LDAP Auth for Wicket

LDAP Auth for Wicket - java

I'm trying to get an LDAP Login Page working with Wicket.
I have an working LDAP Class which responds with a true / false statement if the given user credentials were confirmed by the LDAP Server.
package Tools;
import javax.naming.*;
import javax.naming.directory.*;
import java.io.FileNotFoundException;
import java.util.Hashtable;
public class LDAP {
boolean LDAP_ENABLED;
String LDAPBaseDirectory;
String LDAP_SERVER_ADDRESS;
String LDAP_SERVER_PORT;
String LDAP_USER_DOMAIN;
String LDAP_DN;
String LDAP_StandardUserName;
String LDAP_StandardUserPassword;
public LDAP(){ //depends on Config Class
//Import settings from Config
try{
Config config = new Config();
if(config.getProperty_seLDAP_ENABLED()){
this.LDAP_ENABLED = true;
}else{
this.LDAP_ENABLED = false;
}
if(this.LDAP_ENABLED){
this.LDAPBaseDirectory = config.getProperty_seLDAP_BASE_DIRECTORY();
this.LDAP_SERVER_ADDRESS = config.getProperty_seLDAP_SERVER_ADDRESS();
this.LDAP_SERVER_PORT = config.getProperty_seLDAP_SERVER_PORT();
this.LDAP_USER_DOMAIN = config.getProperty_seLDAP_USER_DOMAIN();
this.LDAP_DN = config.getProperty_seLDAP_DN();
this.LDAP_StandardUserName = config.getProperty_seLDAP_StandardUserName();
this.LDAP_StandardUserPassword = config.getProperty_seLDAP_StandardUserPassword();
}
} catch (FileNotFoundException e){
//todo
}
}
public boolean authentify(String userName, String userPassword){
System.out.println(userPassword);
//LDAP responses with "true" if password == null
if(userPassword.equals("")){
return false;
}
/**
* TODO
* Add availability check for LDAP Server
*
*/
try
{
System.out.println("Trying LDAP");
// Set up the environment for creating the initial context
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
String ldapURL = "ldap://" + this.LDAP_SERVER_ADDRESS + ":" +this.LDAP_SERVER_PORT;
System.out.println("URL: "+ ldapURL);
env.put(Context.PROVIDER_URL, ldapURL);
//
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, this.LDAP_DN +"\\"+ userName ); //"domain\\user");
System.out.println("Principal: "+ this.LDAP_DN +"\\"+ userName ); //DEBUG
env.put(Context.SECURITY_CREDENTIALS, userPassword);
System.out.println("Password: "+ userPassword ); //DEBUG
// Create the initial context
DirContext ctx = new InitialDirContext(env);
boolean result = (ctx != null);
// if(ctx != null)
ctx.close();
System.out.println("Result: " + result);
// return result;
if(result){
return true;
}else{
return false;
}
}
catch (Exception e)
{
System.out.println(e.getStackTrace());
e.printStackTrace();
return false;
}
}
}
The above class works pretty fine when used f.e. via console.
Next step was creating a pretty simple login page with wicket:
package haw.Ausleihe;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.PasswordTextField;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.Model;
import org.hibernate.Session;
import Tools.LDAP;
import Database.HibernateHelper;
import Database.Entities.User;
public class Login extends WebPage {
private static final long serialVersionUID = 1L;
public Login(final PageParameters parameters) {
super(parameters);
final TextField<String> hawKennung = new TextField<String>("hawKennung",
Model.of(""));
hawKennung.setRequired(true);
hawKennung.add(new UserValidator());
final PasswordTextField passwort = new PasswordTextField("passwort", Model.of(""));
passwort.setRequired(true);
Form<?> login = new Form<Void> ("login")
{
#Override
protected void onSubmit() {
//HibernateHelper hibernate = new HibernateHelper();
final String usernameValue = hawKennung.getModelObject();
final String passwordValue = passwort.getModelObject();
//hibernate.addUser(usernameValue, passwordValue, "", "", "");
// User tmpUser = hibernate.getUser("abb123");
// System.out.println("Database Entry: " + tmpUser.getKennung() + " ; " + tmpUser.getPassword());
System.out.println(usernameValue);
System.out.println(passwordValue);
System.out.println("NOW TESTING LDAP");
LDAP ldap = new LDAP();
if(ldap.authentify(usernameValue, passwordValue)){
System.out.println("Success");
}else{
System.out.println("Fail");
}
setResponsePage(HomePage.class);
}
};
add(login);
login.add(hawKennung);
login.add(passwort);
}
}
Now to my problem...
So this should be pretty simple ... enter username/password click the submit button and ... litterally nothing happens. No System.out.println is shown and i seems as if the code just freezes (debug informations from the LDAP class aren't shown as well)
Do you guys have an idea what i have done wrong?
Greetings,
Dwarfex

Try overriding the onError() function of your form an see if you get there, I suspect that your validator returns an error and you do not get into the onSubmit() because of that.
Than I would suggest to use a proper Model for your input fields. Try adding 2 String properties to your Page (hawKennung and password) and getter/setters for them.
Create the input fields like this:
TextField<String> hawKennung =
new TextField<>("hawKennung", new PropertyModel(Login.this, "hawKennung");
and just use the property hawKennung in the onSubmit(). Wicket will take care of assigning the value.

Related

Java code wrote for AD account creation but LDAP exception occurred

Java code wrote for AD account creation but LDAP exception occurred such as LDAP security context error and some times LdapErr: DSID-0C0910B5, comment: Error in attribute conversion operation exemption occurred.
then it connects to my domain: success
Status : false
javax.naming.directory.NoSuchAttributeException: [LDAP: error code 16 - 00000057: LdapErr: DSID-0C0910B5, comment: Error in attribute conversion operation, data 0, v4563
Could you please help me to correct the issue. Following listed the class I wrote
package com.mycom.mysys.ActiveDirectory;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.BasicAttributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.ModificationItem;
import javax.naming.ldap.InitialLdapContext;
import javax.naming.ldap.LdapContext;
public class NewUser_Test {
private static final String DOMAIN_ROOT = "OU=Mycomname Bank,DC=TESTAD,DC=LOCAL";
private String userName, firstName, lastName, password, organisationUnit;
private LdapContext context;
private Hashtable hashtable;
public static void main(String[] args) {
try {
NewUser_Test tst = new NewUser_Test("ACMYCOM1494", "Athuru", "Liyanage", "peLa071it", "OU=Information Technology,OU=HO,OU=Users");
boolean b = tst.addUser();
System.out.println("Status : " + b);
} catch (Exception e) {
e.printStackTrace();
}
}
public NewUser_Test(String userName, String firstName, String lastName, String password, String organisationUnit) {
this.userName = userName;
this.firstName = firstName;
this.lastName = lastName;
this.password = password;
this.organisationUnit = organisationUnit;
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.SECURITY_AUTHENTICATION, "Simple");
env.put(Context.SECURITY_PRINCIPAL, "mysys" + "#TESTAD.LOCAL");
env.put(Context.SECURITY_CREDENTIALS, "FCMycom1982#it");
env.put(Context.PROVIDER_URL, "ldap://10.0.8.1:389");
try {
this.context = new InitialLdapContext(env, null);
System.out.println("connect to my domain: success");
} catch (NamingException e) {
System.err.println("Problem creating object: ");
e.printStackTrace();
}
}
public boolean addUser() throws NamingException {
// Create a container set of attributes
Attributes container = new BasicAttributes();
// Create the objectclass to add
Attribute objClasses = new BasicAttribute("user");
objClasses.add("top");
objClasses.add("person");
objClasses.add("organizationalPerson");
objClasses.add("user");
// Assign the username, first name, and last name
String cnValue = new StringBuffer(firstName).append(" ").append(lastName).toString();
Attribute cn = new BasicAttribute("cn", cnValue);
Attribute sAMAccountName = new BasicAttribute("sAMAccountName", userName);
Attribute principalName = new BasicAttribute("userPrincipalName", userName + "#TESTAD.LOCAL");
Attribute givenName = new BasicAttribute("givenName", firstName);
Attribute sn = new BasicAttribute("sn", lastName);
Attribute uid = new BasicAttribute("uid", userName);
Attribute displayName = new BasicAttribute("displayName", "Athuru Liyanage");
//User Account Options lmaccess.h
int UF_ACCOUNTDISABLE = 0x0002;
int UF_PASSWD_NOTREQD = 0x0020;
int UF_PASSWD_CANT_CHANGE = 0x0040;
int UF_NORMAL_ACCOUNT = 0x0200;
int UF_DONT_EXPIRE_PASSWD = 0x10000;
int UF_PASSWORD_EXPIRED = 0x800000;
int UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION = 0x1000000;
Attribute accountOption = new BasicAttribute("userAccountControl", Integer.toString(UF_NORMAL_ACCOUNT + UF_PASSWD_NOTREQD + UF_PASSWORD_EXPIRED + UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION));
// Add password
Attribute userPassword = new BasicAttribute("userpassword", password);
Attribute email = new BasicAttribute("mail", "AthuruL#TESTAD.LOCAL");
Attribute designation = new BasicAttribute("title", "Junior Executive - Marketing / Credit");
// Add these to the container
container.put(objClasses);
container.put(sAMAccountName);
container.put(principalName);
container.put(cn);
container.put(sn);
container.put(givenName);
container.put(uid);
container.put(accountOption);
container.put(userPassword);
container.put(displayName);
container.put(email);
container.put(designation);
// Create the entry
try {
context.createSubcontext(getUserDN(cnValue, organisationUnit), container);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
private static String getUserDN(String aUsername, String aOU) {
return "cn=" + aUsername + ",ou=" + aOU + "," + DOMAIN_ROOT;
}
}

There are two red flags I see. First:
Attribute accountOption = new BasicAttribute("userAccountControl", Integer.toString(UF_NORMAL_ACCOUNT + UF_PASSWD_NOTREQD + UF_PASSWORD_EXPIRED + UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION));
The userAccountControl attribute is a number, but you are assigning a string to it. You don't need to use Integer.toString here. You are also assigning UF_PASSWD_NOTREQD to tell it that the account does not require a password, but then you're assigning a password?
That brings us to the password:
Attribute userPassword = new BasicAttribute("userpassword", password);
Setting the password is a strange thing in AD. Technically setting the userPassword attribute can work, if your domain is setup to allow it. If so, that code should work. If not, then you'll have to use the actual password attribute, unicodePwd, which is a little more difficult to set because it requires a very specific format: it must enclosed in quotes and encoded in UTF-16. There is an example here of how to do that. For example:
String quotedPassword = "\"" + password + "\"";
char unicodePwd[] = quotedPassword.toCharArray();
byte pwdArray[] = new byte[unicodePwd.length * 2];
for (int i = 0; i < unicodePwd.length; i++)
{
pwdArray[i * 2 + 1] = (byte) (unicodePwd[i] >>> 8);
pwdArray[i * 2 + 0] = (byte) (unicodePwd[i] & 0xff);
}
Then you can set unicodePwd to pwdArray:
Attribute userPassword = new BasicAttribute("unicodePwd", pwdArray);

LDAP: How to retrieve user data from multiple AD groups in JAVA

I am using one java program to retrieve user information from active directory. The program is working but it is passing data from one group only (search filter is defined as a string
String searchFilter ="CN=CostCentre_1041";)
How I can pass multiple groups in a program.
I have tried using array but not able to define it properly.
package Test.ad;
import java.util.Hashtable;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
public class GetUsersFrormLDAPGroup {
static String ldapSearchBase = "DC=test,DC=edu,DC=com";
private static DirContext ctx = null;
private static DirContext getActiveDirectoryContext() throws Exception {
final Properties properties = new Properties();
properties.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
properties.put(Context.PROVIDER_URL, "ldap://testad:3268");
properties.put(Context.SECURITY_AUTHENTICATION, "simple");
properties.put(Context.SECURITY_PRINCIPAL, "admin");
properties.put(Context.SECURITY_CREDENTIALS, "test");
return new InitialDirContext(properties);
}
public void getGroupUsers(String searchBase, String searchFilter, String returnedAttrs[], int maxResults) {
Hashtable userEntries = null;
String member = "";
try {
SearchControls searchCtls = new SearchControls();
searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);
searchCtls.setReturningAttributes(returnedAttrs);
ctx = getActiveDirectoryContext();
try {
System.out.println("Search Base: " + searchBase);
System.out.println("Search Filter: " + searchFilter);
NamingEnumeration users = ctx.search(searchBase, searchFilter, searchCtls);
if (users.hasMoreElements() == false) {
System.out.println("Not find any object with this filter " + searchFilter + " and searchBase " + searchBase);
}
int k = 0;
String attValue = "";
userEntries = new Hashtable();
while (users.hasMoreElements()) {
if (k >= maxResults)
break;
SearchResult sr = (SearchResult) users.next();
Attributes attrs = sr.getAttributes();
if (attrs.size() == 0) {
System.out.println("Could not find attribute " + returnedAttrs[0] + " for this object.");
} else {
try {
for (NamingEnumeration ae = attrs.getAll(); ae.hasMore(); ) {
Attribute attr = (Attribute) ae.next();
String id = attr.getID();
for (NamingEnumeration e = attr.getAll(); e.hasMore(); ) {
attValue = (String) e.next();
if (id.equalsIgnoreCase("member"))
member = attValue;
{
System.out.println("member :" + member);
}
//{
//System.out.println("empty");
// }
}
}
} catch (NamingException e) {
System.out.println("Problem listing membership:" + e);
}
}
k++;
}
} catch (NamingException e) {
System.out.println("Problem searching directory: " + e);
}
ctx.close();
ctx = null;
} catch (Exception namEx) {
System.out.println("Exception while fetching the users from LDAP::" + namEx);
}
}
public static void main(String args[]) throws Exception {
GetUsersFrormLDAPGroup gug = new GetUsersFrormLDAPGroup();
String returnedAttrs[] = {"cn", "member", "name"};
String searchFilter = "CN=CostCentre_1041";
gug.getGroupUsers(ldapSearchBase, searchFilter, returnedAttrs, Integer.parseInt("2000"));
}
}

You can either:
Call getGroupUsers() a second time with a different searchFilter to get the results for a different group:
String searchFilter = "CN=CostCentre_1041";
gug.getGroupUsers(ldapSearchBase, searchFilter, returnedAttrs, Integer.parseInt("2000"));
searchFilter = "CN=SNOW - EA DEV INTG";
gug.getGroupUsers(ldapSearchBase, searchFilter, returnedAttrs, Integer.parseInt("2000"));
Change your searchFilter to return both groups.
String searchFilter = "(|(CN=CostCentre_1041)(CN=SNOW - EA DEV INTG))";
gug.getGroupUsers(ldapSearchBase, searchFilter, returnedAttrs, Integer.parseInt("2000"));

Getting UnSupported Protocol : rmi/t3 in PL/sql on weblogic user creation using JMX

I have developed java code using pl/sql for weblogic user creation.
The code is:
CREATE OR REPLACE AND COMPILE JAVA SOURCE NAMED "NewUserCreation31" AS
import javax.management.ObjectName;
import javax.management.modelmbean.ModelMBeanInfo;
import java.util.Locale;
import java.util.Hashtable;
import javax.naming.Context;
import javax.management.MBeanServerConnection;
import javax.management.remote.JMXServiceURL;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.ResultSet;
public class NewUserCreation31
{
private static ObjectName defaultAuthenticator;
private static String authenticatorName="DefaultAuthenticator";
public static String username=null;
public static String password=null;
public static String user_role=null;
public static String retVal="exception";
public static String createWeblogicUser()
{
try {
Hashtable<String, String> env = new Hashtable<String, String>();
// Connection conn = null;
String url1 = "jdbc:oracle:thin:#191.169.151.13:1521:SER140";
String driver = "oracle.jdbc.driver.OracleDriver";
String userNm = "user1";
String psword = "password1";
Statement stmt=null;
String query=" select user_id,enc_dec.decrypt(passwd) pwd,user_priv from user_data";
try
{
retVal= "return 1";
username="uname1";
password="pwd123";
user_role="A";
retVal= "return all";
String user_grp =
(user_role.equals("A")) ? "A" :
(user_role.equals("P")) ? "P" :
(user_role.equals("PA")) ? "PA" :
(user_role.equals("R")) ? "R" :
(user_role.equals("RA")) ? "RA" :
(user_role.equals("RP")) ? "RP" : (user_role.equals("RPA")) ? "RPA" : "U";
retVal= "return user_role";
env.put(Context.SECURITY_PRINCIPAL, "weblogic");
env.put(Context.SECURITY_CREDENTIALS, "weblogic123");
retVal= "return env";
String hostname ="192.168.161.17";
retVal= hostname;
int port = Integer.parseInt("8001");
retVal= "port";
String protocol = "rmi";
retVal= protocol;
String url = new String("/jndi/weblogic.management.mbeanservers.runtime");
retVal= url;
JMXServiceURL serviceURL = new JMXServiceURL(protocol, hostname, port, url);
retVal= serviceURL.toString();
JMXConnector connector = JMXConnectorFactory.connect(serviceURL, env);
retVal="connector";
MBeanServerConnection connection = connector.getMBeanServerConnection();
retVal="MBeanServerConnection";
ObjectName userEditor = null;
ObjectName mBeanTypeService =
new ObjectName("com.bea:Name=MBeanTypeService,Type=weblogic.management.mbeanservers.MBeanTypeService");
retVal="mBeanTypeService";
ObjectName rs1 =
new ObjectName("com.bea:Name=RuntimeService,Type=weblogic.management.mbeanservers.runtime.RuntimeServiceMBean");
retVal="rs1";
ObjectName domainMBean = (ObjectName) connection.getAttribute(rs1, "DomainConfiguration");
retVal="domainMBean";
ObjectName securityConfig = (ObjectName) connection.getAttribute(domainMBean, "SecurityConfiguration");
retVal="securityConfig";
ObjectName defaultRealm = (ObjectName) connection.getAttribute(securityConfig, "DefaultRealm");
retVal="defaultRealm";
ObjectName[] authProviders =
(ObjectName[]) connection.getAttribute(defaultRealm, "AuthenticationProviders");
retVal="authProviders";
for (ObjectName providerName : authProviders) {
if (userEditor == null) {
ModelMBeanInfo info = (ModelMBeanInfo) connection.getMBeanInfo(providerName);
String className = (String) info.getMBeanDescriptor().getFieldValue("interfaceClassName");
System.out.println("className is: " + className);
if (className != null) {
String[] mba = (String[]) connection.invoke(mBeanTypeService, "getSubtypes", new Object[] {
"weblogic.management.security.authentication.UserEditorMBean" }, new String[] {
"java.lang.String" });
for (String mb : mba) {
System.out.println("Model Bean is: " + mb);
if (className.equals(mb)) {
System.out.println("Found a match for the model bean and class name!");
userEditor = providerName;
}
}
}
}
}
if (userEditor == null)
throw new RuntimeException("Could not retrieve user editor");
try {
for (int i = 0; i < authProviders.length; i++) {
String name =
(String)connection.getAttribute(authProviders[i],
"Name");
System.out.println("name " + name);
if (name.equals(authenticatorName))
defaultAuthenticator = authProviders[i];
}
boolean userExists =
((Boolean)connection.invoke(defaultAuthenticator, "userExists",
new Object[] { username },
new String[] { "java.lang.String" })).booleanValue();
System.out.println("userExists" + userExists);
if(userExists)
{
return "User Already exists";
}
else if(!(userExists))
{
connection.invoke(userEditor, "createUser", new Object[] {
username, password, "User created by LPM admin." }, new String[] {
"java.lang.String", "java.lang.String", "java.lang.String"
});
connection.invoke(userEditor, "addMemberToGroup", new Object[] { user_grp, username }, new String[] {
"java.lang.String", "java.lang.String"
});
connection.invoke(userEditor, "addMemberToGroup", new Object[] { "Administrators", username }, new String[] {
"java.lang.String", "java.lang.String"
});
System.out.println("User created successfully");
}
connector.close();
}
catch (Exception ex) {
ex.printStackTrace();
return "Error";
}
// }
// conn.close();
System.out.println("Disconnected from database");
}
catch (Exception e)
{
e.printStackTrace();
}
}
catch(Exception e3)
{
e3.printStackTrace();
return "Error";
}
return retVal;
}
};
/
Here I will get exception at line
JMXConnectorFactory.connect() as Unsupported protocol : rmi.
If I will change the protocol to t3, then It will through
Unsupported protocol : t3
I have ran the code through java directly. It is working. But whenever I will try to call it through pl/sql I will get the mentioned exception.
Please suggest me on this. Is there any other way to create a weblogic users.
I need to create weblogic users from one of the table resided in my database : user_data.
Is it possible to create weblogic users through PL/SQL?. Can I make my java class to be invoked from weblogic server on some interval? Please suggest on this.

List Ldap servers in the domain and authenticate

How to get List of LDAP servers given a domain name (using java + acitvedirectory) , and authenticate it based on username and password ?

Here are the steps to do it
GET Server List
Hit DNS server to get SRV records
Sort SRV records
Filter server record based on regexp pattern
Construct LDAP urls based on if we need ssl or not. Note that srv record can return only one port so dont rely on port returned from srv record. See srv record RFC
Authentication
iterate through list of servers
Construct Hashtable with ldap environments. note that need to append domain name with username separated by \, and add ldap URL to it
try to create InitialDirContext
success : close context and return
failure1 : if naming exception is AuthenticationException and contains messge "[LDAP: error code 49" translate and throw a readable exception ! see error code mapping
failure2 : if not failure1 continue with next ldap URL
And Here is the full fledged working code
If you are using spring use following conf to invoke init method
<bean
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetClass">
<value>org.bhate.ldap.LdapUtil</value>
</property>
<property name="targetMethod" value="init" />
<property name="arguments">
<list>
<value>${ldap.dnsServer}</value>
<value>${ldap.domainName}</value>
<value>${ldap.filter.regexp}</value>
<value>${ldap.ssl}</value>
</list>
</property>
And Following properties
ldap.dnsServer=uk.mydomain.com
ldap.domainName=DOMAINNAME
ldap.filter.regexp=serv10.*|server.*
ldap.ssl=true
else call init during startup
LdapUtil.init("uk.mydomain.com", "DOMAINNAME", "serv10.*|server.*",true);
LdapUtil.java
package org.bhate.ldap;
import java.util.Collection;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.TreeSet;
import java.util.regex.Pattern;
import javax.naming.AuthenticationException;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.spi.NamingManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.NestedExceptionUtils;
import org.springframework.security.BadCredentialsException;
public class LdapUtil {
private static final Logger LOGGER = LoggerFactory
.getLogger(LdapUtil.class);
#SuppressWarnings("serial")
final static Map<String, String> errorCodesMap = new HashMap<String, String>() {
{
put("525", "user not found");
put("52e", "invalid credentials");
put("530", "not permitted to logon at this time");
put("531", "not permitted to logon at this workstation");
put("532", "password expired");
put("533", "account disabled");
put("701", "account expired");
put("773", "user must reset password");
put("775", "user account locked");
}
};
private static Collection<String> ldapServers;
private static String domainName;
private static Pattern PATTERN;
public static DirContext getDirContext(String url, String domainName,
String userName, String password) throws NamingException {
Hashtable<String, Object> env = getEnv(url, domainName, userName,
password);
return new InitialDirContext(env);
}
public static Collection<String> getLdapServers(String ldapDomain,
boolean useSsl) throws NamingException {
Collection<String> serverRecords = getSRVRecords(ldapDomain);
serverRecords = reOrder(serverRecords);
Collection<String> serverNames = new LinkedHashSet<String>();
String protocol = "ldap" + (useSsl ? 's' : "");
for (String s : serverRecords) {
String hostName = s.substring(s.lastIndexOf(' ') + 1,
s.length() - 1);
serverNames.add(protocol + "://" + hostName);
}
return serverNames;
}
private static Collection<String> reOrder(Collection<String> serverRecords) {
return serverRecords;
}
private static Collection<String> getSRVRecords(String ldapDomain)
throws NamingException {
DirContext context = (DirContext) NamingManager.getURLContext("dns",
new Hashtable<String, Object>());
String ldapDNSUrl = "dns:///_ldap._tcp." + ldapDomain;
String[] attrIds = { "SRV" };
Attributes attributes = context.getAttributes(ldapDNSUrl, attrIds);
Attribute servers = attributes.get("SRV");
int L = servers.size();
Collection<String> serverRecords = new TreeSet<String>();
for (int i = 0; i < L; i++) {
String s = (String) servers.get(i);
if (PATTERN.matcher(s).find())
serverRecords.add(s);
}
return serverRecords;
}
public static void authenticate(String userName, String password) {
String msg = "Unable authenticate user {} with {}";
for (String url : ldapServers) {
DirContext ctx = null;
try {
ctx = getDirContext(url, domainName, userName, password);
LOGGER
.info("Authenticated user {} on server {}", userName,
url);
return;
} catch (NamingException e) {
LOGGER.error(msg, userName, url);
String m = NestedExceptionUtils.buildMessage(e.getMessage(), e
.getCause());
LOGGER.error(m, e);
if (e instanceof AuthenticationException
&& e.getMessage().startsWith("[LDAP: error code 49"))
throwMeanigfulEx(userName, url, e);
} finally {
close(ctx);
}
}
LOGGER.error(msg, userName, "any available server");
throw new BadCredentialsException(
"Unable to authenticate : Please contact application support team");
}
public static void init(String dnsServerName, String domainName,
String serverFilter, boolean useSsl) {
PATTERN = Pattern.compile(serverFilter);
try {
LdapUtil.domainName=domainName;
ldapServers = getLdapServers(dnsServerName, useSsl);
if (LOGGER.isInfoEnabled()) {
LOGGER.info(
"LDAP servers available in domain {} to connect {}",
dnsServerName, ldapServers);
}
} catch (NamingException e) {
throw new RuntimeException("Unable retrieve ldapServers for "
+ dnsServerName, e);
}
}
private static void throwMeanigfulEx(String userName, String url,
NamingException e) {
String separator = ", data ";
String m = e.getMessage();
int strt = m.lastIndexOf(separator) + separator.length();
int end = m.lastIndexOf(", vece");
String code = m.substring(strt, end);
throw new BadCredentialsException("Unable to authenticate : "
+ errorCodesMap.get(code));
}
private static void close(DirContext ctx) {
if (ctx != null)
try {
ctx.close();
} catch (NamingException e) {
LOGGER.error("Unable to close context", e);
}
}
private static Hashtable<String, Object> getEnv(String url,
String domainName, String userName, String password) {
Hashtable<String, Object> env = new Hashtable<String, Object>();
env.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.REFERRAL, "follow");
env.put(Context.PROVIDER_URL, url);
env.put("com.sun.jndi.ldap.connect.timeout", "2000");
// env.put("com.sun.jndi.ldap.trace.ber", System.err);
// env.put("javax.net.ssl.trustStoreType", "JKS");
// env.put(Context.SECURITY_PROTOCOL, "ssl");
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, getPrincipal(domainName, userName));
env.put(Context.SECURITY_CREDENTIALS, password);
return env;
}
private static Object getPrincipal(String domainName, String userName) {
return domainName + "\\" + userName;
}
public static void main(String[] args) throws NamingException {
init("uk.mydomain.com", "DOMAINNAME", "serv10.*|server.*",true);
System.out.println(ldapServers.size());
System.out.println(ldapServers);
if (args.length == 2)
authenticate(args[0], args[1]);
}
//
// public static InitialLdapContext getLdapContext(String userName,
// String domainName, String password, String url)
// throws NamingException {
// Hashtable<String, Object> env = getEnv(url, domainName, userName,
// password);
// Control[] connCtls = new Control[] { new Control() {
// private static final long serialVersionUID = 1L;
//
// public byte[] getEncodedValue() {
// return null;
// }
//
// public String getID() {
// return "1.2.840.113556.1.4.1781";
// }
//
// public boolean isCritical() {
// return true;
// }
// } };
// return new InitialLdapContext(env, connCtls);
// }
}

Here is a snippet for looking up SRV records in Java, use it with the domain given by ShaMan (_ldap._tcp.dc._msdcs.your.domain.com).
private static final String[] SRV = new String[] { "SRV" };
public static Collection<InetSocketAddress> srv(String name)
throws NamingException
{
DirContext ctx = new IntialDirContext();
Attributes attrs = ctx.getAttributes("dns:/" + name, SRV);
if(attributes.get("SRV") == null)
{
return Collections.emptyList();
}
NamingEnumeration<?> e = attributes.get("SRV").getAll();
TreeMap<Integer, InetSocketAdress> result = new TreeMap<Integer, InetSocketAdress>();
while(e.hasMoreElements())
{
String line = (String) e.nextElement();
// The line is priority weight port host
String[] parts = line.split("\\s+");
int prio = Integer.parseInt(parts[0]);
int port = Integer.parseInt(parts[2]);
String host = parts[3];
result.put(prio, new InetSocketAddress(host, port));
}
return result.values();
}

You can get a list of LDAP servers for a given AD domain by reading the SRV records for that domain. The SRV record you need have value similar to this one _ldap._tcp.dc._msdcs.your.domain.com. This article should give you some more information: http://technet.microsoft.com/en-us/library/cc738991%28WS.10%29.aspx.
You can use JNDI to retrieve the DNS information and later to authenticate via LDAP. A nice tutorial can be found here: http://download.oracle.com/javase/jndi/tutorial/.

Java LDAP - Determine if user in a given group?

We logon users to Active Directory via LDAP using the Java LDAP API. We want to enhance our logon functionality to further check if the user is in a given AD group. Does anyone know how to do this?
Current code:
import javax.naming.*;
import javax.naming.ldap.*;
LdapContext ctx = null;
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.SECURITY_AUTHENTICATION,"simple");
env.put(Context.PROVIDER_URL, Config.get("ldap-url"));
try {
Control[] connCtls = new Control[] {new FastBindConnectionControl()};
ctx = new InitialLdapContext(env, connCtls);
ctx.addToEnvironment(Context.SECURITY_PRINCIPAL, "DOMAIN\\" + username);
ctx.addToEnvironment(Context.SECURITY_CREDENTIALS, password);
ctx.reconnect(connCtls);
/* TODO: Only return true if user is in group "ABC" */
return true; //User authenticated
} catch (Exception e) {
return false; //User could NOT be authenticated
} finally {
...
}
Update: See the solution below.

We solved this with the class below. Just call the authenticate method:
import java.text.MessageFormat;
import java.util.*;
import javax.naming.*;
import org.apache.log4j.Level;
public class LdapGroupAuthenticator {
public static final String DISTINGUISHED_NAME = "distinguishedName";
public static final String CN = "cn";
public static final String MEMBER = "member";
public static final String MEMBER_OF = "memberOf";
public static final String SEARCH_BY_SAM_ACCOUNT_NAME = "(SAMAccountName={0})";
public static final String SEARCH_GROUP_BY_GROUP_CN = "(&(objectCategory=group)(cn={0}))";
/*
* Prepares and returns CN that can be used for AD query
* e.g. Converts "CN=**Dev - Test Group" to "**Dev - Test Group"
* Converts CN=**Dev - Test Group,OU=Distribution Lists,DC=DOMAIN,DC=com to "**Dev - Test Group"
*/
public static String getCN(String cnName) {
if (cnName != null && cnName.toUpperCase().startsWith("CN=")) {
cnName = cnName.substring(3);
}
int position = cnName.indexOf(',');
if (position == -1) {
return cnName;
} else {
return cnName.substring(0, position);
}
}
public static boolean isSame(String target, String candidate) {
if (target != null && target.equalsIgnoreCase(candidate)) {
return true;
}
return false;
}
public static boolean authenticate(String domain, String username, String password) {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://1.2.3.4:389");
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, domain + "\\" + username);
env.put(Context.SECURITY_CREDENTIALS, password);
DirContext ctx = null;
String defaultSearchBase = "DC=DOMAIN,DC=com";
String groupDistinguishedName = "DN=CN=DLS-APP-MyAdmin-C,OU=DLS File Permissions,DC=DOMAIN,DC=com";
try {
ctx = new InitialDirContext(env);
// userName is SAMAccountName
SearchResult sr = executeSearchSingleResult(ctx, SearchControls.SUBTREE_SCOPE, defaultSearchBase,
MessageFormat.format( SEARCH_BY_SAM_ACCOUNT_NAME, new Object[] {username}),
new String[] {DISTINGUISHED_NAME, CN, MEMBER_OF}
);
String groupCN = getCN(groupDistinguishedName);
HashMap processedUserGroups = new HashMap();
HashMap unProcessedUserGroups = new HashMap();
// Look for and process memberOf
Attribute memberOf = sr.getAttributes().get(MEMBER_OF);
if (memberOf != null) {
for ( Enumeration e1 = memberOf.getAll() ; e1.hasMoreElements() ; ) {
String unprocessedGroupDN = e1.nextElement().toString();
String unprocessedGroupCN = getCN(unprocessedGroupDN);
// Quick check for direct membership
if (isSame (groupCN, unprocessedGroupCN) && isSame (groupDistinguishedName, unprocessedGroupDN)) {
Log.info(username + " is authorized.");
return true;
} else {
unProcessedUserGroups.put(unprocessedGroupDN, unprocessedGroupCN);
}
}
if (userMemberOf(ctx, defaultSearchBase, processedUserGroups, unProcessedUserGroups, groupCN, groupDistinguishedName)) {
Log.info(username + " is authorized.");
return true;
}
}
Log.info(username + " is NOT authorized.");
return false;
} catch (AuthenticationException e) {
Log.info(username + " is NOT authenticated");
return false;
} catch (NamingException e) {
throw new SystemException(e);
} finally {
if (ctx != null) {
try {
ctx.close();
} catch (NamingException e) {
throw new SystemException(e);
}
}
}
}
public static boolean userMemberOf(DirContext ctx, String searchBase, HashMap processedUserGroups, HashMap unProcessedUserGroups, String groupCN, String groupDistinguishedName) throws NamingException {
HashMap newUnProcessedGroups = new HashMap();
for (Iterator entry = unProcessedUserGroups.keySet().iterator(); entry.hasNext();) {
String unprocessedGroupDistinguishedName = (String) entry.next();
String unprocessedGroupCN = (String)unProcessedUserGroups.get(unprocessedGroupDistinguishedName);
if ( processedUserGroups.get(unprocessedGroupDistinguishedName) != null) {
Log.info("Found : " + unprocessedGroupDistinguishedName +" in processedGroups. skipping further processing of it..." );
// We already traversed this.
continue;
}
if (isSame (groupCN, unprocessedGroupCN) && isSame (groupDistinguishedName, unprocessedGroupDistinguishedName)) {
Log.info("Found Match DistinguishedName : " + unprocessedGroupDistinguishedName +", CN : " + unprocessedGroupCN );
return true;
}
}
for (Iterator entry = unProcessedUserGroups.keySet().iterator(); entry.hasNext();) {
String unprocessedGroupDistinguishedName = (String) entry.next();
String unprocessedGroupCN = (String)unProcessedUserGroups.get(unprocessedGroupDistinguishedName);
processedUserGroups.put(unprocessedGroupDistinguishedName, unprocessedGroupCN);
// Fetch Groups in unprocessedGroupCN and put them in newUnProcessedGroups
NamingEnumeration ns = executeSearch(ctx, SearchControls.SUBTREE_SCOPE, searchBase,
MessageFormat.format( SEARCH_GROUP_BY_GROUP_CN, new Object[] {unprocessedGroupCN}),
new String[] {CN, DISTINGUISHED_NAME, MEMBER_OF});
// Loop through the search results
while (ns.hasMoreElements()) {
SearchResult sr = (SearchResult) ns.next();
// Make sure we're looking at correct distinguishedName, because we're querying by CN
String userDistinguishedName = sr.getAttributes().get(DISTINGUISHED_NAME).get().toString();
if (!isSame(unprocessedGroupDistinguishedName, userDistinguishedName)) {
Log.info("Processing CN : " + unprocessedGroupCN + ", DN : " + unprocessedGroupDistinguishedName +", Got DN : " + userDistinguishedName +", Ignoring...");
continue;
}
Log.info("Processing for memberOf CN : " + unprocessedGroupCN + ", DN : " + unprocessedGroupDistinguishedName);
// Look for and process memberOf
Attribute memberOf = sr.getAttributes().get(MEMBER_OF);
if (memberOf != null) {
for ( Enumeration e1 = memberOf.getAll() ; e1.hasMoreElements() ; ) {
String unprocessedChildGroupDN = e1.nextElement().toString();
String unprocessedChildGroupCN = getCN(unprocessedChildGroupDN);
Log.info("Adding to List of un-processed groups : " + unprocessedChildGroupDN +", CN : " + unprocessedChildGroupCN);
newUnProcessedGroups.put(unprocessedChildGroupDN, unprocessedChildGroupCN);
}
}
}
}
if (newUnProcessedGroups.size() == 0) {
Log.info("newUnProcessedGroups.size() is 0. returning false...");
return false;
}
// process unProcessedUserGroups
return userMemberOf(ctx, searchBase, processedUserGroups, newUnProcessedGroups, groupCN, groupDistinguishedName);
}
private static NamingEnumeration executeSearch(DirContext ctx, int searchScope, String searchBase, String searchFilter, String[] attributes) throws NamingException {
// Create the search controls
SearchControls searchCtls = new SearchControls();
// Specify the attributes to return
if (attributes != null) {
searchCtls.setReturningAttributes(attributes);
}
// Specify the search scope
searchCtls.setSearchScope(searchScope);
// Search for objects using the filter
NamingEnumeration result = ctx.search(searchBase, searchFilter,searchCtls);
return result;
}
private static SearchResult executeSearchSingleResult(DirContext ctx, int searchScope, String searchBase, String searchFilter, String[] attributes) throws NamingException {
NamingEnumeration result = executeSearch(ctx, searchScope, searchBase, searchFilter, attributes);
SearchResult sr = null;
// Loop through the search results
while (result.hasMoreElements()) {
sr = (SearchResult) result.next();
break;
}
return sr;
}
}

None of above code snippets didn't worked for me. After 1 day spending on Google and tomcat source following code worked well to find user groups.
import java.util.Hashtable;
import javax.naming.CompositeName;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NameParser;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
public class MemberOfTest{
private static final String contextFactory = "com.sun.jndi.ldap.LdapCtxFactory";
private static final String connectionURL = "ldap://HOST:PORT";
private static final String connectionName = "CN=Query,CN=Users,DC=XXX,DC=XX";
private static final String connectionPassword = "XXX";
// Optioanl
private static final String authentication = null;
private static final String protocol = null;
private static String username = "XXXX";
private static final String MEMBER_OF = "memberOf";
private static final String[] attrIdsToSearch = new String[] { MEMBER_OF };
public static final String SEARCH_BY_SAM_ACCOUNT_NAME = "(sAMAccountName=%s)";
public static final String SEARCH_GROUP_BY_GROUP_CN = "(&(objectCategory=group)(cn={0}))";
private static String userBase = "DC=XXX,DC=XXX";
public static void main(String[] args) throws NamingException {
Hashtable<String, String> env = new Hashtable<String, String>();
// Configure our directory context environment.
env.put(Context.INITIAL_CONTEXT_FACTORY, contextFactory);
env.put(Context.PROVIDER_URL, connectionURL);
env.put(Context.SECURITY_PRINCIPAL, connectionName);
env.put(Context.SECURITY_CREDENTIALS, connectionPassword);
if (authentication != null)
env.put(Context.SECURITY_AUTHENTICATION, authentication);
if (protocol != null)
env.put(Context.SECURITY_PROTOCOL, protocol);
InitialDirContext context = new InitialDirContext(env);
String filter = String.format(SEARCH_BY_SAM_ACCOUNT_NAME, username);
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
constraints.setReturningAttributes(attrIdsToSearch);
NamingEnumeration results = context.search(userBase, filter,constraints);
// Fail if no entries found
if (results == null || !results.hasMore()) {
System.out.println("No result found");
return;
}
// Get result for the first entry found
SearchResult result = (SearchResult) results.next();
// Get the entry's distinguished name
NameParser parser = context.getNameParser("");
Name contextName = parser.parse(context.getNameInNamespace());
Name baseName = parser.parse(userBase);
Name entryName = parser.parse(new CompositeName(result.getName())
.get(0));
// Get the entry's attributes
Attributes attrs = result.getAttributes();
Attribute attr = attrs.get(attrIdsToSearch[0]);
NamingEnumeration e = attr.getAll();
System.out.println("Member of");
while (e.hasMore()) {
String value = (String) e.next();
System.out.println(value);
}
}
}

The easiest way is with 'lookup': (to open an Ldap Context: look above examples)
/**
* Tests if an Active Directory user exists in an Active Directory group.
* #param ctx LDAP Context.
* #param dnADGroup distinguishedName of group.
* #param dnADUser distinguishedName of user.
* #return True if user is member of group.
*/
public static boolean isMemberOfADGroup(LdapContext ctx, String dnADGroup, String dnADUser) {
try {
DirContext lookedContext = (DirContext) (ctx.lookup(dnADGroup));
Attribute attrs = lookedContext.getAttributes("").get("member");
for (int i = 0; i < attrs.size(); i++) {
String foundMember = (String) attrs.get(i);
if(foundMember.equals(dnADUser)) {
return true;
}
}
} catch (NamingException ex) {
String msg = "There has been an error trying to determin a group membership for AD user with distinguishedName: "+dnADUser;
System.out.println(msg);
ex.printStackTrace();
}
return false;
}

LDAP lookup methods of finding whether a user is a member of a group are not correct, especially if you're talking about a logged on user. For a user that's actually logged on the list of groups varies depending on which computer the user logged on. That list needs to include groups from domain trusts, nested groups and local groups.
If you're looking for group memberships of the currently logged on user or a user that you're logging on with a username and password in Java, try Waffle.
IWindowsAuthProvider prov = new WindowsAuthProviderImpl();
IWindowsIdentity identity = prov.logonUser("username", "password");
System.out.println("User identity: " + identity.getFqn());
for(IWindowsAccount group : identity.getGroups()) {
System.out.println(" " + group.getFqn() + " (" + group.getSidString() + ")");
}

Following up on Sundaramurthi's answer, it could be done even more straightforward way, where you don't query for all the user's group:
(&(objectClass=user)(sAMAccountName=XXXX)(memberOf=CN=YYY,OU=_Common-Access,OU=Groups,OU=_CORP,DC=XXX,DC=XX))
where
XXXX - user name
XXX.XX - domain name
YYY - group name
This lets you to just get an answer whether user is in a group or not.
So just do:
String userBase = "DC=XXX,DC=XX";
String CHECK_IF_USER_IN_GROUP = "(&(objectClass=user)(sAMAccountName=%s)(memberOf=CN=%s,OU=...,OU=...,OU=...,%s))";
String queryFilter = String.format(CHECK_IF_USER_IN_GROUP, user, group, userBase);
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
NamingEnumeration results = context.search(userBase, queryFilter, constraints);
if (results == null) {
throw new Exception("No answer from LDAP");
}
if (!results.hasMore()) {
System.out.println("No result found");
// user is not in the group
}
// user is in the group

Not sure about Java API specifics, but the generic way of doing this is adding a group check to the query/binding.

I can't give you a working code using java naming ldap.
I used Spring LDAP, and the way you do it:
Get the User object, do a search on the username something like sAMAccountName=USERNAME
After you get the object you retreive the property memberOf -> this will be a list and check for a specific one in Java.
That is the only way I could think of.

To query if a user belongs to a given group once you have established a connection you can query using either member or memberOf attribute in Active Directory.
Using memberOf Attribute :
filter used : (&(Group Member Attribute=Group DN)(objectClass=Group Object class))
Ex : (&(memberOf=CN=group,ou=qa_ou,dc=ppma,dc=org)(objectClass=group))
Using member Attribute :
filter used : (&(Group Member Attribute=User DN)(objectClass=Group Object class))
Ex : (&(member=CN=user,ou=qa_ou,dc=ppma,dc=org)(objectClass=group))

Unfortunately the answer varies with installations of AD as well as other types of LDAP server.
We had to solve the same problem. In the end we allowed the system administrator to provide us with an LDAP query-pattern where we substitute the user name (and group name if that needs to be variable too) into the pattern.

I found this useful:
retrieves-group-membership for Active Directory
And I have this piece of working code:
import java.util.Hashtable;
import javax.naming.CompositeName;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NameParser;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
import javax.naming.ldap.InitialLdapContext;
import javax.naming.ldap.LdapContext;
public class TestAD1 {
private static String userBase = "DC=SomeName,DC=SomeName,DC=SomeName,DC=SomeName,DC=COM,DC=US";
public static void main(String[] args) {
TestAD1 tad = new TestAD1();
try {
// Create a LDAP Context
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, "ldap.serviceaccount#domain.com");
env.put(Context.SECURITY_CREDENTIALS, "drowssap");
env.put(Context.PROVIDER_URL, "ldap://fully.qualified.server.name:389");
LdapContext ctx = new InitialLdapContext(env, null);
InitialDirContext inidircontext = new InitialDirContext(env);
DirContext dirctx = new InitialLdapContext(env, null);
System.out.println("Connection Successful.");
// Print all attributes of the name in namespace
SearchControls sctls = new SearchControls();
String retatts[] = {"sn", "mail", "displayName", "sAMAccountName"};
sctls.setReturningAttributes(retatts);
sctls.setSearchScope(SearchControls.SUBTREE_SCOPE);
String srchfilter = "(&(objectClass=user)(mail=*))";
String srchbase = userBase;
int totalresults = 0;
NamingEnumeration answer = dirctx.search(srchbase, srchfilter, sctls);
while (answer.hasMoreElements()) {
SearchResult sr = (SearchResult) answer.next();
totalresults++;
System.out.println(">>> " + sr.getName());
Attributes attrs = sr.getAttributes();
if (answer == null || !answer.hasMore()) {
System.out.println("No result found");
return;
}
if (attrs != null) {
try {
System.out.println(" surname: " + attrs.get("sn").get());
System.out.println(" Email - ID: " + attrs.get("mail").get());
System.out.println(" User - ID: " + attrs.get("displayName").get());
System.out.println(" Account Name: " + attrs.get("sAMAccountName").get());
tad.GetGroups(inidircontext, attrs.get("sAMAccountName").get().toString());
} catch (NullPointerException e) {
System.out.println("Error listing attributes..." + e);
}
}
System.out.println("Total Results : " + totalresults);
// close dir context
dirctx.close();
}
ctx.close();
} catch (NamingException e) {
System.out.println("Problem Search Active Directory..." + e);
//e.printStackTrace();
}
}
// Get all the groups.
public void GetGroups(InitialDirContext context, String username) throws NamingException {
String[] attrIdsToSearch = new String[]{"memberOf"};
String SEARCH_BY_SAM_ACCOUNT_NAME = "(sAMAccountName=%s)";
String filter = String.format(SEARCH_BY_SAM_ACCOUNT_NAME, username);
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
constraints.setReturningAttributes(attrIdsToSearch);
NamingEnumeration results = context.search(userBase, filter, constraints);
// Fail if no entries found
if (results == null || !results.hasMore()) {
System.out.println("No result found");
return;
}
SearchResult result = (SearchResult) results.next();
Attributes attrs = result.getAttributes();
Attribute attr = attrs.get(attrIdsToSearch[0]);
NamingEnumeration e = attr.getAll();
System.out.println(username + " is Member of the following groups : \n");
while (e.hasMore()) {
String value = (String) e.next();
System.out.println(value);
}
}
}

Also you can modify the accepted answer from here: Authenticating against Active Directory with Java on Linux with the following:
String group="name of the group";
Iterator ig = groups.iterator();
Boolean bool=false;
while (ig.hasNext()) {
String a=ig.next().toString();
if (a.equals(group)) {
JOptionPane.showMessageDialog(this, "Authentication succeeded!");
bool=true;
// here you can do smth in case of success
}
}
if (bool==false){
JOptionPane.showMessageDialog(this, "Permission denied");
}

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

LDAP Auth for Wicket - java

Related

Java code wrote for AD account creation but LDAP exception occurred

LDAP: How to retrieve user data from multiple AD groups in JAVA

Getting UnSupported Protocol : rmi/t3 in PL/sql on weblogic user creation using JMX

List Ldap servers in the domain and authenticate

Java LDAP - Determine if user in a given group?

Categories

Resources