Source Code Cross Referenced for NtlmHttpServletRequestWrapper.java in  » Portal » jetspeed-2.1.3 » org » apache » jetspeed » security » impl » ntlm » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » jetspeed 2.1.3 » org.apache.jetspeed.security.impl.ntlm 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


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:         */
17:        package org.apache.jetspeed.security.impl.ntlm;
18:
19:        import java.security.Principal;
20:
21:        import javax.servlet.http.HttpServletRequest;
22:        import javax.servlet.http.HttpServletRequestWrapper;
23:
24:        import org.apache.commons.lang.ArrayUtils;
25:        import org.apache.commons.lang.StringUtils;
26:
27:        /**
28:         * NtlmHttpServletRequestWrapper should be used in combination with an Ntml authentication filter (jCIFS).
29:         * This filter wraps the original request, setting the principal and remoteUser retrieved by Ntml 
30:         * authentication with the client. The wrapper Request sets the principal and remoteUser, <i>regardless</i> 
31:         * of the principal already present in the original request. This HttpServletRequestWrapper returns the principal 
32:         * from the original request when it's there, and otherwise returns the Ntml principal. When the
33:         * the Ntml principal is actually returned can be influenced by a comma-separated list of servlet urls: 
34:         *  only for these urls the Ntlm principal / remoteUser is ignored. 
35:         * @see NtlmHttpServletRequestFilter
36:         * @author <a href="mailto:d.dam@hippo.nl">Dennis Dam</a>
37:         * @version $Id$
38:         */
39:        public class NtlmHttpServletRequestWrapper extends
40:                HttpServletRequestWrapper {
41:            private Principal principal;
42:            private String remoteUser;
43:
44:            public NtlmHttpServletRequestWrapper(HttpServletRequest req,
45:                    String ignoreNtmlUrls) {
46:                super (req);
47:                if (req instanceof  HttpServletRequestWrapper) {
48:                    String[] urls = ignoreNtmlUrls != null ? StringUtils.split(
49:                            ignoreNtmlUrls, ',') : new String[] {};
50:                    String servletUrl = req.getServletPath();
51:                    Principal reqPrincipal = req.getUserPrincipal();
52:                    HttpServletRequest originalRequest = (HttpServletRequest) ((HttpServletRequestWrapper) req)
53:                            .getRequest();
54:                    /*
55:                     *  Original request principal has precedence over Ntml authenticated principal. This is needed
56:                     *  in the case that the Ntlm authenticated principal is not authorized by Jetspeed: a fallback login 
57:                     *  method can then be used. If Ntml authentication succeeds, then the principal from the
58:                     *  original request will be null.
59:                     */
60:                    if (originalRequest.getUserPrincipal() != null) {
61:                        principal = originalRequest.getUserPrincipal();
62:                    } else
63:                    /*
64:                     *   If no principal in the original request, take principal from Ntlm authentication, but
65:                     *   only if the current servlet url is not in the ignore list. The last
66:                     *   requirement is necessary when falling back to another authentication method, e.g. container-based
67:                     *   form authentication: these authentication methods might only work if there is no 
68:                     *   principal in the request.    
69:                     */
70:                    if (!ArrayUtils.contains(urls, servletUrl)
71:                            && reqPrincipal != null
72:                            && req.getRemoteUser() != null) {
73:                        principal = reqPrincipal;
74:                        remoteUser = req.getRemoteUser();
75:                    }
76:                } else {
77:                    principal = super .getUserPrincipal();
78:                }
79:            }
80:
81:            public Principal getUserPrincipal() {
82:                return principal;
83:            }
84:
85:            public String getRemoteUser() {
86:                return remoteUser;
87:            }
88:
89:        }
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