我正在为C#中的fujitsu扫描器编写一个加载项.文档被扫描到本地目录,我想将它们复制到网络上的pc.我一直收到System.IO.IOException:登录失败:虽然未知用户名或密码错误.我尝试将它们复制到公共目录(至少我认为是公共目录),我仍然得到相同的结果.
对于我可以尝试的东西的任何想法?我认为这里的代码不是问题,但无论如何它都在这里.
private bool moveTheFile(String source, String destination)
{
System.DirectoryServices.DirectoryEntry dntry = null;
try
{
//System.IO.File.Move(source, destination);
System.IO.File.Copy(source, destination);
System.IO.File.Delete(source);
if (System.IO.File.Exists(destination))
{
return true;
}
else
{
return false;
}
}
catch (Exception err)
{
_host.WriteSystemLog(LogType.Information, "E1000099", "File.Move Error " + err.ToString());
return false;
}
}
最佳答案 您的问题是由于计算机正在使用LOCAL SERVICE帐户或甚至无法访问共享公用文件夹的内容.您需要冒充我认为的其他帐户.我在不同的站点上找到以下代码来执行此操作:
public WindowsImpersonationContext
ImpersonateUser(string sUsername, string sDomain, string sPassword)
{
// initialize tokens
IntPtr pExistingTokenHandle = new IntPtr(0);
IntPtr pDuplicateTokenHandle = new IntPtr(0);
pExistingTokenHandle = IntPtr.Zero;
pDuplicateTokenHandle = IntPtr.Zero;
// if domain name was blank, assume local machine
if (sDomain == "")
sDomain = System.Environment.MachineName;
try
{
string sResult = null;
const int LOGON32_PROVIDER_DEFAULT = 0;
// create token
const int LOGON32_LOGON_INTERACTIVE = 2;
//const int SecurityImpersonation = 2;
// get handle to token
bool bImpersonated = LogonUser(sUsername, sDomain, sPassword,
LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT,
ref pExistingTokenHandle);
// did impersonation fail?
if (false == bImpersonated)
{
int nErrorCode = Marshal.GetLastWin32Error();
sResult = "LogonUser() failed with error code: " +
nErrorCode + "\r\n";
// show the reason why LogonUser failed
MessageBox.Show(this, sResult, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
// Get identity before impersonation
sResult += "Before impersonation: " +
WindowsIdentity.GetCurrent().Name + "\r\n";
bool bRetVal = DuplicateToken(pExistingTokenHandle,
(int)SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation,
ref pDuplicateTokenHandle);
// did DuplicateToken fail?
if (false == bRetVal)
{
int nErrorCode = Marshal.GetLastWin32Error();
// close existing handle
CloseHandle(pExistingTokenHandle);
sResult += "DuplicateToken() failed with error code: "
+ nErrorCode + "\r\n";
// show the reason why DuplicateToken failed
MessageBox.Show(this, sResult, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
return null;
}
else
{
// create new identity using new primary token
WindowsIdentity newId = new WindowsIdentity
(pDuplicateTokenHandle);
WindowsImpersonationContext impersonatedUser =
newId.Impersonate();
// check the identity after impersonation
sResult += "After impersonation: " +
WindowsIdentity.GetCurrent().Name + "\r\n";
MessageBox.Show(this, sResult, "Success",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return impersonatedUser;
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
// close handle(s)
if (pExistingTokenHandle != IntPtr.Zero)
CloseHandle(pExistingTokenHandle);
if (pDuplicateTokenHandle != IntPtr.Zero)
CloseHandle(pDuplicateTokenHandle);
}
}
以下是支持方法:
[DllImport("advapi32.dll", SetLastError=true)]
public static extern bool LogonUser(string pszUsername, string pszDomain, string pszPassword,
int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
// closes open handes returned by LogonUser
[DllImport("kernel32.dll", CharSet=CharSet.Auto)]
public extern static bool CloseHandle(IntPtr handle);
// creates duplicate token handle
[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)]
public extern static bool DuplicateToken(IntPtr ExistingTokenHandle,
int SECURITY_IMPERSONATION_LEVEL, ref IntPtr DuplicateTokenHandle);
// group type enum
public enum SECURITY_IMPERSONATION_LEVEL : int
{
SecurityAnonymous = 0,
SecurityIdentification = 1,
SecurityImpersonation = 2,
SecurityDelegation = 3
}