如何在Windows中獲取當前登錄用戶的域名？

Question

我知道我可以通過調用GetUserName來獲取當前登錄的用戶名。我正在尋找一個返回此用戶的域的API函數。

Answer 1

請參閱How to retrieve current user and domain names on Windows NT, Windows 2000, or Windows XP。

例子：

#define UNICODE 
#define _UNICODE 
#include <windows.h> 
#include <tchar.h> 

BOOL GetCurrentUserAndDomain(PTSTR szUser, PDWORD pcchUser, 
     PTSTR szDomain, PDWORD pcchDomain) { 

    BOOL   fSuccess = FALSE; 
    HANDLE  hToken = NULL; 
    PTOKEN_USER ptiUser = NULL; 
    DWORD  cbti  = 0; 
    SID_NAME_USE snu; 

    __try { 

     // Get the calling thread's access token. 
     if (!OpenThreadToken(GetCurrentThread(), TOKEN_QUERY, TRUE, 
      &hToken)) { 

     if (GetLastError() != ERROR_NO_TOKEN) 
      __leave; 

     // Retry against process token if no thread token exists. 
     if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, 
       &hToken)) 
      __leave; 
     } 

     // Obtain the size of the user information in the token. 
     if (GetTokenInformation(hToken, TokenUser, NULL, 0, &cbti)) { 

     // Call should have failed due to zero-length buffer. 
     __leave; 

     } else { 

     // Call should have failed due to zero-length buffer. 
     if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) 
      __leave; 
     } 

     // Allocate buffer for user information in the token. 
     ptiUser = (PTOKEN_USER) HeapAlloc(GetProcessHeap(), 0, cbti); 
     if (!ptiUser) 
     __leave; 

     // Retrieve the user information from the token. 
     if (!GetTokenInformation(hToken, TokenUser, ptiUser, cbti, &cbti)) 
     __leave; 

     // Retrieve user name and domain name based on user's SID. 
     if (!LookupAccountSid(NULL, ptiUser->User.Sid, szUser, pcchUser, 
      szDomain, pcchDomain, &snu)) 
     __leave; 

     fSuccess = TRUE; 

    } __finally { 

     // Free resources. 
     if (hToken) 
     CloseHandle(hToken); 

     if (ptiUser) 
     HeapFree(GetProcessHeap(), 0, ptiUser); 
    } 

    return fSuccess; 
} 

int main() 
{ 
    TCHAR user[1024], domain[1024]; 
    DWORD chUser = sizeof(user), chDomain = sizeof(domain); 
    if (GetCurrentUserAndDomain(user, &chUser, domain, &chDomain)) 
    { 
     _tprintf(TEXT("user:%s\ndomain:%s\n"), user, domain); 
    } 
} 

輸出在我的情況：

user:dlaru_000 
domain:IKH-WIN81 

請注意，您必須對advapi32.lib鏈接程序。