1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.server.security.auth.rmi;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.Collections;
import javax.management.remote.JMXAuthenticator;
import javax.management.remote.JMXPrincipal;
import javax.security.auth.Subject;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.login.AccountNotFoundException;
import org.apache.qpid.server.security.auth.database.Base64MD5PasswordFilePrincipalDatabase;
import org.apache.qpid.server.security.auth.database.PlainPasswordFilePrincipalDatabase;
import org.apache.qpid.server.security.auth.database.PrincipalDatabase;
import org.apache.qpid.server.security.auth.sasl.UsernamePrincipal;
public class RMIPasswordAuthenticator implements JMXAuthenticator
{
static final String UNABLE_TO_LOOKUP = "The broker was unable to lookup the user details";
static final String SHOULD_BE_STRING_ARRAY = "User details should be String[]";
static final String SHOULD_HAVE_2_ELEMENTS = "User details should have 2 elements, username, password";
static final String SHOULD_BE_NON_NULL = "Supplied username and password should be non-null";
static final String INVALID_CREDENTIALS = "Invalid user details supplied";
static final String CREDENTIALS_REQUIRED = "User details are required. " +
"Please ensure you are using an up to date management console to connect.";
public static final String DEFAULT_ENCODING = "utf-8";
private PrincipalDatabase _db = null;
public RMIPasswordAuthenticator()
{
}
public void setPrincipalDatabase(PrincipalDatabase pd)
{
this._db = pd;
}
public Subject authenticate(Object credentials) throws SecurityException
{
// Verify that credential's are of type String[].
if (!(credentials instanceof String[]))
{
if (credentials == null)
{
throw new SecurityException(CREDENTIALS_REQUIRED);
}
else
{
throw new SecurityException(SHOULD_BE_STRING_ARRAY);
}
}
// Verify that required number of credential's.
final String[] userCredentials = (String[]) credentials;
if (userCredentials.length != 2)
{
throw new SecurityException(SHOULD_HAVE_2_ELEMENTS);
}
String username = (String) userCredentials[0];
String password = (String) userCredentials[1];
// Verify that all required credential's are actually present.
if (username == null || password == null)
{
throw new SecurityException(SHOULD_BE_NON_NULL);
}
boolean authenticated = false;
// Perform authentication
try
{
PasswordCallback pwCallback = new PasswordCallback("prompt",false);
UsernamePrincipal uname = new UsernamePrincipal(username);
if (_db instanceof Base64MD5PasswordFilePrincipalDatabase)
{
//retrieve the stored password for the given user
_db.setPassword(uname, pwCallback);
//compare the MD5Hash of the given password with the stored value
if (Arrays.equals(getMD5Hash(password), pwCallback.getPassword()))
{
authenticated = true;
}
}
else if (_db instanceof PlainPasswordFilePrincipalDatabase)
{
//retrieve the users stored password and compare with given value
_db.setPassword(uname, pwCallback);
if (password.equals(new String(pwCallback.getPassword())))
{
authenticated = true;
}
}
else
{
throw new SecurityException(UNABLE_TO_LOOKUP);
}
}
catch (AccountNotFoundException e)
{
throw new SecurityException(INVALID_CREDENTIALS);
}
catch (UnsupportedEncodingException e)
{
throw new SecurityException(UNABLE_TO_LOOKUP);
}
catch (NoSuchAlgorithmException e)
{
throw new SecurityException(UNABLE_TO_LOOKUP);
}
catch (IOException e)
{
throw new SecurityException(UNABLE_TO_LOOKUP);
}
if (authenticated)
{
//credential's check out, return the appropriate JAAS Subject
return new Subject(true,
Collections.singleton(new JMXPrincipal(username)),
Collections.EMPTY_SET,
Collections.EMPTY_SET);
}
else
{
throw new SecurityException(INVALID_CREDENTIALS);
}
}
public static char[] getMD5Hash(String text) throws NoSuchAlgorithmException, UnsupportedEncodingException
{
byte[] data = text.getBytes(DEFAULT_ENCODING);
MessageDigest md = MessageDigest.getInstance("MD5");
for (byte b : data)
{
md.update(b);
}
byte[] digest = md.digest();
char[] hash = new char[digest.length ];
int index = 0;
for (byte b : digest)
{
hash[index++] = (char) b;
}
return hash;
}
}
|
