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使用WinNT://provider和目录服务连接到远程计算机会忽略用户名/密码

directoryservices asp.net c#

Peter · 技术社区 · 15 年前

我正在使用DirectoryServices和WinNT://provider连接到远程计算机。然后我检查一些组成员信息,并可能从指定的本地组中添加或删除域用户。

代码:

    string strUserPath = "WinNT://DomainName/someuser,user";
    DirectoryEntry deComputer = new DirectoryEntry("WinNT://" + Computername + ",computer");
    deComputer.RefreshCache();
    DirectoryEntry deGroup = deComputer.Children.Find("administrators", "group");

    IEnumerable members = deGroup.Invoke("members", null);
    List<DirectoryEntry> r = new List<DirectoryEntry>();

    foreach (object o in members)
    {
        DirectoryEntry deMember = new DirectoryEntry(o);

        r.Add(deMember);
    }

    deGroup.Invoke("Add", strUserPath);
    deGroup.CommitChanges();

    deGroup.Invoke("Remove", strUserPath);
    deGroup.CommitChanges();

因此,我将代码移到一个ASP.NETWeb应用程序中,该应用程序通过web.config的模拟部分模拟服务帐户。我正在模拟的帐户在任何工作站上都没有管理权限,因此我在构造函数中输入用户名/密码,以便输入计算机,如下所示:

DirectoryEntry deComputer = new DirectoryEntry("WinNT://" + Computername + ",computer", username, password);

用户名是在每个工作站上具有本地管理权限的域帐户的用户名。如果我查看结果deComputer对象的Username属性,我可以看到Username与我输入的匹配。另外,如果我输入了一个无效的密码,它会抛出一个错误,因此它以某种方式进行身份验证。

但是,如果我现在尝试从远程工作站添加或删除一个用户,我会得到一个一般的拒绝访问错误。如果我添加ASP.Net在该工作站上作为本地管理员使用的服务帐户,它将添加和删除没有问题。

所以接下来我尝试使用LogonAPI(advapi32.dll->LogonUser调用)以用户帐户登录,该帐户是所有工作站上的本地管理员,模拟生成的WindowsIdentity并尝试仅运行原始的解压缩程序实例化。当我执行此操作时,每个属性(路径除外)都会返回一个OLE异常。。。

我很迷茫下一步该怎么办。任何帮助都将不胜感激。

--变通办法--

3 回复 | 直到 12 年前

Oleg 14 年前

你试过用吗 AuthenticationTypes.Secure 作为的附加参数 DirectoryEntry 在用户名和密码之后?

顺便说一下,如果你想连接到远程计算机,你不应该使用 LogonUser . 正确的API是 WNetAddConnection2 (见 http://msdn.microsoft.com/en-us/library/aa385413.aspx )或者 NetUseAdd (见 http://msdn.microsoft.com/en-us/library/aa370645.aspx )

Peter 12 年前

因为这是一个很流行的问题,所以我将答案分离出来,并将代码转换为C#

这是最后的代码,为我工作。在使用DirectoryEntry之前,首先使用WNetAddConnection2建立连接。

public static class CredentialSetter
{
    public static void SetCredentials()
    {
        string Computername = "SomeComputer";
        //Create connection to remote computer'
        using (NetworkConnection nc = new NetworkConnection("\\\\" + Computername + "", new NetworkCredential("Domain\\Login", "Password")))
        {
            //try connecting using DirectoryEntry to the same machine and add me as a user'
            string strUserPath = string.Format("WinNT://{0}/{1},user", "DOMAIN", "USER");
            DirectoryEntry deGroup = new DirectoryEntry("WinNT://" + Computername + "/Administrators");
            deGroup.RefreshCache();

            //add and remove the user from the group'
            deGroup.Invoke("Add", strUserPath);
            deGroup.CommitChanges();
            Console.WriteLine("User Added to computer " + Computername);

            deGroup.Invoke("Remove", strUserPath);
            deGroup.CommitChanges();
            Console.WriteLine("User Removed from computer " + Computername);

            deGroup.Close();
        }
        Console.ReadLine();
    }

    public class NetworkConnection : IDisposable
    {
        private string _networkName;
        public NetworkConnection(string networkName, NetworkCredential credentials)
        {
            _networkName = networkName;

            dynamic netResource = new NetResource
            {
                Scope = ResourceScope.GlobalNetwork,
                ResourceType = ResourceType.Disk,
                DisplayType = ResourceDisplaytype.Share,
                RemoteName = networkName
            };

            dynamic result = WNetAddConnection2(netResource, credentials.Password, credentials.UserName, 0);

            if (result != 0)
            {
                throw new IOException("Error connecting to remote share", result);
            }
        }

        ~NetworkConnection()
        {
            Dispose(false);
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected void Dispose(bool disposing)
        {
            WNetCancelConnection2(_networkName, 0, true);
        }

        [DllImport("mpr.dll")]
        private static extern int WNetAddConnection2(NetResource netResource, string password, string username, int flags);

        [DllImport("mpr.dll")]
        private static extern int WNetCancelConnection2(string name, int flags, bool force);
    }

    [StructLayout(LayoutKind.Sequential)]
    public class NetResource
    {
        public ResourceScope Scope;
        public ResourceType ResourceType;
        public ResourceDisplaytype DisplayType;
        public int Usage;
        public string LocalName;
        public string RemoteName;
        public string Comment;
        public string Provider;
    }

    public enum ResourceScope : int
    {
        Connected = 1,
        GlobalNetwork,
        Remembered,
        Recent,
        Context
    }

    public enum ResourceType : int
    {
        Any = 0,
        Disk = 1,
        Print = 2,
        Reserved = 8
    }

    public enum ResourceDisplaytype : int
    {
        Generic = 0x0,
        Domain = 0x1,
        Server = 0x2,
        Share = 0x3,
        File = 0x4,
        Group = 0x5,
        Network = 0x6,
        Root = 0x7,
        Shareadmin = 0x8,
        Directory = 0x9,
        Tree = 0xa,
        Ndscontainer = 0xb
    }
}

-1

Helvio Junior 10 年前

错误(0x80004005):未指定的错误

我在连接到远程窗口时遇到了一些问题,错误为(0x80004005):未指定的错误。我决定如下:

//Define path
//This path uses the full path of user authentication
String path = string.Format("WinNT://{0}/{1},user", server_address, username);
DirectoryEntry deBase = null;
try
{
    //Try to connect with secure connection
    deBase = new DirectoryEntry(path, username, _passwd, AuthenticationTypes.Secure);

    //Connection test
    //After test define the deBase with the parent of user (root container)
    object nativeObject = deBase.NativeObject;
    deBase = deBase.Parent;

}
catch (Exception ex)
{
    //If an error occurred try without Secure Connection
    try
    {
        deBase = new DirectoryEntry(path, username, _passwd);

        //Connection test
        //After test define the deBase with the parent of user (root container)
        object nativeObject = deBase.NativeObject;
        deBase = deBase.Parent;
        nativeObject = deBase.NativeObject;

    }
    catch (Exception ex2)
    {
        //If an error occurred throw the error
        throw ex2;
    }
}

希望有帮助。小海尔维奥