【发布时间】:2014-03-20 20:56:54
【问题描述】:
我一直在使用这个link 来设置模拟。我有很多方法,我需要为所有方法模仿。
- 我必须在每个方法调用周围添加使用代码吗? 一种为整个生命周期设置模拟的方法 应用 ?
- 我在下面冒充本地管理员 - 是 我的代码有任何缺陷或安全隐患吗?
- 是 LOGON32_LOGON_NEW_CREDENTIALS 值 2 正确(它按预期工作)
c#代码
private void buttonUsingImpersonation_Click(object sender, EventArgs e)
{
try
{
using (new Impersonation("LocalHost", "test", "test"))
{
// do whatever you want
string fileName = System.IO.Path.GetRandomFileName();
String pathString = System.IO.Path.Combine(FolderPath, fileName);
.
if (!System.IO.File.Exists(pathString))
{
using (System.IO.FileStream fs = System.IO.File.Create(pathString))
{
for (byte i = 0; i < 100; i++)
{
fs.WriteByte(i);
}
}
}
else
{
MessageBox.Show("File already exists " + fileName);
return;
}
}
}
catch (Exception ex)
{
// If exception happens, it will be returned here
MessageBox.Show("Error " + MethodBase.GetCurrentMethod().Name + " " + ex.ToString());
}
}
类
using System;
using System.Runtime.ConstrainedExecution;
using System.Runtime.InteropServices;
using System.Security;
using System.Security.Permissions;
using System.Security.Principal;
using Microsoft.Win32.SafeHandles;
namespace ImpersonationDemo
{
[PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
public class Impersonation : IDisposable
{
private readonly SafeTokenHandle _handle;
private readonly WindowsImpersonationContext _context;
const int LOGON32_LOGON_NEW_CREDENTIALS = 2;
public Impersonation(string domain, string username, string password)
{
var ok = LogonUser(username, domain, password,
LOGON32_LOGON_NEW_CREDENTIALS, 0, out this._handle);
if (!ok)
{
var errorCode = Marshal.GetLastWin32Error();
throw new ApplicationException(string.Format("Could not impersonate the elevated user. LogonUser returned error code {0}.", errorCode));
}
this._context = WindowsIdentity.Impersonate(this._handle.DangerousGetHandle());
}
public void Dispose()
{
this._context.Dispose();
this._handle.Dispose();
}
[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
private static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, out SafeTokenHandle phToken);
public sealed class SafeTokenHandle : SafeHandleZeroOrMinusOneIsInvalid
{
private SafeTokenHandle()
: base(true) { }
[DllImport("kernel32.dll")]
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
[SuppressUnmanagedCodeSecurity]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool CloseHandle(IntPtr handle);
protected override bool ReleaseHandle()
{
return CloseHandle(handle);
}
}
}
}
【问题讨论】:
-
我相信 LOGON32_LOGON_NEW_CREDENTIALS 是 9,而不是 2; 2 表示 LOGON32_LOGON_INTERACTIVE
标签: c# impersonation