01: /**
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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: */package org.apache.geronimo.tomcat.valve;
17:
18: import java.io.IOException;
19:
20: import javax.servlet.ServletException;
21: import javax.security.auth.Subject;
22:
23: import org.apache.catalina.valves.ValveBase;
24: import org.apache.catalina.connector.Request;
25: import org.apache.catalina.connector.Response;
26: import org.apache.geronimo.security.ContextManager;
27: import org.apache.geronimo.security.Callers;
28:
29: /**
30: * @version $Rev: 476049 $ $Date: 2006-11-16 20:35:17 -0800 (Thu, 16 Nov 2006) $
31: */
32: public class DefaultSubjectValve extends ValveBase {
33:
34: private final Subject defaultSubject;
35:
36: public DefaultSubjectValve(Subject defaultSubject) {
37: this .defaultSubject = defaultSubject;
38: }
39:
40: public void invoke(Request request, Response response)
41: throws IOException, ServletException {
42: Callers oldCallers = null;
43: boolean setSubject = false;
44: if (defaultSubject != null) {
45: oldCallers = ContextManager.getCallers();
46: setSubject = oldCallers == null
47: || oldCallers.getCurrentCaller() == null;
48: }
49: if (setSubject) {
50: ContextManager.setCallers(defaultSubject, defaultSubject);
51: try {
52: getNext().invoke(request, response);
53: } finally {
54: ContextManager.popCallers(oldCallers);
55: }
56: } else {
57: getNext().invoke(request, response);
58: }
59:
60: }
61: }
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