WindowsIdentity.RunImpersonated 方法

参考

定义

命名空间:: System.Security.Principal

程序集:: System.Security.Principal.Windows.dll

程序集:

程序集:: mscorlib.dll

重要

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重载

RunImpersonated(SafeAccessTokenHandle, Action)	作为模拟 Windows 标识运行指定操作。可以使用 RunImpersonated(SafeAccessTokenHandle, Action) 并直接作为参数提供函数，而不是使用模拟方法调用并在 WindowsImpersonationContext 中运行函数。
RunImpersonated<T>(SafeAccessTokenHandle, Func<T>)	作为模拟 Windows 标识运行指定函数。可以使用 RunImpersonated(SafeAccessTokenHandle, Action) 并直接作为参数提供函数，而不是使用模拟方法调用并在 WindowsImpersonationContext 中运行函数。

RunImpersonated(SafeAccessTokenHandle, Action)

作为模拟 Windows 标识运行指定操作。可以使用 RunImpersonated(SafeAccessTokenHandle, Action) 并直接作为参数提供函数，而不是使用模拟方法调用并在 WindowsImpersonationContext 中运行函数。

public:
 static void RunImpersonated(Microsoft::Win32::SafeHandles::SafeAccessTokenHandle ^ safeAccessTokenHandle, Action ^ action);

public static void RunImpersonated (Microsoft.Win32.SafeHandles.SafeAccessTokenHandle safeAccessTokenHandle, Action action);

static member RunImpersonated : Microsoft.Win32.SafeHandles.SafeAccessTokenHandle * Action -> unit

Public Shared Sub RunImpersonated (safeAccessTokenHandle As SafeAccessTokenHandle, action As Action)

参数

safeAccessTokenHandle: SafeAccessTokenHandle

模拟 Windows 标识 SafeAccessTokenHandle。

action: Action

要运行的 System.Action。

示例

下面的示例演示如何使用 WindowsIdentity 类来模拟用户。

警告

此示例要求用户在控制台屏幕上输入密码。密码将在屏幕上可见，因为控制台窗口不支持本机屏蔽输入。

// The following example demonstrates the use of the WindowsIdentity class to impersonate a user.   
// IMPORTANT NOTE:   
// This sample asks the user to enter a password on the console screen.   
// The password will be visible on the screen, because the console window   
// does not support masked input natively.  

using System;  
using System.Runtime.InteropServices;  
using System.Security;  
using System.Security.Principal;  
using Microsoft.Win32.SafeHandles;  

public class ImpersonationDemo  
{  
    [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]  
    public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword,  
        int dwLogonType, int dwLogonProvider, out SafeAccessTokenHandle phToken);  

    public static void Main()  
    {  
        // Get the user token for the specified user, domain, and password using the   
        // unmanaged LogonUser method.   
        // The local machine name can be used for the domain name to impersonate a user on this machine.  
        Console.Write("Enter the name of the domain on which to log on: ");  
        string domainName = Console.ReadLine();  

        Console.Write("Enter the login of a user on {0} that you wish to impersonate: ", domainName);  
        string userName = Console.ReadLine();  

        Console.Write("Enter the password for {0}: ", userName);  

        const int LOGON32_PROVIDER_DEFAULT = 0;  
        //This parameter causes LogonUser to create a primary token.   
        const int LOGON32_LOGON_INTERACTIVE = 2;  

        // Call LogonUser to obtain a handle to an access token.   
        SafeAccessTokenHandle safeAccessTokenHandle;  
        bool returnValue = LogonUser(userName, domainName, Console.ReadLine(),  
            LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT,  
            out safeAccessTokenHandle);  

        if (false == returnValue)  
        {  
            int ret = Marshal.GetLastWin32Error();  
            Console.WriteLine("LogonUser failed with error code : {0}", ret);  
            throw new System.ComponentModel.Win32Exception(ret);  
        }  

        Console.WriteLine("Did LogonUser Succeed? " + (returnValue ? "Yes" : "No"));  
        // Check the identity.  
        Console.WriteLine("Before impersonation: " + WindowsIdentity.GetCurrent().Name);  

        // Note: if you want to run as unimpersonated, pass  
        //       'SafeAccessTokenHandle.InvalidHandle' instead of variable 'safeAccessTokenHandle'  
        WindowsIdentity.RunImpersonated(  
            safeAccessTokenHandle,  
            // User action  
            () =>  
            {  
                // Check the identity.  
                Console.WriteLine("During impersonation: " + WindowsIdentity.GetCurrent().Name);  
            }  
            );  

        // Check the identity again.  
        Console.WriteLine("After impersonation: " + WindowsIdentity.GetCurrent().Name);  
    }  
}

注解

备注

与 async/await 模式相比，此方法可用于可靠地使用 Impersonate 。在异步方法中，此方法的泛型重载可与 async 委托参数一起使用，以便生成的任务可能会等待。

适用于

RunImpersonated<T>(SafeAccessTokenHandle, Func<T>)

作为模拟 Windows 标识运行指定函数。可以使用 RunImpersonated(SafeAccessTokenHandle, Action) 并直接作为参数提供函数，而不是使用模拟方法调用并在 WindowsImpersonationContext 中运行函数。

public:
generic <typename T>
 static T RunImpersonated(Microsoft::Win32::SafeHandles::SafeAccessTokenHandle ^ safeAccessTokenHandle, Func<T> ^ func);

public static T RunImpersonated<T> (Microsoft.Win32.SafeHandles.SafeAccessTokenHandle safeAccessTokenHandle, Func<T> func);

static member RunImpersonated : Microsoft.Win32.SafeHandles.SafeAccessTokenHandle * Func<'T> -> 'T

Public Shared Function RunImpersonated(Of T) (safeAccessTokenHandle As SafeAccessTokenHandle, func As Func(Of T)) As T

类型参数

T

函数使用并返回的对象的类型。

参数

safeAccessTokenHandle: SafeAccessTokenHandle

模拟 Windows 标识 SafeAccessTokenHandle。

func: Func<T>

要运行的 System.Func。

T

函数的结果。

示例