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.sling.auth.core.impl; |
| |
| import javax.servlet.Servlet; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Properties; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.PropertyUnbounded; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.ReferencePolicy; |
| import org.apache.felix.scr.annotations.Service; |
| import org.apache.sling.api.SlingHttpServletRequest; |
| import org.apache.sling.api.SlingHttpServletResponse; |
| import org.apache.sling.api.auth.Authenticator; |
| import org.apache.sling.api.servlets.SlingAllMethodsServlet; |
| import org.apache.sling.auth.core.AuthUtil; |
| import org.osgi.framework.Constants; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * The <code>LogoutServlet</code> lets the Authenticator |
| * do the logout. |
| */ |
| @Component(metatype=true, label="Apache Sling Authentication Logout Servlet", |
| description="Servlet for logging out users through the authenticator service.") |
| @Service(value = Servlet.class) |
| @Properties( { |
| @Property(name = Constants.SERVICE_DESCRIPTION, value = "Authenticator Logout Servlet"), |
| @Property(name = Constants.SERVICE_VENDOR, value = "The Apache Software Foundation"), |
| @Property(name = "sling.servlet.methods", value = { "GET", "POST" } , |
| label = "Method", description = "Supported Methdos", unbounded=PropertyUnbounded.ARRAY) |
| }) |
| public class LogoutServlet extends SlingAllMethodsServlet { |
| |
| /** serialization UID */ |
| private static final long serialVersionUID = -1L; |
| |
| /** default log */ |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY, policy = ReferencePolicy.DYNAMIC) |
| private volatile Authenticator authenticator; |
| |
| /** |
| * The servlet is registered on this path. |
| */ |
| @Property(name = "sling.servlet.paths") |
| public static final String SERVLET_PATH = "/system/sling/logout"; |
| |
| @Override |
| protected void service(SlingHttpServletRequest request, |
| SlingHttpServletResponse response) { |
| |
| final Authenticator authenticator = this.authenticator; |
| if (authenticator != null) { |
| try { |
| AuthUtil.setLoginResourceAttribute(request, null); |
| authenticator.logout(request, response); |
| return; |
| } catch (IllegalStateException ise) { |
| log.error("service: Response already committed, cannot logout"); |
| return; |
| } |
| } |
| |
| log.error("service: Authenticator service missing, cannot logout"); |
| |
| // well, we don't really have something to say here, do we ? |
| response.setStatus(HttpServletResponse.SC_NO_CONTENT); |
| } |
| } |