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
|
/*
*
* 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.client.transport;
import org.ietf.jgss.GSSContext;
import org.ietf.jgss.GSSException;
import org.ietf.jgss.GSSManager;
import org.ietf.jgss.GSSName;
import org.ietf.jgss.Oid;
import org.apache.qpid.client.security.AMQCallbackHandler;
import org.apache.qpid.client.security.CallbackHandlerRegistry;
import org.apache.qpid.jms.ConnectionURL;
import org.apache.qpid.transport.ClientDelegate;
import org.apache.qpid.transport.Connection;
import org.apache.qpid.transport.ConnectionException;
import org.apache.qpid.transport.ConnectionOpenOk;
import org.apache.qpid.transport.ConnectionSettings;
import org.apache.qpid.transport.util.Logger;
import org.apache.qpid.util.Strings;
import javax.security.sasl.Sasl;
import javax.security.sasl.SaslClient;
import javax.security.sasl.SaslException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
*
*/
public class ClientConnectionDelegate extends ClientDelegate
{
private static final Logger LOGGER = Logger.get(ClientDelegate.class);
private static final String KRB5_OID_STR = "1.2.840.113554.1.2.2";
protected static final Oid KRB5_OID;
static
{
Oid oid;
try
{
oid = new Oid(KRB5_OID_STR);
}
catch (GSSException ignore)
{
oid = null;
}
KRB5_OID = oid;
}
private final ConnectionURL _connectionURL;
/**
* @param settings
* @param connectionURL
*/
public ClientConnectionDelegate(ConnectionSettings settings, ConnectionURL connectionURL)
{
super(settings);
this._connectionURL = connectionURL;
}
@Override
protected SaslClient createSaslClient(List<Object> brokerMechs) throws ConnectionException, SaslException
{
final String brokerMechanisms = Strings.join(" ", brokerMechs);
final String restrictionList = getConnectionSettings().getSaslMechs();
final String selectedMech = CallbackHandlerRegistry.getInstance().selectMechanism(brokerMechanisms, restrictionList);
if (selectedMech == null)
{
throw new ConnectionException("Client and broker have no SASL mechanisms in common." +
" Broker allows : " + brokerMechanisms +
" Client has : " + CallbackHandlerRegistry.getInstance().getMechanisms() +
" Client restricted itself to : " + (restrictionList != null ? restrictionList : "no restriction"));
}
Map<String,Object> saslProps = new HashMap<String,Object>();
if (getConnectionSettings().isUseSASLEncryption())
{
saslProps.put(Sasl.QOP, "auth-conf");
}
final AMQCallbackHandler handler = CallbackHandlerRegistry.getInstance().createCallbackHandler(selectedMech);
handler.initialise(_connectionURL);
final SaslClient sc = Sasl.createSaslClient(new String[] {selectedMech}, null, getConnectionSettings().getSaslProtocol(), getConnectionSettings().getSaslServerName(), saslProps, handler);
return sc;
}
@Override
public void connectionOpenOk(Connection conn, ConnectionOpenOk ok)
{
SaslClient sc = conn.getSaslClient();
if (sc != null)
{
if (sc.getMechanismName().equals("GSSAPI"))
{
String id = getKerberosUser();
if (id != null)
{
conn.setUserID(id);
}
}
else if (sc.getMechanismName().equals("EXTERNAL"))
{
if (conn.getSecurityLayer() != null)
{
conn.setUserID(conn.getSecurityLayer().getUserID());
}
}
}
super.connectionOpenOk(conn, ok);
}
private String getKerberosUser()
{
LOGGER.debug("Obtaining userID from kerberos");
String service = getConnectionSettings().getSaslProtocol() + "@" + getConnectionSettings().getSaslServerName();
GSSManager manager = GSSManager.getInstance();
try
{
GSSName acceptorName = manager.createName(service,
GSSName.NT_HOSTBASED_SERVICE, KRB5_OID);
GSSContext secCtx = manager.createContext(acceptorName,
KRB5_OID,
null,
GSSContext.INDEFINITE_LIFETIME);
secCtx.initSecContext(new byte[0], 0, 1);
if (secCtx.getSrcName() != null)
{
return secCtx.getSrcName().toString();
}
}
catch (GSSException e)
{
LOGGER.warn("Unable to retrieve userID from Kerberos due to error",e);
}
return null;
}
}
|
