1 package org
.argeo
.osgi
.useradmin
;
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
.naming
.DnsBrowser
;
17 import org
.argeo
.util
.naming
.LdapAttrs
;
19 /** Free IPA specific conventions. */
20 public class IpaUtils
{
21 public final static String IPA_USER_BASE
= "cn=users,cn=accounts";
22 public final static String IPA_GROUP_BASE
= "cn=groups,cn=accounts";
23 public final static String IPA_ROLE_BASE
= "cn=roles,cn=accounts";
24 public final static String IPA_SERVICE_BASE
= "cn=services,cn=accounts";
26 private final static String KRB_PRINCIPAL_NAME
= LdapAttrs
.krbPrincipalName
.name().toLowerCase();
28 public final static String IPA_USER_DIRECTORY_CONFIG
= UserAdminConf
.userBase
+ "=" + IPA_USER_BASE
+ "&"
29 + UserAdminConf
.groupBase
+ "=" + IPA_GROUP_BASE
+ "&" + UserAdminConf
.readOnly
+ "=true";
32 static String
domainToUserDirectoryConfigPath(String realm
) {
33 return domainToBaseDn(realm
) + "?" + IPA_USER_DIRECTORY_CONFIG
+ "&" + UserAdminConf
.realm
.name() + "=" + realm
;
36 public static void addIpaConfig(String realm
, Dictionary
<String
, Object
> properties
) {
37 properties
.put(UserAdminConf
.baseDn
.name(), domainToBaseDn(realm
));
38 properties
.put(UserAdminConf
.realm
.name(), realm
);
39 properties
.put(UserAdminConf
.userBase
.name(), IPA_USER_BASE
);
40 properties
.put(UserAdminConf
.groupBase
.name(), IPA_GROUP_BASE
);
41 properties
.put(UserAdminConf
.systemRoleBase
.name(), IPA_ROLE_BASE
);
42 properties
.put(UserAdminConf
.readOnly
.name(), Boolean
.TRUE
.toString());
45 public static String
domainToBaseDn(String domain
) {
46 String
[] dcs
= domain
.split("\\.");
47 StringBuilder sb
= new StringBuilder();
48 for (int i
= 0; i
< dcs
.length
; i
++) {
52 sb
.append(LdapAttrs
.dc
.name()).append('=').append(dc
.toLowerCase());
57 public static LdapName
kerberosToDn(String kerberosName
) {
58 String
[] kname
= kerberosName
.split("@");
59 String username
= kname
[0];
60 String baseDn
= domainToBaseDn(kname
[1]);
62 if (!username
.contains("/"))
63 dn
= LdapAttrs
.uid
+ "=" + username
+ "," + IPA_USER_BASE
+ "," + baseDn
;
65 dn
= KRB_PRINCIPAL_NAME
+ "=" + kerberosName
+ "," + IPA_SERVICE_BASE
+ "," + baseDn
;
67 return new LdapName(dn
);
68 } catch (InvalidNameException e
) {
69 throw new IllegalArgumentException("Badly formatted name for " + kerberosName
+ ": " + dn
);
77 public static String
kerberosDomainFromDns() {
78 String kerberosDomain
;
79 try (DnsBrowser dnsBrowser
= new DnsBrowser()) {
80 InetAddress localhost
= InetAddress
.getLocalHost();
81 String hostname
= localhost
.getHostName();
82 String dnsZone
= hostname
.substring(hostname
.indexOf('.') + 1);
83 kerberosDomain
= dnsBrowser
.getRecord("_kerberos." + dnsZone
, "TXT");
84 return kerberosDomain
;
85 } catch (Exception e
) {
86 throw new UserDirectoryException("Cannot determine Kerberos domain from DNS", e
);
91 public static Dictionary
<String
, Object
> convertIpaUri(URI uri
) {
92 String path
= uri
.getPath();
94 if (path
== null || path
.length() <= 1) {
95 kerberosRealm
= kerberosDomainFromDns();
97 kerberosRealm
= path
.substring(1);
100 if (kerberosRealm
== null)
101 throw new UserDirectoryException("No Kerberos domain available for " + uri
);
102 // TODO intergrate CA certificate in truststore
103 // String schemeToUse = SCHEME_LDAPS;
104 String schemeToUse
= UserAdminConf
.SCHEME_LDAP
;
105 List
<String
> ldapHosts
;
106 String ldapHostsStr
= uri
.getHost();
107 if (ldapHostsStr
== null || ldapHostsStr
.trim().equals("")) {
108 try (DnsBrowser dnsBrowser
= new DnsBrowser()) {
109 ldapHosts
= dnsBrowser
.getSrvRecordsAsHosts("_ldap._tcp." + kerberosRealm
.toLowerCase(),
110 schemeToUse
.equals(UserAdminConf
.SCHEME_LDAP
) ?
true : false);
111 if (ldapHosts
== null || ldapHosts
.size() == 0) {
112 throw new UserDirectoryException("Cannot configure LDAP for IPA " + uri
);
114 ldapHostsStr
= ldapHosts
.get(0);
116 } catch (NamingException
| IOException e
) {
117 throw new UserDirectoryException("cannot convert IPA uri " + uri
, e
);
120 ldapHosts
= new ArrayList
<>();
121 ldapHosts
.add(ldapHostsStr
);
124 StringBuilder uriStr
= new StringBuilder();
126 for (String host
: ldapHosts
) {
127 URI convertedUri
= new URI(schemeToUse
+ "://" + host
+ "/");
128 uriStr
.append(convertedUri
).append(' ');
130 } catch (URISyntaxException e
) {
131 throw new UserDirectoryException("cannot convert IPA uri " + uri
, e
);
134 Hashtable
<String
, Object
> res
= new Hashtable
<>();
135 res
.put(UserAdminConf
.uri
.name(), uriStr
.toString());
136 addIpaConfig(kerberosRealm
, res
);