Active Directory用户密码到期日期.NET/OU组策略

Question

我搜索了该站点以获取信息,并发现: ASP.NET C#Active Directory - 查看用户密码到期之前的时间

它解释了如何根据域策略获取密码何时到期的值.

我的问题是:如果用户的OU组策略具有不同的MaxPasswordAge值,覆盖域组策略中指定的值,该怎么办？如何以编程方式获取OU的组策略对象？

编辑:为了使这个问题更加清晰,我正在添加此编辑.我所追求的是能够告诉用户的密码何时到期.据我所知,日期值可以由域本地策略或组对象策略控制.我有一个Linq2DirectoryService Provider,它将Linq转换为Ldap查询.因此,获取日期到期值的LDAP查询对于此subj将是最佳的.如果你回答包括.net所支持的对象包装器被包含在这个等式中 - 它将是一个死的答案!

Answer 1

让我从http://support.microsoft.com/kb/323750开始,其中包含Visual Basic和VBScript示例以及http://www.anitkb.com/2010/03/how-to-implement-active-directory.html其中概述了maxPwdAge OU设置如何影响计算机,而不是用户.它还有一个注释,指向AloInfo.exe作为MS的工具,可用于获取密码年龄.

这是一个例子:

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

namespace LDAP
{
    class Program
    {
        static void Main(string[] args)
        {
            string domainAndUsername = string.Empty;
            string domain = string.Empty;
            string userName = string.Empty;
            string passWord = string.Empty;
            AuthenticationTypes at = AuthenticationTypes.Anonymous;
            StringBuilder sb = new StringBuilder();

            domain = @"LDAP://w.x.y.z";
            domainAndUsername = @"LDAP://w.x.y.z/cn=Lawrence E."+
                        " Smithmier\, Jr.,cn=Users,dc=corp,"+
                        "dc=productiveedge,dc=com";
            userName = "Administrator";
            passWord = "xxxpasswordxxx";
            at = AuthenticationTypes.Secure;

            DirectoryEntry entry = new DirectoryEntry(
                        domain, userName, passWord, at);

            DirectorySearcher mySearcher = new DirectorySearcher(entry);

            SearchResultCollection results;
            string filter = "maxPwdAge=*";
            mySearcher.Filter = filter;

            results = mySearcher.FindAll();
            long maxDays = 0;
            if(results.Count>=1)
            {
                Int64 maxPwdAge=(Int64)results[0].Properties["maxPwdAge"][0];
                maxDays = maxPwdAge/-864000000000;
            }

            DirectoryEntry entryUser = new DirectoryEntry(
                        domainAndUsername, userName, passWord, at);
            mySearcher = new DirectorySearcher(entryUser);

            results = mySearcher.FindAll();
            long daysLeft=0;
            if (results.Count >= 1)
            {
                var lastChanged = results[0].Properties["pwdLastSet"][0];
                daysLeft = maxDays - DateTime.Today.Subtract(
                        DateTime.FromFileTime((long)lastChanged)).Days;
            }
            Console.WriteLine(
                        String.Format("You must change your password within"+
                                      " {0} days"
                                     , daysLeft));
            Console.ReadLine();
        }
    }
}

Answer 2

以下代码可以帮助我获取域和本地用户帐户的密码到期日期:

public static DateTime GetPasswordExpirationDate(string userId, string domainOrMachineName)
{
    using (var userEntry = new DirectoryEntry("WinNT://" + domainOrMachineName + '/' + userId + ",user"))
    {
        return (DateTime)userEntry.InvokeGet("PasswordExpirationDate");
    }
}