package digital_signature;

import java.io.IOException;
import java.util.Properties;

import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;

public class ldap {
	public static void main(String[] args) throws IOException, Exception{
		String username = "*****";
		String password = "######";

//	public static boolean authenticateJndi(String username, String password) throws Exception{

	    Properties props = new Properties();
	    props.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
	    props.put(Context.PROVIDER_URL, "ldap://LDAPSERVER:PORT");
	    props.put(Context.SECURITY_PRINCIPAL, "uid=adminuser,ou=special users,o=xx.com");//adminuser - User with special priviledge, dn user
	    props.put(Context.SECURITY_CREDENTIALS, "adminpassword");//dn user password


	    InitialDirContext context = new InitialDirContext(props);

	    SearchControls ctrls = new SearchControls();
	    ctrls.setReturningAttributes(new String[] { "givenName", "sn","memberOf" });
	    ctrls.setSearchScope(SearchControls.SUBTREE_SCOPE);

	    NamingEnumeration<javax.naming.directory.SearchResult> answers = context.search("o=xx.com", "(uid=" + username + ")", ctrls);
	    javax.naming.directory.SearchResult result = answers.nextElement();

	    String user = result.getNameInNamespace();

	    try {
	        props = new Properties();
	        props.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
	        props.put(Context.PROVIDER_URL, "ldap://LDAPSERVER:PORT");
	        props.put(Context.SECURITY_PRINCIPAL, user);
	        props.put(Context.SECURITY_CREDENTIALS, password);

	   context = new InitialDirContext(props);
	    } catch (Exception e) {
//	        return false;
	    }
//	    return true;
	}

}