1 package org
.argeo
.util
.directory
.ldap
;
3 import java
.io
.IOException
;
4 import java
.net
.InetAddress
;
6 import java
.net
.URISyntaxException
;
7 import java
.util
.ArrayList
;
8 import java
.util
.Dictionary
;
9 import java
.util
.Hashtable
;
10 import java
.util
.List
;
12 import javax
.naming
.InvalidNameException
;
13 import javax
.naming
.NamingException
;
14 import javax
.naming
.ldap
.LdapName
;
16 import org
.argeo
.util
.directory
.DirectoryConf
;
17 import org
.argeo
.util
.naming
.LdapAttrs
;
18 import org
.argeo
.util
.naming
.dns
.DnsBrowser
;
20 /** Free IPA specific conventions. */
21 public class IpaUtils
{
22 public final static String IPA_USER_BASE
= "cn=users,cn=accounts";
23 public final static String IPA_GROUP_BASE
= "cn=groups,cn=accounts";
24 public final static String IPA_ROLE_BASE
= "cn=roles,cn=accounts";
25 public final static String IPA_SERVICE_BASE
= "cn=services,cn=accounts";
27 private final static String KRB_PRINCIPAL_NAME
= LdapAttrs
.krbPrincipalName
.name().toLowerCase();
29 public final static String IPA_USER_DIRECTORY_CONFIG
= DirectoryConf
.userBase
+ "=" + IPA_USER_BASE
+ "&"
30 + DirectoryConf
.groupBase
+ "=" + IPA_GROUP_BASE
+ "&" + DirectoryConf
.readOnly
+ "=true";
33 static String
domainToUserDirectoryConfigPath(String realm
) {
34 return domainToBaseDn(realm
) + "?" + IPA_USER_DIRECTORY_CONFIG
+ "&" + DirectoryConf
.realm
.name() + "=" + realm
;
37 public static void addIpaConfig(String realm
, Dictionary
<String
, Object
> properties
) {
38 properties
.put(DirectoryConf
.baseDn
.name(), domainToBaseDn(realm
));
39 properties
.put(DirectoryConf
.realm
.name(), realm
);
40 properties
.put(DirectoryConf
.userBase
.name(), IPA_USER_BASE
);
41 properties
.put(DirectoryConf
.groupBase
.name(), IPA_GROUP_BASE
);
42 properties
.put(DirectoryConf
.systemRoleBase
.name(), IPA_ROLE_BASE
);
43 properties
.put(DirectoryConf
.readOnly
.name(), Boolean
.TRUE
.toString());
46 public static String
domainToBaseDn(String domain
) {
47 String
[] dcs
= domain
.split("\\.");
48 StringBuilder sb
= new StringBuilder();
49 for (int i
= 0; i
< dcs
.length
; i
++) {
53 sb
.append(LdapAttrs
.dc
.name()).append('=').append(dc
.toLowerCase());
58 public static LdapName
kerberosToDn(String kerberosName
) {
59 String
[] kname
= kerberosName
.split("@");
60 String username
= kname
[0];
61 String baseDn
= domainToBaseDn(kname
[1]);
63 if (!username
.contains("/"))
64 dn
= LdapAttrs
.uid
+ "=" + username
+ "," + IPA_USER_BASE
+ "," + baseDn
;
66 dn
= KRB_PRINCIPAL_NAME
+ "=" + kerberosName
+ "," + IPA_SERVICE_BASE
+ "," + baseDn
;
68 return new LdapName(dn
);
69 } catch (InvalidNameException e
) {
70 throw new IllegalArgumentException("Badly formatted name for " + kerberosName
+ ": " + dn
);
78 public static String
kerberosDomainFromDns() {
79 String kerberosDomain
;
80 try (DnsBrowser dnsBrowser
= new DnsBrowser()) {
81 InetAddress localhost
= InetAddress
.getLocalHost();
82 String hostname
= localhost
.getHostName();
83 String dnsZone
= hostname
.substring(hostname
.indexOf('.') + 1);
84 kerberosDomain
= dnsBrowser
.getRecord("_kerberos." + dnsZone
, "TXT");
85 return kerberosDomain
;
86 } catch (NamingException
| IOException e
) {
87 throw new IllegalStateException("Cannot determine Kerberos domain from DNS", e
);
92 public static Dictionary
<String
, Object
> convertIpaUri(URI uri
) {
93 String path
= uri
.getPath();
95 if (path
== null || path
.length() <= 1) {
96 kerberosRealm
= kerberosDomainFromDns();
98 kerberosRealm
= path
.substring(1);
101 if (kerberosRealm
== null)
102 throw new IllegalStateException("No Kerberos domain available for " + uri
);
103 // TODO intergrate CA certificate in truststore
104 // String schemeToUse = SCHEME_LDAPS;
105 String schemeToUse
= DirectoryConf
.SCHEME_LDAP
;
106 List
<String
> ldapHosts
;
107 String ldapHostsStr
= uri
.getHost();
108 if (ldapHostsStr
== null || ldapHostsStr
.trim().equals("")) {
109 try (DnsBrowser dnsBrowser
= new DnsBrowser()) {
110 ldapHosts
= dnsBrowser
.getSrvRecordsAsHosts("_ldap._tcp." + kerberosRealm
.toLowerCase(),
111 schemeToUse
.equals(DirectoryConf
.SCHEME_LDAP
) ?
true : false);
112 if (ldapHosts
== null || ldapHosts
.size() == 0) {
113 throw new IllegalStateException("Cannot configure LDAP for IPA " + uri
);
115 ldapHostsStr
= ldapHosts
.get(0);
117 } catch (NamingException
| IOException e
) {
118 throw new IllegalStateException("Cannot convert IPA uri " + uri
, e
);
121 ldapHosts
= new ArrayList
<>();
122 ldapHosts
.add(ldapHostsStr
);
125 StringBuilder uriStr
= new StringBuilder();
127 for (String host
: ldapHosts
) {
128 URI convertedUri
= new URI(schemeToUse
+ "://" + host
+ "/");
129 uriStr
.append(convertedUri
).append(' ');
131 } catch (URISyntaxException e
) {
132 throw new IllegalStateException("Cannot convert IPA uri " + uri
, e
);
135 Hashtable
<String
, Object
> res
= new Hashtable
<>();
136 res
.put(DirectoryConf
.uri
.name(), uriStr
.toString());
137 addIpaConfig(kerberosRealm
, res
);