01: /*
02: * $Id: ChatInterceptor.java 471756 2006-11-06 15:01:43Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "License"); you may not use this file except in compliance
10: * with the License. You may obtain a copy of the License at
11: *
12: * http://www.apache.org/licenses/LICENSE-2.0
13: *
14: * Unless required by applicable law or agreed to in writing,
15: * software distributed under the License is distributed on an
16: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17: * KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations
19: * under the License.
20: */
21: package org.apache.struts2.showcase.chat;
22:
23: import javax.servlet.http.HttpSession;
24:
25: import org.apache.commons.logging.Log;
26: import org.apache.commons.logging.LogFactory;
27:
28: import com.opensymphony.xwork2.Action;
29: import com.opensymphony.xwork2.ActionContext;
30: import com.opensymphony.xwork2.ActionInvocation;
31: import com.opensymphony.xwork2.interceptor.Interceptor;
32:
33: /**
34: * Authenticate showcase chat example, make sure everyone have a username.
35: */
36: public class ChatInterceptor implements Interceptor {
37:
38: private static final Log _log = LogFactory
39: .getLog(ChatInterceptor.class);
40:
41: private static final long serialVersionUID = 1L;
42:
43: public static final String CHAT_USER_SESSION_KEY = "ChatUserSessionKey";
44:
45: public void destroy() {
46: }
47:
48: public void init() {
49: }
50:
51: public String intercept(ActionInvocation invocation)
52: throws Exception {
53: HttpSession session = (HttpSession) ActionContext.getContext()
54: .get(ActionContext.SESSION);
55: User chatUser = (User) session
56: .getAttribute(CHAT_USER_SESSION_KEY);
57: if (chatUser == null) {
58: _log.debug("Chat user not logged in");
59: return Action.LOGIN;
60: }
61: return invocation.invoke();
62: }
63: }
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