Help to solve reset User LDAP problem

[Huong NguyenB]

Hi members,
I 've wrote a java class to change user password by LDAP, I used code in this forum for reference, but when running, It created an error. Please help me to solve this.
Thanks a lot.
These errors are here:
Test
So ngau nhien: 54g0o7i5
OK
OK2
OK3
>>>1CN=Nguyen Thi Thu Huong,OU=KTTH,OU=C5
OK4
OK5
Test: [Ljavax.naming.directory.ModificationItem;@ca2dce
Sr: CN=Nguyen Thi Thu Huong,OU=KTTH,OU=C5: null:null:{objectcategory=objectCategory: CN=Person,CN=Schema,CN=Configuration,DC=vms,DC=com,DC=vn, userparameters=userParameters: m: d , whencreated=whenCreated: 20080915103229.0Z, badpwdcount=badPwdCount: 0, mdbusedefaults=mDBUseDefaults: TRUE, codepage=codePage: 0, mail=mail: [e-mail], objectguid=objectGUID: ?s/??M?-??, msexchuseraccountcontrol=msExchUserAccountControl: 0, msexchmailboxsecuritydescriptor=msExchMailboxSecurityDescriptor:

....
Problem resetting password: javax.naming.NameNotFoundException: [LDAP: error code 32 - 0000208D: NameErr: DSID-031001CD, problem 2001 (NO_OBJECT), data 0, best match of:
'DC=vms,DC=com,DC=vn'... remaining name 'cn=LDAP://10.151.151.11/DC=vms,DC=com,DC=vnhuongntt'

Here is my code

import java.util.Hashtable;

import java.util.*;

import javax.naming.*;   
import javax.naming.ldap.*;
import javax.naming.directory.*;  
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NamingException;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.ModificationItem;
import java.security.*;


public class ResetPass {
	  public static DirContext ldapContext;
	  public static String  baseName = ",DC=vms,DC=com,DC=vn";
	  public static String serverIP = "10.151.151.11";
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		  
		
		// Set up environment for creating initial context

		//ADConnection();
		//updatePassword("huongntt", "huongntt85888");

		// TODO Auto-generated method stub
		System.out.println("Test");
		System.out.println("So ngau nhien: "+MaNgauNhien_SoChu(8));
		changePasswordLDAP("huongntt","huongntt858999");
	}
	 public static void changePasswordLDAP(String UserName,String NewPassWord)
	 {

         Hashtable env = new Hashtable();      
        String adminName = "vms\\userr";      
        String adminPassword = "useropruseroprr";      
        String userName = "ams\\huongntt";      
        String oldPassword = "huongntt85888";      
        String newPassword = "huongntt8888";      
        String searchBase = ",DC=ams,DC=com,DC=cn";      
  
        env.put(Context.INITIAL_CONTEXT_FACTORY,   
                "com.sun.jndi.ldap.LdapCtxFactory");   
  
        env.put(Context.SECURITY_AUTHENTICATION, "simple");   
        env.put(Context.SECURITY_PRINCIPAL, adminName);   
        env.put(Context.SECURITY_CREDENTIALS, adminPassword);   
        
        String ldapURL = "LDAP://10.151.151.19/DC=ams,DC=com,DC=cn";   
        env.put(Context.PROVIDER_URL,ldapURL); 
  
        try {   
  
            // Create the initial directory context   
            DirContext ctx = new InitialDirContext(env);   
            System.out.println("OK"); //ket noi thanh cong
               
  
               //  OK up
            // Create the search controls   
            SearchControls searchCtls = new SearchControls();   
  
            // Specify the search scope   
            searchCtls.setSearchScope(SearchControls.SUBTREE_SCOPE);   
  
            // Specify the attributes to return   
            //String returnedAtts[] = {};   
            //searchCtls.setReturningAttributes(returnedAtts);   
  
            String searchFilter = "(&(objectClass=user)(sAMAccountName="+UserName+"))";   

            System.out.println("OK2");
              
            // initialize counter to total the results   
            int totalResults = 0;   
  
            // Search for objects using the filter   
            NamingEnumeration answer = ctx.search("" ,searchFilter,searchCtls);   
           
            System.out.println("OK3");
            SearchResult sr = (SearchResult)answer.next();   
  
            totalResults++;   
  
            System.out.println(">>>" + totalResults+sr.getName());   
            System.out.println("OK4");
  
            // Replace the "unicdodePwd" attribute with a new value   
            // Password must be both Unicode and a quoted string   
            String newQuotedPassword = "\"" + newPassword + "\"";   
            byte[] newUnicodePassword = newQuotedPassword.getBytes("UTF-16LE");   
  
            // set password is a ldap modfy operation   
            ModificationItem[] mods = new ModificationItem[1];   
              mods[0] = new ModificationItem(DirContext.REPLACE_ATTRIBUTE,   
                    new BasicAttribute("unicodePwd", newUnicodePassword));   
              System.out.println("OK5");
              
            if (mods == null) {   
                System.out.println("Mods is empty");   
  
            } else {   
                System.out.println("Test: "+mods);   
            }    
           //ctx.modifyAttributes( userName, mods);
          Attributes attrs = sr.getAttributes();   
          System.out.println("Sr: "+sr.toString());   
          ctx.modifyAttributes("cn="+ldapURL+UserName,mods ); //Error here
                 
  
            System.out.println("Reset Password for: " + userName);   
            ctx.close();   
  
        } catch (NamingException e) {   
            System.out.println("Problem resetting password: " + e);   
  
        } catch (Exception e) {   
            System.out.println("Problem encoding password: " + e);   
        }   
  

	 }
	  public static String MaNgauNhien_SoChu(int codeCount) //create new random password
      {
          String allChar = "0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z";
          String[] allCharArray = allChar.split(",");
          String randomCode = "";
          int temp = -1;

          Random rand = new Random();
          for (int i = 0; i < codeCount; i++)
          {
              if (temp != -1)
              {
                  rand = new Random(i * temp * ((int)System.currentTimeMillis()));
              }
              int t = rand.nextInt(36);
              if (temp != -1 && temp == t)
              {
                  return MaNgauNhien_SoChu(codeCount);
              }
              temp = t;
              randomCode += allCharArray[t];
          }
          return randomCode;
      }
	  

}

[Joanne Neal]

You need to print out the distinguished name of the user you are trying to modify.
Add

System.out.println("dn = " + "cn=" + ldapURL + UserName);

before the ctx.modifyAttributes line and check that it is correct. The error is saying the user can't be found.

I don't want to discourage you too much, but using LDAP to change the password of an Active Directory user is a real pain. Good luck.