Question

我在网站上搜索了相关信息，发现了这个： ASP.NET C# Active Directory - See how long before a user's password expires

解释了如何根据域策略获取密码到期时的值。

我的问题是：如果用户的OU组策略具有不同的MaxPasswordAge值，会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所支持的包装器的对象包含在这个等式中 - 它将是一个死的答案！

Answer 1

让我从包含Visual Basic和VBScript示例的http://support.microsoft.com/kb/323750开始，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。它还有一条注释，指向AloInfo.exe作为MS的工具，可用于获取密码年龄。

以下是示例：

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");
    }
}

Answer 3

使用以下方法获取帐户的到期日期 -

public static DateTime GetPasswordExpirationDate(string userId)
    {
        string forestGc = String.Format("GC://{0}", Forest.GetCurrentForest().Name);
        var searcher = new DirectorySearcher();
        searcher = new DirectorySearcher(new DirectoryEntry(forestGc));
        searcher.Filter = "(sAMAccountName=" + userId + ")";
        var results = searcher.FindOne().GetDirectoryEntry();
        return (DateTime)results.InvokeGet("PasswordExpirationDate");
    }

Answer 4

以前的一些答案依赖于DirectoryEntry.InvokeGet方法which MS says should not be used。所以这是另一种方法：

public static DateTime GetPasswordExpirationDate(UserPrincipal user)
{
    DirectoryEntry deUser = (DirectoryEntry)user.GetUnderlyingObject();
    ActiveDs.IADsUser nativeDeUser = (ActiveDs.IADsUser)deUser.NativeObject;
    return nativeDeUser.PasswordExpirationDate;
}

您需要添加对通常位于C：\ Windows \ System32 \ activeds.tlb的ActiveDS COM库的引用。

Active Directory用户密码到期日期.NET / OU组策略

4 个答案: