Can you explain why DirectoryInfo.GetFiles produces this IOException?
以下程式碼來源如參考網站
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Security.Principal;
namespace Company.Security
{
public class ImpersonateUser : IDisposable
{
[DllImport("advapi32.dll", SetLastError=true)]
private static extern bool LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, out IntPtr phToken);
[DllImport( "kernel32", SetLastError = true )]
private static extern bool CloseHandle(IntPtr hObject);
private IntPtr userHandle = IntPtr.Zero;
private WindowsImpersonationContext impersonationContext;
public ImpersonateUser( string user, string domain, string password )
{
if ( ! string.IsNullOrEmpty( user ) )
{
// Call LogonUser to get a token for the user
bool loggedOn = LogonUser( user, domain, password,
9 /*(int)LogonType.LOGON32_LOGON_NEW_CREDENTIALS*/,
3 /*(int)LogonProvider.LOGON32_PROVIDER_WINNT50*/,
out userHandle );
if ( !loggedOn )
throw new Win32Exception( Marshal.GetLastWin32Error() );
// Begin impersonating the user
impersonationContext = WindowsIdentity.Impersonate( userHandle );
}
}
public void Dispose()
{
if ( userHandle != IntPtr.Zero )
CloseHandle( userHandle );
if ( impersonationContext != null )
impersonationContext.Undo();
}
}
}
使用方法
using ( new ImpersonateUser( "UserID", "Domain", "Password" ) )
{
// Any IO code within this block will be able to access the remote server.
}
.net Core(20240219更新) Only windows server
[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);
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;
public IActionResult X()
{
try
{
bool returnValue = LogonUser("test", "mydomain", "test123", LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, out safeAccessTokenHandle);
if (!returnValue)
throw new Exception("登入unc路徑錯誤!!");
WindowsIdentity.RunImpersonated(safeAccessTokenHandle, () =>
{
var basepath = @"\\192.168.0.1\testFiles";
if (!Directory.Exists(basepath))
{
throw new Exception("無資料夾-" + basepath);
}
DirectoryInfo root = new DirectoryInfo(basepath);
FileInfo[] files = root.GetFiles();
foreach (var item in files)
{
try
{
// item.Delete();
}
catch (Exception ex)
{
throw new Exception( ex.Message);
}
}
});
}
catch (Exception ex)
{
sb.Append($"error:{ex.Message}");
}
}
參考來源
Can you explain why DirectoryInfo.GetFiles produces this IOException?
How to pass unc credential in .net corev
