This little piece of awesome demonstrates the incredibly complex task of verifying that a password is 8 chars or longer.

gistfile1.java

13.6.1.2 Password Validation Plug-in Code Example

import java.io.*;
import java.lang.*;
import java.util.*;
import javax.naming.*;
import javax.naming.directory.*;
import oracle.ldap.ospf.*;
/**
 * This PRE modify plug-in will check whether the "userPassword"
 * is greater than 8 characters in length
 */
public class CheckPassword extends ServerPluginAdapter {
 
    // This PRE modify plug-in takes in a PluginDetail Object
    // and returns a PluginResult Object
    public PluginResult pre_modify(PluginDetail plgObj)
       throws Exception
    {
       try {
         // Retrieve the LdapOperation Object from the PluginDetail
         ModifyLdapOperation opObj = (ModifyLdapOperation)
plgObj.getLdapOperation();
 
        
         // Retrieve the LdapModification Object from the LdapOperation
            LdapModification modObj = opObj.getLdapModification();
 
 
        
         // Retrieve the PluginFlexfield Object from the PluginDetail
         PluginFlexfield flxFldObj = plgObj.getPluginFlexfield();
        
         // Retrieve the custom information from the PluginFlexfield
         // Get the minimum password length
 String passwdlength =
            flxFldObj.getFlexfield("minPwdLength");
 
        // Create a Result Object to return to the OID server
           PluginResult plgResObj = new PluginResult();
 
         // Check if the LdapModification Object is a NULL
         // set the appropriate error and error message
         if (modObj==null)
         {
            throw new PluginException("CheckPassword Plug-in Execution
Error");
         }
 
          // Retrieve the "userPassword" Attribute Value
         ModificationItem modItem = modObj.getModificationItemAt(0);
         BasicAttribute attr = (BasicAttribute)modItem.getAttribute();
         String attrval = null;
          if ((attr.getID()).equals("userpassword"))
     attrval = attr.get(0);
 
         // Check for the password length and set appropriate error
         // and error message
          if (attrval.length() < Integer.parseInt(passwdlength))
         {
             throw new PluginException("userPassword is less than 8
characters");
         }
        
        // Return the PluginResult Object to the OID Server
        return plgResObj;
    }
    // Catch any unexpected exception which may occur and throw
    // it back to the OID server to log it
    catch (Exception e)
    {
        throw e;
    }
  }
}