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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* Copyright 2017 - 2022 Anton Tananaev (anton@traccar.org)
*
* Licensed 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.traccar.database;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.config.Config;
import org.traccar.config.Keys;
import org.traccar.model.User;
import java.util.Hashtable;
public class LdapProvider {
private static final Logger LOGGER = LoggerFactory.getLogger(LdapProvider.class);
private final String url;
private final String searchBase;
private final String idAttribute;
private final String nameAttribute;
private final String mailAttribute;
private final String searchFilter;
private final String adminFilter;
private final String serviceUser;
private final String servicePassword;
public LdapProvider(Config config) {
url = config.getString(Keys.LDAP_URL);
searchBase = config.getString(Keys.LDAP_BASE);
idAttribute = config.getString(Keys.LDAP_ID_ATTRIBUTE);
nameAttribute = config.getString(Keys.LDAP_NAME_ATTRIBUTE);
mailAttribute = config.getString(Keys.LDAP_MAIN_ATTRIBUTE);
if (config.hasKey(Keys.LDAP_SEARCH_FILTER)) {
searchFilter = config.getString(Keys.LDAP_SEARCH_FILTER);
} else {
searchFilter = "(" + idAttribute + "=:login)";
}
if (config.hasKey(Keys.LDAP_ADMIN_FILTER)) {
adminFilter = config.getString(Keys.LDAP_ADMIN_FILTER);
} else {
String adminGroup = config.getString(Keys.LDAP_ADMIN_GROUP);
if (adminGroup != null) {
adminFilter = "(&(" + idAttribute + "=:login)(memberOf=" + adminGroup + "))";
} else {
adminFilter = null;
}
}
serviceUser = config.getString(Keys.LDAP_USER);
servicePassword = config.getString(Keys.LDAP_PASSWORD);
}
private InitialDirContext auth(String accountName, String password) throws NamingException {
Hashtable<String, String> env = new Hashtable<>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, url);
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, accountName);
env.put(Context.SECURITY_CREDENTIALS, password);
return new InitialDirContext(env);
}
private boolean isAdmin(String accountName) {
if (this.adminFilter != null) {
try {
InitialDirContext context = initContext();
String searchString = adminFilter.replace(":login", encodeForLdap(accountName));
SearchControls searchControls = new SearchControls();
searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
NamingEnumeration<SearchResult> results = context.search(searchBase, searchString, searchControls);
if (results.hasMoreElements()) {
results.nextElement();
if (results.hasMoreElements()) {
LOGGER.warn("Matched multiple users for the accountName: " + accountName);
return false;
}
return true;
}
} catch (NamingException e) {
return false;
}
}
return false;
}
public InitialDirContext initContext() throws NamingException {
return auth(serviceUser, servicePassword);
}
private SearchResult lookupUser(String accountName) throws NamingException {
InitialDirContext context = initContext();
String searchString = searchFilter.replace(":login", encodeForLdap(accountName));
SearchControls searchControls = new SearchControls();
String[] attributeFilter = {idAttribute, nameAttribute, mailAttribute};
searchControls.setReturningAttributes(attributeFilter);
searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
NamingEnumeration<SearchResult> results = context.search(searchBase, searchString, searchControls);
SearchResult searchResult = null;
if (results.hasMoreElements()) {
searchResult = results.nextElement();
if (results.hasMoreElements()) {
LOGGER.warn("Matched multiple users for the accountName: " + accountName);
return null;
}
}
return searchResult;
}
public User getUser(String accountName) {
SearchResult ldapUser;
User user = new User();
try {
ldapUser = lookupUser(accountName);
if (ldapUser != null) {
Attribute attribute = ldapUser.getAttributes().get(idAttribute);
if (attribute != null) {
user.setLogin((String) attribute.get());
} else {
user.setLogin(accountName);
}
attribute = ldapUser.getAttributes().get(nameAttribute);
if (attribute != null) {
user.setName((String) attribute.get());
} else {
user.setName(accountName);
}
attribute = ldapUser.getAttributes().get(mailAttribute);
if (attribute != null) {
user.setEmail((String) attribute.get());
} else {
user.setEmail(accountName);
}
}
user.setAdministrator(isAdmin(accountName));
} catch (NamingException e) {
user.setLogin(accountName);
user.setName(accountName);
user.setEmail(accountName);
LOGGER.warn("User lookup error", e);
}
return user;
}
public boolean login(String username, String password) {
try {
SearchResult ldapUser = lookupUser(username);
if (ldapUser != null) {
auth(ldapUser.getNameInNamespace(), password).close();
return true;
}
} catch (NamingException e) {
return false;
}
return false;
}
public String encodeForLdap(String input) {
if (input == null) {
return null;
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < input.length(); i++) {
char c = input.charAt(i);
switch (c) {
case '\\' -> sb.append("\\5c");
case '*' -> sb.append("\\2a");
case '(' -> sb.append("\\28");
case ')' -> sb.append("\\29");
case '\0' -> sb.append("\\00");
default -> sb.append(c);
}
}
return sb.toString();
}
}
|
