Question

我使用了GetUserName（）METHOD，但它返回的用户名是SYSTEM进程中的'SYSTEM'。如何在SYSTEM进程中获取活动用户名？这是我的代码：

void getComputerUsername(char * username,char * domainname)
{
 HANDLE hp , htoken;
 char buff[1024];
 unsigned long size = 1024;

 TOKEN_USER *tuser;
 PSID sid;
 TCHAR * user = new TCHAR[256];
 TCHAR * domain=new TCHAR[256];
 SID_NAME_USE snu;

 hp = htoken = INVALID_HANDLE_VALUE;
 hp = GetCurrentProcess();
 if(OpenProcessToken(hp, TOKEN_QUERY, &htoken))
 {
     if(GetTokenInformation(htoken, TokenUser, (void*)buff, size, &size))
 {
     tuser = (TOKEN_USER*)buff;
     sid = tuser->User.Sid;
     size = 256;
     if(LookupAccountSid(NULL, sid, user, &size, domain, &size, &snu))
     {
    int iLength = WideCharToMultiByte(CP_ACP, 0, user, -1, NULL, 0, NULL, NULL);  
    WideCharToMultiByte(CP_ACP, 0, user, -1, username, iLength, NULL, NULL);   

    iLength = WideCharToMultiByte(CP_ACP, 0, domain, -1, NULL, 0, NULL, NULL);  
    WideCharToMultiByte(CP_ACP, 0, domain, -1, domainname, iLength, NULL, NULL);  
           //strcpy( user,username);
     }
 }
 }

}

Answer 1

如果您想知道谁登录到物理控制台，您可以致电WTSGetActiveConsoleSessionId以获取当前活动的终端服务（也称为“快速用户切换”又名“远程桌面”）会话ID。 / p>

然后，您可以使用WTSUserName致电WTSQuerySessionInformation以获取用户名。

（如果您感兴趣的用户可能通过远程桌面登录，则此方法无效。）

Answer 2

无论用户是在物理控制台上还是通过远程会话登录，枚举所有进程都是一种方法，但它有一些问题：

1）您无法使用文档化的Windows API在同一服务流程中枚举x86和x64流程。 x86服务只能枚举x86进程，而x64服务只能枚举x64进程。规避这种方法的一种方法是让x86服务启动x64辅助进程（反之亦然）来执行枚举任务的其余部分。

2）不同Windows版本（例如Vista到Windows 10）上登录用户始终存在的唯一进程是explorer.exe，但该进程是x64操作系统平台上的x64和x32操作系统平台上的x32及其存在并不意味着用户已主动登录。

更好的方法是枚举会话，查找活动的交互式会话或已连接的会话，然后获取该会话的用户名。

下面的代码远不止于此，包括模拟该用户并从Windows服务中以该用户身份运行进程，但如果您只是对用户名感兴趣，请查找第二个实例WTSQuerySessionInformation（）函数被调用。

//Function to run a process as active user from windows service
void ImpersonateActiveUserAndRun(WCHAR* path, WCHAR* args)
{
    DWORD session_id = -1;
    DWORD session_count = 0;

    WTS_SESSION_INFOA *pSession = NULL;


    if (WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, &pSession, &session_count))
    {
        //log success
    }
    else
    {
        //log error
        return;
    }

    for (int i = 0; i < session_count; i++)
    {
        session_id = pSession[i].SessionId;

        WTS_CONNECTSTATE_CLASS wts_connect_state = WTSDisconnected;
        WTS_CONNECTSTATE_CLASS* ptr_wts_connect_state = NULL;

        DWORD bytes_returned = 0;
        if (::WTSQuerySessionInformation(
            WTS_CURRENT_SERVER_HANDLE,
            session_id,
            WTSConnectState,
            reinterpret_cast<LPTSTR*>(&ptr_wts_connect_state),
            &bytes_returned))
        {
            wts_connect_state = *ptr_wts_connect_state;
            ::WTSFreeMemory(ptr_wts_connect_state);
            if (wts_connect_state != WTSActive) continue;
        }
        else
        {
            //log error
            continue;
        }

        HANDLE hImpersonationToken;

        if (!WTSQueryUserToken(session_id, &hImpersonationToken))
        {
            //log error
            continue;
        }


        //Get real token from impersonation token
        DWORD neededSize1 = 0;
        HANDLE *realToken = new HANDLE;
        if (GetTokenInformation(hImpersonationToken, (::TOKEN_INFORMATION_CLASS) TokenLinkedToken, realToken, sizeof(HANDLE), &neededSize1))
        {
            CloseHandle(hImpersonationToken);
            hImpersonationToken = *realToken;
        }
        else
        {
            //log error
            continue;
        }


        HANDLE hUserToken;

        if (!DuplicateTokenEx(hImpersonationToken,
            //0,
            //MAXIMUM_ALLOWED,
            TOKEN_ASSIGN_PRIMARY | TOKEN_ALL_ACCESS | MAXIMUM_ALLOWED,
            NULL,
            SecurityImpersonation,
            TokenPrimary,
            &hUserToken))
        {
            //log error
            continue;
        }

        // Get user name of this process
        //LPTSTR pUserName = NULL;
        WCHAR* pUserName;
        DWORD user_name_len = 0;

        if (WTSQuerySessionInformationW(WTS_CURRENT_SERVER_HANDLE, session_id, WTSUserName, &pUserName, &user_name_len))
        {
            //log username contained in pUserName WCHAR string
        }

        //Free memory                         
        if (pUserName) WTSFreeMemory(pUserName);

        ImpersonateLoggedOnUser(hUserToken);

        STARTUPINFOW StartupInfo;
        GetStartupInfoW(&StartupInfo);
        StartupInfo.cb = sizeof(STARTUPINFOW);
        //StartupInfo.lpDesktop = "winsta0\\default";

        PROCESS_INFORMATION processInfo;

        SECURITY_ATTRIBUTES Security1;
        Security1.nLength = sizeof SECURITY_ATTRIBUTES;

        SECURITY_ATTRIBUTES Security2;
        Security2.nLength = sizeof SECURITY_ATTRIBUTES;

        void* lpEnvironment = NULL;

        // Get all necessary environment variables of logged in user
        // to pass them to the new process
        BOOL resultEnv = CreateEnvironmentBlock(&lpEnvironment, hUserToken, FALSE);
        if (!resultEnv)
        {
            //log error
            continue;
        }

        WCHAR PP[1024]; //path and parameters
        ZeroMemory(PP, 1024 * sizeof WCHAR);
        wcscpy(PP, path);
        wcscat(PP, L" ");
        wcscat(PP, args);

        // Start the process on behalf of the current user 
        BOOL result = CreateProcessAsUserW(hUserToken, 
            NULL,
            PP,
            //&Security1,
            //&Security2,
            NULL,
            NULL,
            FALSE, 
            NORMAL_PRIORITY_CLASS | CREATE_NEW_CONSOLE,
            //lpEnvironment,
            NULL,
            //"C:\\ProgramData\\some_dir",
            NULL,
            &StartupInfo,
            &processInfo);

        if (!result)
        {
            //log error
        }
        else
        {
            //log success
        }

        DestroyEnvironmentBlock(lpEnvironment);

        CloseHandle(hImpersonationToken);
        CloseHandle(hUserToken);
        CloseHandle(realToken);

        RevertToSelf();
    }

    WTSFreeMemory(pSession);
}

Answer 3

您需要使用EnumProcesses

枚举所有正在运行的进程

然后看到这个答案，从过程中获取用户名：

https://stackoverflow.com/a/2686150/203244

Answer 4

枚举桌面并找到＆＃34;默认＆＃34;桌面。从该桌面获取用户SID。也许你必须尝试找到正确的访问权限;我只是尝试了交互过程中的代码。

BOOL CALLBACK EnumDesktopProc(_In_  LPTSTR lpszDesktop, _In_  LPARAM lParam)
{
    // todo: check if desktop is "Default"
    char info[1000];
    auto hd = OpenDesktop(lpszDesktop, NULL, FALSE, DESKTOP_READOBJECTS);
    GetUserObjectInformation(hd, UOI_USER_SID, info, 1000, NULL);
    return TRUE;
}

BOOL CALLBACK EnumWindowStationProc(_In_  LPTSTR lpszWindowStation, _In_  LPARAM lParam)
{
    auto hs = OpenWindowStation(lpszWindowStation, FALSE, WINSTA_ENUMDESKTOPS);
    EnumDesktops(hs, &EnumDesktopProc, NULL);
    return TRUE;
}

int _tmain(int argc, _TCHAR* argv[])
{
    EnumWindowStations(&EnumWindowStationProc, NULL);
    return 0;
}

Answer 5

如果您只想获取主动控制台用户名，请调用 windows api WTSGetActiveConsoleSessionId() 和 WTSQuerySessionInformation()：

DWORD SessionIdWanted = WTSGetActiveConsoleSessionId();

if(0xFFFFFFFF != SessionIdWanted)
{
    WCHAR* pUserName;
    DWORD dwNameLen = 0;

    if(WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE, SessionIdWanted, 
    &pUserName, &dwNameLen))
    {
        wstring UserName(pUserName);
        wcout << L"Current active console user: " << UserName << endl;
    }
    else
        //...
}
else
    //Now no active console user here.

如何使用C ++在SYSTEM进程中获取活动用户名？

5 个答案: