1 /**
2 *
3 * Copyright 2005 The Apache Software Foundation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.geronimo.tomcat.valve;
18
19 import java.io.IOException;
20
21 import javax.servlet.ServletException;
22 import javax.security.auth.Subject;
23
24 import org.apache.catalina.valves.ValveBase;
25 import org.apache.catalina.connector.Request;
26 import org.apache.catalina.connector.Response;
27 import org.apache.geronimo.security.ContextManager;
28 import org.apache.geronimo.security.Callers;
29
30 /**
31 * @version $Rev: 431706 $ $Date: 2006-08-15 14:19:27 -0700 (Tue, 15 Aug 2006) $
32 */
33 public class DefaultSubjectValve extends ValveBase {
34
35 private final Subject defaultSubject;
36
37 public DefaultSubjectValve(Subject defaultSubject) {
38 this.defaultSubject = defaultSubject;
39 }
40
41 public void invoke(Request request, Response response) throws IOException, ServletException {
42 Callers oldCallers = null;
43 boolean setSubject = false;
44 if (defaultSubject != null) {
45 oldCallers = ContextManager.getCallers();
46 setSubject = oldCallers == null || oldCallers.getCurrentCaller() == null;
47 }
48 if (setSubject) {
49 ContextManager.setCallers(defaultSubject, defaultSubject);
50 try {
51 getNext().invoke(request, response);
52 } finally {
53 ContextManager.popCallers(oldCallers);
54 }
55 } else {
56 getNext().invoke(request, response);
57 }
58
59 }
60 }