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Core classes for the runtime used by Java and Android apps generated with GeneXus

There is a newer version: 4.7.3

package com.genexus.util;

import com.genexus.diagnostics.core.ILogger;
import com.genexus.diagnostics.core.LogManager;

import java.util.Hashtable;
import java.util.Vector;

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.BasicAttributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;

public class LDAPClient {
	private static final ILogger logger = LogManager.getLogger(LDAPClient.class);
  String ldapHost;
  int port;
  String authentication;
  String user;
  String password;
  byte secure;
  DirContext ctx;

  public LDAPClient() {
    port = 389;
    authentication = "simple";
    user = "";
    password = "";
  }

  public void setHost(String host)
  {
    ldapHost = host;
  }

  public void setPort(int port)
  {
    this.port = port;
  }

  public void setAuthenticationMethod(String authentication)
  {
    this.authentication = authentication;
  }

  public void setUser(String user)
  {
    this.user = user;
  }

  public void setPassword(String password)
  {
    this.password = password;
  }
  
  public void setSecure(byte secure)
  {
    this.secure = secure;
  }  

  public byte connect()
  {
    String host;
    Hashtable env = new Hashtable<>(5);

    if (ldapHost.equals(""))
    {
      return 0;
    }
    else
    {
      env.put(Context.INITIAL_CONTEXT_FACTORY,
              "com.sun.jndi.ldap.LdapCtxFactory");
      host = "ldap://" + ldapHost + ":" + port;
      env.put(Context.PROVIDER_URL, host);

      env.put(Context.SECURITY_AUTHENTICATION, authentication);
      env.put(Context.SECURITY_PRINCIPAL, user);
      env.put(Context.SECURITY_CREDENTIALS, password);
	  if (secure == 1)
	  {
		  env.put(Context.SECURITY_PROTOCOL, "ssl");
	  }

      try {
        // Create initial context
        ctx = new InitialDirContext(env);
      }
      catch (NamingException e) {
		  logger.error("Error in connect", e);
		  return 0;
      }

      return 1;
    }
  }

  public void disconnect()
  {
    try
    {
      ctx.close();
    }
    catch (NamingException e)
    {
      	logger.error("Error in disconnect", e);
    }
  }

  public Vector getAttribute(String attName, String context, GXProperties ldapAttributes)
  {
    Vector strResult = new Vector<>();
    Attributes matchAttrs = new BasicAttributes(true);
    String searchFilter = "";
    if (ldapAttributes.count() > 0)
    {
	   	searchFilter = "(&";
	    for(int i=0; i