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1   package org.apache.maven.wagon.tck.http.fixture;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.io.IOException;
23  import java.nio.charset.StandardCharsets;
24  
25  import javax.servlet.Filter;
26  import javax.servlet.FilterChain;
27  import javax.servlet.FilterConfig;
28  import javax.servlet.ServletException;
29  import javax.servlet.ServletRequest;
30  import javax.servlet.ServletResponse;
31  import javax.servlet.http.HttpServletRequest;
32  import javax.servlet.http.HttpServletResponse;
33  
34  import org.codehaus.plexus.util.Base64;
35  
36  /**
37   *
38   */
39  public class ProxyAuthenticationFilter
40      implements Filter
41  {
42  
43      private final String username;
44  
45      private final String password;
46  
47      public ProxyAuthenticationFilter( final String username, final String password )
48      {
49          this.username = username;
50          this.password = password;
51      }
52  
53      public void destroy()
54      {
55      }
56  
57      public void doFilter( final ServletRequest req, final ServletResponse resp, final FilterChain chain )
58          throws IOException, ServletException
59      {
60          HttpServletRequest request = (HttpServletRequest) req;
61          HttpServletResponse response = (HttpServletResponse) resp;
62  
63          String header = request.getHeader( "Proxy-Authorization" );
64          if ( header == null )
65          {
66              response.setStatus( HttpServletResponse.SC_PROXY_AUTHENTICATION_REQUIRED );
67              response.addHeader( "Proxy-Authenticate", "Basic realm=\"Squid proxy-caching web server\"" );
68              return;
69          }
70          else
71          {
72              String data = header.substring( "BASIC ".length() );
73              data = new String( Base64.decodeBase64( data.getBytes( StandardCharsets.US_ASCII ) ) );
74              String[] creds = data.split( ":" );
75  
76              if ( !creds[0].equals( username ) || !creds[1].equals( password ) )
77              {
78                  response.sendError( HttpServletResponse.SC_UNAUTHORIZED );
79              }
80          }
81  
82          chain.doFilter( req, resp );
83      }
84  
85      public void init( final FilterConfig filterConfig )
86          throws ServletException
87      {
88      }
89  
90  }