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1   /* Copyright 2004, 2005 Acegi Technology Pty Limited
2    *
3    * Licensed under the Apache License, Version 2.0 (the "License");
4    * you may not use this file except in compliance with the License.
5    * You may obtain a copy of the License at
6    *
7    *     http://www.apache.org/licenses/LICENSE-2.0
8    *
9    * Unless required by applicable law or agreed to in writing, software
10   * distributed under the License is distributed on an "AS IS" BASIS,
11   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12   * See the License for the specific language governing permissions and
13   * limitations under the License.
14   */
15  
16  package org.acegisecurity.providers.cas.proxy;
17  
18  import java.util.List;
19  
20  import org.acegisecurity.AcegiMessageSource;
21  import org.acegisecurity.providers.cas.CasProxyDecider;
22  import org.acegisecurity.providers.cas.ProxyUntrustedException;
23  import org.apache.commons.logging.Log;
24  import org.apache.commons.logging.LogFactory;
25  import org.springframework.beans.factory.InitializingBean;
26  import org.springframework.context.MessageSource;
27  import org.springframework.context.MessageSourceAware;
28  import org.springframework.context.support.MessageSourceAccessor;
29  import org.springframework.util.Assert;
30  
31  
32  /***
33   * Accepts no proxied requests.
34   * 
35   * <P>
36   * This class should be used if only service tickets wish to be accepted (ie no
37   * proxy tickets at all).
38   * </p>
39   */
40  public class RejectProxyTickets implements CasProxyDecider, MessageSourceAware,
41      InitializingBean {
42      //~ Static fields/initializers =============================================
43  
44      private static final Log logger = LogFactory.getLog(RejectProxyTickets.class);
45  
46      //~ Instance fields ========================================================
47  
48      protected MessageSourceAccessor messages = AcegiMessageSource.getAccessor();
49  
50      //~ Methods ================================================================
51  
52      public void afterPropertiesSet() throws Exception {
53          Assert.notNull(this.messages, "A message source must be set");
54      }
55  
56      public void confirmProxyListTrusted(List proxyList)
57          throws ProxyUntrustedException {
58          Assert.notNull(proxyList, "proxyList cannot be null");
59  
60          if (proxyList.size() == 0) {
61              // A Service Ticket (not a Proxy Ticket)
62              return;
63          }
64  
65          if (logger.isDebugEnabled()) {
66              logger.debug("Proxies are unacceptable; proxy list provided: "
67                  + proxyList.toString());
68          }
69  
70          throw new ProxyUntrustedException(messages.getMessage(
71                  "RejectProxyTickets.reject", "Proxy tickets are rejected"));
72      }
73  
74      public void setMessageSource(MessageSource messageSource) {
75          this.messages = new MessageSourceAccessor(messageSource);
76      }
77  }