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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

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java/pkg/com/sun/security/sasl/ClientFactoryImpl.java+160−0
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1/*
2 * Copyright (c) 1999, 2006, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.security.sasl;
27
28import javax.security.sasl.*;
29import com.sun.security.sasl.util.PolicyUtils;
30
31import java.util.Map;
32import java.io.IOException;
33import javax.security.auth.callback.Callback;
34import javax.security.auth.callback.CallbackHandler;
35import javax.security.auth.callback.NameCallback;
36import javax.security.auth.callback.PasswordCallback;
37import javax.security.auth.callback.UnsupportedCallbackException;
38
39/**
40 * Client factory for EXTERNAL, CRAM-MD5, PLAIN.
41 *
42 * Requires the following callbacks to be satisfied by callback handler
43 * when using CRAM-MD5 or PLAIN.
44 * - NameCallback (to get username)
45 * - PasswordCallback (to get password)
46 *
47 * @author Rosanna Lee
48 */
49final public class ClientFactoryImpl implements SaslClientFactory {
50 private static final String myMechs[] = {
51 "EXTERNAL",
52 "CRAM-MD5",
53 "PLAIN",
54 };
55
56 private static final int mechPolicies[] = {
57 // %%% RL: Policies should actually depend on the external channel
58 PolicyUtils.NOPLAINTEXT|PolicyUtils.NOACTIVE|PolicyUtils.NODICTIONARY,
59 PolicyUtils.NOPLAINTEXT|PolicyUtils.NOANONYMOUS, // CRAM-MD5
60 PolicyUtils.NOANONYMOUS, // PLAIN
61 };
62
63 private static final int EXTERNAL = 0;
64 private static final int CRAMMD5 = 1;
65 private static final int PLAIN = 2;
66
67 public ClientFactoryImpl() {
68 }
69
70 public SaslClient createSaslClient(String[] mechs,
71 String authorizationId,
72 String protocol,
73 String serverName,
74 Map<String,?> props,
75 CallbackHandler cbh) throws SaslException {
76
77 for (int i = 0; i < mechs.length; i++) {
78 if (mechs[i].equals(myMechs[EXTERNAL])
79 && PolicyUtils.checkPolicy(mechPolicies[EXTERNAL], props)) {
80 return new ExternalClient(authorizationId);
81
82 } else if (mechs[i].equals(myMechs[CRAMMD5])
83 && PolicyUtils.checkPolicy(mechPolicies[CRAMMD5], props)) {
84
85 Object[] uinfo = getUserInfo("CRAM-MD5", authorizationId, cbh);
86
87 // Callee responsible for clearing bytepw
88 return new CramMD5Client((String) uinfo[0],
89 (byte []) uinfo[1]);
90
91 } else if (mechs[i].equals(myMechs[PLAIN])
92 && PolicyUtils.checkPolicy(mechPolicies[PLAIN], props)) {
93
94 Object[] uinfo = getUserInfo("PLAIN", authorizationId, cbh);
95
96 // Callee responsible for clearing bytepw
97 return new PlainClient(authorizationId,
98 (String) uinfo[0], (byte []) uinfo[1]);
99 }
100 }
101 return null;
102 };
103
104 public String[] getMechanismNames(Map<String,?> props) {
105 return PolicyUtils.filterMechs(myMechs, mechPolicies, props);
106 }
107
108 /**
109 * Gets the authentication id and password. The
110 * password is converted to bytes using UTF-8 and stored in bytepw.
111 * The authentication id is stored in authId.
112 *
113 * @param prefix The non-null prefix to use for the prompt (e.g., mechanism
114 * name)
115 * @param authorizationId The possibly null authorization id. This is used
116 * as a default for the NameCallback. If null, it is not used in prompt.
117 * @param cbh The non-null callback handler to use.
118 * @return an {authid, passwd} pair
119 */
120 private Object[] getUserInfo(String prefix, String authorizationId,
121 CallbackHandler cbh) throws SaslException {
122 if (cbh == null) {
123 throw new SaslException(
124 "Callback handler to get username/password required");
125 }
126 try {
127 String userPrompt = prefix + " authentication id: ";
128 String passwdPrompt = prefix + " password: ";
129
130 NameCallback ncb = authorizationId == null?
131 new NameCallback(userPrompt) :
132 new NameCallback(userPrompt, authorizationId);
133
134 PasswordCallback pcb = new PasswordCallback(passwdPrompt, false);
135
136 cbh.handle(new Callback[]{ncb,pcb});
137
138 char[] pw = pcb.getPassword();
139
140 byte[] bytepw;
141 String authId;
142
143 if (pw != null) {
144 bytepw = new String(pw).getBytes("UTF8");
145 pcb.clearPassword();
146 } else {
147 bytepw = null;
148 }
149
150 authId = ncb.getName();
151
152 return new Object[]{authId, bytepw};
153
154 } catch (IOException e) {
155 throw new SaslException("Cannot get password", e);
156 } catch (UnsupportedCallbackException e) {
157 throw new SaslException("Cannot get userid/password", e);
158 }
159 }
160}