xref: /unit/src/java/nginx/unit/websocket/BasicAuthenticator.java (revision 1157:7ae152bda303)
1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements.  See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License.  You may obtain a copy of the License at
8  *
9  *     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 nginx.unit.websocket;
18 
19 import java.nio.charset.Charset;
20 import java.nio.charset.StandardCharsets;
21 import java.util.Base64;
22 import java.util.Map;
23 
24 /**
25  * Authenticator supporting the BASIC auth method.
26  */
27 public class BasicAuthenticator extends Authenticator {
28 
29     public static final String schemeName = "basic";
30     public static final String charsetparam = "charset";
31 
32     @Override
getAuthorization(String requestUri, String WWWAuthenticate, Map<String, Object> userProperties)33     public String getAuthorization(String requestUri, String WWWAuthenticate,
34             Map<String, Object> userProperties) throws AuthenticationException {
35 
36         String userName = (String) userProperties.get(Constants.WS_AUTHENTICATION_USER_NAME);
37         String password = (String) userProperties.get(Constants.WS_AUTHENTICATION_PASSWORD);
38 
39         if (userName == null || password == null) {
40             throw new AuthenticationException(
41                     "Failed to perform Basic authentication due to  missing user/password");
42         }
43 
44         Map<String, String> wwwAuthenticate = parseWWWAuthenticateHeader(WWWAuthenticate);
45 
46         String userPass = userName + ":" + password;
47         Charset charset;
48 
49         if (wwwAuthenticate.get(charsetparam) != null
50                 && wwwAuthenticate.get(charsetparam).equalsIgnoreCase("UTF-8")) {
51             charset = StandardCharsets.UTF_8;
52         } else {
53             charset = StandardCharsets.ISO_8859_1;
54         }
55 
56         String base64 = Base64.getEncoder().encodeToString(userPass.getBytes(charset));
57 
58         return " Basic " + base64;
59     }
60 
61     @Override
getSchemeName()62     public String getSchemeName() {
63         return schemeName;
64     }
65 
66 }
67