###程序如何知道当前用哪个用户来运行？[有点难]

[seeku]

程序如何知道当前用哪个用户来运行？

程序可能被桌面用户启动，也可能被IIS的访客用户启动，也可能被SYSTEM来
启动。

如何知道当前被哪个用户启动呢？或者说正在以哪个身份来运行？

[neosu]

http://www.vckbase.com/document/viewdoc/?id=1241

//获取进程的用户名
BOOL CSecurityTool::GetProcessUser(DWORD dwProcessID, TCHAR *szUserName, DWORD nNameLen)
{
BOOL fResult = FALSE;
HANDLE hProc = NULL;
HANDLE hToken = NULL;
TOKEN_USER *pTokenUser = NULL;

__try
{
// Open the process with PROCESS_QUERY_INFORMATION access
hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, dwProcessID);
if (hProc == NULL)
{
__leave;
}
fResult = OpenProcessToken(hProc, TOKEN_QUERY, &hToken);
if(!fResult)
{
__leave;
}

DWORD dwNeedLen = 0;
fResult = GetTokenInformation(hToken,TokenUser, NULL, 0, &dwNeedLen);
if (dwNeedLen > 0)
{
pTokenUser = (TOKEN_USER*)new BYTE[dwNeedLen];
fResult = GetTokenInformation(hToken,
TokenUser,
pTokenUser,
dwNeedLen,
&dwNeedLen);
if (!fResult)
{
__leave;
}
}
else
{
__leave;
}

SID_NAME_USE sn;
TCHAR szDomainName[MAX_PATH];
DWORD dwDmLen = MAX_PATH;
fResult = LookupAccountSid(NULL,
pTokenUser->User.Sid,
szUserName,
&nNameLen,
szDomainName,
&dwDmLen,
&sn);
}
__finally
{
if (hProc)
::CloseHandle(hProc);
if (hToken)
::CloseHandle(hToken);
if (pTokenUser)
delete[] (char*)pTokenUser;

return fResult;
}
}

[seeku]

谢谢！