一种新的穿透防火墙的数据传输技术

    char    NTDLL_DLL[] = "ntdll.dll";
    HMODULE ntdll_dll   = NULL;


    if ( ( ntdll_dll = GetModuleHandle( NTDLL_DLL ) ) == NULL )
    {
        printf( "GetModuleHandle() failed");
        return( FALSE );
    }
    if ( !( ZwQuerySystemInformation = ( ZWQUERYSYSTEMINFORMATION )GetProcAddress( ntdll_dll, "ZwQuerySystemInformation" ) ) )
    {
        goto LocateNtdllEntry_exit;
    }
    ret = TRUE;

LocateNtdllEntry_exit:

    if ( FALSE == ret )
    {
        printf( "GetProcAddress() failed");
    }
    ntdll_dll = NULL;
    return( ret );
}


/*++
This routine is used to get a process's username from it's SID
--*/
BOOL GetUserNameFromSid(PSID pUserSid, char *szUserName)
{
    // sanity checks and default value
    if (pUserSid == NULL)
        return false;
    strcpy(szUserName, "?");

    SID_NAME_USE   snu;
    TCHAR          szUser[_MAX_PATH];
    DWORD          chUser = _MAX_PATH;
    PDWORD         pcchUser = &chUser;
    TCHAR          szDomain[_MAX_PATH];
    DWORD          chDomain = _MAX_PATH;
    PDWORD         pcchDomain = &chDomain;

    // Retrieve user name and domain name based on user's SID.
    if (
        ::LookupAccountSid(
        NULL,
        pUserSid,
        szUser,
        pcchUser,
        szDomain,
        pcchDomain,
        &snu
        )
        )
    {
        wsprintf(szUserName, "%s", szUser);
    }

论坛热门帖子:	[lch203] 写得蛮好的linux学习笔记(10-21) [黑马制造] 学习java的30个目标(10-19) [笑傲股林] 做测试半年了，有点迷茫，应该再学些什么提高自己的测试水平和测试能力呢？(10-19) [udp8589] 大家用google的来吱一声? 用百度的~~也来报道下?(10-18) [沂偌掳兆] 本人总结的一些认为C++比较经典的书籍，希望对大家有用(10-18)
TAG标签:	技术 防火墙 if NULL return printf // the buf 进程