Question

我需要能够在尝试在非域环境中的远程计算机上读取和写入文件时以编程方式进行身份验证。

当您在类似于\\ targetComputer \ C $ \ targetFolder或\\ targetComputer \ admin $的Windows RUN提示符中键入命令时，如果targetComputer不在域中，系统将提示您输入用户名和密码。输入用户名和密码后，您就可以完全访问远程文件夹。

如何在C＃中以编程方式完成此身份验证？

我试过了..

- 模拟，但似乎只能在域环境中使用。

- CMDKEY.exe，但它似乎也只适用于域环境。

必须有办法做到这一点，但到目前为止，我一直没有运气地搜索高低。也许我只是在寻找错误的东西？我敢肯定我不是第一个有这个问题的人。任何帮助将不胜感激。

谢谢！

编辑：

我想我刚发现了一个不同的SO帖子来回答我的问题：Accessing a Shared File (UNC) From a Remote, Non-Trusted Domain With Credentials

我现在将继续使用它，看看它在哪里。

谢谢！

Answer 1

模拟也适用于Peer / LAN网络。我得到了典型的家庭网络，其中一些机器在默认的“工作组”上，一些在命名的机器上，如果我记得在安装时这样做。

以下是我在IIS服务器应用程序中使用的代码，用于访问其他计算机上的文件（无需在两台计算机上使用相同的用户和密码，从某处复制并修改以供我使用）：

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Security.Principal;
using System.ComponentModel;

/// <summary>
/// Class to impersonate another user. Requires user, pass and domain/computername
/// All code run after impersonationuser has been run will run as this user.
/// Remember to Dispose() afterwards.
/// </summary>
public class ImpersonateUser:IDisposable {

    private WindowsImpersonationContext LastContext = null;
    private IntPtr LastUserHandle = IntPtr.Zero;

    #region User Impersonation api
    [DllImport("advapi32.dll", SetLastError = true)]
    public static extern bool LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, out IntPtr phToken);

    [DllImport("advapi32.dll", SetLastError = true)]
    public static extern bool ImpersonateLoggedOnUser(int Token);

    [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern bool DuplicateToken(IntPtr token, int impersonationLevel, ref IntPtr duplication);

    [DllImport("kernel32.dll")]
    public static extern Boolean CloseHandle(IntPtr hObject);

    public const int LOGON32_PROVIDER_DEFAULT = 0;
    public const int LOGON32_PROVIDER_WINNT35 = 1;
    public const int LOGON32_LOGON_INTERACTIVE = 2;
    public const int LOGON32_LOGON_NETWORK = 3;
    public const int LOGON32_LOGON_BATCH = 4;
    public const int LOGON32_LOGON_SERVICE = 5;
    public const int LOGON32_LOGON_UNLOCK = 7;
    public const int LOGON32_LOGON_NETWORK_CLEARTEXT = 8;// Win2K or higher
    public const int LOGON32_LOGON_NEW_CREDENTIALS = 9;// Win2K or higher
    #endregion

    public ImpersonateUser(string username, string domainOrComputerName, string password, int nm = LOGON32_LOGON_NETWORK) {

        IntPtr userToken = IntPtr.Zero;
        IntPtr userTokenDuplication = IntPtr.Zero;

        bool loggedOn = false;

        if (domainOrComputerName == null) domainOrComputerName = Environment.UserDomainName;

        if (domainOrComputerName.ToLower() == "nt authority") {
            loggedOn = LogonUser(username, domainOrComputerName, password, LOGON32_LOGON_SERVICE, LOGON32_PROVIDER_DEFAULT, out userToken);
        } else {
            loggedOn = LogonUser(username, domainOrComputerName, password, nm, LOGON32_PROVIDER_DEFAULT, out userToken);
        }

        WindowsImpersonationContext _impersonationContext = null;
        if (loggedOn) {
            try {
                // Create a duplication of the usertoken, this is a solution
                // for the known bug that is published under KB article Q319615.
                if (DuplicateToken(userToken, 2, ref userTokenDuplication)) {
                    // Create windows identity from the token and impersonate the user.
                    WindowsIdentity identity = new WindowsIdentity(userTokenDuplication);
                    _impersonationContext = identity.Impersonate();
                } else {
                    // Token duplication failed!
                    // Use the default ctor overload
                    // that will use Mashal.GetLastWin32Error();
                    // to create the exceptions details.
                    throw new Win32Exception();
                }
            } finally {
                // Close usertoken handle duplication when created.
                if (!userTokenDuplication.Equals(IntPtr.Zero)) {
                    // Closes the handle of the user.
                    CloseHandle(userTokenDuplication);
                    userTokenDuplication = IntPtr.Zero;
                }

                // Close usertoken handle when created.
                if (!userToken.Equals(IntPtr.Zero)) {
                    // Closes the handle of the user.
                    CloseHandle(userToken);
                    userToken = IntPtr.Zero;
                }
            }
        } else {
            // Logon failed!
            // Use the default ctor overload that 
            // will use Mashal.GetLastWin32Error();
            // to create the exceptions details.
            throw new Win32Exception();
        }

        if (LastContext == null) LastContext = _impersonationContext;
    }

    public void Dispose() {
        LastContext.Undo();
        LastContext.Dispose();
    }
}

经过一番尝试后，我发现的具体代码是：

using (var impersonation = new ImpersonateUser("OtherMachineUser", "OtherMachineName", "Password", LOGON32_LOGON_NEW_CREDENTIALS))
    {
        var files = System.IO.Directory.GetFiles("\\OtherMachineName\fileshare");
    }

非域Windows环境下的C＃编程远程文件夹/文件验证

1 个答案: