是否在其他用户和域下打开共享文件?

a) p/调用 LogonUser 具有 LOGON32_LOGON_NEW_CREDENTIALS 创造一个新的 WindowsIdentity 使用新令牌,然后使用普通文件访问。

b) p/调用 WNetAddConnection3 . 请注意,这将使您的远程共享可以访问您的计算机上的其他所有进程。

c) WMI通过 System.Management CIM_DataFile ;甚至不需要p/invoke。 系统管理

我使用了Anton建议的“a”点,为一个类开发了两个版本,第一个使用win32api,第二个使用 WindowsIdentity 班级。

class UserImpersonation : IDisposable
{       
    [DllImport("advapi32.dll")]
    public static extern int LogonUser(String lpszUserName,
        String lpszDomain,
        String lpszPassword,
        int dwLogonType,
        int dwLogonProvider,
        ref IntPtr phToken);

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

    [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern bool RevertToSelf();

    [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
    public static extern bool CloseHandle(IntPtr handle);

    const int LOGON32_PROVIDER_DEFAULT = 0;
    const int LOGON32_LOGON_INTERACTIVE = 2;

    WindowsImpersonationContext wic;
    string _userName;
    string _domain;
    string _passWord;
    
    public UserImpersonation(string userName, string domain, string passWord)
    {
        _userName = userName;
        _domain = domain;
        _passWord = passWord;
    }
    
    public bool ImpersonateValidUser()
    {
        WindowsIdentity wi;
        IntPtr token = IntPtr.Zero;
        IntPtr tokenDuplicate = IntPtr.Zero;

        if (RevertToSelf())
        {
            if (LogonUser(_userName, _domain, _passWord, LOGON32_LOGON_INTERACTIVE,
                LOGON32_PROVIDER_DEFAULT, ref token) != 0)
            {
                if (DuplicateToken(token, 2, ref tokenDuplicate) != 0)
                {
                    wi = new WindowsIdentity(tokenDuplicate);
                    wic = wi.Impersonate();
                    if (wic != null)
                    {
                        CloseHandle(token);
                        CloseHandle(tokenDuplicate);
                        return true;
                    }
                }
            }
        }
        
        if (token != IntPtr.Zero)
        {
            CloseHandle(token);
        }
        if (tokenDuplicate != IntPtr.Zero)
        {
            CloseHandle(tokenDuplicate);
        }
        return false;
    }

    #region IDisposable Members
    public void Dispose()
    {
        if (wic != null)
        {
            wic.Dispose();
        }
        RevertToSelf();
    }
    #endregion
}

版本2(自 MSDN

class UserImpersonation2 : IDisposable
{
    [DllImport("advapi32.dll")]
    public static extern bool LogonUser(String lpszUserName,
        String lpszDomain,
        String lpszPassword,
        int dwLogonType,
        int dwLogonProvider,
        ref IntPtr phToken);

    [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
    public static extern bool CloseHandle(IntPtr handle);

    WindowsImpersonationContext wic;
    IntPtr tokenHandle;
    string _userName;
    string _domain;
    string _passWord;

    public UserImpersonation2(string userName, string domain, string passWord)
    {
        _userName = userName;
        _domain = domain;
        _passWord = passWord;
    }

    const int LOGON32_PROVIDER_DEFAULT = 0;
    const int LOGON32_LOGON_INTERACTIVE = 2;

    public bool ImpersonateValidUser()
    {
        bool returnValue = LogonUser(_userName, _domain, _passWord,
                LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT,
                ref tokenHandle);

        Console.WriteLine("LogonUser called.");

        if (false == returnValue)
        {
            int ret = Marshal.GetLastWin32Error();
            Console.WriteLine("LogonUser failed with error code : {0}", ret);
            return false;
        }

        Console.WriteLine("Did LogonUser Succeed? " + (returnValue ? "Yes" : "No"));
        Console.WriteLine("Value of Windows NT token: " + tokenHandle);

        // Check the identity.
        Console.WriteLine("Before impersonation: "
            + WindowsIdentity.GetCurrent().Name);
            
        // Use the token handle returned by LogonUser.
        WindowsIdentity newId = new WindowsIdentity(tokenHandle);
        wic = newId.Impersonate();

        // Check the identity.
        Console.WriteLine("After impersonation: "
            + WindowsIdentity.GetCurrent().Name);
            
        return true;
    }
    
    #region IDisposable Members
    public void Dispose()
    {
        if(wic!=null)
        {
            wic.Undo();
        }
        if (tokenHandle != IntPtr.Zero)
        {
            CloseHandle(tokenHandle);
        }
    }
    #endregion
}

使用方法(两者相同):

const string file = @"\\machine\test\file.txt";

using (UserImpersonation user = new UserImpersonation("user", "domain", "password"))
{
    if (user.ImpersonateValidUser())
    {
        StreamReader reader = new StreamReader(file);
        Console.WriteLine(reader.ReadToEnd());
        reader.Close();
    }
}

link 举个例子。

另一种方法是使用RunAs命令行参数读取文件并将其保存到本地域/服务器上的文件中。