Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
DefaultLoginValve |
|
| 3.2;3,2 |
1 | package org.apache.turbine.pipeline; | |
2 | ||
3 | ||
4 | /* | |
5 | * Licensed to the Apache Software Foundation (ASF) under one | |
6 | * or more contributor license agreements. See the NOTICE file | |
7 | * distributed with this work for additional information | |
8 | * regarding copyright ownership. The ASF licenses this file | |
9 | * to you under the Apache License, Version 2.0 (the | |
10 | * "License"); you may not use this file except in compliance | |
11 | * with the License. You may obtain a copy of the License at | |
12 | * | |
13 | * http://www.apache.org/licenses/LICENSE-2.0 | |
14 | * | |
15 | * Unless required by applicable law or agreed to in writing, | |
16 | * software distributed under the License is distributed on an | |
17 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
18 | * KIND, either express or implied. See the License for the | |
19 | * specific language governing permissions and limitations | |
20 | * under the License. | |
21 | */ | |
22 | ||
23 | ||
24 | import java.io.IOException; | |
25 | import java.util.ArrayList; | |
26 | import java.util.Enumeration; | |
27 | import java.util.List; | |
28 | ||
29 | import javax.servlet.http.HttpSession; | |
30 | ||
31 | import org.apache.turbine.Turbine; | |
32 | import org.apache.turbine.TurbineConstants; | |
33 | import org.apache.turbine.modules.Action; | |
34 | import org.apache.turbine.modules.ActionLoader; | |
35 | import org.apache.turbine.services.assemblerbroker.TurbineAssemblerBroker; | |
36 | import org.apache.turbine.services.velocity.VelocityService; | |
37 | import org.apache.turbine.util.RunData; | |
38 | import org.apache.turbine.util.TurbineException; | |
39 | import org.apache.turbine.util.template.TemplateInfo; | |
40 | ||
41 | /** | |
42 | * Handles the Login and Logout actions in the request process | |
43 | * cycle. | |
44 | * | |
45 | * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a> | |
46 | * @author <a href="mailto:dlr@apache.org">Daniel Rall</a> | |
47 | * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a> | |
48 | * @version $Id: DefaultLoginValve.java 1078552 2011-03-06 19:58:46Z tv $ | |
49 | */ | |
50 | public class DefaultLoginValve | |
51 | extends AbstractValve | |
52 | { | |
53 | private ActionLoader actionLoader; | |
54 | ||
55 | /** | |
56 | * Here we can setup objects that are thread safe and can be | |
57 | * reused. We setup the session validator and the access | |
58 | * controller. | |
59 | */ | |
60 | public DefaultLoginValve() | |
61 | throws Exception | |
62 | 2 | { |
63 | // empty constructor | |
64 | 2 | } |
65 | ||
66 | /** | |
67 | * Initialize this valve for use in a pipeline. | |
68 | * | |
69 | * @see org.apache.turbine.pipeline.AbstractValve#initialize() | |
70 | */ | |
71 | @Override | |
72 | public void initialize() throws Exception | |
73 | { | |
74 | 96 | super.initialize(); |
75 | ||
76 | 96 | this.actionLoader = (ActionLoader)TurbineAssemblerBroker.getLoader(Action.NAME); |
77 | 96 | } |
78 | ||
79 | /** | |
80 | * @see org.apache.turbine.Valve#invoke(RunData, ValveContext) | |
81 | */ | |
82 | @Override | |
83 | public void invoke(PipelineData pipelineData, ValveContext context) | |
84 | throws IOException, TurbineException | |
85 | { | |
86 | try | |
87 | { | |
88 | 4 | process(pipelineData); |
89 | } | |
90 | 0 | catch (Exception e) |
91 | { | |
92 | 0 | throw new TurbineException(e); |
93 | 4 | } |
94 | ||
95 | // Pass control to the next Valve in the Pipeline | |
96 | 4 | context.invokeNext(pipelineData); |
97 | 2 | } |
98 | ||
99 | /** | |
100 | * Handles user sessions, parsing of the action from the query | |
101 | * string, and access control. | |
102 | * | |
103 | * @param data The run-time data. | |
104 | */ | |
105 | protected void process(PipelineData pipelineData) | |
106 | throws Exception | |
107 | { | |
108 | 4 | RunData data = getRunData(pipelineData); |
109 | // Special case for login and logout, this must happen before the | |
110 | // session validator is executed in order either to allow a user to | |
111 | // even login, or to ensure that the session validator gets to | |
112 | // mandate its page selection policy for non-logged in users | |
113 | // after the logout has taken place. | |
114 | 4 | String actionName = data.getAction(); |
115 | 4 | if (data.hasAction() && |
116 | actionName.equalsIgnoreCase | |
117 | (Turbine.getConfiguration().getString(TurbineConstants.ACTION_LOGIN_KEY)) || | |
118 | actionName.equalsIgnoreCase | |
119 | (Turbine.getConfiguration().getString(TurbineConstants.ACTION_LOGOUT_KEY))) | |
120 | { | |
121 | // If a User is logging in, we should refresh the | |
122 | // session here. Invalidating session and starting a | |
123 | // new session would seem to be a good method, but I | |
124 | // (JDM) could not get this to work well (it always | |
125 | // required the user to login twice). Maybe related | |
126 | // to JServ? If we do not clear out the session, it | |
127 | // is possible a new User may accidently (if they | |
128 | // login incorrectly) continue on with information | |
129 | // associated with the previous User. Currently the | |
130 | // only keys stored in the session are "turbine.user" | |
131 | // and "turbine.acl". | |
132 | 2 | if (actionName.equalsIgnoreCase |
133 | (Turbine.getConfiguration().getString(TurbineConstants.ACTION_LOGIN_KEY))) | |
134 | { | |
135 | @SuppressWarnings("unchecked") | |
136 | 2 | Enumeration<String> names = data.getSession().getAttributeNames(); |
137 | 2 | if (names != null) |
138 | { | |
139 | // copy keys into a new list, so we can clear the session | |
140 | // and not get ConcurrentModificationException | |
141 | 0 | List<String> nameList = new ArrayList<String>(); |
142 | 0 | while (names.hasMoreElements()) |
143 | { | |
144 | 0 | nameList.add(names.nextElement()); |
145 | } | |
146 | ||
147 | 0 | HttpSession session = data.getSession(); |
148 | 0 | for (String name : nameList) |
149 | { | |
150 | try | |
151 | { | |
152 | 0 | session.removeAttribute(name); |
153 | } | |
154 | 0 | catch (IllegalStateException invalidatedSession) |
155 | { | |
156 | 0 | break; |
157 | 0 | } |
158 | } | |
159 | } | |
160 | } | |
161 | ||
162 | 2 | actionLoader.exec(pipelineData, data.getAction()); |
163 | 2 | cleanupTemplateContext(data); |
164 | 2 | data.setAction(null); |
165 | } | |
166 | 4 | } |
167 | /** | |
168 | * cleans the Velocity Context if available. | |
169 | * | |
170 | * @param data A RunData Object | |
171 | * | |
172 | * @throws Exception A problem while cleaning out the Template Context occured. | |
173 | */ | |
174 | private void cleanupTemplateContext(RunData data) | |
175 | throws Exception | |
176 | { | |
177 | // This is Velocity specific and shouldn't be done here. | |
178 | // But this is a band aid until we get real listeners | |
179 | // here. | |
180 | 2 | TemplateInfo ti = data.getTemplateInfo(); |
181 | 2 | if (ti != null) |
182 | { | |
183 | 2 | ti.removeTemp(VelocityService.CONTEXT); |
184 | } | |
185 | 2 | } |
186 | } |