通过LDAP验证Active Directory服务

原文地址：http://www.byywee.com/page/M0/S215/215725.html

C#:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.DirectoryServices;
using System.Configuration;
using System.Text.RegularExpressions;



namespace ldapcs
{
    class Program
    {
        static void Main(string[] args)
        {
            string path = "LDAP://192.168.137.210:389/ou=pet,dc=abc,dc=com ";
            string username = "uname";
            string pwd = "upwd";
            string domain = "abc.com";


            LdapAuthentication ldap = new LdapAuthentication(path);
            Console.WriteLine( ldap.IsAuthenticated(domain, username, pwd));
            Console.WriteLine(ldap.GetGroups());
        }

        public class LdapAuthentication
        {
            private string _path;
            private string _filterAttribute;

            public LdapAuthentication(string path)
            {
                _path = path;
            }

            public bool IsAuthenticated(string domain, string username, string pwd)
            {
                string domainAndUsername = domain + @"\" + username;
                DirectoryEntry entry = new DirectoryEntry(_path, username, pwd);

                try
                {
                    //Bind to the native AdsObject to force authentication.
                    object obj = entry.NativeObject;

                    DirectorySearcher search = new DirectorySearcher(entry);

                    search.Filter = "(SAMAccountName=" + username + ")";
                    search.PropertiesToLoad.Add("cn");
                    SearchResult result = search.FindOne();

                    if (null == result)
                    {
                        return false;
                    }

                    //Update the new path to the user in the directory.
                    _path = result.Path;
                    _filterAttribute = (string)result.Properties["cn"][0];
                }
                catch (Exception ex)
                {
                    throw new Exception("Error authenticating user. " + ex.Message);
                }

                return true;
            }

            public string GetGroups()
            {
                DirectorySearcher search = new DirectorySearcher(_path);
                search.Filter = "(cn=" + _filterAttribute + ")";
                //search.SearchRoot = "PET";
                StringBuilder groupNames = new StringBuilder();

                try
                {
                    SearchResult result = search.FindOne();
                    int propertyCount = result.Properties["memberOf"].Count;
                    string dn;
                    int equalsIndex, commaIndex;

                    for (int propertyCounter = 0; propertyCounter < propertyCount; propertyCounter++)
                    {
                        dn = (string)result.Properties["memberOf"][propertyCounter];
                        equalsIndex = dn.IndexOf("=", 1);
                        commaIndex = dn.IndexOf(",", 1);
                        if (-1 == equalsIndex)
                        {
                            return null;
                        }
                        groupNames.Append(dn.Substring((equalsIndex + 1), (commaIndex - equalsIndex) - 1));
                        groupNames.Append("|");
                    }
                }
                catch (Exception ex)
                {
                    throw new Exception("Error obtaining group names. " + ex.Message);
                }
                return groupNames.ToString();
            }
        }



        /// <summary>
        /// 验证AD用户是否登录成功
        /// </summary>
        /// <param name="domain"></param>
        /// <param name="userName"></param>
        /// <param name="password"></param>
        /// <returns></returns>
        public static bool TryAuthenticate(string domain, string userName, string password)
        {
            bool isLogin = false;
            try
            {
                DirectoryEntry entry = new DirectoryEntry(string.Format("LDAP://{0}", domain), userName, password);
                entry.RefreshCache();
                isLogin = true;
            }
            catch
            {
                isLogin = false;
            }
            return isLogin;
        }
   }
}

Java:

import java.util.Hashtable;
import java.util.Enumeration;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls ;
import javax.naming.NamingEnumeration;
import javax.naming.directory.SearchResult;




public class LDAPtest {


public static void main(String[] args) {
    LDAPtest ldap=new LDAPtest();
ldap.init();
}
public void init(){
DirContext ctx = null;
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://192.168.137.210:389/");//连接LDAP的URL和端口


//env.put(Context.SECURITY_AUTHENTICATION, "simple");//以simple方式发送
env.put(Context.SECURITY_PRINCIPAL, "cn=uname,ou=PET,DC=abc,DC=com");//用户名
env.put(Context.SECURITY_CREDENTIALS, "upwd");//密码
String baseDN="ou=PET,DC=abc,DC=com";//查询区域
String filter="(&(objectClass=person))";//条件查询

try{
ctx = new InitialDirContext(env);//连接LDAP服务器
System.out.println("Success");
SearchControls constraints = new SearchControls();//执行查询操作
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
NamingEnumeration en=ctx.search(baseDN, filter, constraints); 
if(en==null){
System.out.println("There have no value");
}else{
while(en.hasMoreElements()){

Object obj=en.nextElement();
if(obj instanceof SearchResult){
SearchResult sr=(SearchResult) obj;
String cn=sr.getName();

System.out.println("cccccc: "+cn);
}
}
}

}catch(javax.naming.AuthenticationException e){
System.out.println(e.getMessage());
}catch(Exception e){
System.out.println("erro："+e);
}
}
}